• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    The invention relates to a retaining device (10) comprising a continuous base (12) having an upper face (12A) and a lower face (12B) and extending in a longitudinal direction and a plurality of retaining elements (16). ) extending from the upper face (12A) of the base (12), each retaining element (16) comprising a rod (18). The base (12) has at least one area (20) free of retainers such that the plurality of retainers (16) form at least one pattern (14). The invention also relates to a retaining device tape.
    公开号:FR3077186A1
    申请号:FR1850645
    申请日:2018-01-26
    公开日:2019-08-02
    发明作者:Damien BOSSER
    申请人:Aplix SA；
    IPC主号:
    专利说明:

    Technological field This presentation relates to a retaining device comprising projecting elements, such as rods and / or preforms and / or hooks, for example intended to cooperate with a counterpart with hooks and / or loops.
    Technological background [0002] In particular in the field of hygiene, retaining devices, for example with hooks, are used and cooperate with a counterpart with loops forming an application area of the retaining device.
    When a user positions the retaining device on this application area, the user may doubt that he has correctly positioned the retaining device on the application area. This area of application is commonly called in the field of hygiene "comfort band" or identified by the expression in English "landing zone". The fact that the user is certain to have correctly positioned the restraint on the application area will influence the perception that the user has of the fact that the restraint is well maintained on the application area.
    The user may also have to reposition the retaining device on the application area, for example in order to better adjust the article and / or in order to remove the article.
    The peeling force is typically the force that the user will exert on the retaining device to separate the retaining device from the application area. The ease with which the user can separate the restraint from the application area will affect the user's perception that the restraint is securely held in the application area. In some extreme cases, a weak peel force can cause an unexpected detachment of the retainer and the application area.
    There is therefore a need to improve the real sensation / quality and / or perceived by the user when he uses the retaining device in closing and / or in opening.
    Presentation This presentation aims to remedy these drawbacks at least in part by proposing a simple to use, visual, cognitive, intuitive restraint device for the user.
    To this end, according to a first aspect, the present disclosure relates to a retaining device comprising:
    - a continuous base having an upper face and a lower face; and
    - a plurality of retaining elements extending from the upper face of the base, each retaining element comprising a rod;
    the base comprising at least one zone devoid of retaining elements so that the plurality of retaining elements form at least one pattern, and in a CIE L * a * b * color space, a color difference ΔΕ * between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements is greater than or equal to 1.0, preferably greater than or equal to 1.5, even more preferably greater than or equal to 3.0, even more preferably greater than or equal to 4.5.
    By reason, it is understood that the distribution of the retaining elements is not uniform over the entire base. Thus, although the retaining elements can be uniformly spaced on the base to form the pattern, certain areas of the base are devoid of retaining elements and make it possible to delimit the pattern.
    The pattern comprises a pattern surface corresponding to the surface covered by circles of radius corresponding to the average pitch and the center of each circle is positioned respectively, when viewed from above, on the center of the retaining elements and the circumference of each circle passes through the center of at least one adjacent retainer. The average pitch can correspond to the distance separating two adjacent retaining elements. The at least one area devoid of retaining elements is the surface not covered by the pattern surface.
    The color difference ΔΕ * between the zones devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements is greater than or equal to 1.0, the user can visually identify the pattern formed by the plurality of retaining elements and therefore be certain that it correctly positions the pattern on an application area, such as a counterpart with loops for example. This therefore makes it possible to improve the real and / or perceived sensation / quality per user when using the closure and / or opening retention device.
    [0012] The color space CIE L * a * b * color space or CIE L * a * b *, typically named CIELAB space is used so the 10 most widespread and is issued by the International Commission 'Lighting (CIE) to characterize surface colors. This space describes all the colors visible to the human eye and was created to serve as a reference. In this space, the clarity L * varies from 0 (= black) to 100 (= white), the parameter a * represents the value on an axis varying from green to 15 red and the parameter b * represents the value on a variant axis from blue to yellow. The color difference ΔΕ * between the zones devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements is calculated according to equation (1):
    (1) ΔΕ * = α / ΔΓ 2 + Δα * 2 + Δ & * 2 The values of L *, a * and b * are measured for example with a spectrocolorimeter in natural light model RM200QC of x-rite pantone on a white support.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE L * a * b * color space, a color difference ΔΕ * between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements, the color difference ΔΕ * being greater than or equal to 1.0, preferably greater than or equal at 1.5, even more preferably greater than or equal to 3.0 still more preferably greater than or equal to 4.5.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE L * a * b * color space, a color difference ΔΕ * between a first zone provided with retaining elements and a second zone provided with retaining elements, the color difference ΔΕ * being greater than or equal to 1.0, preferably greater than or equal to 1.5, even more than preferably greater than or equal to 3.0 even more preferably greater than or equal to 4.5.
    In some embodiments, the retaining element comprises the rod surmounted by a head.
    The rod comprises a lower end connected to the base, and an upper end opposite the lower end and the head surmounts the upper end of the rod.
    This type of retaining element can for example be a preform and / or a hook.
    In some embodiments, an area of the areas devoid of retaining elements is greater than or equal to 5% of a total surface of the base, preferably is greater than or equal to 10%, even more preferably is greater than or equal to 15%.
    Generally, the retaining elements are not present on the edges of the base. Thus, for retaining devices not comprising a pattern, that is to say retaining devices in which the retaining elements are distributed uniformly over the entire base, there may exist a strip, along the edges of the base without retainers. However, these bands do not have a sufficient surface to allow identification by the user of a pattern due to their straight shape. The user therefore does not identify the presence of zones devoid of retaining elements as zones delimiting a pattern. It is understood that the narrow zones generally forming a band at the edge of the retaining device are not bordered on each side by retaining devices.
    In some embodiments, the pattern is a single pattern.
    By single pattern is meant an isolated pattern in an area of the base measuring 25.4 mm or 30.0 mm or 35.0 mm in the direction MD and 13.0 mm or 25.0 mm or 25.4 mm in direction CD.
    By MD direction means the direction of movement of the base in the machine during the manufacture of the retainer, in accordance with the English acronym for "Machine Direction", and CD direction, in accordance with the English acronym for "Cross Direction ", The direction perpendicular to the MD direction.
    This pattern can for example represent a pattern recognizable by the user, for example a distinctive sign or a mark.
    In some embodiments, the pattern is a repeating pattern.
    The pattern can for example be of smaller size, compared to a single pattern, but be repeated several times.
    In some embodiments, the repeated pattern can be a complex pattern.
    By complex pattern is meant a pattern comprising several 10 entities which may be different from each other, this complex pattern itself being repeated at least once.
    In some embodiments, the pattern has a closed outline.
    By closed contour is meant a curve, the two ends of which coincide.
    In some embodiments, the pattern is arranged so that when the retaining device is biased in opening, a force exerted on the retaining device is broken down between at least a first component in peeling force and a second component in shear force.
    In some embodiments, in a CIE XYZ color space, the difference in opacity between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements is greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to
    3.
    The CIE XYZ color space is a color space defined by the International Commission on (Lighting). The Y component of the CIE XYZ space corresponds to the luminance, that is to say to the luminosity 30 According to ASTM D2805, the opacity expressed in percent is calculated according to equation (2):
    (2) Opacity (%) = v r / black * 100
    Yfond blanc where Yfond noir is the measurement of Y performed on a black support and Yf On d blanc is the measurement of Y performed on a white support.
    The values of Yf On d black and Yf On d white are measured for example with a spectrocolorimeter in natural light of model RM200QC of x-rite pantone on a white support and on a black support.
    The difference in opacity between the areas devoid of retaining elements 5 and at least part of the pattern formed by the plurality of retaining elements is equal to the absolute value of the difference in opacity values obtained for the area devoid of retaining elements and for at least part of the pattern formed by the plurality of retaining elements.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIEXYZ color space, a difference in opacity between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements, the difference in opacity being greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal at
    3.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIEXYZ color space, a difference in opacity between a first zone provided with retaining elements and a second zone provided with retaining elements, the difference in opacity being greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to 3.
    In some embodiments, the base and the plurality of retaining elements are made of thermoplastic material.
    As a non-limiting example of a thermoplastic material, mention may be made of a polyolefin, polyethylene, LLDPE (Linear Low Density PolyEthylene or linear low density polyethylene), LDPE (Low 30 Density PolyEthylene or low density polyethylene), m- PE (Metallocene PolyEthylene), HDPE (High Density PolyEthylene or high density polyethylene), EVA (Ethylene Vinyl Acetate) and PP (PolyPropylene), comprising a monomodal or multimodal (for example bimodal) molecular weight distribution, in particular a 35 composition comprising LLDPE and a plastomer, in particular a polyethylene-based plastomer. Polyamide (PA), polyactic acid (PLA), polyhydroxyalkanoates (PHA), PVOH, PBS, polyester, polyvinyl chloride (PVC) or acrylonitrile butadiene styrene (ABS) could also be used.
    In some embodiments, the base and the plurality of retaining elements are made of thermoplastic material comprising a dye.
    The dye can be for example a white dye, for example we can cite the reference 50PP marketed by CABOT and which is loaded with 50% by mass of TiO 2 . As another dye, one can also cite the reference UN55206 manufactured by COLOR SERVICE. These examples are given without limitation.
    The dye can increase the visual contrast between the areas without retaining elements and the pattern formed by the plurality of retaining elements.
    In certain embodiments, the base and the plurality of retaining elements are made of thermoplastic material comprising at most 2% by mass of dye, preferably at most 1.5% by mass, even more preferably at most 1% mass of dye.
    In some embodiments, one end of each retaining element furthest from the base has a colored coating.
    Thus, one can deposit a colored coating, for example an ink or a dye, such as those commonly used in flexography and / or pad printing and / or rotogravure and / or screen printing and / or heliography, in order to deposit the colored coating on the end of each retaining element furthest from the base. The ink can be a solvent-based or water-based ink or else crosslinkable under ultraviolet.
    An ink is generally composed of a mixture of three components: a coloring matter, in particular a pigment or a dye; a vehicle forming the fluid phase of the ink, for example a mixture of polymers, diluents and / or solvent or also water; and additives, such as dispersing agents, defoamers, etc., making it possible to optimize the characteristics of the ink.
    As a mixture of polymers, it is possible to use mixtures comprising for example up to 50% by mass of various acetates, such as ethyl acetate, N propyl acetate, isopropyl acetate, N acetate butyl, and mixtures thereof and / or up to 10% by mass of alcohol.
    One can use organic or inorganic pigments, such as for example diazo dyes, anthraquinone dyes, xanthene, azine and the like, titanium dioxide, carbon black, iron oxides, chromium oxide and the like.
    As a non-limiting example of ink, one can use an ink sold by ULTRA ink under the reference “Type Series 30,000 ALC polyamide” or an ink sold by the company DOMECK EUROFLEX under the reference “Type Series EURO-Film PXA ".
    It is understood that this colored coating can be deposited on a non-colored or colored thermoplastic material, in order to increase the contrast between the areas devoid of retaining elements and the pattern formed by the plurality of retaining elements .
    Typically, an ink roller is coated with ink or dye and the retaining device is driven so that only the retaining elements are brought into contact with the ink roller. The end furthest from the base of each retaining element will thus be covered with a colored coating making it possible to accentuate the visibility of the pattern.
    In some embodiments, the pattern is repetitive in a direction of peeling, the peeling force measured according to the "180 ° peeling" method has at least two peaks and at least one valley between the two peaks, values maximum peaks being increasing with the opening stroke and the at least one valley having a minimum value less than or equal to 85% of a maximum value of the peeling force, preferably less than or equal to 70%, even more than preferably less than or equal to 60%, even more preferably less than or equal to 50%, even more preferably less than or equal to 40%.
    The “180 ° peeling” method is a method which makes it possible to measure the peeling force, that is to say the force to separate the retaining device and the application area. This method is described below.
    Sample conditioning - The samples to be tested are conditioned for 2 h (hour) at 23 ° C +/- 2 ° C with a relative humidity of 50% +/- 5%.
    Preparation of the retaining device - The retaining device is generally used in the direction CD. The retainer is generally in the form of a ribbon, the length of which is in the direction MD. Part of the tape in the MD direction is glued to 80 g / cm 2 paper and a roll of 2 kg (kilogram) is applied or rotated on the retainer in one direction and then in the other (go -back) over the entire length of the ribbon portion. The paper and the retainer are cut using a pair of scissors into 25.4 mm (millimeter) wide strips in the CD direction at a speed of approximately 700 mm / min (millimeter per minute) . Each strip of paper has a length of 210 mm and the retainer is placed in the center of this strip.
    Preparation of the application area - The sample of the application area has a width of 50 mm in the MD direction and the length is at most 200 mm and the sample is cut in half according to the length .
    Assembly - The strip is placed on the sample from the application area so that the retaining device is centered on the sample from the application area. The 2 kg (kilogram) roll is applied or rotated on the strip in one direction and then in the other (round trip) over the entire length of the strip at a speed of approximately 700 mm / min. The sample from the application area is placed in a clamp of a bracket, the cut side being in the clamp and a weight of 1 kg is suspended on the lower part of the strip for 10 s (second). The weight is then removed. This step ensures the correct assembly of the retaining device and the sample from the application area.
    Measurement - The assembly is then placed in a tensile testing machine comprising a 100 N (newton) measuring cell. The strip is inserted into the upper (movable) jaw. The reading of the force measurement cell is set to zero. The sample from the application area is inserted into the lower (fixed) jaw and a slight tension is created. The force must be between 0.02 N and 0.05 N. During installation, the jaws are spaced from each other by 50 mm. The assembly is centered between the two jaws. The test is carried out at constant displacement at a speed of 305 mm / min and the test stroke is 50 mm. This test stroke is adapted according to the width of the restraint to be tested.
    It is understood that the valley is located between two successive peaks. Since the peeling curves are not regular, in order to differentiate one peak from another, it is considered that there is a new peak when the difference in maximum value of two peaks is at least 10% of the maximum value of the greatest force measured, that is to say greater than 10% of maximum value of the largest peak.
    Thanks to the peeling force which has at least two consecutive peaks 10 separated by a valley, the value of the peaks of the peeling force increasing with the opening stroke, the user feels this increasing force required to separate the device for retaining the application area. He therefore perceived that the retaining device was well maintained on the application area. Furthermore, the maximum value of the peeling force is such that the retainer cannot be detached from the application area in an unwanted manner.
    It is generally considered that a peeling force, obtained according to the “180 ° peeling” method, which is greater than or equal to 1.8 N makes it possible to avoid an unexpected detachment of the retaining device and of the zone d application regardless of the restraint and the application area.
    In certain embodiments, the pattern is repetitive in a peeling direction, the peeling force measured according to the "180 ° peeling" method has at least three peaks and at least two valleys, each valley being between two consecutive peaks, the maximum values of the peaks increasing with the opening stroke and the valleys having a minimum value less than or equal to 85% of a maximum value of the peeling force, preferably less than or equal to 70%, again more preferably less than or equal to 60%, even more preferably less than or equal to 50%, even more preferably less than or equal to 40%.
    In some embodiments, the device comprises areas devoid of retaining elements which are continuous in a direction perpendicular to the direction of peeling.
    In certain embodiments, the zones devoid of retaining elements which are continuous in a direction perpendicular to the peeling direction have a width measured in the peeling direction greater than or equal to 2 rows of measured retaining elements in the peeling direction, preferably greater than or equal to 3 rows of retaining elements measured in the peeling direction.
    Although these continuous zones devoid of retaining elements are narrow, they make it possible to define a pattern formed by the retaining elements because they are bordered on each side by retaining elements.
    In certain embodiments, the zones devoid of retaining elements which are continuous in a direction perpendicular to the peeling direction have a width measured in the peeling direction greater than or equal to 1% of the width of the base measured in the direction of peeling, preferably greater than or equal to 2%, preferably greater than or equal to 4%, even more preferably greater than or equal to 5%, even more preferably greater than or equal to 10%.
    In certain embodiments, the retaining device comprises a woven or nonwoven strip or a thermoplastic film or an elastic film or a composite film.
    This woven or nonwoven strip or the thermoplastic film or the elastic film or the composite film serves as a support for the base.
    The term nonwoven means a product obtained after the formation of a sheet of fibers and / or filaments which have been consolidated. Consolidation can be mechanical, chemical or thermal and results in the presence of a bond between the fibers and / or the filaments. This consolidation can be direct, that is to say made directly between the fibers and / or filaments by welding, or it can be indirect, that is to say by means of an intermediate layer between the fibers. and / or the filaments, for example a layer of glue or a layer of binder. The term nonwoven refers to a ribbon-like structure or web of fibers and / or filaments which are intertwined in a non-uniform, irregular or random manner. A nonwoven may have a single layer structure or a multi-layer structure. A nonwoven can also be combined with another material to form a laminate. A nonwoven can be made from different synthetic and / or natural materials.
    Natural materials by way of example are cellulose fibers, such as cotton, jute, linen, and the like, and may also include re-treated cellulose fibers, such as rayon or viscose. Natural fibers for a nonwoven material can be prepared using various methods such as carding. Examples of synthetic materials include, but are not limited to, synthetic plastic polymers, which are known to form fibers which include, but are not limited to, polyolefins, for example polyethylene, polypropylene, polybutylene and similar; polyamide, for example polyamide 6, polyamide 6.6, polyamide 10, polyamide 12 and the like; polyesters, for example polyethylene terephthalates, polybutylene terephthalates, polylactic acids and the like, polycarbonates, polystyrenes, thermoplastic elastomers, vinyl polymers, polyurethanes and mixtures and copolymers thereof. By way of example, the nonwoven may be a nonwoven of the Spunbond, Spunmelt, thermo-bonded carded, SMS, SMMS, SS, SSS, SSMMS, SSMMMS, Air through or other type. These examples are given without limitation.
    The strip is not limited to a nonwoven, and can more generally be a woven material, a knitted material, or a combination of several of these materials.
    The term "thermoplastic film" means a film of thermoplastic material which can be an elastic material or a nonelastic material.
    The term “thermoplastic film of elastic material” is understood to mean a film which can be stretched without breaking under the effect of a stretching force exerted in the lateral direction and which can substantially regain its shape and its initial dimensions after release. this stretching force. It is for example a film which retains a residual deformation or afterglow after elongation and slackening (residual deformation also called “permanent set” or “SET”) of less than 20%, more preferably less than 5%, of its size. initial (before elongation) for an elongation of 100% of its initial dimension, at room temperature (23 ° C).
    The term “thermoplastic film of non-elastic material” means a film which does not fall within the definition of a thermoplastic film of elastic material.
    In certain embodiments, the base is molded onto the strip.
    In certain embodiments, the base has a thickness, measured perpendicular to the upper face of the base, greater than or equal to 10 μm, preferably greater than or equal to 50 μm and less than or equal to 700 μm, preferably less than or equal to 500 µm, even more preferably less than or equal to 100 µm.
    In certain embodiments, the base may have a constant or non-constant thickness between two opposite edges of the base, for example between two opposite edges extending in the direction CD or MD. The base may be continuous or discontinuous between two opposite edges of the base, for example between two opposite edges extending in the direction CD or MD.
    In some embodiments, a height of the retaining elements, measured perpendicular to the upper face of the base is between 3 and 10 times the thickness of the base.
    In certain embodiments, the base has a thickness, measured perpendicular to the upper face of the base, between 10 and 700 μm and a height of retaining elements, measured perpendicular to the upper face of the base, included between 3 and 10 times the thickness of the base.
    In certain embodiments, a minimum distance between two retaining elements is between 0.1 mm and 10 mm.
    In certain embodiments, the pattern has a density of retaining elements greater than or equal to 20 retaining elements per cm 2 , preferably greater than or equal to 50 retaining elements per cm 2 , even more preferably greater than or equal to 100 retaining elements per cm 2 and less than or equal to 250 retaining elements per cm 2 , preferably less than or equal to 200 retaining elements per cm 2 , even more preferably less than or equal to 150 retaining elements per cm 2 .
    According to a second aspect, the present disclosure also relates to a retaining device comprising:
    - a continuous base having an upper face and a lower face; and
    - a plurality of retaining elements extending from the upper face of the base, each retaining element comprising a rod;
    the base comprising at least one zone devoid of retaining elements so that the plurality of retaining elements forms at least one pattern and in which the pattern is repetitive in a peeling direction, the peeling force measured according to the method " 180 ° peeling »with at least two peaks and at least one valley between the two peaks, maximum values of the peaks increasing with the opening stroke and the at least one valley with a minimum value less than or equal to 85% d a maximum value of the peeling force, preferably less than or equal to 70%, even more preferably less than or equal to 60%, even more preferably less than or equal to 50%, even more preferably less than or equal to 40%.
    By reason, it is understood that the distribution of the retaining elements is not uniform over the entire base. Thus, although the retaining elements can be uniformly spaced on the base to form the pattern, certain areas of the base are devoid of retaining elements and make it possible to delimit the pattern.
    The pattern comprises a pattern surface corresponding to the surface covered by circles of radius corresponding to the average pitch and the center of each circle is positioned respectively, when viewed from above, on the center of the retaining elements. The average pitch can correspond to the distance separating two adjacent retaining elements. The at least one area devoid of retaining elements is the surface not covered by the pattern surface.
    Thanks to the peeling force which has at least two consecutive peaks separated by a valley, the value of the peaks of the peeling force increasing with the opening stroke, the user feels this increasing force required to separate the restraint for the application area. He therefore perceived that the retaining device was well maintained on the application area. Furthermore, the maximum value of the peeling force is such that the retainer cannot be detached from the application area in an unwanted manner. This therefore makes it possible to improve the actual and / or perceived sensation / quality per user when using the closure and / or opening retention device.
    It is generally considered that a peeling force, obtained according to the "180 ° peeling" method, which is greater than or equal to 1.8 N makes it possible to avoid an unexpected detachment of the retaining device and the area d application regardless of the restraint and the application area.
    In certain embodiments, the pattern is repetitive in a direction of peeling, the peeling force measured according to the "180 ° peeling" method has at least three peaks and at least two valleys, each valley being between two consecutive peaks, the maximum values of the peaks increasing with the opening stroke and the valleys having a minimum value less than or equal to 85% of a maximum value of the peeling force, preferably less than or equal to 70%, even more preferably less than or equal to 60%, even more preferably less than or equal to 50%, even more preferably less than or equal to 40%.
    In certain embodiments, the device comprises zones devoid of retaining elements which are continuous in a direction perpendicular to the direction of peeling.
    In certain embodiments, the zones devoid of retaining elements which are continuous in a direction perpendicular to the peeling direction have a width measured in the peeling direction greater than or equal to 2 rows of retaining elements measured in the direction of peeling, preferably greater than or equal to 3 rows of retaining elements measured in the direction of peeling.
    In certain embodiments, the zones devoid of retaining elements which are continuous in a direction perpendicular to the peeling direction have a width measured in the peeling direction greater than or equal to 1% of the width of the base measured in the direction of peeling, preferably greater than or equal to 2%, preferably greater than or equal to 4%, still more preferably greater than or equal to 5%, still more preferably greater than or equal to 10%.
    In certain embodiments, in a CIE L * a * b * color space, a color difference ΔΕ * between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retainers is greater than or equal to 1.0, preferably greater than or equal to 1.5, still more preferably greater than or equal to 3.0 still more preferably greater than or equal to 4.5.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE L * a * b * color space, a color difference ΔΕ * between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements, the color difference ΔΕ * being greater than or equal to 1.0, preferably greater than or equal to 1.5, even more preferably greater than or equal to 3.0 still more preferably greater than or equal to 4.5.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE color space L * a * b *, a color difference ΔΕ * between a first zone provided with retaining elements and a second zone provided with retaining elements, the color difference ΔΕ * being greater than or equal to 1.0, preferably greater than or equal to 1.5, even more preferably greater than or equal to 3.0 even more preferably greater than or equal to 4.5.
    In certain embodiments, the retaining element comprises the rod surmounted by a head.
    In certain embodiments, an area of the areas devoid of retaining elements is greater than or equal to 5% of a total area of the base, preferably is greater than or equal to 10%, even more preferably is greater than or equal to 15%.
    In some embodiments, the pattern is a single pattern.
    By single motif is meant an isolated motif in an area of the base measuring 25.4 mm or 30.0 mm or 35.0 mm in the direction MD and 13.0 mm or 25.0 mm or 25.4 mm in direction CD.
    This pattern can for example represent a pattern recognizable by the user, for example a distinctive sign or a mark.
    In some embodiments, the pattern is a repeating pattern.
    In some embodiments, the repeated pattern can be a complex pattern.
    In some embodiments, the pattern has a closed outline.
    In some embodiments, the pattern is arranged so that when the retaining device is urged to open, a force exerted on the retaining device is broken down between at least a first component in peeling force and a second component in shear force.
    In certain embodiments, in a CIE XYZ color space, the difference in opacity between the zones devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements is greater or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to 3.
    In certain embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE XYZ color space, a difference in opacity between the at least one zone devoid of retaining elements and at least part of the pattern formed by the plurality of retaining elements, the difference in opacity being greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to 3.
    In some embodiments, there are several zones provided with retaining elements, each zone provided with retaining elements having, in the CIE XYZ color space, a difference in opacity between a first zone provided with d retaining elements and a second zone provided with retaining elements, the difference in opacity being greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to 3.
    In some embodiments, the base and the plurality of retaining elements are made of thermoplastic material.
    In some embodiments, the base and the plurality of retaining elements are made of thermoplastic material comprising a dye.
    In certain embodiments, the base and the plurality of retaining elements are made of thermoplastic material comprising at most 2% by mass of dye, preferably at most 1.5% by mass, even more preferably at most 1 % by weight of dye.
    In some embodiments, one end of each retaining element furthest from the base has a colored coating 10.
    In certain embodiments, the retaining device comprises a woven or nonwoven strip or a thermoplastic film or an elastic film or a composite film.
    In some embodiments, the base is molded onto the strip.
    [YES] In certain embodiments, the base has a thickness, measured perpendicular to the upper face of the base, greater than or equal to 10 μm, preferably greater than or equal to 50 μm and less than or equal to 700 μm, preferably less than or equal to 500 µm, even more preferably less than or equal to 100 µm.
    In certain embodiments, the base may have a constant or non-constant thickness between two opposite edges of the base, for example between two opposite edges extending in the direction CD or MD. The base may be continuous or discontinuous between two opposite edges of the base, for example between two opposite edges extending in the direction CD or MD.
    In some embodiments, a height of the retaining elements, measured perpendicular to the upper face of the base is between 3 and 10 times the thickness of the base.
    In certain embodiments, the base has a thickness, measured perpendicular to the upper face of the base, between 10 and 700 μm and a height of retaining elements, measured perpendicular to the upper face of the base, included between 3 and 10 times the thickness of the base.
    In some embodiments, a minimum distance between two retaining elements is between 0.1 mm and 10 mm.
    In certain embodiments, the pattern has a density of retaining elements greater than or equal to 20 per cm 2 , preferably greater than or equal to 50 per cm 2 , even more preferably greater than or equal to 100 per cm 2 and less than or equal to 250 per cm 2 , preferably less than or equal to 200 per cm 2 , even more preferably less than or equal to 150 per cm 2 .
    The present disclosure also relates to a ribbon for a retaining device as defined above, the ribbon being intended to be cut into a plurality of retaining devices.
    Brief Description of the Drawings [0118] Other characteristics and advantages of the subject of the present description will emerge from the following description of embodiments, given by way of nonlimiting examples, with reference to the appended figures, in which:
    - Figures 1A-1O are schematic representations of retaining devices according to the present description with different patterns;
    - Figure 2 is a sectional view of Figure IA along the section plane II-II;
    - Figure 3 is a schematic representation of an example of apparatus for producing a retaining device;
    - Figures 4 and 5 are schematic representations of an example of apparatus for producing a retaining device comprising a strip of woven or nonwoven;
    - Figure 6 is a top view in schematic representation of a portion of tape for the retaining device;
    - Figure 7 a top view in schematic representation of another tape for the retaining device;
    - Figure 8 is an enlarged partial view of the pattern of Figure IC;
    - Figure 9 is a view of a retaining device comprising a colored coating;
    - Figures 10 to 14 are graphs representing the peeling force expressed in newton as a function of the opening stroke expressed in millimeters respectively for the patterns 1K-1O;
    - Figures 15 and 16 are schematic representations of equipment used to measure the peel force.
    In all of the figures, the elements in common are identified by identical reference numbers.
    Detailed description [0120] Figure IA schematically shows a retaining device 10 comprising a continuous base 12 and a pattern 14 in the form of a solid disc. As shown in FIG. 2, the base 12 has an upper face 12A and a lower face 12B and the pattern 14 is formed by a plurality of retaining elements 16 extending from the upper face 12A of the base 12. Each element retaining 16 comprises a rod 18. The base 12, in particular the upper face 12A of the base 12, also comprises zones 20 devoid of retaining elements
    16. For reasons of simplification, the retaining elements 16 are represented by hatching in FIGS. 1A to 10 and 6.
    In the embodiment of Figure IA, the retaining device 10 comprises a strip 22 of nonwoven (or woven). For example, the base 12 can be molded onto the strip 22 of nonwoven. The base 12 can also be glued to the strip 22 of nonwoven.
    In what follows, the elements common to the various embodiments are identified by the same reference numerals.
    Similarly, FIGS. 1B-1O show other embodiments of the retaining device 10, in particular of the pattern 14 formed by the retaining elements 16.
    As can be seen in Figures 1A-1B, the pattern 14 can be a single pattern (Figures 1A-1E and IG) or a repeating pattern 14 (Figures 1F and 1H-1O). The pattern 14 may include a closed contour 14A (Figures 1A-1F, 1H-1J and 1M-1O).
    Note that in Figure IG, the areas 20 devoid of retaining elements 16 are present on two edges of the retaining device. However, these zones 20 have a wavy edge which defines the pattern 14.
    As shown in Figure 3, the retaining elements 16 may include the rod 18 surmounted by a head 24. The rod 18 comprises a lower end connected to the base 12, and an upper end opposite the lower end and the head 24 surmounts the upper end of the rod 18. This type of retaining element 16 is generally designated by the term hook or preform which can then be modified, for example by calendering, to obtain a final hook. An example of a method for modifying the preform is described in document FR3050620 (incorporated by reference).
    The retaining device 10 can be manufactured for example by means of an apparatus 100 as shown in FIG. 3. The apparatus 100 makes it possible to manufacture a tape 26 for a retaining device, the tape 26 can then be cut in a plurality of retaining devices 10. The tape 26 comprises the continuous base 12 and a plurality of retaining elements 16. In the embodiment of FIG. 3, the retaining elements 16 are hooks, each hook comprising a rod 18 surmounted by a head 24.
    The apparatus 100 as shown comprises a molding strip 102 positioned on rotary drive means 104 here comprising two rollers 104A, 104B, a material distribution means 106, for example an injector, adapted to produce injection of molding material, for example thermoplastic and / or elastic.
    The assembly formed by the molding strip 102 and the rotational drive means 104 thus forms a molding device.
    The illustrated example comprising two rollers 104A, 104B is not limiting, the number and arrangement of the roller (s) can vary in particular in order to adapt to the length of the molding strip 102 and to the different stations of the apparatus. One could for example use three rollers or even only one so that the molding strip is arranged on the periphery of the single roll. In particular, only one of the two rollers can be driven in rotation by motorized means, for example the roller 104A, the other roller 104B being free, that is to say without motorized means, and driven in rotation via the molding strip , itself driven by the roller 104A.
    The molding strip 102 as presented comprises an internal face 102A and an external face 102B, the internal face 102A being in contact with the rotary drive means 104.
    The material distribution means 106 is arranged so as to inject molding material on the external face 102B of the molding strip 102.
    More specifically, the material distribution means 106 is disposed opposite the molding strip 102, spaced from the molding strip 102 so as to define an air gap e indicated in FIG. 3. Reference is made by the reference A the limit of the material injected on the external face 102B of the molding strip 102, corresponding to the rear edge of the material injected on the molding strip 102 with respect to the direction of movement of the molding strip 102.
    The molding strip 102 is provided with a plurality of cavities 102C allowing the production of hooks of the hook retaining device.
    The cavities 102C are each formed so as to define a rod 102C1 extending from the external face 102B towards the internal face 102A of the molding strip 102 and a head 102C2 extending between the rod 102C1 and the internal face. 102A of the molding strip 102.
    In the example illustrated, the heads 24 of the cavities 102C open onto the internal face 102A of the molding strip 102. The cavities 102C are therefore through. Such an embodiment is not limiting, the cavities 102C can also be blind, and therefore do not open out from the internal face 102A of the molding strip 102 and / or the cavities 102C can comprise only one rod 102C1.
    The portions of the cavities 102C forming the rods 102C1 typically extend in a direction perpendicular to the external face 102B of the molding strip 102. The portions of the cavities 102C forming the rods 102C1 typically have a rotation geometry around an axis perpendicular to the external face 102B of the molding strip 102, or a geometry having a plane of symmetry extending in a direction parallel to the direction of travel of the molding strip 102 and / or in a direction perpendicular to the direction of running of the molding strip 102.
    The portions of the cavities 102C forming the heads 102C2 typically extend radially or transversely with respect to an axis perpendicular to the external face 102B of the molding strip 102, and may have rotational symmetry around this axis perpendicular to the external face 102B of the molding strip 102. The portions of the cavities 102C forming the heads 102C2 typically have a substantially frustoconical or hexahedral shape.
    The portions of the cavities 102C forming the heads 102C2 can be linear or curved, for example to form portions curved towards the internal face 102A or towards the external face 102B of the molding strip 102 extending from the portions of the cavities 102C forming the rods 102C1.
    The portions of the cavities 102C forming the heads 102C2 may have a constant or variable thickness.
    In the example shown in the figures, the portions of the cavities 102C forming the heads 102C2 extend radially around the portions of the cavities 102C forming the rods 102C1, and have a general disc shape.
    The molding strip 102 may have on its internal face 102A or on its external face 102B a particular texturing such as grooves, network of grooves or passage network forming a vent or spikes, or be substantially smooth.
    The molding strip 102 can be formed by a superposition of several strips, and is therefore not necessarily one-piece or single-material.
    The material distribution means 106 is typically arranged so as to inject the molding material into the molding strip 102 in a section of the molding strip 102 where the latter is in abutment against a roll of drive, in this case the drive roller 104A in the example shown in FIG. 3. The drive roller then forms a bottom for the cavities 102C.
    In the case where the injection of molding material is carried out while the molding strip 102 is not in abutment against a drive roller, the material distribution means 106 can then comprise a base arranged the other side of the molding strip
    102, so that the internal face 102A of the molding strip 102 is in abutment against the base when the injection of material is carried out, the base then forming a bottom for the cavities 102C of the molding strip 102.
    The use of a molding strip 102 associated with drive means 104 compared to the use of conventional training means such as rollers in which molding cavities are directly produced is advantageous for several reasons .
    The use of a molding strip 102 is particularly advantageous in terms of modularity. The molding strip can in fact be easily removed and replaced from the drive means, unlike a solid roller for which the disassembly and reassembly operations are particularly complex to perform. Such an advantage is particularly observed when the two rollers 104A, 104B are fixed to a frame on one and the same side, leaving the end of the other side free to introduce / remove the strip of molding. A means of guiding the molding strip can also be used in order to facilitate its introduction and / or removal.
    In addition, the production of a molding strip is greatly simplified compared to the production of a roller comprising molding cavities. Such rollers are in fact typically produced by stacking successive slices, therefore requiring multiple machining operations and causing significant stresses during assembly and at each change of reference hooks and has a large mass requiring the maintenance of these rollers by their two ends, which consequently complicates their replacement.
    The cavities 102C in the molding strip 102 can be produced by a chemical attack process or by the use of a laser at the places where it is desired to form retaining elements 16. It is also possible to envisage carrying out the molding strip 102 with cavities 102C distributed uniformly over the entire molding strip 102 and then plug the cavities 102C at the places where it is desired to form zones 20 devoid of retaining elements 16.
    In FIG. 3, reference C denotes the separation between the ribbon 26 and the molding strip 102, this point corresponding for example to the level from which the base 12 of the ribbon 26 is no longer in contact with the molding strip 102. Provision may be made for the molding strip 102 to embed on the demolding roller 108, that is to say that the demolding roller 106 forms a lever in the molding strip 102 to facilitate the demolding of the preforms and / or hooks.
    In the example shown, the cavities 102C of the molding strip 102 are through. The apparatus can then comprise an element, such as a doctor blade 110, positioned so as to scrape the internal face 102A of the molding strip 102 to remove, if necessary, the excess molding material. By injection is meant the action of shaping a molding material by the molten route, for example, distribution, supply, molding, injection, extrusion.
    The equipment previously presented and the associated method may also have means and a step for associating a strip 22 of nonwoven (or woven) with the base 12.
    Such a combination of a strip 22 on a base 12 comprising retaining elements 16 is typically carried out by means of an adhesive, or via a melting of the base or of the strip.
    In order to achieve such a joining of a strip 22, for example in nonwoven, at the base 12 of the retaining device 10, the proposed apparatus 100 may include strip drive means 22, adapted for to supply a strip and to apply the strip against the lower face 12B of the base 12 downstream of the material distribution means 106.
    Schematically shown in Figures 4 and 5 an example of apparatus 100 comprising such means.
    The apparatus as illustrated is similar to that presented previously with reference to FIG. 3; the elements in common are therefore not described again here.
    As seen in Figures 4 and 5, the apparatus as presented comprises strip drive means 112, here consisting of two rollers 112A, 112B, configured to provide a strip supply 22 downstream of the material distribution means 106.
    The strip 22 is typically a layer of nonwoven material, a thermoplastic film, an elastic film or a composite film, or else a set of fibers and / or filaments thermally consolidated. The strip 22 is for example a sheet of fibers and / or filaments.
    In the example shown in Figures 4 and 5, the strip is shown as being a layer of nonwoven material.
    The substrate drive means 110 are configured to supply the apparatus with strip 22, and apply this strip 22 against the lower face 12B of the base 12 downstream of the material distribution means 106.
    The substrate drive means 110 are configured so that this application is carried out prior to the solidification of the base 12. Thus, this application results in at least partial penetration of the strip 22 beyond a plane defined by the lower face 12B of the base 12. The reference point B is identified by the reference B in the figures between the base 12 and the strip 22.
    More specifically, the lower face 12B of the base 12 is substantially planar, and defines a plane. The application of the substrate against this face leads to penetration of portions of the strip 22, for example of fibers and / or filaments of the layer of nonwoven material in the case where the strip 22 is a layer of nonwoven material at within the base 12, thereby crossing the lower face 12B of the base 12.
    Insofar as such an application is carried out prior to the solidification of the base 12, it is not necessary to heat the base 12 and / or the strip 22 in order to make such a connection.
    For example, considering a base 12 made of polypropylene, the application of the substrate against the lower face 12B of the base 12 is typically carried out when the lower face 12B of the base 12 has a temperature between the melting temperature of the material and the Vicat B softening temperature of the material constituting it minus 30 ° C (degree Celsius) or alternatively between the melting temperature of the material constituting it and the Vicat A softening temperature of the material constituting it. More particularly, when the base comprises a polypropylene-based material, the lower face 12B of the base 12 has a temperature between 75 ° C and 150 ° C, typically of the order of 105 ° C, this temperature being typically measured using an infrared or laser camera. VICAT softening temperature is understood to mean the temperature obtained according to one of the methods described in ISO 306 or ASTM D 1525 standards with a heating rate of 50 ° C / h and a standard charge of 50N for VICAT B and a charge ION standard for VICAT A.
    The strip 22 can be applied in a uniform or non-uniform manner against the lower face 12B of the base 12.
    The connection produced between the strip 22 and the base 12 can be carried out in a uniform or non-uniform manner.
    In the case where the strip 22 is a set of thermally consolidated fibers and / or filaments, the connection with the base 12 is also achieved by penetration into the base 12 of a portion of the fibers and / or filaments of the strip 22.
    In the case where the strip 22 is a set of thermally consolidated fibers and / or filaments, a thermoplastic film, an elastic film or a composite film, it may then result from the bond with the base a phenomenon of shrinkage of the base 12 during its cooling, this recess favoring the bonding surface between the substrate and the base of the ribbon. This shrinkage has no impact on the visual aspect for the end user.
    In the case where the strip 22 is a layer of nonwoven material, the release of the hooks is carried out easily even with a nonwoven whose grammage is less than 80 g / m 2 (mass of material in grams per square meter of nonwoven). For example, the grammage of the nonwoven may be between 5 g / m 2 and 120 g / m 2 , or even between 25 g / m 2 and 100 g / m 2 , or even between 10 g / m 2 and 70 g / m 2 .
    In the case where the strip 22 is a layer of nonwoven material, the apparatus may comprise a calendering device upstream of the substrate drive means 112, thus making it possible to perform a calendering step locally or not of the layer of nonwoven material prior to its application against the base 12.
    This method of securing a strip 12 to a base 12 comprising retaining elements 16 is particularly advantageous in that it does not cause deformation of the base 12, and therefore advantageously makes it possible to keep the shape of the base 12 obtained during the injection step, and in particular to keep the straight edges obtainable via the process and the apparatus described above.
    This method of joining a substrate to a ribbon can be applied to a method of forming a ribbon as described above, or more generally to any other method of forming a ribbon comprising retaining elements such only hooks.
    FIG. 6 schematically represents a portion of ribbon 26 obtained by means of the apparatus 100 of FIG. 4.
    The tape 26 is intended to be cut into a plurality of retaining devices 10. The location of the cutouts is represented by the dotted lines in FIG. 6. The tape 26 and each retaining device 10 comprises a base 12 continuous thermoplastic material and retaining elements 16 forming patterns 14. In this embodiment, the patterns 14 are the patterns 14 of Figure IC.
    FIG. 7 represents a ribbon 26 in top view, which ribbon 26 comprises a base 12 and retaining elements 16, here preforms or hooks. For simplicity, the retaining elements 16 have been enlarged and are shown uniformly distributed on the base 12.
    Figure 7 schematically shows the ribbon 26 obtained with the apparatus 100 of Figure 3. The ribbon 26 therefore extending in a longitudinal direction identified by an axis XX in Figure 7, which is parallel to the direction MD . FIG. 7 also shows the transverse direction, identified by an axis Y-Y, which is parallel to the direction CD.
    We define for this ribbon 26 an edge 26As extending in the direction MD, this edge 26A defining one of the two ends of the ribbon 26 in the direction CD.
    The retaining elements 16, comprising a rod 8 surmounted or not by a head 24, are generally arranged near the edge 26A. The retaining elements 16 are typically arranged at a distance D from the edge 26A of between 2 and 3 steps P between the retaining elements, typically equal to 2 or 3 steps P of the retaining elements, the distance D being measured in the transverse direction relative to the longitudinal direction shown by the axis XX in FIG. 7. The pitch P between two retaining elements 16 corresponds to the distance between the center of two successive retaining elements in the longitudinal direction. In the example shown in Figure 7, the retaining elements 16 are arranged in columns extending in the longitudinal direction materialized by Tax X-X, these columns being repeated identically in the transverse direction.
    Note that Figure 7 is not a representation to scale. Indeed, the distance D between an edge 26A and the first retaining element 5 is shown as being less than the radius R of the circle 28 corresponding to the average pitch. The center of each circle is positioned, when viewed from above, over the center of each retainer and the circumference of a first circle passes through the center of an adjacent retainer. The average pitch can correspond to the distance separating two adjacent retaining elements, that is to say the radius R of the circle 28.
    However, the distance D is typically equal to 2 or 3 average steps.
    Note that on the left side of Figure 7, the retaining device 10 does not include a zone devoid of retaining element 16 within the meaning of this presentation. In fact, the distance D defines a rectilinear strip 15 along the edge 26A of the base 12 devoid of retaining elements. However, this strip does not make it possible to define a pattern within the meaning of the present description, in that this strip is not bordered on each side, in the direction perpendicular to the edge, by retaining devices.
    The retaining elements 16 can also be arranged in staggered rows or “honeycomb”, for example by shifting the columns of retaining elements in the longitudinal direction, as for example that is shown in FIG. 8.
    In Figure 8, only a few circles have been shown on the left side of the figure.
    It is understood that the molding strip 102 has cavities 102C arranged so as to form the pattern 14 in FIG. 8.
    It is understood that this type of retaining device 10 can be obtained by other equipment than molding strip apparatus 102. However, it is understood that the production of a molding strip 102 comprising cavities 102C distributed so that the retaining elements 16 form a pattern 14 on the base 12 is easier than making a roll, for example. In addition, it is relatively easy to change the molding strip 102 of the apparatus 100 of FIGS. 3 to 5 when it is desired to produce a different pattern 14.
    By way of nonlimiting example, the material injected by the material distribution means 106 to form the base 12 and the retaining elements 16 may comprise a colorless thermoplastic material or a thermoplastic material with a dye. The thermoplastic material may in particular be polypropylene.
    The dye may for example be a white dye, for example we can cite the reference 50PP sold by CABOT and which is loaded with 50% by mass of TiO 2 . As another dye, mention may also be made of a purple dye reference UN55206 manufactured by COLOR SERVICE. These examples are given without limitation.
    In all the examples cited, the density of the retaining elements 16 in the pattern (s) 14 is equal to 280 retaining elements 16 per cm 2 of base 12, the retaining elements 16 having a pitch (distance from center with center of two adjacent retaining elements) between two retaining elements equal to 0.64 mm. This density of retaining elements is given by way of nonlimiting example. The base 12 has a thickness E, measured perpendicular to the upper face 12A of the base 12, equal to 60 μm (see FIG. 2). The retaining elements 16 have a height H, measured perpendicular to the base 12, which is equal to 5 times the thickness of the base 12.
    Example 1: a mixture of polypropylene and white dye reference 50PP sold by CABOT and which is loaded with 50% by mass of TiO 2 can be injected. The injected mixture can comprise 99.2% by mass of polypropylene and 0.8% by mass of white dye.
    Example 2: a mixture of polypropylene, purple dye reference UN55206 manufactured by COLOR SERVICE and white dye reference 50PP sold by CABOT and which is loaded with 50% by weight of TiO 2 can be injected. The injected mixture can comprise 99.2% by mass of polypropylene, 0.4% by mass of white dye and 0.4% by mass of purple dye.
    Example 3: Example 3 has the same composition as Example 1 and has a colored coating which is deposited on the retaining elements 16 using an ink and / or a dye, such as those commonly used in flexography. and / or in pad printing, for example black ink, as shown in FIG. 9.
    Example 4: Example 4 has the same composition as Example 2 and has a colored coating which is deposited on the retaining elements 16 using an ink and / or a dye, such as those commonly used in flexography and / or in pad printing, for example black ink, as shown in FIG. 9.
    In the CIE space L * a * b *, the parameters L *, a * and b * are measured respectively for zones 20 devoid of retaining elements and parts of the pattern 14 formed by the retaining elements 16. The values of L *, a * and b * are measured for example with a natural light spectrocolorimeter of model RM200QC of x-rite pantone on a white support and the color difference ΔΕ * between the zones 20 devoid of elements retainer and at least part of the pattern 14 formed by the plurality of retainers 16 is calculated according to equation (1).
    For example 1, the color difference ΔΕ * is equal to 1.606; for example 2, the color difference ΔΕ * is equal to 5.493; for example 3, the color difference ΔΕ * is equal to 7.352 and for example 4, the color difference ΔΕ * is equal to 7.911.
    It is understood that the color difference is present on the retaining devices as soon as the base 12 comprises areas 20 devoid of retaining elements 16. Thus, the color difference between the areas 20 devoid of retaining elements restraint and at least part of the pattern 14 formed by the plurality of retaining elements 16 makes it possible to improve the real sensation / quality and / or perceived by the user when a user uses the restraint device in closing and / or in opening. It is understood that this advantage can be obtained independently of the shape of the pattern 14.
    In the CIE XYZ color space, the difference in opacity between the zones 20 devoid of retaining elements and at least part of the pattern 14 formed by the plurality of retaining elements 16 is measured for example with a natural light spectrocolorimeter of model RM200QC from x-rite pantone. The values of Yfond noir and Yfond blanc are measured on a white support and on a black support respectively for the areas 20 devoid of retaining elements and at least part of the pattern 14 formed by the plurality of retaining elements 16 and 1. opacity expressed in% is calculated according to equation (2) respectively for the zones 20 devoid of retaining elements and at least part of the pattern 14 formed by the plurality of retaining elements 16.
    The difference in opacity between the zones 20 devoid of retaining elements and at least part of the pattern 14 formed by the plurality of retaining elements 16 is equal to the absolute value of the difference in opacity values obtained for the area 20 devoid of retaining elements and for at least part of the pattern 14 formed by the plurality of retaining elements 16.
    For example 1, the difference in opacity is equal to 0.45; for example 2, the difference in opacity is equal to 3.67; for example 3, the difference in opacity is equal to 1.87 and for example 4, the difference in opacity is equal to 12.00.
    As can be seen, the difference in opacity makes it possible to strengthen the perception of the color difference ΔΕ * perceived by the user. Indeed, for example 1, the color difference ΔΕ * being greater than 1, the user can see a difference between the zones 20 devoid of retaining elements and the pattern 14. However, the differentiation between the zones 20 devoid of retaining elements and the pattern 14 is better for example 2 for which the color difference ΔΕ * is equal to 5.493 and the difference in opacity is equal to 3.67.
    The patterns 14 of FIGS. 1A-1O are generally used in the direction CD, that is to say that the peeling, that is to say the separation of the retaining device 10 from a zone of loop application for example is done parallel to the CD direction.
    The patterns 14 of Figures 1A-1D could also be rotated 90 °.
    The pattern 14 of Figure 1E is preferably used as shown in this figure. Indeed, the shape of the pattern 14 being substantially a "V", the separation of the retaining device 10 from an application area transforms the force applied in the direction CD to detach or separate the retaining device 10 from an area of application in a component in peel force and in a component in shear force. It is understood that the pattern 14 of FIG. 1E is arranged so that when the retaining device 10 is biased in opening, a force exerted on the retaining device 10 is broken down between at least a first component in peeling force and a second shear force component. The same is true of the pattern in Figure 1F.
    It will be noted that the patterns 14 in FIGS. 1K to 10 have, in the direction CD, an alternation of zones 20 devoid of retaining elements 16 and of patterns 14 and also, in the direction MD, zones 20 devoid of retaining elements 16 continuous.
    For patterns 1K to 10, FIGS. 10 to 14 respectively show the peeling curves obtained with the “180 ° peeling” method using an application zone 30 sold by APLIX under the reference “SoftLoop Premium by APLIX ”, comprising a loop nonwoven of the thermo-bonded carded type and an SMS nonwoven assembled by hot calendering.
    The peeling curves show the peeling force expressed in N (ordered) as a function of the opening stroke expressed in millimeters (abscissa). The curves presented in Figures 10 to 14 are averages made over 20 measurements. The peeling direction is parallel to the CD direction for all the restraints tested.
    The retaining devices 10 according to the patterns in FIGS. 1K to 10 are prepared in accordance with the “180 ° peeling” method described above.
    FIG. 15 shows a strip 32 comprising the retaining device 10 to be tested, the retaining device being assembled on the application zone 30. The sample from the application zone 30 is placed in a clamp 202 d 'A bracket 200, the cut side 30a being in the clamp 202 and a weight 204 of 1 kg is suspended from the lower part 32b of the strip 32 for 10 s (second). Weight 204 is then removed.
    The assembly is then placed in a tensile testing machine 210 comprising a 100 N measuring cell. The end 32a of the strip 32, that is to say the end opposite to the part lower 32b, is inserted into the upper jaw 212. The reading of the force measuring cell is set to zero. The cut end 30a of the sample from the application zone 30, that is to say the side opposite the uncut side 30b) is inserted into the lower jaw 214 and a slight tension is created. The force must be between 0.02 N and 0.05 N. During installation, the jaws 212, 214 are spaced from each other by mm. The assembly is centered between the two jaws 212, 214. The test is carried out at constant displacement at a speed of 305 mm / min (millimeter per minute) and the test stroke is 50 mm. This test stroke is adjusted as a function of the width of the restraint to be tested so as to allow total separation of the restraint from the application area.
    As can be seen in Figures 10 to 14, the peeling curves have successive peaks P1-P4, each peak having a maximum value greater than the maximum value of the peak which precedes it in the direction of travel d opening, that is to say that between two consecutive peaks taken two by two, the maximum value of the peak having the largest abscissa is greater than the maximum value of the peak having the smallest abscissa, and conversely, the maximum value of the peak having the smallest abscissa is less than the maximum value of the peak having the largest abscissa. Thus, in FIG. 10, the maximum value of the peak PI is less than the maximum value of the peak P2; the maximum value of peak P2 is less than the maximum value of peak P3; the maximum value of peak P3 is less than the maximum value of peak P4. It will also be noted that the minimum value of the valleys V1-V3 is less than 50% of a maximum value of the peeling force, that is to say of the maximum value of the peak P4.
    The same goes for the patterns of Figures 1L-1N.
    Thanks to the peeling force which has at least two consecutive peaks separated by a valley, the value of the peaks of the peeling force increasing with the opening stroke, the user feels this increasing force required to separate the restraint for the application area. He therefore perceived that the retaining device was well maintained on the application area. Furthermore, the maximum value of the peeling force is such that the retainer cannot be detached from the application area in an unwanted manner.
    It can be seen that for the pattern in FIG. 10, the valley V2 has a minimum value which is greater than 50% of the maximum value of the peak P3. We also note that the different peaks P1-P3 are not marked as identifiable as on the other curves (Figures 10 to 13). This is linked in particular to the width L measured in the direction CD of the areas 20 devoid of retaining elements 16 continuous in the direction MD.
    It is understood that the peeling curves also depend on the nature of the application zone 30. However, application zones different from the application zone marketed by APLIX under the reference "SoftLoop Premium by APLIX" will give peeling curves with a similar profile, although the values of peeling force may vary depending on the area of application.
    It is understood that the peeling curves are independent of the color and / or of the color difference ΔΕ * between the zones 20 devoid of retaining elements and at least part of the pattern 14 formed by the plurality of elements retainer 16.
    However, these two characteristics can be combined to reinforce the real and / or perceived sensation / quality per user when a user uses the closure and / or opening retention device.
    Although the present description has been described with reference to a specific embodiment, it is obvious that various modifications and changes can be made to these examples without departing from the general scope of the invention as defined by the claims. In addition, individual features of the various embodiments discussed can be combined in additional embodiments. Therefore, the description and the drawings should be considered in an illustrative rather than restrictive sense.
    The present presentation can find an application in the field of hygiene, diapers, adult incontinence, the packaging industry, for example food packaging, stoma, buildings and the like.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Restraint device (10) comprising:
    - a continuous base (12) having an upper face (12A) and a lower face (12B); and
    - a plurality of retaining elements (16) extending from the upper face (12A) of the base (12), each retaining element (16) comprising a rod (18);
    the base (12) comprising at least one zone (20) devoid of retaining elements so that the plurality of retaining elements (16) form at least one pattern (14), and in a CIE L * color space a * b *, a color difference ΔΕ * between the at least one area (20) devoid of retaining elements and at least part of the pattern (14) formed by the plurality of retaining elements (16) is greater or equal to 1.0, preferably greater than or equal to 1.5, even more preferably greater than or equal to 3.0 still more preferably greater than or equal to 4.5.
    [2" id="c-fr-0002]
    2. A retainer (10) according to claim 1, wherein the pattern (14) is a single pattern.
    [3" id="c-fr-0003]
    3. A retainer (10) according to claim 1, wherein the pattern (14) is a repeating pattern.
    [4" id="c-fr-0004]
    4. Retaining device (10) according to claim 2 or 3, wherein the pattern (14) has a closed contour (14A).
    [5" id="c-fr-0005]
    5. Retaining device (10) according to any one of claims 1 to 4, in which in a CIE XYZ color space, the difference in opacity between the at least one zone (20) devoid of retaining elements and at least part of the pattern (14) formed by the plurality of retaining elements (16) is greater than or equal to 1, preferably greater than or equal to 2, even more preferably greater than or equal to 3.
    [6" id="c-fr-0006]
    6. Retaining device (10) according to any one of claims 1 to 5, wherein the base (12) and the plurality of retaining elements (16) are made of thermoplastic material comprising a dye.
    [7" id="c-fr-0007]
    7. Retaining device (10) according to any one of claims 1 to 6, in which one end of each retaining element (16) furthest from the base (12) has a colored coating.
    [8" id="c-fr-0008]
    8. Retaining device (10) according to any one of claims 1 to 7, in which the pattern (14) is repetitive in a peeling direction, the peeling force measured according to the "180 ° peeling" method present at least two peaks (P1-P4) and at least one valley (VIV3) between the two peaks (P1-P4), maximum values of the peaks increasing with the opening stroke and the at least one valley having a lower minimum value at 85% of a maximum value of the peeling force, preferably less than or equal to 70%, even more preferably less than or equal to 60%, even more preferably less than or equal to 50%, even more preferably less than or equal at 40%.
    [9" id="c-fr-0009]
    9. Retaining device (10) according to any one of claims 1 to 8, comprising a strip (22) of woven or nonwoven or a thermoplastic film or an elastic film or a composite film.
    [10" id="c-fr-0010]
    10. Retaining device (10) according to any one of claims 1 to 9, in which the base (12) has a thickness (E), measured perpendicular to the upper face (12A) of the base (12), included between 10 and 700 pm and a height (H) of retaining elements (16), measured perpendicular to the upper face (12A) of the base (12), between 3 and 10 times the thickness of the base (12) .
    [11" id="c-fr-0011]
    11. Tape (26) for a retaining device according to any one of claims 1 to 10, the tape (26) being intended to be cut into a plurality of retaining devices (10).
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    同族专利:
    公开号 | 公开日
    KR20200126375A|2020-11-06|
    JP2021511179A|2021-05-06|
    BR112020014616A2|2020-12-08|
    BR112020014619A2|2020-12-08|
    CN111655215A|2020-09-11|
    KR20200126376A|2020-11-06|
    WO2019145647A1|2019-08-01|
    WO2019145646A1|2019-08-01|
    US20200352800A1|2020-11-12|
    JP2021511180A|2021-05-06|
    EP3743030A1|2020-12-02|
    US20210015688A1|2021-01-21|
    CN111655214A|2020-09-11|
    EP3743031A1|2020-12-02|
    FR3077186B1|2020-01-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20140338159A1|2011-09-16|2014-11-20|3M Innovative Properties Company|Fastening member and fastening segment|
    US20140358107A1|2013-05-28|2014-12-04|The Procter & Gamble Company|Absorbent article with elastically elongatable panel|
    US20160128877A1|2013-06-13|2016-05-12|3M Innovative Properties Company|Fastening tape and mechanical fastener including microporous film|WO2021116613A1|2019-12-11|2021-06-17|Aplix|Molding strip and improved formation method|
    FR3104387A1|2019-12-11|2021-06-18|Aplix|Improved molding tape and forming process.|US8051540B2|2008-02-29|2011-11-08|Velcro Industries B.V.|Releasable fastening arrangement|
    US9138957B2|2010-06-21|2015-09-22|3M Innovative Properties Company|Slit hook strips and laminates and articles containing the same|
    FR3050620B1|2016-04-29|2019-08-02|Aplix|IMPROVED RETENTION DEVICE COMPRISING REINFORCED RETAINING ELEMENTS|FR3104388A1|2019-12-11|2021-06-18|Aplix|Improved hook-and-loop device and associated molding device.|
    法律状态:
    2019-01-23| PLFP| Fee payment|Year of fee payment: 2 |
    2019-08-02| PLSC| Publication of the preliminary search report|Effective date: 20190802 |
    2020-01-22| PLFP| Fee payment|Year of fee payment: 3 |
    2021-01-21| PLFP| Fee payment|Year of fee payment: 4 |
    2022-01-21| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1850645A|FR3077186B1|2018-01-26|2018-01-26|RETAINER AND TAPE FOR RETAINER|
    FR1850645|2018-01-26|FR1850645A| FR3077186B1|2018-01-26|2018-01-26|RETAINER AND TAPE FOR RETAINER|
    BR112020014619-6A| BR112020014619A2|2018-01-26|2019-01-25|RETENTION DEVICE AND TAPE FOR RETENTION DEVICE.|
    KR1020207024639A| KR20200126376A|2018-01-26|2019-01-25|Holding devices and tapes for holding devices|
    US16/964,713| US20210015688A1|2018-01-26|2019-01-25|Retention device and tape for retention device|
    EP19710018.3A| EP3743030A1|2018-01-26|2019-01-25|Retention device and tape for retention device|
    PCT/FR2019/050163| WO2019145647A1|2018-01-26|2019-01-25|Retaining device, and strip for a retaining device|
    US16/964,755| US20200352800A1|2018-01-26|2019-01-25|Retention device and tape for retention device|
    BR112020014616-1A| BR112020014616A2|2018-01-26|2019-01-25|RETENTION DEVICE AND TAPE FOR RETENTION DEVICE.|
    JP2020560606A| JP2021511180A|2018-01-26|2019-01-25|Holding device and tape for holding device|
    CN201980010371.9A| CN111655214A|2018-01-26|2019-01-25|Holding device and belt for holding device|
    PCT/FR2019/050162| WO2019145646A1|2018-01-26|2019-01-25|Retention device and tape for retention device|
    JP2020560605A| JP2021511179A|2018-01-26|2019-01-25|Holding device and tape for holding device|
    KR1020207024638A| KR20200126375A|2018-01-26|2019-01-25|Holding devices and tapes for holding devices|
    EP19710019.1A| EP3743031A1|2018-01-26|2019-01-25|Retaining device, and strip for a retaining device|
    CN201980010372.3A| CN111655215A|2018-01-26|2019-01-25|Holding device and belt for holding device|
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