• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a hygiene product, comprising at least one layer of a nonwoven, wherein the nonwoven layer comprises man-made cellulose fibers, wherein the layer or layers has a Rücknässewert less than or equal to 30% and a suction less than or equal to 6 seconds, for the Use in disposable hygiene products, for example in diapers, sanitary napkins and incontinence products, or in wet wipes such as toilet tissues, facial tissues, facial tissues, baby wipes and sanitary wipes for cleaning and disinfecting.
    公开号:AT512621A2
    申请号:T253/2012
    申请日:2012-02-28
    公开日:2013-09-15
    发明作者:
    申请人:Chemiefaser Lenzing Ag；
    IPC主号:
    专利说明:

    PL0521 # ♦ · · · · • • < fl * * ·
    Hvqieneprodukt
    The present invention relates to a hygiene product, in particular for use in wet wipes and in the form of sheath webs and acquisition / distribution layers in disposable absorbent hygiene products such as sanitary napkins, incontinence products and baby diapers.
    Moisturizers are absorbent nonwovens with lotion for cleaning or disinfecting the skin or surfaces. These are products such as toilet tissues, facial tissues, facial tissues, baby wipes and sanitary napkins.
    Absorbent hygiene products may be constructed of a topsheet, a containment / distribution layer, an absorbent core, and a backsheet. These are sandwich structures with an absorbent core, often comprising a blend of fibrillated fluff pulp and superabsorbent polymer (SAP).
    The cover fleece is usually a sheet of polyester (PET) or polypropylene (PP) fleece or may be a blend of both materials. The pick-up / distribution layer is mainly made of fluff pulp and bicomponent fibers made by airiaid technology and air jet bonding. It serves to distribute the liquid from the cover fleece and from there to the absorbent body to reduce the wetness on the skin and to improve the absorbency of the absorbent body. The backsheet is usually formed of a polyethylene (PE) film, or alternatively a nonwoven / film composite, which may be breathable. It prevents moisture from being passed on to the clothing. The product is attached to the undergarment by means of an adhesive tape on the backsheet which is protected by a protective paper prior to use. The product is designed to protect the skin, for comfort and to reduce odor.
    According to EDANA, absorbent hygiene products such as baby diapers, incontinence products and sanitary napkins have all become essential components of our lives today. Healthy skin and good hygiene have an effect on well-being, performance and comfort. For the last twenty years, absorbent personal care products have contributed to improved skin health and hygiene through the use of innovative nonwoven wrapping materials which are rapidly penetrated by fluids into underlying plies, thereby reducing wetness on the skin.
    REPLACED PL0521
    • * • t • ♦ * * • t · · · # · · * «· · · · et * · · · ·« · · · ···································································
    Current materials used in personal care absorbent products are mainly made from synthetic materials such as polypropylene (PP) spunbond, polyester (PET), and bicomponent fibers to provide low liquid penetration time (wicking time) and low wicking the wetness on the skin is reduced.
    The pick-up / distribution layer is mainly made of fluff pulp and bicomponent fibers made by airlaid technology and air-through-air bonding.
    Due to environmental considerations, cellulosic fibers, particularly man-made cellulosic fibers, are becoming increasingly important, and there is a need for nonwoven webs made from cellulosic fibers which have low liquid penetration, low wicking, and improved liquid management in sanitary absorbent products.
    It is mentioned in US 2009/0131909 that cellulose fibers treated with hydrophobizing agents are suitable for the production of nonwoven webs. However, the document does not contain any statements about the manure and liquid penetration behavior of envelopes, in particular those made from man-made cellulosic fibers.
    The object of the invention is to provide a hygiene product which enables the rapid penetration of the liquid without wetting the surface of the hygiene products, which contributes to the maintenance of a good skin health (dry gTT).
    The hygiene product according to the invention comprises at least one layer of a nonwoven, wherein the nonwoven layer comprises man-made cellulose fibers, wherein the layer or layers has or have a return value of less than or equal to 30% and an intake time of less than or equal to 6 seconds.
    A single-ply nonwoven made from hydrophobic man-made cellulosic fibers having a low hydrophobing agent content has a low wicking time but increases the re-wicking value. Surprisingly, it has been found that the addition of wetting agents to the nonwoven having a high content of hydrophobing agent improves the behavior in terms of the liquid penetration (suction time). The wetting agent lowers the surface tension of the hydrophobic fibers in the nonwoven fabric, allowing the nonwoven to wets completely and allowing the fluid to pass through. Such single-layered products are particularly suitable for enveloping nonwovens and wet wipes. FOLLOW-UP | PL0521
    • • »* · · · • • • *» »♦ ♦♦ ♦ t • · ·« · ··
    A sanitary product composed of a layer of nonwoven fabric wherein the nonwoven fabric comprises a blend of man-made cellulosic fibers and hydrophobic man-made cellulosic fibers and wherein the nonwoven is treated with a wetting agent has a low wicking time.
    Preferably, the sanitary product comprises a blend of 75 to 90% by weight of hydrophobic man-made cellulose fibers and 25 to 10% by weight of man-made cellulose fibers, provided that the total amount of the nonwoven fabric is 100% by weight.
    The nonwoven for the one layer or the first layer is preferably perforated
    Man-made cellulose fibers are inherently hydrophilic. To produce hydrophobic man-made cellulose fibers, the normal fibers are treated with a hydrophobing agent. The preferred hydrophobizing agent is an alkyl ketene dimer (AKD) wherein the hydrophobic fibers contain the hydrophobizing agent in an amount of 0.005 to 0.5% by weight, preferably 0.01 to 0.1% by weight. Other suitable hydrophobizing agents are DACC (dialkylcarbamoyl chloride) or stearic acid amides such as Leristan HE 1/42 from Zschimmer & Chat.
    The invention will be illustrated by the following examples.
    test methods
    Suction time ___________ _ _______________ _ _
    The wicking test is a modified version of the method described in US 2007/0219517 to Johnson & Johnson's litigation:
    A nonwoven sample was cut and clamped onto an absorbent core. The absorbent core used is a typical liquid-absorbent material commonly used in disposable absorbent products. The absorbent material of the core used in this invention includes hydrophilic fibers, for example, cellulosic fibers (fluff pulp, rayon), and superabsorbent products, for example, sodium acrylate-acrylic acid polymers.
    The test fluid is a mixture of 49.50% sodium chloride solution (0.9% by weight) and 49.05% glycerol, 1.00% phenoxyethanol and 0.45% sodium chloride.
    A small amount of blue tint was also added to the test liquid to facilitate monitoring of the liquid distribution during testing, 4.0 mL of test liquid was pipetted onto the nonwoven from a height of 3 cm. The period of time will be PL0521
    From the first dispensing of the liquid until the time when all the liquid had passed through or entered the enveloping fleece, it was detected. The time to pipette the 4.0 ml of liquid was about 3.6 seconds. Rear wet weight
    The main rewet test used in the evaluation was a modified version of the method set forth in US 2007/0219517:
    Stacks of ten Whatman 41 7 cm diameter filter papers were weighed and centered on the suction time test area, 5 minutes (± 10 sec) after completion of the wicking time test. The filter papers were subjected to a pressure of 4.14 kPa for 5 minutes (± 10 sec). Then the filter papers were removed and reweighed to calculate the return value.
    Production of nonwovens for enveloping nonwovens
    Parallel laid nonwovens were carded and solidified with water jet. The average basis weight was 30 g / m2. All fabrics were hydroentangled on a perforating belt having an opening size of about 14% and an average pore size of about 2.4 mm 2.
    Example 1 (comparison)
    Carded. Water-jet bonded and perforated (medium mesh) 30 g / m2 nonwovens were prepared from hydrophobic viscose matte at 1.7 dtex for different runs of the AKD 452 N hydrophobing agent (AKD 452 N is an alkyl ketene dimer formulation commercially available from the company Kemira is available). Mixtures of the hydrophobic viscose fibers with man-made cellulose fibers were also tested. The wicking time and wetness values of the cladding webs were tested according to the test methods described above.
    Table 1 shows that viscose fibers having a low level of hydrophobing agent (samples 1.3.1.4) have a wicking time of about the same value as the polyester nonwoven reference (sample 1.1), but the wicking value is higher than desired for this application. With a higher concentration of hydrophobizing agent on the fiber, the wicking time is out of range (Sample 1.5). Also out of the range are the blends of man-made cellulosic hydrophobic fibers with man-made cellulosic fibers in which the proportion of hydrophobic man-made cellulosic fibers is greater than 25% (Samples 1.6 and 1.7). A mix of 25%
    ACCORDING PL0521 ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
    Hydrophobic man-made cellulose fibers with man-made cellulose fibers have sufficient performance (Sample 1.8).
    Table 1
    Sample Perforated nonwovens Suction time (8) Wetness (%) 1.1 Polyester (PET) (comparison) AP 7 1.2 Viscose (comparative) 5.0 64 1.3 hydrophobic viscose with 0.005% AKD 4.4 51 1.4 90% hydrophobic viscose with 0.01 % AKD + 10% Tencel 4.8 47 1.5 hydrophobic viscose with 0.05% AKD> 20 not determinable 1.6 75% hydrophobic viscose with 0.1% AKD + 25% viscose> 60 not determinable 1.7 75% hydrophobic viscose with 0.1% AKD + 25% Tencel> 60 not determinable 1.8 25% hydrophobic viscose with 0.1% AKD + 75% Tencel 6 30
    Example 2
    In order to improve the wettability of the hydrophobic nonwoven fabrics as well as to reduce the wicking time and the wicking value, nonwovens prepared from 1.7 dtex hydrophobic viscose with 0.1% AKD 452N were additionally coated with a wetting agent (Plantacare 810 UP) Fa. BASF Treats a 1.0% Solution of Wetting Agent Plantacare 810 UP. (50% active ingredient) was prepared with distilled water and the pH was corrected to pH 5 with 30% citric acid solution. This solution was applied by means of a fine mist atomizing spray to the upper surface layer of the nonwoven mats in an amount of 1% active wetting agent based on the weight of the nonwoven fabric. Before testing, the samples were allowed to dry under ambient conditions overnight. Sucking time and wetness values were checked for each fabric according to the test methods described above.
    It can be seen that nonwovens made from 75% hydrophobic rayon blends with 0.1% AKD 452N with 25% viscose fibers (Sample 1.6) or with 25% Tencel fibers (Sample 1.7) with an additional treatment with 1% of the wetting agent " Plantacare 810 UP " considerably reduced the intake time of the envelope and the return values (samples 2.1 and 2.2).
    Table 2
    Sample composition by average intake time (8) Rewetting (%)
    | FOLLOW PL0521 iUi. ** # * "! ≪ " 2.1% hydrophobic viscose with 0.1% AKD + 25% viscose + wetting agent 4.9 30 2.2 75% hydrophobic viscose with 0.1% AKD + 25%. *** "" % Tenoel + wetting agent 5 30
    These fibers and fabrics can be used in various applications, such as in wet wipes, to achieve improved softness along with improved wettability and improved lotion management, which are beneficial to end users.
    Another object of the invention is to provide a nonwoven layer as a receiving / distributing layer which substantially reduces the wicking time and the wicking value in combination with overwrap webs. Surprisingly, it has been found that the wicking time and rewet of cladding nonwovens is significantly improved when these cladding nonwovens a second layer of thermally bonded nonwoven fabric comprising man-made cellulose fibers.
    The sanitary product according to the invention comprises two layers of nonwoven fabric and is characterized in that the first layer comprises a synthetic fiber or hydrophobic man-made cellulose fiber and the second layer comprises a man-made cellulose fiber.
    The first layer may consist of 100% by weight of hydrophobic man-made cellulose fiber or may consist of mixtures of 75 to 99.5% by weight of hydrophobic man-made cellulose pulp and 0 ^ 5 to 25% by weight man-made cellulose fiber, provided that the total amount 100% by weight. The first layer can also consist of synthetic fibers such as polyester.
    In a preferred embodiment, the second layer is a thermally bonded nonwoven fabric of man-made cellulosic fiber and a thermoplastic material, wherein the thermally-consolidated nonwoven fabric consists of 50 to 90% by weight man-made cellulose fibers and 50 to 10% by weight thermoplastic fibers, provided that the total amount is 100% by weight. Suitable for the thermally bonded nonwoven are man-made cellulose fibers with modified cross-sections, for example with multi-lobed, irregular, triangular and hollow cross-sections.
    A preferred man-made cellulosic fiber for use in the thermally bonded nonwoven web is a trilobal man-made ceflulose fiber. Such a fiber is in the Lenzing AG
    NACHGER0CHT PL0521 under the trademark "Viscostar". available. The denier of this fiber is 1.3 to 6.7 dtex, preferably 3 to 4 dtex. Another preferred man-made cellulosic fiber for use in the thermally bonded web is a lyocell fiber. The titer of the lyocell fiber is in the range from 0.9 to 9 dtex, preferably from 3.3 to 6.7 dtex. A lyocell fiber is available from Lenzing AG under the trademark Tencel1 '. The staple length of both fiber types is 4 to 90 mm, preferably 10 to 60 mm.
    The preferred thermoplastic fiber is a bicomponent fiber, such as a PET / CoPET core / sheath bicomponent fiber, a PET / PE core / sheath bicomponent fiber, or a PE / PP core / sheath bicomponent fiber.
    The ply is an airlaid drylaid or wetlaid nonwoven that can be made by these particular methods. All solidification methods are possible. The fleece is a needled, hydroentangled, thermally bonded or chemically bonded nonwoven.
    A preferred nonwoven web is formed by the " Lyocell meltblowing process " The nonwoven web is produced directly by a melt-blowing method using a cellulose solution in N-methylmorpholine-N-oxide ("NMMO") as disclosed in WO 2007/124522.
    The webs have a basis weight between 5 and 100 g / m 2, preferably between 10 and 40 g / m 2.
    Example 3 30 g / m 2 nonwoven webs were made from various types of fibers and their blends by thermal consolidation (through-through) for use in a pick-and-place layer (ADL).
    Parallel laid webs were made and the compressed webs were heated at 150 ° C for 2 minutes to thermally solidify the fabrics. The mean textile fabric density was about 30 g / m 2. The prepared and tested thermally-solidified ADL sheets were; A blend of 70% "Viscostar" trilobal viscose (3.3 dtex) and 30% bicomponent binder fiber (4 dtex, 50:50 concentric polyethylene / polypropylene sheath / core fiber) used in Sample 3.1, 3.3, 3 , 5 and 3.7.
    POSSIBLE PL0521 m • · · • • · «« «« «« «« «« «· · · · · · · · · · % Tencei 3.3 dtex and 30% bicomponent binder fiber (4 dtex, 50:50 concentric polyethylene / polypropylene sheath / Kenv fiber) used in Samples 3.6 and 3.8. For these tests, three different perforated fabrics with 30 g / m2 were used for envelope nonwovens. A typical absorbent core was used and ADL nonwovens (30 g / m 2) were placed between the cladding webs and the absorbent core. Suction time and wetness were tested according to the test methods described below. The results of these experiments are shown in Table 3.
    First check of ADL layers
    The wicking / wetness test used to evaluate the ADL was another modified version of the method set forth in US 2007/0219517. Samples of the batting, ADL and core material were cut and weighed. The components were superimposed - with the top fleece at the top, the ADL in the middle and the bottom core - and then clamped to the test stand.
    The suction time was measured as before with 4.0 ml of the standard test liquid, which was pipetted from a height of 3 cm onto the Hüllvlies. The time span from the first dispensing of the liquid to the time when all the liquid had passed through the enveloping fleece or into the enveloping fleece was recorded.
    The return wetness was also repeated as before by means of a stack of ten Whatman 41 of ^ 7 cm
    Upon completion of the test, the sample was disassembled immediately and the three components were also weighed to determine the distribution of the liquid in the sample. For comparative purposes, a test without ADL was performed.
    Table 3
    Sample Hüllvlies (first layer) ADL (second layer) Suction time (s) Rewet (%) 3.1 90% hydrophobic viscose + 10% Tencei (sample 1.4) 70% trilobal viscose 3.3 dtex + 30% bicomponent fibers (thermal consolidation) 4.3 20 3.2 90% hydrophobic viscose + 10% tencei (sample 1.4) none ADL (comparative) 4.8 47 3.3 hydrophobic viscose (sample 1.5) 70% trilobal viscose 3.3 dtex + 30% bicomponent fibers (thermal consolidation ) 4.3 &lt; 1.5 REPLACEMENT PL0521 3.4 hydrophobic viscose (sample 1.5) no ADL (comparative)> 20 not detectable 3.5 hydrophobic viscose with 0.01% AKD 70% trilobal viscose 3.3dtex + 30% bicomponent fibers (thermal consolidation ) 4.6 29 3.6 hydrophobic viscose (Sample 1.5) 70% Tencel 3.3 dtex + 30% bicomponent fibers (thermal consolidation) 4.0 &lt; 1.5 3.7 Polyester 70% trilobal viscose 3.3 dtex + 30% bicomponent fibers (thermal consolidation ) 4.0 <1.0 3.8 Polyester 70% Tencel 3.3 dtex + 30% bicomponent fibers (thermal consolidation) 4.0 <1.0
    It can be seen that the nonwovens, made from 70% trilobal viscose or 70% lyocell fibers (Tencel) in blends with 30% bicomponent fibers processed by carding and thermal strengthening, significantly improve the rewet performance of the absorbent inserts when they are used used as a receiving / distributing layer in combination with enveloping nonwovens made of hydrophobic man-made cellulose fibers and also with polyester wrapping nonwovens (samples 3.7 and 3.8).
    The nonwovens of the present invention find use in disposable hygiene products such as diapers, sanitary napkins and incontinence products. Personal care products comprising a nonwoven web layer (a monofilament nonwoven web) comprising a blend of man-made cellulose fibers and hydrophobic man-made cellulose fibers, and wherein the web is treated with a wetting agent, are particularly useful as wet wipes.
    SUBSEQUENT
    权利要求:
    Claims (18)
    [1]
    Claims 1. A hygiene product comprising at least one layer of a nonwoven, the nonwoven layer comprising man-made cellulose fibers, characterized in that the layer or layers have a backwash value less than or equal to 30% and a suction time smaller equal to 6 seconds or have.
    [2]
    The hygiene product according to claim 1, characterized in that the product comprises a layer of a nonwoven fabric, wherein the nonwoven fabric comprises a mixture of man-made cellulose fibers and hydrophobic man-made cellulose fibers and wherein the nonwoven fabric is treated with a wetting agent.
    [3]
    3. The hygiene product according to claim 1 or 2, characterized in that the nonwoven fabric comprises a mixture of 75 to 90% by weight of hydrophobic man-made cellulose fibers and 25 to 10% by weight of man-made cellulose fibers, provided that the total amount of the nonwoven 100 Weight%.
    [4]
    A sanitary product according to claim 1, comprising two layers of nonwoven fabrics, characterized in that the first layer comprises synthetic fibers or hydrophobic man-made cellulose fibers and the second layer comprises man-made cellulose fibers.
    [5]
    5. Hygiene product according to claim 1 to 4, characterized in that the one layer or the first layer is in each case an airlaid, Drylaid or Wetlaid fleece.
    [6]
    6. A hygiene product according to claim 1 to 5, characterized in that the nonwoven is a needled, water-jet solidified, thermally bonded or chemically bonded nonwoven web or a nonwoven web, which directly by means of a meltblown process from a cellulose solution in N-methyl-morpholine-N- Oxide ("NMMO").
    [7]
    7. A hygiene product according to claim 4, characterized in that the first layer consists of 100% hydrophobic man-made cellulose fibers.
    [8]
    A sanitary product according to claim 4, characterized in that the first layer consists of a mixture of 75 to 99.5% by weight of hydrophobic man-made cellulose fibers and 0.5 to 25% by weight of man-made cellulose fibers, provided that the Total amount 100% by weight. FOLLOW-UP • «η

    PL0521
    [9]
    9. Hygiene product according to claim 4 or 6, characterized in that the second layer consists of a thermally bonded nonwoven made of man-made cellulose fibers and a thermoplastic material.
    [10]
    The sanitary product according to claim 9, characterized in that the thermally bonded nonwoven fabric consists of 50 to 90% by weight of man-made cellulose fibers and 50 to 10% by weight of thermoplastic fibers, provided that the total amount is 100% by weight.
    [11]
    A sanitary product according to any of claims 9 to 10, characterized in that the man-made cellulose fiber has a modified cross-section, for example a multi-lobed, irregular, triangular and hollow, and is preferably a trilobal man-made cellulose fiber.
    [12]
    12. Hygiene product according to claim 9 to 10, characterized in that the man-made cetlulose fiber is a lyocell fiber.
    [13]
    13. Hygiene product according to claim 9 to 10, characterized in that the thermoplastic fiber is a bicomponent fiber.
    [14]
    14. A hygiene product according to claim 1 to 8, characterized in that the hydrophobic --- man-made cellulose fibers are treated with a water repellent. _____
    [15]
    15. Hygiene product according to claim 1 to 8, characterized in that the hydrophobizing agent is an alkyl ketene dimer.
    [16]
    16. Hygiene product according to claim 1 to 8, characterized in that the hydrophobic fibers contain the .Hrobrophobierungsmittel in an amount of 0.005 to 0.5% by weight, preferably from 0.01 to 0.1% by weight.
    [17]
    Use of a nonwoven fabric according to any one of the preceding claims in disposable hygiene products such as diapers, sanitary napkins and incontinence products.
    [18]
    18. Use of a nonwoven fabric according to any one of claims 1 to 3 in wet wipes such as toilet tissues, facial tissues, Kosmetiktüchem, Babytüchem and Sanitärtüchern for cleaning and disinfecting.

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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA253/2012A|AT512621B1|2012-02-28|2012-02-28|hygiene product|ATA253/2012A| AT512621B1|2012-02-28|2012-02-28|hygiene product|
    US14/381,029| US11083817B2|2012-02-28|2013-02-22|Hygiene product|
    EP13722972.0A| EP2819712B1|2012-02-28|2013-02-22|Hygiene product|
    TR2019/09346T| TR201909346T4|2012-02-28|2013-02-22|Hygiene product.|
    SI201331479T| SI2819712T1|2012-02-28|2013-02-22|Hygiene product|
    CN201380011454.2A| CN104244997B|2012-02-28|2013-02-22|Amenities|
    PCT/AT2013/000033| WO2013126934A1|2012-02-28|2013-02-22|Hygiene product|
    PL13722972T| PL2819712T3|2012-02-28|2013-02-22|Hygiene product|
    JP2014557942A| JP6226890B2|2012-02-28|2013-02-22|Hygiene products|
    ES13722972T| ES2733053T3|2012-02-28|2013-02-22|Hygiene product|
    TW102107012A| TWI589279B|2012-02-28|2013-02-27|Hygiene product|
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