• 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 present invention is directed to a glass container with an outer glass surface with an inkjet printed image applied to said surface and comprising a CEC with a thickness between 0 and 20 nm, or no CEC present between the outer glass surface and the inkjet printed image, and wherein the non-printed area of the outer glass surface comprises a friction-reducing coating. In addition, the present invention is directed to a method for inkjet printing an image on a glass container comprising the steps of: a) providing a glass container that has no CEC on its outer surface, or of which a CEC is at least partially has been removed to a level between 0 and 20 nm, b) inkjet printing of an image on a glass container, leaving an unprinted area c) depositing a friction-reducing coating on at least a portion of the unprinted area.
    公开号:BE1025835B1
    申请号:E20175886
    申请日:2017-12-01
    公开日:2019-09-03
    发明作者:Mondt Roel De；Marin Steenackers；Johan Vandecruys；De Velde Johan Van
    申请人:Anheuser Busch Inbev Sa；
    IPC主号:
    专利说明:

    Glass container comprising an inkjet printed image and a method for producing it
    FIELD OF THE INVENTION
    The present invention relates to glass containers, more specifically glass bottles, decorated with printed images on the glass surface. Furthermore, the present invention relates to a method for producing such glass containers.
    BACKGROUND OF THE INVENTION
    It is well known in the art that beverage bottles have a smooth and protective transparent coating, the so-called cold-end coating (CEC), on the outer surface. Such CEC prevents the glass container from being scratched and protects it in an abrasive or corrosive environment. The CEC, typically a polyethylene wax, ensures that the glass surface becomes smooth. The resulting low coefficient of friction reduces the forces during bottle-to-bottle contact on bottle lines and transport. Bottles coated in this way move freely through inspection and filling lines and suffer less damage to the surface. A damaged surface looks bad for the consumer and weakens the glass, which often results in early breaking. In addition, instead of accepting an increase in bursting pressure, the bottle can be made lighter while still retaining its strength.
    Today, when producing glass containers, a coating is applied in two steps to ensure scratch resistance and smoothness of the glasses
    BE2017 / 5886 containers available. In the first step, the so-called hot-end coating (HEC) is applied by means of chemical vapor deposition (GVD) of a metal-containing compound on the newly formed, hot and single or double line glass containers. Such an HEC is based on a coating precursor comprising tin, titanium, other heat-decomposable metals or organometallic compounds. This application is done in a so-called coating tunnel or coating hood where the HEC is applied by chemical vapor deposition to form a thin layer of metal oxide, for example tin oxide. The intention is to coat the outside of the glass container with a homogeneous equal layer, except for the so-called final layer. Because this happens in the vapor phase and on glass containers transported in a single line, a relatively homogeneous distribution can easily be obtained. The thin layer of metal oxide, often tin oxide, forms the basis for the second coating, the so-called cold-end coating (CEC). After applying the HEC, the glass containers are usually passed through a special type of oven, also called an annealing oven. The latter is specifically designed for annealing glass and to cool the containers in a controlled manner. The glass is heated to the relaxation temperature and then cooled slowly. This process relieves internal tensions, which makes the glass more durable.
    In a subsequent process step, images of the logo, ingredients, etc. that match the
    BE2017 / 5886 contents of the bottle are typically printed on the CEC, eg by screen printing.
    An important problem, however, is that in all industries, more specifically the packaging industry, printing continues to move towards digitization with greater speed, quality, flexibility and efficiency. Unfortunately, screen printing is not a digital printing technique, such as inkjet printing is. Offset and flexographic printing systems are also increasingly being replaced by print applications by industrial inkjet printing systems due to their flexibility in use, eg variable data printing, and their improved reliability, which makes their inclusion in production lines possible.
    In inkjet printing, small droplets of ink fluid are projected directly onto an ink-receiving surface without physical contact between the printing device and the ink receiver. The printing apparatus electronically stores the print data and controls a mechanism for image-wise expelling the drops. Printing is accomplished by moving a printhead over the ink receiver or vice versa, or both.
    Upon irradiating the inkjet ink on an ink receiver, the ink typically comprises a liquid carrier and one or more solids, such as dyes or pigments and polymers. Ink compositions can be roughly divided into: water-based, the drying mechanism comprising absorption, penetration and evaporation; on a solvent basis, the drying mainly comprising evaporation; oil-based, the drying comprising absorption and penetration; hot melt or
    BE2017 / 5886 phase change, wherein the ink is liquid at the ejection temperature but solid at room temperature and where drying is replaced by curing; and energy curable, wherein drying is replaced by polymerization induced by exposure of the ink to a radiation or thermal energy source.
    The first three types of ink compositions are more suitable for an absorbent receiving medium, while hot melt inks and energy-curable inks can also be printed on non-absorbent ink receivers. Due to the thermal requirements imposed by hot melt inks on the substrates, radiation-curable inks in particular have aroused the interest of the packaging industry.
    The inkjet printing on glass containers that require a CEC during production for the reasons mentioned above, such as bottles, has shown to be still difficult and result in poor image quality of the prints.
    As a result, there remains a need for optimized inkjet printing methods for glass containers that require a CEC, especially in high-speed processes, such as bottling lines for beverage.
    Summary of the invention
    The present invention is directed to a glass container with an outer glass surface with an inkjet printed image applied to said surface and comprising a CEC with a thickness between 0 and 20 nm, or no CEC present between the outer glass surface and the inkjet printed Pictures
    BE2017 / 5886 wherein the non-printed area of the outer glass surface comprises a friction-reducing coating.
    In addition, the present invention is directed to a method for inkjet printing an image on a glass container comprising the steps of:
    a) providing a glass container that has no CEC on its outer surface, or from which a CEC is at least partially removed to a level between 0 and 20 nm,
    b) inkjet printing of an image on a glass container, releasing an unprinted area
    c) depositing a friction-reducing coating on at least a portion of the non-printed area.
    Detailed description of the invention
    It is now recognized that the reason why inkjet printing on glass containers that require a CEC is still difficult and results in poor image quality of the prints is as follows:
    In the first place, it is assumed that, without being bound by theory, the CEC can influence the binding of inkjet inks and the adhesion to the glass surface.
    Secondly, because the containers are positioned in several rows after leaving the cooling oven, CEC is applied by a spray gun or guns that move in parallel between the respective rows of the containers, positioned above or flat between the rows at shoulder height of the
    BE2017 / 5886 containers. Such spray patterns automatically lead to a non-homogeneous distribution of coating material.
    Although WO2013167558 describes an improved method for applying a CEC integrated into the glass container production process, the method disclosed herein can only be performed in a single line conveyor configuration and not in a traditional and commonly used multi-row mass conveyor configuration.
    Thirdly, for good extrusion capacity and fast inkjet printing, the viscosity of the inkjet inks is typically much lower than, for example, in screen printing inks. Without wishing to be bound by theory, lower viscosity of the inkjet ink exhibits greater mobility on a surface to be printed and greater dependence on the homogeneity of the surface. The poor image quality of the prints can thus be a result of the high mobility of the lower-viscous inkjet inks prior to curing by, e.g., evaporation and / or polymerization, and the non-homogeneous distribution of CEC material as described above. I.e. the lower viscous and mobile inkjet ink drops tend to wet and move to the surface areas with a higher surface energy, resulting in printing defects.
    It was so unexpectedly established that by removing at least a portion of the CEC layer from the glass substrate to a level where the remaining CEC layer has a thickness of 0 to 20 nm, adhesion as well as print quality of the prints, e.g. color aberrations and resolution is significantly improved compared to
    BE2017 / 5886 print quality on a glass substrate from which the CEC was not at least partially removed. Without wishing to be bound by theory, the assumed reason for an improved print quality is that by removing at least a portion of the CEC layer to a level where the remaining CEC layer has a thickness of 0 to 20 nm, the homogeneity of the surface is increased and results in a reduced tendency of the mobile and low-viscous inkjet inks to move on the surface before being cured.
    In a first embodiment, the present invention provides a glass container with an outer glass surface with an ink-jet printed image disposed on said surface, characterized in that a CEC with a thickness between 0 and 20 nm is present between the outer glass surface and the ink-jet printed image. A thickness of 0 to 20 nm corresponds to a few monolayers or less. The thickness of the CEC is preferably between 0 and 10 nm, and more preferably between 0 and 5 nm.
    Furthermore, an embodiment may be provided in which an HEC may be present between the outer glass surface and the CEC or between the outer glass surface and the inkjet printed image. In the latter case, CEC is absent or removed and has a thickness of 0 nm or almost 0 nm.
    Without being bound by theory, the excellent print quality on substrates in which an HEC is present between the outer glass surface and the image printed by inkjet can be explained by the homogeneous distribution of the HEC because the HEC is usually
    BE2017 / 5886 is applied in vapor phase and on glass containers that are transported in one line, as explained above.
    The HEC typically comprises a metal oxide layer, typically a layer of 5 to 20 nm. More specifically, said metal oxide in the metal oxide layer can be selected from the group comprising: tin oxide, titanium oxide, zirconium oxide and / or combinations thereof, as described in US 3952118.
    In a specific embodiment of the present invention, the metal oxide layer of the HEC may be a tin oxide obtained from monobutyl tin chloride (MBTC) as a precursor.
    Typical examples of CECs applied to glass containers can be polyethylene, partially oxidized polyethylene, polyglycols, oleic acid or stearate-based coatings.
    In an embodiment of a glass container of the present invention, the CEC can be at least partially water-soluble between 20 and 90 ° C, preferably at 40 ° C. In addition to advantages in the production of inkjet printed glass containers, as will be explained further in this text, an at least partially water-soluble CEC can be advantageous for recycling disposable glass containers because it can be at least partially removed by rinsing with water between 20 and 90 ° C, preferably at 40 ° C.
    In the context of the present invention, the CEC that is at least partially water-soluble should be interpreted as a CEC that is at least partially removed by technical water,
    BE2017 / 5886 tap water, purified water or distilled water, so that the sliding angle of the bottle increases by at least 6 ° after washing compared to before washing. Sliding angles are determined by placing one bottle on top of two horizontal bottles of the same type, in line contact. The tilt angle is increased at a certain speed and the tilt angle at which the upper bottle starts to slip is called the sliding angle. A sliding angle can have a value of more than 30 ° to less than 10 °.
    More specifically, the at least partially water-soluble CEC may be based on fatty acid, preferably based on stearate. In another specific preferred embodiment, the at least partially water-soluble CEC may be based on polyethylene glycol.
    In another embodiment of a glass container of the present invention, the CEC may be at least partially oxidized by flame, corona, or plasma treatment. It is known in the art that organic screen printing inks do not adhere well to glass containers treated with CEC, and that flame, corona or plasma energy can be applied to the glass containers in order to better adhesion of an organic coating (e.g. inkjet ink) thereon.
    Furthermore, a glass container according to the present invention may comprise a silicon-containing layer, preferably a silicon-dioxide-containing layer (e.g. pyrosil), between the CEC and the ink-jet printed image. Such a silicon-containing
    BE2017 / 5886 layer provides improved binding sites for the ink jet printed layer (s). Furthermore, they can result in a rough nanoporous material surface for increased adhesion and a surface with a higher surface energy. It can, for example, be deposited by flame pyrolysis. Precursors can be supplied as a vapor, an atomized liquid, an atomized solution, and / or the like.
    A primer layer may be present between the outer glass surface and the inkjet printed image to improve adhesion of the ink, i.e., on the CEC or on the HEC, or on a silica-containing layer (e.g., pyrosil). Such a primer can be pigmented, white or transparent, and can include an adhesion promoter. Such a primer can also be oxidized by flame, corona, or plasma treatment to improve inkjet ink adhesion. A white pigmented primer, typically containing e.g. titanium dioxide, is preferably used to enhance the contrast and vividness of color inks printed on a primed substrate. This is especially effective when the substrate is transparent. More specifically, the primer may comprise a radical reactive group moiety such as a thiol group, an amine group, or an ethylenically unsaturated group such as a vinyl ether, a vinyl ester, an acrylamide, a methacrylamide, a styrile, or preferably an allyl, an acrylate, or a methacrylate .
    The inkjet printed image on a glass container according to the present invention can comprise one or more layers of ink, preferably by energy
    BE2017 / 5886 cured ink, ie the ink can be cured in any suitable way, for example radiation cured by any suitable type of radiation such as, for example, ultraviolet, electron beam, or the like, or thermally cured in a convection oven, infrared lamps, or such as, or a combination of both radiation and thermal energy.
    A protective layer and / or clear coating can be applied to the glass container printed by inkjet to protect the image and / or obtain a more glossy or matte impression (or other optical effect).
    The image printed by inkjet can have a print resolution of at least 300 dpi.
    A glass container according to the present invention can be a glass bottle, preferably a beverage bottle and most preferably a disposable bottle. A reusable glass container that after use is exposed to corrosive rinsing agents would no longer exhibit HEC after a limited number of rinses after recovery.
    Furthermore, a glass container according to the present invention can preferably be a cylindrical bottle.
    In a further embodiment of the present invention, a glass container can be provided with an outer glass surface with an inkjet printed image applied to said surface and comprising a CEC with a thickness between 0 and 20 nm present between the outer glass surface and the inkjet printed image, and where at least
    BE2017 / 5886 a portion of the non-printed area comprises a friction-reducing coating.
    In another embodiment of a glass container in which at least a portion of the non-printed area comprises a friction-reducing coating, no CEC can be present between the outer glass surface and the printed image. In this case, CEC is absent or almost completely removed and has a thickness of 0 nm or almost 0 nm.
    A friction-reducing coating provides increased scratch protection and improves the durability, appearance and internal bursting pressure of the glass container. Because, in order to qualitatively print on glass containers that had a CEC during process steps preceding the printing, the CEC has been completely removed, or at least up to a level between 0 and 20 nm, a glass container can be provided with a friction-reducing coating on at least at least a portion of the unprinted area retain its durability, appearance and an internal burst pressure of at least 7 bar, or at least 8 bar, or at least 9 bar.
    Such a glass container can have a sliding angle of 6 to 10, or even up to 20 degrees less compared to glass bottles that do not have a friction-reducing coating on at least a portion of the non-printed area.
    The friction-reducing coating can result from a water-based precursor. Said precursor can be similar to a CEC precursor.
    BE2017 / 5886
    The friction-reducing coating can also include silicone-based components such as polydimethylsiloxane.
    The friction-reducing coating can also include cross-linkable connections. An example of cross-linkable friction-reducing components are surface-active (meth) acrylated silicone. Preferred commercially available surfactant (meth) acrylated silicones include: Ebecryl ™ 350, a silicone diacrylate from Cytec; the polyether-modified acrylated polydimethylsiloxane BYK ™ UV3500 and BYKT ™ UV3530, the polyester-modified acrylated polydimethylsiloxane BYK ™ UV3570, all produced by BYK Chemie; Tego ™ Rad 2100, Tego ™ Rad 2200N, Tego ™ Rad 2250N, Tego ™ Rad 2300, Tego ™ Rad 2500, Tego ™ Rad 2600, and Tego ™ Rad 2700, Tego ™ RC711 from EVONIK; Silaplane ™ EM7711, Silaplane ™ EM7721, Silaplane ™ EM7731, Silaplane ™ EM0711, Silaplane ™ EM0721, Silaplane ™ EM0725, Silaplane ™ TM0701, Silaplane ™ TM0701T all produced by Chisso Corporation; and DMS-R05, DMS-R11, DMS-R18, DMS-R22, DMS-R31, DMS-U21, DBE-U22, SIB1400, RMS-044, RMS033, RMS-083, UMS-182, UMS-992, UCS -052, RTT-1011 and UTT1012 all produced by Gelest, Ine.
    The friction-reducing coating may alternatively comprise a colorless ink composition that comprises a friction-reducing compound.
    In a further embodiment, in addition to a friction-reducing coating on at least a portion of the non-printed area, the inkjet ink of the printed image can also comprise a friction-reducing connection.
    BE2017 / 5886
    In an additional aspect of the present invention, an embodiment is provided by a method for inkjet printing an image on a glass container comprising the steps of:
    a) producing a glass container comprising a CEC layer;
    b) removing at least a portion of the CEC layer to a level where the remaining CEC layer has a thickness of 0 to 20 nm;
    c) inkjet printing of an image on the glass container.
    Removing the CEC to a level where the remaining CEC has a thickness of 0 to 20 nm CEC is equivalent to a few monolayers or less. The thickness of the remaining CEC is preferably between 0 and 10 nm, and more preferably between 0 and 5 nm.
    In a preferred embodiment of the present invention, the CEC can be at least partially soluble in water and can be at least partially removed by rinsing with tap water, technical water, purified water or distilled water. Depending on the duration and temperature of the rinsing, the level of residual CEC can be varied or optimized from less than 20 nm to two or a monolayers, or to a level where only individual traces are left on the surface, or to complete removal.
    Techniques for removing a water-insoluble CEC can be chemical etching, sandblasting, dissolving in organic solvent, flame or plasma treatments, etc.
    BE2017 / 5886
    In a specific embodiment of a method of the present invention, rinsing of the CEC for at least partial removal from the glass container can be performed with technical water, tap water, purified water or distilled water at a temperature between 20 ° C and 90 ° C, preferably at 40 ° C. The playing time can vary between 0.1 and 15 seconds, or between 0.1 and 10 seconds, depending on the removal level of the CEC.
    After rinsing, the rinsed glass container can be dried by removing water, preferably in a substantially liquid phase, for example by blowing away the water droplets (e.g. by a fan, air vane, etc.) or by centrifuging the bottles.
    In a specific embodiment of the present invention, the CEC is removed to a level that increases the sliding angle of the glass bottle by at least 6 °, or at least 10 °, or even at least 20 °. Sliding angles are determined by placing one bottle on top of two horizontal bottles of the same type, in line contact. The tilt angle is increased at a certain speed and the tilt angle at which the upper bottle starts to slip is called the sliding angle. A sliding angle can have a value of more than 30 ° to less than 10 °.
    When the CEC is completely removed, the HEC can be the surface on which the image is printed by inkjet.
    Alternatively, in an embodiment according to a present invention, a method becomes
    BE2017 / 5886 provided for inkjet printing of an image on a glass container, wherein a primer layer is applied to the glass container after at least partial removal of the CEC and before inkjet printing of an image on the glass container. Such a primer can be pigmented, white or transparent, and can include an adhesion promoter. Such a primer can also be curable by energy so that the ink-jet ink can be irradiated on the wet primer, the ink-jet ink having a viscosity lower than the primer viscosity, and wherein the primer and the ink-jet ink can be cured simultaneously by means of energy. Such a primer can be pigmented, white or transparent, and can include an adhesion promoter. Such a primer can also be oxidized by flame, corona, or plasma treatment to improve inkjet ink adhesion. A white pigmented primer, typically containing e.g. titanium dioxide, is preferably used to enhance the contrast and vividness of color inks printed on a primed substrate. This is especially effective when the substrate is transparent. More specifically, the primer may have a radically reactive group moiety such as a thiol group, an amine group, or an ethylenically unsaturated group such as a vinyl ether, a vinyl ester, an acrylamide, a methacrylamide, a styrile, or preferably an allyl, an acrylate, or a methacrylate .
    The remaining CEC or, in the case of complete removal of CEC, the HEC from the primer layer can be at least partially oxidized by flame, corona
    BE2017 / 5886, or plasma treatment to enhance the adhesion of the inkjet ink to it.
    In a further embodiment of the present invention, after the flame, corona, or plasma treatment, a silicon-based, preferably silicon-based (e.g. pyrosil) layer may be applied to the glass container. This silicon-based layer can thus be applied to at least partially oxidized residual CEC, to at least partially oxidized HEC, or to an at least partially oxidized primer prior to inkjet printing of the image. Such a silicon-containing layer provides improved binding sites for the ink jet layer (s). Furthermore, they can result in a rough nanoporous material surface for increased adhesion and a surface with a higher surface energy. It can, for example, be deposited by flame pyrolysis. Precursors can be supplied as a vapor, an atomized liquid, an atomized solution, and / or the like.
    Thus, glass containers produced according to the method of the present invention are filled after inkjet printing of the image thereon to prevent damage to the inkjet printer by accidentally bursting the filled glass container.
    In the inkjet printing step, the inkjet printhead can scan back and forth in a longitudinal direction over the moving glass container, and the inkjet printhead cannot print on the way back. However, bidirectional printing can be
    BE2017 / 5886 and may be preferred for achieving a high area throughput on large glass containers. Another preferred printing method can also print in multiple passes but in a transverse direction (circularly around the bottle). In this method, the relative position of the bottle relative to the printhead can be changed after each pass to print images larger than the size of one printhead. This requires fixation of the printed artwork. Another variation on this method uses the relative movement of the bottles with respect to the print head while the different feedthroughs are printed: spiral printing is obtained over the bottle. In the latter case, fixation defects are less pronounced. Another preferred printing method can be a single-pass printing process that can be performed using wide inkjet printheads or multiple inkjet printheads that cover the full width of the image to be printed (stacked or connected to each other). In a single-pass printing process, the inkjet printheads usually remain stationary and the substrate surface is transported under the inkjet printheads.
    Ink-jet printing techniques as used in the present invention can be piezoelectric ink-jet printing, continuous-type ink-jet printing, and thermal, electrostatic, and acoustic drop-on-demand type.
    BE2017 / 5886
    A preferred blasting temperature is between 10 and 70 ° C, more preferably between 20 and 60 ° C, and most preferably between 25 and 45 ° C.
    Non-curing solvent or water-based inkjet inks can be used, but preferably energy-cured inkjet ink is used. Radiation curable inkjet ink can be cured by exposure to actinic irradiation and / or by electron beam curing. The radiation curing is preferably carried out by a general exposure to actinic radiation or by a general electron beam curing. Thermally curable inkjet ink can be cured by a convection oven, infrared lamps, or the like.
    The curing means can be arranged in combination with the printhead of the inkjet printer and move together with it so that the inkjet ink is exposed to hardening energy very shortly after ejection. In such an arrangement, it may be difficult to provide an energy source that is small enough to be connected to and move together with the printhead. Therefore, a statically fixed energy source can be used, e.g. a source of curing UV light, connected to the radiation source by means of flexible radiation-conducting means such as an optical fiber bundle or an internally reflecting flexible tube. Alternatively, the actinic irradiation can be applied from a fixed source to the printhead by an arrangement of mirrors including a mirror on the printhead.
    BE2017 / 5886
    The radiation source arranged not to move with the printhead may also be an elongated radiation source that extends across the ink layer (s) to be cured and borders on the transverse route of the printhead so that the following rows of images formed by the printhead are fed stepwise or continuously under that radiation source. The radiation source is preferably an ultraviolet radiation source, such as a high or low pressure mercury lamp which optionally contains ramp elements, a cold cathode tube, a black light, an ultraviolet LED, an ultraviolet laser or a flashing light.
    Furthermore, it is possible to cure the image printed by inkjet by, successively or simultaneously, two light sources of different wavelength or light intensity. For example, the first UV source may be chosen to be UV-A rich, e.g., a gallium-dipped lamp, or another lamp that is both UV-A and UV-B rich. The second UV source can then be rich in UV-C, more specifically in the range of 260 nm - 200 nm. The use of two UV sources has been found to provide advantages, e.g., a fast cure speed.
    To facilitate curing, the inkjet printer often comprises one or more oxygen depletion units. The oxygen depletion units place a blanket of nitrogen or other relatively inert gas (e.g., CO2), with controllable position and controllable inert gas concentration, to reduce the oxygen concentration in the curing environment. Oxygen indeed serves as a radical scavenger and removes all available radicals from the polymerization reaction. Residual oxygen levels
    BE2017 / 5886 are usually kept at 200 ppm, but are generally in the range of 200 ppm to 1200 ppm.
    In the context of the present invention, the image to be printed by inkjet can include any type of photo, logo, text, graphic art, coding (QR code, barcode) and the like.
    After printing, a coefficient of friction-reducing coating can be applied to the entire glass container.
    Alternatively and preferably, a method for inkjet printing an image on a glass container can be provided comprising the steps of:
    a) providing a glass container that has no CEC on its outer surface, or from which a CEC is at least partially removed to a level between 0 and 20 nm,
    b) inkjet printing of an image on a glass container, releasing an unprinted area
    c) depositing a friction-reducing coating on at least a portion of the non-printed area.
    A friction-reducing coating provides increased scratch protection and improves the durability, appearance and internal bursting pressure of the glass container. Because, in order to qualitatively print on glass containers that had a CEC during process steps that precede printing, the CEC has been completely removed, or at least up to a level between 0 and 20 nm, it is possible to apply a reducing coating on at least least
    BE2017 / 5886 a portion of the unprinted area, durability, appearance and internal bursting pressure of the glass container are retained.
    Because the unprinted area can typically be wetted by water-based solutions, the friction-reducing coating can preferably be applied from a water-based precursor. In addition, typically more hydrophobic inks than hydrophilic inks are typically used. As a result, a water-based precursor does not wet the inkjet printed imaging surface, but instead wet the HEC, or primer, or remaining CEC on at least a portion of the non-printed area.
    The friction-reducing coating precursor can be based on polyethylene, on polyglycol, on oleic acid or on stearate, on fatty acid, on fatty acid ester, or on oleic acid ester, and preferably based on partially oxidized polyethylene.
    The depositing step can use any conventionally used technique for depositing a friction-reducing coating on the surface of a glass container, such as, for example, by immersion or spraying.
    The depositing step may alternatively include printing the unprinted area with a clear ink composition that includes a friction-reducing coating.
    In a further embodiment of the present invention, the image can be printed with an ink composition that is a friction reducing
    BE2017 / 5886 connection. In that case, almost the entire outer surface is covered with a friction-reducing coating.
    权利要求:
    Claims (12)
    [1]
    Conclusions
    A method for inkjet printing an image on a glass container comprising the steps of:
    a) providing a glass container that has no CEC on its outer surface, or from which a CEC is at least partially removed to a level between 0 and 20 nm,
    b) inkjet printing of an image on a glass container, releasing an unprinted area
    c) depositing a friction-reducing coating on at least a portion of the non-printed area
    [2]
    2. - Method for inkjet printing an image on a glass container comprising the steps of:
    a) providing a glass container with a CEC completely removed
    b) inkjet printing of an image on a glass container, releasing an unprinted area
    c) depositing a friction-reducing coating on at least a portion of the non-printed area
    [3]
    Method according to claim 1 or 2, wherein the friction-reducing coating is applied from a water-based precursor.
    [4]
    A method according to claim 1 or 2, wherein the deposition means applying a friction-reducing coating precursor to the printed and non-printed areas
    BE2017 / 5886 and wherein the friction-reducing coating precursor is water-based and does not wet the printed area.
    [5]
    The method of claim 4, wherein the friction-reducing coating is sprayed on the outer glass surface.
    [6]
    The method of claim 1 or 2, wherein the step of removing the CEC comprises rinsing the glass container and blowing away the rinsing fluid.
    [7]
    A method according to any one of the preceding claims, wherein the friction-reducing coating is applied from a precursor based on polyethylene, on partially oxidized polyethylene, on polyglycol, on oleic acid or on stearate, on fatty acid, on fatty acid ester, or on oleic acid ester.
    [8]
    The method of claim 1 or 2, wherein the image is printed with an ink composition comprising a friction-reducing connection.
    [9]
    9. - Glass container comprising an outer glass surface with an inkjet printed image applied to said surface and comprising a CEC with a thickness between 0 to 20 nm, or no CEC present between the outer glass surface and the inkjet printed image, and wherein the non-printed area of the outer glass surface comprises a friction-reducing coating.
    [10]
    The glass container of claim 9, wherein no CEC is present between the outer glass surface and the printed image.
    BE2017 / 5886
    [11]
    11. Glass container according to claims 8 to 10, wherein the friction-reducing coating is based on polyethylene, on partially oxidized polyethylene, on polyglycol, on oleic acid or on stearate,
    5 on fatty acid, on fatty acid ester, or on oleic acid ester.
    [12]
    12. Glass container according to claim 11, wherein the friction-reducing coating is based on partially oxidized polyethylene.
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    BE1025835B1|2019-09-03|GLASS CONTAINER INCLUDING AN INKJET PRINTED IMAGE AND A METHOD OF PRODUCING IT
    EP3243806A1|2017-11-15|A glass container having an inkjet printed image and a method for the manufacturing thereof
    US20190048219A1|2019-02-14|Fusing agent including a tetraphenyldiamine-based dye
    同族专利:
    公开号 | 公开日
    BE1025835A1|2019-07-19|
    EP3330095A1|2018-06-06|
    WO2018100132A1|2018-06-07|
    AR110291A1|2019-03-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1471293A|1975-11-10|1977-04-21|United Glass Ltd|Coating metal oxide treated glass containers|
    EP2591917A1|2011-11-09|2013-05-15|Krones AG|Method and device for ink-jet printing on curved container surfaces|
    WO2013167558A1|2012-05-09|2013-11-14|Arkema Vlissingen B.V.|Improved method for applying a cold end coating integrated in glass container manufacturing process|
    US489816A|1893-01-10|Straightening-mach in e |
    US3952118A|1972-08-14|1976-04-20|Dart Industries Inc.|Method for hot-end coating of glass containers|
    AU642025B2|1990-06-13|1993-10-07|Advanced Glass Treatment Systems|Method for enhancing the strength of a glass container and strength enhanced glass container|
    JP2016088770A|2014-10-30|2016-05-23|石塚硝子株式会社|Coating agent for glass container surface treatment having improved ink coating adhesiveness and glass container using the same|
    法律状态:
    2019-10-17| FG| Patent granted|Effective date: 20190903 |
    优先权:
    申请号 | 申请日 | 专利标题
    EP16202018.4A|EP3330095A1|2016-12-02|2016-12-02|A glass container having an inkjet printed image and a method for the manufacturing thereof|
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