CN114341426A - Skin material for automobile interior and method for producing same - Google Patents

Skin material for automobile interior and method for producing same Download PDF

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Publication number
CN114341426A
CN114341426A CN201980098377.6A CN201980098377A CN114341426A CN 114341426 A CN114341426 A CN 114341426A CN 201980098377 A CN201980098377 A CN 201980098377A CN 114341426 A CN114341426 A CN 114341426A
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China
Prior art keywords
skin material
additive
mass
concentration
water
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Pending
Application number
CN201980098377.6A
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Chinese (zh)
Inventor
冯力
佘飞
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Freudenberg and Vilene Nonwovens Suzhou Co Ltd
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Freudenberg and Vilene Nonwovens Suzhou Co Ltd
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Publication of CN114341426A publication Critical patent/CN114341426A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
    • D06P1/48—Derivatives of carbohydrates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
    • D06P1/48—Derivatives of carbohydrates
    • D06P1/50—Derivatives of cellulose
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/002—Locally enhancing dye affinity of a textile material by chemical means
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02—After-treatment
    • D06P5/04—After-treatment with organic compounds
    • D06P5/08—After-treatment with organic compounds macromolecular
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2005—Treatments with alpha, beta, gamma or other rays, e.g. stimulated rays
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/30—Ink jet printing

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a skin material of an automobile interior and a manufacturing method thereof. The skin material includes: a non-woven base fabric; the adhesive containing the additive is coated on the surface of the non-woven base fabric; a digital print design comprising a pigmented ink on the binder; and a protective coating applied over the digital print design, wherein the additive is to prevent diffusion of the pigment ink. The skin material can prevent the diffusion and permeation of pigment ink, and the design of the pattern can be more flexible.

Description

Skin material for automobile interior and method for producing same
Technical Field
The invention relates to the field of automobile decoration, in particular to a skin material of automobile interior decoration and a manufacturing method thereof.
Background
In some existing solutions, a skin material for an automobile interior is manufactured by a screen printing process using a pattern formed of ink. However, screen printing is not flexible enough for design changes and has large slot sizes and technical limitations for advanced pattern designs. In other conventional proposals, a skin material for an automobile interior is produced by forming a pattern using Ultraviolet (UV) ink, and is irradiated with an Ultraviolet irradiation lamp.
Disclosure of Invention
An embodiment of the present invention provides a skin material for an automobile interior, including: a non-woven base fabric; the adhesive containing the additive is coated on the surface of the non-woven base fabric; a digital print design comprising a pigmented ink on the binder; and a protective coating applied over the digital print design, wherein the additive is to prevent diffusion of the pigment ink.
In some embodiments, the adhesive may include a resin.
In some embodiments, the binder may further include a foaming agent, a pH adjuster, and water.
In some embodiments, the additive may include sodium alginate.
In some embodiments, the additive may further include at least one of urea and sodium carboxymethyl cellulose.
In some embodiments, the binder may include a resin, a pH adjuster, and water, the additive includes sodium alginate, urea, and sodium carboxymethyl cellulose, the mass concentration of the resin is 5% to 30%, the mass concentration of the sodium alginate is 5% to 25%, the mass concentration of the water is 30% to 80%, the mass concentration of the urea is 3% to 8%, the mass concentration of the sodium carboxymethyl cellulose is 1% to 5%, and the mass concentration of the pH adjuster is 1% to 5%.
In some embodiments, the pigment ink may include a pigment, water, a resin, a glue, and a pH adjuster.
In some embodiments, the pigment is 0.1 to 5% by mass, the water is 50 to 90% by mass, the resin is 5 to 30% by mass, the glue is 3 to 15% by mass, and the pH adjuster is 1 to 5% by mass.
In some embodiments, the protective coating may include a resin, water, glue, and a pH adjuster.
In some embodiments, the mass concentration of the water is 50% to 90%, the mass concentration of the resin is 5% to 30%, the mass concentration of the glue is 3% to 15%, and the mass concentration of the pH regulator is 1% to 5%.
In some embodiments, the skin material may further include a water-collecting film coated on the protective coating.
In some embodiments, the water-collecting membrane may include a fluorocarbon.
In some embodiments, the skin material may be applied to a headliner, door side, pillar trim, and/or rear packaging of an automobile.
An embodiment of the present invention also provides a method for manufacturing a skin material for an automobile interior, including: providing a non-woven base fabric; pretreating the non-woven base fabric, wherein the pretreatment comprises the step of coating a binder and an additive on the surface of the non-woven base fabric; forming a digital printed design on the binder and additive, the digital printed design comprising pigment ink; and applying a protective coating over the digital printed design, wherein the additive is to prevent diffusion of the pigment ink.
In some embodiments, the binder and additives may be applied in the form of a foam.
In some embodiments, the pre-treating the non-woven fabric substrate may include: and simultaneously coating the adhesive and the additive on the surface of the non-woven base fabric.
In some embodiments, the pre-treating the non-woven fabric substrate may include: coating an adhesive on the surface of the non-woven base fabric; and coating the additive on the adhesive.
In some embodiments, the method may further comprise: a water-collecting film is formed on the protective coating by spraying.
In some embodiments, the additive may include sodium alginate.
In some embodiments, the additive may further include at least one of urea and sodium carboxymethyl cellulose.
Drawings
The foregoing and other features of the present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Understanding that these drawings depict only several embodiments in accordance with the invention and are not therefore to be considered to be limiting of its scope, the invention may be described with additional specificity and detail through use of additional features beyond those shown.
Fig. 1 is a schematic structural view of a skin material for an automotive interior according to an embodiment of the present invention; and
fig. 2 is a flowchart of a method for manufacturing a skin material for an automotive interior according to an embodiment of the present invention.
Detailed Description
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals generally identify like parts, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present invention, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this invention.
In some existing solutions, a skin material for an automobile interior is manufactured by a screen printing process using a pattern formed of ink. However, screen printing is not flexible enough for design changes and has large slot sizes and technical limitations for advanced pattern designs. In other conventional proposals, a skin material for an automobile interior is produced using a pattern formed by Ultraviolet (UV) ink, and is irradiated with an ultraviolet irradiation lamp.
The embodiment of the invention provides a novel skin material of an automobile interior, which adopts pigment ink and a digital printing process.
Fig. 1 is a schematic structural view of a skin material 100 for an automotive interior according to an embodiment of the present invention.
Referring to fig. 1, the skin material 100 for automotive interiors includes: a nonwoven fabric substrate 101, a binder 103 containing additives, a digitally printed design 105, and a protective coating 107. The skin material 100 may be applied to a car roof, a door side, pillar trim, and/or a rear package.
In an embodiment of the present invention, the digital printed design 105 includes pigmented ink. The pigment ink has good water resistance, light resistance and corrosion resistance.
In some embodiments, the adhesive 103 is applied to a surface of the non-woven fabric substrate 101, for example, an upper surface of the non-woven fabric substrate 101, to enhance adhesion between the non-woven fabric substrate 101 and the digitally printed design 105.
In some embodiments, the adhesive 103 may include a resin. In some embodiments, the resin may include an acrylic resin, a polyurethane resin, or a mixture. The resin may improve physicochemical properties, such as abrasion resistance, weather resistance, or chemical resistance, of the surface of the non-woven fabric base 101 to improve the quality of the skin material 100.
In some embodiments, the binder may further include a pH adjuster and water. The pH adjuster makes the binder 103 weakly alkaline, thereby being more easily bonded to the fibers of the non-woven fabric substrate 101. In some embodiments, the adhesive 103 further comprises a foaming agent. The foaming process facilitates the adhesive 103 to be uniformly coated on the non-woven fabric base 101.
The additive is included in the binder 103 in order to prevent pigment ink in the digital printed design 105 from spreading. In some embodiments, the additive comprises sodium alginate. Based on sodium alginate, capillary action is generated between fibers in the non-woven fabric base cloth 101. Sodium alginate allows the pigmented ink contained in the digital printed design 105 to be uniformly distributed on the non-woven base fabric 101 and prevents diffusion and penetration of the pigmented ink. Therefore, the tinting strength and the degree of color of the digital print can be improved, and the color of the pattern and the smoothness of the outline of the pattern in the digital print design 105 can be enhanced, thereby ensuring that the digital print design 105 has good quality.
In some embodiments, the additive further comprises at least one of urea and sodium carboxymethyl cellulose. The urea and the sodium carboxymethyl cellulose may further prevent the diffusion of the pigment ink and improve the wear resistance and weather resistance of the surface of the non-woven fabric substrate 101.
In some embodiments, the mass concentration of the resin is 5% to 30%, the mass concentration of the sodium alginate is 5% to 25%, the mass concentration of the water is 30% to 80%, the mass concentration of the urea is 3% to 8%, the mass concentration of the sodium carboxymethyl cellulose is 1% to 5%, the mass concentration of the pH adjuster is 1% to 5%, and the mass concentration of the foaming agent is 1% to 5%.
In some embodiments, the mass concentration of the resin is 15%, the mass concentration of the sodium alginate is 10%, the mass concentration of the water is 60%, the mass concentration of the urea is 5%, the mass concentration of the sodium carboxymethyl cellulose is 2%, the mass concentration of the pH adjuster is 3%, and the mass concentration of the foaming agent is 2%.
In some embodiments, the digitally printed design 105 includes the pigmented ink and a pattern on a binder containing the additive 103.
In some embodiments, the pigment ink may include a pigment, water, a resin, a glue, and a pH adjuster. The pigment is selected based on the actual color requirements of the skin material 100. The resin can improve the physicochemical properties of the digital printed design 105, such as abrasion resistance, weatherability, or chemical resistance. The glue is used to ensure that the nozzle drops have the proper shape and jetting speed during the digital printing process that forms the digital printed design 105, resulting in better print quality. The pH regulator makes the pigment ink weakly alkaline, prevents the pigment ink from hydrolyzing, and reduces corrosion to the nozzle.
In some embodiments, the amount of glue in the pigment ink is important to the characteristics of the digital printed design 105. On the one hand, the glue content in the pigment ink cannot be too high. Compared with the existing screen printing technology, the glue in the embodiment of the invention has lower content, so that the nozzle blockage in the digital printing process is prevented. On the other hand, the glue content in the pigment ink cannot be too low. If the amount of the glue in the pigment ink is too small, the adhesion of the pigment ink may be weak, and accordingly, the abrasion resistance and light resistance of the digital printed pattern 105 may be poor, which may easily cause discoloration of the skin material.
In some embodiments, the pigment is 0.1 to 5% by mass, the water is 50 to 90% by mass, the resin is 5 to 30% by mass, the glue is 3 to 15% by mass, and the pH adjuster is 1 to 5% by mass. This configuration can enhance the bonding between the digitally printed pattern 105 and the surface of the nonwoven fabric substrate 101, improve the abrasion, weather and chemical resistance of the skin material, and reduce the erosion of the nozzles and ink delivery system by the ink during the digital printing process.
In some embodiments, the pigment is at a mass concentration of 2%, the water is at a mass concentration of 70%, the resin is at a mass concentration of 20%, the glue is at a mass concentration of 5%, and the pH adjuster is at a mass concentration of 3%.
The protective coating 107 applied over the digitally printed pattern 105 serves to protect the digitally printed design 105 from damage. In some embodiments, the protective coating 107 includes a resin, water, glue, and a pH adjuster. The resin can improve the physicochemical properties of the surface of the digitally printed design 105, such as abrasion resistance, weatherability, or chemical resistance. The pH adjuster makes the protective coating 107 weakly basic, facilitating adhesion between the protective coating 107, the digitally printed design 105, the additive-containing binder 103, and the nonwoven substrate 101. The glue is used to ensure that there is a proper paste output during the rotary screen printing process that forms the protective coating 107.
In some embodiments, for the protective coating 107, the water is present at a concentration of 50% to 90% by mass, the resin is present at a concentration of 5% to 30% by mass, the glue is present at a concentration of 3% to 15% by mass, and the pH adjuster is present at a concentration of 1% to 5% by mass.
In some embodiments, the skin material may also include a water-collecting film coated on the protective coating 107 to enhance the water and stain resistance of the skin material. In some embodiments, the water-collecting thin film comprises a fluorocarbon.
As can be seen from the above, applying the additive to the surface of the non-woven fabric base cloth together with the binder can prevent the diffusion and penetration of the pigment ink. Therefore, the tinting strength and the tinting rate of the digital printing are improved, the color of the pattern and the smoothness of the pattern outline in the digital printing design are enhanced, and the digital printing design has good quality.
Further, the protective coating can prevent the digital printing design from being damaged, and the physical and chemical properties of the digital printing design are further improved.
Further, the conventional screen printing is replaced by a digital printing process, so that the design change is more flexible and convenience is provided for advanced pattern design.
An embodiment of the present invention also provides the use of any of the above skin materials as a headliner facing material, pillar facing material, door facing material, rear package and/or cargo wind deflector.
Fig. 2 is a flowchart of a method 200 for manufacturing a skin material of an automotive interior according to an embodiment of the present invention.
Referring to fig. 2, in step S201, a non-woven fabric base fabric is provided.
In some embodiments, the nonwoven fibers are subjected to a needling process to form the nonwoven fabric substrate.
In some embodiments, the needling process employs several knitting machines. For example, four knitting machines may be used.
In step S203, the non-woven fabric substrate is subjected to a pretreatment including coating a surface of the non-woven fabric substrate with a binder and an additive.
In some embodiments, the adhesive and additives may be applied in the form of a foam.
In some embodiments, pretreating the nonwoven fabric substrate comprises: and simultaneously coating the adhesive and the additive on the surface of the non-woven base fabric.
In some embodiments, pretreating the nonwoven fabric substrate comprises: coating adhesive cement on the surface of the non-woven fabric base cloth; and drying the adhesive cement by using a drying cylinder so as to form the adhesive and the additive on the non-woven base fabric. The drying temperature may be 130 ℃ to 180 ℃ and the speed of the drying cylinder may be 5m/min to 20 m/min.
In some embodiments, pretreating the nonwoven fabric substrate comprises: coating an adhesive on the surface of the non-woven base fabric; and coating the additive on the adhesive.
In some embodiments, the adhesive may include a resin. In some embodiments, the resin may include an acrylic resin, a polyurethane resin, or a mixture. The resin may improve physicochemical properties, such as abrasion resistance, weather resistance, or chemical resistance, of the surface of the nonwoven fabric substrate to improve the quality of the skin material. In some embodiments, the binder may further include a pH adjuster and water. The pH regulator makes the binder weakly alkaline, thereby being more easily bonded with the fibers of the non-woven fabric substrate. In some embodiments, the adhesive further comprises a foaming agent.
To prevent pigment ink diffusion in the digital print design, the additive is also applied. In some embodiments, the additive comprises sodium alginate. Based on sodium alginate, capillary action is generated among fibers in the non-woven base fabric. Sodium alginate allows the pigment ink contained in the digital printing design to be uniformly distributed on the non-woven fabric base cloth and prevents the pigment ink from diffusing and permeating. Therefore, the coloring strength and the coloring rate of the digital printing can be improved, and the color of the pattern and the smoothness of the pattern outline in the digital printing design are enhanced, so that the digital printing design is ensured to have good quality.
In some embodiments, the additive further comprises at least one of urea and sodium carboxymethyl cellulose. The urea and the sodium carboxymethyl cellulose can further prevent the pigment ink from diffusing and improve the wear resistance and weather resistance of the surface of the non-woven fabric base cloth.
In some embodiments, the mass concentration of the resin is 5% to 30%, the mass concentration of the sodium alginate is 5% to 25%, the mass concentration of the water is 30% to 80%, the mass concentration of the urea is 3% to 8%, the mass concentration of the sodium carboxymethyl cellulose is 1% to 5%, the mass concentration of the pH adjuster is 1% to 5%, and the mass concentration of the foaming agent is 1% to 5%.
In some embodiments, the mass concentration of the resin is 15%, the mass concentration of the sodium alginate is 10%, the mass concentration of the water is 60%, the mass concentration of the urea is 5%, the mass concentration of the sodium carboxymethyl cellulose is 2%, the mass concentration of the pH adjuster is 3%, and the mass concentration of the foaming agent is 2%.
In step S205, a digital print design is formed on the binder and additives.
In some embodiments, the digital printed design includes the pigmented ink and a pattern on the binder and additive.
In some embodiments, the pigment ink may include a pigment, water, a resin, a glue, and a pH adjuster. The pigment is selected based on the actual color requirements of the skin material. The resin can improve the physicochemical properties of the digital print design, such as abrasion resistance, weatherability, or chemical resistance. The glue is used to ensure that the nozzle drops have the proper shape and jet speed in the digital printing process that forms the digital printed design, resulting in better print quality. The pH regulator makes the pigment ink weakly alkaline, prevents the pigment ink from hydrolyzing, and reduces corrosion to the nozzle.
In some embodiments, the pigment is 0.1 to 5% by mass, the water is 50 to 90% by mass, the resin is 5 to 30% by mass, the glue is 3 to 15% by mass, and the pH adjuster is 1 to 5% by mass. This configuration can enhance the bonding between the digitally printed pattern and the surface of the non-woven base fabric, improve the wear, weather and chemical resistance of the skin material, and reduce the erosion of the nozzles and ink delivery system by the ink in the digital printing process.
In some embodiments, the pigment is at a mass concentration of 2%, the water is at a mass concentration of 70%, the resin is at a mass concentration of 20%, the glue is at a mass concentration of 5%, and the pH adjuster is at a mass concentration of 3%.
The digital printing process comprises an injection process. Specifically, high-frequency mechanical force or electromagnetic thermal shock is applied to the pigment ink in the nozzle, thereby causing smaller droplets of the pigment ink to be ejected from the nozzle. The droplets may realize a specified pattern under the control of a computer system. In some embodiments, the application frequency may be 5000 to 20000 times/second, the number of droplets ejected from the nozzle per second may be 5000 to 20000, and the volume of each droplet may be 50 to 500 pL.
As mentioned in the background, some existing solutions employ UV inks to form the skin material of automotive interiors. In order to dry the UV ink, a UV irradiation lamp is required to irradiate the UV ink. In an embodiment of the present invention, the pigment ink including the resin may be dried through a thermal curing process without using a UV irradiation lamp.
The embodiment of the invention adopts a digital printing process, so that the design change is more flexible, and convenience is provided for advanced pattern design.
In step S207, a protective coating is applied over the digital print design.
The protective coating is used to prevent the digital print design from being damaged. In some embodiments, the protective coating may be applied using a rotary screen printing process or by spraying.
In some embodiments, the protective coating includes a resin, water, glue, and a pH adjuster. The resin can improve the physicochemical properties of the digitally printed design surface, such as abrasion resistance, weatherability, or chemical resistance. The pH regulator makes the protective coating weakly alkaline, which is favorable for the adhesive force among the protective coating, the digital printing design, the adhesive, the additive and the non-woven base fabric. The glue is used to ensure that there is proper paste output in the rotary screen printing process.
In some embodiments, for the protective coating, the water is at a concentration of 50% to 90% by mass, the resin is at a concentration of 5% to 30% by mass, the glue is at a concentration of 3% to 15% by mass, and the pH adjuster is at a concentration of 1% to 5% by mass.
In some embodiments, the method may further comprise: a water-collecting film is formed on the protective coating by spraying. The water collecting film is used to enhance the water resistance and contamination resistance of the skin material. In some embodiments, the water-collecting thin film comprises a fluorocarbon.
In some embodiments, the method may further comprise: after the water-collecting film is formed, the entire nonwoven fabric base fabric, binder and additive, digital print design, protective coating, and water-collecting film are dried using an oven. In the drying process, the temperature inside the oven may be 120 ℃ to 180 ℃, and the speed of the oven may be 10m/min to 30 m/min.
The drying process after the formation of the water-collecting film may take away Volatile Organic Compounds (VOCs) to reduce the content of VOCs, thereby increasing the odor level of the skin material.
Based on the above process, the skin material for automobile interior can be formed.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Claims (20)

1. A skin material for automotive interior, characterized by comprising:
a non-woven base fabric;
the adhesive containing the additive is coated on the surface of the non-woven base fabric;
a digital print design comprising a pigmented ink on the binder; and
a protective coating applied to the digital print design,
wherein the additive is used to prevent diffusion of the pigment ink.
2. A skin material according to claim 1, wherein the binder comprises a resin.
3. A skin material according to claim 2, wherein the binder further comprises a foaming agent, a pH adjuster and water.
4. A skin material as defined in claim 2, wherein the additive includes sodium alginate.
5. A skin material according to claim 4, wherein the additive further comprises at least one of urea and sodium carboxymethyl cellulose.
6. A skin material according to claim 1, wherein the binder comprises a resin, a pH adjuster, and water, the additive comprises sodium alginate, urea, and sodium carboxymethyl cellulose, the mass concentration of the resin is 5% to 30%, the mass concentration of the sodium alginate is 5% to 25%, the mass concentration of the water is 30% to 80%, the mass concentration of the urea is 3% to 8%, the mass concentration of the sodium carboxymethyl cellulose is 1% to 5%, and the mass concentration of the pH adjuster is 1% to 5%.
7. A skin material according to claim 1, wherein the pigment ink comprises a pigment, water, a resin, a glue, and a pH adjuster.
8. A skin material according to claim 7, wherein the pigment is present at a concentration of 0.1 to 5% by mass, the water is present at a concentration of 50 to 90% by mass, the resin is present at a concentration of 5 to 30% by mass, the glue is present at a concentration of 3 to 15% by mass, and the pH adjuster is present at a concentration of 1 to 5% by mass.
9. A skin material according to claim 1, wherein the protective coating comprises a resin, water, glue, and a pH adjuster.
10. A skin material according to claim 9, wherein the water is present at a concentration of 50 to 90% by mass, the resin is present at a concentration of 5 to 30% by mass, the glue is present at a concentration of 3 to 15% by mass, and the pH adjuster is present at a concentration of 1 to 5% by mass.
11. A skin material as set forth in claim 1 further comprising a water-collecting film applied over said protective coating.
12. A skin material as defined in claim 11, wherein said water-collecting film comprises a fluorocarbon compound.
13. A skin material according to any one of claims 1 to 12, wherein the skin material is applied to a ceiling, a door side, a pillar trim and/or a rear package of an automobile.
14. A method for manufacturing a skin material for an automobile interior, comprising:
providing a non-woven base fabric;
pretreating the non-woven base fabric, wherein the pretreatment comprises the step of coating a binder and an additive on the surface of the non-woven base fabric;
forming a digital printed design on the binder and additive, the digital printed design comprising pigment ink; and
a protective coating is applied over the digital print design,
wherein the additive is used to prevent diffusion of the pigment ink.
15. The method of manufacture of claim 14, wherein the adhesive and additive are applied in the form of a foam.
16. The method of manufacturing of claim 14, wherein the pre-treating the nonwoven fabric substrate comprises:
and simultaneously coating the adhesive and the additive on the surface of the non-woven base fabric.
17. The method of manufacturing of claim 14, wherein the pre-treating the nonwoven fabric substrate comprises:
coating an adhesive on the surface of the non-woven base fabric; and
coating the additive on the adhesive.
18. The method of manufacturing of claim 14, further comprising: a water-collecting film is formed on the protective coating by spraying.
19. The method of claim 14, wherein the additive comprises sodium alginate.
20. The method of manufacturing of claim 19, wherein the additive further comprises at least one of urea and sodium carboxymethyl cellulose.
CN201980098377.6A 2019-07-12 2019-07-12 Skin material for automobile interior and method for producing same Pending CN114341426A (en)

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