CN-122013539-A - Preparation method of high-light-transmittance semi-transparent noctilucent interlayer synthetic leather

Abstract

The invention discloses a preparation method of high-light-transmittance semi-transparent noctilucent interlayer synthetic leather, which comprises the steps of spreading surface layer slurry on release paper, drying to form a surface layer, performing emulsion pattern printing on the surface layer, drying to form an emulsion printing layer, spreading noctilucent layer slurry on the emulsion printing layer, drying to form a noctilucent layer, spreading primer connecting layer slurry on the noctilucent layer, drying to a semi-dry state to form a primer connecting layer, performing veneering compounding on the primer connecting layer and a high-low temperature film, and drying, stripping, cooling and rolling the compounded material to obtain the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather. The synthetic leather is designed through a sandwich structure and combines an in-film printing process, so that the perfect fusion of the pattern display with high light transmittance and full color in daytime and the uniform and durable noctilucent effect at night is realized, and the attractiveness, the identification and the scene applicability of the product are obviously improved.

Inventors

• LIN XIAOFANG
• Pan Xincui
• SU DEYE

Assignees

• 安安(中国)有限公司

Dates

Publication Date

20260512

Application Date

20260225

Claims (8)

1. 1. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized by comprising the following steps of: (1) Coating surface layer slurry on release paper in a scraping way, and drying to form a surface layer; (2) Printing a latex pattern on the surface layer, and drying to form a latex printing layer; (3) The emulsion printing layer is coated with luminous layer slurry in a scraping way, and a luminous layer is formed after drying, wherein the luminous layer slurry comprises the following components in parts by weight, 100 parts of first resin, 60+/-5 parts of DMF, 20+/-5 parts of butanone and 30+/-5 parts of luminous powder, and the viscosity of the luminous layer slurry is 2800+/-300 cps; (4) Spreading a backing material connecting layer slurry on the noctilucent layer, and baking to a semi-dry state to form a backing material connecting layer; (5) Carrying out veneering compounding on the semi-dry backing material connecting layer and the high-low temperature film; (6) And drying, stripping, cooling and rolling the compounded material to obtain the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather.
2. 2. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that the surface layer slurry comprises the following components in parts by weight: 100 parts of a first resin, DMF 60+ -5 parts, 20 Plus or minus 5 parts of butanone, Wherein the viscosity of the topcoat slurry is 2700.+ -.300 cps.
3. 3. The preparation method of the high-light-transmittance semi-transparent noctilucent sandwich synthetic leather is characterized in that the latex pattern is printed by adopting water-based latex ink through a latex flat-bed printer, the printing pattern format is TIF, and the printing is followed by drying, wherein the drying temperature is above 120 ℃.
4. 4. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that the backing material connecting layer slurry comprises the following components in parts by weight: 100 parts of a second resin, 10+ -2 Parts of DMF, 40+/-5 Parts of butanone, Wherein the viscosity of the primer bond coat slurry is 4500 + -500 cps.
5. 5. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that the thickness of the high-low temperature film is 0.4+/-0.05 mm.
6. 6. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that the high-low temperature film is a TPU film.
7. 7. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that the release paper is a high-brightness gloss plain release film.
8. 8. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather is characterized in that in the step (5), before the backing material connecting layer and the high-low temperature film are subjected to veneering compounding, the temperature of a laminating roller is raised to 150 ℃ in advance, the rotating speed of the laminating roller is controlled to be 2-3m/s, the high-low temperature film is arranged above the laminating roller, a release film coated with the backing material connecting coating is arranged below the laminating roller, the laminating compounding is carried out, and then the release film is put into a 10-meter and 90-DEG C oven, and is dried under the condition of 300 revolutions of air supply.

Description

Preparation method of high-light-transmittance semi-transparent noctilucent interlayer synthetic leather Technical Field The invention relates to the technical field of synthetic leather, in particular to a preparation method of high-light-transmittance semi-transparent noctilucent interlayer synthetic leather. Background As an important material widely applied to the fields of footwear, luggage, home furnishings, automobile interiors and the like, the development of synthetic leather increasingly tends to be functional, personalized and green. The traditional synthetic leather manufacturing technology faces a plurality of bottlenecks, especially in aspects of surface decoration and visual effect expansion. Firstly, in the visual expression level, the colors and patterns of the traditional synthetic leather are mainly realized through processes of roller coating, printing or film pasting, and the like, and the problems of unnatural color gradient, insufficient layering and stereoscopic impression of the patterns, limited design flexibility and the like exist. Although digital printing technology provides the possibility of personalizing the pattern, it is still a technical difficulty how to firmly bond the printed pattern to the synthetic leather substrate and maintain a long vivid color without sacrificing the flexible feel of the leather. Secondly, in the aspect of functional expansion, the noctilucent material provides possibility for adding night recognition and decoration effects to the synthetic leather. It is common practice to mix the noctilucent powder directly into the top resin. However, the method has obvious defects that firstly, the luminous powder particles can influence the transparency and the surface gloss of the surface layer, so that the visual effect is turbid and the texture is reduced, secondly, the luminous powder is exposed to the outermost layer, is directly subjected to friction and external environment, so that the luminous layer is easy to wear and fall off and has poor durability, thirdly, the fine and independent regulation and control of the luminous effect and the color pattern are difficult to realize, and the visual appearance is single. Therefore, developing a novel synthetic leather and a preparation method thereof, which can simultaneously realize high light transmittance, semi-transparent visual effect, lasting noctilucent function and excellent durability, and which has environment-friendly production flow and supports rapid customization of personalized patterns, becomes a technical problem to be solved in the art. The method not only improves the added value and the attractive degree of the synthetic leather product, but also promotes the synthetic leather industry to upgrade to the green, digital and high-performance directions. Disclosure of Invention Aiming at the defects of the prior art, the invention provides the preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather, which realizes perfect fusion of pattern display with high light transmittance and full color in daytime and uniform and durable noctilucent effect at night by combining an in-film printing process through the design of the interlayer structure of the synthetic leather, and remarkably improves the attractiveness, the identification degree and the scene applicability of the product. The preparation method of the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather comprises the following steps of: (1) Coating surface layer slurry on release paper in a scraping way, and drying to form a surface layer; (2) Printing a latex pattern on the surface layer, and drying to form a latex printing layer; (3) The emulsion printing layer is coated with luminous layer slurry in a scraping way, and a luminous layer is formed after drying, wherein the luminous layer slurry comprises the following components in parts by weight, 100 parts of first resin, 60+/-5 parts of DMF, 20+/-5 parts of butanone and 30+/-5 parts of luminous powder, and the viscosity of the luminous layer slurry is 2800+/-300 cps; (4) Spreading a backing material connecting layer slurry on the noctilucent layer, and baking to a semi-dry state to form a backing material connecting layer; (5) Carrying out veneering compounding on the semi-dry backing material connecting layer and the high-low temperature film; (6) And drying, stripping, cooling and rolling the compounded material to obtain the high-light-transmittance semi-transparent noctilucent interlayer synthetic leather. Further, the surface layer slurry comprises the following components, by weight, 100 parts of a first resin, 60+ -5 parts of DMF and 20+ -5 parts of butanone, wherein the viscosity of the surface layer slurry is 2700+ -300 cps. Further, the emulsion pattern is printed by adopting aqueous emulsion ink through an emulsion flat-bed printer, the printing pattern format is TIF, and the emulsion patt