Weather-resistant PVC decorative film

A decorative film and weather-resistant technology, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of severe discoloration, decorative film without any process, deterioration of living environment or working environment, etc., to achieve The effect of excellent gloss and acid and alkali resistance, excellent pollution resistance, and excellent storage stability

Active Publication Date: 2022-07-08
江苏万拓新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ordinary high-gloss decorative film is generally composed of one or two layers of PVC base film and high-gloss middle layer or glazing film, which are thermally compounded by a laminating machine under high temperature conditions; Defects with low gloss and poor weather resistance, the weather resistance test usually shows that the color will change very badly if it is less than 60 hours
The current PVC decorative film printing mostly uses PVC solvent-based inks. Solvent-based inks include benzene-based, ketone-based, ester-based, alcohol-based, etc., which contain a large amount of volatile organic compounds. The organic solvent contained in the gravure ink composition is used in printing inks. It may be released to the external environment during the drying process, causing air pollution, eye or skin discomfort, deterioration of the living environment or working environment, and the risk of fire, etc.

Method used

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Examples

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preparation example Construction

[0043] The invention also discloses a preparation method of a weather-resistant PVC decorative film, the steps of which include:

[0044] Provide PVC base material, and perform high-voltage corona treatment on the surface of PVC base material;

[0045] Provide water-based ink; use the gravure printing method to print the weather-resistant water-based ink on the surface of the PVC bottom substrate to form a water-based ink printing layer;

[0046] Provide a PVDF / PMMA co-extrusion layer, and press the PVDF / PMMA co-extrusion layer on the surface of the water-based ink printing layer through a laminating machine to form PVDF / PMMA.

[0047] Further, in some embodiments of the present invention, the treatment conditions of the high-voltage corona are as follows: the voltage is 7-10 kV, the current is 1.2-2.5 mA, and the vehicle speed is 120-170 m / min.

[0048] Further, in some embodiments of the present invention, the rotational speed of the gravure printing plate in the gravure pr...

Embodiment 1

[0052] The preparation method of acrylic resin is:

[0053] According to the weight ratio of 1:0.6, the emulsifier (the weight ratio of lauryl alcohol polyoxyethylene ether and sodium lauryl sulfate is 1:2) and deionized water are prepared under the condition of magnetic stirring to obtain the emulsion; the weight ratio is 4:3:1 methyl methacrylate, hydroxyethyl acrylate and styrene monomers were added to the above-mentioned emulsion, wherein the emulsifier was 3.5% of the total monomer weight, and stirred for 40min at 800r / min rotating speed to obtain Emulsion a;

[0054] Mix 30wt% of the emulsion a, 0.15% of the total monomer weight of the buffer and 3 times the total monomer weight of deionized water, add 0.35% of the total monomer weight of ammonium persulfide, and stir and mix at 800r / min. 15min to obtain the emulsion b, then add the remaining 70wt% of the emulsion a and 0.35% of the total monomer weight of ammonium persulfide, heat up to 75 ° C and stir the reaction, ke...

Embodiment 2

[0056] The preparation method of modified acrylic resin is:

[0057] According to the weight ratio of 1:0.6, the emulsifier (the weight ratio of lauryl alcohol polyoxyethylene ether and sodium lauryl sulfate is 1:2) and deionized water are prepared under the condition of magnetic stirring to obtain the emulsion; the weight ratio is 4:3:1 methyl methacrylate, hydroxyethyl acrylate and styrene monomers were added to the above-mentioned emulsion, wherein the emulsifier was 3.5% of the total monomer weight, and stirred for 40min at 800r / min rotating speed to obtain Emulsion a;

[0058] Mix 30wt% of the emulsion a, 0.15% of the total monomer weight of the buffer and 3 times the total monomer weight of deionized water, add 0.35% of the total monomer weight of ammonium persulfide, and stir and mix at 800r / min. 15min to obtain the emulsion b, then add the remaining 70wt% of the emulsion a, 4.5% of the total weight of the modified organosilicon and 0.45% of the total weight of the mon...

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Abstract

The invention discloses a weather-resistant PVC (polyvinyl chloride) decorative film. Relates to a PVC decorative film. The high-weather-resistant PVC/PMMA composite board comprises a high-weather-resistant PVC bottom layer, a high-weather-resistant printing middle layer and a high-weather-resistant PVDF/PMMA surface layer, printing weather-resistant water-based ink on the upper surface of the high-weather-resistant PVC bottom layer to form a high-weather-resistant printing middle layer; the PVDF/PMMA surface layer is attached to the upper surface of the high-weather-resistance printing middle layer in a pressed mode; wherein the weather-resistant water-based ink comprises modified acrylic resin; the modified acrylic resin is propionic acid resin modified by modified organic silicon; the modified organic silicon is prepared from chloromethyl triisopropoxy silane and 1-amino-2-ethylene cyclopropane carboxylic acid methyl ester; the prepared water-based ink is good in storage stability, high in film forming speed and good in adhesion fastness and has excellent glossiness and acid and alkali resistance, and the prepared PVC decorative film is high in weather resistance and also has excellent pollution resistance.

Description

technical field [0001] The invention relates to a PVC decorative film, in particular to a weather-resistant PVC decorative film. Background technique [0002] PVC decorative film is a widely used surface decoration material. First, print on soft PVC, which can have various patterns and embossing. On the hydraulic laminating machine, heat the completely dried PVC printing surface and a layer of PVC transparent film, and the PVC non-printing surface and a decorative substrate by heating Pressure fit. Existing ordinary high-gloss decorative films are generally made of PVC base film and one or two layers of high-gloss middle layer or glazing sheet by laminating machine under high temperature conditions; For defects with low gloss and poor weather resistance, the weather resistance test is usually less than 60 hours, and the color will be greatly changed. At present, PVC solvent-based inks are mostly used in PVC decorative film printing. Solvent-based inks include benzene seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30
CPCB32B27/304B32B27/308B32B27/08B32B33/00B32B21/02B32B21/00B32B21/08B32B13/00B32B13/12B32B19/08B32B19/045B32B15/00B32B15/082B32B15/20C09D11/107C09D11/03B32B2250/24B32B2255/10B32B2255/26B32B2307/406B32B2307/714B32B2307/712B32B2451/00Y02E10/50
Inventor 崔华崔炜晔朱友华荣夕龙周锦锋
Owner 江苏万拓新材料科技有限公司
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