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Pattern roller for release paper and preparation method thereof

A patterned roller and release paper technology, which is applied in the field of artificial leather processing, can solve the problems of unqualified release paper technology for artificial leather, dependence on imports, and difficult market needs.

Inactive Publication Date: 2013-09-11
ZHEJIANG RONGCHENG ROLL SHAFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After years of research and development, the technology of release paper for artificial leather in my country is still not up to standard, and it has long relied on imports, especially the patterned rollers required for the production of release paper for artificial leather. There are still many problems in manufacturing technology and special surface treatment. To meet the needs of the market, some types of patterned rollers still need to be imported from abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Use polishing equipment to polish the surface of the seamless steel roller. After washing and drying with water, spray a layer of photosensitive glue with a spraying pressure of 0.1MPa and a spraying time of 10 minutes. -117), 1% ammonium dichromate, 3% titanium dioxide and 86% water are mixed and stirred evenly and made (percentages are mass percentages, that is, the ratio of the quality of each component to the total mass of photosensitive glue); in 500w iodine Expose under a tungsten light source, the vertical distance between the seamless steel roller and the iodine tungsten light source is 2.5m, and the exposure time is 30min. Immerse in the chromic acid solution for 60s, heat harden the film at 170°C for 1.5h, repair the defects of the photosensitive adhesive, and then spray the chemical corrosion solution evenly on the surface of the seamless steel roller, the spraying pressure is 0.2MPa, and the spraying time is 40min. The mass percentage composition of the corr...

Embodiment 2

[0033]Utilize polishing liquid to polish seamless steel roller, contain 200ml phosphoric acid, 150ml sulfuric acid, 25g sodium nitrate, 20g sodium chloride, 20g compound additive (by 2g sulfosalicylic acid, 3g 2-butyne- in every liter of polishing liquid) 1,4-diol, 3g sodium lauryl sulfate, 2g thiourea, 4g urotropine, 2g disodium edetate, 4g water), the balance is water, after washing and drying with water, Spray a layer of photosensitive glue, the spraying pressure is 0.1MPa, and the spraying time is 15min. The photosensitive glue is composed of 12% polyvinyl alcohol (Kuraray PVA-117 in Japan), 3% ammonium dichromate, 1% titanium dioxide and 84% water Mix and stir evenly (percentages are mass percentages, that is, the ratio of the mass of each component to the total mass of the photosensitive adhesive); exposure is carried out under a 500w iodine tungsten light source, and the vertical distance between the seamless steel roller and the iodine tungsten light source is 2.2m, ex...

Embodiment 3

[0035] Utilize polishing liquid to polish seamless steel roller, contain 200ml phosphoric acid, 150ml sulfuric acid, 25g sodium nitrate, 20g sodium chloride, 20g compound additive (by 2g sulfosalicylic acid, 3g 2-butyne- in every liter of polishing liquid) 1,4-diol, 3g sodium lauryl sulfate, 2g thiourea, 4g urotropine, 2g disodium ethylenediamine tetraacetate, 4g water), the water balance, after washing and drying with water, spray The upper layer of photosensitive glue, spraying pressure is 0.1MPa, spraying time is 25min, photosensitive glue is mixed with 8% polyvinyl alcohol (Japan Kuraray PVA-117), 2% ammonium dichromate, 1% titanium dioxide and 89% water Stir evenly to make (percentages are mass percentages, that is, the ratio of the mass of each component to the total mass of the photosensitive adhesive); exposure is performed under a 500w iodine tungsten light source, and the vertical distance between the seamless steel roller and the iodine tungsten light source is 2.8 ...

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Abstract

The invention discloses a pattern roller for release paper and a preparation method thereof. The preparation method comprises the following steps of polishing a seamless steel roller to obtain a bright surface of the seamless steel roller, coating a photoresist layer on the bright surface of the seamless steel roller, drying the photoresist layer, carrying out exposure of a preset area, carrying out development, chemical curing of a membrane and heat hardening of the membrane, corroding a non-preset area by a chemical corrosive liquid to obtain a coarse concave surface, removing the photoresist layer, and plating a decorative chromium layer so that the pattern roller is obtained. After patterns are formed on the seamless steel roller by the photoresist layer, a seamless steel roller surface which is not coated by the photoresist layer is corroded by the chemical corrosive liquid so that the seamless steel roller surface has a certain roughness. Therefore, the preparation method solves the problem that the traditional mechanical treatment method for forming patterns can damage the patterns easily. The pattern roller obtained by the preparation method has bright surfaces of convex parts and coarse microstructures of concave parts. An artificial leather product produced by the pattern roller has corresponding visual effects.

Description

technical field [0001] The invention relates to the field of artificial leather processing, in particular to a patterned roll for release paper and a preparation method thereof. Background technique [0002] During the manufacturing process of artificial leather, release paper is needed as a carrier and a temporary mold. Release paper is a special industrial paper with high added value. At present, only a few countries such as Japan, the United States, and Italy can produce release paper for artificial leather that meets the processing and manufacturing requirements. [0003] The invention whose application number is 200810079831.7 discloses a release paper for synthetic leather, a multifunctional layer is arranged between the base material and the release layer, the components of the multifunctional layer and the parts by weight are: adhesive 40-95; water 5-60; surfactant 1-5; the material for forming the release layer includes alkyd modified silicone resin, melamine resin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/00
Inventor 孙大伟陈冬平韩守臣
Owner ZHEJIANG RONGCHENG ROLL SHAFT
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