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Surface micro-crosslinking process suitable for preparing deep-texture film

A technology of micro-crosslinking and deep texture, which is applied in the direction of pretreatment surface, special surface, surface coating liquid device, etc., can solve the problems of incomplete texture transfer, UV resin residue, high cost of mold preparation, etc., and achieve improvement Release effect, control thickness, and avoid the effect of residual glue problem

Inactive Publication Date: 2022-01-21
CHANGZHOU HUAWEI ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the defects of incomplete texture transfer, UV resin remaining in the roller mold texture and high precision mold preparation cost in the existing UV transfer printing process, and provides a new method suitable for preparing deep texture films. Surface micro-crosslinking process

Method used

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  • Surface micro-crosslinking process suitable for preparing deep-texture film
  • Surface micro-crosslinking process suitable for preparing deep-texture film
  • Surface micro-crosslinking process suitable for preparing deep-texture film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A surface micro-crosslinking process suitable for preparing deep-textured films, the surface micro-crosslinking process includes a roller mold 4 with a deep texture on the outer surface, and the depth of the deep texture on the roller mold 4 is 10 μm, corresponding to The pitch of adjacent deep textures is 5 μm, and the surface micro-crosslinking process includes the following steps:

[0058] A, getting thickness is on the PET base film 3 of 30 μ m, and coating one deck UV resin on the upper surface of described PET base film 3, forms UV sol layer 2, and the thickness of described UV sol layer 2 is 15 μ m;

[0059] B. The UV sol layer 2 is radiated and cured at normal temperature and pressure, so that the upper surface of the UV sol layer 2 forms a micro-crosslinked surface 1, and the thickness of the micro-crosslinked surface 1 is 0.05 of the thickness of the UV sol layer 2. times, wherein the degree of micro-crosslinking of the micro-crosslinked surface 1 is controlle...

Embodiment 2

[0078] A surface micro-crosslinking process suitable for preparing deep-textured films, the surface micro-crosslinking process includes a roller mold 4 with a deep texture on the outer surface, and the depth of the deep texture on the roller mold 4 is 20 μm, corresponding to The pitch of adjacent deep textures is 5 μm, and the surface micro-crosslinking process includes the following steps:

[0079] A, getting a thickness on the PET base film 3 of 50 μm, and coating one deck of UV resin on the upper surface of the PET base film 3 to form a UV sol layer 2, the thickness of the UV sol layer 2 is 30 μm;

[0080] B. The UV sol layer 2 is radiated and cured at normal temperature and pressure, so that the upper surface of the UV sol layer 2 forms a micro-crosslinked surface 1, and the thickness of the micro-crosslinked surface 1 is 0.1 of the thickness of the UV sol layer 2. times, wherein the degree of micro-crosslinking of the micro-crosslinked surface 1 is controlled at 8%;

[0...

Embodiment 3

[0098] Preferably, the radiation curing in step B is EB radiation.

[0099] Preferably, the EB radiation is irradiated by an electron beam with 300 MeV, the radiation atmosphere is 95% nitrogen environment, and the radiation time is 1 second.

[0100] Other implementation modes in this embodiment are the same as those in Embodiment 2.

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Abstract

The invention discloses a surface micro-crosslinking process suitable for preparing a deep-texture film. The surface micro-crosslinking process comprises a roller mold with deep textures on the outer surface, the depth of the deep textures on the roller mold is 10-20 microns, the distance between every two adjacent deep textures is 5 microns, and the surface micro-crosslinking process comprises the following steps that A, a UV sol layer is formed on a PET base film; B, a micro-crosslinking surface is formed on the UV sol layer; C, the UV sol layer is pressed together with the roller mold; and D, a UV lamp is adopted for light curing, and rolling is conducted. According to the surface micro-crosslinking process suitable for preparing the deep-texture film, a texture transfer printing process is adopted, namely, a deep texture structure, namely a microstructure, on the surface of the roller mold is transferred to the surface of the PET base film and is firmly combined with the surface of the PET base film, and uniform deep textures are formed; high-precision microstructures can be subjected to transfer printing, and meanwhile, the deep textures with the depth being 10-20 microns also can be subjected to transfer printing; and by means of the manner that micro-crosslinking and UV curing are organically combined, step-by-step effective control of surface micro-crosslinking and overall crosslinking curing of UV resin is realized.

Description

technical field [0001] The invention relates to the technical field of preparation of UV films, in particular to a surface micro-crosslinking process suitable for preparing deep texture films. Background technique [0002] UV film refers to a film with special texture prepared by UV transfer printing on the surface of the substrate. The substrate is generally made of transparent materials, such as PET, PC, PMMA, etc. [0003] The texture style and fineness of the UV film are determined by the roller mold for UV transfer. The finer the roller mold, the finer the textured film is, so the key point of this technology lies in the texture mold and the transfer process. The most commonly used and most popular textured film is the brushed film. There are also many published patents reporting the basic technical content of the UV transfer process. [0004] For example, the patent number is CN102520465A, "A Preparation Method of Optical Film" specifically discloses the following pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/06B05D7/04B05D3/06B05D7/24
CPCB05D5/061B05D7/04B05D3/067B05D7/24B05D2502/00B05D2201/02
Inventor 范国威丁利明路健
Owner CHANGZHOU HUAWEI ADVANCED MATERIAL
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