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Preparation technique of silica-gel plate

A preparation process, a technology of silica gel, applied in the direction of copying of printing plates, making printing surface, printing, etc., can solve the problems such as the radian of the hot stamping surface should not be too large, the bonding of the hot stamping film layer is not strong, and the pictures and texts are incomplete. The printed image is full of text, the effect is good, and the surface smoothness is high.

Inactive Publication Date: 2008-12-17
郑汉平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current hot stamping is flat hot stamping, that is, the aluminum plate on the silicone plate is flat, which requires that the curvature of the entire hot stamping surface of the substrate should not be too large (generally within 8mm), otherwise the hot stamping film layer will stick Insufficient or even incomplete graphics and text
That is to say, when the hot stamping surface of the hot stamping object is irregular or the radian is large, the traditional hot stamping mold production cannot be done.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Mold design and processing

[0031] Carve the corresponding mold according to the three-dimensional drawing. The mold includes a concave mold and an upper mold. The shape of the upper mold cavity of the concave mold is the corresponding three-dimensional pattern, and the upper mold is the bottom plate mold of the silica gel plate. When the radian of the product is less than 8mm, the upper die must be made into a flat die; when the radian of the product is greater than 8mm, the upper die must be made into a corresponding radian die. When the curvature of the product is greater than 8mm, if you want to use a flat mold to achieve this curvature, you must increase the thickness of the silicone according to the curvature, and the thermal conductivity of silicone is not good. The entire pattern of hot stamping is heated unevenly, and the hot stamping effect is seriously affected; and now a corresponding curved aluminum mold is made to ensure that the thickness of the silic...

Embodiment 2

[0054] 1) Mold design and processing

[0055] Carve the corresponding mold according to the three-dimensional drawing. The mold includes a concave mold and an upper mold. The shape of the cavity on the concave mold is the corresponding three-dimensional pattern. When the radian of the product is less than 8mm, the upper die must be made into a flat die; when the radian of the product is greater than 8mm, the upper die must be made into a corresponding radian die. When the curvature of the product is greater than 8mm, if you want to use a flat mold to achieve this curvature, you must increase the thickness of the silicone with the curvature.

[0056] 2) Processing of mold sets

[0057] A) Preparation of upper mold treatment liquid

[0058] Take 25% of vinyltriethoxysilane, 20% of absolute ethanol, 50% of deionized water and 5% of the concentration of 1mol / dm 3 The hydrochloric acid is stirred and mixed, and after adding all the materials, continue to stir for 2 hours and set...

Embodiment 3

[0077] 1) Mold design and processing

[0078] Carve the corresponding mold according to the three-dimensional drawing. The mold includes a concave mold and an upper mold. The shape of the cavity on the concave mold is the corresponding three-dimensional pattern. When the radian of the product is less than 8mm, the upper die must be made into a flat die; when the radian of the product is greater than 8mm, the upper die must be made into a corresponding radian die. When the curvature of the product is greater than 8mm, if you want to use a flat mold to achieve this curvature, you must increase the thickness of the silicone with the curvature.

[0079] 2) Processing of mold sets

[0080] A) Preparation of upper mold treatment liquid

[0081] Take 23% of vinyltriethoxysilane, 29% of absolute ethanol, 46% of deionized water and 2% of the concentration of 1mol / dm 3 The hydrochloric acid is stirred and mixed, and after adding all the materials, continue to stir for 1.8 hours for l...

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Abstract

The invention relates to a preparation technology of a silica gel plate. At first, a corresponding cover die is engraved according to a three-dimensional diagram for design and processing of the die assembly. The cover die comprises a cavity die and an upper die. The upper die is cleaned with mixed liquid of vinyl triethoxy silane, absolute ethyl alcohol, de-ionized water and hydrochloric acid. The silicone oil parting compound is coated on the surface of the cavity die and heated until the cavity die is completely moistened by the parting compound. After R401 / 70S or mixture of R401 / 70S and R401 / 40S is mixed and then sulphurated and the dies are matched and cut, the post cure is performed. The finished product is baked in an air-blast oven. As the solid cover die and the processing technology thereof are adopted, the preparation technology of the invention can be used in the hot stamping surface with different radian measures or the irregular hot stamping surface and has the advantages that the hot stamping graphic context is full, clear, and high in surface smoothness. The gold stamping with good effect adopts the solid silica gel module as the production technology.

Description

【Technical field】 [0001] The invention relates to a preparation process of a silica gel plate, in particular to a preparation process of a three-dimensional silica gel mold for bronzing. 【Background technique】 [0002] Hot stamping is to use the pressure and heat of the hot stamping plate to hot stamp the hot stamping paper on the substrate, so the quality of the hot stamping mold is the key factor affecting the hot stamping effect. The current hot stamping is flat hot stamping, that is, the aluminum plate on the silicone plate is flat, which requires that the curvature of the entire hot stamping surface of the substrate should not be too large (generally within 8mm), otherwise the hot stamping film layer will stick Insufficient or even incomplete pictures and texts. That is to say, when the hot stamping surface of the hot stamping object is irregular or has a large radian, the traditional hot stamping mold production cannot be done. 【Content of invention】 [0003] In vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41C3/04B41D7/00B29C35/02B29C33/56B29C43/02B29C43/34B29C43/52B29B7/00
Inventor 郑汉平
Owner 郑汉平
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