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Preparation method of color contact lens pad printing rubber head

A contact lens and rubber head technology, which is applied in printing, printing machines, rotary printing machines, etc., can solve the problems of incomplete deformation of color contact lens patterns in pad printing, unclear dots of pad printing patterns, and affecting the aesthetics of color contact lens patterns, etc. , to achieve the effect of clear pad printing dots and complete patterns

Inactive Publication Date: 2019-05-07
AISHENGHUA SUZHOU OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the pad printing pads purchased in the market do not indicate the hardness of the pad printing pads, and most of the pads do not specify whether the pads are suitable for printing color contact lens patterns. Through our actual pad printing process test and verification, when pad printing pads When the head hardness is lower than 25HC, the pattern of the pad printing color contact lens is deformed and incomplete, and the dots of the pad printing pattern become smaller, which is inconsistent with the design pattern requirements of the color contact lens; when the hardness of the pad printing rubber head is higher than 40HC, the hardness of the pad printing rubber head is too high. High, the dots of pad printing color contact lens patterns become larger after being squeezed by the rubber head, and the dots of pad printing patterns are not clear, which affects the aesthetics of color contact lens patterns

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] A preparation method for preparing the color contact lens pad printing glue head described in claim 1, its concrete steps are as follows:

[0028] (1) Pre-mix silica gel 623 with a certain amount of silicone oil for 30 minutes to prepare the color contact lens pad printing pad mixture; add the curing agent to the color contact lens pad printing pad mixture and pre-mix for 15 minutes; mix the pad raw materials Put it in a vacuum box for exhausting and vacuuming, the vacuum degree is -0.1MPa, and the vacuuming time is controlled at 10 minutes to prevent the silicone from curing; pour the vacuumized silicone raw material into the mold, and then vacuumize again, and the vacuuming time is controlled In 15 minutes; after the vacuuming is completed, place the rubber head base on the rubber head mold, put the rubber head mold into an oven at 60°C±5°C and cure for 2 hours, and prepare the required pad printing rubber head.

[0029] Pad printing pads for colored contact lenses wi...

Embodiment ( 1

[0031] 76% color contact lens pad printing rubber head silica gel 623 main base material, 19% silicone oil, 5% curing agent (dibutyl stannate dilaurate), mix uniformly, according to a kind of preparation claim 1 The preparation method of the color contact lens pad printing rubber head is to prepare a soft rubber head with a hardness of about 25HC.

Embodiment ( 2

[0033] 80% color contact lens pad printing rubber head silica gel 623 main substrate, 15% silicone oil, 5% curing agent (dibutyl stannate dilaurate), mix uniformly, according to a kind of preparation claim 1 The preparation method of the color contact lens pad printing rubber head is to prepare a hard rubber head with a rubber head hardness of about 30HC.

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PUM

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Abstract

The invention discloses a preparation method of a color contact lens pad printing rubber head, and the color contact lens pad printing rubber head comprises the following components in percentage by weight: 76%-86% of silica gel 623, 9%-19% of silicone oil, and 5% of a curing agent (dibutyltin dilaurate), the method has the advantages that the content of the silicon oil in the proportioning is adjusted for controlling the hardness of the pad printing rubber head to be in the range of 25 HC to 40 HC, and colorful contact lenses with complete patterns and clear dots can be printed in a pad printing manner.

Description

technical field [0001] The invention relates to a preparation method of a color contact lens pad printing rubber head. By adjusting the content of silicone oil and controlling the hardness of pad printing pads, color contact lenses with complete pad printing patterns and clear dots can be obtained. Background technique [0002] Colored contact lenses were first proposed by Johnson & Johnson in the United States to help people with eye injuries cover eye blemishes, and were later widely used in film makeup. Because it no longer sticks to the vision correction function like traditional contact lenses, it gradually penetrates into work and life, and has become a trendy cosmetic product for fashionable people to dress themselves up and show their personality. [0003] For color contact lenses, use pad printing equipment to transfer the bottom layer and ink to the plastic mold of contact lenses. The invention relates to a method for preparing color contact lens pads. By adjustin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K5/57B41F17/00
Inventor 张爱军
Owner AISHENGHUA SUZHOU OPTICAL