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Method for manufacturing laminated film material and manufactured laminated film material

A manufacturing method and film material technology, applied in the direction of film/sheet adhesive, film/sheet without carrier, adhesive type, etc., can solve the problem of not being able to ship immediately

Active Publication Date: 2020-04-28
SUMIKA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the usual polarizing plate manufacturing process, in order to stabilize the properties of the adhesive and achieve the required adhesive force, the adhesive in the product must be allowed to mature for a certain period of time, so it is impossible to ship the polarizing plate product immediately after completion

Method used

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  • Method for manufacturing laminated film material and manufactured laminated film material
  • Method for manufacturing laminated film material and manufactured laminated film material
  • Method for manufacturing laminated film material and manufactured laminated film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The preparation method of the test piece in Example 1 is the same as the aforementioned [test piece preparation], wherein the relative humidity of the humidifier is set at 65±5%, and the moisture content of the adhesive layer after passing through the humidifier is 0.4-0.6wt%. Through the aforementioned adhesion test, the adhesion of the test piece of Example 1 was 1.82N.

Embodiment 2

[0079] The preparation method of the test piece in Example 2 is the same as the aforementioned [test piece preparation], wherein the relative humidity of the humidifier is set at 75±5%, and the moisture content of the adhesive layer after passing through the humidifier is 1.0-1.4wt%. Through the aforementioned adhesion test, the adhesion of the test piece in Example 2 was 2.13N.

Embodiment 3

[0081] The preparation method of the test piece in Example 3 is the same as the aforementioned [test piece preparation], wherein the relative humidity of the humidifier is set at 85±5%, and the moisture content of the adhesive layer after passing through the humidifier is 1.4-1.8wt%. Through the aforementioned adhesion test, the adhesion of the test piece of Example 3 was 3.42N.

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Abstract

The present invention provides a method for manufacturing a laminated film material, and the method the steps: providing a first carrier film having an adhesive layer thereon, the adhesive layer containing an isocyanate compound; the first carrier film is subjected to tackifying treatment, a tackifier is provided for the adhesive layer in the tackifying treatment, and the tackifier is a hydroxyl-containing compound capable of reacting with an isocyanate compound; and attaching the tackified first carrier film to the second carrier film on the adhesive side to form the laminated film material.The invention also provides the laminated film material formed by the method. According to the present invention, the existing process can be adjusted in an economical manner, such that the prepared laminated film material product has the adhesion strength similar to the adhesion strength of the direct coating product.

Description

technical field [0001] This case is about a laminated film technology, and especially a method for manufacturing a laminated film that can be used in the field of polarizing plates and liquid crystal displays, and the laminated film produced by the manufacturing method. Background technique [0002] Due to the advantages of small size, light weight, low power consumption and good display quality, liquid crystal display (LCD) has become the mainstream device of flat panel display in recent years. The polarizer used in it is one of the key components in the liquid crystal display, and in order to improve the quality or production efficiency of the final product, each LCD manufacturer also has restrictions on the nature of the polarizer used or the delivery schedule, etc. Various needs. [0003] Among the various demands mentioned above, there are also demands such as temporary addition or urgent supply. However, in the usual polarizing plate manufacturing process, in order t...

Claims

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Application Information

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IPC IPC(8): C09J7/30C09J175/04C09J7/10C08G18/30
CPCC09J7/30C09J175/04C09J7/10C08G18/307
Inventor 陈文崇郭建生
Owner SUMIKA TECH
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