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Method for manufacturing laminated film material and laminated film material produced therefrom

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: 2022-03-25
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 laminated film material produced therefrom
  • Method for manufacturing laminated film material and laminated film material produced therefrom
  • Method for manufacturing laminated film material and laminated film material produced therefrom

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 invention provides a method for manufacturing a laminated film, which includes providing a first carrier film, an adhesive layer is provided on the first carrier film, and the adhesive layer contains an isocyanate compound; Adhesive treatment is to provide a tackifier to the adhesive layer, and the tackifier is a hydroxyl-containing compound that can react with isocyanate compounds; Laminated film. This case also provides a laminated film material formed by this method. Through the present invention, the existing manufacturing process can be adjusted in an economical way, that is, the laminated film product can have the adhesive strength close to that of the directly coated 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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Patent Type & Authority Patents(China)
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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