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Preparation method of gum

A technology of self-adhesive and double-sided adhesive, applied in the direction of adhesives, film/sheet adhesives, metal processing, etc., can solve the problems of easy generation of foreign objects, high manufacturing costs, easy size deviation, etc., to achieve the effect of ensuring accuracy

Active Publication Date: 2013-01-16
NANJING GRANDEUR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has become mature in the market, but the secondary punching has certain disadvantages, such as: high manufacturing costs, a lot of manpower, easy to deviate in size, easy to produce foreign matter

Method used

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  • Preparation method of gum
  • Preparation method of gum
  • Preparation method of gum

Examples

Experimental program
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Embodiment Construction

[0021] The following is a detailed description of the preparation method of back-shaped back glue (frame glue) for one-time punching and molding waste in conjunction with the accompanying drawings.

[0022] fit: see figure 1 , attach the double-sided adhesive 1 to the release surface of the release film (B release film) 2 with a release force of 60g±5g; Attach the release surface of the release film (A release film) 3; attach the 40G protective film (C protective film) 4 to the non-release surface of the release film with a release force of 60g±5g.

[0023] Die-cut: see figure 2 , 3 , use a forming knife die to die-cut on the bonded material, the knife die faces the 3-5g release force release film, the inner frame of the knife die cuts off the 3-5g release force release film and double-sided tape, the knife 3-5g release force release film, double-sided adhesive, 60g ± 5g release force release film are cut off by the outer frame of the mold; 3-5g release force release film ...

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Abstract

The invention provides a gum preparation method which has the advantages that the gum is punched in one step, the preparation method is simple, the cost is low and the size accuracy of the prepared gun is high. The gum preparation method comprises the following steps of: attaching a double-faced adhesive tape onto a release film B; tearing off the self-contained release paper of the double-faced adhesive tape and attaching the double-faced adhesive tape onto a release film A; attaching a protection film C onto the release film B; punching the film by using a molding cutting die, wherein the inner frame of the cutting die cuts off the release film A and the double-faced adhesive tape, the outer frame of the cutting die cuts off the release film A, the double-faced adhesive tape and the release film B, the release film A and the double-faced adhesive tape form a cutting mark with an inner frame and an outer frame, and the release film B form a cutting mark with an outer frame; pulling off the release film A in the inner frame and attaching a protection film E, wherein the protection film E covers an area in the outer frame of the release film A; and removing the double-faced adhesive tape inside the protection film E and the inner frame, and the release film A, the double-faced adhesive tape and the release film B outside the outer frame, and attaching a protection film D onto the release film A.

Description

technical field [0001] The invention relates to a preparation method of a back glue, in particular to a preparation method of back-type frame glue used for making liquid crystal screens, touch screens and other display screens. Background technique [0002] With the rapid development of the display screen and touch screen industry, the requirements for the back-type frame glue used in the production process are also getting higher and higher. Since the frame glue products only have glue around the sides, and the width of the glue is relatively small, in the production and production At that time, the problem of waste discharge was more difficult to overcome, and the previous process used secondary flushing. The so-called secondary punching is to set the positioning hole knife edge on the punching die for the first step of punching, and punch out the positioning hole on the release film material used. When performing the second step of punching, the second step of punching T...

Claims

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Application Information

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IPC IPC(8): C09J7/02B26F1/38
Inventor 王秀梅彭开云
Owner NANJING GRANDEUR TECH
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