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Production process of optically clear adhesive (OCA) optical adhesive

A production process, optical adhesive technology, applied in the direction of adhesives, films/sheets without carriers, etc., can solve the problems of high waste discharge process, small hole area, not very good, etc., to achieve good waste discharge effect, material quality Soft, close-fitting effect

Inactive Publication Date: 2019-09-13
珠海中晟光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the waste discharge process of OCA optical glue only has to publicly clean up the waste around the OCA optical glue product, and the waste discharge of the small hole in the middle of the OCA optical glue has a high impact on the waste discharge process because the waste area is inside the product and the small hole area is small. needs, the current technology does not have a good solution

Method used

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  • Production process of optically clear adhesive (OCA) optical adhesive
  • Production process of optically clear adhesive (OCA) optical adhesive
  • Production process of optically clear adhesive (OCA) optical adhesive

Examples

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Embodiment 1

[0028] Embodiment 1: refer to Figure 1-Figure 4 , a production process of OCA optical adhesive, the OCA optical adhesive semi-finished product 5 produced in the present embodiment includes light release film layer 7, OCA layer 8, heavy release film layer 9 and bottom film layer arranged in sequence from top to bottom 10. The bottom film layer 10 is used to protect the OCA optical glue, and the production process includes the following steps:

[0029] S1. Put the OCA optical adhesive semi-finished product 5 flat on the workbench, and die-cutting tool 11 is punched from top to bottom. The die-cutting tool 11 is provided with a circular cutter 12, and the light release film layer 7 and the OCA layer 8 Completely cut off, the heavy release film layer 9 is cut in half to form a circular hole;

[0030] S2. Remove the light-release film layer 7 above the small hole. The specific method is to attach the Marathon tape to the light-release film layer 7, and the Marla tape sticks to th...

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Abstract

The invention discloses a production process of optically clear adhesive (OCA) optical adhesive. Small holes are formed by punching; after a light release film layer on the small holes is removed, a first waste discharge film is attached to a waste adhesive on the small holes of an OCA optical adhesive semi-finished product; and then the waste adhesive is taken away. The first waste discharge filmis a polyvinyl chloride (PVC) film, and compared with a common waste discharge film, the first waste discharge film is soft in material, is more tightly attached to an OCA layer, and is not adhered to the light release film layer, so that the waste discharge effect is good, and the waste adhesive on the small holes can be cleaned.

Description

technical field [0001] The invention relates to the field of optical glue production and processing, in particular to a production process of OCA optical glue. Background technique [0002] OCA optical glue is one of the raw materials for important touch screens. The optical acrylic adhesive is made without a base material, and then a layer of release film is attached to the upper and lower base layers. It is a double-sided adhesive tape without a base material. It is the best adhesive for touch screens, suitable for fixing optical components of mobile devices such as smartphone display screens, cameras, etc. In recent years, due to the development of smartphones in the direction of borderless, the water drop screen and eye-catching screen smartphones have been accepted by major mobile phone manufacturers as popular solutions. In order to adapt to the screen of water-drop screen or eye-catching screen smartphones, the OCA optical adhesive designed for this purpose The prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10
CPCC09J2433/00C09J7/10
Inventor 胡代冬
Owner 珠海中晟光电科技有限公司
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