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Peelable pressure-sensitive adhesive and its preparation method, and method for preparing protective film

A pressure-sensitive adhesive and protective film technology, which is applied in the input/output process of adhesives, data processing, optics, etc., can solve the problems of complex process, low production efficiency, long production time, etc., to avoid compounding processes and improve production efficiency. , The effect of simplifying the composite process

Inactive Publication Date: 2018-03-09
苏州永诺电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After this kind of traditional protective film manufacturing process is bonded with the release film, it needs to be matured for 3~7 days. The transfer of defects that need to be bonded with the release film and the transfer of the bottom of the tube after the protective film is rolled, the process is relatively difficult. Complicated, and the production time required is relatively long, and the production efficiency is low

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0046] The present invention also provides a preparation method of the above-mentioned peelable pressure-sensitive adhesive, comprising the following process steps:

[0047] (A) Add polyacrylate polymer and diluent to the reactor at 60°C~80°C and mix evenly;

[0048] (B) After cooling down to below 40°C, add photoinitiator, thermal curing agent and curing accelerator, stir for 60-120 minutes and then discharge. The whole stirring process is completed in a light-proof environment.

[0049] The present invention also provides a production process for making a protective film using the above-mentioned peelable pressure-sensitive adhesive, which is characterized in that it includes the following steps:

[0050] (1) Evenly coat the pressure-sensitive adhesive on the PET protective film substrate;

[0051] (2) The PET protective film base material coated with pressure-sensitive adhesive in step (1) is directly combined with the hardened surface of the ITO film after passing through...

Embodiment 1

[0065] On the coating line, the thermosetting pressure-sensitive adhesive is evenly coated on a 50um PET substrate, and the dry thickness of the pressure-sensitive adhesive coating is 10um. After passing through the oven, it is directly compounded with the hardened surface of the ITO film. The laminated film is peeled at 180° at a speed of 300mm / min, and the peeling force is 8.6g / 25mm;

[0066] After the composite film was treated at 150°C for 1h → at room temperature for 30min → at 150°C for 1h at high temperature, and then placed at room temperature for 20min, it was peeled at 180° at a peeling speed of 300mm / min. The peeling force for ITO HC was 13.8g / 25mm, and there was no Residual glue and precipitation.

[0067] Then through the process of recrystallization→etching→electrode formation→cutting→assembly→inspection.

Embodiment 2

[0069] On the coating line, the thermosetting pressure-sensitive adhesive is evenly coated on a 125um PET substrate, and the dry thickness of the pressure-sensitive adhesive coating is 10um. After passing through the oven, it is directly compounded with the hardened surface of the ITO film. The laminated film is peeled at 180° at a speed of 300mm / min, and the peeling force is 5.6g / 25mm;

[0070] After the composite film was treated at 150°C for 1h→normal temperature for 30min→150°C for 1h, after being placed at room temperature for 20min, it was peeled at 180° at a peeling speed of 300mm / min. The peeling force for ITO HC was 9.8g / 25mm, and there was no Residual glue and precipitation.

[0071] Then through the process of recrystallization→etching→electrode formation→cutting→assembly→inspection.

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Abstract

The invention discloses a peelable pressure-sensitive adhesive and its preparation method, and a method for preparing the protective film. A special peelable pressure-sensitive adhesive is dried in anoven during the preparation process of the protective film and then directly bonded with a hardening face of an ITO film; after the high-temperature process, the PET-ITO film has low warping property, and is free from pollution to the protected HC face; thus the cost of the protective film is largely reduced, the discarding of the protective film and the ITO film is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a peelable pressure-sensitive adhesive, a preparation method thereof, and a method for making a protective film with it, and belongs to the technical field of high-temperature-resistant protective films. Background technique [0002] PET-ITO refers to a high-tech product obtained by sputtering a transparent indium tin oxide (ITO) conductive film coating on a PET base material by using magnetron sputtering technology and then undergoing high-temperature annealing treatment. Due to the excellent photoelectric properties of ITO thin film materials, it has developed rapidly in recent years, especially in the fields of flat-panel liquid crystal displays and touch screens. [0003] Preparation and use of traditional high-resistant protective film for ITO: Low Oligmer precipitation PET coating high-temperature resistant thermosetting pressure-sensitive adhesive → laminating with release film after passing through the oven → winding of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J11/06G02B1/14G06F3/041
CPCC09J11/06C09J133/00G06F3/041G06F2203/04103G02B1/14
Inventor 蒋超张文军单明丽
Owner 苏州永诺电子材料有限公司
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