Re-peel-off type special double-faced adhesive sheet for fixing flexible printed circuit board

A flexographic printing, re-peelable technology, applied in the direction of adhesive type, ester copolymer adhesive, film/sheet adhesive, etc.

Inactive Publication Date: 2014-06-04
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this product is that it is not easy to peel off when there are poor bonding and rework problems in the initial bonding stage of the product

Method used

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  • Re-peel-off type special double-faced adhesive sheet for fixing flexible printed circuit board
  • Re-peel-off type special double-faced adhesive sheet for fixing flexible printed circuit board
  • Re-peel-off type special double-faced adhesive sheet for fixing flexible printed circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides a special double-sided adhesive sheet that can be peeled off again for fixing flexible printed circuit boards, such as figure 1 As shown, the double-sided adhesive sheet of this embodiment is a double-sided adhesive sheet 1 with a release liner, comprising a core material layer 32, a first adhesive layer 33 and a second adhesive layer 31, the described The core material layer 32 is disposed between the inside of the first adhesive layer 33 and the inside of the second adhesive layer 31, and also includes a first release liner 22 and a second release liner 21, the first release liner The pad 22 and the second release liner 21 are provided on the outer side of the first adhesive layer 33 and the second adhesive layer 31, respectively.

[0059] The core material of the above-mentioned core material layer is PET film, and the above-mentioned first adhesive layer includes the following components: in parts by weight, 100 parts by weight of acrylic p...

Embodiment 2

[0070] This embodiment provides a special double-sided adhesive sheet that can be peeled off again for fixing flexible printed circuit boards, such as figure 1 As shown, the double-sided adhesive sheet of this embodiment is a double-sided adhesive sheet 1 with a release liner, comprising a core material layer 32, a first adhesive layer 33 and a second adhesive layer 31, the described The core material layer 32 is disposed between the inside of the first adhesive layer 33 and the inside of the second adhesive layer 31, and also includes a first release liner 22 and a second release liner 21, the first release liner The pad 22 and the second release liner 21 are provided on the outer side of the first adhesive layer 33 and the second adhesive layer 31, respectively.

[0071] The core material of the above-mentioned core material layer is PET film, and the above-mentioned first adhesive layer includes the following components: in parts by weight, 100 parts by weight of acrylic p...

Embodiment 3

[0083] This embodiment provides a special double-sided adhesive sheet that can be peeled off again for fixing flexible printed circuit boards, such as figure 1 As shown, the double-sided adhesive sheet of this embodiment is a double-sided adhesive sheet 1 with a release liner, comprising a core material layer 32, a first adhesive layer 33 and a second adhesive layer 31, the described The core material layer 32 is disposed between the inside of the first adhesive layer 33 and the inside of the second adhesive layer 31, and also includes a first release liner 22 and a second release liner 21, the first release liner The pad 22 and the second release liner 21 are provided on the outer side of the first adhesive layer 33 and the second adhesive layer 31, respectively.

[0084] The core material of the above-mentioned core material layer is PET film, and the above-mentioned first adhesive layer includes the following components: in parts by weight, 100 parts by weight of acrylic p...

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Abstract

The invention provides a re-peel-off type special double-faced adhesive sheet for fixing flexible printed circuit board. The double-faced adhesive sheet for fixing a flexible printed circuit board comprises a first core material layer, a first adhesive layer and a second adhesive layer, wherein the core material layer is arranged between the inner side of the first adhesive layer and the inner side of the second adhesive layer, the core material of the core material layer is a polyester film with thickness not more than 12 microns, the first adhesive layer is a re-peel-off layer, the second adhesive layer is a permanent fixing layer, the initial adhesive force of the first adhesive layer is not more than 700g / 20mm, and the adhesive force after being fixed is not less than 900g / 20mm, and the adhesive force of the second adhesive layer is not less than 900g / 20mm. The double-faced adhesive sheet is prepared by adopting special acrylic acid adhesive and can be re-peeled off within short time, and the re-work performance is good, the permanent adhesion and fixation after re-working and fixing can be satisfied, and the adhesive sheet cannot warp and deform after aging within a certain environment.

Description

technical field [0001] The invention relates to a repeelable special double-sided adhesive sheet for fixing a flexible printed circuit board, which belongs to the technical field of electronic accessories. Background technique [0002] At present, in the electronics industry, flexible printed circuit boards (also known as FPCs) are more and more widely used. FPCs have the advantages of high reliability, low space occupancy, and flexible structures. Therefore, FPCs are also used in mobile phones, LCD TVs, computers, PDAs, etc. The most common way to link LEDs to the main circuit, and the use of FPC will increase day by day in the future. With the development of FPC's continuous pursuit of high-density lines and the trend of light, thin, short, and small, FPC needs to follow a precise line in technology, and puts forward higher requirements for supporting facilities such as people and objects. At the same time, it is necessary for FPC to be fixed The performance requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08
Inventor 李晶刘川
Owner 新纶电子材料(常州)有限公司
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