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pe foam tape

A technology of foam and tape, applied in adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve the problem of low pass rate of tape reliability test, decline in overall product performance, and unreliable reliability. Guarantee and other issues to achieve the effect of ensuring application stability, increasing the difficulty of disassembly, and improving peel strength and cohesion

Active Publication Date: 2022-07-19
LOHMANN ADHESIVE TAPE TECH TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method of reducing the peeling force: First, the pass rate of the tape reliability test is low; because the size of the customer's plate and the surface energy fluctuate greatly, the bonding effect is not good
On the other hand, it will lead to the decline of the overall performance of the product
[0004] There are also some tapes that reduce the viscosity of the tape through UV curing or heat curing to improve the yield of anti-dismantlement, but this increases the process and costs, and the reliability during the application process cannot be guaranteed.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0049] The preparation method of the adhesive is as follows: firstly, weigh the acrylate polymer solution in the glue mixing bucket, and turn on the stirrer; then weigh the tackifying resin solution and add it into the agitating glue bucket until it is evenly stirred, and finally add the crosslinking agent, Continue stirring for 30 to 50 minutes. The glue obtained after adding the cross-linking agent must be used within two hours after the stirring.

[0050] Wherein, the acrylate polymer solution is prepared by free radical polymerization in the reactor by the following components, and its composition ratio is as follows by mass percentage:

[0051] Acrylic acid (AA) 0.5~2wt%

[0052] Methyl acrylate (MA) 0.5~2wt%

[0053] 2-Hydroxyethyl acrylate (HEA) 1~2wt%

[0054] Butyl acrylate (BA) 2~10wt%

[0055] Isooctyl Acrylate (2-EHA) 30~40wt%

[0056] Azobisisobutyronitrile (AIBN) 0.05~0.2wt%

[0057] Ethyl acetate 45~60wt%.

[0058] Acrylic acid (AA) and 2-hydroxyethyl acryla...

Embodiment 1

[0085] The adhesive of the present invention includes a glue solution and a cross-linking agent, and the amount of the cross-linking agent is 1.86 wt % of the mass of the glue solution; the glue solution is a combination of an acrylate polymer solution and a tackifying resin solution , wherein the acrylate polymer solution accounts for 60wt%, and the tackifying resin solution accounts for 40wt%.

[0086] The preparation method of the adhesive is as follows: firstly, according to the formula, weigh the acrylate polymer solution in the glue mixing bucket, and turn on the stirrer; then according to the formula, weigh the tackifying resin solution and add it into the mixing glue bucket until it is evenly stirred, and finally add it. Cross-linking agent, continue to stir for 40 minutes, and the glue obtained after adding the cross-linking agent must be used within two hours after stirring.

[0087] The components and mass percentages of the acrylate polymer solution are:

[0088] ...

Embodiment 2

[0108] The performance test results of the adhesive formula and the adhesive tape are shown in Table 1, and the preparation method is the same as that in Example 1.

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Abstract

The invention belongs to the field of tapes, and relates to a PE foam tape, comprising: an adhesive layer and a foam layer, the adhesive layer includes a glue solution and a crosslinking agent, and the glue solution is an acrylate polymer A combination of solution and tackifying resin solution. The synergistic effect of the soft monomers isooctyl acrylate and rosin glyceride in the adhesive formulation of the present invention can improve the mobility of molecules, so that at 80°C, the bond strength will be attenuated greatly, so as to achieve high temperature viscosity reduction , the purpose of easy anti-demolition. After returning to normal temperature, the viscosity of the glue can be fully restored to ensure the stability of the product application in the later stage.

Description

technical field [0001] The invention belongs to the field of adhesive tapes, and in particular relates to a PE foam adhesive tape. Background technique [0002] With the continuous intensification of market competition, the pressure to reduce costs has surged, and more and more customers have put forward the demand for tapes to be dismantled. [0003] Generally, tape manufacturers reduce the coating weight of the glue for the upper and lower adhesive layers, thereby reducing the peeling force of the tape to improve the yield of the rework. The disadvantages of this method of reducing peel force: First, the pass rate of the tape reliability test is low; because the customer's sheet size and surface energy fluctuate greatly, the bonding effect is not good. On the other hand, it will lead to the decline of the overall performance of the product. [0004] There are also some tapes through UV curing or thermal curing to reduce the viscosity of the tape and improve the reverse d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/30C09J7/26C09J133/08C09J193/04C09J11/06C09J11/08
CPCC09J7/30C09J7/26C09J133/066C09J11/06C09J11/08C09J2301/124C09J2400/243C09J2423/046C09J2433/00C08L93/04C08K5/34924
Inventor 李增勇韦强王立伟孙锋杰李智仁
Owner LOHMANN ADHESIVE TAPE TECH TIANJIN
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