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PE foam tape

A foam and tape technology, applied in the direction of adhesives, film/sheet adhesives, non-polymer adhesive additives, etc. Security and other issues, to ensure the stability of disassembly, increase the difficulty of disassembly, and ensure the stability of the application

Active Publication Date: 2022-06-03
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

[0026] 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.

[0027] Wherein, the acrylate polymer solution is prepared by the following components by radical polymerization in the reactor, and its composition ratio is as follows by mass percentage:

Acrylic acid (AA) 0.5~2wt%

Methyl acrylate (MA) 0.5~2wt%

2-Hydroxyethyl acrylate (HEA) 1~2wt%

Butyl acrylate (BA) 2~10wt%

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

Azobisisobutyronitrile (AIBN) 0.05~0.2wt%

Ethyl acetate 45~60wt%.

[0028]Acrylic acid (AA) and 2-hydroxyethyl acrylate (HEA) in the above acrylate polymer solution are function...

Embodiment 1

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%.

[0050] 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.

[0051] The components and mass percentages of the acrylate polymer solution are:

Acrylic AA 1.5wt...

Embodiment 2

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Abstract

The invention belongs to the field of adhesive tapes, and relates to a PE foam adhesive tape, which comprises an adhesive layer and a foam layer, the adhesive layer comprises a glue solution and a cross-linking agent, and the glue solution is a composition of an acrylate polymer solution and a tackifying resin solution. Under the synergistic effect of the soft monomer 2-ethylhexyl acrylate and rosin glyceride in the formula of the adhesive, the movement ability of molecules can be improved, and the bonding strength of the adhesive can be greatly attenuated at 80 DEG C, so that the purposes of high-temperature viscosity reduction and easy reverse disassembly are achieved. The viscosity of the glue can be fully recovered after normal temperature is recovered, so that the later product application stability is ensured.

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 Applications(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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