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pressure sensitive tape

A pressure-sensitive tape and adhesive technology, applied in the direction of pressure-sensitive films/sheets, adhesives, film/sheet-like adhesives, etc., to achieve the effect of high impact resistance

Active Publication Date: 2020-01-14
TESA SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mobile equipment is also exposed to higher loads due to humidity influences, temperature influences, etc.

Method used

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Embodiment Construction

[0284]Described below is the preparation of pressure-sensitive adhesive tapes according to the invention comprising a film carrier formed of PET with different thicknesses and a layer of self-adhesive composition (SKMS) with different contents of Expancel 920DU20 microspheres. For this, a 40% strength by weight adhesive in petrol / toluene / acetone was first prepared from 50.0% by weight of Kraton D1102AS, 45.0% by weight of Dercolyte A115, 4.5% by weight of Wingtack 10 and 0.5% by weight of antiaging agent Irganox 1010 solution. The weight content of the dissolved constituents relates here in each case to the dry weight of the solution obtained. The composition of the mentioned adhesives is characterized as follows:

[0285] Kraton D1102AS: Styrene-butadiene-styrene-triblock copolymer from Kraton Polymers with 17 wt% diblock, block polystyrene content: 30 wt%

[0286] Dercolyte A115: Solid alpha-pinene tackifying resin with a Ring and Ball softening temperature of 115°C and a ...

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Abstract

The invention relates to a pressure-sensitive adhesive tape formed of at least three layers, comprising: an inner layer F formed of a non-stretchable film carrier, a layer SK1 of a self-adhesive composition arranged on the film carrier layer F on one of the surfaces of and based on a vinyl aromatic block copolymer composition foamed with microspheres, a layer SK2 formed of a self-adhesive composition, which is arranged on the opposite surface of the film carrier layer F to the layer SK1 And based on the vinyl aromatic block copolymer composition foamed with microspheres, wherein the average diameter of the cavities formed by the microspheres in the self-adhesive composition layers SK1 and SK2 independently of each other is 20 to 60 μm.

Description

technical field [0001] The present invention relates to pressure-sensitive adhesive tapes (pressure-sensitive adhesive strips). Background technique [0002] Tapes are commonly used for the bonding of micro components in devices such as in the consumer electronics industry. To achieve this, it is necessary to adapt the shape of the tape segment to the shape of the part. In this case, even difficult-to-implement geometries are often required, which are obtained by stamping of adhesive tapes. Therefore, web widths (segment widths) of a few millimeters or less are not uncommon in stamped parts. Deformation of the stampings often occurs in the application of such sensitive tapes to components. [0003] In order to suppress or at least reduce said deformation, it has been found to be advantageous to integrate a film, such as a PET film, as an intermediate layer into the adhesive tape to absorb the tensile forces during application. [0004] Bonding with such tapes is increasi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/38C09J153/02C09J11/08
CPCC09J11/08C09J153/02C08L2205/20C08L2205/035C09J2203/334C09J2453/00C09J2467/006C09J2475/006C09J2301/412C09J2301/124C09J2301/302C08L45/00C08L57/02C08K9/10C09J2203/33C09J2400/24C09J7/387C09J7/255C09J7/38C09J7/22C09J2301/408B29B7/748B29B7/845B29B7/485B29B7/487B29B7/526B29B7/90B29B7/426B29B7/826B29B7/823C09J7/29C09J2203/326
Inventor A.布拉兹朱斯基A.伯迈斯特F.洛曼A.彼得森
Owner TESA SE