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Adhesive strips

A pressure-sensitive tape, adhesive technology, applied in the direction of pressure-sensitive films/sheets, adhesives, film/sheet-like adhesives, etc.

Active Publication Date: 2018-10-02
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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Examples

Experimental program
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Embodiment Construction

[0301] Described below is the preparation of pressure-sensitive adhesive tapes according to the invention, each consisting of a separate layer SK1 of a self-adhesive composition based on a vinyl aromatic embedding foamed with microspheres Expancel 920 DU80. segment copolymer components. Here, the microsphere content of Expancel 920DU80 was varied.

[0302] 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 (also referred to as Adhesive Solution 1). 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:

[0303] Kraton D1102AS: Styrene-butadiene-styrene-triblock copolymer from Kraton Polymers with 17 wt% diblock, block polystyrene content: 30...

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Abstract

The invention relates to a pressure-sensitive adhesive strip comprising at least one layer SK1, preferably exactly one layer SK1, of a self-adhesive composition based on a vinylaromatic block copolymer composition foamed with microballoons, where the mean diameter of the voids formed by the microballoons in the self-adhesive composition layer SK1 is 45 to 110 [mu]m.

Description

technical field [0001] The present invention relates to pressure-sensitive adhesive tapes (pressure-sensitive adhesive strips). Background technique [0002] Adhesive tapes are commonly used, for example, for the bonding of tiny components in devices in the consumer electronics industry. To achieve this, it is necessary to adapt the shape of the tape segment to the shape of the component. Here, even difficult-to-achieve (schwierig) geometries are often required, which are obtained by stamping the adhesive tape. Therefore, a web width (tab width) of a few millimeters or even less is not uncommon in stampings. Deformations of stamped parts often occur when such sensitive adhesive tapes are applied to components. [0003] In order to suppress or at least reduce said deformations, it has been found to be advantageous to integrate a film, for example a PET film, as an intermediate layer into the adhesive tape in order to absorb the stretching forces during application. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/20C09J145/00C09J153/02
CPCC09J145/00C08L2203/14C08L2205/025C08L2205/035C09J2301/30C09J2301/124C09J2301/122C09J2301/302C08L53/02C08L2203/20C08L2205/20C09J7/387C08K9/10C09J2203/326C09J153/02C09J2467/006C09J2301/412C09J2301/408C08L91/00C09J7/29C09J7/255C09J11/08C09J7/22C09J2203/33C09J2400/24C09J2453/00B32B5/20
Inventor A.布拉兹朱斯基A.伯迈斯特A.彼得森
Owner TESA SE