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Foam double-sided adhesive tape and production method thereof

A technology of double-sided tape and foam, applied in the direction of adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problem of limited application, adhesive performance, ring test resistance, cushioning performance, and shear resistance Performance Light-shielding performance, easy to remove problems such as heavy industry, to achieve the effect of easy operation, high-level bonding force, suitable for large-scale industrial production

Active Publication Date: 2020-03-13
安徽屹珹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foam double-sided adhesives in the prior art also have deficiencies in adhesive performance, ring test resistance, cushioning performance, shear force resistance, light-shielding performance, easy removal and heavy work performance, etc., which limit their use in large areas. Application in module assembly of large-scale liquid crystal display devices

Method used

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  • Foam double-sided adhesive tape and production method thereof
  • Foam double-sided adhesive tape and production method thereof

Examples

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Effect test

preparation example Construction

[0089] The present invention also provides a method for preparing the foam double-sided adhesive tape described in the above technical solution, comprising the following steps:

[0090] a) Mix the thermoplastic elastomer and the reinforcing agent in the solvent evenly, then add the tackifying resin, softener, antioxidant and filler in sequence for mixing to obtain the adhesive dispersion; then apply the above adhesive dispersion to the release material Dry on the surface to obtain a removable pressure-sensitive adhesive layer compounded with a release material on one side;

[0091] b) Attach the first pressure-sensitive adhesive layer compounded with a release material on one side of the foam layer, and then attach the second pressure-sensitive adhesive layer compounded with a release material on the other side of the foam layer , after removing the release material on the second adhesive pressure-sensitive adhesive layer, it is rolled up to obtain a foam double-sided adhesive...

Embodiment 1

[0120] The foam double-sided adhesive tape provided by embodiment 1 is based on PU black foam with a total thickness of 600 μm (comprising an ultra-thin PET layer with a thickness of 10 μm compounded on one side); A removable rubber pressure-sensitive adhesive layer with a thickness of 200 μm is attached; one side of the ultra-thin PET layer of the substrate is coated with an acrylic pressure-sensitive adhesive layer with a thickness of 50 μm; the other side of the acrylic pressure-sensitive adhesive layer is compounded with Double silicon glassine release material with a thickness of 110μm.

[0121] The removable rubber pressure-sensitive adhesive layer is prepared from the raw materials of the following components: 55 parts by weight of styrene-isoprene-styrene block copolymer (SIS), 45 parts by weight of terpene resin, poly 15 parts by weight of styrene, 20 parts by weight of naphthenic oil, 0.5 parts by weight of bulky hindered phenolic antioxidant, and 2 parts by weight o...

Embodiment 2

[0134] The foam double-sided adhesive tape provided by embodiment 2 is based on PU black foam (comprising an ultra-thin PET layer with a thickness of 10 μm compounded on one side) with a total thickness of 600 μm; A removable rubber pressure-sensitive adhesive layer with a thickness of 200 μm is attached; one side of the ultra-thin PET layer of the substrate is coated with an acrylic pressure-sensitive adhesive layer with a thickness of 50 μm; the other side of the acrylic pressure-sensitive adhesive layer is compounded with Double silicon glassine release material with a thickness of 110μm.

[0135] The removable rubber pressure-sensitive adhesive layer is prepared from the raw materials of the following components: 50 parts by weight of styrene-ethylene / propylene-styrene block copolymer (SEPS), 45 parts by weight of terpene resin, polystyrene 15 parts by weight of ether, 20 parts by weight of naphthenic oil, 1 part by weight of bulky hindered phenolic antioxidant, and 2 part...

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Abstract

The invention relates to a foam double-sided adhesive tape, which comprises: a release material, a first pressure-sensitive adhesive layer compounded on the release material, a foam layer compounded on the first pressure-sensitive adhesive layer, and a second pressure-sensitive adhesive layer compounded on the foam layer, wherein at least one of the first pressure-sensitive adhesive layer and thesecond pressure-sensitive adhesive layer is a removable pressure-sensitive adhesive layer, and the removable pressure-sensitive adhesive layer is prepared from the following raw materials in parts byweight: 40-60 parts of a thermoplastic elastomer, 40-60 parts of a tackifying resin, 10-20 parts of a reinforcing agent, 10-25 parts of a softener, 0.2-5 parts of an antioxidant, and 0.1-5 parts of afiller. The foam double-sided adhesive tape provided by the invention adopts a specific structure, realizes good interaction, has excellent bonding performance, excellent environment testing resistance, excellent shading performance, excellent buffer performance and excellent shearing resistance, has the tensile and removable easy-to-rework characteristic, and is particularly suitable for assembling a large-size liquid crystal display module.

Description

technical field [0001] The invention relates to the technical field of adhesive tape production, and more specifically relates to a foam double-sided adhesive tape and a manufacturing method thereof. Background technique [0002] Foam double-sided adhesive tape is a double-sided tape with foam as the base material and coated with the same or different types of pressure-sensitive adhesive on both sides. It has the characteristics of excellent sealing performance, good resilience, good cushioning performance, and strong adhesion. It is widely used in electrical appliances, instrumentation, automobile industry, battery industry and other fields. According to different materials, the foam includes various polymer foam materials such as PU foam, PE foam, PP foam, EVA foam, acrylic foam and silicone foam. [0003] In the field of large-scale liquid crystal display, foam double-sided adhesive is especially used in the bonding between liquid crystal display modules and backlight mo...

Claims

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Application Information

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IPC IPC(8): C09J7/26C09J7/29C09J7/38C09J153/02C09J11/08C09J11/04
CPCC09J7/26C09J7/29C09J7/385C09J7/387C09J153/02C09J153/025C09J11/08C09J11/04C09J2400/243C09J2475/006C09J2467/006C09J2453/00C09J2301/1242C09J2301/162C09J2301/302C08L45/00C08L25/06C08K3/04C08L71/12
Inventor 滕超王国伟李言潘扬扬
Owner 安徽屹珹新材料科技有限公司
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