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Foam double-sided tape and preparation method and application thereof

A technology of double-sided tape and foam, applied in the direction of adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problems of dust-free production environment pollution, residual glue pollution on the surface, and damage to parts, etc., to achieve Excellent resistance to shear force, good anti-warping resistance on curved surfaces, and mild conditions

Active Publication Date: 2019-07-12
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, if the foam double-sided adhesive tape in the prior art is used for bonding, the foam can only be peeled off from the front or cut from the middle with a knife from the side, which will easily cause damage to parts and may cause residual glue pollution. On the surface, the debris generated by cutting the foam will also cause great pollution to the dust-free production environment

Method used

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  • Foam double-sided tape and preparation method and application thereof

Examples

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preparation example Construction

[0073] 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:

[0074] A pressure-sensitive adhesive layer is pasted or coated on both sides of the base material to obtain a foam double-sided adhesive tape. In the present invention, the base material and the pressure-sensitive adhesive layer are the same as those described in the above technical solution, and will not be repeated here.

[0075] The present invention has no special restrictions on the lamination / coating process, and the technical scheme of lamination / coating well-known to those skilled in the art can be adopted; Sensitive adhesive layer, the present invention has no special limitation to this. In actual operation, the pressure-sensitive adhesive layer has a release film (paper); in the present invention, the release film (paper) on one of the pressure-sensitive adhesive layers is preferably peeled...

Embodiment 1

[0092] The foam double-sided adhesive tape provided in Example 1 is composed of a base material and pressure-sensitive adhesive layers respectively compounded on both sides of the base material; the thickness of the base material is 700 μm, and the thickness of the pressure-sensitive adhesive layer is 50 μm; The thickness of the foam double-sided tape is 800 μm.

[0093] The base material is PE-EVA blended black foam with composite glue on both sides to composite POE film; the thickness of the POE film is 30 μm; the tensile strength of the PE-EVA blended black foam is 2.1MPa , the elongation at break is 800%; the preparation method of the substrate is specifically:

[0094] Dilute the dry oil-based composite glue (Henkel LA3640 / LA6800) with a solvent to a suitable solid content and viscosity, and then coat the obtained composite glue solution on the POE film with a coating thickness of 10 μm. After drying, the film will be covered with One side of the composite glue is therma...

Embodiment 2

[0108] The foam double-sided adhesive tape provided in Example 2 is composed of a base material and pressure-sensitive adhesive layers respectively compounded on both sides of the base material; the thickness of the base material is 700 μm, and the thickness of the pressure-sensitive adhesive layer is 50 μm; The thickness of the foam double-sided tape is 800 μm.

[0109] The base material is PE-POE blended black foam with POE film on both sides; the thickness of the POE film is 30 μm; the tensile strength of the PE-POE blended black foam is 2MPa, and the elongation at break The ratio is 1000%; the POE film on both sides of the substrate is compounded with the PE-POE blended black foam by a co-extrusion method before the PE-POE blended black foam is foamed to obtain a double-sided Laminated foam substrate.

[0110] The pressure-sensitive adhesive layer is prepared from the following raw materials: 50 parts by weight of styrene-ethylene / propylene-styrene block copolymer (SEPS),...

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Abstract

The invention provides a foam double-sided tape and a preparation method and application thereof. The foam double-sided tape comprises a base material and a pressure sensitive adhesive layer compounded at two sides of the base material. The base material is a stretchable foam layer with at least a stretchable film compounded at one side thereof. Elongation at break of the stretchable film is greater than 300%, and tensile strength is greater than 10 MPa; elongation at break of the stretchable foam layer is greater than 300%, and tensile strength is greater than 1 MPa. Elongation at break of the pressure sensitive adhesive layer is 150-3000%, tensile strength is 1MPa-30MPa, and 180-degree peel strength is greater than 5N / 25mm. By the adoption of the functional layer with specific performance parameters, good interaction is realized under a specific structure, and the foam double-sided tape has excellent adhesion, excellent resistance to curved surface and warp, good buffer performance and excellent shear resistance, has high adhesion and die cutting performance to various surfaces of glass, PC, stainless steel, ABS, etc., can be removed tracelessly from various surfaces by simply stretching the whole tape, and is applicable to bonding and assembling of components of electronic products.

Description

technical field [0001] The invention relates to the technical field of adhesive tapes, and more specifically relates to a double-sided foam adhesive tape and its preparation method and application. Background technique [0002] Foam double-sided 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 excellent sealing performance, good filling performance, good cushioning performance, strong adhesion, and good stickiness. In the fields of electronic products such as liquid crystal displays, mobile phones, tablet computers, notebooks, etc., foam double-sided tape has a wide range of applications due to its excellent performance, especially suitable for bonding and fixing between different parts, such as liquid crystal display modules Group and backlight module bonding, bonding of liquid crystal frame, bonding of liquid crystal module and back shell, etc. [0003] At present, i...

Claims

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Application Information

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IPC IPC(8): C09J7/38C09J7/29C09J153/02C09J11/08C09J11/04
CPCC08L2205/035C09J11/04C09J11/08C09J153/02C09J2203/326C09J2453/00C09J7/29C09J7/381C09J2301/124C09J2301/16C09J2301/302C09J2301/408C08L45/00C08L25/06C08L91/00C08K3/04C08L71/12C08L57/02
Inventor 滕超王国伟李言张明汉
Owner 安徽屹珹新材料科技有限公司
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