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Self-adhered air protection adhesive tape for automobile component and preparation method of self-adhered air protection adhesive tape

A technology for spare parts and gas protection, which is applied in the field of self-adhesive gas protection tape for auto parts and its preparation, can solve the problems of print marks and surface pollution of spare parts, and achieves the effects of suitable peeling strength, low cost and simple preparation method.

Inactive Publication Date: 2017-01-04
宁波卓胜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a self-adhesive gas protection tape for auto parts and its preparation method. question

Method used

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  • Self-adhered air protection adhesive tape for automobile component and preparation method of self-adhered air protection adhesive tape
  • Self-adhered air protection adhesive tape for automobile component and preparation method of self-adhered air protection adhesive tape
  • Self-adhered air protection adhesive tape for automobile component and preparation method of self-adhered air protection adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Substrate layer raw material: polypropylene. The density is 0.90g / cm 3 , the melting point is 167°C, and the melt index MI is 0.5g / 10min.

[0031] Intermediate layer raw material: ethylene-alpha olefin copolymer B with a density of 0.918g / cm 3 , the melt index MI is 0.2g / 10min, and the melting point is 121°C.

[0032] Adhesive layer raw material: ethylene-vinyl acetate copolymer with a VA content of 5% and a density of 0.935g / cm 3 , the melt index MI is 3g / 10min, and the melting point is 60°C; the density of ethylene-α-olefin copolymer A is 0.870g / cm 3 , the melt index MI is 1g / 10min, and the melting point is 40°C. The ethylene-α-olefin copolymer A content was 40%.

[0033]Antioxidant: 0.1% of the total mass of the middle layer, diphenylamine and didodecyl alcohol ester at a mass ratio of 4:1.

[0034] Light stabilizer: 0.2% of the total mass of the middle layer, phenyl o-hydroxybenzoate.

[0035] Preparation methods include:

[0036] The raw materials of the ad...

Embodiment 2

[0039] Substrate layer raw material: polypropylene. The density is 0.91g / cm 3 , the melting point is 168°C, and the melt index MI is 1g / 10min.

[0040] Intermediate layer raw material: ethylene-alpha olefin copolymer B with a density of 0.925g / cm 3 , the melt index MI is 1.0g / 10min, and the melting point is 124°C.

[0041] Adhesive layer raw material: ethylene-vinyl acetate copolymer with VA content of 20%, density of 0.942g / cm 3 , the melt index MI is 15g / 10min, and the melting point is 70°C; the density of ethylene-α-olefin copolymer A is 0.893g / cm 3 , the melt index MI is 6g / 10min, and the melting point is 50°C. The content of ethylene-alpha olefin copolymer A is 50%.

[0042] Antioxidant: 0.5% of the total mass of the middle layer, p-phenylenediamine and trioctyl in a mass ratio of 2:1.

[0043] Light stabilizer: 0.5% of the total mass of the middle layer, tris(1,2,2,6,6-pentamethylpiperidinyl) phosphite.

[0044] Preparation methods include:

[0045] The raw mater...

Embodiment 3

[0048] Substrate layer raw material: polypropylene. The density is 0.90g / cm 3 , the melting point is 170°C, and the melt index MI is 2g / 10min.

[0049] Middle layer raw material: ethylene-alpha olefin copolymer B with a density of 0.935g / cm 3 , the melt index MI is 1.9g / 10min, and the melting point is 127°C.

[0050] Adhesive layer raw material: ethylene-vinyl acetate copolymer with a VA content of 45% and a density of 0.947g / cm 3 , the melt index MI is 30g / 10min, and the melting point is 87°C; the density of ethylene-α-olefin copolymer A is 0.915g / cm 3 , the melt index MI is 10g / 10min, and the melting point is 60°C. The ethylene-α-olefin copolymer A content was 60%.

[0051] Antioxidant: 0.3% of the total mass of the middle layer, 2,6-di-tert-butyl-4-methylphenol and diester of thiodipropionate in a mass ratio of 3:1.

[0052] Light stabilizer: 1% of the total mass of the middle layer, 2-(2-hydroxy-3,5-di-tert-phenyl)-5-chlorinated benzotriazole.

[0053] Preparation m...

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Abstract

The invention relates to a self-adhered air protection adhesive tape for an automobile component and a preparation method of the self-adhered air protection adhesive tape. The self-adhered air protection adhesive tape comprises a base material layer, a middle layer and an adhesive layer, wherein the base material layer is made of polypropylene; the middle layer is made of an ethylene-alpha-olefin copolymer B; the adhesive layer is made of one or two of an ethylene-vinyl acetate copolymer and an ethylene-alpha-olefin copolymer A. The preparation method comprises the following steps: supplying raw materials of the adhesive layer, the middle layer and the base material layer to a mold head through three runners respectively, performing composite curtain coating on the adhesive layer, the middle layer and the base material layer so as to form a film through the mold head, and performing cooling molding and cutting, thereby obtaining the self-adhered air protection adhesive tape for the automobile component. The self-adhered air protection adhesive tape is appropriate in peeling resistance, simple in preparation method, low in cost and good in application prospect, and the situations that the adhesive tape is hard to peel off as the peeling resistance is upgraded as times goes on and adhesives are retained on surfaces of components and parts due to pressure impact in the rolling and stamping process can be avoided.

Description

technical field [0001] The invention belongs to the field of surface protection of auto parts, in particular to a self-adhesive gas protection tape for auto parts and a preparation method thereof. Background technique [0002] The production and preparation process of auto parts involves rolling, stamping, die-cutting, washing, etching, etc. As a part of the whole vehicle, spare parts products are required to be free from scratches, wear, watermarks, fog, dust and other defects on the product surface during the manufacturing process. At present, in the domestic conventional production process, ordinary PE and CPP are generally used as the base material to form a film by coating acrylic resin adhesive as a protection, which is attached to the surface of the product to prevent damage to the product surface during the process. [0003] As a protective tape, it is required that the surface protection tape has a suitable peel strength. On the one hand, it needs to maintain the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J123/08B32B27/08B32B27/32B32B27/30B32B27/20B32B7/06
CPCB32B7/06B32B27/08B32B27/20B32B27/306B32B27/32B32B2250/02B32B2250/24B32B2405/00B32B2605/08C09J123/0853C09J2203/306C09J2301/16C09J2301/312C09J2301/41
Inventor 方振华任忠平叶建彭
Owner 宁波卓胜新材料有限公司
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