A kind of co-extrusion coated protective tape and preparation method thereof

A technology of protective tape and cloth type, which is applied in the field of co-extrusion coated protective tape and its preparation, can solve the problems of surface pollution and marks of spare parts, and achieve the effects of low cost, appropriate peel strength and good application prospects

Active Publication Date: 2019-10-29
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 co-extrusion coating type protective tape and its preparation method, which overcomes the technical problem of pollution or imprints on the surface of spare parts due to small unevenness or residual glue

Method used

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  • A kind of co-extrusion coated protective tape and preparation method thereof
  • A kind of co-extrusion coated protective tape and preparation method thereof
  • A kind of co-extrusion coated protective tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Raw materials for the substrate layer: polypropylene and linear low-density polyethylene, wherein the mass percentage of polypropylene is 30%. Linear low density polyethylene has a density of 0.918g / cm 3 , Melt index (MI) 0.1g / 10min, melting point is 121°C. The density of polypropylene resin is 0.90g / cm 3 , the melting point is 167°C, and the melt index (MI) is 0.5g / 10min.

[0035] Adhesive layer raw material: ethylene-vinyl acetate copolymer. The VA content is 5%. The density is 0.935g / cm 3 , the melt index (MI) is 3g / 10min, and the melting point is 60°C.

[0036] Adhesive layer raw materials: 100 parts by mass of natural rubber, 40 parts of liquid natural rubber, 5 parts of naphthenic oil, 1 part of paraffin, and 50 parts of acetone.

[0037] Antioxidant: 0.1% of the total mass of the raw materials of the substrate layer, diphenylamine and didodecyl alcohol ester at a mass ratio of 4:1.

[0038] Light stabilizer: 0.2% of the total mass of raw materials for the ...

Embodiment 2

[0045] Raw materials for the substrate layer: polypropylene and linear low-density polyethylene, wherein the mass percentage of polypropylene is 50%. Linear low density polyethylene has a density of 0.921g / cm 3 , Melt index (MI) 0.5g / 10min, melting point is 124°C. The density of polypropylene resin is 0.91g / cm 3 , the melting point is 168°C, and the melt index (MI) is 1g / 10min.

[0046] Adhesive layer raw material: ethylene-vinyl acetate copolymer. The VA content is 10%. The density is 0.940g / cm 3 , the melt index (MI) is 6g / 10min, and the melting point is 70°C.

[0047] Adhesive layer raw materials: 100 parts by mass of natural rubber, 40 parts of liquid natural rubber, 5 parts of naphthenic oil, 1 part of paraffin, and 50 parts of acetone.

[0048] Antioxidant: p-phenylenediamine and trioctyl ester with a mass ratio of 0.5% of the total mass of raw materials for the substrate layer at 2:1.

[0049] Light stabilizer: tris(1,2,2,6,6-pentamethylpiperidinyl) phosphite, 0....

Embodiment 3

[0056] Raw materials for the substrate layer: polypropylene and linear low-density polyethylene, wherein the mass percentage of polypropylene is 70%. Linear low density polyethylene has a density of 0.935g / cm 3 , Melt index (MI) 1.8g / 10min, melting point 126°C. The density of polypropylene resin is 0.90g / cm 3 , the melting point is 170°C, and the melt index (MI) is 2g / 10min.

[0057] Adhesive layer raw material: ethylene-vinyl acetate copolymer. The VA content is 15%. The density is 0.947g / cm 3 , the melt index (MI) is 10g / 10min, and the melting point is 85°C.

[0058] Adhesive layer raw materials: 100 parts by mass of butadiene rubber, 50 parts of liquid butadiene rubber, 15 parts of naphthenic oil, 5 parts of paraffin, and 100 parts of tetrahydrofuran.

[0059] Antioxidant: 0.3% of the total mass of raw materials for the substrate layer, 2,6-di-tert-butyl-4-methylphenol and diester thiodipropionate in a mass ratio of 3:1.

[0060] Light stabilizer: 1% of the total mas...

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Abstract

The invention relates to a coextruded coating-type protection adhesive tape and a preparation method thereof. The coextruded coating-type protection adhesive tape comprises a substrate layer, an adhesion layer and a bonding layer, the substrate layer is composed of polypropylene and linear low-density polyethylene, the adhesion layer is vinyl-ethylene acetate copolymer, and the bonding layer comprises rubber and tackifying resin. The preparation method includes: (1), supplying raw materials of the adhesion layer and the substrate layer to a mould head respectively through two material ways, performing compositing, casting, film forming on the raw materials of the adhesion layer and the substrate layer through the mould head, and cooling and shaping to obtain a mother substrate; (2), diluting coating liquid, coating the coating liquid on the mother substrate to form the bonding layer, and folding and cutting into needed size. The coextruded coating-type protection adhesive tape is proper in stripping strength, free of being difficult to strip due to increasing of the stripping strength as time goes and free of causing adhesive residue on the surfaces of parts due to pressure impact in the process of rolling and punching. The preparation method is simple and low in cost and has good application prospect.

Description

technical field [0001] The invention belongs to the field of surface protection of auto parts, in particular to a co-extrusion coating type protective tape 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 adhesive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C08L23/12C08L23/08C08K5/18C08K5/134C08K5/13C08K5/3475C09J107/00C09J11/08C09J109/00
CPCC08L23/0853C08L23/12C08L2201/08C08L2205/02C09J11/08C09J107/00C09J109/00C09J2301/122C09J2301/41C09J2301/414C09J2407/00C09J2409/00C09J2423/046C09J2423/106C08K5/18C08K5/1345C08L7/00C08L91/06C08L91/00C08L9/00C09J2431/006
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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