Preparation method of adhesive tape

A tape and heat-sensitive adhesive technology, applied in the direction of adhesives, sustainable manufacturing/processing, film/sheet adhesives, etc., can solve the problem of inability to protect the process, low product yield, affecting product appearance and yield, etc. problem, achieve the effect of increasing the package and protection area, avoiding scratches or damage, and reducing the difficulty of the process

Active Publication Date: 2017-03-15
宁波启合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, due to the hard substrate PET, the PET protective film cannot be applied well to the corners and arcs, and cannot effectively protect the process; while the PE protective film, PVC protective film, and OPP protective film have soft substrates, but Due to the pressure sensitivity of the adhesive layer, the corners and radians cannot be perfectly applied during the application process, resulting in residual air bubbles. After a series of processing and peeling off the protective film, there will be residual air bubbles, which will affect the appearance and yield of the product.
Taking the case of an Apple mobile phone as an example, the general protective film cannot be completely wrapped due to too many corners and radians during the processing of the inner side of the case, resulting in a low product yield.

Method used

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  • Preparation method of adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of adhesive tape, carry out according to the following steps:

[0029] 1) Preparation of pressure-sensitive adhesive: 50 parts of alkyl methacrylate, 2 parts of hydroxyl-containing methacrylate copolymer and 30 parts of tackifying resin are used as solvents in toluene and ethyl acetate to react to form a solid The slurry with a content of 45% is added to the stirring device, and then 1.5 parts of isocyanate curing agent is added, dissolved and stirred into a uniform and stable viscous liquid to form an acrylic pressure-sensitive adhesive liquid with a solid content of 45%.

[0030] 2) Preparation of heat-sensitive adhesive: respectively dissolve 45 parts of rubber elastomer and 55 parts of tackifying resin to form a slurry with a solid content of 50%, add it to the stirring device, and then add 2 parts of softener and 5 parts of antioxidant , dissolved and stirred into a uniform and stable viscous liquid. Specifically, the rubber elastomer ...

Embodiment 2

[0034] 1) Preparation of pressure-sensitive adhesive: 75 parts of alkyl methacrylate, 1.2 parts of hydroxyl-containing methacrylate copolymer and 40 parts of tackifying resin are used as solvents in toluene and ethyl acetate to react to form a solid The slurry with a content of 50% is added to the stirring device, and then 2 parts of isocyanate curing agent is added, dissolved and stirred into a uniform and stable viscous liquid to form an acrylic pressure-sensitive adhesive liquid with a solid content of 50%.

[0035] 2) Preparation of heat-sensitive adhesive: respectively dissolve 50 parts of rubber elastomer and 60 parts of tackifying resin to form a slurry with a solid content of 50%, add it to the stirring device, and then add 1 part of softener and 10 parts of antioxidant , dissolved and stirred into a uniform and stable viscous liquid. Specifically, the rubber elastic body is a styrene-butadiene-styrene block copolymer, the tackifying resin is a rosin resin, the softeni...

Embodiment 3

[0039]1) Preparation of pressure-sensitive adhesive: 90 parts of alkyl methacrylate, 0.2 part of hydroxyl-containing methacrylate copolymer and 35 parts of tackifying resin are used as solvents in toluene and ethyl acetate to react to form a solid The slurry with a content of 45% is added to the stirring device, and then 3 parts of isocyanate curing agent is added, dissolved and stirred into a uniform and stable viscous liquid to form an acrylic pressure-sensitive adhesive liquid with a solid content of 45%.

[0040] 2) Preparation of heat-sensitive adhesive: respectively dissolve 40 parts of rubber elastomer and 50 parts of tackifying resin to form a slurry with a solid content of 50%, add it to the stirring device, and then add 5 parts of softener and 1 part of antioxidant , dissolved and stirred into a uniform and stable viscous liquid. Specifically, the rubber elastomer is a styrene-butadiene-styrene block copolymer, the tackifying resin is a terpene resin, the softener is...

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PUM

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Abstract

The invention provides a preparation method of adhesive tape. The preparation method is characterized by comprising the following steps that a first release film is coated with a thermosenstive adhesive, and drying is conducted to form a release film layer and a thermosensitive adhesive layer; a second release film is coated with the thermosensitive adhesive to form a pressure-sensitive adhesive layer fit with the second release film, drying is conducted, and a base material and the pressure-sensitive adhesive layer are fit; the second release film is stripped from the pressure-sensitive adhesive layer and fit with the thermosensitive adhesive layer, and the adhesive tape on which the release film layer, the thermosensitive adhesive layer, the pressure-sensitive adhesive layer and the base material layer are sequentially fit is formed. According to the preparation method, the adhesive tape which can reduce bubbles or marks generated when a shell is wrapped can be obtained, the manufacture procedure protection effect is improved, and the problem that adhesive residues exist after the thermosensitive adhesive layer is fit through heating and stripped through cooling is avoided.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of adhesives, in particular to a preparation method of an adhesive tape for process protection. [0003] 【Background technique】 [0004] With the rapid development of electronic products, the all-metal integrated body is one of the most popular elements at present. The all-metal integrated fuselage undergoes a series of surface treatments during processing, such as polishing, electroplating, spraying, etching, laser and a series of complicated processes. These processes necessarily require a material for process protection to avoid scratches and damage to other non-processed parts. [0005] At present, protective films such as PET protective film, PE protective film, PVC protective film, and OPP protective film are generally used to protect the non-processed parts. However, due to the hard substrate PET, the PET protective film cannot be applied well to the corners and arcs, and cannot effectively protect th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J4/02C09J4/06C09J145/00C09J193/04C09J125/16C09J153/02C09J191/06C09J11/06C09J11/08
CPCC09J4/06C09J7/22C09J7/35C09J7/38C09J7/40C09J11/06C09J11/08C09J125/16C09J145/00C09J193/04C08L2205/03C08L53/02C08L91/06C08K5/13C08L53/025C08K5/1345Y02P20/10
Inventor 邵新萍
Owner 宁波启合新材料科技有限公司
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