Degradable adhesive tape and preparation method thereof

A technology for adhesive tape and preparation steps, which is applied in the field of degradable adhesive tape and its preparation, can solve the problems of non-environmental protection of adhesive tape, and achieve the effect of reducing white pollution

Active Publication Date: 2021-11-12
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The degradable adhesive tape of the present invention has the advantages of being environmentally friendly and degradable, can effectively reduce white pollution, and solves the problem that the existing adhesive tape used in the express delivery industry is not environmentally friendly

Method used

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  • Degradable adhesive tape and preparation method thereof
  • Degradable adhesive tape and preparation method thereof
  • Degradable adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of degradable adhesive tape, as follows:

[0042] 68 parts by weight of PBAT, 23 parts of PLA, 2 parts of plasticizer epoxy soybean oil, 0.5 part of lubricant stearic acid, 0.1 part of coupling agent titanate, twin-screw extrusion granulation at 165-175 ° C, 170 ℃ single-screw extrusion blown film, inflation ratio 4.0, draw ratio 30. The film is biaxially stretched. Stretching setting temperature is controlled at 60-70°C for longitudinal setting and 100-110°C for transverse setting.

[0043] At the same time, weigh a certain amount of dichlorodiphenyl sulfone, place it in a 1L round-bottomed flask, add polyethylene glycol 400 in an equimolar amount of hydroxyl and dichlorodiphenyl sulfone, use thionyl chloride as a solvent, and xylene As a water-carrying agent, it was distilled in an oil bath at 160°C for 12 hours, and the product was precipitated in anhydrous ether. It was dissolved in N’N-dimethylformamide and purified by ether reprecipitation....

Embodiment 2

[0054] A preparation method of degradable adhesive tape, as follows:

[0055] 60 parts by weight of PBAT, 35 parts of PLA, 3 parts of plasticizer epoxy soybean oil, 0.8 part of lubricant stearic acid, 0.2 part of coupling agent titanate, twin-screw extrusion granulation at 170-180 ° C, 190 ℃ single-screw extrusion blown film, inflation ratio 4.5, draw ratio 33. The film is biaxially stretched. Stretching setting temperature is controlled at 65-70°C for longitudinal setting and 100-110°C for transverse setting.

[0056] At the same time, weigh a certain amount of dichlorodiphenyl sulfone, place it in a 1L round bottom flask, add polyethylene glycol 200 in an equimolar amount of hydroxyl and dichlorodiphenyl sulfone, use thionyl chloride as a solvent, and xylene As a water-carrying agent, it was distilled in an oil bath at 140°C for 10 hours, and the product was precipitated in anhydrous ether. It was dissolved in N’N-dimethylformamide and purified by ether reprecipitation. ...

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Abstract

The invention discloses a degradable adhesive tape and a preparation method thereof. The degradable adhesive tape comprises a base film layer, a release layer and an adhesive layer, two surfaces of the base film layer are respectively coated with a release layer and an adhesive layer; the base film layer is formed by stretching PBAT or a PBAT / PLA blend; the release layer is prepared from a raw material containing silicone oil; and the adhesive layer is synthesized by polyethylene glycol and dichlorodiphenyl sulfone. The degradable adhesive tape can be applied to the fields of express delivery, logistics, carton sealing and the like, has the advantages of being environmentally friendly, degradable, waterproof, moisture-proof, high in strength and toughness and the like, and solves the problems that in the existing express delivery industry, common BOPP adhesive tapes and cartons are not easy to detach, and white pollution is caused.

Description

technical field [0001] The invention belongs to the field of packaging auxiliary material manufacturing, and in particular relates to a degradable adhesive tape and a preparation method thereof. Background technique [0002] Adhesive tape is composed of base film and adhesive, which connects two unconnected items by bonding. Tape has a wide range of uses. According to its use, it can be divided into electrical insulation tape, high temperature resistant tape, protective film tape, sealing tape, carpet tape, etc. [0003] At present, a large number of sealing tapes are used in the express delivery industry. Most of the tape base film materials are BOPP or PVC, and most of the adhesives are acrylic or ethylene-vinyl acetate copolymer adhesives. However, both the base film material and the adhesive material are synthetic non-degradable materials. During their large-scale use, they are not easy to separate from the cartons, making it difficult to recycle the cartons. At the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/40C09J7/30C09J171/02C08L67/02C08L67/04C08L91/00C08J5/18C09D183/07C09D183/05
CPCC09J7/255C09J7/401C09J7/30C09J171/02C08J5/18C09D183/04C08J2367/02C08J2467/04C08J2491/00C09J2301/122C09J2483/005C09J2471/00C09J2467/006C08L83/04Y02W90/10
Inventor 黄爱宾
Owner HANGZHOU DIANZI UNIV
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