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Degradable self-adhesive film material as well as preparation method and application thereof

A self-adhesive, self-adhesive layer technology, applied in the direction of adhesives, wax adhesives, adhesive types, etc., can solve the problems of pollution, difficult to recycle, and the shape is not fixed.

Active Publication Date: 2021-03-23
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the annual consumption of self-adhesive protective films in the world is about several million tons, but all existing self-adhesive protective films in the market including PE are non-degradable polymer materials. The material is thinner, the shape is not fixed, it is rarely used repeatedly, and it is difficult to recycle
The extensive use of plastic protective films and the lack of follow-up treatment have led to increasing waste and pollution of protective films. Protective films are already playing the role of an environmental killer

Method used

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  • Degradable self-adhesive film material as well as preparation method and application thereof
  • Degradable self-adhesive film material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Add the raw materials for the preparation of the surface layer of the self-adhesive film into a high-speed mixer and mix them thoroughly. After mixing evenly, transfer them to a twin-screw extruder for melt extrusion and granulation to obtain a modified material for the surface layer. The modified material for the surface layer is extruded and granulated The screw temperature is 180-210° C., and the screw speed is 350 rpm.

[0061] Add the raw materials for the preparation of the self-adhesive film and self-adhesive layer into a high-speed mixer and mix them thoroughly. The temperature of the screw is 180-200°C and the rotational speed of the screw is 300rpm when extruding and granulating the raw material.

[0062] The self-adhesive film is processed by a two-layer co-extrusion blown film machine. According to the film thickness ratio, the surface layer modifier is added to the surface layer hopper, and the self-adhesive layer modifier is added to the self-adhesive laye...

Embodiment 2

[0080] The degradable self-adhesive film was prepared according to the film thickness and process method of Example 1, the difference lies in the raw material composition of the surface layer of the self-adhesive film and the self-adhesive layer.

[0081] The parts by weight of each component of self-adhesive film surface layer are as follows:

[0082]PLA (from Nature Works, model: 4032D, MI=7g / 10min 210°C, 2.16kg): 31.1 parts

[0083] PBAT (from Tunhe, Lanshan, model: TH801T, MI=4g / 10min 190°C, 2.16kg): 67 parts

[0084] Erucamide: 0.5 parts

[0085] Compatibilizer PLA-g-MAH (MI is 8.2g / 10min, 2.16kg at 190°C): 1 part

[0086] Chain extender (from BASF ADR 4370F, France, with 9 epoxy functional groups): 0.1 parts

[0087] Antioxidant 1010: 0.1 parts

[0088] Antioxidant 168: 0.2 parts.

[0089] The parts by weight of each component of the self-adhesive film self-adhesive layer are as follows:

[0090] PLA (from Nature Works, model: 4032D, MI=7g / 10min 210°C, 2.16kg): 29....

Embodiment 3

[0098] The degradable self-adhesive film was prepared according to the film thickness and process method of Example 1, the difference lies in the raw material composition of the surface layer of the self-adhesive film and the self-adhesive layer.

[0099] The parts by weight of each component of self-adhesive film surface layer are as follows:

[0100] PLA (from Nature Works, model: 4043D, MI=16g / 10min 210°C, 2.16kg): 35 parts

[0101] PBS (from Tunhe, Lanshan, model: TH803S, MI=18g / 10min 190°C, 2.16kg): 63.1 parts

[0102] Oleic acid amide: 0.5 parts

[0103] Compatibilizer PLA-g-MAH (MI is 6.5g / 10min, 190°C 2.16kg): 1 part

[0104] Chain extender (from BASF ADR 4468, France, with 5 epoxy functional groups): 0.1 parts

[0105] Antioxidant 1010: 0.1 parts

[0106] Antioxidant 168: 0.2 parts.

[0107] The parts by weight of each component of the self-adhesive film self-adhesive layer are as follows:

[0108] PLA (from Nature Works, model: 4043D, MI=16g / 10min 210°C, 2.16kg...

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Abstract

The invention discloses a degradable self-adhesive film material as well as a preparation method and application thereof. The degradable self-adhesive film material is formed by compounding a surfacelayer and a self-adhesive layer, and preparation raw materials of the surface layer and the self-adhesive layer contain degradable resin. The self-adhesive film prepared by the method is good in adhesion effect with the surface of an adherend, strong in adhesive force, free of residual glue and easy to peel off, and the surface layer and the self-adhesive layer are not easy to adhere; good mechanical performance is achieved, and the tensile strength and the elongation at break are high; and the material has good biodegradability, avoids environmental pollution, is processed by a two-layer co-extrusion film blowing machine, and is simple in process and convenient for industrial popularization.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a degradable self-adhesive film material and its preparation method and application. Background technique [0002] With the rise of the domestic e-commerce industry, the logistics and transportation industry is booming. In order to prevent surface scratches during transportation, most products are covered with a layer of plastic protective film. The protective film can be divided into metal product protective film and plastic product protection according to the purpose. Film, car protective film, food protective film, etc., which are widely used in various fields such as home appliances, hardware products, food, glass, chemical industry, etc., for packaging, storage and transportation of various products, in order to protect the product surface from scratches At the same time, it also has the advantages of waterproof, dustproof, and good visual appearance. [0003] D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/30C09J7/25C09J167/04C09J151/08C09J153/02C09J191/06C09J157/02C09J145/00C09J193/04C09J11/06
CPCC09J7/30C09J7/255C09J167/04C09J11/06C08L2205/035C09J2467/006C08L2201/06C08L51/08C08L53/025C08L91/06C08L57/02C08K5/1345C08K5/526C08L45/00C08L93/04
Inventor 李成浪李方
Owner 联泓(江苏)新材料研究院有限公司
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