Heat-shrinkable degradable environment-friendly film material as well as preparation method and application method

Abstract

The invention provides a heat-shrinkable degradable environment-friendly film material which is prepared by blending and modifying PBAT and PLA in proportion under the action of auxiliaries, wherein the auxiliaries comprise wax, a coupling agent, a chain extender, an anti-blocking agent and a slipping agent. According to the invention, the PBAT material with good biodegradability, biocompatibility and high elongation at break and the PLA material with high hardness, high transparency and low elongation rate are modified and mixed under the action of the auxiliaries to obtain the biodegradable compostable environment-friendly film material with thermal shrinkage performance. The process and equipment for preparing the environment-friendly film material are simple, and are very suitable for large-scale industrial production. The heat-shrinkable degradable environment-friendly film material can be used to prepare a packaging film with good blow molding effect, good thermal shrinkage, good stiffness and good toughness, and can also be applied to packaging films, industrial materials and the like.

Description

technical field [0001] The invention relates to the technical field of degradable environmental protection materials, in particular to a heat-shrinkable degradable environmental protection film material, a preparation method and an application method. Background technique [0002] At present, with the attention of human beings to the environment and the implementation of the global ban on plastics, degradable packaging films are the hottest packaging materials in the market, and are gradually replacing non-degradable plastic films, and put forward more functional requirements for degradable films. Especially for the requirements of heat shrinkable packaging and shrinkable labels, etc., there are functional deficiencies in single materials such as PBAT, PLA, PBS, PPC, etc. Make performance improvements. [0003] Traditional non-degradable heat-shrinkable films are often used in the packaging of tableware, and the large amount of use will cause environmental pollution; while ...

AI Technical Summary

Problems solved by technology

[0003] Traditional non-degradable heat-shrinkable films are often used in the packaging of tableware, and the large amount of use will cause environmental pollution; while some degradable heat-shrinkable films have low shrinkage rates and cannot achieve the effect of traditional non-degradable heat-shrinkable films. It is necessary to increase the water vapor to achieve the effect of heat shrinkable packaging during application, which will increase the cost of equipment research and development, operation, maintenance, and use, which is not conducive to the widespread use of enterprises

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