Production method of fully biodegradable beverage bottle with gas barrier and easy demoulding

Abstract

The invention provides a gas barrier easy-demolding fully biodegradable beverage bottle production method which includes the steps: raw material modification: adding plastic additives into fully biodegradable materials, mixing the plastic additives and the fully biodegradable materials according to a certain proportion, and performing granulation for the mixture; processing plastic master batches: uniformly mixing the mixture, and processing the mixture into the plastic master batches; blowing bottles; performing surface treatment of the bottles. The plastic additives are at least one in chain extenders, nucleating agents, plasticizers and plastic expansion microspheres, the fully biodegradable materials include powder biodegradable materials which are at least four in PLA (polylactic acid), PBS (poly butylene succinate), PHA (polyhydroxyalkanoate), PBSA poly(butylene succinate adipate), PBAT (poly butylene adipate-co-terephthalate) and starch, and blowing bottles include blowing the bottles by extrusion and blowing the bottles by injection molding.

Description

technical field [0001] The invention relates to a production method of a fully biodegradable beverage bottle with gas barrier and easy demoulding. Background technique [0002] With the improvement of the income level of Chinese residents, the continuous growth of beverage production and consumption has become possible, and the traditional beverage market will also undergo certain changes. The changes in the beverage market will drive the rapid development of the beverage packaging market, bringing beverage packaging to the market. With opportunities comes competition and challenges. At present, the main packaging methods of beverage packaging are glass bottles, metal cans (tinplate cans, pop cans), plastic bottles, paper-plastic-aluminum composite packaging materials, etc. Glass bottles are fragile, poor in secondary processing performance, and overweight, which brings a lot of inconvenience during transportation, and the transportation cost is high, so it is often not acc...

AI Technical Summary

Problems solved by technology

[0004] Although biodegradable plastics have the incomparable advantages of other plastics - biodegradability, they also have their own shortcomings that are difficult to overcome, such as poor thermal stability, harsh processing conditions, low heat distortion temperature, Poor toughness, poor barrier to oxygen, carbon dioxide, water vapor, etc.