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Gas barrier easy-demolding fully biodegradable beverage bottle production method

A gas barrier and production method technology, applied in the field of fully biodegradable beverage bottles, can solve the problems of harsh processing conditions, poor water vapor barrier properties, low heat distortion temperature, etc., and achieves optimized processing conditions, improved transparency, and good toughness. Effect

Active Publication Date: 2017-02-01
ZHEJIANG BILI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the PLA of 60%, the PBAT of 15%, 10%PCL, the PBSA of 11%, the chain extender bisoxazoline of 2%, the nucleating agent calcium stearate of 2% mixes, by twin-screw The extruder produces a masterbatch, which is blown into a completely degradable beverage bottle using an injection-blow level hollow blow molding machine. The inner layer of the bottle is sprayed with a layer of self-adhesive PVDC emulsion, and then dried by infrared. After 1-5 cycles of spraying, a fully biodegradable beverage bottle with excellent barrier properties is obtained. After testing, the oxygen transmission rate test data is 0.0032 (ml / pkg.day), the water vapor transmission test data is 0.0045 (ml / pkg.day), and the shelf life can reach more than 9 months. The bottle is under composting conditions. It can be degraded by more than 80% in about 15 months.

Embodiment 2

[0026] Embodiment 2: 40% PLA, 20% PBAT, 20% PCL, 13% PBS, 5% plasticizer acetyl tri-n-butyl citrate, 1% chain extender isocyanate, 1% nucleating The agent titanium dioxide is mixed evenly and passed through a twin-screw extruder to form a masterbatch. Using the masterbatch, it is blown into a completely degradable beverage bottle by using an injection-blow level hollow blow molding machine. The bottle uses amorphous carbon treatment technology to obtain a fully biodegradable beverage bottle with excellent barrier properties. Acetylene is excited by a microwave processor and converted into a plasma state. The particles in the plasma state are deposited on the wall to form a thin and dense uniform solid film of amorphous carbon. The thickness of the coating is 45nm, and the coating weight is only the bottle body. One ten thousandth of the weight. After testing, the oxygen transmission rate test data is 0.0063 (ml / pkg.day), the water vapor transmission test data is 0.0056 (ml / pk...

Embodiment 3

[0027] Embodiment 3: 60% PLA, 10% PBAT, 10% PHA, 14% PBS, 2% plasticizer dioctyl phthalate, 2% chain extender methyl epoxy chloropropane , 1% nucleating agent calcium stearate, 1% micro-foaming agent mixed evenly through a twin-screw extruder to form a masterbatch, using the masterbatch, blown into a fully degradable beverage using an injection blowing level hollow blow molding machine bottle. Using diamond-type carbon plasma coating technology, gaseous acetylene, methane, etc. are sent into fully biodegradable beverage bottles under vacuum conditions, and high-frequency current vacuum discharge is used to make ionic carbon and hydrogen phase on the inner surface of the bottle to form a diamond-like carbon Structured fine coating. The thickness of the coating is 25nm, and the coating weight is only one ten-thousandth of the weight of the bottle body. It is a fully biodegradable beverage bottle with excellent barrier properties. After testing, the oxygen transmission rate tes...

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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...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08K5/09C08K5/353C08K5/11C08K3/22C08K5/29C08K5/12C08K5/1515C08K5/098C08K3/26C08K3/38C08J7/04C08J7/06B65D1/02B29C49/42
CPCB29C49/4273B65D1/0207C08J7/0427C08J7/06C08J2367/04C08J2467/02C08J2467/04C08L67/04C08L2201/06C08L2205/02C08L2205/025C08L2205/035C08L67/02C08K5/09C08K5/353C08K5/11C08K2003/2241C08K5/29C08K5/12C08K5/1515C08K5/098C08K2003/262C08K2003/385Y02W90/10
Inventor 王彤范朝阳訚朝勇王作举汤传贵黄凯高震天
Owner ZHEJIANG BILI PACKAGING
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