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
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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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