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A highly filled fully biodegradable packaging material

A packaging material and biodegradable technology, applied in the field of fully biodegradable packaging materials, can solve the problems of non-degradable environment and pollution, and achieve the effects of simple preparation process, reduced production cost and low production cost

Inactive Publication Date: 2011-12-14
宋旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an environmentally friendly non-toxic green packaging material to solve the problem that traditional packaging materials cannot be degraded and cause environmental pollution. The inorganic filler of the packaging material can reach 70-90% of the weight. Highly filled fully biodegradable packaging materials with significantly reduced costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First select 7 kg of heavy calcium carbonate of 1500 mesh, dry at 100°C for 2 hours; stir and mix in a high-speed mixer, and add 0.2 kg of titanium-based coupling agent of zinc titanate, the temperature is 100°C, and mix for 10 minutes; then Add 3 kg of polybutylene succinate biodegradable polymer and 0.2 kg of ethylene glycol plasticizer and mix evenly, then extrude and granulate in a twin-screw (Φ35) extruder, and set the temperature of the extruder to At 150-200° C., with a rotating speed of 300 rpm, a packaging material is prepared.

[0024] According to the ASTM D5338-92 standard test method for aerobic biodegradation of plastics under controlled composting conditions, the results are as follows: a packaging film with a thickness of 0.02mm was prepared by blowing the film as the raw material in this example, and buried in the soil at room temperature for 60 Days later began to degrade, 7-9 months completely degraded.

Embodiment 2

[0026] Select 8 kg of heavy calcium carbonate of 2500 mesh, dry at 100°C for 2 hours; stir and mix in a high-speed mixer, and add 0.3 kg of titanium-based coupling agent of zinc titanate, the temperature is 100°C, and mix for 10 minutes; then add 2 kg of polybutylene succinate biodegradable polymer and 0.2 kg of ethylene glycol plasticizer are mixed evenly and then extruded and granulated in a twin-screw (Φ35) extruder. The temperature of the extruder is set at 150-200° C., with a rotating speed of 300 rpm, to obtain packaging materials.

[0027] According to the ASTM D5338-92 standard test method for aerobic biodegradation of plastics under controlled composting conditions, the results are as follows: A packaging film with a thickness of 0.02mm was prepared by blowing the film as the raw material of this example, and buried in soil at room temperature for 45 Days later began to degrade, 5-6 months completely degraded.

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Abstract

A highly-filled fully-biodegradable packaging material is obtained by mixing and extruding the following components on a weight basis: 70-90 parts of fillers, 10-30 parts of biodegradable polymer, 0.5-3 parts of coupling agents, and 2-5 parts of plasticizers. The fillers are dried at 100-200 DEG C to obtain a water content of not more than 0.5%; the coupling agent is mixed and stirred with the dried fillers according to a certain ratio in a high-speed mixing machine; the biodegradable polymer and the plasticizer are added proportionally, and well mixed; the mixture is extruded and granulated in an extruder to obtain a material for packaging; and the a material for packaging can be processed into various packaging materials by blow molding, injection molding, molding, and the like. When the packaging plastic of the invention becomes waste, the material can degrade into carbon dioxide, water and inorganic mineral in natural environment, which solves the problem of white pollution, and the material is a green and environment-friendly packaging material; the content of the inorganic filler is high, and reaches above 70%, which greatly decreases the production cost. The production cost is low; the preparation process is simple; and the economic practicality is strong.

Description

technical field [0001] The invention relates to packaging materials, in particular to a fully biodegradable packaging material mainly composed of inorganic powder. Background technique [0002] With the development of human economy and society, the demand for plastic packaging materials is increasing day by day, with an annual growth rate of 5%. Common types of plastics used as packaging materials include polyethylene, polypropylene, polyvinyl chloride, etc. With the extensive use of plastics, there have been two serious problems: on the one hand, most of the raw materials of the plastic industry come from petroleum. Natural gas resources are gradually reduced or even exhausted, and the plastic industry will face a shortage of raw materials; on the other hand, because plastics are not easy to decompose and recycle, they become "white pollution" that can be seen everywhere, destroying the ecological environment. Therefore, more and more people and countries advocate the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/16C08L67/02C08L67/04C08L3/02C08L29/04C08K13/06B65D65/46B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 宋旭季君晖邵壮王萍丽任中来张长安卢灿辉李昕忆姚妍
Owner 宋旭
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