Packing materials of starch-polypropylene foam, an preparation method

Abstract

A biological foam degradable packing material of starch and polypropylene is made of starch, polypropylene, paramonotoluene sulfuryl semicarbazide, sodium benzoate, 2,5-dimethyl-2,5-ditert butyl peroxyhexane or diisopropylbenzene peroxide, fatty glyceride and isopentene or carbon dioxide. The preparing process includes mixing materials, heating, extruding, rolling and setting.

Description

technical field

[0001] The invention relates to an easily degradable food packaging and industrial product packaging material, in particular to a biodegradable food packaging and industrial product packaging material. Background technique

[0002] In order to gradually eliminate the white pollution caused by polystyrene foam packaging materials, some packaging materials have been changed to polyethylene foam packaging materials. Polyethylene foam plastics can be degraded when exposed to air (under the action of light, heat, and oxygen), but The degradation rate is much lower than that of polypropylene foam. However, whether it is polyethylene or polypropylene, they are difficult to biodegrade, that is to say, they cannot be degraded by deep burial, which is a difficult problem for domestic waste disposal. For this reason, Chinese patent CN1354197 uses starch, polypropylene and polyethylene as main ingredients to mix and make packaging materials, wherein starch can be biodeg...