Degradable packing material for food

Abstract

The invention discloses a degradable packing material for food. The packing material comprises the following components in parts by weight: 100 parts of vegetable starch, 20-24 parts of konjak sol, 12-14 parts of bamboo fiber, 8-10 parts of ethylene-acrylic acid plastic, 6-8 parts of silicon oxide powder, 6-8 parts of dioctyl maleate, 3-5 parts of castor oil, 2-4 parts of glycerol, and 2-4 parts of a silane coupling agent, wherein length of the bamboo fiber is 4-6 mm; a preparation method of the konjak sol comprises the following steps: respectively weighing konjac glucomannan, carrageenan and soybean protein isolate; adding 10-12 g / L of konjac glucomannan, 18-22 g / L of carrageenan and 20-22 g / L of soybean protein isolate in water to be dissolved, stirring the mixture uniformly, standing and swelling for 3.5-4.5 hours to obtain the konjak sol.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a degradable food packaging material. Background technique [0002] At present, food packaging materials use polystyrene and other plastics as base materials. Because it is difficult to decompose in the natural environment, it will become waste accumulation after use and become one of the main pollution sources of urban production and living environment, which has attracted the attention of various countries. As oil resources become increasingly tense and scarce, petrochemical products that use oil as raw materials are severely affected. Among petrochemical products, plastic products are usually recycled by landfill or incineration due to their large quantity and non-degradable characteristics. This consumes a lot of energy and aggravates the re-pollution of the environment. The tens of thousands of tons of industrial plastic packaging and waste brought by industrial...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome this problem, Chinese invention patent application No. 93115669.6 disclosed the manufacturing method of plant synthetic food packaging film and the packaging produced by this method on November 9, 1994. The invention is to combine corn flour, glutinous rice Powder, quick-acting foaming powder and distilled water are placed in a container and stirred. After the above-mentioned mixture is foamed, a certain proportion of edible gelatin and glycerin are added and stirred. time, then take out the processed packaging film from the mold and soak it in a solution composed of paraffin, polyvinyl alcohol and water to become a usable food packaging box. The packaging produced by this invention can be processed into livestock feed or agricultural use after recycling Organic fertilizers, but the patent application has many production processes and it is difficult to improve efficiency