Fruit and vegetable modified atmosphere packaging film

Abstract

The invention discloses a fruit and vegetable modified atmosphere packaging film. The film consists of the following components in parts by weight: 100 parts of polyethylene resin, 20-24 parts of poly-4-methyl-1-amylene, 30-34 parts of polyvinyl acetate, 4-6 parts of zinc stearate, 3-5 parts of calcium stearate, 5-7 parts of heavy calcium carbonate, 4-6 parts of diatomite powder, 3-5 parts of activated carbon powder, 6-8 parts of isopropyl dimethacrylate, 1.5-2.5 parts of 3,5-di-tert-butyl-4-hydroxy phenylpropionic octadecyl ester and 2-4 parts of liquid paraffin.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a modified atmosphere packaging film for fruits and vegetables. Background technique [0002] Spontaneous modified atmosphere preservation of fruits and vegetables uses a film with a certain degree of air permeability to pack the harvested fruits and vegetables. It relies on the metabolism of the fruits and vegetables to reduce the oxygen concentration in the packaging bag and maintain a certain carbon dioxide concentration and humidity in the bag, thereby extending the freshness period. The currently commonly used plastic wraps are polyethylene and polyvinyl chloride films, which have obvious effects on the modified atmosphere preservation of most fruits and vegetables. However, the physiological characteristics of each fruit and vegetable after harvest are different. For fruits and vegetables with high respiration intensity or prone to carbon dioxide damage, such a...

AI Technical Summary

Problems solved by technology

However, the commonly used polyethylene and polyvinyl chloride cling films cannot meet these requirements. For fruits and vegetables with high ethylene release, the method of placing ethylene absorbent in ordinary fresh-keeping bags is generally adopted, which increases the process, labor and cost.