Fruit and vegetable fresh-keeping film and preparation method thereof

Abstract

The invention discloses a fruit and vegetable fresh-keeping film and a preparation method thereof. The fruit and vegetable fresh-keeping film is prepared from the following raw materials in parts by weight: 70 to 85 parts of modified polyethylene resin, 10 to 12 parts of anti-fogging master batches, 30 to 45 parts of ethylene-vinyl acetate resin, 5 to 8 parts of an antistatic agent, 3 to 4 parts of an antioxigent and 2 to 3 parts of paraffin wax. The preparation method of the fruit and vegetable fresh-keeping film comprises: taking the modified polyethylene resin, the anti-fogging master batches, the ethylene-vinyl acetate resin, the antistatic agent, the antioxidant and the paraffin wax according to the ratio above, melting, mixing, extruding, cooling, drying and dicing through an extruding or extruding and blow molding process, and then carrying out film blowing to obtain the fruit and vegetable fresh-keeping film.

Description

Technical field [0001] The invention relates to the field of films, in particular to a fruit and vegetable fresh-keeping film and a preparation method thereof. Background technique [0002] At present, polypropylene films for packaging fruits and vegetables on the market are susceptible to drastic changes in temperature and humidity, and evaporation (emission) of moisture contained in the packaged goods, and it is easy to form fog (water droplets) on the surface of the film. , It will affect the appearance of the packaging and then the value of the product, and the falling water droplets will cause the fresh fruits and vegetables to change color and even rot. With the advancement of science and technology, the requirements for fresh-keeping film for fruits and vegetables are getting higher and higher, and various new types of fresh-keeping film are constantly appearing. Summary of the invention [0003] The purpose of the present invention is to provide a fresh-keeping film for f...

AI Technical Summary

Problems solved by technology

[0002] At present, the polypropylene film used for fruit and vegetable packaging in the market is susceptible to drastic changes in temperature and humidity and the evaporation (emission) of moisture contained in the packaged items, and it is easy to form fog (water droplets) on the surface of the film. , will affect the appearance of the packaging and then affect the value of the product, and the falling water droplets will cause discoloration and even rot of fresh fruits and vegetables