Fruit and vegetable preservative film and preparation method and application thereof

Abstract

The invention relates to the field of preservative films, and particularly discloses a fruit and vegetable preservative film and a preparation method and application thereof. The fruit and vegetable preservative film is prepared from the following raw materials, by weight: 50 parts of polyethylene, 40-120 parts of white oil, 1-10 parts of sodium polyacrylate, 3-12 parts of degradable master batch, 0.5-3 parts of zeolite, 0.3-2.5 parts of quartz stone and 0.5-3 parts of nano titanium dioxide. The preparation method of the fruit and vegetable preservative film comprises the steps of raw material mixing, melt extrusion, film formation through blowing, cooling, soaping and the like. The fruit and vegetable preservative film can be used for wrapping a single fresh pear. According to the fruit and vegetable preservative film and the preparation method thereof, through mutual compatibility of the polyethylene, the white oil, the sodium polyacrylate and other components, the fresh-keeping effect of the fruit and vegetable preservative film on fruits and vegetables can be improved, and the storage time of the fruits and vegetables is prolonged; and meanwhile, the single fresh pear is wrapped in the preservative film, so that the purposes of ventilation and preservation of the fresh pear are achieved, the moisture loss of the fresh pear is reduced, and the storage time of the fresh pear and the holding time of the crispness of the fresh pear are prolonged.

Description

Technical field [0001] This application relates to the field of plastic wrap, and more specifically, it involves a fruit and vegetable film and its preparation method and application. Background technique [0002] After the fruit picking, it is basically 3-7 days before the warehouse enters the market, and it takes 3-7 days before the arrival of the consumer. Some even have a month. During this period, it is necessary to carry out wholesale circulation, cold chain. The interruption is broken, resulting in decline in the freshness of fruit, loss of water, shortening the shelf life of fresh fruit, and decline in economic value. The circulation process requires preservation, where plastic wrap is a way to use the fruits and vegetable wrapped locks, which is more common and convenient. In this way, fruit and vegetable plastic film plays an important role. [0003] At present, in the relevant technique, the fruit and vegetable filming film is prepared by the use of polyethylene as a s...

AI Technical Summary

Problems solved by technology

[0002] After the fruit is picked, it will be stored in cold storage. It will take 3-7 days before it goes out of the warehouse and enters the market for circulation to reach consumers. Some even take as long as a month. There will be interruptions, resulting in a decrease in the freshness of the fruit, water loss, a shortened shelf life of fresh fruit, and a decline in economic value