Electret preservative film and preservative bag

Abstract

The invention discloses an electret preservative film and a preservative bag, which are designed to overcome the problems that current preservative films and preservative bags are poor in antibacterial and bacteriostatic performances and poor in preserving effect. The electret preservative film and preservative bag provided by the invention use polytetrafluoroethylene or ethylene-tetrafluoroethylene copolymer plastic which is processed and refined to prepare thin film material. Electrets technical treatment is performed by an electret corona process or breakdown method. The microporous diameter of the preservative film material is ranged from 0.1 micron to 0.5 micron and the thickness thereof is arranged from 15 microns to 80 microns. Electret preservative films and preservative bags in different specifications are prepared. The invention has the advantages of antibacterial and bacteriostatic performances, enzyme activity reducing performance, waterproof and dustproof performance, good air permeability, long preserving time and high preserving degree. The electret preservative film further has the advantages of resisting acid, alkali and high temperature, is not corroded and dissolved in solvents such as water and alcohol and has stable performance, reliable safety performance and is not poisonous and harmless. The invention is novel food preservative film and bag which are the updated products of current preservative film and bag and suitable for use in preserving food in shopping malls, hotels and homes.

Description

technical field [0001] The invention discloses a food product, specifically a food fresh-keeping film and a fresh-keeping bag made of an electret material, belonging to the field of fresh-keeping materials. Background technique [0002] In commercial operations and daily life, many foods need to be kept fresh during storage, transportation, and sales. The chemical methods currently used for preservation have pollution problems, and the use of physical cooling methods for preservation has high costs and high costs. 2. Although fresh-keeping bags have the characteristics of convenient use and low cost, they also have poor air permeability, do not have sterilizing and antibacterial effects, are easily polluted, and have a short fresh-keeping time, which is easy to deteriorate and rot. Contents of the invention [0003] The invention discloses an electret fresh-keeping film and a fresh-keeping bag, which have the functions of sterilization and antibacterial, dustproof and wate...

AI Technical Summary

Problems solved by technology

[0002] In commercial operations and daily life, many foods need to be kept fresh during storage, transportation, and sales. The chemical methods currently used for preservation have pollution problems, and the use of physical cooling methods for preservation has high costs and high costs. 1. Although the fresh-keeping bag has the characteristics of convenient use and low cost, it also has the problems of poor air permeability, no sterilization and antibacterial effect, easy to be polluted, short fresh-keeping time, and easy to deteriorate and rot.

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