Coating cloth for food packaging

Abstract

The invention provides coating cloth for food packaging. The coating cloth is composed of artificial viscose and a styrene-acrylic coating, wherein the surface of the artificial viscose is coated with the styrene-acrylic coating; the styrene-acrylic coating is prepared from 10 to 50 weight percent of acrylic emulsion A, 50 to 90 weight percent of acrylic emulsion B, 1 to 5 weight percent of a thickening agent, 0.1 to 0.5 weight percent of an organic silicon defoaming agent and 0.1 to 1 weight percent of palm wax emulsion. The water-based styrene-acrylic emulsion coats the surface of the artificial viscose by glue; the problems that the artificial viscose is large in surface porosity and cannot achieve the effects of oil resistance, water resistance and the like are solved; meanwhile, the coating cloth has relatively good water resistance and oil resistance effects and can be used for packaging meat products such as sausages; and the applied styrene-acrylic emulsion is water-based emulsion and is free of pollution, and the artificial viscose can be recycled, so that the environmental protection problem of existing meat product food packages is solved while the good use performance is guaranteed.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a coated cloth for food packaging. Background technique [0002] Sausage is a kind of meat product loved by consumers, which has the characteristics of convenient and fast food, nutritious and delicious, and long shelf life. In my country, sausages account for about 17% of the meat market share; in the world, meat products account for more than 45% of meat consumption, and the meat consumption ratio in developed countries has reached more than 70%. If it reaches the world average level, the scale of meat products will increase by more than 1.2 trillion. Therefore, my country's meat industry still has a lot of room for development, and the market size will become larger and larger, and the variety will also increase. For the packaging industry, this is also a key development direction worthy of attention. [0003] At present, the materials used for packaging meat product...

AI Technical Summary

Problems solved by technology

[0003] At present, the materials used for packaging meat products such as sausages on the market are generally plastic films, and there are two representative ones. One is the structure of BOPP (biaxially oriented polypropylene) plus PVDC (polyvinylidene chloride) coating composite PE. The composite film made of (polyethylene), the second is a single-layer film formed directly by blown film from PVDC masterbatch. These two types of packaging materials have the characteristics of good gas barrier and water barrier effect, but they are difficult to degrade and do not meet the current requirements. Environmental protection concept of green development, and PVDC film cannot be recycled, it will pollute the environment when incinerated, and produce a strong pungent smell

For example: the Chinese patent application number 200810080145.1 discloses a preparation method of a three-layer plastic composite film for packaging food. The disclosed material for packaging food is polypropylene film sprayed with polyvinyl alcohol coating, and then laminated with polyethylene film. The plastic packaging products made of this kind of food have good oil resistance and moisture-proof effects when used for packaging sausages, bacon and other foods, but this kind of plastic packaging products is extremely unfriendly to the environment, cannot be degraded, and is not friendly to the environment.

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