Food packaging antifogging film and surface printing process thereof

Abstract

The invention discloses a food packaging anti-fog film and a surface printing process thereof, and relates to the technical field of food packaging plastic film surface printing. An anti-fog film for food packaging comprises a printing base film with an anti-fog effect, an ink layer is printed on one side of the printing base film in the thickness direction, and a protective coating for preventing color ink from migrating is coated on the printing base film on the same side as the ink layer and covers the ink layer; the invention discloses a food packaging anti-fog film surface printing process. The method comprises the following steps: S1, forming a printing base film; s2, printing an ink layer; s3, coating a protective coating; s4, rolling a film, and placing at room temperature for a certain time; and S5, carrying out an anti-fog test. The food packaging anti-fog film has the effects of ensuring the anti-fog effect of the food packaging anti-fog film, saving the production cost of an enterprise and improving the use effect of a finished product of the food packaging anti-fog film.

Description

technical field [0001] The present application relates to the technical field of food packaging plastic film surface printing, in particular to a food packaging anti-fog film and its surface printing process. Background technique [0002] In the process of fresh food production, storage, cold chain transportation and refrigerated sales, plastic containers are usually used to form airtight containers with printed covers to seal the products; due to the temperature difference between the products in the airtight container and the external environment, the water vapor in the container On the inner surface of the printing cover film, it condenses into tiny water droplets, making the printing cover film appear foggy, causing "ghosting" phenomenon, which seriously affects the appearance of the product. Therefore, printed lidding films for such packaging forms generally require anti-fog properties. [0003] At present, the cover film manufacturing industry usually uses a co-extrus...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that in the state of film roll, the ink pattern of the printed cover film is in direct contact with the heat-sealing film heat cover, and there will inevitably be a small amount of small molecule additives precipitated in the ink of the ink pattern, and the precipitates will be destroyed. The surface tension of the hot cover of the heat-sealing film will destroy the anti-fog function of the printed cover film and affect the use effect of the printed cover film. There is room for improvement

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