FOOD CASING WITH BARRIER PROPERTIES WITH REGARD TO OXYGEN AND/OR WATER VAPOUR, CAPABLE TO ABSORB AND PRESERVE FOOD ADDITIVE AND RELEASE IT INTO FOOD PRODUCT Russian patent published in 2013 - IPC A22C13/00 

FIELD: food industry.

SUBSTANCE: invention relates to food industry. Proposed is a multilayered seamless sleeve-shaped film for usage in the capacity of food product casing having barrier properties with regard to oxygen and/or water vapour, capable to absorb a food additive, accumulate it and release it onto the food product surface. The casing consists of an external layer, one or more intermediate functional layers and a functional internal layer. The layers are made of a thermoplastic polymer. The internal layer contains a network of interconnected cavities formed in the process of manufacture of the seamless sleeve-shaped film due to a porosity modifier addition. Additionally proposed is a method for manufacture and application of the seamless sleeve-shaped film.

EFFECT: group of inventions ensures quality transfer of colouring and flavouring substance contained inside the film onto the food product surface.

22 cl, 6 tbl, 4 ex