CASING FOR FOOD PRODUCTS, HAVING ROUGH SURFACE WITH NATURAL APPEARANCE, METHOD FOR PRODUCING OF SUCH CASING AND USING THE SAME Russian patent published in 2007 - IPC A22C13/00 

FIELD: food-processing industry, in particular, manufacture of single-layer or multiple-layer casings for food products such as cooked sausages.

SUBSTANCE: casing consists of thermoplastic mixture containing at least one aliphatic polyamide and/or copolyamide, at least one inorganic and/or organic filler. Casing surface is made rough, with maximal roughness height R_max, determined according to DIN 4768, making from 6 to 60 micron, and arithmetic mean deflection R_a of roughness profile making from 1.2 to 10 micron. Vapor-permeability of casing with average thickness of 100 micron, determined according to DIN 53122, is less than 50 g/m²/day. Method for producing of casing involves using spout having circular nozzle; performing molding, followed by blowing, or providing biaxial orienting during drawing.

EFFECT: provision for producing of synthetic casing for food products, having matte surface and quite natural structure of surface.

23 cl, 3 tbl, 2 ex