FIELD: food industry. SUBSTANCE: by the present innovation, suture-free tubular coating is formed in surface ratio to be within 1:2 1:10 due to extrusion-blowing out forming, manufactured out of thermoplastic mixture. The latter includes a) thermoplastic starch and/or thermoplastic amyloproduct and b) at least, one another polymer chosen out of the group consisting of homo- or copolymers with the links of hydroxycarboxylic acid, polyetherurethan (with simple ether blocks), polyvinylacetate and polyalkylene carbonate of -[CHR1-CHR2-O-CO-O)n, formula, where R1 and R2 separately indicate hydrogen atom or (C1-C4) alkyl residue, and n the entire number from 10 to 5000, moreover, weighing ratio of a) : b) is within 90:10 10:90. Thermoplastic mixture can, moreover, contain a plasticizer, a softening agent, fibers, fillers and/or joining agent. This coating is especially useful as artificial coating for sausage products. It is mainly made out of natural raw materials and those of plant origin, moreover, being biologically destructible or, at least, composted. EFFECT: higher efficiency. 11 cl, 4 ex _
