FIELD: food products, manufacturing techniques.
SUBSTANCE: polymer hose casing for sausages, hot dog sausages, small sausages, processed cheeses and so on is produced. It comprises close lenticular cavities looking like fibers and in appearance it is similar to fibrous protein and cellulose sausage casings. The method implies extrusion of the hose with outer layer of polymer composition based on aliphatic polyamide which contains coarse phase of hydrophilic polymer plasticised by liquid plasticiser and following biaxial orientation and thermofixation. The boiling temperature of the plasticiser is lower than the temperature of the melt at the extruder delivery end. Outer layer can be the only one. The one-layer casing can be used for packing products subject to smoking.
EFFECT: invention allows minimising tearings of casing during orientation stretching, increasing productivity of extruding line and reducing casing cost.
20 cl, 13 ex, 3 tbl
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