BACTERICIDAL SLEEVE-LIKE SAUSAGE MEMBRANE Russian patent published in 2003 - IPC

FIELD: food industry. SUBSTANCE: innovation deals with manufacturing food products formed out of paste-like or viscous-flow state and subjected for thermal treatment, for which considerable quality value is possibility for prolonged storage in membrane without any deterioration in consumers' properties. Sleeve-like three-layer sausage membrane consists of polyamide material layer, external layer including water-soluble film-forming polymers, and internal one. Polyamide material layer is designed out of the mixture of synthetic polyamids at addition of unsaturated ethylene hydrocarbons and aromatic carboxylic diacids, external layer contains antimicrobial substances with highly pronounced fungicidal properties. Polyamide material layer is designed out of polyamide 6 at different viscosity at total quantity of 82-85 weight portions, polyamide copolymer 6/66 at the quantity of 4-8 weight portions, amorphous polyamide resin of polyamide 6 at the quantity of 1-3 weight portions, polyethyleneterephthalate at the quantity of 1-2 weight portions, polybuthylene terephthalate at the quantity of 1-2 weight portions and polyethylene - 0.1-0.5 weight portions. In polyamide material layer all polyamides of different viscosity degree should be selected in a certain ratio. Polyamide material layer should be designed in the form of biaxially-oriented thermostabilized sleeve. Said layer is supplemented with a dyeing pigment. As water-soluble film-forming polymer in membrane's external layer one should used aqueous solution of reserve polysaccharide. As chemical substances with highly pronounced fungicidal properties in membrane's internal layer it is necessary to apply aqueous solution of mixture containing sodium salt of dehydracetic acid, NaCl, sodium benzoate, water, the balance. Mentioned chemical substances could be applied onto internal layer either as aqueous solution or in solid state as finely divided powder. Sausage membrane designed according to the present innovation is strong at high temperatures, as well. It has high elasticity, it is soft to the touch. The membrane has low water-, vapor- and oxygen-permeability, possesses bactericidal properties that establishes high safety degree of membrane-inserted product. It is able to corrugate into stable half-finished article. EFFECT: higher efficiency. 10 cl