Preparation of fibrous reinforced sausage-type casings from organic solvent soluble polyvinyl alcohol resins
Abstract
Abstract A NOVEL FIBROUS CASING FOR PACKAGING SAUSAGES AND SIMILAR PRODUCTS COMPRISES A SATURATING TISSUE IMPREGNATED WITH A CONTINUOUS FILM OF AN INSOLUBILIZED, FILM-FORMING POLYVINYL ALCOHOL RESIN. THE CASING IS PREFERABLY PREPARED BY IMPREGNATING A SUITABLE SATURATING TISSUE WITH AN ORGANIC SOLVENT SOLUTION OF A POLYVINYL ALCOHOL RESIN AND THEN INSOLUBILIZING THE RESIN AS A FILM ON THE TISSUE, E.G., BY CONTACT WITH A COAGULATION (ACID, SALT, OR NON-SOLVENT LIQUID) BATH, BY EVAPORATION OF THE SOLVENT, ETC. FURTHER INSOLUBILIZATION OF THE RESIN FILM MAY BE EFFECTED BY REACTING THE RESIN WITH A SUITABLE CROSS-LINKING AGENT, VIZ FORMALDEHYDE. RESIN IMPREGNATED-SATURATING TISSUE MAY BE FOMRED DIRECTLY INTO A TUBULAR CASING OR INITIALLY MAY BE PRODUCED AS A SHEET WHICH IS SLIT TO APPROPRIATE WIDTH AND THEN FORMED INTO A TUBULAR CASING IN A SEPARATE SEAMING OPERATION. CASINGS ARE PREFERABLY FORMED USING LONG FIBER HEMP PAPERS AS THE SATURATING TISSUES AND USING ORGANIC SOLVENT SOLUBLE, FILM-FORMING POLYVINYL C ALCOHOL RESINS HAVING A HYDROXYL GROUP D.S. OF AT LEAST 20%, E.G., IN THE RANGE OF FROM ABOUT 25% TO ABOUT 99.99%.
Inventors
- 👤 Seymour Oppenheimer
- 👤 Albin F Turbak
Bibliographic Details
Claims Analysis
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