Quenched nylon multilayer casings

A - Human Necessities – 22 – C

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99/14, 99/89, 99

A22C 13/00 (2006.01)

Patent

CA 1230514

QUENCHED NYLON MULTILAYER CASINGS Abstract of the Disclosure An exact fit tubular food casing for pressurized filling is provided that comprises a tubular polymeric laminate having an outer layer of crystallized and moisturized nylon and an interior moisture barrier layer. In one advantageous mode, the nylon is heat crystallized from a substantially amorphous state and simultaneously moisturized. Associated method and apparatus for making said casing are also provided. In use, the casing is stuffed to within its elastic limit so that radial deformation is uniform along the length of the tubular casing. As the exposed nylon dries out, the casing shrinks, thus further elastically stretching tightly over the stuffed food roll contained therein. This contraction on dryout yields, in effect, an apparent increase in the elasticity of the casing.

429195

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