Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more ethylenic polymers having a functional moiety selected from the group of esters, anhydrides, and carboxylic acids, and a coextrusion...http://www.google.es/patents/US5698279?utm_source=gb-gplus-sharePatente US5698279 - Heat shrinkable nylon food casing having a functionalized ethylenic polymer core layer
Heat shrinkable nylon food casing having a functionalized ethylenic polymer ...
