The Dexter Corporation

Diane M Robertson

Ludmila Byalik

Ronald H Pomeroy

Patrick G Fay

Alan W Meierhoefer

A porous fibrous sheet material for use in the manufacture of food casings and the like is pressed prior to bonding and is bonded with about 10% by weight or less of a non-viscose bonding agent. The pressed and bonded material can be used to form casings having characteristics of thinness and elasticity similar to the thinness and elasticity of viscose-bonded casings, without the environmental problems associated therewith. The non-viscose bonding agent will result in significantly less shrinkage in the base web than results from viscose bonding.

Bonded fibrous casing substrates and method of making same

A bonded fibrous sheet material for use in the manufacture of food casings having fibrous base web containing a 10% weight or less bonding system and the bonding system having a composition which includes polyvinyl alcohol (degree of hydrolysis of greater than 95%).

Bonded fibrous sheet material

A bonded porous sheet material for use in the manufacture of food casing, said material being produced by treating a fibrous web with a thermoplastic film forming material which bonds the fibers of the web and imparts high alkaline strength to the treated wet and subsequently treating the bonded fiber web with a solution of film forming material and an insolubilizing agent for the film forming material.

Fibrous base web bonding system and method

A new bonding agent for fibrous substrates used to reinforce food casing is formulated by dissolving cellulose carbamate and an alkaline curing resin in a dilute caustic solution in such a manner that the ratio of carbamate to resin is greater than 1:1 by weight. The preferred resin is a polymeric reaction product of epichlorohydrin and a polyamide. The bonded substrate contains up to 10% by weight of the bonding agent and exhibits a porosity that is not significantly less than that of the base web and a caustic tensile strength greater than 300 grams per 25 millimeters. Casings made from the substrate can use the casing films employed heretofore or a carbamate-resin film formulation.

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West Suffield, CT, United States of America

Diane M Robertson