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Fibrous base web bonding system and method

  • US 5,063,104 A
  • Filed: 01/03/1990
  • Issued: 11/05/1991
  • Est. Priority Date: 01/03/1990
  • Status: Expired due to Term
First Claim
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1. A bonded porous fibrous sheet material for use in the manufacture of food casings and the like comprising a fibrous base web containing about 10% by weight and less of a bonding system comprising a first treatment of a thermoplastic film forming material effective for imparting high alkaline strength to the base web and a subsequent treatment of a film forming material and an insolubilizing agent for the film forming material, said subsequent treatment being effective to impart high wet strength and absorption to the first treated web without substantially reducing the alkaline strength thereof.

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