Tubular cellulosic casing with cationic thermosetting resin coating Patent #: 3935320
ApplicationNo. 05/963452 filed on 11/24/1978
US Classes:162/164.3, Epoxy containing reactant138/118.1, Casing162/164.6, Nitrogen containing162/175, Carbohydrate162/177Cellulose derivative (e.g., cellulose ester)
ExaminersPrimary: Smith, William F.
Attorney, Agent or Firm
International ClassesA22C 13/00 (20060101)
D21H 17/00 (20060101)
D21H 17/55 (20060101)
D21H 17/56 (20060101)
D21H 17/26 (20060101)
AbstractFibrous paper webs of high water absorbency and improved alkaline wet tensile strength are obtained by treating the fibers prior to web formation or subsequent to web formation with aqueous solutions of a water-soluble thermosetting reaction product of a polyamide and an epichlorohydrin, a water-soluble nonviscose film-forming material such as hydroxy ethyl cellulose and a water-soluble polyethylene imine. The resultant absorbent sheet material maintains its absorbency upon aging, exhibits high wet caustic strength and can be used in the manufacture of tea bags or food casings.
Field of SearchCellulose derivative (e.g., cellulose ester)