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Water-dispersible sheet and cigarette using the same

  • US 5,849,153 A
  • Filed: 07/30/1996
  • Issued: 12/15/1998
  • Est. Priority Date: 08/09/1995
  • Status: Expired due to Term
First Claim
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1. A water-dispersible sheet, comprising:

  • (1) a water-resolvable base paper made from fibrous raw materials containing water-dispersible fibers selected from wood pulp fibers and non-wood plant fibers, wherein said water dispersible fibers have fiber dimensions of a l/D value of 0.50 or lower and a L/D value of 60 or lower and a water retention value of 95% or lower at a time before heating, and(2) a water-dispersible coating layer formed on the surface of at least one side of said base paper, which comprises;

    water-soluble polymer which is a polymer that turns to a film by drying to reduce the air-permeability of the sheet, which is selected from the group consisting of starch, starch derivatives, cellulose derivatives, polysaccharides, synthetic polymers, plant mucilage, microbial mucilage and protein, andan alkaline compound which is selected from the group consisting of hydroxides of alkali metals, carbonates and hydrogen carbonates of alkali metals, phosphates and hydrogenphosphates of alkali metals, hydroxides of alkaline earth metals and amines,wherein a blend ratio of the water soluble polymer to the alkaline compound in a coating mixture is from 100;

    1 to 100;

    10,000 and wherein a coating amount of the water-soluble polymer is from 0.01 to 10 gm2.

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