Fibrous bonded sheet material

Details Fibrous bonded sheet material Fibrous bonded sheet material

1993-12-21

1995-08-08

Zirker, Daniel R.

Tobacco

Smoke separator or treater

Having a polymer

131365, 131331, 4285375, A24B 1528, B32B 2906

Patent

active

054390109

ABSTRACT:
A fibrous bonded sheet material, suitable for conversion into plug wrap for the filter plug in a filter cigarette, is formed by treating a fibrous base web with a polymeric binder (e.g. polyvinyl alcohol), a wet-strength resin (e.g. a polyamide-polyamine-epichlorohydrin resin) and a ketene dimer (e.g. an alkyl ketene dimer). The wet-strength resin may be wholly or partially replaced with a cross-linking agent (e.g. glyoxal). The resultant sheet material exhibits favourable characteristics of air permeability with resistance to the bleedthrough of adhesives used in the production of wrapped filter plug material.

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patent: 4614546 (1986-09-01), Schroer et al.
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