Method for producing fibrous sheet

Details Method for producing fibrous sheet Method for producing fibrous sheet

1979-04-16

1981-01-20

Chin, Peter

Paper making and fiber liberation

Processes and products

Plural fiber containing

162152, 162157R, 162164R, 162166, 162168R, 162169, 162175, 162183, D21H 512, D21H 342

Patent

active

042460662

ABSTRACT:
A fibrous sheet having a high strength and water resistance and having no resin specks on the surface can be produced by producing a sheet from a fiber slury by the known paper making process, to said fiber slurry being added a flocculate of chlorinated polymer latices which has a particle size of 100.mu.-500 .mu. and is prepared by heating said chlorinated polymer latices to a temperature of at least their minimum film-forming temperature and then adding a water soluble cationic polymer or a polyvalent metal salt with stirring. Examples of said chlorinated polymer latices are anionic polyvinyl chloride latex, polyvinylidene chloride latex or the combination thereof.

REFERENCES:
patent: 3766002 (1973-10-01), Grief et al.
patent: 3776812 (1973-12-01), Jongettes
patent: 3937648 (1976-02-01), Huebner et al.

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