Coating processes – Foraminous product produced – Filter – sponge – or foam
Patent
1979-12-21
1982-08-24
Lawrence, Evan K.
Coating processes
Foraminous product produced
Filter, sponge, or foam
427373, 427381, 428290, B05D 500
Patent
active
043461271
ABSTRACT:
A process is disclosed for preparing an absorbing mop material comprising a substratum of non-woven fibres and a flexible, porous, polymeric binder. The process comprises preparing a non-woven web of textile fibres, consisting essentially of a cellulosic material, preparing an aqueous dispersion containing a thermocoagulable polymer and a coagulating agent, adding to the aqueous dispersion a liquid expanding agent having a boiling point of 30.degree. C. to 80.degree. C., impregnating the web with the aqueous dispersion to which the expanding agent has been added, subjecting the impregnated web to a heat treatment at 40.degree. C. to 90.degree. C., washing the web with water, and subjecting the web to a further heat treatment at a temperature equal to or greater than 100.degree. C.
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Massa Vincenzo
Ruvolo Antonio
Lawrence Evan K.
Montedison S.p.A.
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