Process for the production of chemically bonded non-woven sheet

Details Process for the production of chemically bonded non-woven sheet Process for the production of chemically bonded non-woven sheet

1982-04-26

1983-08-09

Lusignan, Michael R.

Coating processes

Foraminous product produced

Microporous coating

427246, 4273899, 4273934, 427381, 428904, B05D 500

Patent

active

043978924

ABSTRACT:
A process for the production of chemically bonded non-woven material, such as synthetic leather, is disclosed wherein a fiber fleece is impregnated with a heat sensitized polymer dispersion and the composition is destabilized to form a porous gel structure. Finally, the polymer is crosslinked at below 150.degree. C. and is dehydrated. Additionally, cut fibers of polyester of polyamide are formed into a fleece and an aqueous dispersion of butadiene-styrene coagulant and a curing composition is impregnated through the fleece. The binder is gelled and cured in superheated steam. The products obtained are soft and possess excellent physical and mechanical properties as well as superior dynamic stressability.

REFERENCES:
patent: 3887730 (1975-06-01), Rainer et al.
patent: 3928704 (1975-12-01), Heidingsfeld et al.
patent: 4002783 (1977-01-01), Fleissner
patent: 4143198 (1979-03-01), Sinn et al.
patent: 4176108 (1979-11-01), Caimi et al.
patent: 4208485 (1980-06-01), Nahta

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