Continuous process of making a gelled rubber foam product

Details Continuous process of making a gelled rubber foam product Continuous process of making a gelled rubber foam product

1987-06-17

1992-03-17

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264145, 264166, 264233, 264236, B29C 3502, B29C 3914, B29C 6720

Patent

active

050966413

ABSTRACT:
Foam rubber articles may be prepared by shaping foamed latex into the desired configuration and gelling it. The gelled latex may then be cut to the required thickness to provide articles such as cosmetic puffs. The shaping process may use a disposable mold such as a circular polymeric casting or the mold may be permanent, such as glass, passing through a gelling chamber. The process reduces waste for products which has previously been cut from slab foam.

REFERENCES:
patent: 3904558 (1975-09-01), Graham et al.
patent: 3961001 (1976-06-01), Bethe
patent: 4169172 (1979-09-01), Bethe
patent: 4214053 (1980-07-01), Porter
patent: 4479840 (1984-10-01), Takegawa et al.

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