Process for capillary dewatering of foam materials and foam mate

Details Process for capillary dewatering of foam materials and foam mate Process for capillary dewatering of foam materials and foam mate

1999-07-14

2000-12-12

Ferensic, Denise L.

Drying and gas or vapor contact with solids

Process

With contacting of material treated with solid or liquid agent

34399, 34400, 34422, 34 71, 34 953, 34111, 34659, 156 78, 516 21, 521 50, F26B 300

Patent

active

061581445

ABSTRACT:
This invention relates to a method and several exemplary apparatus for capillary dewatering of foam materials. The apparatus may include felt which is applied to an exposed face of the foam material, or a double felt arrangement applied to two opposed surfaces of the foam material. The apparatus may provide a temperature differential between the two exposed surfaces of the foam material. An alternative embodiment utilizes a roll having a capillary dewatering medium. The capillary dewatering medium may be maintained at a vacuum either above or below the breakthrough vacuum of the capillaries. The disclosed apparatus and method are particularly useful for dewatering foams having relatively fine open capillaries.

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