Apparatus and method for impregnating a dry fiber batt

Details Apparatus and method for impregnating a dry fiber batt Apparatus and method for impregnating a dry fiber batt

1979-03-28

1980-11-04

Coe, Philip R.

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Combined liquid and gas or vapor

81493, 68 5E, 68158, D06B 508, D06B 2100, D06B 2318

Patent

active

042311292

ABSTRACT:
A method and apparatus for impregnation of a dry fabric is disclosed including a purging device which is provided immediately upstream of a supply of liquid within an impregnation tank. The purging device urges a condensable gas through the dry fabric immediately prior to entry of the fabric into the liquid with the purging device providing a pressure differential across the fabric. The fabric is preferably conveyed by a first endless conveyor belt through a passageway of the purging device and subsequently into the impregnating liquid and beneath a first squeeze roller. The purging device displaces the non-condensable gas or air within the fabric with a condensable gas preferably steam.

REFERENCES:
patent: 1410256 (1922-03-01), Johnson et al.
patent: 2539947 (1951-01-01), De Klerk
patent: 3291639 (1966-12-01), Flowers et al.
patent: 3730678 (1973-05-01), Wedler et al.
patent: 3838968 (1974-10-01), Fleissner
patent: 4136535 (1979-01-01), Audas

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