Ammonia processing of fabrics-effective removal of residual ammo

Details Ammonia processing of fabrics-effective removal of residual ammo Ammonia processing of fabrics-effective removal of residual ammo

1976-06-14

1978-07-11

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

8 85A, 8116R, 81491, 81492, 68 5C, D06M 102, D06M 100

Patent

active

040999114

ABSTRACT:
The disclosure relates to equipment and techniques for the removal from fabrics of excess residual ammonia, remaining in the fabric after liquid ammonia processing. The process involves contacting the opposed surfaces of the fabric with a thin film of water, followed by removal of the water from the fabric. The amount of water which contacts the fabric is insufficient to wet the fabric, so that it does not require a subsequent drying step, but is sufficient to release most of the residual ammonia, causing the ammonia to be extracted from the fabric. To advantage, the thin film of water is achieved by condensation of steam on chilled rollers.

REFERENCES:
patent: 3406006 (1968-10-01), Lindberg
patent: 3915632 (1975-10-01), Troope
patent: 3942948 (1976-03-01), Dalle
patent: 3980429 (1976-09-01), Lawrence et al.

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