Accelerated extraction of rolled materials

Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...

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134 1, 134 10, 134 14, 134 15, 134 32, B08B 102, B08B 104, B08B 310, B08B 312

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054862361

ABSTRACT:
Undesired constituents are removed from rolled fabric or other rolled materials by: (a) placing a roll of the material containing the undesired constituents (soluble or particulate) in a cleaning chamber; (b) providing a structure for re-rolling the material within the chamber; (c) introducing into the cleaning chamber a cleaning fluid which is a dense phase fluid comprising a liquefied gas or a supercritical fluid and contacting the material containing the undesirable constituents with the cleaning fluid; and (d) exposing single layers of the material containing the undesirable constituents with the cleaning fluid for a period of time sufficient to remove the undesired constituents from the material.

REFERENCES:
patent: 3370982 (1968-02-01), Hayunga
patent: 3559301 (1971-02-01), Fraser
patent: 3615814 (1971-10-01), Ott et al.
patent: 3635762 (1972-01-01), Ott et al.
patent: 3737941 (1973-06-01), Miller et al.
patent: 4944837 (1990-07-01), Nishikawa et al.
patent: 5013366 (1991-05-01), Jackson et al.
patent: 5213619 (1993-05-01), Jackson et al.

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