Dry-cleaning of garments using gas-jet agitation

Details Dry-cleaning of garments using gas-jet agitation Dry-cleaning of garments using gas-jet agitation

1996-05-28

1999-07-20

Warden, Jill

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

68183, 81491, 81492, 8158, 134 26, 134 255, 134 32, 134 42, 134 34, 34375, 34606, 34608, 34609, 34610, D06B 102

Patent

active

059251921

ABSTRACT:
Substantial amounts of particulate soils in garments can be removed by agitation in gas-jet in a solvent-free, low-pressure environment. The ability of the present gas-jet agitation system to remove particulate soils from garments and fabrics rivals that of conventional dry-cleaning processes which agitate the garments and fabrics while immersed in solvent. Thus, a dry-cleaning operation may consist of a solvent-immersion step for removing soluble soils and a gas-jet agitation step to remove particulates. Considerable savings in equipment and operating costs may be realized in the practice of the invention, since solvent flow rates need not be boosted to provide necessary agitation for particulate soil removal. The savings achievable by employing gas-jet agitation are even more pronounced in dense phase gas dry cleaning systems, which require pressurized environments to maintain a liquified solvent. Advantageously, the apparatus employed in the practice of the invention has no moving parts and is relatively inexpensive to fabricate and maintain. Further, the gas used as a means of agitation may be any commonly-available inexpensive gas, such as carbon dioxide, nitrogen, or air, so that the process is environmentally-friendly.

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