Cleaning of polyurethane foam reservoir

Details Cleaning of polyurethane foam reservoir Cleaning of polyurethane foam reservoir

1987-07-10

1989-04-25

Pal, Asok

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 11, 134 12, 134 251, 134 254, 134 39, 134 40, 134135, B08B 900

Patent

active

048244872

ABSTRACT:
A process and apparatus (10) are provided for cleaning foam parts used as reservoirs in ink-jet cartridges. Apparatus used in cleaning clean room garments is modified to enable cleaning of thousands of foam parts in a batch mode. The modification includes provided a temperature sensor (60) to ensure that only solvent is distilled over, but not non-volatile residues, and a level sensor (62) to determine if the liquid level in the still (36) is too low and therby reduce power to the heating element (38).

REFERENCES:
patent: 3460990 (1969-08-01), Barclay
patent: 4209344 (1980-06-01), Simon et al.

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