Method to treat porous stones for use in distressing fabric usin

Details Method to treat porous stones for use in distressing fabric usin Method to treat porous stones for use in distressing fabric usin

1990-07-16

1992-12-15

Willis, Jr., Prince

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

134 34, 134 37, B08B 300

Patent

active

051713713

ABSTRACT:
This invention is directed to a method for improving the quality of pumice stones that are used to finish fabrics or garments with a distressed look. In this invention, the pumice stones are first injected with steam at a pressure above atmospheric pressure to remove dust and other particles, and to drive the air out of the pumice stone pores. The steam cleaned stones are impregnated with an oxidizing agent. The high pressure steam pretreatment enables the pumice stones to absorb the oxidizing agent solutions quickly and throughout the entire stone, resulting in an even and thorough penetration of the oxidizing agent solution in the pumice stones, which can then be used to distress fabrics and garments.

REFERENCES:
patent: 3752762 (1973-08-01), Cincotta
patent: 4575887 (1986-03-01), Viramontes
patent: 4740213 (1988-04-01), Ricci
patent: 4816033 (1989-03-01), Hoffer et al.
patent: 4850156 (1989-07-01), Bellaire
patent: 4919842 (1990-04-01), Dickson et al.

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