Methods of bleaching jeans
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United States of America Patent
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-
Mar 29, 1994
Grant Date -
N/A
app pub date -
Feb 4, 1988
filing date -
Mar 13, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Jeans are bleached by rotating glass-expandable ceramics having a bulk specific gravity of 0.7 to 1.2, a 24 hour water absorption of not greater than 5% and the maximum diameter of not greater than 150 mm, water and jeans in a rotary tank. Further jeans are bleached by rotating an air-permeable ceramic porous material having a bulk specific gravity of 0.7 to 1.9, a 24 hour water absorption of 10 to 40% and the maximum diameter of not greater than 150 mm, water and jeans in a rotary tank. In this case, the air-permeable ceramic porous material may also be immersed in a bleaching agent solution.
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