Leather tanning process
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United States of America Patent
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Mar 12, 1991
Issued Date -
N/A
app pub date -
Jul 9, 1990
filing date -
Dec 23, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved leather tanning process is provided for producing leather which can be washed in water substantially without drying or cracking. The tanning process includes preliminary treatment steps during which skins are tumbled in a heated bath containing a major proportion of a combination grease/oil lubricating solution, for process times and at process temperatures to impregnate skin pores with the lubricating solution. The thus-treated skins are bated and tanned, with a preferred process including a sequence of mineral and vegetable tanning steps. Subsequent to the tanning steps, the leather skins are tumbled in a bath containing a minor proportion of the lubricating solution and other lubricating agents. The resultant leather skins are soft and compliant and retain these characteristics despite washing in water.
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