Leather tanning process

Details Leather tanning process Leather tanning process

1990-07-09

1991-03-12

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 941R, 8 9418, 8 9427, C14C 302, C14C 304

Patent

active

049990241

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.

REFERENCES:
patent: 1988685 (1935-01-01), Gusdorf

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