Method of making leather fiber insulation by drying-case hardening and product thereof
AssigneeCollagen Corporation
InventorHerbert C. Scribner, Jr.
Life of this patent
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Abstract
Chrome tanned leather scrap is converted into thermal insulation by shredding the tanned leather scrap into leather fibers, without damaging the structural fiber integrity, and case hardening the shredded leather fibers. The shredded leather fibers are case hardened by reducing the moisture content thereof to less than 5% by weight, and preferably less than 2%.
Claims14
Pipe insulation material comprising case-hardened shredded tanned leather fibers of reduced hydroscopic tendency capable of taking up moisture only to a level of about 12% by weight or less over an eight hour period in an atmosphere of 100% humidity.
A method of converting tanned leather scrap into thermal insulation comprising the steps of:
- (A) Shredding the tanned leather scrap into leather fibers without damaging the structural fiber integrity;
- and
- (B) case hardening the shredded leather fibers by drying same to produce fibers of reduced hydroscopic tendency capable of taking up moisture only to a level of about 12% by weight or less over an eight hour period in an atmosphere of 100% humidity.
Dependencies are inferred from the claim text.