Patent ID: 8328878

Claim:
A process for manufacturing yarn of animal collagen fiber comprising: (1) choosing tanned leathers as raw materials; (2) loosing the tanned leathers to get collagen fibers, wherein the tanned leathers are loosened by a reciprocating liquid opener, which has a container, a beater and liquid, wherein the liquid comprises water and at least one substance added to the water comprising 0.2-2 percent (by weight of water) washing agent, 1-10 percent (by weight of water) lipid or product thereof, 0.2-1.5 percent (by weight of water) penetrating agent and 0.03-0.5 percent (by weight of water) basic substances, and said liquid expands the tanned leather materials; (3) beating the tanned leather materials by said beater, adhesive substances of fiber matrix among the collagen fibers are beaten to become lubricating agent; (4) assorting the collagen fibers; (5) blending the collagen fibers with textile fibers; (6) carding, drawing and twisting the blended collagen and textile fibers.