Patent ID: 7935282

Claim:
A method for producing microfine fibers artificial leather with low resistance to deformation and high tensity comprising acts of: (a) providing polymer A and polymer B in a ratio between 32% to 68% and 68% to 32%; (b) melting polymer A and polymer B to make a filament with an alternate arrangement having 24 to 128 number alternating units of the polymer A and the polymer B; (c) drawing the filament to make a staple fiber; (d) entangling the staple fiber to form a non-woven; (e) impregnating the non-woven with an impregnating agent to manufacture a leather; and (g) the leather was further polished and kneaded; wherein polymer A is polybutylene terephthalate (PBT) and polymer B is polyamide.