Formation of leather sheet material using hydroentanglement

Details Formation of leather sheet material using hydroentanglement Formation of leather sheet material using hydroentanglement

2005-05-27

2010-06-08

Aftergut, Jeff (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C028S103000, C028S104000, C028S140000, C428S151000, C428S152000, C428S085000, C264S500000, C264S319000

Reexamination Certificate

active

07731814

ABSTRACT:
Leather sheet material is made by hydroentangling a web (4) of mixed reclaimed leather fibers and synthetic fibers. The synthetic fibers are meltable bicomponent fibers which are heated prior to entanglement to fuse and form a supporting network for the leather fibers. A sheet of tissue paper (1a) is laid over the surface of the leather fiber web (4) and hydroentanglement jets (16) are directed through the tissue paper into the web.

REFERENCES:
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patent: 5009747 (1991-04-01), Viazmensky et al.
patent: 5254399 (1993-10-01), Oku et al.
patent: 6007653 (1999-12-01), Pirinen et al.
patent: 6264879 (2001-07-01), Addie et al.
patent: 2003/0207636 (2003-11-01), Gosavi et al.
patent: WO01/94673 (2001-12-01), None
patent: WO03/048437 (2003-06-01), None

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