公开(公告)号：US20230257836A1

公开(公告)日：2023-08-17

申请号：US18002990

申请日：2021-06-22

申请人： CHIORINO TECHNOLOGY S.P.A.

发明人： Marco TOSCANO

IPC分类号： C14C11/00 ,  C09J5/02 ,  C09J7/40 ,  C09J7/25 ,  C09J7/38 ,  C14B1/46 ,  B32B37/12 ,  B32B37/24 ,  B32B38/00 ,  B32B9/02 ,  B32B9/06

CPC分类号： C14C11/006 ,  B32B9/06 ,  B32B9/025 ,  B32B37/12 ,  B32B37/24 ,  B32B38/0012 ,  C09J5/02 ,  C09J7/25 ,  C09J7/38 ,  C09J7/405 ,  C14B1/46 ,  B32B2037/243 ,  B32B2038/0016 ,  B32B2255/12 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2307/748 ,  B32B2317/08 ,  B32B2317/12 ,  C09J2400/28 ,  C09J2475/001 ,  C09J2475/006

摘要： A process for coating vegetable-tanned leathers is provided. The process includes depositing a coating layer composed of an aqueous dispersion of polyurethane resin on a support having anti-adhesion properties, curing the coating layer on the support, depositing an adhesive layer composed of an aqueous dispersion of polyurethane resin onto the cured coating layer, applying a leather piece onto the adhesive layer, the leather piece being a vegetable-tanned leather piece, in a continuous oven curing the adhesive layer to attach the leather piece to the coating layer, and removing the coated leather piece from the support. Within the continuous oven the leather piece reaches a maximum temperature comprised between 65° C. and 75° C., with a dwell time in the oven comprised between 180 and 210 seconds.

公开(公告)号：US20240191408A1

公开(公告)日：2024-06-13

申请号：US18554933

申请日：2022-04-11

申请人： CHIORINO TECHNOLOGY S.P.A.

发明人： Maurizio MASI ,  Marco TOSCANO

IPC分类号： D04H1/4274 ,  D04H1/4266 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/48 ,  D06C15/00

CPC分类号： D04H1/4274 ,  D04H1/4266 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/48 ,  D06C15/00 ,  D10B2211/02

摘要： A dry method for manufacturing a non-woven fabric from tanned leather scraps involves providing tanned leather scraps in the form of compact material, subjecting the tanned leather scraps to opening to tear the compact material into fiber, and subjecting the torn material to carding. Textile fibers are added during carding to obtain a web of mixed fibers, the textile fibers including wool fibers. The dry method further involves subjecting the web of mixed fibers to needling to obtain a felt. The web of mixed fibers is free of impregnating agents and includes a leather fiber component composed of tanned leather fibers having a diameter of between 4 μm and 70 μm and a length of between 4 mm and 20 mm. The leather fiber component is comprised in a weight percentage greater than or equal to 50% of a total weight of the fibers in the web of mixed fibers.