公开(公告)号：US20170100923A1

公开(公告)日：2017-04-13

申请号：US15128239

申请日：2015-03-26

Applicant: Covestro LLC

Inventor： Zhizhong Liu ,  Heath Rawlings

IPC: B32B37/15 ,  B32B7/06 ,  B32B38/10 ,  C09J175/04 ,  B32B27/06 ,  B32B37/12 ,  C09J7/02 ,  C09J133/08 ,  B29C47/00 ,  B32B27/40

CPC classification number: B32B37/153 ,  B29C48/0021 ,  B29C48/022 ,  B29C48/08 ,  B29K2075/00 ,  B29K2995/0022 ,  B29K2995/007 ,  B29K2995/0073 ,  B29L2007/008 ,  B29L2009/00 ,  B32B7/06 ,  B32B23/20 ,  B32B27/06 ,  B32B27/302 ,  B32B27/304 ,  B32B27/32 ,  B32B27/325 ,  B32B27/34 ,  B32B27/36 ,  B32B27/365 ,  B32B27/40 ,  B32B37/12 ,  B32B38/10 ,  B32B2250/03 ,  B32B2250/24 ,  B32B2307/406 ,  B32B2307/536 ,  B32B2307/538 ,  B32B2307/748 ,  B32B2309/02 ,  B32B2309/105 ,  B32B2375/00 ,  B32B2571/00 ,  C09J7/22 ,  C09J7/29 ,  C09J7/38 ,  C09J133/08 ,  C09J175/04 ,  C09J2201/162 ,  C09J2433/00 ,  C09J2475/00 ,  C09J2475/006

Abstract: The present invention provides a method of making a three-layer aliphatic thermoplastic polyurethane (TPU) surface protection composite. The method involves extruding an aliphatic thermoplastic polyurethane (TPU) layer onto a substrate layer at the flat die extrusion nip comprising a rubber roller in the back position and a polished steel roller in the front position; cooling the extruded aliphatic thermoplastic polyurethane; feeding the two-layer thermoplastic polyurethane (TPU) composite film into a downstream nip comprising at least one rubber roller; and laminating a flexible polymer interleaf film onto the exposed thermoplastic polyurethane (TPU) side of the two-layer composite under pressure in that nip. The surface protection composite of the present invention may be included in a variety of products for use in automotive, electronics or furniture applications