METHOD OF PRODUCING A SURFACE PROTECTION COMPOSITE
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United States of America Patent
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Apr 13, 2017
app pub date -
Mar 26, 2015
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Mar 26, 2014
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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
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