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United States Patent

Speith-Herfurth , et al. ( 1 of 1 ) 7,678,461 March 16, 2010

Biaxially oriented polypropylene film provided with a cold-seal adhesive coating and having excellent lubricating

properties

Abstract

The invention relates to a multi-layer biaxially oriented

polypropylene film consisting of a base layer at least one first cover layer. The base layer contains a hydrocarbon resin, and the cover layer contains a polydialkylsiloxane with a viscosity of at least 200.000 mm.sup.2/sec. The first cover layer is provided with a cold-seal adhesive coating on its outer surface.

Inventors:

Assignee:

Appl. No.:

Filed:

PCT Filed:

PCT No.: Speith-Herfurth; Angela (Egelsbach, DE), Hansohn; Robert (Kirkel, DE) Treofan Germany GmbH & Co. KG (DE) 10/552,572 April 8, 2004 April 08, 2004 PCT/EP2004/003751

371(c)(1),(2),(4) October 11, 2005 Date:

PCT Pub. No.: WO2004/089621

Foreign Application Priority Data

Apr 11, 2003 [DE]

Current U.S. Class:

Current International

Class: 103 16 623 428/447 ; 427/355; 428/451; 428/500; 428/516; 428/910 B32B 27/08 (20060101); B32B 27/18 (20060101)

PCT Pub. Date: October 21, 2004

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