Mitsubishi Polyester Film Gmbh

Edward J Koinskie, Jr

Kenneth J Muschelewicz

A multi-layered sheet product is provided which is useful as a release backing for pressure sensitive adhesive labels or as a liner for foodstuff containers and trays. The sheet product has a polymeric layer and a cellulosic layer laminated together and having an adhesive layer therebetween. A substantially uniform silicone coating is provided on a surface of the polymeric layer opposite the surface adhered to the cellulosic layer. The polymeric layer surface having the silicone coating thereon constitutes a smooth surface which, when the product is used as a release backing, minimizes distortion of the adhesive surface of an adhesive label upon separation of the label from the sheet product, an important feature for use with transparent labels. When used as a release liner for foodstuff containers and trays, the polymeric layer prevents absorption by the cellulosic layer of water from the foodstuff. Use of an oriented polyester as the polymeric layer, provides excellent tear resistance, dimensional stability and stiffness in an extremely thin laminated sheet product.

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Simpsonville, SC, United States of America

Edward J Koinskie, Jr