SUPPORT LAYER FOR A RELEASE LINER

The invention relates to a method for providing a coating layer comprising polyvinyl alcohol derivative on a paper suitable for use as a support layer of a release liner. The method comprises: providing a paper having a first side and a second side, forming a first coating layer, and forming a secon...

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Bibliographische Detailangaben
Hauptverfasser:	ANTILA, Janne, RISSANEN, Mikko, LITTUNEN, Kuisma, KOSONEN, Harri
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The invention relates to a method for providing a coating layer comprising polyvinyl alcohol derivative on a paper suitable for use as a support layer of a release liner. The method comprises: providing a paper having a first side and a second side, forming a first coating layer, and forming a second coating layer by applying a second coating on the first coating layer. A contacting element, such as an applicator roll or a metering element, is used to apply and/or meter the second coating. The second coating comprises aqueous solution having a temperature of less than 90°C, which aqueous solution contains polyvinyl alcohol derivative, which polyvinyl alcohol derivative has a degree of hydrolysis in the range of 60% to 100%, and contains pendant vinyl groups. The second coating layer has a coat weight in the range of 3 mg/m2 to 200 mg/m2 when measured as a dry weight of the polyvinyl alcohol derivative. The invention further relates to a support layer for a release layer.