Release liner comprising nanofibrillar cellulose
AssigneeUpm Specialty Papers Oy
InventorsMikko Rissanen, Markus Nuopponen
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Abstract
The invention relates to a method for obtaining a release liner and to release liner comprising a primer layer and a cellulose based support layer, the primer layer comprising an organic compound having one or more functional vinylic groups, the organic compound comprising an acetal connecting a first moiety and a second moiety, the first moiety comprising nanofibrillar cellulose having functional hydroxyl groups and the second moiety comprising an organic fragment, the organic fragment comprising at least one functional vinylic group.
Claims21
A method for obtaining a substrate layer for a release liner comprising nanofibrillar cellulose, the method comprising:
- providing a cellulose based support layer,
- providing an organic compound comprising a first moiety and a second moiety connected by an acetal by arranging an acetalisation reaction between nanofibrillar cellulose and an organic fragment, and
- applying the organic compound on a surface of the cellulose based support layer to form a release liner comprising a primer layer and the cellulose based support layer,
- wherein after the acetalisation reaction the first moiety comprises the nanofibrillar cellulose obtained from a primary cellulose having functional hydroxyl groups and the second moiety comprises the organic fragment, the organic fragment comprising at least one functional vinylic group.
A substrate layer for a release liner comprising a primer layer and a cellulose based support layer, the primer layer comprising an organic compound having one or more functional vinylic groups, the organic compound comprising an acetal connecting a first moiety and a second moiety, the first moiety comprising nanofibrillar cellulose having functional hydroxyl groups and the second moiety comprising an organic fragment, the organic fragment comprising at least one functional vinylic group.
Dependencies are inferred from the claim text.