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US 11,649,382 B2Granted
Biodegradable cellulose fiber-based substrate, its manufacturing process, and use in an adhesive tape
AssigneeAhlstrom Oyj
InventorsMenno Dufour, Violaine Durand
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Abstract
A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.
Claims11
An adhesive tape comprising:
- (i) a cellulose fiber-based paper substrate,
- (ii) a release coating layer on at least one surface of the paper substrate, and
- (iii) an adhesive layer on another surface of the paper substrate opposite to the release coating layer, wherein the release coating layer comprises, based on dry weight percentage:
- (a) 50-99% of at least one water-soluble polymer (WSP) containing hydroxyl groups, and
- (b) 1-50% of at least one diketene compound, wherein the at least one diketene compound is substituted with at least one linear, branched and/or cyclic C8- C30 hydrocarbon chain which may contain heteroatoms,
- wherein the at least one diketene compound is immobilized on the WSP and the WSP is immobilized on the at least one surface of the paper substrate.
3 more elements
Dependencies are inferred from the claim text.