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US 2020/0299550 A1Published application
Biodegradable cellulose fiber-based substrate, its manufacturing process, and use in an adhesive tape
AssigneeAhlstrom-Munksjö Oyj
InventorsMenno Dufour, Violaine Durand
Life of this patent
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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.
Claims20
A biodegradable substrate comprising:
- (i) a cellulose fiber-based base paper, and
- (ii) a release coating on at least one surface of the base paper, wherein the release coating comprises, based on dry weight percentage:
- (a) 45-99% of at least one water-soluble polymer (WSP) containing hydroxyl groups,
- (b) 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, and
- wherein the biodegradable substrate is certified biodegradable in accordance with EN 13432.
2 more elements
A process for producing a biodegradable substrate comprising:
- (1) forming a release coating comprising, based on dry weight percentage:
- (a) 45-99% of the at least one water-soluble polymer (WSP) containing hydroxyl groups, and
- (b) at least one diketene compound substituted with at least one linear or branched and/or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms,
- (2) coating at least one surface of a cellulose-fiber based base paper with the release coating, and
- (3) drying the release coating on the at least one surface of the base paper to form the biodegradable substrate having the release coating on the least one surface of the base paper;
- wherein the biodegradable substrate is certified biodegradable in accordance with EN 13432.
3 more elements
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) 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.
2 more elements
Dependencies are inferred from the claim text.