Cellulosic fiber-based substrate, method of production and use as a substrate for adhesive tapes
AssigneeA. Ahlstrom Corporation
InventorMenno Dufour
Life of this patent
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Abstract
A cellulosic fiber-based adhesive tape substrate, at least one side of which is coated with an aqueous mixture of: a) at least one organic polymer having pendant groups with at least one vinyl function; b) at least one polysiloxane comprising at least one hydrogenosiloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms; c) at least one hydrosilylation catalyst.
Claims14
A cellulosic fiber-based adhesive tape substrate, wherein at least one side of the substrate is directly coated with a single layer comprising an aqueous mixture of:
- a) at least one organic polymer comprising pendant groups with at least one vinyl function, wherin the organic polymer comprises polyvinyl alcohol;
- b) at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms;
- and
- c) at least one hydrosilylation catalyst;
- wherein the at least one polysiloxane cross-links the polyvinyl alcohol via the at least one vinyl function without or prior to any subsequent coating step.
A cellulosic fiber-based adhesive tape substrate comprising:
- a coating on a surface thereof, the coating consisting essentially of a cross-linked polyvinylalcohol comprising pendant groups with at least one vinyl function, wherein the polyvinylalcohol is cross-linked by hydrosilylation with at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, and wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms.
A cellulosic fiber-based adhesive tape substrate comprising:
- a coating on a surface thereof, the coating consisting essentially of a cross-linked polyvinylalcohol comprising pendant groups with at least one vinyl function and at least one hydrosilylation catalyst, wherein the polyvinylalcohol is cross-linked with at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, and wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms.
A method to produce the cellulosic-fiber based substrate comprising:
- 1) forming a substrate from an aqueous suspension of cellulosic fibers on a paper machine;
- 2) preparing a composition by mixing in an aqueous medium:
- a) at least one organic polymer comprising pendant groups with at least one vinyl function, wherein the organic polymer comprising polyvinyl alcohol;
- b) at least one polysiloxane comprising the at least one hydrogen siloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms;
- and
- c) least one hydrosilylation catalyst;
- 3) coating a single layer of the composition onto at least one side of the substrate, wherein the at least one polysiloxane cross-links the polyvinyl alcohol via the at least one vinyl function without or prior to any subsequent coating steps;
- and
- 4) drying the single layer of the composition coated onto the at least one side of the substrate.
Dependencies are inferred from the claim text.