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US 2024/0417209 A1Published application
Wound roll core covering
Assignee3M Innovative Properties Company
InventorsELIZABETH A. CRAWLEY, Garth V. Antila, Andy J. Murphy
Life of this patent
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Abstract
A winding core covering (10) comprising a backing (45), the backing (45) having an adhesive layer (40) and a support layer (30) in contact with the adhesive layer (40), and a web contact layer (20) in contact with the backing (45), the web contact layer (20) including a thermoplastic polymer, where the outer surface (27) of the web contact layer (20) has a structured surface comprising a plurality of protrusions (25) having an average height (H) of 50 μm to 600 μm. A winding core (41) including the disclosed winding core covering (10).
Claims12
A winding core covering comprising:
- a backing, the backing comprising:
- an adhesive layer, wherein the adhesive layer has a first major surface and a second major surface;
- and
- a support layer, wherein the support layer has a first major surface and a second major surface, wherein the first major surface of the support layer is in contact with the second major surface of the adhesive layer;
- and
- a web contact layer, the web contact layer comprising:
- a thermoplastic polymer, wherein the web contact layer has a first major surface and a second major surface,
- wherein the second major surface of the support layer is in contact with the first major surface of the web contact layer at an interface, wherein the second major surface of the web contact layer has a structured surface comprising a plurality of protrusions, and wherein the protrusions have an average height (“H”) of 50 μm to 600 μm.
5 more elements
Dependencies are inferred from the claim text.