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US 2023/0172748 A1Published application
Skin contact material
AssigneeConvatec Limited
InventorStewart Lee
Life of this patent
Estimating the term…
Abstract
A substrate based skin contact material formed from a hydrocolloid having a silicone based component extending over regions of the substrate surface. The adhesive is formed non-continuously over the substrate to provide areas devoid of adhesive to allow appreciable moisture transfer between the skin and substrate and improve the skin friendliness of the material during use and allow convenient removal with avoidance of skin irritation.
Claims20
A skin contact material comprising:
- a substrate having a first surface to be positioned against the skin and a second surface to be positioned away from the skin;
- and
- an adhesive layer coated on the first surface as a rectangular grid pattern formed by a plurality of protrusions extending over the first surface,
- wherein:
- the plurality of protrusions are coated on a flat face of the first surface that is devoid of projections;
- the plurality of protrusions include a first set of protrusions aligned in protrusion rows that are spaced apart from one another in a first direction and a second set of protrusions aligned in protrusion columns that are spaced apart from one another in a second direction perpendicular to the first direction;
- the first set of protrusions are aligned in each protrusion row with discontinuities located between adjacent protrusions and the second set of protrusions are aligned in each protrusion column with discontinuities located between adjacent protrusions;
- the first surface of the substrate includes a first side and a second side arranged opposite the first side;
- and
- the plurality of protrusions are coated only on the first side of the first surface without being coated on the second side of the first surface.
7 more elements
A skin contact material comprising:
- a substrate having a first surface to be positioned against the skin and a second surface to be positioned away from the skin;
- and
- an adhesive layer coated on the first surface by a plurality of protrusions extending over the first surface,
- wherein:
- the plurality of protrusions are coated on a flat face of the first surface that is devoid of projections;
- the plurality of protrusions include a first set of protrusions aligned in protrusion rows and a second set of protrusions aligned in protrusion columns;
- the first set of protrusions are aligned in each protrusion row with discontinuities located between adjacent protrusions and the second set of protrusions are aligned in each protrusion column with discontinuities located between adjacent protrusions;
- the first surface of the substrate includes a first side and a second side arranged opposite the first side;
- the plurality of protrusions are coated only on the first side of the first surface without being coated on the second side of the first surface;
- and
- the plurality of protrusions are uniformly distributed over the first side of the first surface.
8 more elements
Dependencies are inferred from the claim text.