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US 6,680,113 B1Granted
Multi-layered dressing
Assignee3M Innovative Properties Company
InventorsDonald H. Lucast, Steven B. Heinecke
Life of this patent
Estimating the term…
Abstract
A highly moisture vapor transmissive adhesive composite is disclosed comprising at least three layers, a polymeric backing layer, a high moisture vapor transmission layer, and a skin contacting adhesive layer. The high moisture vapor transmission layer may be made from a polymeric backing material, an adhesive material or both.
Claims23
An adhesive composite comprising
- a) a polymeric backing layer that is liquid and bacteria impermeable,
- b) a high moisture vapor transmission layer comprising a gel-adhesive mixture composition that comprises a pressure-sensitive adhesive, a hydrocolloid, and a liquid swelling agent, and
- c) a skin contacting adhesive layer, and wherein said high moisture vapor transmission layer is selected from an adhesive material having a Standardized Transmission Rate of at least 900 g/m2/24hrs/37° C./100-20% RH, and the skin contacting adhesive layer is selected from an adhesive material having an adhesion to skin strength of a least 15 g/in., provided that the material of layer b) is not the same as the material of layer c) and that the overall adhesive composite exhibits a moisture vapor transmission rate of at least about 1200 g/m2/24 hrs/37° C./20% RH.
Dependencies are inferred from the claim text.