Adhesive structures for attachment to skin

1 . An adhesive structure for attachment to skin comprising an adhesive that transmits moisture vapor at a rate exceeding about 250 grams per square meter per 24 hours and an olefin containing backing material comprising a non-woven fabric and a perforated or microporous film, the backing material also transmitting moisture vapor at a rate exceeding about 250 grams per square meter per 24 hours.

2 . The adhesive structure of claim 1 wherein the adhesive comprises polyurethane, polyacrylate, polysiloxane, their copolymers, or hydrogel adhesives.

3 . The adhesive structure of claim 1 wherein the non-woven fabric or the perforated or microporous film comprises polyethylene, polypropylene, polyether, polyester, polyamide, or their copolymers.

4 . The adhesive structure of claim 1 wherein the microporous film does not pass liquid water within about 6 hours.

5 . The adhesive structure of claim 1 for use with an ostomy appliance.

6 . The adhesive structure of claim 1 wherein the non-woven fabric is processed to increase its strength.

7 . The adhesive structure of claim 5 wherein the non-woven fabric is processed to increase its strength.

8 . An ostomy appliance comprising an adhesive structure with an olefin containing backing material wherein the adhesive and olefin containing backing material each transmit moisture vapor at a rate exceeding about 250 grams per square meter per 24 hours.

9 . The ostomy appliance of claim 8 wherein the backing material is a microporous or perforated film.

10 . The ostomy appliance of claim 8 wherein the portion of the backing material enclosed or covered by attachment of the effluent containing portion of the appliance is itself covered with a film that is impermeable to stomal effluent.

11 . The ostomy appliance of claim 8 wherein the surface of the adhesive structure is impermeable to stomal effluent within the portion of the surface of the backing material enclosed or covered by attachment of the effluent containing portion of the appliance, said adhesive structure having an MVTR exceeding about 250 grams per square meter per 24 hours at some other surface portion of the adhesive structure.

12 . The ostomy appliance of claim 9 wherein the adhesive structure is created from an impermeable olefin containing film that is then perforated or otherwise made moisture vapor permeable.

13 . The ostomy appliance of claim 8 wherein the adhesive is a polyurethane, polyacrylate, polysiloxane, their copolymers, or a hydrogel.

14 . The ostomy appliance of claim 9 wherein the perforated or microporous film is polyethylene, polypropylene, polyether, polyester, polyamide, or one of their copolymers.

15 . The ostomy appliance of claim 9 wherein the microporous film does not pass liquid water within about 6 hours.