Stabilized foam for medical PSA substrate

Abstract

The present invention provides a stabilized foam having a crosslinked closed cell polyolefin foam having a top and a bottom surface; a stabilizing layer disposed onto at least one of the top and the bottom surfaces of the crosslinked closed cell polyolefin foam; and an adhesive layer disposed onto at least one of the top or the bottom surfaces. Also provided is a method of preparing the stabilized foam, a method of treating a wound, scrape, abrasion or skin puncture, a method of maintaining cleanliness of an operation incision site, suture site, catheter insertion site, or an intentional skin breach site, a method of monitoring electrical impulses during EKG or delivering electrical impulses in a TENS or biofeedback therapy, and a method of softening the collagen deposits on a scar and reducing the raised or keloid portion of the scar over time.

Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a stabilized foam. More particularly, the present invention relates to a stabilized foam suitable for use in medical and skin contact applications, having a crosslinked closed cell polyolefin foam, at least one stabilizing layer and at least one adhesive layer.

[0003] 2. Description of the Related Art

[0004] For a variety of medical and skin contact products including first-aid bandages, tapes, absorbent dressings, wound covers and closures, scar reduction therapy pads, electrode grounding pads and drug delivery patches, foam is used as the exterior layer away from the skin. A skin contact adhesive is applied to this foam to provide adhesion to the skin. Many adhesives are in use and include acrylics in hot melt, solvent solution or aqueous suspension, synthetic block copolymer and other hot melts, silicone gels and silicone from solvent or hot melt systems. Often such foam films are...