Patent No. EP3892310 (titled "Hybrid Silicone And Acrylic Adhesive Cover For Use With Wound Treatment") was filed by M Innovative Properties on Sep 14, 2016. The application was issued on Oct 29, 2025.
A sealing member for negative-pressure therapy comprises a laminated structure consisting of a first elastomeric film, a bonding adhesive layer, a second elastomeric film, and a sealing adhesive layer. The bonding adhesive is stronger than the sealing adhesive. The sealing member is manufactured by coupling the bonding adhesive to the first film and the sealing adhesive to the second film. Perforations are formed through the second elastomeric film and sealing adhesive layer. Finally, the second film is coupled to the bonding adhesive layer, resulting in a layered sequence where the bonding adhesive layer is adjacent to the first film, the second film is adjacent to the bonding adhesive, and the sealing adhesive layer is adjacent to the second film.

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