Patent ID: 6923982

Claim:
A method of manufacturing a calendered hydrocolloid dressing comprising the steps of: a. blending a backing film composition, said backing film composition including an ethylene based copolymer; b. extruding the backing film composition; c. calendaring the backing film composition between a top roll and a center roll to form a backing film layer; d. blending a polymeric pressure-sensitive adhesive composition, said polymeric pressure-sensitive adhesive composition including a hydrocolloid; and e. calendaring the adhesive composition between the center roll and a lower roll to from a hydrocolloid dressing comprising a backing film layer and an adhesive layer wherein the polymeric pressure-sensitive adhesive composition is applied and calendered directly onto the backing film layer such that formation of an adhesive layer of said polymeric pressure-sensitive adhesive composition and lamination of said adhesive layer to said backing film layer is achieved in a single manufacturing step.