Patent ID: 8951237
Filing Date: 2015-02-10
Classification: A61L,C08L,C09J,Y10T

Abstract:
1. A layered adhesive construction comprising a backing layer and a first and second layer of hydrocolloid adhesive, where the first and second layer of hydrocolloid adhesive have different composition such that the hydrocolloids or mixture of hydrocolloids of the first and the second adhesive layer are different, and further where the second layer of hydrocolloid adhesive is at least partly interposed between the first layer of hydrocolloid adhesive and the backing layer, the first and second adhesive layers each having a continuous phase and a discontinuous phase, wherein a) the discontinuous phase of the first adhesive layer comprises a hydrocolloid providing a higher moisture absorption capacity and higher initial rate of absorption to the adhesive layer than the hydrocolloids in the discontinuous phase of the second adhesive layer, b) the discontinuous phase of the second layer of adhesive comprises a hydrocolloid providing a higher cohesion following moisture absorption to the adhesive compared to the hydrocolloid in the discontinuous phase of the first adhesive layer, and c) the composition of the continuous phase of the first adhesive layer and of the continuous phase of the second adhesive layer are identical or essentially identical.