Composite layer

A method of making a composite layer comprising a plurality of first zones of a first polymeric material partially encapsulated in a continuous matrix of a second polymeric material, wherein all first zones of the first polymeric material have an exposed area on only one major surface of the composite layer, wherein the first polymeric material comprises first adhesive material, wherein the first polymeric material comprises first adhesive material having a first release, wherein the second polymeric material comprises second adhesive material having a second release with a different release property from the first release, the method comprising:

• providing an extrusion die, the extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining a first cavity, a second cavity, and an die slot, wherein the die slot has a distal opening, wherein each of the plurality of shims defines a portion of the distal opening, wherein at least a first one of the shims provides a conduit between the first cavity and the die slot, wherein at least a second one of the shims provides a conduit between the second cavity and the die slot;
• supplying a first extrudable polymeric material comprising the first adhesive material into the first cavity;
• supplying a second extrudable polymeric material comprising the second adhesive material into the second cavity;
• and
• extruding the first and second polymeric materials through the die slot and through the distal opening to provide the composite layer.