Adhesive laminates and applications thereof

Abstract

A releasably adhesive laminate ( 1 ) comprises a structural layer ( 2 ) carrying on at least part of one side thereof a hydrophobic gel ( 4 ) and on at least part of the other side thereof a pressure-sensitive adhesive ( 3 ). The structural layer ( 2 ) is preferably a film of synthetic plastics material, eg polyurethane. The pressure-sensitive adhesive ( 3 ) is preferably an acrylic adhesive, and the hydrophobic gel ( 4 ) is preferably a silicone gel. The laminate ( 1 ) may be used as a skin contact component of a wound dressing or in numerous other applications.

1 .- 21 . (canceled) 
     
     
         22 . A wound dressing comprising:
 an adhesive laminate that comprises a melt-blown structural layer carrying on at least part of one side thereof a silicone gel and carrying on at least part of the other side thereof a pressure-sensitive adhesive; and   one or more secondary dressing components affixed to the adhesive laminate via the pressure-sensitive adhesive.   
     
     
         23 . The wound dressing according to  claim 22 , wherein the pressure-sensitive adhesive is an acrylic adhesive. 
     
     
         24 . The wound dressing according to  claim 22 , wherein the structural layer is melt-blown polyurethane. 
     
     
         25 . The wound dressing according to  claim 22 , wherein the silicone gel is formed by curing a liquid precursor composition comprising vinyl-substituted silicone and a hydride-containing silicone. 
     
     
         26 . The wound dressing according to  claim 25 , wherein the precursor composition is cured while in direct contact with the melt-blown structural layer. 
     
     
         27 . The wound dressing according to  claim 22 , wherein the silicone gel is at a coating weight of between 50 g/m 2  and 800 g/m 2 . 
     
     
         28 . The wound dressing according to  claim 22 , wherein the thickness of the silicone gel is between 5 μm and 10 mm. 
     
     
         29 . The wound dressing according to  claim 22 , further comprising:
 a release liner applied to the silicone gel.   
     
     
         30 . The wound dressing according to  claim 22 , wherein the adhesive laminate is apertured or perforated. 
     
     
         31 . The wound dressing according to  claim 30 , wherein the perforations are arranged in a regular array. 
     
     
         32 . The wound dressing according to  claim 30 , wherein the perforations are circular and have a diameter of from 50 μm to 10 mm. 
     
     
         33 . The wound dressing according to  claim 22 , wherein the one or more secondary dressing components include one or more absorbent components. 
     
     
         34 . The wound dressing according to  claim 33 , wherein the one or more absorbent components are selected from fabric pads, hydrophilic foams, hydrogels, alginates and hydrocolloids. 
     
     
         35 . The wound dressing according to  claim 22 , wherein the one or more secondary dressing components include a fluid-impermeable barrier layer. 
     
     
         36 . The wound dressing according to  claim 35 , wherein the barrier layer is provided with an opening to which is bonded a coupling by which the dressing may be connected to a gas supply or to a suction line.