Method of preparing a wound dressing

Abstract

A method of preparing a wound dressing includes coating a support layer with an adhesive layer and forming a pattern of depressions in the adhesive layer on an edge portion of the wound dressing, with the pattern of depressions being in the adhesive layer and not penetrating the support layer. The method includes forming a plurality of through-going holes in a central portion of the wound dressing, with the through-going holes penetrating both the support layer and the adhesive layer and each of the plurality of through-going holes at least as large in the support layer as in the adhesive layer.

1 . A method of preparing a wound dressing, the method comprising:
 coating a support layer with an adhesive layer;   forming a pattern of depressions in the adhesive layer on an edge portion of the wound dressing, with the pattern of depressions being in the adhesive layer and not penetrating the support layer;   forming a plurality of through-going holes in a central portion of the wound dressing, with the through-going holes penetrating both the support layer and the adhesive layer and each of the plurality of through-going holes at least as large in the support layer as in the adhesive layer;   placing an absorbent pad over the central portion on a non-skin facing surface of the support layer; and   laminating a backing layer to the absorbent pad and the edge portion of the support layer of the wound dressing.   
     
     
         2 . The method of  claim 1 , comprising coating the support layer with a thermoset, curable adhesive layer. 
     
     
         3 . The method of  claim 1 , comprising placing an absorbent foam pad over the central portion on the non-skin facing surface of the support layer. 
     
     
         4 . The method of  claim 1 , comprising placing super absorbing pad over the central portion on the non-skin facing surface of the support layer. 
     
     
         5 . A method of preparing an adhesive wound dressing, the adhesive wound dressing having a central part and an edge portion, the method comprising the steps of:
 a. providing a support layer;   b. placing the support layer into a mold;   c. dispensing a portion of uncured adhesive into the mold and onto the support layer;   d. distributing the uncured adhesive in the mold;   e. removing an excess of the uncured adhesive from the mold;   f. curing the uncured adhesive and providing a cured adhesive;   g. removing the support layer and the cured adhesive from the mold;   h. forming a plurality through-going holes in the central part of the wound dressing;   i. placing an absorbent pad on a non-adhesive side of the central part of the wound dressing; and   j. laminating a backing layer to the absorbent pad and to the edge portion of the support layer.   
     
     
         6 . The method of  claim 5 , comprising forming a pattern of depressions in the adhesive layer. 
     
     
         7 . The method of  claim 5 , comprising forming a pattern of depressions in the adhesive layer, with the pattern of depressions being in the adhesive layer and not penetrating the support layer. 
     
     
         8 . The method of  claim 5 , comprising dispensing a portion of uncured silicone adhesive into the mold and onto the support layer. 
     
     
         9 . The method of  claim 5 , comprising forming a plurality through-going holes in the central part of the wound dressing by applying high frequency mechanical vibrations to the cured adhesive. 
     
     
         10 . The method of  claim 5 , comprising forming a plurality through-going holes in the central part of the wound dressing, with each of the plurality of through-going holes having a diameter in a range from 1-10 mm. 
     
     
         11 . The method of  claim 5 , comprising placing a foam absorbent pad on the non-adhesive side of the central part of the wound dressing. 
     
     
         12 . The method of  claim 5 , comprising curing the uncured adhesive and providing the cured adhesive with a thickness measured at the central part of the wound dressing that is thinner than a thickness of the cured adhesive measured at the edge portion of the wound dressing. 
     
     
         13 . The method of  claim 5 , further comprising stretching the support layer prior to placing the support layer into the mold.