Self-adhering waterproofing membrane

Abstract

A membrane for application to a surface of a structure to provide waterproofing protection to the structure, the membrane including a surface layer of thermoplastic or elastomeric material, a layer of cushion material sealed to the layer of thermoplastic or elastomeric material, a pressure sensitive adhesive bound to a side of the cushion material remote from the thermoplastic or elastomeric material, and a release liner removably mounted on the pressure sensitive adhesive.

1 . A membrane for application to a surface of a structure to provide waterproofing protection to the structure surface, the membrane comprising:
 an outer surface layer of a selected one of thermoplastic and elastomeric waterproof material;   a layer of cushion material fixed to an inner surface of said layer of waterproof material;   a pressure sensitive adhesive bound to a side of said cushion material layer remote from said layer of waterproof material; and   a release liner removably mounted on a side of said pressure sensitive adhesive remote from said layer of cushion material.   
     
     
         2 . The membrane in accordance with  claim 1 , wherein said layer of waterproof material is provided with selvedge structure facilitating overlapping and bonding of the membrane to an adjoining membrane of like construction. 
     
     
         3 . The membrane in accordance with  claim 1 , wherein said layer of cushion material comprises a cellular foam material. 
     
     
         4 . The membrane in accordance with  claim 1 , wherein said pressure sensitive adhesive layer retains adhesive properties in the presence of water and concrete alkalis. 
     
     
         5 . The membrane in accordance with  claim 1 , wherein said release liner is manually separable from said pressure sensitive adhesive. 
     
     
         6 . The membrane in accordance with  claim 1 , wherein said outer surface thermoplastic layer comprises at least in part a selected one of vinyl and polyolefin. 
     
     
         7 . The membrane in accordance with  claim 1 , wherein said surface layer is at least about 0.015-0.080 inch in thickness. 
     
     
         8 . The membrane in accordance with  claim 1 , wherein said layer of cushion material is at least about 0.015-0.375 inch in thickness. 
     
     
         9 . The membrane in accordance with  claim 3 , wherein said outer layer of waterproof material is bound to said layer of cushion material by a selected one of adhesive adhering, laminating, extrusion coating, heat sealing, gluing, and taping. 
     
     
         10 . The membrane in accordance with  claim 5 , wherein said pressure sensitive adhesive layer is adapted to be manually adhered to the surface of the structure by the manual removal of said release liner and placement of the adhesive layer on the surface of the structure. 
     
     
         11 . The membrane in accordance with  claim 1 , and further comprising a barrier film disposed between said layer of cushion material and said pressure sensitive adhesive. 
     
     
         12 . The membrane in accordance with  claim 6 , wherein said surface layer further comprises integral reinforcing material. 
     
     
         13 . The membrane in accordance with  claim 12  wherein said integral reinforcing material comprises a selected one of glass fiber, polyester, and nylon. 
     
     
         14 . The membrane in accordance with  claim 1  wherein said layer of cushion material is adapted to conform around minor irregularities in the surface of the structure, adapted to retain conforming properties in the presence of water and alkalis, and adapted to inhibit lateral water migration. 
     
     
         15 . The membrane in accordance with  claim 2 , wherein the selvedge structure is adapted to overlap the waterproof layer of the adjoining membrane and to be secured thereto. 
     
     
         16 . A method for making a waterproof membrane, the method comprising the steps of:
 providing a layer of cushion material;   bonding a layer of waterproof thermoplastic or elastomeric material to a first side of the layer of cushion material;   affixing a layer of pressure sensitive adhesive to a second side of the layer of cushion material; and   mounting a release liner on a side of the pressure sensitive adhesive remote from the cushion material.   
     
     
         17 . The method in accordance with  claim 16 , wherein the cushion material comprises a cellular foam material of at least about 0.015-0.375 inch thickness. 
     
     
         18 . The method in accordance with  claim 16 , wherein the layer of waterproof material extends on a side thereof beyond a side edge of adjoining cushion material of the membrane to form a selvedge, and comprising the further step of bonding the selvedge to an edge portion of an abutting layer of waterproof thermoplastic or elastomeric material of a second membrane. 
     
     
         19 . The method in accordance with  claim 18 , wherein the step of bonding the selvedge comprises bonding the selvedge to the edge portion of the abutting layer of thermoplastic or elastomeric material of the second membrane by a selected one of adhesive, glue, tape, and hot-air welding. 
     
     
         20 . The method in accordance with  claim 16 , wherein the step of bonding the layer of waterproof thermoplastic or elastomeric material to the layer of cushion material comprises a selected one of adhesively adhering, laminating, extrusion coating, heat sealing, gluing and taping of the waterproof material to the cushion material. 
     
     
         21 - 36 . (canceled) 
     
     
         37 . The membrane in accordance with  claim 3  wherein said cellular foam material comprises a non-absorptive closed cell foam. 
     
     
         38 . (canceled) 
     
     
         39 . The method in accordance with  claim 16  wherein the cushion material comprises a cellular foam material. 
     
     
         40 . The method in accordance with  claim 39  wherein the cellular foam material comprises a non-absorptive closed cell foam. 
     
     
         41 . The method in accordance with  claim 16  wherein the thermoplastic material comprises at least one of vinyl and polyolefin. 
     
     
         42 - 47 . (canceled)