Waterproof footwear application

Abstract

A waterproof article of footwear, comprising an upper consisted of one or more cut-shaped portions of a flexible waterproof material and a sole coupled to said upper, characterized in that said upper is assembled by stitches applied between peripheral edges of said cut-shaped waterproof material portions, said stitches being covered with a waterproof coating able to couple to said stitches and said upper according to a closeness relationship to each other; and a method of manufacture thereof.

1 . A waterproof article of footwear, comprising an upper consisted of one or more cut-shaped portions of a flexible waterproof material and a sole coupled to said upper, characterized in that said upper is assembled by stitches applied between peripheral edges of said cut-shaped waterproof material portions, said stitches being covered with a waterproof coating able to couple to said stitches and to said upper near to the same stitches. 
     
     
         2 . A waterproof article of footwear according to  claim 1 , wherein said waterproof coating comprises a strip of a waterproof material film which is applied substantially to the whole length of each stitch. 
     
     
         3 . A waterproof article of footwear according to  claim 2 , wherein said strip of waterproof material film is at least twice the corresponding stitch in width. 
     
     
         4 . A waterproof article of footwear according to any one of  claims 1  to  3 , wherein said waterproof coating is made up of a thermoplastic material. 
     
     
         5 . A waterproof article of footwear according to any one of  claims 1  to  3 , wherein said waterproof coating is made up of a thermal adhesive material. 
     
     
         6 . A waterproof article of footwear according to any one of  claims 1  to  5 , wherein said article of footwear is a boot made up of a flexible and waterproof material which is provided with a ribbon-like member at the end opposite to the foot portion of the article of footwear, said ribbon-like member being connected to said boot near a outlet edge thereof. 
     
     
         7 . A waterproof article of footwear according to  claim 6 , wherein said ribbon-like member is engaged in holes provided at the open end of the leg portion of said article of footwear. 
     
     
         8 . A waterproof article of footwear according to any one of  claims 1  to  7 , wherein said upper and said sole are made up of low specific weight plastic materials. 
     
     
         9 . A method of manufacture of waterproof articles of footwear comprising the steps of: assembling cut-shaped waterproof material portions making up the upper by stitching; applying a waterproof coating to each stitch; coupling said waterproof coating to the upper; connecting the upper to the sole of the article of footwear.