Shoe for a ski boot and related production method

Abstract

A shoe for ski boots, including a breathable portion with a first outer layer, suitable to interface with an inner wall of an associable ski boot, and a second inner layer, at least partially overlapped and fastened to the first outer layer, said layers being at least partially pierced and comprising through holes through the same layers is provided. Advantageously, at overlapped portions of the first and second layer, the relevant holes, of the first and second layer are aligned with each other to completely pass through the succession of said layers of the breathable portion. At an inner side of the shoe, the shoe comprises a waterproofing portion shaped to allow the exit of vapour or water towards the outside of the shoe and of the containment volume and so as to prevent the entry of water or vapour from the outside of the shoe within said containment volume.

1 . A shoe for ski boots, comprising:
 a breathable portion with a first outer layer, suitable to interface with an inner wall of an associable ski boot, and a second inner layer, at least partially overlapped and fastened to the first outer layer, said layers being at least partially pierced and comprising through holes through the same layers, wherein, at overlapping portions of the first and second layer, the relevant holes of the first and second layer are mutually aligned so as to pass altogether through the succession of said layers of the breathable portion, and   wherein, at an inner side of the shoe, directly facing a containment volume of a user's foot delimited by the shoe, the shoe includes a waterproofing portion shaped so as to allow the exit of vapour or water towards the outside of the shoe and of the containment volume and so as to prevent the entry of water or vapour from the outside of the shoe within said containment volume.   
     
     
         2 . The shoe according to  claim 1 , wherein said aligned holes of the first and second layer are mutually concentric. 
     
     
         3 . The shoe according to  claim 1 , wherein said aligned holes of the first and second layer are equal to each other. 
     
     
         4 . The shoe according to  claim 1 , wherein the shoe further comprises a third inner layer at least partially overlapped and associated to the first outer layer, and/or the second inner layer, said third inner layer including through holes, wherein at portions of the third inner layer overlapping the first outer layer, and/or the second inner layer, the corresponding holes of the overlapping layers are mutually aligned so as to pass altogether through the succession of said layers. 
     
     
         5 . The shoe according to  claim 1 , wherein said layers of the breathable portion have different materials, and/or thickness and/or density. 
     
     
         6 . The shoe according to  claim 1 , wherein on the first outer layer, on the side opposite to the second inner layer, there is applied a pierced and breathable upper. 
     
     
         7 . The shoe according to  claim 1 , wherein the waterproofing portion is formed in such a way as to be folded and sealed as a bag, having a front access portion so as to cover an associable user's foot at least up to the height of an ankle of said foot. 
     
     
         8 . The shoe according to  claim 1 , wherein the waterproofing portion is folded and sealed by seams and wherein said seams are waterproofed. 
     
     
         9 . The shoe according to  claim 1 , wherein the waterproofing portion comprises GORE-TEX® type fabric. 
     
     
         10 . The shoe according to  claim 1 , wherein the waterproofing portion is associated with at least one of said layers of the breathable portion of the shoe by gluing. 
     
     
         11 . The shoe according to  claim 1 , wherein at least one of said layers of the breathable portion of the shoe is made of a thermo-forming material. 
     
     
         12 . A ski boot comprising a shoe according to  claim 1 , said shoe being accommodated inside a compartment of the boot delimited by an inner wall of the boot so as to face the first outer layer of the shoe to said inner wall of the boot. 
     
     
         13 . A method of manufacture of a shoe for a ski boot comprising the steps of:
 preparing a breathable portion comprising a first outer layer, suitable to interface with an associable ski boot, and a second inner layer, at least partially overlapped and fastened to the first outer layer,   piercing holes in said first and second layer, at least at the mutually overlapping portions, so as to make aligned holes through the same overlapping layers of the breathable portion,   preparing, at an inner side of the shoe, directly facing a containment volume of a user's foot delimited by the shoe, a waterproofing portion shaped so as to allow the exit of vapour or water towards the outside of the shoe and of the containment volume thereof and so as to prevent the entry of water or water vapor from the outside of the shoe within said containment volume.   
     
     
         14 . The method of manufacture of a shoe for a ski boot according to  claim 13 , further comprising the steps of:
 suitably shaping the overlapping and mutually associated layers of the breathable portion so to obtain a thickness variation of the breathable portion according to the user's foot portion intended to come into contact therewith, and   associating the waterproofing portion to the breathable portion.   
     
     
         15 . Method of manufacture of a shoe for a ski boot according to  claim 13 , including the step of making a shoe such that it has:
 a breathable portion with a first outer layer, suitable to interface with an inner wall of an associable ski boot, and a second inner layer, at least partially overlapped and fastened to the first outer layer, said layers being at least partially pierced and comprising through holes through the same layers, wherein, at overlapping portions of the first and second layer, the relevant holes of the first and second layer are mutually aligned so as to pass altogether through the succession of said layers of the breathable portion, and   wherein, at an inner side of the shoe, directly facing a containment volume of a user's foot delimited by the shoe, the shoe includes a waterproofing portion shaped so as to allow the exit of vapour or water towards the outside of the shoe and of the containment volume and so as to prevent the entry of water or vapour from the outside of the shoe within said containment volume.