Method for manufacturing a watertight, breathable shoe structure

Abstract

Method for manufacturing a watertight, breathable shoe structure in which the shoe structure comprises an exterior upper with a lower end, an interior upper with a lower end, an insole with a continuous outer edge and an outsole, with the interior upper having a watertight, water vapour permeable functional layer on the side facing towards the exterior upper, characterised in that at least one of the sewn seam joints relating to the interior upper with the watertight, water vapour permeable functional layer is formed such that a tape made from a thermoplastic material is first placed between the parts of the shoe structure to be joined, in the area of the intended sewn seam, said tape having a melting temperature in the range from 60° C. to 85° C., that the parts are then sewn together and that after sewing the tape is caused to melt at least in the area of the sewn seam.

1 . Method for manufacturing a watertight, breathable shoe structure in which the shoe structure comprises an exterior upper with a lower end, an interior upper with a lower end, an insole with a continuous outer edge and an outsole, with the interior upper having a watertight, water vapour permeable functional layer on the side facing towards the exterior upper, wherein at least one of the sewn seam joints relating to the interior upper with the watertight, water vapour permeable functional layer is formed such that a tape made from a thermoplastic material is first placed between the parts of the shoe structure to be joined, in the area of the intended sewn seam, said tape having a melting temperature in the range from 60° C. to 85° C., that the parts are then sewn together and that after sewing the tape is caused to melt at least in the area of the sewn seam. 
   
   
       2 . Method according to  claim 1 , wherein the tape has a melting temperature in the range from 65° C. to 75° C. 
   
   
       3 . Method according to  claim 1 , wherein the tape is in contact with the watertight, water vapour permeable functional layer. 
   
   
       4 . Method according to  claim 1 , wherein the tape has a layer on at least one side that is tacky at room temperature. 
   
   
       5 . Method according to  claim 1 , wherein the lower end of the exterior upper, the lower end of the interior upper and the outer edge of the insole are sewn together, and that the tape is inserted between exterior upper and interior upper before exterior upper, interior upper and insole are sewn together. 
   
   
       6 . Method according to  claim 4 , wherein the tape has a layer on both sides that is tacky at room temperature. 
   
   
       7 . Method according to  claim 1 , wherein the lower end of the interior upper extends beyond the lower end of the exterior upper, that the exterior upper is joined to the interior upper at the lower end of the exterior upper by means of a sewn seam, that the tape is inserted between exterior upper and interior upper in the area of the intended sewn seam and then exterior upper and interior upper are sewn together, that the outer edge of the insole is joined to the lower end of the interior upper, that the outsole is injection moulded to the insole and to the lower ends of exterior upper and interior upper so that the lower ends of exterior upper and interior upper are surrounded by the outsole and the outsole is injection moulded to the end of the interior upper extending beyond the lower end of the exterior upper. 
   
   
       8 . Method according to  claim 7 , wherein the tape has a layer on one side that is tacky at room temperature. 
   
   
       9 . Method according to  claim 7 , wherein the tape extends from the area of the sewn seam between interior upper and exterior upper to the lower end of the interior upper. 
   
   
       10 . Method for manufacturing a watertight, breathable shoe structure of a more lightweight makeup without insole, in which the shoe structure comprises an exterior upper with a lower end, an interior upper with a lower end and a shell-shaped sole, with the interior upper having a watertight, water vapour permeable functional layer on the side facing towards the exterior upper, and in which interior upper and exterior upper are of essentially the same length or with an interior upper extending beyond the lower end of the exterior upper, wherein the interior upper is first folded back and the tape with a melting temperature in the range from 60° C. to 85° C., is sewn to the exterior upper with the tape extending beyond the lower end of the exterior upper, that the exterior upper is joined to the shell-shaped sole by means of a further sewn seam and then the interior upper is folded towards the exterior upper again and the tape is caused to melt. 
   
   
       11 . Watertight, breathable shoe structure comprising an exterior upper with a lower end, an interior upper with a lower end, an insole with a continuous outer edge and an outsole, in which the interior upper has a watertight, water vapour permeable functional layer on the side facing towards the exterior upper, wherein at least one of the sewn seam joints relating to the interior upper with a watertight, water vapour permeable functional layer is formed such that a tape made from a thermoplastic material is located at least in the area of the sewn seam and is in contact with the watertight, water vapour permeable functional layer, that the tape extends into the sewn seam holes of the functional layer and fills the space between thread and sewn seam hole, and that the tape has a melting temperature in the range from 60° C. to 85° C. 
   
   
       12 . Watertight, breathable shoe structure according to  claim 11 , wherein the lower end of the exterior upper, the lower end of the interior upper and the outer edge of the insole are sewn together, and that the tape is located between exterior upper and interior upper. 
   
   
       13 . Watertight, breathable shoe structure according to  claim 11 , wherein the lower end of the interior upper extends beyond the lower end of the exterior upper and is joined to the insole by means of a sewn seam, that a plastic outsole is injection moulded to the insole and the lower ends of exterior upper and interior upper so that the lower ends of exterior upper and interior upper are surrounded by the outsole and that the tape is located between the exterior upper and the interior upper at least in the area of the sewn seam.