Fiber structure, shoe, clothing item, bag, and method of manufacturing fiber structure

Abstract

To provide a fiber structure 100 at least part of which has a layer structure including a first fiber layer 110, a second fiber layer 120, and a third fiber layer 130 that are arranged parallel to one another, a first suspension layer 140 that is composed of a weaving yarn or a knitting yarn stretched between the first fiber layer 110 and the second fiber layer 120, and a second suspension layer 150 that is composed of a weaving yarn or a knitting yarn stretched between the second fiber layer 120 and the third fiber layer 130. The fiber structure 100 can be adopted particularly as a material of shoes, clothing items, bags, and the like required to have various functions.

What is claimed is: 
     
         1 . A fiber structure at least part of which has a layer structure including
 a first fiber layer, a second fiber layer, and a third fiber layer that are arranged parallel to one another,   a first suspension layer that is composed of a weaving yarn or a knitting yarn stretched between the first fiber layer and the second fiber layer, and   a second suspension layer that is composed of a weaving yarn or a knitting yarn stretched between the second fiber layer and the third fiber layer.   
     
     
         2 . The fiber structure according to  claim 1 , wherein
 each of the first fiber layer, the second fiber layer, and the third fiber layer is a knitted layer or a woven layer.   
     
     
         3 . The fiber structure according to  claim 1 , wherein
 the first suspension layer has a higher air permeability than either the first fiber layer or the second fiber layer, and   the second suspension layer has a higher air permeability than either the second fiber layer or the third fiber layer.   
     
     
         4 . The fiber structure according to  claim 1 , wherein
 a layer structure of the first suspension layer differs from a layer structure of the second suspension layer.   
     
     
         5 . The fiber structure according to  claim 4 , wherein
 a thickness of the first suspension layer differs from a thickness of the second suspension layer.   
     
     
         6 . The fiber structure according to  claim 4 , wherein
 a material of the weaving yarn or the knitting yam of the first suspension layer differs from a material of the weaving yarn or the knitting yam of the second suspension layer.   
     
     
         7 . The fiber structure according to  claim 4 , wherein
 an air permeability of the first suspension layer differs from an air permeability of the second suspension layer.   
     
     
         8 . The fiber structure according to  claim 1 , wherein
 at least one of the first suspension layer and the second suspension layer has a first region and a second region partitioned from each other in a plane direction, and   a layer structure in the first region differs from a layer structure in the second region.   
     
     
         9 . The fiber structure according to  claim 1 , wherein
 the weaving yarn or the knitting yarn of the first suspension layer reaches a surface of the second fiber layer facing the third fiber layer and is folded back, and   the weaving yarn or the knitting yarn of the second suspension layer reaches a surface of the second fiber layer facing the first fiber layer and is folded back.   
     
     
         10 . The fiber structure according to  claim 9 , wherein
 the second fiber layer includes a folded portion of each of the weaving yarn or the knitting yam of the first suspension layer and the weaving yarn or the knitting yarn of the second suspension layer.   
     
     
         11 . The fiber structure according to  claim 9 , wherein
 the second fiber layer is composed of the weaving yarn or the knitting yarn of the first suspension layer and the weaving yam or the knitting yam of the second suspension layer.   
     
     
         12 . A shoe that adopts the fiber structure according to  claim 1 . 
     
     
         13 . A clothing item that adopts the fiber structure according to  claim 1 . 
     
     
         14 . A bag that adopts the fiber structure according to  claim 1 . 
     
     
         15 . A method of manufacturing a fiber structure, the method comprising:
 a plane layer forming step of forming a first fiber layer, a second fiber layer, and a third fiber layer; and   a suspension layer forming step of forming a first suspension layer by stretching a weaving yarn or a knitting yarn between the first fiber layer and the second fiber layer and forming a second suspension layer by stretching a weaving yarn or a knitting yarn between the second fiber layer and the third fiber layer.   
     
     
         16 . A method of manufacturing a fiber structure, the method comprising:
 an outer layer forming step of forming a first fiber layer and a third fiber layer; and   an inner layer forming step of forming a second fiber layer by causing, between the first fiber layer and the third fiber layer, a weaving yarn or a knitting yarn drawn from the first fiber layer toward the third fiber layer to cross a weaving yarn or a knitting yarn drawn from the third fiber layer toward the first fiber layer, forming a first suspension layer by causing the weaving yarn or the knitting yarn drawn from the first fiber layer to reach the second fiber layer and return to the first fiber layer, and forming a second suspension layer by causing the weaving yarn or the knitting yarn drawn from the third fiber layer to reach the second fiber layer and return to the third fiber layer.