Fiber structure and fiber structure block

Abstract

Provided is a fiber structure including: cellulose fiber disposed such that a main fiber orientation direction is a first direction; and a crosslinking material that binds a plurality of the cellulose fibers to each other, in which the first direction forms an angle of equal to or less than 45 degrees with respect to a direction of an external force applied from an outside to a bottom surface.

What is claimed is: 
     
         1 . A fiber structure comprising:
 a cellulose fiber disposed such that a main fiber orientation direction is a first direction; and   a crosslinking material that binds a plurality of cellulose fibers to each other, each of which is the cellulose fiber disposed such that the main fiber orientation direction is the first direction, wherein   the first direction forms an angle of equal to or less than 45 degrees with respect to a direction of an external force applied from an outside to an outer surface of the fiber structure.   
     
     
         2 . A fiber structure comprising:
 a cellulose fiber disposed such that a main fiber orientation direction is a first direction; and   a crosslinking material that binds a plurality of cellulose fibers to each other, each of which is the cellulose fiber disposed such that the main fiber orientation direction is the first direction, wherein   the fiber structure has an accommodation space that accommodates an accommodated article therein, and   the first direction forms an angle of equal to or less than 45 degrees with respect to a direction of an external force applied from an outside of the fiber structure toward the accommodation space.   
     
     
         3 . The fiber structure according to  claim 1 , wherein
 the first direction is a direction that forms an angle of equal to or less than 45 degrees with respect to a direction of an external force applied directly to the outer surface of the fiber structure or applied to the outer surface of the fiber structure via an external member.   
     
     
         4 . The fiber structure according to  claim 1 , wherein
 the fiber structure has a plurality of outer surfaces, each of which is the outer surface to which the external force is applied from the outside, and   the first direction forms an angle of equal to or less than 45 degrees with respect to a normal line of any one of the outer surfaces.   
     
     
         5 . The fiber structure according to  claim 4 , wherein
 the first direction forms an angle of equal to or less than 45 degrees with respect to a normal line of a largest outer surface of the plurality of outer surfaces.   
     
     
         6 . The fiber structure according to  claim 1 , wherein
 the crosslinking material contains a first resin and a second resin made of a material that is different from the first resin.   
     
     
         7 . The fiber structure according to  claim 1 , wherein
 the fiber structure includes a material that is different from the cellulose fiber and the crosslinking material.   
     
     
         8 . The fiber structure according to  claim 1 , wherein
 the fiber structure is configured of a flat plate structure in which the cellulose fibers are laminated, and   the first direction is a direction included in a plane of the flat plate structure.   
     
     
         9 . A fiber structure block comprising:
 a plurality of combinations of fiber structures each including a cellulose fiber disposed such that a main fiber orientation direction is a first direction and a crosslinking material that binds a plurality of cellulose fibers to each other, each of which is the cellulose fiber disposed such that the main fiber orientation direction is the first direction, wherein   the fiber structure block has an accommodation space that accommodates an accommodated article therein, and   the fiber structures are disposed such that the first direction forms an angle of equal to or less than 45 degrees with respect to a direction of an external force applied from an outside toward the accommodation space.