Container

Abstract

A method for manufacturing a large capacity self-standing container at a low cost. A container comprises a lower container member and an upper container member joined at joint portions. The container has a content space formed by a lower container face and an upper container face, and lower flanges. The lower container face has a concave bottom container face at the bottom, which forms a concave bottom face wherein an object to be contained is fixed. The container is structured so that when at least one of the lower flanges and the bottom container face are arranged on a horizontal plane, a line perpendicularly projected to the horizontal surface from the gravity center of the container passes an area framed by a contact portion between the at least one of the lower flanges and the horizontal surface and a contact portion between the bottom container face and the horizontal surface.

1 . A container, having a storage space, comprising:
 a first storage member and a second storage member, wherein:   the first storage member has a first storage surface and a first flange extending from an edge of the first storage surface,   the first storage surface has a bottom storage surface forming a bottom surface in a predetermined first direction on which a storage article is disposed,   the first flange has a first lower flange extending along a second direction transverse to the first direction,   the second storage member has a second storage surface and a second flange extending from an edge of the second storage surface, and   the second flange has a second lower flange extending along the second direction,   the first and second storage members are bonded together at the edges of the first and second storage surfaces such that the first and second storage surfaces define the storage space, and   when at least one of the first lower flange and the second lower flange and the bottom storage surface are placed on a horizontal plane, a line for projecting the center of gravity of the container perpendicularly to the horizontal plane passes through a region which is surrounded by a contact part between at least one of the first and second lower flanges and the horizontal plane and a contact part between the bottom storage surface and the horizontal plane, and the container freely stands on the horizontal plane.   
     
     
         2 . The container as defined in  claim 1 , wherein, when the storage article is disposed on the bottom surface and at least one of the first and second lower flanges and the bottom storage surface are placed on the horizontal plane, a line for projecting the center of gravity of the container perpendicularly to the horizontal plane passes through the region which is surrounded by the contact part between at least one of the first and second lower flanges and the horizontal plane and the contact part between the bottom storage surface and the horizontal plane, and the container freely stands on the horizontal plane. 
     
     
         3 . The container as defined in  claim 1 , wherein the bottom surface and the bottom storage surface have a concave shape. 
     
     
         4 . The container as defined in  claim 1 , wherein the bottom surface has a convex shape and the bottom storage surface has a concave bottom storage surface and a convex bottom storage surface. 
     
     
         5 . The container as defined in  claim 4 , wherein the concave bottom storage surface is formed along a peripheral contour of the convex bottom storage surface as viewed from the first direction. 
     
     
         6 . The container as defined in  claim 1 , wherein each of the first and second storage members is flexible. 
     
     
         7 . The container as defined in  claim 1 , wherein at least one of the first and second lower flanges at least partially comes in contact with the horizontal plane. 
     
     
         8 . The container as defined in  claim 1 , wherein the bottom storage surface has an arcuate peripheral contour as viewed from the first direction. 
     
     
         9 . The container as defined in  claim 1 , wherein:
 the first flange has a first right flange extending from an edge of the first storage surface to one side in the second direction and along the first direction, and a first left flange extending from the edge of the first storage surface to the other side in the second direction and along the first direction,   the second flange has a second right flange extending from an edge of the second storage surface to one side in the second direction and along the first direction, and a second left flange extending from the edge of the second storage surface to the other side in the second direction and along the first direction, and   the first right flange, the first left flange, the second right flange and the second left flange are inclined such that their upper ends on the other side in the first direction are located to the first storage surface side with respect to their lower ends on one side in the first direction as viewed from one side in the second direction.   
     
     
         10 . The container as defined in  claim 1 , wherein the storage space is filled with gas.