Liquid container and double container

Abstract

A ring-like reinforcement part 2 is secured to an upper end face of a bottomed cylindrical container main body 1. The container main body 1 is formed of a flexible film-like member which is composed of polyethylene, polypropylene or the like. The reinforcement part 2 has strength enough to prevent the container main body 1 from greatly deformed and to prevent liquid, such as adhesive agent, coating material or the like stored in the container main body 1 from overflowing when the container main body 1 is lifted up through the reinforcement part 2.

1 . A liquid container comprising a bottomed cylindrical container main body having a bottom part at a lower end part thereof and opening at an upper end thereof, and an annular reinforcement part disposed at an upper end part of said container main body, said container main body being entirely formed of a flexible thin film-like member, and said reinforcement part having strength enough to retain a constant shape in section.  
   
   
       2 . A liquid container according to  claim 1 , wherein said reinforcement part has a protrusion formed on an outer peripheral surface thereof and protruding radially outward with respect to an outer periphery of said container main body.  
   
   
       3 . A liquid container according to  claim 2 , wherein said protrusion is disposed at an upper end part of an outer peripheral surface of said reinforcement member.  
   
   
       4 . A liquid container according to  claim 2 , wherein said protrusion is annularly formed on said reinforcement part over an entire periphery thereof.  
   
   
       5 . A liquid container according to  claim 4 , wherein said protrusion is disposed on an upper end part of an outer peripheral surface of said reinforcement part.  
   
   
       6 . A liquid container according to  claim 1 , wherein said container main body and said reinforcement part are formed of a resin, and said reinforcement part is fused to an upper end part of said container main body.  
   
   
       7 . A liquid container according to  claim 6 , wherein said reinforcement part has a protrusion formed on an outer peripheral surface thereof and protruding radially outward with respect to an outer periphery of said container main body.  
   
   
       8 . A liquid container according to  claim 7 , wherein said protrusion is disposed at an upper end part of an outer peripheral surface of said reinforcement member.  
   
   
       9 . A liquid container according to  claim 7 , wherein said protrusion is annularly formed on said reinforcement part over an entire periphery thereof.  
   
   
       10 . A liquid container according to  claim 9 , wherein said protrusion is formed on an upper end part of an outer peripheral surface of said reinforcement part.  
   
   
       11 . A double container comprising a cylindrical outer container which is open at least at an upper end part thereof, and a bottomed cylindrical inner container having a bottom part at a lower end part thereof and opening at an upper end thereof, 
 said inner container including a bottomed cylindrical container main body having a bottom part at a lower end part thereof and opening at an upper end thereof, and an annular reinforcement part disposed at an upper end part of said container main body, said container main body being entirely formed of a flexible thin film-like member, said reinforcement part having strength enough to retain a constant shape in section, and said reinforcement part having a protrusion formed on an outer peripheral surface thereof and protruding radially outward with respect to an outer periphery of said container main body,    said inner container being inserted into said outer container through the upper end opening part of said outer container, and said protrusion being placed on an upper end face of said outer container.    
   
   
       12 . A double container according to  claim 11 , wherein said protrusion is disposed on an upper end part of an outer peripheral surface of said reinforcement part.  
   
   
       13 . A double container according to  claim 11 , wherein said protrusion is annularly formed on said reinforcement part over an entire periphery thereof.  
   
   
       14 . A double container according to  claim 13 , wherein said protrusion is disposed on an upper end part of an outer peripheral surface of said reinforcement part.  
   
   
       15 . A double container according to  claim 11 , wherein said container main body and said reinforcement part are formed of a resin, and said reinforcement part is fused to an upper end part of said container main body.  
   
   
       16 . A double container according to  claim 15 , wherein said protrusion is disposed on an upper end part of an outer peripheral surface of said reinforcement part.  
   
   
       17 . A double container according to  claim 15 , wherein said protrusion is annularly formed on said reinforcement part over an entire periphery thereof.  
   
   
       18 . A double container according to  claim 17 , wherein said protrusion is disposed on an upper end part of an outer peripheral surface of said reinforcement part.