Synthetic resin container

Abstract

A synthetic resin container including a mouth, a shoulder, a body and a bottom and forming a space for accommodating contents, in which the shoulder is provided with a pair of protruding ribs configured to be disposed opposite to each other on a front side and a rear side across a central axis line of the container and to be foldable when the shoulder is flattened; the pair of protruding ribs are each formed into a curved shape with central portions protruded toward the mouth side in a front view or a rear view; and both ends of one of the pair of protruding ribs are connected to both ends of another one of the pair of protruding rib, respectively, at intermediate positions of the shoulder.

1 . A synthetic resin container comprising a mouth, a shoulder, a body and a bottom and forming a space for accommodating contents, wherein,
 the shoulder is provided with a pair of protruding ribs configured to be disposed opposite to each other on a front side and a rear side across a central axis line of the container and to be foldable when the shoulder is flattened;   each of the pair of protruding ribs is formed into a curved shape in which a central portion protrudes toward the mouth side in a front view or a rear view; and   both ends of one of the pair of protruding ribs are connected to both ends of another one of the pair of protruding ribs, respectively, at intermediate positions of the shoulder.   
     
     
         2 . The synthetic resin container according to  claim 1 , wherein the body has a flat shape with a width larger than a thickness. 
     
     
         3 . The synthetic resin container according to  claim 1 , wherein respective central portions of the protruding ribs are adjacent to a base end portion of the mouth. 
     
     
         4 . The synthetic resin container according to  claim 1 , wherein a triangle flat plane is provided to each of a pair of connecting portions where the both ends of one of the protruding ribs are connected with the both ends of the another one of the protruding ribs, respectively. 
     
     
         5 . The synthetic resin container according to  claim 2 , wherein respective central portions of the protruding ribs are adjacent to a base end portion of the mouth. 
     
     
         6 . The synthetic resin container according to  claim 2 , wherein a triangle flat plane is provided to each of a pair of connecting portions where the both ends of one of the protruding ribs are connected with the both ends of the another one of the protruding ribs, respectively. 
     
     
         7 . The synthetic resin container according to  claim 3 , wherein a triangle flat plane is provided to each of a pair of connecting portions where the both ends of one of the protruding ribs are connected with the both ends of the another one of the protruding ribs, respectively. 
     
     
         8 . The synthetic resin container according to  claim 5 , wherein a triangle flat plane is provided to each of a pair of connecting portions where the both ends of one of the protruding ribs are connected with the both ends of the another one of the protruding ribs, respectively.