Synthetic resin liquid container

Abstract

A synthetic resin liquid container for containing drinking water, juice, milk and other liquids is provided. The synthetic resin liquid container has a body that can substantially reduce its volume when a vertical and/or twisting stress is applied to the body, and a form-retaining means to be used after compression of the container body for keeping it compressed.

What is claimed is:  
     
         1 . A synthetic resin liquid container comprising: 
 a container body having a bottom, an opening, a side wall which is made of a flexible and relatively hard plastic synthetic resin, and a form that resists oscillation and vertical stress during transport with liquid therein and facilitates operation of substantially reducing the volume of the container body by applying a vertical and/or twisting force when the liquid has been emptied from the body;    cap member for covering the opening; and    retainer means for retaining a reduced portion of the container body in a reduced state, wherein    the side wall includes an upper portion and a lower body portion, the upper portion having a resilient neck portion and a taper portion, and the lower body portion having one spiral oblique hollow groove extending between two end rims of the lower body portion.    
     
     
         2 . The synthetic resin liquid container according to  claim 1 , wherein the side wall is thin and the groove on the lower body portion is so spirally arranged thereby facilitating an operation of substantially reducing the volume of container body.  
     
     
         3 . The synthetic resin liquid container according to  claim 2 , wherein said lower body portion comprises sequentially reduced radiuses from both upper and bottom end rims of the lower body portion toward the middle of the lower body portion.  
     
     
         4 . The synthetic resin liquid container according to  claim 1 , wherein the groove is a recess.  
     
     
         5 . The synthetic resin liquid container according to  claim 1 , wherein said container body further comprises a belt attached to the opening of the container body, and the best is in turn connected to a cap, for an aid in keeping the container compressed.  
     
     
         6 . The synthetic resin liquid container according to  claim 1 , wherein said opening of the container body can be embedded into the container body by pressing the opening for keeping the container compressed, for an aid in keeping the container compressed.  
     
     
         7 . The synthetic resin liquid container according to  claim 1 , wherein the retainer means is shorter than the height of the container body and has a retaining body with at least two legs suspended from the neck portion, each leg having a claw portion which engages with the groove or a rim of the bottom of the container body for retaining the reduced container body.  
     
     
         8 . The synthetic resin liquid container according to  claim 1 , wherein the retainer means is provided on the lower body portion, and the retainer means has a retaining body with at least two legs which are shorter than the side wall of the container body, each of the legs extends in upward direction and has at least one claw that can be engaged with the groove or a rim of the bottom of the container body to retain the reduced portion of the container body.  
     
     
         9 . The synthetic resin liquid container according to  claim 1 , wherein a height of said upper portion being approximately equal to one-fourth of a height of the container body.  
     
     
         10 . The synthetic resin liquid container according to  claim 1 , wherein a height of said upper portion being equal to one-fourth of a height of the container body.