Pet bottle and method of manufacturing the same

Abstract

The present invention provides a PET bottle that is adapted such that a capacity of a container body can be extremely reduced when juice or mineral water in the container body is drunk off and the container body is discarded. The present invention proposes a method of manufacturing the PET bottle. In addition, the present invention makes it possible to extremely reduce cost for collection of PET bottles and personal expenses for cleaning and collection. The PET bottle is manufactured using a pair of cylindrical mold bodies for PET bottle that is formed in a bellows shape in a horizontal direction in an entire length or a part of the length in a longitudinal direction thereof excluding a mouth portion on a side in an inner periphery, is lower than a height of the PET bottle body when content is filled therein, and is drilled in a shape substantially the same as a PET bottle body.

1 . A PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, 
 wherein the PET bottle is manufactured using a pair of cylindrical mold bodies for PET bottle that is formed in a bellows shape in a horizontal direction in an entire length or a part of the length in a longitudinal direction thereof excluding a mouth portion on a side in an inner periphery, is lower than a height of a PET bottle body when content is filled therein, and is drilled in a shape substantially the same as the PET bottle body.    
   
   
       2 . A method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, 
 wherein the method manufactures a PET bottle body using a pair of cylindrical mold bodies for PET bottle that is formed in a bellows shape in a horizontal direction in an entire length or a part of the length in a longitudinal direction thereof excluding a mouth portion on a side in an inner periphery, is lower than a height of the PET bottle body when content is filled therein, and is drilled in a shape substantially the same as a PET bottle body, and guiding a pre-form, which is a preliminary molded production formed in a predetermined shape in advance, to the mold body and subjecting the pre-form to heat processing to force the pre-form to thermally expands.    
   
   
       3 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 2 , =p 1  wherein the cylindrical mold bodies include: ring shape mold pieces that have the same height as the folds of the bellows shape, respectively, and are divided into two to the left and right in the horizontal direction; a movable mold that is constituted by putting the ring shape mold pieces one on top of another in substantially the same number as the number of the folds of the bellows shape; a coupling member that couples the ring shape mold pieces adjacent to each other vertically such that the ring shape mold pieces are in contact closely or are slightly spaced apart from each other; and an opening/closing mechanism that operates this coupling member to perform action for causing the ring shape mold pieces adjacent to each other to come into contact or to form a space.  
   
   
       4 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 2 , 
 wherein the pre-form is PET bottle resin.    
   
   
       5 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 2 , 
 wherein the PET bottle body is formed of memory resin that memorizes a height at the time when the PET bottle body is empty.    
   
   
       6 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 3 , 
 wherein the pre-form is PET bottle resin.    
   
   
       7 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 3 , 
 wherein the PET bottle body is formed of memory resin that memorizes a height at the time when the PET bottle body is empty.    
   
   
       8 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 4 , 
 wherein the PET bottle body is formed of memory resin that memorizes a height at the time when the PET bottle body is empty.    
   
   
       9 . The method of manufacturing a PET bottle having different heights at the time when the PET bottle is filled with content and at the time when the PET bottle is empty, according to  claim 6 , 
 wherein the PET bottle body is formed of memory resin that memorizes a height at the time when the PET bottle body is empty.