Delamination container

Abstract

A delamination container includes: an outer layer body constituting an outer shell of the container; and an inner layer body that is laminated on an inner side of the outer layer body in a manner such that the inner layer body is peelable from the outer layer body, that contains an ethylene-vinyl alcohol copolymer resin, and that is deformable to undergo volume reduction. The outer layer body includes an outer layer body's inside sub-layer that is located adjacent to the inner layer body and that is made of a polypropylene resin and an outer layer body's outside sub-layer that is located on an outer side of the container relative to the outer layer body's inside sub-layer and that is made of a polyethylene resin.

1 . A delamination container, comprising:
 an outer layer body constituting an outer shell of the container; and an inner layer body that is laminated on an inner side of the outer layer body in a manner such that the inner layer body is peelable from the outer layer body, that contains an ethylene-vinyl alcohol copolymer resin, and that is deformable to undergo volume reduction, wherein   the outer layer body includes an outer layer body's inside sub-layer that is located adjacent to the inner layer body and that is made of a polypropylene resin and an outer layer body's outside sub-layer that is located on an outer side of the container relative to the outer layer body's inside sub-layer and that is made of a polyethylene resin.   
     
     
         2 . The delamination container of  claim 1 , wherein the polyethylene resin comprises a high-density polyethylene resin. 
     
     
         3 . The delamination container of  claim 1 , further comprising:
 an innermost layer that is located on the inner side of the container relative to the inner layer body and that is made of a modified polyolefin resin.   
     
     
         4 . The delamination container of  claim 1 , wherein the outer layer body further includes an outer shell sub-layer that is made of a resin different from the outer layer body's outside sub-layer and that is located on the outer side of the container relative to the outer layer body's outside sub-layer. 
     
     
         5 . The delamination container of  claim 1 , further comprising:
 a strip-shaped adhesive layer extending between the outer layer body and the inner layer body along a center axis of the container.   
     
     
         6 . The delamination container of  claim 1 , wherein the outer layer body is provided in a bottom portion thereof with an ambient air introduction hole in the form of a bottom crack through which ambient air is introduced between the outer layer body and the inner layer body.