Container prepared from polythylene terephthalate resin

Abstract

A PET resin container having an oxygen-capturing function and an improved level of oxygen barrier property is provided, with these performances being achieved by applying radiation to the container after the molding operation.

1 . A polyethylene terephthalate-based resin container having an oxygen-capturing property and an oxygen barrier property, which have been improved by treating said container with radiation after the molding operation.  
     
     
         2 . The polyethylene terephthalate-based resin container according to  claim 1 , wherein said container comprises a single layer of the polyethylene terephthalate resin.  
     
     
         3 . The polyethylene terephthalate-based resin container according to  claim 1 , wherein said container has at least an inner layer and an outer layer, with both layers comprising the polyethylene terephthalate-based resin.  
     
     
         4 . The polyethylene terephthalate-based resin container according to  claim 1 , wherein the polyethylene terephthalate resin to be used is blended with an oxygen barrier resin at a rate in the range of 1.0 to 30 wt. %.  
     
     
         5 . The polyethylene terephthalate-based resin container according to  claim 4 , wherein the oxygen barrier resin is a polyxylylene diamine adipamide resin (Nylon-MXD6).  
     
     
         6 . The polyethylene terephthalate resin-based container according to  claim 1 , wherein said container is treated with radiation at a dose of 20 kGy or more.  
     
     
         7 . The polyethylene terephthalate resin-based container according to  claim 1 , wherein said container has at least an intermediate layer comprising an oxygen barrier resin.  
     
     
         8 . The polyethylene terephthalate resin-based container according to  claim 7 , wherein the oxygen barrier resin is a polyxylylene diamine adipamide resin (Nylon-MXD6).  
     
     
         9 . The polyethylene terephthalate resin-based container according to  claim 7 , wherein radiation is applied to said container at a dose of 6 kGy or more  
     
     
         10 . The polyethylene terephthalate-based resin container according to  claim 1 , wherein an electron beam is used as the source of radiation.