Method of transporting saponified ethylene-vinyl ester-based copolymer pellets

Abstract

There is provided a method of transporting saponified ethylene-vinyl ester-based copolymer pellets comprising maintaining an interior of a hermetic container in a state of higher pressure than ambient atmosphere during a transport of the saponified ethylene-vinyl ester-based copolymer pellets encased in the hermetic container. The method is capable of transporting dry saponified ethylene-vinyl ester-based copolymer pellets in large quantities at one time without the moisture absorption of the pellets in the course of the transport of the pellets.

1 . A method of transporting saponified ethylene-vinyl ester-based copolymer pellets comprising:
 maintaining an interior of a hermetic container in a state of higher pressure than ambient atmosphere during a transport of the saponified ethylene-vinyl ester-based copolymer pellets encased in the hermetic container.   
     
     
         2 . The method according to  claim 1 , wherein a dry gas with a moisture percentage of not more than 0.8 wt % is used for applying pressure to the interior of the hermetic container. 
     
     
         3 . The method according to  claim 2 , wherein the dry gas is nitrogen gas. 
     
     
         4 . The method according to any one of  claim 1 , wherein internal pressure of the hermetic container during the transport is more than 1 atm and not more than 100 atm. 
     
     
         5 . The method according to  claim 1 , wherein a volume of the hermetic container is in a range of 30 to 60 m 3 . 
     
     
         6 . A method of transporting saponified ethylene-vinyl ester-based copolymer pellets comprising the steps of:
 encasing the saponified ethylene-vinyl ester-based copolymer pellets in a hermetic container to close the hermetic container, the hermetic container including a pressurizer for applying pressure to the interior of the container;   transporting the hermetic container to a destination; and   maintaining the interior of the hermetic container in a state of higher pressure than ambient atmosphere by using the pressurizer for applying pressure to the interior of the hermetic container during the transporting step.   
     
     
         7 . The method according to  claim 6 , wherein a dry gas with a moisture percentage of not more than 0.8 wt % is used for applying pressure to the interior of the hermetic container. 
     
     
         8 . The method according to  claim 7 , wherein the dry gas is nitrogen gas. 
     
     
         9 . The method according to  claim 6 , wherein internal pressure of the hermetic container during the transport is more than 1 atm and not more than 100 atm. 
     
     
         10 . The method according to  claim 6 , wherein a volume of the hermetic container is in a range of 30 to 60 m 3 .