Packing material

Abstract

A packing member for packing an article includes a medium accommodating portion accommodating medium, a non-return valve for passing the medium toward the medium accommodating portion along a longitudinal direction of the medium accommodating portion and for stopping the medium in an opposite direction away from the medium accommodating portion, and a flow path, formed by welding the non-return valve to the medium accommodating portion, for passing the medium. The flow path includes a reference flow path portion extending in the longitudinal direction and an expanding flow path portion having a width larger than that of the reference flow path portion.

1 . A packing member for packing an article, said packing member comprising:
 a medium accommodating portion accommodating medium;   a non-return valve for passing the medium toward said medium accommodating portion along a longitudinal direction of said medium accommodating portion and for stopping the medium in an opposite direction away from said medium accommodating portion; and   a flow path, formed by welding said non-return valve to said medium accommodating portion, for passing the medium, said flow path including a reference flow path portion extending in the longitudinal direction and an expanded flow path portion having a width larger than that of said reference flow path portion.   
     
     
         2 .- 7 . (canceled)