Air bag

Abstract

An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected. A gusset is formed in a base part of the triangle or in a lower base part of the trapezoid by folding the synthetic resin film inward. Flexible reinforcing covers having a triangle or trapezoid shape in accordance with the triangle or trapezoid shape of the bag are laminated respectively on one surface and the other surface of the bag. A short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag.

1 . An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected, wherein
 a gusset is formed in a base part of the triangle or a lower base part of the trapezoid by folding the synthetic resin film inward.   
     
     
         2 . The air bag according to  claim 1 , wherein flexible reinforcing covers having a triangle or trapezoid shape in accordance with the shape of the bag are laminated respectively on one surface and the other surface of the bag. 
     
     
         3 . The air bag according to  claim 2 , wherein the one surface and the other surface of the bag are welded to each other along both sides of the triangle or both legs of the trapezoid, and the reinforcing covers are bonded respectively to the one surface and the other surface of the bag along the both sides of the triangle or the both legs of the trapezoid of the bag. 
     
     
         4 . The air bag according to  claim 1 , wherein a short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag. 
     
     
         5 . The air bag according to  claim 4 , wherein the air inlet tube and the air outlet tube are made of a synthetic resin film. 
     
     
         6 . An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected, wherein
 flexible reinforcing covers having a triangle or trapezoid shape in accordance with the shape of the bag are laminated respectively on one surface and the other surface of the bag.   
     
     
         7 . The air bag according to  claim 6 , wherein the one surface and the other surface of the bag are welded to each other along both sides of the triangle or both legs of the trapezoid, and the reinforcing covers are bonded respectively to the one surface and the other surface of the bag along the both sides of the triangle or the both legs of the trapezoid of the bag. 
     
     
         8 . The air bag according to  claim 6  or  7 , wherein a short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag. 
     
     
         9 . The air bag according to  claim 8 , wherein the air inlet tube and the air outlet tube are made of a synthetic resin film. 
     
     
         10 . An air bag to be mounted in a cargo container for facilitating discharge of powder granular material from a liner filled with the powder granular material, the air bag including a synthetic resin film bag that assumes a triangle or trapezoid shape in a state where the bag has a flat form with no air injected, wherein
 a short air outlet tube, as well as an air inlet tube, is connected to one side part of the triangle or one leg part of the trapezoid of the bag.   
     
     
         11 . The air bag according to  claim 10 , wherein the air inlet tube and the air outlet tube are made of a synthetic resin film. 
     
     
         12 . The air bag according to  claim 1 , being arranged between an inner surface of a side wall as well as a top surface of a bottom wall of the container and an outer surface of a side wall as well as an outer surface of a bottom wall of the liner that respectively face the inner surface of the side wall as well as the top surface of the bottom wall of the container, in such a manner that the base of the triangle or the lower base of the trapezoid of the bag is adjusted to one end wall of the liner on which an outlet is formed. 
     
     
         13 . The air bag according to  claim 6 , being arranged between an inner surface of a side wall as well as a top surface of a bottom wall of the container and an outer surface of a side wall as well as an outer surface of a bottom wall of the liner that respectively face the inner surface of the side wall as well as the top surface of the bottom wall of the container, in such a manner that the base of the triangle or the lower base of the trapezoid of the bag is adjusted to one end wall of the liner on which an outlet is formed. 
     
     
         14 . The air bag according to  claim 10 , being arranged between an inner surface of a side wall as well as a top surface of a bottom wall of the container and an outer surface of a side wall as well as an outer surface of a bottom wall of the liner that respectively face the inner surface of the side wall as well as the top surface of the bottom wall of the container, in such a manner that the base of the triangle or the lower base of the trapezoid of the bag is adjusted to one end wall of the liner on which an outlet is formed.