Sheet member container

Abstract

A sheet member container configured to include one or more sheet members including a bag-body forming sheet member including an outer film layer and an inner film layer that are stacked on each other. The sheet member container includes a container main body, an extending piece extending from the container main body, a containing portion that is formed continuously over an interior of the container main body and an interior of the extending piece, the containing portion storing contents, a filling port that communicates between a portion of the interior of the container main body in the containing portion and an external space of the sheet member container, and a bag body that is made out of the bag-body forming sheet member, the bag body surrounding the containing portion.

1 . A sheet member container configured to include one or more sheet members including a bag-body forming sheet member including an outer film layer and an inner film layer that are stacked on each other, the sheet member container comprising:
 a container main body,   an extending piece extending from the container main body,   a containing portion that is formed continuously over an interior of the container main body and an interior of the extending piece, the containing portion storing contents,   a filling port that communicates between a portion of the interior of the container main body in the containing portion and an external space of the sheet member container, and   a bag body that is made out of the bag-body forming sheet member, the bag body surrounding the containing portion,   
       wherein
 the bag-body forming sheet member includes a bag-body sealing portion that is a portion in which the outer film layer and the inner film layer are attached together, and a non-attached region where the outer film layer and the inner film layer are partially not attached, the bag-body forming sheet member also including a filling portion that allows a filler to be contained between layers of the outer film layer and the inner film layer in the non-attached region, 
 the extending piece includes an inlet through which the filler is inputted into the filling portion, 
 the sheet member container comprises a peripheral edge sealing portion in which the one or more sheet members are folded and in which peripheral edge portions of a sheet member of an innermost layer included in the one or more sheet members are attached to each other, 
 the peripheral edge sealing portion defines the containing portion, 
 the peripheral edge sealing portion has a portion disposed in a region outside the inlet in the extending piece, and 
 the containing portion is sealed from the external space except for the filling port. 
 
     
     
         2 . The sheet member container according to  claim 1 , wherein the filling portion includes a first extending filling portion disposed on one side and a second extending filling portion disposed on the other side with the containing portion of the interior of the extending piece being disposed between the extending filling portions in a thickness direction of the extending piece, and
 the inlet is formed in a portion of the outer film layer that defines at least one of the first extending filling portion and the second extending filling portion.   
     
     
         3 . The sheet member container according to  claim 1 , wherein an inner edge of the peripheral edge sealing portion in the extending piece is aligned with an inner edge of the bag-body sealing portion in the extending piece, or disposed on an outer side than the inner edge of the bag-body sealing portion in the extending piece. 
     
     
         4 . The sheet member container according to  claim 1 , wherein an inner edge of the peripheral edge sealing portion in the extending piece is aligned with an outer edge of the bag-body sealing portion in the extending piece. 
     
     
         5 . The sheet member container according to  claim 1 , wherein an inner edge of the peripheral edge sealing portion in the extending piece is separated from an outer edge of the bag-body sealing portion in the extending piece. 
     
     
         6 . The sheet member container according to  claim 1 , wherein in a tip of the extending piece, the outer film layer and the inner film layer are not attached to each other, and a portion in which the layers are not attached constitutes the inlet. 
     
     
         7 . The sheet member container according to  claim 1 , further comprising:
 an inner bag disposed inside the bag body, wherein the inner bag is made out of an inner-bag forming sheet member that is a sheet member of an innermost layer included in the one or more sheet members.   
     
     
         8 . The sheet member container according to  claim 7 , wherein the inner-bag forming sheet member is formed into the same shape as a shape of the bag-body forming sheet member. 
     
     
         9 . The sheet member container according to  claim 1 , further comprising:
 an inner bag disposed inside the bag body, wherein the inner bag is made out of an inner-bag forming sheet member that is a sheet member of an innermost layer included in the one or more sheet members,   the bag-body forming sheet member includes a first extending portion disposed on one side and a second extending portion disposed on the other side with the containing portion of the interior of the extending piece being disposed between the extending portions in a thickness direction of the extending piece,   the inner-bag forming sheet member includes a third extending portion disposed on one side and a fourth extending portion disposed on the other side with the containing portion of the interior of the extending piece being disposed between the extending portions in the thickness direction of the extending piece, and   the extending piece is formed by attaching respective peripheral edge portions of the first extending portion, the second extending portion, the third extending portion and the fourth extending portion to each other.   
     
     
         10 . The sheet member container according to  claim 9 , wherein the filling portion includes a first extending filling portion disposed on one side and a second extending filling portion disposed on the other side with the containing portion of the interior of the extending piece being disposed between the extending filling portions in the thickness direction of the extending piece, and
 the inlet is formed in a portion of the outer film layer that defines at least one of the first extending filling portion and the second extending filling portion.   
     
     
         11 . The sheet member container according to  claim 1 , wherein the container main body includes a body portion and a bottom portion, and
 the extending piece extends from an upper end of the container main body.   
     
     
         12 . The sheet member container according to  claim 1 , wherein the container main body includes a body portion, a top portion and a bottom portion, and
 the extending piece extends from a boundary between the body portion and the top portion.   
     
     
         13 . The sheet member container according to  claim 1 , further comprising:
 a valve part mounted to the filling port, wherein the valve part is switchable to an opened state where the containing portion communicates to the external space through the filling port and a closed state where the containing portion and the external space are isolated from each other.   
     
     
         14 . A method of manufacturing a contents-containing sheet member container, comprising:
 preparing, as the sheet member container, the sheet member container according to  claim 1 ,   performing, for the containing portion, at least one of a degassing treatment, and a purging treatment using an inert gas,   of filling the containing portion with the contents, and   putting the filler between layers of the outer film layer and the inner film layer in the non-attached region, wherein the preparing, performing, filling and putting are performed in this order.   
     
     
         15 . The manufacturing method of the contents-containing sheet member container according to  claim 14 , wherein in performing, the purging treatment and the degassing treatment are performed at least once in this order, and
 the filling with the contents is started from a state where the containing portion is collapsed by the degassing treatment.   
     
     
         16 . The manufacturing method of the contents-containing sheet member container according to  claim 14 , wherein in the preparing, a sheet member container comprising a valve part mounted to the filling port is prepared, the valve part being switchable to an opened state where the containing portion communicates to the external space through the filling port and a closed state where the containing portion and the external space are isolated from each other, and
 when executing the degassing treatment or the purging treatment the valve part is switched to the opened state.   
     
     
         17 . The manufacturing method of the contents-containing sheet member container according to  claim 14 , wherein in the putting,
 after filling, with the filler, a space between the outer film layer and the inner film layer in the non-attached region,   the outer film layer and the inner film layer are attached together to form a filling portion sealing seal that seals the filling portion, and at the same time and the same location as in the filling portion sealing seal, sheet members of the innermost layer are attached to each other to form a containing portion sealing seal.   
     
     
         18 . The manufacturing method of the contents-containing sheet member container according to  claim 17 , wherein the contents are liquid, and
 the filling is performed so that a liquid level of the contents after the filling is a position lower than the containing portion sealing seal.   
     
     
         19 . The manufacturing method of the contents-containing sheet member container according to  claim 18 , wherein the filling is performed in a state where the sheet member container is tilted. 
     
     
         20 . The manufacturing method of the contents-containing sheet member container according to  claim 15 , further comprising, after the putting, cutting off the extending piece.