| 摘要 |
PURPOSE:To eliminate additional process during the trimming of an inner bag stock into an inner bag by a method wherein the shape of an annular groove provided on the inner bag is set to coincide with the shape of the rim part of an upper cover when the inner bag stock is formed. CONSTITUTION:An inner bag stock 11a, along the peripheral edge of an upper end opening of which an annular groove 22 corresponding to the shape of a rim part 16 provided along the peripheral edge of the opening of an upper cover 13, is prepared and arranged in a spreading container main body 10 in such a manner that the inner bag stock 11a is pulled out through the upper cover 13 of the container main body 10 so as to tightly fit the annular groove 22 of the inner bag stock 11a to the rim part 16 of the upper cover 13. At that time, the pulled out inner bag stock 11a is cut off at the position indicated by the dotted line with a trimming device (not shown) in order to complete the inner bag 11. In addition, a spreading valve 24 is installed on the opening of an upper cover 15, to which the inner bag 11 is fitted, of the container main body 10 so as to fix to the rim part 16 of the upper cover 15. Now, when the spreading valve 24 is depressed, the propulsive force of a propellant in a propellant chamber 25 acts on the inner bag 11 so as to push up the inner bag in the axial direction of the container main body in order to spread the product in the inner bag 11. |
