| 摘要 |
PROBLEM TO BE SOLVED: To provide a film pack discharge tool capable of preventing biting-in of a film when discharging a fluid material from a film pack, and capable of reducing a quantity in the fluid material remaining in the film pack after use.SOLUTION: The film pack discharge tool is provided for discharging the fluid material by an extrusion gun by inserting the fluid material stored in the film pack into a cylindrical holder. In the film pack discharge tool, a piston slidable in the longitudinal direction is installed inside the cylindrical holder, and the piston is composed of a piston head part and a piston body part, and the body part is composed of a base part and an expandable-contractible collar part provided on the pressing surface side of the base part, and the head part is displaceably installed in the axial direction in the body part, and the piston head part is pressed to the piston body part in the axial direction, so that the collar part diametrically expands and prevents the biting-in of the film between a cylindrical holder inner surface and a piston outer peripheral surface. |
