| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piston which includes both the shearing function and a sealing function, and is used for pushing liquid material out of a cartridge. <P>SOLUTION: The piston is used for pushing the liquid material out of the cartridge 15. In the style wherein the material is stored within a sheet bag, the piston 1 has an annular shearing edge 4 for peeling the sheet bag off the inside of the cartridge 15, and an annular sealing member 5 for sealing the piston 1 inside the cartridge 15. The shearing edge 4 and the sealing member 5 are joined to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT |
