| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a syringe gasket excellent in performance such as sealing performance, sliding performance, durability against repetition of sliding, and chemical resistance.SOLUTION: A base material gasket 1 comprises: a wetted part 2 that contacts a chemical solution in a syringe and does not contact an inner wall of the syringe at the time of sliding; a sliding part 3 that contacts the inner wall of the syringe at the time of sliding; and a fitting hole 4 into which a plunger rod is fitted. An inert film 5 is laminated on the wetted part 2 and the sliding part 3. By arranging the inert film 5 in this manner and forming polymer chains on a surface of the inert film 5 on the sliding part 3 and the wetted part 2, chemical resistance of the gasket 1 is improved and sealing performance and sliding performance can be simultaneously realized.</p> |
