| 摘要 |
PURPOSE:To eliminate not only wearing of a laminated sheet but also mixing of a fragment of a plastic sheet within a medical fluid in a vial vessel, by a method wherein parts of a rubber plug main body coming into contact with the inside of a port of the vessel and the medical fluid are laminated with a specific polyethylene sheet. CONSTITUTION:The title rubber plug is comprised by laminating the surface 5 of a rubber plug main body 1 having an annular leg part 7, which comes into contact with the inside 4 of a port of a vessel and a medical fluid, with a polyethylene sheet 3. Synthetic rubber or natural rubber such as butyl rubber, isoprene rubber, butadiene rubber, halogenated butyl rubber, silicone rubber is mentioned as a material of the rubber plug main body 1. Mean molecular weight of a material of the polyethylene sheet 3 laminating the rubber plug main body is 1300000-5500000, preferably 2000000-5000000. Since the polyethylene is rich in self-lubricity, the rubber plug can be inserted smooth into a port of the vial vessel. Since the polyethylene is rich in wear resistance, it does not happen that the polyethylene is worn and its fragment is mixed into the medical fluid in the vial vessel even if the rubber plug is plugged into the vial vessel. |
