Process for the production of a resin-laminated rubber closure f

Details Process for the production of a resin-laminated rubber closure f Process for the production of a resin-laminated rubber closure f

1987-07-17

1992-01-07

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Flash or sprue removal type

264250, B29C 3502, B29C 4314, B29C 4318

Patent

active

050789414

ABSTRACT:
A process for molding a resin-laminated rubber closure for a medical vial. This closure includes an annular leg part to be inserted into the mouth of the vial, which leg part is notched or cut at least at one position and a flange part to be contacted with the front surface of the vial mouth. The outer and inner surfaces of the annular leg part are laminated with a chemical-resistant resin film except for the upper end of the leg part so that the rubber surface is exposed at the upper end of said leg portion. The leg part has at least one protrusion on the outer surface of the laminated portion.

REFERENCES:
patent: 2705211 (1955-03-01), De Wyk
patent: 3760969 (1973-09-01), Shimamoto et al.
patent: 4193402 (1980-03-01), Rumpler
patent: 4301936 (1981-11-01), Percarpio
patent: 4441621 (1984-04-01), Matukura et al.
patent: 4459256 (1984-07-01), Ziegler
patent: 4614276 (1986-09-01), Ihara et al.

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