Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1982-09-28
1984-11-27
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264267, B29C 508, B29D 900, B29D 3100
Patent
active
044850654
ABSTRACT:
A bottle closure is formed by: forming a frusto-conical hollow sealing member having an open lower end, of a soft synthetic-resin, and disposing such member in a molding die defining a T-shaped cavity with an upper end of the member being projected into a horizontal portion of the cavity. A molten hard synthetic-resin is injected into the cavity through the open end of the member. Such hard resin is cooled to form a closure cap having embedded therein the upper end of the member, thereby integrally mounting the sealing member with a closure cap.
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patent: 3709973 (1973-01-01), Maltby
patent: 3915608 (1975-10-01), Hujik
patent: 4040670 (1971-08-01), Williams
Hatakeyama Yoshiharu
Kozuka Shinichi
Hoag Willard E.
Yoshida Industry Co. Ltd.
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