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
1993-10-28
1997-11-11
Ortiz, Angela Y.
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
264322, B29C 3910
Patent
active
056860404
ABSTRACT:
A method and an apparatus for economically manufacturing gasketed closures is described. Gasket material is placed within the closure and subsequently reformed to provide a gasket profile capable of forming an effective seal when the closure is applied to a container. The gasket material may be deposited in the closure as a hot-melt or as a preformed cut-out. The deposited material is subsequently reformed to have a desired profile by inserting a compression punch or a roller into the closure. The invention is adapted for the use of non-PVC containing materials such as certain thermoplastic elastomer materials which are non-flowable in a molten state and which may have a viscosity index of greater than about 40 meter-grams torque at 175.degree. C. The gasket materials may optionally be foamed prior to reforming to create a finished gasket possessing a high density area more resistant to damage when the closure is applied to a container.
REFERENCES:
patent: 2654914 (1953-10-01), Maier
patent: 3547746 (1970-12-01), Gwinner
patent: 3557030 (1971-01-01), Simons
patent: 3689625 (1972-09-01), Zipper
patent: 4088730 (1978-05-01), Wilde
patent: 4304744 (1981-12-01), Stroud
patent: 4497765 (1985-02-01), Wilde et al.
patent: 4738606 (1988-04-01), Christiansen
patent: 5104603 (1992-04-01), Saitoh
patent: 5340525 (1994-08-01), Czernik
Ortiz Angela Y.
White Cap, Inc.
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