Bottles and jars – Neck – Structure to receive a particular closure
Patent
1997-04-28
1999-10-12
Cronin, Stephen K.
Bottles and jars
Neck
Structure to receive a particular closure
215 45, 215344, 264536, B65D 4148, B29C 2500
Patent
active
059643625
ABSTRACT:
The neck of a container has a smooth seal surface engaged by the inner skirt or plug of a cap. Such surface is free of trim and parting line flaws which are characteristic of blow-molded jars because the surface is formed in such a way that the seal surface is not in contact with mold parting lines and further the trim of the neck (excess plastic) is located away from the sealing surface. In one form of the disclosure, above the sealing surface the neck wall slants outward and then bends upward-inward in a short, tapered stretch about 18.degree. to the horizontal which engages the underside of the cap disk to compress against the disk or a liner or foil. In another form of the invention, above the seal surface the neck extends outward and the upward and then inward in a flange which is trimmed along a line which has a circumference no less than the circumference of the seal surface. The exterior of the neck is formed with shoulders which engage over locking beads on the interior of the outer skirt of the cap.
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Luch Daniel
Repp Richard E.
Sandor Laszlo G.
Caplan Julian
Cronin Stephen K.
Newhouse Nathan
Portola Packaging, Inc.
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