Neck of a synthetic resin bottle

Details Neck of a synthetic resin bottle Neck of a synthetic resin bottle

2005-01-25

2010-06-15

Weaver, Sue A (Department: 3781)

Bottles and jars

Neck

Structure to receive a particular closure

C215S042000, C215S045000, C220S288000

Reexamination Certificate

active

07735663

ABSTRACT:
A resource-saving neck of a synthetic resin bottle having high resistance to pressure and heat and a high, stable sealing property is provided. The part is aimed at equalizing an effect of thread-formed portions on the crystallization of a molten resin material along the circumferential direction of the part. These objectives are achieved by (1) forming screw threads of a multi-threaded screw structure on the outer surface of the neck wall, each screw thread comprising a main thread, with a starting and ending extension, with a width and height thereof being reduced gradually; (2) disposing the starting extension of a screw thread vertically above the ending extension of another thread; and (3) whitening the entire part by thermal crystallization. Sinks are prevented in the neck wall, and the height can be restricted despite increase in the diameter.

REFERENCES:
patent: 5307946 (1994-05-01), Molinaro
patent: 6006930 (1999-12-01), Dreyer et al.
patent: 6044992 (2000-04-01), Ma
patent: 6105802 (2000-08-01), French et al.
patent: 6626324 (2003-09-01), Boyd
patent: 6659297 (2003-12-01), Gregory et al.
patent: 7097056 (2006-08-01), Ozawa et al.
patent: 2002/0148800 (2002-10-01), Ozawa et al.
patent: A 10-58527 (1998-03-01), None
patent: A 2000-503944 (2000-04-01), None
patent: A 2002-53117 (2002-02-01), None

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