Plastic vessel preform and mold for forming the same

Details Plastic vessel preform and mold for forming the same Plastic vessel preform and mold for forming the same

1994-04-20

1995-09-05

Nold, Charles R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 369, 428 3692, 428 357, 428 366, 428 367, 4285428, 215 121, 215 122, 215 42, 215 44, 425525, 425533, B29D 100, B29C 3312

Patent

active

054477662

ABSTRACT:
A plastic vessel preform includes a neck portion having an outer layer formed by an insert piece (20) which includes a thread portion (22a) and a support ring (28). The support ring (28) includes a bond reinforcing portion (36) integrally formed therein in a direction perpendicular to the axis or the preform body (34). The bond reinforcing portion (36) strengthens the radial bond in the insert piece (20) so that the mechanical strength at the neck portion (32) of the preform (30) can be greatly increased.

REFERENCES:
patent: 3115682 (1959-12-01), Soubier et al.
patent: 4307137 (1981-12-01), Ota et al.
patent: 4507258 (1985-03-01), Aoki
patent: 4572811 (1986-02-01), Ota et al.
patent: 4715504 (1987-12-01), Chang et al.
patent: 4836971 (1989-06-01), Denis et al.

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