Blow molded container with improved neck with locking teeth and

Details Blow molded container with improved neck with locking teeth and Blow molded container with improved neck with locking teeth and

1997-03-06

1998-10-27

Marschel, Ardin H.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Introducing material under pressure into mold

264 5, 264 13, 264464, 264478, 264632, 264500, 264503, 264570, 264572, 264239, 264299, B28B 500

Patent

active

058274715

ABSTRACT:
A blow molded container is provided which includes a neck portion having locking teeth with features which ensure the proper formation of the teeth. Specifically, the container neck portion includes an annular inclined surface extending from both the upper and lower sides of the teeth, while all edges of the teeth are rounded. The annular inclined surfaces and the rounded edges ensure that the teeth are formed with sufficient material to ensure strong, sturdy teeth devoid of weak areas, holes or cracks. A method of forming the container is also provided which includes rounding all edges of the teeth as a parison abuts molds so as to inhibit undesirable stretching of the material forming the teeth. The method may also include forming the annular inclined surfaces to further inhibit undesirable stretching of the material forming the teeth thus ensuring proper formation of the teeth.

REFERENCES:
patent: 3881623 (1975-05-01), Landen
patent: 5238130 (1993-08-01), Marques et al.
patent: 5553727 (1996-09-01), Molinaro

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