Rotational molding method

Details Rotational molding method Rotational molding method

2009-03-05

2010-11-16

Del Sole, Joseph S (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S311000, C264S327000

Reexamination Certificate

active

07833460

ABSTRACT:
A plurality of molded parts are rotationally molded by providing a common mold with plurality of molding chambers, each arranged for forming a respective one of the molded parts therein. The molding chambers are joined with one another by vent gates communicating gases between the molding chambers such that some of the molding chambers are vented directly to a surrounding exterior through an exterior vent and other ones of the molding chambers are vented to the exterior via the vent gates. The molded parts can be separated from one another after being released from the molding chambers of the mold.

REFERENCES:
patent: 6726864 (2004-04-01), Nasr et al.
patent: 2007/0158629 (2007-07-01), Laws et al.
Nugent, Rotational Molding: A Practical Guide, 2001, available from www.paulnugent.com, USA, pp. 320, 508-519.

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