Methods for conveying containers through an oven to produce heat

Details Methods for conveying containers through an oven to produce heat Methods for conveying containers through an oven to produce heat

1997-05-30

1999-11-30

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 69, 264134, 264277, B29C 4402

Patent

active

059937050

ABSTRACT:
Containers are conveyed through an oven on a conveyor to cause a foamable material on each container to foam and become a heat insulative layer. The containers are supported on respective holders of the conveyor, which prevent the containers from contacting one another. Preferably, the holders support the containers loosely, to enable the containers to wobble relative to the holders under the influence of oven air currents and conveyor vibration. The holders thus do not make contact with any given point on their respective containers for a time period that is sufficient to enable the holders to draw enough heat away from the container to adversely affect the foaming operation. The containers are conveyed in single file, along a serpentine path through the oven.

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patent: 5411689 (1995-05-01), Lee et al.
patent: 5490631 (1996-02-01), Iloka et al.

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