Rotational molding of orthodontic retainer

Details Rotational molding of orthodontic retainer Rotational molding of orthodontic retainer

1989-05-15

1990-06-26

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

Female mold including tamping means or means utilizing mold...

Plural female molds

425435, 425457, B29C 4104, B29C 4112

Patent

active

049367676

ABSTRACT:
A device for forming an orthodontic retainer by rotational molding. The device facilitates the production of orthodontic bite retainer appliances by providing uniform mixing of the retainer liquid/powder precursors during the period of initial setting-up to assure a smooth, uniform product. Also described is a modification for providing more than one retainer at a time, as well as a modification to provide formation of the retainer under evacuated exhaust.

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patent: 4656067 (1987-04-01), Yetter
patent: 4695244 (1987-09-01), Friesen

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