Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1985-05-23
1987-05-26
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
264549, 264550, 4253261, 425398, B29C 5110
Patent
active
046681752
ABSTRACT:
Apparatus for forming deep containers from a thermoplastic material including a first mold portion having a cavity therein defining the side and bottom configuration of the container and a second mold portion having a plunger provided for reciprocation therein and arranged so that the plunger moves into the cavity. The first mold portion is provided with a first passageway that terminates adjacent to the cavity and in the parting surface of the mold portion and a second passageway that extends therethrough into the cavity adjacent to the bottom of the container. A control apparatus is provided that directs a vacuum through the first passageway securely holding the thermoplastic against the parting surface of the first mold portion. Vacuum is then exerted into the cavity through the second passageway along with the deformation of the plastic by extension of the plug into the cavity so that the plastic conforms to the configuration defined by the cavity while maintaining a substantially uniform wall thickness free from surface blemishes caused by undue stretching or folding of the plastic sheet as it is deformed into the cavity.
REFERENCES:
patent: 2749572 (1956-06-01), Nowak
patent: 2985914 (1961-05-01), Miller
patent: 3291874 (1966-12-01), Negoro
patent: 3338997 (1967-08-01), Tigner
patent: 3357053 (1967-12-01), Lyon et al.
patent: 3497916 (1970-03-01), Reifenh/a/ user
patent: 3728098 (1973-04-01), Giffen
patent: 4253579 (1980-11-01), Kurz et al.
patent: 4383815 (1983-05-01), Kiefer et al.
patent: 4443401 (1984-04-01), Turner
patent: 4552717 (1985-11-01), Murley et al.
Cheairs M. Norwood
Cosden Technology, Inc.
Housel James C.
Van Winkle Roy L.
Woo Jay H.
LandOfFree
Apparatus for forming deep containers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for forming deep containers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming deep containers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-700746