Plastic article or earthenware shaping or treating: apparatus – Gang-press – plural parallel leaves or platens
Patent
1990-10-09
1993-01-26
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Gang-press, plural parallel leaves or platens
100 90, 100 93P, 100194, 156286, 156382, 1565831, 4254051, 425406, 425407, B29C 4300
Patent
active
051821214
ABSTRACT:
A hot press including a displaceable sleeve for surrounding materials of a multi-layer substrate under a reduced pressure condition, a gas pressurizing condition and a heating condition with thermal plates. Upper and lower sealing units seal an interior of the sleeve, with a mechanism lowering and raising the sleeve. A pilot check mechanism prevents a lower bolster from raising/lowering upon the reduced pressure condition and the gas pressure condition, and a retainer maintains the lowered or raised condition of the sleeve. The multi-layer substrate is formed under the reduced pressure condition and the gas pressure condition. Accordingly, the atmosphere and moisture between the materials of the multi-layer substrate and volatile composition are removed. Additionally, a void generated during the heat and pressure process by the heating plates is eliminated from the multi-layer substrate. By carrying out the formation of the multi-layer substrate at the heat and pressure by the heating plates under the gas pressure condition, a final dimensional precision and shape are enhanced and a warpage or twist is suppressed.
REFERENCES:
patent: 3695806 (1972-10-01), Arfert
patent: 4204822 (1980-05-01), Hewitt
patent: 4551085 (1985-11-01), Epel et al.
patent: 4666551 (1987-05-01), Soberay et al.
patent: 4857135 (1989-08-01), Copp
patent: 4908087 (1990-03-01), Murooka et al.
Fujii Mutsumasa
Kawaguchi Masami
Kogawa Kiyonori
Kubosawa Minoru
Kyooi Masayuki
Bushey Scott
Hitachi , Ltd.
Hitachi Techno Engineering Co. Ltd.
Woo Jay H.
LandOfFree
Hot press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1411804