Presses – With additional treatment of material – Separating materials
Patent
1992-05-06
1994-03-29
Gerrity, Stephen F.
Presses
With additional treatment of material
Separating materials
100 93P, 156382, 1565831, 219243, 425407, 425509, B30B 900, B30B 1534
Patent
active
052974804
ABSTRACT:
A high vacuum hot press for producing a multi-layer board. The high vacuum hot press includes a pair of heat insulating members each comprising a heat insulating material and a thin metallic cover defining an evacuated hermetic space accommodating therein the heat insulating material. The heat insulating members are arranged on respective surfaces, facing each other on a pair of bolsters. A pair of hot plates are placed on the heat insulating members, respectively. A multi-layer workpiece is disposed between the hot plates in a sealed space in a sealing unit. The multi-layer work includes wafers and an adhesive base material. The sealed space is evacuated to a high vacuum by an evacuating unit, and the multi-layer workpiece is heated by a heating unit under a high vacuum. The high vacuum hot press is further provided with a bonding unit which shifts the bolsters relative to each other to open and close the sealing unit and to bond the wafers of the multi-layer workpiece to each others for producing the multi-layer board.
REFERENCES:
patent: 3551952 (1971-01-01), Morse
patent: 3555597 (1971-01-01), Meadows
patent: 3619310 (1971-11-01), Clarke
patent: 3971875 (1976-07-01), Regalbuto
patent: 4963221 (1990-10-01), Isobe et al.
English Language Abstract 62-156931 (A) Jul. 1987.
Fujii Mutsumasa
Koromegawa Isao
Miyashita Akimi
Sato Hazime
Shibata Katsunori
Gerrity Stephen F.
Hitachi Techno Engineering Co. Ltd.
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