Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1988-04-22
1990-08-07
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 405, 26427217, 2643284, 2643289, 26432812, 425116, 425812, B29C 4502, B29C 4514
Patent
active
049466330
ABSTRACT:
Apparatus for producing semiconductor devices is provided with mold and lead frame suitable for improving the production efficiency and product quality. Also disclosed is a method of producing semiconductor devices by means of the apparatus. The mold is characterized by the shape of a die and has a plurality of pots for pressure-feeding resin, a flow passage communicating the pots with each other so as to uniformalize the molding pressure applied to the pots even if there are variations in the weights of the resin charged in the pots, and a plurality of cavities disposed in series.
Kaneda Aizo
Nishi Kunihiko
Saeki Junichi
Tsunoda Shigeharu
Yoshida Isamu
Hitachi , Ltd.
Lowe James
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