Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Dividing work to form plural articles
Patent
1986-09-30
1988-02-16
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Dividing work to form plural articles
83176, 83925CC, 156285, 264101, 264138, 414752, B29C 4102, B29C 6700
Patent
active
047253932
ABSTRACT:
A laminate consisting of a number of air-permeable sheets of a material is placed on the supporting surface of a table, and a major portion of the periphery of the laminate, inclusive of a lower surface thereof, is covered with a sheet impermeable to air. A suction pipe is arranged on the supporting surface along at least one side surface of the laminate and has a suction port faced toward the one side surface. A peripheral portion of the suction port is covered with the air-impermeable sheet, and the laminate is compressed in the direction of its thickness by evacuating air from within a space defined by the air-impermeable sheet by vacuum producing means connected to the suction pipe. The air-impermeable sheet and laminate can be moved together with the suction pipe in parallel relation to the supporting surface, and they can be stopped at a desired position, during the evacuation process.
REFERENCES:
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patent: 3072225 (1963-01-01), Cremer
patent: 3765289 (1973-10-01), Gerber
patent: 4205835 (1980-06-01), Gerber
patent: 4277890 (1981-07-01), Portnoff
patent: 4425406 (1984-01-01), Palma
patent: 4494433 (1985-01-01), Gerber
patent: 4543862 (1985-10-01), Levene
Cashion Jr. Merrell C.
Czaja Donald E.
Kabushiki Kaisha Kawakami Seisakusho
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