Manufacture of moulded products

Details Manufacture of moulded products Manufacture of moulded products

1986-12-10

1989-05-23

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 24, 264109, 264113, 264123, 427 3, 427 26, 427133, 425 99, 4251748E, B29C 4308, A61K 920

Patent

active

048328804

ABSTRACT:
In a process for the manufacture of a moulded product by compression of a powder or granules in a die, a powdered die lubricant is used, lubricant particles are electrically charged and the charged particles are fed to the die in advance of the moulding powder. An apparatus for carrying out the process is also provided, the apparatus including a first feed for feeding a powdered lubricant to the die, a second feed for feeding moulded powder to the die after the powdered lubricant, and means for maintaining the electrical potential of the die at a predetermined value different from that of the powdered lubricant.

REFERENCES:
patent: 3278656 (1966-10-01), Dicks et al.
patent: 3478387 (1969-11-01), Ruekberg
patent: 3626043 (1971-12-01), Flipot et al.
patent: 3930061 (1975-12-01), Scharfenberger
patent: 3957662 (1976-05-01), Sangekar et al.
patent: 3995979 (1976-12-01), Fedrigo
patent: 4047866 (1977-09-01), Shah
patent: 4323530 (1982-04-01), Voss et al.
patent: 4359192 (1982-11-01), Takahashi et al.

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