Lubricating rotary tablet press

Details Lubricating rotary tablet press Lubricating rotary tablet press

1989-05-22

1991-05-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With means applying coating material to work or work contact...

Separate means applying material directly to shaping means,...

118629, 425107, 4251748E, 425DIG115, B29C 4300

Patent

active

050171224

ABSTRACT:
An apparatus for carrying out a process for the manufacture of a moulded product by compression of a powder or granules in a die, wherein 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 is provided. The apparatus includes a first feed for feeding a powdered lubricant to the die, a second feed for feeding 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.

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