LMG introduced the 150-mm plasticator, used to prepare long-glass-fiber-filled thermoplastic materials for compression molding.
The plasticator has a reciprocating screw designed to be gentle on the fibers, since longer fibers result in improved physical properties in the molded part. The barrel temperature is accurately controlled and can be adapted to specific material requirements.
The plasticator has replaced the hydraulic screw drive with an electric drive, to cut down on energy use and reduce the noise level. The electric drive runs at a right angle to reduce the overall length of the unit.
During the plasticating process, the reciprocating screw conveys the material to the front of the barrel. Then the barrel exit is closed by a hardened hydraulic knife, which can be heated. When the pressure in front of the screw overcomes the back pressure on the screw, it will begin to reciprocate. It stops once it reaches the programmable material volume set point. The knife at the front of the barrel will open and the screw is hydraulically driven forward. The unit can deliver 14 pounds of material.
The plasticator can be supplied with a control swing arm and casters for ease of mobility. Conveyors also are available to transport the material to the compress molding press.
LMG is based in De Pere, Wis.