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Plasticating
Unit
The C.A. Lawton Co. designs and builds innovative molding machinery
for the preparation of reinforces plastic materials. The plasticating
unit is designed to prepare a wide range of different plastic materials.
Material adapted
screws allow the following materials to be reliably plasticated
and dosed for further downstream processing:
- Long fiber
reinforced plastics
- Shredded
old material
- Mixed recycled
plastics
- Additives,
glass and neat resins
These plasticating
units and their peripheral material supply, dosing, and handling
systems, offer the user a wide choice of possibilities for production
process optimization and the introduction of new technical application
methods.
The plasticating
unit's versatility is increased by its design as a mobile unit
Plasticating
and volume dosing are discontinuous. The temperature required for
the process is induced externally via high-rated ceramic heating
bands, and in some cases, internally through a heated screw. A wide
range of the screw rotational speed, temperatures, dynamic pressure,
injection speed, etc. can be adapted to the material specific requirement.
These parameters are part of the PLC control system.
During the plasticating
process, the reciprocating screws convey the melt to the front of
the barrel. As soon as the desired dosing volume is reached, the:
- Plasticating
process is interrupted
- Cut-off knife
opens
- The screw
pushes the dosed melt out.
- Cut-off knife
closes
When discharged
in this manner, the contour of the metal can be determined by means
of permanently installed orifice plates or by automatically adjustable
flat sheet. At the end of each cycle, the extruded product is cut
off from the material remaining in the cylinder by means of a hydraulically
operated cut-off knife.
A temperature
resistant, speed controlled discharge conveyor with high speed /
creep speed controls is used to transport the extruded product into
position for further handling. Form and material consistency of
the plastics volume, together with the optimization of technical
application parameters, are important for a reliable process. The
plastic volume can be influenced by the automatically adjustable
flat sheet or slot die, which offers the possibility to vary width
and thickness of the plasticated material during deposition. When
the dimensions of the plasticated product can remain unchanged,
permanent orifice plates can be installed. All technical application
parameters can be changed at the operator interface.
The C.A. Lawton
Co. Plastic Machinery Division was established in 1935 to meet the
molding industry's demands for dependable, efficient presses. Since
then, Lawton has become a leader in design and building of molding
machinery for companies worldwide. Today, we are applying this experience
to provide innovative long fiber technology to companies throughout
the world. We are at your service as the specialist for designing
and building plasticating machines for careful processing of long
fiber reinforced plastics using plasticated pressing and plasticating
deposition pressing processes. Lawton can design and build fully
automated systems. These systems are capable of automatically loading
the material to the plasticator, loading the material from the plasticator
into the mold, automatically unloading the molded part, and performing
any post molding operations. We also have very experienced technicians
available to offer processing assistance. Whatever your molding
needs, Lawton can provide your company with innovative, cost-effective
solutions to meet your objectives.
Contact
us via Online Request
OR Phone: 920-337-2470, FAX:
920-347-9214, Email:
sales@calawton.com
We will respond within one business day.
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