Application Book: Heating Solutions for All Industries | Page 40
PROCESS CONTROL
PLASTIC INJECTION MOLDING
High temperature heating for melting plastic pellets
Application
Common plastic products created through injection molding include toys, packaging,
consumer items, furniture, containers, machine parts, tools, and much more. To
create these plastic products, manufacturers begin the process with plastic granules
or pellets. The pellets are fed through a hopper and into a barrel or chamber where
they are melted and directed by a screw-conveyer to the individual molds. The melting
process must be fast and powerful to ensure production efficiency. Temperatures
required to melt plastic can be at or above 500°F (260°C), and the heaters used
must be able to survive contact with molten plastic if leaks occur. If the temperatures
are not maintained across the entire surface, the process loses efficiency which
could lead to costly downtime.
Solution
BriskHeat’s mica band heaters wrap firmly around the barrel to provide the necessary
heat to efficiently melt the pellets. They are designed to the exact dimensions of the
barrel to ensure maximum heat transfer and extended heater life. They can generate up
to 40 W/in² (6 W/cm²) and reach temperatures up to 850°F (454°C). They are moisture
and corrosion resistant, have a low-profile 0.125 in (3 mm) designs, and are constructed
with evenly-wound nickel/chromium resistance wire for uniform heat distribution.
Additionally, they can be manufactured to UL standard UL499 and CE compliance.
For industrial applications where monitoring temperature is a critical need, the TTD
controller is an easy-to-use controller that offers a digital display for easy programming
and visual temperature identification. Larger heaters with amp ratings greater than 12
Amps, should use a TC4000 Series controller with ratings up to 50 amps.
Other Applications
This application is very similar to plastic extrusion, where long, pre-shaped plastic
products are created. Additionally, BriskHeat Band Heaters are used in applications
found in die casting, blow molding, tank & drum heating, pulp & paper processing
equipment, food & candy extruders, vending machines, and analytical instrumentation.
TTD
Types of Users
Production Engineers and Managers
Design Engineers
Facilities Maintenance
Process Engineers
Plant Managers
Band and
Nozzle Heaters
Industry
Plastic/Injection Molding
36
General Manufactuirng
Toll Toll
Free:
Free:
800-848-7673
800-848-7673
| Phone:
| Phone:
614-294-3376
614-294-3376
| BriskHeat.com
| BriskHeat.com
| Email:
| Email:
[email protected]
[email protected] | Fax:
| Fax:
614-294-3807
614-294-3807
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© BriskHeat
BriskHeat Corporation.
Corporation. All
All Rights
Rights Reserved.
Reserved. 20-01
19-03