Plastic injection molding may be the most utilized industrial process in the world. And no matter what the end product – whether a drug vial or a car door handle – the plastic injection molding process is more or less the same. Plastic, in the form of granules or pellets, is fed into a hopper, heated, China CC Composite Heat Shield Manufacturers than “injected” or rammed into a mold containing a cavity which is the exact shape of the part to be made.
to other plastic injection molding companies the world over, Illinois
plastic injection molding companies discovered many years ago that if
you assemble several molds in a line on the same press, you can
turbo-charge your efficiency by adding more cavities.
CC Composite Electrode Bolt Manufacturers
This series of connected face molds is known collectively as a “stack
mold.” Each mold in the stack has the same shape and mass as the one
next to it, so they all fit within the same tie bar assembly.
it depends on many factors, productivity usually goes up in proportion
to the number of molds in the stack. For instance, a manufacturer can
double output per run by doubling the number of cavities on the same
There are many different types of stack molds but some commonalities include:
* Very high production runs on fewer machines
* Multiple cores and cavites
* Indexable cores, to injection-mold multiple materials
* Have the ability to perform multiple operations in the same molding cycle
speaking, a stack mold has a stationary “A” half, and at least two “B”,
or moveable halves. They are similar to rotary molds that have been in
use for many years, but in many cases are vertical rather than
horizontal. This means that the moveable cores rotate about a vertical
axis, rather than a horizontal. Also, the stack mold is very compact and
has a much smaller footprint than other types of molds.
molds can be expensive. So a high volume is necessary to compensate for
their price. But no worries; the return-on-investment is also high. Car
and healthcare products are also typically made with stack mold
Just think about the amazing amount of engineering and mold-making required,
CC Composite Electrode Sheath Manufacturers
the money is understandable. Designing and making a stack mold is not
for every company, or molders who just want to make quick buck.
CC Composite Cover Plate Manufacturers
Plastic injection molding is not a breeze at any time but stack molding is a whole new dimension of competence in our industry.