Adept Custom Molders (ACM) provides plastic injection molding using
cold runner molds, an economical process to produce plastic parts of simple design,
or when more than one color part is needed to be manufactured quickly.
Cold Runner Molding: Efficient and Economical
Significant advantages to using a cold runner system include:
Simple mold design
Considerably less expensive than hot runner system
Less skill required to set up and operate
Mold requires less maintenance
Color changes are easy - all plastic in the mold is ejected with each cycle
With a cold runner mold, the runner (excess material retained in the feed
channels) is cooled and ejected with the part. Every cycle, a part and a
runner are produced.
Cold Runner Molding: A Few Disadvantages to Consider
While it is a less expensive process than hot runner
systems, there are a few disadvantages to cold runner systems to consider, including:
Waste plastic generated
Runner material must be either disposed of or reground and reprocessed
Additional steps in the manufacturing process
Regrind will increase variations in the injection molding process
Regrinding could decrease the plastic's strength and mechanical properties
Cold Runner Molding: Get the Right Mold for Your Project
Cold runner molds are the least expensive to build for parts of
simple design. Depending on part complexity, one of two types of cold runner molds
may be used:
A two plate cold runner
mold is the easiest and least expensive type of mold to
produce.
Two plate molds have a single parting plane, and the
mold splits
into two halves at the plane
Because the runner system must be in line with the parting plane, the part can only be gated on its
perimeter
A three plate cold runner mold differs from a two plate
in that it has two parting planes, and the mold
splits into three sections each time a part is
ejected
This feature provides greater flexibility of design, which allows
gating to be placed in the most efficient locations
Since the mold has two parting planes, the runner system can be located on one, and the part on the other,
which allows for
easier plate separation
For a quote or more information about how we can help your project, call 765-457-8225, or send us an email, or submit this short form:
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