By Melissa Fassbender, Associate Editor, PD&D
Vertically integrated, Premold delivers Class A results
across the board.
Reaction Injection Molding (RIM) was invented in Germany in the 1970s, and made its way to America about
10 years later. Originally used for producing
automotive components, RIM is a low-pressure, low-temperature process that uses
urethane thermoset resins. The process
has been refined over the years, but has
remained primarily unchanged.
Founded in 1980, Premold focuses on
producing covers and enclosures for the
life sciences industry, particularly in medical equipment. With a 68,000 square foot
facility, the company is one of nine RIM
facilities in America, and is a primary testing facility, and large resin processor for
Bayer Material Sciences.
Although there are varying forms of injection molding, the results from RIM lend
themselves particularity well to the medical
device industry, delivering high cosmetics,
precise fit-ups, and tight tolerances.
“Premold provides comprehensive
design and engineering support services
from concept through production launch,”
explains Doug Culbertson, vice president
of Premold. “This approach to design for
manufacturability results in finished parts
with tight tolerances and first-in-class cosmetics. Customers get precise fit-ups and
Class A finishes with every batch of parts.”
Custom Tool Design
Premold is vertically integrated, offering
in-house tooling and “finishing” work
(painting, silk screening, EMI coating,
sub-assembly, etc.). A Solidworks master is
also on staff to provide design services and
Regional manager Lucas Boettcher
explains, “With the right design, our cus-
tomers are able to nail down their fit-ups
every single time.”
The design phase begins with a review of
the project and application specifications.
Engineers then work with the customers
to fine-tune their part geometries in CAD.
When the part design has been finalized,
custom molds are machined that will pro-
duce the RIM part.
Robotic CNC systems are used to machine