Reaction Injection Molding Rapid Prototypes Big Size More Reliable
Impact Resistant Testing Competitive Price
Reaction Injection Molding (RIM) is an innovative manufacturing process used to produce the large
and complex plastic parts with high flexibility, strength and
durability. RIM involves the mixing of liquid bi-component
polyurethanes in a mixer at certain amount ratio, then injecting
the liquid mixture at room temperature and low pressure into mold
cavity where the mixture reacts and cures into a solid part.
This was an Engine Casing that was originally manufactured by the
sheet metal fabrication with lots of welding. To save cost,
customer modified the design of this casing to be Reaction
Injection Molded. The different wall thicknesses of 5/7/10/20 mm
brought challenge to shrinkage control.
Reaction Injection Molding Process Steps:
Mixing: two liquid polyurethanes are mixed together in a mixer at certain
amount ratio.
Injection: the mixed liquid polyurethanes are injected into mold cavity
under low pressure and room temperature.
Reaction: The liquid mixture reacts and cures inside the mold cavity and
forms a solid part.
Demolding: The solid part is manually taken out from the mold cavity.
The high pressures used cause the plastic to conform to the mold’s
shape, thereby generating the part. Like metal die casting, custom
plastic injection molding typically produces components that
require little or no additional work. Reaction Injection Molding
(RIM) is a specialized subset of the injection molding technique
that chemically bonds two or more plastics into a polymer before
they are introduced into the mold.
The core advantage of our RIM process is the extremely competitive
tooling cost, the disadvantage is the part price since costly
material and surface finishing. Which means more big size of the
part, more competitive the RIM tooling cost, this is why our RIM is
very suitable for low volume manufacturing the large plastic parts,
such as automobile bumpers, large housings, big covers, etc. Insert
molding and overmolding are available for our RIM.
Industry Applications:
RIM is commonly used in the low volume manufacturing or prototyping
of automotive, aerospace, medical devices, and consumer goods
parts. Such as automotive bumpers & grills, body panels, interior
components, aerospace ducting, large enclosures, big housings and
medical covering shells.
We are respected in RIM industry in China, the RIM service we send
out to global market are quick, economical and quality that are
proven by the customers used our service, especially from
automobile field. We look forward to doing more and better by our
continuously improving RIM expertise and experience.
We are a professional supplier. We know what we are doing. We keep a very stable quality level for
years. Thanks to our professional production and technical team, our qualified products rate is 99.75% and we are constantly improving it, we hope our clients can get what they paid for.
Due to the low injection molding temperatures and pressures, RIM is
well-suited for molding large parts with variable wall thickness
and smooth surface finishes. We can also benefit from its
relatively high turnover rate, which makes it proficient in
handling low to middle volume production projects. In addition, RIM
parts have high tensile strength, heat resistance, and good
resistance to corrosive acids or solvents. However, prolonged
exposure to sunlight can degrade polymer-based parts.
Quality and Service are the true reasons that HONKIA survives and grows up in the market since our establishment. We saw some of our competitors are making money by playing around the quality
and then lose the market faster than we think. We do know that is not a sustainable business pattern.
The high strength of our RIM parts had our RIM process low volume
manufactured the large shell parts properly, economically and
quickly. The finished RIM parts for delivery. The parts were packaged
economically and safely to be delivered by cheap sea freight that
took around 25 days.
How does HONKIA compare to other suppliers on price?
Compared to other Chinese suppliers, we choose not to compete on price but to offer
the high level of quality, rapid response, and professional results. That’s why some customers cooperate with us for many years, compared with the price, they need a reliable partner to avoid
serious losses caused by annoying after-sales service or even the trouble of finding no one.
What if I am not completely satisfied with the parts I receive?
HONKIA will free remake or amend the returned parts that you are not
completely satisfied, or refund the full arrived payment, though
this is rarely happened in the past. Any disputes based on a subjective or unilateral determination shall be discussed and negotiated to reach a reasonable result. Our continuing business relies on earning your confidence in our
ability to meet and exceed the reasonable expectations.
