Plastic Car Parts Reaction Injection Molding RIM Low Volume Prototypes to Production

Reaction Injection Molding RIM Factory Low Volume Manufacturing Big Plastic Prototypes And Parts

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.

Reaction Injection Molding (RIM, also named Low-Pressure Injection Molding) is an ideal process to low volume manufacturing the large plastic parts quickly and economically. Firstly, the liquid bi-component polyurethanes are injected into a mixer at certain amount ratio and meanwhile mixed well by the mixer, then the mixture is injected into the tooling cavity quickly at room temperature and low pressure to form the parts.

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.

RIM Parts Design Considerations:
When designing parts for RIM production, it's important to consider factors such as size, structure, wall thickness, draft angles, and gating. RIM parts can be designed with complex geometries and intricate details, but it's important to ensure that the part design is manufacturable and the tooling favors the design.

The maximum weight by one shot of injection molding was 35 kilograms, so our RIM process was available for molding the vast majority of parts. Being different to injection molding by steel mold, our RIM had simple demolding system, and worked fine for insert molding and overmolding.

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.

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.

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.

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.

We specialize in Rapid Prototyping and Low Volume Production to bring cost & time saving for product development and production in China. Our rapid manufacturing techniques include: CNC Machining, SLA/SLS 3D Printing, Plastic Injection Molding, Vacuum Casting, Sheet Metal Fabrication, Reaction Injection Molding.

At Honkia, we not only make prototypes and parts, also help customers in right direction to save money and time. Our sales engineers have qualified engineering knowledge, adequate practical experience and excellent English capability to work with worldwide customers smoothly. We look forward to doing more and better.