Advantages of Reaction Injection Molding-Nelson Miller

Advantages of Reaction Injection Molding (RIM)

The RIM molding process combines liquid polyurethane resins, low molding pressures, low mold temperatures and has a high performance-price ratio, low mold development costs, short r & D cycle, can quickly open up the market.In terms of design, with flexible configuration features, can produce different parts of the wall thickness products, and the hardness, density, rigidity of the parts can be designed on demand.It can mimic the physical part characteristics of traditional injection molding, make very large parts like in fiberglass lay-up (FRP), control wall thickness and improve reliability and repeatability of typical labor intensive thermo or pressure formed parts. In fact, it can be summarized as follows:

① Suitable for diverse and small-scale production, to meet the diverse customization needs of customers;

② The product has strong impact resistance and the material has strong weather resistance;

③ Capable of achieving diversified process shape design and free part design, such as uneven wall thickness, embedded hardware, and special shapes;

④ Low mold cost and short mold opening cycle can save costs and improve production efficiency;

⑤ Spraying can present a better external effect.

RIM Industry Application Area

The advantages of RIM technology are widely used in many industries,including but not limited to:

Medical device
Automotive
Heavy equipment/commercial vehicle
Laboratory/scientific/analytical device
Electronics
Petrol delivery
Financial/cash handling/POS
Various other industries

Part Design Advantages of RIM

Deep Draw Capability

RIM's deep drawing capability allows for the production of parts with complex shapes and deep features, providing design flexibility and the ability to create complex parts that meet specific requirements.
Complex Geometry Molding

Rim is able to shape parts with complex geometric shapes to achieve complex designs and detailed functions that may be difficult or impossible for other molding processes.RIM allows for direct integration of various design functions into molded components, including inserts, slots, ventilation holes, holes, bosses, wiring guides, hinges, snap fit, multiple wall thicknesses within the same component, and packaging.
Molded In Design Features (Sides A & B)

RIM allows for direct integration of various design functions into molded components, including inserts, slots, ventilation holes, holes, bosses, wiring guides, hinges, snap fit, multiple wall thicknesses within the same component, and packaging.

Excellent Strength to Weight Ratio

RIM parts exhibit excellent strength to weight ratio, providing structural integrity and durability while maintaining a relatively low overall weight of the parts.Surface Quality and Impact Resistance
RIM provides high surface quality and impact resistance, which contributes to the overall durability and lifespan of the product.
Forming of Large Parts

RIM excels in the molding of large parts and provides cost-effective solutions for producing potentially challenging or costly components using traditional molding methods.
Parts Integration

RIM promotes part integration by combining multiple components into a single molded part, reducing assembly steps, simplifying production processes, and minimizing overall manufacturing costs.
Sheet Metal Conversions

RIM provides an alternative to traditional sheet metal manufacturing, reducing tool costs, providing greater design flexibility, and improving production efficiency.

PU RIM PROCESS

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