The Top 5 Benefits of the Polyurethane Injection Molding Process


The polyurethane injection molding process has been around since the 1960s. Reaction injection molding is the most advanced way of creating polyurethane parts. It’s a process that involves mixing two liquid components followed by injecting them into the mold where they chemically react, cure, and form a final product.

RIM comes with a wide variety of benefits, giving you the freedom to create functional products and designs.

Here are a number of advantages when using RIM technology.


Through RIM, you can create products of any size that are structurally sound and long lasting. Polyurthane is resistant to heat, chemicals, corrosion, and also posesses high-impact strenghth. It has also been found to be one of the most flexible materials on Earth. Working with this material allows you to manufacture parts with the freedom and ease.

Reaction injection molding can help create many products

The RIM process produces products such as:

  • flexible foam
  • structural foam molding
  • elastomeric coatings

The overmolding process

RIM allows you ultilize overmolding, allowing you to combine multiple parts into one. You can over-mold substances like wood, glass, and metal.

Design freedom

This process allows certain features in designs to allow a product to stand out such as:

  • variable wall thickness
  • molded instructinal ribbing without any sink marks in the final product
  • molded-in attatchment points
  • molded-in color
  • high resolution embossing
  • creative details and features

Due to polyurthane’s flexible properties, you can create complex models at a cost effective price.

It’s a more affordable alternative

Reaction injection molding can save you money in the long run. It’s a streamlined process, can combine multiple parts into one, and it utilizes afforable materials.

Reaction injection molding has been helping achieve freedom, flexibility, and ease by manufacturing products for personal and commercial use.

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