Polyurethane Injection Molding

PU injection molding offers exceptional durability and flexibility, making it ideal for a wide range of applications.

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Erye Offer Polyurethane Injection Molding Service Specific to Your Needs!

Urethane injection molding is a process we use to make tough, flexible, and long-lasting polyurethane parts. It works well for both simple shapes and more complicated designs. The basic idea is to heat up the polyurethane, inject it into a mold under pressure, and let it cool down into the final shape. PU has solid mechanical properties—it’s flexible, handles impact well, and resists wear—so it’s a good fit for a lot of different jobs.

Here’s what we can help with on the urethane injection molding side:

We’ll help fine-tune the design to work better for molding
Build precise molds and tooling in-house
Handle anything from small batches to high-volume runs
Do post-processing like assembly, surface finishing, and packing
Adjust the material mix to meet specific performance needs

Advantages of PU Injection Molding

Wide Range of Hardness

Polyurethane can be made really soft or really hard, depending on what you need. It covers everything from soft rubbery parts (around Shore A 20) to tough, rigid pieces (up to Shore D 90). That makes it useful for a lot of different parts.

Handles Heavy Loads Well

PU holds its shape under pressure, so it works great for things like wheels, mounts, and other parts that take a beating. It can handle over 6,000 psi in compression, which is more than most rubbery materials.

Bonds Easily to Other Materials

One big plus is how well PU sticks to metals and plastics. That’s helpful for overmolded parts where you need a strong connection—like in automotive or industrial parts.

Tough and Durable

PU doesn’t crack or break easily. It’s got a good mix of flexibility and strength, which makes it ideal for parts that get banged around, like bumpers, wheels, or covers.

Stretches Without Tearing

Unlike brittle plastics, PU can stretch quite a bit before it tears. Some grades hold up really well even under repeated stress—perfect for gaskets or flexible parts.

Good for Outdoor Use

With the right additives, PU can handle sun and weather pretty well. It lasts much longer outdoors than standard plastics—usually 2 to 3 times longer.

Start Urethane Injection Molding Project

Get high-quality polyurethane injection molded parts! Contact with Erye to request a quote!