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When imagining military or aerospace applications, you probably don't immediately think of plastic injection molding. The military has been expanding the use of plastics, replacing metals with engineered plastics that can handle any situation around the world. The aerospace industry has also been converting metal to plastic, but it has also been using plastic injection molding for the benefits of lighter weight, lower cost, and repeatability over thousands of parts. Injection molding continues to find more and more applications, with low-volume custom molding creating new and radical components.
Injection molding prototyping has been used for decades to create lightweight components and assemblies for the military. You'll also find thousands of uses in aerospace, whether it's on a commuter airliner or a rocket to the International Space Station. Injection-molded plastics have many advantages that can compete with other materials.
Uniformity and close tolerances: Both the military and aerospace industries require uniformity and close tolerances to ensure components fit every time. For many applications, plastics are perfect for repeating precision parts. Injection molding can provide the same or better accuracy than comparable metal products to meet military specifications and aerospace standards.
Low cost: There are thousands of options for injection molded plastics depending on the application. Low-cost injection molds can be created for a few unique parts, or high-volume injection molds can be created to produce thousands or millions of parts at a lower cost. Plastics can also provide less labor-intensive manufacturing, lower raw material costs, and their light weight can reduce shipping costs.
Strength vs. Weight: Plastic injection molding can be designed with thin walls and still be stronger than metal competitors. In some cases, they can be stronger than any comparable material, yet still be lighter. This advantage can reduce the overall weight of a complete assembly, or just a simple product. The benefits of reduced weight include reduced fatigue for soldiers carrying the product, improved durability on duty, and reduced fuel consumption in logistics.
Application Adaptability: Plastics are highly adaptable and flexible for any military or aerospace application. Plastics can be formulated for high or low temperature, corrosive or power-intensive environments, strength and durability, and can be colored to meet specific detailed environments. There are thousands of engineering resins available today, and it is possible to choose a specific resin based on your product needs.
