Injection Molding VS Compression Molding
What Is Injection Molding?
Injection molding is ideal for creating complex, intricate parts and large production runs. To fabricate a component using injection molding, a manufacturer will first create a steel mold based on the user’s product design. After the mold is created, the manufacturer injects a melted plastic formula into the mold, where it will cool and set in the shape of the mold’s cavities.
This production method offers several advantages, including an exceptional level of consistency, versatility and a high level of accuracy. The process can be easily replicated for large production runs, and molds can be customized to nearly any shape.
What Is Compression Molding?
Rather than use melted plastic to fill the cavities of the mold, the compression molding method involves pouring or placing thermoset materials into a heated mold cavity. The mold is then compressed under heavy pressure, forcing the material to spread throughout the mold. To ensure proper curing, compression molds must be kept at a stable pressure and temperature.
Compression molding can be slightly less consistent than injection molding and is better suited for less complex components. While both types of molding can yield high-volume output, compression molding is more affordable for building simple components that are strong and durable. Another advantage of compression molding is the ability to produce extra-large parts at lower cost.
Comparison Table Between Injection Molding and Compression Molding
| Injection molding | Compression molding | |
|---|---|---|
| Material | Thermoplastics,thermoplastic elastomers | Thermosets,silicone, unvulcanized rubber |
| Tooling fee | High | Low |
| Production time | Rapid | Slow |
| Precision and Repeatability | Excellent | Good |
Find Expert Help with Injection Molding Solutions Today
The type of molding that’s best suited for your project will depend on many factors. When those factors point to injection molding as the most effective option, partnering with an experienced service provider makes a significant difference in the outcome that you experience, influencing factors from quality to speed. Get a free quote on your project today from Protosoon and explore the cutting-edge options available to you now.