With injection molding, rubber is pre-heated before being injected into the mold. Since it is pre-heated, the rubber flows more readily into the mold, allowing for higher cure temperatures, shortening the curing cycle. Rubber injection molding presses provide tight clamping, which results in little or no flash. Parts manufactured using injection molding may not require additional finishing. The process is used for high production runs and parts that require tighter tolerances. Our injection press capabilities range from 10” x 10” up to 26” x 26”, with tonnage (clamping force) of 100 to 800 tons. The clamping force of an injection press is what keeps the mold tightly closed during the injection and molding cycle.
Advantages of Rubber Injection Molding
- Fast production.
- Low labor costs.
- Can be used to produce very small parts.
- Leaves little post-production scrap.
- Good product consistency.
- Reduced requirements for finishing.
- Good dimensional control.
Disadvantages of Rubber Injection Molding
- Small runs of parts can be costly.
- Requires large production runs to really be efficient.
- Not all compounds, or durometers, are suitable for this process.
- High initial tooling and machinery cost.
- Part design restrictions.
Request a quote from Minor Rubber today to get started.