Two-plate Round Cover Injection Mold

Two-plate round cover injection mold is a standard, cost-effective injection molding tool for producing circular plastic caps, lids, and covers. The 3D rendering shows the mold opened to reveal the core and cavity plates, with the finished sprue and parts beside it.

Mold Structure

A two-plate mold consists of an A plate (cavity side) and a B plate (core side). When the mold opens, the part stays on the B plate and is ejected by ejector pins. The sprue bushing feeds molten plastic through a runner system to the gates. This is the simplest and most common injection mold design.

Features

• Simple two-plate design for easy maintenance.

• Direct sprue or edge gate for round covers.

• Ejector plate with return pins.

• Guide pillars and bushings for alignment.

• Cooling channels for cycle time optimization.

Typical Parts

Two-plate round molds produce bottle caps, jar lids, container covers, electrical box covers, and circular plastic housings. The process is suitable for PP, PE, ABS, PC, and most thermoplastic materials.

Advantages

The two-plate design is economical to build, easy to operate, and simple to maintain. It is the best choice for parts that do not require side actions or complex gating. Cycle times are short, and the mold can run on standard injection molding machines.

Conclusion

The two-plate round cover injection mold is a reliable, cost-effective tool for circular plastic caps and lids. Its simplicity makes it the standard choice for medium-volume production.