The gate location on an injection mould for thin-wall cups is usually at the bottom. A submarine gate on an injection mould for thin-wall cups cuts itself during ejection. This leaves a small witness mark that does not affect cup stacking.

For an injection mould for thin-wall cups with a wide mouth, multiple gates may be needed. Sequential valve gating on an injection mould for thin-wall cups prevents flow lines. The gate vestige on an injection mould for thin-wall cups should be below 0.2mm.

A hot tip gate on an injection mould for thin-wall cups produces a clean break. The gate diameter of an injection mould for thin-wall cups is around 0.8mm for PP. Too large a gate on an injection mould for thin-wall cups leaves a sharp protrusion.

The gate location affects the molecular orientation of the cup wall. A well‑positioned gate on an injection mould for thin-wall cups increases strength. For clarity, the injection mould for thin-wall cups gates must not cause haze.

When designing an injection mould for thin-wall cups, flow simulation predicts the gate balance. A 32‑cavity injection mould for thin-wall cups requires 32 balanced runners. The natural runner balance of an injection mould for thin-wall cups is achieved by equal lengths.

Hot runner nozzles for an injection mould for thin-wall cups have replaceable tips. The tip design of an injection mould for thin-wall cups must withstand high shear. By optimizing the gate, an injection mould for thin-wall cups produces cups with a smooth drinking rim. The gate is truly the “inlet” that determines the quality of the injection mould for thin-wall cups.