Injection mold with polished cavity and core
A two-plate production mold with mirror-polished cavity and core plates, built for visible Class-A surfaces.
Products · Injection mold
Two-cavity container mold
A compact two-cavity tool for cups and containers, with balanced cooling and a polished cavity finish for a clean visible surface.
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Container tooling looks simple until cycle time and roundness matter. In a two-cavity cup mold the two cavities must fill and cool at the same rate or the parts differ shot to shot, so gating is balanced and the cooling circuits are laid out symmetrically around each cavity.
We machine the cavity and core inserts, the plates and the ejector system in our own plant on 36 machines, hold mold work to ±0.01 mm, and verify the assembly on a Swiss Hexagon CMM before the first trial. If your cup needs a specific stacking rib, lid fit or wall reduction, that is settled in the DFM review before steel is cut.
Typical applications
- Drink cups and tumblers
- Food and storage containers
- Cosmetic jars and lids
- Paint and chemical pots
Specification
What this class of tool is built to
Our standard specification for this type of tooling, confirmed line by line on the mold design approval sheet before machining starts.
| Mold construction | Two-plate, three-plate, hot runner, stack or family — specified per part |
| Cavity count | Single or multi-cavity, sized to annual volume, cycle time and press tonnage |
| Mold steels | P20, 718H, NAK80, S136, hardened H13 / SKD61 cores |
| Mold work tolerance | ±0.01 mm |
| Machine accuracy | Down to 0.001 mm (Yasoda, OKUMA, GF, Makino) |
| Runner | Cold runner, hot runner or valve gate |
| Surface finish | SPI A1–D3, bead blast, leather grain or your texture |
| Cooling | Machined circuits; baffles or bubblers where geometry requires |
| Ejection | Pins, sleeves, stripper plate, lifters, unscrewing or collapsible core |
| Verification | Swiss Hexagon CMM and Zeiss Contura; dimensional report at T1 |
| Molding | 30 presses from 20T to 300T, in the same building |
| Documentation | 2D/3D drawings, steel and component certificates, parameter sheet, spare parts |
| Lead time | Typically 15–30 days of machining after design approval |
| Tool ownership | Yours — the tool is designed to be transferable |
Values above are our standard capability for this class of tool, not fixed figures for a specific project. Cavity count, steel grade, runner type and finish are agreed with you on the design approval sheet before any steel is cut.
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Multi-cavity mold with inserted cores
High-cavitation tooling with replaceable cores in a common mold base — output per cycle without rebuilding the whole tool.
Next step
Ask for a DFM review and a price for your part
STEP/IGES/X_T files, the resin, your annual volume and target market are enough to get a mold price, a cycle estimate and the risks we can see — usually in 1–2 business days.