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.
Products · Injection mold
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.
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This is the classic two-plate construction: cavity plate, core plate, guide pillars, ejector system and a polished shut-off boundary. The polished cores and cavities in the photograph are the surfaces that decide whether the part shows a flow mark or a polishing scratch in the customer's hand.
For cosmetic surfaces we specify NAK80 or S136 steel, machine the contours on 0.001 mm accuracy CNC and Makino EDM machines, polish by hand to the agreed SPI class, and protect the finish through assembly. Texture, gloss level and witness-line positions are confirmed on the mold design drawing before cutting starts.
Typical applications
- Visible housings and covers
- Cosmetic packaging components
- Houseware with Class-A surfaces
- Electronics bezels and lenses
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
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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.