The Moulding Process
Tooling for Custom Moulding
RMAX aluminium moulds are durable and cost effective and where practical, we provide multiple cavities to allow cost effective part product for your projects.
Depending upon the size of the part and the suitability of the material, EPS moulding can provide significant cost and time savings compared to moulds required for other plastic technologies such as injection moulding.
RMAX aluminium moulds contain core vents to efficiently transfer steam and pressure into the mould and custom designed cooling sprays to allow rapid cooling and faster cycling of the product, reducing the cost to you. Aluminium grades chosen for mould construction represent the optimum between strength, durability and cost.
EPP Part Design Considerations
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| Mean Finished Part Density (grams per litre) | ||||||
|
| 21 | 30 | 40 | 50 | 60 | 80 | 100 |
| Finished Part Density Range
(Incorp. Tolerance - grams per litre) | 19 - 23 | 27 - 33 | 36 - 44 | 45 - 55 | 54 - 66 | 72 - 88 | 90 - 110 |
| Dimensional Tolerance
0 - 75mm | +/-
| +/-
| +/-
| +/-
| +/-
| +/-
| +/-
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| Dimensional Tolerance
76 - 150mm | +/-
| +/-
| +/-
| +/-
| +/-
| +/-
| +/-
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| Dimensional Tolerance
150mm plus | +/-
| +/-
| +/-
| +/-
| +/-
| +/-
| +/-
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| Min. Part Wall Thickness
(same side of tool parallel to tool draw) | 25mm | 25mm | 25mm | 25mm | 20mm | 20mm | 20mm |
| Min. Mouldable Draft Angle | 0.5 deg | 0.5 deg
| 0.5 deg
| 0.5 deg
| 0.5 deg
| 0.5 deg
| 0.5 deg
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| Min. Tool Overfill Required | 15mm | 15mm | 15mm | 20mm | 20mm | 20mm | 20mm |
| Typical Nominated
Bead Diameter | 4-6mm | 4-6mm | 3-5mm | 3-5mm | 2.5-4mm | 2.5-4mm | 2.5-4mm |
| Max. Depth of Finished Part
(parallel to tool draw) | 350mm | 350mm | 350mm | 350mm | 350mm | 350mm | 350mm |
| Max. Footprint of Finished
Part (Length x Width) | 185 x
| 185 x
| 185 x
| 185 x
| 185 x
| 185 x
| 185 x
|