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Expert Advice
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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

 


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

+/-
1.5mm

+/-
1.5mm

+/-
1.5mm

+/-
1.5mm

+/-
1.5mm

+/-
1.5mm

+/-
1.5mm

Dimensional Tolerance
76 - 150mm

+/-
3.0mm

+/-
3.0mm

+/-
3.0mm

+/-
3.0mm

+/-
3.0mm

+/-
3.0mm

+/-
3.0mm

Dimensional Tolerance
150mm plus

+/-
2.2%

+/-
2.2%

+/-
2.2%

+/-
2.2%

+/-
2.2%

+/-
2.2%

+/-
2.2%

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

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
87 cm

185 x
87 cm

185 x
87 cm

185 x
87 cm

185 x
87 cm

185 x
87 cm

185 x
87 cm