MOULDING MATERIAL
Our standard PU System is S1140/11, a heavily flame retarded
Rigid Polyurethane Foam System suitable for medium to high
density mouldings.
This material is recognised as complying
with the UL94 requirements and is rated
V/0 and has a reference E173211.
This material is CFC-free
and has an ozone depletion potential (OPD)
of zero.
PAINT
Mouldings are generally supplied painted in Trimite Plastilac
2 pack PU enamels - in any colour - and usually with a spatter
type finish. Other finishes and paints can be applied as
required.
RFI
EMC coating can easily be applied on to well-prepared internal
surfaces. Usually a nickel/acrylic coating will provide sufficient
protection - down to a resistivity of around 5 ohms square.
Other materials such as a silver/gold coating can be applied
which will provide a much higher level of EMC protection.
INSERTS
Moulding-in threaded brass inserts is always preferable
- an M4 insert will provide 140lbs pull-strength when moulded
in with 3mm material around the insert. This equates to a
typical 12mm diameter boss for an M3 or M4 insert. Tappex
Yardley Type C inserts are our preferred choice but shorter
or through inserts can also be used.
RoHS and WEEE DIRECTIVE
Both our PU material and Paint suppliers can provide guidance
notes confirming that their materials comply with these regulations
and certify that the material we use is free from the following
chemicals:
-
Lead, Mercury, Cadmium, Hexavalent Chromium,
-
Polybrominated Biphenyls (PBBDs), Polybrominated
Diphenyl Ethers (PBDEs).
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