Polyurethane Foam is cut and shaped by hand or,
particularly the higher densities, by CNC router to produce
dimensionally accurate patterns (or bucks) of a composite
part. The filled nature of tooling block means that the
shaped pattern can already have a high quality surface finish
which needs little surface preparation before it can be used
to produce a mould.
Lower density P.U. Foams are suitable for hand
machining and even hand carving with the higher density model
board being suitable only for hand machining or CNC
machining. P.U. Model board is also used by architects and
architectural model makers to create accurate, stable models
of buildings or architectural landscapes.Once a pattern has
been cut and finished to the desired shape the P.U. Foam is
compatible with a wide range of finishes and release agents.
P.U. Foamis available in a comprehensive and standard
range of boards for almost every application area in the
design, modelling and tooling industries. Its formulation is
to keep down weight and density but bring out the special
physical values required for the application.
Available for making design and styling models these
boards are superior in terms of edge stability and surface
structure. Furthermore they can be painted without much
preparation (little to no filler) and are much more pleasant
to machine due to their low dust emission.
Suitable for making master models, it offers as
excellent surface finish compared to other similar products.
They are especially stable and keep their original form years
later due to extensive post-curing process. This offers
especially high compressive strength at a comparatively low
Useful in the automotive industry for gauges and
production jigs which render the desired properties
concerning thermal expansion, stability and wear resistance
for a cost effective solution.
Special care should be given to the surface of vac
forming tools to ensure that the part made has a smooth
surface. For this reason, it is recommended that all surfaces
are sanded down, sealed and, if required, covered with a
release agent to ensure a good demould of the vac formed
part. Polyurethane Designer boards are especially suitable
for small series and prototype quantities.
For mid-range and pre-series production quantities
cores and core boxes can be milled from polyurethane boards.
This saves the traditional step of resin casting. According
to empirical research these boards (1000 series) is able to
withstand 10,000 shots at around 3 bar pressure.
Prototype press tooling, trial press tools, metal
bending and hammer forming tools can be made quickly and
economically using Polyurethane Designer Boards. Modifying
the geometry of the tool is easily possible by cutting out
the part of the tool to be changed, gluing in an insert and
re-milling the contour.High compressive and flexural strength
with good processing properties but also certain elasticity
and the ability for the metal sheet to slide over the
contours during pressing are important factors for sheet
Material for RIM-Tooling should be cost effective,
quick to mill into shape, have a certain temperature
resistance, dimensional stability and a very smooth surface.
Polyurethane Designer Boards satisfy these parameters
according to individual requirements.