Rapidly solidifying standard grade for injection
molding.
Abbreviated designation according to ISO 1043: POM
Designation
according to ISO 9988-1: POM-K, M-GNR, 03-002
Ultraform® is supplied in
the form of granules having a bulk density of approx. 850 g/l. Standards packs
are the 25 kg PE bag and the 1000 kg Oktabin (octagonal container). Ultraform®
is not subject to change when it is stored in dry, ventilated rooms. After
relatively long storage (>1 year) or when handling material from previously
opened containers, preliminary drying is recommended in order to remove any
moisture which has been absorbed.
Ultraform® is not a hazardous material
as defined in the German Ordinance on Hazardous Materials. If Ultraform® is
processed properly little or no formaldehyde occurs in the region of the
processing machine. Measures should be taken to ensure ventilation and venting
of the work area, preferably by means of an extraction hood over the barrel
unit.
Ultraform® decomposes when subjected to excessive heat. The
decomposition products formed in this case consist almost exclusively of
formaldehyde, a gas which has a pungent smell even at very low concentrations
and irritates the mucous membranes. Decomposition can rapidly result in the
build-up of a high gas pressure in the barrel of the processing unit. If the die
is sealed there may be a sudden release of pressure via the filling hopper.
Contamination of Ultraform® by thermoplastics that cause ecomposition of
polyacetals, e.g. PVC or plastics containing halogenated fire protection agents,
must be avoided under all circumstances. Even small quantities can cause
uncontrolled and rapid decomposition of Ultraform® during processing. Pellets
and finished parts must not be allowed to come into contact with strong acids
(especially concentrated hydrochloric acid) since they cause Ultraform® to
decompose.
