| When a component is lasered
an amount of the substance is thermally decomposed (burnt off).
This thermal decomposition, which is the fume, comprises a mixture
of particulate and gas. Glass, ceramic and most base metals do not
generate as much fume, so we will concentrate on polymers which
do.
The gaseous organic compounds are known
as Volatile Organics Compounds, VOC's. The table below shows the
ratio of particulate to gas for a variety of plastic materials.
Non organic gases given off, that need
capturing, tend to be acidic eg HCI and for these applications
a specifically designed media for acid gases is included in the
gas filter. Click here for
further information on acid gases applications.
The chart below gives a break down of the
various chemical compounds produced when lasering various polymers.
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