SleepTech Magazine / May - June 2017

148
Environmental implications
TDI is a confirmed carcinogen. Its
emission is closely monitored by
the authorities. TDI tape detectors
are installed around the factories
it is produced. To minimize the
emission of TDI, most of the process
equipment is shielded.
Like many reactive chemicals, “TDI
products” can create hazards if
handled carelessly. When used
in accordance with current regulations
and industry practices, TDI
can be used safely. Engineering
controls, personal protective
equipment, and long-established
workplace practices are widely
used throughout the industry to
protect workers and the public.
Traditionally CFC (chlorinated fluorocarbons)
based solvents were
used as blowing agents. In the
late 80’s, the ozone layer depletion
effect of CFC based chemical
was established. The use of CFC
was gradually banned. Methylene
chloride, which is inert to ozone, is
used as a substitute for CFC.
Lots of “offcuts” are generated in
the foam cutting process. They are
collected and sent to the associated
recycle plant to produce a
lower grade flexible foam. This
type of foam is widely used in the
production of carpet backings and
packing materials. By this way the
net amount of waste produced in
the process can be minimized.
TDI should only be handled by
knowledgeable, well-trained
personnel who thoroughly understand
the hazards associated with