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REMOVING PAINT FROM
CHEMCAST® GP Paint may be removed from Chemcast® GP acrylic
plastic with solvents, Trialene soap, or by sand blasting. SOLVENTS Solvents used for removing paint from
Chemcast® GP must be carefully chosen because most solvents tend
to cause crazing, particularly on deeply drawn formed parts. The
best solvent for paint removal is cyclohexanone. The Chemcast®
GP should be wiped with a solventsoaked rag. It should not be
soaked in the cyclohexanone. Solvesso 100 may also be used. The
painted Chemcast® GP part may be immersed in the solvent for a
period often minutes or less. After soaking, the paint may be
removed by wiping the surface with a cloth. When solvent is used to remove paint from
Chemcast® GP, it should be annealed to remove the residual
solvent which may cause crazing. While the initial solvent
treatment may not craze the Chemcast® GP, subsequent contact
with other solvents may cause crazing unless the Chemcast® GP is
properly annealed. TRIALENE SOAP Trialene soap is particularly useful for paint
removal when the paint has not been on the Chemcast® GP for a
long time. Once the paint has been removed, the Trialene soap
must be thoroughly cleaned from the Chemcast® GP surface by
rinsing with fresh water. The Chemcast® GP must be dried before
repainting. Caustic soda and trisodium phosphate may also
be used for removing paint from Chemcast® GP. CAUTION: Trialene soap, caustic soda, and
trisodium phosphate attack human skin very quickly. The
operator's hands should be protected by rubber gloves. Safety
goggles should be worn while using these compounds. SAND BLASTING Sand blasting will also remove paint from
Chemcast® GP, but this method is generally more expensive than
the other methods and leaves the Chemcast® GP with a frosted
surface. Only a fine grade of sand should be used. Sand blasted
surfaces sometimes have a grayish tone when they are repainted
with white paint. |
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Copyright © Plastiglas de Mexico 1999
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