TAP Plastics
Preparation of Mold Surface Removing Part from Mold
PRODUCT BULLETIN Porous molds (i.e., plaster or wood) must first be sealed The best procedure for separating the part from the
with lacquer or similar coating. A good surface on mold depends on the size and shape of the part.
plaster may be obtained with automobile type primer- In most cases the part can be lifted from the mold after
PARTALL庐 PASTE #2 sealers and lacquers. Plaster molds must be completely loosening around the edges. A jet of air between the
dried. part and the mold at the edge is sometimes useful.
Mold surface should be thoroughly clean and free of On large curved parts it may be necessary to first tap
other parting agents, especially those containing
庐
Partall Paste #2 is a over the surface with a rubber mallet.
silicone, prior to application of Partall庐 Paste #2.
polishing A very strong blast of air (or a few squirts with a CO2
compound made extinguisher) will free very rigid parts that cannot be
Application of Partall庐 Paste #2
from a blend of flexed.
New and Reconditioned Molds
hydrocarbon and On a well-conditioned mold, the part should loosen and
Using a clean, dry rag, apply a thin, even coat of
fall away easily. Using Partall庐 Paste #2 regularly can
microcrystalline Partall庐 Paste #2 to the surface of the mold, covering
assist in the conditioning process, reducing parting
waxes. 3 to 4 square foot sections at a time. Excess should be
problems and increasing production cycle efficiency.
wiped away, also using a clean, dry rag.
Begin buffing immediately (approximately one minute
after application), preferable using a power buffer
It is particularly recommended as a primer coat to equipped with a terry cloth or lamb's wool pad. Keep
power buffer moving constantly so as not to allow a
create a smooth mold surface prior to application
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buildup of friction that could burn through the wax
of TAP PVA Mold Release Liquid.
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coating. Surface should be buffed to a glossy finish.
info@tapplastics.com
In order to insure complete coverage of mold surface,
鈥? Telephone:
repeat entire process 3 to 4 times for initial molding 1.800.246.5055
cycle, waiting 10-15 minutes between coats. Alternate (8-6 PST, M-F; 9-5 PST, Sat)
Partall庐 Paste #2 is also
rubbing motions during application of each coat (i.e., 鈥? Fax or Mail:
useful as a general 1.925.829.6921 (Fax);
up-down on one coat, left-right on another, circular on
or, TAP Plastics Inc.
purpose parting another).
6475 Sierra Lane
agent, especially Wait approximately one hour after application of final Dublin CA 94568
on molds where wax coat before proceeding. Apply one coat of Partall TAP Plastics 鈥? the fantastic plastic place
Paste #2 following every cycle thereafter until mold is
standard
broken in.
silicone waxes hinder The information and recommendations contained in this bulletin are,
to the best of our knowledge, accurate and reliable. No guarantee of
post-finishing operations. Seasoned Molds
their accuracy is made, however, and the products discussed are sold
When waxing the edges of large molds, Using the same process described for new molds, apply without warranty, express or implied, and upon conditions that the
purchasers shall make their own tests to determine the suitability of
one coat of Partall Paste #2 to mold surface and buff.
Partall Paste #2 is an inexpensive wax to use. such products for their particular purposes and uses.
Rewax mold as necessary. June 2001
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