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Dip or Soak Cementing Acrylic
Sheet Pour a moderate amount of solvent cement into a
dip or soak pan. Dip the edge of one of the pieces to be joined
directly into the solvent. It is important that only the edge be
dipped- exposing too much area to the solvent will produce a
weak, slowsetting joint. Leave the piece in the solvent 20 seconds for
thin sheet and 30 seconds for relatively thick material. The time
varies for different solvents and bond strength
requirements-experience will help you plan the correct dipping
time. When you remove the sheet from the cement, hold
for a few seconds at a slight angle to allow excess solvent to
drain off. Carefully, but quickly, place the soaked edge
precisely in place on the other part to be joined. Hold the parts
together for about 30 seconds without applying pressure. This
will allow the solvent to work on the surface of the piece that
wasn't dipped. After 20 seconds, apply some pressure-just
enough to squeeze out the air bubbles. Don't apply too much
pressure as doing so will squeeze out the cement. When pieces are joined, the part should be
placed in a jig or clamp to maintain firm contact for 10 to 30
minutes. Don't allow the parts to move during this critical time. The initial bond forms in five to ten seconds.
Subsequent processing can be carried out after three hours. The
bond will achieve high strength in 24 to 48 hours. Strength will
continue to build for several weeks. |
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Copyright © Plastiglas de Mexico 1999
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