FORMING CHEMCAST GP AND
VICAL SHEET
INTRODUCTION
One of the most useful properties of Chemcast®
GP acrylic Plastic is its formability. Being thermoplastic, it
becomes soft and Pliable when heated and can then be formed to
almost any desired shape. As the material cools, it stiffens and
retains the shape to which it has been formed.
The size, shape and optical requirements of the
formed part generally govern the choice of forming method to be
used. Regardless of the method used, the following principles
must be observed for best results.
- Chemcast® GP G blanks must be cut larger than the
finished piece size to allow for minor shrinkage on
heating.
- The whole sheet should be heated uniformly to the proper
forming temperature (exception-see Strip Heating).
- The sheet should be completely formed before it cools
below the minimum forming temperature.
- The part should be cooled slowly and uniformly while
being held in its formed shape and removed from the mold
while still warm.
TABLE OF CONTENTS
METHODS OF HEATING
