Insulation sheet It is a part used to prevent heat from mold entering the pen of injection molding machine and for saving energy for mold heaters as well. The insulating sheet has properties that do not conduct electricity, have resistant to high operating temperatures and compression. It will not deformed, resist to impact and hard to break. Insulation panels are available in different sizes and types, including rectangular plates, round plates, perforated plates and non-perforated sheets. It can also be used as insulation in other types of machines.