Glastherm Insulation

The installation or upgrading of mold base or press platen insulation is one of the highest-returning investments a molding operation can make today. Properly insulated molds require less energy to operate. Adequate insulation also facilitates temperature regulation within the tool.

Glastherm® thermal insulating sheet is an excellent choice for mold insulation applications. Glastherm® sheet offers significant advantages when compared with other materials such as mica, asbestos concrete or calcium silicate. Glastherm® sheet is an efficient thermal insulator and is strong to resist the effects of molding pressure and rough handling. It is resistant to oil and water absorption and is completely asbestos-free.

Grades of Glastherm Thermal Insulating Sheet

Four grades of Glastherm® insulating sheet are currently available.
They offer a combination of high physical strength and low thermal conductivity.

  • Grade S Sheet
    A general purpose insulating sheet with an economical combination of thermal and physical properties. Recommended for processes where the continuous operating temperature does not exceed 425°F. Grade S is particularly suited to the rubber molding industry.

    Download Grade S Data

  • Grade HT200 Sheet
    A thermal insulating sheet with superior strength and heat resistance for applications using temperatures up to 550°F. Designed for plastics and zinc die cast mold requirements.

    Download Grade HT200 Data

  • Grade HT220 Sheet
    This is a thermal insulating sheet that combines low thermal conductivity with very high compressive strength.

    Download Grade HT220 Data

  • Grade HT250 Sheet
    A thermal insulating sheet that is employed to save energy during pressing. Used primarily in hydraulic, wood and tire presses.

    Download Grade HT250 Data