Rigid Mica sheets

Product introduction

PAMICA 5662 series are Rigid Mica sheets for heater consisted of high quality Muscovite and phlogopite mica paper, impregnated with high temperature resistant organic silicon resin after melting and laminating process.

They are the ideal alternative for asbestos insulations, and specially developed for providing outstanding thermal and electrical insulation for various heating elements used in household and industrial appliances such as hair dryers, tumble dryers, strip heaters,and for all other applications where excellent resistance to thermal, mechanical and electrical properties are required. Fire resistance classification UL94 (94 V-0), IEC 60371-3-3 conformity.

    Pamica® Mica sheet

    Products Type Thickness Standard Size Remark
    Rigid Mica sheets PB5662 0.3-1.5MM 1000x2400MM Suitable for corrugated mica part,small punched mica part,high strength framework of heater.
    Flexible Mica sheet PB5161 0.08-6MM 1000*2400MM Suitable to winding or wrapping, No recovery.
    Overthick Mica plate PB5761 2-100MM 1000*2400MM High dielectric strength, suitable for machined mica parts with drilling,milling and turning.
    Mica Commutator Sheet PB5531 0.15-2.0MM 1000*1200MM Insulation between copper segment of commutators

    They are offered in different types to meet individual requirement of users as follows:

    Type Instructions
    PB5662-L A special low smoke and blister-free muscovite grade. It fully resists the extreme high temperature cycles typically encountered for example, in food grade toasters, micro-wave oven
    PB5662 Standard muscovite grade for all heating elements of hair dryers, irons, heating oven, band heaters, nozzle heaters, etc.
    PB5662-G A higher density muscovite grade with smoother surfaces by steel pressing.. Most suitable for punching highly detailed pieces or when imprinting is required.
    PJ5662-L A special low smoke and blister-free phlogopite grade. Softer and more heat resistant.
    PJ5662 The standard Phlogopite grade for heating elements operating in an extreme temperature range


    Sheet of 1000 X 600mm,1000 X 1200mm, 1000 X 2000mm,1000 X 2400mm.
    Thickness 0.1-1.95mm.
    Customized strips or parts according to customers’ drawings and/or requirements

    Technical Date

    Type PB5662 PB5662-L PB5662-G PJ5662 PJ5662-L Test Standard
    Mica content % ≥90 ≥90 ≥90 ≥90 ≥90 IEC371
    Bond content % ≤10 ≤8 ≤12 ≤10 ≤8 IEC371
    Density g/cm3 1.7-2.25 1.7-2.25 1.7-2.35 1.7-2.25 1.7-2.25 IEC371
    Heat resistance Continuous ℃ 500 500 500 700 700 -
    Intermittent ℃ 700 700 700 900 900 -
    Heat loss at 500 ℃ % ≤1 ≤1 ≤2 ≤1 ≤1 IEC371
    at 700 ℃ % ≤2 ≤1.5 ≤3 ≤2 ≤1.5 IEC371
    Flexural strength N/mm2 ≥160 ≥120 ≥180 ≥140 ≥100 GB/T5019
    Water absorption 24h/23 ℃ % ≤1 ≤2 ≤0.5 ≤1.5 ≤2.5 GB/T5019
    Dielectric strength kV/mm ≥20 ≥18 ≥20 ≥20 ≥18 IEC243
    Volume resistivity 23 ℃ ohm.cm >1017 >1017 >1017 >1017 >1017 IEC93
    500 ℃ ohm.cm >1012 >1012 >1012 >1012 >1012 IEC93