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POROFOL ® 0546

POROFOL ® 0546

POROFOL ® 0546 consists of highly absorbent mica paper based on uncalcined muscovite and PET-film as a carrier.  The mica paper in addition is covered with a thin PET-fleece.  The binder is a hardener-free epoxy resin.  In spite of the PET-film a great number of layers can be impregnated due to the high porosity of the mica paper and the low binder-content,  The PET-fleece prevents a splitting off mica particles during taping process.


POROFOL ® 0546 is excellent suitable for continuous insulation as well as overhang parts of coils and bars for medium and high voltage motors and generators if vacuum impregnation process used. 

Rolls maximum width 1000 mm
Tapes from 10 mm width upward


Minimum 12 months at 20°C
Maximum 24 months at 20°C

At temperatures above 30°C layers may stick together.


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POROFOL ®      
Properties Test Method Unit Value
Nominal thickness IEC 60371-2 mm 0.17 ± 0.02
Total substance IEC 60371-2 g/m² 250± 24
Resin content IEC 60371-2 g/m² 20 ± 4
Mica paper IEC 60371-2 g/m² 160 ± 15
PET-film  IEC 60371-2 g/m² 42 ± 4
PET-fleece IEC 60371-2 g/m² 28 ± 43
Tensile strength IEC 60371-2 N/cm ≥45
Breakdown voltage IEC 60371-2 kV ≥ 5