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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Product Description

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

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DISCLAIMER: The technical information contained herein is the result of extensive testing in the manufacturer’s laboratories. In addition any application advice given verbally, in writing or by testing corresponds to the best of our knowledge and belief. Since the use and application of any of our products lies beyond our area of control, it remains the responsibility of the user to verify the product’s suitability for their application.

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