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Perma Core

Perma Core® FR

For flame-retarding seams

Perma Core® FR offers excellent permanent flame protection through a special treatment during the dyeing process. The treatment creates an inherent effect, which means that the flame-retarding equipment can withstand even frequent washing and ageing.

Material / Raw material

100 % polyester

Thread construction

core spun thread

Product advantages

  • abrasion and rub-resistant
  • suitable for multi-directional sewing
  • sewing possible with low tensions
  • flame-retarding and self-extinguishing
  • melting point is 250 °C
  • very good resistance to alkaline media
Product selection – Find your product

Thread count


nm 120 (for example) means: 1 thread of 120 m length weighs 1 g. I.e. the higher the number, the finer the thread!

Use our Textile Unit Calculator to calculate units quickly and accurately!


Select a thread size to see the available lengths.

Make-up Article no. NO./TKT. Tex Dtex
705900 36 80 800(2)
Make-up Article no. NO./TKT. Tex Dtex
705901 50 60 600(2)
Make-up Article no. NO./TKT. Tex Dtex
705902 75 40 400(2)
Make-up Article no. NO./TKT. Tex Dtex
705903 120 24 240(2)

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Certified quality

Perma Core® FR is certified according to EN ISO 15025 and thus ideally suited for clothing applications that must meet the DIN EN 469, EN ISO 11612, EN ISO 11611 and EN ISO 14116 standards.

The standards mentioned above stand for the following audits:

  • DIN EN 469: protective clothing for fire fighting (fire bigade)
  • EN ISO 11612: protective clothing for workers exposed to heat and flames (not including welders and firefighters)
  • EN ISO 11611: protective clothing for welding and related activities
  • EN ISO 14116: materials, combinations of materials and protective clothing with limited flame spread