The polyester yarn FLAMEXGREEN helps to make flame-retardant textiles more sustainable.

Instead of virgin polyester, FLAMEXGREEN uses at least 60% recycled PET bottles (post-consumer).

However, the flame-retardant properties and inherent fire protection are still guaranteed. This is because phosphorus-organic compounds are also firmly anchored in the fiber in FLAMEXGREEN, and therefore ensure lasting fire protection even with frequent use or aging.


Upcycling PET bottles can save crude oil, energy and CO2 during production, because it does not require the basic materials ethylene glycol and terephthalic acid, as well as energy to produce a new polyester granulate.

GRS certification guarantees traceability and compliance with social and environmental practices along the entire recycling product chain - from bottle recycling to finished yarn.

Recycling PET-Flaschen
  • OEKOTEX-Standard 100, class 1
  • REACH Conformity
  • Global Recycled Standard Certification
  • Permanent flame protection
  • No reduction of the flame retardant effect
  • Good processing properties




The fire behavior of FLAMEXGREEN is tested per yarn lot

This means that the rating <<material complies with building material class B2>> can also be given. 

Quality controls of the semi-finished and finished products guarantee high product quality.

Our engineers define a detailed production process and a product design in accordance with requirements for the manufacturing of the yarn.

Flame retardant textiles made of FLAMEXGREEN are suitable for a wide range of applications.

Also for strict safety requirements.

With us you keep control over your product.

Logo Oeko-Tex



With our FLAMEX technology, we offer you polyester fibres and polyester yarns of low flammability where a fire protection feature is incorporated inherently in the fibre.

Carl Weiske Produkte


GREENTEX polyester fibres and yarns are made from recycled PET bottles. 100% of the recycled bottle polymer is used in the production of GREENTEX.

Carl Weiske Produkte


Our latest polyester yarn FLAMEXGREEN is made from recycled PET bottles and is also flame retardant.

Instead of virgin polyester, FLAMEXGREEN uses at least 60% recycled PET bottles (post-consumer).

Carl Weiske Produkte

Cool Plus

The COOLPLUS technology refers to cooling and moisture-transporting polyester yarns which drain sweat off from the skin surface particularly fast – keeping your skin cool
and dry for a longer period during sports activities.

Carl Weiske Produkte

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