Polypropylene fibre

Polypropylene (or PP for short) belongs to the polyolefin family and is the most widely used plastic in Europe in terms of quantity. This is due to its flexible areas of application, the low price of the raw material and its good processability. Its very low density together with good strength values and easy handling also make PP a very attractive starting material for fibre production. As pure polypropylene is very susceptible to oxidation from atmospheric oxygen, UV and thermal stabilisers are added during the manufacturing process. The polypropylene fibre materials offered by STW are manufactured using the melt spinning process.

Pros and cons
Polypropylene fibre Properties


  • High strength
  • Good elasticity
  • Hydrophobic and therefore very resistant to mould
  • Alkali-resistant
  • Low density (specific weight)


  • Only UV-resistant thanks to stabilisers

Polypropylene fibre
Manufacturing process

Polypropylene is manufactured using organometallic catalysed polymerisation. Either the Ziegler-Natta catalysts (named after their inventors) or the somewhat more recent metallocene catalysts are used here. Depending on the catalyst used and the required property profile, isotactic or syndiotactic polypropylene can be produced. The good and easy processability of polypropylene allows a variety of fibre production options. Primarily, a variety of melt spinning techniques are used. Fibres based on the film-to-fibre or meltblow process are also available.

Polypropylene fibre Programme

Fibre Filler



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Order our Polypropylene fibre Sample box

Contact our fibre experts and discover our extensive STW sample box with numerous raw material samples, personally tailored to your needs and requirements.

Order Polypropylene fibre sample box

technology and
quality of the fibre

State-of-the-art laboratory facilities, quality management according to ISO 9001:2015, energy management according to ISO 50001:2018 and last but not least the high demands on our own work ensure the high quality standards of our Polypropylene fibre. See for yourself.

If you want to know more about the technology and quality of our Polypropylene fibre If you want to know, just get in touch with us. We would be happy to advise you comprehensively and help you with our know-how.

You are looking for the perfect Polypropylene fibre for your application or have an exact requirement profile, which the used Polypropylene fibre must fulfill?

Then you are exactly right, as a technology leader in the field of fibre development and production, we offer you individual solutions and manufacturing processes that ensure constant and reproducible fibre quality.



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