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Ahlstrom-Munksjö specialists have developed Robust™ variants for each of our tea offerings. If you need faster, stronger, more reliable, choose Robust™ to supercharge your conversion process.

What is Robust™?

Robust™ is a dedicated fiber blend for Ahlstrom-Munksjö products, whether BioWeb®, InFuse heat-seal or Classic non-heat-seal.

In our Classic and InFuse variants, this special blend makes our webs stronger, more flexible and allows us to run more reliably and faster on current machines

For InFuse, this also means no more bleed-through during heat-sealing. You can now run continuously!

With BioWeb®, our Robust™ version allows for increased mechanical stability and a wider heat-seal window, which means no more lost time while adjusting your equipment.

That means BioWeb® Robust™ can now be a substitute for traditional heat-seal materials!


  • Convert tea bags faster than ever with Robust™
  • Increased reliability makes it an ideal partner during production
  • Versatility allows for easy web switches


All materials used to manufacture these grades are certified in accordance with US FDS regulation 21 CFR176.170 and/or EU regulation 1935-2004.

Learn more

For more information, please see the attached related product documents and links, or email us at

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