Thermoplastic Elastomers (TPE) for clean drinking water
To meet these revised requirements, Nordmann partner MARFRAN is now offering a newly developed product family of TPE compounds: MARFRAN E KPW.
Knowledge in action: Stefan Karis on TPE for drinking water applications
(in German)
Based on styrene block copolymers, these compounds meet all the requirements of the new KTW-BWGL guidelines for cold water (23 °C) and hot water (60 °C). The compounds are fully transparent, plasticizer-free and suitable for both injection molding and extrusion applications.
Drinking water hoses made with MARFRAN E KPW provide excellent kink resistance as well as smooth and even surfaces while also being easy to color and bonding exceptionally well to polypropylene.
The new TPE compounds range in hardness from 50-95 Shore A and their low density (under 0.9 g/ccm) and elongation at break of at least 800% make them ideal for creating complex geometries while offering significant material savings. Compared to vulcanized rubber options, in fact, using Marfran TPE offers manufacturers potential savings of up to 30% in production. There are also no disposal costs involved, as these TPEs are 100% reusable.
Current approvals:
- 10/2011/CE
- 1907/2006/CE REACH Annex XIV e XVII
- ROHS
- RAEE
- WEEE
- ELV
- EN71/3
| Product name | Shore hardness | Density (g/cm³) | Tensile strength (MPa) | Elongation at break (%) | Tear resistance (N/mm) |
|---|---|---|---|---|---|
| MARFRAN E KPW 50 | A 50 | 0.89 | 10.0 | 850 | 20.0 |
| MARFRAN E KPW 55 | A 55 | 0.89 | 12.0 | 850 | 25.0 |
| MARFRAN E KPW 60 | A 60 | 0.89 | 14.0 | 850 | 30.0 |
| MARFRAN E KPW 65 | A 65 | 0.89 | 15.0 | 800 | 35.0 |
| MARFRAN E KPW 70 | A 70 | 0.89 | 16.0 | 800 | 40.0 |
| MARFRAN E KPW 75 | A 75 | 0.89 | 16.0 | 800 | 50.0 |
| MARFRAN E KPW 80 | A 80 | 0.89 | 16.5 | 800 | 60.0 |
| MARFRAN E KPW 85 | A 85 | 0.89 | 16.5 | 800 | 75.0 |
| MARFRAN E KPW 90 | A 90 | 0.89 | 17.0 | 800 | 90.0 |
| MARFRAN E KPW 95 | A 95 | 0.89 | 17.5 | 800 | 95.0 |
“Taking care of our world and its resources is one of the key pillars in Nordmann’s corporate strategy – which is why we’re so excited about the latest MARFRAN product offering for drinking water applications. MARFRAN E KPW helps our customers to develop and make products that assure highest water quality combined with superior quality long-term. Providing added value for our customers is our top priority, and that’s just what these sustainable, functional materials offer,” says Stefan Karis, Senior Technical Sales and Product Manager Thermoplastics at Nordmann.
Further information also on processing can be found on the product data sheet.
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