Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Universal hose with corrugated tube liner made from DuPont™ Teflon® PTFE permits small bending radii

‘Fluorflex’ universal hoses, developed by HSI Schlauch- und Armaturentechnik, Mühlheim/Ruhr, Germany in partnership with Fluortubing, Kerkrade/Netherlands and ContiTech Fluid, Korbach, Germany, are constructed with an inner liner made from DuPont™ Teflon® PTFE 62-N.

This liner is designed in the form of a helically corrugated tube and therefore permits very small bending radii. As Tobias Sautmann, CEO of HSI, explains: “This enables installation space to be significantly reduced, particularly with large hose diameters (minimum bending radius for DN 75 is 200 mm). At the same time, this flexibility allows hoses to be fitted in extremely confined spaces, where installation would previously have been impossible.”

Photo (a): DuPont
‘Fluorflex’ universal hoses with their helically corrugated inner liners made from DuPont™ Teflon® PTFE can be installed with very small bending radii.

Photo (b): DuPont
‘Fluorflex’ universal hoses with their helically corrugated inner liners made from DuPont™ Teflon® PTFE are suitable for applications such as transporting inorganic acid and alkali mixtures of any type and concentration as well as mineral oils and mineral oil derivatives. They can replace many conventional hose variants, which might be considered as not sufficiently flexible or resistant.

Teflon® PTFE 62-N combines very good flexural fatigue strength and stress crack resistance with high thermal stability and excellent resistance to nearly all media used in food and pharmaceutical production. This often makes it possible to reduce stock to just one type of hose. A black conductive strip integrated into the corrugated tube dissipates static electricity. The tube can also be supplied in an all-white design, e.g. for the pharmaceutical industry, and with an all-black (i.e. fully conductive) inner liner.

The helical geometry not only ensures high flexibility but also gives the transported medium angular momentum that permits higher conveying speeds and up to shorter emptying times. Thanks to the inherent non-stick properties of Teflon®, the hoses are very easy to clean, even when carrying very high-viscosity media. This – together with the possibility of faster emptying for cleaning or material changes – can achieve significant cost savings in production. Another advantage for users is the ease with which the ‘Fluorflex’ hose system can be fabricated on site using safety clamps without the need for laborious de-corrugation in a salt bath, compressing sleeves or purchasing the costly machinery required for this. Since hose systems can be custom-fabricated quickly in this way, it is usually unnecessary to stock replacement hose lines.

A multi-ply outer jacket comprising an EPDM intermediate layer, a reinforcing braid made from DuPont™ Kevlar® brand fibres and a covering layer specially tailored for the application protects the Teflon® inner liner from damage. Besides EPDM black, the covering layer can also be supplied in NBR black for contact with oil and gasoline, NBR black high-temperature blend for temperatures above 150°C, NBR blue for food applications and EPDM grey for pharmaceutical production. New products are being developed for transport, chemical engineering and the construction industry. The whole system is designed for working pressures of 16 bar and continuous service temperatures of 150°C. Designs for even higher temperatures are possible. Fittings can be supplied in many different materials (VA, PP, PVDF, different coatings such as PFA und ECTFE) and with all currently used connections.

DuPont Fluoropolymer Solutions is a leading producer of fluoropolymer resins, additives, films, finishes and dispersions, PTFE (polytetrafluoroethylene), PFA (perfluoroalkoxy), FEP (fluorinated ethylene propylene), ETFE (ethylene-tetrafluoroethylene) and PVF (polyvinylfluoride), marketed under the registered trademarks DuPont™ Teflon®, DuPont™ Tefzel®, DuPont™ Tedlar® and DuPont™ Zonyl®. Major markets for these fluoropolymer products include the automotive, chemical processing, semiconductor, oil exploration, chemical handling, data communication, aerospace, electronics, houseware and building industries.

DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.

The DuPont Oval Logo, DuPont™, The miracles of science™ and all product names denoted with ® are registered trademarks or trademarks of DuPont or its affiliates.

Note to the editor:
This press release is based on information provided by:
HSI Schlauch- und Armaturentechnik GmbH
Lahnstrasse 47, D-45478 Mülheim an der Ruhr
Contact: Tobias Sautmann,
Tel.: +49 208 99389–22, Fax: –11

Horst Ulrich Reimer | Du Pont
Further information:

More articles from Materials Sciences:

nachricht Researchers demonstrate existence of new form of electronic matter
15.03.2018 | University of Illinois at Urbana-Champaign

nachricht Boron can form a purely honeycomb, graphene-like 2-D structure
15.03.2018 | Science China Press

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

Im Focus: Radar for navigation support from autonomous flying drones

At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.

Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

International Virtual Reality Conference “IEEE VR 2018” comes to Reutlingen, Germany

08.03.2018 | Event News

Latest News

Wandering greenhouse gas

16.03.2018 | Earth Sciences

'Frequency combs' ID chemicals within the mid-infrared spectral region

16.03.2018 | Physics and Astronomy

Biologists unravel another mystery of what makes DNA go 'loopy'

16.03.2018 | Life Sciences

Science & Research
Overview of more VideoLinks >>>