From the Sector

Christoph Kowitz, currently head of WACKER’s Corporate Research Department, takes charge of the Group’s U.S. subsidiary Wacker Chemical Corporation (WCC) at the beginning of May. He succeeds David Wilhoit who has been responsible for WACKER’s North and Central American business since 2015 and is now retiring.

Christoph Kowitz has already held various management positions. After obtaining his doctorate in organic chemistry and polymer chemistry, he began his professional career as a product developer at BASF AG in Ludwigshafen in 1996. From 1997 onwards, he worked for several years as a management consultant for McKinsey in Asia and Europe. After several management positions in the chemical industry, including Germany-based specialty chemicals manufacturer Cognis, Kowitz moved to WACKER in 2013, where he headed the Performance Silicones unit within the WACKER SILICONES division. Since 2018, he has been Head of Corporate R&D and thus also responsible for innovation management within the Group.

Freudenberg Performance Materials (Freudenberg) is expanding its product portfolio by adding an elastic variant of its flexible superabsorbers for modern wound dressings. These superabsorbers increase the comfort level for patients as well as enabling longer wear time, thus reducing the frequency of dressing changes. Further highlights at EWMA include components for more sustainable wound care, PU foams with directly applied silicone adhesives, antimicrobial systems and an innovative hydrophilic debridement foam. The global manufacturer will be welcoming visitors to Exhibition Stand from May 3 – 5 at EWMA 2023.

Freudenberg uses a new technology to manufacture the elastic superabsorbers. Unlike other methods, this technology does not perforate or slit the material, thus achieving a high degree of consistent elasticity. Furthermore, the technology used by Freudenberg bonds the superabsorbent fibers more uniformly with the material, thus enhancing the integrity of this layer in the wound dressing.

Further highlights
Freudenberg is also presenting the M 1714 wound pad component, one example of a sustainable solution that simultaneously delivers on performance. The dressing consists of bio-based fibers and exhibits a smooth wound contact layer. M 1714 has been evaluated for industrial compostability and conforms to ISO 13432. This enables certification of product biodegradability. Further highlights to be presented in Milan include material systems for the antimicrobial treatment of chronic wounds, including systems that do not use active substances.

Wound dressing with silicone adhesive border
With Freudenberg’s silicone coated foams, manufacturers can reduce the number of process steps, thereby avoiding waste, saving energy and simplifying the supply chain. Compared with conventional foam dressings, the Freudenberg foam product also offers higher flexibility for optimal wound bed contouring and reduces the risk of infection by preventing exudate pooling. Freudenberg is showcasing the prototype of a bordered dressing with a silicone adhesive border. In addition, the variant with an extra-strong silicone border enables longer wear time while at the same time ensuring minimal adherence to new skin that forms at the wound edges.

More effective cleansing results and greater patient comfort
Freudenberg is also showcasing an innovative hydrophilic debridement foam. It is ideally suited for use in wound cavities, offers better cleansing results and reduced risk as well as greater patient comfort.

Freudenberg Performance Materials (Freudenberg) has launched an elastic variant of its flexible superabsorbers for modern wound dressings. These superabsorbers increase the comfort level for patients as well as enabling longer wear time, thus reducing the frequency of dressing changes. Freudenberg is debuting the elastic superabsorbers at this year’s Compamed in Düsseldorf, from November 14 – 17, 2022. Further highlights at the trade fair include components for more sustainable wound care, PU foams with directly applied silicone adhesives, and an innovative hydrophilic debridement foam.

Freudenberg uses a new technology to manufacture the elastic superabsorbers. Unlike other methods, this technology does not perforate or slit the material, thus achieving a high degree of consistent elasticity. Furthermore, the technology used by Freudenberg bonds the superabsorbent fibers more uniformly with the material, thus enhancing the integrity of this layer in the wound dressing.

“Our new elastic superabsorbers demonstrate yet again how Freudenberg components help increase comfort for patients, reduce the workload for nursing staff and lower healthcare costs. Our extensive technology platform and our innovative strength are the basis for this,” Dr. Henk Randau, SVP and General Manager Global Division Healthcare at Freudenberg Performance Materials, said.

Focus on eccentric screw pumps and pumps for shear-sensitive materials

Improved productivity and increased lifespan and tailored solutions also for the most demanding applications within the chemicals and plastics industries and in PUR applications – these are the convincing arguments with which Oerlikon Barmag is showcasing its precision metering pumps at this year’s ACHEMA between August 22 and 26, 2022 in Frankfurt. The focus is on the new pump for shear-sensitive conveying media and the new eccentric screw pump.

Eccentric screw pumps – robust all-rounders convey any medium
The requirements for pumps are considerable, as the demand for customized solutions for increasingly complex processes is rising. This is particularly true for Oerlikon Barmag’s new eccentric screw pump range. High wear-resistance, increased durability and robust operation – the new pump is tailor-made for conveying highly-filled, high-viscosity and abrasive media, such as filled adhesives, filled silicones and filled casting compounds, for example. The is the multi-stage seal system, which considerably increases the pump’s lifespan. The upstream shaft sealing ring protects the slide ring seal against excessively-fast wear caused by challenging media. In turn, the optimum alignment of the drive shaft – ball bearing-supported and centrally-guided through the shaft sealing ring – prevents any metal debris caused by friction and hence ensures considerably greater durability. Producers benefit from considerably greater productivity, as the pumps’ maintenance intervals and hence machine downtimes are significantly reduced.

New pump for shear-sensitive materials
For increasingly complex customer-specific process solutions, Oerlikon Barmag is now expanding its GA series, developed especially for the challenging conveying of high-viscosity media, to include the GAB51F for shear-sensitive conveying media. The newly-developed pump with its viscosity range of max. 300 Pas is tailored to conveying high-viscosity, shear-sensitive materials such as adhesives and silicones, for example. “The shear forces impacting the medium within the pump are reduced to a minimum as a result of a specially geometry”, explains Thorsten Wagener, Senior Sales Manager within the Pump Construction business unit. The material is conveyed through the pump in an as gentle and low-pulsation manner as possible and metered precisely at the outlet – ensuring it retains its characteristic properties.

High-speed metering pump with sealed product space
The high-speed metering pump has been especially developed for metering poorly-lubricating media. Here, the main benefit is the sealed product space, which extends the pump’s lifespan considerably. The space that comes into contact with the media is limited to the area around the gears. “As a result, the high-speed pump is particularly suited for applications in the chemicals industry, which frequently involve aggressive acids”, comments Thorsten Wagener.

GM series for low-viscosity media
The pumps in the GM and GA series provide precision metering with low-pulsation feeding of the conveying medium. The multi-stage GM pump conveys low-viscosity media (i.e. 250 bar, 100 mPas) even under high pressure and in the most challenging conditions. The square design from the proven GM series is the standard pump for many metering tasks. The development of the multi-stage pump expands the applications range for the GM series considerably. The round 2-stage GM pump has been developed especially for use in high-pressure technology. It masters the particular challenge of conveying small throughputs with low viscosities. The pump is perfect for 0.05 through 20 cm³/rev feed sizes and is excellently suited for use in high-pressure machines for PUR molded parts, foam slab stock, refrigeration unit insulations and sandwich panels, for example.

GA series pumps for high-viscosity media
The Oerlikon Barmag GA range has been especially developed for the challenging conveying of media with higher viscosities. The GA series pumps are available for conveying volumes of between 1.25 and -30 cm³/rev (0.6-144 l/h). They have been designed for pressures of up to 200 bar, for viscosities of up to 1.500 Pas as well as for temperatures of up to max. 225 °C. With this range of pumps, Oerlikon Barmag offers its customers tailor-made solutions for many technical processes in which high-precision and even metering is of paramount importance.

The drum pump – conveying and metering using a single unit
With the drum pump, the Oerlikon Barmag pump specialists have created a pump designed specifically for conveying and metering high-viscosity materials such as adhesives, silicones and other high-viscosity materials from drums and other large containers and for pressures of up to 250 bar. Its special features not only include the fact that it removes high-viscosity materials from the drum, but that it also meters the medium directly without any additional interim stops.

Sappi will be presenting its inkjet papers for large-format applications alongside its new Fusion Nature Plus containerboard and a variety of silicone-based papers at the FESPA Global Print Expo from 12-15 October 2021 in Amsterdam.

The new Transjet Tacky Industrial is a coated sublimation paper for digital transfer printing – specially developed for high-speed inkjet printing on highly elastic textiles. Also new in the portfolio is the Basejet uncoated sublimation paper, designed for the digital printing of fashion and home textiles, especially light-coloured designs.
Papers consist of 100% recyclable pulp and are FSC-certified.

In Amsterdam, Sappi will also be demonstrating its inkjet papers for large-format applications. Scrolljet is suitable for outdoor applications including City Light and Mega Light systems. It stands out thanks its enhanced whiteness, high colour density and good line sharpness, alongside tear resistance and UV print protection. For indoor graphics and posters, Swiss Matt reveals its unique advantages of accuracy and pin-sharp lines.

Sappi's new Fusion Nature Plus is all about corrugated packaging, POS displays, shelf-ready packaging and carrier bags.

The products from the Silicone Base Papers range – for self-adhesive applications such as car wrapping, outdoor advertising and office materials – complete this year’s Sappi FESPA Global Print Expo portfolio.