Pulp-Paperworld.com / Asian News

A screen that uses less energy than all comparable products on the market has convinced the Technical Association of Pulp & Paper Industries (TAPPI). The Japanese Voith Paper subsidiary Voith IHI Paper Technology won this year’s Sasaki Award from the respected trade association for its development of the LP Screen.

The new technology, developed for the Japanese market, reduces specific energy consumption at the screening stage to 3-4 kWh per tonne of stock. For comparison, the best competitor product still needs twice as much specific energy.

The secret of the Low Power Screen lies in its construction. It uses the entire screen area to effectively separate accepted from reject stock, thereby improving quality and throughput. A circulation mechanism ensures that the consistency of the suspension is the same throughout the screen’s interior. Reject and accepted stock are separated and conveyed upwards via different outlets. Thickened and heavy reject is mixed with the inflowing stock, ensuring that the pulp has a uniform consistency throughout the entire screen basket.

In addition to its revolutionary low-profile the LP Screen can be combined with a high-performance C-bar screen basket with optimized slot distribution. This improves the efficiency and ensures that it is stable throughout the screen. Specific energy use can be reduced to a minimum and the quality of the stock is improved.

A significant contribution to the Japanese paper industry

The LP Screen is now the sixth development for which Voith IHI Paper Technology has won the Sasaki Award. The prize is awarded annually by TAPPI to Japanese papermakers who have made a significant contribution to the Japanese pulp and paper industry thanks to their technical developments or research.

27 LP Screens have already been installed at customer sites, two others are on the order books. After the break through of Voith Paper in the IntensaPulper development, the LP Screen is just another example how energy savings in the paper industry can be achieved.

Voith Paper is a division of the Voith Group and the leading partner to and pioneer in the paper industry. Through constant innovations, Voith Paper is optimizing the paper manufacturing process, focusing on developing resource-saving products to reduce the use of energy, water, and fibers.

Voith is setting the standard in the paper, energy, mobility, and service markets. Established on January 1, 1867, Voith currently has 39,000 employees, € 5 billion in sales, and over 280 locations worldwide and is one of the largest family-owned businesses in Europe.

Martin Schily

Tel +81 80 5521 8927
E-Mail martin.schily@voith.com

Published in Asian News

High-quality kraft paper from the heart of Europe

Mondi* has made investments at its Štetí paper mill in the Czech Republic to provide top-quality packaging paper from the heart of the European market. The new machine-glazed paper machine supplied by Voith Paper is run by Vacon common DC bus modules and AC drives.

Mondi is a leading international paper and packaging group with operations across 31 countries. Mondi Štetí’s start-up of the PM6 in autumn 2009 was very successful. The new MG (machine-glazed) paper machine is designed to produce annually 55,000 tonnes of white kraft paper in the basis weight of 30-90 g/m2.

This investment was a logical step forward after the PM3 rebuild for white MG grades during 2002. With the new PM6, Mondi Štetí, Czech Republic, now owns two world-class MG machines side by side, strategically located in Central Europe to ensure outstanding delivery service and optimized supply-chain management. The PM6 further reinforces Mondi's position as a leading supplier of bleached, machine-glazed paper for the high-end packaging paper segment.


Vacon products - important tools for improving process and machine control

The new MG paper machine from Voith Paper was started up successfully in August 2009. Voith Paper’s scope of supply included a state-of-the-art head box, wire section, NipcoFlex press, MG cylinder, EcoSoft Calender, MasterReel and leading automation technology. The drive system application and drive control system were supplied by Voith Paper Automation.

Vacon supplied Voith Paper Automation with common DC bus modules and AC drives with a total power of 3.6 MW, providing seamless integration to Voith Paper’s ODC DriveSystem. The common DC bus modules, including non-generative front-end units, active front-end units and inverter units, control the motors of the PM6 and improve process control in terms of runnability, efficiency and quality. The auxiliary drives around the PM6 have also been integrated into machine control, and are controlled by the Vacon AC drives, thus enabling accurate motor controls.

Voith Paper provides solutions that improve the productivity and efficiency of the papermaking process. In a global cooperation agreement signed in May 2008, Voith Paper Automation chose Vacon as their preferred AC drives supplier for paper machine deliveries worldwide. “Reliable and versatile AC drives are an integral part of our solutions, and that is why we chose a supplier with an independent position and a large number of references in the pulp and paper industry,” says Antti Kaunonen, President, Voith Paper Automation. “The Mondi Štetí project demonstrated clearly that the integration of paper machine, automation and drives knowhow provides clear benefits for paper machine performance. This successful project shows that our chosen strategy is the correct one, and we shall continue with this strategy in the future,” Mr Kaunonen concludes.

Positive impact on the environment

Since cleaner production plays a key role in Mondi's sustainability commitments, the new investment was planned with the environment in mind. Despite increasing the volume of paper production in Štetí, the new PM6 machine will actually improve the environmental performance of the mill, with significant reductions in both water consumption and noise emissions.

The PM6 investment also has a positive influence on the surrounding communities by creating new jobs at the mill for highly qualified engineers, lab technicians and machine operators.

Vacon’s scope of supply to PM6


* Common DC bus modules in the power range 6 to 500 kW and with a total power of 3.6 MW
o 4 x Vacon non-regenerative front-end (NFE) power supply
o 1 x Vacon active front-end (AFE) power supply
o 22 x inverter units
* 40 auxiliary drives with a total power of 1750 kW and in the power range 0.3 to 630 kW

The NFE units are connected to a transformer with a 12-pulse supply system to achieve a low THD level.

Vacon’s common DC bus product portfolio meets all the requirements with a flexible architecture, comprising a selection of active front-ends, non-regenerative front-ends, fundamental front-ends, inverters and brake choppers in the entire power range up to 5300 kW at 380 VAC to 690 VAC. The drive components are based on Vacon NX technology. Common DC bus components are used in a wide range of combinations. In a typical DC bus configuration, drives that are braking can transfer the energy directly to drives in motoring mode.

The NFE (non-regenerative front-end) unit is a unidirectional (motoring) power converter for the front-end of a common DC bus drive line-up. The NFE is a device that operates as a diode bridge using diode/thyristor components. A dedicated choke is used at the input.

The AFE (active front-end) unit is a bidirectional (regenerative) power converter for the front-end of a common DC bus drive line-up. An LCL filter is used at the input. This unit is suitable for applications where low mains harmonics are required. AFE is able to boost DC link voltage (default +10%) higher than nominal DC link voltage (1.35x UN).

The INU (Inverter unit) is a bidirectional DC-fed power inverter for the supply and control of AC motors. The INU is supplied from a common DC bus drive line-up. A charging circuit is needed if the possibility of connecting to a live DC bus is required. The DC charging circuit is integrated up to 75 kW (FR4-FR8) and external for higher power ratings (FI9-FI14).

* Mondi is a leading international paper and packaging group with operations across 31 countries and an average of 33,400 employees.

Located in Štetí, on the banks of the Elbe River, 40 kilometres north of Prague in the Czech Republic, Mondi Štetí a.s. is a leading manufacturer of high grade sack kraft and kraft papers, as well as a major European supplier of corrugated case materials and market pulp.

The production of pulp at the site began in 1949, when the mill was called “Sepap”. Over the following decades the name and ownership of the mill changed several times. Today, Mondi Štetí a.s. annually produces 500,000 metric tonnes of pulp, paper and board of world-class quality that is sold on all continents.

Published in Jun 2010

In February 2010, Voith Paper successfully rebuilt Kimberly Clark’s tissue machine TM 2 at the Enstra Tissue Mill in South Africa. The order covered structure refurbishment including installation and supervision service. To ensure improved operational reliability the framing was given a general overhaul and the main framing parts were replaced.

Kimberly Clark Enstra produces tissue products with various basis weight ranges and furnishes on two tissue machines. TM 2 produces tissue with a web width of 3,450 mm. Start-up of this asset was in 1976.

Voith Paper has many years of experience in the field of forming and structural reconstruction and is one of the leading providers of innovative rebuild solutions.

Voith Paper is a division of the Voith Group and the leading partner to and pioneer in the paper industry. Through constant innovations, Voith Paper is optimizing the paper manufacturing process, focusing on developing resource-saving products to reduce the use of energy, water, and fibers.

Voith is setting the standard in the paper, energy, mobility, and service markets. Established on January 1, 1867, Voith currently has 39,000 employees, € 5 billion in sales, and over 280 locations worldwide and is one of the largest family-owned businesses in Europe.

Voith is an official partner in the "Germany - Land of Ideas" initiative.

Contact
Anja Zittlow
Tel +49 7321 37-2231 | Fax +49 7321 37-7227
E-Mail anja.zittlow@voith.com

Published in May 2010

After installation of a long nip style press in the board machine at Porstendorf, Germany, MultiFlex V3 press felts from Voith Paper were installed for start-up. The decision was thus made to introduce a clothing supplier not previously active in Porstendorf. The concept was customized. In particular, the outstanding service at start-up confirmed to the team in Porstendorf that the right decision had been made in choosing the clothing supplier. Meanwhile the new press has already been running several weeks and in summary it can be said that all technological specifications have been met or surpassed. "Especially noteworthy are the 52% dry content achieved and the width shrinkage which was reduced by more than 10%", observes plant manager Steffen Söll.

The board machine with 2.32 m net width and a speed of 80 m/min produces 40,000 tons of chipboard per year. At the turn of the years 2009/2010, the two previous reversed presses were replaced by a long nip style press for press loads up to 500 kN/m. A straight-through press was positioned at the end of the press section for setting the desired surface characteristics. The goals of the conversion were: improvement of the energy balance, reduction of production disturbances due to vaporization bubbles and improvement of ply bond strength.

The success of MultiFlex V3 is based on Voith Paper's specialty for the challenges in the press section, the well-proven Vector technology. This comprises a tri-axial non-woven base fabric structure that provides elasticity in all three spatial directions for excellent compaction resistance and self-cleaning properties. It also has high active void volume for controlled dewatering and handling large amounts of water. Even pressure distribution leads to more uniform drying whilst the multi-axial structure provides low flow resistance and maintained permeability.

Voith Paper is a division of the Voith Group and the leading partner to and pioneer in the paper industry. Through constant innovations, Voith Paper is optimizing the paper manufacturing process, focusing on developing resource-saving products to reduce the use of energy, water, and fibers.

Voith is setting the standard in the paper, energy, mobility, and service markets. Established on January 1, 1867, Voith currently has 39,000 employees, € 5 billion in sales, and over 280 locations worldwide and is one of the largest family-owned businesses in Europe.

Voith is an official partner in the "Germany - Land of Ideas" initiative.
Christina Bauer
Voith Paper | Germnay
Tel +49 7321 37 2026 | Fax
E-Mail Christina.Bauer@voith.com

Published in Mar 2010

Dr. Rogowski Steps Down and Dr. Manfred Bischoff Takes Over as Chairman of the Shareholders' Committee and Supervisory Board of Voith AG

Heidenheim. Dr. Michael Rogowski is today relinquishing his offices as Chairman of the Shareholders' Committee and the Supervisory Board of Voith AG. He will be succeeded by Dr. Manfred Bischoff. Bischoff is the Chairman of the Supervisory Board of Daimler AG and has been a member of the two Voith boards since 1999. The changeover takes place within the scope of the long-term corporate planning of the family-owned company Voith and was officially announced a year ago.

Read more here...>

Published in Mar 2010

Voith Paper: 'Top Green Supplier', 'Intellichoix award' and 'Energia Award' in the field of technological innovation - these are three of the awards that the Canadian paper, tissue and board manufacturer Cascades has recently received.

Cascades more efficient and ecological with Voith technology

'Top Green Supplier', 'Intellichoix award' and 'Energia Award' in the field of technological innovation - these are three of the awards that the Canadian paper, tissue and board manufacturer Cascades has recently received. To support its green image, Cascades has decided to preferably work with suppliers that adopt the same philosophy and pay special importance to sustainability. As part of this initiative, Voith Paper has received on February 2nd from Mr. Alain Lemaire, President of Cascades, the 'Sustainable Development Supplier Award 2009' which was awarded for the first time.

To evaluate suppliers, the Global Reporting Initiative, an international network for establishing sustainability standards in companies and organizations, was used. The questions covered the categories of 'product characteristics', 'environment', 'social and working conditions', 'economy' and 'transparency and reporting'. Voith Paper's technology is "a key element that helps us lower our operating costs by extending the life of the fabrics and related equipments." That's how Louise Fillion, Purchasing Manager, explained the decision to name Voith Paper as the first recipient of this award.

Voith Paper is a division of the Voith Group and the leading partner to and pioneer in the paper industry. Through constant innovations, Voith Paper is optimizing the paper manufacturing process, focusing on developing resource-saving products to reduce the use of energy, water, and fibers.

Voith is setting the standard in the paper, energy, mobility, and service markets. Established on January 1, 1867, Voith currently has 39,000 employees, € 5.1 billion in sales, and over 280 locations worldwide and is one of the largest family-owned businesses in Europe.

Voith is an official partner in the "Germany - Land of Ideas" initiative.

Published in Feb 2010
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