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NipcoFlex T is a shoe press developed to support customers in saving natural resources while considerably reducing their energy costs and thus improving their competitiveness and market position.
With the NipcoFlex T shoe press up to 5% higher dryness can be achieved compared to a configuration of suction roll pressed against the Yankee or earlier shoe press generations. All this is possible without compromising paper quality. In addition, a production increase or energy savings up to 20% are feasible due to higher after press dryness. The high flexibility of the press shoe allows tracing the Yankee deflections more precisely. This results in a more uniform cross directional dryness profile and sheet adhesion to the Yankee surface. Switching between bulk and dryness mode and vice versa is even possible during production, increasing the machine’s efficiency.
NipcoFlex T shoe press has a much simpler construction compared to the first shoe press generation. The two rubber bellows pressing device instead of several pistons along the machine width results in fewer controls required and thus in simpler operation.
Voith is the reliable partner of many tissue paper producers. Let their experience convince you of the reliable Voith eqipment for tissue production and see how they could benefit from the NipcoFlex T technology.
Currently one of the most capable tissue machines in the world
A new process line was successfully put into operation at the Miltenberg paper mill and headquarters of Fripa Papierfabrik Albert Friedrich KG in the middle of November 2014. The goal of the tissue manufacturer was to maintain a modern and efficient system that is equipped with the latest resource-conserving and energy-saving Voith technology. The centerpiece of the new PM 7 is the EvoDry Y Yankee cylinder with the new NipcoFlex T shoe press technology. It reduces the need for thermal energy by up to 20% due to the high dry content after the press. At the same time it is ideally suited for production of soft paper and thus meets the high quality requirements of Fripa.
The PM 7 is designed for a paper width of 2,700 mm and in the future will produce toilet paper and paper towels from 100% virgin pulp at a working speed of 2,100 m/min. With this production capacity, the Miltenberg PM 7 is currently one of the most capable tissue machines in the world. Voith delivered the entire process line to Fripa. In addition, the entire clothing package which is ideally coordinated with the requirements of shoe press technology was included in the delivery.
"Of particular importance to us were maximally optimized energy consumption, moderate operating costs, low water and waste water values and a high level of paper softness. The new PM 7 meets all these requirements.“
Managing Director of Fripa Papierfabrik Albert Friedrich KG
Great quality at lower costs
In 2010, the press section of Northern Tissue Group TM 1 in Lancaster, United Kingdom, received an upgrade containing the well-proven NipcoFlex T system. Since then, the mill has benefitted significantly from this rebuild: The energy savings in hood gas alone mount up to 21% – not to mention the reduction of the operational costs with regard to an 18% decrease in refining energy costs and a lower consumption of Yankee coating. Furthermore, the dryness has improved by 6%, edge stealing issues have been resolved and an evener cross directional moisture profile could be achieved.
The basis weight of this production line’s tissue paper is between 16 and 21.5 g/m² and the machine itself is designed for speeds of around 1,650 m/min. In October 2013 the mill has been taken over by the Sofidel Group, the sixth largest manufacturer of tissue paper in the world.
Saving millions in gas and steam
At Luohe, in the Chinese region of Henan, the twin machines Yinge TM 1 and TM 2 are equipped with NipcoFlex T shoe presses from Voith. The decision of the Yinge management in favor of the well-known Voith shoe presses has proven its own value in terms of cost savings and quality. In comparison to the suction press roll, the flexible shoe press allowed savings of 5% in steam and 52% in gas consumption, resulting in annual cost savings of RMB 10 million (€ 1.16 million). Moreover, the post-press dryness could be increased by 5%.
In 2012, the two identical lines for the production of tissue paper in a basis weight range of 12-30 g/m² were installed and started up. Apart from the NipcoFlex T shoe press, the lines include the entire stock preparation, the wet end process and the tissue machines, from the headbox to the reel. These Voith tissue machines are designed for an operating speed of 1,900 m/min and an annual production capacity of 60,000 tons.
“After this most recent investment we can obtain a dry content after the press which is 5% higher than with conventional technologies. Thus we can save 20% of thermal energy in the dryer section.”
Luohe Yinge Tissue Paper Vice General Manager
Production increase and energy savings going well together
In order to satisfy the promising high growth Brazilian market, Mili decided to invest in the future of their tissue machines. Therefore, in 2013, the TM 4 in Três Barras was equipped with the NipcoFlex T shoe press system from Voith that has since confirmed its value for the company. The production parameters of the Mili TM 4, a machine producing toilet paper, could be improved in many areas. Its thermal energy consumption was lessened by 14% and the post-dryness improved by 3.4%. Moreover, the rebuild had a significant impact on the production speed, which increases the output by 5.4%. The paper quality also benefitted from the new equipment with regard to an evener cross directional moisture profile and the constantly high degree of bulk at a lower virgin fiber input.
The Mili TM 4 is now running at 1,456 m/min, instead of 1,300 m/min as before the upgrade, and produces toilet paper of around 15 g/m² basis weight.
Superlative paper quality and maximum productivity can only be achieved if the press is working at peak efficiency. Professional service, carried out by our specialist personnel, avoids unexpected paper machine downtimes.