From the Sector

Carbon dioxide-based fibre for climate protection and interdisciplinary training with novel Smart Textiles test rig

The Wilhelm-Lorch-Stiftung, based in Frankfurt am Main, Germany, honours a project of the Institut für Textiltechnik of RWTH Aachen University, short ITA, and awards a sponsorship prize to the ITA graduate Ricarda Wissel on 25 June 2020. She is awarded for her outstanding bachelor thesis " Implementation of elastic yarns made from carbon dioxide based thermoplastic polyurethane in socks " with funding for a subject-specific continuation of her education. The ITA receives the project sponsorship prize for the project "Smart Textiles - an interdisciplinary training course to promote young scientists in future technologies", which was submitted to the Wilhelm-Lorch-Stiftung by ITA´s PhD candidate Simon Kammler.

Carbon dioxide-based fibre from industrial waste contributes to climate protection

ITA scientist Dr.-Ing. Pavan Manvi has developed a melt spinning process at ITA for the production of elastic yarn from thermoplastic polyurethane, in which carbon dioxide is used as one of the raw materials. In her bachelor thesis, Ricarda Wissel successfully developed a process chain for the CO2-based yarn in a textile end product for the first time. In cooperation with the company FALKE and Dr Manvi, who supervised Ms. Wissel's work, the yarn was used to produce a sock (see figure "FALKE sock with carbon dioxide filaments").

By reusing carbon dioxide from industrial waste as a raw material for textile and clothing products, the carbon dioxide balance can be improved and thus contributes directly to climate protection. The sponsorship prize of the Wilhelm-Lorch-Stiftung is endowed with 6,000 € for the specialist further training of Ms. Wissel.

Interdisciplinary training with development of a new type of measuring stand for the future-oriented research field "Smart Textiles

The development of textiles with additional digital functions, so-called "Smart Textiles", is considered a future-oriented field of research. In his project submission, ITA´s doctoral candidate Simon Kammler presented a concept for a lecture series on Smart Textiles at ITA and develops a new type of measuring stand for measuring the capacity and conductivity of fibres. The project is funded by the Wilhelm-Lorch-Stiftung with a prize money of 10,000 Euro.

Smart Textiles enable the textile to interact with the environment and the human user. Today they are therefore in demand in many areas of everyday life such as sport, health, living, life and mobility and offer completely new practical solutions. In combination with digital networked services, Smart Textiles promise support and innovation in almost all situations of daily life.

With the conception of a new lecture series, Mr. Simon Kammler is supporting ITA in its goal of providing the best possible training for young scientists. The focus is on imparting far-reaching interdisciplinary skills in order to master the challenges of current fields of research.

Background:

The Wilhelm-Lorch-Stiftung supports particularly talented young people from all areas of the textile industry. Its purpose is the promotion of subject-specific education and further education as well as the promotion of projects at universities, academic schools and vocational schools, which are characterised by the sustainable communication of innovative learning content in science and research. In total, thirteen sponsorship prizes were awarded in 2020. Due to the Corona crisis, the forum of TextilWirtschaft, which is normally the venue for the awards ceremony, unfortunately had to be cancelled in 2020.

• Lenzing will hold 51 percent in a future joint venture
• Largest single line dissolving wood pulp plant in the world
• Basic engineering and permitting process to be kicked off
• 43,000 hectares FSC® certified plantation secured
• Final investment decision subject to outcome of basic engineering expected in 2019

Lenzing Group, world market leader in specialty cellulosic fibers and Duratex, the largest producer of industrialized wood panels of the Southern Hemisphere, announce that they agreed on the terms and conditions to form a joint venture to investigate building the largest single line dissolving wood pulp (DWP) plant in the state of Minas Gerais, close to Sao Paulo, Brazil. This decision supports the backward integration and the growth in specialty fibers, defined in Lenzing’s corporate strategy sCore TEN.

The joint venture will investigate the construction of a 450,000 t DWP plant, which is expected to become the largest and most competitive single line DWP plant in the world. Dissolving wood pulp is the key raw material for the production of Lenzing’s bio-based fibers. For the future operation, the two companies have secured a plantation of 43,000 hectares that will provide the FSC® certified biomass. The plantation is fully in line with Lenzing’s wood and pulp sourcing policy. The basic engineering and the application for required permits and merger clearances will now be started.

Lenzing will hold 51 percent of the joint venture which will operate the mill, while Duratex’s share will be 49 percent. The estimated cash investment by the joint venture for the construction of the DWP mill is expected to be somewhat above USD 1 bn (based on current FX rates, net of generic tax refunds and the outcome of the basic engineering study). The joint venture will supply the entire volume of dissolving wood pulp to the Lenzing Group. This step is an essential milestone in the group’s ambition to grow its specialty fibers business.

“Specialty cellulosic fibers are an important contribution to make the global textile industry more sustainable. In line with our corporate strategy sCore TEN we are committed to strong organic growth in this field. We are pleased that with Duratex, a recognized leader in sustainable forestry management, we have a strong partner in this joint venture. Together we will create a very sustainable and competitive raw material base for Lenzing’s global expansion plans”, says Stefan Doboczky, Chief Executive Officer of Lenzing Group.

“Projects of this nature are the result of our strategic plan and of our team’s effort towards drawing Duratex’s future. The Company is known for its financial solidity, high quality, innovation and sustainability; the results of a history spanning over six decades. The partnership with Lenzing for the construction of the largest single line dissolving wood pulp plant in the world is an honor for Duratex. Working with Lenzing, a global benchmark in technology, high quality and corporate governance makes us very proud. We are sure that this joint venture is going to be successful”, affirms Duratex’s Chief Executive Officer Antonio Joaquim de Oliveira.

The final investment decision to build the dissolving wood pulp plant is subject to the outcome of the basic engineering studies and the approval by the respective supervisory boards.

In May 2017, Jochen Adler, Vice-President and Chief Technology Officer at Oerlikon Textile GmbH & Co. KG, presented a Oerlikon Barmag take-up winder as a partial gift to Prof. Dr Thomas Gries, head of the Institut für Textiltechnik (ITA) at RWTH Aachen University. The new Type ASW602 winder, which is equipped with modern control software and user interface, replaces the former institute’s Barmag take-up winder.

Due to this modernisation, ITA has access to a latest generation take-up winder which is used for various research projects. The new winder is applied at ITA’s two pilot melt spinning plants and ensures the transfer of new research and development insights into the pilot scale. Furthermore, this winder has two winding positions and operates with winding speeds between 2500 m/min and 5500 m/min. The new winder is suitable for all kinds of polymers, from polypropylene to polyethylene, polyester, polyamide etc. as well as for the production of several types of yarn, such as industrial yarn, pre-oriented yarn and fully-drawn yarn.
“We thank Oerlikon Barmag for the generous partial gifting and the support during the set-up of the new take-up winder”, says Prof. Dr Thomas Gries. “The new equipment will keep the institute’s machine park on a high and powerful level.” The head of ITA’s chemical fibre department Dr Thorsten Anders adds: “This winder is designed for the needs of chemical yarn research. It allows state of the art technology research and development and pilot-scale production. We will use it for the melt spinning plants in the single- and bi-component spinning process. This way, we can access a wide variety of producible yarn types.“