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13.09.2022

Ionofibres a new track for smart and functional textiles

Electronically conductive fibres are already in use in smart textiles, but in a recently published research article, ionically conductive fibres have proven to be of increasing interest. The so-called ionofibres achieve higher flexibility and durability and match the type of conduction our body uses. In the future, they may be used for such items as textile batteries, textile displays, and textile muscles.

The research project is being carried out by doctoral student Claude Huniade at the University of Borås and is a track within a larger project, Weafing, the goal of which is to develop novel, unprecedented garments for haptic stimulation comprising flexible and wearable textile actuators and sensors.

In Claude Huniade’s project, the goal is to produce conductive yarns without conductive metals.
"My research is about producing electrically conductive textile fibres, and ultimately yarns, by coating non-metals sustainably on commercial yarns. The biggest challenge is in the balance between keeping the textile properties and adding the conductive feature," said Claude Huniade.

Electronically conductive fibres are already in use in smart textiles, but in a recently published research article, ionically conductive fibres have proven to be of increasing interest. The so-called ionofibres achieve higher flexibility and durability and match the type of conduction our body uses. In the future, they may be used for such items as textile batteries, textile displays, and textile muscles.

The research project is being carried out by doctoral student Claude Huniade at the University of Borås and is a track within a larger project, Weafing, the goal of which is to develop novel, unprecedented garments for haptic stimulation comprising flexible and wearable textile actuators and sensors.

In Claude Huniade’s project, the goal is to produce conductive yarns without conductive metals.
"My research is about producing electrically conductive textile fibres, and ultimately yarns, by coating non-metals sustainably on commercial yarns. The biggest challenge is in the balance between keeping the textile properties and adding the conductive feature," said Claude Huniade.

Currenty, the uniqueness of his research leans towards the strategies employed when coating. These strategies expand to the processes and the materials used.

Uses ionic liquid
One of the tracks he investigates is about a new kind of material as textile coating, ionic liquids in combination with commercial textile fibres. Just like salt water, they conduct electricity but without water. Ionic liquid is a more stable electrolyte than salt water as nothing evaporates.

"The processable aspect is an important requirement since textile manufacturing can be harsh on textile fibres, especially when upscaling their use. The fibres can also be manufactured into woven or knitted without damaging them mechanically while retaining their conductivity. Surprisingly, they were even smoother to process into fabrics than the commercial yarns they are made from," explained Claude Huniade.

Ionofibres could be used as sensors since ionic liquids are sensitive to their environment. For example, humidity change can be sensed by the ionofibers, but also any stretch or pressure they are subjected to.

"Ionofibres could truly shine when they are combined with other materials or devices that require electrolytes. Ionofibres enable certain phenomena currently limited to happen in liquids to be feasible in air in a lightweight fashion. The applications are multiple and unique, for example for textile batteries, textile displays or textile muscles," said Claude Huniade.

Needs further research
Yet more research is needed to combine the ionofibres with other functional fibres and to produce the unique textile devices.

How do they stand out compared to common electronically conductive fibres?
"In comparison to electronically conductive fibres, ionofibers are different in how they conduct electricity. They are less conductive, but they bring other properties that electronically conductive fibers often lack. Ionofibres achieve higher flexibility and durability and match the type of conduction that our body uses. They actually match better than electronically conductive fibres with how electricity is present in nature," he concluded.

Source:

University of Borås - The Swedish School of Textiles

13.07.2022

VUB: Hybrid threads based on ultrafine metallic micro-wires

After three years, VUB a.s again got the chance to actively participate in the European trade fair Techtextil 2022m being present at a joint stand of Czech companies active in production and application of technical textiles, organized by Clutex - Cluster Technical Textiles.

In cooperation with partners from academic and production sphere many products were developed over the past years, sold by VUB under the brand Clevertex. For the presentation at the fair, a wide range of ESD protective clothing for the electrotechnical industry and for each worker dealing with electrostatic discharge sensitive components was on display. As well as another product line of the Clevertex brand representing wearable skincare textile products with antiseptic effects based on purely natural textile materials.

After three years, VUB a.s again got the chance to actively participate in the European trade fair Techtextil 2022m being present at a joint stand of Czech companies active in production and application of technical textiles, organized by Clutex - Cluster Technical Textiles.

In cooperation with partners from academic and production sphere many products were developed over the past years, sold by VUB under the brand Clevertex. For the presentation at the fair, a wide range of ESD protective clothing for the electrotechnical industry and for each worker dealing with electrostatic discharge sensitive components was on display. As well as another product line of the Clevertex brand representing wearable skincare textile products with antiseptic effects based on purely natural textile materials.

Attention was paid to the advanced solutions for smart textiles and e-textiles products esp. electrically conductive hybrid threads based on ultrafine metallic micro-wires. A significant advantage of these threads lies in their full compatibility with standard textile manufacturing processes, and possibility of customization in terms of fineness, electrical conductivity and temperature resistance of individual thread. As an example of one of the applications of conductive threads, different types of woven elastic conductive ribbons were demonstrated, which could be used as bus bars or as textile conductors wherever a variable length of conductive element is required without the negative influence on their electrical resistance during the change the length.

More information:
VUB micro-wires
Source:

VÚB a.s.
 

05.04.2022

ADD-ITC 2022: Call for Abstracts

The Aachen-Dresden-Denkendorf International Textile Conference 2022 as face-to-face event takes place on-site in Aachen on December 1-2, 2022.

There is the opportunity to contribute to the conference program and submit an abstract for a talk or poster presentation. The Call for Abstracts for oral presentations ends on May 6, 2022. The Call for Abstracts for poster contributions is open until July 31, 2022.

The ADD-ITC is a conference for experts from the fields of
·    Textile chemistry, finishing & functionalization
·    Synthetic Fibers & Materials
·    Machinery, Processes & Composites

The conference program includes plenary lectures and themed sessions in the areas of
·    Sustainability in the textile industry
·    Future of textile production
·    Textiles for medicine and health
·    Smart textiles & fashion
·    Historic textiles
·    Technology transfer (IGF-ZIM projects)
·    Textile developments by start-ups
 

The Aachen-Dresden-Denkendorf International Textile Conference 2022 as face-to-face event takes place on-site in Aachen on December 1-2, 2022.

There is the opportunity to contribute to the conference program and submit an abstract for a talk or poster presentation. The Call for Abstracts for oral presentations ends on May 6, 2022. The Call for Abstracts for poster contributions is open until July 31, 2022.

The ADD-ITC is a conference for experts from the fields of
·    Textile chemistry, finishing & functionalization
·    Synthetic Fibers & Materials
·    Machinery, Processes & Composites

The conference program includes plenary lectures and themed sessions in the areas of
·    Sustainability in the textile industry
·    Future of textile production
·    Textiles for medicine and health
·    Smart textiles & fashion
·    Historic textiles
·    Technology transfer (IGF-ZIM projects)
·    Textile developments by start-ups
 

Further information about the conference program, plenary and keynote speakers as well as the call for abstracts are online availabel.

Source:

Aachen-Dresden-Denkendorf International Textile Conference

JUMBO-Textil: Innovative braiding technology. Innovative products (c) JUMBO-Textil
29.09.2021

JUMBO-Textil: Innovative braiding technology. Innovative products

  • JUMBO-Textil offers elastic high-tech braids – produced on high-tech systems

Developing narrow textile solutions for our customers – quickly, flexibly and precisely – that is our claim. For us and for our technology. Because first-class industrial solutions require first-class technology. Highly automated and digitally controlled. Technology like that found in our variation braider from Herzog – the high-performer among modern braiding machines. JUMBO-Textil is the first narrow textile manufacturer ever to produce elastic hole cords on the special system.

  • JUMBO-Textil offers elastic high-tech braids – produced on high-tech systems

Developing narrow textile solutions for our customers – quickly, flexibly and precisely – that is our claim. For us and for our technology. Because first-class industrial solutions require first-class technology. Highly automated and digitally controlled. Technology like that found in our variation braider from Herzog – the high-performer among modern braiding machines. JUMBO-Textil is the first narrow textile manufacturer ever to produce elastic hole cords on the special system.

High-performance system for extremely stable textile components
The special system combines sophisticated bobbin lace technology with digital control and thus enables the production of highly complex, individually specifiable braided structures. The variation braider's technology ensures an uninterrupted fibre course across all branches. This not only allows individual, idiosyncratic geometries, it also and above all helps with the stability of the components. This is because where other methods create branching points that are susceptible to breakage due to laser cutting, seams or knots, the variation braider simply braids through the branched strands. As the fibre course is not interrupted in braided branches, the resilience of the textiles is significantly increased. And individual braids are created for very different applications.

Bobbin lace technology for highly complex structures
Unlike in classical braiding systems, the impellers of the variation braider are arranged in a square. Up to eight different strands can be braided and interlaced with the textile all-rounder. All bobbins can be programmed separately and thus the bobbin lanes can be combined variably and individually. JUMBO-Textil also produces tubular braids with precisely defined braided openings, triaxial braids and highly complex preforms with the variation braider. The geometries of the narrow textiles range all the way to net structures. For braided cables, we create stable connections in the core-sheath braiding by weaving the core and the protective sheathing, which provides protection especially at the turns: there is no longer any undesired core and sheath slippage.

Individual braid architectures – for automotive, outdoor and more
Complex non-elastic cords from the variation braider have been in operation at JUMBO-Textil for a long time. For hole cords – or bifurcation cords (from the Latin: furca, the fork) – the bobbin points are individually programmed so that the arrangement and length of the branching precisely meet the requirements. It is used, among others, in the automotive sector, in the construction industry and in the outdoor sector to hang or unhang elements without using metal.

Elastic hole cord from the elastics specialist
The elastic hole braids by JUMBO-Textil are new on the market. "The variation braider offers us fantastic possibilities: we can pre-configure what we want to braid and are completely free to do so. The repeat is computer-controlled," explains Holger Vehring, Project Engineer at JUMBO-Textil. "A seamless braided cable harness tubular that organises the cable mess (for automotive), braided hoses with defined openings for conductive elements in smart textiles or rehab applications, as tensioning elements in backpacks or functional clothing – the possible applications are vast. Thanks to this technology, textile – i.e. lighter, quieter and more flexible – components can be used for numerous applications in which metallic materials were previously used due to the fragile branching points."