German manufacturers of sports textiles are among the most innovative companies in the textile industry. Researchers at the Hohenstein Institute in Bönnigheim are helping these companies to improve the functional properties of their textiles by developing practical construction guidelines.
One of the ways of assessing the comfort characteristics of sportswear and other textiles at the Hohenstein Institute is by using the thermo-regulatory articulated manikin Charlie.
The physiological comfort characteristics of sports textiles can be represented using the German school marks system from 1 (= \"very good\") to 6 (= \"unsatisfactory\").
In a recently completed research project: (AiF No. 15481 N), with funding from the Federal Ministry of Economics and Technology (BMWi) provided through the Federation of Industrial Research Associations (AIF), they drew specific conclusions about the physiological comfort characteristics of a variety of different types of knitted garments. The textile industry will be able to use the construction guidelines that resulted from the research work to continue developing and optimising functional clothing for all kinds of different sports.
The research project entailed investigating a total of 34 assorted knitted fabrics in respect of their thermo-physiological characteristics. These samples varied in terms of their fibres (PES, PP, PA, WO and CO and some mixed fibres), weight per unit area (100 to 329g), surface finish (hydrophilic, bioactive) and knit structure(e.g. single-jersey or pique). Specially selected representative samples were tested in controlled trials involving volunteers wearing them in a climate-controlled room. The skin model was used to measure thermo-physiological properties, i.e. how heat and moisture are transported through the textile. When this data was combined with the results of skin sensory testing, it was possible to work out a comfort rating for each sample. The textiles were assessed along the lines of the German school marks system, from 1 = "very good" to 6 = "unsatisfactory".
On average, all the knitted sports textiles that were investigated received marks that were satisfactory or better for sports textile comfort (TK(S)). Nine samples were awarded marks of 1.0 to 1.5 (= "very good"). Chemical fibres were at a distinct advantage when it came to transporting liquid perspiration and the way they dried. On the other hand, the natural fibre samples made of wool and cotton had the edge when it came to retaining perspiration. Comparing pairs of samples of textiles where the main fibre was polyamide, but with and without a hydrophilic finish, showed that the hydrophilic finish had a negative effect on the level of comfort, because the fabric took longer to dry. However, applying a hydrophilic finish to samples made of propylene or a mixture of cotton and polypropylene gave a better result for comfort because they did not stick to the skin so much.Contact:
We must also thank all members of the project support committee who, with their specialist expertise and willingness to contribute to the discussions, helped ensure a successful conclusion to the project.
Rose-Marie Riedl | idw
Flying: Efficiency thanks to Lightweight Air Nozzles
23.10.2017 | Technische Universität Chemnitz
Strange but true: Turning a material upside down can sometimes make it softer
20.10.2017 | Universitat Autonoma de Barcelona
Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
23.10.2017 | Event News
17.10.2017 | Event News
10.10.2017 | Event News
23.10.2017 | Life Sciences
23.10.2017 | Physics and Astronomy
23.10.2017 | Health and Medicine