Textination Newsline

The professional rental service for linen and workwear is a textbook example of a circular, sustainable business model, which uses hard-wearing textiles instead of lower-quality or disposable products (reduce), optimises their useful life through professional care / repairs (reuse) and develops solutions to re-purpose them after they have reached the end of their useful life (recycle).

With its ‘Green Deal’, the European Commission has, inter alia, initiated the transformation of the garment-manufacturing industry from a business model of short-lived consumption to a more sustainable, circular system. By 2030, fast fashion will be replaced increasingly by textile products that have a longer life cycle and thus contribute to reducing environmental pollution. To achieve this goal, textiles must be more durable, reusable, repairable, fibre-to-fibre recyclable and have a greater proportion of recycled fibres. For the textile-service sector, the circularity requirements defined in Brussels have long been standard practice because hiring out professional workwear and protective clothing, as well as hotel and hospital linen, mop covers and other items, requires precisely these characteristics, i.e., the fabrics must be durable, washable – and therefore reusable – and easy to repair. Thanks to these qualities, rental linen can remain in the service cycle for a long time and has thus become established as a sustainable alternative to outright purchasing.

Laundry in the circular system
The textile-rental service offers a variety of systems tailored to the needs of different groups of customers. Workwear and protective clothing is stocked by textile-service laundries in a wide range of sizes, so that each customer's employees can be supplied with a suitable outfit. This is then labelled and made available to the individual wearer. If the employee leaves the customer's employ, the garments are taken back and – provided they are in good condition – reused as replacement clothing. In the case of workwear in the healthcare sector, as well as bed linen, table linen and towelling, a pool solution is more common. A laundry pool comprises similar textiles that are supplied without being assigned to a specific customer or wearer, which significantly reduces the quantity of textiles used.

Local textile cleaning is another major area of commercial textile care that also helps extend the life of textiles with a wide range of goods being professionally processed on behalf of private and commercial customers by such businesses. High-quality outerwear and underwear, premium home textiles, delicate down jackets or heavily soiled workwear are all restored to a clean, fresh and usable condition. And if stains prove particularly stubborn even after cleaning, a specialist company can re-colour the goods, thus ensuring they can be reused.

The recycling benefits of textile rental services
Besides the two main requirements of ‘reuse’ and ‘repair’, the sector is also working hard on the recycling of old textiles, as called for by the EU textile strategy. Several workwear manufacturers have developed their own returns models, whereby customers can hand back their old workwear when buying new items. The old workwear is then reused or recycled by partner organisations. Large companies, including Deutsche Telekom and Ikea, have also introduced a centralised returns and recycling system for discarded workwear. Indeed, the furniture giant has even created its own home textiles line using old workwear. However, the easiest way to implement a system of this kind is to use a rental service, as the goods are always returned to the specialist company and sorted there. In other words, the used laundry is collected in one place after washing, where it forms a large volume of similar discarded textiles, which greatly simplifies both the collection logistics and the recycling process. These favourable conditions have already led to the establishment of an initial initiative in which several textile service companies pool their waste hotel linen and channel it into industrial cotton-to-pulp recycling. Whether individual or joint initiatives, this is a testament to the industry's commitment to the development of solutions for ‘waste materials’.

Textile upcycling for designer items
Solutions for rejected textiles are more varied than simply recycling them. For example, Sweden's Fristads company offers a repair service for its workwear. The British department store chain John Lewis goes one step further. In a field trial, customers can hand in their garments to selected stores for cleaning and repair. The garments are processed by Johnsons, a laundry and dry-cleaning chain belonging to the Timpson Group. Designers have also recognised second-life opportunities for discarded workwear and contract textiles. For example, they apply elaborate decorations to items from their collections or take them apart and reassemble them. The creatively enhanced goods are then returned to the market as designer items. There are also recycling solutions for large contract textiles, which are converted into bags or cosmetic accessories or, after a colour-changing process, into small batches of aprons. However, the effect of such concepts on reducing textile waste is as small as their diversity. Only the established second-hand model is able to return larger quantities to the economic cycle.

The pros and cons of recycled materials
While the textile-care industry is unanimous in its support for the requirements of the EU textile strategy and is contributing solutions, it disagrees on increasing the proportion of recycled fibres in its products. Although there are already numerous workwear collections and hotel-linen ranges that meet the requirements from Brussels, some of the products do not, however, meet the durability requirements because the fibre quality deteriorates with each recycling stage. Therefore, many contract-textile manufacturers still rely exclusively on virgin, brand-new fibre materials to ensure durability in industrial laundering. Texcare International offers the industry the perfect setting to discuss this conflict of objectives in depth.

Imagine a coat that captures solar energy to keep you cozy on a chilly winter walk, or a shirt that can monitor your heart rate and temperature. Picture clothing athletes can wear to track their performance without the need for bulky battery packs.

University of Waterloo researchers have developed a smart fabric with these remarkable capabilities. The fabric has the potential for energy harvesting, health monitoring and movement tracking applications.

The new fabric can convert body heat and solar energy into electricity, potentially enabling continuous operation with no need for an external power source. Different sensors monitoring temperature, stress and more can be integrated into the material.

It can detect temperature changes and a range of other sensors to monitor pressure, chemical composition and more. One promising application is smart face masks that can track breath temperature and rate and detect chemicals in breath to help identify viruses, lung cancer and other conditions.

“We have developed a fabric material with multifunctional sensing capabilities and self-powering potential,” said Yuning Li, a professor in the Department of Chemical Engineering. “This innovation brings us closer to practical applications for smart fabrics.”

Unlike current wearable devices that often depend on external power sources or frequent recharging, this breakthrough research has created a novel fabric which is more stable, durable, and cost-effective than other fabrics on the market.

This research, conducted in collaboration with Professor Chaoxia Wang and PhD student Jun Peng from the College of Textile Science and Engineering at Jiangnan University, showcases the potential of integrating advanced materials such as MXene and conductive polymers with cutting-edge textile technologies to advance smart fabrics for wearable technology.

Li, director of Waterloo’s Printable Electronic Materials Lab, highlighted the significance of this advancement, which is the latest in the university’s suite of technologies disrupting health boundaries.

“AI technology is evolving rapidly, offering sophisticated signal analysis for health monitoring, food and pharmaceutical storage, environmental monitoring, and more. However, this progress relies on extensive data collection, which conventional sensors, often bulky, heavy, and costly, cannot meet,” Li said. “Printed sensors, including those embedded in smart fabrics, are ideal for continuous data collection and monitoring. This new smart fabric is a step forward in making these applications practical.”

The next phase of research will focus on further enhancing the fabric’s performance and integrating it with electronic components in collaboration with electrical and computer engineers. Future developments may include a smartphone app to track and transmit data from the fabric to healthcare professionals, enabling real-time, non-invasive health monitoring and everyday use.

The study is published in the Journal of Materials Science & Technology.

• 82 per cent of shoppers are against the destroying of returns
• 67 per cent of under-30s accept higher prices for climate-neutral shipping

The digital shopping basket remains popular in Germany: around three in ten purchases are made online, ex-actly as many as in 2020. 27 per cent of respondents buy at least half of their goods and services online. Sustainability plays an important role here: around three quarters (77 per cent) of shoppers prefer suppliers that offer moderate and sustainable packaging and buy from them online. 43 per cent make sure when shopping that they only choose products that they are unlikely to have to return. And 82 per cent support the idea that returns should not be cancelled. These are the results of the representative ‘Postbank Digital Study 2024’.

According to the study, younger people are significantly more open to e-commerce than their elders: Digital natives (under 40 years of age) order 40 per cent of their goods online - 13 percentage points more than digital immigrants (over 40 years of age). The reasons for online shopping also vary greatly between young and old. While the convenient access to home for online shoppers remains the main reason for online shopping in all age groups, the proportion of young people at 52 per cent is significantly lower than the average (62 per cent).

For younger online shoppers, immediate availability (38 per cent) and the option to shop on the go via app (30 per cent) are particularly important. In comparison, only 22 per cent of older users have used apps for shopping to date. Favourable prices are estimated by 56 percent of older online shoppers, while this is important for only 46 percent of younger shoppers. There is a further difference in terms of flexible opening hours: 53 per cent of those aged 40 and over value the ability to shop at any time, compared to 40 per cent of online shoppers under 40.

‘We are facing similar challenges in the digitalisa-tion of our banking services,’ says Thomas Brosch, Head of Digital Sales at Postbank. ‘The needs of the generations differ. We have to constantly optimise our services and the user-friendliness of our offerings - in online banking, on smartphones and in physical branches. In this way, we can make good offers to young and old customers alike.’

Online shopping yes, but please without regrets
18 to 39-year-olds are much more willing to dig deeper into their pockets for sustainability than those aged 40 and over. For example, younger online shoppers pay more attention to CO2 offsetting and are more willing than average to make a voluntary compensation payment: 26 per cent prefer to order from shops where a donation can be made to compensate for the CO2 produced. In contrast, only 11 per cent of older people do so. Two out of three younger Germans also accept higher product prices for sustainable shipping, while not even one in two (46 per cent) of those aged 40 and over are inclined to do so.

70 per cent of digital natives already have experience with in-app purchases
The study also reveals another trend: around four out of ten Germans have already made in-app purchases. And 70 per cent of digital natives already have experience of buying additional content or functions in mobile applications. Those aged 40 and over are much more reluctant: only 29 per cent have already made in-app purchases at least once, and 43 per cent have no plans to do so. Digital natives are not only interested in a good price-performance ratio for in-app purchases, but also in adequate protection against unwanted spending. A quarter of this age group would like this, compared to just 18 per cent of older people.

Younger shoppers are more likely to use banking services when shopping online
When it comes to paying, six out of ten digital natives have already accepted instalment payments or credit offers when shopping online. In addition to favourable conditions (36%) and a reputable payment service provider (35%), it is particularly important to young shoppers that banking services are easy to use (35%). Across all age groups, 89 per cent of Germans have already used such banking services.

Background information on the Postbank Digital Study 2024
For the ‘Postbank Digital Study 2024 - The Digital Germans’, 3,171 residents were surveyed in April of this year. For the tenth year in a row, Postbank is using the study to investigate which developments are emerging in various areas of life with regard to digitalisation in general and financial topics in particular. In order to depict a population-representative structure, the sample was weighted according to federal state (proportionalisation), age and gender. The 2021 census of the Federal Statistical Office was used as the reference file. The results are rounded to whole numbers. Deviations in the totals can be explained by rounding differences.

Researchers engineered a hair-thin fabric to create a lightweight, compact, and efficient mechanism to reduce noise transmission in a large room.

We are living in a very noisy world. From the hum of traffic outside your window to the next-door neighbor’s blaring TV to sounds from a co-worker’s cubicle, unwanted noise remains a resounding problem.

To cut through the din, an interdisciplinary collaboration of researchers from MIT and elsewhere developed a sound-suppressing silk fabric that could be used to create quiet spaces.

The fabric, which is barely thicker than a human hair, contains a special fiber that vibrates when a voltage is applied to it. The researchers leveraged those vibrations to suppress sound in two different ways.

In one, the vibrating fabric generates sound waves that interfere with an unwanted noise to cancel it out, similar to noise-canceling headphones, which work well in a small space like your ears but do not work in large enclosures like rooms or planes.

In the other, more surprising technique, the fabric is held still to suppress vibrations that are key to the transmission of sound. This prevents noise from being transmitted through the fabric and quiets the volume beyond. This second approach allows for noise reduction in much larger spaces like rooms or cars.

By using common materials like silk, canvas, and muslin, the researchers created noise-suppressing fabrics which would be practical to implement in real-world spaces. For instance, one could use such a fabric to make dividers in open workspaces or thin fabric walls that prevent sound from getting through.

The fabric can suppress sound by generating sound waves that interfere with an unwanted noise to cancel it out (as seen in figure C) or by being held still to suppress vibrations that are key to the transmission of sound (as seen in figure D).

“Noise is a lot easier to create than quiet. In fact, to keep noise out we dedicate a lot of space to thick walls. [First author] Grace’s work provides a new mechanism for creating quiet spaces with a thin sheet of fabric,” says Yoel Fink, a professor in the departments of Materials Science and Engineering and Electrical Engineering and Computer Science, a Research Laboratory of Electronics principal investigator, and senior author of a paper on the fabric.

Silky silence
The sound-suppressing silk builds off the group’s prior work to create fabric microphones.

In that research, they sewed a single strand of piezoelectric fiber into fabric. Piezoelectric materials produce an electrical signal when squeezed or bent. When a nearby noise causes the fabric to vibrate, the piezoelectric fiber converts those vibrations into an electrical signal, which can capture the sound.

In the new work, the researchers flipped that idea to create a fabric loudspeaker that can be used to cancel out soundwaves.

“While we can use fabric to create sound, there is already so much noise in our world. We thought creating silence could be even more valuable,” Yang says.

Applying an electrical signal to the piezoelectric fiber causes it to vibrate, which generates sound. The researchers demonstrated this by playing Bach’s “Air” using a 130-micrometer sheet of silk mounted on a circular frame.

To enable direct sound suppression, the researchers use a silk fabric loudspeaker to emit sound waves that destructively interfere with unwanted sound waves. They control the vibrations of the piezoelectric fiber so that sound waves emitted by the fabric are opposite of unwanted sound waves that strike the fabric, which can cancel out the noise.

However, this technique is only effective over a small area. So, the researchers built off this idea to develop a technique that uses fabric vibrations to suppress sound in much larger areas, like a bedroom.

Let’s say your next-door neighbors are playing foosball in the middle of the night. You hear noise in your bedroom because the sound in their apartment causes your shared wall to vibrate, which forms sound waves on your side.

To suppress that sound, the researchers could place the silk fabric onto your side of the shared wall, controlling the vibrations in the fiber to force the fabric to remain still. This vibration-mediated suppression prevents sound from being transmitted through the fabric.

“If we can control those vibrations and stop them from happening, we can stop the noise that is generated, as well,” Yang says.

A mirror for sound
Surprisingly, the researchers found that holding the fabric still causes sound to be reflected by the fabric, resulting in a thin piece of silk that reflects sound like a mirror does with light.

Their experiments also revealed that both the mechanical properties of a fabric and the size of its pores affect the efficiency of sound generation. While silk and muslin have similar mechanical properties, the smaller pore sizes of silk make it a better fabric loudspeaker.

But the effective pore size also depends on the frequency of sound waves. If the frequency is low enough, even a fabric with relatively large pores could function effectively, Yang says.

When they tested the silk fabric in direct suppression mode, the researchers found that it could significantly reduce the volume of sounds up to 65 decibels (about as loud as enthusiastic human conversation). In vibration-mediated suppression mode, the fabric could reduce sound transmission up to 75 percent.

These results were only possible due to a robust group of collaborators, Fink says. Graduate students at the Rhode Island School of Design helped the researchers understand the details of constructing fabrics; scientists at the University of Wisconsin at Madison conducted simulations; researchers at Case Western Reserve University characterized materials; and chemical engineers in the Smith Group at MIT used their expertise in gas membrane separation to measure airflow through the fabric.

Moving forward, the researchers want to explore the use of their fabric to block sound of multiple frequencies. This would likely require complex signal processing and additional electronics.

In addition, they want to further study the architecture of the fabric to see how changing things like the number of piezoelectric fibers, the direction in which they are sewn, or the applied voltages could improve performance.

“There are a lot of knobs we can turn to make this sound-suppressing fabric really effective. We want to get people thinking about controlling structural vibrations to suppress sound. This is just the beginning,” says Yang.

This work is funded, in part, by the National Science Foundation (NSF), the Army Research Office (ARO), the Defense Threat Reduction Agency (DTRA), and the Wisconsin Alumni Research Foundation.