From the Sector

The Chairman of the Walter Reiners-Stiftung foundation of the VDMA Textile Machinery Association, Peter D. Dornier has awarded prizes to three successful young engineers. The award-winning works provide practical solutions on the topic of circular economy. For example, the recycling of carbon fibres, which are used to produce lightweight components for the automotive industry. Or the environmentally friendly production of yarns from crab shells. Another topic was medical applications: The processing of ultra-fine yarns into stents for aortic repair. The award ceremony took place online on 9 November as part of the Aachen-Dresden-Denkendorf International Textile Conference.  

With a creativity prize, endowed with 3,000 euros, the foundation honoured the diploma thesis of Irina Kuznik, TU Dresden. She used a creative approach to realise solutions for processing chitosan into fibre yarn.

Mr Kai-Chieh Kuo was awarded the diploma/master's thesis promotion prize of 3,500 euros. With his master's thesis, which was written at RWTH Aachen University, Mr Kuo contributes to the production of vital components used in medicine. The stents made of ultra-fine yarns are made possible by an innovative modification of the classic tube weaving process.

The Walter Reiners Foundation rewarded the doctoral thesis of Dr. Martin Hengstermann with the promotional prize in the dissertation category, endowed with 5,000 euros. The thesis deals with the production of recycled carbon fibres. These can be used to produce lightweight components for motor vehicle and aircraft construction or the wind energy sector.

New Prize Sustainability / Circular Economy
The environmental conditions of the textile industry and machine construction are changing. Topics such as climate protection and the circular economy are becoming central. From this perspective, the board of the Walter Reiners Foundation has decided to further develop the foundation's prize system.

In 2022, the foundation will for the first time offer a prize with a focus on design / sustainability. Peter D. Dornier, Chairman of the Foundation, explained: "Already in the design phase, one can set the parameters so that a textile product can be reintroduced after use into the economic cycle for a high-quality application. For example, through the appropriate use of materials and finishing. We are looking for solutions for resource-saving design, technology and manufacturing processes."   

• Circularity at the centre

PG DENIM, the designer project by Paolo Gnutti, is ready for several important events scheduled for the autumn with ground-breaking interpretations and a new – increasingly green – business model. The occasion is its participation in the Blue Zone at Munich Fabric Start (Munich, 3-5 September 2019), a space which is increasingly often reserved for companies and projects with a high innovation rate in the world of denim.

PG DENIM at the German exhibition will be presenting important product innovations, but most notably new concepts developed for the S/S 2021 season. The focus here is on circularity, seen from a dual perspective: the product with the no longer traditional alternation of seasons, and a sustainabilityoriented approach.

Seasons meet

The new PG DENIM approach is geared towards overlapping seasonality, with less and less marked separations between projects dedicated to the spring-summer and fall-winter lines. The collections by PG DENIM can thus be increasingly defined as a “mix of products without seasonality”. Its focal points are innovation alongside the concept behind the initial idea, as opposed to just the season. This trend, explains Paolo Gnutti, CEO and R&D Head at PG DENIM, is also due to registering the fact that seasonality – in terms of environment and trends – is changing at an increasingly rapid pace. As a response to this situation, the choice has been made to design new collections starting from macro-trends and presenting fabrics for garments which are “easy to wear”, suitable for both warm and cold temperatures, in a true melting pot  of weights and sizes.

The lines for the previous season are thus reintroduced and restyled playing with weights and sizes, within a range where flock meets ultra-light fabric bases, or where vinyl is combined with typically summer weights which shift the fabric towards the world of “paper” with crispy touches, resulting in extraordinarily lightweight and strong items at the same time. Also the GARAGE DENIM has been upgraded with fluid and smoothed touched for garments which are easy to wear and have a strong personality.

Partnership with The Denim Window

The PG DENIM season is also enhanced by its partnership in The Denim Window project, which has resulted in a limited series of Creative Capsule Collections, derived from the idea of bringing together companies which had already worked or were working together, trying to highlight – through small capsule collections – the best of what had already been produced by traditional businesses. This has resulted  in three trailblazing capsules, two of which designed in partnership by PG DENIM and companies the likes of M&J Group, Cadica and Greenwear. Several copies of these collections have been made to travel the world, and – after the official presentation in July – they will have a special corner, The Denim Window, in the Bluezone at Munich Fabric Start.

The “Circular Programme” and the five “Rs” of sustainability

Also the PG DENIM approach to accountability in production processes has been enhanced by implementing the “Circular Programme”. As part of our corporate vision, Italian-style production is combined with compliance with what have become known as “the five Rs”, that is to say key concepts underlying the design and manufacturing model: Reduce (everything you are not using), Repair (everything you can), Reuse (anything available to you), Recycle (all that is left), Respect (everything around you).

This is the philosophy underlying each individual process at PG DENIM, and leading to new specific programmes which have been its business focus over the past few months:

1) Reducing the environmental impact during the fabric dyeing phase in reaction and sulphurbased processes, where the use of chemicals has been reduced by 40%, water consumption by 50% and CO2 emissions by 60%, which has also resulted in better penetration and a better result in the crocking process. This has led to producing 10 new articles which will be launched on the market.

2) Recycling all waste from processing and after use, creating a range of garments where cotton is actually obtained from regenerating these two kinds of waste. In this regard, PG DENIM for now is the only company on the market able to process with a percentage of recycled product exceeding 60% of the total, whereas the average for this kind of manufacturing is generally about 35%.

As regards regular production, on the other hand, PG DENIM follows stringent international standards, including Dtox, Reach and Gots in all its processing phases, also using BCI cottons and the Organic Cotton Standard for raw materials. Last but not least, it was recently awarded the GRS (Global Recycled Standard) certification.

Image processing system allows cost savings of more than 2,000 euros per year and weaving machine

MSc Marco Saggiomo from the Institut für Textiltechnik (ITA) and graduate engineer Marcin Kopaczka from the Institute of Imaging & Computer Vision of RWTH Aachen University (LfB) developed an image processing system for weaving machines that provides comprehensive benefits for woven fabric producers. The image processing system enables the weaving machine to detect faulty pickings autonomously. The application of the image processing system leads to cost savings of at least 2,210 euros per year for each weaving machine in comparison to manual faulty picking repairs.

The researchers won the “Best Student Paper Award” within the framework of the 7th International Conference on Pattern Recognition Applications and Methods (ICPRAM) for their joint paper on “Fully Automatic Faulty Weft Thread Detection using a Camera System and Feature-based Pattern Recognition”. The award confirms the success of the co-operation of both institutes, ITA and LfB, which will be continued in future research projects.

The image processing system is part of the doctoral thesis of Marco Saggiomo. Marcin Kopaczka supported ITA with the development of the image processing algorithm.
The joint paper is based on the successfully concluded project WeftAlert within the framework of the German Federation of Industrial Research Associations. Further results of the WeftAlert project include the extension of the state of the art of image-based process optimisation of air-jet weaving, excellent outcomes in image processing as well as the validation of image processing systems in laboratory and industrial environments.