#Recycling / Circular Economy

2020-12-17

rPET pellets for BOPET film production

When two mechanical engineering technology leaders work together in order to fulfil specific customer requirements, unique recycling solutions are the result. The recycling of production waste in the manufacture of biaxially stretched flat films is already common practice, but film production becomes an application-specific challenge if post-consumer recyclate is also to be added to a BOPET film. EREMA and Lindauer DORNIER were able to fulfil this specific customer requirement by integrating components from both companies for the first time in a recycling line for a film manufacturer in Europe.

EREMA and DORNIER combine machine components to create an innovative recycling solution

They combined an INTAREMA 1512 TE recycling machine with a DORNIER melt filter for fine filtration. The compact INTAREMA® recycling system has proven its merits again and again over the years for the recycling of BOPET and BOPP waste in the manufacture of packaging film. The EREMA machine features a short single screw extruder and in the TE series is equipped with double degassing. The Lindauer DORNIER melt filter is an electric-heated filter that the manufacturer of weaving machines and specialty machines normally implements in the extrusion stage of its film stretching lines. The filter is designed individually for the required throughput of the customer and is suitable for 10 µm filtration grade.

Even when operated around the clock, a filter change is only necessary every four weeks. The integration of these two components reduces the load on the melt filters in the film stretching system during further processing of the recycled pellets, because the fine filtration of the rPET material has already been carried out during the recycling process. As a result, it increases the availability and production output of the film stretching line.

The customer that operates this recycling combination uses it to process washed PET bottle flakes that they buy-in. The flakes have a bulk density of 370 kg/m³ and measure between 0.6 and 8 mm. The 3 x 3 x 2 mm recycled pellets with a bulk density of 700 to 800 kg/m³ are part of the recipe for a biaxially stretched polyester film with a thickness of 23 and 30 µm for industrial applications. The main extrusion layer of this BOPET film is manufactured using a recycled pellet content of 30 percent. Additional clouding of the film cannot be detected as a result.

By investing in this recycling machine, the customer is now able to continuously monitor the processing of the bought-in PET bottle flakes themselves. This means that they have full control over the quality of the recycled pellets as well as in-house added value. "Our customers' customers increasingly specify plastic film with the highest possible proportion of recycled polyester. With the recycling machine especially configured by EREMA and DORNIER for this application, the recycled pellets are optimised to match the highest possible performance of the film stretching line," says Michael Stötzel, Head of Service at DORNIER. "Overall, the demand for higher proportions of rPET in film products is continuing to grow," confirms Andreas Dirnberger, Business Development Manager Application Inhouse & Industrial in the EREMA Group: "Film manufacturers are driven by the development of sustainable product concepts. The high quality rPET pellets that this customer now produces is the result of the ongoing technological development of the post-consumer material recycling process. This is only possible if the project partners work together efficiently towards the same goal." EREMA and DORNIER have been cooperating for many years on in-house recycling solutions for BOPET film manufacturers. "The fact that the teams involved in this project are already familiar with each other's product was certainly a decisive success factor for this customer's application," say Michael Stötzel and Andreas Dirnberger in agreement.

DORNIER celebrates its anniversary at ITMA Asia + CITME

To mark its 75th anniversary, machine and plant manufacturer Lindauer DORNIER will be presenting the latest developments in its rapier and air-jet weaving machines at ITMA Asia + CITME in Singapore (Hall 2, Stand B401) from 28 to 31 October 2025. The focus will be on energy-efficient weaving technologies, new IoT solutions for networked textile production and systems for the series production of modern fibre composite components.

From the Venus flytrap to foldable aircraft wings: Peter Dornier Foundation Prize 2025 honours bionic research on 3D weaving technology

Long wings with foldable tips have the potential to reduce aircraft fuel consumption and make aviation more sustainable. An interdisciplinary research team has now developed a new solution based on the Venus flytrap: Freely movable wingtips made of fibre composites which are produced using innovative 3D weaving technology. For this pioneering combination of textile technology, aviation and bionics, researchers Patrick Meyer (TU Braunschweig) and Michael Vorhof (TU Dresden) were awarded the Peter Dornier Foundation Prize 2025 in mid-July.

Pattern-controlled “pic-a-pic” setting of rapier release timing on right-hand side

DORNIER PIRO enables the operator to set the timing of the rapier release on the right-hand side of the machine “pic-a-pic” and pattern-controlled. For applications with weft yarns of different fineness or elasticity, the optimum timing can be set for each weft channel. This offers great potential for reducing weft waste on the right-hand side.

Marzoli unveals its new textile ecosystem at ITMA ASIA + CITME 2025 at Singapore

With the claim “Designed to Impact”, Marzoli showcases its evolution into a complete engineering company for the textile industry. By combining advanced machinery, digital intelligence, science of materials and innovative services, the company enables textile manufacturers unlock new business opportunities, and accelerate their path to innovation and differentiation.

textile.4U publishes special edition “Top 100 Textile Recycling Companies 2025”

With a comprehensive 176-page special edition, textile.4U is dedicating its latest issue entirely to one of the most dynamic and influential topics in today’s textile industry: textile recycling. The new issue, published exclusively in high-quality print, presents the Top 100 textile recycling companies researched and selected by TexData – organizations that already play a key role in the transition to circular textiles or are expected to have a significant impact in the near future.

Compact, powerful, cost-efficient – KARL MAYER launches its HKS 2-SE TWO

KARL MAYER is launching a new two-bar tricot machine for the elastic sector at ITMA ASIA + CITME 2025. This newcomer is called HKS 2-SE TWO, stands for double customer benefits, and offers even more advantages than the predecessor model. With this innovation, the leading textile machinery company is once again asserting its top position in the market.

VDMA members at ITMA ASIA + CITME in Singapore

With 69 exhibiting member companies, ITMA ASIA + CITME 2025 is once again marked by a strong presence of VDMA companies. Altogether 82 companies from Germany will exhibit at the show, covering about 3,500 square meters of exhibition space, topped only by China and Italy. VDMA initiated a German Pavilion with two group stands (spinning in hall 4 and finishing in hall 7) with a total of 30 exhibitors.

KARL MAYER is launching two machines that set new standards in performance and cost-effectiveness

At this year's ITMA ASIA + CITME, KARL MAYER is exhibiting two advanced developments in the field of tricot machines. Both newcomers expand the portfolio with highly practical solutions for increased efficiency and cost-effective production – making the exhibition booth once again a focal point for more than just the warp knitting industry.

Uster presents novelties at ITMA Asia + CITME 2025

There’s news from Uster Technologies to be announced for the industry’s upcoming event in Singapore. The Uster 360Q universe is growing with new products, solutions and services. Innovation developments can also be recorded in the fields of man-made fiber testing and fabric inspection. Uster innovations address the industry’s trending topics as mill management and process control, optimization of delivered fabric quality and yield.