Twin-screw extruders enable even contaminated post-consumer polystyrene to be depolymerized continuously and efficiently. This opens up a promising recycling route in terms of industrial implementation via renewed polymer synthesis to produce plastic granules with a quality approaching that of virgin material.

Continuous process in a twin-screw extruder: For industrial implementation of chemical recycling of polystyrene, a reactor technology is required that allows high throughput rates and also processes heavily contaminated post-consumer material continuously with high process stability

A Robust Continuous Process for the Chemical Recycling of Polystyrene

Extrusion

Kunststoffverarbeitung: Verfahren

Polystyrol

Kunststoff Werkstoffe

Thermoplaste

Extrusionsanlagen

Kunststoffverarbeitung: Maschinen und Komponenten

Kunststoff-Recycling

Kunststoff-Aufbereitung

Turning Old into New

The simple replacement of petroleum-based components with renewable alternatives in a well-established reactive extrusion process is a promising route to more environmentally friendly thermoplastic polyurethane elastomers (TPU). However, this requires a comprehensive understanding of the interactions between chemical reactions and material flow within an extruder, as well as a thorough understanding of the effects of heat and shear on polymerization and melt processing.

Extruded strand from the continuous synthesis of a thermoplastic polyurethane, containing the new paraformaldehyde-based polyol

Production of Thermoplastic Polyurethanes with Reduced Carbon Footprint

Thermoplastische Elastomere

Extruder

Polyurethan

Reactive Extrusion of TPU

Continuous Compression Molding (CCM) technology can be applied to multilayer solutions and is referred to as Continuous Compression Molding Multilayer (CCMM). In addition to the usual benefits of CCM it offers further advantages over competing technologies. In packaging applications, compression technology makes it possible to use minimal quantities of barrier material, thus combining excellent performance with low raw material costs.

EVOH distribution in a compression-molded multilayer capsule produced by CCMM: 1) complete distribution over cross-sectioned capsule, 2) enlargement of two zones (bottom and wall) of the capsule

16:9

Continuous Compression Molding Multilayer of Coffee Capsules

Warmformen / Thermoformen

Pressen von Kunststoffen

Co-Injektion (Barriere-/Sandwich-Spritzgießen)

Spritzgießen

Paying Attention to Layers in-between

In order to avoid bubble ruptures during the production of blown film, the velocity of the cooling air is often reduced. The use of air guiding systems (AGS) can prevent such bubble instability. A novel AGS was developed at IKV in Aachen, Germany, using iris diaphragms in order to increase the cooling efficiency of blown film extrusion and thus improve the productivity of an existing plant

Flexible air guiding system in blown film allows higher mass throughputs and greater process stability

Increase in Mass Throughput and Improved Mechanical Product Properties

Blasfolienextrusion

Nachhaltigkeit

Umweltmanagement

Kühlanlagen

Konturnahe Kühlung

Energieeffizienz

Extrusions-Zubehör

Flexible Guiding Systems  for Cooling Air

For the Institute of Plastics Processing (IKV) at the RWTH Aachen University, Germany, 2020 is an anniversary year in three different ways. The RWTH Aachen University is celebrating its 150th anniversary, and is marking the occasion, by hosting the International Colloquium of Plastics Technology for the 30th time – with special feature on the previous day. A preview of the celebrations.

Institute Director Professor Christian Hopmann expects 800 participants to attend the 30th International Colloquium of Plastics Technology

A Varied Menu

Doriat, Clemens, Dr.

Temperiertechnik

Künstliche Intelligenz für die Qualitätssicherung

Industrie 4.0

Industrie 4.0 für die Qualitätssicherung

Extrusionswerkzeuge

Werkzeuge für die Kunststoffverarbeitung

Additive Fertigung

Reason to Celebrate 30th International Colloquium of Plastics Technology and  70 Years of the IKV

Manufacturers of standard extruders sometimes incorporate oversized drives into their machine designs in order to be able to cover a wide range of requirements. In times of high energy prices, however, this is no longer economical. An extruder should be equipped with a drive package that is matched to the gearbox and the processing unit. But what are the requirements governing the design of the drive system?

Drives on the test bench: this type of motor test bench is used by Veka to collect experience about the operation of some 700 twin-screw extruders and 300 single-screw extruders used in production facilities worldwide at the most favorable operating point

Process-Oriented Design of the Main Drive for the Extruder

Elektrische Antriebe

Antriebe

PVC-Profile

Halbzeuge und Zwischenprodukte

Kunststoff-Halbzeuge

Flachfolien- und Plattenextrusion

Rohr- und Profilextrusion

Ingenieurwissenschaften

Elektrotechnik

Energy-Efficient Use of Drives

New polymer composites for the production of multi-layer small tubes are being developed to give products specific functions. With suitable co-extrusion dies and a thermal barrier option, even complex layer composites with melt temperature differences of more than 50 °C can be processed reliably and in high quality.

CV-T 5-layer co-extrusion die in pilot plant operation: tubes with small cross-sections that fulfill a multitude of demands can be produced by  co-extrusion

Combining Polymers with Very Different Processing Temperatures

Temperiergeräte

Gießanlagen

Baugewerbe (Hoch- und Tiefbau)

Medizintechnik (KU)

Kunststoffverarbeitung

Bautechnik, Sanitär

Extruder-Folgeeinrichtungen

Automotive

Fahrzeugbau

Co-Extrusion with Thermal Control

In the area of pipe and profile extrusion, the focus remains on increasing efficiency. In addition to energy-saving systems, the focus on efficiency increasingly includes flexibilization of plants and processes, as well as reproducibility of quality in production.

Optimization of Components and Expansion of Plant Control Systems Offer Potential  for Improvement

Kreislaufwirtschaft

Efficiency Remains the Order of the Day

Enhancing mixed bottle flakes by turning them into extrudable recycled crystalline polyethylene terephthalate (rCPET) was the goal of a joint development project looking to close the gap in the PET recycling system. By successfully producing a sheet made from recycled material suitable for high-quality applications such as thermoformed food trays, Gneuss, Sukano and Illig have demonstrated that this approach is indeed possible.

Thermally stable rCPET food trays made from multicolor APET bottle flakes

Upcycling of Mixed APET Bottle Flakes into Thermally Stable rCPET Food Trays

Polybutylenterephthalat

Farbstoffe und Pigmente

Additive

Schmelzefilter

Anlagen Lebensmittel

Anlagen für die Additive Fertigung

Anlagen Additive Fertigung / 3D-Druck, andere

Filteranlagen

Farbstoffe

Flakes

Kunststoff-Rezyklat

PET: From A to C

The specialist´s in plastics extrusion focus at the show will be on sustainable packaging solutions for a functioning circular economy.

Sustainable solution for flexible packaging: Reifenhäuser All-PE Pouch.

Verbände, Institutionen, Messen

Dienstleistungen

Reifenhäuser Presents Sustainable Packaging Solutions

Beumer Group packs a wide variety of goods using its stretch hood lines and films that are often custom-made. Safely and economically.

Stretch hood lines are initially more expensive than stretch wrapping lines. However, they offer an advantage for many tasks

Kunststoff-Verpackungsmaschine

Sondermaschinen

Schneid- und Wickelmaschinen für Folien

Folien

Special Requirements of Jam and Roof Tiles

Pregis invests USD 80 million in a new film extrusion facility in South Carolina.

The blown film extrusion facility in Anderson, SC/USA, will create 120 new jobs and is expected to be operational in September

Extrusionsblasformen

Blasformen

Film Extrusion Facility Will Create New Jobs

Before the direct extrusion of profiles made of polyvinyl chloride was developed, it was previously necessary to produce a dry blend. This process is expensive and energy-intensive and, in contrast to direct extrusion, discontinuous. The direct extrusion of PVC using planetary roller extruders promises an improvement. In addition to soft PVC, rigid PVC can also be processed in this way with a few adjustments.

The direct extrusion of PVC profiles on planetary roller extruders can save costs and energy and simplify the process

Extrusion of Rigid PVC without Dry Blend Production

Kunststoff-Profile

Granulat, PVC- (Compound)

Andere Werkstoffe

Werkstoffe für additive Verfahren

Polyvinylchlorid

Kunststoff

Bauwesen

Baustoffe

Direct Route to the PVC Profile

Over 60 customers took part at the Colines Open House 2021 and the presentation of the new Polyblown 2600 mm 7-layer multipurpose blown film line.

Over 60 customers took part at the presentation of the new Polyblown blown film line.

Open House at Colines

With a newly developed process from Entex it was possible to compound an injection grade compound of PLA with a 50 % wood flour content.

The PLA compound with 50 % wood flour content was successfully produced on Entex’s planetary roller extruder

Compounding PLA Formulations with a 50 % Wood Flour Content, without Premixing

Compound

Biokunststoffe

Compoundieren

Direct to Highly Filled Bioplastics

NGA Group Opens Production Facility in India

The NGA Group founded NGA Plastic Technology Private Limited in Chennai.

The NGA Group recognized the great market potential as well as the need of the Indian industry of latest leading-edge technology at affordable prices and founded NGA Plastic Technology Private Limited in Chennai.

“India is the fastest growing market for the polymer industry, especially for the topics masterbatch, compounding and blown and cast film production. It is a fact that local plastic processing companies upgrade their production infrastructures with technologies, which correspond to global standards “, explain DI Dr. Friedrich Kastner and Corné Verstraten, the majority shareholders of the NGA Group.

The Austrian NGA GmbH holds 70 % of the Indian company, 30 % are held by Techscience Service Pvt Ltd, an Indian company, which, as distributor, has been working together with Collin Lab & Pilot Solutions GmbH for more than 30 years.

Main target of the new company is to provide growing markets with easy-to-handle test and R&D lines in laboratory scale – based on the Collin technology, manufactured in India under the brand name “Collin Asia”.

The first series of machines will be introduced under the sub-brand Easy Line: table-top machines that are designed for the processing of polymers, for apprenticeship, research and development and include presses, extruders, compounders, blown as well as flat film lines, roll mills and pressure filter tests.

NGA decided to take the industry insider <b>Rajnissh Soodd</b> as Country Manager on board.

„From our branch office, besides the Indian market, we can also serve South East Asia and Africa perfectly “, explains Rajnissh Soodd, Country Manager NGA Plastic Technology Private Limited.

„The multifaceted cooperation of Rajnissh Soodd with manufacturers of investment goods for the polymer industry for more than two decades and his closeness to different market segments, like compounding, masterbatch or petrochemical industry, will help him to understand the dynamic requirements of the industry. And with his expertise, he will effectively position the range of products of Collin Asia in the target market segments. “, says Corné Verstraten.

COLLIN Lab & Pilot Solutions  

https://www.collin-solutions.com/

Rajnissh Soodd, Country Manager NGA Plastic Technology Private Limited

2021-08-25 NGA

issue 02/2023

issue 01/2023

issue 09/2022

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