The Dow Chemical Company is introducing a new member of the recently launched RecycleReady Technology, which enables the recyclability of polyethylene-based barrier packaging as part of existing grocery store drop-off recycling programs. Created through collaboration with the Sustainable Packaging Coalition (SPC) and other industry members, Dow’s RecycleReady Technology helps converters create barrier pouches that answer consumer demand for more recyclable packaging options. 

RecycleReady Technology 

Simulation Verpackung

Polyethylen

Kunststoff-Recycling

Recyclable Flexible Stand-Up Pouches  

Millions of tons of plastic bottles, bags and other trash littering the oceans and clogging landfills could be turned into reusable fuel, thanks to research by the University of California, Irvine and the Shanghai Institute of Organic Chemistry. UCI chemists have figured out how to dissolve the strong bonds of polyethylene plastic to re-create petroleum and other products. The breakthrough means that the waste could someday be harvested and inexpensively recycled into valuable commodities.  

Degradation of Polyethylenes into Liquid Fuels and Waxes under Mild Conditions 

Technik Trend

kunststoffe-international.com

New Way to Recycle Plastic Waste into Fuel 

Manufacturers of plastics compounding machinery and plants are increasingly offering tailored systems for recycling plastics. Recycling is thus gaining increased acceptance and importance thanks to optimizations in processes.  

Compounders Are Showing Increased Interest in Recyclate 

Aufbereitungsmaschinen

Schmelzefilter

Compoundieren

Complete One-Stop Systems 

Phenolic resin based fiber-reinforced composites are used for lining elements of aircraft cabins due to safety, weight, and comfort requirements. However, because the matrix of these composites is cross-linked, they are difficult to recycle. Now, a chemical process for the recycling of polycyanurates has been adapted to the treatment of phenolic resin materials as well. 

Chemical Recycling of Fiber-Reinforced Thermosetting Composites 

Duroplaste

Harze

Reaktionsharze

Verbundwerkstoffe / Werkstoffverbunde

Kunststoff-Aufbereitung

Wiederaufbereitung

Fasern

Second Life for Aircraft Cabins 

Now, with suitable recycling technologies in place, the continuing research focuses mainly on re-using the reinforcement carbon fibers from pre-processing steps in the production of fiber composites. Meanwhile, the industrial processing of such secondary carbon fibers for the production of sheet molding compounds has met with success. 

Sheet Molding Compounds Made with Secondary Carbon Fibers for Luxury Class Cars 

Faserverarbeitung

Schäumen / Reaktive Verarbeitung

Secondary Carbon Fibers in  Large-Scale Production  

Although extruders can process high volumes of contaminated PET industrial wastes from the fiber, nonwovens or film production, they generally cannot return the residues directly to the production process. The PET melt achieves the necessary viscosity particularly cost-effectively thanks to a new and compact unit.  

Quick and Cost-Effective Processing of PET Industrial Wastes  

Polyethylenterephthalat

A Jump Reaction 

The single use coffee pod market has grown rapidly over the past decade and a new technology devoloped by Milacron ensures that single use coffee pods are able to enter the recycling stream rather than the landfill. Milacron’s patented co-injection systems with embedded Kortec technology are now being used in the production of 100% recyclable single use coffee pods. 

Enjoying Coffee with a Good Conscience 

Polypropylen

Spritzgießen

100 % Recyclable, Single Use Coffee Pods 

Aquafil Engineering GmbH, Berlin, Germany, focuses on the planning and development of efficient and cost-effective processing technology for the polymerization of polyamides and polyesters. Besides this core business, The company is now also integrating the recycling of post-industrial and post-consumer waste into the polymerization process. For example, the residual monomer produced by the polycondensation of polyamides is fed completely back to the process, so that a theoretical conversion of 100 % can be achieved by this Lactam Direct Recycling (LDR). 

Aquafil 

Kunststoff-Regenerate

New Directions in Recycling 

Die Erema Engineering Recycling Maschinen und Anlagen GmbH, Ansfelden, Austria, is expanding its Intarema system with a Smart-Factory package. In addition to the machine data already gathered, integrated sensors will in future acquire and evaluate the MVR (melt volume rate) and color, as well as the moisture content. This QualityOn package permits recyclers and manufacturers to demonstrate the quality of their recyclates by data acquisition and analysis. Electronically stored recipes can be compared and modified at the click of a mouse. To exploit the wealth of machine, quality and process data, a manufacturing execution system (MES) was developed. The re360 is claimed to operate independently of the system manufacturer and register the productivity of an entire machine park in five modules. Not only local systems, but the production sites around the world can be integrated. This is demonstrated by the manufacturer live at K 2016 by transmitting the machine, quality and process data of the recycling center in the outdoor area (where Erema recycles the plastic waste from the trade show) to the trade show booth, and presenting it there in real time. The system offers an overview of the load or downtimes of the systems, documents the quality characteristics of the recyclates and can indicate when maintenance work is due, or that individual parts need to be exchanged, which can be ordered directly from the online webshop. 

Erema 

Industrie 4.0

Recycling 4.0 

Ettlinger Kunststoffmaschinen GmbH, Königsbrunn, Germany, is rounding off its portfolio of melt filters for separating out foreign matter. The continuously operating melt filter of the ERF and ECO series can be integrated into almost any extrusion line, according to the manufacturer. 

Ettlinger 

Efficient Filtration of Melts 

Fimic Srl, Carmignano di Brenta, Italy, manufactures self-cleaning filters for recycling plastics. The manufacturer has now optimized an RAS filter for processing highly contaminated PVC. It has also developed the Era filter for materials requiring two filtration passages. 

Fimic 

Filter

Polyvinylchlorid

Kunststoffverarbeitung: Maschinen und Komponenten

Filter for PVC Processing 

Herbold Meckesheim GmbH, Meckesheim, Germany, is a manufacturer of machinery and systems for treating plastic waste. The company has analyzed the process chain for processing waste into five pillars (size reduction, shredding, fine grinding, washing/separating/drying and agglomeration/compacting), and offers methods for all processes. For example, the HGM series granulators have been devised for the size reduction of difficult, especially tough material or material containing foreign bodies, for which normal granulators have too short a knife lifetime, and conventional shredders cannot produce the required end product. Subsequently, further shredding can be carried out on an SB granulator with forced feeding. The feed material is not fed by into the grinding chamber by gravity as in the case of standard granulators, but by an even feeding by screw granulators. For fine grinding, a PU disc pulverizer can be used, which is suitable for grainy or brittle materials, such as PE pellets or rigid PVC regrind. Before reuse, the wastes are washed, separated and dried in the fourth column. 

Herbold Meckesheim  

Mühlen

Trockner

Fördersysteme

Granulieren

The Five Pillars of Plastic Recycling 

The extrusion line manufacturer Ye I Machinery Factory Co. LTD., Tainan, Taiwan, has offered plastics recycling systems for several years. The new YDN-2V-120 integrates the shredder, extruder and pelletizer in a system in a compact space. The screw diameter of 160 mm permits high throughputs. The company guarantees throughput rates of 900 kg/h for PP, 950 kg/h for HDPE and 1000 kg/ for LDPE. 

Ye I Machinery 

Extrusion

For Restricted Space 

Polystar Machinery Co., LTD., Tainan, Taiwan, is a manufacturer of plastics recycling machinery, which has revamped its portfolio to achieve greater user friendliness and efficiency. Spare parts purchasing and exchange can now be planned via an online platform. The Repro-Flex one-step recycling system can also process printed PE or PP packaging material. The system’s cutter compactor prepares the material and allows a constant feed into the extruder without size reduction. 

Polystar 

Improving Existing Systems 

For the first time in history of the K trade fair, plastic waste recycling will take place on site – in part with the plastic waste produced at the show itself. One type of pellets that can serve as an alternative to multilayer films to produce clean-sorted packaging plays an important role here. 

Key Elements of Recycling Live at the K 2016  

Blasfolienextrusion

Verpackungsmaterial

Plastics Loop Closed 

Sesotec Sorting Systems Help Ensure High Quality in PET Flake Production 

With the rise in consumption of raw materials, plastic processors are facing higher political and social demands to use a greater proportion of recycled materials. Companies such as MultiPet GmbH, a recycling company which processes used PET materials into flakes, make this transition possible. Along with their sister company Multiport, which specialises in making HDPE compounds from packaging waste, they are considered important suppliers of secondary raw materials for the plastics processing industry. 

How does the PET recycling process work? 

MultiPet receives pressed bales of pre-sorted PET waste. After the bales are broken up, plastics are first checked for impurities, then ground into flakes and intensively washed. 

The FLAKE PURIFIER+ multi-sensor sorting systems from Sesotec come into play directly after the ground material has undergone a two-stage density separation process involving two rounds of hot washing. At this stage, the sorting systems separate discoloured materials, foreign plastics and metals from the flakes. 

Sesotec FLAKE PURIFIER+ units are designed especially for use in plastic flake processing and are characterized above all by ease of operation and heightened throughput capacities. 

At MultiPet, the FLAKE PURIFIER+ systems are equipped with multiple sensors for colour and material recognition. This enables MultiPet to produce PET flakes in batches of different colours and qualities for use as raw materials in the plastics processing industry. By using recyclates produced by MultiPet, plastic processors are reducing their CO2 footprint, contributing to climate protection and conserving resources. 

“Sesotec’s processing technology enables us to keep the loss of good material to a minimum”, says Herbert Snell, Managing Director of MultiPet GmbH. “This makes our sorting processes even more efficient.“ Sesotec‘s scope of delivery was complemented by a turn-key material handling setup which included steel work platforms and material conveyance systems, simplifying integration into the overall system. 

Sesotec GmbH  

www.sesotec.com

10923591 News Beitrag [Online] - Sesotec-Sortiersysteme bei Mult

FLAKE PURIFIER+ multi-sensor sorting systems from Sesotec in the recycling plant of MultiPet GmbH. (© Sesotec GmbH) 

issue 01/2021

issue 10/2020

issue 09/2020

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