Protec - PP - Compression Polymers Corp. and Vycom Corp

Kunststoffe international, 2005-11-21, Centralized Supply for 59 Injection Moulding Machines
...al Conveying The material and pipeline routing was technically complicated by the design of the hall and its installations. For example, the material lines, starting from the coupling station, had to be installed vertically in stages through a fire-protection wall, to a high of about 8 m. From there, each conveying line had to be lowered four or five times, according to the hall length, and then led horizontally to the injection moulding machines (Fig. 3). The material conveying system consists...

Kunststoffe international, 2005-11-21, Drying, Conveying and Dosing of PET
... demands. Klöckner Pentaplast is one of the leading suppliers of PET film for various applications in the foods and medical sectors. At its Weert site in the Netherlands, it produces coextruded flat film. The compounding system from Mann+Hummel ProTec GmbH, Ludwigsburg/Germany, feeding a newly installed extrusion line, meets the following tasks: - transport of the raw materials from silos and large drums to the central drying system, - drying of hygroscopic raw materials, - feeding the dosing ...

Kunststoffe international, 2005-11-21, Exactly Suited Material Preparation: Reliable Use of PET Flakes
...ible for decisions concerning how material preparation – crystallisation, drying process and supply – takes place, in order to be able to finally produce a qualitatively high-value final product. Here specific know-how, as offered by Mann+Hummel ProTec under the trade name Somos, helps to arrange for continuous high-quality of the final products through the positive influence of the raw material. Technical School Supplies Important Base Data The different quality classes in which PET flakes are...

Kunststoffe international, 2005-11-21, Injection Moulding Operation: Tailor-made Materials Supply
... Sarnatech Schenk in Esslingen at the start of 2003 currently has eight injection moulding machines whose clamping forces range from 2000kN to 6500kN, and a two-component machine. Resins processed include ABS, PC, and PA with glassfibre. Mann+Hummel ProTec GmbH, Ludwigsburg/Germany, set up a central material-drying and feeding installation featuring machine-specific feed pipes and coupling stations. The installation is composed as follows: - System controller - Materials store room (external sil...

Kunststoffe international, 2005-11-21, Material Compounding: Customised Material Supply
... flakes. "Our customers process a very wide range of solid material grades, all of which have their own specific product properties", explains Milica Engel, head of Process Technology/Development Plant at the new Bensheim site of Mann+Hummel ProTec since 2003. "The problem in system business is frequently the lack of detailed knowledge available on the individual characteristics of these materials. Materials in the same group often only differ slightly in optical terms. In practical ...

Kunststoffe international, 2005-11-21, Mixing, Conveying, Metering: From Silo to Screw
...able that ensures constant intake conditions. The Brabender ScrewDisc metering devices are also available as individual differential metering balances. S+S Metallsuchgeräte und Recyclingtechnik GmbH, Schönberg/Germany, exhibited a metal separator protector (Fig.4) that can be used directly above the material feed of an extruder, a blow moulding machine or an injection moulding machine. Aside from retaining hitherto properties, its versatility for practically all conveying devices, especially fo...

Kunststoffe international, 2005-11-21, Trends at the IAA: Shop Window for Innovations in the Motor Industry
...ith the use of plastics for roofs and roof modules. The roof module for the new Opel Zafira is the first step in this direction. In addition, Webasto has already launched a new plastic film on to the market under the name "Glas ProTec" that makes the single-layer safety glass of sliding roofs more resistant to external influences. Should the pane of glass fracture for some reason, the film will also prevent glass splinters from flying around and thus additionally enhance passenger protec...

Kunststoffe international, 2006-01-13, Materials Handling: Centralisation Complete
Market and Management Centralisation Complete Materials Handling. Mann+Hummel ProTec GmbH has completed the relocation of its facilities in Ludwigsburg, Weiterstadt and Königswinter to a new site in Bensheim ahead of schedule. A green-field factory was literally erected and designed according to the Kanban principle. Kunststoffe’s chief editor Gerhard Gotzmann paid a visit to the new site and talked to Norbert Strohbeck, production manager, and Michael Zlotos, CEO, about the advantages of the ...

Kunststoffe international, 2006-09-26, Material Handling: Basis of Product Quality
...oducer to determine their causes. This documentation certainly serves as a proof as well, for constant production that meets quality requirements. References: 1 „Kunststoffe richtig transportieren“, Handout Mann+Hummel ProTec GmbH; 2006. 2 „Es geht ums Prinzip“, Handout Mann+Hummel ProTec GmbH; 2006. 3 Weniger Verschleiß, Extrusion 04/2006, p.10. 4 „Unglaubliche Einsparungs- und Gewinnpotenziale beim Spritzgießen durch Granulat-Entstaubung“, Presentation of MBengineering GmbH & Co. KG. 5 „Vor...

Kunststoffe international, 2006-09-28, High-tech in a Holiday Region: With Clockwork Precision
...he last major expansion in production, where the production surface was increased threefold and the number of injection moulding machines doubled, Wild & Küpfer invested in an elaborate and refined material feed system from Mann + Hummel ProTec, Bensheim (Fig. 2). The system was tailor-made and has 30 drying hoppers, which can each supply up to three machines with material. Refined Material Feed. Mario Mäder characterises the new material supply concept. “In the past, with our automatic feed sy...

Kunststoffe international, 2007-01-22, Differentiated Market Working for Customer Proximity
...ers felt that the answer lay in the purchase of an American company, and hence Universal Dynamics Inc. was acquired in 1995, which, since then, has strategically divided up the worldwide market for industrial plants and components with Mann+Hummel ProTec GmbH. Gerhard Gotzmann Mann+Hummel’s ProTec division is divided up into two strategically-cooperating but regionally distinct company units: Universal Dynamics Inc., which has its focus on America, and Mann+Hummel ProTec GmbH, which covers pri...

Kunststoffe international, 2007-09-19, Basis of Product Quality
...e. Due to the regeneration air flowing through the wheel twice at different temperatures and recovery of heat in an air/air heat exchanger an energy-saving drying process results. Further development of the dryer generation of Mann+ Hummel ProTec GmbH, Bensheim, Germany. Is targeted especially at producers of engineering parts having relatively small machine sizes and automated production. For efficient drying close to the machine the Somos T/TF eco compact dryer series both with and without the...

Kunststoffe international, 2008-01-15, The Circle Closes
...on of more than 10%. Why Crystallize? To enable drying at temperatures greater than 160°C, the PET has to be converted beforehand from an amorphous to a semi-crystalline state. For this process the crystallizer (manufacturer: Mann+Hummel ProTec GmbH, Bensheim, Germany, titel picture) is used: PET (A) attains a so-called glass transition range at approx. 80°C. At this temperature the transition of the molecular structure to the semi-crystalline range takes place and PET (C) is created. As congl...

Kunststoffe international, 2009-01-26, Just the Right Dose
...ividually prepared compounds generally find little or no application in spunbonded production. Rather, the additives – tailored to the product’s intended use – are incorporated into the basic material inline during the process. Mann + Hummel ProTec, Bensheim, Germany, were commissioned to design and deliver the machinery for supplying material for the new spunbonded plant at RKW Gronau. The main component (PP) was to be fed to the extruder from two existing on-site silos, more precisely ...

Kunststoffe international, 2009-10-14, Granules Galore
...t of the lowest possible dew point. The fact that as a rule a dew point of -30°C to -35°C is absolutely adequate and that the energy consumed by a further reduction is disproportionate has been shown for example in the publication by Mann+Hummel ProTec GmbH, Bensheim, Germany [2] (Fig. 7). Regardless of the drying process energy efficient drying is currently being successfully realized by the use of intelligent control strategies. For example dry air drying now adapts the quantity of dry air to ...

Kunststoffe international, 2010-09-24, Precise and Efficient
... the drying process really needs. Many exhibitors are focusing specifically on drying of PET, given that the number of applications for this versatile material continues to grow noticeably. Mann+Hummel Focus on Extremely Small Quantities Mann+Hummel Protec GmbH, Ludwigsburg, Germany, is introducing its new generation of stationary material drying systems by displaying the dehumidifying dryer model Somos D200 (air throughput 200 m3/h) and a modular hopper system with drying hoppers ranging in siz...

Kunststoffe international, 2011-01-25, Efficiency Has Many Names
...systems. In particular, its patented Pell-bow pipe elbow is designed to handle the frequent necessary diverting of pellet streams. An expansion chamber located between inlet and outlet of the elbow slows the flow of material and also forms a type of protective layer from the conveyed material that prevents wall friction and dust generation. At the same time, the geometry prevents the material from being deposited in the elbow, which is purged by the pure pneumatic gas. As it is not possible to c...

Kunststoffe international, 2011-01-25, Sensitive Dosing
...ial, the dosing system itself and its regulation also have technological limitations. To be sure, progress has clearly been made in this respect, such as the current generation of weighing cells and Mann+Hummel ProTec’s new dosing system for minimal amounts which is designed for use in their Somos Gramix S9 and Gramix E dosing and mixing systems. Highly Dynamic Weighing Electronics, … The special feature of the weighing cell used in the current generation of the Gramix S/E dosing and mixing syst...

Kunststoffe international, 2011-09-23, Processes before the Melt
...Transparency Flexible and easily operated material handling systems specially designed for the cost-effective processing of free-flowing plastics in the injection molding process are at the focus of the fair appearance of Mann + Hummel ProTec GmbH, Bensheim, Germany. The company will be presenting both individual units and complete process engineering solutions for drying, conveying, dosing, dyeing and recycling. Announced among other things was the presentation of two new developments: A visual...

Kunststoffe international, 2012-04-20, Home and Dry?
...ledge of, and experiences with, the relatively recent field of bioplastics are still patchy. The results presented here, along with findings from practical studies jointly conducted by the Kunststoff-Zentrum SKZ, Würzburg, Germany, and Mann+ Hummel ProTec GmbH, Bensheim, Germany, were obtained on a commercial injection molding grade of PLA supplied by Nature Works, Minnetonka, MN, USA. While they are a snapshot in time, they represent a further step toward plugging the gaps. In the current stand...

Kunststoffe international, 2012-09-17, Simple, Precise and Automated
...are often packaged in bulk-material containers called octabins, as well as in big bags made of sturdy plastic fabric (usually polyethylene), for shipment to the processor. This type of packaging is ideal for free-flowing materials and provides protection against external influences. However, it is difficult for processors to handle. The problem is that the pellets need to be removed as completely as possible so that they can be processed. The effort required here is not to be underestimated. Big...

Kunststoffe international, 2012-10-15, Automated Precision
...ce. And that all the processes also have to be designed to be as energy-efficient as possible goes almost without saying. This is confirmed by the following examples. Comprehensive Process Control thanks to Networked Operation The former Mann+Hummel ProTec GmbH, today ProTec Polymer Processing GmbH, Bensheim, Germany, has concentrated of late on the improvement and optimization of plant controllers. The MH 45 controller tailored to extrusion processes, for example, allows the functions of up to ...

Kunststoffe international, 2013-01-28, With No Ifs and Buts
...cy, for example for the hot-air dryer Fig. 2. Extruder with backflushing melt filter. Here, the flakes are melted, freed of mechanical contamination and partly of dissolved volatile impurities (figures: ProTec Polymer Processing) Fig. 3. Tumble reactors used in a PET recycling unit with a capacity of over 20,000 t per year Fig. 4. Challenge test: Cleaning and removal of the defined chemicals impurities (initial) in the process steps “extrusion” and downstream treatment in the “Ohl tumble reactor...

Kunststoffe international, 2014-01-23, LFT Production: Greater Value in Combination
... process, continuous glass fiber strands are pulled through a polymer matrix and become embedded in the polymer matrix. After beating allowed to cool, the fiber-polymer strands are pelletized. The layout of the entire system developed by ProTec Polymer Processing GmbH, Bensheim, Germany, and PolymersNet GmbH, Lampertheim, Germany, for the production of LFT can be seen in Figure 2. From the creels, the fiber strands proceed through a special guide mechanism with chambers, where they are aligned i...

Kunststoffe international, 2014-01-23, Trend Report: The Devil Is in the Detail
... velocity of the PET in the melt phase for polycondensation, and thereby save energy and time. Trials in a pilot plant with throughputs up to 400 kg/h showed an increase in intrinsic viscosity and good decontamination performance of the LSP process. ProTec Polymer Processing GmbH, Bensheim, Germany, offers PET recycling systems working according to the OHL process with a tumble reactor (Fig. 9). The heatable and evacuatable tumble reactor forms the heart of a multi-stage recycling line, in which...

Kunststoffe international, 2015-02-28, New Livery for SSP Reactor
...or use in tire cords even need to feature an IV value of 1.1 dl/g or higher. To obtain high IV values in polyester, the material is usually submitted to posterior solid-state condensation in an SSP (solid state polycondensation) reactor such as the ProTec tumble reactor. In case the starting material was obtained from post-consumer waste, e. g. PET bottle flakes, the reactor decontaminates the material until it fits the requirements for food usage applicable to virgin materials [1], while at th...