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Fast and effective start of production / Guido Radig in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 6-8 Titre : Fast and effective start of production : The advantages of a network for global qualification for injection molding Type de document : texte imprimé Auteurs : Guido Radig, Auteur Année de publication : 2020 Article en page(s) : p. 6-8 Langues : Anglais (eng) Catégories : Matières plastiques -- Industrie et commerce Matières plastiques -- Moulage par injection Outillage Production Relations clients-fournisseurs Index. décimale : 668.4 Plastiques, vinyles Résumé : During this year's pandemic, maintaining supply capability has become a key necessity among processors. Closer involvement of suppliers is only logical in these circumstances. In toolmaking, new challenges are emerging for services related to molds. This is where the global, high-performance infrastructure of Barnes Molding Solutions enters the picture. The slogan here is "globally qualified local manufacturing". Note de contenu : - The strategic approach of standardized quality guidelines - Tech centers bring together qualification expertise - A holistic technology approach and one-stop specialist - Figure : Tool qualification in the test center in Bahlingen, Germany. After that, the tool is ready for the “site acceptance test”, i . e. for the acceptance on site directly at the customer - Fig. 1 : "Seal of Quality" stands for global quality standards of Barnes Molding Solutions - Fig. 3 : The "Online Mold Qualification" is transmitted from the test center by a high-resolution camera without the customer having to travel En ligne : https://drive.google.com/file/d/1pemfedHy15muoZ-kAqNpjHQj1Ly5YvqV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34819 [article]

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Medical applications of additive manufacturing / Frank Carsten Herzog in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 9-13 Titre : Medical applications of additive manufacturing : Status and perspectives for human medicine Type de document : texte imprimé Auteurs : Frank Carsten Herzog, Auteur Année de publication : 2020 Article en page(s) : p. 9-13 Langues : Anglais (eng) Catégories : Implants médicaux Implants orthopédiques Impression tridimensionnelle Masques antimicrobiens Polyamides Un polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine. Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères. Polymères en médecine Prothèses Technologie médicale Index. décimale : 668.4 Plastiques, vinyles Résumé : Anyone who introduced additive manufacturing (AM) in a company 15 years ago was a visionary. Anyone who did not do so ten years ago fell behind the early adopters. Anyone who still is not using additive manufacturing today is losing their edge over the competition. What this technology is considered capable of today and how it can be applied in many areas of application is shown (representative) by this expert’s view of medical technology. Note de contenu : - Figure : To enhance the mobility of the spine, the upper and lower shell of this disc prosthesis are connected with an elastic double spring made of titanium. The core also contains a cushioning silicone filling. The prosthesis can be manufactured according to the patient's anatomy using the LaserCusing process - Fig. 1 : Several parts for the automated suturing device for heart surgery are made simultaneously on a building board - Fig. 2 : 3D-printed titanium acetabular system - Fig. 3 : 3D-printed polyamide Venturi valves for ventilators - Fig. 4 : Reusable respirator mask, the filter elements are inserted between two soft plastic half shells - Fig. 5 : High precision fit : additive manufactured craniofacial, patient-specific implant - Fig. 6 : Tomorrow's factory requires a data flow from material supply (left) through component production to post-processing (right), which also includes the operation of driverless transport systems - Table 1 : Top 5 providers of metal printing (systems worth 20,000+ USD) - Table 2 : Top 5 providers of polymer printing (systems worth 20 000 + USD) En ligne : https://drive.google.com/file/d/1S0GQapHmzbO2uljBXHGqfbJImB_HZKbC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34820 [article]

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From fishing net to particle foam / Hans Axel Kristensen in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 14-17 Titre : From fishing net to particle foam : expanded polypropylene from maritime plastic waste Type de document : texte imprimé Auteurs : Hans Axel Kristensen, Auteur ; Jens Grunwald, Auteur ; Helge Lüsebrink, Auteur Année de publication : 2020 Article en page(s) : p. 14-17 Langues : Anglais (eng) Catégories : Filets de pêche -- Recyclage Matières plastiques -- Recyclage Polymères expansés Polypropylène Recyclage mécanique Index. décimale : 668.4 Plastiques, vinyles Résumé : A large part of the plastic waste in the sea comes from the maritime industry. The Danish company Plastix recycles old fishing nets and ropes. The granules produced are used by JSP International, among others, to manufacture expanded polypropylene (EPP). This results in a 7 % reduction in CO2 emissions compared to virgin material. In order to obtain the same properties as virgin material, the recyclates must meet strict requirements. This requires a precise analysis of the waste in the recycling process and strict quality control. Note de contenu : - Extended producer responsibility - Recycling of fishing nets - Figure : 11 % of the plastic waste in the sea comes from the maritime industry. For the recycling of old fishing nets and ropes, accurate sorting is very important - Fig. 1 : Over 900 different types of nets and ropes are stored in the Plastix database. The “Wall of Fame” of the company shows an extract - Fig. 2 : Mechanical recycling turns the maritime waste back into high-quality plastic granulate - Fig. 3 : Before delivery, the recyclates are analyzed and subjected to quality control - Fig. 4 : Feasibility study for the Urban Arrow Shorty cargo bicycle : the transport container was made entirely from Arpro 35 Ocean particle foam En ligne : https://drive.google.com/file/d/1LqK15MQee3DINx_7YUrTqHti7TL7Q8_I/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34821 [article]

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Foamed and still extruded in one step / Christina Hoffmann in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 18-21 Titre : Foamed and still extruded in one step : Method for the simultaneous extrusion of window profiles with a foam core Type de document : texte imprimé Auteurs : Christina Hoffmann, Auteur ; Johannes Rudloff, Auteur ; Christian Eck, Auteur ; Eduard Kraus, Auteur ; Thomas Hochrein, Auteur ; Hermann Achenbach, Auteur ; Marieluise Lang, Auteur ; Martin Bastian, Auteur Année de publication : 2020 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle Durée de vie (Ingénierie) Micrographie Microscopie électronique à balayage Mousses plastiques -- Extrusion Polymères expansés Polystyrène Index. décimale : 668.4 Plastiques, vinyles Résumé : Foamed polystyrene in window profiles and façade elements can improve their thermal insulation and there-fore their environmental efficiency. Simultaneous extrusion of polyvinyl chloride profiles with a PS foam core is challenging due to the different processing conditions and has not been performed before. A trial plant for researching this process has now been set up at the SKZ. Note de contenu : - One-step process for foam-filled profiles - Homogeneous and fine-celled foam structure - Processing in a tandem extrusion line - Problems with the die - Welding of foam-filled profiles - How sustainable is the process ? - Environmental life-cycle analysis - Fig. 1 : The foaming of PS was investigated in a test system developed for this purpose - Fig. 2 : SEM micrograph of a foam sample with graphite as nucleation agent with 150x magnification : the closed-cell, highly homogeneous and fine-celled structure of the foams is good to see - Fig. 3 : The tandem extrusion system permits extrusion of PVC profiles with foamed PS core - Fig. 4 : Front view of the extrusion die with frame radiator : the mold combines PVC profile extrusion with PS foam extrusion - Fig. 5 : Simulated pressure and viscosity profiles for the PVC flow channel of the die and the PS flow channel - Fig. 6 : Specific energy consumption of the individual components based on 1m of manufac-tured profile En ligne : https://drive.google.com/file/d/139XZRUzHOndv0RWD3fX4RqNFTkf5o67M/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34822 [article]

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Less is often more / Mark Berlin in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 22-26 Titre : Less is often more : Potential savings arising from the use of energy management in mold temperature control Type de document : texte imprimé Auteurs : Mark Berlin, Auteur Année de publication : 2020 Article en page(s) : p. 22-26 Langues : Anglais (eng) Catégories : Economies d'énergie Énergie -- Consommation Isolation thermique Moules d'injection Structures multicouches Température -- Contrôle Index. décimale : 668.4 Plastiques, vinyles Résumé : As part of an energy-saving project, the companies Ejot and RK Kutting looked at mold temperature control in a series application, paying particular attention to mold hoses. The strategic use of thermal insulation effectively reduced heat losses from the overall system and shortened the warm-up time by 40 %. The insulation also provides reliable protection against contact burns. Note de contenu : - Hoes with multi-layer insulation and further measures - Analysis of current state and optimization of hose lines - Actual energy savings are lower - Project pays pays for itself within months - Fig. 1 : Schematic structure of an injection molding machine. The areas of relevance to mold temperature control (heat emission/loss) are shown in green - Fig. 2 : Measuring the surface temperature of the hose with an IR camera. Left: comparison of ordinary WF and insulated WFI hose; media tempera-ture: 160 °C, surface temperature WF: 131 °C, WFI: 82 °C. Right: WFI with insulating sleeve; media temperature 230 °C - Fig. 3 : Comparison of the legacy hose with the insulated hose solution shows that the power loss in temperature control hoses should not be underestimated - Fig. 4 : Mold hoses on the injection molding machine. The two photos on the left show the situ-ation before and the two photos on the right after optimization - Fig. 5 : The prelimi-nary studies show an estimated savings potential of 6.5 kW. This excludes the savings on warm-up-time and the lower quantity of heat radiated into the production shop - Fig. 6 : Comparison of expected and measured savings potential reveals a shortfall of approx. 50 % - Fig. 7 : As a result of the energy costs saved (annualized), the investment in the new hose system pays for itself in a short time - Table 1 : Overview of measures: how the hose lines and connections were optimized En ligne : https://drive.google.com/file/d/1aivO8jmTYSPRi1o8j0GqZsNp4x17qeaG/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34823 [article]

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Data management at the tool / Andreas Wenzel in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 27-31 Titre : Data management at the tool : The electronic tool logbook as a combination of operating manual and check list Type de document : texte imprimé Auteurs : Andreas Wenzel, Auteur ; Thomas Seul, Auteur ; Manuel Schneider, Auteur ; Simon Rönnecke, Auteur ; Udo Köllner, Auteur ; Andreas Gutterau, Auteur Année de publication : 2020 Article en page(s) : p. 27-31 Langues : Anglais (eng) Catégories : Gestion de données Journal de bord Matières plastiques -- Moulage par injection -- Appareils et matériel Numérisation Index. décimale : 668.4 Plastiques, vinyles Résumé : A tool logbook on paper is often not to hand just when you need it most. Or it is incomplete, since it is time ‧consuming to keep the information up to date. A cloud-independent, electronic tool log, which is directly integrated into the tool could make all the relevant data available directly. Digital access would allow authorized users to read or enter content, and, if needed, provide important operating instructions and information about the condition of the tool. Note de contenu : - The obligation to instruct users involves significant liability - Mini-computer at the injection mold - Digital storage solution, integrated into the tool in a tamper-proof way - Videos with assembly or maintenance instructions - Automatic updating on product and tool modifications - Components and integration into the injection mold - Summary : Providing useful data and overcoming language barriers - Figure : The installed ImPro module in use on a demonstrator tool under production conditions - Fig. 1 : The heart of the ImPro module with its diverse integrated functions, sensors and interfaces is a 1 GHz Cortex A8 processor with specially modified Linux operating system - Fig. 2 : Start screen of the user interface in the web browser with language selection, short over-view of the manufacturer’s tool data, access mask with password control and calendar overview. The illustrated QR code is used to access a video giving a short presentation of the ImPro user interface - Fig. 3 : User interface showing the integrated maintenance calendar (left), results of the mainten-ance with inserted pdf (center) and draft of a check list for planned maintenance (right). All con-tent can only be read or captured by authorized persons - Fig. 4 : Display of relevant tool data in the user interface, e. g. pdf, 3D-data, maintenance logs or assembly videos - Fig. 5 : Comparison of status monitoring at the machine side (left) and tool side (right) and display of the processing of the integrated 3-axis acceleration signal, which can be used as an indirect software cycle counter En ligne : https://drive.google.com/file/d/14aJYPtdR1F_CSUOW2i0a1KmWYXegZUBu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34824 [article]

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Correctly assessing the energy efficiency of heating systems / Roland Huber in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 32-34 Titre : Correctly assessing the energy efficiency of heating systems : Indirect heating without contact between heating element and water has many advantages Type de document : texte imprimé Auteurs : Roland Huber, Auteur Année de publication : 2020 Article en page(s) : p. 32-34 Langues : Anglais (eng) Catégories : Chauffage -- Appareils et matériels Efficacité énergétique Matières plastiques -- Moulage par injection Température -- Contrôle Index. décimale : 668.4 Plastiques, vinyles Résumé : It is often claimed that temperature control units featuring heaters with no direct contact to the heat transfer medium are at a disadvantage in terms of energy efficiency. While this may seem correct at first glance, a different picture emerges when the whole system is taken into consideration. Note de contenu : - The decisive question : How much heat is lost ? - Insulation and heat balance are key factors - Direct heating : Effective, but more maintenance-intensive - Indirect heating : Intelligent, energy-efficient solution found - Figure : Installation location of the indirect heating system in Series 5 tem-perature control units - Figure : View of HB-Therm's proprietary heating system without direct contact to the heat transfer medium. The QR code links to a video clip with more detailed information En ligne : https://drive.google.com/file/d/1jutidZ4Qrj77zymEiAvNiJBxw3_1qg0A/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34825 [article]

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Award-wining packaging solution increases productivity / Henning Becker in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 35-37 Titre : Award-wining packaging solution increases productivity : Fully automated production line with stack mold and in-mold labeling Type de document : texte imprimé Auteurs : Henning Becker, Auteur Année de publication : 2020 Article en page(s) : p. 35-37 Langues : Anglais (eng) Catégories : Emballages en matières plastiques Matières plastiques -- Moulage par injection Moules à empilement Moules d'injection Index. décimale : 668.4 Plastiques, vinyles Résumé : A solution, which is unique in Europe, significantly increases productivity and comprises the production from a 12+12 stack mold with fully automated in-mold labeling and removal with visual 100 % inspection of the parts. The process significantly increases productivity compared to conventional tooling solutions. The Thuringian mold making specialist roth was responsible for the design and construction of the stack mold. Ewikon supplied the customized valve gate hot runner system. Note de contenu : - Fully balanced melt channel layout on several levels - Valve pins for the two gating points are actuated as a group - 48 valve gate hot runner nozzles vary in length - Investment project of the year - Figure : Before relocation to the production site, extensive functional tests and the final trial were carried out at the roth technical center - Fig. 1 : The hinged lid is injected and labelled fully automated within one working cycle. The original label may not be shown here in con-sideration of the OEM - Fig. 2 : Modular, compact 12+12-cav-ity stack mold with valve gate full hot runner system - Fig. 3 : Hot runner layout of the 12+12-cavity stack mold with valve gate transition snorkel - Fig. 4 : The compact design with back-to-back arrangement of the drive units contributed to the weight reduction of the mold En ligne : https://drive.google.com/file/d/1q4WfCctbzOvp58FwZ--pptukcVEixFR_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34826 [article]

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Different viscosities combined in a material-friendly way / Marc Waffenschmidt in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 38-39 Titre : Different viscosities combined in a material-friendly way : Higher product quality at lower costs in a continuous process Type de document : texte imprimé Auteurs : Marc Waffenschmidt, Auteur ; Holger Lange, Auteur Année de publication : 2020 Article en page(s) : p. 38-39 Langues : Anglais (eng) Catégories : Bitume Caoutchouc Compoundage Extrudeuse à rouleau planétaire Matières plastiques -- Extrusion Mélanges (chimie) Index. décimale : 668.4 Plastiques, vinyles Résumé : The challenge of compounding a rubber-bitumen mixture was to bring the raw materials together in a way that was gentle on the material despite their very different viscosities. The material is to be melted, mixed, -dispersed, homogenized, degassed and discharged under controlled temperature conditions in a consistently high quality and viscosity. With the planetary roller extruder, Entex has transferred the manufacturing process from a batch process to a continuous process. Note de contenu : - Continuous preparation instead of batch process - Controlled temperature conditions for consistent quality - Fig. 1 : Roller barrel module of the planetary roller extruder: whereas twin-screw extruders have only one kneading gap over the entire length of the processing section, planetary roller extruders have two kneading gaps per planetary spindle, in which the compound is mixed, frictionally mixed and rolled - Fig. 2 : Plant design for continuous preparation of the mixture. Bitumen is supplied at two points to achieve mastification (breaking up the molecular chains) - Fig. 3 : Section through differently prepared rubber-bitumen products : on the left, the mixture produced on the basis of rubber powder from a conventional compounder, on the right the mixture produced on the basis of rubber granulate in the planetary roller extruder - Fig. 4 : Rubber-bitumen compound prepared with the planetary roller extruder En ligne : https://drive.google.com/file/d/1LTuNoScoXBqb2O3A_TuCSQF0Db8KKbkT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34827 [article]

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Turning old into new / Christian Hopmann in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 40-43 Titre : Turning old into new : A robust continuous process for the chemical recycling of polystyrene Type de document : texte imprimé Auteurs : Christian Hopmann, Auteur ; Philipp Schäfer, Auteur ; Nils Dauber, Auteur ; Martin Facklam, Auteur Année de publication : 2020 Article en page(s) : p. 40-43 Langues : Anglais (eng) Catégories : Caractérisation Dépolymérisation Extrusion réactive Matières plastiques -- Recyclage Polystyrène Recyclage chimique Index. décimale : 668.4 Plastiques, vinyles Résumé : Due to their good feed characteristics and self-cleaning properties, 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. Note de contenu : - Chemical recycling of polystyrene - Continuous depolymerization of polystyrene in a twin-screw extruder - Influence of screw speed and material composition - Figure : 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 - Fig. 1 : Depolymerization mechanism of polystyrene to styrene (in brackets: boiling temperatures) - Fig. 2 : Characterization of polymer degradation based on melt mass flow rate and glass transition temperature as a function of material composition and screw speed - Fig. 3 : Condensate yield as a function of material composi-tion and screw speed - Fig. 4 : Composition of the condensates depending on the input materials En ligne : https://drive.google.com/file/d/1UyWGZNryR3e0e1kj_8XOAHTRMYqDmYyF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34828 [article]

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An impact way beyond its small market share / Claus-Peter keller in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 9 (2020) . - p. 44-47 Titre : An impact way beyond its small market share : Fluoropolastics improve the durability and chemical resistance of products Type de document : texte imprimé Auteurs : Claus-Peter keller, Auteur Année de publication : 2020 Article en page(s) : p. 44-47 Langues : Anglais (eng) Catégories : Copolymère éthylène tétrafluoroéthylène Durée de vie (Ingénierie) Emballages en matières plastiques Fluoropolymères Polytétrafluoréthylène Résistance chimique Stratifiés Index. décimale : 668.4 Plastiques, vinyles Résumé : Although fluoroplastics only make up a very small part of the overall plastics market, they are an indispensable component of many applications. These materials play a central role in today's megatrends of digitalization, clean-energy generation and modern mobility concepts. Note de contenu : - High performance applications - More light permeable than glass, PE and PC - CCL improve signal transmission - Fluoropolymers-based composites - Figure : 44© Carl Hanser Verlag, Munich Kunststoffeinternational 9/2020FLUOROPLASTICS Trend ReportThe roof of the Vitam leisure center in Neydens, France, is made from ETFE film. A wooden structure supports the 53 ETFE cushions with a total sur-face area of 4300 m2 - Fig. 1 : Consumption of PTFE in 2019 in Western Europe by industry - Fig. 2 : Fluoroplastics are often used as chemical- and temperature-resistant tank linings for the chemical, pharmaceutical and semi-conductor industry - Fig. 3 : ETFE greenhouse films are long-lasting and can promote plant growth. The greenhouse in the picture has a surface area of 5000 m2 and has been covered with a single-layer F-Clean film - Fig. 4 : Copper-clad laminates (CCL) are some of the most interesting applications of fluoroplastics. They are used above all in the antenna technology of 5G transmission and receiver stations and cable technology En ligne : https://drive.google.com/file/d/1_VGJ9tZsOF5_Cdwec-0hfS_m8oe6zYsx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34829 [article]

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