Relevant bibliographies by topics / Screw melt extrusion

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Screw melt extrusion'

Author: Grafiati
Published: 11 December 2022
Last updated: 31 July 2025

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Journal articles on the topic "Screw melt extrusion"

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Gottschalk, Tobias, Cihangir Özbay, Tim Feuerbach, and Markus Thommes. "Predicting Throughput and Melt Temperature in Pharmaceutical Hot Melt Extrusion." Pharmaceutics 14, no. 9 (2022): 1757. http://dx.doi.org/10.3390/pharmaceutics14091757.

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Even though hot melt extrusion (HME) is a commonly applied process in the pharmaceutical area, determination of the optimal process parameters is demanding. The goal of this study was to find a rational approach for predetermining suitable extrusion parameters, with a focus on material temperature and throughput. A two-step optimization procedure, called scale-independent optimization strategy (SIOS), was applied and developed further, including the use of an autogenic extrusion mode. Three different polymers (Plasdone S-630, Soluplus, and Eudragit EPO) were considered, and different optimal p
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Winck, Judith, Tobias Gottschalk, and Markus Thommes. "Predicting Residence Time and Melt Temperature in Pharmaceutical Hot Melt Extrusion." Pharmaceutics 15, no. 5 (2023): 1417. http://dx.doi.org/10.3390/pharmaceutics15051417.

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Hot-melt extrusion is increasingly applied in the pharmaceutical area as a continuous processing technology, used to design custom products by co-processing drugs together with functional excipients. In this context, the residence time and processing temperature during extrusion are critical process parameters for ensuring the highest product qualities, particularly of thermosensitive materials. Within this study, a novel strategy is proposed to predict the residence time distribution and melt temperature during pharmaceutical hot-melt extrusion processes based on experimental data. To do this
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Trienens, Dorte, Volker Schöppner, and Robin Bunse. "Determination of Correlations between Melt Quality and the Screw Performance Index in the Extrusion Process." Polymers 15, no. 16 (2023): 3427. http://dx.doi.org/10.3390/polym15163427.

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For polymer-processing extruders, designing screws via analytical computational models is helpful for reducing experimental costs. However, the current simulation programs cannot predict the melt quality at the screw tip with sufficient accuracy. There are a number of definitions of melt quality in the literature. This paper will review some of these definitions and present how melt quality can be assessed in subsequent work. In this paper, both the thermal and material homogeneity of the melt quality are examined for correlations with the screw performance index. If correlations exist with th
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Nastaj, Andrzej, and Krzysztof Wilczyński. "Scaling-Up for the Counter-Rotating Twin Screw Extrusion of Polymers." Polymers 16, no. 19 (2024): 2720. http://dx.doi.org/10.3390/polym16192720.

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A novel and original computer scaling-up system for the counter-rotating twin screw extrusion of polymers was developed. In the system, each scaling parameter (scaling criterion) may be considered as an objective function to be minimized for the single parameters or the functional relationships along the length of the screw. Scaling was based on the process simulation, which was performed using the comprehensive (or global) counter-rotating twin screw extrusion program called TSEM (Twin Screw Extrusion Model). The extrusion process was scaled by applying GASESTWIN (Genetic Algorithms Screw Ext
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Alshetaili, Abdullah, Saad M. Alshahrani, Bjad K. Almutairy, and Michael A. Repka. "Hot Melt Extrusion Processing Parameters Optimization." Processes 8, no. 11 (2020): 1516. http://dx.doi.org/10.3390/pr8111516.

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The aim of this study was to demonstrate the impact of processing parameters of the hot-melt extrusion (HME) on the pharmaceutical formulation properties. Carbamazepine (CBZ) was selected as a model water-insoluble drug. It was incorporated into Soluplus®, which was used as the polymeric carrier, to produce a solid dispersion model system. The following HME-independent parameters were investigated at different levels: extrusion temperature, screw speed and screw configuration. Design of experiment (DOE) concept was applied to find the most significant factor with minimum numbers of experimenta
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Ji, Ho Suk, Geunyeop Park, and Hyun Wook Jung. "Rheological Properties and Melt Spinning Application of Controlled-Rheology Polypropylenes via Pilot-Scale Reactive Extrusion." Polymers 14, no. 15 (2022): 3226. http://dx.doi.org/10.3390/polym14153226.

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Based on pilot-scale twin-screw reactive extrusion, the structural and rheological properties of controlled-rheology polypropylenes (CR-PPs) are investigated, where the effects of peroxide content and extrusion conditions such as screw configuration, extrusion temperature, and screw speed are prioritized. The active chain cleavage reaction by a small peroxide content of less than 600 ppm inside the extruder gradually increases the melt index and narrows the molecular weight distribution of CR-PPs, thereby affording favorable properties that are applicable to the fiber spinning process. The mec
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Jinescu, Valeriu V., Mihail Juganaru, Cosmin Jinescu, and Nicoleta Sporea. "Determination of an Extrusion Machine Performance Based on the Working Field of the Extruder Die." Materiale Plastice 58, no. 3 (2021): 217–30. http://dx.doi.org/10.37358/mp.21.3.5519.

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Some inventions along with theoretical and experimental research made it possible to increase the output of a thermally homogeneous melt provided by the screw. However, the quality of the extruded product depends on some specific features of the extrusion die and to a large extent on the rheological behavior (viscous and elastic) of the polymer melt. The mismatch between the design of the screw-cylinder subassembly and the design of the extrusion die results in products with relatively short service life. The present paper has drawn up the working field of the extruder die and adjusted it base
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Jinescu, Valeriu V., Mihail Juganaru, Cosmin Jinescu, and Nicoleta Sporea. "Determination of an Extrusion Machine Performance Based on the Working Field of the Extruder Die." Materiale Plastice 58, no. 3 (2021): 217–30. http://dx.doi.org/10.37358/mp.21.3.5519.

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Some inventions along with theoretical and experimental research made it possible to increase the output of a thermally homogeneous melt provided by the screw. However, the quality of the extruded product depends on some specific features of the extrusion die and to a large extent on the rheological behavior (viscous and elastic) of the polymer melt. The mismatch between the design of the screw-cylinder subassembly and the design of the extrusion die results in products with relatively short service life. The present paper has drawn up the working field of the extruder die and adjusted it base
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Kaczor, Daniel, Krzysztof Bajer, Aneta Raszkowska-Kaczor, Grzegorz Domek, Piotr Madajski, and Pawel Szroeder. "The Influence of Multiple Extrusions on the Properties of High Filled Polylactide/Multiwall Carbon Nanotube Composites." Materials 15, no. 24 (2022): 8958. http://dx.doi.org/10.3390/ma15248958.

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High filled polylactide/multiwall carbon nanotube composites were subjected to multiple extrusions using single-screw and twin-screw extruders. Samples of the processed composites were characterized by SEM, XRD, Raman, and FTIR spectroscopy. Thermal and rheological properties were investigated by DSC and MFR analyses. Subsequent extrusions resulted in decreased torque and process efficiency, which is a consequence of the viscosity reduction of PLA. Thermal and rheological properties of composites changed after each extrusion as well. As revealed by DSC analyses, cold crystallization temperatur
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Wilczynski, K. "Polymer Melt Temperature in Single Screw Extrusion." International Polymer Processing 3, no. 3 (1988): 151–55. http://dx.doi.org/10.3139/217.880151.

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Dissertations / Theses on the topic "Screw melt extrusion"

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Strandberg, Marcus. "Determination and implementation of polymer parameters into simulations of the twin-screw extrusion process." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-27184.

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This thesis was conducted in cooperation with a Swedish company that develops and manufactures plastic compounds. An increasing need for identifying material properties is seen within the industry in order to predict the outcome of the extrusion process by using simulations. The purpose of this study was to expand a material database with the results obtained through various measurements of the material parameters in order to enable simulations. The numerical descriptions would be analyzed and validated in relation to the obtained results and conducted methods to enable implementation of the m
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Singh, D. P. "Flow and mixing studies in a co-rotating intermeshing twin screw extruder." Thesis, Brunel University, 1988. http://bura.brunel.ac.uk/handle/2438/5548.

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The basic understanding of mixing in the process of polymer melt extrusion by twin screw extruder is limited by their geometrical complexity and the interactions of the process parameters. Mixing and flow in a 100mm diameter, trapezoidal channeled, intermeshing co-rotating twin-screw extruder have been characterised by determination of residence time distribution (RTD) and of the paths taken by tracers added to the melt. The axial mixing and the effects of varius parameters on it were established by studying RTD using tracer techniques. As the tail of the distribution is of paramount importanc
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Vera-Sorroche, Javier. "Thermal homogeneity and energy efficiency in single screw extrusion of polymers : the use of in-process metrology to quantify the effects of process conditions, polymer rheology, screw geometry and extruder scale on melt temperature and specific energy consumption." Thesis, University of Bradford, 2014. http://hdl.handle.net/10454/13965.

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Polymer extrusion is an energy intensive process whereby the simultaneous action of viscous shear and thermal conduction are used to convert solid polymer to a melt which can be formed into a shape. To optimise efficiency, a homogeneous melt is required with minimum consumption of process energy. In this work, in-process monitoring techniques have been used to characterise the thermal dynamics of the single screw extrusion process with real-time quantification of energy consumption. Thermocouple grid sensors were used to measure radial melt temperatures across the melt flow at the entrance to
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Dang, Hoang Phuc. "Fabrication and characterisation of 3D printed poly (caprolactone) scaffolds with bimodal porosity for local drug delivery and tissue reconstruction applications." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/157409/1/Hoang%20Phuc_Dang_Thesis.pdf.

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Tissue reconstruction of large/critical-size defects requires scaffolds that are able to support tissue regeneration combined with other treatments to prevent tissue inflammation and disease recurrence. Therefore, this thesis introduced and characterized a new type of 3D scaffolds having macroscale porosity generated from the printing pattern and intra-strut microscale porosity to be used as a dual-function scaffold for both local drug delivery and tissue reconstruction. The scaffold was proved to provide superior treatment for breast cancer compared with conventional systemic administration m
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Wood, Clive John. "Investigation of a solvent-free continuous process to produce pharmaceutical co-crystals : understanding and developing solvent-free continuous cocrystallisation (SFCC) through study of co-crystal formation under the application of heat, model shear and twin screw extrusion, including development of a near infrared spectroscopy partial least squares quantification method." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14580.

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This project utilised a novel solvent-free continuous cocrystallisation (SFCC) method to manufacture pharmaceutical co-crystals. The objectives were to optimize the process towards achieving high co-crystal yields and to understand the behaviour of co-crystals under different conditions. Particular attention was paid to the development of near infrared (NIR) spectroscopy as a process analytical technology (PAT). Twin screw, hot melt extrusion was the base technique of the SFCC process. Changing parameters such as temperature, screw speed and screw geometry was important for improving the co-cr
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Fu, Tingrui. "PP/clay nanocomposites : compounding and thin-wall injection moulding." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/24655.

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This research investigates formulation, compounding and thin-wall injection moulding of Polypropylene/clay nanocomposites (PPCNs) prepared using conventional melt-state processes. An independent study on single screw extrusion dynamics using Design of Experiments (DoE) was performed first. Then the optimum formulation of PPCNs and compounding conditions were determined using this strategy. The outcomes from the DoE study were then applied to produce PPCN compounds for the subsequent study of thin-wall injection moulding, for which a novel four-cavity injection moulding system was designed usin
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Xu, Suxuan. "Fibrous soy protein meat analog from low moisture twin-screw extrusion." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6035.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 16, 2008) Includes bibliographical references.
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Vera-Sorroche, Javier, Adrian L. Kelly, Elaine C. Brown, and Philip D. Coates. "Infrared Melt Temperature Measurement of Single Screw Extrusion." 2015. http://hdl.handle.net/10454/9238.

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No<br>An infrared temperature sensor has been used to provide real time quantification of the thermal homogeneity of polymer extrusion. The non-intrusive sensor was located in the barrel of a single screw extruder, positioned such that it provided a measurement of melt temperature in the channel of the metering section of the extruder screw. The rapid response of the technique enabled melt temperature within the extruder screw channel to be monitored in real time, allowing quantification of the thermal stability of the extrusion process. Two polyethylenes were used in experiments with three ex
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Kelly, Adrian L., Elaine C. Brown, and Philip D. Coates. "The effect of screw geometry on melt temperature profile in single screw extrusion." 2006. http://hdl.handle.net/10454/3917.

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No<br>Experimental observations of melt temperature profiles and melting performance of extruder screws are reported. A novel temperature sensor consisting of a grid of thermocouple junctions was used to take multiple temperature readings in real time across melt flow in a single screw extruder. Melt pressure in the die and power consumption were also monitored. Three extruder screws at a range of screw speeds were examined for a commercial grade of low density polyethylene. Results showed melt temperature fields at low throughputs to be relatively independent of screw geometry with a flat-sha
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Brown, Elaine C., Adrian L. Kelly, and Philip D. Coates. "Melt temperature field measurement in single screw extrusion using thermocouple meshes." 2004. http://hdl.handle.net/10454/3255.

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No<br>The development and validation of a sensor for extrusion melt temperature field measurement is described. A grid of opposing thermocouple wires was constructed and held in position by a supporting frame. Wires were joined together at crossing points to form thermocouple junctions, which were computer monitored. The mesh was used to monitor melt temperature fields during single screw extrusion at the die entrance. Design and construction of the mesh is described in addition to experimental optimization of wire diameter and junction forming. Calibration of the sensor and potential measurem
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Book chapters on the topic "Screw melt extrusion"

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Luker, Keith. "Single-Screw Extrusion: Principles." In Hot-Melt Extrusion: Pharmaceutical Applications. John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9780470711415.ch1.

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Leister, Dirk, Tom Geilen, and Thobias Geissler. "Twin-screw Extruders for Pharmaceutical Hot-melt Extrusion: Technology, Techniques and Practices." In Hot-Melt Extrusion: Pharmaceutical Applications. John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9780470711415.ch2.

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Chen, Qiong, and Minwei Xu. "Twin-Screw Extrusion Processing for Textured Plant Protein Meat Analogs." In Methods and Protocols in Food Science. Springer US, 2024. https://doi.org/10.1007/978-1-0716-4272-6_32.

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Han, Chang Dae. "Plasticating Single-Screw Extrusion." In Rheology and Processing of Polymeric Materials: Volume 2: Polymer Processing. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195187830.003.0007.

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There are two types of extruder: (1) single-screw extruders and (2) twin-screw extruders. The single-screw extruder is one of the most important pieces of equipment in the processing of thermoplastic polymers. Accordingly, during the past three decades, many attempts have been made to analyze the performance of single-screw extruders using different degrees of mathematical sophistication (Cox and Fenner 1980; Donovan 1971; Edmondson and Fenner 1975; Elbirli et al. 1983, 1984; Halmos et al. 1978; Han et al. 1991a, 1991b, 1996; Lee and Han 1990; Lindt 1976; Lindt and Elbirli 1985; Shapiro et al.
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Ramesh, M. "Polypropylene/Clay Nanocomposites." In Materials Research Foundations. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644902035-9.

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Polymers play a vital role in material science; they have been utilised for more than a century. Cosmetics, geotextiles, aircraft, and automobiles are just a few of the sectors that employ polypropylene. The addition of appropriate clay, can improve the mechanical and barrier characteristics of the material. This chapter deals with various types of fabrication as extrusion process by using twin screw extruder, solution blending method, melt-blending method, in-situ polymerization method, direct melt compounding, ultra sound-aided extrusion and master batch dilution. To characterize the polypro
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Conference papers on the topic "Screw melt extrusion"

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Xie, Jeffrey, Derek Mitchell, Bill Oberg, Raj Noorithaya, and Bill Courtney. "Fracture of a Discharge Screw Element in a Polyethylene Resin Extruder." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01151.

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Abstract A discharge screw element (DSE) A in a polyethylene resin extruder was found fractured after excessive temperature excursion and main motor power spike were experienced. An investigation was subsequently conducted to understand the root causes of the failure; determine the construction materials of the DSEs and the barrels; and provide recommendations to prevent similar failure. The fracture occurred at a weak portion of the DSE A as a result of a frictional stress (shear stress) due to excessive adhesive wear between the hardfacings of DSE A and the corresponding barrel A. The weak p
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Wilczynski, K., and A. Nastaj. "SSEM-AG Computer Model for Optimization of Polymer Extrusion." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13074.

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The optimization of an extrusion process is a conflicting, multi-objective problem. It is complicated by the number of variables (screw/die geometry, operating conditions, material data) and their non-linear relations, as well as by the opposing criteria, for example extrusion throughput and power consumption. It is difficult to find the global optimum for the process avoiding local optima. There are two approaches to solve the problem, experimental and using a mathematical model of extrusion. Optimization techniques based on an experimentation are time-consuming and very expensive. In this pa
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Velghe, Ineke, Bart Buffel, Veerle Vandeginste, Wim Thielemans, and Frederik Desplentere. "Effect of melt processing conditions on the degradation of PLA during single-screw extrusion." In PROCEEDINGS OF THE 38TH INTERNATIONAL CONFERENCE OF THE POLYMER PROCESSING SOCIETY (PPS-38). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0205344.

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BHAGANAGAR, SIDDHARTH, PIAS KUMAR BISWAS, MANGILAL AGARWAL, and HAMID DALIR. "ENHANCING POLYLACTIC ACID (PLA) FOR 3D PRINTING WITH CELLULOSE NANOFIBERS VIA TWIN SCREW MELT EXTRUSION." In Proceedings for the American Society for Composites-Thirty Eighth Technical Conference. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/asc38/36537.

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In this study, cellulose nanofiber (CNF) reinforced polylactic acid (PLA) filaments were made via melt extrusion for 3D printing applications. The use of CNF reinforcement may enhance the PLA's mechanical attributes, making it a better material for a variety of 3D printing applications. In order to create the nanocomposites, a master batch of PLA and CNFs was premixed, and the CNFs were subsequently diluted throughout the extrusion process to final concentrations of 1, 3, and 5 wt%. The dilution was done to evaluate how the morphological and mechanical characteristics of the composites would b
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Abeykoon, Chamil, Kang Li, Peter J. Martin, and Adrian L. Kelly. "Modelling of melt pressure development in polymer extrusion: Effects of process settings and screw geometry." In 2011 International Conference on Modelling, Identification and Control. IEEE, 2011. http://dx.doi.org/10.1109/icmic.2011.5973700.

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Abeykoon, C., Jing Deng, Kang Li, M. McAfee, P. J. Martin, and A. L. Kelly. "Modelling the Effects of Operating Conditions on Die Melt Temperature Homogeneity in Single Screw Extrusion." In UKACC International Conference on CONTROL 2010. Institution of Engineering and Technology, 2010. http://dx.doi.org/10.1049/ic.2010.0254.

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Pham, Thuy Linh, Jean Balcaen, Sambor Chhay, Yves Bereaux, and Jean-Yves Charmeau. "Monitoring of Polymer Plastication in the Injection Moulding Process." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64859.

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In injection moulding or in extrusion, plastication is the step during which polymer pellets are melted by the means of mechanical dissipation provided by a rotating screw and by thermal conduction coming from a heated metallic barrel. This step is crucial for melt thermal homogeneity, charge dispersion and fibre length preservation. Although there have been a large number of theoretical and experimental studies of plastication during the past decades, mostly on extrusion and mostly using the screw extraction technique, extremely few of them have dealt with trying to visualise plastication, le
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Karrenberg, Gregor, and Johannes Wortberg. "Development of a high speed extrusion concept using a floating screw sleeve for solid-melt-separation." In PROCEEDINGS OF PPS-30: The 30th International Conference of the Polymer Processing Society – Conference Papers. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4918473.

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Trienens, Dorte, and Volker Schöppner. "Investigation of the influence of screw geometry on the resulting melt quality for cast film extrusion." In PROCEEDINGS OF THE 38TH INTERNATIONAL CONFERENCE OF THE POLYMER PROCESSING SOCIETY (PPS-38). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0204521.

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Kuzmin, A. M. "Investigation of the Orientational Mechanical Properties of Biodegradable Extrusion Films Based on Polyolefins and Beet Pulp." In Modern Trends in Manufacturing Technologies and Equipment. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901755-26.

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Abstract. The article discusses the possibility of obtaining biodegradable films based on polyolefins and beet pulp by the extrusion method. Biodegradable composites of two mixes with 15% and 25% beet pulp content have been obtained. Compounding was carried out on a twin-screw extruder, and then samples of biodegradable films were obtained by cast film extrusion. The influence of the vegetable filler particles’ orientation on the composites mechanical properties has been studied. It has been shown that composites mechanical properties significantly increase in the direction of polymer melt str
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Reports on the topic "Screw melt extrusion"

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Velghe, Ineke, Bart Buffel, Veerle Vandeginste, Wim Thielemans, and Frederik Desplentere. Modelling hydrolytic, thermal, and mechanical degradation of PLA during single-screw extrusion. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.dbc.1.

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Since melt processing causes degradation of poly(lactic acid) or PLA, it is crucial to understand the effect of extrusion conditions on the molecular weight reduction. Kinetic models found in literature are promising tools to describe hydrolytic, thermal, and mechanical degradation during extrusion. In order to use these models, extrusion parameters (that are equipment dependent) should be translated into the four fundamental parameters that determine degradation: moisture content in PLA, residence time, shear stress history and temperature history. This work presents a methodology to use nume
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