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Polymer Extrusion

Polymer Extrusion
  • Author : Chris Rauwendaal
  • Publisher :Unknown
  • Release Date :2014-01-16
  • Total pages :950
  • ISBN : 9781569905166
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Summary : Initially published "to bridge the gap between theory and practice in extrusion," this 5th edition of Polymer Extrusion continues to serve the practicing polymer engineer and chemist, providing the theoretical and the practical tools for successful extrusion operations. In its revised and expanded form, it also incorporates the many new developments in extrusion theory and machinery over the last years. Contents · Different Types of Extruders · Extruder Hardware · Instrumentation and Control · Fundamental Principles · Important Polymer Properties · Functional Process Analysis · Extruder Screw Design · Die Design · Twin Screw Extruders · Troubleshooting Extruders · Modeling and Simulation of the Extrusion Process

Polymer Extrusion

Polymer Extrusion
  • Author : Pierre G. Lafleur,Bruno Vergnes
  • Publisher :Unknown
  • Release Date :2014-05-09
  • Total pages :352
  • ISBN : 9781118827178
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Summary : Extrusion is by far the most important and the oldest processing and shaping method for thermoplastic polymers. This process concerns almost all synthetic polymers, as well as elastomers or food materials. Single-screw extrusion is mainly used nowadays to manufacture finished goods or semi-finished products. More than 90 million tons of thermoplastics are therefore processed every year. Twin-screw extrusion may be divided into two systems: contra-rotating systems used within the context of PVC extrusion, for the manufacture of pipes or profiles; and co-rotating systems experiencing nowadays a very significant development, because of their significant adaptability and flexibility, which enables the manufacture of specific materials (polymer alloys, thermoplastic elastomers, filled polymers, nanocomposites). Extrusion is carried out by passing molten polymer through a tool called die that will give the product its final shape (films and sheets, rolled products, and electric cables). Thanks to the design of dies, we obtain at the output a product with controlled dimensions, uniform speeds and homogeneous temperatures. The book will discuss the same production types, but only in the case of coextrusion flows, i.e. multilayer stratified products. First of all, we will present in this book the physics of the mechanisms at stake, then propose more or less complex models in order to describe these mechanisms and then go forward in the interpretation of results and the control of condition flows.

Extrusion of Metals, Polymers, and Food Products

Extrusion of Metals, Polymers, and Food Products
  • Author : Sayyad Zahid Qamar
  • Publisher :Unknown
  • Release Date :2018-02-28
  • Total pages :220
  • ISBN : 9789535138372
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Summary : Extrusion is a very popular manufacturing process, especially because of its versatility in terms of materials and shapes. Representing the vast and multifaceted field of extrusion, this book contains write-ups on latest developments from experts in the field. Part (A) on Metal Extrusion contains chapters on spur gear manufacturing, stiff vacuum extrusion, and indirect extrusion for subsurface tubular expansion. Part (B) on Food and Polymer Extrusion includes chapters on extrusion cooking of functional foods, changes in nutritional properties in extrusion of cereals, physicochemical changes of starch in extrusion of corn flour, extruded aquaculture feed, optimal design of polymer extrusion dies, and extrusion cooking technology for food products.

Polymer Mixing and Extrusion Technology

Polymer Mixing and Extrusion Technology
  • Author : NicholasP. Cheremisinoff
  • Publisher :Unknown
  • Release Date :2017-10-02
  • Total pages :456
  • ISBN : 9781351423496
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Summary : Addressing the two major unit operations-mixing and extrusion-fundamental toprocessing elastomers and plastic materials, this reference summarizes design equationsthat can be employed effectively in scaling up product performance parameters, andcontains a thorough survey of rheological principles. In addition, the book provides awealth of practical information, relating molecular and compositional properties ofpolymers to processing characteristics and end-use properties so that engineers can selectpolymers suitable for specific equipment as well as products.Polymer Mixing and Extrusion Technology examines viscometric techniquesand demonstrates their importance to product quality assurance ... reviews design-relatedliterature/correlations and calculation procedures for mixing and extrusion ... definesneeds and precision standards for setting up a polymer processing laboratory so thatproduct quality control can be implemented in physical testing and processing research.. . plus more.Illustrated with over 200 diagrams, tables, and photographs that facilitate readers'understanding of the processes, Polymer Mixing and Extrusion Technology isan authoritative source for plastics, polymer, and chemical engineers, manufacturers ofplastics processing equipment, and advanced undergraduate and graduate students in thesedisciplines.

The Complete Technology Book on Plastic Extrusion, Moulding And Mould Designs

The Complete Technology Book on Plastic Extrusion, Moulding And Mould Designs
  • Author : NIIR Board of Consultants and Engineers
  • Publisher :Unknown
  • Release Date :2006-10-01
  • Total pages :496
  • ISBN : 9788178330082
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Summary : Plastics extrusion is a high volume manufacturing process in which raw plastic material is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weather stripping, fence, deck railing, window frames, adhesive tape and wire insulation. There are fundamentally two different methods of extruding film, namely, below extrusion and slit die extrusion. The design and operation of the extruder up to the die is the same for both methods. The moulding process is one of the most important plastic processing operations. It is an important commercial process whereby a resinous polymeric compound is converted into useful finished articles. The origin of this process is dates back about a century to the invention of a plunger type machine. The mould has its own importance, which give the required shapes of the products. The vast growth of injection moulding is reflected dramatically in many types and sizes of equipment available today. Plastic moulding especially thermoplastic items may be produced by compression moulding methods, but since they are soft at the temperature involved, it is necessary to cool down the mould before they may be ejected. Injection moulding differs from compression moulding is that the plastic material is rendered fluid in a separate chamber or barrel, outside the mould is then forced into the mould cavity by external pressure. Plastic technology is one of the most vigorous manufacturing branches, characterised by new raw materials, changing requirements, and continuous development in processing methods. The injection moulding machines manufacturers plays an important part in the creation of injection moulding technology, process control, to essential mechanical engineering. Even though design is a specialized phase in engineering field, in tool and mould engineering it is totally divided into two wings as product design and tool and die design. This book basically deals with transport phenomena in polymer films, reinforcements for thermosets, miscellaneous thermoset processes, injection molding, blow molding, extrusion, basic principles of injection moulding, correct injection speed is necessary for filling the mould, plastic melt should not suffer degradation, the mould must be controlled for better quality product, logical consideration of moulding profile and material is important than standard setting guide lines, economical setting of the machine, proper maintenance of machine;, safety operations., preliminary checking for moulding, material, component, mould, machine, injection moulding technique, the various type of injection moulding machines, specifications, platen mounting of moulds, locating spigots, mould clamping, etc. The book covers manufacturing processes of extruded and moulded products with the various mould designs. This is very useful book for new entrepreneurs, technocrats, researchers, libraries etc.

Modelling of Polymer Extrusion

Modelling of Polymer Extrusion
  • Author : Linda Caldwell
  • Publisher :Unknown
  • Release Date :2005
  • Total pages :229
  • ISBN : OCLC:1179443988
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Polymer Extrusion

Polymer Extrusion
  • Author : Chamil Abeykoon
  • Publisher :Unknown
  • Release Date :2012
  • Total pages :140
  • ISBN : 3659132446
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Summary : Extrusion is the most fundamental method of processing of polymeric materials and it is involved in the production of commodities in diverse industrial sectors. Obviously, the thermal homogeneity of the process melt output presents a major challenge for high quality extruded products. However, the effective thermal monitoring and control still remains an issue despite the significant developments to the process over the last few decades. Therefore, the major aim of this book is to provide an extensive knowledge to the reader in the area of process thermal measurements (e.g. present thermal monitoring techniques, previous attempts on thermal monitoring, difficulties/challenges for accurate thermal measurements, areas on which further research should be carried out) in polymer extrusion. Moreover, this book will provide a good description on the basic process mechanisms in polymer extrusion while offering a large number of references for further reading of the interested parties. Basically, this book was written for the use of both industrial and academic users and hence both the theoretical and experimental information are presented for the better understanding of any reader.

Polymer Processing and Structure Development

Polymer Processing and Structure Development
  • Author : Arthur N. Wilkinson,A.J. Ryan
  • Publisher :Unknown
  • Release Date :1998-07-31
  • Total pages :577
  • ISBN : 0751403636
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Summary : Polymer science is fundamentally interdisciplinary, yet specialists in one aspect, such as chemistry or processing, frequently encounter difficulties in understanding the effects of other disciplines on their own. This book describes clearly how polymer chemistry and polymer processing interact to affect polymer properties. As such, specialists in both disciplines can gain a deeper understanding of how these subjects underpin each other. Coverage includes step-by-step introductions to polymer processing technologies; details of fluid flow and heat transfer behaviour; shaping methods and physical processes during cooking and curing, and analyses of moulding and extrusion processes.

Mathematical Modelling for Polymer Processing

Mathematical Modelling for Polymer Processing
  • Author : Vincenzo Capasso
  • Publisher :Unknown
  • Release Date :2003
  • Total pages :320
  • ISBN : 3540434127
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Summary : A large amount of relevant mathematical problems arise from the polymer industry with respect to the quality of manufactured polymer parts. This book provides the first unified presentation of the mathematical modeling of polymerization, crystallization and extrusion of polymer melts, by means of advanced methods, presented in an accessible way for applied scientists and engineers.

Polymer Blends

Polymer Blends
  • Author : L.A. Utracki
  • Publisher :Unknown
  • Release Date :2000
  • Total pages :170
  • ISBN : 1859572308
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Summary : This report begins by summarising the basis of polymer blending. This includes an outline of the techniques being used to characterise blends including spectroscopic techniques and rheometry. The types of polymer blends which have been studied are outlined. Methods of compatibilisation are discussed. The morphology of the phases in a blend is critical to property development - the types of morphology observed are described. Flow-induced morphology is described. Processing of blends and the effects on morphology are discussed including extrusion, thermoforming, blow moulding, injection moulding and foaming. The accompanying abstracts from the Rapra Polymer Library database provide useful further information and indicate sources of additional material.

Extrusion

Extrusion
  • Author : Harold F. Giles Jr,John R. Wagner, Jr.,Eldridge M. Mount
  • Publisher :Unknown
  • Release Date :2013-09-21
  • Total pages :636
  • ISBN : 9781437734829
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Summary : The second edition of Extrusion is designed to aid operators, engineers, and managers in extrusion processing in quickly answering practical day-to-day questions. The first part of the book provides the fundamental principles, for operators and engineers, of polymeric materials extrusion processing in single and twin screw extruders. The next section covers advanced topics including troubleshooting, auxiliary equipment, and coextrusion for operators, engineers, and managers. The final part provides applications case studies in key areas for engineers such as compounding, blown film, extrusion blow molding, coating, foam, and reprocessing. This practical guide to extrusion brings together both equipment and materials processing aspects. It covers basic and advanced topics, for reference and training, in thermoplastics processing in the extruder. Detailed reference data are provided on such important operating conditions as temperatures, start-up procedures, shear rates, pressure drops, and safety. A practical guide to the selection, design and optimization of extrusion processes and equipment Designed to improve production efficiency and product quality Focuses on practical fault analysis and troubleshooting techniques

Screws for Polymer Processing

Screws for Polymer Processing
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1995
  • Total pages :229
  • ISBN : 185957047X
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Cellular Polymers IV

Cellular Polymers IV
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1997
  • Total pages :144
  • ISBN : 1859570976
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Summary :

Mechanical and Thermophysical Properties of Polymer Liquid Crystals

Mechanical and Thermophysical Properties of Polymer Liquid Crystals
  • Author : Witold Brostow
  • Publisher :Unknown
  • Release Date :1998-02-28
  • Total pages :520
  • ISBN : 0412609002
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Summary : may never overcome the effects of hysteresis and stress (see Chapters 6 and 12). The first sentence of the reference work, Handbook of Liquid Crystals, reads: The terms liquid crystals, crystalline liquid, mesophase, and mesomorphous state are used synonymously to describe a state of aggregation that exhibits a molecular order in a size range similar to that of a crystal but acts more or less as a viscous liquid: [2] In other words, molecules within a liquid crystalline phase possess some orientational order and lack positional order; furthermore, the shape of a liquid crystalline sample is determined by the vessel in which it is contained rather than by the orientational order of its aggregated molecules. The authors recognized the limitations and imprecision of this definition but, like others preceding them, could not devise a simple and generally applicable one that is better. Regardless, the terms 'liquid crystal' and 'mesophase' should not be used interchangeably. As mentioned above, all liquid crystals are mesophases, but all mesophases are not liquid crystals. Recent studies, employing elaborate and sophisticated analytical techniques, have permitted finer distinctions between classical crystals and mesophases. At the same time, they have made definitions like that from the Handbook of Liquid Crystals somewhat obsolete for reasons other than terminology. One part of the problem arises from the use of a combination of bulk properties (like flow) and microscopic properties (like molecular ordering) within the same definition.

Screws for Polymer Processing II

Screws for Polymer Processing II
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1998
  • Total pages :48
  • ISBN : 1859571395
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Pharmaceutical Polymers 2007

Pharmaceutical Polymers 2007
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2007
  • Total pages :229
  • ISBN : 1847350178
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Polymer Extrusion

Polymer Extrusion
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1979
  • Total pages :229
  • ISBN : LCCN:81110334
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Summary :

Thermal Degradation of Polymeric Materials

Thermal Degradation of Polymeric Materials
  • Author : Krzysztof Pielichowski,James Njuguna
  • Publisher :Unknown
  • Release Date :2005
  • Total pages :306
  • ISBN : 185957498X
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Summary : Understanding the thermal degradation of polymers is of paramount importance for developing a rational technology of polymer processing and higher-temperature applications. Controlling degradation requires understanding of many different phenomena, including chemical mechanisms, the influence of polymer morphology, the complexities of oxidation chemistry, and the effects of stabilisers, fillers and other additives. This book offers a wealth of information for polymer researchers and processors requiring an understanding of the implications of thermal degradation on material and product performance.

Studies on Polymer Alloying Using Reactive Extrusion

Studies on Polymer Alloying Using Reactive Extrusion
  • Author : Dimitrios Christos Argyropoulos
  • Publisher :Unknown
  • Release Date :1997
  • Total pages :306
  • ISBN : MSU:31293017069810
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Summary :

Handbook of Polymer Synthesis, Characterization, and Processing

Handbook of Polymer Synthesis, Characterization, and Processing
  • Author : Enrique Saldivar-Guerra,Eduardo Vivaldo-Lima
  • Publisher :Unknown
  • Release Date :2013-02-28
  • Total pages :644
  • ISBN : 9781118480779
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Summary : Covering a broad range of polymer science topics, Handbook of Polymer Synthesis, Characterization, and Processing provides polymer industry professionals and researchers in polymer science and technology with a single, comprehensive handbook summarizing all aspects involved in the polymer production chain. The handbook focuses on industrially important polymers, analytical techniques, and formulation methods, with chapters covering step-growth, radical, and co-polymerization, crosslinking and grafting, reaction engineering, advanced technology applications, including conjugated, dendritic, and nanomaterial polymers and emulsions, and characterization methods, including spectroscopy, light scattering, and microscopy.

Melt Extrusion

Melt Extrusion
  • Author : Michael A. Repka,Nigel Langley,James DiNunzio
  • Publisher :Unknown
  • Release Date :2013-10-11
  • Total pages :474
  • ISBN : 9781461484325
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Summary : This volume provides readers with the basic principles and fundamentals of extrusion technology and a detailed description of the practical applications of a variety of extrusion processes, including various pharma grade extruders. In addition, the downstream production of films, pellets and tablets, for example, for oral and other delivery routes, are presented and discussed utilizing melt extrusion. This book is the first of its kind that discusses extensively the well-developed science of extrusion technology as applied to pharmaceutical drug product development and manufacturing. By covering a wide range of relevant topics, the text brings together all technical information necessary to develop and market pharmaceutical dosage forms that meet current quality and regulatory requirements. As extrusion technology continues to be refined further, usage of extruder systems and the array of applications will continue to expand, but the core technologies will remain the same.