Extrusion Die Design for a Novel Copolymer PDF Download
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Author: G. D. Wells
Publisher:
ISBN:
Category :
Languages : en
Pages : 740
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Book Description
Author: G. D. Wells
Publisher:
ISBN:
Category :
Languages : en
Pages : 740
Get Book Here
Book Description
Author: Graham David Wells
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The development of a proven scientific method for the design of calibration dies for the extrusion processing of semi-crystalline polymers has received very little, if any, attention in the past. Previously processing manufacturers have relied upon trial and error techniques coupled with hard gained experience acquired over a number of years. This method of approach was unacceptable to Railko Ltd. for the processing of their oiled acetal copolymer material, designated PV80. This was mainly due to their inexperience in the field of work coupled with the urgency required in launching this material into the market in various forms and sizes. The need for a proven scientific method for the design of extrusion dies was apparent and of paramount importance. This thesis describes a method for the design of rod, tube, and slab dies. The mathematical model developed uses .a 'Lumped Parameter Finite Difference Technique' for the solution of the energy equation. This model allows for the inclusion of the polymers thermal properties with temperature together with flow properties of the polymer melt. Due to the lack of data available on PV80 these properties were obtained experimentally and therefore represent an integral part of the whole project. Typical processing conditions, which were obtained from an extensive and comprehensive experimental programme using a fully instrumented research die and modified production dies have also been allowed for in the mathematical model. The validity of the model has been proven experimentally by means of the fully instrumented research die and the successful design of a number of production dies that are currently in use. The experimental work also provided the opportunity to investigate possible remedies to existing production processing problems and hence enabling the formulation of processing guide lines. Finally, it has been shown by macroscopic and microscopic examination of a number of experimentally obtained extruded samples that the materials bearing characteristics are not dependent upon the processing conditions.
Author: Christian Hopmann
Publisher: Carl Hanser Verlag GmbH Co KG
ISBN: 1569906815
Category : Technology & Engineering
Languages : en
Pages : 479
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Book Description
This definitive book provides a comprehensive account of the full range of dies used for extrusion of plastics and elastomers. The distinctive features of the various types of dies are described in detail. Expert advice on the configuration of dies is given, and the possibilities of computer-aided design, as well as its limitations, are demonstrated. Fundamentals and computational procedures are clearly explained so that no special prior knowledge of the subject is required. The mechanical configuration, handling, and maintenance of extrusion dies are described. Calibration procedures for pipes and profiles are also discussed. This book was written for plastics engineers who need daily support in their practical work in industry and science, as well as for students preparing for their professional life. The 4th edition is brought up to date with several important additions, including coverage of multilayer (>15 layer) dies, melt encapsulation, and simulation tools (rheological/thermal CFD simulations).
Author: Olga Carneiro
Publisher: Smithers Rapra
ISBN: 1847355196
Category : Science
Languages : en
Pages : 306
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Book Description
The design of extrusion forming tools (dies and calibrators) is a difficult task usually performed by the employment of experimental trial-and-error procedures, which can hinder the performance and cost of the tools, may increase the time to market of new extruded products and limit their complexity.This book provides detailed information on the design of extrusion forming tools. It describes the main problems to be faced when designing dies and calibrators, the most relevant polymer properties to be considered in the design process, the specific problems related to several types of conventional extrusion dies, and recent developments on the design of special dies and process modeling. It is an updated and unique book on the subject, where each chapter is prepared by internationally recognized experts. Having in mind its nature, it is expected to become a useful reference book for higher education students (both undergraduate and graduate ones), teachers, researchers and engineers active in the extrusion industry.
Author: Chris Rauwendaal
Publisher: Carl Hanser Verlag GmbH Co KG
ISBN: 1569905169
Category : Technology & Engineering
Languages : en
Pages : 952
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Book Description
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
Author: Walter Michaeli
Publisher: Hanser Gardner Publications
ISBN: 9781569903490
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 362
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Book Description
The third edition of this well-received book provides a comprehensive account of the full range of dies used for extrusion of plastics and elastomers. The distinctive features of the various types of dies are described in detail. Advice on the configuration of dies is given, and the possibilities of computer-aided design, as well as its limitations, are demonstrated. The fundamentals and computational procedures are well explained so that the reader does not need any special prior knowledge of the subject. The mechanical configuration, handling, and maintenance of extrusion dies are described. Calibration procedures for pipes and profiles are also dealt with. This book was written for plastics engineers who need daily support in their practical work in industry and science as well for students preparing for their professional life.
Author: Sayyad Zahid Qamar
Publisher: BoD – Books on Demand
ISBN: 9535138375
Category : Technology & Engineering
Languages : en
Pages : 222
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Book Description
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.
Author: Sidney Levy
Publisher: Industrial Press Inc.
ISBN: 9780831111854
Category : Technology & Engineering
Languages : en
Pages : 404
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Book Description
Offering complete and in-depth data and information on plastics extrusion, this practical handbook presents the technology of the subject rather than the theory. Presents an overview of extrusion technology as applied to the operation of extrusion systems and the design of tooling and equipment for use in the process. Provides basic technical information on the behavior of polymer and plastics materials in the extrusion process. Contains tool descriptions that provide a basis for the analysis of existing product lines as examples for the design of new systems. Includes illustrations of and background material on control systems for the extruder and extrusion process. Fundamentals of the Extrusion Process. Extruder Design, Construction and Operation. Extrusion Dies for Specific Product Lines. Controlling the Extrusion Process. Heat Transfer and Heat Content Considerations. Downstream Equipment and Auxiliary Units for Extrusion Lines. Coextrusion and Dual-Extrusion Technology. Extrusion of Cellular Plastics Products. Extrusion System Design and Integration. On-Line and Computer Control of the Extrusion Process. Plant Design and Operations. Extrusion Products and Processes. Glossary. Index.
Author: Olga S. Carneiro
Publisher:
ISBN: 9781628705096
Category : Electronic books
Languages : en
Pages : 314
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Book Description
The design of extrusion forming tools (dies and calibrators) is a difficult task usually performed by the employment of experimental trial-and-error procedures, which can hinder the performance and cost of the tools, may increase the time to market of new extruded products and limit their complexity. This book provides detailed information on the design of extrusion forming tools. It describes the main problems to be faced when designing dies and calibrators, the most relevant polymer properties to be considered in the design process, the specific problems related to several types of convention.
Author: Madiajagane Rathinavelu
Publisher:
ISBN:
Category : Extrusion process
Languages : en
Pages : 216
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Book Description
