Design Formulas for Plastics Engineers
Design Formulas for Plastics Engineers

Author: Natti S. Rao

Publisher:

Published: 2004

Total Pages: 184

ISBN-13:

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Although designing machines and dies for plastics processing is routinely done with the help of computer modeling and design programs, the results don't always hold up in industrial application. Therefore, it is essential for the designer to have an understanding of the underlying mathematical concepts and their limitations when working with these programs and/or trying to improve their output. This book presents a summary of the most important formulas and their applications to solve design and processing problems with plastics materials. Numerous practical examples guide the reader step-by-step through the computational routine of designing polymer machinery. The approach is unassuming and very practical to enable every engineer to apply these concepts in their daily work and improve their equipment and stabilize their processes. Contents: - Formulas of Rheology - Thermodynamic Properties - Formulas of Heat Transfer - Designing Plastics Parts - Designing Extrusion Equipment - Designing Injection Molding Equipment.

Understanding Plastics Engineering Calculations
Understanding Plastics Engineering Calculations

Author: Natti S. Rao

Publisher: Carl Hanser Verlag GmbH Co KG

Published: 2012-03-01

Total Pages: 196

ISBN-13: 3446431497

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The plastics engineer working on the shop floor in a plastics manufacturing plant often needs quick answers to questions such as why the extruder output is low or whether he can expect better quality product by changing the resin or if the die pressure can be lowered. Applying state-of-the art numerical software to address these issues is time-consuming and costly. Starting from practical design formulas which are easily applicable, and yet take the resin rheology into account, this guide provides answers to these questions quickly and effectively by guiding the user step by step through the computational procedures on the basis of illustrative technical examples. Problems related to melt fracture, homogeneity of the melt, effect of screw geometry on the quality of the melt and the effect of die pressure on the pellet surface and their troubleshooting are only few of the topics among many that are dealt with in detail. All the calculations involved can be handled by pocket calculators and hence can be performed right on the site where the machines are running. This guide is a valuable tool not only to troubleshoot but also to estimate the effect of design and process parameters on the product quality in plastics processing.

Plastics Engineered Product Design
Plastics Engineered Product Design

Author: D.V. Rosato

Publisher: Elsevier

Published: 2003-12-16

Total Pages: 588

ISBN-13: 0080514073

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• A comprehensive book which collates the experience of two well-known US plastic engineers.• Enables engineers to make informed decisions.• Includes a unique chronology of the world of plastics.The use of plastics is increasing year on year, and new uses are being found for plastics in many industries. Designers using plastics need to understand the nature and properties of the materials which they are using so that the products perform to set standards.This book, written by two very experienced plastics engineers, provides copious information on the materials, fabrication processes, design considerations and plastics performance, thus allowing informed decisions to be made by engineers.It also includes a useful chronology of the world of plastics, a resource not found elsewhere.

Understanding Plastics Engineering Calculations
Understanding Plastics Engineering Calculations

Author: Natti S. Rao

Publisher:

Published: 2012

Total Pages: 194

ISBN-13: 9781621985044

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The plastics engineer working on the shop floor in a plastics manufacturing plant often needs quick answers to questions such as why the extruder output is low or whether he can expect better quality product by changing the resin or if the die pressure can be lowered. Applying state-of-the art numerical software to address these issues is time-consuming and costly. Starting from practical design formulas which are easily applicable, and yet take the resin rheology into account, this guide provides answers to these questions quickly and effectively by guiding the user step by step through the computational procedures on the basis of illustrative technical examples. Problems related to melt fracture, homogeneity of the melt, effect of screw geometry on the quality of the melt and the effect of die pressure on the pellet surface and their troubleshooting are only few of the topics among many that are dealt with in detail. All the calculations involved can be handled by pocket calculators and hence can be performed right on the site where the machines are running. This guide is a valuable tool not only to troubleshoot but also to estimate the effect of design and process parameters on the product quality in plastics processing.

Plastics Product Design Engineering Handbook
Plastics Product Design Engineering Handbook

Author: Sidney Levy

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 346

ISBN-13: 1461325315

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Plastics have become increasingly important in the products used in our society, ranging from housing to packaging, transportation, business machines and especially in medicine and health products. Designing plastic parts for this wide range of uses has become a major activity for designers, architects, engineers, and others who are concerned with product development. Because plastics are unique materials with a broad range of proper ties they are adaptable to a variety of uses. The uniqueness of plastics stems from their physical characteristics which are as different from metals, glasses, and ceramics as these materials are different from each other. One major concern is the design of structures to take loads. Metals as well as the other materials are assumed to respond elastically and to recover completely their original shape after the load is removed. Based on this simple fact, extensive litera ture on applied mechanics of materials has been developed to enable designers to predict accurately the performance of structures under load. Many engineers depend on such texts as Timoshenko's Strength of Materials as a guide to the performance of structures. Using this as a guide, generations of engineers have designed economical and safe structural parts. Unfortunately, these design principles must be modified when designing with plastics since they do not respond elastically to stress and undergo permanent deformation with sus tained loading.

What Every Engineer Should Know about Developing Plastics Products
What Every Engineer Should Know about Developing Plastics Products

Author: Bruce Wendle

Publisher: CRC Press

Published: 1991-08-02

Total Pages: 212

ISBN-13: 9780824784850

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Covers both established methods of manipulating plastics, and innovations newly or not yet in use, explaining such aspects as the physical properties of many new polymers, methods of purchasing tooling, secondary techniques, and suggestions on how to work with design engineers to produce plastic pro