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Author: Jerry Fischer Publisher: William Andrew ISBN: 1455730572 Category : Technology & Engineering Languages : en Pages : 289
Book Description
How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means that the size is always different; warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal specifically with this fundamental problem. Jerry Fischer’s Handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and explains why you never can have a single ‘correct’ shrinkage value. It goes on to demonstrate how to alleviate the problem through careful design of the molded part and the mold, and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the Handbook gives you the data you need to work with. Authoritative and rooted in extensive industrial experience, the expert guidance contained in this handbook offers practical understanding to novices, and new insights to readers already skilled in the art of injection molding and mold making Contains the answers to common problems and detailed advice on how to control mold and post-mold shrinkage and warpage Case Studies illustrate and enrich the text; Data tables provide the empirical data that is essential for success, but hard to come by
Author: Jerry Fischer Publisher: William Andrew ISBN: 1455730572 Category : Technology & Engineering Languages : en Pages : 289
Book Description
How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means that the size is always different; warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal specifically with this fundamental problem. Jerry Fischer’s Handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and explains why you never can have a single ‘correct’ shrinkage value. It goes on to demonstrate how to alleviate the problem through careful design of the molded part and the mold, and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the Handbook gives you the data you need to work with. Authoritative and rooted in extensive industrial experience, the expert guidance contained in this handbook offers practical understanding to novices, and new insights to readers already skilled in the art of injection molding and mold making Contains the answers to common problems and detailed advice on how to control mold and post-mold shrinkage and warpage Case Studies illustrate and enrich the text; Data tables provide the empirical data that is essential for success, but hard to come by
Author: Dominick V. Rosato Publisher: Springer Science & Business Media ISBN: 9780792386193 Category : Science Languages : en Pages : 1500
Book Description
Provides reference information concerning the injection molding operation and each of its aspects. It examines considerable technological advancements, especially those in computer methods, that have been made since the second edition was published.
Author: Mehdi Moayyedian Publisher: Springer ISBN: 3030033562 Category : Technology & Engineering Languages : en Pages : 159
Book Description
This book describes an effective framework for setting the right process parameters and new mold design to reduce the current plastic defects in injection molding. It presents a new approach for the optimization of injection molding process via (i) a new mold runner design which leads to 20 percent reduction in scrap rate, 2.5 percent reduction in manufacturing time, and easier ejection of injected part, (ii) a new mold gate design which leads to less plastic defects; and (iii) the introduction of a number of promising alternatives with high moldability indices. Besides presenting important developments of relevance academic research, the book also includes useful information for people working in the injection molding industry, especially in the green manufacturing field.
Author: Alphose Zingoni Publisher: CRC Press ISBN: 0429761163 Category : Technology & Engineering Languages : en Pages : 2435
Book Description
Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications comprises 411 papers that were presented at SEMC 2019, the Seventh International Conference on Structural Engineering, Mechanics and Computation, held in Cape Town, South Africa, from 2 to 4 September 2019. The subject matter reflects the broad scope of SEMC conferences, and covers a wide variety of engineering materials (both traditional and innovative) and many types of structures. The many topics featured in these Proceedings can be classified into six broad categories that deal with: (i) the mechanics of materials and fluids (elasticity, plasticity, flow through porous media, fluid dynamics, fracture, fatigue, damage, delamination, corrosion, bond, creep, shrinkage, etc); (ii) the mechanics of structures and systems (structural dynamics, vibration, seismic response, soil-structure interaction, fluid-structure interaction, response to blast and impact, response to fire, structural stability, buckling, collapse behaviour); (iii) the numerical modelling and experimental testing of materials and structures (numerical methods, simulation techniques, multi-scale modelling, computational modelling, laboratory testing, field testing, experimental measurements); (iv) innovations and special structures (nanostructures, adaptive structures, smart structures, composite structures, bio-inspired structures, shell structures, membranes, space structures, lightweight structures, long-span structures, tall buildings, wind turbines, etc); (v) design in traditional engineering materials (steel, concrete, steel-concrete composite, aluminium, masonry, timber, glass); (vi) the process of structural engineering (conceptualisation, planning, analysis, design, optimization, construction, assembly, manufacture, testing, maintenance, monitoring, assessment, repair, strengthening, retrofitting, decommissioning). The SEMC 2019 Proceedings will be of interest to civil, structural, mechanical, marine and aerospace engineers. Researchers, developers, practitioners and academics in these disciplines will find them useful. Two versions of the papers are available. Short versions, intended to be concise but self-contained summaries of the full papers, are in this printed book. The full versions of the papers are in the e-book.
Author: Johannes Karl Fink Publisher: John Wiley & Sons ISBN: 1119795796 Category : Technology & Engineering Languages : en Pages : 416
Book Description
This book focuses on plastics process analysis, instrumentation for modern manufacturing in the plastics industry. Process analysis is the starting point since plastics processing is different from processing of metals, ceramics, and other materials. Plastics materials show unique behavior in terms of heat transfer, fluid flow, viscoelastic behavior, and a dependence of the previous time, temperature and shear history which determines how the material responds during processing and its end use. Many of the manufacturing processes are continuous or cyclical in nature. The systems are flow systems in which the process variables, such as time, temperature, position, melt and hydraulic pressure, must be controlled to achieve a satisfactory product which is typically specified by critical dimensions and physical properties which vary with the processing conditions. Instrumentation has to be selected so that it survives the harsh manufacturing environment of high pressures, temperatures and shear rates, and yet it has to have a fast response to measure the process dynamics. At many times the measurements have to be in a non-contact mode so as not to disturb the melt or the finished product. Plastics resins are reactive systems. The resins will degrade if the process conditions are not controlled. Analysis of the process allows one to strategize how to minimize degradation and optimize end-use properties.
Author: Michael L. Berins Publisher: Springer Science & Business Media ISBN: 1461576040 Category : Science Languages : en Pages : 1139
Book Description
I am pleased to present the Fifth Edition of the Plastics Engineering Handbook. Last published in 1976, this version of the standard industry reference on plastics processing incorporates the numerous revisions and additions necessitated by 14 years of activity in a dynamic industry. At that last printing, then-SPI President Ralph L. Harding, Jr. anticipated that plastics pro duction would top 26 billion pounds in 1976 (up from 1.25 billion in 1947, when the First Edition of this book was issued). As I write, plastics production in the United States had reached almost 60 billion pounds annually. Indeed, the story of the U.S. plastics industry always has been one of phenomenal growth and unparalleled innovation. While these factors make compilation of a book such as this difficult, they also make it necessary. Thus I acknowledge all those who worked to gather and relate the information included in this 1991 edition and thank them for the effort it took to make the Plastics Engineering Handbook a definitive source and invaluable tool for our industry. Larry L. Thomas President The Society of the Plastics Industry, Inc.
Author: Sina Ebnesajjad Publisher: William Andrew ISBN: 0815517297 Category : Technology & Engineering Languages : en Pages : 593
Book Description
This is a self-contained collection of data and information on applications of fluoropolymers components for corrosion control in chemical processing industries. Due to their superior properties, fluoropolymers have been rapidly replacing metal alloys for preserving the purity of processing streams in the chemical processing, plastics, food, pharmaceutical, semiconductor, and pulp and paper industries.
Author: Mark A. Spalding Publisher: John Wiley & Sons ISBN: 1119159784 Category : Technology & Engineering Languages : en Pages : 1382
Book Description
This handbook provides an exhaustive description of polyethylene. The 50+ chapters are written by some of the most experienced and prominent authors in the field, providing a truly unique view of polyethylene. The book starts with a historical discussion on how low density polyethylene was discovered and how it provided unique opportunities in the early days. New catalysts are presented and show how they created an expansion in available products including linear low density polyethylene, high density polyethylene, copolymers, and polyethylene produced from metallocene catalysts. With these different catalysts systems a wide range of structures are possible with an equally wide range of physical properties. Numerous types of additives are presented that include additives for the protection of the resin from the environment and processing, fillers, processing aids, anti-fogging agents, pigments, and flame retardants. Common processing methods including extrusion, blown film, cast film, injection molding, and thermoforming are presented along with some of the more specialized processing techniques such as rotational molding, fiber processing, pipe extrusion, reactive extrusion, wire and cable, and foaming processes. The business of polyethylene including markets, world capacity, and future prospects are detailed. This handbook provides the most current and complete technology assessments and business practices for polyethylene resins.
Author: George Wypych Publisher: Elsevier ISBN: 0323898955 Category : Technology & Engineering Languages : en Pages : 1185
Book Description
Handbook of Fillers, Fifth Edition discusses the rapidly advancing field of fillers, the substances added to plastics and composites that add value by improving and modifying the properties of materials and reducing costs. This new edition is an essential reference for engineers and scientists using fillers in a range of materials, including plastics, rubber, adhesives, and paper. Designed to be a comprehensive reference for both experienced practitioners and those new to the field, it covers available fillers and their properties, their effect on filled materials, their rheology and flammability, recycling considerations, and their use in practical applications. The book offers a direct comparison of general-purpose fillers (micron-size fillers) and nanofillers. The first section covers the grades of fillers available in the world market, dividing them into eight groups and analyzing their properties, applications, and sources. The second section discusses the effects of filler incorporation with ten chapters covering the mechanical properties of compounded materials, the effect of the filler on the material rheology, the morphology of the filled system, the material durability, flammability and recycling, the structure of interphase, chemical interphase, chemical interactions, interaction with and effect on other additive, fillers use in material compounds, and the analytical methods of testing fillers and filled materials. The final section is devoted to the application of fillers on an industrial scale. Filler transportation, storage, processing, and equipment used for these purposes are discussed, as are quality control of fillers, formulation with fillers, different processing methods, and health and safety issues. - Synthesizes the literature on fillers, covering their properties, effects on filled materials, rheology, flammability, and more - Provides up-to-date, applicable information on the use of fillers in plastics, rubber, adhesives, and paper - Presents comprehensive coverage on the effect of fillers on materials, including their mechanical properties, their effects on material rheology, the morphology of the filled system, material durability, and more - Includes essential guidance on the industrial scale use of fillers and their transportation, storage, processing, equipment, quality control, and health and safety considerations
Author: Harutun Karian Publisher: CRC Press ISBN: 1135543356 Category : Technology & Engineering Languages : en Pages : 952
Book Description
Building on the success of its predecessor with completely revised material and six new chapters, the Handbook of Polypropylene and Polypropylene Composites, Second Edition responds to increasing interest and changing global trends in the manufacture and application of polypropylene resin. The authors highlight viable options for the manufacture of
Author: Jerry Fischer
Author: Jerry Fischer
Author: Dominick V. Rosato
Author: Mehdi Moayyedian
Author: Alphose Zingoni
Author: Johannes Karl Fink
Author: Michael L. Berins
Author: Sina Ebnesajjad
Author: Mark A. Spalding
Author: George Wypych
Author: Harutun Karian