Technology & Engineering

Injection Moulding Materials

Author: A. Whelan

Publisher: Springer

ISBN:

Category: Technology & Engineering

Page: 398

View: 333

In order to make the subject manageable the term 'injection moulding' has been restricted in its use so that only those processes which rely on thermal softening of the polymeric materials have been described and discussed in this book. It is intended to discuss the subject of reaction injection moulding in a separate book. However, even with this omission, the subject is still a very large one as nowadays many sorts or types of polymers are injection moulded. For example, it is estimated that one-third of all plastics materials are injection moulded-the range of products produced is enormous and increases daily. Because most moulding materials are based on plastics, in particular thermoplastics, the materials guides which form a large part of this book concentrate on the moulding of thermoplastics materials. Such guides should only be treated as general guidelines as each of the materials is normally available in a wide range of grades. These may differ in polymer molecular weight, molecular weight distribution, the additives used and their concentration, the physical form of the moulding compound, etc. A wide range of processing behaviours and end-use properties is therefore possible from any of the materials listed. This versatility is typified by the rubbery polymers which are compounded into an incredibly wide range of compounds. Because of this versatility only a very general guideline has been given for such materials.
Technology & Engineering

Plastic Injection Molding: Material Selection and Product Design Fundamentals

Author: Douglas M. Bryce

Publisher: Society of Manufacturing Engineers

ISBN:

Category: Technology & Engineering

Page: 380

View: 149

The second book in the Plastic Injection Molding series addresses the basics and the fine points of plastics materials and product design phases of the thermoplastic injection molding process. Complex technical matter is presented in clear, sequential narrative bites.
Technology & Engineering

Injection Molding of Thermoplastic Materials - 2

Author: John Goff

Publisher: Springer Science & Business Media

ISBN:

Category: Technology & Engineering

Page: 189

View: 800

Over the years 1984 to 1989, we published a series of articles on the molding of thermoplastics, and of thermosetting materials, in the monthly magazine British Plastics and Rubber (B P & R). These articles were very well received and we also received a large number of requests for reprints. The articles were also translated into languages other than English. In order to cater for what is obviously a need in both the ther moplastics, and the thermosetting, molding industries, we there fore brought the information together and produced it in book form. To make the material easier to handle we produced it in the form of several books and this is one of them. We can only hope that the information so presented, serves you well and that you find the information useful. We in turn would like to thank the editor of the magazine B P & R for helping us in this matter. Thanks are also due to our many friends and colleagues throughout the molding industry for their useful help and advice: in particular, the company Moldflow (Europe) limited deserve a special mention as they allowed us to extract information from their extensive data base.
Science

ARBURG Practical Guide to Injection Moulding

Author: Vannessa Goodship

Publisher: Smithers Rapra

ISBN:

Category: Science

Page: 380

View: 875

This book details the factors involved in the injection moulding process, from material properties and selection to troubleshooting faults, and includes the equipment types currently in use and machine settings for different types of plastics. Material flow is a critical parameter in moulding and there are sections covering rheology and viscosity. High temperature is also discussed as it can lead to poor quality mouldings due to material degradation.The text is supported by 74 tables, many of which list key properties and processing parameters, and 233 figures; there are also many photographs of machinery and mouldings to illustrate key points. Troubleshooting flow charts are also included to indicate what should be changed to resolve common problems.Injection moulding in the Western World is becoming increasingly competitive as the manufacturing base for many plastic materials has moved to the East. Thus, Western manufacturers have moved into more technically difficult products and mouldings to provide enhanced added value and maintain market share. Technology is becoming more critical, together with innovation and quality control. There is a chapter on advanced processing in injection moulding covering multimaterial and assisted moulding technologies. This guide will help develop good technical skills and appropriate processing techniques for the range of plastics and products in the marketplace.Every injection moulder will find useful information in this text, in addition, this book will be of use to experts looking to fill gaps in their knowledge base as well as those new to the industry.ARBURG has been manufacturing injection moulding machines since 1954 and is one of the major global players. The company prides itself on the support offered to clients, which is exemplified in its training courses. This book is based on some of the training material and hence is based on years of experience.
Technology & Engineering

Injection Moulding Materials

Author: A. Whelan

Publisher: Springer Science & Business Media

ISBN:

Category: Technology & Engineering

Page: 398

View: 863

In order to make the subject manageable the term 'injection moulding' has been restricted in its use so that only those processes which rely on thermal softening of the polymeric materials have been described and discussed in this book. It is intended to discuss the subject of reaction injection moulding in a separate book. However, even with this omission, the subject is still a very large one as nowadays many sorts or types of polymers are injection moulded. For example, it is estimated that one-third of all plastics materials are injection moulded-the range of products produced is enormous and increases daily. Because most moulding materials are based on plastics, in particular thermoplastics, the materials guides which form a large part of this book concentrate on the moulding of thermoplastics materials. Such guides should only be treated as general guidelines as each of the materials is normally available in a wide range of grades. These may differ in polymer molecular weight, molecular weight distribution, the additives used and their concentration, the physical form of the moulding compound, etc. A wide range of processing behaviours and end-use properties is therefore possible from any of the materials listed. This versatility is typified by the rubbery polymers which are compounded into an incredibly wide range of compounds. Because of this versatility only a very general guideline has been given for such materials.
Technology & Engineering

Injection Molding

Author: Musa R. Kamal

Publisher: Carl Hanser Verlag GmbH Co KG

ISBN:

Category: Technology & Engineering

Page: 950

View: 945

This book attempts to survey the state of the science and technology of the injection molding process. It represents a comprehensive, balanced mix of practical and theoretical aspects for a wide range of injection molding applications. The authors of the 21 chapters are experts and leaders in their respective areas of specialization in the injection molding field. While it is not possible to cover all aspects of such a dynamic growing field, we hope that the reader will find sufficient information and background to become acquainted, at various levels of depth, with key components of the science and technology of injection molding. Contents: Injection Molding: Introduction and General Background Injection Molding Machines, Tools, and Processes The Plasticating System for Injection Molding Machines Non-Conventional Injection Molds Gas Assisted Injection Molding Water Injection Techniques (WIT) Flow Induced Fiber Micro-Structure in Injection Molding of Fiber Reinforced Materials Injection Foam Molding Powder Metal Injection Molding Micro Injection Molding Internal Visualization of Mold Cavity and Heating Cylinder Injection Molding Control Optimal Design for Injection Molding Development of Injection Molding Simulation Three-Dimensional Injection Molding Simulation Viscoelastic Instabilities in Injection Molding Evolution of Structural Hierarchy in Injection Molded Semicrystalline Polymers Modeling Aspects of Post-Filling Steps in Injection Molding Volumetric and Anisotropic Shrinkage in Injection Moldings of Thermoplastics Three-Dimensional Simulation of Gas-Assisted and Co-Injection Molding Processes Co-Injection Molding of Polymers

Plastic Injection Moulding Raw Materials

Author: Hai Salser

Publisher:

ISBN:

Category:

Page: 128

View: 730

Injection molding) is a manufacturing process for producing parts by injecting molten material into a mold, or mold. Injection molding can be performed with a host of materials mainly including metals (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mold cavity, where it cools and hardens to the configuration of the cavity. This book may give you: Injection Molding Process: What Is The Injection Molding Process? Plastic Injection Moulding Raw Materials: What Are The Types Of Injection Moulding? Plastic Injection Molding Machine: What Is Injection Molding Used For?
Science

Multi-Material Injection Moulding

Author: V. Goodship

Publisher: iSmithers Rapra Publishing

ISBN:

Category: Science

Page: 116

View: 539

Many variations of injection moulding have been developed and one of the rapidly expanding fields is multi-material injection moulding. This review looks at the many techniques being used, from the terminology to case studies. The three primary types of multi-material injection moulding examined are multi-component, multi-shot and over-moulding. The basic types of multi-material injection moulding, the issues surrounding combining different types of polymers and examples of practical uses of this technology are described.
Science

Developments in Injection Moulding—1

Author: A. Whelan

Publisher: Springer

ISBN:

Category: Science

Page: 283

View: 819

Injection moulding is the most important moulding process used by the plastics industry and some idea of its importance can be obtained by considering the following figures. The value of the UK market for plastics processing equipment was £60 million in 1977. Of this sum, £23 million was spent on injection moulding machines, that is, 40 % of all the money spent on plastics processing equipment in the UK. It has been estimated that one-third of all plastics materials are processed by injection moulding. At the present time the process is of greater importance to the thermoplastics industry but its relevance to the thermoset industry should not be ignored. Most ofthe equipment now used is based on single-screw pre-plasticising units. Once these machines had become established, in the 1960s, it was felt that the ultimate had been reached in machine design and utilisation. However, since that time, machines, processes and materials have undergone extensive development to make injection moulding safer, more reliable, easier to use and more economical to operate. The purpose ofthis book is to review some of the developments that have taken place in this very important area. These developments are described by specialists in the field, who have extensive industrial experience and whose contribution will therefore be of immediate relevance to those concerned with the usage and application of this, the most important plastics moulding process.
Technology & Engineering

Injection Molding of Thermoplastics Materials - 1

Author: John Goff

Publisher: Springer Science & Business Media

ISBN:

Category: Technology & Engineering

Page: 167

View: 482

During the years 1987 and 1988 we published a series of articles on the molding of thermoplastics materials in the magazine British Plastics and Rubber (B P & R). These articles were very well received and we also received a large number of requests for reprints. In order to cater for what is obviously a need in the thermoplas tics molding industry, we therefore brought the information together and produced it in the form of a book. We can only hope that it serves you well and that you find the information useful. We in turn would like to thank the editor of the magazine B P & R for helping us in this matter. Thanks are also due to our many friends and colleagues throughout the molding industry for their useful help and advice, in particular the company Moldflow (Europe) Limited deserve a special mention as they allowed us to extract information from their extensive data base.
Science

Troubleshooting Injection Moulding

Author: Vannessa Goodship

Publisher: iSmithers Rapra Publishing

ISBN:

Category: Science

Page: 138

View: 237

Annotation Injection moulding is one of the most commonly used processing technologies for plastics materials. Proper machine set up, part and mould design, and material selection can lead to high quality production. This review outlines common factors to check when preparing to injection mould components, so that costly mistakes can be avoided. This review examines the different types of surface defects that can be identified in plastics parts and looks at ways of solving these problems. Useful flow charts to illustrate possible ways forward are included. Case studies and a large b257 of figures make this a very useful report.

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

Author: NIIR Board of Consultants and Engineers

Publisher: ASIA PACIFIC BUSINESS PRESS Inc.

ISBN:

Category:

Page: 496

View: 232

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.
Technology & Engineering

Precision Injection Molding

Author: Jehuda Greener

Publisher: Hanser Gardner Publications

ISBN:

Category: Technology & Engineering

Page: 328

View: 308

One of the key aspects of the production of high precision components is the need to meet extremely tight dimensional tolerances, typically in the submicron range, and maintain these tolerances over the practical lifetimes of the molded articles. In addition, as many of the precision components are utilized in various optoelectronic systems and devices, control of optical and electrical properties is often crucial. The strict control of dimensional and electro-optical properties requires a systematic reexamination of the conventional injection-molding process with special consideration of its impact on the dimensions and electro-optical characteristics of the molded article. This volume examines precision injection molding from different perspectives, covering materials, process and hardware aspects of the technology, with special emphasis on the dimensional integrity and stability of the molded components. Special topics covered in this volume include: dimensional stability of molded plastics, models for warpage development, compact disc molding, process control, crystallization phenomena in injection molding, micro-molding and microfluidics.
Injection molding of plastics

Plastics

Author: International Organization for Standardization

Publisher:

ISBN:

Category: Injection molding of plastics

Page: 3

View: 379

Science

Injection Moulding

Author: Vannessa Goodship

Publisher: Walter de Gruyter GmbH & Co KG

ISBN:

Category: Science

Page: 416

View: 446

This revised 3rd edition details the factors involved in the injection moulding process, from material properties and selection to troubleshooting faults, and includes the equipment types currently in use and machine settings for different types of plastics. Since material flow is critical in moulding, the book covers rheology and viscosity. High temperature is also discussed as it can lead to poor quality mouldings due to material degradation.
Technology & Engineering

Injection Molding Handbook

Author: D.V. Rosato

Publisher: Springer Science & Business Media

ISBN:

Category: Technology & Engineering

Page: 1460

View: 383

This third edition has been written to thoroughly update the coverage of injection molding in the World of Plastics. There have been changes, including extensive additions, to over 50% of the content of the second edition. Many examples are provided of processing different plastics and relating the results to critiCal factors, which range from product design to meeting performance requirements to reducing costs to zero-defect targets. Changes have not been made that concern what is basic to injection molding. However, more basic information has been added concerning present and future developments, resulting in the book being more useful for a long time to come. Detailed explanations and interpretation of individual subjects (more than 1500) are provided, using a total of 914 figures and 209 tables. Throughout the book there is extensive information on problems and solutions as well as extensive cross referencing on its many different subjects. This book represents the ENCYCLOPEDIA on IM, as is evident from its extensive and detailed text that follows from its lengthy Table of CONTENTS and INDEX with over 5200 entries. The worldwide industry encompasses many hundreds of useful plastic-related computer programs. This book lists these programs (ranging from operational training to product design to molding to marketing) and explains them briefly, but no program or series of programs can provide the details obtained and the extent of information contained in this single sourcebook.
Injection molding of rubber

Rubber Injection Moulding

Author: J. A. Lindsay

Publisher: iSmithers Rapra Publishing

ISBN:

Category: Injection molding of rubber

Page: 95

View: 397

This review has been written as a practical guide to rubber injection moulding. Many injection moulding processes produce rejects or scrap, because they depend on a b257 of variables. To eliminate waste it is necessary to learn how to recognise the variables that cause problems, and then experiment to understand their interdependence. This can be developed to a fine art and lead towards 'right first time' processing, the commercial ideal. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Technology & Engineering

Plastic Injection Molding: Manufacturing Process Fundamentals

Author: Douglas M. Bryce

Publisher: Society of Manufacturing Engineers

ISBN:

Category: Technology & Engineering

Page: 277

View: 922

This book provides a clear and direct explanation of injection molding processes and equipment to empower people in plastics manufacturing to solve problems and avoid costly errors. Packed with useful, fundamental information for learning and optimizing your injection-molding operation, you'll gain a complete working knowledge of the process.

Injection Molding Process

Author: Brenton Schei

Publisher:

ISBN:

Category:

Page: 128

View: 699

Injection molding) is a manufacturing process for producing parts by injecting molten material into a mold, or mold. Injection molding can be performed with a host of materials mainly including metals (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mold cavity, where it cools and hardens to the configuration of the cavity. This book may give you: Injection Molding Process: What Is The Injection Molding Process? Plastic Injection Moulding Raw Materials: What Are The Types Of Injection Moulding? Plastic Injection Molding Machine: What Is Injection Molding Used For?