This book clarifies and quantifies many of the technical interactions in the process. It distinguishes itself from other books on the subject by being a seamless story of the advanced aspects of the rotational molding process. There are seven chapters within the book. The US market for rotational molding products was one billion pounds in the year 2000. The growth of the rotational molding industry has grown at 10 to 15% per year. With this growth has come an increasing need for details on the complex, technical aspects of the process.

Table of Contents

1.0 Introduction 1.1 The Process 1.2 The Early Days 1.3 Materials 1.4 Advantages and Disadvantages 1.5 General Relationships between Processing Conditions and Properties 2. Rotational Molding Polymers 2.0 Introduction 2.1 General Characteristics of Polymers 2.2 Polymers as Powders and Liquids 2.3 Polyethylene Types 2.4 Polypropylene 2.5 PVC û Plastisols, Drysols, and Powdered Flexible Compounds 2.6 Nylons 2.7 Other Polymers 2.8 Liquid Polymers 2.9 In-Coming Material Evaluation 2.10 Product Testing Protocols and Relationship to Polymer Characteristics 2.11 Desirable Characteristics of a Rotational Molding Resin 3. Grinding and Coloring 3.0 Introduction 3.1 General Issues Relating to Grinding 3.2 Particle Size Distribution 3.3 Particle Shape 3.4 Dry Flow 3.5 Bulk Density 3.6 Factors Affecting Powder Quality 3.7 Grinding Costs 3.8 Micropelletizing 3.9 Polyvinyl Chloride 3.10 Coloring of Plastics for Rotational Molding 4. Rotational Molding Machines 4.0 Introduction 4.1 Types of Rotational Molding Machines 4.2 Machine Design Considerations 4.3 The Oven 4.4 Cooling 4.5 Process Monitors 4.6 Servicing 4.7 Advanced Machine Design 5. Mold Design 5.0 Introduction 5.1 Mold Materials 5.2 Mechanical and Thermal Characteristics of Mold Materials 5.3 Mold Design 5.4 Calculation of Charge Weight 5.5 V


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© 2002
William Andrew
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