Mixing in single screw extrusion / Martin Gale.

Includes bibliographical references and index.

Print version record.

Machine generated contents note: 1. Need for Good Mixing in Single Screw Extrusion -- 1.2. Examples of Mixing Problems -- 1.2.1. Polyethylene Pipes and Cables -- 1.2.2. Blow Moulded Bottles -- 1.2.3. Chalk Filled Polypropylene Pipe -- 1.2.4. Blown Film -- 1.2.5. Industrial Blow Mouldings -- 1.2.6. Production Scrap Re-use -- 1.2.7. Agglomerates and Gels in Thin Extrusions -- 1.2.8. Transparent Polycaprolactone/SAN Blends -- 1.2.9. Decorative Wood Grain Effects -- References -- 2. Dispersive and Distributive Mixing -- 2.1. Definitions and Illustrations -- 2.2. Dispersive Mixing -- 2.2.1. Dispersive Mixing Mechanisms -- 2.2.2. Dispersive Mixing of Additive Powders Such as Pigments -- 2.3. Distributive Mixing -- 2.3.1. Laminar Shear Flow Mixing -- 2.3.2. Measurement of Distributive Mixing Achieved by Laminar Shearing -- 2.3.3. Limitations of Lamina Flow Mixing -- 2.3.4. Eliminating Laminar Striations -- References -- 3. Measurement of Mixing -- 3.1. Need for Measurement of Mixing -- 3.2. Striation Thickness Measurement -- 3.3. Agglomerate Measurement -- 3.3.1. Microscopy Examination of Thin Samples -- 3.3.2. Agglomerate Count for Blown Film -- 3.3.3. Screen Pack Filtration Test -- 3.4. Influences of Mixing on Product Properties -- 3.5. Preparation of Thin Sections for Optical Microscopy Assessment -- References -- 4. Single Screw Extruder Stages: Effects on Mixing -- References -- 5. Pellet Handling: A Source of Variable Composition -- 5.1. Introduction -- 5.2. Hopper Design -- 5.2.1. Mass Flow Hopper -- 5.2.2. Non-mass Flow Hopper -- 5.2.3. Round Hoppers -- 5.2.4. Square and Rectangular Hoppers -- 5.2.5. Ledges and Corners -- 5.3. Composition Variations -- 5.3.1. Example 1 -- 5.3.2. Example 2 -- 5.3.3. Example 3 -- 5.3.4. Other Systems -- 5.4. Measurement of Particulate Properties -- 5.4.1. Hopper Flow Tests.

A lot of plastics products are extruded and most of those products contain additives, which mean that the plastic must be mixed at some point. Mixing is generally done with a twin-screw extruder, and the single-screw extruder, which is used in product production, is generally overlooked as a device for mixing. This reference handbook, written by a former Principal Consultant at Smithers Rapra, and the inventor of the cavity transfer mixer, redresses the balance.

This handbook is a must-have practical guide to the subject of single-screw extrusion. Avoiding mathematical theory, except when absolutely necessary, this authoritative handbook empowers the reader to achieving good results with their plastic mixing. Mixing in Single Screw Extrusion will be a valuable resource to all involved in the art of plastic extrusion. --Book Jacket.

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