Revision of The Extruder Book published in 2001. New images, updated materials.If you have an extruder and aren't sure what to do with it, Daryl's comprehensive book updates his best-selling first edition. You'll discover tips for setting up your studio, supplies you'll need to make extruding easier, and accessories that will help you with more complicated extrusions. Your extruder set-up can be as sophisticated as any pros with less effort than you think.Since his first edition, Daryl has expanded his offering of projects and you'll discover sixteen great demonstrations which will increase your confidence and challenge your skills. From using simple dies to constructing projects from multiple-part dies, Daryl carefully leads you step-by-step through projects that run the gamut of complexity. As you master each process, your imagination will inspire even more ideas to take on.If you don't already have an extruder, don't worry. Daryl describes what's on the market today from major manufacturers, but he also includes plans on how to make your own extruder from parts you can gather at a local home center. But the essence of an extruder is the die and here is where Daryl showcases his expertise. From altering stock dies to creating complex multi-part dies, you'll find instructions for making unique dies unlike any you can buy on the market.To illustrate just how versatile the extruder is, Daryl showcases the work of dozens of potters and artists using the extruder in their work. You'll be inspired by the creativity and you'll see that your extruder is capable of much more than just making test tiles or strap handles.
Co-rotating screws and/or extruders are used in many branches of industry for producing, preparing and/or processing highly viscous materials. They find a wide variety of applications especially in the plastics, rubber and food industries. This book provides basic engineering knowledge regarding twin-screw machines; it lists the most important machine-technical requirements and provides examples based on actual practice. Better understanding of the processes is emphasized as this is a prerequisite for optimizing twin-screw designs and operating them efficiently.
This book is intended to fill a gap between the theoretical studies and the practical experience of the processor in the extrusion of thermoplastic polymers. The former have provided a basis for numerical design of extruders and their components, but generally give scant attention to the practical performance, especially to the conflict between production rate and product quality. In practice extruders are frequently purchased to perform a range of duties; even so, the operator may have to use a machine designed for another purpose and not necessarily suitable for the polymer, process or product in hand. The operator's experience enables him to make good product in unpromising circumstances, but a large number of variables and interactions often give apparently contradictory results. The hope is that this book will provide a logical background, based on both theory and experience, which will help the industrial processor to obtain the best performance from his equipment, to recognize its limitations, and to face new problems with confidence. Mathematics is used only to the extent that it clarifies effects which cannot easily be expressed in words; ifit is passed over, at least a qualitative understanding should remain. The approximate theory will not satisfy the purist, but this seems to the authors less important than a clear representation of the physical mechanisms on which so much of the polymer processing industry depends. M. J. STEVENS J. A.