Coextrusion
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Author | : D. Djordjevic |
Publisher | : iSmithers Rapra Publishing |
Total Pages | : 160 |
Release | : 1992 |
Genre | : Technology & Engineering |
ISBN | : 9780902348714 |
This report reviews sheet and profile extrusion, wire and cable coating and co-injection, describing both the rheological and structural considerations and the design and selection of machinery. Problems of layer instability and the c094 of layer c098 are addressed, as well as the selection of polymers and the recyclability of coextruded scrap. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.
Author | : Françoise Pardos |
Publisher | : iSmithers Rapra Publishing |
Total Pages | : 192 |
Release | : 2004 |
Genre | : Market surveys |
ISBN | : 1859574807 |
Flexible films are defined as being planar forms of plastics, which may be thick enough to be self-supporting but thin enough to be flexed, folded and/or creased without cracking. Films comprise around 25 per cent of all plastics used worldwide, around 40 million tons, and are thus a massive market sector. Commodity plastics dominate, with polyethylene and polypropylene together accounting for around 34 million tons. This is an expanding area with increased demand each year particularly in the developing regions of the world and with a move from rigid to flexible packaging. There are many material types used in films from single layer polymers to multilayer structures with tie layers and copolymers. Multilayers permit custom adaptation of material properties from barrier to strength. Technology, such as the orientation of polypropylene, has produced better properties and more valuable materials. High performance plastics are also being used in applications such as telectronics. There are details of the main suppliers including mergers and capacity. coextrusion, casting, extrusion coating, extrusion laminating and metallising. Blown extrusion was the first process used to make films of polyethylene. These processes have advantages and disadvantages depending on the material type in use, the width and thickness of film required. Films are mainly used in packaging for foodstuffs, but there are also substantial market segments for medical, electronic, automotive and construction applications. Specific applications include decorative wrap, form-fill-seal, blood bags, flexible printed circuits, bed sheeting, diapers, and in-mould decorating of car parts (to replace painting and provide a more durable surface coating). Carrier bags and garbage bags are big markets, with imports to Europe; there are environmental concerns about the use of plastic bags and these are discussed in the report. geomembranes and similar applications. PE and PP are the main materials used in packaging films. PET is primarily used in magnetics, optics and telectronics. PVC is found in consumer goods and medical applications, while PVB is mainly used in automotive and construction applications as glazing protection. Multimaterial films account for around 7 million tons of the films produced, with around 95 per cent of this going into packaging applications. These are just some of the examples listed in this market report. Europe and North America each account for about 30 per cent of the total world consumption of plastic films. The plastic films supply structure and individual company information are summarised in the second half of this market report on Plastic Films in Europe and the Rest of the World.
Author | : |
Publisher | : iSmithers Rapra Publishing |
Total Pages | : 200 |
Release | : 2005 |
Genre | : Technology & Engineering |
ISBN | : 9781859575406 |
This first international conference on Multilayer Films brought together the plastic films industry: converters, manufacturers, machinery developers, test houses, materials suppliers, engineers and packaging end-users to hear about the latest technology and products.
Author | : Sidney Levy |
Publisher | : Industrial Press Inc. |
Total Pages | : 404 |
Release | : 1989 |
Genre | : Technology & Engineering |
ISBN | : 9780831111854 |
Offering complete and in-depth data and information on plastics extrusion, this practical handbook presents the technology of the subject rather than the theory. Presents an overview of extrusion technology as applied to the operation of extrusion systems and the design of tooling and equipment for use in the process. Provides basic technical information on the behavior of polymer and plastics materials in the extrusion process. Contains tool descriptions that provide a basis for the analysis of existing product lines as examples for the design of new systems. Includes illustrations of and background material on control systems for the extruder and extrusion process. Fundamentals of the Extrusion Process. Extruder Design, Construction and Operation. Extrusion Dies for Specific Product Lines. Controlling the Extrusion Process. Heat Transfer and Heat Content Considerations. Downstream Equipment and Auxiliary Units for Extrusion Lines. Coextrusion and Dual-Extrusion Technology. Extrusion of Cellular Plastics Products. Extrusion System Design and Integration. On-Line and Computer Control of the Extrusion Process. Plant Design and Operations. Extrusion Products and Processes. Glossary. Index.
Author | : Marlene G. Rosato |
Publisher | : Springer Science & Business Media |
Total Pages | : 696 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 146154579X |
After over a century of worldwide production of all kinds trol persons, cost estimators, buyers, vendors, consultants, of products, the plastics industry is now the fourth largest and others. industry in the United States. This brief, concise, and prac The bulk of the book is the alphabetical listing of en tical book is a cutting edge compendium of the plastics tries. Preceding those entries is A Plastics Overview: Fig industry's information and terminology-ranging from ures and Tables (which presents eight summary guides on design, materials, and processes, to testing, quality control, the subjects examined in the text) and then the World of regulations, legal matters, and profitability. New and use Plastics Reviews (which presents 14 articles that provide ful developments in plastic materials and processing con general introductory information, comprehensive updates, tinually are on the horizon, and the examples of these de and important networking avenues within the world of velopments that are discussed in the book provide guides plastics). Following the alphabetical listing of entries, at the to past and future trends. end of the encyclopedia, seven appendices provide back This practical and comprehensive book reviews the ground and source guide information keyed to the text of the book. The extensive and useful Appendix A, List of plastics industry virtually from A to Z through its more than 25,000 entries. Its concise entries cover the basic is Abbreviations, lists all abbreviations used in the text.
Author | : Chang Dae Han |
Publisher | : Oxford University Press |
Total Pages | : 598 |
Release | : 2007-06-04 |
Genre | : Technology & Engineering |
ISBN | : 0198040628 |
Volume 2 presents the fundamental principles related to polymer processign operations including the processing of thermoplastic polymers and thermosets. The objective of this volume is not to provide recipies that necessarily guarantee better product quality. Rather, emphasis is placed on presenting a fundamental approach to effectively analyze processing operations. The specific polymer processing operations for thermoplastics include plasticating single-screw extrusion, morphology evolution during compounding of polymer blends, compatibilization of immiscible polymer blends, wire coating extrusion, fiber spinning, tubular film blowing, coextrusion, and thermoplastic foam extrusion. The specific polymer processing operations for thermosets include reaction injection molding, pultrusion of fiber-reinforced thermosets, and compression molding of thermoset composites.
Author | : Natalie Brown |
Publisher | : CRC Press |
Total Pages | : 560 |
Release | : 1992-04-15 |
Genre | : Technology & Engineering |
ISBN | : 9780824786854 |
Abundant, detailed information on how plastics are used in modern food distribution and the qualitative and quantitative linkages between food requirements and plastics' fabrication and performance. Covers technical properties, fabrication methods, economics, design calculations, regulations, use of
Author | : John R. Wagner Jr. |
Publisher | : William Andrew |
Total Pages | : 277 |
Release | : 2009-11-03 |
Genre | : Technology & Engineering |
ISBN | : 0815520220 |
A comprehensive and highly practical survey of the materials, hardware, processes and applications of flexible plastic films. Aimed at a wide audience of engineers, technicians, managers, purchasing agents and users, Multilayer Flexible Packaging provides a thorough introduction to the manufacturing and applications of flexible plastic films, covering: - Materials - Hardware and Processes - Multilayer film designs and applications The materials coverage includes detailed sections on polyethylene, polypropylene and additives. The dies used to produce multilayer films are explored in the hardware section, and the process engineering of film manufacture explained, with a particular focus on meeting specifications and targets. The section includes unique coverage of the problematic area of bending technology, providing a unique explanation of the issues involved in the blending of viscoelastic non-Newtonian polymeric materials. About the author John R. Wagner, Jr. is President of Crescent Associates, Inc., a consulting firm that specializes in plastic films and flexible packaging. He graduated from the University of Notre Dame with a BS and MS in Chemical Engineering.
Author | : Aaron Thomas Crumm |
Publisher | : |
Total Pages | : 590 |
Release | : 2000 |
Genre | : |
ISBN | : |
Author | : Kit L. Yam |
Publisher | : John Wiley & Sons |
Total Pages | : 1368 |
Release | : 2010-01-05 |
Genre | : Technology & Engineering |
ISBN | : 0470541385 |
The complete and authoritative guide to modern packaging technologies —updated and expanded From A to Z, The Wiley Encyclopedia of Packaging Technology, Third Edition covers all aspects of packaging technologies essential to the food and pharmaceutical industries, among others. This edition has been thoroughly updated and expanded to include important innovations and changes in materials, processes, and technologies that have occurred over the past decade. It is an invaluable resource for packaging technologists, scientists and engineers, students and educators, packaging material suppliers, packaging converters, packaging machinery manufacturers, processors, retailers, and regulatory agencies. In addition to updating and improving articles from the previous edition, new articles are also added to cover the recent advances and developments in packaging. Content new to this edition includes: Advanced packaging materials such as antimicrobial materials, biobased materials, nanocomposite materials, ceramic-coated films, and perforated films Advanced packaging technologies such as active and intelligent packaging, radio frequency identification (RFID), controlled release packaging, smart blending, nanotechnology, biosensor technology, and package integrity inspection Various aspects important to packaging such as sustainable packaging, migration, lipid oxidation, light protection, and intellectual property Contributions from experts in all-important aspects of packaging Extensive cross-referencing and easy-to-access information on all subjects Large, double-column format for easy reference