Book Cover
Author Klein, Peter W.

Title Fundamentals of plastics thermoforming / Peter W. Klein
Published [San Rafael, Calif.] : Morgan & Claypool Publishers, [2009]
Online access available from:
Synthesis Digital Library    View Resource Record  


Description 1 online resource (xiii, 83 pages) : illustrations, digital, PDF file
Series Synthesis lectures on materials engineering ; #1
Synthesis lectures on materials engineering (Online) ; #1
Contents Introduction -- Introduction to thermoforming -- Common thermoformed products -- Why use thermoforming -- Advantages of thermoforming -- Limitations/disadvantages of thermoforming -- Plastic memory -- Plastics materials -- Introduction -- Molecular structure -- Morphology -- Van der Waals' forces -- Discovering Van der Waals' forces -- Most used materials -- Polystyrene (PS) -- Acrylonitrile butadiene styrene (ABS) -- Polyvinyl chloride (PVC) -- Polymethyl methacrylate (PMMA or acrylic) -- High density polyethylene (HDPE) -- Low density polyethylene (LDPE) -- Polypropylene (PP) -- Cellulosics -- Polyethylene terephthalate (PET) -- Green plastics -- Important terminology -- Heat deflection temperature (HDT) -- Glass transition temperature (TG) -- Melt temperature (TM) -- Polymer set temperature -- Homopolymer -- Thermoforming window -- Thermoforming process overview -- The thermoforming process -- Sheet preparation -- Drying -- Loading -- Heating -- Forming -- Cooling -- Unloading -- Trimming -- The forming process -- Forming introduction -- Mechanical forming -- Vacuum forming -- Pressure forming -- Combination forming processes -- Drape forming -- Pneumatic preforming -- Mechanical preforming -- Twin sheet thermoforming -- Laminating thermoforming -- Part design -- Design questions -- Wall thickness variation -- Plug versus cavity -- Draw ratios -- Aerial draw ratio (ADR) -- Linear draw ratio (LDR) -- Height-to-dimension ratio -- Material selection -- Part geometry -- Corners and radii -- Draft angles -- Depth of draw -- Webbing -- Undercuts or negative draft -- Part application issues -- Useful temperature range -- Strength requirements -- Stiffness -- Quality requirements -- Cosmetics -- Optics -- Dimensional tolerances -- Mold/tool design -- Purpose of the mold or tool -- Mold materials -- Mold geometry/shrinkage -- Venting -- Temperature control -- Cavities -- Quality control issues -- Introduction -- Material source -- Regrind -- Sheet orientation -- Orientation test -- Moisture -- Cosmetics -- Process quality -- Machine set-up -- Variation -- Tool quality -- Facility quality -- Quality inspection -- Quality tools -- Lean operations -- Introduction -- Eliminating waste -- 6S -- Process flow chart -- Process mapping -- Visual controls -- Set-up reduction -- Poka yoke -- Environmental issues -- Introduction -- Source reduction -- Recycling -- Material selection -- Green plastics
Summary The process of heating and reshaping plastics sheet and film materials has been in use since the beginning of the plastics industry. This process is known as thermoforming. Today this process is used for industrial products including signage, housings, and hot tubs. It also produces much of the packaging in use today including blister packs, egg cartons, and food storage containers. This process has many advantages over other methods of producing these products, but also it has some limitations. This book has a twofold purpose. It is designed to be used a text book for a course on thermoforming. It is also intended to be an application guide for professionals in the field of thermoforming including manufacturing, process and quality engineers and managers. This book is focused on process application rather than theory. It refers to real products and processes with the intent of understanding the real issues faced in this industry. In addition to materials and processes, part and tool design are covered. Quality control is critical to any operation and this is also covered in this text. Two areas of focus in today's industry include Lean operations and environmental issues. Both of these topics are also included
Notes Title from PDF title page (viewed Apr. 29, 2009)
Bibliography Includes bibliographical references (pages 81-82)
Subject Thermoforming.
Form Electronic book
ISBN 1598298844
1598298852 (electronic bk.)
9781598298857 (electronic bk.)