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Testing of Plastics - its Application to Thermoforming

May 9, 2002

Code: TOP

Purpose & Overview

This one-day seminar is designed to provide a basic understanding of material behavior in thermoforming, sheet extrusion, and part performance. It will provide an overview of ASTM and other laboratory tests, the specific material property tested and how it relates to thermoforming. An understanding of the applicability of tests and its importance will be presented. The attendee will understand material properties, what properties to test, how it relates to thermoforming and why it's important for quality management. Additionally, a typical QA/QC laboratory scenario will be presented for open discussion.

About the Instructor: Donald Hylton

Donald Hylton has 25 years in industrial and academic experience in polymer testing, testing method development, polymer processing and product development or thermoforming applications. He is one of the few Fellows of the Society of Plastics Engineers. As a Polymer Scientist with General Electric, he helped to develop proprietory instrumentation that successfully predicted thermoformability of forming materials and developed many new test procedures. He later joined Exxon where he was a Product Development Specialist for thermoformable polypropylene. He also provided technical service and troubleshooting to the thermoforming industry. He developed several tests for evaluating formability including a sag test that is used extensively for polypropylene product development. As a Testing Technology Scientist at Exxon, he became the focal point for laboratory testing, procedure development and quality assurance. He also served as chairman of ASTM's Subcommittee on film and sheeting. In 1995 he joined the staff at Clark Atlanta University as Associate Director of the Science Research Center where he is responsible for center operations, safety and quality assurance. In addition, he has continued research in test method development and thermoforming process and material development. He has many publications and has given numerous lectures on material behavior and test methods for thermoforming.

Seminar Content

Opening * Introduction * Scope of seminar

Introduction to Viscoelasticity * What is viscoelasticity * Why is it important

What Affects Viscoelsticity * Polymerization: definition, molecular structure, molecular weight and molecular weight distribution * Morphology: definition and why is it important * Heat Histories: sources and why is it important * Blending/Alloying: additives, pigments, modifiers and why is it important * What polymers are best for thermoforming and why

Role of Viscoelasticity in Thermoforming * Sheet extrusion * Forming * Final part properties

Affect of Material Properties in Thermoforming * Principle of accountability * Flow diagram * Polymerization * Compounding * Sheet exfusion * Heating, cooling * Sag characterization * Port formation * Part performance

Overview of Material Testing * Why testing is important * ASTM testing: explanation, illustration, applicability * Other tests: explanation, illustration, applicability

What Test are Most Important * Identification of critical characteristics * Applicable tests: thermoforming, sheet extrusion, end use * How to test * What does it all mean

Material Testing as a Quality Control Tool * Quality scenario: outline, model, expected outcomes * Specifications: What are they, accessing capabilities, statistical process control * Partnering forum on Thermoforming technology * Computer simulation * Thermal analysis * New technologies

Seminar Fee

Early registration - On or before 4/3/02

SPE Member: $540

Nonmember: $655

Late registration - After 4/3/02

SPE Member: $590

Nonmember: $705

Thermoforming Technology for industrial Applications

May 6, 7 and 8, 2002

Code: TTIA

Purpose & Overview

Because the course begins with a thorough review of the basics, everyone will be immediately brought up to the same level. Both your experience and knowledge will be organized into a rational plan of action. The segments on techniques and tooling will create a thorough understanding of the practical application of the design theories. The purchasing and marketing segments will introduce the production engineer to the realities of the marketplace, while developing a practical outlook for those engaged in those areas. The troubleshooting/heating session alone will be worth the cost and time to the majority of those attending

Who should attend?

This is a course for those involved in any aspect of thermoforming. You'll walk away with newfound insights that can be applied immediately to more cost effective thermoforming production methods.

About the Instructor: William K. "Bill" McConnell, Jr.

Mr. McConnell's pioneering contributions to the plastics industry are well recognized. Bill was awarded the first annual "Thermoformer of the Year" award from the Thermoforming Division of the Society of Plastics Engineers and has been named a "Fellow" of the Society. Bill was honored with a "Lifetime Achievement Award" at the 1997 Thermoforming Conference. He was inducted into the Plastics Pioneers Association in 1997. He has served SPE as International Membership Chairman, Education Chairman and President of the North Texas Section. Bill is currently on the Board of Directors of the Thermoforming Division. He is teaching 2,3, and 5-day thermoforming seminars for the SPE, and has done so for since 1972. He also has taught for the Rubber & Plastic Institute (England). In addition to the U.S., his seminars have been held in England, Belgium, South Africa, Canada, Mexico and Australia. He is asked regularly to be an expert witness and consultant to the legal field on plastics-related projects. After attending T exas A & M University with a major in Aeronautical Engineering, he taught aerial navigation for the Navy and then founded and operated a non-scheduled airline for two years. Bill gained 14 years of invaluable experience as Vice President & General Manager of Texstar Plastics. He was one of the pioneers in thermoforming and plastics processing in the industrial and aerospace industries. He then organized a manufacturer's representative business dealing in plastic sheet, film and equipment which he operated for 20 years. In 1964 he founded AAA Plastic Equipment, Inc. manufacturing shuttle and rotary thermoforming equipment and served as President, General Manager and Chairman. He sold AAA in 1979. Bill's career gives him a unique knowledge of all aspects of plastics thermoforming production, from the design of equipment and manufacturing to the successful marketing of the product. Bill has partnered with the SPE to author the "Ten Fundamentals of Thermoforming", the only thermoforming training product in the in dustry's marketplace today. The series includes 2 videos and a companion volume.

Seminar Content

Introduction * Definition * History * Future * Advantages and disadvantages * The ten basic fundamentals

Heating * Convection * Conduction * Radiation

Thermoforming Methods * Vacuum * Pressure * Mechanical * Predraw stretching: snap bock, plug assist * Combination forming * Slip forming * Twin sheet forming

Materials for Thermoforming * Types of plastics polymers * Material examples

Production of Sheet and Film * Extrusion * Other methods * Sheet purchasing specifications

Trimming * Routing and drilling * Sawing * Punching, shearing and die cutting * Robotics * Trim fixtures * High pressure water jet and laser * Deburring

Rigidizing * Bonded doublers * Fiberglass spray-up * Foam-in-place * Twin sheet

Tooling * Male or female mold * Mold construction * Vacuum holes and slots * Temperature control * Break-aways and undercuts * Orphaned inserts

Troubleshooting * Pilot error * Mechanical * Material * Heating * Pressure (vacuum or compressed air) * Controls

Design and Costing

Seminar Fee

Early registration - On or before 4/3/02

SPE Member: $905

Nonmember: $1020

Late registration - After 4/3/02

SPE Member: $955

Nonmember: $1070
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Article Details
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Title Annotation:seminar
Publication:Plastics Engineering
Article Type:Brief Article
Date:Mar 1, 2002
Previous Article:Product Design & Development.
Next Article:Thermoplastic materials & foams.

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