Plastic Part Design for Injection Molding

To register, fill out the registration form and fax it to (978) 934-2028. For more information about registering, click here.

3 DAY LECTURE/WORKSHOP
OFFERED THREE TIMES:
January 5-7, 2009 (CRS# 00.725-001)
June 15-17, 2009 (CRS# 00.725-011)
August 10-12, 2009 (CRS# 00.725-021)
 
TUITION: $1195
 
OVERVIEW
This seminar is offered to engineers and designers involved in the design of injection molded plastic parts. The course provides a fundamental overview of the many factors associated with plastic parts that will be produced using the injection molding process. In order to design a high quality injection molded part, the designer must select an appropriate plastic material formulation, develop a functional design, and work within the manufacturing limitations associated with the injection molding process. This course will cover the fundamentals of plastic materials behavior and selection, engineering design, manufacturing (moldability) considerations, prototyping, stress analysis and assembly methods. The timely subject of design for enhanced recyclability will also be discussed, as will design developments related to new injection molding technologies.
 
CONTENT

Introduction

• Plastic material fundamentals, review of the injection molding process, and fundamentals of molds/tooling

Manufacturing Related Design Considerations for Molded Plastic Parts

• Mold filling considerations, gating, shrinkage and warpage of molded parts, mold cooling considerations, part ejection considerations

Mechanical Behavior of Plastic Materials

• Short term stress-strain behavior, creep and stress relaxation, structural design of molded plastic parts, fatigue performance, impact performance, plastic materials databases

Design for Enhanced Recyclability

• Design-related issues that enhance or hinder the recyclability of thermoplastic products

Case Study for a New Product

• Steps involved in the development of a new part (including materials selection)

Prototype Part Production

• Machine prototypes; rapid prototyping techniques; cast prototypes; molded prototypes, and rapid tooling techniques

Experimental Stress Analysis

• Brittle coatings, strain gauges, chemical testing and photoelastic testing

Assembly of Plastic Parts

• Selection of an assembly method; press fit assembly, snap fit assembly, mechanical fasteners, thermal welding techniques for thermoplastics, adhesive bonding and solvent bonding

Fundamental Design Considerations for "Other" Injection Molding Processes

• Structural foam, gas assist, multi-shot molding, multi-layer, metal injection molding

INSTRUCTOR
Dr. Nick Schott