Stretch Blow Molding

2nd Edition

Authors: Ottmar Brandau
Hardcover ISBN: 9781437735277
eBook ISBN: 9781437735291
Imprint: William Andrew
Published Date: 22nd November 2011
Page Count: 320
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Table of Contents




1. A Short History of Stretch Blow Molding

2. Material Basics

2.1. Manufacture and States of PET

2.2. Crystallization of PET

2.3. Drying of PET

2.4. Behavior in the Injection Mold

2.5. Behavior in the Blow Mold

2.6. Acetaldehyde (AA) in PET Bottles

3. Reheat Stretch Blow Molding Machines

3.1. Overview

3.2. Semi-automatic Machines

3.3. Linear Shuttle-type Machines

3.4. Linear Continuous Motion Machines

3.5. Rotary Machines

4. Machine Details

4.1. Ovens

4.2. Transfer Functions

4.3. Blow Wheel/Blow Clamp

5. Blow Molds

5.1. Design

5.2. Making a Mold

5.3. Venting

6. Fundamentals of the Blow Process

6.1. Process Overview

6.2. Stretch Ratios

6.3. Types of Heat Transfer

6.4. Light Absorption Characteristics of PET

6.5. Optimum Preform Temperature

7. The Blowing Process

7.1. Reheating Preforms

7.2. Blowing Bottles

8. Injection Stretch Blow Molding Machines

8.1. Four-station Machines

8.2. Machine Controls

8.3. Injection Controls

8.4. Interaction between Injection and Blow

8.5. Conditioning

8.6. Container Blowing

8.7. Hot Runners

8.8. Integrated Two-stage Stretch Blow Molding

Chapter 9. Special Applications

9.1. Simulation of the Blow Process

9.2. Stretch Blow Molding of Oriented Polypropylene

9.3. Plant-based Plastics

9.4. Blow Process for Hot-fill Applications

9.5. Preferential Heating

9.6. Direct Feeding of Preforms into the Blow Machine

9.7. Vision Inspection

9.8. Barrier-enhancing Technologies

9.9. Blow-and-Trim Process

9.10. CSD Bottle-base Failures

9.11. Recycling of P


Stretch blow molding is the blow molding process used to produce bottles of the strength required for carbonated drinks. In this handbook, Ottmar Brandau introduces the technology of stretch blow molding, explores practical aspects of designing and running a production line and looks at practical issues for quality control and troubleshooting. As an experienced engineer, manager and consultant, Brandau’s focus is on optimizing the production process, improving quality and reducing cycle time.

This book is a thoroughly practical handbook that provides engineers and managers with the toolkit to improve production and engineering aspects in their own businesses--saving money, increasing output and improving competitiveness by adopting new technologies.

Key Features

  • Learn the tricks of the trade from an experienced engineer and manager
  • Save money: Practical strategies to optimize the production process, improve quality and reduce cycle times
  • Gain knowledge and understanding of the latest technological and best practice developments in stretch blow molding


Engineers, managers and operators in the plastics industry working in the fields of blow molding and bottle production. Plastics Engineers (mostly with an academic background in Mechanical Engineering, Chemical Engineering or Chemistry), Quality Engineers and Production Managers.


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© William Andrew 2012
William Andrew
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About the Authors

Ottmar Brandau Author

Ottmar Brandau is President of Apex Container Inc. in Ontario, Canada. Brandau is a member of the Society of Plastics Engineers and was previously VP Operations at Magic North America Inc.

Affiliations and Expertise

Apex Container Inc., Ontario, Canada