Stretch Blow Molding

2nd Edition

Print ISBN: 9781437735277
eBook ISBN: 9781437735291
Imprint: William Andrew
Published Date: 22nd November 2011
Page Count: 320
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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 which 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.

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


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© William Andrew 2012
William Andrew
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