The second edition of this popular book encompasses the entire coating operation. Step by step troubleshooting guidelines cover all major coating and drying methods, enabling the reader to identify the causes of defects, and providing the means to eliminate them. Coating and Drying Defects: Troubleshooting Operating Problems presents a methodology which will guide readers from the start of the troubleshooting procedure, when the defect is first discovered, to the finish where the mechanism for the formation of the flaw is defined and then eliminated. This updated edition presents new material reflecting recent improvements in defect detection and analysis and coating weight control; it also broadens its scope to include defects associated with secondary process operations.

From the Preface: “...The rapid advances in coating technology coupled with rapid development of product formulation technology has led to many new products that are more uniform and have a low defect level, resulting in higher yields and lower costs. Quality levels that were acceptable only a few years ago are no longer acceptable and in future will be even more demanding. Environmental needs and the resulting economic considerations will also become more stringent and will require that a much higher fraction of the starting materials end up as usable product...This book does not cover paint film defects as such. It also does not cover defects in the very thin films produced by vacuum deposition techniques. It does cover defects in most coated webs. For all coated products, standards are established that specify the characteristics of the coating solutions, the coating process operating conditions, and the final chemical and physical properties of the coating. Unfortunately, the reality of the coating process is that these standards are often not achieved and product is often produced which is, therefore, defective...”

Target Audience: Strongly recommended for manufacturing and quality control personnel, as well as engineers and scientists concerned with continuous web coating.

Table of Contents:

Introduction

Troubleshooting or Problem-Solving Procedure

Coater and Defect Analytical Tools

Problems Associated With Feed Preparation

Problems Associated With Roll Coating and Related Processes

Problems in Slot, Extrusion, Slide, and Curtain Coating

Coating Problems Associated With Coating Die Design

Surface Tension Driven Defects

Problems Associated With Static Electricity

Problems Associated With Drying

Problems Associated With Web Handling

The Role of Process Support Equipment

Coating Defects Database

Defect Prevention

Index