This comprehensive study of extrusion coating technology describes the process in detail, combining experimental data with computer modeling and the author's 30 years of experience. This methodology provides insight, clarity and assistance in problem solving and process optimization. The sections on equipment design, adhesion, coextrusion, and substrates are all relatively extensive. The chapter on adhesion promotion discusses corona, flame, ozone, and chemical surface treatments. Throughout, computer modeling is used to enhance the understanding of screw design, heat transfer, adhesive stresses, flow issues in coextrusion, and more.

From the Preface: “...The subjects of polyethylene oxidation and stress relaxation and their impact on adhesion are discussed using experimental data and numerical methods. Melt velocity, draw rates, shear stress and thickness distributions and their effects on interlayer instabilities in coextrusion coating dies with various polymers are analysed. Heat transfer between layers in feedblock and dual manifold dies are predicted. Finally details on key polymers and substrates that are commonly available to the extrusion coater are reviewed and will prove invaluable to the reader searching for innovation...”

Target Audience: Technicians, engineers, and students concerned with the extrusion coating process.

Table of Contents:

The Extrusion Coating Process

Equipment and Screw Design

Die Design

Stretching Flows and Neck-In

Adhesion

Coextrusion

Adhesion Promotion Methods

Polyolefins for Extrusion Coating

Barrier Polymers

Substrates and Films

Extrusion Coated Products

Organoleptic Interactions

Heat Sealing with PE Resins