High Solids and High Performance Solvent-Based Laminating Adhesives

High Solids and High Performance Solvent-Based Laminating Adhesives

Rui Xie
The Dow Chemical Company

Solvent-based laminating adhesives have been widely used for food and pharmaceutical packaging, and industrial laminations. Especially for the medium and high performance markets, solvent-based laminating adhesives have been the primary workhorse due to excellent temperature and product resistance. However, the use of solvents in these products results in environmental emissions, and line-speed limitation due to the need to dry the solvent completely before lamination. While higher-solids containing solvent-based adhesives have been developed in the past to address the above challenges, these higher-solids adhesives often exhibit high viscosity, short pot life, poor green bonds, and inadequate temperature and product resistance. In this paper, we discuss recent developments in High Solids and High Performance solvent-based laminating adhesives at the Dow Chemical Company. These new adhesives are capable of running at over 50% solids with gravure cylinders, while maintaining low viscosity, extended pot life, excellent green bonds, and superior temperature and product resistance. The benefits to the converting industry are: (i) Improved cost-in-use (ii) Enhanced productivity (iii) Environmentally more friendly.