PROJECT DESCRIPTION
BACKGROUND
The generally solvent-based substances for adhesives and treatment, used frequently in the footwear manufacturing process, cause environmental problems and present potential dangers for employee health. The complete elimination of solvents from the adhesives and treatment process would mean a reduction of more than 80% in the use of solvents in the manufacturing process. This would enable companies in this sector to comply with European regulations. Several European projects have pointed to possible alternatives to solvent-based adhesives. These alternatives, such as water-based adhesives, focus mainly on sole-bonding, the most demanding process in shoe manufacturing. Footwear manufacturers, however, often appear uninformed as to the existence of alternative products. Some manufacturers are reluctant to use new products due to lack of trust and information as to processing characteristics. Manufacturers are also unsure as to whether alternative substances would meet performance requirements.
OBJECTIVES
This project sought to provide footwear manufacturers with alternatives to solvent-based bonding currently used in the manufacturing process. It aimed to conduct a wide public awareness campaign as to alternative substances. To meet these objectives, a study of different solvent-free adhesives and treatments was to be carried out. Technology used in the current manufacturing process was to be adapted. Finally, the adapted bonding technology was to be presented to other companies.
RESULTS
Six different solvent-free adhesives were selected. The beneficiary developed trials for their suitability in different stages of footwear manufacturing. Satisfactory results for the adhesives were noted during demonstration and awareness events. However, the project’s objective of completely eliminating solvent-based adhesives and treatment in footwear manufacture appears not to have been attained. Ensuring the necessary conditions, whilst using conventional machinery to apply the selected adhesives, added to the time needed to dry the alternative adhesives. This decreased the efficiency of footwear manufacturing lines and would add to total costs. Nonetheless, the project has raised awareness as to different types of solvent-free adhesives and their possible use in footwear manufacture.Six different solvent-free adhesives were selected. The beneficiary developed trials for their suitability in different stages of footwear manufacturing. Satisfactory results for the adhesives were noted during demonstration and awareness events. However, the project’s objective of completely eliminating solvent-based adhesives and treatment in footwear manufacture appears not to have been attained. Ensuring the necessary conditions, whilst using conventional machinery to apply the selected adhesives, added to the time needed to dry the alternative adhesives. This decreased the efficiency of footwear manufacturing lines and would add to total costs. Nonetheless, the project has raised awareness as to different types of solvent-free adhesives and their possible use in footwear manufacture.
