Development Trends Of Packaging Adhesive Materials

The development of packaging adhesives is constrained by stringent environmental regulations, public awareness of health, and production safety requirements. To reduce environmental pollution, the demand for adhesives using organic solvents is decreasing; secondly, the volatile organic compound (VOC) content in water-based adhesives is gradually decreasing. Europe has already banned adhesive manufacturers from using chlorinated organic compounds in water-based emulsions. Therefore, the use of hot melt adhesives and other solvent-free adhesives is constantly increasing in the production of paper, packaging materials, labels, and flexible composite materials. In paper packaging production, hot melt adhesives are used for sealing to meet the requirements of high-speed production lines, while some lamination processes have increased the proportion of water-based emulsions. Simultaneously, to better save energy, low-melting-point hot melt adhesives can be used when the operating temperature range is not too demanding. Metal-polymer lamination technology, due to the absence of solvents, has significant environmental advantages compared to other lamination technologies and is expected to experience rapid development in the future.

This patented technology aims to produce environmentally friendly adhesives. To reduce ecological damage, packaging materials must be recyclable. Adhesives can be easily removed during recycling. For example, adhesives used in the production of paper packaging materials must be easily filtered out during the paper recycling and repulping process. Another approach is to use microbially biodegradable adhesives, which will become an important development direction.

In conclusion, the packaging industry will remain a major user of adhesives for a long time to come. With the continuous improvement of adhesive bonding performance, technological advancements in bonding processes will have a positive impact on the selection of packaging materials and the improvement of packaging processing equipment. Environmental protection requirements and the need for high-speed manufacturing and assembly lines are the two major directions for the development of packaging adhesives.