Shrink tunnel is a device used for heat shrink packaging materials and is widely utilized on production lines in various industries, including the food packaging industry, pharmaceutical packaging industry, cosmetics packaging industry, and personal care product packaging industry. The shrink tunnel uses hot air or infrared radiation to heat-treat the packaging material, allowing it to conform to the surface of the packaged item during the shrinking process, resulting in better sealing and protection.

Shrink tunnels offer adjustable temperature and airflow speed, making them suitable for meeting the shrinkage requirements of different materials and packaging items. They also have adjustable feed rates for easy compatibility with downstream packaging production lines. Shrink tunnels can be configured for either unidirectional or bidirectional material feeding, providing flexibility. Additionally, automatic material feeding and collection devices can be integrated to reduce manual labor.