Suitable for a wide range of thermoplastic polymers, e. g. , Pp, pa, pet, pla, etc. • Easy to clean, channels where the melted materials flow smoothly; no need to be disassembled for cleaning. The materials are easier to change. • The temperature of the quenching is adjustable between 15～25℃. • The height of the quenching is adjustable to meet the application needs for the crystallization and cooling of different polymeric materials. • Cantilever structure, easy experimental operation, easy experimental observation. • The type of spinneret aperture is variable. • Thermal bonding device with a unique electrical heating system for more flexible and convenient temperature control. • Thermal bonding system can be equipped with a variety of pressure rolls with different patterns, also suitable for use in the technology of spun-lace nonwovens.