During the hot melt extrusion process, the raw and auxiliary materials are added into the feed hopper through the quantitative feeding device, and then uniformly conveyed into the barrel through the twin screws. The screw heats in stages, heats up step by step, melts the material step by step, and realizes co-melting in the middle section. At the same time, under the action of strong shear force, it disperses, distributes and mixes, and then further carries out vacuum devolatilization to remove the degraded small molecular substances, and moisture from the material, and finally extrudes the material from the die head by extrusion of the extruder screw.

Characteristic:

The mixture is then subjected to heat and pressure, which melts the polymer and activates any curing agents or cross-linking agents.

The upper and lower cylinders are designed to be electrically heated in sections at the same time, with uniform heating.

Multi-segment temperature control system (± 0.5 ℃ within the set value range): the temperature control feedback system is adopted to ensure the stability and reproducibility of the hot melting process.

The twin-screw adopts the form of multi-section splicing, which integrates mixing, pressurization, melting, extrusion and cooling to ensure the complete integration of main medicine and auxiliary materials.

Which can be opened in a few minutes, makes product conversion, equipment maintenance and new product development very convenient.

Multi-stage exhaust holes are designed to effectively exhaust air and water in molten materials, reduce extrusion pressure and improve product quality.

It iss easy to disassemble and clean, has three-level password authority, process parameters are automatically controlled by PLC, all data are automatically stored online, and can be exported from USB flash disk.