Hot Melt Extrusion (HME) pharmaceutical extruder is a technology for processing polymeric materials above the glass transition temperature (Tg). Enabling thermoplastic binders and/or mixing of polymers and reactive compounds at the molecular level. In recent years, hot-melt extrusion (HME) has been widely used for solubility-enhancing applications of polymer-based amorphous solid dispersions. If premise is that the API is thermally stable.

Pharmaceutical extruder offers many advantages over other pharmaceutical processing techniques. Molten polymers during the extrusion process can function as thermal binders and act as drug depots and/or drug release retardants upon cooling and solidification. Solvents and water are not necessary thereby reducing the number of processing steps and eliminating time-consuming drying steps. A matrix can be massed into a larger unit independent of compression properties. The intense mixing and agitation imposed by the rotating screw cause de-aggregation of suspended particles in the molten polymer resulting in a more uniform dispersion. The process is thus continuous and efficient.


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.


Feedding System

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

Heating method:

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

pharma extruder

Temperature Control

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.

Combined twin-screw:

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.

hot melt extruder

Split barrel design:

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

Multi-stage exhaust: 

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

clamshell barrel pharma twin screw extruder

Complies with GMP standards:

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.

Compact fuselage design:

Small footprint, and a complete production device with a total length of less than 3 meters (including upstream and downstream auxiliary machines)

Tchnical Data

Equiment parameters
Screw diameter 11mm,16mm,20mm,35mm Torque 50-180N.m
ratio of screw
15/1-40/1 optional Power supply 230V,400V,can be
customized as required

Screw speed
higher speed can be
configured as required

medical grade 316L
stainlesss steel or higher,
electrolytic polishing
Pressure 250 bar and above Heating temperature 230℃(400℃ optional)