PSA (Solvent-Free)

A customised solution for any challenge

When it comes to successfully producing and compounding pressure-sensitive adhesives (PSA), there are several decisive factors: the targeted meltability of different formulation components, the precise control of reactions, an extruded material of equal homogeneity and viscosity, effective cooling of the adhesive mass and high degassing quality to optimise subsequent processing.

• Targeted melting of various formulation components

  It is efficient: substances with different temperature dependencies can be deliberately conveyed into narrowly defined temperature zones. In this way, for example, even demanding materials can be melted without flocculation or adhesion, something that requires a considerable period of time with other systems.

• Precise control of reactions

  With the Planetary Roller Extruder’s individually controlled process zones, it is possible to allow chemicals to react under pressure or to intentionally trigger, control and interrupt reactions in individual process zones. Depending on the requirements of the process, it is also possible for a chemical reaction to span multiple process zones as it runs through different pressure and temperature conditions to precisely control the progress of the reaction.

• Extremely short compounding times of just a few minutes

  The heating, cooling and melting of solid materials and admixture of fluids is performed over a relatively short distance with efficient heat exchange through large surface areas. In conjunction with a special mixing chamber design and targeted control of the dwell times in the individual process zones, it is possible to achieve outstanding extrusion results with a short throughput time.

• Stable homogeneity and viscosity of the extruded material

  The outstanding mixing and effective tempering in the PRE ensure that the homogeneity and viscosity of the extruded material remain constant. In this way it is possible to maintain the consistent high quality of the product.

• Effective cooling of the adhesive mass

  The key: effectively cooling the adhesive mass to the required target temperature/viscosity during the compounding process makes it possible to continue processing the material directly without the use of static cooling units.

• Solvent-free mastication and homogenisation

  Impressive: solvent-free mastication and homogenisation of rubber, resin or filler masses make subsequent processing of the product easier while delivering better and more consistent quality. They also reduce costs and health risks.

• High degassing quality optimises subsequent processing

  The combination of extremely efficient degassing of as much as 1 mbar with large contact surface areas for energy exchange allows the outstanding evacuation of volatile components such as solvents, degradation products and odours.