PA industrial yarn applications

Polyamide is polymerized in the liquid phase from the monomers caprolactam (PA6) or hexamethylenediamine (HMDA) and adipic acid (PA66) and pelletized. Other monomers are used to produce a variety of different PA grades. Optionally the PA pellets undergo a water extraction process step. The resulting PA pellets contain several percent of water.

POLYMETRIX processes are used to dry and condition (drying to equilibrium moisture content) of all types of polyamides. Further the viscosity is adjusted by the POLYMETRIX SSP process for PA. Viscosity is adjusted by temperature and residence time, whereas the final moisture content is adjusted by the process gas humidity. Both are critical parameters for an optimum spinning process.

Drying/conditioning and SSP can be performed at the same time in one process or performed separately depending on process requirements.

Pneumatic conveying from the process to the storage silos and to the spin extruders is fully integrated in the overall process. This ensures that the pellets reach the spin extruder without any loss of quality.

SSP for PA and other polymers
Solid state drying and conditioning
Pneumatic pellet and flake conveying



material sourcing material processing material application quality
PA melt
transition melt/solid
wet PA pellets
solid stated and conditioned PA
CP continuous polymerization plant
solid state polycondensation and conditioning plant
CP continous polymerization
SSP for high viscosity
moisture conditioning for spinning
PMX services
up-stream material specification
system engineering & supply
SSP & conditioning design
integrated material handling
after sales services
down-stream material specification

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