Solid State Polycondensation Plant

The Solid State Polycondensation (SSP) process refers to the condensation polymerization reaction of solid chips, aiming to increase the molecular weight and intrinsic viscosity (IV).

The normal PET Chips are heated to the glass transition temperature (usually 10-40 ° C below the melting point). The small molecular products are taken away by vacuum or inert gas protection (generally using high-purity nitrogen), so the polycondensation reaction is continued and the viscosity is further increased. End Carboxyl (COOH) content can be decreased when IV content is increased. This process can be used to produce various bottle-grade polyester, industrial filament-grade, low-end group content PET chips, etc. SSP can be classified as continuous or batch SSP according to the process.

Can increase: chip for virgin PET, recycled PET, PA6, PA66, PTT, PBT, PPS, PPL, PP and PE.
Application: Chemical fiber industrial filament, BCF, PET bottle and packaging, Special monofilament or Composite fiber, Special staple fiber, Non-woven fabrics, BOPET, Engineering plastics, etc.
According to the needs of consumers’ research, ELANT can supply integrated SSP pilot plant. It can be easily used when power is on.

Batch SSP capacity: 5kg-20 tons/batch, with flexible product adjustment and Suitable for small-batch production.

Intrinsic viscosity(I.V)：(According to specific raw material) PET I.V: Max.1.2
Energy consumption per ton for reference：200KWh/t~400KWh/t
(In accordance with capacity and I.V requirement）