>> Maximum throughput rates and dispersion effect with twin screw extruders from Coperion.

Processing of thermoplastic elastomers TPE

Thermoplastic elastomers TPE are distinguished both by their elastic properties and their thermoplastic processing properties. They are divided into TPE-S, TPE-O, TPE-U, TPE-E, TPE-A and TPE-V based on their chemical-morphological structure. Numerous twin screw extruders from Coperion are in operation worldwide for the processing of thermoplastic elastomers in a wide variety of shapes and formulations.

Typical set-up of a plant for the production of TPE

Typical set-up of a plant for the production of TPE thermoplastic elastomers

Processing of TPE-O

TPE-O in this case describes elastomer alloys which consist of different percentages of thermosplastics and elastomers, usually SBS/SEBS.

Recipe ingredients
Elastomers: SBS, SEBS, SEPS
Thermoplastics: PS, PP, PE, PA, PPE, etc.
Plasticiser
Mineral fillers

Processing of TPE-V

TPE-V describes thermoplastic elastomers with a cross-linked rubber component. The cross-linking and dispersion of the EPDM and the mixing of sometimes large quantities of plasticisers (> 40%) demand twin screw extruders with process lengths of an average L / D = 56. Our specialists adapt the structure of the process section individually to the process steps to be executed depending on the raw materials and the cross-link system.

Recipe ingredients
PP
Additives, pigments
EPDM
Cross-linking agent, accelerator, activators
Softeners
Fillers
Regrind

Direct extrusion or inline compounding of TPE-O films

Decorative films for car interiors for example can be produced in the single-stage process by Coperion twin screw extruders. The intermediate pelletizing typical for plastics and other products is omitted in inline compounding, the investment and operating costs and the energy requirements of the production process drop drastically as a result.
> Further information about inline compounding

Plant for the production of TPE thermoplastic elastomers
Plant for the production of TPE thermoplastic elastomers