Desmopan® and Texin™ grades in the hardness range between
60 Shore A and 70 Shore D are particularly suitable for extrusion
The following products are extruded from
|> ||Tubular film
|> ||Flat and blown film
|> ||Blow moldings
The Desmopan® and Texin™ pellets and any
functional concentrates must be dried before processing to a
moisture content of ≤ 0.05 % (See Sections 2.3
Pretreatment of the granules and
thermoplastic processing machines and tools can be used in
Desmopan® and Texin™ extrusion. The downstream units must be
optimized for the typical properties of TPU.
Blending with regrindand combining of
different batches is not recommended.
Single-screw extrudersare normally used for
extruding Desmopan® and Texin™. Vented barrels are less suitable.
Heated, grooved feed throats (Fig.
1) ensure higher, more uniform throughput.
|Fig. 1: Grooved feed throat
Molten Desmopan® orTexin™ is neither corrosive nor
abrasive, which means there is no need for a special steel alloy
or armor-plating of the screw.
ratings shown in Fig. 2 should be adhered to.
Any additional torque means that processing can be carried out at
lower temperatures, making for higher dimensional stability of the
|Fig. 2: Minimum drive rating as a
Funktion of screw diameter