TPU - Epaline series 300 polyester base

TPU for extrusion

Thermoplastic polyurethane (TPU) granules are innovative technical materials with characteristics which make it suitable for several applications in the plastics industry. One of these applications is that of extruded products. Epaflex‚??s Epaline series includes products developed specifically for extrusion and calendering. Whether they be belts, pipes, wires, cables, films or profiles, Epaflex has the product for you. Epaflex produces TPU guaranteeing constant quality and ease of processing which is capable of satisfying the needs of the most complex and state-of-the-art applications. ISO 9001 certification provides a further guarantee of the excellence of our processes.

proprietà tipiche
method
unit
Density
ISO 1183
Kg/dm³
Elongation at break
EN 12803
%
Hardness Sh A
ISO 868
Shore A
Hardness Sh D
ISO 868
Shore D
Tensile strenght
EN 12803
MPa
Abrasion resistance
EN 12770
mm³
Tear strenght
ISO 34
KN/m
Compression set 22h/70¬į C
ISO 815
%
Compression set 70h/23¬įC
ISO 815
%
Glass transition temperature (Tg)*
DMA
°C
processo
Calendering
Extrusion
caratteristiche
Semi trasparent / Opaque
FDA 21 CFR177.1680
FDA 21 CFR177.2600
EU 10/2011
Trasparent
350 D 55 WPW
1,22
400
48
55
30
155
378 A 51 20
1,18
580
78
45
50
80
-31
378 A 55 20
1,18
550
80
50
30
95
-30
380 A 10 25
1,19
540
80
45
35
105
-40
387 A 10 25
1.2
500
87
50
35
115
-40
387 A 51 20
1,19
510
86
50
50
100
-28
389 A 10 25
1.21
470
90
55
30
125
-35
394 A 51 20
1,19
410
92
55
40
120
-20

• Very good friction and scratch resistance
• High dimensional stability
• Good tensile, tear and sheer strength
• High elasticity and flexibility
• Good resistance to oils, greases and many solvents
• Good resistance to low temperatures
• Absence of halogens
• Possibility of creating matt and glossy surfaces
• High process speed
• High hydrolysis resistance
• Availability of high flame resistance products
• Very good welding capacity
• Wide range of hardness
• Food approved grades
• Possibility of providing grades with tailored fluidity
• Recyclability

TPU is a hygroscopic polymer and the moisture absorbed affects its processability and the physical-mechanical properties
of the extruded/molulded articles.
The granules must be dried before use by using fan ovens, vacuum driers or dehumidifying air driers.
The percentage of moisture in the granule must be less than 0.05%.
Like TPU any masterbatches should also be dried separately from the TPU before being mixed. For the drying parameters
(time and temperature), please see our technical datasheets.
The exposure of TPU to the air for even just a few hours means moisture absorption and forces pre-drying once again.

Epaflex TPUs must be stored in a dry place at a room temperature preferably around 20° C and in any case not at a
too high or too low temperature preferably in a ventilated, cool room.

Epaflex TPUs come in various packaging such as: 25 kg aluminized bags and 600 kg. or 1000 kg. octabins.

Epaflex TPUs can be coloured with masterbatches.
Specific TPU-based masterbatches are recommended.
Like TPU, masterbatches should also be dried separately from the TPU before being mixed with it.

Processing waste and scraps can be re-used after having been re-granulated. In this case it is worth checking the absence of
impurities and ensuring that the product has not undergone heat degradation. The re-granulated product (like virgin TPU) should
always be dried before being re-used.
We suggest using re-granulated TPU blended with fresh granules at a percentage of no more than 25%.

For transforming our extrusion grade TPU we recommend the use of standard 3-stage single-screw extruders with “general
purpose” constant pitch screws (1 D) whose diameter is between 40 and 60 mm and L/D ratio between 20:1 and 30:1.
The compression ratio can range from 1:2 to 1:3.
In order to prevent the product from heat degradation the space between screw and cylinder must be between 0.1 and 0.2 mm
and the dies used must be designed so that there are no areas in which the material can stagnate.
We discourage the use of perforated disks and packets of filters.

Loactaion

address

Via Circonvallazione Est, 8,

27023 Cassolnovo PV, Italy

Phone

contacts

Phone: (+39) 0381 929521

Fax: (+39) 0381929523

Email

email

epaflex@epaflex.it

 

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Epaflex Polyurethanes Spa - Societ√† Unipersonale - Cap. Soc. ‚ā¨ 1.000.000 i.v. - Sede legale: L.go Isabella d'Aragona 4, 20122 Milano.
Registro Imprese Milano 02144860968 - Rea Pavia 260624 - Rea Milano 1512571 - P.I. 11965210153 - C.F. 02144860968

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