TPU - Epaline series 700 polyether base

TPU for extrusion

Epaflex?s Epaline series includes products developed specifically for extrusion and calendering based on PTMG polyethers. Whether they be belts, pipes, wires, cables, films or profiles, Epaflex has the product for you. Series Epaline 700 includes TPUs based on PTMG Polyethers with superior physical and mechanical properties , excellent resistance to hydrolysis and microbial attack, and guarantee a great flexibility even at low temperatures. Series Epaline 700 is produced with a hardness range between 75 Sh A and 95 Sh A. Thanks to Epaflex's production technology that permits significant batch to batch reproducibility, we are able to produce with highly accurate MFI/MVR ranges.


proprietà tipiche
method
unit
Density
ISO 1183
Kg/dm³
Hardness Sh A
ISO 868
Shore A
Hardness Sh D
ISO 868
Shore D
Mod 50%
EN 12803
MPa
Mod 100%
EN 12803
MPa
Mod 300%
EN 12803
MPa
Elongation at break
EN 12803
%
Tensile strenght
EN 12803
MPa
Tear strenght
ISO 34
KN/m
Abrasion resistance
EN 12770
mm³
Glass transition temp. (Tg)*
DMA
°C
processo
Injection molding
Extrusion
caratteristiche
Semi trasparent / Opaque
Trasparent
FDA 21 CFR177.1680
FDA 21 CFR177.2600
EU 10/2011
Burning behavior V2 (UL 94)
Burning behavior V0 (UL 94)
775 A 15 10 W
1,14
75
500
30
50
30
- 45
780 A 15 15
1,11
80
4
5
8.5
600
45
70
30
-40
785 A 15 15
1,11
85
5.2
6.3
11
550
45
85
30
-39
785 A 15 10 W
1,16
85
580
30
60
40
-40
790 A 15 15
1,13
90
8
9.5
22.5
500
50
100
30
-35
795 A 15 15
1,14
93
9.5
12
28
450
45
110
30
-30

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.


Machines with a clamping pressure of no less than 150 tons and
injectors with three-stage screws of a diameter between 40 and
60 mm, and an L/D ratio between 20:1 and 30:1 are
recommended for injection moulding.
The use of screws with a diameter exceeding 65 mm and/or with
a high compression ratio is not recommended.
In order to avoid thermal degradation of the product (local
overheating of the material), it is essential to eliminate all the
possible points where stagnation may occur and check that the
nozzle is heated in a uniform manner for its whole length.

• 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%.

• Spiral Hoses
• Pneumatic Hoses
• Cable jacket
• Hydraulic tube jacket
• Profiles
• 3D filaments
• Conveyor belts
• Tooth belts
• Films
• Mechanical items
• Industrial components
• The mining industry
• Consumables
• Wheels, rollers
• Transmissions
• Transport
• Agriculture and gardening
• Automotive components
• 2K moulding
• Outdoor application
• Compound

Loactaion

address

Via Circonvallazione Est, 8, 27023 Cassolnovo PV, Italy

Phone

contacts

T. (+39) 0381929521

F. (+39) 0381929523

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Epaflex Polyurethanes Spa - Società Unipersonale - Cap. Soc. € 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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