TPU - Epamould series 200 polyester base

TPU for technical moulding

Thermoplastic polyurethane is an innovative technical material with characteristics which make it suitable for many applications in the plastics industry. Technical injection moulding is one of the most widely used and varied applications in which Epaflex TPU products find their natural habitat thanks to their versatility and range of use. Epaflex produces TPU products which guarantee constant quality and ease of processing which meet the needs of the most complex and state-of-the-art applications. In addition to the traditional features of TPU such as the wide spectrum of hardness, flexibility and elasticity, resistance to oils and greases, to combustible substances, solvents and chemical products and its well documented resistance to abrasion, there are also other properties which are particularly important for moulding. 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° C
ISO 815
%
Compression set 70h/23°C
ISO 815
%
Glass transition temperature (Tg)*
DMA
°C
processo
Injection molding
Extrusion
caratteristiche
Semi trasparent / Opaque
FDA 21 CFR177.1680
FDA 21 CFR177.2600
EU 10/2011
Pigmented
Trasparent
250 D 12
1,2
470
45
47
35
130
252 D 12
1.22
450
48
50
35
135
260 A 56
1.18
700
66
30
45
70
-33
260 D 12
1.23
370
57
48
40
165
265 A 56
1.18
650
69
32
45
72
40
15
-32
267 D 12
1.24
340
61
45
45
180
271 D 12
1.25
340
66
50
45
200
275 A 10
1.19
640
75
40
50
100
-32
280 A 10
1,19
550
80
45
35
103
285 A 10
1.19
540
83
45
35
105
42
29
-33
290 A 10
1.2
500
89
50
35
115
43
27
-35
292 A 30
1.2
430
92
50
30
130
-35
292 A 83 W F 40
1.21
500
92
52
35
125
295 A 10
1.21
470
92
45
55
30
125
45
25
-35
295 A 83 W
1.21
470
92
53
30
125
40
20
-33

• Excellent flexibility even at very low temperatures
• High hydrolysis resistance
• High resistance to microbial attack
• Excellent tensile and tear strength
• High impact resistance
• Compatibility with other materials
• Quick cycle times
• Ease of extraction
• Excellent dimensional stability
• High resistance to yellowing
• Excellent definition of mould design
• Easy moulding in many colours
• Excellent scratch resistance
• Absence of plasticizers
• Good acoustic insulating properties
• Excellent vibration absorbing properties
• Recyclability

TPU is a hygroscopic polymer and the moisture absorbed affects its processability and the physical-mechanical properties of the
moulded articles. The granules must be dried before use by using fan ovens, vacuum driers or dehumidifying air driers.
The percentage of moisture in granules must be less than 0.05%.
Like TPU, any masterbatches should also be dried separately 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 or vacuum 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 for the presence
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%.
Il rigranuato, al pari del TPU vergine, và sempre essiccato prima del suo riutilizzo.
Si suggerisce di usare il TPU rigranulato in taglio con i granuli vergini in una percentuale non superiore al 25%.

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 heat 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.

• Mechanical items
• Industrial components
• The mining industry
• Consumables
• Wheels, rollers
• Transmissions
• Transport
• Agriculture and gardening
• Automotive components

Loactaion

address

Via Circonvallazione Est, 8, 27023 Cassolnovo PV, Italy

Phone

contacts

T. (+39) 0381929521

F. (+39) 0381929523

Social

social

Linkedin

Facebook

 

logo-footer.png

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

Cerca

english