TPU - Epamould series 700 polyether base

TPU for technical moulding

Series 700 includes TPUs based on PTMG polyether with superior physical and mechanical properties , excellent resistance to hydrolysis and microbical attack, and very good flexibility even at low temperature. Series Epamould 700 is produced with a hardness range beetwen 80 Sh A and 55 Sh D.


proprietà tipiche
method
unit
Density
ISO 1183
Kg/dm³
Hardness Sh A
ISO 868
Shore A
Hardness Sh D
ISO 868
Shore D
Elongation at break
EN 12803
%
Tensile strenght
EN 12803
MPa
Tear strenght
ISO 34
KN/m
Abrasion resistance
EN 12770
mm³
Compression set 22h/70 C
ISO 815
%
Compression set 70h/23C
ISO 815
%
Glass transition temp. (Tg)*
DMA
°C
processo
Injection molding
caratteristiche
Semi trasparent / Opaque
Trasparent
FDA 21 CFR177.1680
FDA 21 CFR177.2600
EU 10/2011
780 A 15
1.11
81
570
38
85
30
785 A 15
1.11
83
550
40
90
30
35
23
-42
790 A 15
1.12
87
490
40
100
35
-40
745 D 15
1.16
41
390
45
140
35
756 D 15
1.17
55
370
45
160
45

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

• Mechanical items
• Industrial components
• The mining industry
• Consumables
• Wheels, rollers
• Transmissions
• Transport
• Agriculture and gardening
• Automotive components
• 2K moulding
• Outdoor application
• Compound

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 the granule 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 the 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 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%.

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