TPU - Epamould series 600 polyester base

TPU for the footwear and compounding industry

PAFLEX was established as a system house specialised in producing polyurethane systems for the footwear industry. This tradition and vocation is reflected in the line of thermoplastic polyurethanes (TPU) designed and developed specifically for the footwear and compound industry. The thermoplastic polyurethanes manufactured by Epaflex are not only characterised by the particularity of the TPU, (wide range of hardness, flexibility and elasticity, resistance to oils, to fuels, to solvents and to chemical products), but also by a unique combination of properties, because they blend grip and rubbery hand to very low values of loss by abrasion and high values of tear resistance. The thermoplastic polyurethanes manufactured by Epaflex are, therefore, the materials which bridge the gap of characteristics between rubbers and common thermoplastic materials as well as offering excellent compatibility with numerous technopolymers and rubber. 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
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
ESD
Antistatic
No blooming
Trasparent
650 D 12
1.22
470
45
47
35
130
652 D 12
1.22
450
48
50
35
135
657 D 30
1.23
430
48
40
35
140
660 A 26
1.18
650
63
25
65
65
-30
660 D 12
1.23
370
57
48
40
165
660 D 30
1.23
400
52
45
35
160
662 D 30
1.24
370
55
50
35
180
665 A 26
1.18
650
65
30
75
65
-33
665 A 76
700
65
28
50
665 A 86
730
65
28
50
0
667 D 12
1.24
340
61
45
45
180
671 A 26
1.19
650
70
33
60
78
671 D 12
1.25
340
66
50
45
200
675 A 26
1.19
625
75
35
60
80
681 A 26
1.2
640
80
34
50
82
685 A 26
1.2
620
85
38
50
85
690 A 10
1.2
500
89
0
55
35
115
698 A 30
1.2
45
46
50
35
140

Soles for safety shoes
• Excellent adhesion to the PU
• Good resistance to oils and fats
• Good shear strength
• Excellent slip resistance (HFC)
• Availability of antistatic and ESD products

Soles and inserts for sports shoes
• Excellent flexibility even at the lowest temperatures
• Optimised TPU for perfect adhesion with medium hardness products (inserts)
• Quick cycle times
• Excellent dimensional stability
• Outstanding scratch resistance

Soles for high fashion shoes
• Excellent resistance to yellowing
• Excellent definition of the mould design
• Excellent softness and rubbery hand
• Easy moulding in several colours
• Absence of blooming effect

Soles for casual shoes
• Excellent sticking properties
• Excellent slip resistance
• Quick cycle times
• Excellent dimensional stability
• Easy moulding in several colours
• Absence of blooming effect

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%.

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.

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