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    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
    745 D 15
    1.16
    41
    390
    45
    140
    35
    745 D 35
    1.16
    44
    400
    50
    140
    35
    752 D 35
    1.16
    50
    370
    45
    135
    35
    755 D 35
    1.17
    54
    350
    50
    140
    35
    756 D 15
    1.17
    55
    370
    45
    160
    45
    765 D 15
    1.15
    63
    300
    50
    165
    50

    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

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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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