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Forprene mats

Forprene ® (TPV)

Thermoplastic Vulcanizate Elastomer
Forprene® is a Thermoplastic Elastomer (TPE) and more precisely it is a Vulcanised Thermoplastic Elastomer (TPV).
It is made of an elastomeric phase (dynamically vulcanized EPDM) which is deeply dispersed in a polyolefinic thermoplastic matrix, whose combination determines a real plasto-elastomeric alloy characterized by high performances and extremely easy processability.
The thermoplastic matrix allows Forprene® to be processed in an easy, inexpensive way by means of traditional technologies used for thermoplastic materials, and to be fully recyclable, while its elastomeric phase features typically rubber-like specifications such as elastic recovery and softness.
The extensive Forprene® product family features an exceptionally wide range of specifications in just one single product:
  • Wide hardness range, from 20 ShA to 60 ShD
  • Service temperature ranging from -40 °C to 130 °C
  • Typical density <1 g/cm3
  • High elastic recovery within a wide temperature range
  • Excellent resistance to UV ageing, ozone and weathering
  • Excellent resistance to several chemical agents, i.e. bases, acids, alcohols, detergents, water solutions, solvents etc.
  • High fatigue resistance
  • High thermal and electric insulation values
  • Good abrasion resistance
  • Specific rheology for each type of process
  • Excellent colorability for some grades

Special grades featuring the following specifications are also available:
  • Flame resistance (UL 94-V0)
  • Additional protection against heat and UV ageing
  • Protection against copper
  • Low fogging value
  • Low friction coefficient
  • High abrasion resistance
  • RAL-GZ 716/1 approval, Class IV (building industry)

AUTOMOTIVE

  • Under the hood: manifolds and air ducts, gaiters for suspensions and gearboxes, cable guides and battery connectors
  • Seals: door weatherstrips, glass encapsulation, window lickers
  • Passenger compartment: air vents, buttons, mats, boots for gearshift and handbrake levers, door handles
  • Shields and guards: fuel line covering, dampers guard, spoilers, side bumpers, bumpers and mudguards components

BUILDING

Extruded seals for doors and windows, simple or co-moulded hydraulic seals

HOUSEHOLD APPLIANCES

  • Washing machines, tumble driers and dishwashers: anti-vibration mounts, inlet pipes and exhaust manifolds, filter housings seals, drum suspensions bushes, door seals
  • Refrigerators: compressor suspensions

TOOLS

Grips for pliers, screwdrivers, hammers, drillers, paint brushes

ELECTRICAL EQUIPMENT

Sheaths for condensers, plugs and loose sockets, special cables requiring good electrical insulation properties, UV-resistance, good thermal resistance and low specific gravity

MISCELLANEOUS

Wheels, drive belts, high/low pressure pipes, mats for motor scooters, O-rings.

Forprene® is particularly suitable for co-moulding and co-extrusion with polypropylene (PP) and its compounds. It can be coupled with the following SO.F.TER. compounds: Polifor® (PP), Forflex® (TPO).

Forprene® can be processed through typical thermoplastics technologies, such as injection-moulding, extrusion, blow-moulding, calendering and thermoforming.
Normally Forprene® does not require drying before processing, apart from some special grades.

PLASTICIZING SCREW: polyolefins screws having L/D ratio ≥ 20 and compression ratio ranging from 2.5 to 3.5:1 are the most suitable
PLASTICIZING SPEED: high
INJECTION SPEED: medium-high
INJECTION PRESSURE: medium
RUNNERS: it is advisable to use runners which are as short as possible, having a circular section and a gradually decreasing flow-through diameter.
INJECTION POINTS: usually having circular section and diameter ≥ 0.7 mm. We recommend not to use injection points having a diameter <0.3 mm without prior selection of the appropriate grades to be agreed with SO.F.TER Technical Service.
AIR VENTS: the mould should be provided with appropriate air vents (0.03 - 0.05 mm diameter)
DRYING: usually not necessary

INJECTION MOULDING INDICATIVE TEMPERATURES:
Hardness < 55 ShA: 1st Zone 150 °C | 2nd Zone 160 °C | 3rd Zone 170 °C | Nozzle 175 °C | Mould 20-40 °C
Hardness 55-85 ShA: 1st Zone 160 °C | 2nd Zone 170 °C | 3rd Zone 180 °C | Nozzle 185 °C | Mould 20-40 °C
Hardness > 85 ShA: 1st Zone 170 °C | 2nd Zone 180 °C | 3rd Zone 185 °C | Nozzle 190-200 °C | Mould 20-40 °C
PLASTICIZING SCREW: polyolefins screws having L/D ratio ≥ 24 and compression ratio 3:1 are most suitable
DIE: a land of < 10 mm is advisable
BREAKER PLATE: 60 Mesh
DRYING: usually not necessary

EXTRUSION INDICATIVE TEMPERATURES
Hardness < 75 ShA: 1st Zone 160 °C | 2nd Zone 170 °C | 3rd Zone 180 °C | Head 180 °C | Die 170 °C
Hardness > 75 ShA: 1st Zone 170 °C | 2nd Zone 180 °C | 3rd Zone 185 °C | Head 195 °C | Die 185 °C
PLASTICIZING SCREW: polyolefins screws having L/D ratio >= 24 and compression ratio 3:1 are most suitable
DRYING: usually not necessary

BLOW MOULDING INDICATIVE TEMPERATURES
Hardness < 75 ShA: 1st Zone 160 °C | 2nd Zone 170 °C | 3rd Zone 180 °C | Head 180 °C
Hardness > 75 ShA: 1st Zone 170 °C | 2nd Zone 180 °C | 3rd Zone 185 °C | Head 195 °C
Forprene® is a fully recyclable material and it can be reused after regrinding. The user shall always verify that the compound obtained by mixing virgin and reground material is suitable for the specific application and meets the requirements.
This product should be stored in a covered facility and kept away from moisture and heat
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