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Thermostatic tpfl

An innovative product to be promoted

The TPFL® are dry prepregs made from slivers or yarns which combine in an homogeneous way reinforcing fibres and thermoplastic fibres (carbone/PA12, carbone/PEEk…).
Proposed on different forms, braids, UD, 2D and non-crimp multiaxial fabrics, they constitute a suitable preform to rapidly mould advanced composite parts.
The moulding systems which can be associated with the TPFL® are : compression, L.I.M. (Bladder Inflation Moulding), stamping, membrane forming, induction, Carbone Forgé® system…

Technical apsects

Strengths

Ease and short working process
High mechanical properties
Very low void content (<0,2%)
High drapability
Lack of volatile organic
Recyclable

Raw materials used

Carbone /PA12
Carbone / PPS
Carbone / Peek
Aramid : PA12
Preox
Carbone

Applications

Industrial
Sport & leisure
Aerospace
Medical

Compression molding

Compression molding is already used with TPFL® pellets
Development and characterization of “TPFL® flakes” is ongoing
Goal is to make HP composites with injection

Bladder inflation molding

Use of TPFL® braids :

Easy lay-up
No joints, no overlap
Possibility of evolutive sections, curved parts

Real applications : Sporting goods with Carbon/PA12 TPFL® braids. Typical cure cycle: >5‘, 10 bars, T° = Tf +30°C

Diaphragm forming

Key feature of TPFL® materials :

Fibers are slipping during the process
Yarns are elongating (Up to 20%)
Absence of wrinkles in the edges

Cold stamping

Techniques that is widely used for consolidated thermoplastics, allowing fast processing

When using TPFL® materials that are not consolidated, consolidation requires:

Pre-heating of the material to processing temperature, typically Tf + 30°C
Time to allow the polymer to flow and wet-out the fiber
Cooling down the material until the T°< Tg