A New Generation Thermoplastic Composite
Curv® is an outstanding new material that
combines the versatility of a 100% thermoplastic
with the high performance of a fibre reinforced composite.
Curv® captures the exceptional mechanical properties of highly
oriented polypropylene tapes in a self-reinforced polypropylene
matrix. High stiffness, high tensile strength and outstanding impact
resistance provide the opportunity to make parts with unprecedented
properties in a 100% PP thermoplastic.
The Technology Behind Curv®
In a unique and patented process, highly drawn thermoplastic
tapes are heat treated to selectively melt every surface. The melted material
bonds the tapes together to give a single material type with molecular
continuity between phases. In short, the material properties are enhanced
through molecular orientation, resulting in "self reinforcement".
Hot Compaction Technologie
How Curv® is Made
Curv® is a thermoplastic composite in which highly drawn
tapes are bonded together in a matrix of the same material. Not
surprisingly, the process begins with the manufacture of the tapes from an
extruded polypropylene film. The drawing, or stretching process is what gives
the tapes their exceptionally high stiffness and strength. The next stage of the
process is to
weave the tapes into fabric which eases handling and gives
complete balance to the end product.
The final part of the process feeds fabric into a specially designed
double belt press equipped with precise control of temperature and pressure. Here the
surface of every tape is partially melted to create a matrix to bond the tapes
into a totally new structure. After cooling the consolidated sheet is slit to
the required width, cut to length or rolled according to customer needs.
Tailor made solutions
The highly controllable yet flexible production line allows
the incorporation of additional materials during the manufacture of Curv® to
create hybrids with special properties. Examples include a core of glass
reinforced polypropylene to give extra stiffness without sacrificing impact
properties and surface finish, high performance fabrics with special
anti-ballistic properties, textured surfaces and surface films to promote
adhesion or painting, etc. The
production line may also be used for the toll
manufacture of other materials where precise control of temperature is required.
Please contact us to discuss requirements.
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