Tape laying

Homogeneous exposure - controlled heating - sped-up process flow

The process

The tapes are from unidirectional thermoplastic continuous filaments that are partially pre-impregnated with adhesive resin.  Like a tape, they are rolled onto a reel and this is how they are integrated into the manufacturing system. Its feed unit draws the tape from the role and a robot places it on the work platform or the semi-finished component in the required position. There, it is melted by heating with a laser to increase the grip of the adhesive. In this way, and step by step, exactly-contoured continuous filament structures with high firmness are established.

The process advantages of the diode lasers

The biggest advantages of Laserline's diode lasers are their homogeneous intensity distribution in the focus which can even be optimized with special optics, and a precise temperature regulation which enables controlled melting. Together, both make a direct completion of the component possible and thus speed up the process significantly. 

Application examples

Tape wrapping of pipes

At the tape wrapping of pipes, the thermoplastic band is laid around a preform and melted. The process requires a quick and (regarding the exposure area and exposure time) an exact controlled heat input. With Laserline's diode lasers, this goal can be reliably achieved. Customer individual homogenization optics that can be integrated into the head of a tape laying robot as well coaxial multi point temperature regulations guarantee a gentle heating of the material. Tape wrapping on the basis of diode lasers can achieve process speeds of several meters per minute and is applicable with just about any component geometries.

Since 2009, Laserline's diode lasers are used by the AFPT GmbH for manufacturing CFK mass-produced components. With special homogenization optics, tape laying speeds of several meters per minute can be reached at a very well-processed efficiency.