Continuous production of structured composite panels

Jul 13, 2003 2 Replies

Hallo!



I am trying to find a way to continuously or at least "semi-continuously" produce really large composite panels (glass fiber/epoxy).



The problem is that these panels are not just profiles, but have a relatively complex geometrical structure to achieve certain mechanical properties. Thus, pultrusion is not an option. Another problem is that a given laminate lay-up is required. Typical processes for production of large parts (e.g. fiber spraying with short fibers) cannot be applied. Finally, the parts are too large for injection processes or autoclave processes.



I already tried searching on Google, but could only find production of large profiles by pultrusion (or related processes).



Any help would be appreciated



Andreas


Have you looked for "Filon"? It's only for lengthwise profiles, but could be adapted to intermittent pressing for three-dimensional profiles.

This is a difficult question! I can't offer a detailed process, but I would be thinking about first producing a dry glass preform to place the glass reinforcement where you need it. If you needed a lot of these it might be done by an automated textile process.

For molding you might consider a shell mold with a vacuum bag for compression.

RT

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