COMPOSITE MATERIALS COMPRISING HONEYCOMB CORES BASED ON THERMOPLASTIC SYNTHETIC FIBER NON-WOVENS

摘要

Composite materials are disclosed, including honeycomb cores based on thermoplastic synthetic fiber non-wovens. The invention concerns honeycomb cores based on thermoplastic synthetic fiber non-wovens, a method for manufacturing the honeycomb cores, as well as composite materials containing such honeycomb cores.

主权项

1. Use of a spunbonded non-woven fabric based on thermoplastic organic synthetic fibers for manufacturing honeycomb core materials, wherein
a) the spunbonded non-woven fabric used has a weight per unit area between 50 and 500 g/m2, preferably between 100 and 300 g/m2, wherein the preceding information refers to a spunbonded non-woven fabric without any chemical binders and other additives, b) the spunbonded non-woven fabric used is made of fibers, which have a titer in the range of 1.0 to 20 dtex, preferably 1.5 to 10 dtex, c) the spunbonded non-woven fabric used comprises no chemical binders, d) the spunbonded non-woven fabric used comprises at least one thermoplastic binder, the melting point of which is at least 10° C., preferably at least 20° C., in particular at least 30° C. below the melting point of the fiber according to b), is however at least 170° C. so as to maintain the temperature resistance, e) the spunbonded non-woven fabric used has an air permeability in the range of 5-2000 l/m2 sec, preferably 100-300 l/m2 sec @ 200 Pa measured according to EN-ISO 9237.