COMPLEX COMPRISING A DRYLAID VEIL OF GLASS FIBRES, AND A NONWOVEN FABRIC OF ORGANIC FIBRES

摘要

The invention concerns a process for preparing a complex sheet comprising a layer of drylaid glass fibres and a layer of organic fibres, comprising the following steps: mechanical needling or fluid entanglement, e.g. hydroentanglement, of a veil of organic fibres and of a web or layer of non-preconsolidated glass fibres, the said veil of organic fibres and the said web of glass fibres being juxtaposed and the said needles respectively the fluid, water jets being sent from the same side as the veil of organic fibres, in order to make a bilayer; and then application of a binder to the bilayer. The so obtained complex fibrous structure shows a low tendency to delaminate and can be used in the field of roofing or sealing membranes.