Patent ID: 7669303
Filing Date: 2010-03-02
Classification: B32B,D04H,D06N,E04D,Y10T

Abstract:
1. A process for preparing a complex sheet consisting of a principal layer of drylaid glass fibers, a principal layer of organic fibers, and optionally an intermediate layer of yarns or a grid placed between two principal layers or within one or both principal layers, the process comprising: fluid entanglement with a water pressure ranging from 50 to 600 bar, of a nonwoven fabric of continuous organic fibers and of a veil of non-preconsolidated continuous glass fibers 10 cm to 1 m in length, the nonwoven fabric of organic fibers and the veil of glass fibers being juxtaposed and the fluid water jets being sent from the same side as the nonwoven fabric of organic fibers, to make a sheet; and then application of a binder to the sheet.