Complex comprising a drylaid veil of glass fibres, and a nonwoven fabric of organic fibres
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United States of America Patent
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Aug 19, 2008
Grant Date -
Jan 4, 2007
app pub date -
Feb 6, 2004
filing date -
Feb 11, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A process for preparing a complex sheet including a layer of drylaid glass fibers and a layer of organic fibers. The process includes mechanical needling or fluid entanglement, e.g. hydroentanglement, of a nonwoven fabric of continuous organic fibers and of a veil of non-preconsolidated continuous glass fibers, the nonwoven fabric of organic fibers and the veil of glass fibers being juxtaposed and needles 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 bilayer. The so obtained complex fibrous structure shows a low tendency to delaminate and can be impregnated with asphalt or bitumen, and can be used in the field of roofing, sealing covering, or membranes.
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Family
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Cited Art Landscape
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