Reinforced textile support with cellulosic fiber multi-filaments, particularly for bituminous membranes
AssigneePOLITEX s.a.s. di FREUDENBERG POLITEX s.r.l.
InventorMassimo Migliavacca
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Abstract
A reinforced textile support, particularly for bituminous membranes, made of at least one layer of polyester non woven web and continuous high modulus reinforcement yarns longitudinally set with respect to said layer. The reinforcement yarns consist of cellulosic fiber multi-filaments of the Lyocell type. The assembly is bound by mechanical needling or water entangling, stabilized by means of thermal treatment at a temperature of 200-250° C. and consolidated by means of a chemical binder.
Claims11
A reinforced textile support, particularly for bituminous membranes, comprising at least one layer of non woven web of synthetic fibers, and continuous high modulus reinforcement yarns longitudinally set in respect of said layer,
- wherein the reinforcement yarns have a Young modulus equal to or higher than 5 Gpa and equal to or lower than 25 Gpa,
- wherein the reinforcement yarns consist of Lyocell type cellulosic fiber multi-filaments that have a linear density comprised between 30 and 200 tex, and
- wherein every layer of the non woven web consists of continuous spun bonded polyester filaments or polyester staple fibers,
- wherein the polyester staple fibers have a linear density between 0.5 and 6 dtex.
Dependencies are inferred from the claim text.