Fusible fiber bonded layered product comprising layers of carrier and binder fibers
AssigneeHoechst Aktiengesellschaft
InventorFrank Mehdorn
Life of this patent
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Abstract
A layered product having a first layer formed from at least one fusible binder consolidated nonwoven material, which first layer contains both carrier fibers and binder fibers. The layered product also contains a sheet material second layer which is adhered to the fusible binder consolidated nonwoven layer by an adhesive layer formed from melted binder fibers present in the surface of the nonwoven layer which faces the sheet material layer. The layered product of the invention is useful for manufacturing bituminized roofing and sealing webs.
Claims24
A layered product comprising:
- at least one reinforcing sheet material layer,
- at least one fusible binder consolidated nonwoven layer containing binder and carrier fibers, and having at least one surface facing said at least one reinforcing sheet material layer, wherein said fusible binder consolidated nonwoven layer is multilayered and contains at least one layer having a major portion of continuous carrier fibers and at least one layer having a major portion of binder fibers, and the surface facing said at least one reinforcing sheet material layer is a layer having a major portion of binder fibers, and
- an adhesive layer between said sheet material layer and said nonwoven layer, the adhesive layer being formed from melted binder fibers on the surface of said fusible binder consolidated nonwoven which faces the surface of the sheet material,
- wherein said carrier and binder fibers have linear densities from 1 to 16 dtex, and the basis weight of the layered product is from 100 to 450 g/m.sup.2, rendering said layered product suitable for use as a construction material.
A fusible binder consolidated nonwoven based on carrier fibers which are made of polyethylene terephthalate and binder fibers made of a lower melting polyethylene terephthalate or polybutylene terephthalate comprising:
- at least three layers of which the center layer contains a major portion of continuous carrier fibers, and the two surrounding layers contain a major portion of binder fibers,
- wherein said carrier and binder fibers have linear densities from 1 to 16 dtex, and the basis weight of the layered product is from 20 to 400 gm.sup.2, rendering said layered product suitable for use as a construction material.
A layered product comprising:
- at least one reinforcing sheet material layer,
- at least one fusible binder consolidated nonwoven layer containing binder and carrier fibers, and having at least one surface facing said at least one reinforcing sheet material layer, wherein said fusible binder consolidated nonwoven layer is multilayered and contains at least one layer having a major portion of continuous carrier fibers and at least one layer having a major portion of binder fibers, and the surface facing said at least one reinforcing sheet material layer is a layer having a major portion of binder fibers, and
- an adhesive layer between said sheet material layer and said nonwoven layer, the adhesive layer being formed from melted binder fibers on the surface of said fusible binder consolidated nonwoven which faces the surface of the sheet material,
- wherein said carrier and binder fibers have linear densities from 1 to 16 dtex, and the basis weight of the layered product is from 100 to 450 g/m.sup.2, rendering said layered product suitable for use as a construction material, and the at least one reinforcing layer is a low or non flammable material selected from the group consisting of metals, fiber forming organic materials, and fiber forming inorganic materials.
Dependencies are inferred from the claim text.