Abstract: Provided is a nonwoven material as base interlining in sarking, roofing, or coated sealing membrane with an improved isotropy of the material. The nonwoven material comprises a spunbond nonwoven of polyester filaments. The nonwoven has a tensile strength ratio of the specific tensile strength MD to the specific tensile strength CD between 1 and 1.5. The nonwoven material for bituminous roofing membranes has a preferential thermal dimensional stability (TDS), as well as a preferential thermal shrinkage behaviour. Further, a method is provided to manufacture a nonwoven material with an improved mechanical homogeneity. In addition, a bituminous roofing product comprising a nonwoven material according to the invention is provided. The bituminous roofing product is preferably a bituminous roofing membrane.

Abstract: The present invention relates to a cleanable 3D filter medium, a method for manufacturing said filter and the use of the filter. The filter medium according to the present invention comprises at least one textile layer being a non-woven of synthetic, organic polymer fibers. The nonwoven having an embossed pattern in which the nonwoven having at the non-embossed area a thickness D and at the embossed area a thickness d and the ratio d/D is the compression factor CF, said compression factor CF being in the range 0.2?FC?0.5. The filter medium according to the present invention can be cleaned and are used in filter systems for air/gas and liquid filtration, particularly in the motor vehicle industry, in air conditioning systems, passenger compartment filters, pollen filters, clean room filters, domestic filters, and as oil filters and hydraulic filters, thus removing solids from air/gas and liquids.

Abstract: Composite materials are disclosed, including honeycomb cores based on thermoplastic synthetic fiber non-wovens. The invention concerns honeycomb cores based on thermoplastic synthetic fiber non-wovens, a method for manufacturing the honeycomb cores, as well as composite materials containing such honeycomb cores.

Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.

Abstract: The present invention relates to a filter medium, a method for the manufacture thereof and the use of the filter medium according to the invention. The filter medium according to the invention comprises at least two textile nonwoven layers which are joined to one another by needling. The needled composite is then subjected to an aftertreatment so that the holes present from he needling are reduced by at least 50%.

Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.

Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.

Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.

Abstract: Composites made from at least two plies are described, where one of the outer layers is a layer comprising glass fibers, and in particular is a staple glass fiber nonwoven. The layers have been bonded to one another by needling, and the extent of this needling is such that some of the fibers of the organic nonwoven emerge from the surface of the glass fiber sheet. The composite is then provided with a binder by using a rotating roll for single-side application to the glass fiber surface. The composites are particularly suitable for producing bituminized prefabricated roofing and waterproofing sheets, and as backings for coatings, e.g. PVC coatings.

Abstract: The present invention provides non-woven laminate that is not subjected to final consolidation by a binder and the production thereof. The laminate includes at least one non-woven mat containing glass staple fibers pre-consolidated with a resin, and at least one non-woven layer of synthetic fibers. The synthetic non-woven layers and the pre-consolidated non-woven mat of glass fibers are bounded together by needling such that a portion of the fibers of the upper synthetic non-woven layer passes through the non-woven mat of glass fibers possibly through the underlying synthetic non-woven layer. The synthetic fibers are heat shrunken and the laminate is binder free.