Abstract: A vent having a continuous, elongate mat having an upper face and a lower face, and having a first portion and a second portion. The mat includes a plurality of columns of patterned three-dimensional structures of a network of randomly convoluted polymeric filaments having a first density, at least one of the plurality of columns of patterned three-dimensional structures being provided in the first portion, and at least one other of the plurality of columns of patterned three-dimensional structures being provided in the second portion. The mat includes a throat portion between the first portion and the second portion, the throat portion having a network of randomly convoluted polymeric filaments of a second density different than the first density, a first cover layer covering an outer edge of the first portion, and a second cover layer covering an outer edge of the second portion.

Abstract: A fire retardant darkening screen for use in greenhouses is provided, the screen including a top fabric and a bottom fabric. The top fabric includes halogen-containing polymeric strips laminated with a light-reflective film or foil. The bottom fabric includes polyolefin tapes, preferably high density polyethylene tapes, the polyolefin tapes including a synergistic fire resistance composition.

Abstract: A drainage component having a continuous, extruded mat having an upper face and a lower face. The mat includes a plurality of patterned three-dimensional structures, each structure spaced from all adjacent structures, and the plurality of patterned three-dimensional structures are provided in a plurality of linear rows or columns in a first direction.

Abstract: A flow medium for distributing a resin in vacuum assisted resin transfer molding processes for manufacturing long, thick and more complex composite parts comprises a flow channel encapsulated by a layer of fibrous material, which provides a high volume flow of resin distributed in a timely manner in the mold.

Abstract: A method to manufacture a carrier material including a nonwoven layer of fibers and threads extending in the longitudinal direction of the carrier material includes the steps of supplying a nonwoven layer of fibers, supplying a scrim comprising weft threads including a polymer having a melting temperature equal to or less than the lowest melting temperature of the thermoplastic fibers of the nonwoven layer of fibers, and thermally bonding the scrim to the nonwoven layer of fibers.

Abstract: A primary carpet backing for latex free tufted carpets, including tufting yarns tufted into the backing, the yarns consisting essentially of a first thermoplastic polymer selected from a polyamide, a polyester or a polyolefin, the polymer having a first melting temperature, and wherein the back stitches of the tufting yarns have been at least partially melted for achieving tuft bind in the latex free tufted carpet after the melted back stitches have been cooled to room temperature, the primary carpet backing including at least a first layer of fibers, wherein the backing consists for at least 30 wt. % of one or more lower melting polymers of the same polymer family as the first polymer included in the tufting yarns and wherein each of the lower melting polymers has a melting temperature which is equal to or less than the first melting temperature.

Abstract: A fire retardant darkening screen for use in greenhouses is provided, the screen including a top fabric and a bottom fabric. The top fabric includes halogen-containing polymeric strips laminated with a light-reflective film or foil. The bottom fabric includes polyolefin tapes, preferably high density polyethylene tapes, the polyolefin tapes including a synergistic fire resistance composition.

Abstract: A primary carpet backing including at least a first and a second layer of fibers, characterized in that both the first and the second layer of fibers is a nonwoven layer of randomly laid fibers, that both the first layer of fibers and the second layer of fibers has a uniform composition throughout the layer, wherein the linear density of the fibers is in the range of 1 to 25 dtex, wherein both the first layer of fibers and second layer includes at least two different polymers and wherein at least one polymer included in the first layer is different from the polymers included in the second layer.

Abstract: A building structure includes a base structure (10), a thermal barrier layer (20) and an external layer (30). The thermal barrier layer may be a three-dimensional matrix of filaments. The filaments may be irregularly looped and intermingled in a highly porous, three-dimensional structure with a large open space. The filaments form a thermal barrier by reducing the physical contact between the external layer and the base structure. The filament material is low in conductivity, so little heat transfer occurs between the external layer and the filaments.

Abstract: A carrier material for vinyl floor covering, wherein the carrier material includes a nonwoven layer containing at least 50 wt. % of thermoplastic fibers and a scrim for eliminating wrinkles in the vinyl floor covering. The scrim includes weft yarns having a linear density of 28 tex or less. The carrier material prevents the formation of surface irregularities and printing errors in the vinyl floor covering.