Abstract: The present invention relates to the production of a non-woven material having high extensibility and comprising polymer fibers using mixtures with amphiphilic block copolymers as compatibilizers for preparing blends, as well as their production and use.

Abstract: The present invention relates to the perforation of nonwovens with a perforating roll and an opposing roll. The perforating roll and opposing roll form a gap, through which a nonwoven being perforated, is guided and perforated. The perforation apparatus comprises a feed device and a withdrawal device. The feed device is arranged such that the nonwoven being perforated advances first onto the opposing roll, before it enters the gap. The withdrawal device is arranged such that after leaving the gap, the perforated nonwoven remains on the perforating roll. Furthermore, a perforation method and a corresponding nonwoven structure are provided.

Abstract: The invention relates to polyolefin materials, in particular fibers, and/or filaments, and/or nonwovens, and/or nonwoven products made from at least one polyolefin and a melt additive containing a fatty acid ester, wherein a subsequent activation of the fatty acid ester contained in the melt additive occurs on the surface of the polyolefin materials by applying a formulation, which contains a silicone compound and a quaternary ammonium compound.

Abstract: A spunbond nonwoven fabric useful as a topsheet is produced from polypropylene filaments including a high level of reclaimed polypropylene, while maintaining a product quality, including superior formation, comparable to that obtained when using 100 percent virgin polymer. The spunbond nonwoven fabric is made with multicomponent filaments having at least two different polymer components occupying different areas within the filament cross section, and wherein one of the polymer components comprises reclaimed polypropylene recovered from previously spun polypropylene fiber or webs comprised of previously spun polypropylene fiber. In a specific embodiment, the filaments are sheath-core bicomponent filaments and the reclaimed polypropylene is present in the core component. The core of the bicomponent filament can be comprised of up to 100% reclaimed polypropylene.

Abstract: A nonwoven fabric is provided having a plurality of semi-crystalline filaments that are thermally bonded to each other and are formed of the same polymer and exhibit substantially the same melting temperature. The fabric is produced by melt spinning an amorphous crystallizable polymer to form two components having different levels of crystallinity. During spinning, a first component of the polymer is exposed to conditions that result in stress-induced crystallization such that the first polymer component is in a semi-crystalline state and serves as the matrix or strength component of the fabric. The second polymer component is not subjected to stress induced crystallization and thus remains in a substantially amorphous state which bonds well at relatively low temperatures. In a bonding step, the fabric is heated to soften and fuse the binder component. Under these conditions, the binder component undergoes thermal crystallization so that in the final product, both polymer components are semi-crystalline.

Abstract: The present invention provides an impact resistant sheet material that helps provide exterior walls of a building with resistance to impacts so that the building structure can meet building standards, such as the Miami-Dade County Large Missile Impact Test, for resisting impacts in high wind areas. In one embodiment, sheet material comprises an impact resistant layer that attached to fibrous substrate. The impact resistant layer provides impact resistance to the sheet material so that a wall structure employing the sheet material is able to successfully withstand an impact from a projectile comprising a 9 pound, 7 foot two-by-four (“2×4”) traveling at a speed of at least 34 miles per hour. The impact resistant sheet material may comprise a moisture vapor permeable, water-impermeable barrier layer having a hydrohead of at least 55 cm and a moisture vapor transmission rate of at least 35 g/m2/day. Such a sheet material is particularly useful in barrier applications, such as a house wrap.

Abstract: A moisture vapor permeable, water impermeable composite sheet material is provided which is suitable for use as a housewrap material, and is also useful for other applications such as tarpaulins, or as covers for automobile, boats, patio furniture or the like. The composite sheet material includes a nonwoven substrate and an extrusion-coated polyolefin film layer overlying one surface of the substrate. The nonwoven substrate is comprised of polymeric fibers randomly disposed and bonded to one another to form a high tenacity nonwoven web. The nonwoven substrate has a grab tensile strength of at least 178 Newtons (40 pounds) in at least one of the machine direction (MD) or the cross-machine direction (CD). The extrusion coated polyolefin film layer is intimately bonded to the nonwoven substrate. The film layer has micropores formed therein to impart to the composite sheet material a moisture vapor transmission rate (MVTR) of at least 35 g/m2/24 hr. at 50% relative humidity and 23° C.

Abstract: The invention relates to a spun-bonded nonwoven fabric made of polyolefin filaments having a titer<1.6 dtex, the spun-bonded nonwoven fabric having a basis weight?18 g/m2, a waterproofness of <15 cm measured as a water column, and an air permeability of at least 230 m3/(m2·min), wherein the product of the air permeability and the basis weight is ?5000 g/(m·min).

Abstract: A nonwoven and a nonwoven fiber are disclosed. The fleece or fleece fiber include a polymer mixture. The polymer mixture includes a polyethyelene and a LLDPE. Various applications for the fleece are proposed.

Abstract: The invention provides a sheet material comprising bicomponent filaments having first and second polymer components that are arranged in substantially distinct zones within the filaments, with the first polymer component formed of a relatively lower melting polymer and the second component formed of a relatively higher melting polymer. The filaments of the nonwoven fabric layer are densely arranged and compacted against one another to form smooth, substantially nonporous opposite outer surfaces, and the nonwoven fabric layer are calendered such that the lower melting sheath polymer is fused to the contacting surface portions of adjacent filaments to impart strength and coherency to the nonwoven fabric layer. The sheet material has excellent breathability and liquid barrier properties and may be useful in house wrap, medical garments, and envelope applications.

Abstract: The present invention concerns a spinneret plate (1) for manufacturing a nonwoven fabric, having multiple non-round holes, which are similar to trilobal or multiarmed holes (3) in particular, for polymer flow outlet to produce filaments, in which identical holes are positioned in rows offset relative to one another. At least a first row (2) has a positional arrangement of the holes that differs from the positional arrangement of a second row (7) of rows through rotation of the holes.

Abstract: Nonwoven fabric laminates suitable for use as semipermeable membrane supports are produced by forming a spunbond nonwoven fabric first layer of continuous thermoplastic polymer filaments; forming a wet-laid nonwoven fabric second layer of discrete length thermoplastic polymer fibers; and bonding the first and second layers in opposing face-to-face relationship to form a composite support, where the first and second layers define first and second outer surfaces of the composite support. The resulting semipermeable membrane supports provide an advantageous balance of properties, including smoothness, porosity, interlaminar adhesion, and flux properties.

Abstract: The present invention relates to a perforated thermoplastic structure comprising at least a first layer (8) and a plurality of perforations, which extend through the first layer (8). The perforations have a three-dimensional, preferably approximately conical or cylindrical shape (18). A second layer forms an inner surface (20) of the shape (18), whereas the first layer forms an outer surface (21) of the shape (18). The first layer contains a thermoplastic material, whose melting point is lower than a melting point of the thermoplastic material of the second layer.

Abstract: The present invention relates to perforation device for the manufacture of a perforated nonwoven material, whereby a prebonded nonwoven with embossing points is guided to a nonwoven perforation device, needles of a needle roller engage into the prebonded nonwoven and perforate it, and the perforated nonwoven material then undergoes further processing. A ratio is set between the number of needles to the number of embossed points of between 0.15 and 0.25 and a ratio of hole size to embossed point size of between 0.15 and 0.25.

Abstract: This invention relates to a spunbonded nonwoven made of thermoplastic material, which exhibits a filament diameter of less than 1.0 ?m. The filaments are made from bursted fibers, whereby the filaments exhibit a length of at least five centimeters and are connected to one another at discrete points.

Abstract: The invention is a cleaning material for cleaning printing machines. The cleaning material is comprised of a fabric that has been impregnated with a cleaning composition having branched chain monobasic and/or dibasic esters that contain 2-ethyl hexanoate. The cleaning composition can also include additional low volatility solvents and surfactants. A particularly useful cleaning composition is comprised of isobutyl stearate in combination with branched chain monobasic and/or dibasic esters that contain 2-ethyl hexanoate. The cleaning material can be wound onto a roll that can be adaptable to fit commercially available printing machine cleaning devices.

Abstract: The present invention relates to a multilayer product 1 having at least one first layer 2, an absorbent intermediate layer 3 and a second layer 4, whereby at least the first layer 2 contains at least one first material 5 and one second material 6. The first layer 2 and/or the second layer 4 is at least partially liquid permeable. The first material 5 has a higher melting point than the second material 6, with the second material 6 creating a bond to the second layer 4.

Abstract: A multilayer thermally bonded nonwoven fabric which is particularly useful as a liner in an absorbent product is described. The fabric includes at least two prebonded nonwoven webs having a multiplicity of intralaminar bonds bonding the fibers of the prebonded nonwoven webs together. The prebonded webs are secured together to form the fabric of the invention by a plurality of interlaminar thermal bonds formed of discrete areas of compressed and fused fibers of the prebonded webs.

Abstract: A nonwoven fabric formed from filaments made from a polymer derived from L- and D-lactic acid. The nonwoven fabric is biodegradable and especially suitable for use in disposable hygiene products.

Abstract: The invention relates to a nonwoven based on thermoplastic filaments, wherein all the filaments of which it is composed are completely manufactured from a polymer or from a blend of polymers derived from lactic acid, said nonwoven being permanently hydrophilic.The filaments of which the nonwoven according to the invention is composed are continuous filaments.They may furthermore be subjected to a hydrophilic treatment using a surface-active agent.