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.

Abstract: A totally biodegradable and/or compostable soft cloth-like composite of totally biodegradable and/or compostable film and totally biodegradable and/or compostable nonwoven and method of manufacture. A totally biodegradable and/or compostable nonwoven fibrous web and a totally biodegradable and/or compostable film are laminated. The laminate is incrementally stretched to produce a totally biodegradable and/or compostable laminate that is softer than that produced when the biodegradable and/or compostable nonwoven web is bonded to the biodegradable and/or compostable film. The soft cloth-like features of the invention are desired in a number of applications including diapers, pants, surgical gowns, sheets, dressings, hygienic products, and the like.

Abstract: The invention relates to a process for the manufacture of a nonwoven web using filaments of melted polymers, of the type including the steps of spinning the polymer or polymers, of cooling, drawing and laying down fibers on a belt and of bonding said fibers by calendering in order to form said nonwoven web (15), which process furthermore includes a treatment (13, 14) of setting/adjusting the degree of crystallinity of and the internal tension in the fibers making up the nonwoven web. The invention also relates to the nonwovens obtained by the process and to the installations for implementing it.

Abstract: A fabric comprising at least two layers wherein at least one layer is an extensible, bonded non-woven composed of a fiber comprising multiple different polymers such as a fiber comprising isotactic polypropylene, polyethylene and a block or grafted polyolefin copolymer or terpolymer which is at least partially miscible with said polypropylene and polyethylene.

Abstract: Composite structure comprising one or more plies of nonwoven and one or more plies of film, these being manufactured from thermoplastics, wherein all the plies of nonwoven of which the structure is composed are totally manufactured from a polymer or a copolymer or a blend of polymers derived from lactic acid and wherein all the plies of film are totally manufactured from a polymer of the BAPE (biodegradable aliphatic polyester) type. The invention also relates to a process for manufacturing said composite structure.Application: Diapers, sanitary napkins, protective garments, surgical drapes and masks in the medical field and certain products for absorption and filtration, protection of plants in agriculture and mulching.

Abstract: Multicomponent thermoplastic continuous filaments are provided, including hollow core multicomponent filaments. The filaments are at least partially splittable into smaller filaments in the absence of mechanical treatment or application of high pressure water jets. The surface energy of the components can be controlled to control separation of the multi-component filaments. Sub-denier and micro-denier filaments of low orientation can be produced from relatively high molecular weight polymers to produce nonwovens of surprising strength, barrier, and cover.

Abstract: The invention is directed to composite nonwoven laminate fabric having differential softness and flexibility properties. The nonwoven laminate fabric includes a polypropylene meltblown web sandwiched between and bonded to a spunbonded web of polypropylene filaments and a spunbonded web of polyethylene filaments.