Abstract: In an IC card and a manufacturing method therefor, an adhesive is applied between core layers in the vicinity of an opening in which an IC module is placed. The core sheet layers held between adhesive layers can easily be deformed when heat and pressure are applied. Therefore, a gap formed between the card substrate and the IC module is filled. Furthermore, the gap from the IC module is narrower at the corners of the IC module than conventionally shaped openings. As a result, gaps at the corners of the IC module after integral molding are prevented. Therefore, the gap between the IC module and the card substrate can be reliably filled during molding.

Abstract: A thermal insulation system 1, especially for low-temperature containers, formed of at least two multilayer mats 4 and 5, which are made from fiber mats 8 and are separated by a gas-tight film 6. The inner multilayer mat 4 arranged directly on the container wall 2 is filled with a gas, which cannot condense during operation and whose pressure can be adjusted to the actual ambient pressure. The outer multilayer mat 5 is filled with the ambient gas, generally air or nitrogen, and the pressure is adjusted to the ambient pressure. The multilayer mats 4 and 5 may be further subdivided by reflecting films 7 that are permeable to gas.

Abstract: A laminated glazing unit having improved impact strength comprising a), b) and c) in sequence: a) a glass layer; b) a plasticized layer containing partial polyvinyl butyral; c) another glass layer; and d) means, preferably a multiplicity of spaced projections, dispersed on the surface of at least one of the foregoing layers, preferably the plasticized layer, capable of resisting adhesion to the layer with which it is in contact, the area without said dispersed means (e.g. between projections) of the layer having such dispersed means having high affinity for adhesion to the layer with which it is in contact, such laminated glazing at a specific pummel adhesion having a greater mean break height than that of a laminated glazing containing layers a) b) and c) but without d). The dispersed means may be on the surface of a glass layer but is preferably on the plasticized layer.

Abstract: A composite extensible material useful for making a clothing article comprising a first film layer resistant to penetration by liquid water by permeable to water vapor adhered at discrete securement locations to a second layer of water vapor vapor permeable extensible sheet material. The adherence between the two layers is such that when the composite material is under zero stretching load and resting on a flat surface the second layer is substantially flat and the first layer is corrugated, ruched or puckered. The adherence is also such that the composite material can be stretched by at least 10% in at least one direction by a load less than that required to stretch the first layer by the same amount on its own.

Abstract: A lining fabric comprising a first nonwoven layer composed of microfibers produced by melting-blowing, and at least one second nonwoven layer composed of fibers or filaments and an adhesive layer distributed in spots. The first layer and the second layer being bonded, on the one hand, partially by the entanglement of some of the fibers thereof by the application of fluid jets; on the other hand, completely by the base of the spots of the adhesive layer which keeps the fibers interlaced, thus ensuring the cohesion of the assembly as a whole.

Abstract: A fire-resistant composite lining for a garment includes a textile layer of heat-stable fibers and a waterproof and breathable film. The film being spot-bonded onto a face of the textile layer and intended to be on the external surface of the garment. The lining is reinforced non woven material associated with the textile layer by needle-punching and ultimately constitutes the internal surface of the garment.

Abstract: A textile laminate consists of a nonwoven padding material of low specific volume and of a filament-reinforced nonwoven, the laminate having a total thickness of more than 2 mm. The nonwoven padding material has a raw density of less than 0.025 g/cm.sup.3 and a thickness of 1.6 to 60 mm. The filament-reinforced nonwoven is composed to 10 to 60 g/m.sup.2 of a fleece with a raw density greater than 0.35 g/cm.sup.3 and of 3 to 10 g/m.sup.2 reinforcing filament and is laminated onto the nonwoven padding material.

Abstract: This invention provides a transfer sheet comprising a release sheet, a sticker layer disposed on the releasable side of the release sheet, a main transfer layer superposed on the sticker layer, the sticker layer consisting of a non-adhesive resin layer in the form of a grating and an adhesive resin layer disposed in interstices of the grating.

Abstract: A composite resealable outsert and method for making the same, which produces a pressure sensitive applied resealable and clear laminate protected multi-fold outsert that provides product manufacturers with a convenient and economical device to satisfactorily meet increasing requirements for accommodating close retained association of previously printed product use and precautionary information outserts directly with the product by affixment and re-use protected attachment thereof either to the product container or the product itself rather than by the otherwise usual and typical method of simple loosely inserted outsert deposit within the product container.

Abstract: A wiper for use in cleanrooms and other controlled environments is made using a knit fabric tube rather than a fabric sheet. The fabric tube is knit with a diameter approximately equal to the preferred wiper dimension and is presented directly to an apparatus for sealing and cutting. A sequence of spaced strips are fused into the fabric tube perpendicular to its length. Individual two ply wipers are separated from one another along a cut line midway in the strips. The wipers are characterized by lower costs due to fewer fabrication steps and a 50% reduction in the number of wiper edges requiring treatment.

Abstract: The invention is directed to composite nonwoven fabrics comprising a hydrophobic nonwoven web, a nonwoven web of thermoplastic meltblown microfibers and a hydrophilic nonwoven web comprising staple fibers. The nonwoven web of thermoplastic meltblown fibers is sandwiched between the hydrophobic nonwoven web and the hydrophilic nonwoven web and all of the layers are thermally bonded together via discontinuous thermal bonds distributed substantially throughout the composite nonwoven fabric.

Abstract: A moderately flexible laminate sheet article 30, capable of simultaneously cleaning both inner surfaces of slots and cavities of credit card readers, fax machines and the like, and in particular the scanners, sensors and printers residing therein, having a three layer structure, comprising two outer layers 21 and 23, that provide outer surface cleaning means, and comprising natural or synthetic, woven or nonwoven fibers, spot bonded to a moderately flexible, resilient center layer 22, comprising natural or synthetic, woven or nonwoven fibers, film or foam, wherein said spotbonds comprise 2% to 99% of bondable area. The laminate sheet article 30 has sufficient stiffness and resilience to prevent its wrinkling, buckling, crumpling or kinking while in use, and has utility for cleaning surfaces in its dry, or when saturated with liquids, in its wet state.

Abstract: There is disclosed novel glass fiber particularly useful for preparing formed insulating articles having on the surface of the fibers an amorphous aluminum phosphate polymer wherein the polymer resiliently tacks the glass fibers together so as to provide regain of shape after deformation of the fibers as by compression. Also disclosed is a process for preparing glass fiber articles wherein the fibers are contacted with an ionic polymer which is then dehydrated to form an amorphous non-hygroscopic polymer.

Abstract: A breather package for surgical elements such as sutures or suture-needle assemblies having a layer of fibrous material and a layer of plastic material forming a pocket therebetween. Longitudinal heat seals and transverse top and bottom seals are provided which form the package. The layer of fibrous material is provided with longitudinal strips of release agent material through which the longitudinal heat seals are formed. An apparatus for forming such a package is also disclosed.

Abstract: A multi-layer fabric having greatly improved tearing resistance is obtained for canopies and tarpaulins and the like by the provision of two-layers of a woven textile fabric positioned on either side of a deformable reinforcing layer formed from wires having a high mechanical strength. The textile layers are bonded to the deformable reinforcing layer by a layer of material having a modulus of elasticity in shear allowing it to break when a force is exerted on the reinforcing wires, thus permitting movement of the wires within the fabric without breaking under the action of the force. Adhesive bonding layers join the outer fiber woven textile material to each other and to the wire loop layer to form a unified fabric structure. Thus, when it is attempted to cut or tear the fabric with a sharp instrument drawn across the surface thereof, the looped wires are displaced and bear successively against one another offering increased resistance until they stop the knife without breaking or tearing further.

Abstract: A gas capping liner system is described which encompasses a top channeled component and a bottom perforated layer component. The top channeled component has a plurality of alternating longitudinally extending channels. The channels are of two types, (1) structural for supporting the weight of overburden clay and topsoil above the liner and (2) gas-receiving, which permit the landfill gas to be collected. The perforated layer component is positioned such that the perforations are located above the gas-receiving channels.

Abstract: A panel type masking member comprising a foamed polystyrene panel made by expandable bead molding wherein said foamed polystyrene panel has traces of opening parts of breathing paths on both sides thereof wherein said trace(s) on at least one side is(are) dent(s), and a mold used for molding of said panel type masking member comprising a fixed molding part and a movable molding part wherein said movable molding part and said fixed molding part have opening parts of breathing paths on their surface(s) thereof and said opening part(s) of breathing path(s) of said movable molding part and/or said fixed molding part rise(s) from said surfaces thereof; are provided in the instant invention.

Abstract: A nonwoven laminate, having a barrier property, is made of at least one thermoplastic fiber layer bonded with a wet-laid fabric layer, made of a uniform distribution of cellulose fibers, polymeric fibers, and a binder, which is treated with a water-repellent finish. Alternatively, the wet-laid fabric layer can be made without the addition of any binders to form a tissue-type core fabric layer. In a preferred form, spunbond polyester fiber layers are ultrasonically bonded on each side of a wet-laid barrier fabric made of about 20% eucalyptus pulp, 45% staple polyester fibers of 1.5 denier, and 35% polyester fibers of finer denier of about 0.6 denier, which is bonded with an acrylic latex binder and treated with a water-repellent finish that includes a fluorocarbon compound. The resulting laminate has a desired drapability and soft hand.

Abstract: A lay-in ceiling panel structure, comprising a glass fiber ply, a gypsum board, and a highly perforated vinyl lamina. The ceiling panel structure having noise and sound transmission reduction coefficients in the range of 0.85 to 0.95 sabins and 0.35 to 0.39 dbs respectively. This structure also provides good fire resistance, space efficiency, and a lower surface that is washable and pleasing to the eye. In addition, the glass fiber ply is secured to the gypsum board by droplets of glue which are spaced 1 to 2 inches apart and which are applied 4 to 6 inches away from the outer periphery of the gypsum board. Applying the glue in this way allows the glass fiber ply and vinyl lamina to lay flat even if the board is warped by water leaks, humidity or age.

Abstract: A receptor sheet composite is provided for use in sheet fed electronic printers or the like which eliminates blanking or lost imaging area of a leading edge of image being formed on a transparency. The composite includes an oversized paper backing and a film adhesively secured to the paper backing and with a perforation line for easy removal. The excess length of the oversized composite compensates for the lead edge blanking which occurs in some prior art imaging of film sheets.

Abstract: A non-woven towpreg fabric and a method of production therefor. The non-woven towpreg fabric is fabricated from a plurality of flexible, multiply towpregs, comprising towpreg plies which comprise reinforcing filaments substantially wetout by a matrix forming material, which then are bonded together to form the fabric. The method of production for the non-woven towpreg fabric involves spreading the reinforcing filaments, coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion, forming the towpreg plies by heating the matrix forming material until the matrix forming material liquefies and coats the reinforcing filaments, cooling the towpreg plies in a manner while said towpregs remain substantially unconsolidated until the matrix forming material solidifies, overlapping a plurality of the towpreg plies, and bonding the towpreg plies together. Multidimensional fabrics, preforms and composite articles also can be formed by this invention.

Abstract: In a mat composed of a base cloth, a pile tufted thereto, and a rubber backing applied to the non-pile surface of the base cloth, a cotton-like layer composed of a woven cloth of a polyester textured yarn non-adherent to the rubber and a filament or staple which layer is needle-punched is used. In this mat, weakly adherent regions at which the woven cloth and the rubber portion contact each other and strong adhesive regions at which the cotton-like layer and the rubber portion content each other are formed in dots in a large distribution. Waving deformation during repeated use is prevented.

Abstract: A method of preparing porous fiber reinforced polymer composite sheets has been developed to allow a more efficient preheating of the sheel prior to molding and includes the steps of blending reinforcing fibers with resin matrix forming fibers to form a web. This web is then heated to a temperature wherein the resin matrix forming fibers melt and envelope the reinforcing fibers, tacking them together at crossover points. The resultant web can then be directly heated very efficiently for molding. This web is highly porous allowing rapid heating at moderate pressure differentials during subsequent preheat steps. The microstructure created when the resin matrix forming fibers are initially melted further enhances heating capability because the structure retains porosity during the subsequent heating step required for molding.

Abstract: Pressure-sensitive adhesive sheet material having the ability to be applied to paper and removed therefrom without lifting fibers or delaminating the paper. The otherwise conventional pressure-sensitive adhesive is applied to the backing by spraying, resulting in a non-repetitive pattern of adhesive islands.

Abstract: A laminated composite material containing sorbent particles which are protected from contact by liquids. The materials can be used in devices to sorb gases and vapors and are suitable for use in chemical protective clothing.

Abstract: There is disclosed a nonwoven fabric laminate formed from an olefin copolymer, olefin terpolymer, or a blend of olefin polymers. Particularly, the improved fabric laminate is formed from a polymer having a crystallinity of less than 45% and preferably between 31-35% and most preferably about 32%. The fabric laminates formed from layers that are spun-bonded or melt-blown have improved characteristics including higher tear strength, greater tensile energy, greater abrasion resistance, better fabric drape and softness, and less particulate emission. There is also disclosed a low particle emission, sterilizable garment for use in clean rooms, paint rooms, and operating rooms.

Abstract: An expandable braided product having greatly reduced tendency to splay at its ends when cut is provided by coating the braided product with a thin layer of elastomeric material which provides the desired anti-splaying property, while retaining the expandable characteristic whereby the product expands laterally when compressed longitudinally and when released returns to its original size and shape.

Abstract: A cushion structure whose resilience to compression, compression durability and recovery from compression are improved and which is free from bottom-hit feel, in the matrix of which an elastomeric conjugated fiber containing as one of the components a thermoplastic elastomer is dispersed and mixed and wherein amebic, all-directionally flexible heat-bonded spots formed at the crossing points of the conjugated fibers and semi-all-directionally flexible heat-bonded spots formed at the crossing points of the conjugated fibers with the non-elastomeric, crimped polyester staple fibers are scatteringly present and, in conjugated fibers present between any two adjacent, flexible heat-bonded spots, part of them contain at least one thick portion in the longitudinal direction.

Abstract: This invention provides a bulky nonwoven fabric made of thermoplastic resin filaments, which is soft and highly permeable to water and gas and effectively absorbs moisture as well as shocks.A nonwoven fabric according to the invention is made of fiber-like filaments of a thermoplastic resin material and comprises a base cloth layer made having densely distributed holes and a large number of cylindrical projections, each standing from the peripheral edge of one of the holes and made of fiber-like filaments similar to those of the base cloth layer and soft, its height being at least twice as large as the thickness of the base cloth layer.

Abstract: The invention is directed to a heat-shrinkable envelope composed of a heat-shrinkable component and a reinforcing component that is embedded in the heat-shrinkable component and has undulations or corrugations. The reinforcing component has special arrangements for stopping tears, such as the provisions of embossments or beads, the provision of holes, punctures and slots.

Abstract: A recording material comprising a base material and at least one polymer selected from the group consisting of a homopolymer of diallylamine, copolymers of diallyamine with (meth)acrylamide and optionally at least one other vinyl monomer having substantially no carboxyl group, and salts thereof which is contained in said base material or in a coating layer formed on said base material, on which an ink is printed with good initial coloring property and a printed image with higher resolution and improved water and light resistance.

Abstract: A nonwoven composite structure is provided which has three melt-extruded nonwoven layers, each of which includes at least a portion of a nonwoven web. The first nonwoven web is adjacent to one surface of the second nonwoven web and the third nonwoven web is adjacent to the other surface of the second nonwoven web. The first and third nonwoven webs consist of continuous and randomly deposited filaments having an average filament diameter in excess of about 7 micrometers. The second nonwoven web consists of substantially continuous and randomly deposited microfibers having an average diameter of from about 0.1 to about 10 micrometers. The microfibers of the second nonwoven web are prepared from a mixture of an additive and a second thermoplastic polymer, which additive imparts alcohol repellency to the surfaces of the microfibers. The three nonwoven layers can be prepared independently from polyolefins, polyesters, polyetheresters, and polyamides.

Abstract: A nonwoven laminiferous structure is provided which has three melt-extruded nonwoven layers, each of which includes at least a portion of a nonwoven web. The first nonwoven web is adjacent to one surface of the second nonwoven web and the third nonwoven web is adjacent to the other surface of the second nonwoven web. The first and third nonwoven webs consist of continuous and randomly deposited filaments having an average filament diameter in excess of about 7 micrometers. The second nonwoven web consists of substantially continuous and randomly deposited microfibers having an average diameter of from about 0.1 to about 10 micrometers. The microfibers of the second nonwoven web are prepared from a mixture of an additive and a second thermoplastic polymer, which additive imparts alcohol repellency to the surfaces of the microfibers. The three nonwoven layers can be prepared independently from polyolefins, polyesters, polyetheresters, and polyamides.

Abstract: From 3 to 25 g/m.sup.2, in particular from 5 to 10 g/m.sup.2 of a pulverulent reactive hot-melt composition including a prepolymer and a hardener for the latter are applied onto one or two faces of textile reinforcement. The hardener becomes active only at a temperature above that at which the powder softens to become tacky. This powder on one or two faces makes it possible in particular to preform the reinforcement before it is employed for the manufacture of an article made of composite material.

Abstract: A laminated structure in which a superabsorbent material is provided as a layer of discrete discontinuous chunks or elements attached to a continuous porous support layer. The superabsorbent element is provided by saturating a porous substrate with an acrylic acid monomer solution, polymerizing and crosslinking the monomer in the web, and then dicing the monomer/web substrate to produce discrete superabsorbent elements. The superabsorbent elements having various shaped are then affixed to the flexible porous support layer by friction so as to provide the flexible superabsorbent laminated structure.

Abstract: In a process for manufacturing a rigid-flex printed circuit wherein a rigid insulating layer supports one portion of the printed circuit and a flexible insulator supports another portion thereof to furnish flexible leads for connection the printed circuit to an operative device, a first assembly is provided comprising a curable prepreg insulator layer having an opening for the flexible leads. A flexible sheet spans the opening, and the assembly is pressed with one surface in contact with a smooth hard surface while the other surface is supported by a flowable curable prepreg layer. The insulator and flowable layers are a release layer which prevents bonding between the prepreg layers throughout most of the areas while permitting bonding along the edges. The assembly is maintained under heat and pressure to partially cure both prepreg layers and bond the flexible sheet to the edges of the opening and bond the edges of the prepregs together to form a flat rigid sandwich.

Abstract: The invention refers to a lining material for shoes, comprising two to three layers of nonwoven fabric which are spot (heat) bonded together, wherein a wear resistant ply facing towards the foot (inside of the shoe) is comprised of synthetic fibers and that ply is adhered on its the side facing away from the foot to a moisture absorbent ply which contains about 30 to 70 wt. % cellulosic fibers.

Abstract: A composite elastic material having a stress relaxation of less than about 30 percent is composed of at least one elastic sheet formed from a blend of (1) a styrene-poly(ethylene-propylene)-styrene thermoplastic elastomeric block copolymer or a mixture of styrene-poly(ethylene-propylene)-styrene and styrene-poly(ethylene-butylene)-styrene elastomeric block copolymers, and (2) a tackifying resin. The blend may also include a polyolefin and/or an extending oil. The elastic sheet is joined to at least one gatherable layer at spaced-apart locations in which the gatherable layer is gathered between the spaced-apart locations so that the composite material is elastic.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., characterized in that low elongation high tensile strength filament yarns are used as wefts (5), (16) forming tubular textile jackets (2), (6) laid in the lining material or as the yarns (12) forming a tubular fibrous member (13) together with a tubular textile jacket (2'). This characteristic feature provides excellent performance required for lining materials for pipelines such as enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: A composite structure (64) is disclosed for placement on an air, land or sea vehicle to attenuate electromagnetic waves and to break up ice accumulation which might occur under adverse weather conditions. The upper section (22) of the structure comprises a nonmagnetic, pneumatic deicer having a deformable sheet formed of a woven cloth substrate and a fluid-impervious resilient coating, and fluid passages for inflating the deicer section. The deicer section is attached to an underlying section (28) which provides electromagnetic wave attenuating properties. The lower section may be a dual band absorber having an upper elastomeric layer and a lower elastomeric layer loaded with magnetic particles, or the elastomeric deicer section may itself serve as the upper elastomeric layer with the magnetic particle layer.

Abstract: This invention relates to an antistatic mat, for example, a chair mat used for computer operation, a floor mat to be used at a room door, in an elevator or in front of an elevator door, and a car floor mat, and more particularly relates to an antistatic mat which is capable of instantly discharging the static electricity charged on a human body, removing a disagreeable sensation which is occasionally generated by the discharging of the static electricity.

Abstract: A conductive die attach tape is described which allows for mounting of diced semiconductor chips thereon, followed by removal of the chip with an adherent conductive adhesive, and the mounting of the chip/adhesive combination in a chip carrier preparatory to the wire bonding operation.

Abstract: A stretchable water penetration resistant moisture-vapor permeable undergarment that protects the body from accidental contact with blood and other body fluids. The underwear provides protection to medical personnel working in non-standard environments such as emergency rooms, accident and natural disaster sites, rescure operations and the like.

Abstract: Odor absorbing sheet material is formed from a thin flexible substrate sheet on which discrete spaced areas, for example dots, of bonding agent such as latex adhesive are applied. Odor absorbing granules are bonded to the surface of each adhesive area. Since only small portions of the surfaces of the granules adhere to the adhesive, the odor absorbing capacity of the granules is not impaired. A thin flexible permeable cover sheet is applied on the or each granule coated side of the substrate sheet and is attached in a manner which maintains permeability of the assembly so that access of air to the granules is preserved and which does not substantially affect the flexibility of the assembly so that a sheet product with a soft flexibility and drapeable hand is obtained. Preferably, the outer cover sheet of the assembly is an anti-friction porous polymer web such as for example the webs used as facing layers on non-stick or non-adherent wound dressings and bandages.

Abstract: The invention describes a hot-melt adhesive substance for the coating of fabrics, especially of lining materials of outer wear, comprising a hot-melt adhesive paste on a copolyester basis as the base layer and a covering layer of a hot-melt adhesive. The inventive hot-melt adhesive substance is characterized in that the hot-melt adhesive paste of the base layer contains a mixture of copolyester and low-pressure polyethylene. The covering layer of hot-melt adhesive preferably contains copolyamide. When using the inventive hot-melt adhesive substance, a raster-pattern coated fabric can be obtained in which the hot-melt adhesive substance has substantially improved adhesive strength as well as a high degree of washing and cleaning stability.

Abstract: To form a paved surface, a laminate is used which has on the bottom a geotextile fabric with the mesh structure on the top. The fabric is adhered to the road base by spraying or spreading a bituminous liquid onto the base and laying on the laminate and applying further adhesive to the top of the laminate; asphalt is then placed and rolled. The laminate is formed of a square or rectangular mesh structure which has oriented stands connected at junctions which are thicker than the strands and have low-orientated or unorientated nodules. On one side the surface of the nodules are melted and the fabric is pressed into the nodules so that the plastics material of the nodules envelopes some of the fibres or filaments of the fabric to form a mechanical bond. In this way, the oriented strands stand proud of the fabric, to enable the asphalt aggregate to penetrate into the meshes and interlock with the strands.

Abstract: The base material for thermobinding interlining is constituted of a woven fabric or of a weft knitted fabric or weft knit. According to the invention, at least the weft of the woven fabric or of the weft knit is in synthetic yarns, for example of 35 to 500 dtex, composed of thin filaments having a unit count less than 1.3 dtex. Preferably, these yarns are textured yarns.The thermobinding interlining is constituted of the woven fabric or of the weft knit, on one face of which dots of thermofusible polymer have been deposited.

Abstract: A component for use in manufacturing articles such as printed circuit boards comprising a laminate of a sheet of copper foil and a sheet of aluminum or the like. A band of flexible adhesive joins the sheets around their borders and creates a protected central zone at the interface of the sheets. Islands of adhesive are located inwardly of the edges of the sheets through which tooling pin holes may be formed to facilitate handling of the foil.

Abstract: A three-layer laminated material is particularly useful for surgical drape reinforcing panels. The material has a first outer layer of liquid impervious material, an intermediate layer of absorbent material, and a second outer layer of plastic webbing. The webbing layer, which is on top when a drape covers a recumbent person, reduces linting from the absorbent layer without substantially reducing absorbency. The webbing layer is secured to the absorbent layer by a cold cure adhesive. In preferred embodiments, one or both of the outer layers are corona-treated materials and the intermediate layer is a nonwoven fabric.

Abstract: A nonwoven laminiferous structure is provided which has at least two melt-extruded nonwoven layers:(A) a first layer which includes at least a portion of a first nonwoven web; and(B) a second layer adjacent to said first layer which includes at least a portion of a second nonwoven web; in which,(1) the boundary between any two adjacent melt-extruded nonwoven layers is distinct in that fibers at or near the surfaces of such adjacent layer are not significantly intermingled;(2) the fibers of at least one of such first and second layers are prepared by melt extrusion through a die at a shear rate of from about 50 to about 30,000 sec.sup.-1 and a throughput of no more than about 5.4 kg/cm/hour of a mixture of an additive and a thermoplastic polymer, which additive (a) is present at a level of from about 0.