MX2008009395A - Intermittently bonded fibrous web laminate - Google Patents

Abstract

There is provided a laminate of a thermoplastic backing to a fibrous web. This laminate, for example, could be used as a loop laminate for use in a hook and loop fastening system or an intermittently bonded elastic fibrous laminate. The laminate comprises a thermoplastic backing layer, having a first face and a second face. The backing layer has a plurality of projections extending from at least the first face of the backing. A fibrous web is attached to the backing at the location of at least some of the projections. The thermoplastic material of the backing, at the location of the projections, penetrates into the fibrous web encapsulating at least in part fibers of the fibrous web. The fibrous web preferably penetrates into at least some of the projections. The fibrous web is generally not attached, or very lightly attached, to the backing layer over at least some portion of the distance between adjacent projections. This allows for a low cost fibrous web laminate that can be directly extrusion formed with a backing without compromising the fibrous web's performance between the attached projections.

Description

LAMINATED FROM A FIBROUS FABRIC, ADHERED IN AN INTERMITTENT SHAPE FIELD OF THE INVENTION The present invention relates to a laminate, such as could be used as a loop material for a loop and hook fastener having at least one sheet of material formed by a fibrous and flexible fabric intermittently adhered by extrusion to a structured backup, a backup that is usually a movie. The invention also relates to methods for the production of these laminates.

BACKGROUND OF THE INVENTION Fibrous laminates for use as loops and the like, formed by lamination of nonwovens to films are known. Laminates are often used in disposable articles and garments, where a fibrous surface is desired. To create a more spongy fibrous surface, the fibrous material often adheres intermittently to the backing. With elastic laminates this is sought to allow the laminate to spread more easily. For the loop laminates, intermittent adhesion is sought to keep the fibrous material open, so that a suitable hook can be attached. For example, in the United States patent document numbered No. 194929, 5,032,122, a backing of orientable material is provided in a dimensionally unstable state. A plurality of filaments are fixed to the backrest in fixed spaced regions by each of the filaments. The fixed regions define between each pair of fixed regions, an unattached hitch region. The steerable material is recovered along one direction to its dimensionally stable state, thereby crimping the filaments in the latching regions, so as to form fibrous elements projecting from the backing, between the fixed regions. This is used as a fabric with loops. U.S. Patent No. 5,547,531 describes the formation of a loop by a method comprising the steps of providing a first sheet comprising an elastomeric, pressure sensitive adhesive film having a first adhesive surface and a second adhesive surface opposite the first adhesive surface; a relaxed orientation and a long orientation; stretching the first sheet from the relaxed orientation to the elongated orientation; contacting a second sheet, comprising a non-woven fabric with the first surface of the first sheet in the elongated orientation, thereby directly joining the second sheet and the first sheet to form a laminate; and relaxing the first sheet, such that the second sheet is creased to form latching regions capable of entangling the hooks of a complementary male fastening component. U.S. Patent No. 5,595,567 also employs a non-woven fabric, which is preferably bonded to a backing while the backing is in its elongated, unstable orientation. The joints of the construction form an adhesion pattern that joins the non-woven fabric with the backing. When the backrest contracts from its elongated orientation to its relaxed orientation, the non-woven regions of the non-woven fabric wrinkle and extend outwardly from the backrest, to form engagement regions which are capable of entangling the coupling elements of a non-woven component. complementary male attachment. U.S. Patent No. 5,256,231 discloses a method for providing a sheet of loop material adapted to be cut into pieces so as to form loop portions for fasteners of the type comprising removable, hook-and-loop portions of hooks and loops. and that are incorporated into items such as garments or disposable diapers. The sheet of the loop material includes a sheet of longitudinally oriented fibers having anchoring portions and arcuate portions projecting in a direction away from the anchoring portions, and a layer of thermoplastic backing material extruded over the anchor portions to join to the anchoring portions that form at least a portion of a backing for the loop material.

BRIEF DESCRIPTION OF THE INVENTION The invention is directed to a laminate of a thermoplastic backing to a fibrous web. This laminate, for example, could be used as a loop laminate for use in a hook and loop fastening system or a fibrous, elastic laminate intermittently adhered. The laminate comprises a thermoplastic backing layer, having a first face and a second face. The backing layer has a plurality of projections extending at least from the first side of the backrest. A fibrous web is attached to the backing where at least some of the projections are located. The thermoplastic material of the backrest, in the place of the projections, penetrates the fibrous fabric encapsulating, at least in part, the fibers of the fibrous fabric. The fibrous web preferably penetrates at least some of the projections. The fibrous web, in general, is not attached, or is bonded very lightly, to the backing layer on at least some portion of the distance between adjacent projections. This allows a low cost fibrous web laminate to be manufactured directly by extrusion with a backing without compromising the performance of the fibrous web between the joined projections.

BRIEF DESCRIPTION OF THE FIGURES The present invention is described in greater detail with reference to the accompanying figures, where like reference numerals refer to like parts in various views and where: FIGURE 1 is a schematic view of a method for manufacturing the fibrous web laminate of the invention. FIGURE 2 is a cross-sectional view of a manufacturing tool used to form a precursor film backing employed in accordance with the present invention. FIGURE 3 is a front view of the manufacturing tool of FIG. 2. FIGURE 4 is a front view of a fibrous web laminate of the invention, in accordance with the present invention. FIGURE 5 is a schematic view of a second method of manufacturing the fibrous web laminate of the invention. FIGURES 6 are perspective views of the forming roller of FIG. 5, with an exploded view of the surface of the roller.

FIGURE 7 is a front view of a backing of precursor film made using the forming roll of FIG. 6. FIGURE 8 is a perspective view of a fibrous web laminate of the invention, using the backing of FIG. 7. FIGURE 9 is a schematic view of a third method of manufacturing the fibrous web laminate of the invention. FIGURE 10 is a cutaway perspective view of a die used in the method of FIG. 9. FIGURE 11 is a cross-sectional view of the die of FIG. 10 having an insert of the die flange. FIGURE 12 is a perspective view of an insert of the die flange from the entrance face. FIGURE 13 is a cut-away cross-sectional view of the die flange insert of FIG. 12. FIGURE 14 is a perspective view of an insert of the die flange of FIG. 12 from the outlet face. FIGURE 15 is a side view of a polymer stream with three layers used in accordance with the present invention. FIGURE 16 is a side view of a fibrous web laminate of the invention, which employs a backing formed by the method of Fig. 9. FIGURE 17 is a perspective view of a second insert of the die flange from the face of entry. FIGURE 18 is a side view of a fibrous web laminate of the invention, employing a backing formed by the method of Fig. 9, using the die insert of Fig. 17.

DETAILED DESCRIPTION OF THE INVENTION The fibrous web laminate of the invention can be manufactured by providing a thermoplastic backing having a plurality of vertical projections, then inserting a flexible fibrous web into the thermoplastic material forming the backing, in the place where at least some of the projections are located. This is called the process of adhesion by selective extrusion. This adhesion by selective extrusion, in the place where the backrest has the projections, is usually due to a greater polymer mass existing in these places of the backrest. This greater polymer mass allows the polymer to remain in a liquid state for longer in these regions. This, in turn, allows the fibers of the fibrous web to selectively penetrate into the polymer that forms the backing at these points. The fibrous web is preferably inserted into the thermoplastic polymer of the actual projections, although it is possible for the fibrous web to be inserted into the face of the backing opposite the face having the projections at the location where the projections are located. This is possible because the higher thermal mass created by the projections will slow down the cooling of the polymer backing on both sides of the back, allowing selective adhesion by inserting fibers into the polymer on both sides, but the fibers of the fibrous fabric naturally they would fit much better on the face that contains the projections. The fibrous fabric between the projections is in contact with the backing, although preferably it is not adhered or very lightly. The backing layer can be any layer capable of being selectively extruded to a fibrous web by the projections provided. As such, the backing layer could be a film, which could be a continuous film or a discontinuous film or strips or it could be a suitable fiber capable of being provided with projections available for adhesion by selective extrusion, according to the invention. In general, the backing would have a plurality of projections spaced apart from each other, where there will be intermediate areas of the backing without projections between at least some of the projections spaced apart from each other. For example, a network structure could be formed by extrusion, with projections on the intersecting threads of the network. Some of the places in the network would have projections with intermediate areas of the backup material between the projections (for example, projections on a support that forms the network). In some places of the network there would be no intermediate areas of the backup material between the projections, but rather, the holes in the network. The backing could be a non-elastic and / or elastic thermoplastic material and, in some embodiments, the projections are formed in part by a thermoplastic polymer or a different mixture than that of the backing in the areas that do not have the projections. The backup could also be a set of separate elements. For example, the backup could be a series of separate elements, each of which provided with more than one projection, preferably three or more projections. If a backing of separate elements were formed, in which each was provided with only one projection, the separate elements would tend to rotate away from the fibrous web and would not provide any significant support. The thickness of the backing between the projections, on average, would generally be at least 10 microns or 20 microns and sometimes thicker than the projections on the backrest, in such a way that the backrest provides a support for the fibrous fabric between the junction points created by the projections. In one embodiment, as shown in Fig. 4, the backing is a continuous film 1 consisting of a set of vertical projections 8 on at least one side of a film backing 5 that is bonded to the fibrous web 6. The projections 8, in general, are integral with the backing of film 5, since they are manufactured simultaneously, as for example, during an extrusion process. As such, there are no connecting lines or joints between the projections and the backrest, only projections integrally formed on a backrest. In other words, as they were formed integrally, the backup material and the material that forms the projections is the same where the projections are joined with the backing. In certain methods of manufacturing backs it is possible that the projections are formed at their ends by a polymer or mixture different from that of the backing, in whole or in part; however, at the base of the projections, the backing and the projections are a continuous material. The fibrous web laminate can be manufactured by a method such as that shown in Fig. 1. An extrusion die 52 extrudes a thermoplastic material forming a film 1, which is prepared to comprise a film backing 5, which have a set of vertical projections 8. The polymer leaving the die could have projections 8, formed on a forming surface, such as, for example, a manufacturing tool 4, as described in the United States patent publication with the number 2003/111767 Al, whose essence is incorporated in the present in its entirety. The thermoplastic moldable material is supplied to the manufacturing tool 4 by extrusion to create a film 1, with projections 8 which are replicas of the cavities 7 on the surface of the tool 4, as generally illustrated in Fig. 3. The backing The film 5 is created by a space 2 between the manufacturing tool 4 and a surface of the backing, which, as shown in Fig. 1, is the surface of a smooth roller 20. Alternatively, these projections 8 they could be formed in the rim of the die, directly forming a structured film with a backing, having projections extending longitudinally. This, in general, would be a movie that has a series of continuous projections. This space 2 can be of any suitable width. If a discontinuous backing is desired, the space could also be eliminated in areas by causing the portions of the manufacturing tool 4 to engage in the surface of the backing, such as, for example, the roll 20. The film 1 is then attached to a fabric fibrous 6 in a constriction 12, which provides a degree of pressure to force the fibers of the fibrous fabric so that they are introduced into the polymer of the film in the place where the projections are located. The fibrous web 6 can be supplied from a supply form 11, such as a roll, or the fibrous web 6 could be made in line, with the backing of film 5. The fibrous web 6 is attached to the film polymer in place where the projections 8 are located, basically using the residual heat that comes from the extrusion to result in the preferential extrusion lamination in the place where the projections 8 are located, having little or no binding of lamination by extrusion of the fabric fibrous to the film 1 in the intermediate portions 13 between the projections 8. The greater mass of thermoplastic material in the projections 8 causes the thermoplastic material in these places to cool more slowly, remaining molten or in liquid form for a period longer. The fibers of the fibrous web 6 as such can penetrate the thermoplastic material of the film at the location where the projections are located. The intermediate portions 13 of the film backing are preferably more solidified, allowing little or no penetration of the fiber into the thermoplastic film backing in these portions. The fibrous web as such retains its original sponge in a substantially uniform manner in these intermediate portions 13, while maintaining the strength of the film backing 5 at the location where the projections are located. The resulting fibrous web laminate 10 is collected in a suitable form, such as on a roll 16. The extrusion adhesion method of the invention is opposed to the film and fibrous fabrics laminated by spot adhesion, using applied heat or ultrasound externally. With these methods of construction with external heat application or sonic bonding, the underlying film weakens at the points of attachment and the fibrous fabric is compressed against the backing at the junctions, which also compresses the fibrous fabric between the joints. In contrast, with the method of the invention the fibrous web can be as thick at the points of attachment as between the points of attachment. In other words, the attachment points do not substantially compress the fibrous web. Generally, the fibrous web at the junctions represents at least 50 percent or 80 percent, or even 90 percent, of the thickness of the fibrous web between the attachment points. Optionally, the fibrous web laminate 10 after forming can be oriented longitudinally or transversely, as is known in the art. If this orientation were made in a direction transverse to the extension of any of the extrusion joints, the laminate could be lengthened between the points joined by extrusion (by points reference is made to any separate joint, which could be a continuous bond running through the laminate) without lengthening the points of union by extrusion due to its greater thickness and strength. With a non-elastic backing, this could produce a fibrous web having a base weight that could not be directly laminated, together with bonding points with a high stable strength. Non-woven film laminates with a low basis weight with fluffy fibrous fabric materials are difficult to manufacture directly. This is partly due to the low strength and handling of films with low base weight and / or nonwovens. It is also partly due to the destructive nature of conventional bonding techniques by sonic or heat stitches, which can weaken and burn the laminates with low basis weight or the individual films or the fibrous fabrics that form the laminates. The longitudinal orientation, for example, could occur between two pairs of press rollers operating at different speeds, or the use of incremental ring rolling techniques. The widthwise elongation could be done by a transverse divergent fabric path or by incremental ring rolling techniques. In addition, the fibrous web laminate could also be stretched in the longitudinal and transverse directions to provide a biaxially oriented fibrous web laminate. If the backing is elastic the orientation as described above could be used as a method to activate the elastic fibrous web laminate by weakening the fibrous web between the adhered places of the elastic back, allowing the laminate to recover elastically and subsequently , extends easily in the direction and to the point of orientation. When an elastic backrest recovers, the attached fibrous web may become more spongy and have more fibers projecting outward from the surface of the backrest. In this case, the fibrous fabric may be more spongy between the joined places than in the joined places due to the elongation and therefore, there would be no sponginess in the joined places. This sponge effect could also be used to create laminates consisting of fluffier fibrous fabrics, to be used as loops. An alternative method for manufacturing a backing is shown in Fig. 5. This resembles the embodiment of Fig. 1 for forming projections, which employs a forming surface, but in this case, the surface of the manufacturing tool. it is smooth and the forming surface 25 is the surface of a forming roller 20. The forming roller 20 is provided with a structured surface 25 that molds the projections 31 on a backing 30, as shown in Fig. 7. The backing 30, as shown is a film having three portions: the projections 31 and the intermediate portions 33 and 32 of two different heights or thicknesses. The opposite face 34 to the backing 30 is a smooth surface, manufactured by the manufacturing tool 14, positioned to provide a space 2, offset from the forming roller 20., as shown in Fig. 2. In this case, the backing 30 must be transferred to a transfer roller 21 before being joined to the fibrous web 6 in a constriction 12. The projections in this case could be maintained in a state of the fluid type for a longer time, adjusting the temperature of the roller so that it is closer to the melting temperature of the extruded polymer. The transfer roller 21 would preferably not be heated to maintain the strength of the backrest 30. Once again, the discontinuous backrest structures could be formed if there were no space along the portions of the roller 20. This could form separate structures , for example, if the portions 33 were eliminated in the absence of space 2 in these portions of the surface of the forming roller. If the portions 33 were eliminated (by eliminating the space 2) then the transfer roller would have to push the separated elements away from the forming surface 25, since there is no continuous backing running the longitudinal direction, although in this case it should more than one projection is provided to fix the separate elements to the fibrous web. This could be done with a light bond between the transfer roll and the backing 30, for example, by using a transfer roll having a surface with adhesion properties to the polymer forming the backing 30. FIG. 8 shows the film backing. of Fig. 7 attached to a fibrous web 6 in the projections 31. In a similar way this would be done under pressure, as for example, in a constriction. An alternative method for directly forming a film backing for use in the invention, using an extrusion die 42, is schematically illustrated in Fig. 9. The film is extruded from the die 42 having a flange of the suitable die 46 to create a backup that has projections. This backing containing projections 43 then joins one or two fibrous fabrics 6, on one or both sides of the backrest 43 under pressure, as for example, in a constriction 12. A ridge of the punch 46 suitable for this could have forming surfaces similar to those of the manufacturing tool 4, which would usually form protrusions running in the direction of the film backing. However, it is possible to use a single process, with a conventional multilayer stream that allows the formation of thermoplastic projections having different adhesion characteristics than the thermoplastic material forming the backing between the projections (characteristics different from those of the thermal state of the polymer in the projections). Typically, this method includes: first extruding an initial melt stream 50 by a predetermined flow path, which can preferably be a melt stream of multiple layers or multiple components 50, through a flange of the die 46, such as for example , the die flange insert 10 shown in Figs. 10 and 11. The predetermined flow path is preferably one dimensional and continuous along a certain portion of the flow path. By a dimensional it should be understood that the stream of molten material could be a shape of the dimensional linear type, such as, for example, a straight line, but which could be a curved line, in which case the curve could intersect with itself and form a shape. oval or round (for example, a tubular torquel). In one embodiment, the molten material stream is sent from conventional extruders (not shown) through die 42, which has at least one die insert, where the die insert 100 has a profiled non-rectilinear inlet aperture 104, as shown in Fig. 12. By non-rectilinear it should be understood that the inlet opening of the die insert as a unit is in a non-rectangular shape; however, the portions of the die entry openings could assume a rectilinear shape. The inlet opening of the die insert 104 interrupts at least some portions of the incoming initial melt stream and redirects the portions of the melt stream interrupted from the flow path shape of the predetermined initial melt stream to a die path shape. flow or flow trajectories defined by the inlet opening of the die insert. The stream of molten material interrupted and redirected then exits the die insert through the outlet 105. The outlet of the die insert 105 may be similar to the insertion of die insert 104 or may converge in the flow path defined by the insert of the die. punching from the profiled form in the inlet opening of the die insert to a less profiled form, at the outlet of the die insert 105, where the flow path of the molten material stream approaches the flow path of the stream of original predetermined molten material, but it is not a rectangular aperture. The die insert used for this method produces a redistribution of the fluid stream of initial molten material, at least in part, in the transverse direction. This also causes at least one layer or portion of the stream of molten material to be redistributed into a multiplicity of possible single flow paths, which generally results in the flow in these flow paths having different flow velocities and, hence, different levels of melt-induced orientation, either in the transverse direction of the die insert or in the thickness dimension of the die insert at the outlet of the die insert or in both dimensions. The different flow rates also create areas with higher polymer mass that help create the areas with the projections on the film backing. These areas of higher flow, generally, would be in the areas of the peaks 108 and 109 of die insert 104. The stream of molten material at the outlet of the die insert is then extruded as a backing having joined projections created by redistribution of fluxes rather than a profiled forming surface at die exit of die 105. However, both methods could be used in combination. The insert is shown in the embodiment that was previously discussed as a separate element, located within the die, as shown in Figs. 10 and 11. The insert could also be formed integral with the die and / or feeding material in which it is located, as long as it has the characteristics described.

In a preferred embodiment, a rim of the profiled die as shown, for example, in Figs. 12-14 is used in combination with a fluid stream of multi-layer melt material. This may result in projections formed predominantly of a polymer and the film backing formed predominantly from a different polymer, by redistribution of preferential flow of an outer polymer layer in the projections formed in and by the ridge of die peaks 108 and 109. A stream of multi-layer or multi-component melt material can be formed by any conventional method. A multilayer melt stream can be formed by a multi-layered feedstock, such as that described in U.S. Pat. No. 4, 839.131. A stream of multi-component melt material having domains or regions with different components could also be used, such as would be formed by the use of a co-extrusion die by inclusion or other known methods, such as those detailed in U.S. Patent No. 6,767,492. The stream of molten material is redirected or redistributed at the entrance of the insert. The material or materials forming one or more layers or regions of the molten material precursor stream are redistributed or redirected in one direction, which may be the transverse direction and / or other dimensions relative to the flow paths or shapes of the predetermined material initial. The redirected flow occurs, at least in part, by alteration or interruption of a portion of the material flow at the entrance of the insert. The insert redistributes the portions of the fluid stream from the incoming polymer melt material, according to the structure of the die rim. A die insert can be easily adapted in a conventional die, such as a hanger die, such as that shown in Fig. 10, and can be easily removed, changed and cleaned if the die insert is formed of multiple removable components, such as the first and second halves, as shown in Figs. 12 and 14. The use of multiple components of a die to form a die insert also allows more complex flow paths to be formed by conventional methods, such as electro-discharge machining. Although a die insert is shown in two pieces, die inserts consisting of multiple pieces are also possible, which allow the formation of more complex flow paths or flow channels in the insert of the reinforced die. The die insert could also be formed as a unit or in part with other parts of the die. However, the flow paths within the die insert, preferably, are substantially continuous and convergent, so that, in at least part of the flow path within the die, it widens in a linear fashion. The region of the entrance of the insert, as shown in Fig. 12, is characterized as having a two-dimensional non-planar structure, which is linked by an upper limit 98 and a lower limit 99. Within the input region, defined by the upper limit 98 (or peaks 108) and the lower limit 99 (or peaks 109), as shown in Figs. 12 and 13, there are open areas of the entrance of the insert 100, which form the opening of the insert 104, separated by closed areas. The open areas are characterized by structures having "P" width dimension, "P" dimension which can of course vary along the structure of the open areas, in the same way as all the dimensions. These structures can be substantially continuous openings (as shown in Fig. 12), branched openings and / or intermittent openings. The open areas, of at least a portion of an entrance region, generally constitute between 10 and 90% of the total area defined between the upper and lower limits 98 and 99 in at least a portion of the entry of the insert (where the upper and lower limits are taken as those that limit the structures in that region of the entrance of the die insert) or, alternatively, between 20 and 80%. Conversely, closed areas represent between 90 and 10% of the entry of the die insert or, alternatively, 80 to 20% or more than 10, 20 or 30%, up to more than fifty%. With higher levels of closed areas at one entry of the insert, larger proportions of material are propelled into the initial material flow path so that they find alternative flow paths, so as to enter through the insert opening of the insert 104. Typically, the cross sectional area of the initial material flow path may be as large as the region of the insert entry or greater, but may be smaller than the region of the insert entry. The entry opening of the insert (or portions thereof) can also be characterized by the ratio of the first perimeter of a section of the entry opening of the insert to a rectangular opening of the insert of the equivalent die (an opening having the same length). and the same average width dimension P). The ratio of the perimeter of the entrance opening of the insert of the invention to the perimeter of an entry opening of the equivalent rectangular insert is the perimeter ratio, which may be between 1.1 and 10 or more than 1.1 or 1.5 or 2.3 but which general is less than 8 or 5. Structures with perimeters or larger perimeter relationships are considered more highly structured openings. With the more highly structured openings, there is usually a more drastic redistribution of the molten flow from the incoming initial molten fluid stream, such as a multi-layered or multi-component fluid stream. In general, this is due to more possible alternative flow paths for a given interrupted flow path. However, with a very large perimeter relationship, with a relatively low level of closed areas, not much of the molten material is significantly redistributed. More closed areas (lower percentage open area) result in a more drastic redistribution of at least part of the portion of the incoming molten flow stream, in particular, when coupled with more highly structured openings or discontinuous openings. In general, part of the material at given points of the molten flow stream is driven to find alternative flow paths due to the closed areas 11, as shown in Fig. 13. With a highly structured opening there is a greater variety of possible and unique flow paths in the region bounded by the two boundaries 98 and 99. The material deviates more easily when there are a large number of possible flow paths that deviate from an average flow path. In general, an inlet opening of the die insert is characterized by having elements on a region of the given die insert, which extends between at least a portion of the upper boundary 98 to the lower boundary 99 for that region. These elements 93 have a height, which may be less than the distance MH "between the upper and lower limits and, generally, are from 10 to 100% of the" H "or from 20 to 90% of the nH". The elements can extend at an angle β of 2 to 90 degrees or 5 to 80 degrees, or 10 to 90 degrees from the average flow path that extends between the upper and lower limits. In Fig. 13 these elements 93 are the legs of an oscillating structure, but could be arms or some other structure. With the oscillating entry openings as shown in Figs. 12-14, the elements would constitute a leg 101 between an upper peak 109 and an adjacent lower peak 108, having a height "H". An individual element may extend between the upper limit 98 and the lower limit 99 or may be an extension of another opening that is somewhere between the upper and lower limits. Fig. 15 shows a cross-sectional view of a stream of precursor molten material, which could be introduced into the inlet opening of an insert. The three-layer melt stream 52 of FIG. 15 is characterized by a relatively thick layer 53 and two thinner layers 51 and 54 on the two faces of the thicker layer 53. When this stream of molten material 52 is found. with the insert opening of the insert 104, the thicker layer 53 is basically divided into the continuous channel of the inlet opening 104, which could form an endorsement constituted by a substantially continuous film. A portion of the thicker layer 53 of the molten material stream also distributes at peaks 108 and 109. The outermost layers of the molten material stream 51 and 54 will tend to redistribute at peaks 108 and 109 formed by the elements 93. The middle layer 53 will tend to divide evenly in the elements 93. The outermost layers 51 and 54, generally, will follow the shortest flow path to an inlet opening, which for the outermost layer 51 would be , generally, the peaks 109, and for the outermost layer 54, the peaks 108. Generally, with any given portion of the material flow, the material will tend to flow towards the nearest opening provided by the inlet 104. At the exit opening of the insert 105, as shown in Fig. 14, the three layers of the molten stream of the layer material are in recombined form. The resulting backing containing projections 43 is shown in Fig. 16, after it has been extruded and joined to non-woven fabrics 6, which form the laminate 60. The middle cast layer 53 forms a backing constituted by a continuous film 53 ' and the two outermost layers 51 and 54 form the projections 51 'and 54' of the backrest 43 as a result of the redistribution of the outer layers at the tips of the die inlet 104. Advantageously, these projections will be formed with a polymer having a greater adhesiveness to the fibrous web 6 by virtue of a chemical compatibility or lower viscosity (allowing a greater penetration of the fibrous web into the material forming the projections 51 'or 54'). With three or more layers of material, the division will be governed by the relative proportions of the extruded layers of precursor material and the shape of the aperture 104 of the insert 100. With an insert having a regularly oscillating aperture, the division may give as a backing 43 results, as shown in Fig. 16 (assuming a molten stream of the co-extruded material with relatively constant thicknesses of the materials throughout the stream of molten material). In the case where the opening of the inserts varies, either in width P, angle "ß", amplitude "H", wavelength "" or any other combination of them, as shown in Fig. 13, the division of the layers of material will vary but the fluid streams will continue to divide between the peaks 108 and 109 of the insert. The degree of partition will also depend on the angle ß between the legs of the peak and the openings of the valley of the insert. When the angle ß is less than 909 at least one of the layers will tend to be completely divided, so that it is distributed continuously in the extruded or formed film. This is particularly true when there is an external fluid layer that forms less than 50% of the material flow. When the angle β is greater than 90a, the layers tend to be divided such that there are no discontinuous layers, in particular, in the case where a layer is 50% or less of the material. In general, the angle ß varies from 170 ° to 5 °, from 140 ° to 10 °, from 110 ° to 20 ° or from 90 ° to 30 °. The opposing peak structures could be regular oscillating curves, as shown, stepped function curves or any other variation. An alternative to the above method to form a backing containing projections is shown in Fig. 17. In this case the die insert has a more rectangular inlet opening 204 and a structured outlet 205. The result is a film such as that it is shown in Fig. 18, which has projections similar to those of Fig. 16; however, with a multilayer inlet stream there is little or no transverse directional redistribution of the outer layers 51"and 54" and of the middle layer 53", which results in a more layered structure. uniform in the resulting film. The method of forming the backing could advantageously be used in combination with other extrusion methods to produce backings having different regions with different properties. For example, with the laminated fibrous elastic backings used in disposable articles and garments, such as sanitary products or disposable gowns, it is often convenient to have non-elastic regions. These non-elastic regions often serve as attachment points for attaching other elements or joining the elastic, fibrous laminate to the article. For example, tabs, tabs, or elastic panels, used in diapers or other sanitary articles often must have a stable surface for attachment to the article and / or to attach fasteners, such as mechanical fasteners. or adhesives. These non-elastic regions of the laminate could be formed directly by providing a non-elastic region adjacent to an elastic region on a backing. The non-elastic regions and the elastic regions could be formed in a single continuous backing or could be formed separately. Each one could be endowed with projections or if only one region should be adhered to intermittently, only that region should have projections. The non-elastic region could be formed with a 1 non-elastic thermoplastic polymer or, alternatively, the non-elastic region could be formed with a thermoplastic elastomer continuously bonded to the fibrous web. If continuous backup is desired, this could be done using conventional collateral extrusion methods, coupled with the exemplary backing methods, which contain projections, mentioned above. In an alternative way, the method described for the embodiment of Figs. 8-10 could be carried out again in the die, for example in the distributor area or feed material. In this area, the width to height ratio of the polymer feed stream is much higher, so that very few peaks can be provided to redistribute the polymer flow, but larger polymer masses are redistributed. The redistributed polymer flow is then expanded in the die (e.g., a die on a hanger) which results in an enlargement of the redistributed polymer regions. With a multilayer polymer flow, the layers could be elastic and non-elastic. In addition, with a multi-layer polymer flow this will create a polymer flow in the die flange having large regions with redistributed polymers (eg, elastic and non-elastic), which could then be extruded, to form projections such as those described before. The elastic and non-elastic regions, for example, could have widths greater than 5 mm or 10 mm. Suitable polymeric materials from which the extruded backings or fibrous fabrics of the invention can be manufactured include any thermoplastic resin. The thermoplastic resins may include either elastomeric or non-elastomeric thermoplastic polymers or both. A non-elastomeric thermoplastic polymer is one that can be repeatedly processed while molten and that does not exhibit elastomeric properties under ambient conditions (e.g., ambient temperature and pressure). As used in connection with the present invention, "non-elastomeric" means that the material will not substantially resume its original shape after being stretched. In addition, the non-elastomeric polymers can preferably sustain a permanent hardening after deformation and relaxation, hardening which is preferably at least about 20% or more and, more preferably, at least about 30% or more of the original length at a moderate elongation, for example, approximately 50% (for materials that can be stretched up to 50% without fracturing or without other failures). Some examples of non-elastomeric or non-elastic thermoplastic compositions that may be used in connection with the present invention include, among others, polyurethanes, polyolefins (eg, polypropylenes, polyethylenes, etc.), polystyrenes, polycarbonates, polyesters, polymethacrylates, copolymers of ethylene-vinyl acetate, ethylene-vinyl alcohol copolymers, polyvinyl chlorides, ethylene-vinyl acetate polymers modified with acrylate, ethylene-acrylic acid copolymers, nylons, fluorocarbons, etc. Generally, polyolefins are preferred, for example, polypropylene and polyethylene and the like and copolymers and mixtures thereof. An elastomeric (or elastic) thermoplastic polymer is one that melts and denotes elastomeric properties under ambient conditions (eg, temperature and ambient pressure). As used in connection with the present invention, "elastomeric" means that the material will substantially resume its original shape after being stretched. Furthermore, the elastomeric polymers can preferably only sustain a small permanent hardening after deformation and relaxation, hardening which, preferably, does not exceed approximately 30% and, more preferably, does not exceed approximately 20% of the length original in moderate elongation, for example, 50% approximately. The elastomeric thermoplastic compositions of the present invention can be either pure elastomers or blends, with an elastomeric phase or content which will anyway exhibit substantial elastomeric properties at room temperature. U.S. Patent No. 5,501,679 (Krueger et al.) Provides a more in-depth analysis with respect to the elastomeric materials that may be considered for use with reference to the present invention. The elastomeric thermoplastic materials may include one or more elastomeric materials that can be extruded into a backing, such as a film, or forming a layer consisting of a film or a fiber or the like, which may include block copolymers ABA, polyolefin elastomers, polyurethane elastomers, metallocene-polyolefin elastomers, polyamide elastomers, ethylene-vinyl acetate elastomers, polyester elastomers or the like. An ABA block copolymer elastomer is generally one in which the A blocks are polyvinylarene, preferably polystyrene, and the B blocks are conjugated dienes, specifically, a lower alkylene diene. Block A is generally predominantly monoalkylene-arenes, preferably styrenic parts and, optimally, styrene, with a molecular weight distribution of the blocks of between 4000 and 50,000. The B-block (s), in general, are predominantly made up of conjugated dienes, and have an average molecular weight ranging between about 5,000 and 500,000, monomers of one or more B-blocks that can continue to be hydrogenated or functionalized further. Blocks A and B are conventionally configured in a linear, radial or star shape, among other configurations, where the block copolymer contains at least one block A and one block B, but preferably contains multiple blocks A and / or B , these blocks that can be the same or different. A typical block copolymer of this class is a linear ABA block copolymer, in which the A blocks can be the same or different, or multiple block copolymers (block copolymers having more than three blocks), which predominantly possess terminal blocks A. These multi-block copolymers can also contain a certain proportion of AB diblock copolymers. The AB diblock copolymer tends to form a more sticky elastomeric film layer. Other elastomers can be mixed with one or more block copolymer elastomers, as long as they do not adversely affect the elastomeric properties of the elastic material. A blocks can also be formed from alphamethyl styrene, t-butyl styrene and other predominantly alkylated styrenes, as well as mixtures and copolymers thereof. Block B can, in general, be formed from isoprene, 1,3-butadiene, ethylene-butylene monomers or ethylene-propylene monomers. The thermoplastic compositions used in connection with the present invention can also be combined with various additives to achieve the desired effect. They include, for example, fillers, viscosity reducing agents, plasticizers, tackifiers, colorants (eg, dyes or pigments), antioxidants, antistatic agents, adhesion aids, antiblocking agents, slip agents, stabilizers (e.g. thermal and ultraviolet), foaming agents, microspheres, glass bubbles, backing fibers (for example, microfibers), internal release agents, heat conducting particles, electrically conductive particles and the like. Those skilled in the art of processing and using the materials can easily determine the amounts thereof that may be useful in the thermoplastic compositions. A multi-layer construction can use any multilayer or multi-component film extrusion process, as described in the United States patent documents with the numbers 5,501,675; 5,462,708; 5,354,597 and 5,344,691, whose essence is substantially incorporated herein by reference. These references teach various forms of multilayer or co-extruded elastomeric laminates, with at least one elastic layer and either one or two relatively non-elastic layers. A multi-layer film, however, could also be formed by two or more elastic layers or two or more non-elastic layers, or any combination thereof, using these known multi-component multi-layer coextrusion techniques. Processes suitable for making nonwoven fibrous fabrics which may be employed in connection with the present invention include, inter alia, air jet bonding, spun bonding, high pressure bonding, meltblowing and carded fabric forming processes. and linked. The fibers can also be used to form suitable fibrous fabrics by weaving, interlacing or netting. The fibrous web could also be formed with separate, non-matted fibers, such as continuous, substantially parallel strands or filaments. Spunbond non-woven fabrics are manufactured by extruding a molten thermoplastic, such as filaments, from a series of thin holes in a die into a spinneret. The diameter of the extruded filaments is rapidly reduced under tension, for example, by stretching eductive or non-eductive fluid or other known spunbonding mechanisms, such as those described in U.S. Patent No. 4,340,563 ( Appel et al.); United States patent document with the number 3,692,618 (Dorschner et al.); patent documents of the United States with the numbers 3,338,992 and 3,341,394 (Kinney); U.S. Patent No. 3,276,944 (Levy); patent document of the States United with the number 3,502,538 (Peterson); United States patent document with the number 3,502,763 (Hartman) and United States patent document number 3,542,615 (Dobo et al.). The fabric joined by spinning, preferably, is adhered (adhesion by points or continuous). The non-woven fabric layer can also be made with bonded and carded fabrics. The carded fabrics are manufactured from separate staple fibers, fibers that are sent through a combing or carding unit, which separates and aligns the staple fibers in the machine direction, to form a fibrous nonwoven fabric, so general, oriented in the direction of the machine. However, it is possible to use scramblers to reduce this orientation in the machine direction. Once the carded fabric is formed, it is then adhered by one or more different joining methods, to give it the corresponding ductility properties. An adhesion method consists of powder adhesion, where a powder adhesive is distributed through the fabric and then activated, usually by heating the fabric and the adhesive with hot air. Another adhesion method is pattern adhesion, in which heated calender rolls or ultrasonic bonding equipment are used to bond the fibers together, usually in a localized adhesion pattern, although the fabric can be glued in all its surface if desired. In general, the more fibers of a fabric are bonded together, the greater the ductility properties of the non-woven fabric. Air jet bonding is another process by which fibrous non-woven fabrics useful in the present invention can be manufactured. In the process of joining by air jet, bunches of small fibers, which usually have lengths between 6 and 19 millimeters, are separated and dragged into an air supply and then deposited on a forming sieve, often with the assistance of a vacuum provision. The randomly deposited fibers are then bonded together using, for example, hot air or a spray adhesive. The meltblown non-woven fabrics can be formed by extruding the thermoplastic polymers from multiple orifices of a die; These streams of molten polymeric material are immediately attenuated by steam or hot air at high speed, on both sides of the die, immediately at the place where the polymer exits from the holes of the die. The resulting fibers are entangled in a coherent fabric, in the resulting turbulent air stream, before collection on a collecting surface. Generally, to provide sufficient integrity and strength for the present invention, meltblown fabrics must adhere again, such as, for example, by adhesion with air, heat or ultrasonic adhesion, as described above. A fabric can be made extensible by intermittent cuts, as described, for example, in International Publication No. WO 96/10481 (Abuto et al.). If it is desired to achieve an extensible elastic laminate, the cuts are discontinuous and, in general, are practiced on the fabric before any elastic backing is attached to it. Although it is more difficult, it is also feasible to create cuts in the layer of the non-elastic fabric, after the non-elastic fabric is laminated to an elastic backing. At least a portion of the cuts in the non-elastic fabric should generally be perpendicular (or have a substantial perpendicular vector) to the direction of extensibility or elasticity sought (said address, at least one) of the layer of elastic backrest. Usually, by perpendicular reference is made to the angle that remains between the longitudinal axis of the chosen cut (s), and the direction of extensibility varies between 60 and 120 degrees. In general, a sufficient number of the described cuts are perpendicular, so that the laminate is generally elastic. The provision of cuts in the two directions is advantageous when the elastic laminate is intended to be elastic in at least two different directions. A non-woven fabric used in connection with the present invention can also be a low-cut or reversibly low-cut nonwoven fabric such as that described in United States Patent Documents numbered 4,965,122.; 4,981,747; 5,114,781; 5,116,662; and 5,226,992 (all of them from Morman). In these embodiments, the non-woven fabric is stretched in a direction perpendicular to the direction of desired extensibility. When the non-woven fabric hardens in this elongated condition, it will have more stretch and recovery properties in the direction of extensibility. As used herein, the term "fiber" includes fibers of undefined length (e.g., filaments) and fibers of discrete length, e.g., short fibers. The fibers used in relation to the present invention can be multi-component fibers. The phrase "multi-component fiber" refers to a fiber having at least two structured, distinct, longitudinally coextensive polymer domains in the cross-section of the fiber, as opposed to blends in which the domains tend to be dispersed , random or unstructured. The distinguishing domains, in this way, can be formed by polymers of different kinds of polymers (for example, nylon and polypropylene) or can be formed with polymers of the same polymer class (for example, nylon), but differ in either its properties or its characteristics. The term "multi-component fiber" then includes, among other things, concentric and eccentric central-sheath fiber structures, symmetric and asymmetric collateral fiber structures, island fiber structures at sea, circular wedge fiber structures and hollow fibers of these configurations. Suitable fibers for forming a fibrous web can be produced from a wide variety of thermoplastic polymers known to form fibers. Suitable thermoplastic fiber forming polymers are selected from polyolefins, polyamides, polyesters, copolymers containing acrylic monomers and mixtures and copolymers thereof. Suitable polyolefins include polyethylene, for example, linear low density polyethylene, high density polyethylene, low density polyethylene and medium density polyethylene; polypropylene, for example, isotactic polypropylene, syndiotactic polypropylene, mixtures thereof and mixtures of isotactic polypropylene and atactic polypropylene; and polybutylene, for example, poly (1-butene) and poly (2-butene); polypentene, for example, poly-4-methylpentene-1 and poly (2-pentene); as well as mixtures and copolymers thereof. Suitable polyamides include nylon 6, nylon 6/6, nylon 10, nylon 4/6, nylon 10/10, nylon 12, nylon 6/12, nylon 12/12 and copolymers of hydrophilic polyamide, such as copolymers of caprolactam and a alkylene oxide, for example, ethylene oxide and copolymers of hexamethylene adipamide and an alkylene oxide, as well as mixtures and copolymers thereof. Suitable polyesters include polyethylene terephthalate, polybutene terephthalate, polycyclohexylenediene ethylene terephthalate, and mixtures and copolymers thereof. The acrylic copolymers include ethylene acrylic acid, ethylene methacrylic acid, ethylene methacrylate, ethylene ethylacrylate, ethylene butylacrylate and mixtures thereof. The projections, in a preferred embodiment, are formed from a polymer that is compatible with at least some of the fibers that form a fibrous web, such that they are capable of adhering in an autogenous manner. Generally, a fibrous web will have a basis weight of between 10 and 100 g / m2, preferably between 10 and 50 g / m2 and, in some embodiments, comprise at least in part, thermoplastic fibers suitable for bonding autogenous Generally, at least 10% of the fibers are of the adhesive thermoplastic type, and in specific embodiments, they vary from 20 to 100% of adhesive thermoplastic fibers. Most of the individual fibers that make up the fibrous web preferably have an average diameter of 1 to 70 μm. The backing layer generally has a basis weight ranging from 15 to 150 g / m2, preferably from 20 to 50 g / m2. If a nonwoven is used, the total nonwoven laminate in a preferred embodiment has a basis weight of between 30 and 300 g / m2, preferably, 40 to 100 g / m2. Preferably, a fibrous loop fabric should have a relatively low basis weight so that there is adequate space between the fibers of the loop fabric so that the heads of the hooks of a fastener element of the complementary burr type penetrate between the areas open of the fibers. A loop fabric, preferably, is comprised of relatively long fibers. The longer the fibers, the easier it will be to adhere these fibers to each other and to the projections of the backing layer. If extremely short fibers are used, there may be an excessive number of loose fibers without adhering or partially adhering fibers (for example, fibers with only one of their ends adhered). The fibers will be unable to tangle and hold the heads of the hooks of the fastening system of the abrojo type. The lengths of the fibers in a non-woven fabric depend on the type of process used to manufacture the fabric of non-woven loops. For example, if a carded nonwoven fabric is used, the fibers comprising the fabric can have fluctuating lengths between about 0.5 inches and about 5 inches (from about 1 cm to about 13 cm). Preferably, the fibers vary between about 2 inches and about 3 inches (between about 5 cm and about 8 cm) long. If, on the other hand, a spunbonded nonwoven fabric is used, the fibers or filaments of the fabric will normally be continuous in their length. The diameter of the fibers is a factor that determines the strength of a loop fabric and the capacity of coupling with the heads of the appropriate hooks. A common measure of diameter is known as denier. (Denier is a unit of fineness of a thread that weighs one gram per 9000 meters, so that a yard of 100 denier is thinner than a yard of 150 denier). As usual, the larger the diameter of the fiber, the stronger the fiber, but the greater will be the blasting of the hook head 49 necessary for it to fit into the fiber. The maximum diameter of the fiber that can be used depends, in part, on the opening size between the fibers and the coupling blasting of the fiber (49) of the heads of the hooks (46), as shown in Fig. . 6c. The diameter of the fibers should not be so large that the heads of the hooks can not hook and tangle with the fibers. Typically, for the currently available hook components, the fibers of a non-woven loop fabric should have a denier of between about 2 and about 15. Hooks are substantially smaller with lower denier fibers, such as, for example, from about 0.5 to about 15, or less. It is possible that fibers with deniers as low as about 0.5 to about 1.0, or less, could be used with smaller hook heads. The fibers can be called "micro denier" fibers. The amount of inter-fiber adhesion between the fibers of a nonwoven looped fabric determines, in part, the amount of open area between the fibers available for penetration of the hook heads, as well as, the integrity of the fabric. of non-woven loops. The bonding sites created by the bonds between the fibers, either internal fiber-to-fiber bonds or point-seams of the fabric as a unit, will tend to reduce the degree of freedom for the fibers to expand for the purpose of housing the fibers. heads of the hooks. But a larger number of bonding sites will increase the integrity of the fabric and reduce the number of loose fibers. The degree of inter-fiber bonding depends on the type of non-woven material used to form the loop and the degree of bonding used to increase the integrity of the fabric. The non-woven fabric could initially be peeled off and then bonded by spot bonding during the laminate manufacturing process, either before adhering the projections or by the points of attachment with the projections. The degree of bonding is generally selected so as to allow the fabric and / or fibrous web laminate to be of sufficient integrity to be handled in the manufacturing process, as well as to provide integrity to the cloth. The heads of the hooks are coupled with the individual fibers. These individual fibers are adhered or entangled in at least two points, so that the hook does not have to pull easily from the coupled fiber by detaching it, during the uncoupling of the fastening element with hooks, regardless of whether the fibrous fabric is a nonwoven. or any other type of fibrous fabric. Generally, with fibrous non-woven fabrics, the inter-fiber bonds should occupy less than about 10%, preferably less than about 6% and, optimally, less than about 2.5% of the area of the fibrous fabric. non-woven This will ensure that the space occupied by the inter-fiber joints will not interfere with the penetration of the hook heads of the complementary hook fastening element. If the non-woven fibrous web material is provided by carding, Rando fabrics, air-bonded webs, high-pressure webs, spunbond webs, or the like, the non-woven fibrous material is preferably not bonded or consolidated to maximize the open area between the fibers. However, to allow handling of the preformed fabrics, it is sometimes necessary to provide stitches and the like which must be at a level only sufficient to provide the integrity to wind the preformed fabric from a roll and in a forming process for creating the fibrous web laminate of the invention. Usually, the portion of the fibrous fabric that is detached from the backrest projections for a loop lamination, varies from 99.5 to 50% of the surface area of the backing, providing adhered areas of between 50 and 0.5% of the surface area of the non-woven fabric, preferably, the overall adhered area of the non-woven fabric ranges from 20 to 50%. 2%. The adhered areas include the areas of the fiber sheet attached to the projections of the backing layer, as well as, any pre-bonded or consolidated areas provided to improve the integrity of the fabric. The specific joint portions or areas attached to the projections of the backing layer, can generally have any width; however, they are preferably between 0.01 and 0.2 centimeters in the narrowest dimension of the width (as measured at the base of the projections). Adjacent adhesion projections, in general, have an average separation of between 50 μm and 1000 μm and, preferably, between 50 μm and 500 μm. To maintain the desired softness of the fibrous web laminate, a backing layer or layers of the film type generally have a thickness apart from projections of between 10 and 300 microns, preferably between 20 and 100 microns, which provides a soft fibrous laminate. The laminate has sufficient tensile strength to be used with confidence in continuous fabrication techniques that require a dimensionally stable material, generally having a tensile strength of at least 0.5 kg / cm, preferably from at least 1.0 kg / cm. The term "hook", as used herein, is used to designate the coupling elements of the fastener with hooks. The term "hook" is not limiting, in the sense that the coupling elements can assume any shape known in the art, as long as they are adapted to couple a complementary loop material. The hook fastening element comprises a base layer having a first surface and a second surface and a plurality of hooks extending at least from the first surface of the base. Each of the hooks, preferably, comprises a rod supported at one end on the base and an enlarged head, located at the end of the rod opposite the base. The hook fasteners used with the fibrous web laminate of the present invention can be commercially available conventional hook materials.

Example 1 A non-woven / elastic, co-extruded, profiled laminate fabric was manufactured using an apparatus similar to that shown in Figure 9. Two extruders were used to produce a two-layer extrudate, which consisted of a first extruder. polypropylene layer A 'and in a second elastic layer B'. The first layer was produced with a polypropylene homopolymer (99% 3762, 12 MFI, Atofina Inc., Houston, TX) and a 1% red concentrate with a polypropylene base. The second elastic layer was produced with a 70% mixture of KRATON G1657 SEBS block copolymer (Kraton Polymers Inc., Houston, TX) and 30% Engage 8200-ULDPE ultra low density polyethylene (Dow Chemical Co., Midland, MI). A 3.81 cm (8 RPM) single screw extruder was used to supply the 3762 polypropylene for the first layer and a 6.35 cm (10 RPM) single screw extruder to supply the KRATON / ULDPE mixture for the second layer . The temperature profiles of the barrels of both extruders were approximately the same for a feed zone of 215 ° C, which gradually increased to 238 ° C at the end of the barrels. The molten material streams from the two extruders were fed into an ABA three-layer co-extrusion feedstock (Cloeren Co., Orange, TX). The feed material was mounted on a 20 cm die, equipped with a profiled die flange similar to that shown in Figs. 12-14. The feed material and the die were maintained at 238 ° C. The ridge of the die was machined with a repetitive pattern of sine waves so that the angle (ß) created between two segments of successive channels was 67 degrees. The wavelength (W) of the repetitive pattern was 1250 microns. The geometry of the entrance was the same as the geometry of the exit for this flange of the die. This geometry of the die flange resulted in an extrudate having a? A 'layer with a discontinuous skin consisting of polypropylene ribs over a continuous elastic central layer. After the die flange gave it the shape, the extrudate was laminated into a constriction, hardened in a space slightly less than the thickness of the input materials, to two non-woven layers (31 grams / square meter of polypropylene carded, BBA Nonwovens, Simpsonville, SC), on each side of the extruded. The laminate was tempered and dragged through a water tank, at a speed of 12 meters / minute, maintaining the water temperature at approximately 45 ° C. The fabric was air dried and collected on a roll. The resulting fabric was similar to that illustrated in Figure 16.

Example 2 A profiled non-woven / elastic laminate was produced using a system similar to that shown in FIG. 1. A twin-screw extruder with a diameter of 40 mm was used, equipped with a gear pump to supply a molten polypropylene polymer (7C05N, Huntsman), at a melting temperature of about 246 ° C to a die. The die was positioned in such a way that a film of the molten polymer was extruded vertically downwards, in the direction of the interface region of a hot blade (manufacturing tool) 4 and a cooled smooth steel roll 20. Blade 4 was compressed against the smooth roller, with a pressure of 93 pounds per linear inch (163 Newtons or linear centimeter) (at a pressure that allowed the molten polymer to create a gap 2 between blade 4 and roller 20, which defined the thickness of the base movie). The blade was maintained at a temperature of 246 ° C and the smooth roller was maintained at a temperature of 4 ° C, circulating cold water through the inside of the roller. The base of the blade 4 (the side facing the smooth roller) was machined so as to have a series of slits 7 (5 mm spacing, 0.25 mm depth, 0.98 mm width), as shown in FIG. Fig. 3. Rotation of the smooth roller caused the blade to sweep the molten polymer into a layer of the base film type., with an approximate thickness of 75 microns, with projections in the direction of the machine of about 120 microns in the height corresponding to the slits in the blade, creating a structured extrusion. After the blade sweeping action, the smooth roller continued to rotate until the structured extrudate was contacted with a non-woven polypropylene substrate (31 grams / square meter, BBA Nonwovens, Simpsonville, SC) (against a roll of conformable backing (with a 75 Shore A durometer) using a narrowing pressure of 14 pounds per linear inch (25 Newtons / linear cm) The thick protrusions present in the extrudate took longer to warm than the thinner continuous base film and therefore, the projections were still sufficiently soft or were fused to form a good adhesion with the non-woven on the upper surfaces of the projections.The thinner base film did not adhere to the nonwoven. The result is shown schematically in Fig. 4. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned inv. This is what is clear from the present description of the invention.

Claims (10)

CLAIMS Having described the invention as above, the contents of the following claims are claimed as property:

1. A fibrous web laminate, characterized in that it comprises: a thermoplastic backing, having a first face and a second face, a plurality of integral thermoplastic projections extended and formed at least in part from the thermoplastic resin on one side of the back of which they extend a fibrous web attached to the backing at locations of at least some of the projections so that the fibrous web penetrates the thermoplastic resin forming the backing at the location of the projections, with the backing extended between at least two adjacent projections.

2. The fibrous web laminate according to claim 1, characterized in that the fibrous web penetrates the projections.

3. The fibrous web laminate according to claim 2, characterized in that the fibrous web is in contact with the backing between at least some of the projections but is substantially not attached to the backing between the projections.

4. The fibrous web laminate according to claim 3, characterized in that at least 2 percent to 30 percent of the area of the backrest is occupied by the projections to which the fibrous web is attached.

5. The fibrous web laminate according to claim 3, characterized in that the backing is a continuous thermoplastic film.

6. The fibrous web laminate according to claim 2, characterized in that the backing has a basis weight from 15 to 150 g / m2 and the fibrous web laminate has a basis weight from 30 to 300 g / m2. The fibrous web laminate according to claim 2, characterized in that the backing layer is a co-extruded backing with the projections formed at least in part from a thermoplastic polymer different from that of the base. 8. A laminated article of elastic fibrous fabric, characterized in that it comprises a fibrous web laminate wherein the laminate has at least one elastic region and at least one non-elastic region, each formed with a backing of thermoplastic resin having a first face and a second face, at least one of the backings forms an elastic region or non-elastic region having a plurality of integral thermoplastic projections extended and formed at least in part from the thermoplastic resin on a back side of which it extends; a fibrous web attached to the backing containing projections at locations of at least some of the projections so that the fibrous web penetrates the thermoplastic resin forming the backing at the location of the projections, with the backing extended between at least two adjacent projections. 9. A loop laminate, characterized in that it comprises: a thermoplastic backing, having a first face and a second face, a plurality of integral thermoplastic projections extended and formed at least in part from the thermoplastic resin on one side of the back of which extends; a fibrous web attached to the backing at locations of at least some of the projections so that the fibrous web penetrates the thermoplastic resin forming the backing at the location of the projections that form joint portions, with the backrest extended between at least two projections adjacent and the individual fibers of the fibrous web are attached or entangled, at least, at two points, so that a hook does not easily pull the coupled fiber during the uncoupling of the hook. The loop laminate according to claim 9, characterized in that the fibrous web is a non-woven fibrous web where the inter-fiber links of the web occupy less than about 10% of the area of the non-woven fibrous web, the portions are formed by the non-woven fibrous fabric that penetrates the thermoplastic resin forming the projections, the portion of the non-woven fibrous fabric that is not attached to the backing is from 99.5 to 50 percent of the surface area of the backing, providing portions of bond from 50 to 0.5 percent of the surface area of the non-woven fabric, preferably, the total bonded area of the non-woven fabric is from 20 to 2 percent.