Elastic Laminate

Abstract

A laminate extending in a cross direction, particularly in a CD direction, and a length direction, particularly in a MD direction, - at least one nonwoven layer formed from one or more nonwoven layers and extending across the entire width of the nonwoven, in particular in the CD direction; - formed from one or more elastic films made of an elastomeric material, at least one elastic film made of an elastomeric material secured by its upper or lower surface to a lower surface or an upper surface, respectively, of the at least one nonwoven layer and extending across the entire width of the elastic; - the ratio of the total width of the elastic body to the total width of the nonwoven fabric is between 0.3 and 0.9; - a laminate, characterized in that the SET at 100% elongation of said laminate and / or at least one elastic film made of said elastomeric material, measured in the cross direction on a sample having a length and width along which the elastomeric material extends, is greater than 6%, in particular between 6% and 30%.

Description

[Technical field]

[0001] The present invention relates to elastic laminates intended for use in the hygiene sector, in particular in diapers or adult incontinence pants, said laminates extending in a width direction generally corresponding to the direction CD (transverse or cross direction) and in a length direction generally corresponding to the unwinding direction during the production of the laminate, called the direction MD (machine direction), comprising an overlap of one or more layers of nonwoven fabrics and one or more elastic films extending over a width less than or equal to said predetermined width, in particular an overlap of two layers of a lower nonwoven fabric and an upper nonwoven fabric sandwiching an elastic film. These laminates are particularly intended for use in the manufacture of elastic rags carrying hooks and intended to be fixed to the edges of the diaper's waist in the rear center and to engage with loop elements originating from the front of the waist, forming a movable and elastically adjustable closure of the diaper. [Background technology]

[0002] Laminates of this type are known, for example, from document EP-A-1 783 257 in the name of the Applicant. Summary of the Invention [Problem to be solved by the invention]

[0003] It would be desirable to still further improve the comfort of diapers including lugs formed from such elastic laminates, and in particular, to better conform the waist of diapers including lugs formed from such elastic laminates to the body shape of the diaper wearer. [Means for solving the problem]

[0004] Thus, according to a first aspect, the present invention provides a laminate extending in a cross direction, in particular in a CD direction, and in a length direction, in particular in a MD direction, comprising: - at least one nonwoven layer, the nonwoven fabric or fabrics forming the at least one nonwoven layer extending across the entire width of the nonwoven fabric, in particular in the CD direction; - at least one elastic film made of an elastomeric material secured by its upper or lower surface, respectively, to a lower surface or an upper surface of the at least one nonwoven layer, the one or more elastic films made of an elastomeric material forming the at least one elastic film made of an elastomeric material extending across the entire width of the elastic; the ratio of the total width of the elastic body to the total width of the nonwoven fabric is between 0.3 and 0.9, preferably between 0.4 and 0.8, in particular between 0.6 and 0.8; - a laminate, characterized in that the SET at 100% elongation of the laminate and / or at least one elastic film made of an elastomeric material, measured in the cross direction using a sample having a length and width, the elastomeric material extending along the entire length and / or width of the sample, is greater than 6%, in particular greater than 15%, in particular between 6% and 30%, in particular between 15% and 30%.

[0005] Preferably, 100% of the laminate and / or at least one elastic film made of elastomeric material has a SET of more than 6%, in particular more than 7%, more than 8%, more than 9%, more than 10%, more than 11%, and possibly less than 30%, in particular less than 25%, less than 20%, less than 19%, less than 18%, less than 17%.

[0006] Preferably, according to another aspect of the present invention, which in itself forms an invention, which can also be carried out in a preferred manner independently of the other aspects of the present invention and in particular independently of the first aspect, in combination with each of these other aspects and in particular in combination with the first aspect, the elastomeric material of the elastic film or films has a Shore A hardness of between 50 and 90, in particular between 60 and 80, measured in particular in accordance with standard ISO 868:2003.

[0007] Preferably, according to another aspect of the present invention, which forms an invention in itself, instead of or in combination with the SET value at 100% of the first aspect of the present invention, the SET at 40% elongation of the laminate and / or the elastic film made of elastomeric material, measured using a sample extending along its entire length and / or across its entire width, of an elastic body made of elastomeric material forming at least one elastic film made of elastomeric material having a length and width and extending across the entire width of the elastic body, is greater than 2.25%, in particular greater than 2.5%, greater than 2.75%, greater than 3%, greater than 3.25%, in some cases less than 15%, in particular less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%, less than 8%, less than 7%, less than 6%.

[0008] Preferably, according to another aspect of the present invention forming an invention in itself, instead of or in combination with the SET values ​​at 100% and 40% of the first aspect of the present invention, the SET at 60% elongation of the laminate and / or elastic film made of elastomeric material, measured using a sample having a length and width and in which the elastic extends along its entire length and / or across its entire width, is greater than 3.5%, more particularly greater than 4%, in particular greater than 4.5%, greater than 5%, greater than 5.5%, greater than 6%, greater than 6.5%, greater than 7%, in some cases less than 20%, in particular less than 15%, less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%.

[0009] Preferably, according to another aspect of the present invention forming an invention in itself, instead of or in combination with the SET values ​​at 100%, 40% and 60% of the first aspect of the invention, the SET at 80% elongation of the laminate and / or elastic film made of elastomeric material, measured using a sample having a length and width and in which the elastic extends along its entire length and / or across its entire width, is greater than 5%, in particular greater than 6%, greater than 7%, greater than 8%, greater than 9%, greater than 10%, in some cases less than 25%, in particular less than 20%, less than 19%, less than 18%, less than 17%, less than 16%, less than 15%, less than 14%, less than 13%.

[0010] Preferably, according to another aspect of the present invention forming an invention in itself, instead of or in combination with the SET values ​​at 100%, 40%, 60% and 80% of the first aspect of the invention, the SET at 120% elongation of the laminate and / or elastic film made of elastomeric material, measured using a sample having a length and width and in which the elastic extends along its entire length and / or across its entire width, is greater than 7%, in particular greater than 8%, greater than 9%, greater than 10%, greater than 11%, greater than 12%, greater than 13%, greater than 14%, greater than 15%, greater than 16%, greater than 17%, greater than 18%, greater than 19%, greater than 20%, in some cases less than 30%, in particular less than 29%, less than 28%, less than 27%, less than 26%, less than 25%, less than 24%.

[0011] Preferably, at least one of the values ​​of the ratio [SET (%) / elongation (% / 100)] of the laminate is - Measured at elongations to 40%, 60%, 80%, 100% and 120%, where laminate failure occurs beyond an elongation to 120%, the following shall occur in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0%, during a measurement run in which a return at 40%, elongation to 100%, return to 0%, a fifth elongation to 40%, return to 0%, elongation to 120%, return to 0%, a sixth elongation to 40%, return to 0%, and elongation to break are performed, SETs of elongation to 40%, 60%, 80%, 100% and 120% are calculated at the second, third, fourth, fifth and sixth elongations to 40%, respectively; or - during a measurement run in which the following are performed in succession: a 1st stretch to 40%, return to 0%, a 2nd stretch to 40%, return to 0%, a 2nd stretch to 40%, return to 0%, a 3rd stretch to 40%, return to 0%, a 4th stretch to 40%, return to 0%, a 5th stretch to 40%, return to 0%, a SET of 40%, 60%, 80% and 100% is calculated at the 2nd, 3rd, 4th and 5th stretch to 40%, respectively; or - during a measurement run in which stretches to 40%, 60% and 80% are measured and laminate break occurs between 80% and 100% stretch, the following are performed in succession: 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0% and stretch to break, a SET of stretches to 40%, 60% and 80% is calculated at the 2nd, 3rd and 4th stretches to 40%, respectively, It is between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, the stretching being carried out along the CD (cross direction) or MD (machine direction) direction.

[0012] In particular, for at least two of the elongations of 40%, 60%, 80%, 100% and 120%, in particular for the elongations of at least 100% and 120%, the laminate ratio has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0013] In particular, for at least three of the elongations up to 40%, 60%, 80%, 100% and 120%, in particular for the elongations up to at least 80%, 100% and 120%, the laminate ratio has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0014] In particular, for at least four of the elongations up to 40%, 60%, 80%, 100% and 120%, in particular for the elongations up to at least 60%, 80%, 100% and 120%, the laminate ratio has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0015] In particular, for the five stretches of 40%, 60%, 80%, 100% and up to 120%, the laminate ratio has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0016] Preferably, according to a development which itself constitutes an invention independently of the above-mentioned first aspect, but which can be advantageously implemented in combination therewith, the SET of laminates for stretching to 80%, 100% and 120% comprises, in succession: 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0%, stretch to 100%, return to 0%, 40 %, return to 0%, elongation to 120%, return to 0%, sixth elongation to 40%, return to 0%, and elongation to break are measured during a measurement run in which a fifth elongation to 40%, return to 0%, elongation to 120%, return to 0%, sixth elongation to 40%, return to 0%, and elongation to break are performed, with lower limits of between 5% and 15% for elongation to 80% and upper limits of between 8% and 30%, particularly between 15% and 30%, and even more particularly between 15% and 25% for elongation to 120%, and the SETs for elongation to 80%, 100% and 120% are calculated at the fourth, fifth and sixth elongations to 40%, respectively.

[0017] Preferably, in the range of elongation between 40% and 80%, the ratio of the laminate [SET(%) / elongation(% / 100)] is between 6 and 22, in particular between 8 and 17%.

[0018] In particular, the SET of the laminate at 40% is between 2.5% and 8%, and / or the SET of the laminate at 60% is between 4% and 15%, in particular between 5% and 10%, and / or the SET of the laminate at 80% is between 5% and 20%, in particular between 10% and 15%, and / or the SET of the laminate at 100% is between 7% and 25%, in particular between 15% and 20%, and / or the SET of the laminate at 120% is between 7% and 30%, in particular between 10% and 27%, in particular between 20% and 25%.

[0019] Thus, by providing a laminate with an increased ratio and / or SET as described above, the advantage is achieved that when first used in a normal stretch range of 40%-80%, preferably 40%-120% for this type of laminate, the laminate automatically adjusts when worn in a diaper, especially in the area of ​​its waist elastic lugs. The increased SET and / or ratio allows the first user to plastically deform the elastic lugs of the diaper and increase the elastic lugs by stretching them manually, while maintaining a minimum elasticity in order to adjust the elastic lugs to keep them in place on the diaper wearer.

[0020] Preferably, the laminate includes a second nonwoven disposed on a second upper or lower surface, respectively, of the at least one elastic film made of an elastomeric material.

[0021] Preferably, at least one of the values ​​of the ratio [SET (%) / elongation (% / 100)] of the at least one elastic film made of an elastomeric material is - Measured for elongations to 40%, 60%, 80%, 100% and 120%, where if film break occurs beyond elongation to 120%, the following shall be performed in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0%, during a measurement run in which a return at 40%, elongation to 100%, return to 0%, a fifth elongation to 40%, return to 0%, elongation to 120%, return to 0%, a sixth elongation to 40%, return to 0%, and elongation to break are performed, SETs of elongation to 40%, 60%, 80%, 100% and 120% are calculated at the second, third, fourth, fifth and sixth elongations to 40%, respectively; or - if elongations to 40%, 60%, 80% and 100% are measured and film break occurs between 100% and 120% elongation, during a measurement run in which the following are performed in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0%, elongation to 100%, return to 0%, 5th elongation to 40%, return to 0% and elongation to break, a SET of 40%, 60%, 80% and 100% is calculated at the 2nd, 3rd, 4th and 5th elongations to 40%, respectively, or - during a measurement run in which stretches to 40%, 60% and 80% are measured and film break occurs between 80% and 100% stretch, the following are performed in succession: 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0% and stretch to break, the SETs of stretches to 40%, 60% and 80% are calculated at the 2nd, 3rd and 4th stretches to 40%, respectively, It is between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, the stretching being carried out along the CD (cross direction) or MD (machine direction) direction.

[0022] In particular, for at least two of the elongations up to 40%, 60%, 80%, 100% and 120%, in particular for the elongations up to at least 100% and 120%, the ratio of the at least one elastic film made of an elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0023] In particular, for at least three of the elongations up to 40%, 60%, 80%, 100% and 120%, in particular for elongations up to at least 80%, 100% and 120%, the ratio of the at least one elastic film made of an elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0024] In particular, for at least four of the elongations up to 40%, 60%, 80%, 100% and 120%, in particular for elongations up to at least 60%, 80%, 100% and 120%, the ratio of the at least one elastic film made of an elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0025] In particular, for the five elongations of 40%, 60%, 80%, 100% and 120%, the ratio of the at least one elastic film made of an elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

[0026] Preferably, the SET of elastic films made of elastomeric material for stretches to 80%, 100% and 120% are, in sequence: 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0%, stretch to 100%, return to 0%, 5th stretch to 40%, return to 0%, stretch to 120%. The SETs are measured during a measuring run in which the elongation, return to 0%, 6th elongation to 40%, return to 0% and elongation to break are performed, and the SETs of elongation to 80%, 100% and 120% are calculated at the 4th, 5th and 6th elongations to 40%, respectively, between lower limits of between 5% and 15% for elongation to 80% and upper limits of between 8% and 30%, in particular between 15% and 25%, for elongation to 120%, the elongations being performed according to the CD (cross direction) or MD (machine direction) directions.

[0027] Preferably, in the range of elongation between 40% and 80%, the ratio [SET(%) / elongation(% / 100)] of the at least one elastic film made of elastomeric material is between 6 and 22, in particular between 8 and 17.

[0028] In particular, the SET of at least one elastic film made of elastomeric material in 40% is between 2.5% and 8%, and / or the SET of at least one elastic film made of elastomeric material in 60% is between 4% and 15%, in particular between 5% and 10%, and / or the SET of at least one elastic film made of elastomeric material in 80% is between 5% and 20%, in particular between 10% and 15%, and / or the SET of the laminate in 100% is between 7% and 25%, in particular between 15% and 20%, and / or the SET of the laminate in 120% is between 7% and 30%, in particular between 10% and 27%, in particular between 20% and 25%.

[0029] Preferably, for a pre-stretch of up to 40% and a return to 0% followed by a stretch of up to 40%, the SET of the laminate and / or at least one elastic film made of an elastomeric material is greater than 2.25%, in particular greater than 2.5%, greater than 2.75%, greater than 3%, greater than 3.25%, possibly less than 15%, in particular less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%, less than 8%, less than 7%, less than 6%.

[0030] Preferably, for a first stretch to 40%, return to 0%, a second stretch to 40%, return to 0%, stretch to 60% and a third stretch to 40% after return to 0%, the SET of the laminate and / or at least one elastic film made of an elastomeric material is greater than 3.5%, more particularly greater than 4%, in particular greater than 4.5%, greater than 5%, greater than 5.5%, greater than 6%, greater than 6.5%, greater than 7%, in some cases less than 20%, in particular less than 15%, less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%.

[0031] Preferably, for a fourth stretch to 40% after a first stretch to 40%, return to 0%, a second stretch to 40%, return to 0%, stretch to 60%, return to 0%, a third stretch to 40%, return to 0%, stretch to 80%, return to 0%, the SET of the laminate and / or at least one elastic film made of an elastomeric material is more than 5%, in particular more than 6%, more than 7%, more than 8%, more than 9%, more than 10%, possibly less than 25%, in particular less than 20%, less than 19%, less than 18%, less than 17%, less than 16%, less than 15%, less than 14%, less than 13%.

[0032] Preferably, for a first stretch to 40%, return to 0%, a second stretch to 40%, return to 0%, stretch to 60%, return to 0%, a third stretch to 40%, return to 0%, stretch to 80%, return to 0%, a fourth stretch to 40%, return to 0%, stretch to 100% and a fifth stretch to 40% after return to 0% the SET of the laminate and / or at least one elastic film made of elastomeric material is more than 6%, in particular more than 7%, more than 8%, more than 9%, more than 10%, more than 11%, possibly less than 30%, in particular less than 25%, less than 20%, less than 19%, less than 18%, less than 17%.

[0033] Preferably, a first stretch to 40%, return to 0%, a second stretch to 40%, return to 0%, stretch to 60%, return to 0%, a third stretch to 40%, return to 0%, stretch to 80%, return to 0%, a fourth stretch to 40%, return to 0%, stretch to 100%, return to 0%, a fifth stretch to 40%, return to 0%, stretch to 120%, and return to 0%. After a sixth stretch to 40%, the SET of the laminate and / or at least one elastic film made of an elastomeric material is more than 7%, in particular more than 8%, more than 9%, more than 10%, more than 11%, more than 12%, more than 13%, more than 14%, more than 15%, more than 16%, more than 17%, more than 18%, more than 19%, more than 20%, in some cases less than 30%, in particular less than 29%, less than 28%, less than 27%, less than 26%, less than 25%, less than 24%.

[0034] In particular, according to another aspect of the present invention, which in itself forms an invention, can also be carried out in a preferred manner independently of the other aspects of the present invention and in combination with one or more of each of these other aspects, the force at 100% elongation of the laminate in the CD is greater than 7 N, in particular greater than 8 N, greater than 9 N, greater than 10 N, greater than 11 N.

[0035] Preferably the nonwoven is a short fibre based nonwoven, in particular a carded nonwoven, such as a spunlaced or heat bonded carded nonwoven.

[0036] Preferably, the thickness of the elastic film made of elastomeric material is between 30 and 60 micrometers, in particular between 40 and 60 micrometers, in particular the thickness of the elastic film made of elastomeric material is measured in the rest state before the first stretching. Preferably, the elastic film made of elastomeric material is an elastic film comprising at least 50% by weight of elastomeric material, in particular at least 60% by weight of elastomeric material, more in particular at least 70% by weight of elastomeric material, even more in particular at least 80% by weight of elastomeric material, and / or up to 100% by weight of elastomeric material, optionally less than 99% by weight of elastomeric material, in particular optionally less than 98% by weight of elastomeric material.

[0037] According to a preferred embodiment, the at least one film is fixed to the at least one nonwoven layer by means of an adhesive, e.g., an adhesive interposed therebetween, along strips or lines of adhesive which extend longitudinally in the direction MD and are spaced apart from one another in the direction CD.

[0038] According to a preferred embodiment of the invention, the curve showing the SET of the laminate and / or elastic film made of elastomeric material as a function of elongation rises in the range of 40% to 120% and in particular has a slope greater than 0.10 per % of elongation / stretch / stretch, in particular between 0.11 and 0.40 per % of elongation / stretch / stretch.

[0039] The present invention also relates to a baby diaper or adult incontinence pants comprising at least one laminate according to the invention, in particular for forming hook tabs arising laterally from the rear side of the waist of the diaper or incontinence pants, such that the hooks engage with loops arising from the front side of the waist of the diaper, for achieving closure of the diaper or incontinence pants.

[0040] The present invention also relates to a laminate with hooks, comprising a laminate according to the invention and at least one wrap with hooks fixed to said laminate, in particular to the upper nonwoven layer. [Brief description of the drawings]

[0041] [Figure 1] 1 is a graph showing the curve of force as a function of elongation obtained during a measurement run of 10 cycles + break for Example 1 of the laminate of the invention.

[0042] [Diagram 2] 1 is a graph showing the curve of force as a function of elongation obtained during the measurement run of 10 cycles + break for Comparative Example 1.

[0043] [Figure 2A] 1 is a graph showing the curve of force as a function of elongation obtained during the measurement run of 10 cycles + break for Comparative Example 2.

[0044] [Diagram 3] 2 is a graph showing the portion of the curve in the previous figure for a second stretch / extension / extension to 40% for Example 1 and Comparative Example 2, respectively.

[0045] [Figure 4] 2 is a graph showing the portion of the curve in the previous figure for the third stretch / extension / extension to 40% for Example 1 and Comparative Example 2, respectively.

[0046] [Diagram 5] 2 is a graph showing the portion of the curve in the previous figure for the fourth stretch / extension / extension to 40% for Example 1 and Comparative Example 2, respectively.

[0047] [Figure 6] 2 is a graph showing the portion of the curve in the previous figure for the fifth stretch / extension / extension to 40% for Example 1 and Comparative Example 2, respectively.

[0048] [Figure 7] 2 is a graph showing the portion of the curve in the preceding figure for the sixth stretch / extension / extension to 40% for Example 1 and Comparative Example 2, respectively.

[0049] [Figure 8] 1 is a table showing all relaxation values ​​(as percentages) and forces (in Newtons) for all samples in Table 1, as well as their respective average values.

[0050] [Figure 8A] A summary of these measurements is given in Table 1, which is a table showing all the measurements for all samples.

[0051] [Figure 9] 1 is a cross-sectional view of a laminate according to the present invention;

[0052] [Figure 10] FIG. 1 illustrates a diaper including elastic lugs formed from a laminate according to the present invention.

[0053] [Figure 11] 2 is a graph showing a portion of the curve of FIG. 1 and illustrating a method for measuring SET. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0054] In FIG. 9, the laminate comprises, successively from top to bottom, an upper nonwoven layer 1, two elastic films 2d, 2g made of elastomeric material on the right and left sides respectively, and a lower nonwoven layer 3.

[0055] The two elastic films 2d, 2g extend in the direction CD a distance shorter than the distance extended by the two nonwoven layers 1 and 3 so that two end regions and a central region free of elastic film are formed at the left and right ends and the central portion of the laminate.

[0056] The upper nonwoven layer 1 and the elastic films 2d, 2g are fixed between them by interposing strips or lines 4d, 4g of adhesive, in particular pressure sensitive adhesive, which strips or lines extend longitudinally in the direction MD and are spaced apart from one another in the direction CD.

[0057] Similarly, the lower nonwoven layer 3 and the elastic films 2d, 2g are fixed therebetween by interposing strips or lines 5d, 5g of adhesive, in particular pressure-sensitive adhesive, which strips or lines extend longitudinally in the direction MD and are spaced apart from one another in the direction CD.

[0058] In the elastic-free regions, the two nonwovens 1 and 3 are directly fixed to each other (i.e. only adhesive is present between them, without any intervening elastic film) by fields 6d, 7d, 6c, 7c, 6g, 7g extending in the MD direction, respectively to the right, center and left, and having a width substantially equal to the width of the end and center regions, respectively.

[0059] As can be seen in Fig. 9, the two nonwoven layers, the lower and the upper, extend in the CD direction over the entire width of the laminate. Said width represents the entire width of the nonwoven. The two elastic films 2g, 2d made of elastomeric material each extend over a respective width that is less than half the width of the laminate. The sum of the respective widths over which the two films extend represents the total elastic width. Here, the relationship or ratio of the total elastic width to the total nonwoven width is between 0.4 and 0.8, and in particular in Fig. 9 is equal to about 0.6.

[0060] According to the present invention, it is possible to use adhesives such as non-reactive hot melt adhesives, such as Bostik's H2511, or Bostik's XPU18314 (a reactive PU adhesive). Preferably, these adhesives have similar chemical properties to the elastomeric film. For example, one of these adhesives is analyzed using an infrared spectrometer to identify chemical functions, or liquid chromatography is used to separate and quantify substances, preferably identifying traces of one or more components or derivatives of one or more materials of the elastomeric film.

[0061] Preferably, these adhesives are based on SIS, SBS, SEBS and SEPS, allowing good compatibility with the film due to similar chemistry.

[0062] Preferably, the adhesive layer has a thickness of 15 g / m 2 Less than 12 g / m 2 less than 8 g / m 2 has a basis weight of less than

[0063] In the present invention, nonwoven fabric is intended to mean the product obtained after the formation of a wrap of consolidated fibres and / or filaments. The consolidation may be mechanical, chemical or thermal, resulting in the presence of bonds between the fibres and / or filaments. This consolidation may be direct, i.e. directly between the fibres and / or filaments using welding, or indirect, i.e. using an intervening layer between the fibres and / or filaments, for example a layer of adhesive or a layer of binder. The term "nonwoven fabric" relates to a structure in the form of a tape or wrap of fibres and / or filaments intertwined in a non-uniform or irregular manner or randomly. A nonwoven fabric may have a single layer structure or a structure comprising several layers. Nonwoven fabrics can be manufactured from different synthetic and / or natural materials. Natural materials are, for example, cellulose fibres such as cotton, jute, paper pulp, hemp, etc., and may also include regenerated cellulose fibres such as rayon or viscose (cellulose acetate). Natural fibres for nonwoven fabric materials can be prepared using various processes such as carding. By way of example, synthetic materials include, but are not limited to, synthetic thermoplastic polymers that are known to form fibers and / or filaments, including, but not limited to, polyolefins, such as polyethylene, polypropylene, polybutylene, etc.; polyamides, such as polyamide 6, polyamide 6.6, polyamide 10, polyamide 11, polyamide 12, etc.; polyesters, such as polyethylene terephthalate, polybutylene terephthalate, polylactic acid (PLA), or PHA (polyhydroxyalkanoates), polycarbonates, polystyrene, thermoplastic elastomers, vinyl polymers, polyurethanes, and mixtures and copolymers thereof. Some of these materials may be bioplastics, such as bio-derived (e.g., bio-PE, PLA, polyamide 11, viscose (cellulose acetate), etc.) and / or biodegradable (PLA, etc.). In a general manner, fibers and filaments differ primarily in their length and the method of manufacture.

[0064] Continuous filaments refer to individual elements that are very long compared to their cross-sectional diameter, which are continuously extruded to directly form the nonwoven wrap, and can then be consolidated by heat sealing or any other means that allows achieving the desired performance and / or transport thereof. Preferably, the continuous filaments have a length of more than 120 mm.

[0065] Fibers are meant as a collective term to denote fiber materials or fiber material elements of reduced length that are shorter than the length of a continuous filament and can be spun and / or used in forming nonwoven fabrics. Two types of fibers are distinguished: short fibers, which are discontinuously formed and have a short length of less than 50 mm (preferably between 25 mm and 50 mm), and long fibers, which are discontinuously formed and have a long length of more than 50 mm (preferably between 60 mm and 120 mm).

[0066] Unlike continuous filaments that are consolidated directly after extrusion, the fibers are usually oriented and organized into wraps during a carding process well known to those skilled in the art, which can then be consolidated by heat fusing or any other means that allows achieving the desired performance and / or transport thereof.

[0067] According to the present invention, a film refers to a sheet or wrap type material whose length and width are each greater than its thickness (e.g., by a ratio of 10, 50, or even 1000 times or more). Typically, the thickness of a film is less than 0.7 mm, in particular less than 0.5 mm or less. In particular, a string or thread, or a set of strings and / or threads, is not a film.

[0068] For the elastic films, it is possible to use thermoplastic elastomer materials or mixtures containing this type of material, in particular recyclable, polyolefin elastomer type materials (based for example on polypropylene (PP) or polyethylene (PE), such as the Vistamaxx series by Exxon or the Infuse, Engage, Versify series by Dow Chemical, either in association with each other or with other polyolefins, depending on the performance intended for the application).For example, propylene-based elastomers, in particular the "Vistamaxx" series by EXXON MOBIL under the product numbers 6000 and / or 6102 and / or 6102FL and / or 6202 and / or 6202FL and / or 6502, 7050BF and / or 7810, and / or olefin block copolymers, in particular the "Infuse" series by DOW CHEMICAL under the product numbers 9000 and / or 9007 and / or 9010 and / or 9077 and / or 9100 and / or 9107, and / or polyolefin elastomers, in particular the "Infuse" series by DOW CHEMICAL under the product numbers 8402 and / or 8401 and / or 8411 and / or 8407 and / or 8137 and / or 8200 and / or 8207. It is possible to use, for example, the "Engage" series by DOW CHEMICAL, and / or propylene / ethylene copolymers, in particular the "Versify" series by DOW CHEMICAL under the product numbers 3200 and / or 3300 and / or 3401 and / or 4200, and / or thermoplastic elastomers (TPE-E) (copolyesters), such as APINAT DP1888-75CV or APINAT DP1888-75 by TRINSEO, and / or in particular NP-EL208-65 by NaturPlast, and / or thermoplastic urethane elastomers (TPE-U) and / or thermoplastic amide elastomers (TPE-A), thermoplastic styrene elastomers (TPE-S) and / or polyesters, more broadly speaking, having a hardness of less than 90 Shore A, in particular between 50 and 90 Shore A.

[0069] It is possible to produce the laminate according to the invention, in particular, by preparing one or more elastic films by extruding one or more films through one or more extrusion dies to obtain, after cooling, one or more substantially solid films, as described in EP-A-1783257, by interposing a fixing agent, by laminating one or more substantially solid films onto a nonwoven layer, and also, in the case of non-elastic or insufficiently elastic nonwovens, by stretching the laminate in the transverse direction in order to destroy the cohesive forces between and / or the fibers of the nonwoven. Said transverse stretching can in particular be carried out by "activating", i.e. passing the composite resulting from the laminate through an activation point where two toothed rollers ensure transverse stretching of the laminate in order to "activate" the laminate, i.e. "stretching" a non-elastic or only slightly elastic nonwoven and / or elastic film, thereby increasing its stretching capacity, thereby releasing the elasticity of the elastic bodies in the laminate and thus increasing their elasticity.

[0070] Comparative Example 1 Comparative Example 1 includes an elastic film made of an elastomeric material fixed between two layers of nonwoven fabric via two layers of adhesive. The upper nonwoven fabric is a 30 g / m2 nonwoven fabric available from Sandler company. 2 The bottom nonwoven fabric is a 22 g / m spunlace nonwoven fabric available from Sandler company. 2 The thermally bonded carded nonwoven fabric is called "Sawabond 4111" and has a basis weight of 50 g / m. The elastic film made of elastomeric material has a basis weight of 50 g / m. 2 The adhesive is derived from the SIS material. SIS-based adhesives have a basis weight of approximately 4.5 g / m per adhesive layer. 2 The product is activated according to the disk activation block normally used in the field.

[0071] Comparative Example 2 Comparative Example 2 includes an elastic film made of an elastomeric material fixed between two layers of nonwoven fabric via two layers of adhesive. The upper nonwoven fabric is the same as the lower nonwoven fabric and is available from Sandler company with a basis weight of 25 g / m 2 The product number is "Sawasoft2626" nonwoven spunlace. The elastic film made of elastomer material has a basis weight of 50g / m 2 The adhesive is derived from the SIS material. SIS-based adhesives have a basis weight of approximately 4.5 g / m per adhesive layer. 2 The product is not activated.

[0072] Example 1 Example 1 includes an elastic film made of an elastomeric material fixed between two layers of nonwoven fabric via two layers of adhesive. The upper nonwoven fabric is the same as the lower nonwoven fabric and has a basis weight of 20 g / m2, available from JACOB HOLM INDUSTRIES company. 2 The nonwoven spunlace is 100% PLA-FLAT with product number “15.020.001.0200.01.02” from TRINSEO. The elastic film made of elastomeric material is derived from TPE-E with product number “APINAT DP1888-75CV” available from TRINSEO company, with a basis weight of 60 g / m 2 The average adhesive basis weight is approximately 4 g / m per layer. 2 and available from the BOSTIK company, with the product number "XPU18314". The adhesive is applied all over the elastic-free zones and the elastic zones close to the elastic ends, and in lines or strips in the other zones. The laminate is passed through an activation block consisting of two rollers containing stacked disks with a tooth spacing of 3.33 mm, without the product being held laterally by, for example, central and / or lateral straps.

[0073] Example 3

[0074] Example 3 is similar to Example 1, with the following differences: the average basis weight of the adhesive is about 3.5 g / m 2and the adhesive is distributed differently, i.e., the adhesive lines and / or adhesive strips are spaced further apart from each other in the CD in the elastic zone.

[0075] To measure the SET, in particular the SET at 100%, and the ratio to the elongation of an element such as a laminate or an elastic film [SET(%) / elongation(% / 100)], one can proceed as follows using a dynamometer, e.g. a "Zwick / Roell Z2.5 dynamometer" type 2.5Kn Zwicki with the "testXpertIII" application software, a point acquisition frequency of 500Hz, a 100N load cell and upper and lower jaws, e.g. according to the "8297-2.5kN" model:

[0076] Sample preparation: Step 0a: An element, such as an elastic laminate or an elastic film made of elastomeric material, such as a laminate taken directly from a reel or a diaper taken from a pack of diapers, is conditioned for 24 hours in a normal atmosphere at a temperature of 23°C (+ / - 2°C) and a relative humidity of 50% (+ / - 5%). Step 0b: Cut a sample having dimensions of 40 mm width and at least 40 mm height, preferably using a circular blade cutter, so as to be characterised over a height of 30 mm and a width of 40 mm. The sample is cut from the laminate ensuring that it includes an elastic film of elastomeric material extending across its entire width and length.

[0077] The product is stretched by vertical displacement of the upper jaw, while the lower jaw is fixed, to an elongation value for which the SET is to be measured, in particular to 100%, for example at a speed of 508 mm / min, then held in that position for 30 seconds, then returned to the initial position at a constant speed and left for 60 seconds (end of the first cycle), after which it is again stretched to 100%, held for 30 seconds and returned to the initial position (end of the second cycle). In this way a curve is obtained which expresses the stretch force in % as a function of the elongation, said curve having a hysteresis, so that the SET can be determined by the following calculation formula: SET=L1-L0 (In the formula: L0: Intersection with the x-axis at the start of the test, i.e., the start of the first cycle (elongation%) L1: After returning to the original position and waiting for 60 seconds, the intersection point with the x-axis at the start of the second cycle (elongation%). The above method can also be carried out at elongation values ​​other than 100%, for example 40%, 60%, 80% or 120%, provided that the elongation value used in measuring SET is not less than the pre-elongation of the product / sample.

[0078] Calculation of SET for values ​​of 40%, 60%, 80%, 100%, and 120% and the ratio of SET to elongation (or elongation) (% / 100) 1. Adjust the jaw distance to 30mm. 2. Place the cut sample in the jaws so that the 40mm width fits completely in the jaws, and test the elastic laminate with a height of 30mm; 3. Apply preload up to 0.05N, 4. Measurements are taken during an undelayed stretch at a rate of 508 mm / min to 40% elongation (the measurement is the shape of the curve showing the applied force as a function of elongation or derived from said curve) (first stretch / stretch / stretch to 40%), 5. Return the jaws to their original position 30 mm and hold the sample for 60 seconds. 6. Measurements are taken while stretching to 40% elongation at a rate of 508 mm / min and holding the sample for 30 seconds (2nd stretch / extension / stretch to 40%); 7. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 8. Measurements are taken without delay while stretching to 60% elongation at a rate of 508 mm / min. 9. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 10. Measurements are taken while stretching to 40% elongation at a rate of 508 mm / min and holding the sample for 30 seconds (third stretch / extension / stretch to 40%); 11. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 12. Measurements are taken without delay while stretching to 80% elongation at a rate of 508 mm / min. 13. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 14. Measurements are taken while stretching to 40% elongation at a rate of 508 mm / min and holding the sample for 30 seconds (4th stretch / extension / stretch to 40%); 15. Return to the initial position of 30 mm and hold the sample for 60 seconds. 16. Measurements are taken without delay while stretching to 100% extension at a rate of 508 mm / min. 17. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 18. Measurements are taken while stretching to 40% elongation at a rate of 508 mm / min and holding the sample for 30 seconds (5th stretch / extension / stretch to 40%); 19. Return to the initial position of 30 mm and hold the sample for 60 seconds. 20. Measurements are taken during extension to 120% elongation at a speed of 508 mm / min without tempo. 21. Return the jaws to their original position of 30 mm and hold the sample for 60 seconds. 22. Measurements are taken while stretching to 40% elongation at a rate of 508 mm / min and holding the sample for 30 seconds (6th stretch / extension / stretch to 40%). 23. Return to the initial position of 30 mm and hold the sample for 60 seconds. Next 24. Measurements are taken until the elastic laminate breaks when extended at a rate of 508 mm / min.

[0079] Thus, finally, a curve (10 cycles + break) is obtained, as obtained in the examples and comparative examples described below, and is shown in FIG. 1. Then, for each elongation value, the SET is measured on the curve (10 cycles + break) to 40%, 60%, 80%, 100% and 120%, respectively, and these are shown in Table 1 below. FIG. 11 shows a curve showing the force as a function of the percentage elongation. The SET is taken directly from this, corresponding to the elongation value of the points of the curve chosen in the force range [0.05 N - 0.1 N], said points being chosen starting from the point of maximum elongation and decreasing strictly until the point of minimum force is reached. Thus, in FIG. 11, the SET recorded is 4.60%.

[0080] In particular, if the break of the specimen occurs before these elongation values, steps 16 to 23 corresponding to elongation up to 100% and 120% can be omitted in order to obtain, finally, curves called 6 cycles + break or 8 cycles + break, as obtained in the examples and comparative examples described below. The SET is then measured for each elongation value on the curve (6 cycles + break) up to 40%, 60% and 80%, respectively. Figure 8 also shows for each example and comparative example the second, third, fourth, fifth and sixth elongations up to 40%, the obtained relaxation values ​​(in percentages) and their average values, as well as the obtained forces (in Newtons) and their average values. Table 1 below shows the results obtained in the test of 6 cycles + break and the test of 10 cycles + break for comparative examples 1 and 2, as well as for examples 1 and 3 above. For these measurements, three specimens M1, M2 and M3 were made for each example and comparative example, and the average values ​​of the three were entered. The results of all the specimens are shown in the table of Figure 8.

[0081] [Table 1]

Claims

1. A laminate extending in a width direction, particularly in a CD direction, and a length direction, particularly in an MD direction, at least one nonwoven layer formed from one or more nonwoven layers and extending across the entire width of the nonwoven, in particular in the CD direction; - at least one elastic film made of an elastomeric material, fixed by its upper or lower surface to the lower or upper surface, respectively, of said at least one nonwoven layer, and extending across the entire width of the elastic; Including, - the ratio of the total width of the elastic to the total width of the nonwoven is between 0.3 and 0.9; - a laminate characterized in that the SET at 100% elongation of said laminate and / or at least one elastic film made of said elastomeric material, measured in the cross-sectional direction on a sample having a length and a width along which the elastomeric material extends, is greater than 6%, in particular between 6% and 30%.

2. 2. The laminate of claim 1, wherein the ratio of the overall width of the elastic to the overall width of the nonwoven is between 0.4 and 0.

8.

3. 2. The laminate of claim 1, characterized in that the SET at 100% elongation of the laminate, measured using a sample having a length and width and with the elastic extending along its entire length and width, is greater than 15%, in particular between 15% and 30%.

4. 10. The laminate of claim 1, wherein the material of said one or more elastic films made of elastomeric material has a Shore A hardness of between 50 and 90.

5. 5. The laminate of claim 4, wherein the material of said one or more elastic films made of elastomeric material has a Shore A hardness of between 60 and 80.

6. At least one of the values ​​of the ratio [SET (%) / elongation (% / 100)] of the laminate is - Measured for elongations to 40%, 60%, 80%, 100% and 120%, where laminate failure occurs beyond an elongation to 120%, the following in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, 3rd elongation to 40%, return to 0%, 4th elongation to 40%, return to 0%, 5th elongation to 40%, return to 0%, 6th elongation to 40%, return to 0%, 7th elongation to 40%, return to 0%, 8th elongation to 40%, return to 0%, 9th elongation to 40%, return to 0%, 10th elongation to 40%, return to 0%, 11th elongation to 40%, return to 0%, 12th elongation to 40%, return to 0%, 13th elongation to 40%, return to 0%, 14th elongation to 40%, return to 0%, 15th elongation to 40%, return to 0%, 16th elongation to 40%, return to 0%, 17th elongation to 40%, return to 0%, 18th elongation to 40%, return to 0%, 19th elongation to 40%, return to 0%, 20th elongation to 40%, return to 0%, 21st elongation to 40%, return to 0%, 22nd elongation to 40%, return to 0%, 23rd elongation to 40%, return to 0%, 24th elongation to 40%, return to 0%, 25th elongation to 40%, return to 0%, 26th elongation to 40%, return to 0%, 27th elongation to 40%, return to 0%, 28th elongation to During a measurement run in which a return at 40%, an elongation to 100%, a return to 0%, a fifth elongation to 40%, a return to 0%, an elongation to 120%, a return to 0%, a sixth elongation to 40%, a return to 0%, and an elongation to break are performed, SETs of elongation to 40%, 60%, 80%, 100% and 120% are calculated at the second, third, fourth, fifth and sixth elongations to 40%, respectively; or - during a measurement run in which the following are performed in succession: a first extension to 40%, a return to 0%, a second extension to 40%, a return to 0%, an extension to 60%, a return to 0%, a third extension to 40%, a return to 0%, an extension to 80%, a return to 0%, a fourth extension to 40%, a return to 0%, an extension to 100%, a return to 0%, a fifth extension to 40%, a return to 0%, and an extension to break, the SETs for extension to 40%, 60%, 80% and 100% are calculated at the second, third, fourth and fifth extensions to 40%, respectively; or - measured for elongations to 40%, 60% and 80%, where break of the laminate occurs between 80% and 100% elongation, during a measurement run in which the following are performed in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0% and elongation to break, the SETs for elongation to 40%, 60% and 80% are calculated at the 2nd, 3rd and 4th elongation to 40%, respectively, 2. A laminate according to claim 1, characterized in that the stretching is between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, and that the stretching is carried out according to the CD (cross direction) or MD (machine direction) direction.

7. 7. The laminate according to claim 6, characterized in that for at least two of the elongations to 40%, 60%, 80%, 100% and 120%, in particular for elongations to at least 100% and 120%, the ratio of the laminate has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

8. 7. The laminate according to claim 6, characterized in that for at least three of the elongations to 40%, 60%, 80%, 100% and 120%, in particular for elongations to at least 80%, 100% and 120%, the ratio of the laminate has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

9. 7. The laminate according to claim 6, characterized in that for at least four of the elongations to 40%, 60%, 80%, 100% and 120%, in particular for at least elongations to 60%, 80%, 100% and 120%, the ratio of the laminate has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

10. 7. The laminate according to claim 6, characterized in that the ratio of the laminate has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, for five elongations of 40%, 60%, 80%, 100% and 120%.

11. SET of laminates for stretches to 80%, 100% and 120%, in sequence: 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0%, stretch to 100%, return to 0%, 5th stretch to 40%, return to 0%, stretch to 120%, 0% 2. The laminate according to claim 1, characterized in that the SET for elongation to 80%, 100% and 120% is calculated at the fourth, fifth and sixth elongation to 40%, respectively, as measured during a measuring operation in which the following elongations are performed: return to 40%, sixth elongation to 40%, return to 0% and elongation to break, and between a lower limit of between 5% and 15% for an elongation to 80% and an upper limit of between 8% and 30%, in particular between 15% and 25%, for an elongation to 120%;

12. 12. The laminate according to claim 11, characterized in that in the range of elongation between 40% and 80%, the ratio of the laminate [SET (%) / Elongation (%) / 100] is between 6 and 22, in particular between 8 and 17.

13. 12. Laminate according to claim 11, characterized in that the SET of the laminate at 40% is between 2.5% and 8%, and / or the SET of the laminate at 60% is between 4% and 15%, in particular between 5% and 10%, and / or the SET of the laminate at 80% is between 5% and 20%, in particular between 10% and 15%, and / or the SET of the laminate at 100% is between 7% and 25%, in particular between 15% and 20%, and / or the SET of the laminate at 120% is between 7% and 30%, in particular between 10% and 27%, in particular between 20% and 25%.

14. 10. The laminate of claim 1, wherein the laminate includes a second nonwoven fabric disposed on a second upper or lower surface, respectively, of the elastic film of elastomeric material.

15. At least one elastic film made of an elastomeric material has a ratio [SET (%) / elongation (% / 100)] of: - Measured for elongations to 40%, 60%, 80%, 100% and 120%, where film break occurs beyond elongation to 120%, the following in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, 3rd elongation to 40%, return to 0%, 4th elongation to 40%, return to 0%, 5th elongation to 40%, return to 0%, 6th elongation to 40%, return to 0%, 7th elongation to 40%, return to 0%, 8th elongation to 40%, return to 0%, 9th elongation to 40%, return to 0%, 10th elongation to 40%, return to 0%, 11th elongation to 40%, return to 0%, 12th elongation to 40%, return to 0%, 13th elongation to 40%, return to 0%, 14th elongation to 40%, return to 0%, 15th elongation to 40%, return to 0%, 16th elongation to 40%, return to 0%, 17th elongation to 40%, return to 0%, 18th elongation to 40%, return to 0%, 19th elongation to 40%, return to 0%, 20th elongation to 40%, return to 0%, 21st elongation to 40%, return to 0%, 22nd elongation to 40%, return to 0%, 23rd elongation to 40%, return to 0%, 24th elongation to 40%, return to 0%, 25th elongation to 40%, return to 0%, 26th elongation to 40%, return to 0%, 27th elongation to 40%, return to 0%, 28th elongation to During a measurement run in which a return at 40%, an elongation to 100%, a return to 0%, a fifth elongation to 40%, a return to 0%, an elongation to 120%, a return to 0%, a sixth elongation to 40%, a return to 0%, and an elongation to break are performed, SETs of elongation to 40%, 60%, 80%, 100% and 120% are calculated at the second, third, fourth, fifth and sixth elongations to 40%, respectively; or - if elongations to 40%, 60%, 80% and 100% are measured and film break occurs between 100% and 120% elongation, during a measuring run in which the following are performed in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, 80% elongation to 0%, 4th elongation to 40%, return to 0%, 100% elongation to 0%, 5th elongation to 40%, return to 0% and elongation to break, the SETs for elongation to 40%, 60%, 80% and 100% are calculated at the 2nd, 3rd, 4th and 5th elongations to 40%, respectively, or - measured for elongations to 40%, 60% and 80%, where break of the film occurs between 80% and 100% elongation, during a measurement run in which the following are performed in succession: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0% and elongation to break, the SETs for elongations to 40%, 60% and 80% are calculated at the 2nd, 3rd and 4th elongations to 40%, respectively, 2. A laminate according to claim 1, characterized in that the stretching is between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, and that the stretching is carried out according to the CD (cross direction) or MD (machine direction) direction.

16. 16. The laminate according to claim 15, characterized in that for at least two of the elongations to 40%, 60%, 80%, 100% and 120%, in particular for elongations to at least 100% and 120%, the ratio of the at least one elastic film made of elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

17. 16. A laminate according to claim 15, characterized in that the ratio of the at least one elastic film made of elastomeric material to at least three of the elongations to 40%, 60%, 80%, 100% and 120%, in particular to at least 80%, 100% and 120%, has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

18. 16. A laminate according to claim 15, characterized in that the ratio of the at least one elastic film made of elastomeric material to at least four of the elongations to 40%, 60%, 80%, 100% and 120%, in particular to at least 60%, 80%, 100% and 120%, has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20.

19. 16. The laminate according to claim 15, characterized in that the ratio of the at least one elastic film made of elastomeric material has a value between 6 and 30, in particular between 8 and 25, in particular between 8 and 20, for five elongations of 40%, 60%, 80%, 100% and 120%.

20. A SET of elastic films made of elastomeric material for elongations to 80%, 100% and 120% successively: 1st elongation to 40%, return to 0%, 2nd elongation to 40%, return to 0%, elongation to 60%, return to 0%, 3rd elongation to 40%, return to 0%, elongation to 80%, return to 0%, 4th elongation to 40%, return to 0%, elongation to 100%, return to 0%, 5th elongation to 40%, return to 0%, elongation to 120%, return to 0%, 60% elongation to 40%, return to 0%, 70% elongation to 40%, return to 0%, elongation to 120%, return to 0%, 80% elongation to 40%, return to 0%, 90% elongation to 40%, return to 0%, elongation to 120%, return to 0%, 130% elongation to 40%, return to 0%, elongation to 120%, return to 0%, 140% elongation to 40%, return to 0%, elongation to 120%, return to 0%, 150% elongation to 40%, return to 0%, elongation to 120%, return to 0%, 160% elongation to 40%, return to 0%, 170% elongation to 40%, return to 0%, 180% elongation to 40%, return to 0%, 190% elongation to 40%, return to 0%, 200% elongation to 40%, return to 0%, 210% elongation to 40%, return to 0%, 220% elongation to 40%, return to 0%, 230% elongation to 40%, return to 0%, 24 16. A laminate according to claim 15, characterized in that the SETs for elongation to 80%, 100% and 120%, calculated at the fourth, fifth and sixth elongations to 40%, respectively, are measured during a measuring operation in which a sixth elongation at 40%, a return to 0% and an elongation to break are carried out, are between lower limits of between 5% and 15% for an elongation to 80% and upper limits of between 8% and 30%, in particular between 15% and 25%, for an elongation to 120%, and the elongations are carried out according to the CD (cross direction) or MD (machine direction) direction.

21. 16. A laminate according to claim 15, characterized in that the ratio [SET (%) / Elongation (%) / 100] of the at least one elastic film made of elastomeric material is between 6 and 22, in particular between 8 and 17, in the range of elongation between 40% and 80%.

22. 11. The laminate according to claim 10, characterized in that the SET of the at least one elastic film made of elastomeric material at 40% is between 2.5% and 8%, and / or the SET of the at least one elastic film made of elastomeric material at 60% is between 4% and 15%, in particular between 5% and 10%, and / or the SET of the at least one elastic film made of elastomeric material at 80% is between 5% and 20%, in particular between 10% and 15%, and / or the SET of the laminate at 100% is between 7% and 25%, in particular between 15% and 20%, and / or the SET of the laminate at 120% is between 7% and 30%, in particular between 10% and 27%, in particular between 20% and 25%.

23. 2. The laminate according to claim 1, characterized in that, for a pre-elongation to 40% and a return to 0% followed by an elongation to 40%, the SET of the laminate and / or the at least one elastic film made of an elastomeric material is greater than 2.25%, in particular greater than 2.5%, greater than 2.75%, greater than 3%, greater than 3.25%, in some cases less than 15%, in particular less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%, less than 8%, less than 7%, less than 6%.

24. 2. The laminate according to claim 1, characterized in that the SET of the laminate and / or at least one elastic film made of an elastomeric material is greater than 3.5%, more particularly greater than 4%, in particular greater than 4.5%, greater than 5%, greater than 5.5%, greater than 6%, greater than 6.5%, greater than 7%, in some cases less than 20%, in particular less than 15%, less than 14%, less than 13%, less than 12%, less than 11%, less than 10%, less than 9%, for a third stretch to 40% after a first stretch to 40%, a return to 0%, a second stretch to 40%, a return to 0%, a stretch to 60%, and a return to 0%.

25. 2. The laminate according to claim 1, characterized in that the SET of the laminate and / or at least one elastic film made of an elastomeric material is greater than 5%, in particular greater than 6%, 7%, 8%, 9%, 10%, or in some cases less than 25%, in particular less than 20%, less than 19%, less than 18%, less than 17%, less than 16%, less than 15%, less than 14%, less than 13% for a fourth stretch to 40% after a first stretch to 40%, a return to 0%, a second stretch to 40%, a return to 0%, a stretch to 60%, a return to 0%, a third stretch to 40%, a return to 0%, a stretch to 80%, and a return to 0%.

26. 2. The laminate according to claim 1, characterized in that the SET of the laminate and / or the at least one elastic film made of elastomeric material is greater than 6%, in particular greater than 7%, 8%, 9%, 10%, 11%, or in some cases less than 30%, in particular less than 25%, less than 20%, less than 19%, less than 18%, less than 17% for a fifth stretch to 40% after a first stretch to 40%, a return to 0%, a second stretch to 40%, a return to 0%, a stretch to 60%, a return to 0%, a third stretch to 40%, a return to 0%, a stretch to 80%, a return to 0%, a fourth stretch to 40%, a return to 0%, a stretch to 100%, and a return to 0%.

27. 1st stretch to 40%, return to 0%, 2nd stretch to 40%, return to 0%, stretch to 60%, return to 0%, 3rd stretch to 40%, return to 0%, stretch to 80%, return to 0%, 4th stretch to 40%, return to 0%, stretch to 100%, return to 0%, 5th stretch to 40%, return to 0%, stretch to 120%, and 6th stretch to 40% followed by return to 0%.

2. The laminate according to claim 1, characterized in that, for an elongation of 0.5 mm, the SET of the laminate and / or of the at least one elastic film made of an elastomeric material is greater than 7%, in particular greater than 8%, greater than 9%, greater than 10%, greater than 11%, greater than 12%, greater than 13%, greater than 14%, greater than 15%, greater than 16%, greater than 17%, greater than 18%, greater than 19%, greater than 20%, or in some cases less than 30%, in particular less than 29%, less than 28%, less than 27%, less than 26%, less than 25%, less than 24%.

28. 10. The laminate of claim 1, characterized in that the force at 100% elongation of the laminate in the CD is greater than 7N.

29. 2. The laminate according to claim 1, wherein the nonwoven is a short-fiber based nonwoven, in particular a carded nonwoven, such as a spunlaced or heat-sealed carded nonwoven.

30. 2. The laminate according to claim 1, characterized in that the fixing of the at least one film to the at least one nonwoven layer is carried out by interposing an adhesive, for example a pressure sensitive adhesive, along pressure sensitive adhesive strips or lines extending longitudinally in the direction MD and spaced apart from one another in the direction CD.

31. 10. A hook laminate comprising the laminate of claim 1 and at least one wrap with hooks fixed to the laminate, in particular to the upper nonwoven layer.

32. 32. A baby diaper or adult incontinence pants comprising at least one laminate according to any one of claims 1 to 31, in particular for forming hook tabs arising laterally from the rear side of the waist of the diaper or incontinence pants, the hooks engaging with loops arising from the front side of the waist of the diaper, to achieve closure of the diaper or incontinence pants.

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