Stretch bonded laminates and method of producing machine direction stretch bonded laminates

Abstract

This invention relates to a stretch adhesive laminate and a method for producing a stretch adhesive laminate in a machine direction. A stretch adhesive laminate having an elastic membrane and at least one first nonwoven web includes a stretching direction and a transverse direction. The first nonwoven web is aggregated along the stretching direction due to the elastic relaxation of the elastic membrane. The stretch adhesive laminate further includes, in an alternating sequence along the transverse direction, a first row and a second row extending in the stretching direction. The first row includes an elongated structure extending at an angle of less than 5° relative to the transverse direction, the elongation attributed to perforations in the elastic membrane. The second row includes an adhesive region. The first and second rows are separated by line portions extending in the stretching direction, at which the first nonwoven web is positioned unattached to a continuous elastic membrane. Measured in the transverse direction, the width of the first row is greater than 1.5 times the width of the second row, and the distance between successive first rows is between 1 mm and 5 mm.

Description

Technical Field

[0001] This invention relates to a stretch adhesive laminate having an elastic membrane and at least one first nonwoven web, the stretch adhesive laminate including a stretching direction, wherein the first nonwoven web aggregates along the stretching direction due to the elastic relaxation of the elastic membrane. The stretch adhesive laminate is preferably obtained by stretching along a machine direction. Therefore, this invention also relates to a method for producing a machine-direction stretch adhesive laminate. Background Technology

[0002] Stretch-bonded laminates are particularly used in personal care products such as baby diapers and training pants. These personal care products are intended for single use. Therefore, low cost of materials and manufacturing, as well as low resource consumption, is desirable. Elastic stretch-bonded laminates can be incorporated into personal care products as elastic members in the hip area to maintain a close fit between the personal care product and the user, preferably preventing fluid contact. Furthermore, wearing comfort is essential, whereby any irritation or marks on the skin must be avoided. Therefore, it is necessary to carefully adjust the elastic properties of the laminate.

[0003] In cases of direct contact with the wearer's skin, at least one first nonwoven web can provide a soft surface for the stretch-bonded laminate even in direct contact with the skin. To achieve good mechanical properties and a pleasing appearance, an elastic membrane can be provided between the first and second nonwoven webs. For stretch-bonded laminates, it is known that the first and optionally provided second nonwoven webs aggregate due to the elastic relaxation of the elastic membrane. This elastic relaxation and aggregation of the nonwoven material result in a very soft and fluffy structure with a textile appearance.

[0004] Due to the stretch bonding, the laminate can be stretched against the elastic force of the elastic membrane until a predetermined threshold stretch rate is reached, which corresponds to the stretching of the elastic membrane during lamination. When this predetermined threshold stretch rate is reached, the first nonwoven web lies flat on the elastic membrane with its initial structure showing no deformation or only slight deformation. Typically, the threshold stretch rate, as the force required for further stretching, is noticed by the user due to the sharp increase in plastic deformation of the nonwoven material, wherein the fiber arrangement in the nonwoven material is altered and / or individual fibers are plastically stretched.

[0005] As mentioned earlier, the elastic laminate used in personal care products requires a delicate balance between the elasticity needed to hold the product in place and the pressure applied to the body. Too much elasticity and the resulting high pressure can lead to discomfort and pressure marks. Furthermore, a certain degree of breathability is necessary to prevent hydration of the underlying skin.

[0006] One inexpensive way to achieve breathability is through elastic strands between two layers of nonwoven material. This method is particularly useful for trouser-style baby diapers, such as training pants. However, fine elastic strands often leave pressure marks because the elastic force is concentrated on the narrow area of ​​contact between a single elastic strand and the skin. Additionally, the laminated strands typically cause large waviness, which increases visible volume, a disadvantage when designing for comfort in products intended for adults.

[0007] A better way to achieve breathability, thoroughness, and uniform force distribution is by perforating the elastic membrane laminate before and / or during the lamination process. This can be achieved, in particular, by ultrasonic bonding.

[0008] For example, the corresponding laminates are disclosed in US 4,842,596, EP2064052B1 and EP3251642A1.

[0009] As disclosed in WO 2012 / 036599 A1, EP 2 726 037 B1, and the aforementioned EP 3 251 642 A1, perforations can be provided on at least one side of the ultrasonic bonding point. Due to the tension of the elastic membrane during the tensile bonding process and the local melting of the membrane material at the ultrasonic bonding site, the membrane locally tears and retracts. As disclosed in the aforementioned prior art, perforations can occur only on one or both sides of each ultrasonic bonding site.

[0010] According to EP 3 689 310 A1 and WO 2019 / 065024 A1, it is also known to adjust the elastic properties of laminates by changing the adhesive pattern. Summary of the Invention

[0011] The purpose of this invention is to provide a laminate with excellent tensile properties, which is breathable while exhibiting a fabric-like appearance.

[0012] To achieve this objective, the present invention provides a stretch adhesive laminate, particularly a machine-oriented stretch adhesive laminate having an elastic membrane and at least one first nonwoven web, the laminate comprising a stretching direction and a perpendicular transverse direction, wherein the first nonwoven web aggregates along the stretching direction due to the elastic relaxation of the elastic membrane, the laminate further comprising an alternating sequence of a first row and a second row extending in the stretching direction along the transverse direction, wherein the first row comprises an elongated structure extending at an angle of less than 5° and preferably less than 3° relative to the transverse direction, the elongated structure being attributed to perforations in the elastic membrane, wherein the second row comprises an adhesive region, wherein the first row and the second row are separated by line portions extending in the stretching direction, at which the first nonwoven material is placed unattached to the uninterrupted elastic membrane, wherein the width of the first row, determined by the length of the elongated structure along the transverse direction, is greater than 1.5 times, preferably greater than 2 times, the width of the second row, determined by the size of the adhesive element along the transverse direction, wherein the distance between successive first rows corresponding to the widths of the second row and the two line portions is between 1 mm and 5 mm.

[0013] According to another aspect of the invention, a stretch-bonded laminate is provided with an elastic membrane and at least one first nonwoven web. The laminate includes a stretch direction and a transverse direction, the first nonwoven web being aggregated along the stretch direction due to the elastic relaxation of the elastic membrane, and the laminate further includes, in an alternating sequence along the transverse direction, a first row and a second row extending in the stretch direction, wherein the first row includes an elongation structure attributable to perforations in the elastic membrane, wherein the second row includes an adhesive region, wherein the first row and the second row are separated by line portions extending in the stretch direction, at which the first nonwoven web is positioned unattached to a continuous elastic membrane, wherein, measured in the transverse direction, the width of the first row is greater than 1.5 times the width of the second row, wherein in a first segment of the laminate extending in the stretch direction, the first row has a first width, and in a second segment of the laminate extending in the stretch direction, the first row has a different second width.

[0014] According to the present invention, the first row and the second row extending in the stretching direction, as well as the line portion, are configured for different purposes.

[0015] Each elongated structure is attributed to an adjacent perforation. The perforations form weakening regions, preventing the first row from significantly contributing to the elastic properties and elastic recovery of the laminate. Therefore, the elastic properties of the stretch bonded laminate can be easily manipulated by the width of the first row (i.e., the length of the elongated structure relative to the width of the line portion and the second row, respectively). Unlike laminates with elastic strands, an elastic membrane exists between the perforations in the first row, enhancing the overall stability of the laminate.

[0016] When an elongated structure is formed by ultrasonic bonding according to a preferred embodiment of the invention, the first nonwoven web is bonded to the elastic membrane at the elongated structure, thereby achieving further reinforcement of the material, wherein the fluffy portion of the nonwoven web due to elastic relaxation is confined to the area between the ultrasonically bonded portions that constitute the elongated structure.

[0017] A second row is provided for the connection between the first nonwoven web and the elastic membrane, wherein the respective adhesive regions are preferably created by ultrasonic bonding. Specifically, the elongated structure and the adhesive regions can be configured as an ultrasonic bonding pattern such that the adhesive regions somewhat resemble the elongated structure. As mentioned regarding the elongated structure, the ultrasonic bonding process can create additional perforations connecting the adhesive regions, wherein such additional perforations can occur only on one side of the adhesive region or on both sides of the adhesive region relative to the stretching direction.

[0018] However, the adhesive area of ​​the second row on one side and the elongated structure of the first row on the other side differ at least in their extension along the transverse direction. According to the invention, the width of the first row, determined by the length of the elongated structure, is greater than 1.5 times, preferably more than 2 times, the width of the second row, determined by the size of the adhesive element measured in the transverse direction. This ratio can be between 1.5 and 4, and particularly between 2 and 3.

[0019] The first and second rows are separated by lines extending in the stretching direction, at which the first nonwoven material is placed unattached to a continuous elastic membrane. At these lines, the elastic properties of the membrane are not directly affected. Therefore, these lines are necessary for the elastic recovery of the stretched adhesive laminate. Clearly, the elastic properties can be adjusted over a very wide range simply by changing the width of the lines and the first and second rows.

[0020] In principle, it is possible to provide an elongated structure forming the first row, an adhesive area forming the second row, and a continuous pattern of lines in between.

[0021] Alternatively, the width of the rows and lines can be varied in the stretching direction and / or transverse direction to provide further modification of the stretching properties. In the case of such further modification, the alignment of the stretch adhesive laminate in the final product, such as diapers or training pants, must be taken into consideration.

[0022] The stretch adhesive laminate may have a first segment extending in the stretch direction and a second segment extending in the stretch direction, wherein in the first segment, the first row has a first width, and in the second segment, the first row has a different second width.

[0023] Alternatively or additionally, segments with repeating adhesive patterns can be provided along the stretching direction. For example, the length of each segment can correspond to the length of the laminate at the diaper or training pants. As an example, the middle portion of each segment can be provided with the aforementioned first and second rows and the lines in between, wherein edges with different patterns can be provided. As an example, a connection area with lower tensile strength can be provided at the edges by omitting the elongation structure or by providing a reduced length for the elongation structure.

[0024] As mentioned above, in particular, the widths of the first and second rows, the widths of the line portions, and the ratios of these parameters are generally necessary for tensile and mechanical properties. According to the invention, the distance between successive first rows corresponding to the widths of one second row and two line portions is between 1 mm and 5 mm.

[0025] The width of the second row is preferably between 0.4 mm and 1.6 mm, particularly between 0.6 mm and 1.2 mm.

[0026] Regarding the dimensions of the laminate along the stretching direction, the elastic relaxation of the elastic membrane and the aggregation of at least the first nonwoven web must be taken into account.

[0027] Particularly in the bonded areas and elongated structures, elastic recovery is incomplete and, on a microscale, less than the average recovery of a fully stretched bonded laminate. In this context, the size of the bonded areas and elongated structures is discussed below with reference to a predetermined threshold stretch rate at which, at least on the outer side of the bonded areas and elongated structures, at least the first nonwoven web lies flat on the elastic membrane without deformation of its initial structure. A stretched bonded laminate at the predetermined threshold stretch rate essentially corresponds to the stretching of the elastic membrane during lamination. The predetermined threshold stretch rate, and therefore the stretching of the elastic membrane during lamination, is typically between 100% and 500%, particularly between 200% and 400%.

[0028] Considering ultrasonic bonding, the dimensions of the bonding area and the elongated structure essentially correspond to the bonding pattern of the ultrasonic bonding process.

[0029] Regarding the tensile state of the laminate at a predetermined threshold stretch rate, or the elastic membrane during lamination, the adhesive region preferably comprises a regular shape having substantially the same dimensions along the stretching direction and the transverse direction. This criterion is met, for example, by circles and squares with or without rounded corners.

[0030] The width of the first row can be between 1 mm and 5 mm, preferably between 1.5 mm and 3.5 mm. Regarding the adhesive pattern and the stretched laminate, the extension of the elongated structure along the stretching direction is less than the width of the first row. The extension of the adhesive area and the elongated structure can, for example, be in the range of 0.2 mm to 1 mm, preferably in the range of 0.4 mm to 0.8 mm.

[0031] The width of the line portion can be between 0.4mm and 1.6mm, preferably between 0.6mm and 1mm.

[0032] The elongated structures of the first row can be aligned along columns extending in the lateral direction, or may include offsets. With regard to the preferred alignment arrangement, the elongated structures form a periodic, particularly rectangular, pattern.

[0033] The adhesive areas of the subsequent second row can be aligned along columns extending in the lateral direction, or may include offsets. With regard to the preferred alignment arrangement, the adhesive areas form a periodic, particularly rectangular, pattern.

[0034] According to a preferred embodiment of the invention, the elongated structure and the adhesive area are aligned together along columns extending in the transverse direction. This forms a rectangular or substantially rectangular grid structure. The grid structure is characterized by good mechanical properties and an appealing appearance.

[0035] Regarding the predetermined elongation rate and the resulting adhesive pattern, the area ratio of the elongated structure to the entire laminate can be between 4% and 12%, preferably between 5.5% and 9%.

[0036] According to the invention, the first row and the second row extend along the stretching direction. Based on this feature, both rows may also partially or substantially include a directional component extending in the transverse direction, but in any case, the stretching direction is the primary direction.

[0037] Regarding the general directional component extending in the lateral direction, the row can be tilted relative to the stretching direction at an angle of less than 25°.

[0038] According to an embodiment of the invention, the first row, the second row, and the line portion extend straight in the stretching direction. The first row and the second row may be completely parallel to the stretching direction, or they may be inclined as described above, typically slightly inclined.

[0039] Alternatively, the first row, second row, and line portion extend in a wavy shape in the stretching direction, preferably with a maximum deviation angle of less than 45°. A wavy extension can be chosen, particularly for aesthetic reasons, without altering the fundamental characteristics of the invention. The straight central axis of each wavy row can be completely parallel to the stretching direction, or it can be inclined as described above, typically slightly inclined.

[0040] In particular, when stretch bonded laminates are produced as endless webs in a continuous process, the straight central axes of the first and second rows, or at least these rows, are preferably parallel to the stretching direction. This alignment may unavoidably occur during machine-directed stretch bonding using regular, repeating patterns on bonding rollers.

[0041] In addition, for the mechanical properties of the laminate, alignment of the straight central axes of the first and second rows, or at least these rows, parallel to the direction of tension is considered advantageous.

[0042] To provide a soft surface on both sides of the stretch adhesive laminate, an elastic membrane can be disposed between the first nonwoven web and the second nonwoven web.

[0043] The present invention also relates to a method for producing a machine-direction stretched adhesive laminate as described above, wherein a continuous web of an elastic film is conveyed and stretched along the machine direction, wherein the stretch ratio is between 150% and 500%, at least a first nonwoven web is conveyed along the machine direction, and the elastic film and the first nonwoven web are ultrasonically bonded while the elastic film is held in a stretched state to bond a patterned laminate, the bonded pattern comprising a first row and a second row extending in the machine direction in an alternating sequence perpendicular to the machine direction along the transverse direction, the first row comprising a section at less than 5° relative to the transverse direction, preferably less than 5°. An elongated structure extending at an angle of 3°, due to the stretching and ultrasonic bonding of the elastic membrane, forms at least one perforation in the elastic membrane adjacent to each elongated structure, and forms at least one perforation in the elastic membrane for each elongated structure, wherein the second row includes an adhesive region, wherein the first row and the second row are separated by a line portion extending in the machine direction, at which a first nonwoven material is placed unattached to the uninterrupted elastic membrane, and the width of the first row is greater than 1.5 times the width of the second row when measured in the transverse direction, and the distance between successive first rows is between 1 mm and 5 mm.

[0044] For another embodiment of the method, refer to the description of the stretch adhesive laminate, wherein the machine direction corresponds to the stretching direction and the transverse direction corresponds to the transverse direction.

[0045] Elastic films are typically extruded or co-extruded and comprise thermoplastic elastomers. As thermoplastic polymers, styrene block copolymers (SBCs) such as SIS, SBS, SEBS, and SEPS, or preferably olefin-based elastic polymers (TPE-O), are provided, wherein the thermoplastic polymer may optionally be blended with a non-elastic polymer. For example, the olefin-based elastic polymer may be blended with PP or PE. Additionally, mixtures of SBCs and TPE-O with or without blends of non-elastic polymers are also suitable. Furthermore, process aids, chemical stabilizers, or other additives may be provided.

[0046] According to a preferred embodiment, the elastic film is provided as a co-extruded film having an elastic core and a non-sticky surface layer. The preferred non-sticky surface layer may be based on polypropylene with anti-blocking additives or mineral fillers such as talc or CaCO3. The polypropylene may be provided as a homopolymer or copolymer. Furthermore, mixtures of PE and PP are particularly suitable for the non-sticky surface layer.

[0047] Regarding the relaxed state, the thickness of the elastic membrane can be, for example, between 10 μm and 70 μm, particularly between 15 μm and 50 μm.

[0048] The first nonwoven web and the optionally provided second nonwoven web can be implemented as a single-layer or multi-layer structure. In particular, spunbond nonwoven materials, carded nonwoven materials, and spunlace nonwoven materials are suitable for the first and second nonwoven webs or at least one layer of the first and second nonwoven webs. The nonwoven material is preferably based on polypropylene.

[0049] To achieve a very pleasantly soft touch, highly flexible spunbond nonwoven materials with low internal adhesion are known. In practice, nonwoven webs with different layers are often used, such as, for example, a combination of spunbond and meltblown layers or a combination of spunbond and carded layers.

[0050] Alternatively, the nonwoven material may also comprise bicomponent fibers having symmetrical or asymmetrical arrangements of two polymer components. Regarding the combination of fibers with a sheet-core structure and a co-extruded elastic film including a non-adhesive surface layer, the materials of the fiber sheet and the non-adhesive surface layer can be matched to allow for reliable and robust adhesion. Therefore, the same polymer or polymer groups can be provided for both the fiber sheet and the non-adhesive surface layer. Regarding the fiber sheet-core structure, it is preferred that the melting temperature of the sheet is lower than that of the core.

[0051] In principle, other polymer fibers or natural fibers can also be used, at least as blends, in nonwoven materials. Fiber blends can be provided to modify the properties of nonwoven materials, such as visual appeal, surface feel, or affinity for water.

[0052] Regarding the total cost of stretch bonded laminates, a relatively low mass per unit area is preferred. For providing nonwoven materials for lamination (i.e., before aggregation due to elastic relaxation), the areal weight of the nonwoven material can be as low as 7 g / m². 2 Up to 30g / m 2 Between, preferably between 10 g / m 2 Up to 22g / m 2 .

[0053] The present invention also relates to an absorbent article comprising a matrix structure including a top sheet, a bottom sheet, and an absorbent core disposed between the top sheet and the bottom sheet, and the absorbent article further comprising a stretch adhesive laminate as described above as an elastic band. Attached Figure Description

[0054] The present invention will now be described with reference to the exemplary accompanying drawings:

[0055] Figure 1 It refers to the arrangement of the adhesive laminate stretched in the direction of the production machine;

[0056] Figure 2 It is an ultrasonic bonding pattern of a tensile bonded laminate;

[0057] Figure 3 This is a schematic diagram of a tensile adhesive laminate in a stretched state;

[0058] Figure 4 It is a cross-sectional view of a laminate in a relaxed state;

[0059] Figure 5 yes Figure 2 Alternative embodiments of the adhesive pattern shown;

[0060] Figure 6 These are baby training pants with a stretch adhesive laminate in the hip area;

[0061] Figure 7 yes Figure 1 Another alternative embodiment of the adhesive pattern shown. Detailed Implementation

[0062] Figure 1 The production of a stretch bonded laminate with stretch adhesion in the machine direction MD is illustrated in a general manner. With respect to a particular embodiment, the machine direction MD corresponds to the stretching direction of the laminate, and the transverse direction CD corresponds to the transverse direction of the laminate.

[0063] according to Figure 1An elastic membrane 1 is provided on a first roller 2. The elastic membrane 1 travels along the machine direction to the roll gap 3 of the roller arrangement. At the roll gap 3, the elastic membrane 1 is combined with a first nonwoven web 4 and a second nonwoven web 5 provided from separate rollers 6.

[0064] When the circumferential speed of the roller arrangement forming the nip 3 is higher than the circumferential speed of the first roller 2, the elastic membrane 1 is stretched along the machine direction MD. Unlike the first roller 2, separate rollers 6 providing the first nonwoven web 4 and the second nonwoven web 5 rotate at substantially the same circumferential speed as the roller arrangement forming the nip 3.

[0065] The stretching ratio of the elastic membrane 1 corresponds to the ratio of the circumferential speed of the first roller 2 to the circumferential speed of the rollers arranged at the roller gap 3.

[0066] Following the roll gap 3, an ultrasonic bonding station comprising an acoustic electrode 7 and an anvil roller 8 is installed. The elastic membrane 1 remains stretched as the anvil roller 8 rotates at nearly the same circumferential speed as the roller at the roll gap 3. The stretch rate is typically between 150% and 500%.

[0067] The machine-stretched adhesive laminate can be directly processed or rolled up for subsequent processing.

[0068] When the tension is released, the first nonwoven web 4 and the second nonwoven web 5 aggregate due to the elastic relaxation of the elastic membrane 1.

[0069] Figure 2 The adhesive pattern provided by the anvil roller 8 is shown.

[0070] because Figure 2 The adhesive pattern shown comprises a first row 9 of structures 10 that extend in the transverse direction (corresponding to the transverse direction CD) in an alternating sequence along the transverse direction (corresponding to the transverse direction CD). The stretch adhesive laminate also includes a second row 11 having adhesive regions 12.

[0071] The first row 9 and the second row 11 are separated by a line portion 13 extending in the stretching direction. After the ultrasonic bonding process, the first nonwoven web 4 and the second nonwoven web 5 are placed at the line portion 13 as if not connected to the uninterrupted elastic membrane 1.

[0072] According to the specific embodiment shown, the width of the first row 9 is approximately 2 mm, while the width of the second row is approximately 0.8 mm. With the width of the line portion 13 being 0.8 mm, the distance between successive first rows (measured edge to edge) is approximately 2.4 mm.

[0073] Regarding the illustrated embodiment, the elongated structure 10 and the adhesive region 12 are aligned along columns extending in the transverse direction. The distance between the columns is approximately 2.5 mm (measured edge-to-edge).

[0074] Figure 3 The structure of the elastic membrane after an ultrasonic bonding process in a stretched state is shown in a simplified manner. At the bonding region 12 and the elongated structure 10, a first nonwoven web 4 and a second nonwoven web 5 are bonded to the elastic membrane 1. Due to the elasticity of the stretched elastic membrane 1 and the melting of the elastic membrane 1 at the location of the elongated structure 10, the elastic membrane 1 retracts near the elongated structure 10, thereby forming a perforation 14. Alternatively, the perforation 14 can occur on both sides of each elongated structure 10.

[0075] Another perforation 15 is formed near the adhesive area 12.

[0076] consider Figure 3 It is clear that the elastic properties of the machine-directed tensile adhesive laminate are essentially provided by these lines 13 between the first row 9 and the second row 11.

[0077] Figure 4 A cross-sectional view of the first row 9 of the machine-stretched adhesive laminate in a relaxed state is shown. Due to the elastic relaxation of the elastic membrane 1, the first nonwoven web 4 and the second nonwoven web 5 aggregate along the stretching direction, resulting in a soft, fabric-like appearance. Unlike laminates that include stretched adhesive elastic strands, the bulkiness of the first nonwoven web 4 and the second nonwoven web 5 is limited to an advantageous degree. Furthermore, good structural stability of the fully stretched adhesive laminate is achieved relative to the stretching direction, particularly relative to the transverse direction.

[0078] In principle, Figure 2 The adhesive pattern shown can be modified in segments along the transverse direction or along the stretching direction. As an example, Figure 5 A modified adhesive pattern is shown, having a first segment A extending in the tensile direction and a second segment B extending in the tensile direction. In the first segment, a first row 9 has a first width, and in the second segment, the first row has a different, larger second width. The tensile properties can be easily changed simply by altering the width of the first row 9. The elastic force at the second segment B is lower than that at the first segment A because the larger width of the elongated structure 10 in the second segment B weakens the reinforcement of the elastic membrane 1.

[0079] Figure 6 Training pants with a machine-directed stretch adhesive laminate extending around the hip area are shown. To provide different tensions at the top and bottom of the training pants, the following settings can be configured: Figure 5 The different segments A and B are shown.

[0080] Figure 7An alternative adhesive pattern is shown, wherein the first row 9, the second row 11, and the line portion 13 extend in a wavy shape in the stretching direction. This alternative embodiment is essentially configured for aesthetic reasons without altering the fundamental characteristics of the invention.

Claims

1. A stretch adhesive laminate having an elastic membrane (1) and at least one first nonwoven web (4), the stretch adhesive laminate including a stretch direction and a transverse direction, the first nonwoven web (4) being aggregated along the stretch direction due to the elastic relaxation of the elastic membrane (1), the stretch adhesive laminate further including a first row (9) and a second row (11) extending in the stretch direction in an alternating sequence along the transverse direction. in, The first row (9) includes an elongation structure (10) extending at an angle of less than 5° relative to the transverse direction, wherein the elongation structure (10) is implemented as an adhesive line having an adjacent perforation (14) of an elastic membrane (1) on at least one side. The second row (11) includes the adhesive area (12). The first row (9) and the second row (11) are separated by a line portion (13) extending in the stretching direction, at which the first nonwoven web (4) is placed unattached to the continuous elastic membrane (1). In the horizontal direction, the width of the first row (9) is 1.5 times greater than the width of the second row (11). The distance between the first row (9) is between 1 mm and 5 mm.

2. The tensile adhesive laminate according to claim 1, wherein, The elongated structure (10) and the adhesive area (12) are aligned along the columns that extend in the transverse direction.

3. The tensile adhesive laminate according to claim 1, wherein, The first row (9), the second row (11), and the line section (13) extend straight in the stretching direction.

4. The tensile adhesive laminate according to claim 1, wherein, The first row (9), the second row (11) and the line section (13) extend in a wavy shape in the stretching direction, wherein the maximum deviation angle is less than 45°.

5. The tensile adhesive laminate according to claim 1, wherein, An elastic membrane (1) is disposed between the first nonwoven web (4) and the second nonwoven web (5).

6. The tensile adhesive laminate according to claim 1, wherein, At a predetermined threshold stretch rate, the first nonwoven web (4) lies flat on the elastic membrane (1) without deformation of its initial structure.

7. The tensile adhesive laminate according to claim 6, wherein, The predetermined threshold elongation corresponds to an elongation of 100% to 500%.

8. The tensile adhesive laminate according to claim 6 or 7, wherein, Regarding the predetermined threshold elongation rate, the area ratio of the elongated structure (10) is between 12% and 4%.

9. The tensile adhesive laminate according to claim 1, wherein, The width of the line part (13) is between 0.4 mm and 1.6 mm.

10. The tensile adhesive laminate according to claim 1, wherein, The width of the first row (9) is between 1 mm and 5 mm.

11. The tensile adhesive laminate according to claim 1, wherein, The width of the second row (11) is between 0.4 mm and 1.6 mm.

12. The tensile adhesive laminate according to claim 1, wherein, Additional perforations (15) are set adjacent to the adhesive area.

13. The tensile adhesive laminate according to claim 1, wherein, In the first segment (A) of the laminate extending in the tensile direction, the first row (9) has a first width, and in the second segment (B) of the laminate extending in the tensile direction, the first row (9) has a different second width.

14. The stretch adhesive laminate according to claim 1, wherein the stretch adhesive laminate includes a first segment along the stretching direction, the first segment having a first row (9), a second row (11), and a line portion (13) located therebetween, wherein, At the second segment, the elongation structure (10) and / or adhesive area (12) are omitted and / or set in a different pattern.

15. A stretch adhesive laminate having an elastic membrane (1) and at least one first nonwoven web (4), the stretch adhesive laminate including a stretch direction and a transverse direction, the first nonwoven web (4) being aggregated along the stretch direction due to the elastic relaxation of the elastic membrane (1), the stretch adhesive laminate further including a first row (9) and a second row (11) extending in the stretch direction in an alternating sequence along the transverse direction. in, The first row (9) includes an elongation structure (10), wherein the elongation structure (10) is implemented as an adhesive line having an adjacent perforation (14) of an elastic membrane (1) on at least one side. The second row (11) includes the adhesive area (12). The first row (9) and the second row (11) are separated by a line portion (13) extending in the stretching direction, at which the first nonwoven web (4) is placed unattached to the continuous elastic membrane (1). In the horizontal direction, the width of the first row (9) is 1.5 times greater than the width of the second row (11). In the first segment (A) of the laminate extending in the tensile direction, the first row (9) has a first width, and in the second segment (B) of the laminate extending in the tensile direction, the first row (9) has a different second width.

16. A method for producing a machine-direction stretch adhesive laminate, wherein the stretch adhesive laminate is a stretch adhesive laminate according to any one of claims 1 to 15, wherein a. A continuous web of elastic film (1) is conveyed and stretched along the machine direction (MD), wherein, The draw ratio is between 100% and 500%. b. Feed at least the first nonwoven web (4) along the machine direction (MD). c. With the elastic membrane (1) held in a stretched state, the elastic membrane (1) and the first nonwoven web (4) are ultrasonically bonded to bond the patterned laminate. d. The adhesive pattern includes a first row (9) and a second row (11) extending in the machine direction (MD) in an alternating sequence perpendicular to the machine direction (MD) and along the transverse direction (CD). e. The first row (9) includes an elongation structure (10) that extends at an angle of less than 5° relative to the lateral direction (CD). f. Due to the stretching and ultrasonic bonding of the elastic membrane (1), at least one perforation (14) is formed in the elastic membrane (1) adjacent to each elongated structure (10). g. The second row (11) includes the adhesive area (12). h. The first row (9) and the second row (11) are separated by a line portion (13) extending in the machine direction (MD), at which the first nonwoven web (4) is placed unattached to the continuous elastic membrane (1). i. Measured in the horizontal direction (CD), the width of the first row (9) is more than 1.5 times the width of the second row (11). j. The distance between the first row (9) is between 1 mm and 5 mm.

17. An absorbent article comprising a substrate structure including a top sheet, a bottom sheet, and an absorbent core disposed between the top sheet and the bottom sheet, and the absorbent article further comprising a stretch adhesive laminate according to any one of claims 1 to 15 as an elastic band fixed to the substrate structure.

18. The absorbent article according to claim 17, wherein, The elastic band is essentially fixed across the entire overlapping surface of the tape and the film.

19. The absorbent article according to claim 17, wherein, The elastic band is fixed on a portion of the area less than 80% of the overlap between the band and the film.

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