Disposable sanitary article with improved fit

Abstract

The present disclosure relates to a disposable sanitary article, which includes an absorbent core arranged between a top sheet and a back sheet, the top sheet and the back sheet providing an outer boundary region of the article surrounding the absorbent core, and the outer contour of the absorbent core is symmetrical about a longitudinal center line. The core includes a neck region, where the transverse width between left and right core edge lines is less than the transverse width of the core in front of the neck region and the transverse width behind the neck region. The article also includes at least one asymmetric wing viewed along any transverse axis, the asymmetric wing including an outer edge extending in an outward direction from the outer periphery of the absorbent sanitary article, and wherein the at least one asymmetric wing outer edge is connected to the outer periphery of the absorbent sanitary article at a wing joint line J w The outer edge of the at least one asymmetric wing includes a front wing distance point D f The distance between the rear wing and point D r , where the wing distance point is in the outer lateral direction from the joint line J w The lateral distance J1 is 3 mm, and the front wing is at a distance from point D. f A first longitudinal distance D1 of 5-30 mm is separated from the neck in the rearward longitudinal direction.

Description

Technical Field

[0001] The present invention relates to disposable sanitary articles, such as sanitary napkins, panty liners and incontinence pads, which are designed so that they assume a specific form during use to provide an improved fit and security against leakage. Background Art

[0002] Disposable sanitary articles need to have good absorbency, comfort, and need to provide the user with a sense of leak security and a good fit. Various designs and methods are used in sanitary articles so that they can conform well to the user's body contours and not move out of place during use.

[0003] However, there is still a need to further improve the fit of articles and how they conform to the user's body. Summary of the invention

[0004] It has been found that, despite prior art solutions for disposable sanitary articles, there is still a need to improve the fit of the article, particularly the way the article fits to the body of the user. There is a need for better control over how the article flexes and fits to the body, particularly in the crotch area and front of the article. For comfort and leak safety, it is important that the article deforms in a predictable manner to fit the anatomy of the user, and that the wings are positioned so as not to hinder the article from fitting to the anatomy of the user. It is also important that existing manufacturing equipment and methods can be used to manufacture the article with minimal modification.

[0005] Therefore, one of the objects of the present disclosure is to provide a disposable sanitary article having an improved fit of the article and an improvement in the way and consistency in which the article fits the user's body. In particular, the present invention aims to provide an improved fit of the front and crotch of the article. Improved leakage safety can also be expected due to the optimal positioning of the wings around the user's underwear to obtain a more forward placement of the article.

[0006] Another object of the present disclosure is to provide an article with improved comfort for the user while maintaining satisfactory absorbency or better absorbency.The disposable sanitary article may be a sanitary napkin, a panty liner, an incontinence pad or an insert with wings for folding around the crotch edge.

[0007] The above objects can be achieved by the disposable sanitary article of the present invention as defined in the appended claims. Further advantages provided by the present disclosure will be apparent to those skilled in the art from the following description of the invention.

[0008] In a first aspect of the present invention, a disposable sanitary article is provided, the disposable sanitary article having a longitudinal centerline which is transverse, longitudinal and which divides the article into a left-hand portion and a right-hand portion. The article has a front portion, a crotch portion and a rear portion, and comprises a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent core arranged between the top sheet and the back sheet. The top sheet and the back sheet extend beyond the absorbent core to provide an outer boundary region of the article around the absorbent core.

[0009] The outer contour of the absorbent core is defined by mutually symmetrical mirrored parts, which are arranged symmetrically about the longitudinal center line and defined by symmetrical left and right core edge lines. The absorbent core is also defined by a core leading edge in the front part and a core trailing edge in the rear part.

[0010] In certain embodiments, the left hand and right hand parts (comprising absorbent core, top sheet, back sheet, including wing) of disposable sanitary article are symmetrical about longitudinal center line. However, in other embodiments, absorbent core can be symmetrical about longitudinal center line, and wing can be arranged in asymmetric mode. In addition, by "mutual symmetry" and "mirror image", it can be understood that each part can be substantially symmetrical, and the small or insignificant deviation from perfect mirror image falls within the scope of the present invention.

[0011] The absorbent core includes a neck region, in which the lateral width between the left and right core edge lines is smaller than the lateral width of the core in front of the neck region and the lateral width of the core behind the neck region. The portion of the core in front of the neck region is defined as the head region of the core, and the portion of the core behind the neck is defined as the main body portion.

[0012] The shape and structure of the core can be further adjusted to optimize fit, absorbency and fluid distribution. For example, the core can be contoured so that it includes a head and two legs extending symmetrically about a centerline in the longitudinal direction of the article.

[0013] The disposable sanitary article further comprises at least one asymmetric wing as seen along any transverse axis of the disposable sanitary article. The asymmetric wing comprises an outer edge extending outwardly from the outer periphery of the disposable sanitary article, the outer edge extending at a point through the wing junction line J. w The front wing joint and the rear wing joint are connected to the outer periphery of the disposable sanitary article. The outer edge of the at least one asymmetric wing includes the front wing distance point D f The distance between the rear wing and point D r , wherein the front wing distance point is laterally outboard from the joining line J w The lateral distance J1 is 3 mm. In addition, the front wing is at a distance from point D f In the rear longitudinal direction, the first longitudinal distance D1 is between 5-30 mm, more preferably between 10-25 mm, and most preferably between 17-20 mm from the neck.

[0014] The at least one asymmetric wing may be formed with an outer edge including a wing positioning profile that coincides with a portion of the outer edge. The wing positioning profile is formed with a base line X wp and perpendicular to the baseline X wp The vertical axis Y wp The wing positioning profile is formed by a wave that starts from the front wing joint and extends outward. The wave is composed of a concave curve with a trough and a convex curve with a crest. In addition, the wing positioning profile ends at the end point of the wing positioning profile where the wave no longer coincides with the outer edge. When the wings are folded along the longitudinal side edges of the crotch, the presence of the trough provides more maneuvering space. The crest of the wing positioning profile provides a "perception of the forward direction", which is a visual cue that prompts the user to place the disposable sanitary article more forward in the underwear so that the wet point is in the best position relative to the user's anatomy. In addition, the crest of the convex curve provides an intuitive wing manipulation portion that facilitates grasping the wing.

[0015] Wing joint line J w Corresponding to the wing length, it can be between 50-110mm, preferably between 75-100mm, and most preferably between 85-95mm. Such wing length provides the best balance between the folding of the wing and the prevention of side leakage.

[0016] The presence of the neck region facilitates the shaping of the disposable sanitary article in a manner closer to the user's anatomical structure, especially in the crotch and front of the article. In particular, the presence of the neck region enhances the curvature of the front towards the user's pubic area. In this regard, the width M between the left and right core edge lines in the neck region may be between 30 and 60 mm, preferably between 32 and 42 mm, to provide an optimal folding of the disposable sanitary article.

[0017] As seen along the horizontal axis, the front wing joint width W between the front left wing and the front right wing joint fwj It may be between 75-95 mm, more preferably between 80-90 mm, and most preferably between 85-87 mm. As seen along the horizontal axis, the rear wing joint width W between the rear left wing and the rear right wing joint is rwj It can be between 85-95mm, more preferably between 87-93mm, and most preferably between 88-91mm. The above configuration allows the disposable sanitary article to optimally cover leakage in the crotch. Optionally, the back wing joining width can be greater than the front wing joining width to more closely conform to the shape of the user's underwear.

[0018] From the longitudinal direction y, the crest of the convex curve of the wing positioning profile can be located in front of the trough of the concave curve. Such a configuration further emphasizes the "forward sense of direction", thereby further promoting the forward placement of disposable sanitary products.

[0019] The base line X of the wave of the wing positioning profilewp It can be placed perpendicular to the longitudinal centerline A of the disposable sanitary article to provide optimal maneuvering space for folding the wings.

[0020] Along the baseline X wp Measure the front wing distance from point D fr The distance W2 from the peak of the convex curve of the wing positioning profile may be between 8 and 30 mm, preferably between 10 and 25 mm, and most preferably between 10 and 20 mm. wp The distance W1 measured between the front wing distance point and the end point of the wing positioning profile may be between 13-35 mm, preferably between 16-25 mm.

[0021] Along the longitudinal axis Y of the wave wp The measured height H between the trough of the concave curve and the peak of the convex curve of the wave may be between 1 and 5 mm.

[0022] The disposable sanitary article may be configured such that the wing defines an imaginary straight line N along a portion of the wing positioning profile, the imaginary straight line N starting from the trough of the concave curve and extending outward, wherein the imaginary straight line N defines an angle θ relative to a straight line w starting from the trough of the concave curve and parallel to the baseline X. wp By extension, the angle θ is between +5 and +25 degrees, preferably between +8 and +20 degrees and most preferably between +10 and +17 degrees. Alternatively, the angle θ may be between -5 and -25 degrees, preferably between -8 and -20 degrees, and most preferably between -10 and -17 degrees.

[0023] Furthermore, the wing may be formed with an outer edge defining at least one arc of a circle coinciding with a section of the outer edge and having a defined radius, the section extending between a first point on the outer edge and a second point along the outer edge where the arc no longer coincides with the outer edge, and wherein the radius is in the range of 40-500 mm. The presence of the arcuate outer edge minimises the risk of a user folding one wing over the other during use causing the adhesive on the first wing to become located on the second wing.

[0024] The outer edge may define two or more arcs of a circle, each arc defining a curvilinear segment and having a defined radius, the first radius and the second radius both being in the range of 40-500 mm.

[0025] Furthermore, the outer edge may comprise at least one straight segment. According to the present disclosure, a straight segment is defined as a segment defining a curved segment with a radius above 600 mm.

[0026] The wing can be configured to define a lower straight line along the lower edge section, wherein the lower straight line defines an angle α1 relative to a transverse axis X1 perpendicular to the longitudinal centerline A, and the magnitude of the angle α1 can be between 30-60 degrees. This enables the formation of wings with longer wing lengths, thereby minimizing the risk of leakage along the longitudinal side edges and facilitating the perception of the forward direction. In an optional embodiment, the angle α1 can be between 5-30 degrees, which allows for a more defined folding line, making it easier for the user to fold the wing of the disposable sanitary article 1 around the crotch area of ​​the underwear.

[0027] The disposable sanitary article according to the present disclosure may further comprise a second asymmetric wing as seen along any transverse axis of the disposable sanitary article, wherein the first and second asymmetric wings are asymmetric relative to each other when seen along the longitudinal centerline. By providing a disposable sanitary article with asymmetric wings as described above, the extension of the fastening wings in the transverse direction may be increased without the problem of the wings overlapping each other during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further explained below by way of non-limiting examples and with reference to the accompanying drawings, in which:

[0029] Figure 1 Schematically illustrated is a plan view of an exemplary disposable sanitary article according to the present disclosure.

[0030] Figure 2 A plan view of another exemplary disposable sanitary article according to the present disclosure is schematically shown.

[0031] Figure 3 Schematically illustrated is an enlarged view of a portion of an exemplary disposable sanitary article according to the present disclosure.

[0032] Figure 4 Schematically illustrated is an enlarged view of a portion of another exemplary disposable sanitary article according to the present disclosure.

[0033] Figure 5 Schematically illustrated is an enlarged view of a portion of another exemplary disposable sanitary article according to the present disclosure.

[0034] Figure 6 A plan view of a portion of another exemplary disposable sanitary article according to the present disclosure is schematically shown.

[0035] Figure 7 Schematically shown is an enlarged view of a wing of a disposable sanitary article according to the present disclosure.

[0036] Figure 8 Schematically illustrated is a cross-sectional view of an exemplary disposable sanitary article according to the present disclosure. DETAILED DESCRIPTION

[0037] The disposable sanitary article of the present invention is an absorbent article for personal hygiene and may be, for example, a sanitary napkin, a panty liner or an incontinence pad. Such articles are generally used to capture and store body secretions, such as urine, feces or menstrual fluid. The absorbent article is disposable, which means that it is intended to be used only once and then disposed of, rather than washed and reused. The absorbent article may suitably be a sanitary napkin, and the design of the article is particularly suitable for sanitary napkins.

[0038] Figure 1 A plan view of an article 1 according to the present disclosure is shown. Figure 1 The article 1 shown is a sanitary napkin. The article 1 has a transverse direction x, a longitudinal direction y and a longitudinal centerline A. The longitudinal centerline A divides the article into a left mirror half I and a right mirror half II, the shapes of which may be symmetrical about the longitudinal centerline A. The term "symmetrical about the longitudinal centerline A" means here that each point in the article on the first longitudinal portion I on the first side of the longitudinal centerline A has a corresponding point in the article on the second longitudinal portion II on the other side of the longitudinal centerline A; these two points are related to each other by reflection in a plane located on the longitudinal centerline A.

[0039] The article 1 comprises a front portion 2, a crotch portion 3 and a back portion 4. The article 1 comprises a liquid permeable top sheet 30, a liquid impermeable back sheet 31 and an absorbent core 6 disposed between the top sheet 30 and the back sheet 31. The surface area of ​​the top sheet 30 and the back sheet 31 extend beyond the surface area of ​​the absorbent core 6 to provide an outer boundary region 11 of the article surrounding the absorbent core 6. The outer contour of the absorbent core 6 is defined by a mirrored left core edge line 8 and a right core edge line 9, and the absorbent core 6 is defined by a core leading edge 7 in the front portion 2 and a core trailing edge 10 in the back portion 4.

[0040] The front portion 2 includes a pair of front longitudinal side edges 2A and 2B connected by a front end edge 2C. Figure 1 The front longitudinal side edges 2A and 2B in the underwear are curved and bulge outwardly relative to the longitudinal centerline A so as to follow the contour of the underwear. Alternatively, the front longitudinal side edges 2A and 2B may be substantially parallel to the longitudinal centerline. Figure 1 4. The front edge 2C of the article 1 tapers toward the apex. Similar to the front portion 2, the rear portion 4 also includes a pair of rear longitudinal side edges 4A and 4B connected by a rear end edge 4C. The rear longitudinal side edges 4A and 4B are inclined inwardly toward the crotch portion 4. The middle portion of the rear end edge 4C of the article 1 protrudes inwardly. The combination of the front edge 2C with the apex and the rear end edge 4C protruding inwardly helps the user to more easily identify the front and rear of the article 1.

[0041] like Figure 1As shown, the core 6 includes a neck region 13 having a narrowest width M (measured in the transverse direction x between the left and right core edge lines (8, 9)) that is narrower than the transverse width of the core in front of the neck region and narrower than the transverse width of the core behind the neck region measured in the transverse direction x between the first and second core edge lines (8, 9). The narrowest width M is located at the front 2 of the core 6, or at the transition 5 between the front 2 of the core and the crotch 3 of the core. The portion of the core in front of the neck region is defined as the head region 14 of the core, and the portion of the core behind the neck is defined as the main body portion 15.

[0042] The article 1 further comprises a left wing 16 and a right wing 17 extending outwardly from the longitudinal side edges (8, 9) of the periphery 18 of the disposable sanitary article 1. Figure 3 As shown, the outer edges of the left and right wings are connected to the outer periphery 18 of the disposable sanitary article 1 at the front left wing joint 19 and the front right wing joint 20 in the front part of the crotch area 3. In the rear part of the crotch area 3, the outer edges of the left and right wings 16 and 17 are connected to the outer periphery 18 of the disposable sanitary article at the rear left wing joint 21 and the rear right wing joint 22, respectively.

[0043] In the context of this application, the front wing joints 19, 20 and the rear wing joints 21, 22 are defined as follows and with reference to Figure 3 In the crotch portion 3, draw an imaginary vertical straight line Z L , Z R , so that it contacts the outer periphery 18 with the narrowest width Q in the transverse direction of the disposable sanitary article 1 in front of the left wing 16 and the right wing 17. The imaginary straight line Z in front of the left wing 16 L The intersection point between the outer periphery 18 and the front left wing joint 19 is defined as the imaginary straight line Z in front of the right wing 17. R The intersection point between the outer periphery 18 and the front right wing joint 20 is defined. L , Z R In embodiments coinciding with the longitudinal side edges of the periphery 18 (for example, because the longitudinal side edges of the periphery consist of straight lines), the front wing joints 19 and 20 are defined as being located on the imaginary straight line Z L , Z R The point on the portion of the back wing coinciding with the periphery is closest to the wing of the disposable sanitary article in the forward direction. The back wing joints 21 and 22 are drawn by an imaginary longitudinal straight line V L , V R The imaginary straight line V behind the left wing 16 is defined so that it contacts the outer periphery 18 with the narrowest width R in the transverse direction of the disposable sanitary article 1 behind the left wing 16 and the right wing 17. L The intersection point between the right wing 17 and the outer periphery 18 is defined as the rear left wing joint 21, and the imaginary straight line V RThe intersection point between the outer periphery 18 and the rear right wing joint 22 is defined as the rear right wing joint 22. L 、V R In embodiments coinciding with the longitudinal side edges of the periphery 18 (e.g., because the longitudinal side edges of the periphery consist of straight lines), the rear wing joints 21 and 22 are defined as points located on the portion of the imaginary straight line coinciding with the periphery, closest to the wings of the disposable sanitary article in the rearward direction. Figure 3 As shown, the imaginary left wing joint line J wL Connecting the front left wing joint 19 and the rear left wing joint 21, the imaginary right wing joint line J wR Connect the front right wing joint 20 and the rear right wing joint 22. In the context of this application, the left and right wing joint lines J wL and J wR Corresponding to the wing length. In sanitary napkins of the type shown, the rear wing joints 21, 22 are spaced further outboard of the longitudinal centerline than the front wing joints 19, 20. Thus, the left and right wing joint lines J wL and J wR The rear wing joints 21, 22 are not parallel to the longitudinal centerline A. However, the rear wing joints 21, 22 may also be spaced such that the lateral distance between the rear wing joints 21, 22 and the longitudinal centerline A is equal to the lateral distance between the front wing joints 19, 20 and the longitudinal centerline A. In such an embodiment, the left and right wing joint lines J wL and J wR Parallel to the longitudinal centerline A. In the sanitary napkin of the type shown, the left flap seam line J wL and right wing junction line J wR The length is 50-110 mm, preferably between 75-100 mm, most preferably between 85-95 mm.

[0044] The left wing 16 and the right wing 17 also include a front wing distance point D located on the outer edge 38 of the left wing 16 and the right wing 17. fl , D fr The distance between the rear wing and point D rl , D rr The distance between the front wing and the rear wing is the distance between the point on the outside and the wing joint line J wl The lateral distance J1 is 3 mm apart. To determine the position of the distance points of the front and rear wings, proceed as follows: wL , J wR Draw a line parallel to the wing joint line J at a distance of 3mm outside J1 wL The imaginary line K L , K R . Imaginary line K L , K R The intersection points with the outer edges 38 on the front sides of the left and right wings respectively determine the front left wing distance point D flDistance value D from the front right wing fr Similarly, the imaginary line K L , K R The intersection points with the left and right wing rear upper outer edges 38 respectively determine the rear left wing and rear right wing distance points D rl , D rr .

[0045] The presence of the neck region 13 allows the disposable sanitary article 1 to bend more easily in the neck region in the transverse direction x. Since the left and right wings 16 and 17 fix the disposable sanitary article 1 in the crotch region of the user's underwear, the front left and right wings are at a distance of 1 / 4 from the point D. fl , D fr The position relative to the neck determines the position of the neck in the user's underwear. Figure 3 As shown, the front left wing and the front right wing are at a distance of point D fl , D fr The neck region 13 of the absorbent core 6 is spaced apart from the first longitudinal distance D1 in the rearward longitudinal direction. In sanitary napkins of the type shown, the distance D1 is between 5-30 mm, more preferably between 10-20 mm. Such a configuration enables the disposable sanitary article 1 to better conform to the user's body shape in the area where the front portion 2 transitions to the crotch portion 3. In an embodiment where the neck region 13 includes straight left and right core edge lines (8, 9) so that the neck extends in the longitudinal direction, the neck region is located at a distance D1 from the point closest to the front wing in the longitudinal direction. fl , D fr Typically, the width M between the left core edge line and the right core edge line in the neck region is between 30-60 mm, preferably between 32-42 mm.

[0046] The crotch portion 3 of the article 1 is located near the front portion 2 in the longitudinal direction. In use, the crotch portion 3 is located between the user's legs and covers the genital area of ​​the female user. Figure 1 In the sanitary napkin of the type shown, the length b2 of the crotch portion 3 in the longitudinal direction accounts for 25-60% of the total length b of the article, more preferably between 30-55%, and most preferably between 30-50%. Typically, the length b2 of the crotch portion 3 in the longitudinal direction y is between 60-150 mm, for example between 80-120 mm. Figure 1 As shown, the disposable sanitary article 1 has a front wing joint width W measured in the transverse direction between the left and right front wing joints. fwj , which is between 75-95 mm, more preferably between 80-90 mm, and most preferably between 85-87 mm. The disposable sanitary article 1 also has a rear wing joint width W measured in the transverse direction between the left and right rear wing joints 21, 22. rwj , which is between 85-95 mm, more preferably between 87-93 mm, and most preferably between 88-91 mm.

[0047] Figure 1 The disposable sanitary article 1 in the embodiment comprises a left wing 16 and a right wing 17, the shapes of which are asymmetrical with respect to any transverse axis extending in the transverse direction. Figure 2 , the left wing 16 and the right wing 17 may also be formed asymmetrically relative to each other along the longitudinal center line (A). Figure 2 The left wing 16 and the right wing 17 in the disposable sanitary article are arranged symmetrically to each other along a diagonal line extending in the direction D in the plane of the sanitary article, and the angle α of the diagonal line relative to the longitudinal center line A of the disposable sanitary article 1 is in the range of 10° to 65°, for example in the range of 30° to 55°. Figure 2 As shown, the left wing 16 may be a mirror image of the right wing 17 if the left wing 16 is rotated 180°.

[0048] Figure 4 The right wing in the embodiment is formed with an outer edge 38, which includes a wing positioning profile 24 that coincides with a section of the outer edge. The wing positioning profile 24 is formed by a wave starting from the right front wing joint 20 and extending outward, the wave consisting of a concave curve with a trough 25 and a subsequent convex curve with a crest 26. The wave has a base line X wp and perpendicular to the baseline X wp The vertical axis Y wp The wing locating profile 24 terminates at a wing locating profile end point 27 where the wave no longer coincides with the outer edge 38. Figure 4 As shown, the wing positioning profile endpoint 27 is defined as the intersection of the wing outer edge 38 and a straight line w which starts from the trough of the concave curve and is parallel to the baseline X wp The concave curve and the convex curve may have the same wavelength and amplitude, or the wavelength and amplitude of the concave curve and the convex curve may be different. Figure 4 In the figure, the crest 26 of the convex curve is located in front of the trough 25 when viewed in the longitudinal direction y. fr The convex curve of the wing positioning profile is located between the peaks 26 along the baseline X wp The measured distance W2 is between 10-30 mm, preferably between 10-25 mm, and most preferably between 12-22 mm. wp Measure the front wing distance from point D fr The distance W1 from the wing positioning profile end point 27 is between 15-35 mm, preferably between 18-28 mm. Figure 4 As shown, the wing positioning profile 24 also has a longitudinal axis Y wp The height H is measured between the trough 25 of the concave curve and the peak 26 of the convex curve. In sanitary napkins of the type shown, the height H is between 1 and 5 mm.

[0049] exist Figure 5 In the embodiment, the wing 17 defines an imaginary straight line N along a portion of the wing positioning profile 24. The imaginary straight line N starts from the trough 25 of the wave and extends outward along a portion of the wing positioning profile 24, thereby starting from the trough of the concave curve and parallel to the baseline X. wp The extended straight line w defines an angle θ, the magnitude of which is between +5 and +25 degrees, preferably between +8 and +20 degrees, and most preferably between +10 and +17 degrees. Alternatively, the angle θ may have a negative value between -5 and -25 degrees, preferably between -8 and -20 degrees, and most preferably between -10 and -17 degrees.

[0050] exist Figure 5 In the figure, an imaginary straight line 40a is drawn from the rear wing to point D rr The imaginary straight line 40a extends outwardly from the rear portion 40 of the outer edge of the wing 17. The imaginary straight line 40a passes through the rear wing at a distance D rr The transverse axis X1, which is perpendicular to the longitudinal centerline A, defines an angle α1. In sanitary napkins of the type shown, the angle is between 30 and 60 degrees, thereby allowing the formation of wings with longer longitudinal side edges while promoting optimal placement of the sanitary napkin in an undergarment. In addition, the longer longitudinal side edges provide better protection against leakage along the longitudinal side edges of the disposable sanitary article 1. Figure 5 In the middle, the distance between the rear wing and point D rr The defined angle α1 and the angle θ defined by the trough 25 of the wing positioning profile are both between 30-60 degrees, which creates a perception of a forward direction. The perception of a forward direction is a visual cue to the user to place the disposable sanitary article 1 closer to the front of the underwear so that the wet point is in the best position relative to the user. However, the angle α1 can also be between 5 degrees and 30 degrees, which allows for a more defined folding line, making it easier for the user to fold the wings of the disposable sanitary article 1 around the crotch area of ​​the underwear.

[0051] Figure 6 The outer edge 38 of the middle wing 17 comprises a rounded portion 301a formed by an arc 300a of a circle having a radius ra and coinciding with the rounded portion 301a. The rounded portion 301a extends between a first point 290a of the outer edge 38 and a second point 320a along the outer edge 38 where the arc 300a no longer coincides with the outer edge 38. In sanitary napkins of the type shown, the radius ra is in the range of 40-500 mm. Figure 6 As shown, the outer edge 38 of the wing 17 may further include a second rounded portion 301b. Figure 6The second rounded portion 301b in the embodiment is formed by an arc 300b of a circle having a defined radius rb and coinciding with the rounded portion 301b. The second rounded portion 301b extends between a first point 290b of the outer edge 38 and a second point 320b at which the arc 300b no longer coincides with the outer edge 38. The radii of the first and second arcs are both within the range of 40-500 mm. Figure 7 In FIG. 3 , the outer edge 38 of the wing 17 also includes a straight line segment 36. The outer edge 38 may further include additional straight line segments.

[0052] Typically, each fastening wing (referred to as a "wing" in this disclosure) 16 and 17 is provided with at least one fastening means in the form of an adhesive area applied on the underside of each wing 16, 17, ie the side not facing the wearer.

[0053] The advantages of the present invention can be achieved with minimal disruption or modification to known manufacturing techniques. In a production method suitable for manufacturing an article according to the present invention, a liquid permeable top sheet material layer, a liquid impermeable back sheet material layer and an absorbent material layer are fed into a manufacturing apparatus. A core is arranged to be located between the top sheet material layer and the back sheet material layer. An optional acquisition material layer is arranged to be positioned between the top sheet material layer and the absorbent material layer. Figure 1 In the embodiment of the present invention, reference numeral 31 indicates a backsheet, and reference numeral 30 indicates a topsheet. Reference numeral 6 indicates an absorbent core. Suitable materials for the backsheet, topsheet 30 and absorbent core are obvious to those skilled in the art.

[0054] Disposable sanitary articles of the present disclosure include an absorbent core, which is indicated by reference numeral 6 in the accompanying drawings. An "absorbent core" is an absorbent structure of an article for obtaining and storing body fluids. The absorbent core can be of any conventional type. Examples of common absorbent materials are cellulose fluff pulp, tissue paper, highly absorbent polymers (so-called superabsorbents), absorbent foam materials, absorbent nonwoven materials, etc. It is very common to combine cellulose fluff pulp with superabsorbent polymers in the absorbent core. Superabsorbent polymers are water-swellable, water-insoluble organic or inorganic materials that can absorb at least about 20 times their own weight of an aqueous solution containing 0.9% by weight of sodium chloride. Organic materials suitable for use as superabsorbent materials can include natural materials, such as polysaccharides, polypeptides, etc., and synthetic materials, such as synthetic hydrogel polymers. Such hydrogel polymers include alkali metal salts of, for example, polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyacrylates, polyacrylamide, polyvinyl pyridine, etc. Other suitable polymers include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene-maleic anhydride copolymers and mixtures thereof. The hydrogel polymer is preferably slightly cross-linked so that the material is substantially insoluble in water. Preferred superabsorbent materials are further surface cross-linked so that the outer surface or shell of superabsorbent particles, fibers, flakes, spheres, etc. has a cross-linking density higher than that of the superabsorbent interior. Superabsorbent materials can be in any form suitable for absorbent composite materials, including particles, fibers, flakes, spheres, etc. High absorption capacity is provided by using a large amount of superabsorbent materials. Thin absorbent cores commonly found in, for example, sanitary towels, baby diapers, and incontinence protection articles typically include a compression, mixing, or layered structure of cellulose fluff pulp and superabsorbent polymers. The size and absorption capacity of the absorbent core can be varied to adapt to different product types, such as sanitary towels or panty liners for adult incontinents.

[0055] In general, the core can be a one-piece structure, thereby, for example, the manufacturing process can be simplified. The phrase "one-piece structure" in this context is intended to refer to that the absorbent core is basically composed of a type of material, which is basically the same material, or is basically the same combination of two or more materials in the whole absorbent core. The density and concentration of the material may change, but these changes are limited to the changes that can be obtained when the region that is not combined with the individual formation and then physically joined to each other. For example, when the absorbent core includes the matrix of hydrophilic fibers and superabsorbent materials as described above, the relative concentration of superabsorbent materials and fibers can be different in different parts of the core. However, the absorbent core of the one-piece structure does not include the layer or laminate of different components. Similarly, in the longitudinal, transverse or thickness direction of the absorbent core, the variation of the density or concentration of various components is acceptable, but the core should not include the region or layer of different components that are formed separately and then joined together.

[0056] A suitable technique for making the absorbent core of the present disclosure is to pad the core by an air-laid process. In this process, a breathable mold is provided. The fibrous material is air-laid into the mold, and the mold is filled, thereby producing an absorbent core with a desired amount of fibrous material.

[0057] In general, the absorbent core 6 has an asymmetrical shape in the longitudinal extension y, but the first and second longitudinal portions I, II are symmetrical about the center line A in the transverse extension x. The core 6 can have different shapes, but the circumferential edges 8, 9 of the core define a shape in which the head 14 and at least one neck area (i.e. an area with a smaller width in the transverse direction x) are located in the front 2 or transition area 5 of the core 6. In this way, the article 1 can better conform to the body shape in the area where the front 2 transitions into the crotch 3. In practice, this means that the article 1 can bend more easily in the transverse direction x in the neck area. As a result, the front 2 and the core head 14 can be bent towards the user and, therefore, the front 2 can better cover the wearer's pudendal area, while the crotch 3 can be close to the genital area of ​​the female wearer. In addition, the article 1 will stay in place better during use. In addition, refer again to Figure 2 , since the width M of the neck substantially corresponds to the distance between the two muscle tendons on the wearer's body, the absorbent article 1 can be securely fixed and maintained in position during use with the narrowest width M point or transition area 5 between the muscle tendons. Therefore, the front part 2 of the article 1 is maintained in the area in front of the above-mentioned tendons, while the crotch part 3 of the article 1 is effectively and correctly positioned on the wearer's genitals. This helps to avoid problems associated with incorrect placement of the absorbent article 1 or movement of the article 1 during wearing. In this way, the article 1 is prevented from moving backwards between the legs of the wearer. This is a common problem with traditional sanitary napkins even if the sanitary napkin is fixed to the underwear during use, because the wearer's leg movement often causes the sanitary napkin to move backwards.

[0058] Figure 8 Show Figure 1-7 A cross-sectional view of an object in . Figure 8 The cross-sectional view of FIG. 3 clearly shows the top sheet 30, the back sheet 31 and the core 6 arranged therebetween. A liquid acquisition sheet 37 is arranged between the core 6 and the top sheet 30. Preferably, the liquid acquisition sheet 37 has a large extension both in the transverse extension x and in the longitudinal extension y of the core 6. In this way, soft side edge areas can be obtained. Preferably, the liquid acquisition sheet extends about 1-15 mm beyond the outer edge of the core 6. This means that the core is completely covered by the liquid acquisition sheet. Since the liquid acquisition sheet 37 forms a quick entry for capturing liquid in the product, leakage control can be achieved. For example, at least a part of the menstrual fluid in the outer area of ​​the core is trapped so that the fluid does not leak outside the sanitary article 1. In an alternative embodiment, the liquid acquisition sheet 37 can be omitted.

[0059] The absorbent article 1 according to the present disclosure may include a liquid acquisition sheet 37 used as a liquid distribution layer. The acquisition layer 37 may have different shapes and may be modified to fit the shape of the absorbent core. The acquisition layer 37 may extend 1-15 mm beyond the outer edge of the core 6 (preferably around the entire periphery of the core 6). In some embodiments, the acquisition layer 37 may extend up to 50 mm in certain areas of the absorbent article 1. This construction may provide a neat edge at the periphery of the article. The liquid acquisition sheet 37 is located between the top sheet 30 and the core 6 and is appropriately placed on top of the absorbent core. The liquid acquisition sheet 37 is adapted to quickly receive and temporarily store the discharged liquid before the discharged liquid is absorbed by the absorbent core 6. Such an acquisition distribution layer may be composed of, for example, an air-laid nonwoven fabric, a spunlace nonwoven fabric, a high-loft nonwoven fabric or a foam material. The nonwoven material may be hydrophilic. The hydrophilic material may be obtained by adding a surfactant.

[0060] Airlaid nonwovens can be produced from fluff, wood pulp, where the fluff fibers are dispersed into a fast moving air stream and condensed onto a moving screen by pressure and vacuum. The webs can be bonded with resins dispersed in the pulp and / or thermoplastic resins. The webs can be thermally bonded (by heat), latex bonded (by adhesives) or multi-bonded (a combination of thermal and latex bonding) or mechanically bonded (high compression and high temperature, by hydrogen bonding). The grammage of the airlaid nonwoven can suitably be 50 to 100 gsm.

[0061] High bulk material is a nonwoven material and may be substantially free of absorbent fibers and superabsorbent materials. High bulk nonwoven material may include thermoplastic polymer fibers and may be selected from, but not limited to, polyesters, polyamides, and polyolefins, such as polyethylene (PE) and polypropylene (PP), and may be a mixture of any of these. High bulk material refers to a low-density fluffy fabric compared to a flat, paper-like fabric. High bulk width is characterized by a relatively low density. This means that there is a relatively high amount of void space between the fibers. The high bulk nonwoven fiber layer of the present invention may typically have a density of less than 0.200 g / cc (200 kg / m 3 ) density, especially in the range of 0.015 g / cc to 0.150 g / cc (15 kg / m 3 Up to 150kg / m 3 ), particularly in the range of 0.030 g / cc to 0.100 g / cm 3 (30 to 100kg / m 3 ), for example 0.065 g / cc (65 kg / m 3). The average density can be calculated by dividing the basis weight of the high loft layer by the thickness measured at a pressure of 0.5 kPa (see method details below). Typically, the high loft material has a thickness greater than about 0.5 mm, such as greater than 1 mm or appropriately 1.5-2.0 mm, and has a low solids content, typically less than 15% by volume. The high loft nonwoven layer can advantageously be a spunmelt nonwoven material. Spunmelt is a general term that describes the manufacture of nonwoven webs directly from thermoplastic polymers. It covers two processes and a combination of the two: spunlaid (also known as spunbond) nonwovens and meltblown nonwovens. In the spunbond process, polymer particles are melted and the molten polymer is extruded through a spinneret. The continuous filaments are cooled and deposited on a conveyor to form a uniform web. Some of the remaining temperature can cause the filaments to adhere to each other, but this cannot be considered the primary bonding method. The advantage of the spunbond process is that it imparts greater strength to the nonwoven, but the flexibility of the raw material is more limited. Coextrusion of a second component is used in several spunbond processes, usually to provide additional properties or bonding capabilities. In the meltblown web formation process, the low viscosity polymer is extruded into a high-speed gas stream when leaving the spinneret. This disperses the melt, solidifies it, and decomposes it into a fiber web. The liquid acquisition sheet can be a spunbond material, and can be a spunbond-melt-spunbond (SMS) material. The high-bulky nonwoven layer can especially have a thickness of 0.30 mm to 2.00 mm, such as 1.0 mm measured at a pressure of 0.5 kPa (according to the test method mentioned in PCT application PCT / SE2017 / 050612). The gram weight of the high-bulky material, i.e., the basis weight, can, for example, be in the range of 15 gsm to 500 gsm, particularly 30 gsm to 200 gsm, such as 30-90 gsm, for example 64 gsm.

[0062] According to another variant, the liquid acquisition sheet 37 is a hydroentangled (also known as spunbond) nonwoven material. Hydroentangled nonwoven products originate from the process of entanglement of loose fiber webs by multiple drainage jets under high pressure; this process entangles the fabric and connects the fibers to each other. There are several terms for hydroentangled nonwovens or hydroentanglement, such as air jet entanglement, needle punching, hydroentanglement or hydrodynamics, but spunlace is the most popular term in the nonwoven industry. The raw material of the acquisition sheet can be polypropylene (PP), polyethylene (PE), polyester (PET), polyamide (PA), cellulose fibers or a combination of these fibers, and different weights and components are possible, such as viscose, polyester, cotton, nylon and microfibers, of which viscose is the most commonly used raw material. Therefore, if a combination of different fibers is used, this can be a mixture of fibers from different polymers, but each fiber can also include a different polymer (for example PP / PE bicomponent fibers or PP / PE copolymers). Where appropriate, the plastic film can be composed of PE or PP, PET, PLA or amyl (or for that matter, any other thermoplastic polymer), or a mixture or copolymer of the above polymers. Spunlace materials typically include polypropylene or polyethylene fibers, which provide optimal comfort for nonwoven materials. Other suitable fibers for making nonwoven materials are, for example, natural fibers, such as bamboo, cotton and linen. The grammage of spunlace nonwoven materials can typically be 30-80 gsm.

[0063] The top sheet may include or be composed of a fibrous nonwoven layer of spunbond, meltblown, carded, spunlace, wet laid. Suitable nonwoven materials may be composed of natural fibers, such as wood pulp or cotton fibers, synthetic thermoplastic fibers, such as polyolefins, polyesters, polyamides and mixtures and combinations thereof, or a mixture of natural fibers and synthetic fibers. Materials suitable for use as top sheet materials should be soft, non-irritating to the skin, and easily penetrated by body fluids (such as menstrual fluid and urine).

[0064] Backsheet can be made of thin plastic film such as polyethylene or polypropylene film, nonwoven material coated with liquid impermeable material, hydrophobic nonwoven material that resists liquid penetration. Laminated materials of plastic film and nonwoven material can also be used. Backsheet material can be breathable, to allow steam to escape from the absorbent structure, while still preventing liquid from passing through the backsheet material.

[0065] The wings may consist of a separate material attached to the longitudinal side edges of the periphery 18 of the disposable sanitary article 1. Suitable materials may be any of the materials listed above in connection with the topsheet and the backsheet. Alternatively, the wings may consist of an extension of the topsheet or backsheet material or both.

[0066] Although not shown in the figures, the absorbent article 1 described above may include any attachment means known in the art to allow fastening to the wearer's underwear. Such means may include an adhesive coating or a friction coating on the surface of the article facing the garment. In addition, the article 1 according to the present invention includes an attachment fin ("wing") that extends in the transverse direction of the article 1 and is intended to be arranged around the crotch of the wearer's underwear. However, it is important that the nature and location of such attachment means do not significantly interfere with the function of the article 1 in use.

[0067] Therefore, the sanitary article according to the present invention can provide an adhesive, such as a pressure-sensitive adhesive, on the backsheet. The elongated packaging sheet can be releasably adhered to the backsheet with adhesive of the sanitary article. The packaging sheet can be coated with a material capable of releasing the packaging sheet, such as silicone, so that the packaging sheet can be peeled off from the backsheet with adhesive of the sanitary article, and the sanitary article can be attached to underwear. The adhesive-bearing area of ​​the backsheet can also be covered with a release paper. The release paper can be attached to the packaging sheet, for example, by permanent attachment, so that the sanitary article is attached to the packaging sheet via the release paper.

Claims

1. A disposable sanitary article (1) having a transverse direction (x), a longitudinal direction (y) and a longitudinal centerline (A), wherein the longitudinal centerline divides the article into a left-hand portion (I) and a right-hand portion (II), wherein the article has a front portion (2), a crotch portion (3) and a back portion (4), and the article comprises a liquid-permeable top sheet (30), a liquid-impermeable back sheet (31) and an absorbent core (6) arranged between the top sheet (30) and the back sheet (31); wherein the top sheet (30) and the back sheet (31) extend beyond the absorbent core (6) to provide an outer boundary region (11) of the article around the absorbent core (6); The outer contour of the absorbent core is defined by mutually symmetrical mirrored portions arranged symmetrically about the longitudinal center line (A), and is defined by a left core edge line (8) and a right core edge line (9), and the absorbent core extends between a core front edge (7) in the front portion (2) and a core rear edge (10) in the rear portion (4); The absorbent core (6) comprises a neck region (13), in which a transverse width (M) between the left core edge line (8) and the right core edge line (9) is smaller than a transverse width of the absorbent core (6) in front of the neck region (13) and a transverse width of the absorbent core (6) in rear of the neck region (13), a portion of the absorbent core in front of the neck region (13) is defined as a head region (14) of the absorbent core (6), and a portion of the absorbent core (6) in rear of the neck region (13) is defined as a main body portion (15); wherein the article further comprises a first asymmetric wing (16) and a second asymmetric wing (17), the asymmetry being seen along any transverse axis of the disposable sanitary article (1), the first asymmetric wing (16) and the second asymmetric wing (17) each comprising an outer edge (38) extending in an outward direction from the periphery (18) of the disposable sanitary article, wherein the outer edge (38) of each respective asymmetric wing is at a position extending from the periphery (18) of the disposable sanitary article via the wing joint line (J wL ,J wR ) are connected to the outer periphery (18) of the disposable sanitary article at the front wing joint part (19, 20) and the rear wing joint part (21, 22); The outer edge (38) of each of the first asymmetric wing (16) and the second asymmetric wing (17) includes a front wing distance point (D fl ,D fr ) and the rear wing distance point (D rl ,D rr ), where the front wing is at a distance from point (D fl ,D fr ) will be laterally aligned with the wing joint line (J wL ,J wR ) are separated by a lateral distance J1 of 3 mm; Each corresponding front wing distance point (D fl ,D fr ) is spaced apart from the neck region (13) by a first longitudinal distance D1 of 5-30 mm in the rearward longitudinal direction.

2. The disposable sanitary article according to claim 1, wherein: Each corresponding front wing distance point (D fl ,D fr ) is spaced a first longitudinal distance D1 of 10-25 mm from the neck region (13) in the rearward longitudinal direction.

3. The disposable sanitary article according to claim 1, wherein: Each corresponding front wing distance point (D fl ,D fr ) is spaced apart from the neck region (13) by a first longitudinal distance D1 of 17-22 mm in the rearward longitudinal direction.

4. The disposable sanitary article according to claim 1, wherein: At least one of the first asymmetric wing (16) and the second asymmetric wing (17) is formed with an outer edge (38), the outer edge including a wing locating profile (24) coinciding with a portion of the outer edge (38), wherein the wing locating profile is composed of a base line (X wp ) and perpendicular to the baseline (X wp )’s vertical axis (Y wp ), the wave starting from the front wing joint (19, 20) and extending outwardly, the wave consisting of a concave curve with a trough (25) and a convex curve with a crest (26), the wing positioning profile (24) terminating at a wing positioning profile end point (27), where the wave no longer coincides with the outer edge (38).

5. A disposable sanitary article according to any one of the preceding claims, wherein: The wing joint line (J wL ,J wR ) limits the wing length to between 50-110 mm.

6. The disposable sanitary article according to claim 5, wherein: The wing joint line (J wL ,J wR ) limits the wing length to between 75-100 mm.

7. The disposable sanitary article according to claim 5, wherein: The wing joint line (J wL ,J wR ) limits the wing length to between 85-95 mm.

8. The disposable sanitary article according to any one of claims 1 to 4, wherein: The width (M) between the left core edge line (8) and the right core edge line (9) in the neck region (13) is between 30-60 mm.

9. The disposable sanitary article according to claim 7, wherein: The width (M) between the left core edge line (8) and the right core edge line (9) in the neck region (13) is between 32-42 mm.

10. The disposable sanitary article according to any one of claims 1 to 4, wherein: The front wing joint portion includes a front left wing joint portion and a front right wing joint portion. When viewed along the transverse axis, the front wing joint width (W) between the front left wing joint portion and the front right wing joint portion is fwj ) is between 75-95mm.

11. The disposable sanitary article according to claim 10, wherein: The front wing joint width (W) between the front left wing joint and the front right wing joint as viewed along the transverse axis is fwj ) is between 80-90mm.

12. The disposable sanitary article according to claim 10, wherein: The front wing joint width (W) between the front left wing joint and the front right wing joint as viewed along the transverse axis is fwj ) is between 85-87mm.

13. The disposable sanitary article according to any one of claims 1 to 4, wherein: The rear wing joint portion includes a rear left wing joint portion and a rear right wing joint portion. When viewed along the transverse axis, the rear wing joint width (W rwj ) is between 85-95mm.

14. The disposable sanitary article according to claim 13, wherein: The rear wing joint width (W) between the rear left wing joint and the rear right wing joint as viewed along the transverse axis is rwj ) is between 87-93mm.

15. The disposable sanitary article according to claim 13, wherein: The rear wing joint width (W) between the rear left wing joint and the rear right wing joint as viewed along the transverse axis is rwj ) is between 88-91mm.

16. The disposable sanitary article according to claim 4, wherein: Viewed in the longitudinal direction (y), the peak (26) of the convex curve is located in front of the trough (25) of the concave curve.

17. The disposable sanitary article according to claim 4, wherein: The baseline of the wave (X wp ) is placed perpendicular to the longitudinal center line (A) of the disposable sanitary article (1).

18. The disposable sanitary article according to claim 4, wherein: Along the baseline (X wp ) measured from the front wing distance point (D fl ,D fr ) and the distance (W2) between the peak (26) of the convex curve of the wing positioning profile (24) is between 8-30mm.

19. The disposable sanitary article according to claim 18, wherein: Along the baseline (X wp ) measured from the front wing distance point (D fl ,D fr ) and the distance (W2) between the peak (26) of the convex curve of the wing positioning profile (24) is between 10-25mm.

20. The disposable sanitary article according to claim 18, wherein: Along the baseline (X wp ) measured from the front wing distance point (D fl ,D fr ) and the distance (W2) between the peak (26) of the convex curve of the wing positioning profile (24) is between 10-20 mm.

21. The disposable sanitary article according to claim 4, wherein: Along the baseline (X wp ) measured from the front wing distance point (D fl ,D fr ) and the distance (W1) between the end point (27) of the wing positioning profile is between 13-35 mm.

22. The disposable sanitary article according to claim 21, wherein: Along the baseline (X wp ) measured from the front wing distance point (D fl ,D fr ) and the distance (W1) between the end point (27) of the wing positioning profile is between 16-25 mm.

23. The disposable sanitary article according to claim 4, wherein: Along the longitudinal axis (Y wp ) The height (H) between the trough (25) of the concave curve of the wave and the peak (26) of the convex curve is between 1-5 mm.

24. The disposable sanitary article according to claim 4, wherein: The first asymmetric wing (16) and the second asymmetric wing (17) define an imaginary straight line (N) along a portion of the wing positioning profile (24), the imaginary straight line (N) starting from the trough (25) of the concave curve and extending outwardly, wherein the imaginary straight line (N) defines a line relative to the trough of the concave curve and parallel to the baseline (X wp ) is an angle (θ) of a straight line (w) extending from the surface of the substrate, wherein the angle is between +5 degrees and +25 degrees.

25. The disposable sanitary article according to claim 24, wherein: The angle is between +8 degrees and +20 degrees.

26. The disposable sanitary article according to claim 24, wherein: The angle is between +10 degrees and +17 degrees.

27. The disposable sanitary article according to claim 4, wherein: The first asymmetric wing (16) and the second asymmetric wing (17) define an imaginary straight line (N) along a portion of the wing positioning profile (24), the imaginary straight line extending from the front wing to a point (D fl ,D fr ) and extends outward, wherein the imaginary straight line is relative to the starting point from the trough of the concave curve and parallel to the baseline (X wp ) defines an angle (θ) that is between -5 degrees and -25 degrees.

28. The disposable sanitary article according to claim 27, wherein: The angle is between -8 degrees and -20 degrees.

29. The disposable sanitary article according to claim 27, wherein: The angle is between -10 degrees and -17 degrees.

30. The disposable sanitary article according to claim 4, wherein: The outer edge (38) of the first asymmetric wing (16) and the second asymmetric wing (17) further comprises a rounded section (301a), the rounded section being formed by an arc (300a) of a circle coinciding with the rounded section (301a) and having a defined radius (r), the rounded section extending between a first point (290) of the outer edge (38) and a second point (320) along the outer edge (38) where the arc (300a) no longer coincides with the outer edge (38), wherein the radius (r) is in the range of 40-500 mm.

31. The disposable sanitary article according to claim 4, wherein: The outer edge (38) of the first asymmetric wing (16) and the second asymmetric wing (17) further comprises two or more rounded sections (301a, 301b), wherein the rounded sections are formed by a first arc (300a) and a second arc (300b) of a circle coinciding with the rounded sections, wherein each of the first arc (300a) and the second arc (300b) has a defined first radius (ra) and a second radius (rb), wherein the first radius (ra) is in the range of 40-500 mm, and the second radius (rb) is in the range of 40-500 mm.

32. The disposable sanitary article according to claim 4, wherein: The outer edge (38) includes at least one straight line segment (36).

33. The disposable sanitary article according to claim 4, wherein: The first asymmetric wing (16) and the second asymmetric wing (17) define a lower straight line (40a) along a lower edge segment (40), wherein the lower straight line (40a) defines an angle (α1) relative to a transverse axis (X1) perpendicular to the longitudinal centerline (A), and the size of the angle is between 30-60 degrees.

34. The disposable sanitary article according to claim 4, wherein: The first asymmetric wing (16) and the second asymmetric wing (17) define a lower straight line (40a) along a lower edge segment (40), wherein the lower straight line (40a) defines an angle (α1) relative to a transverse axis (X1) perpendicular to the longitudinal centerline (A), and the size of the angle is between 5-30 degrees.

35. The disposable sanitary article according to any one of claims 1 to 4, wherein: The first asymmetric wing (16) and the second asymmetric wing (17) are asymmetric relative to each other as seen along the longitudinal centerline (A).

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