Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020117108 - ARTICLE D'HYGIÈNE JETABLE À AJUSTEMENT AMÉLIORÉ

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1 . Disposable hygiene article (1) having a transverse direction (x), a longitudinal direction (y) and a longitudinal centre line (A) dividing the article into left-hand and right-hand portions (I) and (II), whereby said article (1 ) has a front portion (2), a crotch portion (3) and a rear portion (4), and said article (1) comprises a liquid-permeable topsheet (30), a liquid-impermeable backsheet (31), an absorbent core (6) arranged between the topsheet (30) and backsheet (31), wherein an outer contour of the absorbent core (6) is defined by mutually symmetrical mirror-imaged portions arranged symmetrically about the centerline (A), and defined by first and second core edge lines (8; 9), and the core (6) is delimited by a core front edge (7) in the front portion (2) and a core rear edge (57) in the rear portion (4), whereby said absorbent core (6) comprises a first region (12) extending in the longitudinal direction (y) of the article (1) from a first region front edge (67) in the front portion (2) over the crotch portion (3) to the rear portion (4), and wherein the outer contour of the first region (12) is defined by mirror-imaged first and second first region edge lines (22, 23), and whereby said first region (12) comprises a head part (13) and two leg portions (15, 16) extending symmetrically about the centre line (A) and in a longitudinal direction (y) of the article (1 ), starting and diverging from a common leg portion start point (ao) in the crotch portion (3) and extending over a portion of the crotch portion (3) towards separate leg portion endings (17, 18) in the rear portion (4), whereby a distance (ax) between facing sides (19, 20) of the respective leg portions (15, 16) in the transverse direction (x) varies in the longitudinal direction (y), whereby a maximum distance (ai) between the facing sides (19, 20) of the respective leg portions (15, 16) in the transverse direction (x) is in the crotch portion (3), located at a position in the longitudinal direction (y) corresponding to a position of a crotch point (21), whereby said facing sides (19, 20) of the respective leg portions (15, 16) converge backwards in the longitudinal direction (y) such that said distance (ax) is reduced from said maximum distance (ai) to a minimum distance {ai), whereby said absorbent core (6) further comprises a second region (24) at least partially surrounded by said first region (12) and extending between said leg portions (15, 16) in the transverse direction (x) and in the length direction (y) from the leg portion start point (ao) in the crotch portion (3) to an endpoint (a) in the rear portion (4), and wherein:

the second region (24) has an average density which is at least 20%, preferably at least 30% and most preferably at least 50% lower than the average density of the first region (12),

the absorbent core (6) comprises a first left rear compression line (L1) and a first right rear compression line (R1), wherein the first left and right rear compression lines mutually diverge and curve away from the longitudinal centre line (A) in a forward direction, the first and second compression lines (L1 , R1 ) being mutually symmetric about the longitudinal centerline (A),

wherein the first left rear compression line (L1) comprises a curve extending from a front endpoint (PFu) located at or adjacent to a transversally outer left edge (8) of the

first leg portion (15) to a rear endpoint (PRu) located at or adjacent to an inner right edge (19) of the first leg portion (15), and

wherein the first right rear compression line (R1) comprises a curve extending from a front endpoint (PFFM) located at or adjacent to a transversally outer right edge (9) of the second leg portion (16) to a rear endpoint (PRFM) located at or adjacent to an inner left edge (20) of the second leg portion (16),

wherein a distance G3 is defined in the transverse direction (x) between opposing mirror image-points on the first pair of rear compression lines (L1 , R1), and wherein the distance G3 increases in a forward direction from a minimum distance G3min between the rear endpoints of the first pair compression lines (L1 , R1) to a maximum distance G3max between the front endpoints of the first pair of compression lines (L1 , R1),

and wherein the distance (G3min) is a minimum distance between the left and right compression lines (L1 , R1).

2. Disposable hygiene article (1) according to claim 1 , wherein the first region (12) has its

narrowest width (M) in the transverse direction (x) in the front portion (2) or at the location of a transition (5) between the front portion (2) and the crotch portion (3).

3. Disposable hygiene article (1) according to any preceding claim, wherein a boundary is

defined between the first region (12) and the second region (24) of the core (6) between the first and second leg portions (15, 16), to form:

a first boundary line (19’) between an inner edge of the first leg (15) and the second region (24); and

a second boundary line (20’) between an inner edge of the second leg (16) and the second region (24), and

wherein the first boundary line (19’) forms a tangential extension of the left curved compression line (L1) at its rear endpoint (PRu)and wherein the second boundary line (20’) forms a tangential extension of the right curved compression line (R1) at its rear endpoint (PRRI).

4. Disposable hygiene article (1) according to any preceding claim, wherein each of the first left and right compression lines (L1 , R1) comprises a smooth curve.

5. Disposable hygiene article (1) according to any preceding claim, wherein the first left and right compression lines (L1 , R1) are continuously and increasingly divergent as they extend in the forward direction.

6. Disposable hygiene article (1) according to any preceding claim, wherein the distance G3min is between 5 -20mm

7. Disposable hygiene article (1) according to any of the preceding claims, wherein the first left and right rear compression lines (L1 , R1) are obtained by means of groove compressing the core (6) and optionally the acquisition sheet (36) and/or the topsheet (30) with high pressure compression from the topsheet (30) side of the article (1).

8. Disposable hygiene article (1) according to any of the preceding claims, further comprising first (101) and second (102) front compression lines, said first and second front compression lines (101 , 102) being symmetrically arranged either side of the centre line (A).

9. Disposable hygiene article (1) according to any of the preceding claims, wherein the first front compression line (101) extends from a front endpoint (PFi) to a rear endpoint (PRi) via a first turning point, and wherein:

the front endpoint (PFi) of the first front compression lines (101) is located at or adjacent to an outer edge region (8) of the first region (12) of the absorbent core (6) left of the longitudinal centre line (A) and forward of the narrowest width (M),

the rear endpoint (PRi) of the first front compression line (101) is located at or adjacent to an outer edge region of the first region (12) of the absorbent core (6) left of the centre line (A) and behind the narrowest width (M),

the first turning point (T1) is located left of the centre line (A) and right of the front and rear endpoints of the first front compression line (101) in the transverse direction (x), and between the front and rear endpoints of the first front compression lines (101) in the longitudinal direction (y),

wherein the second front compression line (102) extends from a front endpoint (PF2) to a rear endpoint (PR2) via a second turning point, and wherein:

the front endpoint (PF2) of the second front compression lines (102) is located at or adjacent to an outer edge region (9) of the first region (12) of the absorbent core (6) right of the longitudinal centre line (A) and forward of the narrowest width (M), the rear endpoint (PR2) is located at or adjacent to an outer edge region (9) of the first region (12) of the absorbent core (6) right of the centre line (A) and behind the narrowest portion (M),

the second turning point (T2) is located right of the centre line (A) and left of the front and rear endpoints of the second front compression line (102) in the transverse direction (x), and between the front and rear endpoints of the second front compression line (102) in the longitudinal direction (y).

10. Disposable hygiene article (1) according to claim 9, wherein the first front compression line (101) and the second front compression line (102) are spaced from each other by a minimum distance D1 between their respective turning points (T1 , T2), and wherein the distance D1 is at least 1 mm in a transverse direction.

1 1 . Disposable hygiene article (1) according to any one of the preceding claims, wherein the second region (24) comprises a centre region (25) extending symmetrically about the centre line (A) and having a longer extension in the longitudinal direction (y) than in the transverse direction (x), and a longitudinally and symmetrically about the centre line (A) extending rear section (38) in contact with the centre region (25), and the centre region (25) and the rear section (38) being limited by the facing sides (19, 20) of the respective leg portions (15, 16).

12. Disposable hygiene article (1 ) according to claim 1 1 , wherein the centre region (25) comprises a weakening compression line extending along the centre line (A) between a start point (ao) and a centre region endpoint (ae).

13. Disposable hygiene article (1) according to claim 1 1 or 12, wherein a maximum width (ai) of the centre region (25) is 10-50 mm and a length is from 50-1 10 mm, and the minimum width (aå) of a rear section (38) limited by the facing sides (19, 20) of the respective leg portions (15, 16) is 5-30 mm and a length is from 30-1 10 mm.

14. Disposable hygiene article (1) according to any of the preceding claims 1 1 to 13, wherein the centre region (25) extends in a thickness direction of the article such that it protrudes outwards from a plane of the first region (12).

15. Disposable hygiene article (1) according to any of the preceding claims, wherein the first region (12) of the core (6) has an average density of an absorbent material from 150-220 kg/m3, preferably from 160-210 kg/m3, and the second region (24) has an average density of an absorbent material from 70-150 kg/m3, preferably from 80-130 kg/m3.

16. Disposable hygiene article (1) according to any of the preceding claims, further comprising a second pair of rear compression lines (L2, R2), wherein the second pair of rear compression lines comprises a second left compression line (L2) and a second right compression lines (R2), and wherein:

the second left rear compression line (L2) extends from a front endpoint (PFL2) located at or adjacent to a transversally outer left edge (8) of the first leg portion (15) to a rear endpoint (PRL2) located at or adjacent to an inner right edge (19’) of the first leg portion (15), and

the second right rear compression line (R2) extends from a front endpoint (PFRå) located at or adjacent to a transversally right edge (9) of the second leg portion (16) to a rear endpoint (PRRå) located at or adjacent to an inner left edge (20’) of the second leg portion (16).

17. Disposable hygiene article (1) according to claim 16, wherein a distance G4 is defined in the transverse direction (x) between opposing mirror-image points on the second pair of rear

compression lines (L2, R2), and wherein the G4 increases from a minimum distance G4min between the rear endpoints of the second pair of compression lines (L2, R2) to a maximum distance G4max between front endpoints of the second pair of compression lines (L2, R2).

18. Disposable hygiene article (1) according to claim 16 or claim 17, wherein each of the

compression lines of the second pair of rear compression lines (L2, R2) is curved.

19. Disposable hygiene article (1) according to claim 16, 17 or 18, wherein each of the

compression lines of the second pair of rear compression lines (L2. R2) is straight.

20. Disposable hygiene article (1) according to claim 18, wherein the first and second left rear compression lines (L1 , L2) are parallel, and wherein the first and second right rear compression lines (R1 , R2) are parallel.

21. Disposable hygiene article (1) according to claim 9 or any claim dependent thereupon,

wherein the point of minimum width D1 between the front compression lines and the point of minimum width (G3min) between the first pair of rear compression lines (L1 , R1) are spaced apart from each other in a longitudinal direction by a distance G8, wherein the distance G8 is between 80-200mm more preferably between 100-190mm.

22. Disposable hygiene article (1) according to claim 9 or any claim dependent thereupon,

wherein the point of minimum distance D1 between the first and second front compression lines (101 , 102) is spaced from the narrowest width (M) of the core (6) by 0-15mm, more preferably between 5-10mm, and preferably with the minimum distance D1 located forward of the narrowest width (M).

23. Disposable hygiene article (1) according to any preceding claim, wherein a longitudinal

distance G1 between the respective front and rear endpoints of the first left and right rear compression lines (L1 , R1) is between 15-80mm, more preferably between 20-70mm.

24. Disposable hygiene article (1) according to any one of the preceding claims, wherein the higher average density of the absorbent material is obtained by means of compression and/or providing an embossing pattern to the first region (12) which covers at least portion of the first region (12), and wherein the second region (24) is free of the embossing pattern.

25. Disposable hygiene article (1) according to claim 24, wherein said first region (12) is

compressed more than the second region (24), and the first region (12) is stiffer than the second region (24).

26. The disposable hygiene article of claim 24, wherein the embossing pattern comprises

individual dots placed in a predetermined pattern.

27. Disposable hygiene article (1) according to any one of the preceding claims, wherein the narrowest width (M) of the first region (12) of the core (6) in said front portion (2) is from 15 to 60 mm in the transverse direction (x).

28. Disposable hygiene article (1) according to any one of the preceding claims, wherein the second region (24) covers from 10-50% of a total area of the core (6).

29. Method for the manufacture of the disposable article (1) according to any of claims 1 to 28, comprising the steps of:

feeding a liquid-permeable topsheet material layer (30), a liquid-impermeable backsheet (31) material layer and an absorbent material layer (6) arranged to be positioned in between the topsheet material layer (30) and the backsheet material layer (31),

- forming the first region (12) and second region (24) of the core (6) by compressing the first region (12) more than the second region (24) and/or by embossing an embossing pattern to areas providing the first region (12) in the core (6), and

- forming the first left rear compression line (L1) and the first right rear compression line (R1), by means of high pressure compression from the topsheet (30) side of the core (6).

30. Method according to claim 29, further comprising the step of providing a weakening compression line (250) extending along the centre line (A) between a start point (ao) and a centre region endpoint (ae).

31 . Method according to any of claims 29-30, wherein the method further comprises providing a liquid acquisition sheet (36) between the topsheet material layer (30) and the absorbent material layer.

32. Method according to any of claims 29-31 , wherein the first region (12) is formed prior to marriage of the backsheet to the absorbent core, topsheet and optional liquid acquisition sheet of the article.