SANITARY ARTICLE WITH EMBOSSED FUNCTIONAL DESIGN ELEMENTS
20240016670 · 2024-01-18
Inventors
Cpc classification
A61F13/4756
HUMAN NECESSITIES
A61F13/84
HUMAN NECESSITIES
A61F13/5616
HUMAN NECESSITIES
International classification
Abstract
Disclosed is a sanitary article including a topsheet, backsheet and absorbent core, the sanitary article having an extension in longitudinal and transverse directions, the sanitary article having first and second longitudinal edges extending in the longitudinal direction and front and rear transverse edges extending in the transverse direction, the sanitary article being divided in a front portion, crotch portion and a rear portion, the absorbent core including a head portion, body portion and neck portion forming a transitional region between the head portion and the body portion, the head portion being positioned in the front portion and the body portion being positioned in the crotch portion and rear portion, wherein a transverse width at the neck region is smaller than a maximum transverse width of the absorbent core in the head portion and the body portion, wherein the absorbent core comprises three individual and separate embossed functional design elements.
Claims
1. A sanitary article, such as a sanitary napkin or a pantiliner, the sanitary article comprising a topsheet, a backsheet and an absorbent core arranged between the topsheet and the backsheet, the sanitary article having an extension in a longitudinal direction and in a transverse direction, the sanitary article having first and second longitudinal side edges extending in the longitudinal direction and front and rear transverse side edges extending in the transverse direction, the sanitary article made up of a front portion, a crotch portion and a rear portion, as seen in the longitudinal direction, the absorbent core comprising a head portion, a body portion and a neck portion, the neck portion forming a transitional region between the head portion and the body portion, the head portion being positioned in the front portion of the sanitary article and the body portion being positioned in the crotch portion and in the rear portion of the sanitary article, wherein a transverse width of the absorbent core at the neck region is smaller than a maximum transverse width of the absorbent core in the head portion and in the body portion, wherein the absorbent core comprises three individual and separate embossed functional design elements, an embossed front functional design element being arranged in the front portion of the sanitary article, an embossed crotch functional design element being arranged in the crotch portion of the sanitary article and an embossed rear functional design element being arranged in the rear portion of the sanitary article, each of the embossed functional design elements having a boundary comprising continuous or discontinuous line(s) delimiting a respective inner region of the embossed functional design elements and wherein each of the embossed front, crotch and rear functional design elements is different from one another.
2. The sanitary article according to claim 1, wherein each of the front, the crotch and the rear functional design elements is different from one another in shape and/or size.
3. The sanitary article according to claim 1, wherein the sanitary article has a first fastening wing extending along the first longitudinal side edge between a first front wing junction and a first rear wing junction and a second fastening wing extending along the second longitudinal side edge between a second front wing junction and a second rear wing junction.
4. The sanitary article according to claim 3, wherein the first front wing junction and/or the second front wing junction are/is aligned with the neck region of the absorbent core, as seen in the longitudinal direction, or are/is arranged not more than 30 mm, preferably not more than 15 mm, rearwardly from the neck region as measured in the longitudinal direction.
5. The sanitary article according to claim 1, wherein the embossed front functional design element has a V-shaped section pointing towards the rear portion of the sanitary article and wherein a tip of the V-shaped section of the embossed front element is arranged not more than 30 mm, preferably not more than 15 mm, from the neck region, as measured in the longitudinal direction.
6. The sanitary article according to claim 3, wherein the embossed crotch functional design element comprises a first and a second longitudinally extending side section and where a distance between the first and the second longitudinally extending side sections increases rearwardly, as seen in the longitudinal direction.
7. The sanitary article according to claim 5, wherein the embossed crotch functional design element has a front V-shaped section pointing towards the front edge of the sanitary article and/or a rear V-shaped section pointing towards the rear edge of the sanitary article.
8. The sanitary article according to claims 6, wherein the front and/or rear V-shaped sections of the embossed crotch functional design element are connected to the first and second longitudinally extending side sections.
9. The sanitary article according to claim 7, wherein the V-shaped section of the embossed front functional design element and the front V-shaped section of the embossed crotch functional design element are arranged with a distance to each other of between 2 and 15 mm, as seen in the longitudinal direction.
10. The sanitary article according to claim 6, wherein the first and the second longitudinally extending side sections of the crotch embossed functional design element have a respective first and second rear side section end point and wherein the first and/or second rear side section end point are/is aligned with or are/is arranged not more than 30 mm from the first and/or second rear wing junction.
11. The sanitary article according to claim 7, wherein the embossed rear functional design element has a first V-shaped section pointing rearwardly of the sanitary article.
12. The sanitary article according to claim 11, wherein the embossed rear functional design element has a second V-shaped section pointing towards the front portion of the sanitary article and wherein the second V-shaped section is provided closer to the rear transverse edge of the sanitary article than the first V-shaped section of the embossed rear functional design element and wherein the first and the second V-shaped sections of the embossed rear functional design element are connected with a first and a second longitudinally extending side section of the embossed rear functional design element.
13. The sanitary article according to claim 11, wherein the inner region of the embossed rear functional design element is provided with a first and a second embossed line and wherein the first and the second embossed line extend in parallel with a respective leg section of the first V-shaped section of the embossed rear functional design element.
14. The sanitary article according to claim 11, wherein a tip of the rear V-shaped section of the embossed crotch functional design element is arranged at a distance of between 2 mm and 20 mm from a tip of the first V-shaped section of the embossed rear functional design element , optionally wherein a first and a second leg section of the rear V-shaped section of the embossed crotch functional design element extend in parallel with a first and a second leg section of the first V-shaped section of the embossed rear functional design element.
15. The sanitary article according to claim 1, wherein each of the embossed front functional design element, the embossed crotch functional design element and the embossed rear functional design element is aligned with each other, as seen in the longitudinal direction, and centred along a longitudinal centerline of the sanitary article.
16. The sanitary article according to claim 5, wherein the front and/or rear V-shaped sections of the embossed crotch functional design element are connected to the first and second longitudinally extending side sections, and wherein the V-shaped section of the embossed front functional design element and the front V-shaped section of the embossed crotch functional design element are arranged with a distance to each other of between 2 and 15 mm, as seen in the longitudinal direction. wherein the V-shaped section of the embossed front functional design element and the front V-shaped section of the embossed crotch functional design element are arranged with a distance to each other of between 2 and 15 mm, as seen in the longitudinal direction.
17. The sanitary article according to claim 4, wherein the embossed crotch functional design element comprises a first and a second longitudinally extending side section and where a distance between the first and the second longitudinally extending side sections increases rearwardly, as seen in the longitudinal direction, wherein the first and the second longitudinally extending side sections of the crotch embossed functional design element have a respective first and second rear side section end point, and wherein the first and/or second rear side section end point are/is aligned with or are/is arranged not more than 30 mm from the first and/or second rear wing junction.
18. The sanitary article according to claim 3, wherein the V-shaped section of the embossed front functional design element and the front V-shaped section of the embossed crotch functional design element are arranged with a distance to each other of between 2 and 15 mm, as seen in the longitudinal direction, wherein the first and the second longitudinally extending side sections of the crotch embossed functional design element have a respective first and second rear side section end point, and wherein the first and/or second rear side section end point are/is aligned with or are/is arranged not more than 30 mm from the first and/or second rear wing junction.
19. The sanitary article according to claim 4, wherein the V-shaped section of the embossed front functional design element and the front V-shaped section of the embossed crotch functional design element are arranged with a distance to each other of between 2 and 15 mm, as seen in the longitudinal direction, wherein the first and the second longitudinally extending side sections of the crotch embossed functional design element have a respective first and second rear side section end point, and wherein the first and/or second rear side section end point are/is aligned with or are/is arranged not more than 30 mm from the first and/or second rear wing junction.
20. The sanitary article according to claim 7, wherein the first and the second longitudinally extending side sections of the crotch embossed functional design element have a respective first and second rear side section end point and wherein the first and/or second rear side section end point are/is aligned with or are/is arranged not more than 30 mm from the first and/or second rear wing junction wherein a tip of the rear V-shaped section of the embossed crotch functional design element is arranged at a distance of between 2 mm and 20 mm from a tip of the first V-shaped section of the embossed rear functional design element, optionally wherein a first and a second leg section of the rear V-shaped section of the embossed crotch functional design element extend in parallel with a first and a second leg section of the first V-shaped section of the embossed rear functional design element.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0035] The present invention will be further explained hereinafter by means of non-limiting examples and with reference to the appended drawings wherein:
[0036]
[0037]
[0038]
DETAILED DESCRIPTION
[0039] It is to be understood that the drawings are schematic and that individual components are not necessarily drawn to scale. The sanitary articles shown in the figures are provided as examples only and should not be considered limiting to the invention. Accordingly, the scope of invention is determined solely by the scope of the appended claims.
[0040]
[0041] The topsheet 2 may include or consist of fibrous nonwoven layer(s) being spunbonded, meltblown, carded, hydroentangled, wetlaid. Suitable nonwoven materials can be composed of natural fibers, such as woodpulp or cotton fibers, synthetic thermoplastic fibers, such as polyolefins, polyesters, polyamides and blends and combinations thereof or from mixtures of natural and synthetic fibers. The materials suited as topsheet material should be soft and non-irritating to the skin and be readily penetrated by body fluid, such as menstrual fluid and urine.
[0042] The backsheet 3 may consist of a thin plastic film, e.g. a polyethylene or polypropylene film, a nonwoven material coated with a liquid impervious material, a hydrophobic nonwoven, which resist liquid penetration. Laminates of plastic films and nonwoven materials may also be used. The backsheet material can be breathable to allow vapor to escape from the absorbent structure, while still preventing liquids from passing through the backsheet material.
[0043] The absorbent core 4 is the absorbent structure of the article which acquires and stores bodily fluids. The absorbent core may be of any conventional kind. Examples of commonly occurring absorbent materials are cellulosic fluff pulp, tissue, highly absorbent polymers (so called superabsorbents), absorbent foam materials, absorbent nonwoven materials or the like. It is common to combine cellulosic fluff pulp with superabsorbent polymers in an absorbent core. Superabsorbent polymers are water-swellable, water-insoluble organic or inorganic materials capable of absorbing at least about 20 times their own weight of an aqueous solution containing 0.9 weight percent of sodium chloride. Organic materials suitable for use as a superabsorbent material can include natural materials such as polysaccharides, polypeptides and the like, as well as synthetic materials such as synthetic hydrogel polymers. Such hydrogel polymers include, for example, alkali metal salts of polyacrylic acids, polyacrylamides, polyvinyl alcohol, polyacrylates, polyacrylamides, polyvinyl pyridines, and the like. Other suitable polymers include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene maleic anhydride copolymers and mixtures thereof. The hydrogel polymers are preferably lightly cross-linked to render the material substantially water insoluble. Preferred superabsorbent materials are further surface cross-linked so that the outer surface or shell of the superabsorbent particle, fibre, flake, sphere, etc. possesses a higher crosslink density than the inner portion of the superabsorbent. The superabsorbent materials may be in any form suitable for use in absorbent composites including particles, fibres, flakes, spheres, and the like. A high absorption capacity is provided by the use of high amounts of superabsorbent material. Thin absorbent cores which are common in for example sanitary napkins, baby diapers and incontinence guards, often comprise a compressed, mixed or layered structure of cellulosic fluff pulp and superabsorbent polymers. The size and absorbent capacity of the absorbent core may be varied to suit different product types, such as sanitary napkins for adult incontinent persons or panty liners.
[0044] Generally, the core can be of unitary construction, whereby for example the manufacturing process can be simplified. The phrase unitary construction in the present context is intended to mean that the absorbent core is constructed from essentially one type of material, this being essentially the same material, or essentially the same combination of two or more materials throughout the absorbent core. Variations in density and concentration of the material may occur, but these are limited to those which may be obtained without incorporation of regions which have been formed separately and then physically joined to each other. For example, when the absorbent core comprises a matrix of hydrophilic fibres and superabsorbent material as described above, the relative concentrations of superabsorbent material and fibres may be different in different parts of the core. However, the absorbent core of unitary construction does not comprise layers or laminates of different composition. Likewise, variations in the density or concentration of various components across the longitudinal direction, the transverse direction or the thickness direction of the absorbent core are acceptable, yet the core should not comprise areas or layers of different composition which are formed separately and later joined together.
[0045] A suitable technique for manufacturing the absorbent cores of the present disclosure is mat- forming through an air-laying process. In the process an air-permeable mould is provided. Fibrous material is air-laid into the mould and the mould is filled, whereby an absorbent core is produced in with a desired amount of fibrous material.
[0046] The sanitary article 1 has an extension in a longitudinal direction L and in a transverse direction T. The sanitary article 1 has first and second longitudinal side edges 5,6 extending in the longitudinal direction L and front and rear transverse side edges 7,8 extending in the transverse direction T. The sanitary article is made up of a front portion 9, a crotch portion 10 and a rear portion 11, as seen in the longitudinal direction L. The absorbent core 4 comprises a head portion 13, a body portion 14 and a neck portion 12, the neck portion 12 forming a transitional region between the head portion 13 and the body portion 14, with the head portion 13 being positioned in the front portion 9 of the sanitary article 1 and the body portion 14 being positioned in the crotch portion 10 and in the rear portion 11 of the sanitary article 1. A transverse width w n of the absorbent core 3 at the neck region 12 is smaller than a maximum transverse width of the absorbent core 4 in the head portion 13 and in the body portion 14.
[0047] The sanitary article 1 has a first fastening wing 18 extending along the first longitudinal side edge 5 between a first front wing junction 18a and a first rear wing junction 18b and a second fastening wing 19 extending along the second longitudinal side edge 6 between a second front wing junction 19a and a second rear wing junction 19b. The first front wing junction 18a and the second front wing junction 19a are arranged not more than 15 mm rearwardly from the neck region 12 as measured in the longitudinal direction L.
[0048] In accordance with the present disclosure, the absorbent core 4 is embossed with functional design elements and comprises three individual and separate embossed functional design elements 15,16,17. The respective functional design elements 15,16,17 are made by embossing of the tophseet 2 and the absorbent core 4 together. However, the embossings may alternatively be made in only the absorbent core 4. The embossed functional design elements 15,16,17 having a boundary comprising continuous or discontinuous line(s) delimiting a respective inner region 15,16,17 of the embossed functional design elements 15,16,17. In
[0049] An embossed front functional design element 15 is arranged in the front portion 9 of the sanitary article 1. The embossed front functional design element 15 has a heart shape including a V-shaped section 15v pointing towards the rear portion 11 of the sanitary article 1. A tip of the V-shaped section 15v of the embossed front element 15 is arranged not more than 15 mm, preferably not more than 10 mm, from the neck region 12, as measured in the longitudinal direction L.
[0050] An embossed crotch functional design element 16 is arranged in the crotch portion 10 of the sanitary article 1. The embossed crotch functional design element 16 comprises a front V-shaped section 16vf pointing towards the front edge 7 of the sanitary article 1 and a rear V-shaped section 16vr pointing towards the rear edge 8 of the sanitary article 1. A first and a second longitudinally extending side section 16a,16b extends between and connects the front V-shaped section 16vf and the rear V-shaped section 16vr of the embossed crotch functional design element 16. As may be seen in
[0051] The first and the second longitudinally extending side sections 16a,16b of the crotch embossed functional design element 16 have a respective first and second rear side section end point 16ar,16br, the first and second rear side section end point being arranged not more than 15 mm from the first and/or second rear wing junction 18b,19b, as seen in the longitudinal direction L.
[0052] An embossed rear functional design element 17 is arranged in the rear portion 11 of the sanitary article 1. The embossed rear functional design element 17 has a first V-shaped section 17vf pointing rearwardly of the sanitary article 1 and a second V-shaped section 17vr pointing towards the front portion of the sanitary article 1. The second V-shaped section 17vr of the embossed rear functional design element 17 is provided closer to the rear transverse edge 8 of the sanitary article 1 than the first V-shaped section 17vf of the embossed rear functional design element 17. The first and the second V-shaped sections 17vf,17vr of the embossed rear functional design element 17 are connected with a first and a second longitudinally extending side section 17a,17b of the embossed rear functional design element 17.
[0053] Each of the embossed front functional design element 15, the embossed crotch functional design element 16 and the embossed rear functional design element 17 is aligned with each other, as seen in the longitudinal direction L, and centred along a longitudinal centerline L.sub.C of the sanitary article 1.
[0054] The sanitary article 1 according to the present disclosure may further include a liquid acquisition sheet (not shown in the Figs.), which acts as a liquid distribution layer. The acquisition layer can have different shapes which may be adapted to suit the shape of the absorbent core. The acquisition layer may extend 1-2 mm or more beyond the outer edge of the core 4 (preferably around the entire periphery of the core 4). This configuration can provide neat edges at the periphery of the article. The liquid acquisition sheet may be located between the topsheet 2 and the core 4 and is suitably placed on top of the absorbent core. The liquid acquisition sheet is adapted to quickly receive and temporarily store discharged liquid before it is absorbed by the absorbent core 6. Such acquisition distribution layers may be composed of for example airlaid nonwoven, spunlace nonwoven, high loft nonwoven or foam materials. The nonwoven material may be hydrophilic. A hydrophilic material may be obtained by adding a surfactant.
[0055]
[0056] The sanitary article 1 has a first fastening wing 18 extending along the first longitudinal side edge 5 between a first front wing junction 18a and a first rear wing junction 18b and a second fastening wing 19 extending along the second longitudinal side edge 6 between a second front wing junction 19a and a second rear wing junction 19b. The first front wing junction 18a and the second front wing junction 19a are arranged not more than 15 mm rearwardly from the neck region 12 as measured in the longitudinal direction L.
[0057] The absorbent core 4 is embossed with functional design elements and comprises three individual and separate embossed functional design elements 15,16,17. The respective functional design elements 15,16,17 are made by embossing of the tophseet 2 and the absorbent core 4 together. However, the embossings may alternatively be made in only the absorbent core. The embossed functional design elements 15,16,17 having a boundary comprising continuous or discontinuous line(s) delimiting a respective inner region 15,16,17 of the embossed functional design elements 15,16,17 and each of the embossed front, crotch and rear functional design elements 15,16,17 is different from one another in both size and shape.
[0058] An embossed front functional design element 15 is arranged in the front portion 9 of the sanitary article 1. The embossed front functional design element 15 has a heart shape including a V-shaped section 15v pointing towards the rear portion 11 of the sanitary article 1. A tip of the V-shaped section 15v of the embossed front element 15 is arranged not more than 15 mm, preferably not more than 10 mm, from the neck region 12, as measured in the longitudinal direction L. An embossed curved line 22 is provided frontwards of the embossed front functional design element 15, essentially following the curvature of the front edge 7 of the absorbent core 4.
[0059] An embossed crotch functional design element 16 is arranged in the crotch portion 10 of the sanitary article 1. The embossed crotch functional design element 16 comprises a front V-shaped section 16vf pointing towards the front edge 7 of the sanitary article 1 and a rear V-shaped section 16vr pointing towards the rear edge 8 of the sanitary article 1. A first and a second longitudinally extending side section 16a,16b extends between and connects the front V-shaped section 16vf and the rear V-shaped section 16vr of the embossed crotch functional design element 16. As may be seen in
[0060] The first and the second longitudinally extending side sections 16a,16b of the crotch embossed functional design element 16 have a respective first and second rear side section end point 16ar,16br, the first and second rear side section end point being arranged not more than 15 mm from the first and/or second rear wing junction 18b,19b.
[0061] An embossed rear functional design element 17 is arranged in the rear portion 11 of the sanitary article 1. The embossed rear functional design element 17 has a first V-shaped section 17vf pointing rearwardly of the sanitary article 1 and a second V-shaped section 17vr pointing towards the front portion of the sanitary article 1. The second V-shaped section 17vr of the embossed rear functional design element 17 is provided closer to the rear transverse edge 8 of the sanitary article 1 than the first V-shaped section 17vf of the embossed rear functional design element 17. The first and the second V-shaped sections 17vf,17vr of the embossed rear functional design element 17 are connected with a first and a second longitudinally extending side section 17a,17b of the embossed rear functional design element 17.
[0062] In contrast to the sanitary article illustrates in
[0063] A tip 16rt of the rear V-shaped section 16vr of the embossed crotch functional design element 16 is arranged with a distance of between 2 mm and 20 mm from a tip of the first V-shaped section 17vf of the embossed rear functional design element 17.
[0064] The absorbent core 4 is furthermore provided with a first embossed side line 23, extending along the first longitudinal side edge 5 from the head portion 12, over the neck portion 12 and along a part of the body portion 14, and a second embossed side line 24, extending along the second longitudinal side edge 5 from the head portion 12, over the neck portion 12 and along a part of the body portion 14. The first and second embossed side lines 23,24 being provided with a distance from 3 mm to 10 mm from the respective first and second longitudinal side edge 5,6.
[0065] In the context of the present disclosure, the front wing junctions 18a,19a and the rear wing junctions 18b,19b are defined as follows and with reference to