WO2019038451A1 - Système absorbant intégré pour articles jetables - Google Patents

Système absorbant intégré pour articles jetables Download PDF

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Publication number
WO2019038451A1
WO2019038451A1 PCT/EP2018/073004 EP2018073004W WO2019038451A1 WO 2019038451 A1 WO2019038451 A1 WO 2019038451A1 EP 2018073004 W EP2018073004 W EP 2018073004W WO 2019038451 A1 WO2019038451 A1 WO 2019038451A1
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WO
WIPO (PCT)
Prior art keywords
central core
core
structures
absorbent
central
Prior art date
Application number
PCT/EP2018/073004
Other languages
English (en)
Inventor
Frank Glaug
Karl Andersen
Ricardo BORRERO
Original Assignee
Drylock Technologies Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Drylock Technologies Nv filed Critical Drylock Technologies Nv
Publication of WO2019038451A1 publication Critical patent/WO2019038451A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/4704—Sanitary towels, incontinence pads or napkins having preferential bending zones, e.g. fold lines or grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes

Definitions

  • the present disclosure relates generally to disposable absorbent articles, and, more particularly, to a disposable undergarment (adult and child), diapers (adult and child), garments, wound care dressings and the like, having an integrated absorbent core system with permanently separated channels for effectively and efficiently distributing fluid across the core.
  • Such absorbent products are available in different types, designs, and dimensions, each one having one or more unique features.
  • training pants, baby diapers, adult diapers, and incontinence guards are products designed for the containment of urine and excrement.
  • disposable absorbent articles such as feminine hygiene products (e.g., heavy and light incontinence pads, pantyliners, etc.) that are designed to contain and absorb urine and/or menses by female wearers.
  • feminine hygiene products e.g., heavy and light incontinence pads, pantyliners, etc.
  • Another type of absorbent article includes underpads configured to absorb and collect body fluid discharge from a person who may be generally confined to a bed or chair, or may otherwise be immobilized.
  • Most of the disposable absorbent articles that are commercially available in the marketplace today include a single or multi-layered absorbent core structure.
  • Multi-layer absorbent cores provide more absorbent material in the location of where the urine will be directly emitted, otherwise known as the "void area".
  • the "void area" may contain more than one layer of absorbent material, while the rest of the product may contain only one layer of absorbent material.
  • additional materials and equipment is often needed to construct multi-layer cores, in comparison to single-layer cores.
  • Single-layer absorbent cores while not typically able to absorb as much as a multi-layer core, provide a less bulky and thinner absorbent substrate in the product. It is a known that consumers who use these types of products prefer it to be less bulky and less visual to others during use. Additionally, as noted above, single layer cores are less expensive to manufacture than multi-layer cores.
  • Both multi-layer and single-layer absorbent cores may be calendared or embossed in order to provide even a thinner and higher density substrate.
  • the substrate becomes much stiff er (inflexible) and harder (on the surface). This can become uncomfortable to the wearer and also slow down the rate of fluid absorption. In general, the slower the absorption of fluid, the higher the chance of leakage.
  • While some of the current absorbent articles are designed to contain channels, slits or holes in order to make the absorbent core more comfortable and improve rate of fluid absorption, these designs often lead to inefficient and ineffective fluid distribution and/or the process for manufacturing the designs are inefficient.
  • the absorbent core comprises of a pulp and SAP mixture
  • slit(s) or hole(s) can be made in the absorbent core by inserting spacers into the pockets on forming drum.
  • the absorbent core comprises of an airlaid or web material
  • slit(s) or hole(s) can be made by rotary die cutting or slitting the material and removing the unneeded portions.
  • Channel(s) can also be made in the absorbent core by compressing it, at high pressures, with a patterned anvil.
  • the combination of fluid and pressure e.g., the wearer sitting on the product
  • SAP super absorbent polymer
  • the presently disclosed integrated absorbent core systems and methods for producing the systems involve the provision of a central core system having permanent channels disposed between separate central absorbent core structures and an end core system extending beyond the ends of the central core system.
  • the system provides both improved absorbency performance and an improvement in comfort and fit, due at least in part to the fact that the channels do not collapse when wet and subjected to pressure and instead, remain open to facilitate more efficient and effective fluid transfer.
  • the permanent channels allow fluid to be distributed to other areas of the absorbent core upon insult within the void area, such as, for example, the end core system.
  • the wearer will experience a reduced level of wetness again this skin, especially when subjected to high stress (e.g., the wearer sitting on the absorbent article).
  • high stress e.g., the wearer sitting on the absorbent article.
  • the product's absorbent core system will work better when subjected to multiple fluid insults. Specifically, the permanent sealing and separation prevent the channels from collapsing and disappearing after exposure to significant fluid saturation and high stress.
  • the central core structures are provided in longitudinal strips, because the new integrated absorbent system is designed to fold into a "U" shape configuration, such that each structure forms a U-shape, with, for example, one structure in the middle and a structure on each side of the middle. The structures on each side of the middle will effectively create a vertical absorbent wall that can reduce fluid leakage along the crotch region.
  • the absorbent article With respect to improved comfort and fit, given the channels between the central core structures, the absorbent article will be more flexible and less bulky. This will improve comfort by reducing the material resistance along the crotch region, especially when the legs of the wearer are close together and the absorbent article is compressed by the thighs. Furthermore, because the absorbent core system is designed to be folded into a "U shape" configuration, the product will conform better to the shape of the crotch and be more adaptable to folding, thus providing a better fit. A better fit on the consumer will make the product less visible and prove less embarrassing to the incontinent product user.
  • an integrated absorbent core system includes both a central core system and an end core system.
  • the central core system includes a first substrate having a first side and a second side and a second substrate having a first side and a second side, wherein the second side of the first substrate faces the first side of the second substrate.
  • the central core system also includes a first and second transverse edge and a first and second longitudinal edge.
  • the central core structure includes a first central core structure and a second central core structure, wherein the first and second central core structures are disposed between the first and second substrate, and wherein the first and second central core structures are separated from each other in a transverse direction by at least a space extending between the first and second transverse edge.
  • At least one bond is provided between the first central core structure and the second central core structure, the bond longitudinally extending at least partially through the space.
  • the end core system includes at least a first end core structure extending longitudinally beyond at least one of the first or second transverse edges of the central core system.
  • the at least one bond comprises the first substrate bonded to the second substrate. This bond creates a permanent seal.
  • the at least one bond can be, for example, an ultrasonic bond or a thermal bond. In one embodiment, the bond is an ultrasonic bond.
  • the end core system will provide additional protection against leakage and is capable of absorbing any fluid that runs through the channels formed in the central core system.
  • the end core system has a first side and a second side, and the first side of the first substrate of the central core system is attached to the second side of the end core system.
  • the second side of the second substrate of the central core system is attached to the first side of the end core system. The attachment may be achieved e.g. by compressing the end core system on the central core system, and/or by applying adhesive on the central core system and/or on the end core system.
  • the first and second central core structures each have a length that is greater than a width and a longitudinal axis running the length of the first and second central core structures.
  • the at least one bond runs parallel to the longitudinal axes of the first and second central core structures and extends at least as long as the lengths of both the first central core structure and the second central core structure.
  • the absorbent core structure can also include a third central core structure positioned between the first central core structure and the second central core structure, wherein the first central core structure and the third central core structure are separated from each other in the transverse direction by a first space extending between the first and second transverse edges, and the third central core structure and the second central core structure are separated from each other in the transverse direction by a second space extending between the first and second transverse edges.
  • the absorbent core can also include a first bond longitudinally extending at least partially through the first space and a second bond longitudinally extending at least partially through the second space.
  • both the first and second transverse edges can also include a bond extending in a transverse direction between the first and second longitudinal edges.
  • the central core system includes a first edge bond positioned between the first longitudinal edge and the first and second central core absorbent structures and a second edge bond positioned between the second longitudinal edge and the first and second central core absorbent structures, wherein the first and second edge bonds
  • the central core structures have substantially the same dimensions. In yet other embodiments, at least two central core structures have differing dimensions. For example, in an embodiment containing three central core structures, the third central core structure can have a width that is greater a width of both of the first and second central core structures. In another example the first and second central core structures can have a width that is greater than the third central core structure. In yet another example, the third central core structure has a height that is greater than a height of both of the first and second central core structures. The first and second central core structures can also have a height that is greater than the third central core structure. In yet other embodiments, the third central core structure is longer in length than the first and second central core structures. The first and second central core structures can also be longer in length than the third central core structure.
  • each of the central core structures includes pulp.
  • the central core structures also include super absorbent polymer.
  • the second substrate is a nonwoven material.
  • the second substrate is an acquisition distribution layer.
  • the second substrate is an apertured film.
  • ADL acquisition distribution layer
  • the first substrate is also a nonwoven material.
  • the first substrate is different from the second substrate.
  • the first substrate may be white in color and the second substrate may have a different color, e.g. blue, in order to stand out to the consumer.
  • the central core system also includes an absorbent layer disposed adjacent to the second side of the first substrate. This absorbent layer provides an additional layer for absorbing fluid in the void area.
  • each of the first and second central core structures has a first transverse edge and an opposing second transverse edge separated by the lengths of each of the central core structures.
  • the length of the first central core substrate is equal to the length of the second central core substrate, the first transverse edge of the first central core structure is aligned with the first transverse edge of the second central core structure, and the second transverse edge of the first central core structure is aligned with the second transverse edge of the second central core structure.
  • the system comprises two separate structures - one located on each of the transverse edges of the central core system.
  • a first end core structure extends from a first point between the first and second transverse edge to a point beyond the first transverse edge and a second end core structure extends from a second point between the first transverse edge to a point beyond the second transverse edge.
  • the first point between the first and second transverse edges is closer than the second point to the first transverse edge.
  • the end core system comprises one unitary piece that extends beyond both ends of the central core system.
  • the first and/or the second end core structure also extends in a transverse direction beyond the first and second longitudinal edges of the central core system.
  • an overlap area between the central core system and the first end core structure may extend over at least 1%, preferably at least 2%, and more preferably at least 5% of the length of the central core system, measured in a longitudinal direction; and/or an overlap area between the central core system and the second end core structure extends over at least 1%, preferably at least 2%, and more preferably at least 5% of the length of the central core system, measured in a longitudinal direction.
  • Such an overlap area can ensure a good attachment between the central core system and the first and/or second end core system.
  • the first end core structure comprises absorbent material distributed in a uniform manner and/or the first and second central core structure comprises absorbent material distributed in a uniform manner.
  • the first and second central core structure comprises absorbent material distributed in a uniform manner.
  • the amount of absorbent material per unit length in the first end core structure is lower in an overlap area between the central core system and the end core system than in an area extending longitudinally beyond the first and/or second transverse edge; and/or the amount of absorbent material per unit length in the first and second central core structure is lower in an overlap area between the central core system and the end core system than in a central area of the central core system.
  • the end core system also includes first and second end core substrates, wherein the first end core structure is disposed between the first and second end core substrates; and wherein the first end core structure comprises a first side adjacent to the first end core substrate and a second side adjacent to the second end core substrate.
  • the first and second end core substrate can take the form of a "full" C-fold wrap around the first end core structure.
  • the end core system includes a single end core substrate, wherein the first end core structure is disposed on the end core substrate.
  • the first end core structure may be simply arranged on the end core substrate, or the end core substrate may partially wrap the first end core structure to form a "partial" C-fold wrap.
  • the methods include the following steps - forming at least two central absorbent core structures on a forming drum, each structure formed within a separate pocket on the forming drum and separated from each other in a transverse direction, transferring the central absorbent core structures to a first substrate having two transverse edges and two longitudinal edges, aligning a second substrate layer on top of the first substrate and the central absorbent core structures, bonding the first substrate layer to the second substrate layer between the two central absorbent core structures and on each side of the absorbent core structures adjacent to the longitudinal edges, such that a central core system is formed, and joining the central core system to an end core system, wherein the end core system extends beyond at least one transverse edge of the central core system.
  • the joining may comprise compressing the central core system against the end core system and/or applying adhesive between the central core system and the end core system, e.g. spraying adhesive on the central core system and/or on the end core system.
  • FIG. 1 is a top plan view of an exemplary disposable absorbent article consistent with the present disclosure.
  • FIG. 2 is a bottom plan views of the absorbent article of FIG. 1.
  • FIG. 3 is an enlarged perspective view of a portion of the absorbent article of FIG. 1 illustrating multiple layers separated from one another.
  • FIG. 4 is an exploded cross-sectional view of the absorbent article of FIG. 1 illustrating the components of the absorbent article.
  • FIG. 5 is a top plan view of an integrated absorbent core system according to a first embodiment consistent with the present disclosure.
  • FIG. 6 is a top plan view of an integrated absorbent core system according to a second embodiment consistent with the present disclosure.
  • FIG. 7 is a top plan view of a central core system within the integrated absorbent core system having three independent absorbent structures, consistent with the present disclosure.
  • FIG. 8 is a top plan view of an integrated absorbent core system according to a third embodiment consistent with the present disclosure.
  • FIG. 9 is a cross-sectional view taken along line AA of any one of FIGs. 1-4, showing the three independent absorbent structures having similar width and height geometries.
  • FIG. 10 is a cross-sectional view taken along line AA of any one of FIGs. 1-4, showing the three independent absorbent structures, with the middle structure having a wider width than the side structures.
  • FIG. 11 is a cross-sectional view taken along line AA of any one of FIGs. 1-4, showing the three independent absorbent structures, with the side structures having a wider width than the middle structure.
  • FIG. 12 is a cross-sectional view taken along line AA of any one of FIGs. 1-4, showing the three independent absorbent structures, with the middle structure having a greater height than the side structures.
  • FIG. 13 is a cross-sectional view taken along line AA of any one of FIGs. 1-4, showing the three independent absorbent structures, with each of the side structures having a greater height than the middle structure.
  • FIG. 14 is a top plan view of an integrated absorbent system having contoured independent absorbent structures, as well as a rear end core section having a variable size, consistent with the present disclosure.
  • FIG. 15 is a schematic view of a process for manufacturing integrated absorbent core systems in accordance with the present disclosure.
  • FIGs. 16 and 17 show in the middle a top plan view of an integrated absorbent core system according to a further embodiment, with on the left side a cross sectional view according to a first option and on the right side a cross sectional view according to a second option.
  • FIG. 18 shows on the left side a top plan view of an integrated absorbent core system according to a further embodiment, with on the right side a cross sectional view according to a first option and a second option.
  • FIGs. 19-21 show a cross-sectional view taken along line AA of any one of FIG. 5 or 6, illustrating further embodiments.
  • FIG. 22 is a top plan view of an integrated absorbent core system according to a further embodiment
  • the disclosure is not intended to be limited to the specific forms set forth herein. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient.
  • the presently disclosed integrated absorbent core systems and methods for producing the same generally involve a central core system and an end core system extending beyond at least one of the ends of the central core system.
  • the central core system includes absorbent structures disposed between two substrates and separated from one another by bonds generally extending between the transverse edges of the central core system, such as ultrasonic or heat bonds. These bonds provide permanent channels through which fluid can be distributed to other areas of the absorbent core upon insult within the void area, such as, for example, the end core system.
  • the channels also serve to provide increased flexibility and comfort to the wearer.
  • an edge barrier refers to one or more than one edge barrier.
  • “About” as used herein referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of +/-20 or less, preferably +/-10% or less, more preferably +1-5% or less, even more preferably +/-! or less, and still more preferably +/-0.1% or less of and from the specified value, insofar such variations are appropriate to perform in the disclosed invention.
  • the value to which the modifier "about” refers is itself also specifically disclosed.
  • Absorbent article refers to devices that absorb and contain bodily exudates, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various liquids discharged from the body.
  • Absorbent articles include but are not limited to feminine hygiene garments, baby diapers and pants, adult incontinence garments, various diaper and pants holders, liners, towels, absorbent inserts and the like.
  • Absorbent core refers to a three-dimensional part of the absorbent structure, comprising liquid-absorbing material, useful to absorb and/or retain bodily exudates.
  • Absorbent component refers to a structural constituent of an absorbent structure, e.g., a piece of an absorbent core, such as one of multiple pieces in a multi-piece absorbent core.
  • Absorbent element refers to a part of a functional constituent of an absorbent structure, e.g., a liquid acquisition layer, a liquid distribution layer, or a liquid storage layer formed of a material or materials having particular liquid handling characteristics suitable for the specific function.
  • Absorbent insert refers to a device adapted for insertion into an absorbent article and to serve as an absorbent structure when so inserted.
  • Absorbent layer refers to a term referring to a discrete, identifiable sheet- like or web-like element of an absorbent structure which may remain detached and relatively movable with respect to another such element or may be attached or joined so as to remain permanently associated with another such element.
  • Each absorbent layer may itself include a laminate or combination of several layers, sheets and/or webs of similar or diverse compositions.
  • superabsorbent material As used herein are used interchangeably and refer to any suitable particulate (e.g., flaked, particulate, granular, or powdered) or fibrous cross linked polymeric materials that can absorb at least 5 times and preferably at least about 10 times or more its weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity test (ED ANA 441.2-01).
  • suitable particulate e.g., flaked, particulate, granular, or powdered
  • fibrous cross linked polymeric materials that can absorb at least 5 times and preferably at least about 10 times or more its weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity test (ED ANA 441.2-01).
  • Absorbent polymer material area refers to the area of the absorbent structure wherein adjacent layers are separated by a multiplicity of absorbent polymer material. Incidental contact areas between these adjacent layers within the absorbent particulate polymer material area may be intentional (e.g. bond area's) or unintentional (e.g. manufacturing artefacts). "Absorbent particulate polymer material” as used herein refers to an absorbent polymer material which is in particulate form such as powders, granules, flakes and the like so as to be flowable in the dry state.
  • Absorption refers to the process by which a liquid is taken up within a material.
  • Acquisition layer “acquisition region”, “acquisition surface” or “acquisition material” and the like as used herein refer to a layer having a faster liquid uptake capability.
  • Acquisition distribution layer or “ADL”, as used herein refer to a layer having a both faster liquid uptake capability and a larger capacity in wicking, dispersing and distributing liquid.
  • Absorbency is the ability of a material to take up fluids by various means including capillary, osmotic, solvent, chemical or other action.
  • “Adult incontinence garment” as used herein refers to absorbent articles intended to be worn by incontinent adults, for absorbing and containing bodily exudates.
  • Adhesion refers to the force that holds different materials together at their interface.
  • Adhesive refers to a material, which may or may not be flowable in solution or when heated, that is used to bond materials together.
  • Adsorption refers to the process by which a liquid is taken up by the surface of a material.
  • Airlaying refers to forming a web by dispersing fibers or particles in an air stream and condensing them from the air stream onto a moving screen by means of a pressure or vacuum; a web of fibers produced by airlaying is herein referred to an "airlaid”; an airlaid web bonded by one or more techniques to provide fabric integrity is herein referred to an "airlaid nonwoven”.
  • Apparent density “density” as used herein refers to the basis weight of the sample divided by the caliper with appropriate unit conversions incorporated therein. Apparent density used herein has the unit g/cm3.
  • Body diaper refers to absorbent articles intended to be worn by children, for absorbing and containing bodily exudates which the user draws up between the legs and fastens about the waist of the wearer.
  • Body pants refers to absorbent articles marketed for use in transitioning children from diapers to undergarment intended to cover the lower torso of children, so as to absorb and contain body exudates which article is generally configured like a panty garment and manufactured with a completed waist encircling portion, thereby eliminating the need for the user to fasten the article about the waist of the wearer.
  • Body region refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of a wearer.
  • Backing refers to a web or other material that supports and reinforces the back of a product.
  • Basis weight is the weight per unit area of a sample reported in grams per square meter, g/m2 or gsm.
  • Bodily exudates "body exudates”, “bodily fluids”, “body fluids”, “bodily discharges”, “body discharges”, “liquids” and the like as used herein are used interchangeably and refer to, but are not limited to urine, blood, vaginal discharges, breast milk, sweats and fecal matter.
  • substances generally in a solid form (e.g. powder, film, fiber) or as a foam, or in a liquid form (e.g. emulsion, dispersion, solution) used for example by way of impregnation, spraying, printing, foam application and the like used for attaching or bonding functional and/or structural components, elements and materials, for example including heat and/or pressure sensitive adhesives, hot-melts, heat activated adhesives, thermoplastic materials, chemical activated adhesives/solvents, curable materials and the like.
  • a solid form e.g. powder, film, fiber
  • a foam e.g. emulsion, dispersion, solution
  • emulsion, dispersion, solution used for example by way of impregnation, spraying, printing, foam application and the like used for attaching or bonding functional and/or structural components, elements and materials, for example including heat and/or pressure sensitive adhesives, hot-melts, heat activated adhesives, thermoplastic materials, chemical activated adhesives/solv
  • Bond strength refers to the amount of adhesion between bonded surfaces. It is a measure of the stress required to separate a layer of material from the base to which it is bonded.
  • Chassis refers to a foundational constituent of an absorbent article upon which the remainder of the structure of the article is built up or overlaid, e.g., in a diaper, the structural elements that give the diaper the form of briefs or pants when configured for wearing, such as a backsheet, a topsheet, or a combination of a topsheet and a backsheet.
  • Cellulose fibers refers to naturally occurring fibers based on cellulose, such as, for example cotton, linen, etc.; wood pulp fibers are one example of cellulose fibers; man-made fibers derived from cellulose, such as regenerated cellulose (rayon), or partially or fully acetylated cellulose derivatives (e.g. cellulose acetate or triacetate) are also considered as cellulose fibers.
  • “Cluster” or the like as used herein refers to an agglomeration of particles and/or fibers.
  • curly fibers are used interchangeably and refer to any fibers which have been stiffened by chemical means to increase stiffness of the fibers under both dry and aqueous conditions, for example by way of addition of chemical stiffening agents (e.g. by coating, impregnating, etc.), altering the chemical structure of the fibers themselves (e.g. by cross-linking polymer chains, etc.) and the like.
  • chemical stiffening agents e.g. by coating, impregnating, etc.
  • altering the chemical structure of the fibers themselves e.g. by cross-linking polymer chains, etc.
  • Cohesion refers to the resistance of similar materials to be separated from each other.
  • Computer refers to chambers, cavities, pockets and the like.
  • Crossstock refers to a lightweight non-woven material used to contain and conceal an underlying absorbent core material; examples are the facing layer or materials that cover the absorbent cores of feminine hygiene garments, baby diapers and pants and adult incontinence garments.
  • Rotch region of an absorbent article refers to about 50% of the absorbent article's total length (i.e., in the y-dimension), where the crotch point is located in the longitudinal center of the crotch region. That is, the crotch region is determined by first locating the crotch point of the absorbent article, and then measuring forward and backward a distance of 25% of the absorbent article's total length.
  • “Curing” as used herein refers to a process by which resins, binders or plastics are set into or onto fabrics, usually by heating, to cause them to stay in place; the setting may occur by removing solvent or by cross-linking so as to make them insoluble.
  • Diaper "Diaper”, "conventional diaper”, “diaper-like”, “diaper-like garment” and the like as used herein are used interchangeably and refer to disposable absorbent articles, which typically include a front waist portion and a back waist portion which may be releasably connected about the hips of the wearer during use by conventional fasteners such as adhesive tape fasteners or hook and loop type fasteners.
  • conventional fasteners such as adhesive tape fasteners or hook and loop type fasteners.
  • the article is positioned between the legs of the wearer and the fasteners are releasably attached to secure the back waist portion to the front waist portion of the diaper, thereby securing the diaper about the waist of the wearer.
  • the front waist portion and a back waist portion are connected by relatively non-stretchable or stretchable members (the term “stretchable” as used herein refers to materials that are extensible when forces are applied to the material, and offer some resistance to extension). Hence, such articles are generally not configured to be pulled up or down over the hips of the wearer when the fasteners are attached.
  • Disposable is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).
  • Distribution layer distributed layer
  • distributed region distributed surface
  • distributed material distributed material
  • “Drylaying” as used herein refers to a process for making a nonwoven web from dry fiber; these terms apply to the formation of carded webs, as well as to the air laying formation of random webs; a web of fibers produced by drylaying is herein referred to as a "drylaid”; a drylaid web bonded by one or more techniques to provide fabric integrity is herein referred to a “drylaid nonwoven”.
  • “Dry strength” as used herein refers to the strength of an adhesive joint determined in dry state conditions, immediately after drying under specified conditions or after a period of conditioning in the standard laboratory atmosphere.
  • Fabric refers to a sheet structure made from fibers, filaments and/or yarns.
  • “Feminine hygiene garments” as used herein refer to absorbent hygiene articles intended to be worn by woman, for absorbing and containing body exudates.
  • Fiber refers to the basic threadlike structure from which nonwovens, yarns and textiles are made. It differs from a particle by having a length at least 4 times its width;
  • Natural fibers are either of animal (wool, silk), vegetable (cotton, flax, jute) or mineral (asbestos) origin, while “Man-made fibers” may be either polymers synthesized from chemical compounds
  • polyester polypropylene, nylon, acrylic etc.
  • modified natural polymers rayon, acetate or mineral (glass).
  • Fiber and “filament” are used interchangeably.
  • Fiber pulp as used herein refers to wood pulp specially prepared to be drylaid.
  • Front region “Front region”, “front section” and the like as used herein are used interchangeably and refer to the portion of an absorbent article or part thereof that is intended to be positioned proximate the front of a wearer.
  • Garment facing layer refers to elements of the chassis that form the outer surface of the absorbent article, such as the backsheet, the side panels, the waist fasteners, and the like, when such elements are present.
  • Heat activated adhesive refers to a dry adhesive that is rendered tacky or fluid by application of heat or heat and pressure to the assembly.
  • Heat sealing adhesive refers to a thermoplastic adhesive which is melted between the adherent surfaces by heat application to one or both of the adjacent adherent surfaces.
  • Highloft refers to general term of low density, thick or bulky fabrics.
  • Hot-melt adhesive refers to a solid material that melts quickly upon heating, then sets to a firm bond upon cooling; used for almost instantaneous bonding.
  • Hydrophilic refers to having an affinity for being wetted by water or for absorbing water.
  • Hydrophilic refers to lacking the affinity for being wetted by water or for absorbing water.
  • Immobilization layer refers to a layer able to be applied to the absorbent polymer material or absorbent polymer material area with the intent to bond and/or immobilize absorbent material and/or absorbent layer.
  • Join, “joined” and “joining” as used herein refers to encompassing configurations wherein an element is directly secured to another element by affixing the element directly to the other element, as well as configurations wherein the element is indirectly secured to the other element by affixing the element to an intermediate member or members which in turn is or are affixed to the other element.
  • Knitting refers to the technique for interlocking loops of fibers with needles or similar devices.
  • Layer refers to identifiable components of the absorbent article, and any part referred to as a “layer” may actually comprise a laminate or combination of several sheets or webs of the requisite type of materials.
  • layer includes the terms “layers” and “layered.” “Upper” refers to the layer of the absorbent article which is nearest to and faces the wearer facing layer; conversely, the term “lower” refers to the layer of the absorbent article which is nearest to and faces the garment facing layer.
  • Layer is three dimensional structure with a x dimension width, y dimension length, and z-dimensions thickness or caliper, said x-y dimensions being substantially in the plane of the article, however it should be noted that the various members, layers, and structures of absorbent articles according to the present invention may or may not be generally planar in nature, and may be shaped or profiled in any desired configuration.
  • Machine direction (MD) "longitudinal” and the like as used herein are used interchangeably and refer to a direction running parallel to the maximum linear dimension of the structure and includes directions within ⁇ 45° of the longitudinal direction.
  • Major surface refers to a term used to describe the surfaces of greatest extent of a generally planar or sheet-like structural element and to distinguish these surfaces from the minor surfaces of the end edges and the side edges, i.e., in an element having a length, a width, and a thickness, the thickness being the smallest of the three dimensions, the major surfaces are those defined by the length and the width and thus having the greatest extent.
  • Mass flow refers to the flow of a liquid from one absorbent element or component to another absorbent element or component by channel flow action.
  • Mechanism bonding refers to a method of bonding fibers by entangling them. This can be achieved by needling, stitching with fibers or by the use of high-pressure air or water jets and the like.
  • Nonwoven refers to manufactured sheet, web or batt of directionally or randomly orientated fibers, bonded by friction, and/or cohesion and/or adhesion, excluding paper and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled.
  • the fibers may be of natural or man- made origin and may be staple or continuous filaments or be formed in situ.
  • Nonwoven fabrics can be formed by many processes such as melt blowing, spun bonding, solvent spinning, electrospinning, and carding. The basis weight of nonwoven fabrics is usually expressed in grams per square meter (gsm).
  • Pant "training pant”, “closed diapers”, “pre -fastened diapers”, “pull-on diapers” and “diaper- pants” and the like as used herein are used interchangeably and refer to absorbent articles which are typically applied to the wearer by first leading the feet into the respective leg openings and subsequently pulling the pants from the feet to waist area over the hips and buttocks of the wearer and which are capable of being pulled up or down over the hips of the wearer.
  • Such articles may include a front waist portion and a back waist portion which may be connected about the hips of the wearer by integral or releasable members.
  • a pant may be preformed by any suitable technique including, but not limited to, joining together portions of the article using refastenable and/or non-refastenable bonds (e.g., seam, weld, adhesive, cohesive bond, fastener, etc.).
  • a pant may be preformed anywhere along the circumference of the article (e.g., side fastened, front waist fastened).
  • Polymer refers to but is not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers, terpolymers, etc. and blends and modifications thereof. Unless otherwise specifically limited, the term “polymer” includes all possible spatial configurations of the molecule and include, but are not limited to isotactic, syndiotactic and random symmetries.
  • Rear refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of the wearer.
  • Resin refers to a solid or semisolid polymeric material.
  • substantially cellulose free refers to an absorbent article, structure or core, that contains less than 20% by weight cellulosic fibers, less than 10% cellulosic fibers, less than 5% cellulosic fibers, no cellulosic fibers, or no more than an immaterial amount of cellulosic fibers which do not materially affect the thinness, flexibility or absorbency thereof.
  • Thermobonding and “thermal bonding” as used herein are used interchangeably and refer to a method of bonding fibers by the use of heat and/or high-pressure.
  • Thermoplastic as used herein refers to polymeric materials that have a melting temperature and can flow or be formed into desired shapes on the application of heat at or below the melting point.
  • Ultrasonic refers to the use of high frequency sound to generate localized heat through vibration thereby causing thermoplastic fibers to bond to one another.
  • Water-absorbing “liquid-absorbing”, “absorbent”, “absorbing” and the like as used herein are used interchangeably and refer to compounds, materials, products that absorb at least water, but typically also other aqueous fluids and typically other parts of bodily exudates such as at least urine or blood.
  • Weight facing layer refers to elements of the chassis that form the inner surface of the absorbent article, such as the topsheet, the leg cuffs, and the side panels, etc., when such elements are present.
  • “Weaving” as used herein refers to the process of interlacing two or more sets of yarns at right angles to form a fabric; a web of fibers produced by weaving is herein referred to as a "Woven”.
  • Web material refers to an essentially endless material in one direction, i.e. the longitudinal extension or the length, or the x- direction in Cartesian coordinates relative to the web material. Included in this term is an essentially unlimited sequence of pieces cut or otherwise separated from an essentially endless material.
  • the web materials will have a thickness dimension (i.e. the z-direction) which is significantly smaller than the longitudinal extension (i.e. in x-direction).
  • the width of web materials the
  • Such web materials may be cellulosic fiber materials, tissues, woven or non-woven materials and the like.
  • web materials are supplied in roll form, or on spools, or in a folded state in boxes. The individual deliveries may then be spliced together to form the essentially endless structure.
  • a web material may be composed of several web materials, such as multilayer non-woven, coated tissues, nonwoven/film laminates. Web materials may comprise other materials, such as added binding material, particles, hydrophilizing agents and the like.
  • Weight burst strength is a measure of a layer's ability to absorb energy, when wet and subjected to deformation normal to the plane of the web.
  • Weight refers to the strength of a joint determined immediately after removal from a liquid in which it has been immersed under specified conditions of time, temperature and pressure. The term is commonly used in the art to designate strength after immersion in water.
  • Weighting refers to the forming a web from an aqueous dispersion of fibers by applying modified paper making techniques; a web of fibers produced by wetlaying is herein referred to as a "wetlaid”.
  • Wood pulp refers to cellulosic fibers used to make viscose rayon, paper and the absorbent cores of products such as feminine hygiene garments, baby diapers and pants and adult incontinence garments.
  • X-y dimension refers to the plane orthogonal to the thickness of the article, structure or element.
  • the x- and y-dimensions correspond generally to the width and length, respectively, of the article, structure or element.
  • Z-dimension refers to the dimension orthogonal to the length and width of the article, structure or element.
  • the z-dimension corresponds generally to the thickness of the article, structure or element.
  • the absorbent articles into which the absorbent core systems are integrated can include, but are not limited to adult briefs, adult underwear, baby diapers, children training pants, incontinence pads, feminine care pads, baby changing pads, furniture pads, under pads, wound care, and the like.
  • the absorbent article is a disposable undergarment or absorbent article, such as adult underwear.
  • FIG. 1 provides a top plan view of an exemplary absorbent article 10
  • FIG. 2 provides a bottom plan view of the absorbent article 10. While the following description focuses on disposable undergarments with reference to the illustrated embodiments, it should be clear that the subject disclosure can be used for any type of absorbent article to be worn on a person's body for absorbing bodily fluids and/or excrement.
  • the absorbent article 10 is shown in FIG. 1 from the interior side of the product that is designed to be in direct contact with the wearer, as opposed to the exterior side of the product, as shown in FIG. 2.
  • the absorbent article 10 generally includes a front section and a rear section, wherein the front section is generally designed to be fitted against the front, or anterior portion, of a wearer, while the rear section is generally designed to be fitted against the rear, or posterior portion, of the wearer, such that front and rear sections generally oppose one another once fitted to the wearer.
  • the ends of each of the front and rear sections can include a waist assembly 70, as shown in FIG. 1.
  • the absorbent article also includes a crotch region which encompasses the region in which the integrated absorbent core 20 is attached and spans both the front and the rear portions.
  • the absorbent article 10 can have various shapes and sizes, and is generally configured to be worn between an individual's legs and secured about the waist.
  • the undergarment can include a fastening system.
  • the absorbent article 10 includes tabs 12 extending from the rear section of the absorbent article 10.
  • the absorbent article 10 may be constructed from multiple layers, which may include at least a first layer 18 and a second layer 20.
  • the first layer 18, also referred to herein as the "top sheet 18”, is generally configured to engage a subject's skin and allow a fluid from the subject (i.e., human, animal, etc.) to flow therethrough, at least in a direction away from the subject's skin.
  • the absorbent core 20 can include any number of layers, structures, and arrangements, as discussed in more detail below.
  • the absorbent article 10 includes a third layer 21, also referred to herein as the "fluid impervious barrier 21 ".
  • the absorbent core 20 is positioned between the top sheet 18 and the fluid impervious barrier 21.
  • the fluid impervious barrier 21 may be breathable, not breathable, clothlike or non-cloth-like and can comprise one or more materials that include, but are not limited to, polyethylene, polypropylene, polyester, nylon, polyvinyl chloride, and combinations thereof.
  • the absorbent article 10 further includes a fourth layer 22 coupled to the fluid impervious barrier 21.
  • the fourth layer 22, also referred to herein as the "back sheet 22" generally serves as the outermost layer of the absorbent article 10 that faces away from the wearer's body.
  • the absorbent article 10 can include an additional layer, also referred to herein as an acquisition distribution layer ("ADL"), positioned between the absorbent core 20 and the top sheet 18.
  • ADL acquisition distribution layer
  • the ADL acts as a reservoir to hold onto free fluid until the absorbent core 20 is read to absorb it.
  • the ADL also helps transfer the free fluid along the longitudinal direction of the absorbent article (e.g., direction spanning from the front section to the rear section and vice versa).
  • the ADL 32 can be seen positioned between the top sheet and absorbent core in FIG. 4, as described in more detail below.
  • the back sheet 22 and the top sheet 18 can be made of the same material or different material.
  • the material is preferably a non-woven material.
  • the back sheet 22 is generally formed from a nonwoven material, to provide a more underwear-like appearance and feel, and as well as a more cost-effective and comfortable alternative to conventional disposable undergarment designs.
  • the top 18 and back sheets 22 can be comprised of, for example, non- woven fibers, such as polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), bi-component fibers, polyester, cotton, cotton blend, viscose, rayon, etc.
  • the top sheet 18 can include a zone-coated surfactant or an apertured three-dimensional (3D) film.
  • SM melt-blown and spunbound combinations
  • SMS spun-melt-spun
  • airlaid paper or any combinations thereof.
  • the top sheet 18 can include a zone-coated surfactant or an apertured three-dimensional (3D) film.
  • either or both of the top sheet 18 and bottom sheet 22 can be combined with an elastomeric material to form an elastomeric composite.
  • the elastomeric material can be a stretch adhesive, such as Conforma 9534-62-1 available from H.B. Fuller Company in Vadnais Heights, Minnesota. See U.S. Patent Application No. 62/432,851, incorporated herein by reference in its entirety.
  • the undergarment can include a fastening system.
  • the absorbent article 10 can include tabs 12 extending from the rear section of the absorbent article 10.
  • Various attachment mechanisms e.g., tabs 12
  • the attachment mechanisms can extend from one or both of the side edges on one or both of the front and back portions to attach to the opposite portion.
  • one or more micro-hooks can extend from the side edges of the back portion to engage with the front portion of the absorbent article 10.
  • the surface upon which the attachment means is to be attached can be modified to provide for an improved attachment surface.
  • Improved attachment means are further described in co-pending provisional application titled “Improved Fastening System for Absorbent Articles", having application no. 62/432,729, and filed December 12, 2016, the content of which is incorporated by reference herein in its entirety.
  • a seal such as an ultrasonic bond, can be provided along the side edges of the absorbent article instead of tabs to secure the front portion with the back portion.
  • the waistband 70 of the absorbent article 10, shown generally in FIG. l can include any number of options that provides for a tight fit and seal with the wearer's body, such as elastomeric composites, elastic strands and the likes.
  • the waistband 70 can include any one or combination of laminate elastic film, stretch adhesive, and elastic strands.
  • FIG. 4 is an exploded cross-sectional view of the absorbent article 10 illustrating its various components, including the top sheet 18, ADL 32, absorbent core 20, fluid impervious barrier layer 21, and back sheet 22.
  • the absorbent core 20 is positioned within the crotch portion, as shown in FIG. 1, and is generally disposed between the top sheet 18 and the back sheet 22. As shown in
  • the top sheet 18 may be coupled to the absorbent core 20 via an adhesive 30.
  • the absorbent article 10 can also include an acquisition distribution layer 32 (or "ADL"), with the ADL 32 disposed between the absorbent core 20 and the top sheet 18, as shown in FIG. 4.
  • the ADL is part of the integrated absorbent core 20.
  • the ADL 32 is responsible for distributing fluid across the absorbent core 20 for faster and more even absorbance, and to help provide a sense of dryness to the skin of the wearer.
  • Exemplary acquisition distribution layer materials include, but are not limited to, through air bonded (TAB) nonwovens, "curly” fibers, 3D perforated plastic film, resin-bonded nonwovens, and "high loft” nonwovens.
  • TAB through air bonded
  • the ADL 32 can be coupled to the top sheet 18 with an adhesive 34.
  • the absorbent core 20 may generally include an absorbent material, a nonabsorbent material, or any combination thereof.
  • Exemplary materials include, but are not limited to, one or more of fluff pulp, airlaid material (such asVH270.203 available from Glatfelter located in Pritzwalk, Germany), super absorbent polymer (SAP), tissue, cotton fibers, rayon viscose, creped tissue, paper towel, and curly fibers.
  • the integrated absorbent core may be comprised of a single ply or multiple plies (i.e., layers), such as 2, 3, 4, 5, 6, 7, 8, 9, 10, or more plies.
  • the plies can all have the same thickness, each ply can have a different thickness, or some plies can have the same thickness while others have different thicknesses.
  • Each ply can have a constant thickness or a variable thickness.
  • the plies can all be made up of the same material or of different materials.
  • Each ply itself can also be made up of more than one material, such that the materials are non-homogeneously distributed.
  • a unitary (single) but non-homogenous absorbent layer or ply can have a portion that comprises fluff without SAP and another portion that comprises fluff with SAP, and optionally another portion that comprises fluff with a different proportion of SAP relative to fluff.
  • the back sheet 22 may generally extend over all or at least a portion of the absorbent article 10, wherein the back sheet 22 provides a garment-facing surface of the undergarment when the undergarment is worn under clothing.
  • the back sheet 22 can be joined to the fluid impervious barrier 21 (when present), via an adhesive 28.
  • the adhesive can be, but is not limited to, an elastomeric adhesive, or a construction adhesive, such as the 5-5603 olefin adhesive also from H.B. Fuller Company.
  • the fastening system of the absorbent article shown in FIG. 4 includes tabs 12, which are secured via adhesive 42. It is to be understood that underwear-type disposable absorbent articles need not include tabs and can instead include a bond, such as an ultrasonic bond along the side edges of the front and rear sections when folded in half.
  • the absorbent article 10 may include a stand-up leg elastic assembly 36, including a nonwoven material, one or more elastic components 38, and an adhesive 40.
  • leg elastics 50 and leg elastic adhesives 52 may be layered generally between the back sheet 22, the polymeric barrier layer 21, and respective left and right side tabs 12. The leg elastics 50 may extend substantially parallel to a longitudinal axis of the absorbent article 10 at or near leg cutouts.
  • the absorbent article 10 may optionally include printing 46 over all or a portion of the surface of one or more of the components, such as, but not limited to the top sheet 18, nonwoven back sheet 22, and the polymeric barrier layer 21.
  • the printing can include graphic designs, size indicia, or other markings for aesthetic or functional purposes.
  • the undergarment may optionally include a wetness indicator 48, such as can be positioned substantially centrally along a portion of a length of the undergarment.
  • Additional exemplary absorbent articles and methods include, but are not limited to, those disclosed in U.S. Patent Application Nos. 62/407,152; 62/407,161 ; 61/705,802; 14/037,093;
  • the integrated absorbent core systems 20 and methods for producing the same involve a central core system and an end core system extending beyond at least one of the ends of the central core system.
  • the central core system includes at least two central core structures disposed between two substrates and separated from one another by at least one bond extending between the transverse edges of the central core system, such as an ultrasonic or heat bond.
  • the end core system includes at least one end core structure extending longitudinally beyond at least one of the transverse edges of the central core system.
  • the central core system 100 includes a first substrate 116 having a first side and a second side, a second substrate 118 having a first side and a second side, wherein the second side of the first substrate 116 faces the first side of the second substrate 118, a first 120 and second transverse edge 122 and a first 124 and second longitudinal edge 126, a first central core structure 102a, a second central core structure 102b, and a third central core structure 102c, wherein the three central core structures are disposed between the first 116 and second substrate 118, and wherein the central core structures 102 are separated from each other in a transverse direction by at least a space "S" extending between the first and second transverse edge 120, 122, and at least one bond 110a and 110b between each of the central core structures longitudinally extending at least partially through the space.
  • S space
  • the end core system 130 includes at least a first end core structure 132 extending longitudinally beyond at least one of the first 120 or second transverse edges 122 of the central core system 100. Additional detail with respect to the central core structures disposed between substrates 116 and 118 can be seen in further detail in FIGs. 9-13, which each show a cross sectional view of the central core system 100 taken at line AA from FIGs. 5-8. As shown, the first substrate 116 is disposed below the central core structures 102a, 102b, and 102c, with its first side facing the end core system 130 and its second side facing the second substrate 118.
  • the first substrate 116 can be made of any material suitable for use in disposable absorbent articles that absorbs fluid. Suitable materials include, but are not limited to, nonwoven materials.
  • the nonwoven materials are thermoplastic nonwoven materials, such as spunbound (SB) or spunbond/melt/spunbond (SMS) polypropylene.
  • SB spunbound
  • SMS spunbond/melt/spunbond
  • One commercial example of a suitable high-thermoplastic nonwoven is the spunbond polypropylene (SBPP) from Berry Global located in Charlotte, North Carolina having a basis weight of 12 gsm.
  • the first substrate 116 can have a basis weight between about 2 and 20 gsm, such as about 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 gsm. In one embodiment, the basis weight is between about 8 and 12 gsm.
  • the second substrate 118 is disposed on top of the central core structures 102a, 102b, and 102c, with its first side facing the wearer's body and the second side facing away from the wearers' body and toward the first substrate 116.
  • the second substrate 118 can be any material suitable for use in disposable absorbent articles that absorbs fluid while also allowing fluid to pass through.
  • the second substrate 118 is a separate layer from the acquisition layer.
  • the second substrate 118 serves as the acquisition layer. Suitable materials include, but are not limited to nonwoven materials and films.
  • the material can include, but is not limited to, a thermoplastic nonwoven material, such as spunbound (SB) or spunbond/melt/spunbond (SMS) polypropylene.
  • the material can include, but is not limited to, a nonwoven material, such as a high-loft nonwoven or an apertured film.
  • a suitable high-loft nonwoven is ST6CT8H50 (50 gsm) from Shalag Nonwovens in Upper Galilee, Israel.
  • One commercial example of a suitable apertured film is C- 120 from Tredegar Corporation located in Richmond, VA.
  • each of the substrates in their final form can be any shape, such as a polygon shape in which each side is a straight line (e.g., rectangular, square, trapezoid), a curved shape (e.g., circle, elliptical, etc), or a blend of straight lines and curved lines.
  • both the first and the second substrate are the same shape.
  • the first and the second substrate are different shapes.
  • the first and second substrates can be coextensive with one another, such that all of their edges meet one another, or one substrate can extend further than the other, even if they are the same shape.
  • the central core structures 102 are disposed between the substrates 116 and 118. Although shown as rectangular strips in FIGs. 5-8, the central core structures 102 can be any shape or size, such as a polygon shape in which each side is a straight line (e.g., rectangular, square, trapezoid), a curved shape (e.g., circle, elliptical, etc), or a blend of straight lines and curved lines.
  • a polygon shape in which each side is a straight line (e.g., rectangular, square, trapezoid), a curved shape (e.g., circle, elliptical, etc), or a blend of straight lines and curved lines.
  • the shape of the central core structures is defined by four connecting lines, or edges, regardless of whether they are straight or curved - a first transverse edge 106 and an opposing transverse edge 107 separated by the lengths of each of the structures, as well as a first longitudinal edge 104 and an opposing second longitudinal edge 105.
  • all of the lines are straight, wherein the lines on some of the structures in FIG. 14 are curved.
  • the transverse edges 104, 105 are parallel to one another.
  • the longitudinal edges 104, 105 of the outer central core structures are curved such that they are not parallel with one another, although they are mirror images of each other.
  • the opposing longitudinal edges of a central core structure 102 can also be straight, but not parallel to one another.
  • the central core structures 102a, 102b, 102c are shaped such that two curved channels are formed which diverge from a central area of the central core system 100 in the direction of the first and second transverse edge 120, 122.
  • each central core structures 102 can each have the same shape, or one or more structures can have shapes that vary from one another.
  • each central core structures 102 has the same shape.
  • the middle central core structure 102b has a rectangular shape, wherein the outer central core structures 102a and 102c have a combination of linear and curved lines to provide a contoured look.
  • each of the structures 102 can also vary between some or all of the structures 102 or can be the same, even if each of the structures 102 has the same general shape.
  • all of the central core structures have the same dimensions.
  • some, but not all of the central core structures can have the same dimensions.
  • the width of the middle central core structure 102b is wider than the outer structures 102a and 102c, with each of the outer structures having the same dimensions.
  • the width of the middle central core structure 102b is less than the widths of the outer core structures 102a and 102c, with each of the outer central core structures having the same dimensions.
  • the height of the middle central core structure 102b is greater than the outer central core structures 102a and 102c, which the outer central core structures have the same dimensions.
  • the height of the middle central core structure 102b is less than the heights of the outer central core sections 102a and 102c, with the outer central core structures having the same dimensions.
  • the outer central core structures are longer in length than the middle central core structure.
  • the number of central core structures 102 can also vary, as long as there are more than two structures. For example, but not limitation, there can be 2, 3, 4, 5, 6, 7, 8, 9, 10, or more central core structures 102 within one central core system 100.
  • the central core structures 102 are separated from one another, such that they do not physically touch, forming a space "S" between the structures in the transverse direction through which fluid can flow.
  • the central core structures have a length that is greater than a width with a longitudinal axis running the length of the core structures.
  • the space S between the structures extends in a longitudinal direction between the two transverse edges 120 and 122 of the central core system 100.
  • their transverse edges 106, 107 can be aligned with one another or they can differ.
  • the transverse edges of each of the structures are aligned with one another.
  • the central core structures 102 can be made of any material or combination of materials suitable for absorbing fluid in a disposable product, such as, for example, fluff pulp, airlaid material, super absorbent polymer (SAP), tissue, cotton fibers, rayon viscose, creped tissue, paper towel, and curly fibers.
  • SAP super absorbent polymer
  • Each of the central core structures 102 can have the same absorbent material composition, or one or more of the structures can have a different absorbent material composition.
  • the composition of the central core structures 102 includes one or more super absorbent polymers (SAPs).
  • SAPs super absorbent polymers
  • One commercial example of a suitable SAP is Max Favor 2010 from Evonik Corporation located in Greensboro, North Carolina.
  • the composition of the central core structures includes pulp in addition to SAP.
  • One commercial example of a suitable pulp material is Golden Isle CO Fluff Grade 4855 from GP Cellulose located in Atlanta,
  • the two materials can be provided at any ratio, such anywhere as between 1% SAP to 99% pulp (l%/99%) and 99 % SAP to 1 % pulp (99%/l%), for example at SAP/pulp percentage ratios of 10%/90%, 15%/ 85%, 20%/80%, 25%/75%, 30%/70%, 35%/65%, 40%/60%, 45%/55%,
  • the composition of the central core structures 102 includes an airlaid material.
  • an airlaid material is VH-460.113 (460gsm) available from Glatfelter Falkenhagen GmbH located in Pritzwalk, Germany.
  • bonding 110 is provided in the spacing S between the structures. As shown in FIGs.
  • the bonds 110 involve the bonding of the first substrate 116 to the second substrate 118 in the spacing SI, S2 between the structures 102.
  • the bonds 110 can be any type of bond, such as, for example and not limitation, an ultrasonic bond, a thermal/heat bond, or an adhesive bond, etc.
  • the bonds are ultrasonic bonds. It is to be understood that while all of the bonds 110 can be the same type of bond (e.g., ultrasonic, heat, etc), the types of bond can vary. In some embodiments, the bonds 110 only extend partially through the space S between central core structures 102.
  • the bonds between the central core structures should extend between the first and second transverse edges 120 and 122 of the central core system at least the entire length of the bordering central core structures 102 to ensure that the structures 102 remain permanently separated.
  • the bonds 110 extend all the way to the transverse edges 120 and 122 of the central absorbent core system 100.
  • the bonds 110 do not need to extend all the way to the transverse edges 120 and 122, instead extending to a point between the transverse edges 106, 107 of the central core structures but before reaching the transverse edges 120 and 122 of the central core system 100.
  • the bonds 110 run parallel to the longitudinal axis of one or more of the central core structures 102.
  • the bonds 110 do not run parallel to the longitudinal axis of the central core structures 102 (not shown).
  • a bond can be provided at one or both of the transverse edges of the central absorbent core system, wherein the bond extends in the transverse direction between the two longitudinal edges 124 and 126 (not shown).
  • Bonds 112 can also be provided at or near the longitudinal edges 124 and 126 of the central absorbent core system 110, wherein the bond 112 extends in the longitudinal direction between the two transverse edges 120 and 122.
  • the edge bonds 112 can extend all the way to the transverse edges 120 and 122 of the central absorbent core system 100, or they can instead partially extend to a point before reaching the transverse edges 120 and 122 of the central core system 100.
  • the central core system 100 is to be aligned with the end core system 130 such that the end core system 130 extends beyond at least one of the transverse edges 120, 122 of the central core system 100, as shown in FIGs. 5, 6, 8, and 14.
  • the end core system 130 includes at least one end core absorbent structure for absorbing fluid.
  • there is one end core structure 132 that extends the entire length of the central core system 100 and beyond each of the transverse edges 120, 122 of the central core system 100, as shown in FIG. 6.
  • the end core structure(s) act as barriers to catch fluid that flow along the channels to the transverse edges 120, 122 of the central core system 100. Without the end core structure(s), fluid would flow out of the channels and potentially leak out of the front or back of the absorbent article 10.
  • the end core structures 132, 134 do not extend the entire length of the central core system, the structures extend from a point between the two transverse edges 120, 122 of the central core system 100 to a point beyond the transverse edges.
  • the end core structures 132, 134 overlap with the transverse edges 106, 107 of the central core structures.
  • the first end core structure 132 extends from a first point PI between the first 106 and second transverse edge 107 to a point beyond the first transverse edge 106 and the second end core structure 134 extends from a second point P2 between the first 106 and second transverse edge 107 to a point beyond the second transverse edge 107.
  • the first point PI between the first and second transverse edges is closer than the second point P2 to the first transverse edge 106.
  • an extra absorbent layer (e.g., end core structure 132) is provided under the entire length of the central core system 100, which provides additional absorbent capacity to the crotch area where absorbency is needed the most - essentially forming a dual-core design with the central core system 100 forming the "top absorbent core” and the end core system 130 forming the
  • bottom absorbent core In most dual absorbent core designs, the top absorbent core (core closest to the wearer's bod) is usually shorter and narrower than the bottom absorbent core and is centered/aligned with the insult area (the location where the urine is emitted from the body and where absorbency is needed most) of the product.
  • traditional top absorbent cores are not ideal with respect to their ability to spread the fluid effectively and efficiently throughout the product. As a result, leakage could occur in the crotch region, especially at the sides, from overloading. Additionally, once the traditional top absorbent cores become wet, they typically lose integrity and fall apart. This is a problem when the product is exposed to multiple insults and is under stress, as is often the case in incontinence usage.
  • the dual core system of FIG. 6 with the top central absorbent system and its channels solve this problem by absorbing and distributing fluid effectively and efficiently, even while in the wet stage.
  • Each of the end core structure(s) 132, 134 can have any shape, such as a rounded shape, square or rectangular shape, hourglass shape, or any other geometrical shape.
  • the end core structures 132, 134 in FIGs. 5 and 14 are shown as having a rounded shape, wherein the end core structure 132 in FIG. 6 has an hour glass, or peanut shape, and the end core structures 132, 134 in FIG. 8 have a rectangular shape.
  • the end core structures when provided separately, can each have the same shape, as shown in FIG. 5, and by the solid lines in FIGs. 8 and 14.
  • the end core structures can also differ in size and shape, such as when the second end core substrate extends down to the dotted lines in FIGs. 8 and 14.
  • the end core structure disposed in or closest to the rear section of the absorbent article will be the largest in size. It is also contemplated that the ends of the single end core structure can also vary in size and shape, despite being shown as identical in FIG. 6. Depending on the shape, size, and positioning of the end core structures 132, 134 with respect to the central core system 100, in certain embodiments, the end core structure(s) 132, 134 also extend in a transverse direction beyond the first 124 and second longitudinal edges 126 of the central core system 100. This can especially be seen in FIG. 8. Additionally, extrapolating the longitudinal edges beyond the transverse edges to form lines Ba and Bb, in certain embodiments, the end structures 132, 134 extend in a transverse direction beyond lines Ba and Bb, as shown in FIGs. 5, 6, 8, and 14.
  • the end core structures can be made of any material or combination of materials suitable for absorbing fluid in a disposable product, such as, for example, fluff pulp, airlaid material, super absorbent polymer (SAP), tissue, cotton fibers, rayon viscose, creped tissue, paper towel, and curly fibers.
  • SAP super absorbent polymer
  • Each of the central core structures can have the same absorbent material composition, or one or more of the structures can have a different absorbent material composition.
  • the end core structures include at least one super absorbent polymer (SAP).
  • the end core structures include pulp as well.
  • the two materials can be provided at any ratio, such anywhere as between 1% SAP to 99% pulp (l%/99%) and 99 % SAP to 1 % pulp (99%/l%), for example at SAP/pulp percentage ratios of 10%/90%, 15%/ 85%, 20%/80%, 25%/75%, 30%/70%, 35%/65%, 40%/60%, 45%/55%, 50%/50%,
  • the end core structures are made from an airlaid material or other absorbent material that is available in roll form.
  • an airlaid material is VH-460.113 (460gsm) available from Glatfelter Falkenhagen GmbH located in Pritzwalk, Germany.
  • an overlap area between the central core system 100 and the first end core structure 132 may extend over at least 1%, preferably at least 2%, more preferably at least 5%, and for example between 5 and 25% of the length of the central core system 100, measured in a longitudinal direction; and/or an overlap area between the central core system 100 and the second end core structure 134 may extend over at least 1%, preferably at least 2%, more preferably at least 5%, %, and for example between 5 and 30% of the length of the central core system 100.
  • FIG. 16 and 17 illustrate on the right side an example embodiment in which the end core structures 132, 134 comprise absorbent material distributed in a uniform manner and the central core structures 102a, 102b, 102c comprise absorbent material distributed in a uniform manner.
  • FIG. 18 illustrates in a first cross sectional view adjacent the plan view, an embodiment with a single end core structure 132 extending along the full length of the central core system 100, wherein both the end core structure 132 comprises absorbent material distributed in a uniform manner and the central core structures 102a, 102b, 102c comprise absorbent material distributed in a uniform manner.
  • FIG. 16 and 17 illustrate on the left side an example embodiment in which the amount of absorbent material per unit length in the end core structures 132, 134 is lower in an overlap area between the central core system 100 and the end core system 130 than in an area extending longitudinally beyond the first and second transverse edge 120, 122; and the amount of absorbent material per unit length in the central core structures 102a, 102b, 102c is lower in an overlap area between the central core system 100 and the end core system 130 than in a central area of the central core system 100.
  • FIG. 18 illustrates in a second cross sectional view, an embodiment with a single end core structure 132 extending along the full length of the central core system 100, wherein the amount of absorbent material per unit length in the end core structure 132 is lower in an overlap area between the central core system 100 and the end core system 130 than in an area extending longitudinally beyond the first and second transverse edge 120, 122; and the amount of absorbent material per unit length in the central core structures 102a, 102b, 102c is lower in an overlap area between the central core system 100 and the end core system 130 than in a central area of the central core system 100.
  • the amount of absorption material in the central absorbent structures may gradually decrease (tapered form) from a line Ct between the first and second transverse edge 120, 122 in the direction of the first transverse edge 120 and in the direction of the second transverse edge 122, respectively.
  • the line Ct may be a center line of the central absorbent system 130, but may also be a line off-center, e.g. a line which is located closer to the front edge than to the rear edge of the absorbent system.
  • the amount of absorption material may gradually decrease (tapered form), as illustrated in FIGs. 16-18. It is noted that it is also possible to combine a central core system with a uniform distribution with an end core system with a non-uniform distribution or vice versa.
  • FIG. 17 is similar to the embodiment of FIG. 16, with this difference that the middle central core structure 102b is shorter than the left and right central core structures 102a, 102c. More generally, the skilled person understands that the length of the central core structures 102a, 102b, 102c may be adjusted to optimize the absorbance properties.
  • FIG. 21 illustrates an embodiment with an end core system 130 also including first and second end core substrates 135, 136, wherein the first end core structure 132 is disposed between the first and second end core substrates 135, 136.
  • the first end core structure 132 has a first side adjacent to the first end core substrate 135 and a second side adjacent to the second end core substrate 136.
  • the first and second end core substrate 135, 136 can take the form of a "full" C-fold wrap around the first end core structure 132.
  • FIG. 19 illustrates another example embodiment with an end core system 130 including a single end core substrate 135, wherein the end core structure 132 is disposed on the end core substrate 135.
  • the end core substrate 135 is partially wrapping the end core structure 132 so as to form a "partial" C-fold wrap.
  • the end core structures 132, 134 are disposed between two substrates, a first and second end core substrate (not shown). In this manner, the end core structure has a first side adjacent to the first end core substrate and a second side adjacent to the second end core substrate.
  • the integrated absorbent core 20 can have one or more additional absorbent layers, such as, for example, one, two, three or more additional layers, as disclosed above.
  • the present disclosure also involves methods for producing the integrated absorbent core systems 20.
  • methods for producing an absorbent core structure 20 include the steps of forming at least two central absorbent core structures 102 on a forming drum, each structure 102 formed within a separate pocket on the forming drum and separated from each other in a transverse direction, transferring the central absorbent core structures 102 to a first substrate 116 having two transverse edges and two longitudinal edges, aligning a second substrate layer 118 on top of the first substrate 116 and the central absorbent core structures 102, bonding the first substrate layer 116 to the second substrate layer 118 between the two central absorbent core structures and on each side of the absorbent core structures adjacent to the longitudinal edges, such that a central core system 100 is formed, and joining the central core system 100 to an end core system 130, wherein the end core system 130 extends beyond at least one transverse edge of the central core system 100.
  • the structures can be formed, depending on the composition of the structures.
  • the composition includes a pulp material, such as a pulp and SAP mixtures
  • a forming drum can be used to form the structures.
  • Separate pockets for each of the structures can be provided on the forming drum.
  • three pockets are provided on a forming drum for forming the structures.
  • the material can be slit in line to create any desired number of structures 102.
  • airlaid material can be slit in line to create three rectangular strips.
  • the bonds 110 can be provided between the central core structures 102. These bonds 110 provide a seal that keep the central core substrates 102 separate, even when they become wet and pressure is applied (e.g., the wearer is sitting). Bonds 112 can also be provided at the edges of the absorbent core system. When bonds are provided along all of the edges, including the transverse edges, and the bonds between the central core structures extends up to the bonds along the transverse edges, a seal is provided around the entire perimeter of each central core structure.
  • the one or more end core structures 132, 134 are formed separately.
  • the central core absorbent structures 102 there are multiple ways in which the structures can be formed, depending on the composition of the end core structures 132, 134.
  • the composition includes a pulp material, such as a pulp and SAP mixtures
  • a forming drum can be used to form the end core structures 132, 134.
  • Separate pockets for each of the end core structures can be provided on the forming drum. For example, in embodiments having two end core structures, two pockets are provided on a forming drum for forming the structures. In embodiments having one end core structure, as shown in FIG. 6, only one pocket need be provided.
  • the material can be cut to create any desired number of end core structures.
  • the central core system 100 is cut, placed and aligned with the end core system 130 to provide the integrated absorbent core system 20.
  • the end core system 130 includes more than one end core absorbent structure, each of the structures is located at an end of the central core system 100, with the central core system 100 centered between the end core structures 132, 134.
  • the central core system 100 is centered in the middle of the end core structure 132.
  • FIG. 15 A more detailed description of an example process for preparing the integrated absorbent core can be seen in FIG. 15.
  • the process begins with two unwind stations 202 for the substrate materials (e.g., nonwoven wrap and/or acquisition distribution layer (ADL) materials).
  • One unwind will contain the first substrate 116 (e.g., nonwoven, NW) and the other unwind will contain second substrate 118 (e.g., nonwoven or ADL).
  • the first substrate 116 will be routed to the inlet of the "central core” forming drum 200, where the central core structures 102 will be formed on top of it.
  • the second substrate 118 will be routed at the exit of the "central core” forming drum 200 and applied on top of the central core structures 102.
  • adhesive can be applied to one or both substrates, in order to help hold the central core structures 102 in place prior to the substrates 116, 118 being ultrasonically bonded or heat sealed.
  • the central core structures 102 disposed between the two substrates 116, 118 would be passed onto a vacuum transfer roll, which contains debulkers 204 that would apply the right density to the central core structures 102.
  • the central core structures disposed between the two substrates would be placed on a vacuum transfer belt, where it would be transferred into ultrasonic or heat seal unit(s) 206, 208.
  • the ultrasonic or heat seal units would fuse the fibers of the first and second substrates together to form the bonds, for example, in between, at the outer sides and/or the front and back ends of the central core structures, as disclosed above.
  • the first unit 206 may seal the sides and the second unit 208 may seal the ends.
  • the next step will be to cut the two substrates with the central core structures disposed between on a rotary die cutter 210 to form the final central core system 100, transfer the central core system onto a vacuum transfer drum 212 and then place the system on top of the "bottom" absorbent core, or end core system 130.
  • the end core system 130 is formed from one end core structure 132, as shown in FIG. 6, with a pulp and SAP composition.
  • the end core structures are formed on the "bottom core” forming drum 220 with no substrate on top or bottom.
  • a first and/or second end core substrate 135, 136 may be added as in the embodiments of FIGs. 19-21.
  • the end core structure is then transferred onto a vacuum transfer roll, which contains debulkers 222 that would apply the right density to the end core structure.
  • the end core structure is transferred onto another vacuum transfer drum and vacuum transfer belt 224 until it reaches the unit 226 where the central core system 100 is joined to the end core system 130.
  • adhesive may be applied on the central core system 100 and/or on the end core system 130 before joining (not illustrated).
  • the central core structures will be aligned and centered on top of the end core structure and then conveyed to the product assembly process further down the line (not shown).
  • the substrates would be routed to the "bottom core” forming drum 220 as indicated by the dotted lines, instead of the "top core” forming drum 200.
  • the single absorbent core would be formed on top of the first substrate, in the inlet of the forming drum. Then the single absorbent core would be covered on top with the second substrate.
  • the absorbent core disposed between the two substrates would be passed on to a vacuum transfer drum, which contains debulkers that would apply the right density to the single absorbent core.
  • adhesive can be applied to one or both substrates, in order to help hold the absorbent core in place prior to being ultrasonically bonded or heat sealed.
  • the single absorbent core can be routed to the ultrasonic or heat seal unit to bond the substrate (e.g., nonwoven wrap) at each side and ends, completely sealing it. Because separate absorbent core structures will not be used in this case, no bonds need be provided in between the sides.
  • the next step will be to cut the wrapped single absorbent core on a rotary die cutter, transfer it onto a vacuum transfer drum and then convey it to the product assembly process down line (not shown).

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne des systèmes à cœurs absorbants intégrés et leurs procédés de production qui de manière générale, comprennent un système à cœur central et un système à cœur d'extrémité s'étendant au-delà d'au moins une des extrémités du système à cœur central. Le système à cœur central comprend des structures absorbantes agencées entre deux substrats et séparées les unes des autres par des liaisons s'étendant généralement entre les bords transversaux du système à cœur central, telles que des liaisons formées par application d'ultrasons ou de chaleur.
PCT/EP2018/073004 2017-08-25 2018-08-27 Système absorbant intégré pour articles jetables WO2019038451A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020210499A1 (fr) * 2019-04-11 2020-10-15 Manna Pro Products, Llc Couches pour espèces non humaines comprenant un noyau absorbant sectionné
US11459679B2 (en) 2016-09-30 2022-10-04 Advanced Medical Solutions Limited Nonwoven fabric

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012170778A1 (fr) * 2011-06-10 2012-12-13 The Procter & Gamble Company Structure absorbante destinée à des articles absorbants
EP2679209B1 (fr) * 2012-06-28 2015-03-04 The Procter & Gamble Company Articles absorbant avec noyau amélioré
EP2886092A1 (fr) * 2013-12-19 2015-06-24 The Procter and Gamble Company Noyaux absorbants ayant des joints et des zones formant un canal
US20160346136A1 (en) * 2015-05-29 2016-12-01 The Procter & Gamble Company Absorbent articles having channels and wetness indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012170778A1 (fr) * 2011-06-10 2012-12-13 The Procter & Gamble Company Structure absorbante destinée à des articles absorbants
EP2679209B1 (fr) * 2012-06-28 2015-03-04 The Procter & Gamble Company Articles absorbant avec noyau amélioré
EP2886092A1 (fr) * 2013-12-19 2015-06-24 The Procter and Gamble Company Noyaux absorbants ayant des joints et des zones formant un canal
US20160346136A1 (en) * 2015-05-29 2016-12-01 The Procter & Gamble Company Absorbent articles having channels and wetness indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11459679B2 (en) 2016-09-30 2022-10-04 Advanced Medical Solutions Limited Nonwoven fabric
WO2020210499A1 (fr) * 2019-04-11 2020-10-15 Manna Pro Products, Llc Couches pour espèces non humaines comprenant un noyau absorbant sectionné

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