US20100121298A1 - Transfer layer for absorbent article - Google Patents

Transfer layer for absorbent article Download PDF

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Publication number
US20100121298A1
US20100121298A1 US12/291,427 US29142708A US2010121298A1 US 20100121298 A1 US20100121298 A1 US 20100121298A1 US 29142708 A US29142708 A US 29142708A US 2010121298 A1 US2010121298 A1 US 2010121298A1
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US
United States
Prior art keywords
capillaries
formed film
protuberances
dimensional formed
film
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US12/291,427
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English (en)
Inventor
Rickey J. Seyler
Gregory M. Rieker
Andrew J. Peacock
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Tredegar Film Products LLC
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Tredegar Film Products LLC
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 Tredegar Film Products LLC filed Critical Tredegar Film Products LLC
Priority to US12/291,427 priority Critical patent/US20100121298A1/en
Assigned to TREDEGAR FILM PRODUCTS CORPORATION reassignment TREDEGAR FILM PRODUCTS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PEACOCK, ANDREW J., SEYLER, RICKEY J., RIEKER, GREGORY M.
Priority to TW098137383A priority patent/TWI396524B/zh
Priority to KR1020090106526A priority patent/KR101228680B1/ko
Priority to BRPI0904272A priority patent/BRPI0904272B8/pt
Priority to JP2009256395A priority patent/JP5133325B2/ja
Priority to CN200910206760.7A priority patent/CN101732134B/zh
Priority to EP09175468.9A priority patent/EP2184041B1/de
Publication of US20100121298A1 publication Critical patent/US20100121298A1/en
Priority to US13/445,033 priority patent/US8344203B2/en
Abandoned legal-status Critical Current

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    • 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
    • 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
    • A61F13/537—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53708—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
    • A61F13/53713—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the vertical direction
    • 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
    • A61F13/537—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53708—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
    • A61F2013/53721—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
    • 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
    • A61F13/537—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53782—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with holes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24281—Struck out portion type

Definitions

  • the disclosure relates to formed films, more specifically three-dimensional formed films for use as transfer layers in absorbent articles.
  • Absorbent articles are articles that are generally used once or a limited number of times for the temporary collection of bodily fluids. Such articles include diapers, adult incontinent products, feminine hygiene products, bandages and similar articles. In general, these articles have a topsheet, which is positioned adjacent the skin of the user, a backsheet, which is opposite the topsheet and may, in use, be positioned adjacent to the clothes of the wearer, and an absorbent core positioned between the topsheet and the backsheet. In most instances, the topsheet is pervious to the bodily fluids and the backsheet is impervious to such fluids, thus protecting the clothing of the wearer from leaks.
  • the absorbent core is designed to collect and hold the bodily fluids until the article can be disposed of and changed with a fresh article.
  • Transfer layers which are also known in the art as acquisition distribution layers or “ADL”, have been used in absorbent articles. Both nonwoven webs and three-dimensional formed films have found use as transfer layer in the past.
  • a transfer layer is typically positioned between the topsheet and the absorbent core and generally improves the efficiency of the article to absorb and retain fluids.
  • transfer layers have been used to provide void volume, which serves as a temporary reservoir to collect and hold fluids until the fluids can be absorbed by the core.
  • transfer layers have been employed to promote lateral flow of fluids in a direction generally parallel to the plane of the transfer layer, thereby permitting more of the core to be used to absorb fluids. See, for example, U.S. Pat. No. 4,324,247.
  • Transfer layers may also function to prevent or reduce rewet, which is a phenomenon in which fluids are released from the core and find their way back to the surface of the topsheet, thus “re-wetting” the topsheet. Rewet creates an unpleasant damp feeling to the user of the article and is therefore is important to minimize or eliminate.
  • transfer layers have been known to be used to reduce surface wetness on the topsheet by facilitating transfer of static fluids that would otherwise tend to remain on the topsheet surface and again create a damp, unpleasant feeling.
  • the disclosure provides a formed film having a plurality of protrusions depending from said film, said protrusions defined by sidewalls and a bottom surface, a plurality of said protrusions having an aperture located on at least one sidewall.
  • the disclosure provides a formed film having a plurality of protrusions depending from said film, said protrusions defined by sidewalls and a bottom surface, a plurality of said protrusions having an aperture located on at least one sidewall, said film further comprising a plurality of apertured protrusions comprising capillaries.
  • the disclosure provides a formed film having a plurality of protrusions depending from said film, said protrusions defined by sidewalls and a bottom surface, a plurality of said protrusions having an aperture located on at least one sidewall, said film further comprising a plurality of apertured protrusions comprising capillaries, wherein the apertures in said capillaries is spaced further away from a major plane of said film as compared to the bottom surface of said protrusions.
  • FIG. 1 is a cross-sectional view of an absorbent article in accordance with an embodiment of the disclosure.
  • FIG. 2 is a sectioned view of a three-dimensional formed film in accordance with an embodiment, particularly illustrating a plurality of protuberances with an aperture in the sidewall thereof.
  • FIG. 3 is sectioned view of a three-dimensional formed film in accordance with an embodiment, particularly illustrating a plurality of protuberances with apertures in the sidewall and a plurality of capillaries.
  • FIG. 4 is a schematic plan view of an embodiment with protuberances and capillaries.
  • FIG. 5 is a schematic plan view of another embodiment with protuberances and capillaries.
  • FIG. 6 is a cross-section of a multiplanar transfer layer with protuberances and capillaries originating from different planes in the film.
  • FIG. 7 is a schematic plan view of an embodiment of a multiplanar film having protuberances and capillaries originating from different planes in the film.
  • FIG. 8 is a schematic cross-sectional view of a forming screen that can be used to create the transfer films.
  • Absorbent articles generally comprise a topsheet, an absorbent core, and a backsheet.
  • the topsheet is on the body facing side of the absorbent article and typically comprises a liquid pervious material that allows liquid from an insult to transfer from the body-facing surface of the absorbent article to the absorbent core.
  • the term “insult” generally refers to an amount of a liquid or the act of adding a liquid on a topsheet of an absorbent article. An insult may occur during product use and during finished product testing. Consequently, “multiple insults” occur when the same absorbent article is insulted more than once.
  • the topsheet is typically in close proximity or even direct contact with the wearer's skin during use and is typically made of a soft material such as a nonwoven material, an apertured film, or a combination of these materials made into a unitary composite.
  • the topsheet is typically designed to retain a comfortable, dry feel to the wearer even after an insult.
  • the absorbent core absorbs the insult and retains the liquid while the absorbent article is in use.
  • the absorbent core should adequately absorb an insult or multiple insults and substantially retain the insult until the absorbent article is removed and discarded.
  • the storage capacity of the absorbent core and the efficiency of distribution of an insult across the absorbent core determine the amount of liquid that may be held in the absorbent article.
  • the absorbent material in an absorbent core may comprise any liquid absorbent material such as, but not limited to, cellulose materials including fibers, cellular sponge or foam materials, super absorbent materials, such as superabsorbent polymers, hydrocolloidal materials, gel materials and combinations thereof.
  • Particularly useful absorbent materials are high absorbency gel-type materials which are generally capable of absorbing about 10 to about 50 times their weight in fluid.
  • the absorbent material may comprise a mixture of absorbent granular materials and finely chopped cellulose fibers.
  • the backsheet is positioned on the garment facing side or outside surface of the absorbent article.
  • a backsheet may be a liquid impervious film that does not allow liquid to transfer from within the absorbent article to the exterior surface of the absorbent article or to the garment of the wearer.
  • a breathable backsheet is impervious to liquid, yet allows water vapor to pass out of the absorbent article. This lowers the humidity felt by the wearer and to thereby increase the comfort to the wearer.
  • the transfer layers are located between the topsheet and the absorbent core or between the backsheet and the absorbent core.
  • a particular advantage of the transfer layers of this disclosure are the ability to occlude or obstruct a view of the absorbent core through the topsheet particularly when viewed from an angle of approximately 90° relative to the topsheet.
  • An insult may be considered to include a combination of both dynamic and stationary fluid.
  • the dynamic fluid flows through the topsheet and transfer layer at the time of insult while the stationary fluid may be retained within a porosity of the topsheet or transfer layer.
  • a transfer layer must be capable of sustaining z-direction wicking or capillary action.
  • z-direction wicking or capillary action is accomplished by providing at least a portion of the apertures that are sufficiently small in diameter to achieve capillarity or capillary action.
  • Transfer layers in accordance with the embodiments are films or film composites.
  • a “film” refers to a thin polymer sheet or web.
  • a film may be produced, for example, by extruding a molten thermoplastic polymer in a cast or blown extrusion process and may be further processed between rollers and cooled to form the web.
  • Films can be monolayer films, coextruded films, and composite films, for example.
  • Composite films may be produced by a coextrusion process or by bonding one or more films together.
  • Composite films may also be produced with fibers, for example.
  • the transfer layers may be dimensionally described as having a machine direction, a cross direction, and a z-direction.
  • the machine direction is defined by the direction in which the film passes through the manufacturing process.
  • films are produced as long sheets or webs having a much longer length than width.
  • the machine direction is usually the length (also referred to as the x-direction) of the sheet.
  • Perpendicular to the machine direction is the cross direction or transverse direction (also referred to as the y-direction or width) of the sheet.
  • the thickness of the film (sometimes also referred in certain embodiments as loft or caliper of the film) is measured in the z-direction.
  • Three-dimensional formed films include a base plane forming the nominal thickness of the film, and include structures originating on the surface of the film and protruding outwardly in the z-direction.
  • the dimensions of these structures provide the film with a z-direction dimension that is greater than the nominal thickness of the film. They also provide the film with a secondary plane defined by the surface structures and spaced from the base plane of the film in the z-direction.
  • the three-dimensional features of the three-dimensional formed films may be produced in an embossing process, a hydroforming process, or a vacuum forming process, for example. All such processes are well known in the art.
  • a “multiplanar film” is a three-dimensional formed film that has additional surface structures that originate from both the base plane and the secondary plane of the film.
  • a formed film having a multiplanar structure may comprise a plurality of plateaus that are on the surface of the film, the plateaus defining at least one additional plane of the film above or below the base surface.
  • protuberances may be formed on any or all of the available planes.
  • a three-dimensional apertured formed film is simply a formed film that has openings or apertures in the three-dimensional structures.
  • the size, spacing and other properties of the apertured three-dimensional structures are based upon the structure of a forming screen placed between the film and a source of the vacuum, for example, as described in U.S. Pat. No. 4,456,570 and U.S. Pat. No. 3,929,135.
  • the z-direction dimension of the three-dimensional structure is a function of the diameter of the three-dimensional structure, which, in turn, is a function of the diameter of the apertures in the forming screen.
  • smaller diameter structures typically have a smaller z-direction dimension as compared to larger diameter structures.
  • Other factors also contribute to the z-direction height of the three-dimensional features such as film composition, basis weight of the film, temperature of the film while being apertured, as well as other process conditions and apparatus-related factors.
  • the transfer layer may additionally comprise a laminate or composite structure.
  • laminate and “composite” are synonymous and refer to two or more sheet-like members or webs joined together in a surface-to-surface relationship to form a unitary web. Laminates may be formed by coextrusion, or any number of lamination processes, including thermal lamination, adhesive lamination, ultrasonic lamination, pressure lamination, extrusion coating, vacuum lamination and other lamination techniques known in the art, and combinations thereof.
  • the transfer layers are made from polymeric materials which may be homopolymers, copolymers, block, graft, random and alternating copolymers, terpolymers, etc., and blends thereof.
  • polymeric materials may be homopolymers, copolymers, block, graft, random and alternating copolymers, terpolymers, etc., and blends thereof.
  • polymer is meant to include all possible stereochemical configurations of the material, such as isotactic, syndiotactic and random configurations.
  • three-dimensional formed films may comprise at least one polymer selected from polyolefins (e.g., C2-C10 olefins such as polyethylene, polypropylene, etc.); polyesters; plastomers; polyamides (e.g., nylon);polystyrenes; polyurethanes; vinyl polymers; acrylic and/or methacrylic polymers; elastomers (e.g., styrene block copolymer elastomers); polymers from natural renewable sources; biodegradable polymers; and mixtures or blends thereof.
  • the polymer is a thermoplastic polymer.
  • any of a variety of fillers may be added to the polymers and may provide certain desired characteristics, including, but not limited to, roughness, anti-static, abrasion resistance, printability, writeability, opacity, processing aids, sealing aids, UV stabilizers, and color.
  • Such fillers are well known in the industry and include, for example, calcium carbonate (abrasion resistance), titanium dioxide (color and opacity) and silicon dioxide (roughness).
  • absorbent article 10 comprises a topsheet 12 , a core 14 , a backsheet 16 and a transfer layer 15 positioned between the core 14 and topsheet 12 .
  • the article 10 has a body facing surface 13 which, in use, would be placed adjacent to or otherwise in close proximity with the skin of the user.
  • the article 10 also has a garment facing surface 17 which is opposite the body facing surface 13 .
  • the garment facing surface 17 in use, would be in proximity to the garment of the user or to the environment if the absorbent article is a bandage, wound dressing, surgical drape or the like.
  • Topsheet 12 comprises a fluid pervious material to allow fluids to enter the absorbent article 10 .
  • Topsheet 12 is generally an apertured film, such as an apertured formed film, a nonwoven web, or composites.
  • Backsheet 16 is generally fluid impervious to prevent leakage of fluids from the absorbent article. Films, nonwoven webs and composites are typically used for the backsheet.
  • the absorbent core 14 is between the topsheet 12 and the backsheet 16 and comprises materials that can absorb and retain fluids that pass through the topsheet until the article is discarded.
  • FIG. 2 An enlarged schematic side view illustration of an embodiment of a transfer layer 15 is shown in FIG. 2 .
  • the transfer layer 15 is a three-dimensional apertured formed film with a male side 27 and a female side 29 .
  • the transfer layer 15 may be oriented in the absorbent article 10 with either the male side 27 or female side 29 facing the absorbent core 14 .
  • the male side 27 of the transfer layer 15 will face the absorbent core 14 , but in some applications it may be desirable for the female side 29 to face the core.
  • the transfer layer 15 has a plurality of protuberances 20 comprising side walls 21 and a bottom wall 22 .
  • a plurality of the protuberances 20 contain at least one sidewall 21 having an aperture 28 therein.
  • the sidewall 21 is the portion of a three-dimensional feature nominally perpendicular to the principal or base plane of the film and nominally parallel to the z-direction (indicated by arrow “Z” in FIG. 2 ).
  • the bottom wall (also referred to as bottom surface) 22 is substantially unapertured.
  • the placement of the aperture is not exact. Nor is the line of demarcation between the bottom surface and the sidewall always well defined. Accordingly, in practice it may be that a portion of bottom surface is apertured, even if most of the aperture is located in the sidewall. For this reason, when we state that the bottom surface is substantially unapertured, we mean that no more than 10% or 12%, preferably no more than 5%, of the surface area of the bottom surface is occupied by the aperture. Similarly, when we state that the aperture is in the sidewall, we do not mean to imply that the 100% of the open area in the protuberance is in the sidewall portion.
  • the protuberances 20 are generally conical. However, is it to be understood that the shape of the protuberances in embodiments of the transfer layer is not significant. In particular, the protuberances may have a shape that is circular, oval, triangular, square, pentagonal, hexagonal, or any other desired shape.
  • the transfer layers of this disclosure having apertures in the sidewalls of the protuberance, allows for better control and flexibility of the z-direction dimension of the film.
  • the z-direction dimension of the transfer layers is determined by the depth (i.e., thickness) of the forming screen and not by the diameter of the opening in the screen corresponding to the diameter of the protuberance.
  • FIG. 3 Another embodiment of a transfer layer 40 is shown in FIG. 3 .
  • the transfer layer 40 of FIG. 3 comprises a female surface 29 and a plurality of protuberances 20 having sidewalls 21 and bottom wall 22 and apertures 28 in the sidewall 21 .
  • the transfer layer 40 includes a plurality of capillaries 42 originating on the female surface 29 and extending therefrom.
  • Capillaries 42 comprise protuberances having sidewalls 43 and an aperture at the apex 44 of the protuberance.
  • the capillaries 42 promote removal of a static portion of the insult retained within the porosity of the topsheet by providing sustained z-direction wicking or capillary action of fluids that may present in the topsheet. This sustained z-direction wicking is accomplished by providing the capillaries 42 with a diameter that is sufficiently small to achieve capillarity.
  • the apertures 28 of the plurality of larger protuberances 20 may be any desired size.
  • the apertures 28 of certain embodiments may have an average cross sectional area greater than 0.2 mm 2 and an average hydraulic diameter between 0.55 mm to 1.2 mm.
  • the sidewalls 21 are nominally perpendicular to the film base plane and in most instances will be tapered from 0 to 25% measured from perpendicular to the base plane of the film or, in other embodiments, from 0 to 10% taper.
  • the capillaries 42 have an average diameter between 50 microns and 400 microns as measured on the female side of the capillary 42 .
  • the ratio of the hydraulic radius of the protuberances to the capillaries will generally exceed 3:1 and in most cases will be 4 or 5:1 or higher. Ratios of 10:1 or more are also common.
  • the average length of the capillaries 42 is greater than the average length of the protuberances 20 . In other less preferred embodiments, the average length of the plurality of capillaries 42 is substantially the same (i.e., ⁇ 10%) as the average length of the protuberances 20 . In either case, the length of the capillaries 42 should preferably be chosen to provide sustained wicking as discussed above.
  • the transfer layer comprises capillaries 42 and apertured protuberances 20 which are larger than the capillaries 42 to yield a film with substantially uniform z-direction dimensions.
  • the combination of larger protuberances 20 with small capillaries 42 that originate with intimate contact with the topsheet and terminate at the apex 44 in intimate contact to the absorbent core or other intermediate layer allow the film to sustain acquisition and distribution of both dynamic and stationary insult fluids. This property results in significant reduction in residual wetness at the interface with the user's skin.
  • the transfer layer also gives rise to improved masking, or occlusion of a soiled absorbent core.
  • the transfer layer is significantly reduced in thickness compared to conventionally apertured three-dimensional films.
  • FIGS. 4 and 5 are plan views of two embodiments of transfer layers comprising larger diameter protuberances 20 and capillaries 42 .
  • the transfer layer 40 A comprises protuberances 20 which are substantially round in shape alternating with smaller capillaries 42 .
  • the transfer layer 40 B comprises oval or elliptical shaped protuberances 20 with two capillaries 42 separating adjacent protuberances from one another.
  • the transfer layer comprises a multiplanar film 50 having protuberances 20 with bottom surface 22 and sidewalls 21 .
  • An aperture 28 is located in at least one of the sidewalls 21 .
  • the transfer layer 50 includes a plurality of capillaries 42 originating from the same planar surface 51 as the protuberances 20 .
  • transfer layer 50 further includes a raised plateau forming a secondary planar surface 52 that is spaced from planar surface 51 in the z-direction.
  • a plurality of capillaries 53 originate from the secondary planar surface 52 .
  • the planar surface 51 is a continuous planar surface whereas the secondary planar surface 52 is discontinuous.
  • FIG. 7 shows a plan view of a transfer layer of similar embodiment to that of FIG. 6 .
  • the apertured protuberances 20 comprise oval shaped structures.
  • Capillaries 42 originate from the same planar surface 51 as apertured protuberances 20 .
  • a cluster of capillaries 53 are located intermediate the protuberances 20 and capillaries 42 in originate from a secondary planar surface 52 which is a raised plateau relative to the planar surface 51 .
  • the number of capillaries 53 located on any raised plateau, as well as the number of raised plateaus for a given area may be as desired for the particular application.
  • the transfer layer 50 promotes removal of a stationary portion of the insult retained within the porosity of the topsheet, especially a nonwoven topsheet (not shown).
  • the z-direction difference between the planar surface 51 and secondary planar surface 52 may be any height difference that results in increased penetration of planar surface 52 , and thus the female end of capillaries 53 , of with the adjacent layer such as a topsheet.
  • the difference in height of the planar surface 51 and secondary planar surface 52 may be between 25 and 200 microns, or preferably between 50 microns to 125 microns.
  • capillaries 42 and capillaries 53 need terminate in the same plane.
  • the capillaries 42 may have a z-direction depth that terminates above, at, or below the plane formed by the bottom surfaces 22 of the apertured protuberances 20 .
  • the capillaries 53 may have a z-direction depth that terminates above, at, or below the plane formed by the bottom surfaces 22 of the apertured protuberances 20 .
  • a sustainable removal of liquid from a topsheet is generally achieved by intimate contact of the apertured apex of the capillary with an adjacent layer such as the absorbent core (not shown).
  • the capillaries 42 and capillaries 53 will be sized to provide such sustained wicking action.
  • the transfer layers described herein may conveniently be manufactured using a vacuum forming process, as described above.
  • FIG. 8 the profile of a screen used to make the transfer layers is illustrated in schematic cross-section.
  • the screen 60 comprises a body 61 having a top surface 62 and a bottom surface 63 .
  • Screen body 61 is usually made of metal or plastic, but may be of any suitable solid material.
  • a passageway 64 originates in the top surface 62 of screen 60 and extends downwardly toward bottom surface 63 .
  • the bottom of passageway 64 is off-set laterally from the top of the passageway, creating an s-shaped or z-shaped bend 65 in the passageway 64 .
  • the molten polymer When a molten polymer is applied to the top surface 62 of screen 60 and vacuum applied to the bottom surface 63 , the molten polymer will be drawn down into passageway 64 . As the molten polymer film is drawn into passageway 64 , the polymer will conform to the general shape of the passageway, including the s-shaped bend 65 , thus forming a generally horizontal surface that forms the bottom surface 22 of three-dimensional protuberances 20 in FIGS. 2-7 . Upon application of sufficient vacuum, the film will burst, forming an aperture substantially in the sidewall of the protuberance.
  • Screen 60 in the embodiment of FIG. 8 further comprises a second passageway 66 which in the embodiment shown is a substantially straight passageway extending from top surface 62 to bottom surface 63 of screen body 61 .
  • a molten film applied to the top surface 62 will be drawn into the passageway 66 and, if sufficient vacuum is applied, the film will rupture at or near the bottom surface 63 of screen body 61 .
  • passageway 66 will cause the formation of the capillaries, such as capillary 42 of FIGS. 3-7 .
  • Any design or pattern may be formed to produce embodiments of the transfer layer. Any ratio of large three-dimensional features to capillaries may be used. Depending on the applications, more or fewer capillaries may be desired as compared to the embodiments illustrated in the Figures.

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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)
  • Absorbent Articles And Supports Therefor (AREA)
US12/291,427 2008-11-10 2008-11-10 Transfer layer for absorbent article Abandoned US20100121298A1 (en)

Priority Applications (8)

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US12/291,427 US20100121298A1 (en) 2008-11-10 2008-11-10 Transfer layer for absorbent article
TW098137383A TWI396524B (zh) 2008-11-10 2009-11-04 吸收物件之轉移層
KR1020090106526A KR101228680B1 (ko) 2008-11-10 2009-11-05 흡수 물품용 이동층
BRPI0904272A BRPI0904272B8 (pt) 2008-11-10 2009-11-05 Filme formado tridimensional e artigo absorvente
JP2009256395A JP5133325B2 (ja) 2008-11-10 2009-11-09 吸収性物品用の輸送層
CN200910206760.7A CN101732134B (zh) 2008-11-10 2009-11-09 吸收制品的转移层
EP09175468.9A EP2184041B1 (de) 2008-11-10 2009-11-10 Übertragungsschicht für absorbierenden artikel
US13/445,033 US8344203B2 (en) 2008-11-10 2012-04-12 Transfer layer for absorbent article

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Publication number Priority date Publication date Assignee Title
US20110183109A1 (en) * 2010-01-28 2011-07-28 Tredegar Film Products Corporation Transfer layer for absorbent article
US20110184370A1 (en) * 2010-01-28 2011-07-28 Tredegar Film Products Corporation Transfer layer for absorbent article
US8829263B2 (en) 2005-09-07 2014-09-09 Smith & Nephew, Inc. Self contained wound dressing with micropump
WO2015015417A1 (en) * 2013-07-31 2015-02-05 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured liners
WO2015015418A1 (en) * 2013-07-31 2015-02-05 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured surge
US9662246B2 (en) 2012-08-01 2017-05-30 Smith & Nephew Plc Wound dressing and method of treatment
US9877872B2 (en) 2011-07-14 2018-01-30 Smith & Nephew Plc Wound dressing and method of treatment
US10076449B2 (en) 2012-08-01 2018-09-18 Smith & Nephew Plc Wound dressing and method of treatment
US10258517B1 (en) * 2018-05-25 2019-04-16 Tredegar Film Products Corporation Fluid distribution material for absorbent articles
US10335973B2 (en) * 2015-12-11 2019-07-02 Tredegar Film Products Corporation Hydro-formed film with three-dimensional micro-apertures
US10507141B2 (en) 2012-05-23 2019-12-17 Smith & Nephew Plc Apparatuses and methods for negative pressure wound therapy
US10610414B2 (en) 2014-06-18 2020-04-07 Smith & Nephew Plc Wound dressing and method of treatment
US10617575B2 (en) * 2017-03-13 2020-04-14 Tredegar Film Products Corporation Activated composite web for absorptive devices
US11559437B2 (en) 2016-10-28 2023-01-24 Smith & Nephew Plc Multi-layered wound dressing and method of manufacture

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009111655A2 (en) 2008-03-05 2009-09-11 Kcl Licensing Inc. Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site
US8814842B2 (en) 2010-03-16 2014-08-26 Kci Licensing, Inc. Delivery-and-fluid-storage bridges for use with reduced-pressure systems
JP5647833B2 (ja) * 2010-08-31 2015-01-07 大王製紙株式会社 吸収性物品
CN103917208B (zh) 2011-12-09 2017-12-22 Sca卫生用品公司 用于吸收性物品的信号层
WO2013090810A1 (en) 2011-12-16 2013-06-20 Kci Licensing, Inc. Releasable medical drapes
US10940047B2 (en) 2011-12-16 2021-03-09 Kci Licensing, Inc. Sealing systems and methods employing a hybrid switchable drape
TW201424706A (zh) * 2012-09-10 2014-07-01 Tredegar Film Prod Corp 具口孔圖案及多數光阱微坑之多孔形成薄膜
KR20150085837A (ko) 2012-11-16 2015-07-24 케이씨아이 라이센싱 인코포레이티드 패턴 접착층을 구비한 의료용 드레이프 및 그 제조 방법
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WO2015065616A1 (en) 2013-10-30 2015-05-07 Kci Licensing, Inc. Dressing with sealing and retention intereface
EP3821859A1 (de) 2013-10-30 2021-05-19 3M Innovative Properties Co. Verband mit unterschiedlich grossen perforationen
EP3744361A1 (de) 2013-10-30 2020-12-02 KCI Licensing, Inc. Absorbierende leitung und system
EP3257486B1 (de) 2013-10-30 2019-06-05 KCI Licensing, Inc. Kondensatabsorbierendes und -ableitendes system
US11026844B2 (en) 2014-03-03 2021-06-08 Kci Licensing, Inc. Low profile flexible pressure transmission conduit
WO2015188003A1 (en) 2014-06-05 2015-12-10 Kci Licensing, Inc. Dressing with fluid acquisition and distribution characteristics
KR20170071562A (ko) * 2014-10-20 2017-06-23 트레데가르 필름 프로덕츠 코포레이션 액체 분배를 위한 3차원 필름을 갖는 흡수 용품
US11246975B2 (en) 2015-05-08 2022-02-15 Kci Licensing, Inc. Low acuity dressing with integral pump
WO2017040045A1 (en) 2015-09-01 2017-03-09 Kci Licensing, Inc. Dressing with increased apposition force
US10973694B2 (en) 2015-09-17 2021-04-13 Kci Licensing, Inc. Hybrid silicone and acrylic adhesive cover for use with wound treatment
KR102621427B1 (ko) 2016-04-29 2024-01-08 킴벌리-클라크 월드와이드, 인크. 방향성 유체 이송용 표면
US20180110657A1 (en) * 2016-10-26 2018-04-26 Kci Licensing, Inc. Hybrid Drape And Method Of Manufacturing A Hybrid Drape

Citations (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097787A (en) * 1961-09-15 1963-07-16 Olin Mathieson Packaging film
US3945386A (en) * 1972-08-08 1976-03-23 Domtar Limited Disposable diaper
US3967623A (en) * 1975-06-30 1976-07-06 Johnson & Johnson Disposable absorbent pad
US4323069A (en) * 1980-05-12 1982-04-06 The Procter & Gamble Company Disposable absorbent article having an intermediate layer interposed between the topsheet and the absorbent core
US4324247A (en) * 1980-05-12 1982-04-13 The Procter & Gamble Company Disposable absorbent article having an absorbent core and a topsheet
US4626254A (en) * 1984-05-15 1986-12-02 Molnycke Ab Absorbent article
US4637819A (en) * 1985-05-31 1987-01-20 The Procter & Gamble Company Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other
US4726976A (en) * 1986-10-28 1988-02-23 The Kendall Company Composite substrate
US5078710A (en) * 1987-07-30 1992-01-07 Kao Corporation Surface material for sanitary articles
US5158819A (en) * 1990-06-29 1992-10-27 The Procter & Gamble Company Polymeric web exhibiting a soft, silky, cloth-like tactile impression and including a contrasting visually discernible pattern having an embossed appearance on at least one surface thereof
US5171238A (en) * 1989-03-16 1992-12-15 The Transzonic Companies Absorbent pad with fibrous facing sheet
US5342334A (en) * 1993-04-02 1994-08-30 The Procter & Gamble Company Coextruded three-dimensional fluid-pervious plastic web
US5352217A (en) * 1993-09-14 1994-10-04 The Proctor & Gamble Company Absorbent article having multiple topsheets
US5368909A (en) * 1993-04-02 1994-11-29 The Procter & Gamble Company Fluid-pervious plastic web having improved fluid drainage
US5368910A (en) * 1993-04-02 1994-11-29 The Procter & Gamble Company Macroscopically expanded plastic web having improved fluid drainage
US5387209A (en) * 1991-12-04 1995-02-07 Uni-Charm Corporation Body fluid absorbent article
US5439458A (en) * 1991-01-03 1995-08-08 The Procter & Gamble Company Absorbent article having rapid acquiring, multiple layer absorbent core
US5500270A (en) * 1994-03-14 1996-03-19 The Procter & Gamble Company Capillary laminate material
US5509915A (en) * 1991-09-11 1996-04-23 Kimberly-Clark Corporation Thin absorbent article having rapid uptake of liquid
US5603707A (en) * 1995-11-28 1997-02-18 The Procter & Gamble Company Absorbent article having a rewet barrier
US5614283A (en) * 1994-12-22 1997-03-25 Tredegar Industries Absorbent composite with three-dimensional film surface for use in absorbent disposable products
US5643240A (en) * 1993-12-30 1997-07-01 Kimberly-Clark Corporation Apertured film/nonwoven composite for personal care absorbent articles and the like
US5846230A (en) * 1993-06-28 1998-12-08 The Procter & Gamble Co. Absorbent article with means for directional fluid distribution
US6103953A (en) * 1991-12-17 2000-08-15 The Procter & Gamble Company Absorbent article having fused layers
US6247914B1 (en) * 1994-12-30 2001-06-19 Sca Hygiene Products Ab Casing material and a method and apparatus for its manufacture
US20020133132A1 (en) * 2001-02-21 2002-09-19 Copat Marcelo S. Absorbent article with a response surface
US6461716B1 (en) * 1999-06-24 2002-10-08 The Procter & Gamble Company Apertured webs having permanent hydrophilicity and absorbent articles using such webs
US6627791B1 (en) * 1999-04-01 2003-09-30 The Procter & Gamble Company Resilient, three dimensional polymeric film comprising open and closed capillaries, and absorbent article with improved backsheet comprising the film
US20040013852A1 (en) * 1997-02-21 2004-01-22 The Proctor & Gamble Company Tear resistant porous extensible web
US20040116029A1 (en) * 2002-02-14 2004-06-17 Kelly William G.F. Two layer structure for absorbent articles
US20050064136A1 (en) * 2003-08-07 2005-03-24 Turner Robert Haines Apertured film
US20050118393A1 (en) * 2002-01-18 2005-06-02 Corcoran Craig S. Sheet having microsized architecture
US6911573B2 (en) * 1997-03-21 2005-06-28 Kimberly-Clark Worldwide, Inc. Dual-zoned absorbent webs
US20050256475A1 (en) * 2004-04-27 2005-11-17 Uni-Charm Corporation Absorbent article
US20050261649A1 (en) * 2004-05-19 2005-11-24 Cohen Richmond R Absorbent article with layered acquisition/distribution system
US20100069867A1 (en) * 2006-12-12 2010-03-18 Uni-Charm Corporation Composite sheet and absorbent article using the composite sheet
US7722588B1 (en) * 1999-06-30 2010-05-25 Mcneil-Ppc, Inc. Multilayered apertured film wrapping element for absorbent articles

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929135A (en) 1974-12-20 1975-12-30 Procter & Gamble Absorptive structure having tapered capillaries
US4456570A (en) 1982-07-26 1984-06-26 Ethyl Corporation Treatment of perforated film
DE3685277D1 (de) * 1985-09-20 1992-06-17 Uni Charm Corp Vorrichtung und verfahren zur herstellung von durchbrochenen vliesstoffen.
JPH0775616B2 (ja) * 1987-07-30 1995-08-16 花王株式会社 衛生用品の表面材
CN2197030Y (zh) * 1994-05-04 1995-05-17 黄辽东 一种具有导流槽的多孔薄膜布
US5998696A (en) * 1995-09-06 1999-12-07 The Procter & Gamble Company Sanitary articles with multi aperture size film topsheets
EP0804917A1 (de) * 1996-04-29 1997-11-05 The Procter & Gamble Company Saugfähiger Wegwerfartikel, mit eine mit Einschnitten und Perforationen ausgestattete absorbierende Struktur, und mit der Fähigkeit seine Form zu ändern während der Verwendung
US6175056B1 (en) 1996-04-29 2001-01-16 The Procter & Gamble Company Disposable absorbent article having an expanding topsheet and being capable of self-shaping in use
JP2971417B2 (ja) * 1997-07-22 1999-11-08 ユニ・チャーム株式会社 衛生物品用表面シート
SE9801038L (sv) 1998-03-27 1999-09-28 Sca Hygiene Prod Ab Materiallaminat för användning som ytskikt på absorberande alster
EP0934735A1 (de) * 1998-02-04 1999-08-11 The Procter & Gamble Company Atmungsaktive doppelschichtig ausgeführte unter Schicht für absorbierende Wegwerfartikel, deren eine Schicht mit schräg ausgeführten Kapilarperforationen vorgesehen ist
EP0934736A1 (de) * 1998-02-04 1999-08-11 The Procter & Gamble Company Mit schräg ausgeführten Kapilarperforationen vorgesehene atmungsaktive untere Schicht für absorbierende Wegwerfartikel
EP0934737A1 (de) 1998-02-05 1999-08-11 The Procter & Gamble Company Deckschicht mit Maskierungseigenschaften für absorbierende Artikel
CN2598540Y (zh) * 2003-01-28 2004-01-14 谢道平 一种薄膜
JP2005296480A (ja) 2004-04-15 2005-10-27 Uni Charm Corp 生理用ナプキン
US7518032B2 (en) * 2006-11-14 2009-04-14 Tredegar Film Products Corporation Three-dimensional apertured film for transmitting dynamically-deposited and statically-retained fluids

Patent Citations (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097787A (en) * 1961-09-15 1963-07-16 Olin Mathieson Packaging film
US3945386A (en) * 1972-08-08 1976-03-23 Domtar Limited Disposable diaper
US3967623A (en) * 1975-06-30 1976-07-06 Johnson & Johnson Disposable absorbent pad
US4323069A (en) * 1980-05-12 1982-04-06 The Procter & Gamble Company Disposable absorbent article having an intermediate layer interposed between the topsheet and the absorbent core
US4324247A (en) * 1980-05-12 1982-04-13 The Procter & Gamble Company Disposable absorbent article having an absorbent core and a topsheet
US4626254A (en) * 1984-05-15 1986-12-02 Molnycke Ab Absorbent article
US4637819A (en) * 1985-05-31 1987-01-20 The Procter & Gamble Company Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other
US4726976A (en) * 1986-10-28 1988-02-23 The Kendall Company Composite substrate
US5078710A (en) * 1987-07-30 1992-01-07 Kao Corporation Surface material for sanitary articles
US5171238A (en) * 1989-03-16 1992-12-15 The Transzonic Companies Absorbent pad with fibrous facing sheet
US5158819A (en) * 1990-06-29 1992-10-27 The Procter & Gamble Company Polymeric web exhibiting a soft, silky, cloth-like tactile impression and including a contrasting visually discernible pattern having an embossed appearance on at least one surface thereof
US5439458A (en) * 1991-01-03 1995-08-08 The Procter & Gamble Company Absorbent article having rapid acquiring, multiple layer absorbent core
US5509915A (en) * 1991-09-11 1996-04-23 Kimberly-Clark Corporation Thin absorbent article having rapid uptake of liquid
US5387209A (en) * 1991-12-04 1995-02-07 Uni-Charm Corporation Body fluid absorbent article
US6103953A (en) * 1991-12-17 2000-08-15 The Procter & Gamble Company Absorbent article having fused layers
US5368910A (en) * 1993-04-02 1994-11-29 The Procter & Gamble Company Macroscopically expanded plastic web having improved fluid drainage
US5368909A (en) * 1993-04-02 1994-11-29 The Procter & Gamble Company Fluid-pervious plastic web having improved fluid drainage
US5342334A (en) * 1993-04-02 1994-08-30 The Procter & Gamble Company Coextruded three-dimensional fluid-pervious plastic web
US5846230A (en) * 1993-06-28 1998-12-08 The Procter & Gamble Co. Absorbent article with means for directional fluid distribution
US5352217A (en) * 1993-09-14 1994-10-04 The Proctor & Gamble Company Absorbent article having multiple topsheets
US5643240A (en) * 1993-12-30 1997-07-01 Kimberly-Clark Corporation Apertured film/nonwoven composite for personal care absorbent articles and the like
US5500270A (en) * 1994-03-14 1996-03-19 The Procter & Gamble Company Capillary laminate material
US5614283A (en) * 1994-12-22 1997-03-25 Tredegar Industries Absorbent composite with three-dimensional film surface for use in absorbent disposable products
US6247914B1 (en) * 1994-12-30 2001-06-19 Sca Hygiene Products Ab Casing material and a method and apparatus for its manufacture
US5603707A (en) * 1995-11-28 1997-02-18 The Procter & Gamble Company Absorbent article having a rewet barrier
US20040013852A1 (en) * 1997-02-21 2004-01-22 The Proctor & Gamble Company Tear resistant porous extensible web
US6911573B2 (en) * 1997-03-21 2005-06-28 Kimberly-Clark Worldwide, Inc. Dual-zoned absorbent webs
US6627791B1 (en) * 1999-04-01 2003-09-30 The Procter & Gamble Company Resilient, three dimensional polymeric film comprising open and closed capillaries, and absorbent article with improved backsheet comprising the film
US6461716B1 (en) * 1999-06-24 2002-10-08 The Procter & Gamble Company Apertured webs having permanent hydrophilicity and absorbent articles using such webs
US7722588B1 (en) * 1999-06-30 2010-05-25 Mcneil-Ppc, Inc. Multilayered apertured film wrapping element for absorbent articles
US20020133132A1 (en) * 2001-02-21 2002-09-19 Copat Marcelo S. Absorbent article with a response surface
US20050118393A1 (en) * 2002-01-18 2005-06-02 Corcoran Craig S. Sheet having microsized architecture
US20040116029A1 (en) * 2002-02-14 2004-06-17 Kelly William G.F. Two layer structure for absorbent articles
US20050064136A1 (en) * 2003-08-07 2005-03-24 Turner Robert Haines Apertured film
US20050256475A1 (en) * 2004-04-27 2005-11-17 Uni-Charm Corporation Absorbent article
US20050261649A1 (en) * 2004-05-19 2005-11-24 Cohen Richmond R Absorbent article with layered acquisition/distribution system
US20100069867A1 (en) * 2006-12-12 2010-03-18 Uni-Charm Corporation Composite sheet and absorbent article using the composite sheet

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11278658B2 (en) 2005-09-07 2022-03-22 Smith & Nephew, Inc. Self contained wound dressing with micropump
US8829263B2 (en) 2005-09-07 2014-09-09 Smith & Nephew, Inc. Self contained wound dressing with micropump
US11737925B2 (en) 2005-09-07 2023-08-29 Smith & Nephew, Inc. Self contained wound dressing with micropump
US10201644B2 (en) 2005-09-07 2019-02-12 Smith & Nephew, Inc. Self contained wound dressing with micropump
US20110184370A1 (en) * 2010-01-28 2011-07-28 Tredegar Film Products Corporation Transfer layer for absorbent article
US8383227B2 (en) * 2010-01-28 2013-02-26 Tredegar Film Products Corporation Transfer layer for absorbent article
US20130158496A1 (en) * 2010-01-28 2013-06-20 Tredegar Film Products Corporation Transfer Layer For Absorbent Article
US8581020B2 (en) * 2010-01-28 2013-11-12 Tredegar Film Products Corporation Transfer layer for absorbent article
US8765250B2 (en) * 2010-01-28 2014-07-01 Tredegar Film Products Corporation Transfer layer for absorbent article
US20110183109A1 (en) * 2010-01-28 2011-07-28 Tredegar Film Products Corporation Transfer layer for absorbent article
US9554950B2 (en) 2010-01-28 2017-01-31 Tredegar Film Products Corporation Transfer layer for absorbent article
US10231874B2 (en) 2010-11-08 2019-03-19 Smith & Nephew Plc Wound dressing and method of treatment
US10039673B2 (en) 2011-07-14 2018-08-07 Smith & Nephew Plc Wound dressing and method of treatment
US10130519B2 (en) 2011-07-14 2018-11-20 Smith & Nephew Plc Wound dressing and method of treatment
US9877872B2 (en) 2011-07-14 2018-01-30 Smith & Nephew Plc Wound dressing and method of treatment
US11510819B2 (en) 2011-07-14 2022-11-29 Smith & Nephew Plc Wound dressing and method of treatment
USRE48535E1 (en) 2011-07-14 2021-04-27 Smith & Nephew Plc Wound dressing and method of treatment
US10507141B2 (en) 2012-05-23 2019-12-17 Smith & Nephew Plc Apparatuses and methods for negative pressure wound therapy
US11590029B2 (en) 2012-05-23 2023-02-28 Smith & Nephew Plc Apparatuses and methods for negative pressure wound therapy
USD914887S1 (en) 2012-08-01 2021-03-30 Smith & Nephew Plc Wound dressing
US10667955B2 (en) 2012-08-01 2020-06-02 Smith & Nephew Plc Wound dressing and method of treatment
US11864981B2 (en) 2012-08-01 2024-01-09 Smith & Nephew Plc Wound dressing and method of treatment
US11801338B2 (en) 2012-08-01 2023-10-31 Smith & Nephew Plc Wound dressing and method of treatment
US9662246B2 (en) 2012-08-01 2017-05-30 Smith & Nephew Plc Wound dressing and method of treatment
US10076449B2 (en) 2012-08-01 2018-09-18 Smith & Nephew Plc Wound dressing and method of treatment
US10238553B2 (en) 2013-07-31 2019-03-26 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured surge
WO2015015418A1 (en) * 2013-07-31 2015-02-05 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured surge
US10258516B2 (en) 2013-07-31 2019-04-16 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured liners
WO2015015417A1 (en) * 2013-07-31 2015-02-05 Kimberly-Clark Worldwide, Inc. Treated three-dimensional apertured liners
US11596552B2 (en) 2014-06-18 2023-03-07 Smith & Nephew Plc Wound dressing and method of treatment
US10610414B2 (en) 2014-06-18 2020-04-07 Smith & Nephew Plc Wound dressing and method of treatment
US10618191B2 (en) 2015-12-11 2020-04-14 Tredgar Film Products Corporation Hydro-formed film with three-dimensional micro-apertures
US10335973B2 (en) * 2015-12-11 2019-07-02 Tredegar Film Products Corporation Hydro-formed film with three-dimensional micro-apertures
US11559437B2 (en) 2016-10-28 2023-01-24 Smith & Nephew Plc Multi-layered wound dressing and method of manufacture
US11083641B2 (en) 2017-03-13 2021-08-10 Fitesa Film Products Llc Method of manufacturing an activated composite web and an activated composite web for absorptive devices
US10617575B2 (en) * 2017-03-13 2020-04-14 Tredegar Film Products Corporation Activated composite web for absorptive devices
US11160697B2 (en) 2018-05-25 2021-11-02 Fitesa Film Products Llc Fluid distribution material for absorbent articles
US10258517B1 (en) * 2018-05-25 2019-04-16 Tredegar Film Products Corporation Fluid distribution material for absorbent articles
US10500108B1 (en) 2018-05-25 2019-12-10 Tredegar Film Products Corporation Fluid distribution material for absorbent articles

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TWI396524B (zh) 2013-05-21
BRPI0904272B1 (pt) 2019-06-18
US8344203B2 (en) 2013-01-01
JP5133325B2 (ja) 2013-01-30
BRPI0904272A2 (pt) 2010-12-21
KR101228680B1 (ko) 2013-01-31
EP2184041A2 (de) 2010-05-12
CN101732134B (zh) 2014-07-09
TW201021772A (en) 2010-06-16
BRPI0904272B8 (pt) 2023-02-14
KR20100052410A (ko) 2010-05-19
JP2010148861A (ja) 2010-07-08
EP2184041A3 (de) 2011-08-24
US20120237722A1 (en) 2012-09-20
CN101732134A (zh) 2010-06-16
EP2184041B1 (de) 2021-01-06

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