WO2003045298A1 - Wearable disposable article having a wetness sensation member - Google Patents
Wearable disposable article having a wetness sensation member Download PDFInfo
- Publication number
- WO2003045298A1 WO2003045298A1 PCT/US2002/036587 US0236587W WO03045298A1 WO 2003045298 A1 WO2003045298 A1 WO 2003045298A1 US 0236587 W US0236587 W US 0236587W WO 03045298 A1 WO03045298 A1 WO 03045298A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wetness sensation
- topsheet
- absorbent article
- sensation member
- wearer
- Prior art date
Links
Classifications
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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
- A61F13/45—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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
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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
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention 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
- A61F13/45—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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity
-
- 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
- A61F13/53704—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 an inhibiting function on liquid propagation
-
- 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
- A61F13/53717—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 horizontal direction
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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
- 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
- A61F13/53743—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 characterised by the position of the layer relative to the other layers
- A61F13/53747—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 characterised by the position of the layer relative to the other layers the layer is facing the topsheet
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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
- A61F13/56—Supporting or fastening means
- A61F13/66—Garments, holders or supports not integral with absorbent pads
- A61F13/82—Garments, holders or supports not integral with absorbent pads with means for attaching to the body
-
- 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
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
-
- 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
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
- A61F2013/425—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm being also a toilet training aid
Definitions
- This invention is directed to hygienic absorbent articles, such as diapers, training pants and the like. Particularly, the invention is directed to training pants facilitating the toilet training process.
- Absorbent articles are well known in the art. These articles typically have an absorbent core held or positioned in proximity to the body of a wearer during use by a fastening system in order to capture and absorb bodily exudates discharged from the wearer.
- Typical absorbent articles include a topsheet facing the wearer, which permits fluid exudates to pass through, and a backsheet, which prevents the exudates from escaping from the absorbent article.
- Disposable absorbent articles such as diapers are designed to absorb and contain bodily waste in order to prevent soiling of the body and clothing of the wearer.
- the disposable diapers typically comprise a single design available in different sizes to fit a variety of wearers ranging from newborns to toddlers undergoing toilet training.
- the design of the diaper typically affects performance, such as, ability to absorb and contain bodily waste.
- the size of the diaper typically affects fit, for example, the size of the diaper waist opening, the size of the openings around the thighs, and the length or "pitch" of the diaper.
- the toilet training stage may be referred to as the "point of exit” as toddlers typically leave the product category once training is successfully completed.
- the age at which children are toilet trained in "developed” countries has increased steadily over the past several decades and is now in the range of about 24-48 months.
- One reason toilet training has become delayed is due to significant technical improvements in diaper dryness and comfort. In modern diapers, the child has dry skin even after one or more urinations. As a result, the child feels little or no discomfort and often may not even be aware that they have urinated.
- a wearable article that can facilitate toilet training by enhancing a wearer's awareness that urination has occurred while at the same time providing the protection of an absorbent article, preventing soiling of the wearer's clothing and surroundings.
- a wearable article providing an effective signal of urination by ensuring that the wearer feels an uncomfortable wetness sensation resulting from urination.
- a wearable article such as an absorbent article
- a wetness sensation member held in close contact with a wearer's skin during use that enhances the wearer's awareness that a discharge of bodily exudates, such as urine, has occurred.
- the wetness sensation member comprises a permeable layer and an impermeable layer disposed in a face-to-face arrangement with the permeable layer.
- the wetness sensation member is typically in proximity to the wearer's urethra so that once the wearer urinates wetting an area of the wetness sensation member, the urine penetrates through the thickness of the permeable layer in the z-direction to the impermeable layer which provides a path of least resistance supporting the flow of urine in the x-y plane. This enables the urine to wet a large area of the wetness sensation member before being absorbed into the absorbent core.
- the wetness sensation member is held in contact with the wearer's skin during use thereby enhancing the wearer's awareness that urination has occurred.
- Figure 1 is a plan view of a disposable diaper.
- Figure 2 is a cross sectional view of a wetness sensation member according to the present invention.
- Figure 3 a is a plan view of a diaper having a wetness sensation member disposed on a body-facing surface.
- Figure 3b is a cross sectional view of the diaper shown in Figure 3a illustrating the layers of the wetness sensation member.
- Figure 4 is an isometric view of a pull-on diaper illustrating the attachment of the wetness sensation member.
- Figure 5a is a plan view of a diaper having a wetness sensation member integrated with the topsheet.
- Figure 5b is a cross sectional view of the diaper illustrated in Figure 5 a.
- Figure 6a is a plan view of a diaper having two wetness sensation members integrated with the topsheet and disposed parallel to and spaced apart from the longitudinal axis with an elongated slit opening interposed therebetween.
- Figure 6b is a cross sectional view of the diaper illustrated in Figure 6a.
- Figure 7a is a plan view of a diaper having a Z-folded topsheet with two wetness sensation members integrated with the topsheet and disposed in the Z-folds in the topsheet.
- Figure 7b is a cross sectional view of the diaper illustrated in Figure 7a.
- Figure 8 a is a plan view of a diaper with barrier leg cuffs including wetness sensation members integrated with the leg cuffs.
- Figure 8b is a cross sectional view of the diaper illustrated in Figure 8a.
- the present invention provides a wearable article having a wetness sensation member that increases a wearer's awareness that urination has occurred by causing the urine discharged from the body of the wearer to wet an effective area of the member held in close contact with the wearer's skin during use.
- the wetness sensation member is equally applicable to wearable articles such as disposable absorbent articles including training pants, incontinence briefs, incontinence undergarments, absorbent inserts, diaper holders and liners, feminine hygiene garments, and the like.
- One embodiment of an absorbent article of the present invention is a unitary disposable absorbent article, such as the disposable diaper 20, shown in Figure 1. However, preferably, the present invention is applicable to disposable training pants and pull-on diapers designed to facilitate toilet training.
- “Absorbent article” refers to devices that absorb and contain liquid, 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 exudates discharged from the body.
- Longitudinal is a direction running parallel to the maximum linear dimension of the article and includes directions within ⁇ 45° of the longitudinal direction.
- the "lateral” or “transverse” direction is orthogonal to the longitudinal direction.
- the "z-direction" is orthogonal to both the longitudinal and transverse directions.
- the "x-y plane refers to the plane congruent with the longitudinal and transverse directions.
- absorbent articles that generally are not intended to be laundered or otherwise restored or reused as an absorbent article (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).
- disposed is used to mean that an element(s) is formed (joined and positioned) in a particular place or position as a unitary structure with other elements or as a separate element joined to another element.
- joind encompasses configurations whereby an element is directly secured to another element by affixing the element directly to the other element, and configurations whereby an element is indirectly secured to another element by affixing the element to intermediate member(s) which in turn are affixed to the other element.
- a "unitary" absorbent article refers to absorbent articles which are formed of separate parts united together to form a coordinated entity so that they do not require separate manipulative parts like a separate holder and liner.
- the term "diaper” refers to an absorbent article generally worn by infants and incontinent persons about the lower torso.
- the term "impermeable” generally refers to articles and/or elements that are not penetrative by fluid in the liquid sate through the entire Z-directional thickness of the article under pressure of 0.14 lb/in 2 or less.
- the impermeable article or element is not penetrative by fluid in the liquid state under pressures of 0.5 lb/in 2 or less. More preferably, the impermeable article or element is not penetrative by fluid in the liquid state under pressures of 1.0 lb/in 2 or less.
- Figure 1 is a plan view of the diaper 20 in its flat out, uncontracted state (i.e., without elastic induced contraction) with portions of the structure being cut away to more clearly show the underlying structure of the diaper 20 and with the portion of the diaper 20 which contacts the wearer facing the viewer.
- the diaper 20 includes a longitudinal axis 42 and a transverse axis 44.
- One end portion 36 of the diaper 20 is configured as a first waist region of the diaper 20.
- the opposite end portion 38 is configured as a second waist region of the diaper 20.
- An intermediate portion 37 of the diaper 20 is configured as a crotch region, which extends longitudinally between the first and second waist regions 36 and 38.
- the waist regions 36 and 38 generally comprise those portions of the diaper 20 which, when worn, encircle the waist of the wearer.
- the waist regions 36 and 38 may include elastic elements such that they gather about the waist of the wearer to provide improved fit and containment.
- the crotch region 37 is that portion of the diaper 20 which, when the diaper 20 is worn, is generally positioned between the legs of the wearer.
- the diaper 20 preferably comprises a liquid pervious topsheet 24, a liquid impervious backsheet 26, and an absorbent core 28 encased between the topsheet 24 and the backsheet 26.
- the topsheet 24 may be fully or partially elasticated or may be foreshortened so as to provide a void space between the topsheet 24 and the core 28.
- Exemplary structures including elasticized or foreshortened topsheets are described in more detail in U.S. Pat. No. 4,892,536 issued to DesMarais et al. on January 9, 1990 entitled “Absorbent Article Having Elastic Strands"; U.S. Pat. No. 4,990,147 issued to Freeland on February 5, 1991 entitled “Absorbent Article With Elastic Liner For Waste Material Isolation"; U.S. Pat. No.
- the diaper 20 may include a fastener such as a hook and loop type fastening system 40 including at least one engaging component (male fastening component) and at least one landing zone (female fastening component).
- the diaper 20 may also include such other features as are known in the art including leg cuffs, front and rear ear panels, waist cap features, elastics and the like to provide better fit, containment and aesthetic characteristics. Such additional features are well known in the art and are described in U.S. Pat. No. 3,860,003; and U.S. Patent No. 5,151,092, which are incorporated by reference herein.
- the present invention may be suitable for other diaper embodiments including those disclosed in U.S. Patent No.
- the wetness sensation member 50 comprises a permeable layer 52 and an impermeable layer 54 disposed opposite the permeable layer 52.
- the impermeable layer is preferably impermeable to fluid in the liquid state but permeable to vapor so that it is breathable.
- the wetness sensation member 50 according to the present invention preferably comprises a permeable body-facing layer (upper layer) and an impermeable layer (lower layer) opposite the body facing layer.
- the permeable layer 52 allows urine to penetrate in the z- direction and also provides a medium for the flow of urine in the x-y plane via wicking.
- the impermeable layer supports the flow of liquid between the permeable and impermeable layers and retains the liquid thereby expanding the wetted area of the wetness sensation member, which is held in as intimate and continuous contact as possible with the wearer's skin.
- the combination of penetration and flow enables the urine to spread out and effectively wet a large area before being absorbed into the core, which in turn maximizes the wetness signal experienced by the wearer.
- Exemplary permeable layers suitable for use in the wetness sensation members of the present invention include nonwovens, foams, woven materials, etc.
- the permeable layer is preferably hydrophilic and capable of retaining at least 4-12 g/g urine against gravity.
- Exemplary impermeable layers suitable for use in the wetness sensation members of the present invention include polyolefinic films, microporous or breathable films, other films, and hydrophobic nonwovens having a hydrohead greater than about 0.14 lb/in 2 .
- Suitable hydrophobic nonwovens include SM (spunbond meltblown), SMS (spunbond meltblown spunbond), and SMMS (spunbond meltblown meltblown spunbond) composites.
- the benefits of the wetness sensation member can be shown by comparison of the strikethrough time for a given sample of temperature sensation member and a topsheet material.
- Strikethrough is the time required for a given volume of surface applied liquid to enter a given material into an underlying absorbent core.
- the testing is performed according to Topsheet Strikethrough Time Test provided. The testing was performed comparing a wetness sensation member composed of a 18 g/m spunbond nonwoven laminated to a 20 g/m SMMS nonwoven via 6 g/m adhesive to a topsheet material composed of 18 gsm Spunbond nonwoven.
- the results of the testing revealed the wetness sensation member to have a strikethrough time on the average about 3.4 times the strikethrough time of the topsheet material. The results of the testing are illustrated in the table below. Strikethrough Test
- test solution used in the strikethrough/rewet test sequence is a characteristic of the lot of Eaton-Dikeman #939 filter paper being used.
- the total volume of test solution to be used for the strikethrough/rewet sequence will be specified in terms of an "X-loading" factor, which represents the ml of test solution to be used per g of filter paper stack weight.
- topsheet sample to be tested on a previously weighted 4 in. x 4 in. three sheet filter paper stack with the side of the topsheet, which will be next to the baby facing up.
- Plexiglas base plate and strikethrough plate must be dried between tests with a Bounty towel.
- the timer With the strikethrough/rewet apparatus timer power ON, the timer set to zero, and the wires connected to the strikethrough plate, start the test measurement by suddenly opening the funnel stopcock and discharging the 5.0 ml into the strikethrough plate sample cavity.
- the initial liquid discharge will start the timer and after the liquid has emptied from the cavity, the timer will shut off. After the timer has shut off, record the strikethrough time to the nearest 0.01-second. Do not remove the strikethrough plate, sample pad, etc. from under the separatory funnel. Close the separatory stopcock.
- the ability of wetness sensation member to support the flow of liquid in the x-y plane can be measured by its wicking capability.
- the wicking capability of the wetness sensation member was measured according to INDA Standard test: 1ST 10.1 (95) Paragraph 10. Liquid Wicking Rate. The test is the measure of the time in seconds for liquid to wick vertically 1.0 inch. The results of the test, summarized in the table below, reveal that wetness sensation member can support vertical wicking of 1.0 inch in an average time of 6.8 seconds whereas the topsheet material was incapable of reaching the 1.0-inch level of vertical wicking.
- the wetness sensation member according to the present invention may be arranged in an absorbent article in a variety of configurations.
- absorbent articles may include a single wetness sensation member or a plurality of wetness sensation members.
- the wetness sensation member(s) are preferably a part of, or attached to, an element or web, such as a topsheet, which is reliably held against the skin of the wearer.
- the wetness sensation member(s) are preferably positioned within the absorbent article to enhance the likelihood of being wetted with urine.
- FIG. 3a and 3b An exemplary embodiment of a wetness sensation member 50 disposed with the topsheet 24 is illustrated in Figures 3a and 3b.
- the wetness sensation member 50 comprises a separate composite member attached to the topsheet 24.
- the wetness sensation member 50 comprises a permeable body-facing layer 52, and impermeable layer 54 opposite the body-facing layer.
- the wetness sensation member 50 is preferably configured and assembled to enhance the likelihood of making contact with the wearer's skin during use.
- the impermeable layer 54 of the wetness sensation member 50 may be bonded to the topsheet 24 using adhesives, ultrasonic bonds, radio frequency bonds, or other suitable means while either the topsheet 24 or the wetness sensation member 50 is elastically foreshortened to deflect the member 50 towards the wearer's skin.
- a wetness sensation member 50 comprising a separate composite member is disposed on the topsheet 24 of a pull-on type diaper.
- the wetness sensation member 50 has elastic properties and includes a first longitudinal end 70 attached to the first waist region 36 and a second longitudinal end 72 attached to the second waist region 38.
- a center portion 74 of the member 50 is preferably attached to the crotch region 37 of the diaper 20 in order to stabilize the member and facilitate fitting the article to the wearer, prevent interference with bowel movements and ensure good contact with the wearer's skin.
- the impermeable layer 54 of the wetness sensation member 50 is attached to the inner surface of the topsheet 24 such that at least a portion of the topsheet 24 forms the permeable layer 52 of the wetness sensation member 50.
- the topsheet 24 is preferably elastically foreshortened to deflect the wetness sensation member 50 into contact with the wearer's skin.
- this embodiment may include a topsheet that is shorter in length than the backsheet, having the longitudinal ends of the topsheet contiguous with the longitudinal ends of the backsheet so that as the diaper is fitted around the wearer, the topsheet is forced into contact with the wearer's skin.
- the position and/or structure of the wetness sensation member 50 should enable the member to be wetted with urine and thereafter held in contact with the wearer's skin.
- the wetness sensation member is preferably disposed in at least a portion of the crotch region 37 of the diaper 20, centered about the longitudinal centerline 42.
- the wetness sensation member 50 may extend over a portion of the disposable absorbent article spanning less than one half of the length of the article or else extend a substantial part of the article spanning more than one half the length of the article.
- the wetness sensation member 50 is preferably coordinated with the wearer's urethra in order to cover the area in which urine initiates contact with the disposable absorbent article.
- Absorbent articles according to the present invention may include a plurality of wetness sensation members disposed on the body-facing surface of the article.
- An example of an embodiment providing a plurality of wetness sensation members is shown in Figures 6a and 6b.
- Two impermeable layers 54a, 54b are attached to the bottom surface of the topsheet 24 forming two wetness sensation members 50a, 50b.
- the impermeable layers 54a, 54b are disposed between the topsheet and the absorbent core 28 so that the topsheet forms the permeable layers 52 of the wetness sensation members.
- the two impermeable layers 54a, 54b are disposed parallel to and spaced apart from the longitudinal centerline 42 of the diaper 20.
- the spacing is determined to allow enough liquid to pass through to the core so as to prevent flooding that can result in leakage of the absorbent article during urination, while at the same time enable enough liquid to flow and wick towards the impermeable layers forming the wetness sensation members.
- the spacing between the impermeable layers can be about 10 mm but can range from about 5 mm to about 15 mm and from about 8 mm and to about 12 mm.
- the impermeable layers 54a, 54b are attached to the lower side of the topsheet 24 using adhesives, ultrasonic bonds, radio frequency bonds, or other suitable means.
- the attachment can comprise bonds covering the entire interface between the impermeable layers and the topsheet, spot bonds or bonds along the longitudinal and transverse edges of the impermeable layers.
- the spacing of the impermeable layers provide room for an elongated slit opening 80 in the topsheet 24.
- the elongated slit opening 80 is adapted to receive feces from the wearer and isolate the same from the wearer's skin.
- the slit opening 80 is preferably interposed between the wetness sensation members 50a, 50b along the longitudinal centerline 42 of the diaper 20.
- Elasticized regions 82 located adjacent to the slit opening 80 maintain alignment of the slit opening 80 with the wearer's anus during use.
- the elasticized regions 82 may also deflect the wetness sensation members 50a, 50b towards the wearer's skin to maintain contact therewith during use.
- Exemplary elasticized topsheets including elongated slit openings are disclosed in U.S. Patent Application Number 09/694,751, which is incorporated herein by reference.
- the impermeable layers 54a, 54b of the wetness sensation members 50a, 50b may be elastically foreshortened to provide benefits of the elasticized regions 82 disposed in the topsheet 24.
- the topsheet 24 forms the permeable layer 52 similar to the previous embodiment, however, the impermeable layers 54a, 54b are disposed in two parallel Z-folds 90 formed in the topsheet 24 along the longitudinal length of the diaper 20.
- the Z-folded topsheet may be attached to the underlying layers along the longitudinal edges of the topsheet 24 allowing the portion between the Z-folds of the topsheet 24 to float freely.
- Elastic elements 92 are disposed along the impermeable layers 54a, 54b in order to deflect the center portion of the Z-folded topsheet outward away from the absorbent core 28.
- the elastic elements 92 may be disposed along the outer edges of the impermeable layers 54a, 54b as shown in Figure 7b, or alternatively, may be disposed in face-to-face relationship with the impermeable layers 54a, 54b.
- the combination of the Z-folded topsheet 24 and the elastic elements 92 maintains the wetness sensation members in contact with the wearer's skin in the event that the diaper sags or fits loosely around the wearer.
- the spacing between the Z-folds can be about 65 mm and can range from about 50 mm to about 90 mm.
- transverse bonds are produced between the Z-folds in the first waist region, the second waist region and the crotch region using adhesives, ultrasonic bonds, radio frequency bonds, or other suitable means in order to control deflection. These transverse bonds attach the Z-folded section to the body-facing surface of the topsheet and the section between the Z-folds to the underlying core.
- the wetness sensation member of the present invention may also be integrated with other components of the diaper such as the barrier leg cuffs.
- the barrier leg cuffs may be made from either permeable or impermeable material. In either case, the barrier leg cuff material may form one of the layers of the wetness sensation member.
- FIG. 8a and 8b An example of wetness sensation members integrated with the barrier leg cuffs is shown in Figures 8a and 8b.
- the diaper 20 for this embodiment includes barrier leg cuffs 100a, 100b made from impermeable material.
- the barrier leg cuffs 100a, 100b extend along the longitudinal edges of the diaper 20 in a parallel arrangement disposed on the body-facing surface of the topsheet 24 leaving an exposed center portion 184 of the topsheet 24 therebetween.
- wetness sensation members 150a, 150b are incorporated with the barrier leg cuffs 100a, 100b such that the barrier leg cuff material provides the impermeable layer of the wetness sensation members.
- the permeable layer 110 can extend the length of the barrier leg cuffs, preferably the length of the crotch region 37 and the front waist region 36, and are disposed on portions of the cuff closest to the longitudinal axis 42 of the diaper 20 to increase the likelihood of becoming wetted during urination.
- the barrier leg cuffs 100a, 100b include Z-folded configurations with inner folds 105a, 105b disposed near the longitudinal axis 42 of the diaper 20 leaving a center portion 184 of the topsheet 24 exposed.
- the Z-folded leg cuffs 100a, 100b also include outer folds 106a, 106b having elastic elements 108 disposed therein. During use, the elastic elements 108 deflect the leg cuffs away from the topsheet 24, towards the skin of the wearer.
- the body-facing portion of the wetness sensation members may include a topical adhesive or body adhering composition, which acts to hold the wetness sensation member in place during use.
- the topical adhesive may be applied to at least a portion of the body-facing surface of the wetness sensation member.
- the body adhering composition may also be integral with the material making up the body-facing layer of the wetness sensation member.
- the body adhering composition may be disposed on any portion of the wetness sensation member contacting the skin of the wearer in any pattern or configuration including, but not limited to lines, stripes, dots, and the like.
- Types of body adhering composition may include any one or more substances capable of releasably adhering to the skin of the wearer. Further, the body adhering composition may be in the form of a gel, lotion, film, web or the like.
- suitable body adhering compositions include adhesives, gelatin, petrolatum, waxes such as silicone or petroleum waxes, oils such as silicone or petroleum based oils, skin care compositions or ingredients thereof, as described below, and the like.
- Suitable topical adhesives include, but are not limited to, hydrogel or hydrocolloid adhesives such as acrylic based polymeric adhesives, and the like. (Some exemplary hydrogel and/or hydrocolloid adhesives are disclosed in U.S.
- the topical adhesives may also include any "medical adhesive" which is compatible for use with biological tissue, such as skin.
- Acrylic medical adhesives suitable for use as body adhering compositions include adhesives available from Adhesive Research, Inc., of Glen Rock, PA, under the designations MA-46, MA-312, "MTTM” High MVTR adhesive, and AS- 17. Rubber-based medical adhesives, such as SB-2 from Adhesive Research Inc. may also be suitable.
- exemplary adhesives include Dow Corning Medical Adhesive (Type B) available from Dow Corning, Midland, MI; "MEDICAL ADHESIVE” from Hollister Inc., of Libertyville, IL; 3M Spray Adhesives #79, 76, 77 and 90 available from the 3M Corp. of St. Paul, MN; and "MATISOL” liquid adhesive available from Ferndale Laboratories of Ferndale, MI.
- Other medical adhesives are described in U.S. Patent Nos. 4,078,568; 4,140,115; 4,192,785; 4,393,080; 4,505,976; 4,551,490; 4,768,503 and polyacrylate and polymethacrylate hydrogel adhesives are disclosed in U.S.
- Patents 5,614,586 and 5,674,275 the disclosure of each of which is incorporated by reference herein.
- Yet another exemplary adhesive comprising polyvinyl pyrrolidone and a multifunctional amine-containing polymer is disclosed in WO 94/13235A1.
- Alternative body adhering means which may be used in place of or in addition to those described above, include static electricity, suction, and the like.
- the body adhering composition permit vapors to pass (i.e., breathable), be compatible with the skin and otherwise skin friendly.
- the body adhesive be at least partially hydrophobic, preferably 60%, more preferably 80%, by weight of the adhesive consist of hydrophobic components.
- hydrophilic adhesives are contemplated in certain embodiments of the present invention.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
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AT02803980T ATE537800T1 (en) | 2001-11-26 | 2002-11-14 | PORTABLE DISPOSABLE ITEM WITH WETNESS INDICATORS |
HU0402601A HUP0402601A3 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member |
CA002467968A CA2467968C (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member |
MXPA04004983A MXPA04004983A (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member. |
AU2002365382A AU2002365382B2 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member |
EP02803980A EP1453455B1 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having wetness sensation members |
JP2003546803A JP4489429B2 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensing member |
BR0214411-5A BR0214411A (en) | 2001-11-26 | 2002-11-14 | Disposable article suitable for use with a moisture-sensing element |
KR1020047007919A KR100686751B1 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member |
HK05107033A HK1074766A1 (en) | 2001-11-26 | 2005-08-15 | Wearable disposable article having a wetness sensation member |
Applications Claiming Priority (2)
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US09/994,461 | 2001-11-26 | ||
US09/994,461 US6627786B2 (en) | 2001-11-26 | 2001-11-26 | Wearable article having a wetness sensation member |
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WO2003045298A1 true WO2003045298A1 (en) | 2003-06-05 |
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PCT/US2002/036587 WO2003045298A1 (en) | 2001-11-26 | 2002-11-14 | Wearable disposable article having a wetness sensation member |
Country Status (14)
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US (2) | US6627786B2 (en) |
EP (1) | EP1453455B1 (en) |
JP (2) | JP4489429B2 (en) |
KR (2) | KR100686751B1 (en) |
CN (2) | CN100592901C (en) |
AT (1) | ATE537800T1 (en) |
AU (1) | AU2002365382B2 (en) |
BR (1) | BR0214411A (en) |
CA (2) | CA2635893A1 (en) |
HK (1) | HK1074766A1 (en) |
HU (1) | HUP0402601A3 (en) |
MX (1) | MXPA04004983A (en) |
WO (1) | WO2003045298A1 (en) |
ZA (1) | ZA200403555B (en) |
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-
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- 2002-11-14 KR KR1020047007919A patent/KR100686751B1/en not_active IP Right Cessation
- 2002-11-14 CN CN200610008847A patent/CN100592901C/en not_active Expired - Fee Related
- 2002-11-14 BR BR0214411-5A patent/BR0214411A/en not_active Application Discontinuation
- 2002-11-14 AT AT02803980T patent/ATE537800T1/en active
- 2002-11-14 JP JP2003546803A patent/JP4489429B2/en not_active Expired - Fee Related
- 2002-11-14 EP EP02803980A patent/EP1453455B1/en not_active Expired - Lifetime
- 2002-11-14 HU HU0402601A patent/HUP0402601A3/en unknown
- 2002-11-14 KR KR1020067004162A patent/KR20060022736A/en active IP Right Grant
- 2002-11-14 CA CA002635893A patent/CA2635893A1/en not_active Abandoned
- 2002-11-14 WO PCT/US2002/036587 patent/WO2003045298A1/en active Application Filing
- 2002-11-14 CA CA002467968A patent/CA2467968C/en not_active Expired - Fee Related
- 2002-11-14 CN CNB028228715A patent/CN1273104C/en not_active Expired - Fee Related
- 2002-11-14 AU AU2002365382A patent/AU2002365382B2/en not_active Ceased
- 2002-11-14 MX MXPA04004983A patent/MXPA04004983A/en active IP Right Grant
-
2003
- 2003-06-06 US US10/456,463 patent/US20030199845A1/en not_active Abandoned
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2004
- 2004-05-10 ZA ZA200403555A patent/ZA200403555B/en unknown
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2005
- 2005-08-15 HK HK05107033A patent/HK1074766A1/en not_active IP Right Cessation
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2007
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007508070A (en) * | 2003-10-30 | 2007-04-05 | ザ プロクター アンド ギャンブル カンパニー | Disposable absorbent articles with visually enhanced wetness sensing members |
US7767876B2 (en) | 2003-10-30 | 2010-08-03 | The Procter & Gamble Company | Disposable absorbent article having a visibly highlighted wetness sensation member |
US7781640B2 (en) | 2003-10-30 | 2010-08-24 | The Procter & Gamble Company | Disposable absorbent article having a visibly highlighted wetness sensation member |
WO2007091225A1 (en) * | 2006-02-10 | 2007-08-16 | The Procter & Gamble Company | Absorbent article with sensation member |
CN107456322A (en) * | 2017-09-06 | 2017-12-12 | 黄琪婷 | A kind of leakproof of Intelligent Recognition excreta, which is changed, reminds diaper |
Also Published As
Publication number | Publication date |
---|---|
AU2002365382B2 (en) | 2005-10-13 |
EP1453455A1 (en) | 2004-09-08 |
CN1817331A (en) | 2006-08-16 |
JP2008029898A (en) | 2008-02-14 |
CA2467968C (en) | 2009-04-14 |
US20030100872A1 (en) | 2003-05-29 |
KR20060022736A (en) | 2006-03-10 |
JP4489429B2 (en) | 2010-06-23 |
HUP0402601A2 (en) | 2005-04-28 |
JP2005510297A (en) | 2005-04-21 |
CN1273104C (en) | 2006-09-06 |
CA2467968A1 (en) | 2003-06-05 |
EP1453455B1 (en) | 2011-12-21 |
HUP0402601A3 (en) | 2005-05-30 |
MXPA04004983A (en) | 2004-08-11 |
CA2635893A1 (en) | 2003-06-05 |
KR20040055816A (en) | 2004-06-29 |
US20030199845A1 (en) | 2003-10-23 |
AU2002365382A1 (en) | 2003-06-10 |
BR0214411A (en) | 2004-09-14 |
ATE537800T1 (en) | 2012-01-15 |
HK1074766A1 (en) | 2005-11-25 |
ZA200403555B (en) | 2005-05-19 |
US6627786B2 (en) | 2003-09-30 |
KR100686751B1 (en) | 2007-02-23 |
CN100592901C (en) | 2010-03-03 |
CN1589129A (en) | 2005-03-02 |
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