US20040243092A1 - Disposable pant type absorbent article - Google Patents
Disposable pant type absorbent article Download PDFInfo
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- US20040243092A1 US20040243092A1 US10/872,652 US87265204A US2004243092A1 US 20040243092 A1 US20040243092 A1 US 20040243092A1 US 87265204 A US87265204 A US 87265204A US 2004243092 A1 US2004243092 A1 US 2004243092A1
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- waist region
- lateral end
- front waist
- absorbent article
- type absorbent
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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
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- 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
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
-
- 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
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
- A61F13/49015—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels the elastic means being elastic panels
-
- 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
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
-
- 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
- A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
- A61F13/565—Supporting or fastening means specially adapted for diapers or the like pants type diaper
-
- 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
- A61F13/62—Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop
- A61F13/622—Fabric strip fastener elements, e.g. hook and loop
-
- 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
- A61F2013/49068—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
- A61F2013/49077—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline as "T"-shaped
-
- 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
- A61F2013/49087—Absorbent articles specially adapted to be worn around the waist, e.g. diapers having breakable lateral stitches or panels
-
- 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
- A61F2013/8497—Accessories, not otherwise provided for, for absorbent pads having decorations or indicia means
Abstract
A ready-to-wear pull-up type absorbent article such as a diaper is provided which has a waist region comprising a front waist region and a back waist region, and a pair of complimentary fasteners in the respective regions. The front waist region comprises a pair of loop fasteners and the back waist region comprises a pair of hook strips each aligned for releasable engagement with a corresponding loop strip in the front waist region. In lieu of hook strips, the back waist region may include one or more tape tabs each having one surface attached to the back waist region and an opposed hook surface for releasable engagement with a correspondingly aligned loop surface. A weakened line, e.g., a perforated line may be provided in the front waist region which can be readily torn away in order to inspect the diaper. The front and back waist regions may include side seals which can be secured together when the diaper is in assembled ready-to-wear condition and which can be readily torn or peeled in order to inspect the diaper when desired without disengaging the fasteners.
Description
- This application is a continuation-in-part of commonly assigned, copending application Ser. No. 09/247,629 filed Feb. 10, 1999 for Disposable Absorbent Pull-Up Type Diapers And Incontinent Briefs, and Ser. No. 09/844,726 filed Apr. 27, 2001 for Absorbent Articles Having Improved Fastening System.
- The present invention relates generally to disposable absorbent articles such as training pants, diapers, undergarments and incontinent briefs, and is more particularly related to such pants, diapers, undergarments and briefs which have become known in the art as “pull-up” or “pull-on” absorbent articles. In one particular aspect, the present invention relates to an absorbent article of the aforementioned types which, due to its unique construction, assures fitness and comfort to the wearer, protects against leakage of fluids and other body exudates and can be readily opened for inspection and removal from the wearer. This invention also relates to ready-to-wear pull-up type absorbent articles.
- Disposable absorbent articles such as disposable baby diapers and adult incontinent briefs, underpants, guards and the like articles are widely used in homes and in various health care facilities and institutions. Indeed the use of such articles has become a common sanitary practice, and while initially such absorbent articles were used mostly for infant care, more recently their use has been expanded to include adults as well. In both instances, the absorbent article must be designed to effectively prevent leakage of urine and other fecal materials, while insuring body fit and comfort.
- Most presently available absorbent articles are generally unitary in structure, pre-shaped and pre-folded, and comprise an absorbent pad having a liquid permeable top sheet facing the wearer's body, a liquid impermeable backsheet on the opposite side, and an absorbent sheet or panel disposed between the top sheet and the back sheet. The absorbent article comprises a front side portion, a crotch portion and a backside portion, and further includes elastic members along the circumference of the waist and around the leg openings. While the heretofore commercially available absorbent articles have been somewhat effective against leakage of body fluids and fecal materials, and have therefore met some degree of acceptability, they have not been entirely satisfactory for their intended applications. In other words, they have not proven to be entirely leak proof, nor have they completely prevented issuance of the body exudates outside the diaper or the underpants. These deficiencies are primarily due to inadequate and loose body fit, which result in leakage of the body fluids and solids through the legs' openings. These problems are even more pronounced in case of adults because of their diverse body shapes and varying contours. Another disadvantage of the commercially available absorbent articles such as diapers, incontinent briefs and the like, is associated with opening and removing the soiled article for inspection without soiling the wearer's leg or body, or changing the diaper while the wearer has his or her shoes and pants on.
- There are several patents which disclose various attempts made in the prior art over the past years to eliminate, or at least minimize, the shortcomings of the present commercially available absorbent briefs. Some of these patents are referred to in the aforementioned commonly assigned, copending application. That application describes a pull-up diaper comprising front and back elasticized waist portions, an insert member having an absorbent core comprising an elasticated crotch region, and at least one elastic member disposed in the longitudinal direction on each side of the crotch region. As shown in FIGS. 1 and 2 of said copending application, the diaper is provided with side seals formed by heat, pressure or combination thereof. In addition, a finite area at each end of the side seals is sealed adhesively or by a hot melt. In an alternative embodiment shown in FIG. 2C of said copending application, male and female Velcro® regions are provided which are adapted to engage into one another to provide a seal when the front portion of the diaper is folded on the back portion of the diaper.
- In a recent patent, i.e., U.S. Pat. No. 6,027,484 issued Feb. 22, 2000 to Anette Remare, a pant diaper is described comprising a piece of fibrous nonwoven or plastic elastic material9 having two parts 13 and 14 which can be pulled apart to define the side parts or flaps of the diaper. The side parts are fastened together by means of the
hooks 15,16 and the loop 17 as shown in FIGS. 1 and 2. The piece 9 is joined to theouter casing 3 of the front part of the diaper by theglue points 10 which may be homogeneously distributed as shown in FIG. 1 or non-homogenous glue points or fastening means 110 as shown in FIG. 3. - A more recent patent, i.e., U.S. Pat. No. 6,287,287 B1 describes a prefastened disposable article which includes a pair of primary fasteners located on opposed side edges of one waist region. The primary fasteners overlap and releasably engage the opposite waist region. A pair of passive bonds releasably connect the overlapped portion of one waist portion to the opposite waist region in order to maintain the article in prefastened condition.
- In general, the briefs and diapers described in the prior art patents have a common structural deficiency in that they are provided with side seams which are welded together by heat and pressure or vibration (ultrasonic welding). Side seals must be sufficiently strong to hold the diaper on the person and must be capable of being torn so that the wearer can ear it easily in order to inspect or change the diaper while having his or her shoes on. Thus, there is a dire need for pull up type absorbent briefs and diapers which are comfortable to wear, highly effective against leakage of fluids and feces, and which can be readily inspected for soil.
- Accordingly, it is an object of the present invention to provide a pull-up type disposable absorbent article such as infant diapers, adult incontinent underpants, briefs, guards and the like articles, which overcome the deficiencies and shortcomings of the prior art absorbent articles, including present commercially available garments used for this purpose.
- It is another object of this invention to provide disposable absorbent articles which, due to their unique construction, provide improved fit to the body and prevent leakage of urine and other body exudates through the leg openings, and which are easy to take apart for inspection.
- It is also an object of this invention to provide such disposable articles which, due to their unique side seals and fastener system, are easy to open up for inspection and which can be readily reassembled after inspection even while the wearer has his or her shoes on.
- The foregoing and other objects and features of the present invention will be more fully comprehended and appreciated from the ensuing detailed description and drawing which form parts of this application.
- It must be understood throughout this application that the term “pull-up” as used herein is synonymous with “pull-on” as used in the prior art patents.
- The present invention is concerned with providing a ready-to-wear absorbent article such as, for example, a diaper. The diaper comprises a cover sheet, a back sheet, an absorbent layer disposed intermediate the cover sheet and the back sheet, a pair of opposed leg openings and a waist region. The waist region comprises a front waist region and a back waist region connected to each other by a crotch portion, and has belly section which may be elasticated. The front and back waist regions are provided with fasteners for fastening the two regions together. In one embodiment, the fastening system comprises a pair of loop strips in the front waist region, and a pair of correspondingly aligned hook strips in the back waist region such that when the back waist region and front waist region are overlapped, each hook strip releasably engages a correspondingly aligned loop strip. In lieu of a loop strip, the surface of the front waist region itself may act as a loop or a female surface, or a selected segment of the surface may act as the loop for engagement with the hook (male) strip. The front waist region may include a weakened line such as a perforated line adjacent to or in between the strips which can be readily torn in order to inspect the diaper without disengaging the hook and loop fasteners.
- In a variation of the invention, the back waist region comprises one or more tabs located at the lateral or side edges of the waist region. Each tab has one surface attached to the back waist region and an opposed hook surface aligned with a loop strip in the front waist region. In order to fasten the diaper, the back waist region and front waist region are overlapped so as to engage the hook surface of each tab with a correspondingly aligned loop surface.
- In the drawings, wherein like reference numerals are employed to designate like parts:
- FIG. 1 is a perspective view of the disposable absorbent article of the present invention shown as a pull-up diaper having side seals which are broken apart on one side for illustrative purposes;
- FIG. 2 is a stretched plan view of the pull-up diaper shown in FIG. 1;
- FIG. 3 is a sectional view taken along the line3-3 of FIG. 2;
- FIG. 4 is a sectional view taken along the line4-4 of FIG. 2, and
- FIG. 5 is a schematic view illustrating overlapping of the front waist region and back waist region of the diaper shown in FIG. 1 and the manner of their attachment by hook and loop;
- FIG. 6 is a stretched plan view similar to FIG. 2 but illustrating another variation of hook and loop fasteners;
- FIG. 7 is a schematic view similar to FIG. 5 but illustrating the hook and loop fastener arrangement in FIG. 6;
- FIG. 8 is a view similar to FIG. 2 but using tape tabs with hooks in combination with loop fasteners wherein the tape tabs are located on the inside surface of the back waist;
- FIG. 8A is a cross-sectional view taken along the
line 8A-8A of FIG. 8; - FIG. 8B is a cross-sectional view taken along the
line 8B-8B of FIG. 8; - FIG. 8C is a view similar to FIG. 5 showing the overlapping of the front waist and the back waist of the diaper;
- FIG. 9 is a perspective view of the diaper shown in FIG. 8 with the tape tabs pulled away from the loop fasteners and the diaper ready to wear;
- FIG. 10 is a stretched plan view of a pull-up diaper according to another embodiment of the present invention wherein the tape tabs are located on the outer surface of the back waist;
- FIG. 10A is a cross-sectional view taken along the line10A-10A of FIG. 10;
- FIG. 10B is a cross-sectional view taken along the line10B-10B of FIG. 10;
- FIG. 10C is a view similar to FIG. 8C but showing the manner of fastening the front waist and back waist of the diaper shown in FIG. 10;
- FIG. 11 is a stretched plan view of a different embodiment of the present invention similar to the embodiment illustrated in FIG. 11 with the tape tabs located on the outside surface of the back waist region, folded and adhesively secured to said surface;
- FIG. 11A is a cross-sectional view taken along the lines11A-11A of FIG. 11;
- FIG. 11B is a cross-sectional view taken along the line11B-11B of FIG. 11;
- FIG. 11C is a view similar to FIG. 10C showing the overlapping the front waist and back waist of the diaper;
- FIG. 12 is a stretched plan view of a different embodiment of the present invention similar to the embodiment illustrated in FIG. 10 with the tape tabs located on the outside surface of the back waist region and projecting outside of the lateral edges;
- FIG. 12A is a cross-sectional view taken along the
line 12A-12A of FIG. 12; - FIG. 12B is a cross-sectional view taken along the line12B-12B of FIG. 12;
- FIG. 12C is a view similar to FIG. 10C showing fastening system; and
- FIG. 13 is a stretched plan view of still another embodiment of the invention similar to FIG. 12 but having a weakened perforated line adjacent the side seal.
- Referring to FIG. 1, there is shown a pull-up diaper generally designated as100 comprising an elasticated
back waist region 101 and an elasticatedfront waist portion 103. The elasticatedback waist region 101 includes an elastic band comprising a plurality ofelastic members 105 spanned across theback waist region 101, and the elasticatedfront waist region 103 includes an elastic band comprising a plurality ofelastic members 107 spanned across thefront waist portion 103. Thediaper 100 also comprises a pair of elasticated leg openings, i.e., a rightelasticated leg opening 109 and a leftelasticated leg opening 111. Theleft leg opening 109 is provided at its peripheral edges with the crotchelastic members 113 and theright leg opening 111 is also provided at its peripheral edges with the crotchelastic member 115. Each leg opening also comprises a thighelastic member 117 which is usually tensioned from about 0 to about 400 percent elongation, preferably from about 150 to about 250 percent elongation. The peripheral crotchelastic members crotch region 119 of the wearer in order to prevent leakage of urine or other body exudates through the leg openings. The front and back of thediaper 100 are provided with the side seals 121A,121B disposed at the outer left edges of theback waist region 101 and thefront waist region 103, andsimilar side seals back waist region 101 and thefront waist region 103 as shown .n FIG. 2. These side seals may be formed by heat, pressure, combination of heat and pressure, or by a suitable adhesive in a manner known in the prior art. The side seals preferably have low peel strength so that when the seals are torn or peeled away their external edges remain clean. Preferably, the side seals strength may be from 1 to about 3 pounds per inch, and more preferably less than about 1 pound per inch. - The diaper may also be provided with elastics at the belly portion in the front or back but such belly elastics are not strictly necessary for some diapers.
- Ordinarily, in order to inspect the diaper during wear, the seal is ripped open and the diaper is inspected for the presence of feces or exudates. Once inspected, the diaper is disposed of since it is often difficult to effectively reseal the side seals. In the embodiment of the present invention shown in FIG. 2, the diaper is provided with two strips of hook and
loop material hook material loop strips - Referring again to the drawings, more specifically to FIGS. 2-5, the
diaper 100 comprises aninsert member 127 which contains theabsorbent core 129 sandwiched between the cover or top layer or sheet 131 (facing the body of the wearer) and thepolyethylene backing film 133. Theinsert 127 is secured, adhesively or by some other suitable means, to aspunbond nonwoven layer 135. Optionally, theabsorbent core 129 may be covered by the bottom tissue layers 137 generally made of wood pulp fibers or similar material. Anacquisition layer 139 is interposed between thecover sheet 131 and thecore layer 129 and serves to temporarily retain the body exudates and slowly distribute them through theabsorbent core 129 in order to keep the skin dryer. The various layers are generally coextensive with one another and are sealed together to form a sealed composite structure. - As shown in FIG. 2, the
absorbent core 129 spans substantial part of the length of thediaper 100 terminating at theback edge 129A, thefront edge 129B, the right side edges 129C, 129D, and left side edges 129 and 129F. However, as it can also be seen from this figure, theback edge 129A and thefront edge 129B of theabsorbent core 129 are spaced apart a finite distance, which may be varied, relative to the diaper. Theinsert 127 is defined by the longitudinal side edges 127A, 127B, 127C and 127D, thelateral edges elastic members - As previously mentioned, each
leg opening elastic member 117 shown as a curved elastic in FIG. 2, but may be straight elastic element if desired. The thigh elastic may be tensioned from about 0 to about 400 percent elongation, preferably from about 150 to about 300 percent elongation for more improved fitness around the legs. - As is further shown in FIG. 2, the
diaper 100 of the present invention has anelasticized crotch region 119 which is provided with one or more spaced-apart rightelastic members 113 disposed interiorly of the leg right opening 109 on the right side edge of the insert, and one or more spaced-apart leftelastic members 115 disposed interiorly of theleg opening 111 of the left side of theinsert 127. - Referring to FIGS. 3 and 4, the coversheet or
layer 131 is conveniently made of spunbond nonwoven polypropylene which is available from First Quality Fibers, Inc., McElhattan, Pa. Theacquisition layer 139 is usually made of chemically bonded nonwoven polypropylene available from American Nonwovens, Columbus, Mo. Preferably, the width of this layer is substantially the same as the width of theabsorbent core 129. This core may be made pulp fibers and superabsorbent polymers such as IM 7000 series available from Clariant Products, Inc., Portsmouth, Va., andChemdal 200 series, available from Chemdal, Inc., Palantine, Ill. Alternatively, theabsorbent core 129 may be made of dual layer construction, in which case, the absorbent polymer may be securely positioned between each layer of the absorbent material. - The
film backing 133 is usually a polyethylene layer which is liquid, air and preferably vapor impermeable, and is placed under theabsorbent core member 129 to prevent body exudates from leaking and otherwise soiling the user's bed and clothing. The width and length of thebacking film 133 are generally at least equal to the width and length of theabsorbent core 129. Polyethylenes suitable as backing film for the purpose of this invention are available from Clopay Plastics, Cincinnati, Ohio as is further shown in FIGS. 3 and 4, alayer 135 of spunbond nonwoven polypropylene is disposed as a backing layer and covers the area under theinsert 127. This layer is usually coextensive with the overall width and length of the pull-up diaper. - As is further shown in FIGS. 2 and 3, there is one
elasticated crotch cuff 143 on each side of the garment. Each of these crotch cuffs is formed of a layer of spunbond nonwoven polypropylene laminated by hot-melt adhesive or by heat, and forms a fluid and an air impermeable composite structure. The crotch cuffs are under no tension or are tensioned from about 100 to about 200 percent so that the garment can fit snugly against the body and prevent leakage of body fluids of exudates, without pinching the body of the wearer. Additionally, these cuffs act as barriers against fluid leakage on each side of the absorbent core. - The garment of the present invention also has an
elasticated waist cuff 145 which, similar to crotch cuffs, is not tensioned or is minimally tensioned between about 1 to about 100 percent elongation in order to provide a tight body fit which is leak-proof without pinching the body or causing discomfort to the wearer. - The
insert 127 is adhesively secured to thenonwoven backing film 133 and, as shown in FIG. 2, the crotch width of theinsert 127 is narrower than its width at the waist. As previously mentioned, there are usually threeelastic members - As is further shown in FIG. 2, the pull-on diaper of this invention has a
waist cuff base 147 with awaist cuff apex 149 on both the front and back of the article. Similar to the crotch cuffs, these waist cuffs prevent fluid leakage from the ends of thecore members 129. - In the embodiment shown in FIG. 2, the hook and loop fastener strips are located adjacent the side seals. However, in a variation of this embodiment, the hook and loop fastener strips may be used without the side seals and put on the diaper without the wearer taking of his or her shoes or pants. When in use, the wearer may disengage the strips, inspect the diaper for leaks and/or exudates and if free from such materials, the hook and loop strips may be refastened. The hook and loop fasteners may be attached to the inside or outside of the diaper. However, it is preferable to attach the loops on the inside surface and the hooks on the outside surface since the hook material has a rough surface which would irritate the skin. If the diaper is provided with side seals, this seal may be torn and the hook and loop fasteners are used to fasten the diaper.
- Another variation of the fastening system for the diaper of this invention is shown in FIG. 6. The basic components of the diaper in this figure is the same as the diaper shown in FIG. 2 except for the number and location of the hook and loop strips. Thus, referring to FIG. 6, the front and back of the
diaper 200 are provided with the side seals 221A, 221B disposed at the outer right edges of theback waist region 201 and thefront waist region 203, andsimilar side seals 221C and 221D are located at the outer left edges of theback waist region 201 and thefront waist region 203. These side seals may be formed by heat, pressure, combination of heat and pressure, or by a suitable adhesive in a manner known in the prior art. Thefront waist region 203 comprises a pair strips 205,207 of a loop material, with theloop strip 205 spaced apart inward relative to the edge or side seal 221A on the inner surface of the back waist region and theloop strip 207 spaced apart inward relative to the edge orside seal 221C or the outer surface of the back waist region. The term “strip” as used herein is not limited to any particular configuration as it may be rectangular, square, circular or any other shape and may be a patch or a section of the surface of material itself. Thus, the material itself may constitute a loop suitable for engagement with the hook strips. Thefront waist region 201 comprises theloop strip 209 spaced apart inward relative to the edge or side seal 221 B on the outer surface and ahook strip 211 on the inner surface adjacent theloop strip 209 and separated therefrom by a weakened tear line such as theperforated line 213. On the left side of the article, the front waist region comprises a pair of side-by-side hook strips 215,217 spaced apart inward relative to the edge or side seal 221D, and separated from each other by a weakened tear line such as theperforated line 219. Both hook strips 217,215 are located on the inner surface of thefront waist region 203. In order to assemble and fasten the diaper, when theperforated lines waist region 201 andwaist region 203 are folded on each other, thehook strip 209 engages theloop strip 215 and the hook strips 211 and 217 engage the loop strips 205 and 207, respectively. A segment of a nonwoven material or some other suitable material may be used as enforcement or backup portion for the perforated lines in order to assure a clean tear of the perforated line. - FIG. 7 is a schematic representation of the manner of fastening the hook and loop system shown in FIG. 6.
- FIGS. 8-13 illustrate those embodiments of the invention using tape tabs as the male components of the fastening system. Otherwise, the structure of the diaper in these embodiments is the same as in FIGS. 2 and 6.
- Thus referring to FIG. 8 the diaper shown therein is generally designated as300 comprising a
back waist region 301 having opposed lateral wings, and afront waist region 303 having similar opposed lateral wings, relative to the longitudinal axis W-W of the diaper. Thefront waist region 303 comprises a pair ofstrips back waist region 301 hastape tabs tape tab 313 has anadherent surface 313A attached to the back waist portion, arelease paper 313B, ahook surface 313C opposite said adherent surface, and an adherent surface 313D for attaching said hook surface to the back waist region. Thetape strip 313 has afinger lift 313E for lifting the adhesive strip in order to expose the hook surface. The release tape 313D and thefinger lift 313E are optional and not strictly necessary. - In order to fasten the diaper the side seals317,319 are torn and the tape 313D is pulled away by lifting and pulling the
finger lift 313E, the front waist region and the back waist region are then overlapped thereby engaging thehooks edge seal - FIG. 9 is a perspective view of the pull-up diaper shown in FIG. 8 and is similar to the diaper shown in FIG. 2 except for the provision of the tape tabs having hook surfaces. Otherwise, the structures of the two diapers are the same.
- FIG. 10 is a stretched plan view of another embodiment of the invention similar to FIG. 8 but wherein the back waist region comprises three spaced apart tabs near the edge seal at each wing. Otherwise, the construction of the diaper is similar to the diaper shown in FIG. 8. Thus, the diaper shown in FIG. 10 is generally designated as400 comprising a
back waist region 401 having opposed lateral wings, and a front waist region having similar opposed lateral wings, relative to the longitudinal axis X-X of the diaper. Thefront waist region 403 comprises a pair ofstrips back waist region 401 has threetape tabs tape tabs back waist region 401. Thus, referring to FIGS. 10A-10C,tape tab 415 has anadherent surface 415A and a backing film 415B for attaching the tape tab to theback waist region 401. Afinger lift portion 415C permits lifting the backing film away from the waist's outer surface. The tape tab has a hook surface 415D and arelease paper 415E. The remaining tape tabs, i.e.,tape tabs tape tab 415 and are positioned on the outer surface of the back waist region in the same manner. These tapes are attached to the back waist surface such that each finger lift edge is adjacent to the side seals. - The
back waist region 401 and thefront waist region 403 are fastened together in the same manner described in connection with the diaper shown in FIG. 8. Also, shown in FIG. 10, the front and back waist regions comprise edge seals at each lateral edge or wing. - The embodiment shown in FIG. 11 is similar to the embodiment shown in FIG. 10 with that the tape tabs located on the outer surface of the
back waist region 503 of thediaper 500 except that the tapes are folded as shown in FIG. 11B. Referring to FIG. 11B which is an enlarged view of thetape tab 515, as shown therein, the tape tab construction is identical to the tapes shown in FIGS. 10, 10A, 10B and 10C. Thus, the tab has anadhesive surface 515A which is attached on the back side of the diaper and the remainder of the tape is folded to prevent the edges of the tape from interfering with the side seals. This tape also comprises a portion attached on the back side of the diaper waist, arelease layer 521, ahook fastener 523 and afinger lift portion 521A. - The embodiment shown in FIG. 12 is similar to the embodiment illustrated in FIG. 11 except that tape tabs attached to the back waist region project laterally beyond the edges of the respective wings. The diaper in FIG. 12 generally designated by500 comprises a
back waist region 501 having opposed lateral wings, afront waist region 503 having similar opposed lateral wings, afront waist region 503 having similar opposed lateral wings, relative to the longitudinal axis Y-Y of the diaper. Thefront waist region 503 comprises a pair ofstrips back waist region 501 has threetape tabs tape tabs tape tabs portion 509A, 511A, 513A, 515A, 517A and 519A, respectively, partly projecting beyond the lateral edge of each wing. These tapes are engaged with the respective loops on the back surface of the front waist region. - The manner of fastening the front and back waist regions to assemble the diaper is similar to the embodiments shown in FIG. 11. As shown in FIG. 12, if desired, side seals are provided at the respective lateral edges of each wing of the front and back waist regions. When one wishes to inspect or change the diaper, the tapes are disengaged from the loops, the side seal is torn and the diaper is inspected or changed.
- Another embodiment of the invention is illustrated in FIG. 13. The diaper shown in this figure is similar to FIG. 12 comprising a
back waist region 601 having opposed lateral wings, and afront waist region 603 having similar opposed lateral wings, relative to the longitudinal axis Z-Z of the diaper. Thefront waist region 603 comprises a pair ofstrips back waist region 601 has threetape tabs tape tabs portions front waist region 603 comprises a weakened line such as aperforated line 619 and 621 disposed adjacent each of the loop strips 605, 617. Thus, when the diaper is fastened, the diaper may be inspected by tearing along the perforated lines to inspect the inside of the diaper for presence of urine or fecal material. Also, as shown in FIG. 13, the wings of the front and back waist regions have side seals for sealing the edges of the diaper. - The provision of perforated line in FIG. 13 permits tearing the diaper along this perforated line in order to inspect the diaper and engage the tapes with hooks to the loop surface. If the diaper has perforated lines as aforesaid, the provision of side seals is optional. Whether or not the diaper is provided with side seals, the tapes with a hook surface may be engaged onto the loop strips to form the ready-to-wear diaper, and this may be performed even during the manufacture of the diaper.
- It is apparent from the foregoing detailed description and the several embodiments shown in the drawings that some modifications may be made in the construction of the diaper which are suggested thereby and hence are within the scope and contemplation of this invention.
Claims (21)
1. An integral pull-up type absorbent article comprising:
(a) a cover sheet;
(b) a back sheet;
(c) an absorbent layer disposed intermediate said cover sheet and said backsheet;
(d) a pair of spaced apart leg openings;
(e) a front waist region having a first lateral end and a second lateral end;
(f) a back waist region having a first lateral end and a second lateral end, the first lateral end of the back waist region being connected to the first lateral end of the front waist region, and the second lateral end of the back waist region being connected to the second lateral end of the front waist region:
(g) a first tab disposed adjacent the first lateral end of the back waist region and a second tab disposed adjacent the second lateral end of the back waist region, wherein, when said front waist region and said back waist region are disconnected, said first tab and said second tab can directly engage said front waist region.
2. The integral pull-up type absorbent article of claim 1 , wherein each of the first and second tabs comprises:
a first end attached to the back waist region; and
a second end extending from the corresponding one of the first and second lateral ends of the back waist region, the second end comprising a hook strip.
3. The integral pull-up type absorbent article of claim 1 , wherein each of the first and second lateral ends comprises a side seal.
4. The integral pull-up type absorbent article of claim 3 , wherein each of the side seals is adhesively secured to its respective lateral end.
5. The integral pull-up type absorbent article of claim 1 , wherein the waist region is elasticated.
6. The integral pull-up type absorbent article of claim 2 , wherein the front waist region is made of a loop material that accepts the hook strips of the first and second tabs.
7. The integral pull-up type absorbent article of claim 6 , wherein the front waist region is made of a spunbond nonwoven.
8. The integral pull-up type absorbent article of claim 2 , wherein the front waist region comprises a first region disposed adjacent the first lateral end of the front waist region and a second region disposed adjacent the second lateral end of the front waist region, and the first region and the second region of the front waist region have higher affinity to accepting the hook strips of the first and second tabs in relation to the remainder of the front waist region.
9. An integral pull-up type absorbent article comprising:
(a) a cover sheet;
(b) a back sheet;
(c) an absorbent layer disposed intermediate the cover sheet and the backsheet;
(d) a pair of spaced apart leg openings;
(e) a front waist region having a first lateral end and a second lateral end;
(f) a back waist region having a first lateral end and a second lateral end, the first lateral end of the back waist region being connected to the first lateral end of the front waist region, and the second lateral end of the back waist region being connected to the second lateral end of the front waist region;
(g) a first tab attached to the first lateral end of the back waist region and a second tab attached to the second lateral end of the back waist region, each of the first and second tabs having a portion extending outwardly relative to its respective lateral end and having a free end comprising a hook surface, wherein when the front waist region and the back waist region are disconnected, the hook surfaces of the first and second tabs can directly engage the front waist region.
10. The integral pull-up type absorbent article of claim 9 , wherein each of the lateral ends comprises a side seal.
11. The integral pull-up type absorbent article of claim 10 , wherein each of the side seals is adhesively secured to its respective lateral end.
12. The integral pull-up type absorbent article of claim 9 , wherein the waist region is elasticated.
13. The integral pull-up type absorbent article of claim 9 , wherein the front waist region is made of a loop material that accepts the hook surfaces of the first and second tabs.
14. The integral pull-up type absorbent article of claim 9 , wherein the front waist region comprises a first region disposed adjacent the first lateral end of the front waist region and a second region disposed adjacent the second lateral end of the front waist region, and the first region and the second region of the front waist region have higher affinity to accepting the hook surfaces of the first and second tabs in relation to the remainder of the front waist region.
15. An integral pull-up type absorbent article comprising:
(a) a cover sheet;
(b) a back sheet;
(c) an absorbent layer disposed intermediate the cover sheet and the backsheet;
(d) a pair of spaced apart leg openings;
(e) a front waist region having a first lateral end and a second lateral end;
(f) a back waist region having a first lateral end and a second lateral end, the first lateral end of the back waist region being connected to the first lateral end of the front waist region, and the second lateral end of the back waist region being connected to the second lateral end of the front waist region;
(g) a first tab attached to the first lateral end of the back waist region and a second tab attached to the second lateral end of the back waist region, each of the first and second tabs having a portion extending outwardly relative to its respective side edge and having a hook surface, wherein the front waist region is made of a loop material that accepts the hook surfaces of the first and second tabs and, when the front waist region and the back waist region are disconnected, the hook surfaces of each of the first and second tabs directly engage the front waist region.
16. The integral pull-up type absorbent article of claim 15 , wherein each of the lateral ends comprises a side seal.
17. The integral pull-up type absorbent article of claim 16 , wherein each of the side seals is adhesively secured to its respective lateral end.
18. The integral pull-up type absorbent article of claim 15 , wherein the waist region is elasticated.
19. A ready-to-wear pull-up type absorbent article comprising:
(a) a coversheet;
(b) a back sheet;
(c) an absorbent layer disposed intermediate the cover sheet and the back sheet;
(d) a pair of spaced apart leg openings;
(e) a waist region comprising a front waist region connected to a back waist region, the front waist region having an outer surface of loop material;
(f) a pair of spaced apart tabs attached to the back waist region, each of the tabs having a hook surface, wherein, when the back waist region is disconnected from the front waist region, each of the hook surfaces of the tabs can engage with the loop material.
20. The ready-to-wear pull-up type absorbent article of claim 19 , wherein each of the front waist region and the back waist region has two lateral ends and each of the lateral ends comprises a side seal.
21. The ready-to-wear pull-up type absorbent article of claim 19 , wherein the waist region is elasticated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/872,652 US20040243092A1 (en) | 1999-02-10 | 2004-06-21 | Disposable pant type absorbent article |
Applications Claiming Priority (4)
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US24762999A | 1999-02-10 | 1999-02-10 | |
US09/844,726 US20010041879A1 (en) | 2001-03-01 | 2001-04-27 | Absorbent articles having improved fastening system |
US09/965,381 US6752796B2 (en) | 1999-02-10 | 2001-09-27 | Disposable pant type absorbent article |
US10/872,652 US20040243092A1 (en) | 1999-02-10 | 2004-06-21 | Disposable pant type absorbent article |
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Application Number | Title | Priority Date | Filing Date |
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US09/965,381 Continuation US6752796B2 (en) | 1999-02-10 | 2001-09-27 | Disposable pant type absorbent article |
Publications (1)
Publication Number | Publication Date |
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US20040243092A1 true US20040243092A1 (en) | 2004-12-02 |
Family
ID=25509897
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Application Number | Title | Priority Date | Filing Date |
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US09/965,381 Expired - Lifetime US6752796B2 (en) | 1999-02-10 | 2001-09-27 | Disposable pant type absorbent article |
US10/872,652 Abandoned US20040243092A1 (en) | 1999-02-10 | 2004-06-21 | Disposable pant type absorbent article |
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Application Number | Title | Priority Date | Filing Date |
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US09/965,381 Expired - Lifetime US6752796B2 (en) | 1999-02-10 | 2001-09-27 | Disposable pant type absorbent article |
Country Status (3)
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US (2) | US6752796B2 (en) |
EP (1) | EP1297808A3 (en) |
NO (1) | NO20024553L (en) |
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US20070049885A1 (en) * | 2005-09-01 | 2007-03-01 | Wanda Phillips | Potty training device |
CN108366887A (en) * | 2015-12-11 | 2018-08-03 | 尤妮佳股份有限公司 | Pull-on disposable absorbent commodity |
Also Published As
Publication number | Publication date |
---|---|
US6752796B2 (en) | 2004-06-22 |
US20020045879A1 (en) | 2002-04-18 |
NO20024553L (en) | 2003-03-28 |
NO20024553D0 (en) | 2002-09-23 |
EP1297808A2 (en) | 2003-04-02 |
EP1297808A3 (en) | 2007-10-31 |
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