MXPA01002359A - Diaper fastening system - Google Patents

Abstract

A disposable diaper having an adhesive tab fastener in which a first securing tape ribbon has a free end and a fixed end secured to the diaper. A second securing tape ribbon is coextensive with and adhesively but releasably attached to the adhesive-coated face of the free working end of the first securing tape ribbon. The second tape ribbon includes a pressure-sensitive adhesive coating on a face thereof. A release means is provided on the diaper topsheet. The free end of the first securing tape ribbon is adapted to secure the diaper about an infant by adhesive attachment via the adhesive-coated face of the second securing tape ribbon. The free end of the first securing tape ribbon is separable from the second securing tape ribbon to permit the opening of an applied diaper for inspection, and to make the adhesive coating on the free end of the first securing tape ribbon available for use in refastening the diaper. A grippable portion of the free working end of said first tape ribbon projects beyond the respective outermostedges of the release means and the second securing tape ribbon.

Description

DIAP CLAMP SYSTEM FIELD OF THE INVENTION The present invention relates to articles that absorb and / or contain exudates from the body, including disposable absorbent articles such as diapers, adult incontinence products, sanitary napkins and the like, More particularly, the invention relates to disposable absorbent articles. adapted to be secured in place by adhesive tabs. BACKGROUND OF THE INVENTION Disposable diapers provide substantial convenience advantages over diapers intended to be washed and reused, particularly when these are used away from home. In recent years, many different disposable diapers have been proposed and some have been successful in marking. As can be seen from the above disposable diapers, it is desirable to obviate the problems that are inherent in closure systems that use 20 foreign fasteners such as safety pins, snaps and fasteners. For this purpose the adhesive closure systems have presented acceptable solutions that eliminate the need for pins, for example, which present problems especially when the baby is active during the diaper change. U.S. Patent No. 4,049,001 issued to Tritsch, discloses a diaper with a removable tape closure. The tape closure includes a first band of the securing tape and a second band of the securing tape the ^ i ^^^^ jl ^^^? gté & ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^ g ^^^ l ^^^^^^^^ g ^ which is removably attached to the first band of the securing tape One side of the second band of the securing tape is provided with an adhesive coating. A portion of the first band of the tape is adapted to secure the diaper around a baby by adhesive fixation via the adhesive coated side of the second band of the tape. A free end of the first band of the tape is separable from the second band of the tape to allow the opening of a diaper applied for inspection, and to form the adhesive coating on the first band of the securing tape available for use at Resuscribe the diaper around the baby. A problem with the Tritsch tape closure is that the first band of the tape is difficult to hold since the distal portions of both the second band of the tape and the depredation means extend beyond the distal portion of the first band. of the tape.

BRIEF DESCRIPTION OF THE INVENTION The present invention is directed to an improved economic tape reed system which is particularly well suited for use in disposable diapers. which allows an originally attached diaper to be opened and reclosed several times without tearing the tape tab and without the diaper rupture. In this way, the diaper can be opened and closed for inspection or adjustment many times during normal diaper service. The original closure and the posterior closures around the baby provide a good resistant adhesive diaper fixation. The disposable diaper comprises a topsheet, a moisture impermeable backsheet substantially coextensive with the topsheet, an absorbent core positioned between the topsheet and the backsheet, and an adhesive tab fastener. The adhesive tongue fastener comprises a first band of the securing tape having a fixed end and a free operating end. An adhesive coating on at least one side of the fixed end of said first band of the securing tape joins the fixed end of the first band of the securing tape to the disposable absorbent article. A pressure sensitive adhesive coating is provided on one face of said free operating end of said first band of the securing tape. A second band of the assurance tape is coextensive with and • adhesively but releasably affixed to said face covered with adhesive from the free operating end of the first band of the securing tape. The second band of the tape includes a coating of pressure-sensitive adhesive on the second securing band on the face thereof opposite to the face roughened to the free operating end of the first band of the securing tape. A release means is provided on the top sheet. The second band of the securing tape is capable of moving from a stowed storage position in which the second band of the securing tape is releasably adhered to the release means to an operating position in which the second band of the adhesive coated tape is available for use in securing the disposable absorbent article around a baby. The free operating end of the first band of the securing tape is detachable from the second band of the securing tape to allow the disposable absorbent article to be removed from a baby and make the pressure-sensitive adhesive coating on the baby. The free end of operation of the first band of the securing tape is available for use in reattaching the disposable absorbent article around a baby. A graspable portion of the free operating end of the first band of the belt projects beyond the respective outermost edges of the release means and said second band of the securing belt. The improved tape tab system of the present invention will allow someone to inspect or adjust the diaper to do so many times during diaper service. When re-fastening, the tape tabs provide a good, firm, securement to the diaper.

BRIEF DESCRIPTION OF THE DRAWINGS Although the description concludes with the claims pointing out In a particular manner and claiming differently the exposed matter that is considered as the present invention, it is believed that the description will be better understood from the following descriptions which are taken in combination with the accompanying drawings in which they are used. similar designations to designate substantially identical elements. Figure 1 is a plan view of an embodiment of the absorbent article of the present invention having portions cut away to reveal the underlying structure, the surface that gives the garment of the diaper to the observer. Figure 2 is an enlarged fragmentary cross-sectional view of the diaper of Figure 1 taken along the section line 2-2 of Figure 1. Figure 3 is a fragmentary, enlarged, cross-sectional view of the diaper. of Figure 1 taken along section line 3-3 of Figure 1, and that ff shows in dotted line the position that can be assumed by the detachable portion of the tongue fastener of the present invention. Figure 4 is a fragmentary, cross-sectional, enlarged view of another embodiment of a fastener of the present invention.

DETAILED DESCRIPTION OF THE INVENTION As used herein, the term "absorbent article" refers to devices that absorb and contain exudates from the body, and more specifically refers to devices that are placed against or close to the user's body to absorb and contain the various exudates discharged from the body The term "riesechable" is used herein to describe absorbent articles that are not generally intended to be washed or restored or otherwise used as an absorbent article (ie, they are intended to be disposed of afterwards). of simple use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible way.) (As used herein, the term "arranged" is used to imply that an element or elements of the diaper is formed (attached and placed) in a particular location or position as a unitary structure with other diaper elements or as a separate element attached to another element of the diaper. As used herein, the term "attached" encompasses configurations by which one element is directly secured to another element by fixing the element directly to the other element, and configurations by which one element is indirectly secured to the other element by fixing the element to a member or intermediate members who instead bind to the other element.) A "unitary" absorbent article refers to absorbent articles that are formed of separate parts joined together to form a coordinated entity in such a way that they do not require parts manipulated by lower. The present invention is also applicable to other absorbent articles such as absorbent bandages, incontinence briefs, incontinence garments, absorbent inserts, diaper liners and liners, feminine hygiene garments, and the like. Figure 1 is a plan view of the diaper 20 of the present invention in a flattened state with parts of the structure that are cut away to more clearly show the construction of the diaper 20. The portion of the diaper 20 facing the wearer is oriented toward the observer As shown in Figure 1, diaper 20 preferably comprises a liquid-permeable top sheet 24, a back sheet 26 impermeable to liquid; an absorbent core 28, which is preferably positioned i1 between at least a portion of the topsheet 24 and the backsheet 26; side panels 30; elasticated folds for the leg 32; a characteristics of elastic waist 34; and securing tabs 40. The diaper 20 is shown in FIG. 1 to have a first waist region 36, a second waist region 38? opposite the first waist region 36 and a crotch region 37 located between the first waist region and the second waist region. The periphery of the diaper 20 is defined by the outer edges of the diaper 20, in which the longitudinal edges' run generally parallel to the longitudinal center line 100 of the diaper 20 and the end edges run between the longitudinal edges generally parallel to the centerline. side 110 of the diaper 20. The chassis 22 of the diaper 20 comprises the main body of the diaper 20. The chassis 22 comprises at least a portion of the absorbent core 28 and preferably an outer layer of cover including the top sheet 24 and the back sheet 26 If the absorbent article comprises a separate support and liner, the chassis 22 generally comprises the support and the liner. (For example, the backing may comprise one or more layers of material to form the outer cover of the article and the liner may comprise an absorbent assembly including a top sheet, a back sheet, and an absorbent core.In these cases, the backing and The liner may include a fastener that is used to hold the liner in place during the entire time of use. For the single absorbent articles, the chassis 22 comprises the main structure of the diaper with other features added to form the composite structure of the diaper. Although top sheet 24, back sheet 26 and chassis 22 can be assembled in a variety of well-known configurations, preferred diaper configurations are generally described in U.S. Patent No. 3,860,003; U.S. Patent No. 5,151,092; and in United States Patent No. 5,221. Other suitable diaper chassis designs are disclosed in United States Patent No. 5,569,232; U.S. Patent No. 5,554,144; U.S. Patent No. 5,554,143; U.S. Patent No. 5,554,145; and in U.S. Patent No. 5,556,394. Each of these references is hereby incorporated by reference herein. The backsheet 26 is generally that part of the diaper 20 positioned adjacent the garment-facing surface of the absorbent core 28, which prevents the exudates absorbed and contained therein from staining the articles that may contact the diaper 20, such as sheets and underwear. In preferred embodiments, the backsheet 26 is impervious to liquids (eg, urine) and comprises a thin plastic film such as a thermoplastic film having a thickness of about 0.012 mm to about 0.051 mm. Suitable backsheet films include those manufactured by Tredegar Industries Inc. of Terre Haute, IN and that are sold under the trade names of X15306, X10962 and X10964. Other materials suitable for the backsheet may include breathable materials that allow vapors to escape from the diaper 20 while still preventing exudates from passing through the backsheet 26. Illustrative breathable materials may include materials such as woven wefts, wefts non-woven, composite materials such as nonwoven webs coated with film, and microporous films such as are manufactured by Mitsui Toatsu Co. of Japan under the designation ESPOIR NO and by EXXON Chemical Co., of Bay City, TX, under the designation EXXAIRE. Suitable breathable composites comprising polymer blends are available from Clopay Corporation, Cincinnati, OH under the name HYTREL blend P18-3097. These breathable composites are described in greater detail in PCT Application No. WO 95/16746, published on June 22, 1995 in the name of E l. DuPont. Other breathable backsheets include nonwoven webs and apertured films that are described in U.S. Patent No. 5,571,096. Each of these references is by "a present incorporated by reference herein. The backsheet 26, or any part thereof, may be elastically extensible in one or more directions. In one embodiment, the backsheet 26 may comprise a film web in the form of a structural elastic ("SELF"). A film web in structural elastic form is an extensible material that exhibits a behavior similar to elastic in the direction of elongation without the use of additional elastic materials. The SELF frame includes a deformable network having at least two contiguous, distinct and different regions. Preferably, one of the regions is configured in such a way that it will exhibit resistance forces in response to an axial elongation applied in a direction parallel to the predetermined axis before a substantial portion of the other region develops significant resistance forces. - - jj "" "- ^^ -" ^ at the applied elongation. At least one of the regions has a surface path length that is greater than that of the other region as measured substantially parallel to the predetermined axis, while the material is in an unstressed condition. The region exhibiting the largest surface path length includes one or more deformations that extend beyond the plane of the other region. The SELF screen exhibits at least two significantly different stages of resistance forces controlled to elongation along at least one predetermined axis when subjected to an elongation applied in a direction parallel to the predetermined axis. The SELF web exhibits first applied elongation resistance forces until the elongation of the web is sufficient to cause a substantial portion of the region having the largest surface path length to enter the plane of the applied elongation, after! which the SELF frame exhibits second resistance forces to the additional wing. The total forces of resistance to elongation are greater than the first strengths of resistance to elongation provided by the first region. The SELF frames suitable for the present invention are more fully described in United States Patent No. 5,518,801, which is incorporated here by reference. In the alternate embodiments, the backsheet 26 may comprise elastomeric films, foams, filaments, or combinations of these or other suitable materials with nonwovens or synthetic films. The backsheet 26 can be attached to the topsheet 24, the absorbent core 28 or any other element of the diaper 20 by any means of attachment known in the art. For example, the attachment means may include a continuous uniform adhesive layer, a patterned adhesive layer, or an array of separate lines, coils, or adhesive spots. A preferred attachment means comprises an open pattern network of filaments of adhesives as disclosed in & amp; & amp; & .- *. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Other suitable fixation means include various lines of adhesive filaments which are twisted in a spiral pattern, as illustrated by the apparatus and methods shown in U.S. Patent No. 3,911,173; U.S. Patent No. 4,785,996; and in U.S. Patent No. 4,842 ,. Each of these patents are incorporated herein by reference. The adhesives that have been found to be satisfactory are manufactured by H.B. Fuller Company of St. Paul, Minnesota and they are marketed as HL-1258. Alternatively, the fastening means may comprise thermal joints, press fittings, ultrasonic joints, mechanical dynamic joints, or any other suitable fastening means or combinations of these fastening means as known in the art. The topsheet 24 is preferably positioned adjacent to the body surface of the absorbent core 28 and may be attached to it and / or the backsheet 26 by any means of attachment known in the art. Suitable attachment means are described above with respect to means for attaching the backsheet 26 to other elements of the diaper 20. In a preterm embodiment of the present invention, the topsheet 24 and the backsheet 26 are directly bonded together at some sites and are indirectly joined together at other sites by joining them together directly to other elements of the diaper 20. The topsheet 24 is preferably docile, of soft feel, and non-irritating to the wearer's skin. In addition, at least a portion of the topsheet 24 is permeable to liquid, allowing liquids to easily penetrate through its thickness. A suitable top sheet 24 can be manufactured from a wide range of materials, such as porous foams; cross-linked foams; plastic films with openings; or woven or non-woven webs of natural fibers (e.g., wood or cotton fibers), synthetic fibers (e.g., polyester or polypropylene fibers), or a ^^ t ^^^ te ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^ combination of natural and synthetic fibers. If the absorbent assemblies include fibers, the fibers may be spunbonded, carded, wet-laid, melt-blown, hydroentangled, or otherwise processed as is known in the art. Another suitable top sheet 24 comprising a length of cut polypropylene fiber web is manufactured by Veratec, Inc. a division of International Paper Company, of Walpole, Massachusetts under the designation P-8. Preferably, the topsheet 24 is made of a hydrophobic material or is treated to be hydrophobic in order to isolate the wearer's skin from the liquids contained within the absorbent core 28. If the topsheet 24 is made from A hydrophobic material, preferably at least the top surface of the topsheet 24 is treated to be hydrophilic in such a way that liquids will transfer through the topsheet more quickly. This decreases the likelihood that the body exudates will flow out of the upper sheet 24 instead of being drawn through the upper sheet 24 and absorbed by the absorbent core 28. The upper sheet 24 can be hydrophilic by treating it with a surfactant or by incorporating a surfactant into the top sheet. Suitable methods for treating the topsheet 24 with a surfactant include spraying the top sheet material 24 with the surfactant and immersing the material in the surfactant. A more detailed discussion of said treatment and hydrophilic capacity is contained in the patent of the States U.S. No. 4,988,344 and U.S. Patent No. 4,988,345. A more detailed discussion of some suitable methods for incorporating the surfactant into the topsheet can be found in the United States statutory invention record No. H1670, published on the 1st. July 1997 in the name of Aziz and others. Each of these references is hereby incorporated by reference herein. Any portion of the topsheet 24 may be coated with a lotion as is known in the art. Examples of suitable lotions include ^ * ". . ... ... ... ^ .. ^. t- -. .M-. - ^ É ^ É ^^^, ^. »A¡ & ^, ... -. - i - * ¡u-? t those described in U.S. Patent No. 5,607,760; U.S. Patent No. 5,609,587; U.S. Patent No. 5,635,191; and in U.S. Patent No. 5,643,588. The topsheet may also include or be treated with antibacterial agents, some examples of which are disclosed in PCT Publication No. WO 95/24173 entitled "Absorbent articles containing antibacterial agents in the upper sheet for odor control" which It was published on September 14, 1995, in the name of Johnson. In addition, the topsheet 24, the backsheet 26, or any portion or portion of the topsheet or the backsheet may be finished in highlight and / or dull to provide a more fabric-like appearance. The absorbent core 28 may comprise any absorbent material that is generally compressible, capable of forming, non-irritating to the wearer's skin, and capable of absorbing and retaining liquids such as urine and other exudates from the body. The absorbent core 28 can be manufactured in a wide variety of sizes and shapes (eg, rectangular, hourglass, asymmetric "T.", etc.) and can comprise a wide variety of liquid absorbent materials. commonly used in disposable diapers and other absorbent articles such as wood pulp, which is generally referred to as an air locker. Examples of suitable absorbent material include pourable cellulose wadding, meltblown polymers, including coform; chemically hardened, modified or interlaced cellulosic fibers; tissue, including tissue wraps and tissue laminates; absorbent foams; absorbent sponges; superabsorbent polymers; gelling absorbent materials; or any other known absorbent material or combinations of materials. The configuration and construction of the absorbent core 28 can also be varied (e.g., the core or absorbent cores or other absorbent structures or structures may have zones with variable gauge, a hydrophilic gradient, a A. ^ ^^. ^ M? S? ^^ Míiai ^ ...... h ^ si ^, ^ superabsorbent gradient, or acquisition zones with lower average density and lower average basis weight; or may comprise one or more layers or structures). However, the total absorbent capacity of the absorbent core 28 must be compatible with the design load and intended use of the diaper 20. Illustrative absorbent structures for use as the absorbent assemblies are described in U.S. Patent No. 4,610,678, United States Patent No. 4,673,402; U.S. Patent No. 4,834,735; U.S. Patent No. 4,888,231; U.S. Patent No. 5,137,537; U.S. Patent No. 5, 147,345; and in U.S. Patent No. 5,342,338. Each of these patents is incorporated herein by reference. The diaper 20 can also comprise at least one elastic waist feature 34 which helps to provide the improved fit and containment. The elastic waist feature 34 is generally intended to expand and contract elastically to dynamically adjust to the wearer's waist. The elastic belt feature 34 preferably extends at least longitudinally outward from at least one waist edge of the absorbent core 28 and generally forms at least a portion of the end edge of the diaper 20. Disposable diapers are often constructed to have two elastic waist features, one placed in the first waist region 36 and one positioned in the second waist region 38. In addition, although the elastic waist feature 34 or any of its constituent elements may comprise one or more separate elements attached to the waist region. diaper 20, the characteristic of elastic waist 34 can be considered as an extension of other diaper elements 20, such as the back sheet 26, the top sheet 24, or both the back sheet 26 and the top sheet 24. The elastically cindered lasers 34 can be conslruida in a number of different configurations including those d write them in the patent of the States United No. 4,515,595; U.S. Patent No. 4,710,189; U.S. Patent No. 5,151,092; and in U.S. Patent No. 5,221,274. You will hear proper belt configurations that may include the waist covering features such as those described in US Pat. No. 5,026,364 and in US. Pat. No. 4,816,025. All of the aforementioned references are incorporated herein by reference. The fasteners such as the tabs 40 are fixed to the diaper 20 to secure the diaper around a wearer. As described in more detail below, the tabs 40 are capable of moving from a retracted position of the storage illustrated in Figure 2 to an operating position which is illustrated in Figure 3. As illustrated in Figures 2 and 3 , the tongue 40 includes a first band of the securing tape 47 having an inner face 48 and an outer face 49. The first band of the securing tape 47 has an operating free end 50 and a fixed end 52 which is permanently attached to a marginal portion of the diaper 20, preferably along the backsheet 26. The securing members such as the adhesive coatings are provided on at least one side of the fixed end 52. The securing means on both sides of fixed pattern 52 is desirable when e! The fixed core 52 is sandwiched between the top sheet 24 and the back sheet 26 to distribute the forces therebetween. As shown in Figures 2 and 3, the fixed end 52 with the adhesive coating 62 is provided on the inner face 48 thereof. The end 52 of the first band of the securing tape 47 is affixed to the backsheet 26 by means of the adhesive coating 62 which can be made from a pressure sensitive adhesive composition, a heat-activated or acivated adhesive composition. with solvent, or similar.

The securing means 60 is provided on one side of the operation free exotherm 50. As shown in Figures 2 and 3, the securing means 60 on the free operation end 50 comprises an adhesive coating 61. The adhesive coating 61 is preferably pressure sensitive and coextensive with the free end of operation 50 but for a graspable portion of the distal end 117. The tab 40 further includes the second band of the securing band 67 having inner and outer faces 68 and 69 opposite. The external face 60 of the second band of the securing band 67 is substantially coextensive with, and removably attached to, the first face 48 of the operation free end 50 of the first band of the securing tape 47. The fixing or The connection between the second band of the tape 67 and the free operating end 50 is about as firm as the fixation or connection between the fixed end 52 and the back sheet 26 of luck that the bands 47 and 67 operate in a manner effective as a single tab or band during the initial securing of the diaper. The gripping portion of the distal end 117 of the first band of the fastening tape 4 extends beyond the first end edge 70 of the second band of the fastening tape 67. A continuous adhesive coating 73 is provided along the length of the belt. internal face 68 of the ionicity of the second band of the securing tape 67. The adhesive coating 73 is preferably a pressure sensitive adhesive composition. The detachment means 72 are adapted to be fixed from Removable way to the adhesive coating 73 on the second band of the securing tape 67. In the embodiment illustrated in Figures 2 and 3, the release means 74 are carried by the diaper 20 at a marginal location thereon to provide a detachment region that gives in the same direction with the upper sheet 24.

The second band of the securing tape 67 is detachable from the release means 74 to make the pressure-sensitive adhesive coating 73 available for use in securing the diaper 20 around a baby. Referring to Figure 2 and 3, the first band of the securing tape 47 and the second band of the securing tape 67 are folded around the longitudinal edge 75 of the diaper 20. The second band of the securing tape 67 coactuates with the first band of the securing band 67 and providing the securing means for initially securing the diaper 20 around a baby. The securing means can be moved from the storage position, retracted from Figure 2 in which the adhesive coating 73 is detachably adhered to the release means 74, to the extended, operating portion of Figure 3 in which the adhesive coating 73 on the inner face 68 of the second band the securing tape 67 is available to be used to secure the diaper 20 around a baby. €! adhesive coating 73 gives in the same direction as Sa top sheet 24 of! diaper when the second band of the securing band 67 is in the operating position. Therefore, when the tab 40 is in the extended operating position of Figure 3, the free operating end 50 of the first band of the securing tape 47 is adapted to secure the diaper 20 around a baby by adhesive attachment to the outer surface or rear sheet 26 of the diaper by way of the second band of the securing tape 67 which is carried entirely by the free operation end 50. The free operation end 50 of the first band of the cinia securing 47 is detachable from the second band of the securing band 67 to allow the diaper 20 to be opened or removed from the baby, and to make the coating adhesive 61 on the free operating end 50 of the first band of the securing tape 57 is available for use when reattaching the diaper 20 around rf of a baby. The free operating end 50 of the first band of the securing tape 47 is therefore made detachable from and capable of restraining the second band of the securing band 67 to inspect and / or replace the diaper around it. of a baby. The free operating exotherm 50 is capable of moving from an extended operating position where the free operating exotherm 50 is adhesively secured to the second band of the securing belt 67, to a disengaged position where the free end of operation 50 of the first band of the securing tape 57 is separated from the second band of the securing tape 67 which remains attached to the diaper. The diaper 20 can be fastened with the tab 40 as shown in Figure 3. The fixed strip 52 of the first band of the securing band 57 is adhesively fixed to a corner of the diaper 20. When the tab 40 is unfolded from the The storage position of Figure 2 towards the operative position of Figure 3, the tab 40 is adhesively fastened to an opposite side of the diaper 20 by means of the adhesive coating 73 on the second band of the securing tape 67. The fastening of the first band of the securing tape 47 to the diaper 20 via the second band of the securing tape 67 provides a good means of firm closure around the infant. When the diaper is in its clamped condition, the second band of the securing band 67 is located between the first band of the securing band 47 and the back sheet 26 of the outer surface of the diaper. It is a feature of the present invention that when the diaper needs inspection or adjustment after its original closure has been made, the first band of the securing tape 47 can be separated from the second band of the securing tape 67 without disturbing the adhesive attachment of the second band of the securing tape 67 of the backsheet 26. This can be achieved because the first band of the securing tape 47 is adhesively but removably secured to the second band of the securing tape 67 and not to any portion of the backsheet 26. The attachable strip 117 of the first band of the securing tape 47 extends beyond the edge 70 of the second band of the securing tape 67, to facilitate the separation of the first strip. band of the securing tape 47 of the second band of the securing tape 67. The first band of the securing tape 47 can therefore be separated from the second band of the securing band 67 to open a fastened diaper without resorting to tearing the back sheet 26 or the tongue itself. When the first band of the securing tape 47 is separated from the second band of the securing tape 67, the fixed end 52 of the first band of the securing tape 47 remains secured to one corner of the diaper 20 while the second band of the securing tape 67 remains attached to the opposite corner of the diaper 20 where the original closure was made. The second band of the securing tape 67 acts as a reinforcing agent remaining on the diaper where the original closure was made. The second band of the securing band adds resistance to the diaper area that could otherwise tear when the first band of the securing tape 47 is separated from the second band of the securing tape 67 due to the stresses imposed on the diaper by A separation action When the first and second bands of the tape 47 and 67 are separated from one another, the diaper 20 can be inspected for soiling and / or can be re-adjusted for a better or more natural fit around the infant. When the inspection and / or adjustment is completed, the diaper 20 is wrapped around the baby as originally made and is restrained by placing the first band of the securing tape 47 in an overlap relationship with the second band of the tape. assurance 67 that remains fixed to the opposite corner ^^^^^^^^^ »^^^ t ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ jj ^ g ^ ^^ & ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 20. The adhesive coating 61 at the free operating end 50 of the first band of the securing tape 47 is pressed against the outer face 69 of the second band of the securing tape 67 to complete the closure. Since the operating free end 50 of the first band of the securing tape 47 is longer than the second band of the securing band 67, the attachable end 117 is easy to grasp by making disunions and additional resusions of the diaper convenient for the person. that provides care. The restrained diaper is provided with a firm adhesive fixation because the adhesive material comprising the adhesive coating 61 at the free end of operation 50 remains thereon after the first original closure is broken or interrupted. The strength of the adhesive allows many openings and closures of the diaper As shown in Figures 2 and 3, the release molars 74 may comprise a strip segment or release strip having a release coated surface on the face 82 which provides the release region, and an adhesive coating on the opposite face 84 by means of which the release strip is secured to the top sheet 24. Alternatively, the release means may comprise a release layer which is a surface coating on a marginal position of the top sheet 24, and preferably comprises a release silicone compound, or the like. The release strip or release layer preferably provides a release region of approximately the same width as the tab 40 and is substantially coextensive with the adhesive coating 73 in the second band of the securing tape 67. However, the release region it can have a width greater than the second band of the securing tape 67 to provide manufacturing tolerances.

Although the distance between the end of the band of the securing tape 67 and the edge or longitudinal margin 75 of the diaper is not too critical, the distance preferably should be sufficiently small to preclude substantial adhesion of a juxtaposed region of the back sheet 26 to an exposed adhesive region of the pressure-sensitive adhesive worn on the face 48 when the diaper is releasably secured around a baby by means of the band of the securing tape 67. Undesirable adhesion can also be prevented by placing the tongue 40. in the diaper 20 so that the innermost edge of the fixed end 72 terminates in the longitudinal edge 75. The exposed region of the adhesive on the inner face 48 may also be covered, if necessary or desirable, with a sheet material or film such as polyethylene, polyethylene lerephthalate, cellulose, paper or the like. In the alternative, a glue-free zone may be provided on the exposed region of the face 48 between the adhesive coatings 61 and 62 Still another possibility is to place the release glue 74 in such a way that the outermost end thereof exits beyond the shore of! corduroy! 75 and a projection portion of the release strip 74 covers the exposed adhesive mass. A grasping means 117 is provided to facilitate separation of the release means 74 and the second band of the securing strip 67 to expose the adhesive coating 73 of the second band of the securing belt 67 for securing the diaper around of a baby. When the user pulls the gripping means 117 of the first band of the securing tape 47, the second band of the securing band 67 separates the release means 74 to expose the adhesive coating 73 of the second band of the securing tape. 67, since the adhesive forces between the first band of the securing tape 47 and the second band of the securing tape 67 are more / stronger than the adhesive forces between the second band of the securing tape 67 and the release means 74. The grip means 117 also facilitates the separation of the first band of the securing band 47 from the second band of the securing band 67 when the baby's diaper is removed. The distal end portion 117 of the operation free end 50 of the first band of the securing tape 47 projects beyond the outermost edge 118 of the adhesive coating 61 at the free operation end 50. The projection portion 117 provides a gripping means for separating the adhesive-free free extrude 50 from the first band of the securing band 47 of the second band of the securing band 67. To facilitate the separation of the first and second bands of tape 47 and 67, the outer face 69 of the second band of the securing tape 57 is preferably lightly treated with a release compound to allow a relatively strong adhesive bond between the tape bands while simultaneously enabling the free end of operation 57 of the first band of the securing tape 47 that is separated from the second band of the securing tape 67. Alternately , the second band of the securing tape 67 can be a material having a desired degree of inherent release properties. If desired, the adhesive coatings 61 and 62 in the first band of the securing band 47 may be pressure sensitive and together they comprise a substantially continuous adhesive coating on the inner face 48 of the first band of the securing tape 47. Adhesive tabs suitable for the purposes of the present invention can be made from a wide variety of materials, provided that these materials are sufficiently flexible. Preferred materials for this purpose are polyalkylene webs such as polyethylene sheet, polypropylene sheet, and the like. Particularly preferred are the flares that are oriented along the narrow dimension of the tongue or frames that have filament reinforcements therein. Pressure sensitive layers such as adhesive coatings 61 and 73 are provided by applying a coating of a pressure sensitive adhesive composition known in the art to make the appropriate surfaces of the cinnamine bands 47 and 67. The applied adhesive must have good tack, good adhesion resistance, good moisture resistance and good resistance to aging. Illustrative of these adhesive compositions are mixtures of natural or synthetic rubber, zinc oxide, and various resins, and reliculates of naive or synthetic rubber or water dispersions of sticky acrylic polymers or copolymers, and the like. * Secured release strips can be made from smooth plastic film that has a relatively non-stick surface from paper coated with a silicone release compound, or from materials > similar detachment. A suitable release coating number can be used with the present invention. Figure 4 is an illustration of another embodiment of the fastener of the present invention. The modality of Figure 4 is identical to the previous modalities except for the differences mentioned below. In the embodiment of Figure 4 the fastener 40, shown in the operating position, includes a first band of the securing tape 47 having an inner face 48 and an outer face 49. The first band of the securing tape 47 has an operation free end 50 and a fixed end 52 which is permanently fixed to a marginal portion of the diaper 20 preferably along the backsheet 26. The fixed eximeum 52 is provided with the adhesive coating 62 on the inner face 48 of the same. The fixed strip 52 of the first band of the securing band 47 is fixed to the backsheet 26 by means of the adhesive coating 62 which can be made of a pressure sensitive adhesive composition., a heat-activated or solvent-activated adhesive composition or the like. The securing means 60 is provided on one face of the operation free exotherm 50. As shown in Figure 4, the securing means 60 in the free operation eximetry 50 comprises a plurality of hook 280. The hooks 280 are coextensive with each other. the free operating end 50 but for a convenient portion of the distal end 117. The tab 40 further includes the second band of the securing band 67. The second band of the securing band 67 comprises a material! of curl 270 capable of coupling with hooks 280. The attachment between the second band of tape 67 and the free operation end 50 is at least as firm as the fixation or union between the fixed end 52 and the rear leaf 26 so that the bands 47 and 67 function effectively as a single tab or band during the initial securing of the diaper. The graspable portion of the distal end 117 of the first band of the securing tape 47 extends beyond the first edge. end 70 of the second band of the securing tape 67. A continuous coating of pressure sensitive adhesive 73 is provided along a portion of the inner face 68 of the second band of the securing tape 67. The second band of the securing tape 67 projects beyond an end edge of the pressure-sensitive adhesive coating 73 to provide a finger lifter 300. The finger lifter 300 is provided with Placed at the remote end of the graspable portion of the distal end 117. The diaper 20 may also comprise side panels 30. The side panels 30 may be elastic or ex-sensitive to provide greater comfort and comfort adjustment by initially adjusting the diaper comfortably. 20 to the user and holding this adjustment throughout the time of use even after the diaper 20 has been loaded with the exudates since the elasticated side panels 30 will allow the sides of the diaper 20 to expand and contract. The side panels 30 can also provide greater effective application of the diaper 20 because even if the diapering person pulls an elasticized side panel 30 farther than the other during the application, the diaper 20 will "self-adjust" during the application. use. Although the diaper 20 of the present invention preferably has side panels 30 disposed in the second waist region 38, the diaper 20 can be provided with side panels 30 disposed in the first waist region 36 or both of the The first waist region 36 and the second waist region 38. The side panels 30 can be constructed in any of the suitable configurations. Examples of diapers with elasticized side panels are disclosed in U.S. Patent No. 4,857,067, "Dilated diaper having strapped ears", issued to Wood, et al. On August 15, 1989; United No. 4,381, 781 issued to Sciaraffa, and others on 3rae May 1983; U.S. Patent No. 4,938,753 issued to Van Gompel et al. on July 3, 1990; the hereinabove referred to in United States Patent No. 5,151,092 issued to Buell on September 9, 1992; and in United States Patent No. 5,221, 274 issued to Buell on June 22, 1993; U.S. Patent No. 5,669,897 issued to LaVon, and others on September 23, 1997, entitled "Absorbent articles that provide sustained dynamic adjustments"; U.S. Patent Application Serial No. 08 / 155,048 Tiiulada "Absorbent Article with Extendable Side Panels in Multiple Directions" filed on November 19, 1993 in the name of Robles, et al .; each of which are incorporated herein by reference. 5 The diaper 20 preferably further includes leg flaps 32 which provide improved containment of liquids and other exudates from the body.

,, The leg bends can also be referred to as leg bands, lateral fins, barrier folds or elastic folds. The patent of the United States No. 3,860,003 discloses a disposable diaper that provides a conirable opening for the leg having a lateral wing and one or more elastic members to provide an elastified leg fold (or gusset fold). The patents of the United States Nos. 4,808,178 and 4,909,803 issued to Aziz et al. On February 28, 1989 and March 20, 1990, specifically, disclose disposable diapers having "upright" elastified fins (barrier folds) that provide improved containment of the leg regions. United States Patents Nos. 4,695,278 and 4,795,454 issued to Lawson on September 22, 1987 and Dragoo on January 3, 1989, respectively, describe disposable diapers having double folds, including packing folds and barrier folds. Although the particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, attempts are made to protect the claims. attach all these changes and modifications that are within the scope of this invention,

Claims (6)

1. A fastener (40) comprising: a first band of the securing belt (47) having an operation free ex- treme (50), a securing means (60) on at least one face (48) of the free ex- treme of operation (50); a second band of the securing tape (67) being coextensive with and removably attached to the securing means (60) of the first band of the securing tape (47), and a pressure-sensitive adhesive coating (73) on the second band of the tape (67) on the face thereof opposite the face fixed to said free operating end (50) of the first band of the securing tape (47); and the second securing band (67) being able to move from a storage position in which the second band of the storage belt (67) is releasably adhered to said release means (74). to an operating position; said free operating exotherm (50) of the first band of the securing band (47) being separable from the second band of the assurance band (67) to form the securing means (60) on the free operating end (50) of the first band of the securing tape (47) available for use in resuscitation; and characterized in that the graspable portion (117) of the operation free end (50) projects beyond the respective outermost edges of the release means (74) and the second band of the securing tape (67).

The fastener according to claim 1, wherein said second band of the fastening tape (67) comprises a curl material (270).

3. The fastener according to claim 2, wherein the securing means (60) comprises a plurality of hooks (280) capable of coupling with the terry material. The fastener according to claim 1, wherein the second band of the securing tape (67) projects beyond an end edge of the pressure-sensitive adhesive coating (73) to provide an aid for the finger ( 300). A disposable absorbent article (20) comprising a topsheet (24), a backsheet (26) impervious to moisture substantially coextensive with the topsheet, an absorbent core (28) positioned between the topsheet and the backsheet , and an adhesive tab fastener (40) which comprises: a first band of the securing tape (47) having a free operating end (50); an adhesive coating (62) on at least one face (48) of the > fixed end (52) of the first band of the securing tape by means of which the fixed end of the first band of the securing tape is fixed to the disposable absolute article, and a pressure-sensitive adhesive coating (61) on the face of the free end of operation (50) of the pnmeia band of the securing tape; a second band of the securing tape (67) being coextensive with and adhesively but removably attached to the face coated with adhesive; operating free end (50) of the first band of the securing tape (47), and a pressure-sensitive adhesive coating (73) on the second band of the securing tape (67) on the face of the same opposite to the face fixed to said free operating end (50) of the first band of the securing band (47); and detachment means (74) on the upper sheet (24); ^^ Sj ^^^^^ & Sj ^^^^^^^^^^^^^^^^^^^^ gSJÍ ^^^^^^^^^^ j ^ ^^ géí ' The said second band of the securing tape (67) being able to move from a stowed storage position in which the second band of the storage tape (67) is releasably adhered to said release means. (74) to an operating position in which the second band of the adhesive coated tape is available for use in securing the disposable absorbent article around a baby; said free operating end (50) of the first band of the securing tape (47) being separable from the second band of the securing tape (67) to allow the disposable absorbent article to be removed from a baby and to cause the pressure-sensitive adhesive coating (61) at the free operating end (50) of the first band of the securing tape (47) is available for use in reattaching the disposable absorbent article around a baby; and characterized in that the asible portion (1 17) of! The free end of operation (50) projects beyond the respective outermost edges of the release means (74) and the second band of the securing band (67). The fastener according to claim 5, wherein the second band of the securing tape (67) projects beyond an edge of the pressure sensitive adhesive coating (73) to provide a finger aid ( 300). ? «L ^ y | íMíjj ^ jL ^^^ M | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ u