A dual fastening device suitable for pull-up and cinch use with absorbent articles. The fastening device preferably includes a first fastening member and a second member.
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0. 41. An absorbent article having a first waist region, a second waist region, and a crotch region interconnecting the first waist region and the second waist region, the absorbent article comprising:
a topsheet;
a backsheet; and
a fastening device for joining the first waist region with the second waist region, the fastening device including:
a first fastening member joined to the first waist region, the first fastening member including a first tab and a second tab partially attached to and extending laterally from the first tab, a second fastening member joined to the second waist region;
a first releasable mechanical bond between the first tab and the second fastening member prefastening the first waist region and the second waist region to form at least one leg opening in the article prior to use; and
a second releasable bond between the second tab and the second fastening member, the second releasable bond adapted to maintain the first fastening member in position prior to use;
wherein the first and second waist regions extend at least about 10% under a load of about 20 grams force/centimeter or greater.
0. 33. An absorbent article having a first waist region, a second waist region, and a crotch region interconnecting the first waist region and the second waist region, the absorbent article comprising:
a topsheet;
a backsheet; and
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including:
at least one first fastening member having at least a portion joined to the first waist region, the first fastening member including a first tab and a second tab partially attached to and extending laterally from the first tab;
at least one second fastening member having at least a portion joined to the second waist region;
a releasable mechanical bond between a portion of the first tab and a portion of the at least one second fastening member prefastening the first waist region and the second waist region to form at least one leg opening in the article prior to use; and
a releasable storage fastening bond between a portion of the second tab and a portion of the at least one second fastening member, the releasable storage fastening bond adapted to maintain the first fastening member in position prior to use;
wherein the first and second waist regions are more than about 10% elastomeric or extensible under a load of about 20 grams force/centimeter or greater.
0. 21. An absorbent article having a first waist region, a second waist region, and a crotch region interconnecting the first waist region and the second waist region, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including:
at least one first fastening member at least partially joined to the first waist region, the first fastening member including a first tab and a second tab partially attached to and extending laterally from the first tab;
at least one second fastening member at least partially joined to the second waist region; and at least one stored landing zone;
a releasable mechanical bond between a portion of the first tab and a portion of the at least one second fastening member prefastening the first waist region with the second waist region to form at least one leg opening in the article prior to use; and
a releasable storage fastening bond between a portion of the second tab and the at least one stored landing zone, the releasable storage fastening bond adapted to maintain the first fastening member in a stored position prior to use of the article;
wherein the first and second waist regions are more than about 10% elastomeric or extensible under a load of about 20 grams force/centimeter or greater.
0. 20. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet; and
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the at least one first fastening member is joined to the first waist region, the at least one first fastening member includes, at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab, at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab, a releasable tab to tab bond between the first tab and the second tab, the releasable tab to tab bond having a release load, the at least one second fastening member is joined to the second waist region on the article outer surface;
each first tab fastening element and second tab fastening element are configured to provide an operably secure, fastening engagement with the second fastening member, wherein the first fastening member includes a gripping means.
14. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
the first waist region and the second waist region are prefastened forming at least one leg opening;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab inner surface,
at least one stored landing zone on the article,
a releasable storage fastening bond between the stored landing zone and the first fastening member, the releasable storage fastening bond having a release load,
the second fastening member is joined to the second waist region on the article outer surface;
each first tab fastening element is configured to provide an operably secure, fastening engagement with the second fastening member, wherein the first tab and a portion of the second fastening member are permanently prefastened.
12. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is jointed to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on to the first tab inner surface,
at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab inner surface,
a releasable tab to tab bond between the first tab outer surface and the second tab inner surface, the releasable tab to tab bond having a release load,
at least one second fastening member joined to the second waist region on the article outer surface;
each first tab fastening element and second tab fastening element are configured to provide an operably secure, fastening engagement with the second fastening member, wherein the first fastening member includes a gripping means.
17. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
the first waist region and the second waist region are prefastened forming at least one leg opening;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab inner surface,
at least one stored landing zone on the article,
a releasable storage fastening bond between the stored landing zone and the first fastening member, the releasable storage fastening bond having a release load,
the second fastening member is joined to the second waist region on the article outer surface;
each first tab fastening element is configured to provide an operably secure, fastening engagement with the second fastening member, wherein the first and second waist regions are more than about 10% elastomeric or extensible under a load of about 80 20 grams force/centimeter or greater.
15. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
the first waist region and the second waist region are prefastened forming at least one leg opening;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab inner surface,
at least one stored landing zone on the article,
a releasable storage fastening bond between the stored landing zone and the first fastening member, the releasable storage fastening bond having a release load,
the second fastening member is joined to the second waist region on the article outer surface;
each first tab fastening element is configured to provide an operably secure, fastening engagement with the second fastening member, wherein the first fastening member includes at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening member on the second tab inner surface.
13. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab inner surface,
at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab inner surface,
the second fastening member is joined to the second waist region on the article outer surface and includes at least one attachment landing zone; wherein
when the at least one first tab fastening element and the attachment landing zone are fastened, a first waist hoop is formed,
wherein the article is positioned at a target article location and the at least one second tab fastening element is fastened to the attachment landing zone, a second waist hoop is formed, a ratio of the second waist hoop to the first waist hoop is from about 0.55 to about 0.95, wherein the article is a diaper, or pull-up.
3. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on to the first tab inner surface,
at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab inner surface,
a releasable tab to tab bond between the first tab outer surface and the second tab inner surface, the releasable tab to tab bond having a release load,
at least one second fastening member joined to the second waist region on the article outer surface;
each first tab fastening element and second tab fastening element are configured to provide an operably secure, fastening engagement with the second fastening member, wherein a first releasable fastening bond between the first tab fastening element and the second fastening member has a release load that is greater than the releasable tab to tab bond release load.
0. 47. An absorbent article having a longitudinal axis, a first waist region, a second waist region, and a crotch region interconnecting the first waist region and the second waist region, the absorbent article comprising:
a topsheet;
a backsheet; and
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member and at least one second fastening member;
the at least one first fastening member is joined to the first waist region, the at least one first fastening member includes:
a first tab fastening element and a second tab fastening element on an inner surface of the first fastening member;
the at least one second fastening member is joined to the second waist region, the at least one second fastening member includes:
a first zone and a second zone, the first and second zones are formed on discrete and separate surface portions of the second fastening member;
a releasable mechanical bond between the first tab fastening element and the first zone, the releasable mechanical bond is prefastened to form at least one leg opening; and
a releasable storage fastening bond between a portion of the second tab fastening element and the second zone, the releasable storage fastening bond adapted to maintain at least a portion of the first fastening member in a stored position prior to use;
wherein the first and second waist regions are more than about 10% elastomeric or extensible under a load of about 20 grams force/centimeter or greater.
1. An absorbent article having a first waist region, a second waist region and a crotch region interconnecting the first waist region and second waist region, an article inner surface and an article outer surface, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including at least one first fastening member, and at least one second fastening member;
the first fastening member is joined to the first waist region, the first fastening member includes,
at least one first tab, the first tab including a first tab inner surface, a first tab outer surface, and a first tab fastening element on to the first tab inner surface,
at least one second tab, the second tab including a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab inner surface,
a releasable tab to tab bond between the first tab outer surface and the second tab inner surface, the releasable tab to tab bond having a release load,
at least one second fastening member joined to the second waist region on the article outer surface;
each first tab fastening element and second tab fastening element are configured to provide an operably secure, fastening engagement with the second fastening member, wherein the fastening device includes at least one stored landing zone on the article inner surface, a releasable storage fastening bond between the stored landing zone and the first fastening member, the releasable storage fastening bond having a release load that is less than the releasable tab to tab bond release load.
0. 27. An absorbent article having a first waist region, a second waist region, and a crotch region interconnecting the first waist region and the second waist region, the absorbent article comprising:
a topsheet;
a backsheet;
a fastening device for joining at least a portion of the first waist region with at least a portion of the second waist region, the fastening device including:
two first fastening members, each of the first fastening members having at least a portion joined to the first waist region, and each of the first fastening members including a first tab having a first tab fastening element and a second tab partially attached to and extending laterally from the first tab, the second tab having a second tab fastening element; and
a second fastening member having at least a portion joined to the second waist region, the second fastening member having at least one stored landing zone and at least one attachment landing zone;
a releasable mechanical bond between a portion of each first tab and a respective portion of the second fastening member prefastening the first waist region and the second waist region to form two leg openings and a first waist hoop in the article prior to use; and
a releasable storage fastening bond between a portion of each second tab and the at least one stored landing zone, the releasable storage fastening bond adapted to maintain each first fastening member in a stored position prior to use of the article and to permit each first fastening member to be repositioned from the stored position;
wherein the first tabs are configured to provide fastening engagement with the attachment landing zone to form a second waist hoop upon being repositioned from the stored position; and
wherein the first and second waist regions are more than about 10% elastomeric or extensible under a load of about 20 grams force/centimeter or greater.
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The present invention relates to an improved fastening device for absorbent articles such as diapers, training pants, and pull-ups. More particularly, the present invention relates to improved fasteners for joining the front of a disposable absorbent article to the rear of the article with an improved combination of application ease and fit.
Conventional absorbent articles, such as disposable diapers and training pants have typically employed adhesive or mechanical fasteners which attach appointed waistband sections of the articles around a wearer's waist. In addition, various configurations of waist elastics, leg elastics, and elasticized outercovers have been used on absorbent articles to help produce and maintain the article about the body contours of the wearer.
Conventional absorbent articles, such as those described above, have not provided desired levels of reliable fit, and have been susceptible to excessive sagging and drooping during wearing. The articles have not adequately maintained the desired levels of fit, comfort and ease of use. Where the garment has been constructed with more aggressive fasteners to better maintain the desired fit, undesirable skin marking and/or a difficult to remove article may result. As a result, there has been a continued need for garments having more consistent fit, greater resistance to sagging and drooping, and greater ease in the application and removal of the article. Accordingly, it is an object of the present invention to provide an improved article fastening device.
An absorbent article having a first waist region, a second waist region and a crotch region. The crotch region interconnects the first waist region and second waist region. The absorbent article includes an article inner surface, an article outer surface a topsheet, a backsheet, and an absorbent core interposed between the topsheet and the backsheet and a fastening device. The fastening device joins at least a portion of the first waist region with at least a portion of the second waist region. The fastening device includes at least one first fastening member, and at least one second fastening member. The first fastening member is joined to the first waist region. The first fastening member includes at least one first tab. The first tab includes a first tab inner surface, a first tab outer surface, and a first tab fastening element on the first tab inner surface, and at least one second tab. The second tab includes a second tab inner surface, a second tab outer surface, and a second tab fastening element on the second tab inner surface. The fastening device is designed to allow an article user to hold one element of the fastening device such as the first tab, and connect the first and second waist regions in at least two places. This is achieved through manipulation of bond strengths between the fastening device elements. The fastening device includes means for providing a releasable combined tab fastening bond strength between the first tab outer surface and the second tab inner surface. A second fastening member is joined to the second waist region on the article outer surface and includes at least one attachment landing zone. Each first tab fastening element and second tab fastening element are configured to provide an operably secure, fastening engagement with the attachment landing zone. The fastening device may include at least one stored landing zone on the article inner surface and means for providing a releasable storage fastening bond strength between the stored landing zone and the first fastening member. The releasable storage fastening bond strength may be less than the releasable combined tab fastening bond strength. The fastening device may include a means for providing a first releasable fastening bond strength between the first tab fastening element and the attachment landing zone that is stronger than the means for providing the releasable combined tab fastening bond strength. A means for providing a second releasable fastening bond strength between the second tab fastening element and the attachment landing zone may be greater than or equal to the means for providing the first releasable fastening bond strength.
While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter which is regarded as forming the present invention, it is believed that the invention will be better understood from the following description which is taken in conjunction with the accompanying drawings in which like numerical designations are used to designate substantially identical elements, and in which:
While this specification concludes with claims particularly pointing out and distinctly claiming that which is regarded as the invention, it is anticipated that the invention can be more readily understood through reading the following detailed description of the invention and studying the included drawings.
The present invention provides a pull-up and cinch dual fastener fastening system. Various aspects of the invention are herein described in terms of an absorbent article such as a diaper 20 as shown in FIG. 1. However, it is readily apparent that the present invention may also be used to fasten other wearable articles such as disposable absorbent training pants, incontinence briefs, incontinence undergarments, and any other article wherein a fastening device with the characteristics herein disclosed is desired.
Definitions
As used herein, the following terms have the following meanings:
“Absorbent article” refers to devices that absorb and contain liquid, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body.
“Disposable” is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).
“Disposed” is used to mean that an element(s) is formed (joined and positioned) in a particular place or position as a unitary structure with other elements or as a separate element joined to another element.
A “unitary” absorbent article refers to absorbent articles which are formed of separate parts united together to form a coordinated entity so that they do not require separate manipulative parts like a separate holder and liner.
“Diaper” refers to an absorbent article generally worn by infants and incontinent persons about the lower torso.
“Impermeable” generally refers to articles and/or elements that are not penetrative by fluid through the entire z-directional thickness of the article under pressure of 0.14 lb/in2 or less. Preferably, the impermeable article or element is not penetrative by fluid under pressures of 0.5 lb/in2 or less. More preferably, the impermeable article or element is not penetrative by fluid under pressures of 1.0 lb/in2 or less.
“Operatively associated” refers to elements which are directly or indirectly joined together so as to function generally as a single element.
“Attached” or “Joined” encompasses configurations whereby an element is directly secured to another element by affixing the element directly to the other element, and configurations whereby an element is indirectly secured to another element by affixing the element to intermediate member(s) which in turn are affixed to the other element.
“Directly joined” refers to elements which are joined to each other without any intermediate elements joined therebetween, except for the means joining the elements (e.g. the adhesive).
“Indirectly joined” refers to elements joined with each other by means of an element or elements other than the joining means.
“Target circumference” is the circumference of a wearer's waist at the location where the article is designed to be applied about the wearer an secured during use.
“Comprise,” “comprising,” and “comprises” is an open ended term that specifies the presence of what follows e.g. a component but does not preclude the presents of other features, elements, steps or components known in the art, or disclosed herein.
“Engagement” refers to the process by which two fastening elements are fastened.
“Releasable bond” refers to a potentially temporary connection between two or more article components that may be separated during the use of the article.
“Bond strength” or “release load” refers to the minimum amount of force necessary to separate a releasable bond in a time period and fashion consistent with normal use of the article.
“Fastened” refers to the proper connection or attachment of two fastening elements in a fashion consistent with that expected during normal use of the article.
The chassis 22 of the diaper 20 in
The topsheet 24 in
The absorbent core 28 in
Exemplary absorbent structures for use as the absorbent assemblies are described in U.S. Pat. No. 4,610,678 entitled “High-Density Absorbent Structures” issued to Weisman et al. on Sep. 9, 1986; U.S. Pat. No. 4,673,402 entitled “Absorbent Articles With Dual-Layered Cores” issued to Weisman et al. on Jun. 16, 1987; U.S. Pat. No. 4,834,735, entitled “High Density Absorbent Members Having Lower Density and Lower Basis Weight Acquisition Zones”, issued to Alemany et al. on May 30, 1989; U.S. Pat. No. 4,888,231 entitled “Absorbent Core Having A Dusting Layer” issued to Angstadt on Dec. 19, 1989; U.S. Pat. No. 5,137,537 entitled “Absorbent Structure Containing Individualized, Polycarboxylic Acid Crosslinked Wood Pulp Cellulose Fibers” which issued to Herron et al. on Aug. 11, 1992; U.S. Pat. No. 5,147,345 entitled “High Efficiency Absorbent Articles For Incontinence Management” issued to Young et al. on Sep. 15, 1992; U.S. Pat. No. 5,342,338 entitled “Disposable Absorbent Article For Low-Viscosity Fecal Material” issued to Roe on Aug. 30, 1994; U.S. Pat. No. 5,260,345 entitled “Absorbent Foam Materials For Aqueous Body Fluids and Absorbent Articles Containing Such Materials” issued to DesMarais et al. on Nov. 9, 1993; U.S. Pat. No. 5,387,207 entitled “Thin-Until-Wet Absorbent Foam Materials For Aqueous Body Fluids And Process For Making Same” issued to Dyer et al. on Feb. 7, 1995; U.S. Pat. No. 5,397,316 entitled “Slitted Absorbent Members For Aqueous Body Fluids Formed Of Expandable Absorbent Materials” issued to LaVon et al. on Mar. 14, 1995; and U.S. Pat. No. 5,625,222 entitled “Absorbent Foam Materials For Aqueous Fluids Made From high Internal Phase Emulsions Having Very High Water-To-Oil Ratios” issued to DesMarais et al. on Jul. 22, 1997. Each of these patents is incorporated herein by reference.
The backsheet 26 in
The diaper 20 may also include such other features as are known in the art including leg cuffs, front and rear ear panels, waist cap features, elastics and the like to provide better fit, containment and aesthetic characteristics. Such additional features are well known in the art and are described in U.S. Pat. No. 3,860,003; and U.S. Pat. No. 5,151,092, which are incorporated by reference herein.
In addition, the present invention may be suitable for other diaper embodiments including those disclosed in U.S. Pat. No. 6,010,491 entitled “Viscous Fluid Bodily Waste Management Article” issued Jan. 4, 2000; U.S. Pat. No. 5,873,870 entitled “Fit And Sustained Fit Of A Diaper Via Chassis And Core Modifications” issued Feb. 23, 1999; U.S. Pat. No. 5,897,545 entitled “Elastomeric Side Panel for Use with Convertible Absorbent Articles” issued Apr. 27, 1999; U.S. Pat. No. 5,904,673 entitled “Absorbent Article With Structural Elastic-Like Film Web Waist Belt” issued May 18, 1999; U.S. Pat. No. 5,931,827 entitled “Disposable Pull On Pant” issued Aug. 3, 1999; U.S. Pat. No. 5,977,430 entitled “Absorbent Article With Macro-Particulate Storage Structure” issued Nov. 2, 1999 and U.S. Pat. No. 6,004,306 entitled “Absorbent Article With Multi-Directional Extensible Side Panels” issued Dec. 21, 1999, the disclosures of which are incorporated herein by reference.
In order to keep the diaper 20 in place about the wearer, at least a portion of the first waist region 36 is attached by the fastening device 41 to at least a portion of the second waist region 38, preferably to form leg opening(s) 10 and an article waist 35 as shown in FIG. 2. When fastened, the fastening device 41 carries a tensile load around the article waist 35. The fastening device is designed to allow an article user to hold one element of the fastening device such as the first tab, and connect the first waist region 36 to the second waist region 38 in at least two places. This is achieved through manipulation of bond strengths between the fastening device elements.
As shown in
The first fastening member 42 is designed to be joined to the first waist region 36 as shown in FIG. 1. The first fastening member 42 may be joined, operably connected, or attached to the first waist region 36 in any fashion known in the art. The first fastening member 42 may be of any size and/or shape and may be made from any suitable material. The first fastening member 42 may optionally form an extension from the first waist region 36 in the traverse axis 110 direction. Any portion of the first fastening member 42 may be elastic, inelastic, extensible, or non-extensible. Preferably, the direction of elasticity or extensibility is in the traverse axis 110 directions. The first fastening member 42 may be composed of any suitable materials known in the art. For example, the first fastening member 42 material may be composed of a film or a nonwoven including a spunbonded nonwoven fabric, a spunbond-meltblown-spunbond fabric, a neck-bonded-laminate fabric material, a stretch-bonded-laminate fabric material or the like, as well as combinations thereof as know to those skilled in the art. The first fastening member 42 may include at least one first tab 51 and at least one second tab 61.
The first fastening member 42 is shown on the left side of
As shown in
The first tab 51 and the second tab 61 may be located anywhere in the first waist region 36. The first tab 51 may be preferably located directly under of the second tab 61 such that the first tab outer surface 53 faces the second tab inner surface 62 as shown in
As shown in
A releasable tab to tab bond 81 is designed to act between the first tab 51 and the second tab 61. The releasable tab to tab bond 81 may be located anywhere on the first tab 51, the second tab 61, or both. As shown in
The releasable tab to tab bond 81 has a release load which is the load required to release the releasable tab to tab bond 81, allowing the first tab 51 and the second tab 61 to separate. The release load may also be referred to as bond strength. The separation is designed to occur between the first tab outer surface 53 and the second tab inner surface 61. Generally, the release load should be measured relative to how the fastening device 41 will normally be used and released. This would suggest that the release load should be measured as a peel load at any angle out of the plane of the article inner surface 271. The peel load should be measured only once on the first release of the tab to tab bond release load since the releasable tab to tab bond 81 may be designed to have the strongest release load during the first release.
A releasable storage fastening bond 82 is designed to act between the stored landing zone 45 and the first fastening member 42. The releasable storage fastening bond 82 may act between the stored landing zone 45 and the first tab fastening element 54 as shown in FIG. 3. The releasable storage fastening bond 82 may also be created between the stored landing zone 45 and the first tab inner surface 52, first tab fastening element 54, second tab inner surface 62, second tab fastening element 64, or a combination thereof. The releasable storage fastening bond 82 may be created by adhesives, cohesives, hook materials, loop materials, snaps, buttons, tabs, slots, magnets and combinations thereof. The releasable storage fastening bond 82 may also be a mechanical bond such as bonds created by ultrasonic, pressure, or thermal energy. The releasable storage fastening bond 82 may have any shape such as a circle, square, rectangle, or triangle.
The releasable storage fastening bond 82 includes a release load which is the load required to release the first fastening member 42 from the stored landing zone 45. Preferably, the releasable storage fastening bond release load is greater than about 50 grams force (gf). A releasable storage fastening bond release load greater than about 50 gf is designed to help maintain the first fastening member 42 in position during manufacturing, packaging, and prior to use by the consumer. Generally, the releasable storage fastening bond release load should be less than the releasable tab to tab bond release load. Thus, when the first fastening member 42 is lifted from the storage landing zone 45, the first tab 51 and second tab 61 may be lifted together with the releasable tab to tab bond 81 intact. Releasably bonding the first tab 51 and the second tab 61 together such that they remain connected at this point in the article application process is designed to improve the ease of use of the fastening device 41 in general and specifically the use of the first tab 51.
To assist the user's gripping of the first fastening member 42 during the fastening process, the first fastening member 42 may comprise a gripping means 72 as shown in
As shown in
The first tab 51 and second fastening member 44 are designed to be fastened together by the user. Preferably, the first tab fastening element 54 and the attachment landing zone 91 are fastened as shown in
The first releasable fastening bond 83 has a release load which is the load required to release the first releasable fastening bond 83, allowing the first tab fastening element 54 and attachment landing zone 91 to separate. Preferably, the first releasable fastening bond release load is greater than the releasable tab to tab bond release load. The stronger first releasable fastening bond release load is designed to allow the first tab 51 and second tab 61 to be separated without disengaging the first tab 51 from the attachment landing zone 91.
After the first tab 51 and the attachment landing zone 91 are fastened, the user may fasten the second tab fastening element 64 and the attachment landing zone 91 creating a second releasable fastening bond 84. The second releasable fastening bond 84 may be created from adhesives, cohesives, hook materials, loop materials, snaps, buttons, tabs, slots, magnets and combinations thereof. The second releasable fastening bond 84 may have any shape such as a circle, square, rectangle or triangle.
The second releasable fastening bond 84 has a release load which is the load required to release the second releasable fastening bond 84, allowing the second tab fastening element 54 and attachment landing zone 91 to separate. In one embodiment, the second releasable fastening bond release load is greater than or equal to the first releasable fastening bond release load. A stronger second releasable fastening bond release load may help maintain the article 20 in the desired position on the wearer during use. The first tab fastening element 54 and the attachment landing zone 91 may also remain attached after the second tab fastening element 64 and the attachment landing zone 91 are fastened. Alternatively, the first tab fastening element 54 and the attachment landing zone 91 may release and disengage at any time after the second tab fastening element 64 and the attachment landing zone 91 are fastened.
In one example of the present invention a suitable bond relationship may be created using KN1543 release tape, supplied by 3M Inc., of St Paul, Minn. as the first tab 51 and KN1770 fastening tape, supplied by 3M of St. Paul, Minn. as the second tab 61. The release surface of KN1543 releasably bonds to the adhesive surface of KN1770 to form the releasable tab to tab bond 81. Hook material 960E supplied by Aplix U.S., of Charlotte, N.C. may be used as the hook material for the first tab fastening element 54 and second tab fastening element 64. 3M loop material XPL00008 may be used as the second fastening member 44. Aplix hook material 960E and the adhesive surface of KN1543 releasably bond to the stored landing zone 45 to form the releasable storage fastening bond 82.
During the application of the product about the wearer, the first fastening member 42 may be separated from the stored landing zone 45, as shown on the right side of FIG. 1 and in FIG. 2. The user may then choose any of several means of applying the article 20 to a wearer. One means for applying the article 20 may include placing the article 20, unfastened in the desired wearer waist location and securing the article 20 in place with the second tab fastening element 64 without releasing the releasable tab to tab bond 81. Alternatively, the user may place the article 20 in approximately the desired wearer waist location and attach the first fastening element 54 to the attachment landing zone 91. The user may then refine the article 20 position as desired and cinch the article 20 securely in the desired wearer waist location by fastening the second tab fastening element 64 to the attachment landing zone 91. The desired wearer waist location is generally within about 25 centimeters above or below the wearer's hips and about their waist. More preferably, the desired wearer waist location is generally within about 10 centimeters above or below the wearer's hips and about their waist. Also alternatively, the user may attach the first fastening element 54 to the attachment landing zone 91 about the wearer's legs creating one or more leg openings 10 as shown in FIG. 2. The user may then use the article 20 as a typical pull-up. Once the article 20 is in the desired location about the wearer's waist, it may then be secured in place by fastening the second tab fastening element 64 to the attachment landing zone 91.
The article may also be delivered to the user with at least one first tab fastening element 54 prefastened to the attachment landing zone 91 forming at least one leg opening 10 as shown in FIG. 5. The first tab fastening element 54 may be releasably prefastened to the attachment landing zone 91 with, adhesives, cohesives, hook materials, loop materials, snaps, buttons, tabs, slots, magnets and combinations thereof as are know to those skilled in the art. The first tab fastening element 54 may also be a mechanical bond such as bonds created by ultrasonic, pressure, or thermal energy. The user may then use the article as a pull-up. Alternatively, the user may disconnect the prefastened first tab fastening element 54 and attachment landing zone 91 and use the article 20 as described above. At least one first tab fastening element 54 may also be permanently prefastened to the second fastening member and/or the attachment landing zone 91 with ultrasonics, bonds, heat bonding, adhesives, cohesives, hook materials, loop materials, snaps, buttons, tabs, slots, magnets and combinations thereof as are know to those skilled in the art. Embodiments are contemplated wherein only one first tab fastening element 54 is prefastened and the article is used as a pull-up on one of the wearer's legs and fastened and cinched during the application process on the other leg.
As shown in
As shown in
The fastening system works in conjunction with other elements of the article 20 to create an article waist 35 which can be assembled in different configurations. The article may have a first waist hoop dimension 11 and a second waist hoop dimension 13 that are the same, or different. The article 20 may also have a first waist hoop tension and a second waist hoop tension that are the same, or different. Preferably, the second waist hoop 13 is smaller than the first waist hoop 11. Also preferably, the second waist tension is greater than the first waist tension. This allows improved the ease of application of the product while assuring the product reliably remains in place during wearing.
The first waist hoop tension level is lower than the second waist hoop tension level. This allows the product to be pulled up easily while the product is configured at the first waist hoop tension level, yet reliably remain in place during wearing at the second waist hoop tension level.
The first waist hoop tension level may be about 0 grams force (gf) or greater at the first waist hoop dimension 11. Preferably, the ratio of the first waist hoop tension to the second waist hoop tension is from about 0 to about 0.9
In embodiments in which the first waist hoop dimension 11 and second waist hoop dimension 13 are different, it is preferred to not have too great a difference between the first waist hoop dimension 11 and second waist hoop dimension 13. If the difference is too great, an undue amount of material will have to be gathered by the user in switching between the the first waist hoop dimension 11 and second waist hoop dimension 13. This can inhibit ease of use. Preferably, the waist hoop dimension ratio between the second waist hoop dimension 13 and the first waist hoop dimension 11 is from about 0.55 to about 0.95.
The first waist region 36 and second waist region 38 may be more than about 10% elastomeric or extensible under a load of about 20 grams force/centimeter or greater. The elasticity or extensibility is designed to assist the pull-up and/or cinch of the absorbent article.
The first waist region 36 and second waist region 38 are used herein to differentiate the portions of the article being attached. For simplicity the first fastening member 42 is herein described as being joined to the first waist region 36 and the second fastening member 44 is herein described as being joined to the second waist region 38. However, the two regions and two fastening members are generally interchangeable, e.g. the second fastening member could be located on the first waist region in alternate embodiments. The present invention may be readily adapted to many product forms and is intended to cover all such changes and modifications that are within the scope of this invention in the following claims.
Kline, Mark James, Hargett, Mark Mason, Magee, Luke Robinson
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