CA2194679A1 - Rounded corner fastening tab diaper closure - Google Patents
Rounded corner fastening tab diaper closureInfo
- Publication number
- CA2194679A1 CA2194679A1 CA002194679A CA2194679A CA2194679A1 CA 2194679 A1 CA2194679 A1 CA 2194679A1 CA 002194679 A CA002194679 A CA 002194679A CA 2194679 A CA2194679 A CA 2194679A CA 2194679 A1 CA2194679 A1 CA 2194679A1
- Authority
- CA
- Canada
- Prior art keywords
- fastening tab
- diaper
- fastening
- tab
- bond region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
- A61F13/58—Adhesive tab fastener elements
Abstract
A fastening tab for a disposable diaper having a second half (3) with a maximum width y and a first half (2) with a minimum width x. Side edge portions are provided with no sharp corners. First half side edges (7 and 7') and the adjacent second half side edges (8 and 8', respectively) are inverted mirror images of each other taking the transverse line (10) which separates the two halves (2 and 3) as the plane of reflection. Using the bisecting longitudinal center line (12) as the plane of reflection a first side edge (7 and 8) is a mirror image of the opposing side edge (7' and 8'). The tape provides a maximum peel front at the distal end of the attached fastening tab providing a more secure closure and is capable of being cut from a stock roll in a repeating pattern without any waste.
Description
.
2~4679 WO 96/039S4 PCT/I~S9S/07069 ~1 Backaround and Field of the Invention The invention concerns a fastening tab for a diaper, or the like, particularly, a pressure-sensitive adhesive diaper fastening tape or 10 1 "e~:l Idl ,iual fastener element.
Most conventional diaper fastening tabs are pressure-sensitive adhesive tapes o m l l~ul Idl ,ical fastening elements that are rectangular in shape. This regular shape has the advantage in that it is easily converted (e.g., cut) from a stock roll or web into the individual fastening tabs and 15 attached to the diaper, for example, as described in U.S. Patent No.
Most conventional diaper fastening tabs are pressure-sensitive adhesive tapes o m l l~ul Idl ,ical fastening elements that are rectangular in shape. This regular shape has the advantage in that it is easily converted (e.g., cut) from a stock roll or web into the individual fastening tabs and 15 attached to the diaper, for example, as described in U.S. Patent No.
3,848,594. However, this design is limited in terms of the fastening ul Idl dUIt~ .liu:~ uLIdil Idble with a given pressure-sensitive adhesive or "e~hani.,dl fastener hook and loop structure.
An all~llldlNc fastening tab design to the conventional rectangular 20 shape is described in UK Patent Application No. 2 185 383 A. In this patent, the free end (the end attached by the user) of the diaper fastening tab tapers from its outermost peripheral end to its base, where the width is d,u~JIuAillldl~ly that of the manufacturer's bond end of the fastening tab. A
problem with this type of construction or design is that the distal end of the 25 user-applied free end of the fastening tab can be removed at relatively low peel forces, making the tab more easily removable by the infant and increasing the potential for tab failure.
A fastening tape tab structure i"cu"uùrdLi"9 features of the rectangular tab and that of UK Patent Application No. 2 185 383 A is 30 described in European Patent Application No. 379 850. In this patent a,c,,ul;~ dlio,), the distal end of the diaper fastening tape tab free end is generally free of adhesive in a small tapered distal end portion of the free end tapers. The remaining user applied free end portion of the diaper 2 1 ~4~,.7q 4 rC~r/l~S95/07069 1--5 fastening tape tab has a conventional rectangular shape. The advanta~e of the tapered adhesive-free distal end portion, of the fastening tape tab free end, is the reduction of sharp corners that children might accide"'.A::y cut themselves upon. The pe, ru", lal ,.,e of the tape tab described in this patent would not be suL,~Idl lLi~.:'y different from that of cc."~,. ,liu~ Idl 10 fastening tapes. Further, significant waste product would be created in the manufacture of these diaper tape tabs from a standard adhesive-coated stock roll or web.
An approach similar to that in European Patent Application No. 379 850 is described in UK Patent Application No. 2 206 506 A. A rounded 15 end is similarly provided to protect against irritation from sharp comers to either the parent or the baby. This design would likewise have the limitations of European Patent Application No. 379 850.
Recently issued U.S. Patent No. 5,312,387 describes a diaper fastening tab with a rectangular manufacturers bond end and a rounded 20 free end. The rounded free end has a maximum width x-y at a distal half and a minimum width y at a proximal half. The fastening tab can be continuously cut from a roll of stock material with little or no tape waste.
The design provides a maximum peel force resistance at the distal end of the fastening tape tab dec, t:a~i"g the potential for tape pop off. This 25 design, although advantageous, is difficult for some diaper manufacturers to implement due to the required tape width and can provide some sharp corners on the manufacturers bond end.
There continues to be a need for improved diaper fastening tab designs from the prospective of user r, i~" ,ess, pe, ru", Idl ~,e, 30 manufacturability and cost. The invention is directed at providing a novel fastening tab design which is advantageous in terms of all these perspectives. Particuiarly, the novel fastening tabs can be readily cut from W096/03954 ~ ~4~7~ P~ g .
5 a stock roll without creation of waste and provide fastening tabs with improved peel pe, fu, " Idl ,ce relative to conventional tab designs.
SummarY of the Invention In d~,CUI ddl ,ce with the invention, a diaper fastening tab is provided 10 having a first half, having a manufacturer's bond region, with a minimum width x and a second half, having a user's bond region, with a maximum width y, where y is greater than x. Minimum width x is at least 5 mm and the first half has a shape such that the side edge of the first half is an inverted mirror image of the directly adjacent second half side edge. This 15 allows the fastening tab to be continuously cut as a repeating pattern from a single roll of stock material with little or no waste product. The first and second half side edges have no sharp corners, and preferably have no portion with a radius of curvature of less than 0.5 mm, oetween the points where the two side edges intersect the end edges or a distal end fingerlift 20 region.
The invention tab design provides increased peel resistance at the distal end of the tab, deu, e:d5il ~9 the potential for pop off or inadvertent removal. The overall tab design provides novel fastening tab shapes in both the manufacturer's bond region and the user's bond region. These 25 novel shapes provide improved peel pe,ru""c",ce in the users bond region over cu" Il~dl dL,le rectangular conventional tabs, with the same cross-sectional area with no sharp edges or corners along the fastening tab side edges.
30 Brief DescriPtion of the Drawinas FIGS. 1 a and 1 b are a plan views of two e, I ,L,odi" ~"ts of a fastening tab of the present invention.
WO 96/03954 2 ~ 9 4 6 7 ~ PCT/I~S95107069 FIG. 2 is a r, d~ e~ lldry plan view showing the pattern from which the fastening tab of FIG. 1 is cut from a length of stock material.
Detailed DescriDtion of the Invention A diaper fastening tab of the invention 1 is shown in FIG. 1a. The fastening tab is divided into a first half 2 and a second half 3. At least a portion of the first half 2 is attached to a diaper (not shown) side edge by the manufacturers bond region, by a fastening surface 17 of conventional means, such as a pressure-sensitive adhesive, a hot-melt adhesive, sonic bonding, or the like. The second half 3 is provided with a user's bond region including a fastening surface 18, which will adhere to a suitable dlld~ l surface on the front or frontal portion of the diaper (not shown).
The fastening surface 18 on the second half 3 can be created by a suitably formulated pressure-sensitive adhesive, a l l l~.,h dl li~dl fastener, or a cohesive adhesive, which is removable, from both a protective release surface (e.g., a release tape or film) and the diaper dlldl,l 111 ,e"l surface.
The first half 2 and second half 3 are separated by an imaginary transverse line 10. In the preferred e",L,oli",t:nl, the first half side edges (7 and 7') and the directly adjacent second half side edges (8 and 8', respectively) are inverted mirror images of each other taking the transverse line 10, which separates the two halves (2 and 3), as the plane of reflection. Further, using the bisecting longitudinal center line 12 as the plane of reflection a first side edge(7 and 8) is a mirror image of the opposing side edge(7' and 8').
The top edge 9 is a mirror image taking longitudinal center line 12 as the plane of reflection the same would be true for bottom edge 14.
Preferably top edge 9 and bottom edge 14 and are parallel to each other over the major portion of their extents. In a preferred e"lbodi",e"l the top edge 9 joins with the two side edges at a angle of 90 degrees or more, WO 9C103954 2 t 9 4 6 7 q PCT/US95/07069 5 preferably 135 degrees or more, where the an31e at which the two side edges join the bottom edge plus the angle at which the two side edges join the top edge equals 180 degrees.
In another preferred dl I dl 19el 1~111, as shown in FIG. 1 b, the second half 3 is provided with an adhesive-free, or other fastener-free, surface 15, ~- 10 Surface 15 provides a fingerlift region used to facilitate grasping of the fastening tab second half 3 by the user to remove the fastening tab user's bond region fastening surface 18 from, for example, a release tape attached to the diaper or the diaper dlld-,l 111 n:l ~t surface.
This fingerlift region 15 can be provided by leaving a terminal 15 portion of fastening tab 1 ' without adhesive or other fastening means as shown in Fig. 1 b. Alten IdLi-CIy~ if the fastening surface 18 is a pressure-sensitive adhesive, terminal end portion of the second half could be folded onto fastening surface 18 to provide the fingerlift. In this case preferably the end portion folded onto itself is rectangular (i.e., the side edges join the20 top edge at a 90 degree angle and the side edges in this folded terminal end portion are parallel).
The overall design of the fastening tape tab described in Figs. 1a and 1 b permits easy cutting, e.g., die cutting, of multiple fastening tabs from a stock length 20 of fastening material, as shown in FIG. 2 The 25 structure of the side edge 24 of this stock material would provide the structure of both the top and bottom edges 9 and 14, respectively. The fastening surface 18 is provided by any suitable uu".~,. ILiOndl fastening material as described above. However, if the fastenin3 surface 18 is a pressure-sensitive adhesive, the dLIdl,l 111 len 11 surface on the frontal portion 30 of the diaper is preferably reinforced in some known manner to prevent tearing of the diaper backsheet when the user's bond region is removed from the diaper frontal portion. If the fastening surface 18 is a hook or loop-type material, the dLla(,l 111 len 1I surface on the front of the diaper must W0 96/03954 2 ~ 9 ~ 6 7 ~ r~ u69 5 be formed from a matching hook or loop material. Any matchins hook and/or loop-type material would be suitable. Similarly, with a cohesive sdhesive on the fastening surface 18, the dlld~ llelll surface on the frontal portion of the diaper would have to be provided with a mating cohesive adhesive surface.
Pressure-sensitive or cohesive adhesives can be solvent coated or hot-melt coated onto a backing such as a film, nonwoven web, paper, coated paper or a woven fabric to form the diaper fastening tab user's bond region fastening surface 18. The same, or different, pressure-sensitive adhesives can be used on the manufacturer's bond region fastening surface 17 for pelllldllt:lll dLld~.lllllt:lll to a side edge region of a diaper. Mechanical fastener elements (for the fastening surface 18) can be formed directly on a fastening tab backing or applied as a separate element to the backing by suitable .,u"~. Iliul Idl bonding methods, such as a pressure-sensitive adhesive coating.
The second half 3 has a maximum width y, which is larger than _.
This maximum width y is located between top end 9 and bisecting centerline 10, i.e., in the second half 3.
The maximum width y is preferably located at a distance s of at least 1 .û mm from the top edge 9, most preferably at least 2.0 to 5.0 mm, from top edge 9. The distance s is preferably less than t, where is the distance from maximum width y to the transition line (or area) 6 between fastening surface 18 and fastening surface 17. If the fastening surface is divided into a distal half 4 and a proximal half 5 this It:ld~iUI l:~hi~.! provides a fastening tab users bond region with a maximum peel force at a distal half 4 of the fastening surface 18 creating a more secure bond to the diaper dlla~ 1 IL surface, when compared to a conventional fastening tab with similar surface area. VYith preferred e",bo.li",e"l~, the maximum width y is WO 96/039!i4 ~ 4 ~ 7 q r~
at least 1.2 times _, more preferably 1.5 to 2.0 times_, with y being at least about 1 cm.
Compared to conventional rectangular fastening tab users bond regions of equivalent cross-sectional area, the fastening tab users bond regions of the invention provide improved peel force resistance at the distal half 4 of the fastening tab users bond region. The invention fastening tab also minimizes the potential for inadvertent fastening tab removal or fastening tab pop off. Once the initial peel force maximum is overcome by the parent, the remaining portion of the fastening tab can be opened at forces at, or below, those of a conventional rectangular fastening tab of equivaient users bond region surface area.
The manufacturer's bond region fastening surface 17 minimum width x is at least 5 mm preferably at least 10 mm to prevent twisting of the fastening tab when applied to the diaper. Fastening surface 17 generally is coated with a pressure-sensitive adhesive and the size of surface 17 is d~ ,. " ,i"ed by the shape of fastening tab 1 and the location of sepdl dtil 19 line or area 6 (which generally, ~., ese~ the terminal edge of the diaper to which the fastening surface 17 is attached, however, fastening surface 17 can be a discrete adhesive layer or the like which L~l",i"~ , at line or region 6).
Top edge 9 is generally a flat edge portion with a width less than maximum width y. Further, preferably, the sum of the width of top edge 9 and bottom edge 14 equals the sum of x and y. Top edge 9 generally has a width of at least 5 mm to provide a suitable fingerlift area for a user to grip.
Side edges (7, 7', 8 and 8') have a continuous curved surface providing no sharp corners from the top edge 9 or edge 11 of fingerlift region 15 to the bottom edge 14 or the opposing edge 11'. Preferably, the minimum radius of curvature for this curved surface would be 0.5 mm.
WO96/03954 2 1 9 4~i9 P~ 9 5 However at ed~es 11 and 11' a small corner can be used to provide parallel linear edge portions 19 to facilitate formation of finserlift 15 by turning over of a terminal end portion onto adhesive coated fastening surFace 1 8.
The entire invention fastening tab can be continuously die cut in a 10 repeating pattern from a conventional web or stock roll wlth ess~:"' 'ly no waste product, whlch is advantageous in terms of cost, rnanufacturability (it is difficult to remove small die cut waste pieces cut from a rapidly moving web) and envi,u"",~"~dl concerns.
An all~llldlNc fastening tab design to the conventional rectangular 20 shape is described in UK Patent Application No. 2 185 383 A. In this patent, the free end (the end attached by the user) of the diaper fastening tab tapers from its outermost peripheral end to its base, where the width is d,u~JIuAillldl~ly that of the manufacturer's bond end of the fastening tab. A
problem with this type of construction or design is that the distal end of the 25 user-applied free end of the fastening tab can be removed at relatively low peel forces, making the tab more easily removable by the infant and increasing the potential for tab failure.
A fastening tape tab structure i"cu"uùrdLi"9 features of the rectangular tab and that of UK Patent Application No. 2 185 383 A is 30 described in European Patent Application No. 379 850. In this patent a,c,,ul;~ dlio,), the distal end of the diaper fastening tape tab free end is generally free of adhesive in a small tapered distal end portion of the free end tapers. The remaining user applied free end portion of the diaper 2 1 ~4~,.7q 4 rC~r/l~S95/07069 1--5 fastening tape tab has a conventional rectangular shape. The advanta~e of the tapered adhesive-free distal end portion, of the fastening tape tab free end, is the reduction of sharp corners that children might accide"'.A::y cut themselves upon. The pe, ru", lal ,.,e of the tape tab described in this patent would not be suL,~Idl lLi~.:'y different from that of cc."~,. ,liu~ Idl 10 fastening tapes. Further, significant waste product would be created in the manufacture of these diaper tape tabs from a standard adhesive-coated stock roll or web.
An approach similar to that in European Patent Application No. 379 850 is described in UK Patent Application No. 2 206 506 A. A rounded 15 end is similarly provided to protect against irritation from sharp comers to either the parent or the baby. This design would likewise have the limitations of European Patent Application No. 379 850.
Recently issued U.S. Patent No. 5,312,387 describes a diaper fastening tab with a rectangular manufacturers bond end and a rounded 20 free end. The rounded free end has a maximum width x-y at a distal half and a minimum width y at a proximal half. The fastening tab can be continuously cut from a roll of stock material with little or no tape waste.
The design provides a maximum peel force resistance at the distal end of the fastening tape tab dec, t:a~i"g the potential for tape pop off. This 25 design, although advantageous, is difficult for some diaper manufacturers to implement due to the required tape width and can provide some sharp corners on the manufacturers bond end.
There continues to be a need for improved diaper fastening tab designs from the prospective of user r, i~" ,ess, pe, ru", Idl ~,e, 30 manufacturability and cost. The invention is directed at providing a novel fastening tab design which is advantageous in terms of all these perspectives. Particuiarly, the novel fastening tabs can be readily cut from W096/03954 ~ ~4~7~ P~ g .
5 a stock roll without creation of waste and provide fastening tabs with improved peel pe, fu, " Idl ,ce relative to conventional tab designs.
SummarY of the Invention In d~,CUI ddl ,ce with the invention, a diaper fastening tab is provided 10 having a first half, having a manufacturer's bond region, with a minimum width x and a second half, having a user's bond region, with a maximum width y, where y is greater than x. Minimum width x is at least 5 mm and the first half has a shape such that the side edge of the first half is an inverted mirror image of the directly adjacent second half side edge. This 15 allows the fastening tab to be continuously cut as a repeating pattern from a single roll of stock material with little or no waste product. The first and second half side edges have no sharp corners, and preferably have no portion with a radius of curvature of less than 0.5 mm, oetween the points where the two side edges intersect the end edges or a distal end fingerlift 20 region.
The invention tab design provides increased peel resistance at the distal end of the tab, deu, e:d5il ~9 the potential for pop off or inadvertent removal. The overall tab design provides novel fastening tab shapes in both the manufacturer's bond region and the user's bond region. These 25 novel shapes provide improved peel pe,ru""c",ce in the users bond region over cu" Il~dl dL,le rectangular conventional tabs, with the same cross-sectional area with no sharp edges or corners along the fastening tab side edges.
30 Brief DescriPtion of the Drawinas FIGS. 1 a and 1 b are a plan views of two e, I ,L,odi" ~"ts of a fastening tab of the present invention.
WO 96/03954 2 ~ 9 4 6 7 ~ PCT/I~S95107069 FIG. 2 is a r, d~ e~ lldry plan view showing the pattern from which the fastening tab of FIG. 1 is cut from a length of stock material.
Detailed DescriDtion of the Invention A diaper fastening tab of the invention 1 is shown in FIG. 1a. The fastening tab is divided into a first half 2 and a second half 3. At least a portion of the first half 2 is attached to a diaper (not shown) side edge by the manufacturers bond region, by a fastening surface 17 of conventional means, such as a pressure-sensitive adhesive, a hot-melt adhesive, sonic bonding, or the like. The second half 3 is provided with a user's bond region including a fastening surface 18, which will adhere to a suitable dlld~ l surface on the front or frontal portion of the diaper (not shown).
The fastening surface 18 on the second half 3 can be created by a suitably formulated pressure-sensitive adhesive, a l l l~.,h dl li~dl fastener, or a cohesive adhesive, which is removable, from both a protective release surface (e.g., a release tape or film) and the diaper dlldl,l 111 ,e"l surface.
The first half 2 and second half 3 are separated by an imaginary transverse line 10. In the preferred e",L,oli",t:nl, the first half side edges (7 and 7') and the directly adjacent second half side edges (8 and 8', respectively) are inverted mirror images of each other taking the transverse line 10, which separates the two halves (2 and 3), as the plane of reflection. Further, using the bisecting longitudinal center line 12 as the plane of reflection a first side edge(7 and 8) is a mirror image of the opposing side edge(7' and 8').
The top edge 9 is a mirror image taking longitudinal center line 12 as the plane of reflection the same would be true for bottom edge 14.
Preferably top edge 9 and bottom edge 14 and are parallel to each other over the major portion of their extents. In a preferred e"lbodi",e"l the top edge 9 joins with the two side edges at a angle of 90 degrees or more, WO 9C103954 2 t 9 4 6 7 q PCT/US95/07069 5 preferably 135 degrees or more, where the an31e at which the two side edges join the bottom edge plus the angle at which the two side edges join the top edge equals 180 degrees.
In another preferred dl I dl 19el 1~111, as shown in FIG. 1 b, the second half 3 is provided with an adhesive-free, or other fastener-free, surface 15, ~- 10 Surface 15 provides a fingerlift region used to facilitate grasping of the fastening tab second half 3 by the user to remove the fastening tab user's bond region fastening surface 18 from, for example, a release tape attached to the diaper or the diaper dlld-,l 111 n:l ~t surface.
This fingerlift region 15 can be provided by leaving a terminal 15 portion of fastening tab 1 ' without adhesive or other fastening means as shown in Fig. 1 b. Alten IdLi-CIy~ if the fastening surface 18 is a pressure-sensitive adhesive, terminal end portion of the second half could be folded onto fastening surface 18 to provide the fingerlift. In this case preferably the end portion folded onto itself is rectangular (i.e., the side edges join the20 top edge at a 90 degree angle and the side edges in this folded terminal end portion are parallel).
The overall design of the fastening tape tab described in Figs. 1a and 1 b permits easy cutting, e.g., die cutting, of multiple fastening tabs from a stock length 20 of fastening material, as shown in FIG. 2 The 25 structure of the side edge 24 of this stock material would provide the structure of both the top and bottom edges 9 and 14, respectively. The fastening surface 18 is provided by any suitable uu".~,. ILiOndl fastening material as described above. However, if the fastenin3 surface 18 is a pressure-sensitive adhesive, the dLIdl,l 111 len 11 surface on the frontal portion 30 of the diaper is preferably reinforced in some known manner to prevent tearing of the diaper backsheet when the user's bond region is removed from the diaper frontal portion. If the fastening surface 18 is a hook or loop-type material, the dLla(,l 111 len 1I surface on the front of the diaper must W0 96/03954 2 ~ 9 ~ 6 7 ~ r~ u69 5 be formed from a matching hook or loop material. Any matchins hook and/or loop-type material would be suitable. Similarly, with a cohesive sdhesive on the fastening surface 18, the dlld~ llelll surface on the frontal portion of the diaper would have to be provided with a mating cohesive adhesive surface.
Pressure-sensitive or cohesive adhesives can be solvent coated or hot-melt coated onto a backing such as a film, nonwoven web, paper, coated paper or a woven fabric to form the diaper fastening tab user's bond region fastening surface 18. The same, or different, pressure-sensitive adhesives can be used on the manufacturer's bond region fastening surface 17 for pelllldllt:lll dLld~.lllllt:lll to a side edge region of a diaper. Mechanical fastener elements (for the fastening surface 18) can be formed directly on a fastening tab backing or applied as a separate element to the backing by suitable .,u"~. Iliul Idl bonding methods, such as a pressure-sensitive adhesive coating.
The second half 3 has a maximum width y, which is larger than _.
This maximum width y is located between top end 9 and bisecting centerline 10, i.e., in the second half 3.
The maximum width y is preferably located at a distance s of at least 1 .û mm from the top edge 9, most preferably at least 2.0 to 5.0 mm, from top edge 9. The distance s is preferably less than t, where is the distance from maximum width y to the transition line (or area) 6 between fastening surface 18 and fastening surface 17. If the fastening surface is divided into a distal half 4 and a proximal half 5 this It:ld~iUI l:~hi~.! provides a fastening tab users bond region with a maximum peel force at a distal half 4 of the fastening surface 18 creating a more secure bond to the diaper dlla~ 1 IL surface, when compared to a conventional fastening tab with similar surface area. VYith preferred e",bo.li",e"l~, the maximum width y is WO 96/039!i4 ~ 4 ~ 7 q r~
at least 1.2 times _, more preferably 1.5 to 2.0 times_, with y being at least about 1 cm.
Compared to conventional rectangular fastening tab users bond regions of equivalent cross-sectional area, the fastening tab users bond regions of the invention provide improved peel force resistance at the distal half 4 of the fastening tab users bond region. The invention fastening tab also minimizes the potential for inadvertent fastening tab removal or fastening tab pop off. Once the initial peel force maximum is overcome by the parent, the remaining portion of the fastening tab can be opened at forces at, or below, those of a conventional rectangular fastening tab of equivaient users bond region surface area.
The manufacturer's bond region fastening surface 17 minimum width x is at least 5 mm preferably at least 10 mm to prevent twisting of the fastening tab when applied to the diaper. Fastening surface 17 generally is coated with a pressure-sensitive adhesive and the size of surface 17 is d~ ,. " ,i"ed by the shape of fastening tab 1 and the location of sepdl dtil 19 line or area 6 (which generally, ~., ese~ the terminal edge of the diaper to which the fastening surface 17 is attached, however, fastening surface 17 can be a discrete adhesive layer or the like which L~l",i"~ , at line or region 6).
Top edge 9 is generally a flat edge portion with a width less than maximum width y. Further, preferably, the sum of the width of top edge 9 and bottom edge 14 equals the sum of x and y. Top edge 9 generally has a width of at least 5 mm to provide a suitable fingerlift area for a user to grip.
Side edges (7, 7', 8 and 8') have a continuous curved surface providing no sharp corners from the top edge 9 or edge 11 of fingerlift region 15 to the bottom edge 14 or the opposing edge 11'. Preferably, the minimum radius of curvature for this curved surface would be 0.5 mm.
WO96/03954 2 1 9 4~i9 P~ 9 5 However at ed~es 11 and 11' a small corner can be used to provide parallel linear edge portions 19 to facilitate formation of finserlift 15 by turning over of a terminal end portion onto adhesive coated fastening surFace 1 8.
The entire invention fastening tab can be continuously die cut in a 10 repeating pattern from a conventional web or stock roll wlth ess~:"' 'ly no waste product, whlch is advantageous in terms of cost, rnanufacturability (it is difficult to remove small die cut waste pieces cut from a rapidly moving web) and envi,u"",~"~dl concerns.
Claims (10)
1. A diaper fastening tab comprised of a first half and a second half, the second half having a user's bond region formed of a fastening surface, for releasably attaching to a diaper attachment surface, having a maximum width y, the first half having a manufacturer's bond region formed of a second fastening surface, for permanently attaching to a diaper having a minimum width x of at least 5 mm, where y is at least 1.2 times greater than x, the second half having a shape such that, at a transverse line separating the second half from the first half, the second half side edge is an inverted mirror image of the directly adjacent first half side edge.
2. The diaper fastening tab of claim 1 wherein a top edge at the second half has a width less than y and the second half maximum width y is at least 1.0 mm from a top edge at the second half.
3. The diaper fastening tab of claims 1 or 2 wherein the side edges of the fastening tab have side edge portions with no sharp corners from between at least one, or two, terminal fingerlift portions at the top and/or bottom edges, said side edge portions have a minimum radius of curvature of 0.5.
4. The diaper fastening tab of claim 1 wherein the maximum width y is in a distal half of the user's bond region.
5. The diaper fastening tab of claim 3 wherein sum of the width of the bottom edge and the top edge of the fastening tab equal the sum of x plus y.
6. The diaper fastening tab of any of claims 1 to 5 wherein the fastening tab is a mirror image of itself on either side of a bisecting longitudinal center line.
7. The diaper fastening tab of any of claims 1 to 6 wherein the second half user's bond region fastening surface is a pressure-sensitive adhesive surface.
8. The diaper fastening tab of any of claims 1 to 6 wherein the second half user's bond region fastening surface is a mechanical fastener surface.
9. The diaper fastening tab of any of claims 1 to 8 wherein the top edge and the side edges form an angle of at least 135 degrees.
10. The diaper fastening tab of claim 7 wherein the side edges and the top edge form an angle of 90 degrees and a fingerlift portion is formed by folding a rectangular portion of a terminal end of the second half onto the users bond region fastening surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/286,272 US5603708A (en) | 1994-08-05 | 1994-08-05 | Rounded corner fastening tab diaper closure |
| US08/286,272 | 1994-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2194679A1 true CA2194679A1 (en) | 1996-02-15 |
Family
ID=23097843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002194679A Abandoned CA2194679A1 (en) | 1994-08-05 | 1995-06-06 | Rounded corner fastening tab diaper closure |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5603708A (en) |
| EP (1) | EP0773771B1 (en) |
| JP (1) | JP3679119B2 (en) |
| KR (1) | KR100367684B1 (en) |
| CA (1) | CA2194679A1 (en) |
| DE (1) | DE69516694T2 (en) |
| MX (1) | MX9700713A (en) |
| WO (1) | WO1996003954A1 (en) |
Families Citing this family (60)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6030373A (en) * | 1995-04-13 | 2000-02-29 | Kimberly-Clark Worldwide, Inc. | Multi-attachment fastening system |
| SE504649C2 (en) * | 1995-07-07 | 1997-03-24 | Moelnlycke Ab | Method of manufacturing elements for fasteners intended to be attached to lateral portions of an absorbent article and fasteners |
| US6149640A (en) * | 1995-08-14 | 2000-11-21 | The Procter & Gamble Company | Plastic tapes having rounded cross section and methods for making such tapes |
| EP0821926A1 (en) * | 1996-08-03 | 1998-02-04 | The Procter & Gamble Company | Tape tabs for absorbent articles |
| US6410099B1 (en) | 1997-03-05 | 2002-06-25 | 3M Innovative Properties Company | Readily replaceable image graphic web |
| US6044525A (en) * | 1998-12-04 | 2000-04-04 | Velcro Industries B.V. | Fastener straps |
| US6447497B1 (en) | 1999-11-22 | 2002-09-10 | Kimberly-Clark Worldwide, Inc. | Absorbent article with child resistant refastenable seams |
| US8343127B1 (en) | 1999-11-22 | 2013-01-01 | Kimberly-Clark Worldwide, Inc. | Absorbent articles with garment-like refastenable seams |
| US6761711B1 (en) | 1998-12-18 | 2004-07-13 | Kimberly-Clark Worldwide, Inc. | Absorbent articles with refastenable side seams |
| MY130852A (en) * | 1998-12-18 | 2007-07-31 | Kimberly Clark Co | Absorbent articles with shaped fastening component |
| US6645190B1 (en) * | 1999-11-22 | 2003-11-11 | Kimberly-Clark Worldwide, Inc. | Absorbent article with non-irritating refastenable seams |
| US6849067B2 (en) * | 1999-11-22 | 2005-02-01 | Kimberly-Clark Worldwide, Inc. | Absorbent articles with refastenable side seams |
| US6454751B1 (en) | 1999-11-22 | 2002-09-24 | Kimberly-Clark Worldwide, Inc. | Absorbent articles having hinged fasteners |
| US6554816B1 (en) | 1999-11-22 | 2003-04-29 | Kimberly-Clarke Worldwide, Inc. | Absorbent articles with shaped fastening component |
| US6764475B1 (en) | 1998-12-18 | 2004-07-20 | Kimberly-Clark Worldwide, Inc. | Absorbent articles having differential strength refastenable seam |
| USD435103S (en) * | 1999-08-20 | 2000-12-12 | Kimberly-Clark Worldwide, Inc. | Garment fastener for a disposable absorbent article |
| USD428144S (en) * | 1999-08-20 | 2000-07-11 | Mary Anne Bruemmer-Prestley | Garment fastener for a disposable absorbent article |
| USD428143S (en) * | 1999-08-20 | 2000-07-11 | Suzanne Marie Schmoker | Garment fastener for a disposable absorbent article |
| USD428145S (en) * | 1999-08-20 | 2000-07-11 | Mary Anne Bruemmer-Prestley | Garment fastener for a disposable absorbent article |
| USD427677S (en) * | 1999-08-20 | 2000-07-04 | Mary Anne Bruemmer-Prestley | Garment fastener for a disposable absorbent article |
| KR20010056742A (en) * | 1999-12-16 | 2001-07-04 | 성재갑 | Disposable diaper which has round type fasten tape |
| US7416545B1 (en) * | 2000-08-07 | 2008-08-26 | The Procter & Gamble Company | Absorbent article with improved fastening system |
| US6551539B1 (en) | 2000-09-19 | 2003-04-22 | Velcro Industries B.V. | Releasable strap |
| US20020165517A1 (en) * | 2001-03-01 | 2002-11-07 | Kimberly-Clark Worldwide, Inc. | Prefastened diaper/pant for infants with improved fit range |
| US8206366B2 (en) | 2001-03-01 | 2012-06-26 | Kimberly-Clark Worldwide, Inc. | Convertible diaper/pant with ease of application |
| US7473818B2 (en) | 2001-03-01 | 2009-01-06 | Kimberly-Clark Worldwide, Inc. | Product seal of dissimilar materials |
| US7297139B2 (en) * | 2001-07-05 | 2007-11-20 | Kimberly-Clark Worldwide, Inc. | Refastenable absorbent garment |
| US7207979B2 (en) * | 2001-07-05 | 2007-04-24 | Kimberly-Clark Worldwide, Inc. | Refastenable absorbent garment |
| US6622346B2 (en) * | 2001-12-19 | 2003-09-23 | Ykk Corporation Of America | Sheet material including a surface fastener |
| US6838040B2 (en) * | 2001-12-28 | 2005-01-04 | Kimberly-Clark Worldwide, Inc. | Method for weakening a portion of a web |
| US6763554B1 (en) * | 2002-01-22 | 2004-07-20 | Ralph H. Torrey | Self-engaging strap-form tie with special tab |
| US20030168159A1 (en) * | 2002-03-08 | 2003-09-11 | Hans Een | Method for producing blanks for disposable absorbent articles and disposable absorbent articles |
| US20060196597A1 (en) * | 2002-03-08 | 2006-09-07 | Sca Hygiene Products Ab | Method for producing disposable absorbent articles |
| SE0200701D0 (en) * | 2002-03-08 | 2002-03-08 | Sca Hygiene Prod Ab | Method of producing a disposable mortgage |
| US7219403B2 (en) * | 2002-07-23 | 2007-05-22 | The Procter & Gamble Company | Fastening member comprising shaped tab |
| US20040044324A1 (en) * | 2002-09-03 | 2004-03-04 | 3M Innovative Properties Company | Shaped elastic ear |
| US7059505B2 (en) | 2002-12-02 | 2006-06-13 | Kimberly-Clark Worldwide, Inc. | Method and system for breaking a web perforation |
| US20050196583A1 (en) * | 2002-12-03 | 2005-09-08 | Provost George A. | Embossing loop materials |
| US20050196580A1 (en) * | 2002-12-03 | 2005-09-08 | Provost George A. | Loop materials |
| CN100577053C (en) * | 2002-12-03 | 2010-01-06 | 维尔克罗工业公司 | The acupuncture carrier sheet is to form ring |
| US7465366B2 (en) * | 2002-12-03 | 2008-12-16 | Velero Industries B.V. | Needling loops into carrier sheets |
| US7547469B2 (en) | 2002-12-03 | 2009-06-16 | Velcro Industries B.V. | Forming loop materials |
| US20050217092A1 (en) * | 2002-12-03 | 2005-10-06 | Barker James R | Anchoring loops of fibers needled into a carrier sheet |
| US20040186449A1 (en) * | 2003-03-21 | 2004-09-23 | Henri Brisebois | Liquid-absorbing component for an absorbent article |
| US20060058767A1 (en) * | 2004-09-14 | 2006-03-16 | Fen Zhang | Diapers with improved leak prevention |
| US7562426B2 (en) * | 2005-04-08 | 2009-07-21 | Velcro Industries B.V. | Needling loops into carrier sheets |
| US20070178273A1 (en) * | 2006-02-01 | 2007-08-02 | Provost George A | Embossing loop materials |
| EP2387980B2 (en) * | 2006-09-20 | 2019-01-09 | Avery Dennison Corporation | Method of making diaper side panels |
| US20080113152A1 (en) * | 2006-11-14 | 2008-05-15 | Velcro Industries B.V. | Loop Materials |
| WO2008154303A1 (en) * | 2007-06-07 | 2008-12-18 | Velcro Industries B.V. | Needling loops into carrier sheets |
| WO2008154300A1 (en) * | 2007-06-07 | 2008-12-18 | Velcro Industries B.V. | Anchoring loops of fibers needled into a carrier sheet |
| MX2009006522A (en) * | 2008-06-17 | 2010-02-22 | Arquest Inc | Hybrid stretch ear and absorbent article including the same. |
| US8123733B2 (en) | 2009-01-29 | 2012-02-28 | First Quality Baby Products, Llc | Absorbent article with intermittent side seams |
| US8523836B2 (en) | 2010-10-22 | 2013-09-03 | Kimberly-Clark Worldwide, Inc. | Disposable absorbent article with finger tab |
| US8545474B2 (en) | 2010-10-22 | 2013-10-01 | Kimberly-Clark Worldwide, Inc. | Disposable absorbent article with finger tab without compromising stretch |
| EP2747594B1 (en) | 2011-08-25 | 2015-08-26 | Velcro Industries B.V. | Loop-engageable fasteners and related systems and methods |
| EP2747726B1 (en) | 2011-08-25 | 2015-10-28 | Velcro Industries B.V. | Hook-engageable loop fasteners and related systems and methods |
| JP5838906B2 (en) * | 2012-05-09 | 2016-01-06 | 王子ホールディングス株式会社 | Tape type disposable diaper |
| BR112016021539B1 (en) | 2014-03-28 | 2022-01-04 | Kimberly-Clark Worldwide, Inc. | MANUFACTURING METHOD OF AN ABSORBENT ARTICLE WITH A WASTE REDUCED FIXING SYSTEM |
| KR101966248B1 (en) * | 2016-08-31 | 2019-04-05 | 유니 참 코포레이션 | Absorber and method of manufacturing absorbent article |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3848594A (en) * | 1973-06-27 | 1974-11-19 | Procter & Gamble | Tape fastening system for disposable diaper |
| US3926190A (en) * | 1974-11-20 | 1975-12-16 | Johnson & Johnson | Disposable diaper with twist tab fastener |
| PT84104B (en) * | 1986-01-21 | 1989-02-28 | Procter & Gamble | DISPOSABLE DIAPER |
| EP0292970A1 (en) * | 1987-05-26 | 1988-11-30 | Uni-Charm Corporation | Fastening tape for disposable absorbent article |
| FR2624353B1 (en) * | 1987-12-09 | 1990-05-18 | Celatose Sa | PANTIES |
| US4923456A (en) * | 1987-12-31 | 1990-05-08 | Kimberly-Clark Corporation | Adjustable combination fastener for a disposable diaper |
| SE463088B (en) * | 1988-12-30 | 1990-10-08 | Moelnlycke Ab | PROCEDURES FOR MANUFACTURE OF TAPE STRAPS |
| US5312387A (en) * | 1993-02-11 | 1994-05-17 | Minnesota Mining And Manufacturing Company | Rounded corner fastening tab diaper closure |
-
1994
- 1994-08-05 US US08/286,272 patent/US5603708A/en not_active Expired - Fee Related
-
1995
- 1995-06-06 EP EP95921601A patent/EP0773771B1/en not_active Expired - Lifetime
- 1995-06-06 CA CA002194679A patent/CA2194679A1/en not_active Abandoned
- 1995-06-06 WO PCT/US1995/007069 patent/WO1996003954A1/en active IP Right Grant
- 1995-06-06 DE DE69516694T patent/DE69516694T2/en not_active Expired - Fee Related
- 1995-06-06 JP JP50647496A patent/JP3679119B2/en not_active Expired - Fee Related
- 1995-06-06 MX MX9700713A patent/MX9700713A/en not_active IP Right Cessation
- 1995-06-06 KR KR1019970700736A patent/KR100367684B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10503945A (en) | 1998-04-14 |
| KR970704406A (en) | 1997-09-06 |
| KR100367684B1 (en) | 2003-03-04 |
| MX9700713A (en) | 1997-05-31 |
| EP0773771B1 (en) | 2000-05-03 |
| WO1996003954A1 (en) | 1996-02-15 |
| EP0773771A1 (en) | 1997-05-21 |
| US5603708A (en) | 1997-02-18 |
| JP3679119B2 (en) | 2005-08-03 |
| DE69516694D1 (en) | 2000-06-08 |
| DE69516694T2 (en) | 2001-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |