CA1109205A - Disposable diaper with improved tape fastener - Google Patents
Disposable diaper with improved tape fastenerInfo
- Publication number
- CA1109205A CA1109205A CA289,520A CA289520A CA1109205A CA 1109205 A CA1109205 A CA 1109205A CA 289520 A CA289520 A CA 289520A CA 1109205 A CA1109205 A CA 1109205A
- Authority
- CA
- Canada
- Prior art keywords
- pad assembly
- diaper
- pad
- side margin
- adhesive
- 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.)
- Expired
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
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
DISPOSABLE DIAPER WITH IMPROVED TAPE FASTENER
ABSTRACT OF THE DISCLOSURE
A disposable diaper comprising, an absorbent pad assembly having an absorbent pad, and a sheet covering a surface of the pad. The sheet has a slit defining a strip connected to the remaining portion of the sheet. The diaper has a pressure-sensitive tape strip secured to the pad assembly and extending across an opening defined by the slit, with the tape strip hav-ing adhesive facing toward the sheet strip. The sheet strip is releasably attached to the adhesive and is peeled from the tape strip in order to expose the adhesive through the opening for use in securing the diaper about an infant.
ABSTRACT OF THE DISCLOSURE
A disposable diaper comprising, an absorbent pad assembly having an absorbent pad, and a sheet covering a surface of the pad. The sheet has a slit defining a strip connected to the remaining portion of the sheet. The diaper has a pressure-sensitive tape strip secured to the pad assembly and extending across an opening defined by the slit, with the tape strip hav-ing adhesive facing toward the sheet strip. The sheet strip is releasably attached to the adhesive and is peeled from the tape strip in order to expose the adhesive through the opening for use in securing the diaper about an infant.
Description
BACKGROUND OF THE INVENTION
The present inYen~ion relates to absorbent articles~ and more particularly to disposable diapers.
A various assortment of disposable diapers have been proposed ~or use on infants, and have become increasingly popular since they may be dis-posed after a single use and need not be l~undered. The diapeTs aTe normally constructed from a fluid impervious backing sheet, a top OT coveT sheet, and an absorbent pad located inteTmediate the backing and coveT sheets. Tape fasteners have also been proposed for the diapers, and aTe utilized to secure the diaper about an infant du~ing placement. Such tape fasteners noTmally comprise a pressure-sensitive adhesive tape, and a release sheet covering ad-hesive on the tape stTip. The release shee~ is removed duTing placement of the diaper, in order to expose adhesive on the tape stTip for attaching the diaper about the infant. The prio~ tape fasteneTs have required a separate release sheet in orde~ to cover the adhesive, which adds to the expense of manufacture and the ultimate cost to the consumer. Additionally, it is de-sirable to eliminate the inconvenience of discarding separate release sheets during placement of the diaper.
S~MARY OF THE INVENTION
Aocording to one aspect of the present invention there is provided a disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a paiT of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch po~tion theTebetween, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of thermoplastic ma~erial coveTing a back surface of said pad and having a doubled side margin extending past the side edge of said pad, said side margin compTising first and second facing sections of the backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being fused together in one waistline region adjacent one of the pad assembly end edges, the o~her side margin being allochirally related to said side margin, said side margins in the one waistline Tegion having a .~ ~
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first elongated slit means geneTally aligned with and spaced inuardly from the fold line of said side margin, and a second slit means extending from the first slit means to the fold line of thc side margin, with said first and second slit means defining hinged flaps adjacent the side edges of the pad assembly said flaps each having a ~elease surface formed by the first and second fused sections; and a pressure-sensitiYe tape strip secured to a sur-face of said side margin and covering said flap, said tape strip having ad-hesive facing toward the flap, with said flap being releasably attached to said adhesive and being peelable from ~he tape strip to expose the adhesive for use in securing the diaper about an infant.
According to another aspect o~ the present invention there is pro-vided a disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch portion there-between, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of theTmoplastic mateTial cover-ing a back surface of said pad and having a doubled side n~argin extending past the side edge of said pad, said side nargin comprising first and second facing sections of ~he backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being ~used together in one waistline region adjacent one of the pad assembly end edges, the other side margin allochirally related to said side margin, said side margins in the one waistline region having first and second spaced slit means extending inwardly from the old line of said side margin, with said first and second slit means defining hinged flaps ad-jacent the side edges of the pad assembly, said flaps having a release sur-face formed by the first and second fused sections and hinged along a line connecting the medial ends of said first and second slit means; and a pressure-sensitive tape strip secured to a surface of said side margin and covering said flap, said tape strip having adhesive facin~ tol~ard the flap, with said flap being releasably attached to said adhesive and being peelable from the tape strip to expose the adhesive for use in securing the diaper
The present inYen~ion relates to absorbent articles~ and more particularly to disposable diapers.
A various assortment of disposable diapers have been proposed ~or use on infants, and have become increasingly popular since they may be dis-posed after a single use and need not be l~undered. The diapeTs aTe normally constructed from a fluid impervious backing sheet, a top OT coveT sheet, and an absorbent pad located inteTmediate the backing and coveT sheets. Tape fasteners have also been proposed for the diapers, and aTe utilized to secure the diaper about an infant du~ing placement. Such tape fasteners noTmally comprise a pressure-sensitive adhesive tape, and a release sheet covering ad-hesive on the tape stTip. The release shee~ is removed duTing placement of the diaper, in order to expose adhesive on the tape stTip for attaching the diaper about the infant. The prio~ tape fasteneTs have required a separate release sheet in orde~ to cover the adhesive, which adds to the expense of manufacture and the ultimate cost to the consumer. Additionally, it is de-sirable to eliminate the inconvenience of discarding separate release sheets during placement of the diaper.
S~MARY OF THE INVENTION
Aocording to one aspect of the present invention there is provided a disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a paiT of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch po~tion theTebetween, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of thermoplastic ma~erial coveTing a back surface of said pad and having a doubled side margin extending past the side edge of said pad, said side margin compTising first and second facing sections of the backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being fused together in one waistline region adjacent one of the pad assembly end edges, the o~her side margin being allochirally related to said side margin, said side margins in the one waistline Tegion having a .~ ~
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first elongated slit means geneTally aligned with and spaced inuardly from the fold line of said side margin, and a second slit means extending from the first slit means to the fold line of thc side margin, with said first and second slit means defining hinged flaps adjacent the side edges of the pad assembly said flaps each having a ~elease surface formed by the first and second fused sections; and a pressure-sensitiYe tape strip secured to a sur-face of said side margin and covering said flap, said tape strip having ad-hesive facing toward the flap, with said flap being releasably attached to said adhesive and being peelable from ~he tape strip to expose the adhesive for use in securing the diaper about an infant.
According to another aspect o~ the present invention there is pro-vided a disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch portion there-between, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of theTmoplastic mateTial cover-ing a back surface of said pad and having a doubled side n~argin extending past the side edge of said pad, said side nargin comprising first and second facing sections of ~he backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being ~used together in one waistline region adjacent one of the pad assembly end edges, the other side margin allochirally related to said side margin, said side margins in the one waistline region having first and second spaced slit means extending inwardly from the old line of said side margin, with said first and second slit means defining hinged flaps ad-jacent the side edges of the pad assembly, said flaps having a release sur-face formed by the first and second fused sections and hinged along a line connecting the medial ends of said first and second slit means; and a pressure-sensitive tape strip secured to a surface of said side margin and covering said flap, said tape strip having adhesive facin~ tol~ard the flap, with said flap being releasably attached to said adhesive and being peelable from the tape strip to expose the adhesive for use in securing the diaper
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about an infant.
Diapers in accoTdance uith the present invention may be constructed at a reduced cost for the consumer.
Additionally, the tape fastener eliminates the necessity for dis-carding separate release sheets during placement of the diaper.
The tape fastener may also be prepared for use in securing the diaper about an infant in a simplified manner.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings which illustrate exemplary embodiments of the present inven~lon:
Figure 1 is a fragmentary front plan YieW o a disposable diaper haYing a tape fastener of the present invention;
2a , , --.
s Fig. 2 is a fragmentary back plan view of the diaper ~f Fig. l;
Fig. 3 is a fragmentary sectional view taken sub~tanti-ally as indicated along the line 3-3 of Fi~
Fig. 4 is a fragmentary sectional view taken substan-tially a~ indicated along the line 4-4 of Fig. l;
Fig. 5 is a fragmentary front plan view of another embodimen~ of the diaper of the present invention;
Fi~7 6 is a fxagmentaxy ~ront plan view of another embodiment of a disposable diaper of the present invention;
Fig. 7 is a fra~mentary back plan view of another embodiment of a dispo~a~le diaper of the present invention; and .. Fig. 8 is a fragmentary ~ectional view of another embsdiment of a disposable diaper of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to Figs. 1~4, there is shot~n a disposable diaper generally designated 20 having an absorbent pad assembly 22. The pad assembly 22 has a fl~id impervious thermoplastic backing sheet 24, such as polyethylene, defining a back surface 26 of the pad assembly, a fluid pervious cover or top sheet 28 defin-... .
,ng a substantial part of a front surface 30 of the pad assembly 22, and an absorbent pad 32 located hetween the backing sheet 24 and top sheet 28. The pad 32 may have a front wadding sheet 34, a back wadding sheet 36, and a pad portion 38, such as comminuted wood pulp termed in the art as fluff, located betwaen the front and back wadding sheet~ 34 and 36 which serve to increase the structural inteqrity of the pad portion 38. The absorbent pad 32 ~_. .. ... . _ ., _ __ s has a pair of side edges 40~ and a pair sf end ed~es 42 connect-ing the side edges 40. The backing sheet 24 has a pair of first side sections 44 extending past the opposed side edges 40 of the pad 32, a pair of fold lines 46 defining opposed side edges 48 of the pad assembly 22, and a pair of second side sections 50 extending in~ardly from the respective fold lines 46. Thus, the doubled portion of the first and second side sections 44 and 50 define opposed side ~argins 52 of the pad assembly 22, and the first and second sections 44 and 50 of the side margins 52 may be fused together longitudinally along the pad assembly 22. The pad assembly 22 has a p~ir of end edges 54 connecting the side edges 48, and may have a plurality of }ongitudinally extending fold lines defining a box-pleat configuration of the pad assembly.
The diaper 20 has a pair of tape fasteners generally designated 60 adjacent opposed side edges 48 of the pad assembly and adjacent an end edge 54 of the pad assembly. As shown, each of the side margins 52 o the backing sheet 24 has a first slit 62 extending from the respective side edge 4~ of the pad assembly - 22 inwardly toward a lateral central portion of the diaper, and a second slit 64 extending from an inner portion of the first slit 62 in a direction awav ~rom t~e adjacen~ end edge 54 of the pad ~ ... . . . ........................................... .
assembly 22~ Thus, the first and second slits 62 and 64, with a psrtion of fold line 46, define a covering strip 66 of the doubled portion of the backing æheet 24 in each side margin 52. The cover-ing strips 66 are connected at one end 68 to the remaining portiono~ the backing sheet 24, and their free ends 70 define respective openings 72 in the diaper side margins 52.
The diaper 20 also has a pair of pressure-sensitive r ~
... .
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tape strips 74 secured to the back surface 26 of the pad assembly 22 at a location with the tape strips 74 extending across the respective openings 72 defined by the slits in the pad assembly side margins 52. As shown, the tape strips 74 have adhesive 76 S on a surface facing toward the sheet covering strips 66. In the packaged configuration of a diaper, the covering strips 66 are releasably attached to the adhesive 76 on the tape strips 74, as shown in the left-hand portion o Fig. 1, with the heat-treated surface of the covering strips 66 serving as a release surface 77 to facilitate removal of the covering strips 66 from the adhesiYe 76. During placement of the diaper, the free ends 70 of the covering strips 66 may be peeled from the adhesive 76 on the tape strips 74 in order to expose the adhesive 76 through ~he openings 72 in the diaper side margins 52, as illustrated in the riyht-hand portion of Fig. l, and ~he exposed adhesive 76 may be uti-lized to secure the diaper abou~ the infant.
In this manner, the covering strips 66 may be readily removed from the tape strips 74 in order to expose adhe~ive for placement of the diaper about an infant. At the same time, the covering strips 66 are an integral portion of the diaper 20 it-self, and remain attached to the dia~er after removal from the ... . . .
tape strip adhe~ive 76 in order to eliminate the necessity for discarding separate release sheets during placement of the diaper.
In fact, the diaper of the pres~nt invention eliminates separate release sheets altogether, thus reducing the expense of diaper materials and the cost to the consumer.
Another embodiment of the present invention is illus-trated in Fig. 5, in which like reference numerals designate like ~ ,, . . _._ parts, In this embodiment, the covering s~rip 66 is defined by a pair of spaced slits 78a and 78b which extend inwardly from the side edge 48 of the pad assembly 22 toward a lateral central por-tion of the diaper. Thus, the covering strips 66 of the pad assembly side margins 52 are defined by the .~old line 46 and the - slits 78a and b, with the covering strips Ç6 being connected at inne,r ends 68 to the remaining portion of the backing sheet 24 in the side maxgins 52~ The tape s~rips 74 are secured to the back sur~ace of the pad assembly across the openings 72 in the diaper side margins 5~, and tha connected covering strips 66 are peeled from the adhesive 76 of the tape strips 74 inwardly in order to exp.ose the adhesi~e for securing the diaper about an infant.
Another embodiment of the present invention is illus-trated in Fig~ 6, in which like reference numerals designate likeparts. In this embodiment, the tape fastener 60 is similar to the fastener des~ribed in connection with Figs. 1-4, with the exception that the second slit 64 extends fxom an inner portion of the first slit 62 in a direction toward the adjacent endiedge 54 of the pad assemblyO The covering strips 66.are peeled from th.e adheslve. 76 of the tape strips 74 in a direction toward the adjacent end edge 54 of the pad assembly. In this manner, the adhesive 76 is exposed for securing th diaper about an infant while the coverin~ strips 66 of the backing sheet 24 remain con-nected to the diaper.
Another embodiment of the present invention is illus-trated in Fig. 7, in which like reference n~merals designate like parts. In this embodiment, the tape fastener 60 is similar to r ~L~3~
the fastener described in connection with Figs. 1-4, excep~ that the tape strips 74 are secured to the front surface of the di~per side margins 52. Thus, the covering strips 66 of the pad assem-bly side margins 52 are.peeled from the adhesive 76 on the tape 5 strips 74, such that the adhesive 76 faces through the openings 72 toward the ba~k surface 26 of the pad assembly 22 for use in securing the diaper about the infant. As ~efore, the covering strips 66 are an integral part of the.diaper, and remain connected to the diaper after placement.about the infant~
Another embodiment of the diaper of the present-inven-tion is illustrated in Fig~ 8, in which like reference numerals desi~nate like parts. In this.embodiment, the tape stxip 74 is located intermediate the first an~ second side sections 44 and 50) respectively, of the diaper side margin ~2, and may comprise a double-~ced tape strip..having adhesive 80 on one surface fix-edly attached to an inner surface of the first side margin sec-tion 44, and adhesive 82 on an opposed .~urface ~f the tape strip 74 releasably attached to an inner release surface 77 of the cov-ering strip 66 which in this embodiment comprises a single ply of the second side section S0 defined by the first and second slits and a slit 84 extending along the diaper side ed~e 48 in the region of the covering strip 66. In use, the cov ring strip.66 is peeled from the adhesive 82 on the tape-strip 74, and the adhesive 82 facing through the opening 72 of the side margin 52 may be utilized to secure khe diaper about the infan' while the - adhesive 80 retains the tape strip 74 on the first side section 44 of the backing sheet 24.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be under~tood there~rom, as modification~ will be obvious to those skilled in the art.
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~L~,'d~ S
about an infant.
Diapers in accoTdance uith the present invention may be constructed at a reduced cost for the consumer.
Additionally, the tape fastener eliminates the necessity for dis-carding separate release sheets during placement of the diaper.
The tape fastener may also be prepared for use in securing the diaper about an infant in a simplified manner.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings which illustrate exemplary embodiments of the present inven~lon:
Figure 1 is a fragmentary front plan YieW o a disposable diaper haYing a tape fastener of the present invention;
2a , , --.
s Fig. 2 is a fragmentary back plan view of the diaper ~f Fig. l;
Fig. 3 is a fragmentary sectional view taken sub~tanti-ally as indicated along the line 3-3 of Fi~
Fig. 4 is a fragmentary sectional view taken substan-tially a~ indicated along the line 4-4 of Fig. l;
Fig. 5 is a fragmentary front plan view of another embodimen~ of the diaper of the present invention;
Fi~7 6 is a fxagmentaxy ~ront plan view of another embodiment of a disposable diaper of the present invention;
Fig. 7 is a fra~mentary back plan view of another embodiment of a dispo~a~le diaper of the present invention; and .. Fig. 8 is a fragmentary ~ectional view of another embsdiment of a disposable diaper of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to Figs. 1~4, there is shot~n a disposable diaper generally designated 20 having an absorbent pad assembly 22. The pad assembly 22 has a fl~id impervious thermoplastic backing sheet 24, such as polyethylene, defining a back surface 26 of the pad assembly, a fluid pervious cover or top sheet 28 defin-... .
,ng a substantial part of a front surface 30 of the pad assembly 22, and an absorbent pad 32 located hetween the backing sheet 24 and top sheet 28. The pad 32 may have a front wadding sheet 34, a back wadding sheet 36, and a pad portion 38, such as comminuted wood pulp termed in the art as fluff, located betwaen the front and back wadding sheet~ 34 and 36 which serve to increase the structural inteqrity of the pad portion 38. The absorbent pad 32 ~_. .. ... . _ ., _ __ s has a pair of side edges 40~ and a pair sf end ed~es 42 connect-ing the side edges 40. The backing sheet 24 has a pair of first side sections 44 extending past the opposed side edges 40 of the pad 32, a pair of fold lines 46 defining opposed side edges 48 of the pad assembly 22, and a pair of second side sections 50 extending in~ardly from the respective fold lines 46. Thus, the doubled portion of the first and second side sections 44 and 50 define opposed side ~argins 52 of the pad assembly 22, and the first and second sections 44 and 50 of the side margins 52 may be fused together longitudinally along the pad assembly 22. The pad assembly 22 has a p~ir of end edges 54 connecting the side edges 48, and may have a plurality of }ongitudinally extending fold lines defining a box-pleat configuration of the pad assembly.
The diaper 20 has a pair of tape fasteners generally designated 60 adjacent opposed side edges 48 of the pad assembly and adjacent an end edge 54 of the pad assembly. As shown, each of the side margins 52 o the backing sheet 24 has a first slit 62 extending from the respective side edge 4~ of the pad assembly - 22 inwardly toward a lateral central portion of the diaper, and a second slit 64 extending from an inner portion of the first slit 62 in a direction awav ~rom t~e adjacen~ end edge 54 of the pad ~ ... . . . ........................................... .
assembly 22~ Thus, the first and second slits 62 and 64, with a psrtion of fold line 46, define a covering strip 66 of the doubled portion of the backing æheet 24 in each side margin 52. The cover-ing strips 66 are connected at one end 68 to the remaining portiono~ the backing sheet 24, and their free ends 70 define respective openings 72 in the diaper side margins 52.
The diaper 20 also has a pair of pressure-sensitive r ~
... .
~.~.Q~
tape strips 74 secured to the back surface 26 of the pad assembly 22 at a location with the tape strips 74 extending across the respective openings 72 defined by the slits in the pad assembly side margins 52. As shown, the tape strips 74 have adhesive 76 S on a surface facing toward the sheet covering strips 66. In the packaged configuration of a diaper, the covering strips 66 are releasably attached to the adhesive 76 on the tape strips 74, as shown in the left-hand portion o Fig. 1, with the heat-treated surface of the covering strips 66 serving as a release surface 77 to facilitate removal of the covering strips 66 from the adhesiYe 76. During placement of the diaper, the free ends 70 of the covering strips 66 may be peeled from the adhesive 76 on the tape strips 74 in order to expose the adhesive 76 through ~he openings 72 in the diaper side margins 52, as illustrated in the riyht-hand portion of Fig. l, and ~he exposed adhesive 76 may be uti-lized to secure the diaper abou~ the infant.
In this manner, the covering strips 66 may be readily removed from the tape strips 74 in order to expose adhe~ive for placement of the diaper about an infant. At the same time, the covering strips 66 are an integral portion of the diaper 20 it-self, and remain attached to the dia~er after removal from the ... . . .
tape strip adhe~ive 76 in order to eliminate the necessity for discarding separate release sheets during placement of the diaper.
In fact, the diaper of the pres~nt invention eliminates separate release sheets altogether, thus reducing the expense of diaper materials and the cost to the consumer.
Another embodiment of the present invention is illus-trated in Fig. 5, in which like reference numerals designate like ~ ,, . . _._ parts, In this embodiment, the covering s~rip 66 is defined by a pair of spaced slits 78a and 78b which extend inwardly from the side edge 48 of the pad assembly 22 toward a lateral central por-tion of the diaper. Thus, the covering strips 66 of the pad assembly side margins 52 are defined by the .~old line 46 and the - slits 78a and b, with the covering strips Ç6 being connected at inne,r ends 68 to the remaining portion of the backing sheet 24 in the side maxgins 52~ The tape s~rips 74 are secured to the back sur~ace of the pad assembly across the openings 72 in the diaper side margins 5~, and tha connected covering strips 66 are peeled from the adhesive 76 of the tape strips 74 inwardly in order to exp.ose the adhesi~e for securing the diaper about an infant.
Another embodiment of the present invention is illus-trated in Fig~ 6, in which like reference numerals designate likeparts. In this embodiment, the tape fastener 60 is similar to the fastener des~ribed in connection with Figs. 1-4, with the exception that the second slit 64 extends fxom an inner portion of the first slit 62 in a direction toward the adjacent endiedge 54 of the pad assemblyO The covering strips 66.are peeled from th.e adheslve. 76 of the tape strips 74 in a direction toward the adjacent end edge 54 of the pad assembly. In this manner, the adhesive 76 is exposed for securing th diaper about an infant while the coverin~ strips 66 of the backing sheet 24 remain con-nected to the diaper.
Another embodiment of the present invention is illus-trated in Fig. 7, in which like reference n~merals designate like parts. In this embodiment, the tape fastener 60 is similar to r ~L~3~
the fastener described in connection with Figs. 1-4, excep~ that the tape strips 74 are secured to the front surface of the di~per side margins 52. Thus, the covering strips 66 of the pad assem-bly side margins 52 are.peeled from the adhesive 76 on the tape 5 strips 74, such that the adhesive 76 faces through the openings 72 toward the ba~k surface 26 of the pad assembly 22 for use in securing the diaper about the infant. As ~efore, the covering strips 66 are an integral part of the.diaper, and remain connected to the diaper after placement.about the infant~
Another embodiment of the diaper of the present-inven-tion is illustrated in Fig~ 8, in which like reference numerals desi~nate like parts. In this.embodiment, the tape stxip 74 is located intermediate the first an~ second side sections 44 and 50) respectively, of the diaper side margin ~2, and may comprise a double-~ced tape strip..having adhesive 80 on one surface fix-edly attached to an inner surface of the first side margin sec-tion 44, and adhesive 82 on an opposed .~urface ~f the tape strip 74 releasably attached to an inner release surface 77 of the cov-ering strip 66 which in this embodiment comprises a single ply of the second side section S0 defined by the first and second slits and a slit 84 extending along the diaper side ed~e 48 in the region of the covering strip 66. In use, the cov ring strip.66 is peeled from the adhesive 82 on the tape-strip 74, and the adhesive 82 facing through the opening 72 of the side margin 52 may be utilized to secure khe diaper about the infan' while the - adhesive 80 retains the tape strip 74 on the first side section 44 of the backing sheet 24.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be under~tood there~rom, as modification~ will be obvious to those skilled in the art.
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Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch portion therebetween, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of thermoplastic material covering a back surface of said pad and having a doubled side margin extending past the side edge of said pad, said side margin comprising first and second facing sections of the backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being fused together in one waistline region adjacent one of the pad assembly end edges, the other side margin being allochirally related to said side margin, said side margins in the one waistline region having a first elongated slit means generally aligned with and spaced inwardly from the fold line of said side margin, and a second slit means extending from the first slit means to the fold line of the side margin, with said first and second slit means defining hinged flaps adjacent the side edges of the pad assembly said flaps each having a release surface formed by the first and second fused sections, and a pressure-sensitive tape strip secured to a sur-face of said side margin and covering said flap, said tape strip having ad-hesive facing toward the flap, with said flap being releasably attached to said adhesive and being peelable from the tape strip to expose the adhesive for use in securing the diaper about an infant.
2. The diaper of claim 1 wherein the flaps are hinged toward the one end edge of the pad assembly.
3. The diaper of claim 1 wherein the flaps are hinged away from the one end edge of the pad assembly.
4, A disposable diaper, comprising: an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a pair of opposed waistline portions adjacent said end edges and a crotch portion therebetween, an absorbent pad having a side edge spaced inwardly from one of the pad assembly side edges, and a backing sheet of thermoplastic material covering a back surface of said pad and having a doubled side margin ex-tending past the side edge of said pad, said side margin comprising first and second facing sections of the backing sheet extending inwardly from a fold line of the side margin defining the one side edge of the pad assembly, with the first and second sections being fused together in one waistline region ad-jacent one of the pad assembly end edges, the other side margin allochirally related to said side margin, said side margins in the one waistline region having first and second spaced slit means extending inwardly from the fold line of said side margin, with said first and second slit means defining hinged flaps adjacent the side edges of the pad assembly, said flaps having a release surface formed by the first and second fused sections and hinged along a line connecting the medial ends of said first and second slit means, and a pressure-sensitive tape strip secured to a surface of said side margin and covering said flap, said tape strip having adhesive facing toward the flap, with said flap being releasably attached to said adhesive and being peelable from the tape strip to expose the adhesive for use in securing the diaper about an infant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74527376A | 1976-11-26 | 1976-11-26 | |
| US745,273 | 1976-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1109205A true CA1109205A (en) | 1981-09-22 |
Family
ID=24995996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA289,520A Expired CA1109205A (en) | 1976-11-26 | 1977-10-26 | Disposable diaper with improved tape fastener |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5369749A (en) |
| AT (1) | AT363425B (en) |
| AU (1) | AU518592B2 (en) |
| BE (1) | BE861045A (en) |
| BR (1) | BR7707263A (en) |
| CA (1) | CA1109205A (en) |
| CH (1) | CH622173A5 (en) |
| DE (1) | DE2751961A1 (en) |
| DK (1) | DK154322B (en) |
| ES (1) | ES239606Y (en) |
| FR (1) | FR2371893A1 (en) |
| GB (1) | GB1564241A (en) |
| GR (1) | GR72108B (en) |
| IE (1) | IE46173B1 (en) |
| IT (1) | IT1090242B (en) |
| MX (1) | MX149184A (en) |
| MY (1) | MY8300126A (en) |
| NL (1) | NL7711583A (en) |
| PH (1) | PH18193A (en) |
| PT (1) | PT67228B (en) |
| ZA (1) | ZA776049B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148095A (en) * | 1983-10-19 | 1985-05-30 | Procter & Gamble | A waste-containment garment having integrally protected adhesive fasteners |
| FR2572626B1 (en) * | 1984-11-06 | 1988-12-09 | Beghin Say Sa | SINGLE USE CHANGE |
| US4576600A (en) * | 1985-03-18 | 1986-03-18 | Curt G. Joa, Inc. | Fasteners for diapers |
| JPH03503017A (en) * | 1989-01-05 | 1991-07-11 | ワールドワイド・ベビイ・ベイシック・インフアントウエアー・リミテッド | Diapers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901237A (en) * | 1974-07-31 | 1975-08-26 | Johnson & Johnson | Fastening means for a disposable diaper |
| US3926191A (en) * | 1974-11-20 | 1975-12-16 | Johnson & Johnson | Disposable diaper having adhesive tabs and release strips therefor permanently attached at marginal edges of diaper |
| US3948258A (en) * | 1975-02-24 | 1976-04-06 | Colgate-Palmolive Company | Diaper tape fastener |
| US3971380A (en) * | 1975-05-19 | 1976-07-27 | Johnson & Johnson | Disposable diaper having an adhesive closure system and method of construction therefor |
-
1977
- 1977-10-11 ZA ZA00776049A patent/ZA776049B/en unknown
- 1977-10-14 MX MX170960A patent/MX149184A/en unknown
- 1977-10-17 GR GR54588A patent/GR72108B/el unknown
- 1977-10-21 NL NL7711583A patent/NL7711583A/en not_active Application Discontinuation
- 1977-10-24 AU AU29961/77A patent/AU518592B2/en not_active Expired
- 1977-10-26 CA CA289,520A patent/CA1109205A/en not_active Expired
- 1977-10-31 BR BR7707263A patent/BR7707263A/en unknown
- 1977-11-02 PT PT67228A patent/PT67228B/en unknown
- 1977-11-03 IT IT7751677A patent/IT1090242B/en active
- 1977-11-08 DK DK496177AA patent/DK154322B/en not_active Application Discontinuation
- 1977-11-09 PH PH20415A patent/PH18193A/en unknown
- 1977-11-16 FR FR7734407A patent/FR2371893A1/en active Granted
- 1977-11-17 JP JP13840377A patent/JPS5369749A/en active Granted
- 1977-11-17 GB GB47918/77A patent/GB1564241A/en not_active Expired
- 1977-11-19 ES ES1977239606U patent/ES239606Y/en not_active Expired
- 1977-11-21 DE DE19772751961 patent/DE2751961A1/en active Granted
- 1977-11-21 AT AT0829777A patent/AT363425B/en not_active IP Right Cessation
- 1977-11-22 BE BE182803A patent/BE861045A/en not_active IP Right Cessation
- 1977-11-24 CH CH1443377A patent/CH622173A5/en not_active IP Right Cessation
- 1977-11-25 IE IE2398/77A patent/IE46173B1/en unknown
-
1983
- 1983-12-30 MY MY126/83A patent/MY8300126A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE861045A (en) | 1978-03-16 |
| BR7707263A (en) | 1978-08-15 |
| DK154322B (en) | 1988-11-07 |
| DE2751961C2 (en) | 1987-03-19 |
| MY8300126A (en) | 1983-12-31 |
| DE2751961A1 (en) | 1978-06-01 |
| IT1090242B (en) | 1985-06-26 |
| JPS6111321B2 (en) | 1986-04-02 |
| IE46173L (en) | 1978-05-26 |
| GR72108B (en) | 1983-09-14 |
| JPS5369749A (en) | 1978-06-21 |
| PT67228A (en) | 1977-12-01 |
| AU2996177A (en) | 1979-05-03 |
| ATA829777A (en) | 1981-01-15 |
| PH18193A (en) | 1985-04-23 |
| AU518592B2 (en) | 1981-10-08 |
| ES239606Y (en) | 1979-12-16 |
| FR2371893A1 (en) | 1978-06-23 |
| CH622173A5 (en) | 1981-03-31 |
| MX149184A (en) | 1983-09-20 |
| AT363425B (en) | 1981-08-10 |
| PT67228B (en) | 1979-04-13 |
| IE46173B1 (en) | 1983-03-23 |
| ES239606U (en) | 1979-07-16 |
| FR2371893B1 (en) | 1982-07-09 |
| DK496177A (en) | 1978-05-27 |
| ZA776049B (en) | 1979-05-30 |
| GB1564241A (en) | 1980-04-02 |
| NL7711583A (en) | 1978-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |