CA1190702A - Disposable diaper - Google Patents
Disposable diaperInfo
- Publication number
- CA1190702A CA1190702A CA000414193A CA414193A CA1190702A CA 1190702 A CA1190702 A CA 1190702A CA 000414193 A CA000414193 A CA 000414193A CA 414193 A CA414193 A CA 414193A CA 1190702 A CA1190702 A CA 1190702A
- Authority
- CA
- Canada
- Prior art keywords
- upper layer
- absorbent pad
- backing sheet
- sheet
- base layer
- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49019—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being placed longitudinally, transversely or diagonally over the article
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
ABSTRACT OF THE DISCLOSURE
A disposable diaper having an absorbent pad between a top sheet and a backing sheet. The absorbent pad includes a base layer and an upper layer along only the opposite sides thereof to provide both a fluid trap and additional fluid absorbing material for the diaper which may be of rectangular or hour-glass configuration.
A disposable diaper having an absorbent pad between a top sheet and a backing sheet. The absorbent pad includes a base layer and an upper layer along only the opposite sides thereof to provide both a fluid trap and additional fluid absorbing material for the diaper which may be of rectangular or hour-glass configuration.
Description
~ 7~ 2301-1179 BACKGROUND OF T~IE INVENTION
FIELD OF TilE INVENTION
This invention relates to disposable diapers of either rect~mgular or hour-glass configuration, and more particularly to a disposable diaper having effective fluid entrapment.
DESCRIPTION OF T~IE PRIOR ART
In the past diapers have been provided with fluid traps usually formed of a waterproof material such as an imperforate sheet of polyethylene or the like.
One form of fluid trap is formed from material of a fluid impervi-ous backing sheet which ex*ends over the top sheet. This sometimes becomes disadvantageous because the backing sheet material may cause discomfort or chafing of an infant.
Another fluid barrier is formed hy utilizing strips of waterproof material forming a binder for the diaper, but this is an expensive and diffi-cult diaper to manufacture and the waterproof material again is less comfort-able than the usual top sheet material.
It is to be noted that the use of additional waterproof material in-creases rigidity of the diaper thus making the proper fit thereof more diffi-cult if not unlikely while in no way adding to the absorptive capacity ofthe diaper.
U.S. No. 315,3~5 I.R. 523F æ
SU~ RY OF THE INVEN~ION
The present invention overcomes the difficulties of the prior art by providing a Eluid barrier that has the further advantage oE additional absorptive capacity. The disposable diaper according to the invention has a ~acking sheet, an absorbent pad on said backing sheet and a top sheet overlying said a~sorbent pad and secured to said backing sheet along the peripheral edges thereof, said absorbent pad including side edge portions and a central portion there~etween, said absorbent pad including a base layer having no folds and of an absorbent material, and a separate upper layer of absorbent material ex~ending along only said side edge portions of said base layer and not overlying said central portion, said upper layer being disposed directly on and along the entire side edges of said base layer with nothing between said upper layer and said base layer and between said ~acking sheet and said top sheet, said upper layer forming fluid traps, said absorbent pad being o~ an hour-glass confi~uration defining a crotch area and opposed pairs of outwardly extending ears, said upper layer having edge portions conforming to said hour-glass con-figuration extending along the crotch area and extending over said ears.
DRAWINGS
Fig. 1 is a plan view of a contoured diaper in accor-dance with the concepts of the present invention;
Fig. 2 is a sectional view taken along the plane of line 2-2 in Fig~ l;
Fig. 3 is a plan view of a rectangular diaper according to the present invention;
Fig, 4 is a sectional view taken along the plane of line 4-4 in Fig. 3; and, Fig, 5 is a schematic view showing an embodiment of forming the two layer absorbent pad according to the invent ion .
-3a-D~TAILED DESCRIPTION OF T~IE INVENIION
With continuing reference to the accompanying drawing, wherein like reference numerals designate similar parts throughout the various views~
reference numeral lO generally designates a contoured diaper illustrated in Figs. l and 2 in accordance with the concepts of the present invention.
The diaper 10 includes a backing sheet 12, an absorbent pad 14 and a top sheet 16.
The backing sheet 12 is formed of any suitable wat0rproof material such as from an imperforate sheet of polyathylene or the like.
The top sheet 16 is ormed preferably from a non-chafing comfort inducing material such as from a non-woven sheet of polyethylene or polypro-pylene fibers.
The absorbent pad 14 is formed from any suitable absorbent mate-rial such as the wood-fluff commonly used in the art. ~onventional absorbent pads of wood fluff are die cut to shape and sandwiched between top sheet and backing sheet.
According to the invention the absor~ent pad 14 is provided with a base layer 18 and a two part upper layer 20 disposed along the opposite sides 22, 24 of the pad 14. The pad 14 is die cut in an hour-glass configura-tion forming a crotch area 26 and opposed pairs of ears 28 at the four corners of the diaper. The upper layer 20 extends over the ears 28. Alter-natively, it is within the concept of this invention to provide the upper layer in only the crotch area of the diaper. As shown in Fig. 5, the pad 114 may be provided with die cuts 116~ 118 therein which extend inwardly and convergingly. The flap 120 thus formed is folded inwardly to form the upper layer.
Elastic members in the form of elasticized strips 40 are bonded to the backing sheet 12, if desired, and the top sheet is heat sealed or adhe-sively bondad to the backing sheet along their peripheral edges. The upper layer 20, 120 form fluid barriers while also increasing the absorptive cap-abilities of the diaper and during use may be compressed to increase the bar-rier effect.
As can be seenJ the upper layer 20 may form an ex*ension of the base layer 18 by folding. Alternatively, the upper layer rnay be made in a separate piece. Ilowever, the foldhlg over of the upper layer 20 seems to add at that point increased barrier effect.
Referring now to Figs. 3 and 4~ herein is shown an embodiment lO
of the invention for use in a rectangular diaper. The absorbent pad 214 of preferably wood fluff is sandwiched between the backing sheet 212 of prefer-ably sheet polyethylene and the top sheet 216 of preferably non-woven fibers of polyethylene or polypropylene. The ends 219 of the backing sheet 212 are folded over the top sheet 216.
l`he absorbent pad 214 includes a base layer 218 and an upper layer 220 along the opposite side edges 222 and 224 of the absorbent pad 214. The upper layer 220 may be preferably folded from the base layer 218 or can be positioned on the base layer 218 from separate pieces.
The various ernbodiments of the diaper can be positioned on an infant through use of conventional self-stick adhesive tabs.
FIELD OF TilE INVENTION
This invention relates to disposable diapers of either rect~mgular or hour-glass configuration, and more particularly to a disposable diaper having effective fluid entrapment.
DESCRIPTION OF T~IE PRIOR ART
In the past diapers have been provided with fluid traps usually formed of a waterproof material such as an imperforate sheet of polyethylene or the like.
One form of fluid trap is formed from material of a fluid impervi-ous backing sheet which ex*ends over the top sheet. This sometimes becomes disadvantageous because the backing sheet material may cause discomfort or chafing of an infant.
Another fluid barrier is formed hy utilizing strips of waterproof material forming a binder for the diaper, but this is an expensive and diffi-cult diaper to manufacture and the waterproof material again is less comfort-able than the usual top sheet material.
It is to be noted that the use of additional waterproof material in-creases rigidity of the diaper thus making the proper fit thereof more diffi-cult if not unlikely while in no way adding to the absorptive capacity ofthe diaper.
U.S. No. 315,3~5 I.R. 523F æ
SU~ RY OF THE INVEN~ION
The present invention overcomes the difficulties of the prior art by providing a Eluid barrier that has the further advantage oE additional absorptive capacity. The disposable diaper according to the invention has a ~acking sheet, an absorbent pad on said backing sheet and a top sheet overlying said a~sorbent pad and secured to said backing sheet along the peripheral edges thereof, said absorbent pad including side edge portions and a central portion there~etween, said absorbent pad including a base layer having no folds and of an absorbent material, and a separate upper layer of absorbent material ex~ending along only said side edge portions of said base layer and not overlying said central portion, said upper layer being disposed directly on and along the entire side edges of said base layer with nothing between said upper layer and said base layer and between said ~acking sheet and said top sheet, said upper layer forming fluid traps, said absorbent pad being o~ an hour-glass confi~uration defining a crotch area and opposed pairs of outwardly extending ears, said upper layer having edge portions conforming to said hour-glass con-figuration extending along the crotch area and extending over said ears.
DRAWINGS
Fig. 1 is a plan view of a contoured diaper in accor-dance with the concepts of the present invention;
Fig. 2 is a sectional view taken along the plane of line 2-2 in Fig~ l;
Fig. 3 is a plan view of a rectangular diaper according to the present invention;
Fig, 4 is a sectional view taken along the plane of line 4-4 in Fig. 3; and, Fig, 5 is a schematic view showing an embodiment of forming the two layer absorbent pad according to the invent ion .
-3a-D~TAILED DESCRIPTION OF T~IE INVENIION
With continuing reference to the accompanying drawing, wherein like reference numerals designate similar parts throughout the various views~
reference numeral lO generally designates a contoured diaper illustrated in Figs. l and 2 in accordance with the concepts of the present invention.
The diaper 10 includes a backing sheet 12, an absorbent pad 14 and a top sheet 16.
The backing sheet 12 is formed of any suitable wat0rproof material such as from an imperforate sheet of polyathylene or the like.
The top sheet 16 is ormed preferably from a non-chafing comfort inducing material such as from a non-woven sheet of polyethylene or polypro-pylene fibers.
The absorbent pad 14 is formed from any suitable absorbent mate-rial such as the wood-fluff commonly used in the art. ~onventional absorbent pads of wood fluff are die cut to shape and sandwiched between top sheet and backing sheet.
According to the invention the absor~ent pad 14 is provided with a base layer 18 and a two part upper layer 20 disposed along the opposite sides 22, 24 of the pad 14. The pad 14 is die cut in an hour-glass configura-tion forming a crotch area 26 and opposed pairs of ears 28 at the four corners of the diaper. The upper layer 20 extends over the ears 28. Alter-natively, it is within the concept of this invention to provide the upper layer in only the crotch area of the diaper. As shown in Fig. 5, the pad 114 may be provided with die cuts 116~ 118 therein which extend inwardly and convergingly. The flap 120 thus formed is folded inwardly to form the upper layer.
Elastic members in the form of elasticized strips 40 are bonded to the backing sheet 12, if desired, and the top sheet is heat sealed or adhe-sively bondad to the backing sheet along their peripheral edges. The upper layer 20, 120 form fluid barriers while also increasing the absorptive cap-abilities of the diaper and during use may be compressed to increase the bar-rier effect.
As can be seenJ the upper layer 20 may form an ex*ension of the base layer 18 by folding. Alternatively, the upper layer rnay be made in a separate piece. Ilowever, the foldhlg over of the upper layer 20 seems to add at that point increased barrier effect.
Referring now to Figs. 3 and 4~ herein is shown an embodiment lO
of the invention for use in a rectangular diaper. The absorbent pad 214 of preferably wood fluff is sandwiched between the backing sheet 212 of prefer-ably sheet polyethylene and the top sheet 216 of preferably non-woven fibers of polyethylene or polypropylene. The ends 219 of the backing sheet 212 are folded over the top sheet 216.
l`he absorbent pad 214 includes a base layer 218 and an upper layer 220 along the opposite side edges 222 and 224 of the absorbent pad 214. The upper layer 220 may be preferably folded from the base layer 218 or can be positioned on the base layer 218 from separate pieces.
The various ernbodiments of the diaper can be positioned on an infant through use of conventional self-stick adhesive tabs.
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A disposable diaper comprising a backing sheet, an absorbent pad on said backing sheet and a top sheet overlying said absorbent pad and secured to said backing sheet along the peripheral edges thereof, said absorbent pad including side edge portions and a central portion therebetween, said absorbent pad including a base layer having no folds and of an absorbent material, and a separate upper layer of absorbent material extending along only said side edge portions of said base layer and not overlying said central portion, said upper layer being disposed directly on and along the entire side edges of said base layer with nothing between said upper layer and said base layer and between said backing sheet and said top sheet, said upper layer forming fluid traps, said absorbent pad being of an hour-glass configuration defining a crotch area and opposed pairs of outwardly extending ears, said upper layer having edge portions conforming to said hour-glass configuration extending along the crotch area and extending over said ears.
2. A disposable diaper according to claim 1, wherein said peripheral edges of said top sheet and said backing sheet are bonded to each other outwardly of said upper layer, there being no folds in said top sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31538581A | 1981-10-27 | 1981-10-27 | |
| US315,385 | 1981-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1190702A true CA1190702A (en) | 1985-07-23 |
Family
ID=23224161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000414193A Expired CA1190702A (en) | 1981-10-27 | 1982-10-26 | Disposable diaper |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5887304A (en) |
| AU (1) | AU560834B2 (en) |
| BE (1) | BE894809A (en) |
| BR (1) | BR8206227A (en) |
| CA (1) | CA1190702A (en) |
| CH (1) | CH657758A5 (en) |
| DE (1) | DE3238449A1 (en) |
| DK (1) | DK475382A (en) |
| ES (1) | ES268155U (en) |
| FR (1) | FR2515007B1 (en) |
| GB (1) | GB2108371B (en) |
| GR (1) | GR77689B (en) |
| IE (1) | IE53563B1 (en) |
| IT (1) | IT1148436B (en) |
| NL (1) | NL8204155A (en) |
| NZ (1) | NZ202258A (en) |
| PT (1) | PT75737B (en) |
| ZA (1) | ZA827608B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306331A (en) * | 1995-10-26 | 1997-05-07 | Breger Gibson Ltd | Absorbent batt for use in sanitary items |
| US5843063A (en) | 1996-11-22 | 1998-12-01 | Kimberly-Clark Worldwide, Inc. | Multifunctional absorbent material and products made therefrom |
| US6152904A (en) | 1996-11-22 | 2000-11-28 | Kimberly-Clark Worldwide, Inc. | Absorbent articles with controllable fill patterns |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4922227A (en) * | 1972-04-24 | 1974-02-27 | ||
| US3865111A (en) * | 1973-04-09 | 1975-02-11 | Domtar Ltd | Easily disposable diaper with sealing bead |
| US3920017A (en) * | 1974-09-27 | 1975-11-18 | Colgate Palmolive Co | Crotch-shaped diaper and method |
| FR2462112A1 (en) * | 1979-07-25 | 1981-02-13 | Etu Tech Realisa Applique Cent | Baby's disposable napkin - has turned-down portions to offer double thickness at crutch |
-
1982
- 1982-10-16 DE DE19823238449 patent/DE3238449A1/en not_active Withdrawn
- 1982-10-18 ZA ZA827608A patent/ZA827608B/en unknown
- 1982-10-21 NZ NZ202258A patent/NZ202258A/en unknown
- 1982-10-22 CH CH6177/82A patent/CH657758A5/en not_active IP Right Cessation
- 1982-10-25 GR GR69624A patent/GR77689B/el unknown
- 1982-10-26 IT IT49364/82A patent/IT1148436B/en active
- 1982-10-26 IE IE2566/82A patent/IE53563B1/en unknown
- 1982-10-26 ES ES1982268155U patent/ES268155U/en active Pending
- 1982-10-26 PT PT75737A patent/PT75737B/en unknown
- 1982-10-26 CA CA000414193A patent/CA1190702A/en not_active Expired
- 1982-10-26 FR FR8217911A patent/FR2515007B1/en not_active Expired
- 1982-10-26 AU AU89780/82A patent/AU560834B2/en not_active Ceased
- 1982-10-26 BE BE0/209331A patent/BE894809A/en not_active IP Right Cessation
- 1982-10-26 GB GB08230603A patent/GB2108371B/en not_active Expired
- 1982-10-26 BR BR8206227A patent/BR8206227A/en unknown
- 1982-10-27 NL NL8204155A patent/NL8204155A/en not_active Application Discontinuation
- 1982-10-27 JP JP57188883A patent/JPS5887304A/en active Granted
- 1982-10-27 DK DK475382A patent/DK475382A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BE894809A (en) | 1983-04-26 |
| JPH0316139B2 (en) | 1991-03-04 |
| AU560834B2 (en) | 1987-04-16 |
| DK475382A (en) | 1983-04-28 |
| CH657758A5 (en) | 1986-09-30 |
| GB2108371B (en) | 1985-10-23 |
| FR2515007B1 (en) | 1988-10-28 |
| PT75737B (en) | 1984-12-03 |
| BR8206227A (en) | 1983-09-20 |
| AU8978082A (en) | 1983-05-05 |
| GR77689B (en) | 1984-09-25 |
| IE822566L (en) | 1983-04-27 |
| FR2515007A1 (en) | 1983-04-29 |
| GB2108371A (en) | 1983-05-18 |
| NZ202258A (en) | 1984-10-19 |
| IT1148436B (en) | 1986-12-03 |
| PT75737A (en) | 1982-11-01 |
| IT8249364A0 (en) | 1982-10-26 |
| ES268155U (en) | 1983-05-01 |
| IE53563B1 (en) | 1988-12-07 |
| ZA827608B (en) | 1984-06-27 |
| DE3238449A1 (en) | 1983-05-19 |
| JPS5887304A (en) | 1983-05-25 |
| NL8204155A (en) | 1983-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |