CA1289298C - Conformable diaper using elastic means - Google Patents
Conformable diaper using elastic meansInfo
- Publication number
- CA1289298C CA1289298C CA000524976A CA524976A CA1289298C CA 1289298 C CA1289298 C CA 1289298C CA 000524976 A CA000524976 A CA 000524976A CA 524976 A CA524976 A CA 524976A CA 1289298 C CA1289298 C CA 1289298C
- Authority
- CA
- Canada
- Prior art keywords
- diaper
- product
- side margins
- elastic means
- transversely extending
- 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 - Lifetime
Links
Abstract
ABSTRACT
The present invention refers to elastic means for appliance in absorbent products such as disposable diapers having an impermeable backing sheet (2), a liquid permeable covering (3) and an absorbent pad.
Such means comprise elastic means (5) placed transver-sally to the product in the crotch region, which, in combination with shrinkable means (4) placed in the thighs region, longitudinally to the product, cause the product to take an anatomical configuration, with no need for making cuts or grooves in the product panel which is essentially rectangular.
The present invention refers to elastic means for appliance in absorbent products such as disposable diapers having an impermeable backing sheet (2), a liquid permeable covering (3) and an absorbent pad.
Such means comprise elastic means (5) placed transver-sally to the product in the crotch region, which, in combination with shrinkable means (4) placed in the thighs region, longitudinally to the product, cause the product to take an anatomical configuration, with no need for making cuts or grooves in the product panel which is essentially rectangular.
Description
9'~98 CONFORMABLE DIAPER USING ELASTIC MEANS
The present invention refers to elastic means and, more precisely, to an elastic means used in absor-bent products such as diapers and the like, provided in the crotch region and around the thighs region of the user.
Elastic systems for absorbent products have been used with the objective of sealing and improving the anatomical form achieved by cutting said product 10 in the crotch region so as to substantially reduce this area.
Several improvements have been introduced in attempt to solve existing prior art problems, however the inefficiency in closure and absorption as well as 15 the discomfort provided by products with cuts in the crotch region still remain unsolved.
One of the objectives of the present invention for solving prior art problems is the arrangement, in a substantially rectangular-shaped diaper, of a heat-20 shrinkable material on the sides, in combination witha provision of transversal elastic bands fixed to the plastic backing sheet in the crotch region in order to provide an adequate anatomical configuration appro-priate to the user's body.
1~
~28~ 9~3 Such objective is obtained in the present invention by providing elastic means in the absorbent product which is cut in an absolutely rectangular configura~ion in the region correspondent to the zone which will adhere to the user's thighs, parallel to the length of the rectangle which constitutes said absorbent pxoduct.
According to the above object, from a bxoad aspect, the present invention provides a disposable diaper comprising a substantially rectangular liquid-impermeable backing sheet, a substantially rectangular liquid-permeable facing sheet and a substantially xectangular absorbent pad secured between the facing sheet and the backing sheet. The diaper has a crotch xegion and a paix of generally parallel side margins. The diaper fuxther has a longitudinally extending elastic element secured at each of its side margins. At least one transversely extending elastic element is secuxed in the crotch region thereof. The transversely extending elastic element is centxally located so that its ends do not reach the side margins of the diaper.
The present invention will be hereinafter described, based on the attached dxawings in which:
~ - Fig. l is a rear perspective view of a ,~
diaper showing said means of the present invention.
- Fig. 2 is a sectional view along line A-A of Fig. l.
The configuration of the absoxbent product l, that is, the diaper, is substantially rectangular without any cut or groove.
In order to obtain an anatomical configuration, adequate to the outline of the ; 35 user's thighs, a heat shrinkable material 4 having elastomeric characteristics is longitudinally , ,, '~ ~ :. , .,.~ .
: : .
" -1~39?~98 - 2a -applied in the sides of the product, between the impermeable facing sheet 2 and the liquid-permeable covering 3.
The heat shrinkable material 4 comprises an S ethylene vinyl acetate polymer or copolymer film, being also obtainable from plastic mixtures such as polyethylene or polypropylene with elastomeric materials or thermoplastic rubbers.
This film when suitably strained, will have its molecules oriented along a dete~mined direction, , ~
" , `~:
:
: :
.
:~ :B::
:: -, ~ . .
~289Z98 longitudinally or transversally, according to its application.
When heat is applied to the film, the film will shrink, tending to return to a stable position.
Then some wrinkles will appear on the sides of the diaper because said film is tightly fixed to said covering 3 and said sheet 2. Such wrinkle will beof an anatomical configuration, providing better comfort and sealing.
In the crotch region, transversally to the absorbent product, elastic members 5 are fixed to the impermeable sheet 2. Such elastic memebers 5 are monofilaments coated with a hot-melt adhesive.
When applied, said monofilaments are strained and receive an adhesive which will fix said monofila-ments to the sheet 2.
~; In order to return to its stable position, said monofilaments will shrink causing a corrugation in the crotch region, thus increasing the absorption capacity of the product by concentrating said absor-bent material in said region. The monofilaments may, of course, be applied by other means such as sewing, etc...
An anatomical configuration that provides a ~ 25 better adaptation to the user's body and, consequently, d~ a better absorption and sealing, is obtained by combining said shrinkable material 4 with said elastic members 5, eliminating the need for usual cuts and grooves.
, ~ :
. ~ .
..:
' ~9~9~
A monofilament 6 is also provided in said impermeable sheet 2 in the waist region, in order to provide better adjustment of said absorbent product to the user, thus avoiding bagginess due to excess of material.
Having thus described the present invention, it must be understood that few changes may be made and should not go beyond the basic concept of the invention which will be limited by the following claims.
J-12.107 MLM/men .
.
The present invention refers to elastic means and, more precisely, to an elastic means used in absor-bent products such as diapers and the like, provided in the crotch region and around the thighs region of the user.
Elastic systems for absorbent products have been used with the objective of sealing and improving the anatomical form achieved by cutting said product 10 in the crotch region so as to substantially reduce this area.
Several improvements have been introduced in attempt to solve existing prior art problems, however the inefficiency in closure and absorption as well as 15 the discomfort provided by products with cuts in the crotch region still remain unsolved.
One of the objectives of the present invention for solving prior art problems is the arrangement, in a substantially rectangular-shaped diaper, of a heat-20 shrinkable material on the sides, in combination witha provision of transversal elastic bands fixed to the plastic backing sheet in the crotch region in order to provide an adequate anatomical configuration appro-priate to the user's body.
1~
~28~ 9~3 Such objective is obtained in the present invention by providing elastic means in the absorbent product which is cut in an absolutely rectangular configura~ion in the region correspondent to the zone which will adhere to the user's thighs, parallel to the length of the rectangle which constitutes said absorbent pxoduct.
According to the above object, from a bxoad aspect, the present invention provides a disposable diaper comprising a substantially rectangular liquid-impermeable backing sheet, a substantially rectangular liquid-permeable facing sheet and a substantially xectangular absorbent pad secured between the facing sheet and the backing sheet. The diaper has a crotch xegion and a paix of generally parallel side margins. The diaper fuxther has a longitudinally extending elastic element secured at each of its side margins. At least one transversely extending elastic element is secuxed in the crotch region thereof. The transversely extending elastic element is centxally located so that its ends do not reach the side margins of the diaper.
The present invention will be hereinafter described, based on the attached dxawings in which:
~ - Fig. l is a rear perspective view of a ,~
diaper showing said means of the present invention.
- Fig. 2 is a sectional view along line A-A of Fig. l.
The configuration of the absoxbent product l, that is, the diaper, is substantially rectangular without any cut or groove.
In order to obtain an anatomical configuration, adequate to the outline of the ; 35 user's thighs, a heat shrinkable material 4 having elastomeric characteristics is longitudinally , ,, '~ ~ :. , .,.~ .
: : .
" -1~39?~98 - 2a -applied in the sides of the product, between the impermeable facing sheet 2 and the liquid-permeable covering 3.
The heat shrinkable material 4 comprises an S ethylene vinyl acetate polymer or copolymer film, being also obtainable from plastic mixtures such as polyethylene or polypropylene with elastomeric materials or thermoplastic rubbers.
This film when suitably strained, will have its molecules oriented along a dete~mined direction, , ~
" , `~:
:
: :
.
:~ :B::
:: -, ~ . .
~289Z98 longitudinally or transversally, according to its application.
When heat is applied to the film, the film will shrink, tending to return to a stable position.
Then some wrinkles will appear on the sides of the diaper because said film is tightly fixed to said covering 3 and said sheet 2. Such wrinkle will beof an anatomical configuration, providing better comfort and sealing.
In the crotch region, transversally to the absorbent product, elastic members 5 are fixed to the impermeable sheet 2. Such elastic memebers 5 are monofilaments coated with a hot-melt adhesive.
When applied, said monofilaments are strained and receive an adhesive which will fix said monofila-ments to the sheet 2.
~; In order to return to its stable position, said monofilaments will shrink causing a corrugation in the crotch region, thus increasing the absorption capacity of the product by concentrating said absor-bent material in said region. The monofilaments may, of course, be applied by other means such as sewing, etc...
An anatomical configuration that provides a ~ 25 better adaptation to the user's body and, consequently, d~ a better absorption and sealing, is obtained by combining said shrinkable material 4 with said elastic members 5, eliminating the need for usual cuts and grooves.
, ~ :
. ~ .
..:
' ~9~9~
A monofilament 6 is also provided in said impermeable sheet 2 in the waist region, in order to provide better adjustment of said absorbent product to the user, thus avoiding bagginess due to excess of material.
Having thus described the present invention, it must be understood that few changes may be made and should not go beyond the basic concept of the invention which will be limited by the following claims.
J-12.107 MLM/men .
.
Claims (3)
1. A disposable diaper comprising a substantially rectangular liquid-impermeable backing sheet, a substantially rectangular liquid-permeable facing sheet and a substantially rectangular absorbent pad secured between said facing sheet and said backing sheet, said diaper having a crotch region and a pair of generally parallel side margins, said diaper having a longitudinally extending elastic element secured at each of its side margins, and at least one transversely extending elastic element secured in the crotch region thereof, said transversely extending elastic element being centrally located so that its ends do not reach the side margins of the diaper.
2. A disposable diaper according to claim 1, characterized in that the elastic elements in the side margins of the diaper comprise a film of thermo-shrinkable material to which heat has been applied and the transversely extending elastic element comprises an elastic monofilament.
3. A diaper according to claim 1 or 2 wherein there are a plurality of said transversely extending elastic monofilaments.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI8506246 | 1985-12-12 | ||
| BR8506246A BR8506246A (en) | 1985-12-12 | 1985-12-12 | ELASTIC DEVICES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1289298C true CA1289298C (en) | 1991-09-24 |
Family
ID=4039175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000524976A Expired - Lifetime CA1289298C (en) | 1985-12-12 | 1986-12-10 | Conformable diaper using elastic means |
Country Status (4)
| Country | Link |
|---|---|
| BR (1) | BR8506246A (en) |
| CA (1) | CA1289298C (en) |
| GT (1) | GT198700055A (en) |
| PT (1) | PT83907B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509915A (en) | 1991-09-11 | 1996-04-23 | Kimberly-Clark Corporation | Thin absorbent article having rapid uptake of liquid |
-
1985
- 1985-12-12 BR BR8506246A patent/BR8506246A/en unknown
-
1986
- 1986-12-10 CA CA000524976A patent/CA1289298C/en not_active Expired - Lifetime
- 1986-12-11 PT PT8390786A patent/PT83907B/en not_active IP Right Cessation
-
1987
- 1987-09-04 GT GT198700055A patent/GT198700055A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509915A (en) | 1991-09-11 | 1996-04-23 | Kimberly-Clark Corporation | Thin absorbent article having rapid uptake of liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| BR8506246A (en) | 1987-06-30 |
| PT83907B (en) | 1993-08-31 |
| PT83907A (en) | 1987-08-19 |
| GT198700055A (en) | 1989-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |