WO2007059933A2 - Anatomically shaped, highly elastic elements for baby diapers and incontinence products - Google Patents

Anatomically shaped, highly elastic elements for baby diapers and incontinence products Download PDF

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Publication number
WO2007059933A2
WO2007059933A2 PCT/EP2006/011184 EP2006011184W WO2007059933A2 WO 2007059933 A2 WO2007059933 A2 WO 2007059933A2 EP 2006011184 W EP2006011184 W EP 2006011184W WO 2007059933 A2 WO2007059933 A2 WO 2007059933A2
Authority
WO
WIPO (PCT)
Prior art keywords
a1
elastic
characterized
diaper
thread
Prior art date
Application number
PCT/EP2006/011184
Other languages
German (de)
French (fr)
Other versions
WO2007059933A3 (en
Inventor
Wilfried Fenske
Original Assignee
Wilfried Fenske
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CH01869/05 priority Critical
Priority to CH18692005 priority
Application filed by Wilfried Fenske filed Critical Wilfried Fenske
Publication of WO2007059933A2 publication Critical patent/WO2007059933A2/en
Publication of WO2007059933A3 publication Critical patent/WO2007059933A3/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007Form-fitting, self-adjusting disposable diapers
    • A61F13/49009Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007Form-fitting, self-adjusting disposable diapers
    • A61F13/49009Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels

Abstract

The invention relates to anatomically shaped, highly elastic elements for baby diapers and incontinence products. The aim of the invention is to improve the stretchability and fit of baby diapers and incontinence products. For this purpose, highly elastic and ergonomically shaped side panels are produced from groups of elastic threads or tapes, applied in an anatomically suitable manner, from a skin-friendly, flexible laminate. Optimum fit is achieved by adaptation of the position, shape, prestress and strength of the elastic threads. The exclusive use of conventional mass-produced articles for all components of the laminate contributes to substantial savings in material costs of the side panels so produced.

Description

Contoured, highly elastic elements for baby diapers and incontinence products

PRIOR ART

Absorbent baby diapers and incontinence products are since the 70s in different versions on the European and the global market place and thus the prior art. Basically, these products consist of a central segment consisting primarily of a suction element of pulp and super-sorbers (101), a back sheet as a moisture barrier (102) and a skin side, partly air, partly moisture-open one- or multi-part layer for entry of urine oa in the absorbent core (103). Furthermore, this segment is reinforced in its longitudinal direction by one or more pre-tensioned elastic threads or elements (104), and optionally in addition in the cross direction by elastic elements (105,106) in the later hip direction of the diaper in order to secure a good body contact. Moreover, once on the back of the diaper or multi-part adhesive tape attached / Velcro systems (107,108), the attached upon application of the diaper in one on the front "landing zone" (109) are brought into engagement.

In the following term "diaper" used for all absorbent products from the Babyhgiene, incontinence products, medical devices and feminine hygiene, the basic structure satisfies this description and their function is the absorption of body fluids. Variations on this theme, such as in the type of embodiment of the closure system or the arrangement of the elastic members which are obvious to the skilled person, or in similar form are on the market, are prior art.

Various methods are known in the art and established in order by attaching elastic side members (so-called side panel) of the diaper has a stretchability in the circumferential direction (also called transverse direction) to give the intended both to improve the accessibility and comfort, as well as the seat and fit. Thus, so-called widespread. "Elastic tapes" can be found in different versions, which have an elastic zone (206) (typically film or laminate-based) in the fastening strip (207) between the mounting surface of the diaper chassis and the Velcro. More comfortable are fully elastic side panel in which a far greater surface for a high-querdehnbares film-nonwoven laminate (306) said closure system (308.309) an increased variability placement is made possible when docking. A further variant is shown in Figure 4: Here, the extensible zone is formed by elastic threads or tapes that form an extensible in the transverse direction of the diaper laminate.

Products of this type are offered by diaper manufacturers such as Kimberly-Clarke, Procter & Gamble, AHP, Hartmann, and many others for a long time in the trade.

A new development is shown in Figure 5: Here, the extensible zone is formed of a laminate of one or more substrates with segment-wise applied thremoplastischen elastomers that can be made extensible by a suitable cross-activation process in the transverse direction (WO 2005/096855 A1). Description of the Invention

This results in completely new ways very inexpensive Side Panels with optimal adaptation to produce the respective body contour (Figure 6a), when the elastic zone may be formed of a laminate of one or more substrates, in which the tensioned, substantially in the direction of the anatomically / are welded embedded desired force curve oriented strands or tapes and bonded.

The elastic element may consist of commercially available elastomers which can be processed under a pre-strain of 50-450% in the cured state in thread-like or strip-like form, such as Lycra, Dorlastan, elastane, Spandex (all names are resp. RTM), synthetic, or natural rubber, or the like, all referred to as elastic threads. The substrates may be made of non-woven / nonwoven, film / foil, paper / pulp, laminates, oa and combinations thereof. The connection of the components can be done by gluing, welding or mechanical connection. For utility in the diaper manufacturing is crucial that the so created endless substrate is substantially elastically relaxing the stretched elastic threads transversely to its pre-production direction. This process, including the type of positioning of the prestressed elastic members is described in PCT application Sandra Fenske PCT / EP 2005/005527.

These so-formed laminates are extremely flexible, entirely air permeable and thus skin-friendly compared to the prior art, can be interpreted on the respective requirements and contouring of the body surface and are therefore to manufacture very inexpensive, since they use the commercially available materials. Furthermore, it should be noted that matches this so prepared laminate in its production longitudinal direction with the subsequent processing in the diaper manufacturing process so simple, known deposition processes ( "cut & space") for all described in the following embodiments can be used.

In Figure 6a, the simplest form of this embodiment is shown. The elastic side panel consists of two groups of 50-450% pre-stretched elastic threads, each 2-40 individual filaments to 100-5000dTex which are arranged in parallel and equidistantly within the respective group, in essence, the two groups to each other but in their respective main directions at an angle of 3-45grd (in stretched state) are POSITION yOUR that of the hook and loop fastener (608) emanating, in use, forces are introduced into the widely diversified connecting surface (601) of the diaper. The connection between hook and loop tape and the laminate can by a "finger lift tab" (609) can be improved, thereby lifting also the user-friendliness when closing or opening the shutter from film, nonwoven fabric or paper, which is mounted on or between the substrates. At least one of the backbone of the side panels forming substrates extending over the entire surface of the side panels including anchoring zone (601) and finger-lift tab (609). The anchorage (601) by bonding or welding can be performed either on the outside of the diaper or between the back sheet and cover fleece, said anchoring zone is located at a distance of 0-75mm to the respectively nearest outer edge of the diaper.

Variations on these embodiments will become such that - the filaments are arranged within each group at different distances from thread to adjacent yarn of 1-25mm,

- the fibers are arranged within each group are not parallel, but at an angle to each other from thread to adjacent yarn of -7grd to 7grd,

- the yarns are not straight in itself, but having a radius of curvature of 10mm- 100m in every point, or one or more abrupt changes in direction ( "kinks", s image 6c.) Which, as well as obvious combinations of these three modifications with one another.

Technically very significant is the embodiment in Figure 6b: Here (= belt) is one of the groups (606a) is substantially in the diaper periphery direction thereof, while a second group (606b) searches for the frictional connection with the Upon rubber bands to the fit around the legs to improve. With this arrangement, a diaper receives the elastic properties of a bikini bottom.

Image 6c shows another variation which is for larger diapers (and in the incontinence area) important: By "bending" of the individual threads in the central area of ​​the side panels a geometry is generated when each about a longitudinal half of the groups in the diaper periphery direction (= belt) that is other aligned in the direction of the rear and front leg elastics, whereby the above-mentioned "bikini" effect further enhanced, and the required especially in the incontinence area fit is improved in a wide range of body types.

It is obvious that by using a plurality of groups (2-6 per side panel), the properties of the solutions of images 6a-c can be synergistically combined.

If both mirror image side panels of a diaper having one or more substrate layers together, there is a constellation 6d, in which the side panel pairs over virtually extend their anchoring surface, the entire back side of the diaper and thus contribute to the structural relief of the diaper and associated material savings.

The outer contour of the side panel, ie the contour section through those regions which are formed only by the substrates and not by the elastic threads, is mainly an aesthetic nature, as for the fit and elasticity of minor importance and, in contrast to the contour film-based side panel also freely aesthetic considerations are executed.

All such materials may configured processing ( "cut & space", or the like) applied to the diaper and bonded thereto, welded or otherwise connected in the unstressed state by known techniques of the diaper. drawings

Figure 1: Schematic representation of a modern, part-elastic diaper

101 suction pads

102 Rϋckenfolie

103 Deck fleece

104 leg elastics

105 Rear resilient girdle

106 front elastic girdle

107 fixing tape (opt. Carrier tape)

Velcro 108

109 "Landing Zone" ( "Frontal Tape")

Figure 2: Elastic Tape

206 Elastic zone

207 fixing tape (opt. Carrier tape)

208 Velcro

Figure 3: Elastic film-Side Panel

306 Elastic zone (film or laminate)

307 fixing tape (opt. Carrier tape)

308 Velcro

Figure 4: Elastic bands-Side Panel

406 Elastic zone (laminate having elastic bands)

407 fixing tape (opt. Carrier tape)

408 Velcro

Figure 5: Elastic molding / printing Side panel

506 Elastic zone (laminate with applied Gußelasten)

507 fixing tape (opt. Carrier tape)

508 Velcro

Figure 6 a: Elastic Side panel with pretensioned elastic threads, symmetrically

Figure 6 b: Elastic Side panel with pretensioned elastic threads, high fit

Figure 6 c: Elastic Side panel with pretensioned elastic threads, high-cut leg

601 bonded face to back film / non-woven of the diaper cover 606a, b

Groups of prestressed elastic threads

608 Velcro

609 "Finger-Lift" band

Picture 6d: Part Elastic belt 101 suction pads

102 back film

103 covering nonwoven 606a, b

Groups of prestressed elastic threads

608 Velcro

609 "Finger-Lift" band

Claims

6 claims
A1: The use of elastic side panels in diapers to improve the circumferential elasticity and fit, this consisting of a glued or welded laminate of two or more substrates and two sets of parallel pre-stretched elastic threads, which are arranged in the stretched state at an angle of 3-45grd such they transfer the pulling forces of the single- or multi-part closure system wide in the anchoring zone between the side panel and the diaper (Figure 6a).
A2: aligned to claim A1, but characterized in that one of the groups of elastic threads at an angle of +/- 5grd in the stretched state to the circumferential direction of the diaper ( "belts") direction (figure 6b).
A3: Claims to A1-A2, but characterized in that the elastic threads are used respectively in different thicknesses from each 100-5000 dTex and with individual pre-stretching of each 50-450%.
A4: A1-A3 by the claims, but characterized in that the distances of the pretensioned elastic threads of a group of thread to thread between 1 mm and 25mm may vary.
A5: Claims to A1-A4, but characterized in that diverge the threads of a group are not parallel, but the same of the thread to thread in each point of length between -7grd and 7grd, or may converge.
A6: Claims to A1-A5, but characterized in that a radius of curvature in the plane of the side panels of 10mm- 100m may have any thread of a group in each point of its running length.
A7: A1-A6 according to claims, but characterized in the each thread a group one or more discontinuous changes of direction ( "kink") may have (Figure 6c).
A8: Claims to A1-A7, but characterized in that the elastic threads 2-6 groups are used per side panel.
A9: Claims to A1-A8, but characterized in that the at least have one of their substrate layers together two mirror-image to be attached to a diaper side panel, resulting in a partially elastic belt around the back side of the diaper gives (image
PCT/EP2006/011184 2005-11-23 2006-11-22 Anatomically shaped, highly elastic elements for baby diapers and incontinence products WO2007059933A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH01869/05 2005-11-23
CH18692005 2005-11-23

Publications (2)

Publication Number Publication Date
WO2007059933A2 true WO2007059933A2 (en) 2007-05-31
WO2007059933A3 WO2007059933A3 (en) 2007-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/011184 WO2007059933A2 (en) 2005-11-23 2006-11-22 Anatomically shaped, highly elastic elements for baby diapers and incontinence products

Country Status (1)

Country Link
WO (1) WO2007059933A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2246020A1 (en) * 2008-02-04 2010-11-03 Unicharm Corporation Wearing article
US8529536B2 (en) 2008-04-18 2013-09-10 Dsg Technology Holdings Ltd. Elastic composite having cross-directional elasticity and a system and method for making the elastic composite

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297473A (en) * 1995-02-02 1996-08-07 Moelnlycke Ab Method of elastifying a substrate blank
JP2002192641A (en) * 2000-12-26 2002-07-10 Nippon Petrochem Co Ltd Method for producing transversely expandable/ shrinkable composite sheet
WO2003041627A2 (en) * 2001-11-14 2003-05-22 The Procter & Gamble Company Method of manufacturing an elasticized composite material
US20040222553A1 (en) * 2003-05-05 2004-11-11 The Procter & Gamble Company Method for making a stretch composite
WO2005096855A1 (en) * 2004-03-29 2005-10-20 The Procter & Gamble Company Disposable absorbent articles with zones comprising elastomeric components
WO2005115754A1 (en) * 2004-05-25 2005-12-08 Sandra Fenske Method for producing an elastic web material
WO2006020690A1 (en) * 2004-08-10 2006-02-23 The Procter & Gamble Company Elastomeric nonwoven laminates and process for producing same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297473A (en) * 1995-02-02 1996-08-07 Moelnlycke Ab Method of elastifying a substrate blank
JP2002192641A (en) * 2000-12-26 2002-07-10 Nippon Petrochem Co Ltd Method for producing transversely expandable/ shrinkable composite sheet
WO2003041627A2 (en) * 2001-11-14 2003-05-22 The Procter & Gamble Company Method of manufacturing an elasticized composite material
US20040222553A1 (en) * 2003-05-05 2004-11-11 The Procter & Gamble Company Method for making a stretch composite
WO2005096855A1 (en) * 2004-03-29 2005-10-20 The Procter & Gamble Company Disposable absorbent articles with zones comprising elastomeric components
WO2005115754A1 (en) * 2004-05-25 2005-12-08 Sandra Fenske Method for producing an elastic web material
WO2006020690A1 (en) * 2004-08-10 2006-02-23 The Procter & Gamble Company Elastomeric nonwoven laminates and process for producing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2246020A1 (en) * 2008-02-04 2010-11-03 Unicharm Corporation Wearing article
EP2246020A4 (en) * 2008-02-04 2011-12-28 Unicharm Corp Wearing article
US8529536B2 (en) 2008-04-18 2013-09-10 Dsg Technology Holdings Ltd. Elastic composite having cross-directional elasticity and a system and method for making the elastic composite
US8961487B2 (en) 2008-04-18 2015-02-24 Dsg Technology Holdings Ltd. Elastic composite having cross-directional elasticity and a system and method for making the elastic composite

Also Published As

Publication number Publication date
WO2007059933A3 (en) 2007-07-26

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