CN1127987A

CN1127987A - Absorbent article having a unitary release material joined to each side flap

Info

Publication number: CN1127987A
Application number: CN94192916A
Authority: CN
Inventors: 布鲁斯·W·拉瓦什; 托马斯·W·奥斯本Iii; 新原香
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1993-05-28
Filing date: 1994-05-04
Publication date: 1996-07-31
Also published as: EG20759A; AU6943894A; CA2163195A1; SG55160A1; EP0701423A1; WO1994027541A1; NO954833D0; AU694734B2; CA2163195C; JPH08510668A; MY110981A; FI955706A; BR9406729A; NO954833L; FI955706A0

Abstract

An absorbent article having a main body portion, a pair of flaps joined to the main body portion, and a unitary release material joined to a portion of each of the flaps such that the unitary release material superposes the flap adhesive when the flap is folded along a fold line. Each of the flaps form an included angle of about 180 DEG to about 270 DEG relative to the perpendicular axis of the main body portion.

Description

Engage the absorbent device that whole adhesive is arranged on each side flap

The present invention relates to disposable absorbent device (sanltary towel for example, incontinence adult's absorbent device etc.), particularly relate to the disposable absorbent device that has two side flaps and be used for two side flaps are joined to flap bonding agent on wearer's short underpants inner face.

The various absorbent devices that constitute for the liquid (for example menstruation, urine and feces etc.) that absorbs human body are arranged at present, and absorbent device (sanitary towel that particularly has flap) is open in many files, and can buy from the market.

Common two flaps bend from the edge that a center hygroscopic part stretches out and center on crotch area in the wearer to both sides.Like this, these two flaps just are placed in wearer's the edge in short underpants crotch district with between wearer's two thighs.

The effect of flap has two at least.At first, flap can prevent Excreta wearer's short underpants edge of making dirty, and secondly, when flap was fixed on the short underpants downside, flap is sanitary towel fixedly, prevented that it from shifting out the tram.

Below several pieces of U.S. Patent Publications have the sanitary towel of various types of flaps: the name of authorizing Van Tilbuvg on August 18th, 1987 is called No. 4687478 patents of the U.S. of " sanitary towel that has flap "; Authorized No. 4608047 patents of the U.S. that the Mattingly name is called " sanitary towel's bonded block " on August 26th, 1988; The name of authorizing Van Tilburg on May 20th, 1986 is called No. 4589876 patents of " sanitary towel " U.S.; The name of authorizing McN-aiy on August 25th, 1981 is called No. 4285343 patents of the U.S. of " sanitary towel "; The name of authorizing Rickard August 20 nineteen sixty-eight is called No. 3397697 patents of the U.S. of " the disposable healthy prevention cover that is used on the underwear "; And the name of authorizing Clark April 2 nineteen fifty-seven is called No. 2787271 patents of the U.S. of " sanitary towel ".

For flap being joined to the outer bottom of wearer's short underpants, to provide adhesive securement parts or flap bonding agent usually.The flap bonding agent will cover with release liner usually, so that prevent that this bonding agent is made dirty before it uses, prevents that bonding agent from becoming dry and prevents that it from adhering on the irrelevant surface.For flap being joined on the tram of short underpants, need earlier release liner to be torn off from flap, and then adhere on the outer bottom of short underpants.

After release liner is torn from the flap bonding agent, this release liner is abandoned, for the release liner of tearing from each flap, this layout need be utilized two handss.That is, user must maintain this flap with a hands, and with another hands this release liner of tearing.And need user to abandon the release liner of tearing from sanitary towel and flap.Therefore need a kind of sanitary towel with flap that can utilize a hands to handle and use.Also need to provide a kind of sanitary towel that need not abandon release liner.

Although flap has improved the effect of sanitary towel widely, however the flap of sanitary towel may overslaugh sanitary towel be adhered on wearer's the crotch of short underpants, at present, each flap of sanitary towel have one relatively the end that moves freely of sanitary towel be distal portion.In case after the wearer tore the release liner on the center pad, the distal portion of these two flaps just may drop on the crotch part of wearer's short underpants with between the sanitary towel, adheres to then on this center pad bonding agent.Therefore, need and a kind ofly can make the localized sanitary towel of flap, so that not overslaugh of flap is adhered to sanitary towel on the short underpants.

So, the purpose of this invention is to provide a kind of absorbent device, for example have folding flap and a sanitary towel that is used in the whole adhesive on the flap bonding agent, this adhesive only just can make the flap bonding agent expose to the open air with a hands in use, no longer need to handle the fragment of release liner, before flap uses, flap is remained under the folded state, sanitary towel is adhered to operation on the short underpants thereby flap can not disturbed.

Another object of the present invention provides a kind of absorbent device, for example has to be folded the flap that is inserted in the recessed joint district and to have the sanitary towel that is used in the whole adhesive on the flap bonding agent.

Another purpose of the present invention provides a kind of absorbent device, for example have the flap of turning up, whole adhesive and be used to reduce the sanitary towels in the zone of the different stretching, extension of having of stress performance with several, therefore, when the crotch edge of wearer's underwear bends and be fixed on this underwear outer bottom downwards, can reduce the stress that on these flaps, causes at these flaps.

Another object of the present invention provide a kind of have be folded and insertable side flap, the adhesive of an integral body and the sanitary towel in several zones with inhomogeneous extensible characteristic.

Also will make these and other some purpose of the present invention become more clear in conjunction with the accompanying drawings with reference to following explanation.

The invention provides a kind of absorbent device, for example have the sanitary towel of two flaps that folded and a whole adhesive.This absorbent device comprises: a main part, the a pair of flap that links to each other with main part, and whole adhesive that links to each other with the part of absorbent device, for example the flap bonding agent of at least one flap is covered by this integral body adhesive when a flap is folding along fold line, and the relative main part of each flap forms one at least about 180 ° angle.

Fig. 1 is the top plan view of the embodiment of sanitary towel of the present invention, and sanitary towel has several portions to be cut among the figure, so that demonstrate absorbent article core.

Figure 1A is the cutaway view of cutting open along the cutting line of Fig. 1 sanitary towel.

Figure 1B expresses the cutaway view that covers sanitary towel among the Fig. 1 of the flap on the flap bonding agent, under a kind of folded state with whole adhesive.

Fig. 2 is the top view of the embodiment of another sanitary towel of the present invention, in order to demonstrate absorbent article core the several portions of sanitary towel is cut away among the figure.

Fig. 2 A is sanitary towel's cutaway view that the cutting line A-A along Fig. 2 cuts open.

Fig. 2 B is the cutaway view of the sanitary towel of Fig. 2 A, and this illustrates flap and is folded and inserts the recessed joint zone, and whole adhesive is covered with flap adhesive.

Fig. 3 is the top view of the embodiment of another sanitary towel of the present invention.

Fig. 3 A is the sectional elevation of the sanitary towel of Fig. 3.

Fig. 3 B is the cutaway view of the sanitary towel of Fig. 3, and this illustrates flap and is folded and inserts the recessed joint zone, and whole adhesive is covered with flap adhesive.

Fig. 4 is the cutaway view of another sanitary towel of angle of taking from the sanitary towel of similar Fig. 2.

Fig. 4 A is the cutaway view of the sanitary towel of Fig. 4, and this illustrates flap and is folded and inserts the recessed joint zone, and whole adhesive is covered with flap adhesive.

Fig. 5 is the top view of the sanitary towel of an alternative embodiment of the present invention, the underwear side of this sanitary towel is towards the observer, its some parts is cut away, so that demonstration understructure, the flap folding so just covers the flap bonding agent on the whole adhesive on the whole underwear side of main part.

Fig. 5 A is the drawing in side sectional elevation of the sanitary towel of Fig. 5 of being got along cutting line A-A.

Fig. 6 is the perspective view of the crotch portion of a Women's panties.

Fig. 6 A is the perspective view of the crotch portion of knickers shown in Figure 6, and the sanitary towel of embodiments of the invention is placed in herein so that use, and its two flaps are unfolded and are fixed to the outer bottom of short underpants.

Fig. 6 B also is the perspective view of the crotch portion of lady's short underpants shown in Figure 6, and the sanitary towel that has the embodiment of the invention of the flap of having been hidden is placed in herein so that use.

Fig. 7 is the partial cross sectional view of the sanitary towel of available embodiment of the present invention, there is shown the part of a flap and main part.

Fig. 7 A is the partial cross sectional view of the sanitary towel of another available embodiment of the present invention, there is shown the part of a flap and main part.

Fig. 8 is the cutaway view of one embodiment of the invention sanitary towel, and this sanitary towel has the flap that several relative main parts form about 90 ° of angles.

Fig. 9 is the cutaway view of the sanitary towel of the embodiment of the invention, and this sanitary towel has the flap that several relative main parts form about 180 ° of angles.

Figure 10 is the cutaway view of the sanitary towel of the embodiment of the invention, and this sanitary towel has several flaps that relative main part forms about 270 ° of angles.

Figure 11 is sanitary towel's top view of the embodiment of sanitary towel of the present invention, this sanitary towel towards human body one side to the observer.

Figure 11 A is the partial sectional view of the sanitary towel among the Figure 11 that dissects along cutting line A-A.

1, introduces

A. about general absorbent device

The present invention relates to disposable absorbent device (for example sanltary towel), particularly relate to like this some and have the disposable absorbent device of flap adhesive that flap is fixed to the short underpants outer bottom of user.

" absorbent device " speech is meant herein and can absorbs and preserve the excremental article of human body, more clearly says, " absorbent device " is meant in order to absorb and to maintain the various Excretas of discharging from human body and be attached to or near the article of wearer's body." absorbent device " speech is to be used for summarizing sanitary towel, and pantiliner and incontinence patient are with filling up (with other article that are through interior crotch area)." disposable " speech is meant that use once promptly abandons, and certainly, preferably recovery becomes compost or handles (that is, not planning they are washed or preserve again and reuse as absorbent device) in the mode compatible with environmental conservation.

" sanitary towel " speech is that the confession under directions woman is worn near the article the pudendum at this, so that absorb and keep the various ejections that health discharges (for example blood, menstruation and urine).But the present invention is not limited to the absorbent device of particular type shown in the accompanying drawing or configuration.

" adhesive " or " residual plate " speech is meant that at this any binding agent (for example flap adhesive) that can prevent is before use made, prevented dirty adhesive dries and/or prevents that binding agent from adhering to irrelevant lip-deep material." whole adhesive " or " whole residual plate " speech is meant adhesive on a kind of part that is bonded on disposable absorbent articles at this." joint " speech is meant at this and comprises following three types structure, promptly is used to by the mode that parts directly is attached on another element these parts directly are fixed to structure on another element; Be used to this interelement ground connection is fixed to structure on these another parts by parts being attached to above the intermediate again the mode that this intermediate is fixed on another parts; And be used to make parts and another parts to form integral body, promptly in fact parts become the structure of the part of another parts.The example that a residual plate is connected in the sanitary towel probably comprises: a part that a release liner (for example being used for the release liner 58 on the center pad bonding agent 54) is fixed at least sanitary towel; A kind of material (for example silicones) coating (for example spraying, brushing, injection etc.) on the part of sanitary towel at least; (be that egative film, top flat, flap etc. join in the sanitary towel, this element is made up of a kind of suitable material, so that make at least a portion of these parts play suitable residual plate, or similar effect parts.Can make partly or entirely joining in the sanitary towel 20 of whole residual plate 57.For example, can pass through periphery, wall scroll or many closing lines, single or multiple points engage or face engages, and whole residual plate 57 is joined in the sanitary towel 20, whereby, the whole surface that makes whole residual plate 57 engages with the part of sanitary towel 20.

Fig. 1 illustrates a desirable embodiment of sanitary towel of the present invention.As shown in Figure 1, sanitary towel 20 mainly is made up of a main part 22 and two flaps that engage with main part 22 (illustrating under the state that stretches).Each flap has the residual plate 57 of a flap bonding agent 56 and an integral body.Main part 22 comprises one by the hygroscopic part of moisture absorption assembly 46 representatives.In desirable embodiment shown in Figure 1, whole residual plate 57 is made of the part of flap 24.Yet whole residual plate 57 also can be that top flat 40, egative film 42 etc. are formed by the part of main part 22.(in the discussion of back, except as otherwise noted, will there be two flaps in sanitary towel described here.Though not necessarily must there be two flaps in sanitary towel, there be two flaps to be superior to and have only a flap.In addition, though two flaps of sanitary towel not necessarily essential mirror-symmetrical, preferably mirror-symmetrical formula.Identical to the description of a flap like this with description to another flap, so for the sake of clarity, omit discussion about second flap.)

There are two centrages in sanitary towel 20, a main longitudinal centre line L and a main transverse centerline." vertically " speech is meant on the plane of sanitary towel 20 usually when one is used in this sanitary towel that at this health of the user of will stand divides straight line, an axis or the direction for the vertical plane collimation (or being similar to parallel) of left and right sides two halves equally." laterally " or " side direction ", these two speech can exchange at this, be meant the plane that is positioned at sanitary towel 20 and basically with vertical vertical straight line, an axis or a direction.

Sanitary towel 20 is by a top flat 40, and 42, one absorbent article cores 44 of egative film and a pair of flap 24 are formed.At least a portion of top flat 40 egative films 42 and absorbent article core 44 constitutes the moisture absorption assembly 46 of main part 22.At two flaps 24 shown in Fig. 1 and Figure 1A is that two independent material piece that are connected on the main part 22 are formed.(in some alternative embodiment, for example in the embodiment of No. 4917697 patents of the U.S. of authorizing Osborn, two flaps 24 can be in aggregates with main part.In this case, top flat 40 can constitute a face of two flaps 24 and main part 22, and egative film 42 can constitute their another side.In addition, the hygroscopic material of sanitary towel 20 can extend to two flaps 24 so that form the flap absorbent article core, this in No. 4917697 patents of the U.S., described in detail.) in a concrete desirable embodiment, the also additional attaching means 78 of main part 22, attaching means 78 joins on the absorbent assemblies 46, so that form a recessed joint district 68 between the absorbent assemblies 46 of attaching means 78 and main part 22.

2, constitute the single parts of absorbent device.

At first describe the single parts that constitute sanitary towel 20 in detail.

A. top flat

Top flat 40 can see through liquid, and when sanitary towel 20 was in user mode, top flat 40 was close to nearly wearer's skin.Top flat 40 is submissive, soft feel and wearer's skin is not stimulated.It can be by any material that is fit to this class application.The example of indefiniteness that is suitable as the material of top flat is weaving and polyester, polypropylene, nylon and cotton yarn nonwoven, and the thermoplastic porous film, and porous membrane is comparatively desirable.

Some porous membranes that are fit to have been described in following patent document; The name that December in 1975 was authorized Thompson on the 30th is called No. 3929135 patents of the U.S. of " having taper absorbent structure capillaceous ", the name of authorizing Mullane and Smith April 13 nineteen eighty-two is called No. 4324426 patents of the U.S. of " having the anti-disposable absorbent device that stains top flat ", the name of authorizing Radel and Thompson August 3 nineteen eighty-two is called No. 4342314 patents of the U.S. of " flexible plastic sheet with like fibrous performance ", authorized Ahr on July 31st, 1984, Louis, it is that they can see through liquid but do not absorb liquid as the reason of top flat 40 that No. 4463045 patents of the U.S. that the name of Mullane and Ouellette is called " having the non-smooth and porous three-dimensional plastic sheet of the microcosmic sense of touch cloth-like of surperficial visual sense " are recommended perforated membrane.Thereby the porous membrane surface that contacts with human body is kept dry, make the wearer feel more comfortable.

Sanitary towel 20 can also comprise that some can extend the part of (extensible, particularly longitudinally elongation) when wearing on health.The extending scope of sanitary towel 20 its not extended length about 15% to about 40% between.This elongation performance can make sanitary towel's performance in use next to the shin good, comfortable and few contaminated.In further embodiments, only some qualifying parts of sanitary towel 20 can stretch.Such embodiment (not using whole adhesive of the present invention) is called in the name of examining of being submitted on October 1st, 1991 by people such as Bruce Lavash in No. 07/769891, U.S. application of " absorbent device with flap and local zones of extensibility " more detailed description.

With in this embodiment desirable especially top flat 40 is to make and carry out looping mill rolling according to No. 4463045 patents of the U.S., so that make sanitary towel have certain vertical extending performance.The technology that is suitable for looping mill rolling or " wrinkling in advance " has description in following patent document: No. 4107364 patents of the U.S. of authorizing Sisson on August 15th, 1978, that authorized Sabee on May 30th, 1989 has No. 4834741 patents of the U.S. of commonly-assigned us with the application, be called No. 07/662536 patent application of the U.S. in examination of " elongation that is used for making the lamination sheet increase the stretching, extension zero stress is so that give improving one's methods and installing of the fear property of this lamination sheet " on February 28th, 1991 by the name that people such as Cerald M.Weber submit, on February 28th, 1991 was called No. 07/662537 patent application of the U.S. of " this synusia is elastic improves one's methods and install to give to be used to make the lamination sheet to increase to stretch the zero stress elongation " by the name that people such as Kenneth B.Bue-ll submit, and was called No. 07/662543 application of United States Patent (USP) of " make lamination produce the zero stress elongation continuously and do not break improving one's methods and installing of this lamination so that give this lamination elasticity " on February 28th, 1991 by the name that people such as Gerald M.Weber submit.The trend of these fold lines of top flat should be vertically tensile so that make top flat along laterally.

Detailed description to this top flat is arranged in following patent application, they are: be called No. 07/734404 patent application of the U.S. of " moisture absorption works comfortable and next to the shin, particularly sanitary belt with the flow direction through improving " on June 23rd, 1991 by the name that people such as Thompson submit; The name of being submitted by people such as Thompson is called No. 07/734392 patent application of the U.S. of " fluid containment structure that uses " in absorbent device; The name of being submitted by Buenger etc. is called No. 07/734405 patent application of the U.S. of " being used in the absorbent article core on the sanpro "; Can weave together these patent applications as " capillary channel fiber " patent application reference paper.

In addition, in desirable embodiment of the present invention, at least the part of top flat 40 outer surface 40a is handled with surfactant, preferably make surfactant go up substantially equably and fully be distributed on the outer surface 40a of that part of top flat 40 of main body covered part 22, can for example can use spraying with the known any technology of those skilled in the art of the present technique, contaminate, or roll surfactant is coated onto with transfer and finish this technology on the egative film 40.

With surfactant the outer surface 40a of top flat 40 is handled and to make the surface of top flat 40 more hydrophilic.This will make fluid ratio the faster top flat 40 that sees through not handled on the surface, so just can reduce menstrual fluid outflow top flat 40 and the probability that do not absorbed by absorbent article core.Those parts that cover two top flats 40 on the flap 24 had better not be handled with surfactant, can reduce like this and fluid take place, thereby prevent the other parts contact of fluid with wearer's two thighs and health along the tendency to flap extending transversely.

In some desirable embodiment, the inner surface 40b of top flat 40 is fixing with absorbent article core 44 contacts, and is faster under the situation of the top flat 40 that the velocity ratio that this contact relation can make fluid see through top flat does not contact with absorbent article core 44.Utilization is coated onto bonding agent top flat 40 is kept and the contacted states of absorbent article core.In No. 4917697 patents of the U.S., described and be suitable for this purpose bonding agent.Applying adhesive can adopt and surfactant is coated onto method identical on the outer surface of top flat 40.

B. absorbent article core

Absorbent article core 44 is positioned between top flat 40 and the egative film 42.Absorbent article core 44 is parts that absorb menstrual fluid.The total amount of the menstrual fluid that the moisture absorption capacity of absorbent article core 44 needn't absorb than expection is a lot of greatly.That absorbent article core 44 normally can compress and have comfort, wearer's skin is not stimulated.It can be made of any material that is used for this purpose technology.Comprise as an example: be commonly referred to the wood pulp of the pulverizing of airfelt, corrugated cellulose wadding, hygroscopic foam material, moisture absorption sponge, synthetic staple fibre, polymer fiber, the polymeric gelling agent of formation hydrogel, the combination of peat moss floss or any material that is equal to or these materials.

Polymeric gelling agent is to suck these liquid and those materials of forming hydrogel when same fluid (being liquid) (for example water or human body fluid) contacts.Adopt this mode, the fluid that is discharged on the absorbent article core 44 can be collected by this polymeric gelling agent and hold, thereby makes these absorbent devices have higher moisture absorption capacity and/or improved and preserved fluidic performance.

The polymeric gelling agent that is adopted in the absorbent article core 44 is mainly by a kind of polymeric material granulometric composition that can form hydrogel water-fast basically, slight crosslinked, that part is neutralized." granule " speech herein can refer to the granule of Any shape (for example ball shape, fragment shape or fibrous etc.).The characteristic (polymeric material of the preferred type that includes but not limited to here to be adopted and can be used for prepares the method for those preferred types of these aggregated particles) of absorbent article core 44 has been described in No. 5009653 patents of the U.S. that authorizes Osborn and those patent documents of quoting as proof as a reference (their description is quoted as proof as a reference by the application) in more detail.

In a desirable embodiment, absorbent article core 44 is laminated products, this laminated product is by being positioned at two air-flow method fabrics, and promptly the layer of the super absorbent polymer material (for example being grain shape) between first and second tissue layer (or " top " and " bottom " tissue layer) constitutes.This first and second tissue layer provides the maintenance layer of a super-absorbent polymer materials, has improved absorbed excremental horizontal siphon adduction on the whole absorbent article core and the absorbability that provides to a certain degree.

A kind of suitable laminated product is can be from Grain Processsing Corporati-non of Muscatine, the superabsorbent laminated product WATER-LOCK L535 that Iowa obtains (WATER-LOCK is the trade mark of Grain Processing Corporation registration).Following patent document has been described these superabsorbent laminated products, they are: the name of authorizing people such as Pedersen on August 21st, 1984 is called No. 4467012 patents of the U.S. of " component of hygroscopic film and preparation method ", and the name of authorizing Lindsay on April 7th, 1981 is called No. 4260443 patents of the U.S. of " lamination moisture absorption technology ".

This absorbent article core 44 can be an aforesaid laminated product, and this laminated product is cut out some slits or the part is cut out some slits so that it has vertical extensible performance.Cut out some slits or the local absorbent article core that is cut out some slits has detailed description in the capillary channel fiber patent application document about this.

C. egative film

Egative film 42 is an impermeable liquid, so just can prevent menstrual fluid wearer's the medicated clothing of making dirty.Can use any material that is used for this purpose in the prior art at this.The material that is fit to comprises the polyethylene film and the laminated fabric of embossing or non-embossing.A kind of suitable polyethylene film is produced by Monsanto Chemical Corporatino, is noted as Film No 8020 in commerce and trade.

In an alternative embodiment of sanitary towel 20 (the general only main body covered usually part 22 of top flat in this sanitary towel 20, and do not extend out the top surface that forms two flaps), egative film 42 can be made up of two-layer.In this case, egative film 42 can comprise and be placed on the ground floor by soft material system of egative film on that side of absorbent article core 42a that the purpose that this ground floor is set provides the comfortable and non-stimulated surface that can be close to wearer's body.This soft layer can be by any suitable material, and for example a non-woven material is formed.This soft layer preferably is made up of a hydrophobic nonwoven material.The second layer can be placed on egative film 42 on underwear side 42b, and can be made up of a fluid-tight thin film.Have found that, a kind of thickness be about 0.01 to 0.05mm preferably the low-density polyethylene film of about 0.02mm be well suited for as this second layer.A kind of polyethylene film is for example by Ethyl Corporation, and the XP-39385 type product that Visqueen Division sells is especially suitable for use as this second layer.Egative film 42 also can be made by the material of a kind of soft cloth-like hydrophobic with respect to top flat 40.A kind of polyester fiber or polyolefinic fiber backsheet also are good, the lamination that a kind of egative film 42 materials of desirable especially softish cloth-like are made up of one deck polyester non-woven material and thin film (for example authorizing the sort of lamination of the description in No. 4476180 patents of the U.S. of Wnuk on October 9th, 1984).

A kind of desirable extending egative film 42 is by the Findley Adhesives Comp-any of Wauwatos, the prescription that Wisconsin makes number is the tensile adhesive film of 198-338, and this adhesive film has detailed description in " capillary channel fiber patent application document ".

3, each parts are assembled into sanitary towel and form two flaps

A. the assembling of each parts

Shown in Fig. 1 and 1A, pre-sheet 40 is fixed on the egative film 42 along first seam (for example seam 36).Seam 36 can for example can be passed through formation such as gummed, crimping or heat sealing with being suitable for any known method of this purpose.Seam 36 shown in Fig. 1 be seam intactly around the example of the periphery of main part 22, this is a desirable embodiment who constitutes easily.(also can adopt other means that connect various parts).

Main part 22 be sanitary towel 20 comprise for example absorbent article core 44 that part of of absorbent portion.Main part 22 has a surface that sees through liquid with the human body contact (representing with top flat 40) and an opposite liquid-tight surface (using egative film 42 representatives in Figure 1A) in Figure 1A.Though described embodiment is a desirable embodiment, yet it is a kind of possible embodiment, this will be conspicuous.Some other possible embodiment comprises such an embodiment, in this embodiment, on being fixed on egative film before above absorbent article core 44 covered fully by top flat basically.Main part 22 can also comprise that has can be an enough independent absorbent article core that keeps globality, is to see through liquid on surface of this absorbent article core, and another surface is treatedly to make it liquid-tight.

Main part 22 can be quite thick or be rather narrow and approaches.Because the overall shape of sanitary towel 20 and the health that makes that main part 22 keeps near the wearer, so narrow main part 22 may be effectively, main part 22 is close wearer's vaginal orifice placement exactly.Like this, just can may be before two side flow of main part 22 at menstrual fluid (menstruation), its overwhelming majority is absorbed by main part 22.Thin main part may also need, and feels comfortably cool because it makes to wear all usually.

Fig. 1 and Figure 1A also show some fasteners, bonding agent joint elements for example, and center pad bonding agent 54 and flap bonding agent 56 utilize these fasteners and bonding agent that sanitary towel 20 is fixed in the crotch district of underwear.

Center pad bonding agent 54 provides the means that are adhesively fixed for main part 22 is fixed in the short underpants crotch district.Preferably flap bonding agent 56 is coated near the close flap distal edge on the outer surface of flap 24.Behind the edge that makes flap bonding agent 56 around the crotch part of short underpants as described as follows, flap bonding agent 56 just is used to help flap 24 is remained on certain position.By adhering to two flaps 24 on the short underpants or adhering to the location that can keep two flaps on the opposed flap.The bonding agent fastener that is fit to has detailed description in No. 4917697 patents of the U.S..

The fixed form of center pad of the present invention is not limited to the means of being adhesively fixed, and used any fastener can use at this in the prior art.For example can the main part 22 of sanitary towel 20 be fixed on wearer's the underwear by the fastener described in the following files, these files comprise: the name of authorizing Battrell August 7 nineteen ninety is called No. 4946527 patents of the U.S. of " pressure-sensitive adhesive fastener and manufacture method thereof ", on June 21st, 1991 was called No. 07/718727 patent application of the U.S. of " method for printing screen of the mechanical joint system that manufacturing can engage again and the mating system of utilizing this method to produce " by the name that people such as DennisA.Thomas submit, and these two pieces of files are quoted as proof as a reference by the application.For simplicity, will describe these fasteners by adhesive securement one speech.

Center pad bonding agent 54 is covered by a removable release liner (center pad release liner 58).Pressure adhesive should cover with release liner, so that prevented the bonding agent exsiccation of being made dirty before using, and prevents that bonding agent from bonding on the irrelevant surface.The release liner that is fit to has explanation in No. 4917697 patents of the U.S..

Shown in Figure 1B, flap bonding agent 58 is by 57 protections of whole residual plate.Being described in detail as follows of whole residual plate 57:

Except the desirable embodiment of sanitary towel of the present invention who has described, also has some other available and disclosed in the literature sanitary towel with flap structure.Can be used in whole adhesive of the present invention in these sanitary towels.Comprising disclosed sanitary towel in the following files: the name of being submitted by people such as Osborn on May 21st, 1991 is called the U.S.'s 07/707233 patent application of " sanitary towel with the side direction extendable members that can join on wearer's underwear "; be the U.S. 5009653 and No. 4950264 patents of " approaching and the sanitary towel of tool flexibility " respectively on April 23rd, 1991 and two pieces of titles of authorizing Osborn August 21 nineteen ninety; authorize Osborn April 17 nineteen ninety; people's such as III name is called No. 4917697 patents of the U.S. of " sanitary towel with flap and stress reduction member "; the name of authorizing VanTilburg on August 18th, 1987 is called u.s. id 4687478 patents of " the shaping sanitary towel that has flap "; the name of authorizing Van Tilburg on May 20th, 1986 is called No. 4589876 patents of the U.S. of " sanitary towel "; the name of authorizing McNair on August 25th, 1981 is called No. 4285343 patents of the U.S. of " sanitary towel "; the name of authorizing Rickard August 20 nineteen sixty-eight is called No. 3397697 patents of the U.S. of " sanitary towel of protection underwear "; and the name of authorizing Clark April 2 nineteen fifty-seven is called No. 2787241 patents of the U.S. of " sanitary towel ", and these patents that all are quoted as proof and patent application are all as the application's reference paper.

Authorized the absorbent device that No. 4738678 patents of the U.S. that the name of Osborn is called " short underpants lining " have been described the one-tenth short underpants lining shape that is fit on April 19th, 1988.Be called the product of having described at least in No. 07/637571 patent application of the U.S. of " having the absorbent device that rapid collection covers multilamellar moisture absorption body " in the suitable absorbent device of using for adult-incontinence on January 3rd, 1991 by the name that people such as Barry R.Feist submit.

Mentioned publication is all drawn as a reference by the application and quotes as proof in description of all these patents and patent application (with patent document of quoting in these files and corresponding foreign patent application) and the above-mentioned file.Be noted that and think these reference paper instructions or disclose the solution of the present invention.

B. the structure of flap

Below the characteristic of flap 24 will be described in more detail.Described in detail in the patent document as a reference below and can adopt general flap structure of the present invention (not having whole residual plate 57 of the present invention): No. 4917694 patents of the U.S. of authorizing Osborn, the name of being submitted by people such as Bruce Lavach on October 1st, 1991 is called No. 07/769891, U.S. application of " absorbent device with flap and different extension properties zone ", and is called No. 07/832246 application of the U.S. of " have inwardly folding rise pleat flap " on February 7th, 1992 by the name that Kaoru Niihara and Thomas W.Osbrn III submit.

The overall dimensions of flap 24 can be selected easily by those skilled in the art of the present technique.Preferably select the size of flap in the requsst listed below: sanitary towel two flaps 24 separately the width between two flap far-ends under the maximum rating for from about 10 to about 23cm, each flap edge be parallel to sanitary towel vertical main centre line L direction length preferably from about 5 to about 19cm., flap 24 may diminish to 0.5cm along the length that is parallel to vertical main centre line L direction.

The shape of flap 24 can be selected by those skilled in the art, preferably, but not only make two flaps 24 each other in mirror symmetry, and each

flap

26 and 28 halves also transverse centerline 1 symmetry of relative flap (be understood that, the shape of flap described here and orientation are a flap shape and orientations among the desirable embodiment, are not enforceable designing requirements.)

In sanitary towel 20 as shown in Figure 3, preferably make flap 24 on the position of the horizontal main centrage that departs from sanitary towel slightly forward, locate (transverse centerline 1 of flap not with the horizontal main central lines of sanitary towel 20) in this case.Yet, two flaps 24 are equated apart from the distance of vertical main centrage of sanitary towel.

In a desirable embodiment, flap 24 engages with main part 22 along closing line 30.The vertical relatively main centre line L of closing line can be (perhaps, but preferably be not convexity) concave, collinear.Closing line 30 can be made up of those lines that two discrete flap elements joined to main part 24 and zone.In addition, if two flaps 24 are in aggregates with main part 22, then closing line 30 can be represented the demarcation line (though not needing an accurate demarcation line) between main part 22 and two flaps 24.

Two flaps 24 can engage with main part 22 in many different ways.Relevantly can engage or be assembled to the declaratives that name that the many diverse ways on another parts authorize Osborn on April 16th, 1991 calls these speech in No. 5007906 patents of the U.S. of " sanitary towel of separation " to a kind of parts (for example flap 24) description is arranged.If two flaps are made up of discrete parts, then can join them on the main part 22 to those skilled in the art's technique known.These technology comprise (but being not limited to) bonding agent, heat and/or pressure, joint such as ultrasonic.

And the nonessential flap 24 that makes stretches out or engages along the longitudinal edge 22a of main part 22 from the longitudinal edge 22a of main part 22.Flap 24 also can engage towards longitudinal centre line inside (or in inboard) from longitudinal edge 22a.Like this, can make the main along the longitudinal centre line L of each flap 24 or join on the main part 22 along the longitudinal edge 22a of sanitary towel's main part 22 or between the vertical main centre line L of main part 22 and longitudinal edge 22a.Certainly, these two flaps 24 are usually on the relative both sides of vertical main centre line L.

C. whole residual plate

Fig. 1,1A and 1B show a desirable embodiment of sanitary towel of the present invention.Sanitary towel 20 of the present invention has a whole residual plate that joins to above it at least.As shown in Figure 1, preferably there are two whole residual plates 57 in sanitary towel 20, and promptly the flap bonding agent of each flap 24 has a whole residual plate.

The overall dimensions and the shape of whole residual plate 57 can be selected at an easy rate by those of ordinary skill in the art.When the size and dimension of the whole residual plate of design, preferably to consider to make at least it to overlap with flap bonding agent 56.Certainly, whole residual plate 57 also can be bigger than flap bonding agent 56.Also can cover on the flap bonding agent 56 of two flaps 24 with a whole residual plate 57.(size, shape and the orientation that is noted that whole residual plate 57 described herein is size, shape and the orientation of a desirable embodiment, rather than enforceable design feature.For example, each flap 24 can comprise that one is positioned near the whole adhesive 57 of the distal edge 34 of flap 24 and the flap bonding agent 56 of the side direction the inside that is positioned at whole adhesive 57).

Whole residual plate 57 should be any material with following performance: can prevent that flap bonding agent 56 from being made, preventing dirty 56 exsiccation of flap bonding agent and preventing that flap bonding agent 56 from adhering on the irrelevant surface.Whole residual plate also should so that keep the location before use always, be taken off yet should connect easily when flap 24 is prepared to use with enough sticky adhesive to the flap bonding agent.In addition, whole residual plate 57 is preferably flexible, so that do not influence the flexibility of flap 24.

Whole residual plate 57 is made up of the adhesive on the part that joins sanitary towel 20 at least to, and it can form with various method, for example, and can be by commercially available release liner being fixed to the whole residual plate 57 of sanitary towel's 20 top formation.The example of a suitable release liner is the casing paper of half bleaching, and that side of the contact bonding agent of this casing paper has been passed through silicone-treated, so that tear from flap bonding agent 56 easily.The example of other suitable release liner is BL 30 MG-A SILOX EI/O and BL 30 MG-A SILOX 4 P/O that made by Akrosil Corporation.Can release liner be joined in the sanitary towel 20 with the those of ordinary skill technique known in any present technique field.That these technology include but not limited to is bonding, heat and/or pressure, ultrasonic etc.

Whole residual plate 57 also can form by parts (for example top flat 40, egative film 42, flap 24 etc.) are joined to sanitary towel 20, makes like this to form one in whole or in part and can work the material that is fit to the residual plate effect.The examples of material that is fit to residual plate and can be used to form the some parts of sanitary towel 20 can be worked and anti-that knit and polyester on-woven may be comprised, polypropylene, nylon and polyethylene and plastic sheeting, these materials have been used the siloxane treated mistake, SILOX EI/O for example, SILOX4 P/O, SILOX HIA/O and SILOX, H ₂A/O, the material of all these trades mark are by Akrosil Corporation of Menasha, and Wisc-onsin produces.

Preferably make whole residual plate 57 utilize a kind of material for example siloxanes the part of sanitary towel 20 handled (for example brush, injection, impregnating) form, thereby make the part of the processing of sanitary towel 20 play suitable residual plate.The material that is fit to that is used to handle the some parts of sanitary towel 20 may comprise: siloxanes, the SILOX EI/O that is produced by Akrosil Corpora-tion for example, SILOX 4P/O, SILOX HIA/O and SILOX, H ₂A/O.

Whole residual plate 57 is preferably by using SILOX, H ₂The part of A/O spraying flap 24 forms.In a desirable embodiment, flap 24 is made up of the polyethylene film of a thickness about 0.001 inch (0.0003mm).

Whole residual plate 57 should be positioned in the sanitary towel 20 in the requsst listed below: flap bonding agent 56 will cover on the whole residual plate 57 when flap 24 is in folded state.Residual plate 57 is also kept flap 24 and is prepared to use up to flap 24 under folding shape.

Referring to Fig. 1 and Figure 1A, there is shown embodiment of sanitary towel of the present invention.Health A towel 20 is made up of a main part 22 and a pair of flap 24 that stretches out from each vertical side 22a of main part 22; This main part 22 is made up of a top flat 40, an egative film 42 and an absorbent article core 44 that is positioned between egative film 42 and the top flat 40.Near the whole residual plates 57 that each flap 24 is configured in by near the flap bonding agents 56 and the distal edge that is arranged in flap 24 34 proximal edge 32 of flap 24 are formed.The location of whole residual plate 57 should be carried out as follows: when the fold line 62 of a longitudinal extension folds, whole residual plate 57 will overlap with flap bonding agent 56 as flap that Figure 1B is shown in 24.

Though at the flap bonding agent 56 shown in Fig. 1 is big near the distal edge 34 that is arranged in flap 24, be that flap bonding agent 56 also can be arranged near the proximal edge 32 of flap 24, perhaps be arranged between the distal edge 34 of flap 24 and the proximal edge 32 on any position.In addition, though flap bonding agent 56 is disposed in the side direction outside of whole residual plate 57, also whole residual plate 57 can be arranged in the side direction outside of flap bonding agent 56.Yet, preferably flap bonding agent 56 is arranged in the outside of whole residual plate 57.Each flap 24 is had more than one flap bonding agent 56 and/or more than a whole residual plate 57.Yet, preferably make each flap 24 that a flap bonding agent sticking patch 56 and a whole residual plate 57 are arranged.

When the user of sanitary towel 20 plans to expose whole residual plate 57, when then flap 24 being fixed to her underwear outer bottom, the distal edge 34 that she only need rip flap 24 simply just can make flap 24 launch also to rip flap bonding agent 56 from whole residual plate 57 simultaneously under its folding shape.Whole adhesive 57 is bonded in the sanitary towel 20 all the time, but it can't have harmful effect to the function of sanitary towel 20.Preferably, make flap 24 launch also to shut down flap bonding agent 56 from whole residual plate 57 simultaneously under its folding shape, this operation only just can be finished with a hands.

Short underpants below in conjunction with the wearer illustrate sanitary towel of the present invention function in more detail.

Fig. 6 be a kind of usually by many women wear with and be called as the sketch map of crotch portion 14 of the sort of style of underwear 11.Underwear 11 is made up of a front portion 10, a rear portion 12 and a crotch portion 14 that engages with anter and rear panel.Crotch part 14 is made up of two lateral edges 16 and core 18.

Also sanitary towel 20 is fixed on the short underpants 11 by the release liner 58 of pulling center pad bonding agent 54; Just can use sanitary towel 20 of the present invention (shown in Fig. 6 B).The center of main part 22 is placed in the crotch portion 14 of short underpants, and at this moment an end of main part 22 stretches to the front portion 10 of short underpants, and its other end then stretches to rear portion 12.Egative film 22 is placed with the inner surface of the center crotch portion 18 of short underpants and contacts.Center pad binding agent 54 keeps main part 22 location.The distal edge 34 of flap 24 is caught and drawn to user, just can rip flap bonding agent 56 with whole residual plate 57.Then that the distal portions of flap 24 is folding round the lateral edges 16 of short underpants.Flap bonding agent 56 is fixed to flap 24 outer bottom (as shown in Figure 6A) of short underpants.Whole residual plate 57 is bonded on the flap 24 all the time, but the function of sanitary towel 20 is not had bad influence.

Though Figure 1B shows whole residual plate 57 and is engaged on the part of flap 24, however can not on a whole residual plate and the nonessential part that is fixed to flap 24.Also can join whole residual plate on any other parts of flap 24, main part 22 or sanitary towel 20 to.The example of an embodiment of sanitary towel of the present invention is that a whole residual plate is joined on the main part 22, and is such shown in Fig. 5-5B.

Referring to Fig. 5-5b, there is shown the embodiment of another sanitary towel 20 of the present invention.Sanitary towel 20 comprises: 42, one on 40, one egative films of a top flat are positioned at absorbent article core 44 and a pair of flap 24 that stretches out from each longitudinal edge of main part 22 between top flat 40 and the egative film 42.Each flap 24 comprises a flap bonding agent 56 that is arranged in the distal edge 34 of flap 24.

Sanitary towel 20 shown in Figure 5 comprises a whole residual plate 57 that is fixed on the underwear side of main part 22.Whole residual plate 57 shown in the figure is positioned between the longitudinal centre line and longitudinal edge 22a of main part 22.Whole residual plate 57 arranges according to following method, when flap 24 is folding along a longitudinal extension fold line 62 residual plate 57 is stacked on the flap 56, and makes two flaps, 24 their collapsed shape (shown in Fig. 5 A) of maintenance.

Center pad bonding agent 54 is two two discrete pressure adhesive sticking patch on the opposed end that is configured in main part 22.Because the shape and the layout of center pad bonding agent 54 and flap 24, flap 24 can not hinder or hinder the effect of center pad binding agent 54.Therefore, although sanitary towel is used, but flap can use also and can not use, and will can adverse influence not arranged, and promptly can not hinder it towards the trap of human body one side 20a and can not hinder its function towards underwear one side 20b center pad binding agent 54 to the functionality of sanitary towel 20.

Although the binding agent of center pad shown in the figure 54 is roughly two sticking patch that separate of the relative transverse edge 22b of close main part 22 of position,, center pad bonding agent 54 also can be according to the another kind of shape arrangement that identical result can be provided.For example, center pad bonding agent 54 can be orthogonal basically, and can extend along the longitudinal centre line between two distal edge of two flaps 24 that are collapsed shape.In addition, center pad bonding agent 54 can roughly form a Cranium Canitis shape, and is configured in the following manner on the underwear side 20b of main part 22: make center pad bonding agent 54 basically near the transverse edge 22b of the edge 35 of flap 24 and main part 22.The concrete size and dimension of center pad bonding agent 54 can be selected by those of ordinary skill in the art at an easy rate.

Have flap and have one be located at sanitary towel towards the sanitary towel of the adhesive surface of underwear side by E.P.O Publication 0471587, the A1 patent application is disclosed, the priority application of this part european patent application is No. 568937 patent applications of submitting to August 17 nineteen ninety of the U.S., and these two pieces of patent applications are incorporated in the application's the reference paper.

In an alternative embodiment, sanitary towel 20 can have one to be bonded on the whole residual plate 57 on the flap bonding agent 56 in the mode that can throw off and flap 24 is not folded on itself, also is not folded on the main part 22.Fig. 7 is a part of sectional elevation of a sanitary towel 20, there is shown the part of one of two flaps 24 and main part 22.In this embodiment, the part of whole residual plate 57 joins on the flap 24 at bonding zone 97.When residual plate when flap adhesive 56 is torn, residual plate still bonding zone 97 attached to flap 24 on, like this, user there is no need to handle or abandon this adhesive.Bonding zone can be one scattered bounding point, bounding point group, successive cementing line or bonding line segment.Bonding zone 97 can be arranged on horizontal inboard or the outside or the vertical front portion or the rear portion of flap adhesive 56.

Fig. 7 A illustrates another embodiment.After whole residual plate 57 was torn from flap bonding agent 56, user can be attached on the flap 24 again with the unclamp end of adhesives 98 with whole residual plate 57.So just, the end that unclamps that has prevented residual plate 57 moves freely and has prevented effectively interference to the use of flap 24.Adhesives 98 can be the adhesives that was arranged in whole residual plate 57 back sides on the flap 24 originally, also can be the adhesives that was arranged in originally on whole residual plate 57 and the flap 24.

D. the sanitary towel that has plug-in type flap and whole residual plate.

Under the most desirable situation (as the back is described in detail), there are two flap districts different with at least one extension property is arranged that are inserted into the recessed joint district in sanitary towel.Certainly, also can there be two flaps that are inserted into the recessed joint district in sanitary towel of the present invention, and does not have the different district of extension property.Fig. 2,2A, 2B show sanitary towel 20 of the present invention, and there are a whole residual plate 57 and a recessed joint district 68 that is used to admit flap 24 in this sanitary towel.

Be meant the flap that is inserted into or can be inserted into the absorbent device in the recessed joint 68 at this used " optional flap " or " flap that is inserted into ".Make at least its part can place between the absorbent assemblies of the discerptible part of a holder and main part if flap is engaged on the absorbent device, this flap can insert a recessed joint district exactly so.Referring to Fig. 2, sanitary towel 20 mainly comprises a main part 22 and two flaps (illustrating among the figure) that join on the main part 22 under deployed condition.Main part 22 is made up of absorbent assemblies and two holders of being represented by absorbent assemblies 46 78 that join on the absorbent assemblies 46.

Holder 78 is by a pair of petiolarea 93 and be positioned between two petiolareas 93 and join top center 94 to.The part of at least two petiolareas 93 joins on the absorbent assemblies 46.At least the part of center 94 can be taken apart or separates with absorbent assemblies 46.Form a recessed joint district 68 on discerptible center 94 and absorbent assemblies 46 intermediary zones, the part of at least one flap 24 can be inserted in this recessed joint district.Each petiolarea 93 engages with absorbent assemblies 46 at the abutment.Be meant the zone that engages on the absorbent assemblies of holder 78 and main part 22 at this used " bonding station " speech.These zones can have Any shape or figure.But they are not limited to some speckles or point.Therefore, these districts can be some chimbs, bar, alternate line, speckle etc.

But absorbent assemblies 46 preferably is made up of the top flat 40 of a transflective liquid, a liquid-tight egative film 42 and an absorbent article core 44 that is positioned between top flat 40 and the egative film 42 that engages with top flat 40.

Sanitary towel 20 comprises two recessed joint districts that can insert two flaps 24.But each recessed joint district 68 is formed between the separate section and absorbent assemblies 46 of center 94 of holder 78 of main part 22.There is an opening 76 in each recessed joint district 68.But opening 76 is formed between the longitudinal edge and main part absorbent assemblies 46 of separate section of holder 78.

Holder 78 can join on the absorbent assemblies 46 of main part 22 with many different modes.Parts " are joined to " or " being connected to " another parts on many methods according to the statement that has been defined as that is included in these terms in No. 5007906 patents of the U.S. that the name of authorizing Osborn on April 16th, 1991 calls " discerptible sanitary towel ".If holder is made of parts that separate with absorbent assemblies, promptly not when forming an integral body, then can join this holder on the absorbent assemblies 46 to technique known with top flat, egative film.These technology include, but is not limited to bonding agent, heat and/or pressure, ultrasonic etc.Bonding station 72 can be flange, bar, alternate line, the combination of speckle etc. or chimb, bar, alternate line and speckle etc.Therefore, bonding station 72 can be the line of recessed, a straight or evagination and can become arbitrarily angled with vertical main centre line L.

Each holder 78 can longitudinally main centre line L, perhaps the longitudinal edge 64a of absorbent assemblies 46 or in any engagement position between the longitudinal edge 46a of vertical main centre line L and absorbent assemblies 46 to the absorbent assemblies 46 of main part 22.Certainly, holder 78 is usually located on the relative both sides of longitudinal centre line L.

Holder 78 is orientated basically along the longitudinal on absorbent assemblies 46.When the longitudinal edge 78a of holder 78 was orientated on the direction that is being parallel to vertical main centre line L basically or has on the direction that is arranged essentially parallel to vertical main centre line L component of a vector, holder was got longitudinal direction on absorbent assemblies 46.

Holder 78 be basically soft feeling arranged and wearer's skin do not stimulated.Holding piece 78 is preferably by the suitable material that is generally used for sanitary towel 20, can comprise as the suitable examples of material of holder 78: weaving and polyester nonwoven, polypropylene, nylon and polyethylene, and plastic sheeting.Holder 78 can be made of the parts (for example top flat 40, egative film 42 etc.) of one or more absorbent assemblies 46, however holder 78 discrete materials of opening such as a slice and top flat, egative film preferably.

The overall dimensions of holder 78 can be selected by those skilled in the art, and if the words that two flaps are inserted in the recessed joint district 68 also will depend on the required size and dimension in recessed joint district 68 and the size and dimension of flap 24.Though holder 78 and nonessential be mirror symmetry each other can not, holder 78 is preferably mirror symmetry each other.Whether holder 78 is symmetrical in the size and dimension that horizontal main centrage T also depends on desired recessed joint district, also depends on the position and the symmetry of two flaps 24.Yet much less, holder 78 does not need to have shape, size or the position of the size, shape and the position that accurately meet two flaps.Only require that size, shape and Position Design with holder 78 must make holder 78 can form the recessed joint district 68 of a flap 24 that can hold to be stacked state.

And shown in the nonessential Fig. 2 of elephant-2B two holders 78 are formed by a single material piece can not.Each holder can be made an independently material piece.Can not on the also also nonessential egative film 42 that holder 78 is joined to absorbent assemblies 46.The different shape that forms a recessed joint between the absorbent assemblies of the main part of holder 78 and sanitary towel 20 is conspicuous for ordinary skill.

Referring to Fig. 2-2B, there are two recessed joint districts 68 in sanitary towel 20, has one in every side of longitudinal centre line.As can be seen, two flaps 24 form an integral body with two holders 78 from Fig. 2 A and 2B.The bonding station of each holder 78 comprises the combination of a straight cementing line 92 and two bounding points 91.Cementing line 92 joins the part of the core of holder 78 on the absorbent article core assembly 46 to.Two bonding points 91 join the part of petiolarea on the absorbent assemblies 46 to.The part of the center that separates with the absorbent assemblies 46 of main part 22 forms recessed joint district 68.Though bonding point 91 shown in Figure 2 is to be set near the longitudinal edge of main part 22, also bounding point 91 can be arranged on the longitudinal edge 22a and any position between vertical main centre line L of main part 22.

Fig. 2 B is the sectional view of the sanitary towel 20 of Fig. 2 A, is inserted into the flap 24 in recessed joint district 68 shown in the figure with folded form.Each flap 24 of sanitary towel 20 have first a vertical pleat 62 that upwards is converted into towards absorbent assemblies 46 ' and second pleat 62 that makes progress and line up equally towards absorbent assemblies 46 ".So just, form a pleat that is shaped as a S shape by stacked flap 24.This shape makes the distal edge 34 of flap 24 form a hands and pinches tongue piece 90.

Preferably make each insertion flap 24 have a hands and pinch tongue piece 90.Be meant 20 1 parts of sanitary towel or part this used " hands is pinched tongue piece ", it is 68 outstanding from the recessed joint district, and can be used for flap 24 is pulled out from recessed joint district 68.Hands pinch tongue piece 90 can laterally reach absorbent assemblies 46 longitudinal edge 46a the outside or can laterally reach the outside of the longitudinal edge 78a of holder 78.Preferably making hands pinch tongue piece 90 laterally reaches outside both longitudinal edges of absorbent assemblies 46 and holder 78.Hands is pinched tongue piece 90, and to stretch out at least about 2mm be desirable from recessed joint district 68 to about 5mm, and hands is pinched tongue piece 90 and stretched out about 5mm from recessed joint district 68 extremely about 10mm is more desirable.Desirable hands is pinched tongue piece 90 and is stretched out from the oral area in recessed joint district 68 by flap is 24 folding, pleating or wrinkling, as to make flap 24 distal edge 34 and form.There are many different folding modes can both cause flap remote edge 34 to be stretched from the oral area 76 in recessed joint district 68.Form the example that hands is pinched the desirable especially folding mode of tongue piece 90 at remote edge that can cause flap 24 shown in Fig. 2 B, 3B and the 7A.Some other suitable folding mode will be conspicuous to those of ordinary skill in the art.

On June 30th, 1992 by Thomas W.Osborn, No. 07/906629 patent application of the U.S. that the name that III and Bruce W.Lavash submit to is called " absorbent device with plug-in type flap " common transfer in examination has described the method with plug-in type flap 24 and various formation recessed joints district 68 in detail.This piece patent application is incorporated in the application's the reference paper.

Flap 24 comprises a bonding agent 56 and a whole residual plate 57 that joins on the flap.Flap bonding agent 56 is disposed generally near the distal edge 34 of flap 24.Whole residual plate 57 be arranged between the distal edge 34 of flap 24 and the proximal edge 32 on that side 20b of underwear.For flap 24 is inserted in the recessed joint districts 68, make flap 24 folding along the fold line of a longitudinal extension (in Fig. 2 B for fold line 62 '), flap bonding agent 56 is covered and the mode that can throw off is connected on the whole residual plate 57.Then that flap 24 is folding along the fold line of one second longitudinal extension (in Fig. 2 B be fold line 62 ' '), the fold line of winning is set within the recessed joint district 68.The distal edge 34 of flap 24 is stretched out from oral area 76, grab tongue piece 90 so that form hands.

When using the sanitary towel 20 of Fig. 2-2B, can tear the release liner 58 of center pad bonding agent 54 earlier off, then sanitary towel 20 by being placed on as shown in Figure 6 on the short underpants 11.The center of main part 22 is placed on the crotch part of short underpants, an end of main part 22 is launched towards the front portion 10 of short underpants, make the other end 12 expansion towards the rear portion.Make egative film 42 divide 18 inner surface to contact with the center crotch portion of short underpants 18.Center pad bonding agent 54 keeps main part 22 location.Flap 24 is positioned in the recessed joint district 68 all the time.Upwards draw on the position of short underpants trunk under the wearer.Though flap 24 is not used, and still be inserted in the recessed joint 68, flap 24 will can not damage the normal function of use of sanitary towel 20.

On the other hand, also can be earlier when using the sanitary towel 20 of Fig. 2-2B from center pad bonding agent 54 release liner 58 of tearing, then sanitary towel 20 is placed on the short underpants 11, makes an end of main part 22 stretch to the forward part of short underpants, and make main part 22 other ends stretch to rear section 12.Then, user can be caught hands to pinch tongue piece 90 and pull out flap 24 from recessed joint district 68, makes the flap bonding agent with whole residual plate 57 separately simultaneously.Round the distal edge of the folding flap 24 of the lateral edges of short underpants, join flap bonding agent 56 to as shown in Figure 6A short underpants outer bottom.Upwards draw short underpants then to the position of wearer's following trunk.

E. the sanitary towel that has local extending zone and whole residual plate

Under the most desirable situation, sanitary towel should have a local zones of extensibility (or elongation zone, or be called for short the district) 50 at least.As shown in Figure 3, preferably there are four local zones of extensibility 50 in sanitary towel 20, and is individual by sanitary towel's 20 per quarts.These local zones of extensibility 50 are preferably along the part configuration of two flaps 24 around that folding fold line of wearer's short underpants crotch.This fold line usually along or arrange near the longitudinal seam 30 of each flap 24.Because " part ", " district " and " zone " these terms are as referring to general regional extent as used herein, so local zones of extensibility 50 and corner regions 52 are not limited to be in exactly those positions on the closing line 30.Usually, they will comprise those positions that are on the closing line and the peripheral region (comprising aforesaid fold line) of sanitary towel 20.Therefore, these longitudinal seams are fit to be used for approaching well the position of local zones of extensibility 50 usually.

It is because they generally include those " turnings " that form along the periphery of sanitary towel 20 like this that corner regions 52 is represented as.When sanitary towel was displayed on the plan view, " edge 35 that the turning appears at flap 24 passed through the place mutually with the vertical side of the edge 22a of main part 22.And nonessential make these edges intersect acute angle can not, also be like this concerning some boundary lines.Can be about the another kind of mode of describing corner regions 52 with reference to authorizing Osborn, No. 4917679 patents of people's such as III the U.S..Corner regions 52 described here is made of those districts with narrow slit or groove as shown in people's such as Osborn patent usually at least.For simplicity, can call these districts " trench area ", yet corner regions 52 of the present invention preferably has than narrow slit shown in the Osborn patent or the bigger area of groove.

Can call " flap corner regions " to those parts of the flap 24 in the corner regions 52 that is in sanitary towel 20.Though those parts of flap still are considered to constitute corner regions 52 in essence, still they are expressed as 52 separately '.

Fig. 3,3A and 3B show the embodiments of the invention with local zones of extensibility 50 of desirable type.In the embodiment shown in Fig. 3,3A and the 3B, has the some parts that local zones of extensibility 50 comprises the sanitary towel 20 that has formed slack on it.These parts of sanitary towel 20 comprise at least flap corner regions 52 '.

Gather then on the some parts of flap by playing pleat, make Fig. 3, the sanitary towel 20 among the embodiment shown in 3A and the 3B has slack.Basically longitudinally the fold line 62 of orientation makes 24 pleats of flap or it is folding.The trend of fold line 62 can be along the seam 30 of flap and main part 22 or in the outside (or even in inboard) of this seam.Those of flap rise pleat part (rivel) 64 preferably one be stacked on another top (promptly perpendicular to the planar direction of sanitary towel on folded mutually each other).In other embodiment, make these pleats gather and with they one line up by a ground.Make these play the constraint that pleat is partly gathered in opening or is subjected to opening by a flap rivel attaching means 66 along flap transverse centerline T1 configuration, a kind of sanitary towel so just is provided, has particularly had almost at horizontal tensile corner regions and two flaps 24 in laterally not extending center 27 (along flap transverse centerline T1).

Local zones of extensibility 50 preferably is positioned on when sanitary towel 20 is put on flap edge 35 and those aspects that medicated underpants underwear edge passes through mutually.

Can in very wide scope, change the gross area that local zones of extensibility covered.This area can cover the sizable part of sanitary towel, just will keep tensile hardly some part near the sanitary towel of at least some parts of main longitudinal centre line and cross central line.Can make main part 22 have local zones of extensibility along the whole connecting line 30 of flap 24.In the alternative embodiment of other, can make local zones of extensibility spread all over whole flap (for example, if make whole flap play vertical pleat).

With reference to figure 3,3A and 3B use roughly machine-direction oriented fold line 62 that flap 24 is pleating or folding again.The trend of fold line 62 can be along the seam 30 of flap and main part 22 with or at its outside (or inboard).The trend of these pleats is preferably along the length direction of seam 30.What a is stacked on another the top (promptly perpendicular to the planar direction of sanitary towel on folded mutually each other) to the pleat part (rivel) 64 of rising of flap.In further embodiments, these flatungs are held together and one by one ground arranging.Make these play pleat by a flap rivel attaching means 66 and partly gather the constraint that promptly is subjected to opening at opening along flap transverse centerline T1 configuration.A kind of sanitary towel so just is provided, particularly has flap 24 at tensile corner regions of transverse direction and not extending core 27 (along flap transverse centerline T1).

In the embodiment of one such pleat, can make flap have the fold line of arbitrary number.For example in the pleating embodiment of a form the most basic, can be with flap simply to folding and join on main part 22, holder 78 or the flap self along single line in a position of seam 30 inboards (this position preferably is in the district of flap transverse centerline T1) along seam 30 towards longitudinal centre line L.As seen, as shown in Figure 3A, flap should have two fold lines 62 at least.

Flap rivel attaching means 66 can be that any kind can prevent the unfolded suitable device of a pleat material part.Flap rivel attaching means 66 can be arranged along flap transverse centerline T1, perhaps make it leave flap transverse centerline T1 one segment distance.Yet flap rivel attaching means 66 preferably is arranged in along on certain position of flap transverse centerline T1.So just produce the flap with some pleats, these pleats can distribute in former and later two

half parts

26 and 28 moderates, so that realize the best fit along panty crotch.Flap rivel attaching means 66 is preferably towards relative with crease shown in Figure 3 67 folding mouthful 65.The local extending amount of flap will increase near the degree that folds mouth along with flap rivel attaching means 66.Flap 24 can have two flap rivel attaching means 66, and each such attaching means is set to along the transverse centerline 1 of each flap or spaced apart with this cross central line.Perhaps two flaps can have a single flap rivel attaching means that is cross over another flap from a flap.

At the flap rivel attaching means 66 shown in Fig. 3 A are " interior " limited parts, and promptly they rise between pleat or the folded part 64 at two of flap 24.In further embodiments, flap rivel attaching means 66 can be the parts that a kind of outside from the pleat part (or outside) clamps the pleat part of flap 24.

Flap rivel attaching means 66 can be any suitable structure.The flap rivel attaching means 66 that is fit to includes, but is not limited to bonding agent, ultrasonic cement, heat and/or engage pressure agent etc.These dissimilar flap rivel attaching means can form various infinite shapes, and these shapes can comprise: point, line, speckle etc.

Fig. 3 shows the embodiment of sanitary towel 20 of the present invention, and this sanitary towel 20 has two recessed joint districts 68, respectively has one in vertical each side of main centre line L, also has four local zones of extensibility 50, on the per quart of sanitary towel 20 part each one.These four local zones of extensibility 50 form by making flap 24 be folded to form a pleat, utilize a flap rivel attaching means 66 transversely main centrage T to fix each broken line of this pleat.

Each flap 24 of the sanitary towel 20 of Fig. 3 joins on the holder 78 along a jointing line 30, and holder 78 joins in the sanitary towel 20 along connecting line 72, has formed recessed joint district 68.The seam 30 of flap 24 is by a demarcation line representative between flap 24 and holder 78.Though between holder 78 and flap 24, do not have accurate demarcation line, the jointing line 30 of each flap 24 roughly be positioned at the connecting line 72 of holder 78 and flap 24 when it cannot not be launched into foldingly (being phozy) state and the longitudinal edge 22a of main part 22 roughly corresponding that part of between.

And nonessential with flap 24 join on the limited part 78 can not, much less, flap 24 can also join top flat 40 to, on egative film 42 or both, also can join on other parts of sanitary towel 20.Yet in desirable embodiment more of the present invention, flap 24 will join on the holder 78.In the most desirable embodiment, flap 24 will be in aggregates with the extension of holder 78.

Referring now to Fig. 3 A and 3B,, each flap 24 of this embodiment has a first 95 and a second portion 96.First 95 comprises that is flap rivel attaching means 66 fixed pleats 64.Second portion 96 comprises flap bonding agent 56 and whole adhesive 57.

There are two fold lines 62 that form pleats in the first 95 of each flap 24, article one fold line that forms rivel 64 be inwardly towards sanitary towel 20 towards underwear one side 20a.The second fold line that forms rivel 64 also inwardly towards sanitary towel 20 towards underwear one side 20b.That fold line 62 of the proximal edge 32 of the most close flap 24 is by one the first one-tenth pleat fold line 62 ' constitute when the pleat of first 95 is unfolded.The position " is made of one the second one-tenth pleat fold line 62 away from the fold line 62 of the proximal edge 32 of flap 24 when the pleat of first 95 is unfolded.

When the top plan view from Fig. 3 was seen sanitary towel 20, the rivel 64 of the first 95 of flap 24 was placed in the inboard of the longitudinal edge 22a of main part 22.So just, the rivel 64 of first 95 is arranged in the recessed joint district 68 between the egative film 42 of holder 78 and main part 22, at this moment flap 24 is according to being unfolded like that shown in Fig. 3 A or being inserted into like that by Fig. 3 A.

Referring again to Fig. 3,3A and 3B, the second portion 96 of each flap 24 comprises a flap bonding agent 56 and a whole residual plate 57.Flap bonding agent 56 is arranged near the distal edge 34 of flap 24, whole residual plate 57 is arranged near the first 95 of flap 24, like this, when the fold line 62 along a longitudinal extension folds second portion 96, flap bonding agent 56 will be superimposed upon on the whole residual plate 57 and in discerptible mode and join to above it.

When flap 24 when inserting recessed joint district 68 like that shown in Fig. 3 B, second portion 96 will comprise the fold line 62 of two longitudinal tensile strains.Fold line 62 forms pleat fold line 63 by one first and constitutes on the position of the most close first 95 when second portion launches.Fold line is on the position of the first of flap 24, when second portion launches, forms pleat fold line 63 ' constitute by one second.By the flap material of second portion 96 being folded to form first towards the underwear side and forming pleat fold line 63 towards egative film 42.The flap material of second portion 96 folding towards egative film 42 towards that side of underwear 42b, make flap bonding agent 56 and whole residual plate 57 into face-to-face relationship then, so that the flap bonding agent releaseably is fixed on the residual plate 57, so just form second form pleat fold line 63 '.This just make the second portion formation-S-broken line of flap 24 and be positioned at the first 95 of flap 24 and the egative film 42 of main part 22 between recessed joint district 68 in, the distal edge 34 of flap 24 is positioned on the oral area 76 in recessed joint district 68 or near it.When flap when inserting recessed joint district 68 like that shown in Fig. 3 B, preferably make hands of distal edge 34 formation of flap 24 pinch tongue piece 90, this hands is pinched the second portion 96 that tongue piece can be used for pulling out from recessed joint district 68 flap 24, and tears flap bonding agent 56 from whole residual plate 57 simultaneously.

Sectional elevation at a desirable especially embodiment of sanitary towel of the present invention shown in Fig. 4 and the 4A, embodiment is similar shown in embodiment shown in Fig. 4 and Fig. 3-3B, and promptly flap 24 is to join on the extension of the holder 78 on the egative film 42 of main part 22 along connecting line 72.Yet, at flap 24 by inserting like that shown in Fig. 4 A and when launching as shown in Figure 4, flap 24 is arranged by different configurations.

Referring to Fig. 4, can think still that each flap 24 has a first 95 and a second portion 96.The first 95 of flap 24 is by being formed by flap rivel attaching means 66 fixed rivels 64 and the whole residual plate 57 towards bodyside that joins first 95 to.Second portion 96 is made up of a flap bonding agent 56 on underwear side 96b that joins second portion 96 to.

The rivel 64 of the first 95 of flap 24 has the fold line 62 of two longitudinal extensions.When first 95 launched, that fold line of the proximal edge 32 of the most close flap 24 was by one first fold line 62 that forms pleat ' form.When first launches, " form by one second fold line 62 that forms pleat away from the fold line 62 of flap 24 proximal edge 32 slightly.By the flap material towards egative film 42 towards underwear side 42b be folded to form first fold line 62 that forms pleat '.By the flap material is folded to form second fold line 62 that forms pleat towards egative film 42 towards underwear side 42b ".By the rivel 64 of first 95 is fixing near the flap rivel attaching means 66 that is located substantially on each broken line oral area.The first of flap 24 also comprises a whole residual plate 57 towards the underwear side that joins first 95 to.

When top view is seen sanitary towel 20, first main part 95 of flap 24 is configured in the outside of the longitudinal edge 22a of main part 22.When launching as shown in Figure 4, make first 95 be positioned at the outside in recessed joint district 68 at flap 24 at last.The second portion 96 of each flap 24 comprises a flap bonding agent 56.Flap bonding agent 56 is configured near the distal edge 34 of flap 24 basically, and be positioned at second portion 96 on underwear side 96b.

When flap 24 when inserting recessed joint district 68 like that shown in Fig. 4 A, it is folding that second portion 96 will form pleat fold line 63 along first, and the flap bonding agent 56 of second portion is superimposed upon on the whole residual plate 57 of first 95.Then folding towards egative film 42 of first 95 and second portion 96 towards underwear side 42b, so as mainly to form one second form pleat fold line 63 '.Shown in Figure 44 A, make at last first 95 towards bodyside 9 5a basically with holder 78 towards bodyside 78 ' into face-to-face relationship; Into face-to-face relationship with egative film 42 basically towards bodyside 96a of second portion 96 towards the underwear side.So, make at last in the recessed joint district 68 between the first 95 of flap 24 and the egative film 42 that second portion 96 is positioned at holder 78 and sanitary towel 20.Preferably press shown in Fig. 4 A like that, when flap 24 inserts recessed joint districts 68, make the distal edge 34 of flap 24 form the hands that to catch and pinch tongue piece 90.

Some other method that has zones of extensibility about formation has a detailed description in following patent document, they are: the name of being submitted to by people such as Bruce W.Lavash on October 1st, 1991 is called No. 07/769891 patent application of the U.S. of " absorbent device with district of flap and different percentage elongations " and on February 7th, 1992 by Kaoru Niihara and Thomas W.Osborn, the name that III submits to is called No. 07/832246 patent application of the U.S. of " having the absorbent device that folded inside plays the pleat flap ", and these patent applications are incorporated in the application's the reference paper.

F. the sanitary towel that has whole adhesive and the band flap that is easy to the user use

As previously mentioned, be preferably in and be formed with hands on the flap and pinch tongue piece, catch so that make the distal edge 34 of flap 24 be suitable for user, and can at an easy rate flap be pulled out from the recessed joint district.Yet, because the distal edge 34 by tractive flap 24 is separated from each other flap bonding agent 56 and whole adhesive 57, so also be not suitable for user and use even importantly be not inserted among the embodiment in recessed joint district the distal edge 34 of each flap at flap.Therefore, some embodiment that do not form the recessed joint district of the present invention preferably have the flap that forms the about 180 ° of θ angles of angle at least, preferably make angle theta greater than 180 °, and preferable is to make angle θ greater than about 270 °.In desirable especially embodiments of the invention, the distal edge 34 of flap 24 should be when user from above be visible when seeing sanitary towel.

Do not form therein among the of the present invention desirable especially embodiment of sanitary towel in recessed joint district, two flaps 24 form one with respect to a vertical axis and are at least about 180 ° of angle theta, this angle theta is preferably greater than 180 °, and preferable is greater than about 270 °.To guarantee the location of flap 24 like this, so as to make user can be easily near and hold the distal edge 34 of flap 24, draw back flap antitack agent 56 from whole adhesive 57.

Referring to Fig. 8,9 and 10, as can be seen, the vertical relatively axis 69 of flap 24 that each is folding or one are parallel to this vertical axis 69 and form an angle theta, that be parallel to this vertical axis and straight line of being used to measure the flap angle theta with digital 69 ' represent.Be meant deflection angle between the extended line 71 in the distal edge of vertical axis 69 and flap at this used " angle theta " speech, when observing sanitary towel near the sectional elevation of horizontal heart line T, being got, can see this angle along flap.Phrase " extended line of distal edge " (or abbreviation " extended line ") is meant distal edge 34 point-blank the imaginary continuity of flap axis 73 by flap 24, if this axis is according to the identical angle continuity that is had on the far-end 34 of flap 24.Here employed phrase " distal edge " typically refers to when being launched fully at flap, and flap is apart from farthest that part of of longitudinal centre line L when observing flap 24 in the sectional elevation of being got according to flap transverse centerline T1 under the situation about promptly not giving a discount.In order to determine distal edge 34, can omit lighter wrinkle, folding line or discontinuity on the flap edge.This used " flap axis " speech be meant one roughly point to flap 24 towards bodyside 24a and the line in the intermediary supercentral imagination of underwear side 24b (watching flap 24) from the sectional elevation that dissects along the transverse centerline 1 of flap 24.

Be meant that at this used " vertical axis " one usually prolongs and be substantially perpendicular to longitudinal centre line L and perpendicular to the imaginary line of flap transverse centerline T1 by main part 22.Absorbent assemblies 46 and flap 22 are that vertical axis 69 is co-axial basically when observing sanitary towel 20 dissecing along flap transverse centerline T1 on the sectional elevation.

In Fig. 8,9 and 10 shown examples, list various angle theta.Referring to Fig. 8, this there is shown the partial sectional view of a sanitary towel 20, and this cutaway view is to dissect along the transverse centerline 1 of flap.Flap 24 forms an about angle theta of 90 °.When flap became 90 ° angle theta, flap 24 was the belows that are positioned at main part 22 as can be seen, and when center pad bonding agent 54 joined in the crotch portion of wearer's short underpants, the distal edge of flap 24 becomes basically can not be approaching.

Referring to Fig. 9, shown in the figure along the partial cross sectional view of the sanitary towel 20 that flap transverse centerline T1 cuts open.Flap 24 forms one about 180 ° θ angle.As can be seen, when flap formed an about angle theta of 180 °, 34 pairs of user of the distal edge of flap 24 were come-at-able.It can also be seen that, because the distal edge 34 of flap 24 is along outside the fold line 62 of longitudinal edge 22a that extends laterally outward to main part 22 and flap 24, even so after pad bonding agent 54 had joined on wearer's the short underpants, the distal edge 34 of flap 24 also was easy to by user approaching.

In shown in Figure 10 one concrete desirable embodiment, flap forms an about angle theta of 270 °.In this embodiment, after pad bonding agent 54 joined in the crotch portion of wearer's short underpants, flap 24 also was easy to by user approaching.Preferably flap 24 is joined on the top flat 40 by flap fixed engagement part 82.Flap fastener 82 can adopt bonding agent bonding, ultra-sonic welded or any other known fixing or welding means.

In a desirable especially embodiment of the present invention, when when sanitary towel is seen in the top, the distal edge of flap can be seen by user.Sanitary towel towards bodyside under observer's state, when when the direction that is approximately perpendicular to longitudinal centre line L and is approximately perpendicular to transverse centerline is observed sanitary towel's (i.e. top view), absorbent device of the present invention is considered to " observable from the top ".When the distal edge 34 of flap 24 along outside the fold line 62 of longitudinal edge 22a that laterally reaches main part 22 and flap 24 time, the distal edge of flap 24 is considered to " visible to the envoy ".

Figure 11 is the top view of an embodiment of sanitary towel of the present invention, the sanitary towel 20 among the figure towards bodyside 20a towards the observer.Figure 11 A is the partial sectional view of the embodiment of sanitary towel of Figure 11 of dissecing along section line A-A.The flap 24 of folding sanitary towel is stacked in the adhesive of each flap 24 and joins on the flap bonding agent 56 in peelable mode.The distal edge 34 of each flap 24 is along the outside of the fold line 62 of longitudinal edge 22a that laterally reaches main part 22 and flap 24.Therefore, 34 pairs of user of distal edge of flap 24 are visible when observing sanitary towel from the top.

Remove outside the far-end 34, when observing absorbent device from the top, what make close distal edge 34 also can be seen it being desirable by user at least about 1/8 inch to about 1 inch flap material.Preferable be make near distal edge 34 at least about 1/4 inch to 1/2 inch flap material 24 from above be visible when observing absorbent device to user.In a desirable embodiment, near the about 3/8 cun flap material distal edge 34 and the distal edge 34 from above be visible when observing absorbent device to user.

Figure 11 A is the partial sectional view of the embodiment of sanitary towel of Figure 11 of dissecing along section line A-A.Figure 11 A also is an example that has with the sanitary towel of the flap 24 of 69 one-tenth about 270 ° of angle theta of vertical axis of main part 22.

Though Fig. 9 and 10 shows some desirable embodiment of the present invention, the distal edge 34 of flap 24 is along outside the fold line 62 of longitudinal edge 22a that laterally outwardly reaches main part 22 and flap 24 in these embodiments, but, should be noted that, those have along laterally outwardly not reaching the longitudinal edge 22a of main part 22 and the flap of the distal edge 34 outside the flap fold line 62 is acceptable to user still, as long as flap 24 and the angle of vertical axis 69 formation at least about 180 °.Certainly, the distal edge 34 that makes flap 24 is along being desirable outside the fold line 62 of longitudinal edge 22a that reaches main part 22 and flap 24 laterally, can make like this from above when observing

sanitary towel

20,34 pairs of user of the longitudinal edge of flap 24 are visible.

The present invention has some embodiment like this, flap 24 forms one and is at least about 180 ° angle theta therein, but along outside the fold line 62 of longitudinal edge 22a that does not laterally outwardly reach main part 22 and flap 24, in these embodiments, the distal edge 34 of each flap 24 preferably is positioned at fold line 62 apart from the longitudinal edge 22a of main part 22 and flap 24 less than on 1/2 cun the position, and the distal edge of each flap 24 34 is preferable to be to be positioned at broken line 62 apart from the longitudinal edge 22a of main part 22 and flap 24 less than on 1/4 cun the position.In a desirable embodiment, the far-end 34 of each flap 24 is substantially perpendicularly aimed at the longitudinal edge 22a of main part 22 or the fold line 62 of flap 24, whichsoever all is set to apart from the longitudinal centre line L of sanitary towel 20 farthest.

Though the embodiment of these sanitary towels described herein has a flap adhesive and whole adhesive that joins on each flap 24, some are arranged, and flap adhesive and whole residual plate also are worthy of attentive consideration by the displaced embodiment of first and second parts from antiseized bonding sheet respectively therein.At this, can each all calls one " flap fastener " flap bonding agent 56 and adhesive 57.Be meant the bonding agent pad of forming by a first and second portion at this used " from the antitack agent pad " speech, this first and second portion respectively comprise a bonding agent on the part that joins them at least to, thereby first and second portion are bonded together with the form that can open.

The example from antiseized bonding agent pad like this is a bonding agent pad, wherein first and second portion respectively comprise bonding agent district and the antiseized district that arranges by following mode: the antiseized district of second portion is added in the first bonding agent district, and first's adhesive area is joined in the antiseized district of second portion in the mode that can open, make the antiseized district of first be superimposed upon in the second portion bonding agent district and second portion bonding agent district is joined in the antiseized district of first in the mode that can open.Be called in the name that December in 1992 was submitted to by Bruce W.Lavash and Cha-rles J Berg on the 17th in No. 07/991786 patent application of the U.S. of " absorbent device of the anti-sticky pad of tool " and described in detail by this absorbent device from the antitack agent pad, this piece patent application is organized in the application's the reference paper.

Another example from anti-sticky pad is such bonding agent pad, therein, first and second portion each join same on them to by one deck itself is bonding but also can be to antiseized bonding agent itself.The example from antiseized bonding agent that is fit to is the Nori/Nori PA400 that is provided from Japanese Nitto/Denko Company.Another example from antiseized bonding agent that is fit to is by Fuller.Adhesive Company of 1200 WoltersBlvd.Vadnais, Heights, and Minnesota 55110 produces, and its commodity are called Rel-ease Free Adhesise.December in 1992 7 days by Kaoeu Niihara, the name that Charl-es J.Berg and Bruce W.Lavash submit to is called in No. 07/991912 patent application of the U.S. of " having the absorbent device from antiseized bonding agent fastener " to be described in detail by this absorbent device from antiseized bonding agent pad, and this piece patent application is incorporated in the application's the reference paper.

The invention provides a kind of sanitary towel with flap of band flap bonding agent and whole adhesive, this integral body adhesive is stacked on the flap bonding agent when flap is folding along a fold line.

Though, specific embodiments more of the present invention have been described above in the mode of legend, but the various changes of other that done under the situation of the marrow of not violating the present invention program and remodeling all are conspicuous to the those of ordinary skill in the present technique field.

Claims

1, a kind of absorbent device of wearing usefulness on the user underwear, this absorbent device have a vertical main centrage and a horizontal main centrage, and this absorbent device comprises:

A main part, this main part have a vertical axis and comprise an absorbent assemblies by an absorbent article core and two longitudinal edges that separate;

One first flap and one second flap, each flap joins on this main part along a jointing line, these two flaps have a proximal edge and the distal edge away from this jointing line near this seam, this absorbent device is characterised in that: these two flaps comprise joint one first flap fastener and one second flap fastener thereon, make to be stacked on this second flap fastener when described flap this first flap fastener when a fold line is folded, and be fixed on this second flap fastener in peelable mode; And

Folding described flap and from above when observing this absorbent device, the distal edge of the distal edge of this first flap and this second flap is visible to user.

2, as wanting the described absorbent device of claim 1, it is characterized in that these two flaps respectively comprise the ledge of a distal edge, the distal edge ledge of this first flap and the distal edge ledge of this second flap form an about angle of 180 ° at least with the vertical axis of this main part respectively.

3, absorbent device as claimed in claim 2, the far-end ledge that it is characterized in that the distal edge ledge of this first flap and this second flap form one greater than about 180 ° angle with the vertical axis of this main part respectively.

4, absorbent device as claimed in claim 2, the distal edge ledge that it is characterized in that the distal edge ledge of this first flap and this second flap form one approximately greater than 270 ° angle with the vertical axis of main part respectively.

5, absorbent device as claimed in claim 1 or 2 it is characterized in that this first flap fastener comprises a flap bonding agent, and this second flap fastener comprises a whole adhesive.

6, absorbent device as claimed in claim 1 or 2, it is characterized in that: this first flap fastener comprises some bonding agent districts and some antiseized districts, this second flap fastener comprises some bonding agent districts and some antiseized districts, the layout in above-mentioned these bonding agent districts and antiseized district is carried out in the requsst listed below: the first flap bonding agent district fixture is tearable at least turns up the soil on the part in the antiseized district that joins this second flap fastener to, and on the part in the tearable at least antiseized district that joins this first flap fastener to of turning up the soil, the bonding agent district of second flap fastener.

7, absorbent device as claimed in claim 1 or 2, it is characterized in that: this first flap fastener comprises a bond layer, this second flap fastener comprises a bond layer, and wherein, tearable the turning up the soil of the bond layer of second flap joins on the bond layer of first flap.

8, absorbent device as claimed in claim 1 or 2, it is characterized in that: each among described two flaps all has a flap transverse centerline that intersects and absorbent device is divided into four 1/4th with the vertical main centrage of absorbent device/main part, described each four/part is formed near the first of this vertical main centrage and this flap transverse centerline with at the second portion in the outside of this first by one, that second portion of at least one of this absorbent device four/part is made up of a local zones of extensibility, and the degree that this part zones of extensibility can outwards stretch at transverse direction roughly is greater than the described first of described four/part.