CN1159750A - Anatomically shaped compound sanitary napkin - Google Patents

Abstract

A compound sanitary napkin including a primary absorbent member and a secondary absorbent member. The primary absorbent member has a length and width. The secondary absorbent member has a length and a width. The primary absorbent member and the secondary absorbent member have a common length. The primary absorbent member preferably includes an absorbent core and a fluid pervious topsheet superposed on the absorbent core. The secondary absorbent member preferably includes a fluid pervious topsheet, a fluid impervious backsheet joined to the topsheet and an absorbent element positioned between the topsheet and the backsheet. The primary absorbent member is affixed to the secondary absorbent member by union means. The width of the secondary absorbent member is at least 1.5 times the width of the primary absorbent member.

Description

Combined sanitary towel according to the anatomy shaping

The present invention relates to disposable sanitary towel.Herein, sanitary towel is considered to be designed to be worn on external absorbent device by the women with other vaginal secretions in order to absorb and to retain menstruation at intermenstrual period usually.Disposable sanitary towel mean use and dirty after the sanitary towel no longer cleaning and reuse and throw away.

In simple SANITARY NAPKIN CONSTRUCTION, disposable sanitary towel comprises that places the hygroscopic piece (being sometimes referred to as absorbent article core) between parts liquid and Body contact (being sometimes referred to as top flat or surrounding layer) and the liquid-tight overcoat (being sometimes referred to as egative film).Obviously, described hygroscopic piece can absorb and retain menstruation and other vaginal secretions.The parts of described and Body contact can make the people feel comfortable and dry and comfortable with the surface contiguous sense in varying degrees, can also make fluid flow into hygroscopic piece without restrictions simultaneously.Described overcoat can prevent the menstruation extruding or spill or other vaginal secretions wearer's the underwear of making dirty from hygroscopic piece.

Except that described three functional parts, usually, disposable sanitary towel also is furnished with and is used for sanitary towel is fixed on member near wearer's crotch district, even when the wearer moves, this member also can be finished its expectation function most effectively.In general, sanitary towel also is furnished with a bond that is fixed in the interior crotch district of wearer's underwear.

Though known in the past sanitary towel can both finish their expectation function, each traditional design is in the ability of absorb body fluids, aspect prevent to make dirty wearer's underwear and/or be consistent with wearer's body one or many-sidedly all have certain defective.

With regard to disposable sanitary towel, have two types usually at least.One class is used to be absorbed in the menstrual fluid of intermediate flow to more flow.This class sanitary towel has stronger absorbability.Usually by means of making sanitary towel have the absorbability that the thicker and bigger hygroscopic piece of volume reaches expection.Though the wettability power of described sanitary towel is quite high, cause because of hygroscopic piece is huge to a certain degree wear uncomfortable.

The second class sanitary towel is used for the few or flow of menstrual blood volume when low, and this class sanitary towel is commonly referred to pantiliner or underwear pad.This class sanitary towel is as one group, and is thinner, submissiveer, common also more comfortable than first kind sanitary towel.But the absorbability of the second class sanitary towel is generally poor than first kind sanitary towel.

In being issued to No. 4425130, the United States Patent (USP) that commonly-assigned us is arranged of DesMarais on January 10th, 1984, attempt to provide a kind of simple combined sanitary towel of the advantage in conjunction with described two class sanitary towels.This combined sanitary towel of DesMarais comprises a basic menopad and a briefs-protecting piece, thereby described two parts are made relative motion in their respective end portions this two ingredients that are connected with each other each other without restrictions along their common entire length.Described basic menopad can absorb a large amount of body fluid that the wearer discharges, and described briefs-protecting piece can protect wearer's underwear to avoid dirty.In use, the big motility of moving between basic menopad and the briefs-protecting piece can keep the contiguous wearer's of basic menopad crotch district, makes briefs-protecting piece keep linking to each other with wearer's underwear simultaneously.Though the big motility of moving between basic menopad and briefs-protecting piece can keep the crotch district of basic menopad near the wearer; but if the both sides of the edge that exceed briefs-protecting piece are moved in basic menopad side; then this mobile motility can cause deficient in stability, thereby underwear that can dirty wearer.

In addition, depend merely on the body fluid that the big motility of moving between basic menopad and the briefs-protecting piece still is not enough to be absorbed in wearer's vaginal orifice place.Basic menopad is too narrow to be enough to be in the external genitalia at least in part.The width that also can make basic menopad is greater than the distance between the labium majus, but (as the power that is produced by the parenchima of female external genital organs) should be the lateral compression state or have the side direction stickiness under the effect of less power, makes the part of basic menopad can be positioned at female external genital organs at least in part.By means of the applying ability under less power effect, between the operating period, described main absorbing component can keep comfortableness.In addition, described basic menopad preferably has elastic recovery capability, so that when the interface change of shape of pad and health pad and health are consistent.

For when doing basic menopad narrower, it is enough loose that the underwear keeper preferably can be kept with health is adaptive, make it to be enough to and to be connected and to be enough to cover underwear to prevent the underwear of making dirty with wearer's underwear is stable.

The present invention relates to a kind of and the adaptive combined sanitary towel of build, this combined sanitary towel comprises a main hygroscopic piece and the secondary hygroscopic piece with a certain length and width with a certain length and width.Described main hygroscopic piece and secondary hygroscopic piece have public length.Main hygroscopic piece comprises an absorbent article core and a saturating liquid top flat that overlays on this absorbent article core.Secondary hygroscopic piece comprises a saturating liquid top flat, a liquid-tight egative film that links to each other with described top flat and is in hygroscopic piece between described top flat and the egative film.By connector main hygroscopic piece is fixed on the secondary hygroscopic piece.The width of secondary hygroscopic piece preferably is at least 1.5 times of main hygroscopic piece width.Also can select the width of secondary hygroscopic piece to be at least 2 times of main hygroscopic piece width.The width that also can select secondary hygroscopic piece be main hygroscopic piece width about 3 times to about 8 times scope.

When main hygroscopic piece being fixed on the described secondary hygroscopic piece, preferably make not set distance the longest between the two adjacent fixation points less than 75% of described public length by connector.When being fixed to main hygroscopic piece on the secondary hygroscopic piece, also can randomly make the longest not set distance between the two adjacent fixation points less than 50% of described public length by connector.When being fixed to described main hygroscopic piece on the described secondary hygroscopic piece, also can randomly make the longest not set distance that connects between the two adjacent fixation points less than 25% of described public length by connector.Also selectively main hygroscopic piece is fixed on the secondary hygroscopic piece with the connector that roughly extends along whole public length.

Secondary hygroscopic piece can randomly comprise an adhesive securement that this combined sanitary towel is fixed on wearer's underwear or weak point crotch area part.Main hygroscopic piece can randomly comprise an elastic component.Main hygroscopic piece can randomly comprise a fluid barrier.Main hygroscopic piece can randomly comprise two sections or multistage.

Though claims of the application are specifically noted and have clearly been described protection scope of the present invention, can believe, can understand the present invention better by the description below in conjunction with accompanying drawing, the identical parts of same numeral representative in the accompanying drawing, wherein:

Fig. 1 is the top view of an embodiment of combined sanitary towel of the present invention;

Fig. 2 is the lateral plan of combined sanitary towel shown in Figure 1;

Fig. 3 is the cross-sectional view along the combined sanitary towel illustrated in figures 1 and 2 that 3-3 line among Fig. 2 dissects;

Fig. 3 A is the cross-sectional view of another embodiment of combined sanitary towel of the present invention;

Fig. 4 is the top view of another embodiment of combined sanitary towel of the present invention;

Fig. 5 is the top view of another embodiment of combined sanitary towel of the present invention;

Fig. 6 is another embodiment cross-sectional view of combined sanitary towel of the present invention;

Fig. 6 A is the cross-sectional view of the another embodiment of combined sanitary towel of the present invention;

Fig. 7 and 8 is the rough schematic view of sanitary towel's resistance to deformation test procedure;

Fig. 9 is the cross-sectional view of another embodiment of combined sanitary towel of the present invention;

Figure 10 is the cross-sectional view that dissects along the longitudinal axis along combined sanitary towel of the present invention;

Figure 11 is the cross-sectional view of the another embodiment of combined sanitary towel of the present invention;

Figure 12 is the cross-sectional view that dissects along the longitudinal axis along combined sanitary towel of the present invention;

Figure 13 is the combined sanitary towel of the present invention cross-sectional view of an embodiment again;

Figure 14 is the lateral elevational view of another embodiment of combined sanitary towel of the present invention;

Figure 15 is a kind of lateral elevational view of another embodiment of combined sanitary towel;

Figure 16 is the lateral elevational view of the another embodiment of combined sanitary towel of the present invention;

Figure 17 is the top view of combined sanitary towel shown in Figure 11.

The present invention relates to the adaptive combined sanitary napkin of a kind of and build, this sanitary napkin has and absorbs body fluid Ability, can protect wearer's underpants avoid dirty, and can with wearer's body fit. " defend herein Give birth to towel " word refers to that the women presses close to a kind of articles for use that the private parts district wears, it can absorb and retain in the body discharges Various excretas (such as blood, menstruation and urine), and use once afterwards and (namely no longer to clean or use it is discarded Alternate manner is preserved or is re-used). " combined sanitary napkin " word refers to a kind of by some independent part herein Consist of an integrally-built sanitary napkin thereby dividing connects together each other. Part is in wearer's pronaus In, part is between wearer's the lip of vestibular outside part also within the scope of the invention. Used herein " private parts " word refers to visible female external genital organs, and it is by labia majora, nymphae, clitoris and front The front yard limits.

Referring to Fig. 1-3, wherein show a preferred embodiment of associativity of the present invention sanitary towel 20.As arriving seen at Fig. 1-3, this combined sanitary towel 20 comprises a main hygroscopic piece 30 and a secondary hygroscopic piece 50 that is connected together by connecting elements 70 and main hygroscopic piece.

There are two surfaces in described combined sanitary towel: one with Body contact or body-facing surface with one towards underwear or the surface that contacts with underwear.Main hygroscopic piece and secondary hygroscopic piece respectively have corresponding body-facing surface and towards the surface of underwear.There are two centrages in combined sanitary towel 20, a longitudinal centre line and a cross central line." vertically " speech is meant straight line, axle or the direction in the plane of this combined sanitary towel herein, this plane usually with the vertical plane aligning (for example almost parallel with it) that when wearing combined sanitary towel, the wearer's that stands health is divided into left side and right-hand part." laterally " used herein or " side direction " speech can exchange, and it is meant straight line or axle or the direction that is in usually perpendicular in the plane of combined sanitary towel longitudinally.

Main hygroscopic piece 30 has lateral edges 24 and end margin 25, and described edge forms the periphery 26 of main hygroscopic piece together.Secondary hygroscopic piece 50 has lateral edges 21 and end margin 22, and described edge forms the periphery 23 of secondary hygroscopic piece and combined sanitary towel 20 together.This combined sanitary towel 30 has one first petiolarea 27, a center 28 and one second petiolarea 29.

As its name suggests, main hygroscopic piece 30 is the ingredients that can absorb the combined sanitary towel 20 of a large amount of body fluid that user discharges.Main hygroscopic piece 30 comprises a moisture-absorbent member 33 (as absorbent article core 34) and a saturating liquid top flat or a covering tablet 32 that overlays on the absorbent article core 34.

Top flat 32 is preferably submissive, soft feel, wearer's skin is had no stimulation.In addition, top flat 32 energy transflective liquids make liquid see through its thickness easily.The material that is fit to making top flat 32 is very extensive, for example weaving and non-woven material; As polymeric materials such as porous formed thermoplastic film, porous plastic film, hydroforming thermoplastic films; Porous foam; Reticulated polymer foam; The weblike heat plastic film; And thermoplastic scrim.The weaving and the non-woven material that are fit to can comprise natural fiber (as wood or cotton fiber), the synthetic fibers polymer fiber of polyester, polypropylene or polyethylene fibre (as comprise), or the mixture of natural fiber and synthetic fibers.Preferred top flat is a kind of porous formed film.Because porous formed film can see through Excreta in the body, not absorb described Excreta and can reduce that liquid backflows and the probability of rewetting profit wearers skin again, therefore porous formed film is preferred as top flat.Whereby, can keep dry with the formed film surface of Body contact, thereby can prevent the health of making dirty, make the wearer feel more comfortable.Be issued to people's such as Ahr No. 4463045, United States Patent (USP) on July 31st, No. 4342314 1 and be issued on April 9th, 1991 in No. 5006394, the United States Patent (USP) of Baird at the United States Patent (USP) that is issued to people such as Redal on No. 4324246, the United States Patent (USP), the August 3 nineteen eighty-two that are issued to people such as Mullane on No. 3929135, United States Patent (USP), April 13 nineteen eighty-two that December in 1975 was issued to Thompson on the 30th and all described some suitable formed films.Described each piece patent documentation is list of references of the present invention.As the preferred top flat of master's hygroscopic piece of the present invention be a kind of in described one or more patents disclosed formed film, its trade mark in sanitary towel is the P﹠amp by Ohio, the city of Cincinnati; (the The Procter﹠amp of G company; Gamble Company of Cincinnati Ohio) registers as " DRI-WEAVE ".

In a preferred embodiment of the invention, the formed film top flat be hydrophilic towards health face or exposure, therefore with towards hydrophilic the comparing of health face right and wrong, help flow of liquid and cross top flat, thereby can reduce that top flat is flowed out in menstruation and the probability that do not flow into absorbent article core and absorbed by absorbent article core.In a preferred embodiment, as on November 19th, 1991 by described in the U.S. Patent application serial number No.07/794745 that is entitled as " absorbent device " (" Absorbent Article Having a Nonwoven andApertured Film Coversheet ") of people such as Aziz application with nonwoven and perforated membrane cover plate, added surfactant in the polymeric material of formed film top flat, described application also is reference of the present invention.In addition, also can be described as No. 4950264, the United States Patent (USP) that is issued to Osborn August 21 nineteen ninety, with surfactant with top flat be processed into possess hydrophilic property towards the health face, this patent also is a list of references of the present invention.

Can top flat 32 be linked to each other with absorbent article core 34 with any mode that is fit to.Suitable manner include, but is not limited to spray glue or between top flat 32 and absorbent article core 34 mode of adhesive-applying line or point with bonding agent top flat 32 and absorbent article core 34 are connected together.

In addition or the fiber that adds with top flat 32 entanglement absorbent article cores 34 top flat 32 is linked to each other with absorbent article core 34, glue together the top flat 32 of naming a person for a particular job with some discontinuous discrete fusions and be melted on the absorbent article core 34, or top flat is linked to each other with absorbent article core with arbitrary known manner in the prior art.

In order to ensure the normal fluid that transmits between top flat 32 and absorbent article core 34, preferably common junction point or the interface by top flat and absorbent article core roughly is fixed on top flat on lower floor's absorbent article core 34 continuously.By means of top flat 32 roughly is fixed on lower floor's absorbent article core 34 continuously, can reduce top flat 32 and absorbent article core 34 isolating probabilities during use.Absorbent article core separates with top flat 32 and can hinder fluid and be sent to lower floor's absorbent article core 34 from top flat 32.

Absorbent article core 34 can be any generally can compress, can be adaptive, flexible, non-stimulated and can absorb and retain the endocrine moisture-absorbent member of body to wearers skin.Absorbent article core 34 can be made by the material that is usually used in the various absorption liquid in disposable sanitary towel or other disposable absorbent article.The example of suitable hygroscopic material comprises the wood pulps (being referred to as porous plug floss usually) of pulverizing, corrugated cellulose wadding, the cross-linked cellulose fibres of modification (be issued to people's such as Young United States Patent (USP) 5217445 described in) as June 8 nineteen eighty-three, capillary channel fiber (be issued to people's such as Thompson United States Patent (USP) 5200248 described in fiber) with fibrous inside capillary channel as on April 6th, 1993, hygroscopic foam material (be issued in No. 5268244, people's such as DesMarais United States Patent (USP) 5260345 and the United States Patent (USP) that December in 1993 was issued to people such as DesMarais on the 7th disclosed those) as on November 9th, 1993, add heat bonding gas shop (airlay) material [as the U.S. Patent application serial number 08/141156 (P﹠amp of on October 21st, 1993 with being entitled as of people's such as Richards name application " the moisture-absorbent member and the application in the menopad of conformability with improvement and comfortableness thereof of heat fusible layer " (" Catamenial AbsorbentStructures Having Thermally Bonded Layers For Improved Handling of MenstrualFluids and Their Use In Catamenial Pads Having Improved Fit and Comfort ") with menstrual fluid disposal ability of improvement; G reel number 5051) the sort of material disclosed in], polymerization gellant, peat moss floss or any equivalent material or these mixtures of material of moisture absorption sponge material, synthetic staple, polymer fiber, aquogel type.

Some suitable absorbent article cores are to be 07/743839,07/743950,07/743947 and 07/830159 (P﹠amp at the U.S. Patent application serial number; G reel number 4451,4452,4453, and 4453R) described in those foamed materialss, first, the 3rd, the 4th part of application of described application is with people's such as DesMarais name application, second part of application is with people's such as Young name application.The applying date of first three part application is on August 12nd, 1991, and the applying date of the 4th part of application is on February 12nd, 1992.Other absorbent article cores are disclosed those foamed materialss among the european patent application 0293208B1.Some absorbent article cores are the sponge materials described in No. 3,512 530, United States Patent (USP) and 3954 No. 493 and French Patent (FRP) 2203827.

For combined sanitary towel 20, the total absorptivity of absorbent article core 34 should adapt with the effusive effluent load of possibility.In addition, can change the wettability power of absorbent article core 34 for the effluent scale of construction that adapts to wearer's expection.For example, use by day and the use at night is compared, available combined sanitary towel with different wettability powers, or young women compares with middle-aged women, can use the combined sanitary towel of different wettability powers.

Preferably select submissive, soft, can be adaptive, can compress, resilient material is as absorbent article core 34, to improve and the matching property of health and the comfortableness of main hygroscopic piece.The best compressible winner of making of absorbent article core hygroscopic piece is subjected to less power and just can be out of shape between the normal operating period.Except that compressible, comprise that the described material of absorbent article core preferably can both be fitted, so that make main hygroscopic piece can improve around the labia neutralization and the cooperation around the perineum.Though when using under the less power effect that applies by female external genital organs main hygroscopic piece can be compressed and fit usually, make main hygroscopic piece have enough elasticity so that master's hygroscopic piece also is not important by permanent flattening when being subjected to normally wearing power.For main hygroscopic piece is closely contacted with women wearer's external genitalia, the elasticity that preferably makes main hygroscopic piece is greatly to the build fit that can be enough to the wearer.Closely contact to help to make with women's external genitalia and flow into main hygroscopic piece better and do not make the liquid effluent and/or flow out main hygroscopic piece from the effusive fluid of wearer.Though the elastic characteristic of absorbent article core 34 can improve matching property, must take into account softness and wearer and feel comfortable two demands.

In the embodiment depicted in fig. 3, absorbent article core 34 is made by porous plug floss.For conventional cylindrical main hygroscopic piece 30 is provided, make porous plug floss absorbent article core cylindrical usually.

Referring now to Fig. 3 A, it shows the cross section that dissects along the transverse axis of another embodiment of combined sanitary towel of the present invention.In this embodiment, the patent application serial number 07/743839,07/743950,07/743947 of preferably a kind of reference as described of absorbent article core 34 and 07/830159 (P﹠amp; G reel number 4451,4452,4453 and 4453R) in disclosed moisture absorption foam, described first, third and fourth part of application is to propose with people's such as DesMarais name, second part of application is that the name with people such as Young proposes.Can fold or roll described absorbent article core, make it have circular cross section commonly used.Folding core provides a kind of columniform main hygroscopic piece 30 commonly used that has.

Though the core 34 shown in Fig. 3 and the 3A also can be made absorbent article core various shape for circular cross section commonly used, as rectangle, triangle, ellipse, square, pentagon, the folding shape of U-shaped Z word etc.

Also can as shown in Figure 3A main hygroscopic piece 30 be chosen as an elastic component 45.This elastic component 45 can be single or several separated components.The suitable material that is suitable for use as elastic component 45 includes, but is not limited to nylon, polypropylene, polyurethane, polyethylene, polyester, synthetic rubber and as other synthetic material of formed film and so on, or as natural materials such as rubber, sponges, or can stop any suitable material that flattens in the normal condition of wearing between the operating period in sanitary towel.Elastic component 45 can be made different shape, as rectangle, triangle, ellipse, square, pentagon, U-shaped, the folding shape of Z word etc.

Elastic component 45 is extended on the whole length of main hygroscopic piece 30.Also can make 45 of elastic components extend through the part of main hygroscopic piece 30 length.Elastic component 45 can be installed in first petiolarea 27, center 28, second petiolarea 29 or in any combination region in described district.For example, can or be installed in first petiolarea 27 of main hygroscopic piece elastic component 45, or be installed in second petiolarea 29 of main hygroscopic piece, or be installed in first petiolarea 27 and second petiolarea 29 of main hygroscopic piece, or be installed in the center 28 of main hygroscopic piece, or be installed in the center 28 and two petiolareas 27,29 of main hygroscopic piece.

Main hygroscopic piece 30 also can randomly comprise one every liquid spare 35.Describedly absorbed fluid can be remained in the absorbent article core 34 every liquid spare 35, and can by with the constituting on the secondary hygroscopic piece 50 that be positioned at that below will describe with liquid-tight egative film character identical materials.

Main hygroscopic piece 30 also can randomly comprise the collecting layer 46 of one deck between top flat 32 and absorbent article core 34.Can there be several functions collecting layer 46, comprising improve on the absorbent article core 34 and absorbent article core in to excremental siphonage, by means of improving excremental siphonage, this collecting layer can make the Excreta that flows through absorbent article core distribute more equably.Collecting layer 46 can be made by some different materials, and these materials are: the nonwoven or the weaving wadding net that comprise polyester, polypropylene or poly synthetic fibers; Comprise cotton or cellulosic natural fiber; The composite fibre of described fiber; Or any equivalent material of described material or the combination of these materials.In the serial number that No. 4950264, the United States Patent (USP) that is issued to Osborn and December in 1991 name with people's such as Cree name application on the 17th is called " absorbent device with fused layers " (" AbsorbentArticle Having Fused Layers ") is 07/810774 patent application, the sanitary towel's example with one deck collecting layer and a top flat has been described more all sidedly all.Described every piece of patent documentation is reference of the present invention.In a preferred embodiment, the conventional means that links together by any net of will wadding a quilt with cotton connects collecting layer 46 and top flat, preferably connects collecting layer and top flat by the fusion gluing method of describing more comprehensively in the application of aforesaid Cree.

Though described main hygroscopic piece cross section under not stressed condition can be Any shape usually, preferably cross section is circular or oval.The length 40 of main hygroscopic piece 30 and width 41 can be stock size arbitrarily.Preferred main hygroscopic piece 30 is about from 2cm to 35cm, comparative optimization be from about 10cm to 35cm, most preferred is about 20 to 35cm long.The length of the main hygroscopic piece 30 of special recommendation is about 24cm.The width of preferred main hygroscopic piece 30 is from about 0.5cm to 5cm, comparative optimization be from about 0.5cm to about 4cm, most preferably from about 0.5cm to 3cm.

Referring to Fig. 1-3A, second of combined sanitary towel of the present invention must ingredient be secondary hygroscopic piece 50.This pair hygroscopic piece 50 preferably includes a saturating liquid top flat 52, a liquid-tight egative film 54 that links to each other with top flat 52 and an absorbent portion 56 that is between top flat 52 and the egative film 54.

Top flat 52 can be the tablet that is usually used in any transflective liquid in sanitary towel, the disposable diaper etc.It can be decide any tablet of top flat 32 of hygroscopic piece 30 of described usefulness.

Preferred top flat 52 is a kind of porous formed films.Because porous formed film can see through Excreta in the body, not absorb described Excreta again, and can reduce liquid and backflow and the probability of rewetting wearers skin, therefore preferably make top flat with porous formed film.So can keep dry with the formed film surface of Body contact, thereby can avoid the health of making dirty, make the wearer feel more comfortable.Be issued to people's such as Ahr No. 4463045, United States Patent (USP) on July 31st, No. 4342314 1 and be issued on April 9th, 1991 in No. 5006394, the United States Patent (USP) of Baird at the United States Patent (USP) that is issued to people such as Radel on No. 4324246, the United States Patent (USP), the August 3 nineteen eighty-two that are issued to people such as Mullane on No. 3929135, United States Patent (USP), April 13 nineteen eighty-two that December in 1975 was issued to Thompson on the 30th and all described some suitable formed films.Described each piece patent documentation is list of references of the present invention.As the preferred top flat of secondary hygroscopic piece of the present invention be a kind of in described one or more patents disclosed formed film, the trade mark of this formed film in sanitary towel is by The Procter﹠amp; Gamble Company of Cincinnati, the Ohio conduct.DRI-WEAVE " registration.

Hygroscopic element 56 can be any moisture absorption tablet that is usually used in sanitary towel, the disposable diaper etc.It also can be described any tablet that is used for the absorbent article core 34 of main hygroscopic piece 30.

As a kind of practical situation, most of body fluid is absorbed by the absorbent article core of main hygroscopic piece and remains in this absorbent article core.A major function of secondary hygroscopic piece 50 is that protection wearer's medicated underpants is avoided spilling from main hygroscopic piece or effusive absorbed fluidic dirty from main hygroscopic piece side direction owing to do not note.Because the function of the hygroscopic element 56 of secondary hygroscopic piece 50 is different with absorbent article core 34, so that absorbent portion 56 can and can be compared to absorbent article core 34 most is slightly thinner smaller with volume.

Since different to the requirement of hygroscopic part 56 with absorbent article core, so it can be made of different materials.For example can form described hygroscopic part with the single or multiple lift tissue paper that is usually used in napkin or the toilet paper.Described hygroscopic part preferably processes to about 5 layers of tissue paper by about 1.

Preferably the total absorptivity of hygroscopic part 56 is slightly less than the absorbability of absorbent article core 34.Owing to plan to make absorbent article core 34 preferably can absorb major part between the operating period or roughly be whole body fluid, so even its absorbability not obvious greater than but also must be slightly larger than the wettability power of hygroscopic element 56.

Have found that, employing be issued on January 31st, 1967 that technology described in No. 3301746, the United States Patent (USP) of Sanford and Sisson makes by quantitatively for every square metre of about 24 grams to 48 grams, apparent density is that every cubic centimetre of about 0.10 gram is quite satisfactory as hygroscopic element 56 to one or more layers tissue paper that constitutes of about 0.12 gram, described patent documentation is reference of the present invention.For having additional strength, the tissue paper that is used in hygroscopic element can and preferably adopt wet-strength resins and latex adhesive.

Be issued to the tissue paper that the technology described in people's such as Morgan No. 3994771, the United States Patent (USP) makes by on November 30th, 1976 and also have lot of advantages as hygroscopic part 56, this patent documentation also is a list of references of the present invention.

In addition, secondary hygroscopic piece also can not contain hygroscopic element.Though, make dirty from the effusive small volume of fluid of main hygroscopic piece side direction by the small volume of fluid that spills from main hygroscopic piece or owing to do not note so 50 need of secondary hygroscopic piece prevent wearer's underwear because non-whole body fluid but best most of body fluid can be absorbed by the absorbent article core of main hygroscopic piece and remain in wherein.So, because the Fluid Volume of the expection that may contact with secondary hygroscopic piece is less, thus not necessarily need a hygroscopic element to retain those fluids in the secondary hygroscopic piece, thus prevent fluid wearer's the underwear of making dirty.

Egative film 54 is impenetrable liquid (as menstruation and/or a urine), though the liquid-tight flexible material of available other flexibility is made, it is preferably made by thin plastic." flexibility " speech is meant the tablet that submissive and very easy and general shape and buman body type are consistent herein.In use, egative film 54 is between hygroscopic element 56 and the wearer's underwear.The effect of egative film 54 is to prevent to spill or owing to do not note contacting with wearer's underwear with the Excreta that is absorbed by hygroscopic element 56 and retain and the wearer's that makes dirty underwear from the effusive Excreta of main hygroscopic piece side direction from main hygroscopic piece.Egative film 54 can be a kind of weaving or nonwoven web, as the thin polymer film of polyethylene or polypropylene thermal plastic film or as with the compound tablet of the nonwoven web of thin film cladding.Egative film is the polyethylene film of thickness from about 0.012mm (0.5mil) to about 0.015mm (2.0mil) preferably.For example by the Clopay Corporation of Cincinnati of Ohio, the city of Cincinnati, the polyethylene film of the commodity that Ohio produces P18-0401 by name and by the EthylCorporation of the state of Indiana, Visqueen Division, of Terre Haute, the polyethylene film of the commodity that Indiana produces XP-39385 by name.Preferably egative film is carried out embossing and/or delustring processing, so that make egative film seem more to resemble cloth from appearance.In addition, egative film can make steam overflow from absorbent portion 56 (promptly ventilative), can prevent that again Excreta from seeing through egative film simultaneously.

Be preferably in configuration support member or connector on the secondary hygroscopic piece 50, as binding agent connector 58.This binding agent connector 58 has a member that is used for combined sanitary towel 20 is fixed on the crotch district part of wearer's underwear or medicated underpants.Therefore, with adhesive applicating at the outer surface of egative film 54 or on part or all of the surface 55 of underwear.In a preferred embodiment, to small part binding agent 58 be near the egative film 54 of the vertical side of the edge 21 of secondary hygroscopic piece on the surface 55 of underwear.Any binding agent or the sicker that are used for this type of purpose in the prior art all can be used as binding agent as used herein, but contact adhesive preferably.Suitable bonding is the CenturyAdhesives Corporation of Columbus by Ohio, Columbus city, the Century A-305-IV that Ohio produces and by national starch and chemical company (the National Starch and Chemical Company ofBridgewater, NJ) the Instant Lock 34-2823 of Sheng Chaning of New Jersey.In No. 4917697, United States Patent (USP), the suitable bonding fixture has been described also.For prevent that binding agent is dry or prevent from before use to adhere on the surface outside the crotch area, cover on the described contact adhesive with the tearable release liner 59 of one deck usually.In described United States Patent (USP) 4917697, suitable release liner has been described also.Any commercially available release liner commonly used that is used for this purpose all can be used for herein.The non-limiting example of suitable release liner is the Akrosil Corporation of Menasha by the state of Wisconsin, two kinds of BL 30 MG-A Silox E1/0 that WI produces and BL 30 MG-A Silox 4P/0.The release liner 50 of tearing earlier when using combined sanitary towel 20 of the present invention is put into medicated underpants with sanitary towel then, and binding agent 58 is contacted with medicated underpants.Between the operating period, binding agent 58 keeps sanitary towel to be positioned in the medicated underpants.

Secondary hygroscopic piece of the present invention is preferably thin and soft.The thickness of secondary hygroscopic piece can be about 1.9mm.The thickness of secondary hygroscopic piece or the thickness of secondary hygroscopic piece zones of different can be by following test determinations.

Need a comparator, specifically from the B.C.Ames Company ofWaltham of Massachusetts, the Ames that has dial indicator Model 482 that Massachusetts has bought, Model 130.This comparator should have a circular comparator base plate, and this base plate is made of aluminum, and weight is 5.16cm for the 10.0g contact surface ²To comparator zeroing, the rustless steel weight of a 80.0g is placed on the measuring stick that extends along comparator micrometer top.The comparator base plate is raise, tear any underwear binding agent separate paper that has on the secondary hygroscopic piece off, granular starch is sprinkling upon on the bonding agent, with being placed down on the substrate of secondary hygroscopic piece towards the surface of underwear court.Secondary hygroscopic piece is placed on the substrate, so that when the comparator base plate reduced, secondary hygroscopic piece was in the zone of secondary hygroscopic piece to be measured.Make secondary hygroscopic piece smooth as far as possible, or prevent secondary hygroscopic piece fold.Lentamente the comparator base plate is reduced on the secondary hygroscopic piece.Contact the back with secondary hygroscopic piece at the comparator base plate and just can measure the thickness of secondary hygroscopic piece by reading reading on the comparator micrometer 30 seconds.

The recommendation thickness of secondary hygroscopic piece is less than about 3.0mm, and preferred thickness is less than about 2.6mm, and the thickness of comparative optimization is less than 2.2mm, and most preferred thickness is less than 2.0mm.

Main hygroscopic piece of the present invention preferably quite can be fitted.Main hygroscopic piece can be reached during use be easy to the degree that quite can snugly match with the labia ditch.Have found that width and/or diameter are about 3/8 inch main hygroscopic piece and can cooperate with part labia ditch at least.When the width of the top main hygroscopic piece of having described or diameter during greater than 3/8 inch, if described size is most suitable, main hygroscopic piece still can be adaptive with the labia ditch.Certainly there is no need to make whole main hygroscopic pieces all adaptive, but preferably make the part of main hygroscopic piece can be adaptive with the labia ditch with the labia ditch.Can determine the Adapter Property in each district of main hygroscopic piece or main hygroscopic piece by means of following test.

Adopt a cupping machine that computerizeds control, specifically preferably adopting can be from Ohioan the EME, Inc.of Newbury, and the EME that Ohio buys, Model 599A, other cupping machine also can adopt certainly.The diameter that this cupping machine has a pair of aluminum is the circular contact surface of 4.0cm.A lateral edges that is placed on down main hygroscopic piece on the contact surface and makes it down, and opposed side edge is upwards towards last contact surface.With this instrument zeroing.Contact surface is till distance between two opposite contact surfaces is 3/8 inch in the reduction.Adaptive power (conformity) reading when reading out in 3/8 inch, thus determine to be applied to power on the main hygroscopic piece.

The adaptive power of main hygroscopic piece in the time of 3/8 inch is less than about 1.0 pounds/inch ², preferred main hygroscopic piece is less than about 0.5 pound/inch 3/8 inch adaptive power ², comparative optimization be less than about 0.25 pound/inch ², most preferably less than about 0.1 pound/inch ²

As Figure 1-3, secondary hygroscopic piece is generally rectangle.Other suitable shape includes, but is not limited to ellipse, timing hourglass shape, splayed, asymmetry etc.

As shown in Figure 4, secondary hygroscopic piece 50 can randomly have two flaps 58, each flap near and extend laterally from the lateral edges of absorbent article core.The shape of flap 58 should be able to encase the edge of the short crotch area of wearer, so that described flap is between wearer's medicated underpants and wearer's two thighs.Flap has two effects at least.The first, flap helps to prevent the dirty wearer's of menstruation health and medicated underpants, preferably finishes described function by means of form the double-walled barrier along the medicated underpants edge.The second, what be preferably in flap disposes connector on the surface of underwear, make flap can be folded inverted below medicated underpants and be fixed on medicated underpants towards the underwear side.In this way, flap can keep sanitary towel suitably to be positioned in the medicated underpants.

In a preferred embodiment, flap is made up of top flat, hygroscopic piece and egative film.In addition, flap and secondary hygroscopic piece lamination one preferably.In other words, top flat, absorbent portion and egative film simply side direction extend outwardly and just can form flap.Certainly flap needn't be integral with secondary hygroscopic piece, and also can be the separating component that is fixed on the secondary hygroscopic piece.In addition, flap can be made up of single substrate or other lamination.Once the someone advised that flap had a liquid-tight bottom, in case fluid stopping is to make dirty the edge of wearer's medicated underpants of the Excreta at flap place.

In addition, flap preferably has a hygroscopic piece, and this hygroscopic piece stretches out the edge of wearer's medicated underpants at least at a place.Theoretically, have only a small amount of menstruation to flow to the flap place, so only need more a spot of hygroscopic material in the flap.But for any Excreta that prevents to flow to flap may flow through and further flows to unprotected zone, some moisture absorption tablets are adopted in suggestion at least.Described moisture absorption tablet can be the extension of thin paper or hygroscopic part 56.Certainly, the moisture absorption tablet in the flap should have higher softness.

The United States Patent (USP) that is issued to Van Tilburg on August 18th, 1987 was issued to the United States Patent (USP) 4589876 of Van Tilburg and was issued on August 26th, 1986 and all described suitable in the United States Patent (USP) 4608047 of Mattingly or be suitable for sanitary towel with some band flaps of the secondary hygroscopic piece 50 combination usefulness of combined sanitary towel 20 of the present invention on May 20 in 4687478,1986.Described each piece patent is all as reference of the present invention.

Secondary hygroscopic piece can comprise randomly that some can encase the parts of wearer's medicated underpants both sides naturally.On July 22nd, 1993, the name with people's such as Lavash name application was called: the serial number of " having the absorbent device that nature encases the medicated underpants coating member of medicated underpants both sides " (" Absorbent Article Having Panty CoveringComponents that Naturally Wrap the Sides of Panties ") is 08/096121 U.S. Patent application (P﹠amp; G file number 4961) and on July 20th, 1994 be (P﹠amp with the serial number that the name of people's such as Weinberger name application is called " absorbent device that contains the underwear covering of zones of extensibility " (" AbsorbentArticles Having Undergarment Covering Components with Zones ofExtensibility "); The G file number is 5354) U.S. Patent application the sanitary towel with the parts that can encase wearer's medicated underpants both sides naturally of the secondary hygroscopic piece combination usefulness that is suitable for combined sanitary towel 20 of the present invention is all disclosed.The content of described public publication is reference of the present invention.

The parts separately of main hygroscopic piece 30 and secondary hygroscopic piece 50 can extending when wearing this combined sanitary towel by some (preferably extensible), tensile parts constitute especially in the vertical.This combined sanitary towel preferably longitudinally extending its when not stretching length about 15% and about 40% between.When being fixed to described combined sanitary towel on wearer's underwear, the suitability when such elongation performance can provide comparatively ideal use, making the people feel comfortable and can reduce dirty.

Secondary hygroscopic piece preferably also can be made up of at the parts of lateral elongation when wearing this combined sanitary towel some.This combined sanitary towel preferably along side direction extending its when not stretching length about 15% and about 40% between.

The top flat of main hygroscopic piece and secondary hygroscopic piece also a kind of as on August 25th, 1992 is 07/936195 disclosed elastic, the three-dimensional saturating liquid polymer wadding net of U.S. Patent application with the serial number of Curro name application, and described document is reference of the present invention.

The concrete extending egative film of recommending is a kind of Findley AdhesivesCompany of Wauwatosa by the state of Wisconsin, the tensile adhesive films of known Formula#198-388 that Wisconsin produces.

On July 23rd, 1992, the serial number with people's such as Osbom name application was that two parts of U.S. Patent applications (the PCT publication number is WO93/01785 and 93/01786) of 07/915133 and 07/915284 have all been described the sanitary towel with extensible portion, two parts of patent applications open day be on February 4th, 1993.The content of described public publication is reference of the present invention.

Referring to Fig. 1, secondary hygroscopic piece 50 preferably has a length 60 and a width 61.The preferred length of this pair hygroscopic piece is about 20cm to 40cm, and more preferably from about 25cm to 35cm, most preferred is that about 30cm is long.

Though main hygroscopic piece cross section under not stressed state can be arbitrary shape, preferably cross section is a rectangle.The preferred width of secondary hygroscopic piece is from about 5cm to 15cm, and is more preferably wide, most preferably wide from about 5cm to 8cm from about 5cm to about 10cm.As the cross section shown in Fig. 2 and 3, the thickness of secondary hygroscopic piece 50 is slightly less than its width usually.

Because the function that main hygroscopic piece is finished is different with secondary hygroscopic piece, each other also can be different so constitute the character of the material of main hygroscopic piece and secondary hygroscopic piece with characteristics.A major function of main hygroscopic piece is absorption and retains body fluid.In addition, the size and dimension of main hygroscopic piece preferably can cooperate with labia.In view of the above, the size of the width of main hygroscopic piece and/or diameter should be able to make it be in the labia at least in part.That is, during use preferably the part of main hygroscopic piece cooperate with labia.Owing to comprise that the female external genital organs of labia is considered to supple body tissue, comprise that importantly the tablet of main hygroscopic piece and main hygroscopic piece should be comfortable and softness, make them non-stimulated and/or do not have a uncomfortable sense to user.By contrast, secondary hygroscopic piece major function be prevent from main hygroscopic piece effusive or since do not notice that side direction flows out main hygroscopic piece be absorbed fluid wearer's the underwear of making dirty.Because the function that secondary hygroscopic piece is finished is different with main hygroscopic piece, so the size of secondary hygroscopic piece can be slightly different with main hygroscopic piece with characteristics.

The width of secondary hygroscopic piece preferably is at least 1.5 times of main hygroscopic piece width.The width that is more preferably secondary hygroscopic piece is the twice of described main hygroscopic piece width.The width of best secondary hygroscopic piece is about 3 to about 8 times of main hygroscopic piece width.

When the length of secondary hygroscopic piece is in stress not in combined sanitary towel preferably with the same length of main hygroscopic piece.But also can make secondary hygroscopic piece slightly be longer than main hygroscopic piece, so that better effects if.

Referring now to Fig. 1,, main as can be seen hygroscopic piece 30 and secondary hygroscopic piece 50 total same length 65.Described public length is meant main hygroscopic piece and the total length of secondary hygroscopic piece.

In order to constitute combined sanitary towel of the present invention, main hygroscopic piece and secondary hygroscopic piece are linked together by the connector of in Fig. 2 and 3, representing usually with label 70.

The accurate characteristic of described connector is unimportant, is unlikely that as long as selected connector has the disconnected intensity of enough tensions when being used for that main hygroscopic piece and secondary hygroscopic piece connected into combined sanitary towel of the present invention main hygroscopic piece and secondary hygroscopic piece are thrown off.As the connectors such as bonding agent connector with known hot melting and pressure adhesive can make us quite satisfied.If the character of the ingredient of selected this combined SANITARY NAPKIN CONSTRUCTION of formation allows, then can adopt the combination of heat welded, ultra-sonic welded or heating and ultra-sonic welded.

Can main hygroscopic piece be fixed on the described secondary hygroscopic piece by means of connector and in 75% the mode of not set the longest between adjacent fixation point distance less than described public length.Also can main hygroscopic piece be fixed on the described secondary hygroscopic piece by means of connector and in 50% the mode of not set the longest between adjacent fixation point distance less than described public length.Also can select less than 25% mode of described public length main hygroscopic piece to be fixed on the described secondary hygroscopic piece by connector and with the longest distance that do not connect between the adjacent fixation point.Also can select by main hygroscopic piece being fixed on the secondary hygroscopic piece along the connector that is roughly whole public length extension.

Referring to Fig. 5, it shows another preferred embodiment of combined sanitary towel 20 of the present invention.The length 40 that main hygroscopic piece 30 has slightly is shorter than the length 60 of secondary hygroscopic piece.In view of the above, public length 65 is corresponding with the length 40 of main hygroscopic piece 30.

Referring to Fig. 3, top flat 32 encases the absorbent article core 34 of main hygroscopic piece 30 fully fully as can be seen.In this embodiment, the top flat 32 of main hygroscopic piece 30 separates with the top flat 52 of secondary hygroscopic piece 50, and both differences.

Can choose the top flat of main hygroscopic piece 30 and secondary hygroscopic piece 50 and make top flat 100 just as shown in Figure 6 by single a kind of tablet wadding net.In this embodiment, top flat 100 is not only with the top flat of the hygroscopic piece 30 of deciding but also as the top flat of secondary hygroscopic piece 50.In the embodiment of Fig. 6, top flat 100 is also as the connector 70 that main hygroscopic piece and secondary hygroscopic piece are linked together.Described combined sanitary towel also can comprise the additional connector that connects main hygroscopic piece and secondary hygroscopic piece.Suitable additional connector includes, but is not limited to bonding agent and melt bonded.Main hygroscopic piece 30 has a width 41.Combined sanitary towel has a connection piece width 541, and this width is the distance of crossing connector 70.Connector width 541 is less than the width of main hygroscopic piece 30.Preferred connector width 541 is less than 75% of the width of main hygroscopic piece 30.Be more preferably, connector width 541 is less than 50% of the width of hygroscopic piece 30.Preferably connector width 541 is less than 25% of the width of main hygroscopic piece 30.

As seen from Figure 6, absorbent article core 34 is between the top flat 100 and elastic component 45 of main hygroscopic piece 30.Elastic component 45 is roughly U-shaped cross-section, causes main hygroscopic piece 30 also to have common U-shaped cross-section.

The elasticity of elastic component 45 is not preferably absorbed and is remained in the influence of the interior Excreta existence of body in the absorbent article core.The continuous elastic of elastic component 45 can make main hygroscopic piece 30 keep closely contacting with wearer's health between the operating period.

Referring to Fig. 6 A, the shape of cross section of elastic component 45 and main hygroscopic piece 30 is typical circular or ellipse.

Main hygroscopic piece preferably has " the stable state resistance " that can improve performance effectively.Herein, " stable state resistance " refers to master's hygroscopic piece is presented when the main hygroscopic piece in the center is applied power the lateral margin that makes main hygroscopic piece and is not stretched over resistance outside the second hygroscopic piece lateral edges.In other words, the stable state resistance has been described the relative motion of main hygroscopic piece with respect to secondary hygroscopic piece.Preferably, even under the effect of bigger power, the lateral edges of main hygroscopic piece does not reach outside the secondary hygroscopic piece lateral edges yet.By means of still remaining within the secondary hygroscopic piece lateral edges, fluid is obviously reduced from main hygroscopic piece effluent or the probability that leaks into (on wearer's skin or underwear) on the surface outside the secondary hygroscopic piece at the lateral edges that makes main hygroscopic piece under the effect of bigger power.

The device that is used to measure the stable state resistance must comprise a scale pan and a resistance element.The suitable scale pan is Sartorius Universal Balance.Described resistance element is that diameter is the cylindrical bar of 1 inch (2.54cm).The length of resistance element is preferably about 6 inches (12.54cm).Resistance element can be made by the suitable material that is able to take active force in the stiction test process.The material that is fit to includes, but is not limited to steel, aluminum, plastics and timber etc.

Stable state resistance test process is as follows: referring to Fig. 7 and 8, resistance element 400 is placed on the scale pan 402.Calibrate the scale pan 402 then and make it to be designated as zero.The combined sanitary towel (as sanitary towel 410) that will have main hygroscopic piece 412 and secondary hygroscopic piece 414 is placed on the assay device, and main hygroscopic piece 412 is on the resistance element 400.The egative film part of secondary hygroscopic piece 414 should be roughly be arranged in parallel with the axis of resistance element 400.Each end at secondary hygroscopic piece 414 applies power (representing with F usually among Fig. 7 and 8).The power that applies is till the lateral edges 420 of main hygroscopic piece equates with the lateral edges 418 of secondary hygroscopic piece to be basically perpendicular to the top flat part of secondary hygroscopic piece 414 as shown in the figure.In case each lateral edges of main hygroscopic piece aligns with the lateral margin of secondary hygroscopic piece, just write down the reading (being accurate to gram) of described power.This reading is promptly represented the stable state resistance of main hygroscopic piece.

Main hygroscopic piece can have the stable state resistance greater than about 600g.Preferred main hygroscopic piece has the stable state resistance more than or equal to 50g, be more preferably more than or equal to 100g, more preferably greater than or equal 150g.

Some concrete infinite combined sanitary towel embodiments have been shown among Fig. 9-17.

Fig. 9 shows the embodiment of the main hygroscopic piece with the folding shape elastic component 45 of a Z word.As can seeing from Fig. 9, absorbent article core 34 preferably is between top flat 32 and the elastic component 45.Absorbent article core 34 is positioned to help between top flat 32 and the elastic component 45 closely contact between absorbent article core 34 and the top flat 32.By bonding or make between top flat and the absorbent article core closely by described elastic component applied pressure that contact can promote fluid to be sent to lower floor's absorbent article core from top flat.

In some embodiments, the elastic component 45 that is provided with an energy absorb body fluids perhaps is ideal.This class material includes, but is not limited to hygroscopic foam material and sponge material.

Referring to Figure 10, this figure is the sectional view that the longitudinal axis along another embodiment of combined sanitary towel 20 of the present invention dissects.Main hygroscopic piece 30 comprises one by 34, one higher density layers 73 of the absorbent article core that constitutes than low-density layer 72, plurality of elastic fiber 74 and be distributed on the high-density layer 73 and the moisture absorption Binder Materials 75 in it.Described moisture absorption Binder Materials 75 mainly is distributed in first and second petiolareas 27,29 of main hygroscopic piece 30.Described than low-density layer 72 a kind of porous plug floss tablet of heat bonding preferably.Described elastic fiber is the polyester capillary channel fiber preferably.

Referring to Figure 11, the figure shows the cross-sectional view of the another embodiment of combined sanitary towel 20 of the present invention.Absorbent article core 34 is combing nonwoven fabric layers of a kind of capillary channel fiber.Described nonwoven layers is rolled layer by layer and form multilamellar.Covering part 77 preferably places in the nonwoven fabric layer of capillary channel fiber.Suitable coverage part is a kind of fluid impermeable membrane.Another kind of suitable coverage part is a kind of formed film.Also can in the nonwoven fabric layer of capillary channel fiber, add hygroscopic material, for example add sucting wet gel material.

Though the capillary channel fiber nonwoven fabric layer shown in Fig. 1 has the typical circular cross section, the capillary channel fiber layer can be made different shape, for example rectangle, triangle, ellipse, U-shaped, Z word fold shape etc.

Referring to Figure 12, there is shown another embodiment of combined sanitary towel 120.Combined sanitary towel 120 comprises a main hygroscopic piece 130 and a secondary hygroscopic piece 150.Main hygroscopic piece 130 comprises 140, one distribution member 145 of 132, one collecting means of a porous formed film top flat, 150, one first elastic components 155 of moisture absorption sandwich layer and second elastic component 157.First elastic component 155 roughly extends through the length of main hygroscopic piece 130.First elastic component 155 preferably is issued to polymer capillary channel fiber described in people's such as Thompson No. 5200248 patents on April 6th, 1993.Second elastic component 157 preferably is configured to be roughly the nylon monofilament of annular cross section, and this ring section interfixes in the inner surface part near collecting means 140 and close absorbent article core 150.As can be from seeing Figure 12, second elastic component 157 roughly be placed on the core of main hygroscopic piece 130.

Main hygroscopic piece 30 can comprise one and U.S. Patent application serial number 08/225441 (P﹠amp; G reel number 5109R) the similar elastic component 45 of disclosed inner drip molding in, described patent application be on April 8th, 1994 with the name application of CarlL Bergman, its name is called: " sanitary towel with inner drip molding " (" Sanitary Napkin having an Intemal Shaping Component "), this applies for that disclosed content is reference of the present invention.

Figure 13 shows the another preferred embodiment of combined sanitary towel 200.This combined sanitary towel 200 comprises a main hygroscopic piece 210 and a secondary hygroscopic piece 220.Main hygroscopic piece 210 preferably includes a top flat 212, an absorbent article core 214 and an elastic component 216.As seen in Figure 13, elastic component 216 has the cross section that is roughly inverted V-shaped, and therefore, main hygroscopic piece 210 equally also has the cross section that is roughly inverted V-shaped.Elastic component 216 preferably roughly extends along the whole length of main hygroscopic piece 210.

Referring to Figure 14, the figure shows a preferred embodiment again of combined sanitary towel 240 of the present invention.Combined sanitary towel 240 preferably includes a main hygroscopic piece 245 and a secondary hygroscopic piece 250.As shown in figure 14, combined sanitary towel 240 preferably has 255 and bending sections 257 up of section of an approximate horizontal.Horizontal segment 255 is present in first end section 27 and the core 28.Bending section 257 up is present in the second end section 29.Bending section 257 preferably includes a tensioning member that the pulling force that is enough to make second section 257 bending can be provided up.Suitable tensioning member includes, but is not limited to a tensile top flat, elastic web, many tree laces, thin film or any can provide the suitable components of ideal pulling force.Also can be chosen to the section that is present in the first end 27 crooked up.

As shown in figure 14, main hygroscopic piece 245 and secondary hygroscopic piece 250 link together by their whole common length.That is to say, they are linked together by section 255 and 257.Also can they be linked together in first section 255, and in back segment 257, be separated from each other as shown in Figure 15.In this embodiment, under the condition that does not stress, secondary hygroscopic piece 250 roughly remains in the same plane of being roughly of the section of spreading all over 255 and 257.It is crooked up and separate with secondary hygroscopic piece 250 to be in main hygroscopic piece 245 itself in second section 257.Section 257 is general corresponding with the second end 29.Main hygroscopic piece also can be crooked up in first end 27.

Referring to Figure 16 and 17, there is shown the another embodiment of combined sanitary towel 320 of the present invention.This combined sanitary towel 320 comprises a sectional main hygroscopic piece 330 and a secondary hygroscopic piece 340.Main hygroscopic piece comprises hygroscopic part 331,332 and 333 separately.Shown in Figure 16 and 17, section 331 whole first petiolareas 27 that are positioned at, section 332 whole being in the center 28, section 333 whole second petiolareas 39 that are positioned at.Main hygroscopic piece can randomly comprise two parts that extend to center 28 from two petiolareas 27 and 29.Main hygroscopic piece also can randomly be made up of four parts that separate or more separate parts.Though the multipart main hygroscopic piece shown in Figure 16 and 17 extends through the length of whole combined sanitary towel, some sections or some districts with combined sanitary towel of dereliction hygroscopic piece are fit to needs.For example, first petiolarea 27 and center 28 can comprise a main moisture absorption ingredient, and second petiolarea 29 includes only secondary hygroscopic piece.In addition, the main hygroscopic piece in each district can be designed to finish some specific functions, therefore, the main hygroscopic piece in each district can be made by finishing desirable materials with function.For example, owing to section 332 is placed on directly retains the body fluid part probably, the wettability power of the material that the main moisture absorption section 332 in center 28 is comprised should be than section 331 or section the last 333, and parts or section 331 or 333 also may retain body fluid, so a little less than the wettability power of their wettability power than the section 332 in the center 28.

It is desirable to provide a kind of combined sanitary towel that on the whole length of main hygroscopic piece width or thickness change that has.For example, the relative petiolarea in the center of main hygroscopic piece comparable two is thick.The center that also can select main hygroscopic piece is thinner than two relative petiolareas.

Though specific embodiments more of the present invention have been made detailed description,, obviously, the ordinary skill of this area also can be made various changes and modification under the prerequisite that does not exceed design of the present invention and scope.Therefore, change within the present invention's design all dropped in claims scope required for protection of the application with modification.

Claims (13)

1. one kind comprises a combined sanitary towel with main hygroscopic piece and the secondary hygroscopic piece with certain length and width of certain length and width, described main hygroscopic piece and secondary hygroscopic piece have public length, described main hygroscopic piece comprises an absorbent article core and a saturating liquid top flat that overlays on the described absorbent article core, described secondary hygroscopic piece comprises a saturating liquid top flat and a liquid-tight egative film that links to each other with saturating liquid top flat, described main hygroscopic piece is fixed on the described secondary hygroscopic piece by connector, and this combined sanitary towel is characterised in that the width of described secondary hygroscopic piece is at least 1.5 times of main hygroscopic piece width.

2. one kind comprises a combined sanitary towel with main hygroscopic piece and the secondary hygroscopic piece with a certain length and width of a certain length and width, described main hygroscopic piece and secondary hygroscopic piece have public length, described main hygroscopic piece comprises an absorbent article core and a saturating liquid top flat that overlays on the described absorbent article core, described secondary hygroscopic piece comprises a saturating liquid top flat and a liquid-tight egative film that links to each other with this saturating liquid top flat, described combined sanitary towel is characterised in that by connecting elements described main hygroscopic piece is fixed on the described secondary hygroscopic piece, makes the distance of the longest not set between the two adjacent fixation points less than 75% of described public length.

3. one kind comprises that has certain length, width, the main hygroscopic piece of peripheral and inherent not stressed shape and a secondary hygroscopic piece with certain length and width, described main hygroscopic piece and secondary hygroscopic piece have public length, described main hygroscopic piece comprises an absorbent article core and a saturating liquid top flat that overlays on the described absorbent article core, described secondary hygroscopic piece comprises a saturating liquid top flat and a liquid-tight egative film that links to each other with this saturating liquid top flat, described main hygroscopic piece is fixed on the described secondary hygroscopic piece by connector, this combined sanitary towel is characterised in that the time spent of doing that is subjected to being applied near the compression stress of its periphery when described main hygroscopic piece, described main hygroscopic piece can be compressed and have enough elasticity, described main hygroscopic piece makes in case when cancelling described compression stress, can roughly return to original not stressed shape.

4. one kind comprises a combined sanitary towel with main hygroscopic piece and the secondary hygroscopic piece with a certain length and width of certain length and width, described main hygroscopic piece and secondary hygroscopic piece have public length, described main hygroscopic piece comprises an absorbent article core and a saturating liquid top flat that overlays on the described absorbent article core, described secondary hygroscopic piece comprises a saturating liquid top flat, a liquid-tight egative film that links to each other with described liquid top flat and a hygroscopic piece that places between described top flat and the egative film, described main hygroscopic piece is fixed on the described secondary hygroscopic piece by connecting elements, and described combined sanitary towel is characterised in that stiction that described main hygroscopic piece has is more than or equal to about 50g.

5. as the described combined sanitary towel of above-mentioned each claim, wherein, the width of described secondary hygroscopic piece is 2 times of described main hygroscopic piece width at least.

6. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece is fixed on the described secondary hygroscopic piece, makes the distance of the longest not set between the two adjacent fixation points less than 50% of described public length by connecting elements.

7. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece is fixed on the described secondary hygroscopic piece by the connecting elements that roughly extends continuously along described public length.

8. as the described combined sanitary towel of above-mentioned each claim, wherein, described secondary hygroscopic piece comprises a hygroscopic piece between described top flat and described egative film.

9. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece comprises a liquid barrier layer.

10. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece comprises at least one elastic component.

11. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece comprises two sections or multistage.

12. as the described combined sanitary towel of above-mentioned each claim, wherein, this combined sanitary towel comprises one first petiolarea, a center and one second petiolarea, and the described main hygroscopic piece that is positioned at described first petiolarea comprises a crooked part up.

13. as the described combined sanitary towel of above-mentioned each claim, wherein, described main hygroscopic piece has less than 1.0 pounds/inch at 3/8 inch place ²Adaptive power.

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