CN1384730A

CN1384730A - Absorbent article having vertically orientated flow regulating walls and method for forming

Info

Publication number: CN1384730A
Application number: CN00814928A
Authority: CN
Inventors: J·迪帕尔马
Original assignee: Kimberly Clark Worldwide Inc
Current assignee: Kimberly Clark Worldwide Inc; Kimberly Clark Corp
Priority date: 1999-09-15
Filing date: 2000-08-28
Publication date: 2002-12-11
Also published as: GB2370783A; GB0208051D0; AR025640A1; AU8035300A; WO2001019311A1; DE10084988T1; KR20020027651A; GB2370783B; BR0013938A; MXPA02001870A

Abstract

Absorbent pad assemblies and articles are provided which include at least a first generally planar fluid conveyance barrier member of preselected permeability interposed between first and second vertically orientated absorbent members. Also provided is a method for forming an absorbent structure wherein a fluid conveyance barrier member of preselected permeability is adjacently disposed between first and second absorbent members with the barrier member and the first and second absorbent members orientated such that as to have a specifically desired ratio of horizontal width to vertical height.

Description

Absorbent article and manufacturing process thereof with vertically orientated flow regulating walls

Technical field

The present invention relates generally to the absorbent article that is used for absorb body fluids and body exudates.Particularly, the present invention relates to have the absorption pad assembly and relevant absorbent article and manufacturing process thereof of improved fluid flow control or processing.

Background technology

In the art, be used for or as absorbent article particularly a large amount of various types of structures of disposable absorbent article be known, this absorbent article is used for collecting different body fluid and effluent.Commercially available absorbent article comprises diaper, adult incontinence products, sanitary towel and binder.Such disposable products generally include be used to accept, the parts of absorption and trap fluid.Typically, the parts of this goods comprise liquid top flat, absorbent cores and liquid-tight tergite thoroughly.

The parts of typical absorbent articles are layering or be arranged to main plane surface facing fluid suction area, for example wearer's a health in a horizontal manner generally.In this absorbent article, when fluid crossed one or more layers, character or structure that fluid runs through transmission can and change usually.Like this, this absorbent article may present undesirable horizontal dependency between parts.And the fiber that constitutes absorbent cores usually is random orientation usually, and fiber is the horizontal adjacent layout of one-tenth in pad, and therefore, fluidic suction is typically with radial manner or pattern wicking.

One of them main purpose of absorbent article exploitation is to increase, improve or the maximum absorbability of utilizing goods.Usually, the product of the above-mentioned type typically makes the circular pattern distribution of the liquid that is deposited on the top flat.Because this structure has length greater than its width usually, may undesirably cause like this fluid for example effluent at the petiolarea of absorbent article according to the vertical side of the edge that arrives absorbent article before desirably utilizing absorbability.Although be appreciated that to have the absorbability that does not have to utilize or do not make full use of the petiolarea of absorbent article, the generation of above-mentioned situation may increase undesirably from the probability of the side leakage of goods.

And this absorbent article can and can scalable ground condition and application, for example intrinsic the or relevant factor of using with goods of environment.Like this, may need the fluid that is absorbed for example to comprise in character or parameter may change aspect flow velocity and form, stage or the composition.For example, effluent can be heterogeneous and heterogeneous, and for example under the situation of menstruation, it for example can comprise erythrocyte, mucoitin, blood plasma and organize remains.

Sanitary towel's (being also referred to as menopad), feminine sanitary napkin, ight protective pad, panty-liners and underwear guard design become by women dress, so as before to be absorbed in menstruation, menstruation and other body fluid of discharging after intermenstrual period and the menstruation.Sanitary towel is the external device, and it is designed to approaching with the pudendum zone of human body and aims at, thereby and usually by or mechanical connection fix in position bonding with underwear.Sanitary towel is typically some also different with the underwear guard shield with panty-liners aspect significant.Compare with the underwear guard shield with panty-liners, sanitary towel's general size is bigger, and has the three-dimensional structure that more limits, and thickness is thicker, also has bigger fluid displacement.

Consider that people expect that absorbent article increases wearer comfort and reduces the profile that this absorbent article exists as far as possible, therefore current needs and require the absorbent article of littler or small and exquisite volume.Like this, there be a kind of needs and requirement that improves absorption pad assembly and absorbent article, this for example can cause utilizing more completely its absorbability, and for example can respond possible operation and service condition more widely more effective and efficiently, this assembly and goods are under this operation and the service condition.Particularly, current needs and require a kind of absorption pad assembly and absorbent article that has improved the control or the processing of the fluid flow that interrelates with it.

Summary of the invention

A main purpose of the present invention provides a kind of improved absorption pad assembly and absorbent article.Another main purpose of the present invention provides a kind of method that makes arbitrary or the two shaping in for example a kind of improved absorption pad assembly of absorbing structure and the absorbent article.

Of the present invention one more specifically purpose be to solve one or more the problems referred to above.

A main purpose of the present invention can realize by a kind of specific absorption pad assembly, realizes to small part.According to a preferred embodiment, the absorption pad assembly comprises that at least one has selected the infiltrative first common planar FLUID TRANSPORTATION block piece in advance, and this first common planar FLUID TRANSPORTATION block piece is interposed between the first and second vertical orientated absorbing components.

Prior art can not provide indiscriminately ad. as one wishes complete usually or make full use of the absorption pad assembly and the absorbent article of its absorbability.Prior art can't provide the absorption pad assembly and the absorbent article that can respond possibly operation more widely and service condition usually, this assembly and goods be under this operation and the service condition also indiscriminately ad. as one wishes with a kind of more effective and more efficiently mode operate.

The present invention also comprises a kind of special absorbent article.According to a preferred embodiment of the present invention, this absorbent article has a contact surface and comprises an absorption pad assembly.The absorption pad assembly comprises at least the first and second common planar FLUID TRANSPORTATION block pieces.Each block piece has the permeability of selecting in advance, and is interposed between a pair of absorbing component, and this absorbing component vertically is provided with respect to contact surface usually.

Another aspect of the present invention relates to the specific method that forms this and similar absorbent structures.According to an embodiment, a kind of such method is included in adjacent at least one first common planar FLUID TRANSPORTATION block piece of differential permeability in advance that is provided with between first and second absorbing component at least, and make the block piece of adjacent setting and first and second absorbing component orientation, wherein first and second absorbing component each have the ratio that is no more than about 10: 1 horizontal width and vertical height.

According to another embodiment, provide a kind of method that forms the absorption pad assembly.This method comprises at least one the first common planar FLUID TRANSPORTATION block piece horizontal slice of differential permeability in advance that makes between first and second absorbing component, and makes the block piece of horizontal slice vertical with first and second absorbing component directed again.

According to another embodiment, provide a kind of and be used to improve the method for fluid treatment by absorbent article, this absorbent article comprises a saturating liquid overlay, a liquid-tight tergite, and be arranged in an absorption pad assembly between overlay and the tergite.This method comprise utilize a kind of absorption pad assembly, this absorption pad assembly to comprise to be interposed in a pair of usually with respect to the first common planar FLUID TRANSPORTATION block piece of differential permeability in advance that has between the vertically disposed absorbing component of contact surface.As described in greater detail, a kind of special form of this absorbent article is a sanitary towel.

As used herein, relate to " absorbent article " and be understood that to refer to product for example diaper, sanitary towel, training pants, incontinence clothing, ight protective pad, panty-liners, oxter guard shield etc., they are used for body fluid and the effluent that absorbing bodily is discharged, for example urine, menstruation, blood, perspire and other Excreta.

And relevant with absorbing component here " vertical orientated " is understood that the operated by rotary motion of parts, and is usually directed to the face of body contacting surface or absorbent article itself.Usually, vertical orientated absorbing component is understood that to have the ratio that is no more than about 10: 1 horizontal width and vertical height, is preferably and is no more than about 5: 1, is more preferably about 1: 1 or littler.

Here relevant with adjacent absorbing component " discontinuous " is understood that to refer to that adjacent absorbing component forms or has a surface demarcation face between it.Be appreciated that in fact this surface demarcation face is used for hindering, preventing or avoids fluid to pass through between adjacent absorbing component or from an absorbing component to another adjacent absorbing component.Be appreciated that and will be below detailed description that adjacent absorbing component is preferably on one or more character or the feature different, for example chemical constituent or structure are as different on fibre orientation or the thickness.For the person of ordinary skill of the art, it is evident that under the teachings herein provided, effective character of other of adjacent absorbing component or feature can be different.

Here relevant with adjacent absorbing component between it, form one " surface demarcation face " and be understood that to refer to a surface between adjacent component contact or approaching mutually adjacent component, forming.

Here " contact surface " that relates to is understood that to refer to the fluidic surface that initial contact absorbed of absorbing component, pad assembly, goods or analog.

Concerning the ordinary skill of this area, in conjunction with claims and accompanying drawing and by following detailed description as can be known, other purpose of the present invention and advantage are fairly obvious.

Description of drawings

Fig. 1 is the schematic exploded perspective view of the absorbent article with pad assembly according to a preferred embodiment of the present invention;

Fig. 2 is the perspective cutaway view, of absorbent article shown in Figure 1;

Fig. 3 is the simplification cross sectional side view of the absorbent article shown in Fig. 1 and 2;

Fig. 4-the 6th is according to the simplified schematic partial top view of the absorbent article of an alternative embodiment of the present invention; And

Fig. 7-the 9th, the cross sectional side view of the simplified schematic of the absorbent article that alternate embodiment according to the present invention is looked along the X-X axis.

The specific embodiment

Method as described in detail later, as to the invention provides a kind of improved absorption pad assembly and absorbent article and form this absorption product.

Referring to Fig. 1-3, it illustrates the absorbent article of representing with Reference numeral 30 usually according to one embodiment of present invention earlier, and this absorbent article can absorb body fluids.Absorbent article can be the absorption product of diaper, training pants, sanitary towel, panty-liners, ight protective pad, incontinence clothing, oxter guard shield or other type, and they can absorb one or more body fluid, for example urine, menstruation, blood, perspire, Excreta etc.Be appreciated that the typical character of this absorbent article is disposable.Although this with feminine care for example sanitary towel absorbent article 30 is described, be appreciated that not necessarily so restriction of application of broad of the present invention, and if desired, the present invention can be applicable to or is associated with for example top absorbent article of determining of the absorbent article of other type or form.

Absorbent article 30 is included in usually saturating liquid top flat or the overlay 32 on the body side surface of goods, on goods relative common liquid-tight tergite or barrier layer 34 on garment side, and an absorbent cores 35 that is provided with and is encapsulated between it.

Be appreciated that absorbent article for example feminine care such as sanitary towel may typically comprise feature additional standard or common, for example about goods location or position in use.For example, some sanitary napkin design adopt the flank sheet, are called as " flap " sometimes, for example help to prevent that fluid from flowing out from the side of sanitary towel.Another example of this feature be tergite on the surface in clothes district or comprise or exist binding agent on every side.As known in the art, for example under encapsulation state, the adhesive surface of this goods can be covered by get loose paper or analog before use.Because this feature is standard or commonly used, to those skilled in the art, this is known, does not constitute the part of the invention of broad, no longer it is at length represented or illustrates at this.

Top flat or overlay 32 are usually designed to the Body contact with user, and form the contact surface of absorbent article 30 usually.In fact, top flat 32 can be made by synthetic or natural material, and preferably be penetrated at an easy rate by body fluid by weaving or the non-woven material structure.Suitably material comprises the bonding combing outer lining of polyester, polypropylene, polyethylene, nylon or other heat-bondable fibre.Other polyolefin is polypropylene and poly copolymer for example, linear low density polyethylene, and many fine holes thin film outer lining and Web materials also use well.Top flat 32 also can be made of thermoplastic film, and this thermoplastic film comprises the hole, and has non-woven material in its one or both sides.This embodiment brings than sensation of softness can for ideally the thigh of user, allows body fluid to pass through fast simultaneously.

Tergite or barrier layer 34 be liquid thoroughly usually, and be designed to the inner surface towards adjacent clothes product, for example the crotch portion of underwear (not shown).Tergite 34 preferably can be designed to allow air or steam by and leave absorbent article 30, prevent simultaneously or hinder fluid and pass.Be appreciated that tergite 34 can be made by any suitably material, character or the feature determined above this material can provide or have.For example, suitable material the polymer thin film for example polyethylene or the polypropylene that can comprise micro-embossed.

In general, top flat 34 and tergite 34 can be arranged to center on or surround absorbent cores 35 and uphold altogether contiguously face-to-face.And top flat 32 has peripheral 32a, and tergite 34 has peripheral 34a, and this periphery preferably utilizes binding agent to connect by heat seal ultrasound wave or the known technology of other those of ordinary skills that suitably select or is sealed.

Absorbent cores 35 to small part is formed by absorption pad assembly 36.Shown in Fig. 2 and 3, the absorption pad assembly is the three dimensional structure with horizontal axis X-X, vertical axis Z-Z and length axes Y-Y.Absorption pad assembly 36 comprises correspondingly some vertically orientated

absorbent members

40,42,44,46,48,50,52,54 and 56.

In fact, absorption pad assembly according to the present invention typically comprises at least two, preferably at least three this vertically orientated absorbent members.Be appreciated that, being included in according to the absorbing component in the absorption pad assembly of the present invention of specific quantity or character selected by those of ordinary skill in the art usually, and obtain instruction, so that the requirement or the ideal performance standard of the related application-specific of the assembly of satisfy considering at this.For example, can utilize have identical or different material, structure or absorb feature or the absorbing component of characteristic so that make two or more and even all absorbing components constitute special absorption pad assembly of the present invention.Yet, in general, for the advantage that the absorption pad assembly of realizing following many absorbing components more fully may bring, absorption pad assembly according to the present invention will comprise have different materials, structure or absorb at least two absorbing components of feature or characteristic.

As shown in the figure, one first common planar FLUID TRANSPORTATION block piece or fluid flow are regulated wall 41 and are interposed between absorbing component 40 and 42.Similarly, common planar FLUID TRANSPORTATION block piece or fluid flow are regulated wall 43 and are interposed between absorbing component 42 and 44.And common planar FLUID TRANSPORTATION block piece 45,47,49,51,53 and 55 is interposed between the different adjacent paired absorbing

components

44 and 46,46 and 48,48 and 50,50 and 52,52 and 54 and 54 and 56.Be appreciated that each all vertically is provided with respect to the contact surface of absorbent article 30 block piece usually.

Block piece (below be also sometimes referred to as " flow regulating walls " or " fluid flow adjusting wall ") can adopt different forms, and has the special permeability of selecting in advance.And this block piece can be applied in absorption pad assembly and the absorbent article by special or special structure, to provide or to cause special or special fluid flow to control or handle.

For example, the one or more block pieces that are applied in absorption pad assembly of the present invention and the absorbent article are controlled or are regulated as semi-permeable liquid or liquid-tight material, for specific application or to use this be special needs.As an alternative or additional, the one or more block pieces that are applied in absorption pad assembly of the present invention and the absorbent article can be the fluid flow directional materials.

The block piece that is used for practice of the present invention can or form by the different suitable material manufacture of for example differential permeability in advance known in the field.According to specific purposes, suitable impermeable block piece comprises and for example prevents that fluid from therefrom passing the coating or the thin film of its conveying.For example, this impermeable coating or thin film can be applicable to suitable substrate, so that for example form impermeable block piece.According to specific purposes, another kind of suitable impermeable block piece comprises for example above-mentioned impermeable backsheet material, perhaps absorbent foam materials not, for example closed chamber, crosslinked or cross-linked polyolefin foam not, this foamed materials comprises for example polypropylene or polyethylene foam material.The example of buying on the market that is intended for use foamed materials of the present invention comprises by FairLawn, the trade name that the Sealed Air Corp. of New Jersey makes is the CA-30 foamed materials, with by Glens Falls, the Astro-Valcour of New York, the trade name that Inc. makes is the AF-030 foamed materials.

Semi-permeable block piece can be made by the material that only allows some fluid therefrom to pass conveying.For example, the inclusions of this semi-permeable block piece can be used to filter or screen the fluid that passes its conveying.According to specific purposes, suitable semi-permeable block piece can comprise porous or perforated film, or Web materials, for example at the United States Patent (USP) 4616644 of authorizing people such as Saferstein with authorize in people's such as Jackson the United States Patent (USP) 5643240 and describe, its disclosure provides as a reference at this in full.For example, United States Patent (USP) 4616644 discloses a series of light-weight nonwoven fabrics, this fabric is made by extruding, embossing and directed method by high density polyethylene (HDPE) or polypropylene, and be called Delnet thin film available from Hercules Inc., United States Patent (USP) 5643240 discloses a kind of thin film of suitable perforate of the AET of being called as polyethylene CKX 215 thin film, it is by Middleton, and the Applied Extrusion Technology of Del makes.

The similar check-valves of the effect of orientation or flowing positioning block piece mainly therefrom passes in one direction to allow fluid.For example, a kind ofly for example knownly be used for this purpose as the top in this absorbent article or the perforated film of body side surface.

Like this, the block piece that is used for practice of the present invention can be made by different thin film, foamed materials and analog.And according to some preferred embodiment of the present invention, one or more block pieces can adopt the form of thin film, foamed materials or analog, and in fluid contact back solubilized, for example provide or cause the time relase effect.

Like this, in the absorbent article shown in Fig. 1-3 30, block piece 45,47,49 and 51 is liquid-tight basically, for example prevents or avoids fluid therefrom to pass.Block piece 43 and 53 is semi permeable.That is, semi-permeable block piece 43 allow selected fluid on 44 direction from absorbing component 42 to absorbing component or rightabout flow.Similarly, semi-permeable block piece 53 allow selected fluid on 54 direction from absorbing component 52 to absorbing component or rightabout flow.In addition, block piece 41 and 55 is flowing positionings.That is, block piece 41 allows fluid flowing from the direction of absorbing component 40 to absorbing component 42, but does not allow to flow in the opposite direction.Similarly, block piece 55 allows fluid to flow to absorbing component 54 from absorbing component 56, but does not allow to flow in the opposite direction.In Fig. 3, block piece 41 and 55 flowing positioning characteristic are schematically illustrated by the cone shown in Fig. 3 57.As shown in the figure, each cone 57 is included in the summit of pointing on the mobile direction of guiding 58.In the vicinity of one or more terminal absorbing components of a specific absorption pad assembly or on every side, the edge that uses the directed block piece of fluid flow to help to guarantee better to avoid fluid to spill into pad assembly is outer and/or increase the absorbefacient utilization of existence in the pad assembly.Yet, being appreciated that the many different special tectonic of block piece according to the present invention and absorbing component becomes possibility, the scope of broad of the present invention is not limited to this specific or special structure usually.For example, if desired, the directed block piece of one or more such fluid flow can locate and be orientated, so that guiding fluid points toward edge, rather than the center of corresponding absorption pad assembly.

And, can vertically with adjacent relevant absorbing component uphold altogether according to one or more block pieces of the present invention, this block piece for example is a block piece 41,43,47,49,53 and 55.As an alternative or additional, can vertical non-extension altogether according to one or more block pieces of the present invention with adjacent absorbing component, for example block piece 45 is respectively with respect to adjacent absorbing

component

44 and 46, and block piece 51 is respectively with respect to adjacent absorbing component 50 and 52.Like this, adjacent absorbing

component

44 and 46 forms a surface demarcation face 60 betwixt, and forms a surface demarcation face 62 between the adjacent absorbing component 50 and 52.In a preferred embodiment, it is relative with contact surface shown in overlay 32 that surface demarcation face 60 and 62 is positioned at the side of absorbent article 30 usually, for example contiguous or near tergite 34.Yet, be appreciated that not necessarily so restriction of relative broad range of the present invention.

Surface demarcation face 60 and 62 allows fluid to carry or circulation to another absorbing component from an adjacent absorbing component.Be appreciated that this structure or layout can be used to the convenient absorbability of utilizing a specific absorption pad assembly more completely.For example, according to preferred embodiments more of the present invention, usually only after the absorbability of or another adjacent absorbing component has made full use of, fluid will cross this surface demarcation face and be communicated with.

As shown in the figure, adjacent in addition absorbing component is along its whole vertical height horizontal displacement toward each other.That is, this adjacent in addition absorbing component has same position usually without any part on the X-X axis.For example, which does not have partly be positioned at following on the absorbing component 40 or have the X-X axial location identical with the part of adjacent absorbing component 42.

Each absorbing

component

40,42,44,46,48,50 and 52 is the plane normally, and vertically is provided with respect to the contact surface of absorbent article 30.Each absorbing component has a vertical height (h), a horizontal width (w) and a longitudinal length (l).The specific height, width and the length that are appreciated that the employed absorbing component of common selection are to satisfy the particular requirement that this absorbing component is used.The absorbing component that uses in the present invention practice has width and the about 1mm height of about 15mm extremely to the scope that is no more than about 20mm at about 0.03mm usually.Yet in fact, the absorbing component of Shi Yonging typically has the width that is no more than about 8mm (for example at about 0.5mm to the scope of about 8mm) in the present invention, and is best, has the width that is no more than about 5mm (for example at about 1mm extremely in the scope of about 5mm).

In addition, one or more in the vertical height of a specific absorbing component, horizontal width and the longitudinal length can be identical or different with the correspondingly-sized of other absorbing components of a specific pad assembly or each parts.For example, as shown in Figure 1, the absorbing component that the absorbing component 56 that side is provided with is placed than the center for

example absorbing component

46,48 and 50 length (l) is short.And as shown in Figure 3, absorbing component 42 has bigger width (w) than absorbing component 44.Similarly, have substantially the same vertical height (h) although Fig. 3 has represented each absorbing component, although this use may be convenient to manufacturing and assembling, thereby this is normally preferred, also can use the absorbing component of the vertical height with difference or selection.

According to preferred embodiments more of the present invention, as required, one or more in the vertical height of a specific absorbing component, horizontal width and the longitudinal length can change for whole absorbing component or be constant and even in special-purpose.And in vertical height, horizontal width and longitudinal length in those absorbing components of one or more variations, such variation can be successive or in one or more steps.And if exist, as required, this variation can be uniform or uneven.

According to the present invention, absorbing component advantageously arranges, for example provides usually than in absorbent article general lower the ratio of width to height of the ratio of width to height that obtains or realize in the sanitary towel for example.The wicking of this absorbing component structure promotion on the direction of Y-Y and Z-Z axis with significantly low the ratio of width to height, because it is neighbouring to fiber flow that fluid more is willing to be intended to separating surface, and it is moving to be reluctant to cross the vertically disposed surface demarcation surface current that forms between adjacent absorbing component.

And, be designed to the selected multiple absorbing material near the fluid suction area easy to use according to the vertical orientated permission absorption pad assembly of adjacent absorbing component of the present invention with relevant absorbent article.Persons of ordinary skill in the art may appreciate that comprising at least some absorbent articles that different feminine care for example comprises sanitary towel may need to interrelate so that use satisfactorily with the fluid with different or various widely possible compositions.Like this, the exploitation of improved absorption pad assembly of the present invention and absorbent article in this area is one and improves greatly, because wherein possible multiple different absorbing material can be arranged to easily near the fluid suction area.And absorption pad assembly of the present invention can advantageously be avoided the complexity relevant with above-mentioned horizontal dependency with absorbent article.

According to a preferred embodiment of the present invention, absorbing component preferably has the ratio of width to height less than 1, so that realize the benefit of absorbing component of the specific orientation of absorption pad assembly of the present invention and absorbent article more completely.

Although the height of each absorbing component of absorption pad assembly 36 is identical with width, the application that is appreciated that broad of the present invention is so restriction not necessarily, if desired, the present invention can adopt have differing heights, width or the absorbing component of these two.

The absorbing component that is used for the present invention's practice can be made or be formed by for example various suitable absorbing material well known in the art.For example, be used for the selected absorbing component of the present invention practice can be by various hydrophilics natural or synthetic fibers make or form, these natural or synthetic fibers comprise cellulose fibre, the meltblown fibers that surfactant is handled, wood pulp cellulose, regenerated fiber, the mixture of cotton fiber or other fiber.

It is the material of common shaping that the structure of absorbent member materials can be included in describe in the United States Patent (USP) 4100324 generally well-known.Altogether moulding material is available from being positioned at Neenah, the Kimberly-Clark company of Wisconsin, and, the non-woven material of making by the air shaping matrix of thermoplastic polymer fiber and the multiple wood pulp cellulose of handling respectively normally, and it has the textile-like facing.The thermoplastic fibres polymer has the average diameter less than 10 microns usually, its wood pulp cellulose of handling respectively uniformly dispersing on matrix, and be used for making these microfibres to be separated from each other out.The initial secondary airflow formation that utilizes primary air and comprise wood pulp cellulose of this material with melt-blown micro-fiber, and under turbulent condition, two kinds of air-flows are merged, to form synthetic gas stream along profiled surface.

In certain embodiments, hope can be used the absorbing material with the material character of surging.Various Woven fabrics and non-woven outer lining can be used to construct the material of surging.For example, the material of surging can be melting and spraying or non-woven fabric layer that spunbond outer lining constitutes by polyolefin filaments.The short fiber that this non-woven fabric layer can comprise or the conjugate fibre of other length, biconstitutent fibre and homopolymer fibre, and the mixture of the fiber of these fibers and other type.It can also be by bonding combing outer lining or air lay outer lining natural and/or that synthetic fibers constitute that torrent is handled fiber.Bonding combing outer lining can for example be powder bonding combing outer lining, infrared bonding combing outer lining or ventilative bonding combing outer lining.Bonding combing outer lining can comprise mixture of different fibers or admixture selectively, and the fiber length ranges in selected outer lining can be from about 3mm to about 60mm.

The special examples of material of surging can and be authorized in the United States Patent (USP) 5364382 of Latimer and find at the United States Patent (USP) 5490846 of authorizing people such as Ellis.Surging material can be by being that hydrophobic material constitutes basically, and this hydrophobic material can be handled with surfactant or handle through other selectively, with wettability and the hydrophilic that obtains required degree.

Another kind of possible suitable absorbing material is the material that is called as PRISM available from Kimberly-Clark company.Referring to the United States Patent (USP) 5336552 of authorizing people such as Strack, the disclosure of this patent provides as a reference at this in full to the description of PRISM and instruction.PRISM is supatex fabric normally, it comprises the multicomponent polymerization bundle that extrudes that contains the first and second polymerization compositions, this first and second aggregates into branch and is arranged in different basically zone on the cross section of multicomponent bundle, and extends continuously along the length of multicomponent bundle.Best, this bundle is can be by the continuous fibers of spunbond technology formation.Second composition of bundle constitutes along at least a portion of the outer surface of the successive multicomponent bundle of the length of multicomponent bundle, and comprises the mixture of polyolefin and vinyl alkyl acrylate copolymer.Bonding between the multicomponent bundle can be by adding thermosetting.More particularly, the content of the first polymerization composition of multicomponent bundle for the weight of bundle from about 20% to about 80%, and the content of the second polymerization composition of multicomponent bundle is from about 80% to about 20% of the weight of bundle.Best, the content of the first polymerization composition of multicomponent bundle for the weight of bundle from about 40% to about 60%, and the content of the second polymerization composition of multicomponent bundle is from about 60% to about 40% of the weight of bundle.

Term " bundle " refers to by making a kind of polymer pass for example elongated extrudate of mould formation of a shaped hole as used herein.Bundle comprises the fiber of the discontinuous bundle with finite length and the silk of continuous beam material.Supatex fabric of the present invention can be formed by staple multicomponent fibers.This staple fibre can be through combing and bonding, to form supatex fabric.Yet best, supatex fabric of the present invention is made by extruding, drawing-off and the continuous spunbond multicomponent silk that is laid on the mobile profiled surface.

The type of the nonwoven fabric materials that can adopt comprises powder bonding combing outer lining, infrared bonding combing outer lining and ventilative bonding combing outer lining.Infrared and ventilative bonding combing outer lining can comprise mixture of different fibers selectively, and the fiber length ranges in selected fabric outer lining can be from about 1.0 to about 3.0 inches, and average volume density is that about 0.02g/cc is to about 0.12g/cc.

Other the suitable absorbing material that is used for the present invention's practice can comprise the material that is commonly referred to as the superabsorbent thing.The superabsorbent thing can have and comprises the multi-form of microgranule and fibers form.Known superabsorbent materials comprises on AFA 130-53C that Dow Chemical produces and the market available from Stockhausen Company of Greensboro, the W77553 of North Carolina and FAV880A.The W77553 of Stockhausen is the polymeric polyacrylate of handling through hydrophobic surface of volume.The FAV880A of Stockhausen is highly cross-linked surperficial superabsorbent thing.AFA 130-53C is available from Midland, 850 to 1400 microns polymeric polyacrylate material of suspended substance of the Dow Chemical Company of Michigan.

The hydrogen glue material that is commonly referred to as the superabsorbent thing can be the form of the water-soluble crosslinked a little and neutral hydrogel shaping of part polymerization composition.It can be by undersaturated polymerisable monomer and the cross-linking agent preparation that contains acidic group.This superabsorbent thing is at the United States Patent (USP) 4798603 of authorizing people such as Meyers, authorizes issuing United States Patent (USP) 32649 again and authorizing people's such as Pedersen United States Patent (USP) 4467012 and belong to instruction to some extent in the european patent application 0339461 of public publication of Kellenberger of people such as Brandt.The disclosure of these patents and european patent application provides as a reference at this in full.

In addition, the material that is well known that " at a slow speed " superabsorbent thing also is used for practice of the present invention." at a slow speed " the superabsorbent thing refers to have the superabsorbent thing of at least 5 minutes more preferably greater than 10 minutes soak time index (ATI).The absorption rate that can realize regulating the superabsorbent thing by the chemical property that changes particle size, surface nature and polymer.This thing of superabsorbent is at a slow speed described in detail in the United States Patent (USP) 5843063 of authorizing people such as Anderson, and the disclosure of this patent provides as a reference at this.

The suitable absorbing material that is used for practice of the present invention can also adopt for example the begin to speak form of polyurethane foam of absorbing foams, and it is for example open in the United States Patent (USP) 5853402 of authorizing people such as Faulks, and the disclosure of this patent provides as a reference at this.And, can also use for example disclosed starch foam in the United States Patent (USP) 5506277 of authorizing Griesbach III, the disclosure of this patent provides as a reference at this.

The present invention also can utilize wavy supatex fabric, and for example the wavy supatex fabric of disclosed high bulk density is as suitable absorbing material in the United States Patent (USP) 3668054 of authorizing Stumpf, and the disclosure of this patent provides as a reference at this.As disclosed herein, this fabric generally includes the wavy outer lining of the textile fabric that initially aligns, and this textile fabric is implanted in the continuous film with thermoplastic cements of constant thickness in fact.Then, the outer lining adhesive material of generation is made wavy, and so that many grooves and groove to be provided, these grooves are being connected near its root and along its respective side brokenly with groove.

Can recognize, be used for the suitably shaping that the suitable material of practice of the present invention can be different, for example melt and spray or air lay or air are shaped.Term " meltblown fibers " is often referred to the fiber of such shaping: with fusion silk or filament form be expressed in the high velocity air (for example air flow) that converge by many mould pores tiny, that be generally circle molten thermoplastic, the latter is reduced to the degree of microfibre diameter with the long filament drawing-down of molten thermoplastic to cause its diameter.Subsequently, this meltblown fibers is generally being carried secretly by high velocity air, and deposits on the collection surface, and the result is configured as the outer lining of being made up of meltblown fibers random, distribution at random.Meltblown fibers can be continuous or discontinuous, collects surface viscosity normally when going up when depositing to.Melt-blown material has a detailed description in the United States Patent (USP) 5656361 of authorizing people such as Vogt, and the disclosure of this patent provides as a reference at this.

And, can also use the structure of the absorbent member materials that for example contains or comprises one or more different additives, this additive for example is coagulating agent, resolvent or superabsorbent thing.Determine that as above adjacent absorbing component is preferably in one or more character or characteristic aspect difference, for example chemical constituent or structure are as fibre orientation or thickness difference.According to a preferred embodiment of the present invention, this adjacent absorbing component advantageously is preferably in selected character or the characteristic aspect difference except density, character or the feature of for example utilizing prior art to be not easy to obtain.Particularly, make adjacent absorbed layer or the horizontal dependency between it minimum or elimination can cause utilizing and select the special or specific character or the absorbing material of feature.

And, be appreciated that the application of broad of the present invention is not necessarily limited to special or specific absorbing material, and if desired, can use for example other known absorbing materials of those skilled in the art.For example, various materials are through design with improve so that handle better or be applied to this product and may need the different condition used.

In practice of the present invention, if desired, but block piece and the layering of absorbing component loosely, perhaps by use binding agent, heat or ultrasonic technique, line connects or suturing skill or other suitable interconnection technique known in the field are attached on the adjacent block piece and absorbing component.

The application that is appreciated that broad of the present invention not necessarily is limited in for example uses above-mentioned absorption pad assembly as whole or whole basically absorbent cores.For example, the part of this absorption pad assembly can be adopted, other absorber element layering thereon of other possible absorbing material, folding or close its shaping will be comprised as absorbent cores according to absorbent article of the present invention.And absorbent article according to the present invention comprises by other absorber element and forms or comprise the middle part of other absorber element and absorption pad assembly of the present invention layering, folding or near its shaping.

Fig. 4-6 is respectively according to the

absorbent article

70,72 of alternate embodiment of the present invention and 74 simplified schematic partial top view.

As shown in Figure 4, absorbent article 70 comprises tergite 80, absorbent cores 82 and top flat (not shown).Absorbent cores 82 comprises the absorption pad assembly 84 of centrally-located similar to the above or placement, this absorption pad assembly 84 has some vertical orientated absorbing components 86 (a-i) respectively, and common planar FLUID TRANSPORTATION block piece 88 (a-h) is interposed between corresponding paired and other adjacent absorbing component.

The illustrated absorbent article 72 of Fig. 5 comprises tergite 90, absorbent cores 92 and top flat (not shown).Absorbent cores 92 comprises the absorption pad assembly 94 of centrally-located similar to the above or placement, yet two or more absorbing component are interposed at least between some the most contiguous block piece.

More particularly, absorption pad assembly 94 comprises the some vertically orientated absorbent members 96 (a-i) that have common planar FLUID TRANSPORTATION block piece 98 (a-d) respectively.

The absorbent article 74 that Fig. 6 represents comprises tergite 100, absorbent cores 102 and top flat (not shown).Absorbent cores 102 comprises the absorption pad assembly 104 of centrally-located similar to the above or placement, and this absorption pad assembly 104 comprises the some vertically orientated absorbent members 106 (a-e) that have common planar FLUID TRANSPORTATION block piece 108 (a-d) respectively.Yet in absorption pad assembly 104, one or more common planar FLUID TRANSPORTATION block pieces 108 (a-d) are into form of discontinuity.For example, carry block piece 108a to comprise first section 110 and second section 112.Similarly, carry block piece 108b to comprise portion's section 116,120 and 122; Carry block piece 108c to comprise portion's section 124,126 and 130; And carry block piece 108d to comprise portion's section 132 and 134.

Although the block piece portion section of absorbent article 74 and absorbing component have even or symmetric figure as shown in the figure, the scope of broad of the present invention needn't so limit.For example, according to the needs of absorption pad assembly or the applied application-specific of absorbent article, arbitrary or two block piece portion sections and absorbing component can be inhomogeneous or asymmetric figures.

Although portion's section of a specific block piece not necessarily links together, use the block piece portion section that links together to simplify usually and make and assembling, so normally best.Yet, use the portion's section that does not link together may allow bigger design flexibility, for example, two or more different materials can be used for each section of a specific block piece.

The side cross-sectional view of Fig. 7-9 absorbent article 140,142 that to be respectively alternative preferred embodiments more according to the present invention look along the X-X axis direction and 144 simplified schematic.

Fig. 7 represents to comprise the absorbent article 140 of above-mentioned top flat 150 and tergite 152 and absorbent cores 154.Absorbent cores 154 comprises absorption pad assembly 156 according to an embodiment of the invention.More particularly, absorption pad assembly 156 is made of some vertically orientated absorbent members 160 (a-m) and common planar FLUID TRANSPORTATION block piece 162 (a-f) respectively usually.

Fig. 8 represents to comprise the absorbent article 142 of above-mentioned top flat 166 and tergite 170 and absorbent cores 172.Absorbent cores 172 comprises the absorption pad assembly 174 according to one particular embodiment of the present invention, in the structure of a preferred embodiment of the present invention, absorption pad assembly 174 for example is made of some vertically orientated absorbent members 176 (a-n) and common planar FLUID TRANSPORTATION block piece 180 (a-i) respectively.In these and subsequently accompanying drawing, the semi-permeable or directional characteristic of the block piece that some is such is by in this specified reference marker schematic representation, and in this differentiation, rather than resemble Fig. 3 and above-mentioned use cone and analog to represent.

According to this embodiment, block piece 180c and 180g be permeate fluid therefrom usually, block piece 180d, 180e and 180f have semi-permeable character, therefore not allowing at least usually, some material therefrom flows through, block piece 180a, 180b, 180h and 180i are directed block pieces, therefore, fluid is preferably in usually on the specific direction and therefrom flows through.More particularly, block piece 180a only allows fluid therefrom to be flowed to absorbing component 176b by absorbing component 176a usually.Similarly, block piece 180b, 180h and 180i only allow usually fluid by absorbing component 176b on the direction of absorbing component 176c, by absorbing component 176m on the direction of absorbing component 1761 and on the direction of absorbing component 176m, flowing by absorbing component 176n.

For the person of ordinary skill of the art, obviously can use this or similar design or structure, for example ideal absorption characteristic with special requirement or pursuit or the absorption pad assembly of feature or the relevant absorbent article that is particularly suitable for special-purpose or use that provide.

Fig. 9 represents to comprise the absorbent article 144 of above-mentioned top flat 180 and tergite 182 and absorbent cores 184.Absorbent cores 184 comprises the absorption pad assembly 186 according to one particular embodiment of the present invention, in the structure of another preferred embodiment of the present invention, absorption pad assembly 186 for example is made of some vertically orientated absorbent members 190 (a-n) and common planar FLUID TRANSPORTATION block piece 192 (a-i) respectively.

With respect to absorbent article shown in Figure 3 30, in absorbent article 144, each all vertical non-extension altogether of block piece 192b, 192c, 192g and 192h with above-mentioned adjacent absorbing component, and for example can allow between the selected part of adjacent absorbing component, to contact.

The difference change and the combination that are appreciated that the foregoing description are possible and are contained in this.For example, the possible version of various the foregoing descriptions relates to comprising and one or morely is positioned at top or is positioned at the layer of the absorbent article material of following void layer or other selections.More particularly, according to the present invention, wish in absorbent article to comprise that a for example above-mentioned fluid that is positioned at below the absorption pad assembly retains material layer.In some applications, wish to comprise a fluid for example known in the field material layer of surging, it becomes overlaying relation with for example above-mentioned absorption pad assembly.And, depending on circumstances, each be positioned at top or be positioned at following layer this to be positioned at top or following degree can be part or complete according to the needs of special applications.

According to the present invention, absorbing structure can be easily by one of for example for example above-mentioned adjacent setting between the above-mentioned selected absorbing component in advance the first common planar FLUID TRANSPORTATION block piece of differential permeability form or make, and make the block piece and the absorbing component orientation of adjacent setting, to provide or to cause having the structure of required horizontal width and the ratio of vertical height.As above described in detail, the absorbing component that structure according to the present invention is advantageously comprised has the ratio that is no more than about 10: 1 horizontal width and vertical height, is preferably and is no more than about 5: 1, is more preferably about 1: 1 or littler.Be appreciated that the shaping of this structure or make and to relate to one or more for example above-mentioned required variablees of ideal selection or parameter, the material that comprises quantity, size and dimension and character, feature and this block piece and absorbing component arbitrary of the arbitrary of block piece and absorbing component or two adjacent settings or two s' structure, the instruction that for example provides here.

Be appreciated that arbitrary in block piece and the absorbing component or two can initially provide on different orientation, for example can maybe cannot need subsequently directed again.Yet in a specific manufacturing process according to the present invention, block piece and absorbing component horizontal slice and vertical subsequently directed again are to provide required structure.

As mentioned above, if desired, but adjacent block piece and the layering of absorbing component loosely, perhaps by use binding agent, heat or ultrasonic technique, line connects or suturing skill or other suitable interconnection technique known in the field mutually combine.According to a preferred practice of the present invention, if use, this combination is implemented before being preferably in may need directed again.

And, can comprise one or more cutting steps or operation according to the method for this absorbing structure of formation of the present invention.For example, the block piece of adjacent setting and absorbing component can suitably cut to provide or to supply the assembly of the absorption pad with ideal selected shape or form, and this shape or form for example are fit to the specific use that this absorption pad assembly is planned application.According to hope in special-purpose, this cutting may occur in directed front or rear or preceding and after.Different device for example known in the art can obtain, and therefore, this cutting of adjacent absorbing component can utilize for example slit cutter and water jet cutting realization.

Although at absorbent article the present invention is described above, the absorbent cores in this absorbent article comprises according to independent absorption pad assembly of the present invention, is appreciated that the application of broad of the present invention is not restricted to this.For example, for the person of ordinary skill of the art, be appreciated that if desired that the present invention can adopt the absorbent article that comprises the selected a plurality of such absorption pad assemblies of two or other.And this absorbent article can comprise so two or morely to become to separate as required in application-specific, the absorption pad assembly of stack, partial stack or other selected relation.

Like this, the invention provides the absorption pad assembly, absorbent article and relevant method, it allows to utilize its absorbability more fully or fully according to hope.For example, absorption pad assembly and absorbent article can have for example above-mentioned block piece, and this block piece is between the selected vertical component effect section of specific absorbing component, to regulate fluid flow wherein.Particularly, this absorption pad assembly and absorbent article can be orientated and be designed to block piece and be used for guiding fluid flow, so that allow the better utilization absorbability, for example by better or more completely utilizing the middle part and the length of respective absorption goods, simultaneously, for example by preferably discharge or the guiding fluid to the center flow of absorbing structure, that avoids usually that the fluid at the edge of absorbent article do not expect is saturated.Consider this; be appreciated that; the present invention also provides the operation of the possible relative broad range of response and absorption pad assembly, absorbent article and the relevant method of executive condition usually, this assembly and goods be exposed under this operation and the executive condition with compare former more effective and/or efficiently mode implement.

Can there be disclosed especially any element here, partly, implement under the situation of step, parts or composition lacking in this suitable disclosed the present invention.

Although described the present invention in some preferred embodiments in detail, in order to explain many details have been proposed also, to those skilled in the art, under the prerequisite of the ultimate principle that does not exceed part, obviously the present invention is subject to the influence of additional embodiment, and details more described herein can considerably change.

Claims

1, a kind of absorption pad assembly, it comprises: at least one is the first common planar FLUID TRANSPORTATION block piece of differential permeability in advance, and this FLUID TRANSPORTATION block piece is interposed between first and second vertically orientated absorbent members.

2, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece comprises impermeable material.

3, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece comprises the flowing positioning material.

4, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece comprises semipermeable materials.

5, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece is upheld with one of them vertical being total in first and second absorbing component.

6, absorption pad assembly as claimed in claim 5 is characterized in that, at least the first block piece is vertical with first and second absorbing component upholds altogether.

7, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece is upheld with one of them vertical non-being total in first and second absorbing component.

8, absorption pad assembly as claimed in claim 7 is characterized in that, the vertical non-extension altogether with first and second absorbing component of at least the first block piece.

9, absorption pad assembly as claimed in claim 1 is characterized in that, at least the first block piece is a form of discontinuity.

10, absorption pad assembly as claimed in claim 1 is characterized in that, each forms first and second absorbing component by having different absorbefacient materials.

11, absorption pad assembly as claimed in claim 1 is characterized in that, each forms first and second absorbing component by the material with same absorbent.

12, absorption pad assembly as claimed in claim 1 is characterized in that, it also comprises second block piece that separates at least the second absorbing component with at least the first block piece.

13, absorption pad assembly as claimed in claim 12 is characterized in that, second excludes second absorbing component at least one absorbing component of also being separated by outward mutually with at least the first block piece.

14, absorption pad assembly as claimed in claim 1 is characterized in that, one of them first and second absorbing component comprises the material of surging.

15, absorption pad assembly as claimed in claim 1 is characterized in that, at least one in first and second absorbing component comprises the superabsorbent thing.

16, absorption pad assembly as claimed in claim 1 is characterized in that, at least one in first and second absorbing component comprises the non-woven material of being made by the air shaping matrix of thermoplastic polymer fiber and the multiple wood pulp cellulose of handling respectively.

17, absorption pad assembly as claimed in claim 1, it is characterized in that, in first and second absorbing component at least one comprises the multicomponent polymerization bundle that extrudes that contains the first and second polymerization compositions, this first and second aggregates into branch and is arranged in different basically zone on the cross section of multicomponent bundle, and extends continuously along the length of multicomponent bundle.

18, a kind of absorbent article, it has a contact surface, this absorbent article comprises: an absorption pad assembly, this absorption pad assembly comprises at least the first and second common planar FLUID TRANSPORTATION block pieces, each block piece has the permeability of selecting in advance, and be interposed between a pair of absorbing component, this absorbing component vertically is provided with respect to contact surface usually.

19, absorbent article as claimed in claim 18 is characterized in that, first and second block pieces have the identical permeability of selecting in advance.

20, absorbent article as claimed in claim 18 is characterized in that, first and second block pieces have the different permeabilitys of selecting in advance.

21, absorbent article as claimed in claim 18 is characterized in that, at least one in first and second block pieces comprises impermeable material.

22, absorbent article as claimed in claim 18 is characterized in that, at least one in first and second block pieces comprises the flowing positioning material.

23, absorbent article as claimed in claim 18 is characterized in that, at least one in first and second block pieces comprises semipermeable materials.

24, absorbent article as claimed in claim 18 is characterized in that, the spaced apart some absorbing components of first and second block pieces.

25, absorbent article as claimed in claim 18 is characterized in that, it also is included in the liquid-tight tergite on the garment side of goods.

26, absorbent article as claimed in claim 18 is characterized in that, it also is included in the saturating liquid overlay on the body side surface of goods.

27, absorbent article as claimed in claim 18 is characterized in that, it is a sanitary towel.

28, a kind of method, it comprises:

At adjacent at least one first common planar FLUID TRANSPORTATION block piece of differential permeability in advance that is provided with between first and second absorbing component at least, and make the block piece of adjacent setting and first and second absorbing component orientation, wherein each first and second absorbing component has the ratio that is no more than about 10: 1 horizontal width and vertical height.

29, method as claimed in claim 28 is characterized in that, each all has the ratio that is no more than about 1: 1 horizontal width and vertical height first and second absorbing component of directed adjacent setting.

30, method as claimed in claim 28 is characterized in that, it also comprises:

Cut first block piece and first and second absorbing component of adjacent setting, to form the absorption pad assembly.

31, method as claimed in claim 30 is characterized in that, first block piece of adjacent setting and first and second absorbing component were cut before orientation.

32, method as claimed in claim 30 is characterized in that, first block piece of adjacent setting and first and second absorbing component are cut after orientation.

33, method as claimed in claim 30 is characterized in that, cutting step comprises the cutting of slit cutter.

34, method as claimed in claim 30 is characterized in that, cutting step comprises the water jet cutting.

35, method as claimed in claim 28 is characterized in that, it also is included in directed first block piece of adjacent setting and at least one mutual step for adhering in first and second absorbing component of making before.

36, method as claimed in claim 35 is characterized in that, adhesion step comprises that binding agent is bonding.

37, method as claimed in claim 35 is characterized in that, adhesion step comprises heat bonding.

38, method as claimed in claim 35 is characterized in that, adhesion step comprises ultrasonic bonds.

39, method as claimed in claim 35 is characterized in that, each of first block piece and first and second absorbing component is bonding before orientation.

40, method as claimed in claim 28 is characterized in that, first block piece comprises impermeable material.

41, method as claimed in claim 28 is characterized in that, first block piece comprises the flowing positioning material.

42, method as claimed in claim 28 is characterized in that, first block piece comprises semipermeable materials.

43, method as claimed in claim 28 is characterized in that, first block piece is upheld with at least one vertical being total in first and second absorbing component.

44, method as claimed in claim 43 is characterized in that, first block piece is vertical with first and second absorbing component upholds altogether.

45, method as claimed in claim 28 is characterized in that, first block piece is upheld with at least one vertical non-being total in first and second absorbing component.

46, method as claimed in claim 45 is characterized in that, the vertical non-extension altogether with first and second absorbing component of first block piece.

47, method as claimed in claim 28 is characterized in that, first block piece is a form of discontinuity.

48, method as claimed in claim 28 is characterized in that, each forms first and second absorbing component by having different absorbefacient materials.

49, method as claimed in claim 28 is characterized in that, each forms first and second absorbing component by the material with same absorbent.

50, method as claimed in claim 28 is characterized in that, also comprises second block piece with spaced apart at least the second absorbing component of at least the first block piece.

51, method as claimed in claim 50 is characterized in that, first and second block pieces spaced apart except that second absorbing component also spaced apart at least one absorbing component.

52, a kind of method that forms the absorption pad assembly, described method comprises:

Make at least one the first common planar FLUID TRANSPORTATION block piece horizontal slice of differential permeability in advance between first and second absorbing component; With

Make the block piece of horizontal slice vertical with first and second absorbing component directed again.

53, method as claimed in claim 52 is characterized in that, it also comprises:

Cutting horizontal stratified first is carried block piece and first and second absorbing component.

54, method as claimed in claim 52 is characterized in that, its also be included in vertical make before directed again first of horizontal slice carry block piece respectively with first and second absorbing component step for adhering.

55, method as claimed in claim 52 is characterized in that, each all has the width that is no more than about 20mm vertical first and second directed again absorbing component.

56, method as claimed in claim 52 is characterized in that, each all has the ratio of width to height less than 1 vertical directed again first and second absorbing component.

57, a kind of method that is used to improve fluid treatment by absorbent article, this absorbent article has a contact surface, and this absorbent article comprises a saturating liquid overlay, a liquid-tight tergite, and be arranged on an absorption pad assembly between overlay and the tergite, this method comprises:

Utilize a kind of absorption pad assembly, this absorption pad assembly comprises first a common planar FLUID TRANSPORTATION block piece of differential permeability in advance, and this FLUID TRANSPORTATION block piece is interposed in a pair of usually with respect between the vertically disposed absorbing component of contact surface.

58, method as claimed in claim 57 is characterized in that, absorbent article is a sanitary towel.