CN1299258A - Stabilized absorbent material for personal care products and method for making same - Google Patents

Abstract

There is provided a material for personal care products having a body side layer with a basis weight of from about 10 to about 100 gsm, a density of from about 0.05 to about 0.5 g/cc and comprising synthetic fibers and binder, and a fluid retention layer having a basis weight of from about 50 to about 250 gsm, a density of from about 0.05 to about 0.5 g/cc and comprising synthetic fibers, binder and natural fibers, where a boundary between any two adjacent fibrous layers is indistinct in that fibers at or near the surfaces of such adjacent layer are significantly intermingled. The material may optionally include a fluid distribution layer and a fluid transfer layer and a garment side liner. Other optional components include superabsorbents and odor control compounds and the layers may be embossed for aesthetic and fluid control reasons.

Description

Stabilized absorbent material for personal care products and method for making thereof

Invention field

The present invention relates to the material structure thing in personal care product such as diaper, training pants, absorbability underpants, adult-incontinence articles, binder and feminine hygiene products and so on the absorbent article.

Background of invention

Personal care absorbent articles comprises such as diaper, training pants, feminine hygiene products such as sanitary towel, women scanties lining and tampon, incontinence garments and apparatus, binder etc.The basic styles of great majority of all these goods generally include, side liner and external coating and be arranged in side liner and external coating between absorbent core.Usually, side liner and external coating seal along periphery, so that in absorbent core is encapsulated in, thereby can captures any fluid and hold it in absorbent core inside.Look the difference of the specific design of personal care absorbent articles, also can comprise other compositions.For example, these goods can comprise such as elastic side panels, retaining liquid side, fasten device and fluid transfer and keep other layers of material.

Personal care product in the past follows always makes each monolayer material respectively, and the way that connects into the lamination thing is then made.In this case, the border comparative silhouette distinctness between the adjacent layer usually manifests in order to each layer maintained the binding agent that becomes the lamination thing together.Each layer produced respectively and is bonded together that to become the way of lamination thing be a kind of expensive program, needs many different production equipments.The personal care product that this method is produced with material between its every layer the border or have clear-cut boundary at the interface, can reduce the fluid transmission between the adjacent layer.

Therefore, an object of the present invention is to produce a kind of personal care product material, it does not need a plurality of production stages to make.Another object of the present invention is to produce a kind of personal care product material, wherein has unconspicuous border between the adjacent fiber layer, has the fiber of interlacing and entanglement each other, thereby can improve the fluid transmission between the adjacent layer.

Summary of the invention

The objective of the invention is to reach with material by a kind of like this personal care product, it comprises: body-side layers, basis weights are between about 10～about 100gsm, and density comprises synthetic fibers and/or binding agent between about 0.05～about 0.5g/cc; And hold liquid layer, basis weights is between about 50～about 250gsm, density is between about 0.05～about 0.5g/cc, comprise synthetic fibers, binding agent and/or natural fiber, border between wherein any two adjacent fiber layers is not obvious, wherein, the fiber of this adjacent layer surface or near surface mixes mutually to a great extent.

This material can randomly comprise fluid distribution layer and fluid transfer layer and garment side lining.Other optional ingredients comprise superabsorbents and abnormal flavour control chemical compound, and for consideration attractive in appearance and fluid control, these layers also can pass through embossing.

The accompanying drawing summary

Fig. 1 represents a kind of personal care product embossed pattern of sinusoidal wave decorative pattern.

Fig. 2 represents a kind of personal care product embossed pattern of shell decorative pattern.

Definition

" disposable " contained, and just abandons (with namely abandoning) after the use or do not plan washing also again Use.

" front " and " back side " in this explanation in full in order to refer to respect to this clothing item this The relation of body, rather than refer to be in wearer any position that clothes are taked with it the time when these clothes Put.

" hydrophilic " is used for describing the fiber or the fiber surface of the liquid, aqueous moistening that can be touched fiber.The wetness degree of material can adopt contact angle and surface tension between relevant liquid and the material to describe again.Being fit to be used for measuring wettable equipment of special fiber material and technology can be by Cahn SFA-222 surface force analyzer system, and system perhaps of equal value in fact provides.When adopting this system measurement, contact angle is defined as " wettable " or hydrophilic less than 90 ° fiber, and contact angle is equal to or greater than 90 ° fiber and then is defined as " not wettable " or hydrophobic.

" inwardly " and " outwardly " be meant position for the absorbent garment center, specifically, refer to laterally and/or vertically near or away from the vertical and horizontal center of absorbent garment.

" layer " when using with singulative, can bear a double meaning, that is, and and single primitive or a plurality of primitive.

" liquid " is meant non-particulate material, and/or certain material, and it can flow and can take to be poured into or to put into the shape of container wherein.

" fluid communication " is meant, liquid can from one deck move to another the layer, perhaps in one deck from a position to another position.

" vertically " and " laterally " has its habitual implication.The longitudinal axis is positioned on being placed on the plane and plane, goods place when launching fully, and be roughly parallel to goods when being through on one's body the wearer of standing to being divided into the vertical plane of left and right each half health.Transverse axis is positioned at the goods plane, and is approximately perpendicular to the longitudinal axis.These goods are painted as longitudinally than along horizontal length.

" granule " with regard to meaning of the present invention, is meant any such as but not limited to following geometric format: the surface of spheroidal particle, fiber or silk, smooth or roughening, lamellar, band shape, string, wire etc.

" spraying " and conversion thereof statement is contained, by the liquid of pressure ejaculations such as aperture, nozzle, or thread in the shape of a spiral stream thigh, or be micronized granule, force power to comprise air or other gas applied pressures, gravity or centrifugal force.Spraying can be continuous or discontinuous.

Term as used herein " conjugate fibre " is meant by at least two kinds of polymer to be extruded through extruder separately, but spinning forms same fiber together.Conjugate fibre is sometimes referred to as multicomponent or bicomponent fibre.Employed polymer differs from one another usually, though conjugate fibre also can be a homofil.These polymer are arranged in position basic fixed separately on the conjugate fibre section, each other in the zone of boundary distinctness, and extend continuously along the total length of conjugate fibre.The configuration of this type of conjugate fibre (section arrangement) can be, for example skin/core is arranged, wherein a kind of polymer by another kind of surrounded, perhaps can be arrange side by side, fan-shaped array, or arrange on " sea-island ".Conjugate fibre is disclosed in the United States Patent (USP) 5,108,820 of authorizing people such as Kaneko, authorize people's such as Strack United States Patent (USP) 5,336,552 and authorize in people's such as Pike the United States Patent (USP) 5,382,400.With regard to bicomponent fibre, polymer can with 75/25,50/50,25/75 or the ratio of any other hope exist.This fibrid also can have various shapes, as being seen in the United States Patent (USP) 5,277,976 of authorizing people such as Hogle and the United States Patent (USP) 5,069,970 and 5,057 of authorizing people such as Largman, 368.More than describe the patent and the application of non-traditional shape fiber and all receive the reference of making this paper in full.

Term as used herein " biconstitutent fibre " is meant by at least two kinds of polymer extrudes the fiber that forms from same extruder with blend.The definition of term " blend " can be seen in hereinafter.The various component of polymer that biconstitutent fibre comprised are not to be arranged on the fiber cross sections in the relatively-stationary district, position, and, various polymer are discontinuous usually along the whole length of fiber, but, the microfilament (fibril) or the primary fibril that often form random start and finish at random.Biconstitutent fibre also is referred to as multi-constituent fibre sometimes.This big fibrid is discussed in the United States Patent (USP) 5,108,827 of for example authorizing Gessner to some extent.Bi-component and biconstitutent fibre are also at textbook " blend polymer and complex ", John A.Manson and LeslieH.Sperling chief editor, copyright 1976 returns Plenum Press to own a branch of Plenum publishing company (New York), IBSN 0-306-30831-2,273～277 pages.

" air lay " is a kind of fiber non-woven layer manufacturing process of knowing.In the air lay process, one air flow that typical length is blown between the short and small fibre bundle of about 3～about 19mm disperses and carries secretly, deposits to then on the forming net, usually assisting down at vacuum source.Subsequently, random sedimentary fiber adheres to each other by for example hot-air or binding agent spraying.Air lay is for example discussed in following document: United States Patent (USP) 4,005,957,4,388,056,4,592,708,4,598,441,4,674,996,4,761,258,4,764,325,4,904,440,4,908,175 and 5,004,579, German patent DE 3508344 A1, european patent application 85300626.0 and UK Patent Application 2,191,793.

" personal care product " is meant diaper, training pants, absorbability underpants, adult-incontinence articles, binder and feminine hygiene products.

" feminine hygiene products " is meant sanitary towel or pad.

" target area " is meant the zone or the position of the personal care product that faces the common discharge opeing of wearer.

Test method

Material calliper (thickness): the material calliper is measuring of material thickness, adopts Starret type loft analyzer to measure under the 0.05psi condition, is unit with the millimeter.

Density: the density of material is by being the millimeter of the weight in grams number (gsm) of every square metre of sample divided by the thickness of sample under 68.9 handkerchiefs with the unit are example weight, and the gained result is multiplied by 0.001, just is scaled every cubic centimetre gram numerical value (g/cc).Measure 3 samples altogether, be averaged as density value.

Detailed Description Of The Invention

Personal care absorbent articles comprises such as following article: diaper, training pants, feminine hygiene products, and as sanitary towel, women underpants lining and tampon, incontinence garments and apparatus, binder etc.The basic styles of great majority of all these goods generally comprise side liner and external coating and be arranged in side liner and external coating between absorbent core.Usually, side liner and external coating seal along periphery, so that in absorbent core is encapsulated in, thereby can captures any fluid and hold it in absorbent core inside.Look the difference of the specific design of personal care absorbent articles, also can comprise other compositions.For example, these goods can comprise such as elastic side panels, retaining liquid side, fasten other layers of device and fluid transfer and maintenance material.

The patent application of and the application commonly-assigned us, same day submission, agents document number 13303.10 visible with the discussion of material about personal care product.The patent application of the visible commonly-assigned us of discussion of the manufacture method of relevant case 13303.10 materials, common unsettled agents document numbers 13817.

The present invention is a kind of personal care product material, adopts a kind of unsharp mode in border or interface that makes between the adjacent fiber layer of producing to make.The manufacture method of personal care product is in the past taked manufactured materials respectively always, and lumping together then becomes the lamination thing.In such cases, the border comparative silhouette between the adjacent fiber layer is distinct and clear, usually is used to the binding agent that each layer maintains together with the cambium layer compound is marked.

Material of the present invention is preferably made according to the air lay method, and wherein fiber suspension is preferably carried in air flow at air-flow, is deposited on cambium layer on the bottom thing then.A plurality of layers of being got on by sequential aggradation of material of the present invention are formed.The sequential aggradation of this kind material can become the net method to finish by many exhaust streams.In this kind method, each fibrous layer be not separately make, stabilisation individually, and then lumps together and become the lamination thing, but one deck forms on another layer.Certainly, whole material must carry out stabilisation in some way, but each individual course of the present invention does not then need.Stabilisation is that the use by binding agent realizes, if this binding agent belongs to the thermal activation type, obviously requires after fiber laydown material to be heat-treated.

Each individual fibers layer of material of the present invention owing to adopt the result of air lay method, comprises the fiber that the fiber of some and adjacent fiber layer is mixed with each other or tangles.Generally there is not binding agent between this characteristic of air lay and the adjacent layer, makes between the adjacent layer that border or interface are not clean cuts and clear, but very fuzzy.

With produce each layer respectively, then they being lumped together becomes the lamination thing and compares, and becomes the net method to produce material by many exhaust streams, has much higher cost benefit, therefore can reduce the cost of final consumer.

Material of the present invention has body-side layers, optional fluid transfer layer, holds the layer of liquid layer and clothes one side.This material also can have Distribution Layer or other optional layers, so that specific function to be provided.

Body-side layers also is called side liner or last slice sometimes.Along the thickness direction of goods, lining material is the layer that directly contacts wearer skin, therefore just contacts from the liquid of wearer or the 1st layer of other effluents.This lining plays isolates wearer skin and the effect that remains on liquid in the absorbent structure thing, and it should be submissive next to the shin, soft and non-stimulated.

The basis weights of body-side layers for example can be between about 10.0g/m ²(gsm)～and about 100gsm, density is between about 0.05g/cm ³(g/cc)～about 0.5g/cc.Side liner by synthetic fibers and binding agent by about 90/10～about 0/100, more particularly about 50/50～about 20/80, further specifically about 30/70 ratio is formed.Should be pointed out that preferred use binding property fiber rather than liquid adhesive, especially binder content greater than 10% situation under.

Side liner can be utilized the surfactant of selected quantity, and for example about 0.28%TritonX-102 surfactant carries out the processing of surface treatment or other modes, to give wettability or the hydrophilic that requires degree.If the use surfactant, it can be an inner additive, and perhaps according to any traditional approach, the method that for example sprays, brushes and so on is applying up before one deck under the deposition.

The liquid layer of holding of the present invention must absorb liquid from adjacent body-side layers according to the mode of control, so that liquid is stored in the not place of body contact.What be fit to this kind purposes holds the basis weights that the liquid material should have about 50～about 250gsm, the density of about 0.05～about 0.5g/cc.Hold the liquid material and comprise binding agent, synthetic fibers and natural fiber.Binding agent must exist with effective dose, generally between about 3～15wt%, and perhaps more particularly about 10wt%.Binding agent is not very interior, synthetic and natural fiber can according to about 0/100～about 50/50, more particularly about 10/90～20/80, further specifically about 40/60 ratio exists.Though any one deck of the present invention all can randomly comprise superabsorbents, holding liquid layer is the most logical layer that comprises this kind composition.This one deck can comprise 0～85wt% superabsorbents, and its content should be can be regarded as natural fiber during ratio between the material that calculate to exist.

According to the present invention, can make the layer of arbitrary number, but, useful especially extra play is a kind of the 2nd to hold liquid layer.This kind the 2nd held liquid layer and will be inserted into the 1st and hold between liquid layer and the garment side lining and can comprise the effective dose binding agent, and, do not include binding agent, about 75% natural fiber and about 25% superabsorbents fiber.Point out that above superabsorbents should be can be regarded as natural fiber during proportion of fibers in computation layer, so in this one deck, synthetic ratio to natural fiber does not include binding agent, is 0/100.

The garment side backing layer also is called rear panel or external coating, is apart from wearer (health) one deck farthest.External coating is made by the thin thermoplastic film traditionally always, polyethylene film for example, and it is to liquid impermeable substantially.The function of external coating is to prevent that the body exudates that comprises in the absorbent structure thing from drenching or the material of the wearer clothes of making dirty, sheet or other contact personal care products.Though external coating can be for example original depth between the polyethylene film of about 0.5 mil (0.012mm)～about 5.0 mils (0.12mm), preferably, with the part of external coating cost of manufacture invention material monolithic.In this case, preferably, garment side lining or external coating have the basis weights of about 10～about 100gsm, comprise the synthetic fibers and the binding agent of about 50/50～about 0/100 ratio.

External coating can and/or not have optical processing through embossing, so that aesthetic pleasant outward appearance to be provided.Comprise by making or handle to have given as other alternative constructions things of external coating requiring that degree liquid is impervious to be weaved or nonwoven web, perhaps by the lamination thing of weaving or supatex fabric and thermoplastic film constitute.External coating can be randomly by steam or gas can be thoroughly, micropore " breathability " material constitutes, yet it can see through steam or gas not saturating substantially to liquid.The breathability of thin polymer film for example can cause like this: add filler in polymer blend, then filler/polymer blend is extruded and be thin film, subsequently thin film is imposed the stretching that is enough to form the cavity that surrounds filler particles, thereby it is ventilative that thin film is become.Usually, amount of filler is high more, and level of stretch is big more, and then the breathability degree is big more.Backing (rear panel) under for example with the situation of non-weaving cloth as outer surface, also can play the effect of the co-operating member of mechanical tie-down members.

Optional fluid transfer layer also is called peak layer (surge layer), and it is clipped in for example fluid distribution layer or hold the contact condition that also is in tight fluid communication between the liquid layer with it of side liner and another layer.Fluid transfer layer or peak layer make fluid roughly along its Z-direction, that is, leave the side and move towards garment side.The peak layer generally is placed on the following adjacent position of side liner inner surface (non-exposed face).Preferably, the density of peak layer is between about 0.05g/cc～about 0.5g/cc; Basis weights is between about 10～about 100gsm.The peak layer can be the layer that is made of synthetic fibers, binding agent and natural fiber, and wherein binding agent exists with effective dose, and, not including binding agent, synthetic and natural fiber then exists with about ratio of 40/60～about 10/90.

Optional Distribution Layer can place the storage site of holding (towards wearer) above the liquid layer and fluid must be moved to requirement from the initial deposition point.Therefore, fluid distribution layer passes itself except allowing fluid along the Z-direction, and allows fluid along X and the migration of Y direction.Distribution should be carried out with acceptable speed, so that make the discharge opeing target area, generally at crotch region, is able to do in time to get ready for the discharge opeing that arrives next time.Time between twice discharge opeing can be depended on wearer age and concrete personal care product usually from having only a few minutes until several hours.For realizing this kind propagation function, Distribution Layer must have high capillary tension numerical value.Capillary tension in the dispensing materials can be weighed with the balance vertical wicking height of 8.5g/l saline solution simply, and should be greater than 15cm.The wicking test method comprises, an end of material is vertically put in the saline solution, waits for that solution reaches balance, measures the height that is reached then.The material of making Distribution Layer can be made of synthetic and natural fiber, wherein adopts a little binder.

Synthetic fibers comprise those and any other suitable synthetic fibers well known to those skilled in the art of being made by nylon, polyethylene terephthalate, artificial silk, polyolefin such as polypropylene, Lyocel regenerated cellulose.This kind synthetic fibers can comprise conjugation, two composition and homopolymer fibre, and they can be regular staple or other length, and the mixture of this fibrid and other types fiber.Synthetic fibers also can comprise the kosmotropes that is used to make the product degraded, just as discussed below.

Natural fiber comprises cellulose, for example wood pulp, Cotton Gossypii etc.Pulp comprises standard softwood short fiber level, for example the Coosa Mills CR-1654 of Kimberly-Clark company; The free pulp (HBAFF) of high fluffy additive formaldehyde, (Tacoma WA) produces, and this is the crosslinked southern softwood pulp fibres of a kind of high-temperature modulus by Weyerhaeuser company; And a kind of chemical crosslinking pulp fibers, for example Weyerhaeuser NHB416.HBAFF has a kind of will curling and the fixed chemical treatments of turn, and it also gives additional dried, wet deflection of fiber and resilience in addition.Another kind of suitable pulp is a Buckeye HP2 pulp, and another is IP Supersoft, is produced by International Paper company.Suitable rayon fiber is the fiber of 1.5 dawn, lot number 18453, is produced by Courtaulds fiber company (Axis, Alabama).

Binding agent comprises fiber, liquid or other heat-activatable adhesive means.The example binding agent comprises polyolefin and/or polyamide conjugate fiber and liquid adhesive.A kind of suitable bonding is skin/core conjugate fibre, by product (Hoechst-Celanese in the past) (the PO Box 4 of Trevira company, Salisbury, NC 28145-0004), commercial disignation T-255, but those skilled in the art also know many suitable fibers, and also have many manufacturing firms, for example, Chisso and Hercules company.Another kind of suitable binding property fiber is made by Danaklon company, is located at Engdraget 22, and KD-6800 Varde (Denmark) is a kind of 2 dawn conjugation PE/PP skin/core fibres, shearing length 6mm.A kind of suitable liquid adhesive is a Kymene  557LX binding agent, and (Wilmington DE) produces by Hercules company.

Superabsorbents comprises AFA-94-21-5, is produced by Dow Chemical Company (Midland MI); The AFA-130-53C of Dow Chemical; The W77553 of Stockhausen or the Favor of Stockhausen 870 and Sanwet IM 1500 superabsorbents are produced by Trevira company.

At present, for producing " can pour " or can putting in traditional toilet and just grow with each passing day for the concern of the personal care product of anaerobic tank or municipal wastewater processing system safety.A kind of method that improves the biodegradable performance of personal care product is to produce the product that will disintegrate rapidly under a kind of condition that exists in this type systematic.There is multiple mechanism can cause this result, but most of improper or unreliable, can cause product to be failed because of the time is incorrect, in other words, product disintegrates needs the undue long time.

Can be used in a kind of mechanism that can accept to bring out in the time restriction water degradability is ion-sensitive, here, the implication of term " ion " is meant, the molecular linkage group of a kind of atom or atom, obtain or lose one or more electronics, thereby have the negative or positive electric charge.Some polymer comprises acidic group (R-COO-) composition, and they maintain together by hydrogen bond.In dry state, these polymer remain solid.In having the aqueous solution of higher ion, for example in the urine, it is constant relatively that polymer still keeps.Yet same polymer ought be exposed to the water of the low ion concentration of larger amt subsequently, and when for example being present in the water in the toilet, ion concentration will reduce, so hydrogen bond begins to break.When this situation occurring, polymer itself will begin to disintegrate in water.Material with this specific character is referred to as kosmotropes.For example, authorize Varona, receive for referencial use in full at this referring to United States Patent (USP) 4,419,403.

For example in conjugate fibre, the 1st component polymer keeps stable in high ion concentration solution environmental (for example baby or one-tenth Urina Hominis and menstruation), can be sulfonated polyester AQ29, AQ38 or AQ55, is supplied by Eastman chemical company (Allen Ginsberg, Tennessee).Eastman AQ38 polymer is by 89mol% M-phthalic acid, 11mol% sodiosulfoisophthalic acid, 78mol% diethylene glycol and 22mol%1, and the 4-cyclohexanedimethanol constitutes.Its nominal molecular weight is 14,000 dalton (D), and acid number is lower than 2, and hydroxyl value is lower than 10,38 ℃ of glass transition temperatures.Other examples can be enumerated polyvinyl alcohol-or polyvinyl alcohol copolymer and polyacrylic acid or polymethylacrylic acid blending, perhaps blend of polyvinyl methyl ether and polyacrylic acid or polymethylacrylic acid blending.The Eastman series polymer is stable in the macroion solution environmental, but will disintegrate rapidly in the bowl water when bath (big water gaging) thereby reduction ion concentration.The Eastman polymer can with the 2nd component polymer than the high melting temperature scope, polyethylene for example, pairing is used.

Other the 1st stable in high ion concentration component polymer comprise " (can) the water dispersible polymer of mutation ".This meaning is, when the 1st component of conjugate fibre is exposed to the mutagenic agent composition, for example sulfate ion or chloride ion and this ion are in the 1st concentration of the such level of ordinary tap water, and the polymer that then constitutes the 1st component will disperse in being no more than 30min or disintegrate., when conjugate fibre the 1st component be exposed to be present in usually such as the baby become Urina Hominis or menstruation the 2nd, during the same mutagenic agent composition of higher concentration level, the polymer that constitutes the 1st component but still keeps stable and does not disperse.The suitable example of this kind the 1st component comprises that water can disperse polyester or polyamide polymer or copolymer, the copolyester polymer of for example national starch and chemical company's product, product code name 70-4395 and 70-4442.But conjugate fibre with the 1st component that comprises mutation, water dispersible polymer, specific mutagenic agent composition for the concentration level that exists in common urine or the menstruation is insensitive, yet when there being same mutagenic agent composition but its concentration is in different, reduced levels, representative value is for example as in a large amount of tap waters, as in toilet the time, then extremely sensitive and in being no more than 30min, disperse.Therefore, but raw material is or added the fibre web of mutation, water dispersible polymer, when touching the body fluid discharging, for example when urine or menstruation, its dispersibility is unaffected, yet is tending towards disintegrating along with the dispersion of conjugate fibre the 1st component in putting into ordinary tap water the time.

Further preferably, whole material carries out embossing to be handled, preferably from this one side of side liner.The embossing effect can perhaps can comprise optional fluid transfer layer and hold liquid layer gently to being only limited to side liner.The selection of embossing decorative pattern should densification be as the criterion to reach at utmost, and this will improve fluidic inlet capacity and along the dispersion of entire product, and fluid along the front to the distribution of back side axis.Embossing also can be wearer provides relevant goods capacity near saturated optical signal, informs and should lose, and also can be used to provide the aesthetic benefit.Suitably the example of embossed pattern is shown in the drawings.Fig. 1 is the personal care product embossed pattern that is referred to as sine wave pattern; Fig. 2 is the personal care product embossed pattern that is called the shell pattern.

Though only describe in detail above with regard to a few example embodiment of the present invention, but those skilled in the art are easy to recognize, on these example embodiment bases, under the prerequisite that does not depart from novel preach of the present invention and advantage, also can make many modifications.Therefore, all such modifications all should be included within the scope of the invention of following claim defined.In the claims, the requirement of means-plus-function is intended to contain for implementing the described structure of described function, and not only comprises structural equivalents but also comprise equivalent construction.For example, although nail and screw take periphery that the wooden part screw that is fixed together is then utilized on the meaning of helical surface from nail, the two is not a structural equivalents, but on the meaning of just fixing wooden part, nail and screw then can be considered as structure of equal value.

To be pointed out that further that any patent, application or publication that this paper quoted are all received the reference of making this paper in full.

Claims (23)

1. personal care product material, it comprises:

Body-side layers, basis weights are between about 10～about 100gsm, and density is between about 0.05～about 0.5g/cc, and it comprises the synthetic fibers and the binding agent of about 90/10～about 0/100 ratio;

Hold liquid layer, the about 50～about 250gsm of basis weights, the about 0.05～about 0.5g/cc of density, it comprises the synthetic fibers and the natural fiber of about 0/100～about 50/50 ratio, and the binding agent of effective dose;

Border between wherein any two adjacent fiber layers is not obvious, and the fiber of wherein said adjacent layer surface or near surface mixes mutually to a great extent.

2. the personal care product material of claim 1, it also comprises and the described adjacent garment side backing layer of the side away from described body-side layers of holding liquid layer, be selected from thin film and fibrous layer, basis weights is between about 10～about 100gsm, and comprises the synthetic fibers and the binding agent of about 50/50～about 0/100 ratio.

3. the personal care product material of claim 1, it also comprises the fluid transfer layer, be clipped in described body-side layers and described holding between the liquid layer, basis weights is between about 10～about 100gsm, density is between about 0.05～about 0.5g/cc, and comprise the synthetic fibers and the natural fiber of 40/60～about 10/90 ratio and effective dose binding agent.

4. the personal care product material of claim 1, it also comprises and the described adjacent fluid distribution layer in side of holding liquid layer, to the balance vertical wicking height of 8.5g/l saline solution greater than 15cm.

5. the material of claim 1, it also comprises the abnormal flavour absorption compound.

6. the material of claim 1, it also comprises superabsorbent particles.

7. the material of claim 1, it also comprises the periphery sealing.

8. the material of claim 1, it also comprises embossed pattern.

9. the material of claim 1, wherein the described synthetic fibers of at least a portion comprise kosmotrope.

10. personal care product material, it sequentially comprises:

Body-side layers, basis weights are between about 10～about 100gsm, and density comprises the synthetic fibers and the binding property fiber of about 50/50～about 20/80 ratio between about 0.05～about 0.5g/cc;

Fluid transfer layer, basis weights be between about 10～100gsm, and density is between about 0.05～about 0.5g/cc, and comprise the synthetic fibers and the natural fiber of about 40/60～about 10/90 ratio, and the binding agent of effective dose;

Hold liquid layer, the about 50～about 250gsm of basis weights, the about 0.05～about 0.5g/cc of density, and comprise the synthetic fibers and the natural fiber of about 10/90～about 20/80 ratio and the binding agent of effective dose;

The garment side backing layer, adjacent with a described side away from described body-side layers of holding liquid layer, be selected from thin film and fibrous layer, basis weights is between about 10～100gsm, and comprises the synthetic fibers and the binding property fiber of about 50/50～about 0/100 ratio;

Border between wherein any two adjacent fiber layers is not obvious, and the fiber of wherein said adjacent layer surface or near surface mixes mutually to a great extent, and described goods are with being selected from the pattern embossing that sine involves shell.

11. the material of claim 10, it also comprises the abnormal flavour absorption compound.

12. the material of claim 10, it also comprises superabsorbent particles.

13. the material of claim 10, it also comprises the periphery sealing.

14. the material of claim 10, it also comprises embossed pattern.

15. the material of claim 10, wherein the described synthetic fibers of at least a portion comprise kosmotrope.

16. a personal care product is selected from diaper, training pants, absorbability underpants, adult-incontinence articles, binder and feminine hygiene products, comprises the material of claim 10.

17. the personal care product of claim 16, it is a diaper.

18. the personal care product of claim 16, it is a training pants.

19. the personal care product of claim 16, it is the absorbability underpants.

20. the personal care product of claim 16, it is a binder.

21. the personal care product of claim 16, it is a feminine hygiene products.

22. the personal care product of claim 21, it is a sanitary towel.

23. a personal care product material, it sequentially comprises:

Body-side layers, basis weights be between about 10～about 100gsm, and density is between about 0.05～about 0.5g/cc, and comprise the synthetic fibers and the binding property fiber of about 30/70 ratio;

Fluid transfer layer, basis weights be between about 10～100gsm, and density is between about 0.05～about 0.5g/cc, and comprise the synthetic fibers and the natural fiber of about 40/60～about 10/90 ratio, and the binding agent of effective dose;

The 1st holds liquid layer, the about 50～about 250gsm of basis weights, and the about 0.05～about 0.5g/cc of density, and comprise the synthetic fibers and the natural fiber of about 4/60 ratio and the binding agent of effective dose;

The 2nd holds liquid layer, and it comprises the binding agent of natural fiber, superabsorbents fiber and effective dose;

The garment side backing layer is selected from thin film and fibrous layer, and basis weights is between about 10～100gsm, and comprises the synthetic fibers and the binding property fiber of about 50/50～about 0/100 ratio;

Border between wherein any two adjacent fiber layers is not obvious, and the fiber of wherein said adjacent layer surface or near surface mixes mutually to a great extent, and described goods are with being selected from the pattern embossing that sine involves shell.

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