CN101036609A - Drapeable absorbent article - Google Patents
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- CN101036609A CN101036609A CN 200710088677 CN200710088677A CN101036609A CN 101036609 A CN101036609 A CN 101036609A CN 200710088677 CN200710088677 CN 200710088677 CN 200710088677 A CN200710088677 A CN 200710088677A CN 101036609 A CN101036609 A CN 101036609A
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Abstract
An absorbent article including a cover layer, a barrier layer and an absorbent system arranged between the cover layer and the barrier layer, the absorbent article being drapeable and possessing the absorbency attributes required of a sanitary napkin.
Description
The cross reference of related application
The application requires the priority of the 60/783rd, No. 169 U.S. Provisional Patent Application of submission on March 16th, 2006.
Technical field
The present invention relates generally to sanitary absorbent article, the women use sanitary napkin that is specifically related to approach, high-absorbable also can dangle.
Background technology
External sanitary towel is one of numerous women's Protection Products that use at present.Because the high Development of Materials of liquid absorption capacity on the unit volume makes the integral thickness of sanitary towel to reduce, can not feel the product of feeling bad thereby can make more comfortable and use.For example, in the U.S. Patent No. 4,950,264 (hereinafter referred to as " ' 264 patent ") of T.W.Osborne III by the agency of this thin, elasticity sanitary towel.
Term " elasticity " is commonly used to describe article in the prior art to because of it being applied the resistance of the deformation that external force causes.For example, ' 264 patents claim and have disclosed a kind of sanitary towel that when by piston mechanism this sanitary towel being applied external force, it has " low flexing resistance ".
Yet the sort of " elasticity " definition that ' 264 patents provide can't be weighed integral body " (drapeable) can the dangle " characteristic of absorbent article.That is to say that this product may have " low flexing resistance ", but is not " can dangle " as herein defined.Term " can dangle " or " but drapability (drapeability) " here be meant when with cantilevered fashion when described article one end is mentioned it, these article are because action of gravity and the trend of vertical suspention.The article that can dangle also trend towards with adjacent surperficial consistent, and for example the sanitary towel that can dangle in use will trend towards fitting with health, thereby improve comfortableness.
Fabric and other dry goods material that is used for clothes tend to have this " can dangle " characteristic.The clothes that the fabric of this with having " can dangle " characteristic is made can make the wearer feel submissiveer, and can move with the wearer, thereby has improved the comfort of user.
Have these absorbent articles of characteristic that " can dangle " and can improve wearer's comfort.In other words, but have sufficient drapability as fruit product, can and the underwear of the thigh of user and user between the space match, then can improve the comfort of user.On the contrary, if absorbent article fully can not dangle, user will be felt ill and can be felt the existence of absorbent article.In addition, if this absorbent article is got together or is out of shape, it will keep this shape, and this just can not provide sufficient protection.
Therefore, although prior art has been introduced " elasticity " absorbent article, still need to dangle and to have absorbent article, the especially sanitary towel of the required absorptive capacity of this absorbent article.
Summary of the invention
According to a first aspect of the invention, the invention provides a kind of absorbent article, it comprises cover layer; Barrier layer; And between described cover layer and barrier layer, comprise the absorption system of super absorbent polymer (SAP), and the absorption index of described absorbent article (AI) is at least about 1.5, and average density is at least about 0.14g/cm
3, thickness is less than about 2.0mm.
According to a second aspect of the invention, the invention provides a kind of absorbent article, it comprises cover layer; Barrier layer and between described cover layer and barrier layer, comprise the absorption system of super absorbent polymer (SAP), the average absorption capacity (AC) of described absorbent article is at least about 5.0g, and average density is at least about 0.20g/cm
3, thickness is less than 2.0mm.
Description of drawings
Referring now to accompanying drawing the example of embodiment of the present invention is described, wherein:
Fig. 1 is the top view as the described sanitary towel of embodiment of the present invention, and wherein, the cover layer of sanitary towel is partly removed to show absorption system;
Fig. 2 is the axonometric chart of Fig. 1 sanitary towel, has described when with cantilevered fashion resulting position when described sanitary towel one end is mentioned sanitary towel;
Fig. 3 is the bottom view of sanitary towel shown in Figure 1;
Fig. 4 is the viewgraph of cross-section that the longitudinal centre line 4-4 along sanitary towel shown in Figure 3 looks;
Fig. 5 is the top view as the described sanitary towel of another embodiment of the invention, and wherein, the cover layer of sanitary towel is removed to show absorption system by part; And
Fig. 6 is the viewgraph of cross-section that the longitudinal centre line 6-6 along sanitary towel shown in Figure 5 looks.
The specific embodiment
The preferred embodiments of the invention comprise absorbent article, sanitary towel particularly, it yes, elastic, can dangle, and have the required absorptive capacity of sanitary towel.The test method of estimating absorbent article absorbent properties of the present invention and overhanging character is provided below.
Process of the test
For needing six samples at least according to measurement of test method absorbent article described here.For each test of carrying out here, the tested part of absorbent article should be identical, and promptly test specimen must be taken from the corresponding site of each outturn sample.Any absorption portion as fruit product can both satisfy this test, and then this absorbent article meets method of testing described here.
Measure the process of average improved circular bend stiffness (MCB) and Unit Weight (BW)
Improved circular bend stiffness (MCB, Modified Circular Bend Stiffness) is to determine that by the method for testing of setting up according to ASTM D 4032-82 circular bend procedure described program is carried out through significant improvement and by following process.Circular bend procedure is the program that a kind of while makes deformation of body on a plurality of directions, wherein, and recessed and another rat in a surface of sample.Circular bend procedure has provided the power value of a stiffness on relevant with flexing resistance, simultaneously average all directions.
The required device of circular bend procedure is an improved circular bend stiffness tester (Circular BendStiffnessTester), and it comprises with the lower part:
1. the plate platform of a polishing, it is of a size of 102.0 millimeters * 102.0 millimeters * 6.35 millimeters, has a diameter and be 18.75 millimeters hole.The adjoining edge in this hole should be miter angle, and the degree of depth is 4.75 millimeters;
2. the piston of 72.2 millimeters of total lengths, 6.25 millimeters of diameters, piston has a radius to be 2.97 millimeters ball nose (ball nose) and to be 0.33 millimeter needle point from wherein stretching out 0.88 millimeter, root diameter (RD), one radius is arranged less than 0.5 millimeter point on the needle point, described piston is center fixation with the hole and all has equal gap in all sides.Notice that described needle point only is in order to prevent that specimen from sidesway taking place in process of the test.Therefore, if needle point has significant harmful effect (for example puncturing expandable structure) to specimen, then can not use needle point.The bottom of piston should be placed on the top of orifice plate well.From this position, the ball nose moves downward and can accurately arrive dull and stereotyped bottom of going up the hole;
3. an ergometer, the Instron reverse compression of more specifically saying so LOAD CELLS (inverted compressionload cell).The load range of this LOAD CELLS is about the 0.0-2000.0 gram;
4. an actuator, the Instron 1122 type actuators of more specifically saying so and having the reverse compression force cell.(Canton Mass) makes Instron 1122 by Instron Engineering Corporation.
As described below, for carrying out this test, each tested goods needs the outturn sample of Three Represents.Want tested sanitary towel, or the position of other absorbent article is selected by the operator.37.5 millimeters * 37.5 millimeters specimen is downcut at each corresponding position from three outturn samples.Before the cutting specimen, need to remove all release paper or packaging material, and cover the binding agent of all exposures, as be positioned the binding agent of coat with non-sticky powder such as Talcum etc. from outturn sample.Talcum should not influence the measurement of BW and MCB.
Specimen does not answer the testee folding or crooked, must be the least possible to moving of sample, and can only move the edge, to avoid influencing flexing resistance.
Circular bend procedure is carried out as follows.It is that 21 ℃ ± 1 ℃ and relative humidity are conditioning 2 hours under 50% ± 2.0% the condition that sample is placed on temperature.
The weight of the specimen of every cutting is in gram and divided by the factor 0.0014.This is so that gram/square metre (gsm) be the Unit Weight of unit.With the unit weight value of each specimen on average to obtain average Unit Weight (BW).Specimen is concentrated on the underpiston orifice plate, so the medial one deck of specimen just in the face of the barrier layer of piston and sample just towards flat board.Piston speed is set to 50.0 cm per minute/full stroke.If necessary, check and regulate indicator zero point.Start piston.In test process, should avoid the engaged test sample.With the maximum power of immediate gram number scale record.It is all tested up to all three specimen to repeat above-mentioned steps.Then that three test values that write down are average, to obtain average MCB stiffness or " MCB ".The average MCB of preferred absorbent article of the present invention is more preferably less than about 100g, most preferably less than 80g less than about 200g.All the other not after tested sample be used for following absorption index test.
Determine the process of absorption index (AI)
For making the suitable effect of absorbent article performance, it must have good absorption characteristic, so that the protection that prevents pollution clothes and seepage is provided for user." absorption index " of absorbent article (AI) (as herein defined) be measuring of object liquid handling performance.The absorption index of absorbent article (AI) is by two kinds of liquid handling performance: rewetting (R) and liquid infiltration time, (FPT, Fluid Penetration Time) was definite.Absorption index used herein (AI) is defined as follows:
Wherein
R=rewetting value
The FPT=liquid infiltration time
Determine that absorbent article rewetting value (R) and the method for liquid infiltration time (FPT) are as follows.Need three new outturn samples to test rewetting value described below (R) and liquid infiltration time (FPT).
The absorption index of absorbent article of the present invention (AI) preferably is at least about 1.5, more preferably at least about 1.7, most preferably at least about 1.8.
Measure the liquid infiltration time method
The liquid infiltration time places sample in liquid infiltration test (Fluid Penetration Test) orifice plate and measures.Orifice plate is that 25.4 centimetres of 7.6 cm x, thickness are that 1.3 centimetres polycarbonate plate constitutes by area, and there is a slotted eye in plate central authorities.The major axis of slotted eye is 3.8 centimetres, and minor axis is 1.9 centimetres.Orifice plate is arranged on the test product sample of absorbent article corresponding site, takes out 37 millimeters * 37 millimeters specimen from the outturn sample that above-mentioned MCB test detects.The major axis of slotted eye is parallel with the major axis of test product.
Test liquid is to make with the mixture of following simulated body fluid: with 49.5% solution, 49.05% glycerol (Emery 917), 1% phenoxyethanol (the Clariant Corporation Phenoxetol of 0.9% sodium chloride solution (VWR, numbering #VW 3257-7) preparation
TM) and 0.45% sodium chloride (the Baker sodium chloride crystal, #9624-05).
The graduated 10cc syringe that will contain 7 milliliters of test liquids is placed on the orifice plate, the outlet of syringe on the hole about 3 inches.With the syringe horizontal positioned, parallel with the test slab surface.From syringe, release liquid then, its speed for make liquid with the vertical current ostium of test slab in, when liquid contacts sample for the first time, start stopwatch.When seeing the sample part surface for the first time above the remaining liquid in the hole, stop stopwatch.It is exactly the liquid infiltration time between institute's timing on the stopwatch.Three outturn samples are on average calculated the average liquid infiltration time (FPT).This mean F PT can be used in the equation of above-mentioned absorption index (AI).
Measure the process of rewetting potential
Three outturn samples that use in aforesaid liquid time of penetration (FPT) test are used for following rewetting potential test.
Rewetting potential is that sanitary towel or other absorbent article keep the tolerance of the ability of liquid in its structure when sanitary towel contains big relatively quantity of fluid and is subjected to exterior mechanical pressure.Rewetting potential is determined and definition with following process.
The device that is used for the test of rewetting potential is identical with above-mentioned FPT test set, and comprise that some 3 inches * 4 inches rectangle Whatman#1 filter paper is (available from Whatman Inc., Clifton, NJ) and can be with precision the weighing utensil or the balance of weighing of+/-0.001 gram, some described Whatman filter paper, 2.22 the standard test weight of kilogram (4.8 pounds), described counterweight is of a size of 5.1 centimetres (2 inches) * 10.2 centimetres (4.0 inches) * about 5.4 centimetres (2.13 inches), can apply 4.14 kPas of (0.6psi) pressure to the surface of 5.1 * 10.2 centimetres (2 inches * 4 inches).
For the purpose of test process described here, test used three identical outturn samples with liquid infiltration and be used to the test of rewetting potential.After test liquid is applied in the orifice plate of above-mentioned FPT test,, measured 5 minutes in case see for the first time that by the upper surface of liquid the cover layer of sanitary towel just starts stopwatch.
Remove orifice plate after 5 minutes and sanitary towel is placed a hard water plane surface, cover layer up.
Put one in wet zone and fold 15 layers the filter paper of weighing in advance and make it placed in the middle, and place 2.22 kilograms standard test weight on the filter paper top.Filter paper and counterweight are arranged on the absorbent article, they are concentrated on apply region of fluid.Arrange filter paper and counterweight, make their major axis and vertically aliging of product.Start stopwatch immediately after being placed on filter paper and counterweight on the product, remove standard test weight and filter paper after 3 minutes rapidly.Measure the weight in wet base of filter paper and be accurate to 0.001 gram.Calculate the rewetting value with the weight difference (with the gram expression) between 15 wet metafiltration paper and the dried 15 metafiltration paper then.
This measurement is triplicate at least, when needing, and should should be before each the measurement with the counterweight wiped clean.Calculate average rewetting value (R) with three measured values then, this rewetting value (R) can be used in above-mentioned absorption index (AI) equation.
Measure the process of hygienic articles average thickness
Can after removing all packings of outturn sample, remove all release paper and whitewashing product, before above-mentioned MCB test, carry out thickness measure process described below to three outturn samples with Talcum etc.Reply will be carried out the position of MCB test and carry out the thickness measure of product.
Absorbent article preferred thickness of the present invention is more preferably less than 2.0 millimeters less than 2.5 millimeters, most preferably less than about 1.5 millimeters.The method of measuring absorbent article thickness is as described below.
Measure the required device of caliper and be four-footed scale (thickness) gauge available from Ames, it has a diameter 2 at 0.07psig pressure place " foot, accuracy of reading is 0.001 ".Digit preference type device.If sanitary towel's sample is independent FOLD AND PACK, then sample is opened and carefully flattened with hands.From outturn sample remove release paper and with its carefully be put back into the location adhesive-layer in order to avoid be pressed onto sample, guarantee that release paper entirely is placed on the sample.Do not consider flank (if any) when reading thickness.
The foot of rising gauge also places outturn sample on the datum level, and the foot of gauge just is positioned at the center of test product sample substantially like this.Essential careful when reducing foot, fall into outturn sample or apply over-drastic power to prevent foot.Sample is applied the power of 0.07p.s.i.g. and makes stable reading about 5 seconds.Read one-tenth-value thickness 1/10 then.This process is repeated three times at least, calculates average thickness then.
Overhang sex index and calculate (BW/MCB)
A kind of value that is used to describe absorbent article novel feature of the present invention is to overhang sex index (Drapeability Index) or BW/MCB.With the average MCB value of average Unit Weight BW, calculate and overhang sex index divided by above-mentioned test determines.
The sex index that overhangs of preferred absorbent article of the present invention is at least about 2.0, more preferably at least about 3.0, most preferably at least about 4.5.
Average density calculates
A kind of value that is used to describe absorbent article novel feature of the present invention is an average density.Average thickness and average Unit Weight BW based on above-mentioned test determines calculate average density.Calculate average density according to following equation:
Average density (g/cm
3)=(BW (g/m
2)/thickness (mm))/1000
The average density of preferred absorbent article of the present invention is at least about 0.12g/cm
3, more preferably at least about 0.17g/cm
3, most preferably at least about 0.20g/cm
3
The compound sex index (DCDI) that overhangs of average density
Another value that is used to describe absorbent article novel feature of the present invention is the compound sex index (DCDI, Average Density Compounded Drapeability Index) that overhangs of average density.BW/MCB value (promptly overhanging the sex index value) be multiply by average density calculates DCDI, can be expressed as following equation:
DCDI=(BW/MCB) * average density
The DCDI value of preferred absorbent article of the present invention is at least about 0.50, more preferably at least about 0.70, most preferably at least about 1.00.
The description of preferred embodiment
With reference to Fig. 1 and 2, wherein showed one embodiment of the invention, promptly women use sanitary napkin 20.
The longitudinal centre line 34 of sanitary towel 20 is the imaginary lines that sanitary towel 20 are divided into two same sections.What extend laterally from each vertical side 30,32 is respectively side 38 and 40.Main body 22 also has and the longitudinal centre line 34 vertical imaginary cross central lines 36 that also wait branch side 38,40 simultaneously.
As shown in Figure 4, main body 22 is layer structure, preferably includes cover layer 42, absorption system 44 and the liquid-tight barrier layer 50 of fluid permeable.
Main body--cover layer
Cover layer 42 can be that density is lower, the bulk nonwoven web material of high loft.Cover layer 42 can only be made of a kind of fiber, as polyester or polypropylene, perhaps can comprise the mixture of more than one fibers.Cover layer can be made of bi-component that contains low-melting component and high melting point component or composite fibre.Described fiber can be selected from various natural materials and synthetic, as nylon, polyester, artificial silk (with other fiber combinations), cotton, acrylic fiber etc. and their combination.Preferably, the Unit Weight scope of cover layer 42 is about 10-75gsm.
Bicomponent fibre can be made by polyester layer and polyethylene coat.Use suitable bi-component material will obtain fusile non-woven fibre.The example of this fusible fibers is seen and is set forth in Chicopee in the U.S. Patent No. of submitting on November 26th, 1,985 4,555,430.Use fusible fibers to be convenient to cover layer is fixed on absorbed layer and/or the barrier layer.
Preferred cover layer 42 has higher wettability, can not be hydrophilic especially although form tectal each fiber.Covering layer material also should contain many bigger holes.This is because cover layer absorbent article liquid and body fluid is transported to saltation point from health rapidly.Therefore, cover layer helps to shorten the time (time of penetration) that sanitary towel absorbs the quantity of fluid of giving.
Advantageously, the fiber that constitutes cover layer 42 can not lost its physical characteristic when wetted, in other words, and can shrinkage when their contact water or body fluid or lose its resilience force.Cover layer 42 can be through handling, so that liquid passes through easily.Cover layer 42 also has the effect of liquid being transferred to other each layer in the absorption system 44 rapidly.Therefore, cover layer 42 preferably wettable, hydrophilic and porous.When constituting the hydrophobic synthetic fiber by polyester or bicomponent fibre etc., the usable surface activating agent is handled cover layer 42, to obtain the wettability of required degree.
In a preferred embodiment of the invention, cover layer is to make with the spunlaced non-woven material that contains have an appointment 0-100% polyester and about 0-100% artificial silk.The described spunlaced non-woven material also polyester of the artificial silk of available about 10%-65% and about 35-90% is made.Also available polyethylene, polypropylene or cellulose fibre replace polyester and/or with its combination, use with artificial silk.Randomly, be used for tectal material and can comprise binding agents such as thermoplastic adhesives and emulsion binder.
In another embodiment preferred of the present invention, cover layer be with " liquid absorption time " (such as hereinafter definition) less than 100 seconds, preferably less than 50 seconds, most preferably make less than 30 seconds spunlaced non-woven material.
In another embodiment preferred of the present invention, cover layer be with form by " non-absorbent fiber " fully basically, " liquid absorption time " (such as hereinafter definition) less than 100 seconds, preferably less than 50 seconds, most preferably make less than 30 seconds spunlaced non-woven material.
Term " non-absorbent fiber " is used to represent do not keep in the polymer backbone of fibrous body itself fiber of any liquid here.The example of suitable non-absorbent fiber comprises: polypropylene, polyester, polyethylene and the bicomponent fibre that is combined to form by polypropylene, polyester and polyethylene.
By suitable finishing compositions, for example suitable surfactant and internal table surface-active agent, the surface of non-absorbent fiber can be " moistening forever " (hydrophilic).Fiber surface kept its wettable characteristic after spunlaced process represented here in term " moistening forever ".The surface is the commercially available prod and lists in following spunlaced examples of material for the object lesson of the fiber of moistening forever.
Preferably, the spunlaced material of the present invention comprises the non-absorbent fiber of at least 20 weight % fiber surfaces for moistening forever, more preferably at least 35 weight % fiber surfaces are the non-absorbent fiber of moistening forever, and most preferably at least 50 weight % fiber surfaces are the non-absorbent fiber of moistening forever.
One preferred embodiment in, spunlaced material " is made up of non-absorbent fiber " basically fully." form " expression here basically fully by non-absorbent fiber, the fiber of preferred at least 90 weight % is non-absorbent in the spunlaced cladding material, more preferably at least 95 weight % are non-absorbent, and most preferably the fiber of 100 weight % is non-absorbent.
In another concrete embodiment, covering layer material is to comprise about 10-90 weight % polypropylene fibre and 90-10 weight % polyester fiber, the spunlaced non-woven material of 35-65 weight % polypropylene fibre and 65-35 weight % polyester fiber more preferably from about, the liquid absorption time of covering layer material was less than 100 seconds, preferably less than 50 seconds, most preferably less than 30 seconds.
In some embodiments of the spunlaced covering layer material of the present invention, spunlaced cover layer is included in the preform net of introducing before in current entanglement (hydro entangling), and described preform network optimization choosing constitutes total cover layer weight of about 10-50 weight %.The Unit Weight of preferred preform Web materials is about 5-20gsm, more preferably from about 10-15gsm.The preform Web materials also preferably is made of non-absorbent material such as polyethylene or polypropylene.
At some covering layer materials is in the embodiment of the present invention of spunlaced material, and preferred tectal Unit Weight is about 30-80gsm, more preferably from about 40-60gsm.
Though the preferred embodiment of the invention adopts the fibroid non-woven material as cover layer, tool hole thin-film material also can be used as cover layer.
Measure the method for covering layer material liquid absorption time
As mentioned above, " liquid absorption time " of the preferred spunlaced covering layer material of the present invention (such as hereinafter definition) less than 100 seconds, preferably less than 50 seconds, most preferably less than 30 seconds.
The method of measuring the covering layer material liquid absorption time hereinafter is provided.
At first, the preparation test fluid, test fluid composed as follows:
(a) 50 gram Acrysol G111 are (from Rohm ﹠amp; Haas, Philadelphia, PA buys);
(b) 975 gram distilled water (72.8 dynes per centimeter); With
(c) 10 gram orchils (from Sigma-Aldrich Co., St.Louis, MO buys).
The gained test fluid is 42 dynes per centimeter.
Test process is as described below:
(1) with 2 " * 2 " size the covering layer material sample flatly be placed on horizontal surface such as the platform.Because non-absorbent material will influence the measurement of liquid absorption time, so nonabsorbable is measured the below that should be arranged in covering layer material;
(2) with suitable suction pipe 0.05 gram test droplets is added to the material upper surface.The top that the end of suction pipe should just in time be positioned at the material upper surface is freely dripped to reduce liquid as far as possible, but the suction pipe end should directly not contact with the material upper surface and force test fluid to enter material.
(3) start stopwatch after test droplets being added on the material, and after test droplets enters material fully, stop timing.
(4) 5 material samples are repeated said process, calculate average liquid absorption time, this meansigma methods i.e. " liquid absorption time " of this method mensuration.
The example of spunlaced cladding material
Listed the object lesson of three kinds of covering layer materials of the present invention below, and two reference embodiment are provided.Adopt the spunlaced technology of routine well-known to those skilled in the art, prepare the spunlaced cover layer of various the present invention.
Spunlaced tectal example I-current spunlaced nonwoven web of tangling, its Unit Weight is 50gsm, derive from Sabic Inc. by 50% 2.0dpf 130 type HyEntangle WA (polypropylene) fibers and 50% that derive from Fibervisions Inc.Covington GA, the 1.4dpf PET fiber series 300 of Sittard (Holland) is formed.2.0dpf 130 type HyEntangle WA fibers are " moistening forever " fibers.
Spunlaced tectal example II-current spunlaced nonwoven web of tangling, its Unit Weight is 50gsm, derive from PGI by 10gsm or 20 weight %, the code name of Inc.Charleston SC is the spunbond PP preform net of introducing before current tangle and 40gsm or the 80 weight % staple fibers formation of KO-CA-5, described staple fiber is to derive from Wellman Inc.Charlotte, the 1.5dpf 203 type PET fibers of NC..In this example, introduce " fiber " of moistening forever by the spunbond PP net of preform.In this example, spunbond PP net is " moistening forever ".
Spunlaced tectal example III-current spunlaced nonwoven web of tangling, its Unit Weight is 50gsm, 2.0dpf 130 type HyEntangle WA (polypropylene) fibers and the 40gsm or 80% that are derived from Fibervisions Inc.Covington GA by 10gsm or 20% derive from Wellman Inc., Charloette, the 1.5dpf 203 type PET of NC. are fibrous.2.0dpf 130 type HyEntangle WA fibers are " moistening forever " fibers.
Spunlaced material reference example I-current spunlaced nonwoven web of tangling, its Unit Weight is 50gsm, derives from Wellman Inc.Charlotte by 100%, the 1.5dpf 203 type PET of NC. are fibrous.
Spunlaced material reference example II-derives from Polymer Group Inc.Charleston for one kind, the code name of SC is the current of the JM-88-10-12 spunlaced nonwoven web of tangling, its Unit Weight is 50gsm, derive from PGI by 15gsm or 30 weight %, the spunbond PP that introduced before current tangle of Inc.Charleston SC and 35gsm or 70 weight % derive from Wellman Inc.Charlotte, and the 1.5dpf 203 type PET fiber short fibers of NC. are formed.
Measure above-mentioned example liquid absorption time separately, as shown in the table.
| Sample | Liquid absorption time, second N=5 |
| Spunlaced example of material I | 25.7 |
| Spunlaced example of material | 18.0 |
| II | |
| Spunlaced example of material III | 58.6 |
| Spunlaced material reference example I | ＞146.2 |
| Spunlaced material reference example II | ＞200 |
Cover layer 42 also can be embossed on the absorption system 44, so that cover layer is fused to following layer, thereby improves hydrophilic.This fusion can be partial, on many sites of the absorption system 44 of cover layer 42, or on whole contact surface.Perhaps, can cover layer 42 be appended on the absorption system 44 by bonding other method that waits.
Main body--absorption system
In specific embodiment of the present invention, absorption system 44 is main by SAP (super absorber) powder constituent that is deposited between cover layer and the barrier layer.Preferably, except between cover layer and the barrier layer the layer the surface on, SAP also can be applied to the inner surface of cover layer, barrier layer.The preferred binding agent that adopts adheres to SAP on the surface of the inner surface of tectal inner surface, barrier layer or the layer between cover layer and the barrier layer.For example, typical Pressuresensitive Adhesive can be applied on the inner surface of barrier layer as the Fuller 1491 available from Fuller Corporation, so that the SAP powder remains on original position.Find the very fast SAP of infiltration rate, be particularly suitable for as Sumitomo BA40B (Sumitomo Seika Chemical Companies Ltd., Osaka, Japan).For this structure, the SAP layer is preferably even basically, and its Unit Weight is at least 50gsm, preferably about 100 and 150gsm between.
In embodiment preferred of the present invention, absorption system is made of the super absorber that adheres to the organized layer between cover layer and the barrier layer.
In another embodiment of the invention, absorbed layer can only be made of the super absorber that adheres to cover layer inner surface or barrier layer inner surface.
Preferably, the super absorber that uses among the present invention has very high " gel blockage than " (as further specific definition hereinafter).Following absorbability value and gel blockage value are based under the pressure of 0.01psi in GAT (weight percent of absorbent detector) device the absorption to 0.9% saline solution.To the detailed description of the GAT equipment U.S. Patent No. 4,357,827 referring to McConnell, this patent is included into this paper as a reference.Suitable GAT test macro is available from M/K Systems, Danners, Ma.Be used for determining being described in detail as follows of method of testing of above-mentioned SAP absorption value.
At first use 100 purpose sieves (U.S. sieve series) to sieve SAP, stay SAP above 100 mesh sieves, by this method the preparation SAP that is used to test with separation.
The test pool of regulating the GAT device makes its plane than liquid storage vessel exceed 1 centimetre.WhatmanGF/A filter paper is placed top, GAT device to test pond, and this test pool contains a porous flat plate.The effect of filter paper is to guarantee that test fluid continuously flows among the SAP.
Test cabinet is that 1 inch plexiglas test tube constitutes by an internal diameter, second end that has first opening and covered by 100 order metallic screens.0.10 gram SAP powder is placed metallic screen top test cabinet, and this amount of SAP is equivalent to 200gsm.Can just put 4.4 grams into glass tubing through machining but can not be placed on powder top so that the nominal weight of 0.01psi to be provided with the coherent plexiglas ball of tube wall (plexiglass puck).
Test cabinet is placed the filter paper top, so that the outer surface of sieve and the filter paper adjacency that is arranged in the GAT test pool.This test was carried out 60 minutes, obtained the data of absorbed amount of liquid per 15 seconds by computer.By the g/g capacity was mapped to the time, can obtain the absorption curve of SAP sample.
As mentioned above, the SAP to the same type that uses in the above-mentioned test has carried out second test.Yet, in second test, 0.50 gram SAP powder being placed metallic screen top test cabinet, this amount of SAP is equivalent to 1000gsm.Carry out second test as mentioned above, and the g/g capacity was mapped to the time, obtain second absorption curve.
The ratio that is restrained the total capacity of the total capacity of sample and the 0.10 gram sample that gram/gram is represented by 0.50 of gram/gram expression has been determined " gel blockage ratio ".At t=1, calculated for gel blockage ratio 5,10 and 60 minutes the time.Following table has been summed up the absorption characteristic and the gel blockage ratio of commercially available super absorber.
Sumitomo BA-40B.
| Time (minute) | 0.1 the absorbability (g/g) of gram SAP | 0.5 the absorbability (g/g) of gram SAP | The gel blockage ratio |
| 1 | 34.9 | 10.4 | 0.30 |
| 5 | 37.6 | 27.0 | 0.72 |
| 10 | 37.9 | 29.2 | 0.77 |
| 60 | 38.8 | 29.8 | 0.77 |
As implied above, the super absorber that uses among the preferred the present invention preferably gel blockage ratio in the time of 1 minute is at least about 0.25.As implied above, the gel blockage ratio of the super absorber that uses among the present invention in 5 minutes the time is at least about 0.50, more preferably at least about 0.60, most preferably at least about 0.72.
Main body-barrier layer
Be barrier layer 50 below the absorbed layer 44, it contains makes liquid-tight membrane material, flows out sanitary towel and pollutes the underwear of user to prevent liquid in the absorption system 44.Barrier layer 50 is preferably made by polymeric membrane, but it also can can't see through but the permeable material of air is made by liquid, as making through the non-woven fabrics of water-proofing treatment or microporous membrane or foam.
Positioning adhesive 58 can be applied to the side of barrier layer, in use be attached on the clothes to guarantee sanitary towel 20 towards clothes.Positioning adhesive 58 can be covered by removable release paper 60, so that positioning adhesive was covered by removable release paper 60 before using.
Barrier layer can be gas-pervious, promptly allows steam raising.The known materials that is used for this purpose comprises non-woven material and microporous membrane, wherein, produces micropore by the stretch orientation thin film.Also can use and have curved pathway and/or its surface and have single or multiple lift permeable film, fiber, melt-blown material and the combination thereof repelling liquid and see through characteristic as ventilative backing layer.Thereby cover layer 42 and barrier layer 50 can combine along their marginal portion and form a kind of hermetically-sealed construction or flange seal, and it can be enclosed in absorbed layer 44 the inside.Combination by methods such as bonding, heat bonding, ultrasonic bonds, high frequency sealing, machine crimp or these methods forms seam.
Main body-back-up coat (stabilizing layer)
As illustrated in Figures 5 and 6, sanitary towel 20 also can choose wantonly and have the back-up coat 52 that is arranged between cover layer 42 and the barrier layer 50.Back-up coat 52 can be positioned between absorption system 44 and the cover layer 42, and perhaps it can be positioned between absorption system 44 and the barrier layer 50.Back-up coat 52 can make sanitary towel have higher flexing resistance (MCB) at this regional area.Back-up coat 52 can strengthen the structural intergrity of sanitary towel 20 at regional area, also can make sanitary towel have " can dangle " character simultaneously.
The length L 1 best length L 2 of back-up coat 52 less than absorption system 44.Like this, sanitary towel just has usually at first outside the back-up coat 52 54 and the second portion within back-up coat 52 56.The material of back-up coat 52 is through selecting, like this sanitary towel 20 in the flexing resistance (MCB) of the part within the back-up coat 52 (promptly in second portion 56) just greater than the part outside the back-up coat 52 (promptly in first 54).
Therefore, sanitary towel will have MCB value outside back-up coat 52 scopes and the 2nd MCB value within back-up coat 52 scopes at least.Preferred the 2nd MCB value is at least 400g.Available above " measure the process of improved circular bend stiffness (MCB) and Unit Weight (BW) " described in identical method calculate the MCB value of first 54 and second portion 56.
The width W 1 of back-up coat 52 preferably through selecting, makes its width W 2 with absorption system 44 identical.The length L 1 of preferred back-up coat is at least 37.5 millimeters, and width W 1 is at least 37.5 millimeters.
Should be if back-up coat 52 between cover layer 42 and absorption system 44, then constitutes the material of back-up coat 52 through selection, so that liquid arrives absorption system 44 easily.For example, back-up coat 52 can contain the non-woven material of the mixture that comprises synthetic fibers and/or cellulose fibre.It is conspicuous that suitable concrete material is formed the technical staff who is proficient in this field.
If back-up coat 52 is between absorption system 44 and barrier layer 50, the material that then constitutes back-up coat can be that liquid is impermeable.At this moment, back-up coat 52 can help barrier layer 50 to prevent that liquid from fleeing from from absorbent article.
Perhaps, if back-up coat between absorption system 44 and barrier layer 50, the material that then constitutes back-up coat can be an absorber, as second absorbent cores.For example, back-up coat 52 can contain the non-woven material of the mixture that comprises cellulose fiber peacekeeping SAP.
At last, back-up coat 52 can be set on the outer surface of barrier layer.In this embodiment, the material preferably liquid that constitutes back-up coat is impermeable, as second barrier layer.
Absorbent article of the present invention can comprise or not comprise flank, aileron or lappet and invest underwear to guarantee absorbent article.United States Patent (USP) 4,687,478 and the United States Patent (USP) 4 of Van Tilburg, 589,876, the United States Patent (USP) 4,900 of McCoy, 320, the United States Patent (USP) 4,608,047 of Mattingly has been described flank (being also referred to as tablet or fin in other things) and the use in healthy prevention articles for use thereof.Quoted the open text of whole these patents at this.As disclosed in the above file, in general, flank has elasticity and is configured to may be folded on the edge of underwear, so that flank is between the edge of underwear.
By placing in the face of the surface of clothes on the inner surface of clothes crotch, absorbent article of the present invention can be attached at the crotch of clothes.Can use the method for various attaching absorbent articles.For example, chemical method (for example binding agent), with mechanical attachment device (for example clip, belt, tether), and interlock, for example snap-on, button, VELCRO (Velcro USA, Inc., Manchester, NH), slide fastener or the like, these methods are some examples of the available various selections of craftsman.
Binding agent can comprise contact adhesive, applies with forms such as band shape, whirlpool shape or corrugated.The term contact adhesive is meant any release type binding agent or releasable viscous mode as used herein.The suitable bonding compositions comprises, for example, and water based pressure sensitive adhesive (as acrylic ester adhesive).Perhaps, adhesive composition can comprise the binding agent based on following composition: the emulsion-type or the solvent type adhesive of natural or synthetic polyisoprenes, styrene-butadiene or polyacrylate, vinyl acetate co-polymer or its combination; Based on the hotmelt of suitable block copolymer-be used for suitable block copolymer of the present invention to comprise: linearity or radial copolymer structure with general formula (A-B) x, wherein, block A is a polyvinyl aromatic hydrocarbons block, B block is poly-(mono-alkenyl) block, x represents the quantity of polymerization arm, wherein, x is the integer more than or equal to 1.Suitable block A polyvinyl aromatic hydrocarbons includes but not limited to: polystyrene, poly-αJia Jibenyixi, poly-ethyltoluene and their combination.Poly-(mono-alkenyl) block of suitable B block includes but not limited to: conjugated diene elastomers, for example polybutadiene or polyisoprene, or hydrogenated elastomer, for example ethylene-butylene or ethylene-propylene or polyisobutylene, or their combination.The commercial examples of these type block polymers comprises the Kraton that Shell Chemical Company produces
TMThe Vector that elastomer, Dexco produce
TMThe Solprene that elastomer, Enichem Elastomers produce
TMAnd Firestone Tire ﹠amp; The Stereon that Rubber Co. produces
TMHotmelt based on olefin polymer and copolymer, wherein, olefin polymer is the terpolymer of ethylene and comonomer, for example vinyl acetate, acrylic acid, methacrylic acid, ethyl acrylate, acrylic acid methyl ester., n-butyl acrylate, vinyl silanes or maleic anhydride.The commercial examples of these type polymers comprises Ateva (polymer that ATplastics produces), Nucrel (polymer that Dupont produces), Escor (Exxon Chemical).
When using binding agent, can use a peelable band, with the binding agent on the protection absorbent article before absorbent article is attached to crotch.Peelable band can be formed by any suitable flaky material, and it has enough viscosity and is attached on the binding agent, and remaining on correct position before using, but when the use absorbent article, it can easily be thrown off.Randomly, can peelable with on apply a coating to improve the easiness that peelable band removes from binding agent.Any coating of this result that can realize all can be used, for example silicone.
Arbitrary layer or all layers all can be colored in cover layer, absorbed layer, transfer layer, backing layer and the adhesive phase.This color includes but not limited to: white, black, redness, yellow, blueness, orange, green, purple or their combination.According to the present invention, can form color by dyeing, painted and printing.According to the present invention, used coloring agent comprises dyestuff and inorganic and organic pigment.Described dyestuff includes but not limited to: anthraquinone dye (solvent red 111, disperse violet 1, solvent blue 56 and solvent green 3), xanthene dye (solvent is green 4, Xylene Red 52, red substantially 1 and solvent orange 63), azine dye (pitch black) etc.Inorganic pigment includes but not limited to: titanium dioxide (white), white carbon black (black), ferrum oxide (red, Huang and brown), chromium oxide (green), ferrum ammonia ferrocyanide (blueness) or the like.
Organic pigment includes but not limited to: diarylide yellow AAOA (pigment Yellow 12), diarylide yellow AAOT (pigment Yellow 14), phthalocyanine blue (pigment blue 15), lithol red (pigment red 4 9:1), red shallow lake C (paratonere) or the like.
Absorbent article can comprise other known materials, layer and additive, as foam, Web materials, spice, medicine or medicament, wetting agent, odor control agent etc.Absorbent article can be chosen wantonly through embossing and form decoration.
Absorbent article can be packaged into the absorbent article of opening in carton, box or the sack.Consumer when needed, taking-up can be used.But also independent packaging of absorbent article (each absorbent article all is packaged in the outer package).
This paper has also considered to have the absorbent article of asymmetric and symmetric absorbent article, Os Canitis shape or the Semen arachidis hypogaeae shape at parallel longitudinal direction edge, and the tapered absorbent article that uses with T shape underwear.
By top description, the technical staff who is proficient in this field can determine essential features of the present invention, and under the situation that does not deviate from spirit and scope of the invention, can make changes and improvements.The embodiment that is proposed only is to put into practice various variations possible when of the present invention in order to set forth rather than will to be limited in.
Sample of the present invention
1 one kinds of sanitary towels of sample of the present invention, this sanitary towel has the (Schaumberg by Pliant Corp, Illinois) the product code name of Zhi Zaoing is the 0.9 mil polyethylene film barrier layer of #3492A, on tectal surface, be applied with 5.9 milligrams/square inch Fuller 1023 binding agents at barrier layer, from Polymer Group, Inc., Charlotte, the spunlaced covering layer material of 75gsm that North Carolina buys with product code name PGI 4012, and on the surface of barrier layer, there are 2.6 milligrams/square inch from Fuller Corp. in cover layer face, Fuller 1023 binding agents that St.Paul, Minnesota buy.Be from Little Rapids between cover layer and the barrier layer, Corp., the Little Rapids 2004 type wet-laying tissue paper layers that Green Bay, Wisconsin buy, its Unit Weight is 21.2gsm.The edge of sand paper layer inwardly leaves about 10 millimeters of the edge of cover layer and barrier layer.The sand paper aspect is about 50 mm wides * 170 millimeters long to the area of barrier layer one side, is coated with 10gsm Fuller 1023 binding agents.Before sand paper layer and adhesive phase and barrier layer and cover layer are combined, with 130gsm from Sumitomo Seika Chemicals, Co., Ltd. (Osaka, Japan) the super absorber layers of Sumitomo BA40B of buying deposits to sand paper and is coated with on the side of binding agent.Binding agent will surpass absorber and remain on the appropriate location.Deposit after the super absorber, sand paper layer and the barrier layer that is coated with SAP linked together.Barrier layer is coated with 20 milligrams/square inch from Fuller Corp. on the surface of clothes, the contact adhesive Fuller 1417 that St.Paul, Minnesota buy is used to adhere to underwear.
Reference sample #1 Carefree Perfect Fit Pantiliner
Reference sample #2 Kotex Lightdays Pantiliner
Reference sample #3 Always Ultrathin Sanitary Napkin
Reference sample #5 Libra Invisible Sanitary Napkin (Australia)
Test the sample and the reference sample of the invention described above according to method of testing as herein described, result of the test is listed in the following table.
| Unit Weight (gsm) | MCB (g) | Thickness (mm) | BW/MCB (l/m 2) | Rewetting (g) | FPT (s) | AI | Density g/cm 3 | DCDI | |
| Reference sample 1 | 116 | 20 | .85 | 5.80 | 6.27 | 499.88 | 0 | 0.136 | 0.792 |
| Reference sample 2 | 234.66 | 131.28 | 2.0 | 1.79 | 5.575 | 17.96 | 1.09 | 0.118 | 0.210 |
| Reference sample 3 | 292 | 247 | 2.55 | 1.18 | .05 | 5.8 | 2.0 | 0.115 | 0.135 |
| | 306 | 433 | 2.69 | .71 | .15 | 4.96 | 2.0 | 0.114 | 0.081 |
| Reference sample 5 | 569 | 475 | 3.01 | 1.2 | .307 | 5.55 | 1.97 | 0.189 | 0.227 |
| | 351 | 112 | 3.32 | 3.13 | 1.21 | 7.1 | 1.82 | 0.106 | 0.331 |
| Sample 1 of the present invention | 307 | 62.4 | 1.44 | 4.91 | .63 | 42.39 | 1.84 | 0.213 | 1.045 |
Measure the process of average absorption capacity (AC)
Also sample 1 of the present invention and reference sample products 1-6 are tested, to determine the average absorption capacity (AC) of product.The method of testing of determining average absorption capacity (AC) is as follows.
At least need three new outturn samples to carry out average absorption volume test described below.
The average absorption volume test is to carry out cutting on 37.5 * 37.5 square millimeters specimen of product sample.37.5 * 37.5 square millimeters the specimen of downcutting is taken from corresponding product position, and these positions are identical with those samples of taking from the product that is used for above-mentioned MCB and AI test.
Before the test, the air-flow bonded web by bicomponent fibre makes up at least 6 60 * 60 square millimeters seal from lightweight non-woven fabrics (as 0.7 ounce every square yard).The suitable example of non-woven material has PGI#4128.120 * 60 square millimeters section can be folded and seal the edge and seal, sample is wrapped in the inside with formation.Also can use other encapsulating structure,, and in the water clock part, can not hinder drippage to get final product as long as they can not hinder the absorption of sample to test fluid in the submergence part of this test.
Do not contain sealing of specimen and be dipped into saline solution (0.9%) 15 minute, hang-up was freely dripped saline 12 minutes then.Measure the weight in wet base of sealing then, be accurate to 0.01 gram.Seal the average weight in wet base that sample carries out said process and determines to seal to three.
Begin before the test, measure three dried 37.5 millimeters * 37.5 millimeters specimen weight separately earlier.
37.5 millimeters * 37.5 millimeters specimen are inserted sealing and will sealing of doing immersed saline solution (0.9%) 15 minute, hang up then, saline was freely dripped 12 minutes.Measure the weight in wet base of sealing with specimen then, be accurate to 0.01 gram.Then, the dry weight of specimen and the average weight in wet base of sealing are subtracted each other to obtain the absorptive capacity of specimen.Three 37.5 millimeters * 37.5 millimeters specimen are repeated this process, absorptive capacity is averaged, obtain average absorption capacity (AC) with the gram expression.Following table has provided among sample products 1 of the present invention and the reference sample products 1-6 average absorption capacity (AC) of each.
| Absorptive capacity (g) (AC) | |
| Reference sample 1 | .95 |
| Reference sample 2 | 2.67 |
| Reference sample 3 | 5.32 |
| | 9.63 |
| Reference sample 5 | 8.44 |
| | 11.32 |
| Sample 1 of the present invention | 8.3 |
The average absorption capacity (AC) of preferred absorbent article of the present invention is at least about 5.0g, more preferably at least about 6.5g, most preferably at least about 8.0g.
As mentioned above and with reference to figure 5 and 6, prepare the above-mentioned sample of the present invention that does not contain back-up coat 52 one by one.Yet the invention described above sample also can be configured to contain such back-up coat 52.
Sample 2 of the present invention
Sample 2 of the present invention has the structure identical with the invention described above sample 1, but also has a back-up coat between barrier and absorbed layer.Back-up coat is to be made up by the spunlaced polypropylene of 102gsm (available from BBA FiberwebFiltration, be called the spunlaced polyethylene of Typar/Tekton filter-type, type number is 3301N).The size of back-up coat is about 40 millimeters * 40 millimeters, and back-up coat is set at product central authorities.
Sample 2 of the present invention is tested to determine the MCB value of back-up coat inner region and back-up coat exterior domain, and the value of MCB is as shown in the table.
| MCB in the back-up coat zone (g) | The extra-regional MCB of back-up coat (g) | |
| Sample 2 of the present invention | 488 | 62.4 |
With regard to above-mentioned absorbent article of the present invention, provide have fabulous liquid handling performance, highly flexible, the absorbent article that can dangle.
Absorbent article of the present invention is used and can be realized by known to the skilled or predictable any hygienic protection, incontinence, medicine, absorption process and the technology of being proficient in this field in sanitary towel and other health care product.Therefore, the application comprises improvement of the present invention and version, as long as these improvement and version are within the scope of additional claim and equivalent variations thereof.
Claims (51)
1. absorbent article, described absorbent article comprises:
Cover layer;
Barrier layer; With
The absorption system that between described cover layer and described barrier layer, comprises super absorbent polymer (SAP);
Wherein, the absorption index of described absorbent article (AI) is at least about 1.5, and average density is at least about 0.20g/cm
3, thickness is less than 2.0mm.
2. absorbent article as claimed in claim 1 is characterized in that, the sex index (BW/MCB) that overhangs of described absorbent article is at least about 2.0.
3. absorbent article as claimed in claim 2 is characterized in that, the sex index that overhangs of described goods is at least about 3.0.
4. absorbent article as claimed in claim 3 is characterized in that, the sex index that overhangs of described goods is at least about 4.5.
5. absorbent article as claimed in claim 1 is characterized in that, the gel blockage ratio of described super absorbent polymer in the time of 1 minute is at least about 0.30.
6. absorbent article as claimed in claim 1 is characterized in that, the gel blockage ratio of described SAP in the time of 5 minutes is at least about 0.70.
7. absorbent article as claimed in claim 1 is characterized in that, the gel blockage ratio of described SAP in the time of 5 minutes is at least about 0.72.
8. absorbent article as claimed in claim 1 is characterized in that, the absorption index of described absorbent article (AI) is at least about 1.7.
9. absorbent article as claimed in claim 1 is characterized in that, the absorption index of described absorbent article (AI) is at least about 1.8.
10. absorbent article as claimed in claim 1 is characterized in that, the thickness of described absorbent article is less than about 2.5 millimeters.
11. absorbent article as claimed in claim 1 is characterized in that, the thickness of described absorbent article is less than about 2.0mm.
12. absorbent article as claimed in claim 1 is characterized in that, the thickness of described absorbent article is less than about 1.5 millimeters.
13. absorbent article as claimed in claim 1 is characterized in that, the DCDI value of described absorbent article is at least about 0.50.
14. absorbent article as claimed in claim 1 is characterized in that, the DCDI value of described absorbent article is at least about 0.70.
15. absorbent article as claimed in claim 1 is characterized in that, the DCDI value of described absorbent article is at least about 1.00.
16. absorbent article as claimed in claim 1 is characterized in that, the amount that described SAP exists is at least 50gsm.
17. absorbent article as claimed in claim 1 is characterized in that, the amount that described SAP exists is about 100-150gsm.
18. absorbent article as claimed in claim 1 is characterized in that, described SAP is fixed to described barrier layer towards a tectal side.
19. absorbent article as claimed in claim 1 is characterized in that, described absorption system comprises a layer between described cover layer and described barrier layer, and described SAP is fixed on the surface of the described layer between described cover layer and the described barrier layer.
20. absorbent article as claimed in claim 1 is characterized in that, described absorption system is made up of the SAP that is fixed on described cover layer or the described barrier layer inner surface.
21. absorbent article as claimed in claim 1 is characterized in that, described absorbent article has first and second portion, and the MCB of described second portion is greater than the MCB of described first.
22. absorbent article as claimed in claim 21 is characterized in that, the MCB of described second portion is greater than 400g.
23. absorbent article as claimed in claim 1 is characterized in that, described cover layer is the spunlaced material that comprises about 10-65 weight % artificial silk and about 35-90 weight % polyester.
24. absorbent article as claimed in claim 1 is characterized in that, the density of described absorbent article is at least about 0.17g/cm
3
25. absorbent article as claimed in claim 1 is characterized in that, the density of described absorbent article is at least about 0.20g/cm
3
26. absorbent article as claimed in claim 1 is characterized in that, the absorption index of described absorbent article is at least about 1.7.
27. absorbent article as claimed in claim 1 is characterized in that, the absorption index of described absorbent article is at least about 1.8.
28. an absorbent article, described goods comprise:
Cover layer;
Barrier layer; With
The absorption system that between described cover layer and described barrier layer, comprises super absorbent polymer (SAP);
Wherein, the average absorption capacity (AC) of described absorbent article is at least about 5.0g, and average density is at least about 0.14g/cm
3, thickness is less than 2.0mm.
29. absorbent article as claimed in claim 28 is characterized in that, the sex index (BW/MCB) that overhangs of described goods is at least about 2.0.
30. absorbent article as claimed in claim 28 is characterized in that, the sex index that overhangs of described goods is at least about 3.0.
31. absorbent article as claimed in claim 28 is characterized in that, the sex index that overhangs of described goods is at least about 4.5.
32. absorbent article as claimed in claim 28 is characterized in that, the gel blockage ratio of described super absorbent polymer in the time of 1 minute is at least about 0.30.
33. absorbent article as claimed in claim 28 is characterized in that, the gel blockage ratio of described SAP in the time of 5 minutes is at least about 0.72.
34. absorbent article as claimed in claim 28 is characterized in that, the gel blockage ratio of described SAP in the time of 5 minutes is at least about 0.77.
35. absorbent article as claimed in claim 28 is characterized in that, the absorption index of described absorbent article (AI) is at least about 1.7.
36. absorbent article as claimed in claim 28 is characterized in that, the absorption index of described absorbent article (AI) is at least about 1.8.
37. absorbent article as claimed in claim 28 is characterized in that, the thickness of described absorbent article is less than about 1.5mm.
38. absorbent article as claimed in claim 28 is characterized in that, the DCDI value of described absorbent article is at least about 0.50.
39. absorbent article as claimed in claim 28 is characterized in that, the DCDI value of described absorbent article is at least about 0.70.
40. absorbent article as claimed in claim 28 is characterized in that, the DCDI value of described absorbent article is at least about 1.00.
41. absorbent article as claimed in claim 28 is characterized in that, the amount that described SAP exists is at least 50gsm.
42. absorbent article as claimed in claim 28 is characterized in that, the amount that described SAP exists is about 100-150gsm.
43. absorbent article as claimed in claim 28 is characterized in that, described SAP is fixed on described barrier layer towards a tectal side.
44. absorbent article as claimed in claim 28 is characterized in that, described absorption system comprises a layer between described cover layer and described barrier layer, and described SAP is fixed on the surface of the described layer between described cover layer and the described barrier layer.
45. absorbent article as claimed in claim 28 is characterized in that, described absorption system is made up of the SAP that is fixed on described cover layer or the described barrier layer inner surface.
46. absorbent article as claimed in claim 28 is characterized in that, described absorbent article has first and second portion, and the MCB of described second portion is greater than the MCB of described first.
47. absorbent article as claimed in claim 48 is characterized in that, the MCB of described second portion is greater than 400g.
48. absorbent article as claimed in claim 28 is characterized in that, described cover layer is the spunlaced material that comprises about 10-65 weight % artificial silk and about 35-90 weight % polyester.
49. absorbent article as claimed in claim 28 is characterized in that, the density of described absorbent article is at least about 0.17g/cm
3
50. absorbent article as claimed in claim 28 is characterized in that, the density of described absorbent article is at least about 0.20g/cm
3
51. absorbent article as claimed in claim 28 is characterized in that, the absorptive capacity of described absorbent article is at least about 8.0g.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78316906P | 2006-03-16 | 2006-03-16 | |
| US60/783,169 | 2006-03-16 | ||
| US11/589,589 | 2006-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101036609A true CN101036609A (en) | 2007-09-19 |
Family
ID=38887924
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710088679 Pending CN101036611A (en) | 2006-03-16 | 2007-03-15 | Drapeable absorbent article |
| CN 200710088677 Pending CN101036609A (en) | 2006-03-16 | 2007-03-15 | Drapeable absorbent article |
| CN 200710088678 Pending CN101036610A (en) | 2006-03-16 | 2007-03-15 | Drapeable absorbent article |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710088679 Pending CN101036611A (en) | 2006-03-16 | 2007-03-15 | Drapeable absorbent article |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710088678 Pending CN101036610A (en) | 2006-03-16 | 2007-03-15 | Drapeable absorbent article |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN101036611A (en) |
| ZA (3) | ZA200702189B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103221007A (en) * | 2010-11-11 | 2013-07-24 | 尤妮佳股份有限公司 | Absorbent article |
-
2007
- 2007-03-15 CN CN 200710088679 patent/CN101036611A/en active Pending
- 2007-03-15 ZA ZA200702189A patent/ZA200702189B/en unknown
- 2007-03-15 ZA ZA200702190A patent/ZA200702190B/en unknown
- 2007-03-15 ZA ZA200702187A patent/ZA200702187B/en unknown
- 2007-03-15 CN CN 200710088677 patent/CN101036609A/en active Pending
- 2007-03-15 CN CN 200710088678 patent/CN101036610A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103221007A (en) * | 2010-11-11 | 2013-07-24 | 尤妮佳股份有限公司 | Absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200702189B (en) | 2009-05-27 |
| ZA200702190B (en) | 2009-05-27 |
| CN101036611A (en) | 2007-09-19 |
| CN101036610A (en) | 2007-09-19 |
| ZA200702187B (en) | 2008-12-31 |
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Application publication date: 20070919 |