CN1226976C - Absorbing article - Google Patents
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- CN1226976C CN1226976C CN 00108066 CN00108066A CN1226976C CN 1226976 C CN1226976 C CN 1226976C CN 00108066 CN00108066 CN 00108066 CN 00108066 A CN00108066 A CN 00108066A CN 1226976 C CN1226976 C CN 1226976C
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Abstract
This absorbent material 1 comprises a permeable surface layer 2, an impermeable liquid-repellent layer 3, and an absorbable absorbent layer 4 being intermediate between the above-mentioned both layers. In this case, the liquid-repellent layer 3 has at least moisture permeability. The absorbent layer 4 is provided with a deodorant sheet 9 including a deodorant. The deodorant sheet 9 is placed on the closest side to the liquid-repellent layer 3 in the absorbent layer 4, and occupies more than 50% of the area of the liquid-repellent layer 3 side in the absorbent layer 4.
Description
The present invention relates to absorbent commodity such as sanitary towel, disposable diaper, adult incontinent pads, pantiliner, pet pads etc.More specifically, the present invention relates to when dressing, prevent that moist internal medium from producing and to had the absorbent commodity of height control action by the stench that absorbs emission of liquid.
In the field with the absorbent commodity of disposable diaper, adult incontinent pads, pantiliner etc. such as baby and adult, use the poisture-penetrability application of anti-leakage layers as backsheet, the uncomfortable property of bringing to wearer with the moistening and damp in eliminate using, but also can suppress to cause the moisture swelling of skin of skin irritation.In the case, dampness is overflowed by the poisture-penetrability application of anti-leakage layers, has reduced the interior humidity of absorbent commodity.But,,, still have wearer or other people can feel the anxiety of stink so compare with absorbent commodity with non-poisture-penetrability application of anti-leakage layers because various stink composition also comes out by backsheet with dampness.
WO 97/48362 discloses a kind of absorbent commodity with aeration application of anti-leakage layers and deodorizer, and wherein this absorber comprises pair of fabric, and accompanies deodorizer at this in to fabric.According to this structure, when arriving not with the contacted side of the skin of wearer by the drainage body fluid that passes through in the part that comprises deodorizer, can not eliminate the stink that gives out by body fluid fully, make that the stink in the absorbent commodity is come out by application of anti-leakage layers.
Therefore, the purpose of this invention is to provide and a kind of the stink that is given out by absorb body fluids is had the height control action and can see through the absorbent commodity of dampness simultaneously.
The objective of the invention is to finish by following absorbent commodity, these article comprise liquid permeability top layer, non-liquid permeability application of anti-leakage layers and be arranged on the top layer and application of anti-leakage layers between liquid-keeping absorbed layer, wherein said application of anti-leakage layers has water vapo(u)r transmission at least, and described absorbed layer has the stink control sheet material that comprises the stink controlling agent, this stink control sheet material is arranged on the position of close application of anti-leakage layers, and account for towards the absorbed layer area of application of anti-leakage layers 50% or higher.
Below with reference to accompanying drawing the present invention is described in more detail, in the accompanying drawings:
Fig. 1 is the sectional view as the sanitary towel of an embodiment of the present invention's absorbent commodity; And
Fig. 2 A and 2B are respectively the sectional view (corresponding to Fig. 1) of sanitary towel on width of another embodiment that shows the present invention's absorbent commodity.
With reference now to accompanying drawing, is that the present invention is described on the basis with the preferred embodiment.Fig. 1 is the sectional view as the sanitary towel 1 of an embodiment of the present invention's absorbent commodity.
Sanitary towel 1 is rectangular basically when plane graph, and comprise top layer material 2, have water vapo(u)r transmission and at least that it is arranged between top layer material 2 and the backsheet 3 as the non-liquid permeability backsheet 3 of application of anti-leakage layers and as the absorber 4 of liquid-keeping absorbed layer.Absorber 4 and backsheet 3 link together by the hotmelt 5 that helical form is coated between them.Top layer material 2 and backsheet 3 are linked together by hotmelt 5 by the both sides of the edge of absorber 4 and the highlight of front and back end at them.Two contact adhesives 6 of coating on the outside of backsheet 3, and binding agent 6 usefulness releasing sheets 7 cover, this releasing sheet peels off in use, so that sanitary towel 1 is fixed on the underwear of wearer.
But backsheet 3 permeate water steams, and preferably can see through air.The humidity of sanitary towel's 1 internal medium increases when preventing to dress, and backsheet 3 preferably has 0.7g/100cm
2/ hr or higher, 1.0-5.0g/100cm particularly
2/ hr, especially 1.5-3.0g/100cm
2The moisture permeability of/hr.Be meant the numerical value of measuring according to JIS Z0208 at this used term " moisture permeability ".For steam is seen through but block other gases such as stink composition, backsheet 3 preferably has 30ml/ second or lower, particularly 15ml/ second or lower air permeability.At this used term " air permeability " is the numerical value of measuring according to JISP8117.
9 pairs of stinks that produced by the liquid that absorbs in the sanitary towel 1 of stink control sheet material have control action, and comprise the stink controlling agent.If stink control sheet material 9 comprise (a) meet non-swelling hydrophilic fibre of water or hydrophilic foam body or water maintenance dose be 0.7g/g or lower (this value the equilibrium water absorb and swelling after by centrifugal mensuration, be called the centrifugal water maintenance dose at this) hydrophilic fibre or hydrophilic foam body and (b) stink controlling agent, then can bring into play the stink control action fully.
When having the sanitary towel that comprises component (a) and stink control volume (b) when having absorbed release and making us the body fluid of unhappy stink, body fluid compiles to component (b) (stink controlling agent), and on the rest on component hardly surface of (a).The body fluid that compiles is controlled to be contacted with the stink controlling agent fast.Under its effect, because stink control sheet material 9 is arranged on apart from the skin side farthest, can prevent more effectively that the stink that is produced from escaping into outside the sanitary towel 1 by backsheet 3 simultaneously.
Meet non-swelling hydrophilic fibre of water or hydrophilic foam body and function and make component (a), it can be to meet the non-swelling synthetic resin of water, for example polyethylene, polypropylene, polyester, polyurethane and the composite that comprises two or more above-mentioned resins.Because these synthetic resin have hydrophobic surface, tackle them and carry out the hydrophilic processing, for example by spraying or being coated in adhesion surface activator solution on these synthetic resin fibers or the foaming body, perhaps in these synthetic fibers, mix the hydrophilic surfactant active in advance, molding fiber or foaming body are diffused on the surface of fiber or foaming body surfactant then.
Any hydrophilic surfactant active with lipophilic group and hydrophilic radical can be used in the above-mentioned processing.Preferred anion surfactant and the non-ionic surface active agent that adds the oxirane with big molal quantity is as sulfosuccinate, alkyl ether sulphuric acid, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether and fatty acid glyceride.These surfactants can use separately or with the form of mixture.In them, still preferably when using with the amount of 0.05-3%, can make synthetic resin have sufficient hydrophilic person in the weight of resin.
Can be used as the non-swelling hydrophilic fibre of chance water of component (a) or hydrophilic foam body and can being yet need material that hydrophilic is handled, the material on for example possess hydrophilic property surface own.These examples of material comprise fiber or the foaming body of being made by cellulose, polyvinyl alcohol and acrylic resin, for example rayon fibers, vinal, cellulose sponge and polyvinylalcohol sponge.
The centrifugal water maintenance dose is that 0.7g/g or lower hydrophilic fibre or hydrophilic foam body can be used as component (a) behind equilibrium water absorption and the swelling, it comprises the cross-linked cellulose fibres with the crosslinked cellulosic molecule of intermolecular or intramolecularly and suitable crosslinking agents, and the viscose silk a chain for binding criminals with better degree of crystallinity is entangled fiber.Consider that from economic aspect cross-linked cellulose fibres are preferred.Hydrophilic fibre or hydrophilic foam body that the centrifugal water maintenance dose surpasses 0.7g/g will absorb and keep body fluid, and give out stench, elastic modelling quantity when perhaps reducing Liquid Absorption remains in the gap between fiber or the space liquid, causes stink beastly.Usually the centrifugal water maintenance dose that has about 1-2g/g as the chemical pulp of needlebush paper pulp and leaf wood paper pulp.Measuring the method for centrifugal water maintenance dose will be described among the embodiment afterwards.
The cross-linking agent that is used for cross-linked cellulose preferably includes N-methylol compound such as dimethylol ethylene urea and dihydroxymethyl hydroxy ethylene urea, polycarboxylic acid such as citric acid, tricarballylic acid and alkane fourth tetracarboxylic acid, poly epihydric alcohol ether compound and dialdehyde compounds.
For making stink control sheet material have enough intensity and can effectively liquid being spread to the stink controlling agent, the ratio of component (a) is 20-80 weight % in the stink control sheet material 9, is preferably 40-60 weight %.
Be meant the malodorous material of common control at this " stink controlling agent " as component (b), comprise that (1) can absorb malodorous odor absorbent or stink distintegrant, (2) prevent the deodorant that stench develops, and (3) hide malodorous mask agent (aromatic) with aromatic.
The stink controlling agent of type (2) comprises the chelating agen that comprises metal ion, and described metal ion for example is silver, zinc or copper ion.It comprises that also load has the material of above-mentioned metal ion, for example the zeolite of metal ion dipping.
The stink controlling agent of type (1) comprises that (i) is basic person with physisorption, for example neutral active carbon, the fibrosis carbon adsorbent, clay mineral is (as zeolite, amorphous silica and bentonite), activated alumina and acid clay, (ii) act as basic person with chemolysis, as acid, alkali, Oxidizing and Reducing Agents, (iii) physics and chemical deodorizing agent, as the active carbon of using acid or alkali steeping and the zeolite that floods with plants essential oil, and (iv) iron-phthalocyanine derivant, desulfurization salt (as zinc oxide), and ferrum (II) chemical compound, the mixture of L-ascorbic acid and vitriol.
The stink controlling agent of type (3), be aromatic, comprise that (i) alcohol is the glucosides of spice or the glucosides that comprises monosaccharide, oligosaccharide or polysaccharide, (ii) carboxylic acid be spice (benzoic acid, cinnamic acid) single, two or triglyceride, and (iii) alcohol is that spice, carboxylic acid are that spice or amine are the amino acid derivativges or the peptide derivant of spice (for example indole and smelly excretin).
The content of stink controlling agent is preferably 5-80 weight %, particularly 20-60 weight % in the stink control sheet material 9.When this content, can bring into play effective stink control ability, prevent that the stink controlling agent from coming off, and stably make stink control volume 9 have enough intensity.
Also strengthen the stink control action in the component (a) thus for preventing that reliably liquid from remaining in, stink control sheet material 9 preferably further comprises super-absorbent polymer.In the case, stink control sheet material 9 preferably comprises 10-60 weight %, the particularly super-absorbent polymer of 20-50 weight %.
If stink control sheet material 9 comprises super-absorbent polymer, then wish the stink controlling agent is bonded on the component (a) securely by super-absorbent polymer, can prevent that like this it from coming off.For example, super-absorbent polymer particles is dispersed on the moistening component (a),, can realizes above-mentioned stink controlling agent bonding thus then in swelling and have on the polymer beads of viscosity and disperse the stink controlling agent.
Control the intensity of sheet material 9 or guarantee the stationarity of stink controlling agent on stink control sheet material 9 for strengthening stink, stink control sheet material 9 can comprise binding agent.Useful binding agent comprises the synthetic fibers of hotmelt fiber such as polyethylene, polypropylene, polyester etc., polyethylene and polyacrylic conjugate fibre, and the conjugate fibre of polyethylene and polyester; Hot water soluble viscous fiber is as vinal; And papermaking adjuvant such as carboxymethyl cellulose and dialdehyde starch.The preferred use amount of binding agent is the 0.1-30%, particularly 0.5-10% of stink control sheet material 9 weight.
For bringing into play the stink control action of stink controlling agent effectively, the liquid scattering nature that improves stink control sheet material 9 also is desirable.Particularly, wish that the Klemm absorption of water of stink control sheet material 9 in the time of 1 minute is 40mm or higher, particularly 50mm or higher, it is measured with normal saline according to JIS P8141.These scattering natures can obtain by suitably selecting hydrophilic fibre.For example,, reduce fibre diameter, can obtain desirable scattering nature thus to increase fiber specific surface area using by making when meeting the hydrophilic fibre that the non-swelling synthetic fibers possess hydrophilic property of water makes.Preferred fiber diameter is 20 μ m or littler, particularly 0.1-10 μ m.The molten non-woven fabrics that blows that the stink control sheet material that comprises the fiber with these average diameters usually can be for example has a very thin fiber by use makes as basic material.
Using the centrifugal water maintenance dose as 0.7g/g or lower hydrophilic fibre during as component (a), for obtaining desirable scattering nature, the preferred stink of suitably regulating is controlled the density of sheet material or mix a spot of superfine paper pulp fiber with bigger serface in stink control sheet material, and described paper pulp fiber for example is a leaf wood paper pulp.
For obtaining enough stink control actions, prevent that stink from distributing, make wearer feel comfortable, the part by weight of stink control sheet material 9 in absorber 4 is preferably 10-100 weight %, particularly 20-100 weight %.Be stink control ability that obtains height and abundant intensity and the desirable absorbent properties that keep absorber 4 simultaneously, component (a) and (b) content in whole absorber 4 be preferably 5-70 weight %, particularly 10-60 weight % respectively, 5-70 weight %, particularly 10-50 weight %.
Though stink control sheet material 9 has covered the area (100%) of whole backsheet 3 sides of absorber 4 in embodiment as shown in Figure 1, if but the setting of stink control sheet material 9 only covers whole backsheet 3 lateral areas at least 50% of absorber 4, particularly 70% or more, can prevent fully that still the stink that produced from being overflowed by backsheet 3, and keep the poisture-penetrability of backsheet 3 simultaneously.The mode that the stink control volume is set does not have concrete restriction.For example, single stink control sheet material can be set, perhaps a plurality of stink control bands be set with certain interval.
As mentioned above contact adhesive 6 is coated on the outer surface of backsheet 3.For sanitary towel 1 is fixed on the underwear, and guarantee the water vapo(u)r transmission of backsheet 3 simultaneously, calculate with the area that does not comprise the backsheet 3 of ledge on every side, the surface covered ratio of binding agent 6 is preferably 5-80%, still preferred 8-60%, preferred especially 10-50%.
In the embodiment depicted in fig. 1, stink control sheet material 9 is arranged in the absorber 4 in the position near top layer material 2.This structure can followingly change: be arranged in the absorber 4 stink being controlled sheet material 9 near the position of top layer material 2.These change structure and see shown in Fig. 2 A, wherein, absorber 4 is made of another stink control sheet material 9 that absorbs tank body 8, is arranged on stink control sheet material 9, the covering absorption tank body 8 that absorbs on the tank body 8 and goes up the absorbent sheet 10 of stink control sheet material 9 and be arranged under the absorbent sheet 10.In this embodiment, last stink control sheet material 9 is arranged near on top layer material 2 sides.At the whole area (100%) that does not need to cover this side near stink control sheet material 9 on top layer material 2 sides.If last stink control sheet material 9 only cover absorber 4 the upside area at least 50%, can prevent effectively that also stink is full of internal medium.
In the embodiment depicted in fig. 1, stink control sheet material 9 covers upper and lower surface and the dual-side that absorbs tank body 8, and constitutes absorber 4.This structure can followingly change: in the embodiment shown in Fig. 2 A, stink control sheet material 9 only covers the upper and lower surface that absorbs tank body 8, perhaps shown in Fig. 2 B, absorber 4 does not have the tank body 8 of absorption, and only is made of the stink control sheet material 9 that is folded into sealing C shape.
The present invention is not limited in above-mentioned embodiment.Absorbent commodity of the present invention not only can be used for sanitary towel, also can be used for the pad of disposable diaper, incontinence pad, pantiliner, pet feeding etc.
Embodiment
Below with reference to embodiment the present invention is described more specifically.Following examples only are to be used to illustrate the present invention, rather than limit it.Before describing, preparation is used for the stink control sheet material (perhaps contrasting the absorbent sheet of usefulness) of embodiment and Comparative Examples.Be prepared as follows stink control sheet material A-C (perhaps contrasting the absorbent sheet D of usefulness).Except as otherwise noted, all part, percent and ratios all are to calculate by weight.
Preparation stink control sheet material A:
In water, disperse and mix the crosslinked paper pulp (trade name: HBA that 95 parts of centrifugal water maintenance doses are 0.3g/g, provide by Weyerhauser Paper Co.) and 5 parts of fineness be that 1 dawn, fibre length are vinal (the binding agent) (trade name: Fibribond of 3mm, provide by three prosperous Co., Ltd.), have the papermaking pulp-liquor of predetermined concentration with preparation.This serosity is sent in the papermaking part of wet papermaking machine, and to make dry Unit Weight be 30g/m
2Net, this net can be used as lower floor's fibre sheet material.Make this lower floor's fibre sheet material dehydration in exhaust chamber, water content is reduced to 60%, disperse super-absorbent polymer (trade name: AquaricCAW-4S is obtained from Nippon Shokubai Co., Ltd) then thereon almost evenly, the Unit Weight of its distribution is 30g/m
2Then disperse the activated carbon granule (CW480B is obtained from Futamura Kagaku Kabushiki Kais) as the stink controlling agent thereon almost evenly, the Unit Weight of its distribution is 30g/m
2Stacking the Unit Weight of being made by same combination in advance on super-absorbent polymer and active carbon is 40g/m
2Absorbent sheet as lower floor's fibre sheet material.In 130 ℃ of heating down, layered web is become one in the Yankee drying machine, obtain stink control sheet material A, portion has super-absorbent polymer and the active carbon to disperse admixture to set within it.Can confirm that activated carbon granule is bonded on the crosslinked paper pulp securely by super-absorbent polymer particles.
Preparation stink control sheet material B:
Prepare stink control sheet material B according to the mode identical with stink control sheet material A, but dispersible granule shaped activated carbon (CW480B, be obtained from Futamura Kagaku Kabushiki Kais) and bentonite (trade name: Benclay MK-101, be obtained from marshy land KCC) as the stink controlling agent, its amount is respectively 30g/m
2And 20g/m
2In the stink control sheet material B of gained, find that active carbon and bentonite are bonded on the crosslinked paper pulp securely by super-absorbent polymer particles.
Preparation stink control sheet material C:
Disperseing the centrifugal water maintenance dose in water is the needlebush chemical pulp (trade name: Skeena Prime is obtained from Skeena Cellulose Co.) of 1.3g/g, and this serosity being made Unit Weight then is 40g/m
2Absorption paper.With spiral form hot melt application on this absorption paper, its amount is 10g/m
2, disperse activated carbon granule (CW480B is obtained from Futamura Kagaku Kabushiki Kais) and bentonite (trade name: BenclayMK-101 is obtained from marshy land KCC) then thereon almost evenly as the stink controlling agent, their amount is shown in Table 1.(Unit Weight is 40g/m to overlapping thereon identical absorption paper
2), make whole stink control sheet material C.
Preparation absorbent sheet D (contrast):
Disperseing the centrifugal water maintenance dose in water is the needlebush chemical pulp (trade name: Skeena Prime is obtained from Skeena Cellulose Co.) of 1.3g/g, and this serosity being made Unit Weight then is 40g/m
2Absorbent sheet D.
Measure the centrifugal water maintenance dose of the fiber that constitutes the stink control sheet material A-C that as above makes and absorbent sheet D and the Klemm absorption of water of these sheet materials according to following method.Gained the results are shown in Table 1.
(1) centrifugal water maintenance dose
Accurately the hydrophilic material sample of weighing 1g as fiber or foaming body, places them in the beaker that comprises the 500ml ion exchange water, leaves standstill then 30 minutes.From water, take out sample, put into the bag of making by non-woven fabrics or nylon wire, but described bag can not make sample spill.(centrifugal acceleration: 895G) centrifugal down described bag is 10 minutes in 2000rpm in centrifuge (trade name: H-130C is made by homemade heart device far away Co., Ltd.).The weighing sample obtains water maintenance dose (centrifugal water maintenance dose) after centrifugal according to following equation:
Centrifugal water maintenance dose (g/g)=[initial weight of the example weight-sample after centrifugal (1g)]/initial sample weight (1g)
(2) Klemm absorption of water
According to the Klemm absorption of water of defined terms among the JIS P8141 and measurement device stink control sheet material A-C and absorbent sheet D, but use normal saline as test liquid.Sample is that 15mm is wide and 200mm long, and its length is equivalent to the longitudinal direction of absorbent commodity.In normal saline, soak after 1 minute, measure the suction head that begins from liquid level.Repeated measure 10 times obtains the meansigma methods in 1 minute.
Be prepared as follows the backsheet A-D that is used for embodiment and Comparative Examples.The Unit Weight of these backsheet is shown in Table 2.
Preparation backsheet A:
Mixed with 45/55 is also mediated polyethylene and calcium carbonate, then the molding film forming.This film of uniaxial tension obtains the poisture-penetrability film.
Preparation backsheet B:
With the spiral form hot melt application, its amount is 3g/m on the surface of backsheet A
2, the Unit Weight that bonds thereon then is 12g/m
2Polypropylene spun-bonded non-woven fabrics, make compound poisture-penetrability sheet material.
Preparation backsheet C:
At a pair of Unit Weight is 15g/m
2Polypropylene spun-bonded non-woven fabrics in to sandwich Unit Weight be 10g/m
2The molten non-woven fabrics that blows.Above-mentioned three-layer tablet material by passing through in the hot-rolling, is obtained whole compound poisture-penetrability sheet material.
Preparation backsheet D:
The preparation Unit Weight is 40g/m
2Polyethylene sheets.
Moisture permeability and the air permeability of following measurement backsheet A-D.Gained the results are shown in Table shown in 2.
(3) moisture permeability
Measure according to JIS Z0208 (agar diffusion method).Use steam permeability tester (the L80-4000 type is made by eight continent trade Co., Ltd.) according to the indication of handbook.By downcutting the sample that is about 120mm, wide about 120mm on each backsheet.Sample is fixed on the maintenance paper.Should keep paper to be fixed on the sample card then.Each sheet material carries out 3 times to be measured, to obtain the meansigma methods of moisture permeability.
(4) air permeability
(GURLEY DENSOMETER, Industrial Co., Ltd makes by Xiong Gu reason machine) measures according to JIS P8117 (the air permeability laboratory method of paper and paper mold) with the Gurley densometer.Promote the inner cylinder of Gurley densometer, and fix with holder.One folded 32 backsheet are cut into 50 * 50mm and clamp, remove holder then.Measuring the 300ml air with stopwatch passes through the needed time (second) from backsheet.Each sample carries out 3 times to be measured, and obtaining meansigma methods, and is worth following calculating air permeability by this.
The time (second) that air permeability (ml/ second)=300ml/ measures
Embodiment 1
The sanitary towel of preparation shown in Fig. 2 B.For 150mm, long stink control sheet material A for 175mm are folded into the C shape of sealing, make absorbed layer 4 with wide thus.The backsheet A (application of anti-leakage layers) wide with 100mm, that 205mm is long covers the non-contact skin side of absorbed layer 4, and porous polyethylene membrane (liquid permeability top layer material 2) then that 100mm is wide, that 205mm is long overlays on the contact skin side of absorbed layer.By heat-sealing the vertical end on application of anti-leakage layers and top layer and the ledge of side are bonded together mutually.Hot melt application 6 on backsheet A, and its area discharges releasing sheet 7 thereon then than for about 40%, makes the sanitary towel of wide 75mm, long 205mm thus.
Embodiment 2
The sanitary towel of preparation shown in Fig. 2 A.With chemical pulp (trade name: NB-420 is provided by Weyerhauser Paper Co.) air lay is that Unit Weight is 150g/m
2Net, its width is 70mm, length is 175mm.At this online super-absorbent polymer (trade name: Aquaric CAW-4S is obtained from Nippon Shokubai Co., Ltd) that disperses, its amount is 30g/m
2On super-absorbent polymer/pulp mat, stack the stink control sheet material B that 70mm is wide, 175mm is long.This stratiform thing is wrapped in the absorption paper of wet treatment of wide 115mm, long 175mm, the Unit Weight of this absorption paper is 18g/m
2, be to be that the needlebush chemical pulp (trade name: Skeena is obtained from Skeena Cellulose Co.) of 1.3g/g is made by the centrifugal water maintenance dose.In that the stink control sheet material B of wide 70mm, long 175mm is set, make absorber 4 thus under the stratiform thing of parcel.Prepare sanitary towel according to the mode identical by the absorber that uses gained with embodiment 1.
Embodiment 3
Preparation sanitary towel as shown in Figure 1.With chemical pulp (trade name: NB-420 is provided by Weyerhauser Paper Co.) air lay is that Unit Weight is 150g/m
2Net, its width is 70mm, length is 175mm.At this online super-absorbent polymer (trade name: Aquaric CAW-4S is obtained from Nippon Shokubai Co., Ltd) that disperses, its amount is 30g/m
2Wide with 150mm, that 175mm is long stink control sheet material A parcel super-absorbent polymer/pulp mat is made absorber 4.Stack the backsheet B of wide 100mm, long 205mm thereon, its non-woven fabrics is contacted with absorber 4.Prepare sanitary towel according to the mode identical by the absorber that uses gained with embodiment 1.
Prepare sanitary towel according to the mode identical, but replace backsheet A with backsheet C with embodiment 2.
Comparative Examples 1
With chemical pulp (trade name: NB-420 is provided by Weyerhauser Paper Co.) air lay is that Unit Weight is 150g/m
2Net, its width is 70mm, length is 175mm.At this online super-absorbent polymer (trade name: Aquaric CAW-4S is obtained from Nippon Shokubai Co., Ltd) that disperses, its amount is 30g/m
2Place the stink control sheet material C of wide 70mm, long 175mm on super-absorbent polymer/pulp mat, then whole stratiform thing is wrapped in the moistening absorption paper that 115mm is wide, 175mm is long, the Unit Weight of this absorption paper is 18g/m
2, be to be that the needlebush chemical pulp (trade name: SkeenaPrima is obtained from Skeena Cellulose Co.) of 1.3g/g is made by the centrifugal water maintenance dose, make absorber thus.Prepare sanitary towel according to the mode identical by the absorber that uses gained with embodiment 1.
Comparative Examples 2
Prepare sanitary towel according to the mode identical, but replace stink control sheet material A with absorbent sheet D with embodiment 3, and with backsheet C replacement backsheet B.
Comparative Examples 3
With chemical pulp (trade name: NB-420 is provided by Weyerhauser Paper Co.) air lay is that Unit Weight is 150g/m
2Net, its width is 70mm, length is 175mm.At this online super-absorbent polymer (trade name: Aquaric CAW-4S is obtained from Nippon Shokubai Co., Ltd) that disperses, its amount is 30g/m
2Place the stink control sheet material B of wide 70mm, long 175mm under super-absorbent polymer/pulp mat, then whole stratiform thing is wrapped in the moistening absorption paper that 115mm is wide, 175mm is long, the Unit Weight of this absorption paper is 18g/m
2, be to be that needlebush chemical pulp (trade name: SkeenaPrima the is obtained from Skeena Cellulose Co.) wet method of 1.3g/g is made by the centrifugal water maintenance dose, make absorber thus.Prepare sanitary towel according to the mode identical, but use the absorber of gained with embodiment 1, and with backsheet D replacement backsheet A.
Comfortableness when the stink control performance of the sanitary towel that makes in following embodiment of being evaluated at and the Comparative Examples and actual the use.Gained the results are shown in Table 3.
(1) to the assessment (other people are imperceptible) of stink control performance
Be applied to respectively in female buttocks and the lower limb fork motion model by the sanitary towel that uses sanitation underwear in embodiment and Comparative Examples, to make.This model be with 100 the step/minute speed (walking speed that is equivalent to 50m/min) carry out walking movement.When making this model keep motor pattern, in sanitary towel, inject the solution of 5ml, this solution is the solution of 100 μ l diethylamine (production number: 047-01773 is made by Wako Pure Chemical Industries, Ltd.) in the 5ml normal saline, continues walking movement 30 minutes with identical speed then.Select 25 bit test persons at random, and require them to hear the abnormal smells from the patient of the specimen on the model that is worn on sanitation underwear apart from about 10cm external nose, and abnormal smells from the patient is marked according to following standard.With 25 bit test persons' mark addition, and average.Mark is more little, and stink is low more, shows high more stink control action.Evaluation criteria:
1-does not discover stink
2-discovers slight stink, but not horrible
3-perceives slight stink beastly
4-perceives stink beastly
The assessment of the comfortableness when (2) reality being used
Overall comfort when checking actual use, comprise the sensation of user to stink, select 25 women testers at random, and require them to use the sanitary towel (every kind of 2 sanitary towels) that in embodiment and Comparative Examples, makes 3 hours, and damp and abnormal smells from the patient are marked according to following standard.With 25 bit test persons' mark addition, and average.Mark is more little, and is comfortable more during use.
The evaluation criteria of damp:
It is moist that 1-does not feel
2-has slight damp, but not horrible
3-has damp
4-makes us uncomfortable damp
Use or during exchange to the evaluation criteria of abnormal smells from the patient
1-does not discover stink
2-discovers slight stink, but not horrible
3-perceives slight stink beastly
4-perceives stink beastly
Table 1
| Stink control sheet material | A | B | C | Absorbent sheet D | |
| Unit Weight (g/m 2) | 130 | 150 | 110 | 40 | |
| Hydrophilic fibre | Centrifugal water maintenance dose (g/g) | 0.3 | 0.3 | 1.3 | 1.3 |
| Fibrous | Crosslinked paper pulp | Crosslinked paper pulp | Chemical pulp | Chemical pulp | |
| Ratio (wt%) in the stink control sheet material | 51 | 44 | 73 | 100 | |
| The stink controlling agent | Form | Active carbon | Active carbon/bentonite | Active carbon/bentonite | Do not have |
| Amount (g/m 2) | 30 | 30/20 | 10/10 | - | |
| Ratio (wt%) in the stink control sheet material | 23 | 33 | 18 | - | |
| Super-absorbent polymer (g/m 2) | 30 | 30 | Do not have | Do not have | |
| Klemm absorption of water (mm) | 55 | 53 | 33 | 31 | |
Table 2
| Backsheet | Unit Weight (g/m 2) | Moisture permeability (g/100cm 2/hr) | Air permeability (ml/ second) |
| A | 40 | 1.8 | ≤1 |
| B | 52 | 1.8 | ≤1 |
| C | 40 | 2.1 | 86 |
| D | 40 | 0 | ≤1 |
Table 3
| Stink control sheet material | Backsheet | The stink control performance | Comfortableness during actual the use | ||
| Damp | Stink | ||||
| Embodiment 1 | A | A | 1.3 | 1.2 | 1.4 |
| Embodiment 2 | B | A | 1.6 | 1.3 | 1.3 |
| Embodiment 3 | A | B | 1.5 | 1.3 | 1.3 |
| Embodiment 4 | B | C | 2.2 | 1.4 | 2 |
| Comparative Examples 1 | C | C | 3.1 | 1.2 | 3 |
| Comparative Examples 2 | Absorbent sheet D | C | 3.9 | 1.3 | 2.9 |
| Comparative Examples 3 | B | D | 1.8 | 3.3 | 3.2 |
From the result of table 3 as can be seen, the sanitary towel of the embodiment 1-4 according to the present invention has the stink control action of height, stink is controlled at wearer or level that other people can feel or makes under the level that they dislike.Comparative Examples 1 and 2 sanitary towel then distribute stink beastly.This result also confirms, if the stink of sanitary towel control sheet material is arranged in the absorber in the position near backsheet, is comfortable for use then.
In the sanitary towel of embodiment 1-3, used to have the backsheet that controlled air permeability and moisture permeability increase, proved that they can suppress the effusion of stink, and be comfortable especially for use.
As in the sanitary towel of Comparative Examples 3, when using non-poisture-penetrability backsheet, though it is lighter that stink leaks, but bring damp beastly to wearer, and compare with those sanitary towels with poisture-penetrability, the stink that wearer is felt has reached degree beastly greatly, and overall comfort is relatively poor.
As mentioned above, the invention provides the absorbent commodity article that the stink that is distributed by absorb body fluids is had deodorization and has poisture-penetrability simultaneously.
Though described the present invention as mentioned above, be apparent that the present invention still can have many improvement.These variations should not be regarded as having departed from essence of the present invention and spirit, and all these variations apparent to those skilled in the art should be included within the scope of following claims.
Claims (5)
1, a kind of absorbent commodity, it comprise liquid permeability top layer, non-liquid permeability application of anti-leakage layers and be arranged on the top layer and application of anti-leakage layers between liquid-keeping absorbed layer, wherein,
Described application of anti-leakage layers has water vapo(u)r transmission at least, and described absorbed layer has the stink control sheet material that comprises the stink controlling agent, described stink control sheet material is arranged on the position of close described application of anti-leakage layers, and account for towards the described absorbed layer area of described application of anti-leakage layers 50% or higher, and
Described application of anti-leakage layers has 0.7g/100cm
2/ hr or higher moisture permeability, it is measured according to JISZ0208, also has 30ml/ second or lower air permeability, and it is measured according to JIS P8117.
2, absorbent commodity as claimed in claim 1, wherein,
Described stink control sheet material comprises non-swelling hydrophilic fibre of chance water or the hydrophilic foam body of (a) 20-80 weight % or the equilibrium water absorbs and swelling after the centrifugal water maintenance dose be 0.7g/g or lower hydrophilic fibre or hydrophilic foam body and (b) the stink controlling agent of 5-80 weight %, and the Klemm absorption of water of described stink control sheet material in the time of 1 minute be 40mm or higher, and this absorption of water is measured according to JIS P 8141 usefulness normal saline.
3, absorbent commodity as claimed in claim 2, wherein, described stink control sheet material also comprises the super-absorbent polymer of 10-60 weight %.
4, absorbent commodity as claimed in claim 2, wherein, described absorbed layer comprises the component (a) of 5-70 weight % and the component (b) of 5-70 weight %.
5, absorbent commodity as claimed in claim 3, wherein, component (b) is to be bonded in securely on the component (a) by described super-absorbent polymer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP164422/1999 | 1999-06-10 | ||
| JP16442299A JP3753560B2 (en) | 1999-06-10 | 1999-06-10 | Absorbent articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1277010A CN1277010A (en) | 2000-12-20 |
| CN1226976C true CN1226976C (en) | 2005-11-16 |
Family
ID=15792858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00108066 Expired - Fee Related CN1226976C (en) | 1999-06-10 | 2000-06-09 | Absorbing article |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3753560B2 (en) |
| CN (1) | CN1226976C (en) |
| TW (1) | TW580909U (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4548956B2 (en) * | 2001-03-15 | 2010-09-22 | 花王株式会社 | Absorbent articles |
| JP4782645B2 (en) * | 2006-08-22 | 2011-09-28 | 株式会社リブドゥコーポレーション | Absorbent articles |
| EP2301498B1 (en) | 2008-06-30 | 2017-09-20 | Daio Paper Corporation | Disposable diaper |
| JP5420952B2 (en) * | 2009-03-31 | 2014-02-19 | 大王製紙株式会社 | Absorbent articles |
| JP6086398B2 (en) | 2014-09-26 | 2017-03-01 | 大王製紙株式会社 | Absorbent articles |
| JP6009115B1 (en) | 2016-05-13 | 2016-10-19 | ユニ・チャーム株式会社 | Pet bed |
| JP2019170546A (en) * | 2018-03-27 | 2019-10-10 | 王子ホールディングス株式会社 | Absorbent article |
| JP6488042B1 (en) | 2018-03-29 | 2019-03-20 | 大王製紙株式会社 | Absorbent articles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080450A (en) * | 1983-10-07 | 1985-05-08 | 三菱油化株式会社 | Production of air permeable resin film used as liquid leak preventing material of sanitary napkin |
| JPH01144013U (en) * | 1988-03-25 | 1989-10-03 | ||
| JPH05212094A (en) * | 1992-02-04 | 1993-08-24 | Toray Ind Inc | Sanitary articles |
| JPH05277148A (en) * | 1992-03-31 | 1993-10-26 | Oomiya Yakugyo Kk | Deodorizing type physiological napkin and its production |
| JPH06181949A (en) * | 1992-12-21 | 1994-07-05 | Mitsubishi Kasei Corp | Sanitary article |
| US5429628A (en) * | 1993-03-31 | 1995-07-04 | The Procter & Gamble Company | Articles containing small particle size cyclodextrin for odor control |
| EP0894502A1 (en) * | 1997-07-30 | 1999-02-03 | The Procter & Gamble Company | Cyclodextrin-containing odour control material for absorbent articles |
| JP3853530B2 (en) * | 1999-01-20 | 2006-12-06 | ユニ・チャーム株式会社 | Body fluid absorbent article |
-
1999
- 1999-06-10 JP JP16442299A patent/JP3753560B2/en not_active Expired - Fee Related
-
2000
- 2000-06-09 TW TW92215504U patent/TW580909U/en unknown
- 2000-06-09 CN CN 00108066 patent/CN1226976C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000350745A (en) | 2000-12-19 |
| JP3753560B2 (en) | 2006-03-08 |
| TW580909U (en) | 2004-03-21 |
| CN1277010A (en) | 2000-12-20 |
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