CN1689540B - Absorptive articles - Google Patents

Absorptive articles Download PDF

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Publication number
CN1689540B
CN1689540B CN2005100674999A CN200510067499A CN1689540B CN 1689540 B CN1689540 B CN 1689540B CN 2005100674999 A CN2005100674999 A CN 2005100674999A CN 200510067499 A CN200510067499 A CN 200510067499A CN 1689540 B CN1689540 B CN 1689540B
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China
Prior art keywords
absorber
surficial sheets
opposite face
pressure contact
contact portion
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CN2005100674999A
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CN1689540A (en
Inventor
丰岛泰生
根本研
广濑祐一
坂本纪子
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Kao Corp
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Kao Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0116Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions

Abstract

Many dot-like recessed parts 7 are formed on a back surface sheet counter surface and a density structure is formed over the surface direction of an absorbent 4. Also, in an excretion part counter area A on a surface sheet counter surface, a plurality of press fixation parts 9 are formed. The absorbent 4 and a surface sheet 2 are tightly adhered in at least the excretion counter area of the surface sheet counter surface. The surface sheet 2 has many projection parts 11 on the surface side and also it is preferable that the back surface of the surface sheet 2 is flatter than the surface. It is also preferable that the ratio of the total sum of the area of the recessed parts 7 to the back surface sheet counter surface is higher than the ratio of the total sum of the area of the press fixation parts 9 to the surface sheet counter surface.

Description

Absorbent commodity
Technical field
The present invention relates to absorbent commodities such as sanitary towel, incontinence pad, textile sheet material, disposable diaper.
Background technology
Known a kind of absorbent commodity of on the single or double of absorber, implementing embossing processing.For example, having proposed a kind of is purpose with anti-wet (wetback) of the diffusibility, the minimizing that improve liquid, utilize embossing processing,, formed the absorbent commodity (with reference to Japanese kokai publication sho 58-65003 communique) of compression section and non-compression section from back-sheet side or both sides compressed absorbent.
But in above-mentioned absorbent commodity, not talkative liquid is very fast to the transitivity of absorber, and surficial sheets is moistening in having drained the state behind the liquid, produces the sensation with the skin stickness.In addition, because embossing processing is implemented in the whole zone of the surficial sheets opposite side of absorber, therefore, for the rigidity grow of absorbent commodity integrally bending, influence the property next to the shin with health, be easy to generate leakage.
Summary of the invention
The invention provides a kind of absorbent commodity, this absorber of back-sheet opposite face one side pressure flower processing from absorber, on this back-sheet opposite face, form many recesses, thereby on whole direction of this absorber, form the density structure, and, from surficial sheets opposite face one side of absorber, this absorber with the embossed processing of surficial sheets, thereby the excretory portion opposed area in this surficial sheets opposite face forms a plurality of pressure contact portions.In the opposed area of excretory portion at least of above-mentioned surficial sheets opposite face, above-mentioned absorber and above-mentioned surficial sheets are close to.The area summation of recess is 1~50% with respect to the ratio of the area of the back-sheet opposite face of absorber, and the spacing between this recess of length direction is 3~10mm, and the spacing between this recess of width is 3~10mm.
Description of drawings
Fig. 1 is the axonometric chart of sanitary towel that an embodiment of absorbent commodity of the present invention is shown.
Fig. 2 is the II-II line profile among Fig. 1.
The specific embodiment
Below, with reference to accompanying drawing, the present invention is described based on its most preferred embodiment.The axonometric chart of sanitary towel of an embodiment of absorbent commodity of the present invention has been shown among Fig. 1.Fig. 2 is the II-II line profile among Fig. 1.
Sanitary towel 1 shown in Fig. 1 and Fig. 2 has the surficial sheets 2 of liquid permeability, the back-sheet 3 of opaque liquid and the absorber 4 of the liquid retainability between these two sheet materials, in fact forms microscler.Absorber 4 is clamped and fixed between surficial sheets 2 and the back-sheet 3.Surficial sheets 2 forms when wearing towards the skin contact surface of wearer's skin.Surficial sheets 2 in the present embodiment is connected with sidepiece sheet material 5 respectively in both sides of the edge portion.Sidepiece sheet material 5 and back-sheet 3 from the both sides of the edge of the length direction of absorber 4 foreign side to width extend, in its extension, be bonded with each other and form flank 50.In addition, surficial sheets 2 and back-sheet 3 are extended from the length direction two ends of absorber 4 to length direction foreign side, are bonded with each other in its extension and form end seal part 6.As back-sheet 3 and sidepiece sheet material 5, particular restriction can not used in this technical field normally used.About absorber 4 too, can use the tired folded body (Plot of for example paper pulp and superabsorbent polymer slim).The back can be described in detail about surficial sheets 2.
As shown in Figure 2, in the sanitary towel 1 of present embodiment, form many point-like recesses 7 on the relative side of the back-sheet in absorber 4.Point-like recess 7 is preferably disposed on the opposed area of excretory portion at least of the back-sheet opposite face in the absorber 4, in the present embodiment, is formed on the whole zone of back-sheet opposite face.Form point-like recess 7 by this absorber 4 of the flower of back-sheet opposite face one side pressure from absorber 4 processing.But, except the opposed zone of excretory portion described later, absorber 4 is not implemented embossing processing from surficial sheets opposite face one side.Its result, the back-sheet opposite face of absorber 4 just becomes male and fomale(M﹠F), and the surficial sheets opposite face becomes tabular surface in fact.But, the condition of the embossing processing when forming point-like recess 7, sometimes the surficial sheets opposite face with point-like recess 7 corresponding positions on a little hollow is arranged slightly.
Have again, only absorber 4 is used to form the embossing processing of point-like recess 7.That is not to form point-like recess 7, with surficial sheets 2 and back-sheet 3 embossing processing absorber 4.
In addition, process absorber 4 by spending, thereby form the density structure in whole the direction in absorber 4 upper edges, on its whole zone from one side pressure of back-sheet opposite face.Specifically, form the density structure that constitutes by compressed tight section 4a and the sparse part 4b that becomes non-compressed state.Tight section 4a is positioned at the bottom of point-like recess 7.
By on absorber 4, forming the density structure, can give absorber 4 two functions.The firstth, the diffusibility enlarged functional of liquid by there being tight section 4a.In tight section 4a, capillary force action is very strong, and liquid spreads to the in-plane of absorber 4 apace.The secondth, the permeability enlarged functional of liquid by there being sparse part 4b.Because sparse part 4b has the space that liquid passes through easily, therefore, is seen through to the thickness direction of absorber 4 apace by excretory liquid.According to these two functions, can realize seeing through and diffusion of liquid fast, in absorber 4, liquid can effectively utilize the absorbability of absorber integral body up hill and dale fully to the in-plane diffusion.Its result does not waste absorptive capacity, can reduce the use amount of paper pulp or superabsorbent polymer.This is favourable from the viewpoint that the viewpoint and the carrying capacity of environment of economy alleviate.
By form the density structure on absorber 4, the conformality of absorber 4 increases, and carries out the additional effect that strenuous exercise, absorber 4 also are difficult to produce fold even also have wearer for example.
The area of point-like recess 7 is 0.5~15mm 2, 1~10mm particularly 2, this from so-called can design concerning liquid spread effective capillary force and not too high for the rigidity of the bending of sanitary towel's integral body, promptly, the wearer is not felt well and the viewpoint of overgrown insecurity best.Point-like recess 7 preferably aspect ratio approaches 1 the low shape of anisotropy.For example, can get circle or shapes such as polygon such as rectangle, triangle.The area summation of point-like recess 7 is 1~50% with respect to the ratio of the area of the back-sheet opposite face in the absorber 4 (below be called back-sheet opposite face lateral area rate), particularly 2~30%, this is from can be best absorber 4 forms the viewpoint of density structure of expectation.
Point-like recess 7 is 3~10mm in the spacing of the length direction of sanitary towel 1,3~7mm particularly,
In addition, spacing at the width of sanitary towel 1 is 3~10mm, 3~7mm particularly, this is best from following viewpoint, that is, have the space of spreading effective capillary force and easily saturating liquid for liquid concurrently, utilize this two functions, can realize that liquid sees through and diffusion fast, can effectively utilize the absorbability of absorber integral body up hill and dale.
As previously mentioned, because the back-sheet opposite face of absorber 4 is provided with point-like recess 7, therefore, on absorber 4, form the density structure, and the surficial sheets opposite face of absorber 4 becomes tabular surface in fact.Its result, absorber 4 increases with the compactness of surficial sheets 2, further speeds from the transfer of surficial sheets 2 to the liquid of absorber 4.From this viewpoint, preferably the back side of ground surface sheet material 2 (being the absorber opposite face) becomes smooth in fact as described later.
As shown in Figure 1, in sanitary towel 1, the many places in the width central part A of the excretory portion opposed area of its skin contact surface one side are formed with pressure contact portion 9.Make pressure contact portion 9 become the shape of short-term shape.Pressure contact portion 9 forms on the length direction of sanitary towel 1 and extends.Pressure contact portion 9 on the length direction of sanitary towel 1, forms discontinuously every predetermined space.In addition, on the width of sanitary towel 1, be formed with the pressure contact portion 9 of multiple row every predetermined space.
Compress integratedly with surficial sheets 2 and absorber 4 and form pressure contact portion 9.Thereby form pressure contact portion 9 with surficial sheets 2 embossed processing from surficial sheets opposite face one side, this absorber 4 of absorber 4.In pressure contact portion 9, push surficial sheets 2 by embossing pin (not having diagram), the integral body of the thickness direction of surficial sheets 2 is trapped in the inside of absorber 4, and, being absorbed in the position at this, surficial sheets 2 is engaged and is fixed on absorber 4.Therefore, surficial sheets 2 between pressure contact portion, is fixed on absorber 4 under the state of belt tension.By this tensile effect, even in wearing because the action of health and in sanitary towel 1, produce distortion etc., surficial sheets 2 also can be kept good compactness with absorber 4, is excreted to liquid on the surficial sheets 2 and is transferred to apace on the absorber 4 and is absorbed.Also can utilize these structural fibers thermal welding or binding agent bonding each other to carry out engaging of surficial sheets 2 and absorber 4.
Also can in pressure contact portion 9, alternately arrange high density/low-density portion.By like this, relax the rigidity of pressure contact portion 9, fit increases, and liquid introducing power increases, so effectively.
In addition, the outside in the zone that has formed pressure contact portion 9 forms the leakproof ditch around entire circumference ground, perhaps form successive leakproof ditch in the front and back or the left and right sides in this zone, locate pressure contact portion 9 by this leakproof ditch thus, therefore, surficial sheets 2 just further is adjacent to absorber 4.Its result has just promoted moving of body fluid, in addition, does not produce leakage.The back is at length narrated about this leakproof ditch.
Pressure contact portion 9 and point-like recess 7 Pareto diagram separately be not by particular determination.As shown in the figure, by arrange pressure contact portion 9 on the product length direction roughly longitudinally elongatedly, leak preventing effect just further improves.In addition, the nothing diagram, but by arrange pressure contact portion 9 on the product width direction roughly longitudinally elongatedly, product is just crooked easily, for the fit raising of health.Can arrange point-like recess 7 on first-class interval rule ground, the whole zone of absorber, also can at random arrange the length direction and the width of product.
The relative Pareto diagram of pressure contact portion 9 and point-like recess 7 is particular determination not, but preferably forms many recesses 7 especially on the back-sheet opposite face of the absorber below the pressure contact portion 94, forms the density structure on whole direction of absorber 4.Like this, just further promote the diffusibility of the liquid in the absorber 4.In addition, also further promote the permeability of the liquid in the absorber.
If as described later, surficial sheets 2 has retractility, and then the flexible one side of surficial sheets 2 one sides is integrated with absorber 4, therefore, just produces the joint of putting up to deep-seated more for the thickness direction of absorber 4.Therefore, surficial sheets 2 further increases with the compactness of absorber 4, and the liquid that is excreted on the surficial sheets 2 moves to absorber 4 quickly by pressure contact portion.In addition, because in pressure contact portion, surficial sheets 2 is difficult to break away from from absorber 4, therefore, the stability of structure that moves for health is also good.According to sanitary towel 1 of the present invention, utilize such effect, can prevent liquid residue and liquid flow on the surficial sheets, find excellent absorption performance and leakageresistance, and the comfortable adherent feeling of the moist feeling that can be reduced.
For the above-mentioned reasons, pressure contact portion 9 need be formed on the excretory portion opposed area of sanitary towel 1, but preferably only forms pressure contact portion 9 again on the excretory portion opposed area.If on the whole zone of sanitary towel 1, form pressure contact portion 9, uprise the fit that causes sanitary towel 1 with regard to rigidity and reduce owing to sanitary towel 1, in addition, be easy to generate leakage.
As shown in Figure 1, expectation pressure contact portion 9 extends on the length direction of sanitary towel 1.Like this, just induced by excretory liquid and flowed to the length direction of sanitary towel 1, prevented sidepiece leakage from sanitary towel 1 along pressure contact portion 9.In addition, the advantage of not damaging the flexible of sanitary towel's 1 width and improving fit is also arranged.The length of pressure contact portion 9 is 5~20mm preferably, and that good especially is 5~10mm.
The area of pressure contact portion 9 is 1~20mm 2, 5~10mm particularly 2, this from be excreted on the surficial sheets 2 liquid quickly to absorber 4 shift, surficial sheets 2 is difficult to from the isolating viewpoint of absorber best in addition.The area summation of pressure contact portion 9 is 0.01~2.0% for the ratio of the area of the surficial sheets opposite face of absorber 4 (below be called surficial sheets opposite face lateral area rate), 0.05~1.0% low value particularly, this is best from the too high viewpoint of the rigidity that prevents absorber 4.
Pressure contact portion 9 is 5~50mm in the spacing of the length direction of sanitary towel 1,5~30mm particularly, this from make easily sanitary towel's integrally bending, thus make easily the fit viewpoint of sanitary towel and health best.In addition, spacing at the width of sanitary towel 1 is 5~30mm, 5~20mm particularly, this from so-called surficial sheets 2 for absorber 4 be adjacent to well, by excretory liquid further apace to absorber 4 shift and do not produce make the inflexible viewpoint that the wearer do not feel well best.
In the sanitary towel 1 of present embodiment, back-sheet opposite face lateral area rate specific surface sheet material opposite face lateral area rate height.Like this, can improve the introducing of liquid fully.From this viewpoint, the value of back-sheet opposite face lateral area rate/surficial sheets opposite face lateral area rate preferably 2~900, good especially is 10~500.Have again, as previously mentioned about the value separately of back-sheet opposite face lateral area rate and surficial sheets opposite face lateral area rate.
Based on the reason same with above-mentioned area occupation ratio, preferably in the sanitary towel 1 of present embodiment, at its length direction and/or width, the spacing that is formed on 9 of pressure contact portions on the surficial sheets opposite face side is greater than the spacing that is formed on 7 of point-like recesses on the back-sheet opposite face side.
As shown in Figure 1, on the excretory portion opposed area in sanitary towel 1, be different from pressure contact portion 9 and be formed with leakproof ditch 10 in addition.Leakproof ditch 10 lays respectively at the both sides of the central part of the excretory portion opposed area that is formed with pressure contact portion 9, and surrounds the shape that pressure contact portion 9 ground form closure.Skin contact surface one side in sanitary towel 1, thus surficial sheets 2 engages formation leakproof ditch 10 continuously with absorber 4.With pressure contact portion 9 similarly, also utilize embossing to be processed to form leakproof ditch 10.
By forming leakproof ditch 10 in the sidepiece foreign side of pressure contact portion 9, surficial sheets 2 is just not only between pressure contact portion, and also the one side elongation simultaneously engages with absorber 4 between pressure contact portion 9 and leakproof ditch 10.Its result, not only between pressure contact portion, between pressure contact portion 9 and leakproof ditch 10, surficial sheets 2 also improves with the compactness of absorber 4, is excreted to liquid on the surficial sheets 2 and further transfers to apace on the absorber 4 and be absorbed.In order to make this effect further remarkable, in the manufacturing of sanitary towel 1, the preferably initial leakproof ditch 10 that forms earlier forms pressure contact portion afterwards.This be because, utilize this operation, the one side effectively surficial sheets 2 is applied tension force, the one side surficial sheets 2 is engaged with absorber 4.
The surficial sheets 2 of the sanitary towel 1 of present embodiment has many protuberances 11 in its face side.Protuberance 11 is surveyed on the whole zone on the surface of surficial sheets 2 and is formed island.Surficial sheets 2 is made of fibrous materials such as non-woven fabrics, is full of fiber in the protuberance 11.By forming many protuberances 11, just flow in the recess of 11 of protuberances easily by excretory liquid, liquid is promptly removed from the surface of surficial sheets 2.In addition, the compression of the thickness direction of surficial sheets 2 is restorative to uprise, and has good buffering sense.In addition, owing to reduce with the contact area of skin, therefore, prevent damp and hotly, dry feeling further increases.From these viewpoints, the height of protuberance 11 is 0.3~5mm preferably, and that good especially is 0.5~3mm.In addition, when overlooking surficial sheets 1, the area of protuberance 11 is 0.5~10mm preferably 2, that good especially is 1~5mm 2
On the other hand, the back side specific surface of surficial sheets 2 is smooth.Specifically, the back side of surficial sheets 2 becomes smooth in fact, even perhaps do not becoming under the smooth situation, also specific surface sheet material 2 has an even surface.Like this, because the surficial sheets opposite face of absorber 4 is smooth, therefore, surficial sheets 2 improves with the compactness of absorber 4.
From the viewpoint of further raising surficial sheets 2 with the compactness of absorber 4, as previously mentioned, best surfaces sheet material 2 has retractility.In order to give retractility for surficial sheets 2,, can materials used self have the elastic fiber of retractility or the fiber of retractility is shown by having specific stereochemical structures such as three-dimensional crinkled fibre for example as the structural fibers of surficial sheets 2.As material self elastic fiber of retractility is shown, exemplify by the fiber that elastomeric materials such as synthetic rubber such as styrene butadiene, butadiene, isoprene, neoprene, natural rubber are obtained as melt spinning or with the spandex be representative with polyurethane and polyester etc. as the synthetic fibers of forming.As the fiber of retractility being shown by having specific stereochemical structure, the crispatura three-dimensional crinkled fibre of curl of good especially being to use.For example, exemplify and utilize heat treatment to find spiral helicine potential crimp property fiber of crispaturaing.
Surficial sheets 2 preferably constitutes from its surperficial side direction back side one side and becomes close structure gradually.Like this, the introducing of liquid is just further increased, and liquid is transferred to absorber 4 apace.Under this situation, can be to become close structure continuously from a surperficial side direction back side one side, perhaps also can be the structure that becomes close interimly.According to same reason, the hydrophilic of best surfaces sheet material 2 increases gradually from its surperficial side direction back side one side.Under this situation, can be that hydrophilic increases continuously from a surperficial side direction back side one side, perhaps also can be that hydrophilic increases interimly.
Make from the one side direction back side, surface, one side of surficial sheets 2 and become close structure gradually, for example surficial sheets 2 can be made as the multiple structure more than 2 layers, the layer to downside uses the high layer of fibre density more more.Equally, make the high gradually structure of the surface one side direction back side, one side hydrophilic from surficial sheets 2, for example surficial sheets 2 can be made as the multiple structure more than 2 layers, the layer to downside uses the high layer of hydrophilic more more.Relevant hydrophilic is even preferably have the characteristic that absorbs the liquid hydrophilic repeatedly and also do not reduce, promptly have a stable durable hydrophilic.
Be used in the concrete example of surficial sheets 2 of the sanitary towel 1 of present embodiment as the best, exemplify the spy of application before the applicant and open 2002-165830 communique, spy and open 2002-187228 communique, spy and open 2003-126147 communique, spy and open the sheet material that 2003-247155 communique, spy are opened record in the 2003-250836 communique etc.
Below, describe about the best manufacture method of the sanitary towel of present embodiment.At first, process absorber from face one side (the back-sheet opposite face one side) embossing of absorber.In embossing processing, use and planted the roller of many convex pins and the embossing device that flat roll combines regularly by side face.Add man-hour in embossing, also roller can be heated to predetermined temperature, form point-like recess 7 effectively.
Then, make surficial sheets 2 and absorber 4 overlapping, so that surficial sheets 2 is positioned on the absorber 4, afterwards, this duplexer is implemented the embossing processing that ditch forms usefulness, hot pressing forms leakproof ditch 10,10 on surficial sheets 2 and absorber 4.Between the backing roll that side face has formed and the concavo-convex roller of leakproof ditch 10 corresponding ring-type projecting strip parts and side face are made of the elastomer of surface smoothing, insert logical above-mentioned duplexer and carry out this embossing processing.
Then, thus embossing processing is implemented in the inboard that has formed the leakproof ditch 10 in the duplexer behind the leakproof ditch 10 forms pressure contact portion 9.In this embossing processing, use and planted the roller of many convex pins and the embossing device that flat roll combines regularly by side face.
In addition,, utilize known method to engage, in addition, utilize known method that profile is cut into the shape of sanitary towel 1, and implement end seal, just obtain the sanitary towel 1 of present embodiment in the stacked back-sheet 3 of absorber one side of this duplexer.
According to the manufacture method of present embodiment, after having formed leakproof ditch 10, form pressure contact portion 9 in the inboard of two leakproof ditches 10, just on surficial sheets 2, added strong tension force thus naturally, under this state surficial sheets 2 is being fixed on the absorber 4.And in pressure contact portion 9, because the elongation greatly of surficial sheets one side, one side engages with absorber, therefore, can obtain strong bond strength, and the compactness of surficial sheets in the position except pressure contact portion 92 and absorber 4 also further improves.
More than, be illustrated based on most preferred embodiment of the present invention, but the present invention is not limited to the foregoing description.For example, in the above-described embodiments,, used in its surperficial side to have the sheet material of many protuberances 11, but also can replace, used a surperficial side and all smooth sheet material of the back side one side as surficial sheets 2.
In addition, in the manufacture method of the sanitary towel of the foregoing description, also can before forming leakproof ditch 10, form pressure contact portion 9, form leakproof ditch 10 afterwards.
In addition, the shape that is formed on the pressure contact portion 9 on surficial sheets opposite face one side of absorber 4 is not limited to wire.For example, also can constitute pressure contact portion by the actual recess group who is linked to be wire of a plurality of recesses of the circle of point-like, dotted line shape, polyline shaped, curve-like, polygon, circle, rectangle, hollow or rectangle, polygon.Be linked to be in fact by for example a plurality of point-like recesses under the situation that the recess group of wire constitutes at pressure contact portion, preferably the area of each point-like recess is 0.5~2.0mm 2, that good especially is 1~1.0mm 2Distance between the point-like recess is below 5mm, and particularly below 3mm, this is best from the viewpoint that can induce liquid on the bearing of trend of pressure contact portion effectively.
Similarly, the shape of recess 7 that is formed on back-sheet opposite face one side of absorber 4 is not limited to point-like.For example, can with the shape set of recess wire, ellipse, hollow circular, wavy.Perhaps, also can be made as the plural pattern of combination in any.
In addition, in the above-described embodiments, in any position of absorber 4, all use the identical degree of depth to form recess 7, but can change this degree of depth on each position of absorber 4.About pressure contact portion 9 too.The advantage of the absorbing power that can obtain expecting when like this, just produce improving the flexibility of sanitary towel or fit.
In addition, the foregoing description is the example that absorbent commodity of the present invention is applicable to sanitary towel, but the present invention also can be applicable to various absorbent commodities such as incontinence pad, textile sheet material, disposable diaper in addition.
As mentioned above, therefore absorbent commodity of the present invention, even after fluid drainage, also can keep dry and comfortable state because can a large amount of liquid of instantaneous absorption, obtains comfortable adherent feeling.In addition, because the whole zone of absorber is formed thick close structure, therefore, liquid can effectively utilize the absorbability of absorber integral body up hill and dale easily to the in-plane diffusion in absorber.Thereby, do not waste absorptive capacity, can reduce the use amount of paper pulp or superabsorbent polymer.In addition, because embossing processing is implemented in the whole zone of absorber, therefore, the conformality of absorber increases, and is not easy to take place fold.

Claims (12)

1. an absorbent commodity is characterized in that,
This absorber of back-sheet opposite face one side pressure flower processing from absorber, on this back-sheet opposite face, form many recesses, thereby on whole direction of this absorber, form the density structure, and, from surficial sheets opposite face one side of absorber, this absorber with the embossed processing of surficial sheets, thereby the excretory portion opposed area in this surficial sheets opposite face forms a plurality of pressure contact portions;
In the opposed area of excretory portion at least of above-mentioned surficial sheets opposite face, above-mentioned absorber and above-mentioned surficial sheets are close to;
The area summation of recess is 1~50% with respect to the ratio of the area of the back-sheet opposite face of absorber, and the spacing between this recess of length direction is 3~10mm, and the spacing between this recess of width is 3~10mm.
2. absorbent commodity as claimed in claim 1 is characterized in that, many recesses of the back-sheet opposite face of above-mentioned absorber are formed on the excretory portion opposed area at least.
3. absorbent commodity as claimed in claim 1 is characterized in that, forms many recesses on the back-sheet opposite face of the above-mentioned absorber below the above-mentioned pressure contact portion, thereby is formed on the density structure of whole direction of this absorber.
4. absorbent commodity as claimed in claim 1 is characterized in that, surficial sheets has many protuberances in its surperficial side, and in addition, the back side specific surface of surficial sheets is smooth.
5. absorbent commodity as claimed in claim 4 is characterized in that, surficial sheets becomes the back side one side from its surperficial side direction and become close structure gradually.
6. absorbent commodity as claimed in claim 1 is characterized in that, surficial sheets the back side one side hydrophilic from its surperficial side direction and increased gradually.
7. absorbent commodity as claimed in claim 1 is characterized in that surficial sheets has retractility.
8. absorbent commodity as claimed in claim 1 is characterized in that, the area summation of recess is higher than the ratio of the area summation of pressure contact portion with respect to the area of surficial sheets opposite face with respect to the ratio of the area of the back-sheet opposite face of absorber.
9. absorbent commodity as claimed in claim 1, it is characterized in that, the recess that is formed on the back-sheet opposite face of absorber is the recess of point-like, in addition, is formed at pressure contact portion on the surficial sheets opposite face and is the pressure contact portion of the wire of extending on the length direction of absorbent commodity.
10. absorbent commodity as claimed in claim 1, it is characterized in that, on length direction and/or width, be formed at the spacing between the pressure contact portion of surficial sheets opposite face one side, greater than the spacing between the recess of back-sheet opposite face one side that is formed at absorber.
11. absorbent commodity as claimed in claim 1 is characterized in that, the area summation of pressure contact portion is 0.01~2.0% with respect to the ratio of the area of the surficial sheets opposite face of absorber, and the area of each pressure contact portion is 1~20mm 2, the spacing of the pressure contact portion of length direction is 5~50mm, the spacing between the pressure contact portion of width is 5~30mm.
12. absorbent commodity as claimed in claim 1, it is characterized in that, width central part in above-mentioned excretory portion opposed area is formed with above-mentioned pressure contact portion, has above-mentioned surficial sheets of continuous joint and above-mentioned absorber respectively in the both sides of this central part and the leakproof ditch that forms.
CN2005100674999A 2004-04-27 2005-04-26 Absorptive articles Active CN1689540B (en)

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