CN101732136A - Single package of absorbent article - Google Patents

Single package of absorbent article Download PDF

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Publication number
CN101732136A
CN101732136A CN200910206417A CN200910206417A CN101732136A CN 101732136 A CN101732136 A CN 101732136A CN 200910206417 A CN200910206417 A CN 200910206417A CN 200910206417 A CN200910206417 A CN 200910206417A CN 101732136 A CN101732136 A CN 101732136A
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CN
China
Prior art keywords
absorber
absorbent portion
high absorbent
absorbent commodity
place ahead
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Granted
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CN200910206417A
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Chinese (zh)
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CN101732136B (en
Inventor
山本耕裕
木村真由美
草川哲哉
长原进介
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Kao Corp
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Kao Corp
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Priority claimed from JP2008291284A external-priority patent/JP2010115368A/en
Priority claimed from JP2008291975A external-priority patent/JP5215819B2/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN101732136A publication Critical patent/CN101732136A/en
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Publication of CN101732136B publication Critical patent/CN101732136B/en
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Abstract

The present invention provides a single package of an absorbent article, wherein, an absorber (1) is provided with a front middle-high absorbing part (1a) and a back middle-high absorbing part (1b) which are formed through projecting to the side of a surface that contacts with the skin. A rigid area (9) is provided on the absorber part between two middle-high absorbing part. The rigid area (9) is configured to an area which comprises a dent part (19) which is formed through compressing and jointing a front sheet material (2) and the absorber (1). Furthermore, when a line which penetrates the rigid area (9) is drawn along the width direction, a random part of the dent part (19) surely exists on the line (k1). The absorbent article (10) is folded while the position of the rigid area (9) is used as the folding position. Additionally, the present invention provides a single package of an absorbent article, wherein, an absorber (1) is provided with a front middle-high absorbing part (1a) and a back middle-high absorbing part (1b) which projects to the skin side of a wearer. The two middle-high absorbing parts are separately configured to a front belly side and a back side of the wearer while separated by a separation area (r). The absorbent article (10) is folded at a bending position (k1) of the separation area (r). At the folding state, the whole body or one part of the back middle-high absorbing part (1b) is accommodated in the separation area (r).

Description

The individual package of absorbent commodity
Technical field
The individual package of the absorbent commodity that the present invention relates to absorbent commodities such as sanitary napkin are carried out individual packages and obtain.
Background technology
As the general formation of absorbent commodities such as sanitary napkin or incontinence pad, has the structure that between face sheet and back-sheet, sandwiches absorber.In recent years, in order to improve these absorbent commodities to the close property of health and anti-leakage etc., the width central part of having developed at article makes absorber bulk from hypogastric region side to buttocks, thereby makes the product of this part towards the skin face one side protuberance of wearer.
For example, following sanitary napkin is disclosed in TOHKEMY 2000-189456 communique: with in high bump turn up the soil and form these two positions of position that contacts with the excretory portion of user and the position that contacts with the buttocks of user, the part between these protrusions is arranged to the low flexible region of flexural rigidity.
In addition, a kind of absorbent commodity with high portion in the absorber that is divided into the place ahead veutro and these two positions of rear dorsal part is disclosed in TOHKEMY 2006-239162 communique.This absorbent commodity is by making absorber towards the side-prominent fit that improves of skin, thus can suppress the seepage of excretory liquid etc., by with in high portion be divided into two and make the distortion of high portion in be difficult for influencing high portion in another.
Yet the absorbent commodity before using is made the individual package of individual packages usually because of keeping and the Portability of considering wholesomeness builds up for example three foldings with sheet for packaging.Possess have as described above in the article of absorber of high portion, if for example on whole length direction, form protrusion, then when face is folding successively along its length in order to make the individual packaging goods, might deformation concentrate on this crease position and make it that drastic deformation take place.If with its Kaifeng and expansion, might leave the folding line that causes the unplessantness displeasure when dressing when using, perhaps this part becomes and can not be close to skin and cause leakage.Be provided with the product of holding up rivel for the both sides at absorbent commodity, because the above-mentioned folding above-mentioned rivel portion that also can make produces deformation, the result also can damage anti-leakage.
In addition, carrying out above-mentionedly when having the individual packages of the absorbent commodity of high portion in the absorber, if for example be arranged to the states of three foldings, then each is overlapping in the mode that connects in the outstanding part of the central authorities of absorber.Like this, the local thickening in this eclipsed position becomes the bulky individual package that central authorities bloat.Therefore, can produce the inconvenience of carrying when going out, the destroyed and absorbent commodity that deforms of the state that connects when perhaps carrying, absorbability and dress the comfort variation, perhaps can be out of shape when making the packing of peddling when circulation, be difficult to individual package lumped together and carry out secondary package.
Summary of the invention
The present invention in view of the above problems, the 1st problem provides a kind of individual package of absorbent commodity, it can fold compactly, it is being opened the folding line that can suppress to stay when launch the bag back, and the rivel shape of holding up of sidepiece also is difficult for collapsing flat, can keep the three-dimensional shape of absorber and surrounding member thereof well.
And then, the 2nd problem of the present invention provides a kind of individual package of absorbent commodity, its protuberance by high portion in becoming on absorber improves close property and the anti-leakage with health, and can suppress the part carrying out individual packages during folding absorbent commodity and become blocked up.
The 1st above-mentioned problem realizes by the individual package of following absorbent commodity, the absorbent commodity that the individual package of described absorbent commodity is the fore-and-aft direction along wearer elongate shape obtains with packaging material are folding, described absorbent commodity has the face sheet that is positioned at surface one side that contacts with skin, back-sheet and the absorber between above-mentioned two sheet materials in surface one side that does not contact with skin, wherein, on described absorber, has in the place ahead that forms towards the surface one side protuberance that contacts with skin high absorbent portion in the high absorbent portion and rear, absorber in described two between the high absorbent portion partly is provided with rigid region, this rigid region is constituted as the zone of containing depressed part, described depressed part is by forming described face sheet and described absorber compression engagement, and, when when standardized of width runs through the line of described rigid region, must there be arbitrary part of described depressed part to be present on the described line, described absorbent commodity is that the position with described rigid region is (below, the individual package of this absorbent commodity is called first embodiment of the present invention) that the folding position folds.
In addition, the 2nd above-mentioned problem realizes by the individual package of following absorbent commodity, the individual package of described absorbent commodity folds absorbent commodity and obtain with packaging material, described absorbent commodity has face sheet, back-sheet and the absorber between above-mentioned two sheet materials, wherein, on described absorber, has in the place ahead of the skin side of wearer protuberance high absorbent portion in the high absorbent portion and rear, high absorbent portion is disposed at the place ahead veutro and the rear dorsal part of wearer dividually in described two across separated region, described absorbent commodity is folded towards the protuberance direction of described two high absorbent portions at the crooked place place that is arranged in described separated region, under this state that is folded, at least a portion of high absorbent portion is contained in the described separated region (below, the individual package of this absorbent commodity is called second embodiment of the present invention) in the described rear.
Individual package for the absorbent commodity of first embodiment of the invention, in the time will opening bag with the absorbent commodity that the folded state of compactness is packed, be difficult for staying folding line, and hold up the rivel shape and be difficult for collapsing flat, can keep the three-dimensional shape of the surrounding member of folding position well.
In addition, for the individual package of the absorbent commodity of second embodiment of the invention, because its absorbent commodity has high portion in the absorber, so fit height, can effectively absorb discharged liquid etc., the liquid that is once absorbed etc. are easy to leak not, can realize comfortable wearing sense.And, can suppress the part when carrying out individual packages and become blocked up, thereby keeping property and Portability are good by folding.
Description of drawings
Fig. 1 schematically represents to open the axonometric chart of the state behind the bag as this sanitary napkin of the preferred example (example 1-1) of the individual package of first embodiment of the invention.
Fig. 2 is the amplification profile along the II-II line of Fig. 1.
Fig. 3 is the amplification profile of holding up rivel along the III-III line of Fig. 1.
Fig. 4 is the vertical view of wanting cage structure further to schematically show with sanitary napkin shown in Figure 1.
Fig. 5 is the sketch map of the form that is used to illustrate that sanitary napkin shown in Figure 4 is folded.
Fig. 6 will be used for the vertical view of wanting cage structure to schematically show of the sanitary napkin of comparison.
Fig. 7 is the sketch map of the form that is used to illustrate that sanitary napkin shown in Figure 6 is folded.
Fig. 8 is a vertical view of its that see from its face sheet side as this sanitary napkin of another preferred example (example 1-2) of the individual package of first embodiment of the invention being opened the state behind the bag.
Fig. 9 is the sketch map of the section of holding up rivel (leakproof wall) of each one of the sanitary napkin of presentation graphs 8, and Fig. 9 (a) is the XI-XI line profile of Fig. 8, and Fig. 9 (b) is the XII-XII line profile of Fig. 8, and Fig. 9 (c) is the XIII-XIII line profile of Fig. 8.
Figure 10 is the axonometric chart of the summary form under the naturalness of sanitary napkin of presentation graphs 8.
Figure 11 is the pattern figure of an example of the embossed pattern of the expression rigid region that becomes this example 1-1 and 1-2.
Figure 12 is that expression becomes the pattern figure as the change of shape of the embossed portion of the rigid region of another preferred example of first embodiment of the invention.
Figure 13 be with the sanitary napkin of this example 1-1 with the folding form of package sheet material according to this axonometric chart of representing in proper order.
Figure 14 is that the part of individual package of schematically representing the sanitary napkin of this example 1-1 is cut axonometric chart.
Figure 15 is the local disrumpent feelings axonometric chart of individual package (example 2-1) of sanitary napkin of schematically representing the preferred example of second embodiment of the invention.
Figure 16 schematically represents the unwrapp of individual package shown in Figure 15 and the local disrumpent feelings axonometric chart of the absorbent commodity (sanitary napkin) when extending.
Figure 17-the 1st, the profile of the IV-IV line section among expression Figure 16.
Figure 17-the 2nd, the profile of the state the when sanitary napkin shown in the presentation graphs 17-1 is folded.
Figure 18 is the profile of expression schematically after the periphery of the depressed part among Figure 17-1 is amplified.
Figure 19 be the absorber of schematically representing the sanitary napkin among the example 2-1 with and on the vertical view of position relation of the depressed part that sets.
Figure 20-the 1st schematically represents the profile of the sanitary napkin in another preferred example (example 2-2) of second embodiment of the invention.
Figure 20-the 2nd, the profile of the state when schematically the absorber shown in the presentation graphs 20-1 is by single packing.
Figure 21 be the absorber of schematically representing the sanitary napkin in another preferred example (example 2-3) of second embodiment of the invention with and the vertical view of collapsed shape.
Figure 22 is a key diagram of schematically representing the variation of the sanitary napkin in the second embodiment of the invention, Figure 22 (a) is the vertical view of sanitary napkin, Figure 22 (b) is the profile of the B-B line section of Figure 22 (a), and Figure 22 (c) is the vertical view of another variation of expression depressed part.
Symbol description
High absorbent portion in 1 absorber 1a the place ahead
High absorbent portion 1c lower floor absorber in the 1b rear
2 face sheets, 3 back-sheet
4 side sheet material 4k hold up rivel portion
42 elastic telescopic portions of 41 basal wall portions
The inboard protuberance 42b of 42a outside protuberance
48 multilamellar portions, 8 side alar parts
9 rigid regions, 10,20,30,40,50 absorbent commodities
11,12 point-like grooves, 19 embossed portion (depressed part)
19a~19e impression 25 perimeter
26 circumference embossing, 27 side embossing
33 peels, 34 package sheet materials
35 sealings 100,100 ' individual package
The specific embodiment
For the individual package of absorbent commodity of the present invention, open sanitary napkin behind the bag according to its preferred example individual package that is sanitary napkin and with it, be elaborated with reference to accompanying drawing.The invention of preferred above-mentioned first embodiment of the present invention or second embodiment, the invention of these embodiments has identical or the corresponding techniques feature, constitutes one group of invention as the invention described above.Below above-mentioned first embodiment and second embodiment are described in detail respectively, but the present invention can not be explained with these embodiments with limiting.At first, the preferred example to first embodiment of the present invention describes.
Fig. 1 schematically represents to see that from the face sheet side the preferred example of first embodiment of the invention is the axonometric chart of the state before the packing of individual package (example 1-1) of absorbent commodity.In this Fig. 1, expression be the state that makes sanitary napkin slowly crooked along its length, expression be the state that the state when dressing is opened slightly.In addition, Fig. 2 is the amplification profile along the II-II line of Fig. 1.In this sanitary napkin 10, the rectangular absorber 1 of overlooking time band fillet of using fibre sheet material (platform paper) coated papers pulp fibres aggregation on the whole and obtaining is sandwiched between back-sheet 3 and the face sheet 2 (among Fig. 1, absorber 1 is covered and cannot see by face sheet 2, but for the ease of understanding, imagination has been removed the situation of face sheet, comes together to represent absorber 1 with absorbent portion 1a, 1b, these symbols of 1c).In addition, on the both sides of its width (Y direction), be provided with towards face sheet side protuberance by be surrounded by in inside the cavity and along its length (directions X) side sheet material 4 of extending constitute hold up rivel 4k.Here, the face sheet side becomes and contacted of the skin of wearer, and the back-sheet side becomes and contacted of underwear.In addition, back-sheet 3 has been endowed cohesive so that can be fixed on the underwear when dressing.In addition, in the following description, the veutro of the main reception discharged liquid of sanitary napkin 10 is set at front portion or the place ahead, the buttocks side opposite with it is set at rear portion or rear.
The absorber 1 that is arranged on the back-sheet 3 extends to the rear portion from the front portion of sanitary napkin 10.Dispose the absorber 1c of lower floor in this absorber 1, be high absorbent portion 1b in high absorbent portion 1a and the rear in the place ahead that is constituted by the upper strata absorber 1 that obtains with fibre sheet material coated papers pulp fibres aggregation equally towards its face side protuberance.And, along its length in the absorber 1c of lower floor of Yan Shening and the place ahead in high absorbent portion 1a and the rear high absorbent portion 1b covered by face sheet 2.In addition, in the place ahead in high absorbent portion 1a and the rear high absorbent portion 1b have separated region (width on the length direction) P at the substantial middle position of absorber 1 and be separated, high absorbent portion 1a is corresponding to the position of excretory portion in the place ahead, and high absorbent portion 1b is corresponding to the buttocks position in the rear.Constitute by this, absorbent commodity has absorber part high in two that are covered by face sheet 2 on the whole.
In the place ahead part of the sanitary napkin 10 of this example 1-1, and be the lateral location place of high absorbent portion 1a position in corresponding to the place ahead, be formed with the side alar part 8 that extends to the outside, side overleaf on the both sides of sheet material 3.The back side of side alar part 8 has been endowed binding agent, and the crotch portion that this side alar part 8 clips underwear when dressing folds into the outer surface side of underwear.And then the both sides of back-sheet and side sheet material (side protuberance) 10a and length direction front and rear part 10b are more outstanding a little and formed aileron towards the outside than absorber 1.Be bonded with each other with side sheet material 4 at this part place face sheet 2.By these outstanding aileron and side alar parts, the installation on the underwear is dressed and is become easily, and the while can advance more effectively to prevent the particularly side leakage of seepage of liquid etc.
In this example 1-1, formed rigid region 9 described later between the high absorbent portion 1b in high absorbent portion 1a and the rear in forwardly.As shown in Figure 2, part 13 becomes not the part that the absorber 1c of lower floor is only arranged by high absorbent portion (1a, 1b) in the place ahead that bulges into convex that the upper strata absorber constituted and the rear near the front and back of this rigid region 9, and the flexural rigidity of rigid region 9 is than the absorber 1 around it (near the part 13 of rigid region) height.By such setting, in this example 1, at the folding position k of this rigid region part 1The place is with the front and rear part of absorbent commodity 10 when folding, and this folding position is difficult for becoming the crease that formed wire or the state of a large amount of gauffers, but becomes the form with the width bending of regulation.Therefore, when opening folding absorbent commodity 10, can not stay the gauffer that causes unplessantness displeasure or dark folding line.
In addition, in the present invention, the assay method of flexural rigidity is not particularly limited, and unless otherwise specified, then is following assay method.In temperature is that 23 ℃, humidity are in 50% the test chamber, uses the smart device of Dae Young Co., Ltd.'s science of the firm soft algoscopy that is suitable for JIS L1096 (general fabrics test method) defined to make made Handle-O-Meter tester.Be adjusted into horizontal arrangement test film on the sample bench of 30mm between with slit, make the mensuration position of this test film be positioned at the center between slit and make along the length of this test film of absorber length direction consistent with direction perpendicular to slit.Test film is not fixed on the sample bench.The blade that is adjusted into the position (upper/lower positions) that can drop to below 8mm from the surface of sample bench is descended with constant speed 200mm/min from the top of test film.Then, read in the shown peak (cN) of indicator (load gauge) when pushing this test film before and after the length direction.Carry out 5 times and measure, calculate its meansigma methods as values of stiffness.
In the sanitary napkin of this example 1-1, the both sides of high absorbent portion 1b in high absorbent portion 1a and the rear in the place ahead, and, on face sheet 2, be formed with the depression or the continuous recess 11 of point-like along the width both sides of rigid region 9.Make face sheet 2 be firmly fixed at absorber 1 thus, can prevent the dislocation of face sheet with respect to high absorbent portion in the place ahead and the rear.Among this example 1-1, the groove 11 that the embossing of point-like forms continuously extends near the mode of surrounding high absorbent portion in this place ahead the front end S of high absorbent portion 1a in the place ahead, forms circular-arc near the rear end of the absorber 1 at the length direction rear of absorbent commodity 10 agley.And then, in the wings near rear end T of high absorbent portion 1b formed the groove 12 that the point-like embossing of surrounding high absorbent portion 1b in this rear forms continuously.These grooves 11,12 can be by the processing of 1 heat embossing forms from face sheet 2 to absorber.In addition, the successive embossing (not shown) of formation rigid region also can be that the wire of broad ways extension or the groove of point-like have many situation in the longitudinal direction off and on.
As shown in Figure 1, at the front side of the sanitary napkin 10 of this example 1-1, be folding position k with near the groove location the front end S of high absorbent portion 1a in the place ahead 11 3, with its front side according to folding with the eclipsed mode of the face side of absorbent commodity 10.And, at rigid region 9, be folding position k with its substantial distance direction centre position 1 Sanitary napkin 10 is folding.In addition, at the article rear side, be folding position k with near the position of the groove 12 the rear end T that surrounds high absorbent portion 1b in the rear 2Its rear side is folding.Like this, the sanitary napkin 10 of this example 1-1 is folded in the position of these three broken lines and becomes individual package, but the more detailed situation of this invagination sequential scheduling is described in the back.
Fig. 3 is a profile of schematically representing III-III line section shown in Figure 1.Its both sides of bag in the sanitary napkin 10 of this example 1-1 is provided with in its surface and swell and hold up rivel 4k by what side sheet material 4 constituted.As shown in Figure 3, side sheet material 4 becomes the outside sheet material 14 of mutual stickup and the double-layer structure that inboard sheet material 15 forms.Side sheet material 4 loosely is disposed at its sidepiece under the state that sanitary napkin main body (face sheet, back-sheet and absorber) has been extended, on the other hand, inner elastic component sets with elongation state.Become as shown in Figure 1 when dressing towards the case of bending of face sheet side depression by the sanitary napkin that makes formation like this, hold up rivel 4k and on the surface of absorber 1, swell, from the width directional profile see form circular-arc.Holding up on the rivel 4k of protuberance, between lateral film material 14 and inboard sheet material 15, sandwich many thin elastic cords 16 of elongation along its length, by the erected state that its contractility guarantees to hold up rivel 4k, keep showing the drum of comfort cushioning simultaneously with tunnel-like along the article length direction.
A base end part 17 along its length of side sheet material 4 is fixed on the face sheet 2 of side upper surface side of absorber 1, another base end part 18 be fixed in away from the side of absorber 1 back-sheet 3 on the outstanding 3a of aileron portion in side.Constitute by this, formed the 1st blank part Q that on the surface of absorber 1, extends in the inside of side sheet material 4 1, and with the 1st blank part Q 1The 2nd blank part Q that is communicated with and extends in the side of absorber 1 2Hold up rivel structure by this distinctive tubular, can improve the fit sense when dressing, and can play high drip-preventing function to the side, from but preferred.
Below, Fig. 6, Fig. 7 (a) of the example that is used for comparison with reference to Fig. 4, Fig. 5 (a)~(c) that the sanitary napkin of this example 1-1 is further schematically shown and expression and (b) describes the form that folds of the part of the rigid region among the present invention.
At first, shown in Fig. 4 and Fig. 5 (a), among this example 1-1, the integral width that is formed with between the high absorbent portion 1b in high absorbent portion 1a and the rear forwardly on the length direction (directions X) is the depressed part 19 of the crescent shape (lunate shape) of w, has formed the flexible rigid region 9 lower than the other parts of absorber 1 thus." rigid region " among the present invention be the embossing part that has been enhanced of clinodactyly rigidity not only, also refer to the shape effect when overlooking, and can obtain the scope for the effect of the folding crease that has suppressed to form high rigidization of face.At this moment, the line k that runs through above-mentioned rigid region 9 when standardized of broad ways 1The time, must there be arbitrary part of above-mentioned depressed part 19 to be present in above-mentioned line k 1On.Particularly, be meant substantially along item width direction (Y direction) and length direction (directions X) see high rigidization part and being projected during projection look like the zone divided.Among this example 1-1, with respect to the embossed portion of crescent shape, the zone of dividing with the chain-dotted line of article central authorities (rectangular area) becomes rigid region 9 (with reference to Fig. 4).
The formation method that becomes the depressed part (embossed portion) 19 of rigid region 9 is not particularly limited, and for example can form by following heat embossing method.Even with possessing the heat embossing device that on periphery, has the backing roll that disposes in opposite directions corresponding to the knurling rolls of the convex strip portions of the shape of impression portion with the periphery of knurling rolls.With absorber and face sheet according to the face sheet side is inserted between two rollers in the mode of knurling rolls side.Then, form the impression portion of caving in into concavity by they being heated integratedly with pressurization.In addition, beyond the heat extraction embossing, can also wait with ultrasonic wave embossed method to form.Embossed portion can also be arranged to other different shape except that above-mentioned, this is further described in the back.
When the part place at the rigid region 9 that has bigger to a certain degree length direction width w like this folds absorbent commodity 10, the part of rigid region 9 can not be bent into wire, such shown in Fig. 5 (b), rigid region 9 with planar or slowly crooked form bending, is difficult for forming the crease of acute angle at folded part.The deformation ε of the absorber inside in the time of thus, can making bending is difficult for concentrating on the folding position.Therefore can on absorber 1, not leave irregular or dark folding line after holding bag in use yet, from but preferred.In addition, the tubular of side hold up rivel 4k also shown in Fig. 5 (c) like that, the drum of protrusion can not collapse flat, can guarantee empty state.
Contrast with it, in high forwardly absorbent portion 1a that illustrates as being used for the form of comparison and rear, do not form under the situation of rigid region between the high absorbent portion 1b, such shown in Fig. 7 (a), the folding position is converted into acute angle with wire easily when bending, perhaps becomes the form that produces the crease of gauffer shape at its periphery easily.Therefore, deformation ε concentrates on the bending part from both sides, stays the dark folding line of gauffer shape or recess when opening easily on the folding position of absorber central part 21 (with reference to Fig. 6).In addition, the tubular of side is holded up rivel 4k and also deformation 22 can be taken place in the folding position sometimes, and like that, blank part becomes the part and collapses flat shape and can not guarantee original shape shown in Fig. 7 (b).
Below, to as the state before the packing of the individual package (example 1-2) of the absorbent commodity of another preferred example of first embodiment of the invention, describe with reference to Fig. 8~Figure 10.For the sanitary napkin 20 of this example 1-2, just different with the sanitary napkin 10 of above-mentioned example 1-1 points describe, and identical point omits explanation.Point for not specifying can suitably be suitable for the explanation to above-mentioned sanitary napkin 10.
Sanitary napkin 20 has when dressing position excretory portion opposing part A that the fluid drainage portion with wearer disposes in opposite directions on its length direction, be configured in than excretory portion opposing part A more by the back quadrate part B of the dorsal part (rear) of wearer when dressing and form the leading section of sanitary towel 20 respectively and the leading section C and the rearward end D of rearward end.The border of excretory portion opposing part A in this example and back quadrate part B is positioned at the substantial middle portion of the length direction of sanitary towel 20.The back quadrate part B of sanitary towel 20 is apart from the above position of above, the preferred 3cm of alar part base end part 81 (with reference to Fig. 8) 2cm of sanitary towel's rear end side.
Rivel (leakproof wall) 4k that holds up among this example 1-2 extends on direction both sides, the broadband of sanitary towel 20, on excretory portion opposing part A, shown in Fig. 9 (a), the elastic telescopic portion 42 that is made of inboard protuberance 42a and outside protuberance 42b forms section T word shape on the R of the upper end of basal wall portion 41.That is, this leakproof wall 4k has following shape: from the free end edge 44 that absorbs the basal wall portion 41 of holding up on the side with perpendicular towards mounting elastic telescopic portion 42.The outstanding width of inboard protuberance 42a and outside protuberance 42b can be the same or different, but in the example shown in Fig. 9 (a) is different, and the ratio of the outstanding width of inboard protuberance 42a and the outstanding width of outside protuberance 42b (the former: be about 3: 2~5: 1 the latter).On two protuberance 42a, 42b, be equipped with to devices spaced apart the elastic component 16 of wire separately.A pair of rivel 4k, the 4k of holding up forms along the dual-side of the length direction of the absorbed layer E that is made of face sheet 2 and absorber 1.The rivel 4k that holds up among this example 1-2 forms by other member of formation (face sheet 2 or back-sheet 3 etc.) that elastic telescopic member 43 is fixed in like that sanitary towel 20 shown in Fig. 9 (a)~(c).In addition, for Fig. 9 (a)~(c), for the ease of understanding, be that hatching has been shown among Fig. 8 at the vertical view of the state that has stretched, and in fact expression be as shown in Figure 10 with the wearing state or be bordering on the state of the nature shape section when crooked.
The side sheet material of elastic telescopic member 43 (basal wall portion forms the sheet material portion that uses) 4 is on the C of entire front end portion and rearward end D of sanitary towel 20, with near the ora terminalis 45 of ora terminalis 44 opposition sides of elastic telescopic portion 42 sides shown in Fig. 9 (a)~(c) like that, lower face side at absorber 1 is fixed between the sidepiece 2a and back-sheet 3 of face sheet 2 by common engagement means 60 such as binding agents, in addition, on leading section C and rearward end D, the width inboard of elastic telescopic portion 42 (inboard protuberance 42a) is fixed on the face sheet 2 at least.
Hold up rivel 4k shown in Fig. 9 (b) among this example 1-2, on the part by the basal wall portion 41 of the elastic telescopic member 43 of quadrate part B after being disposed at multilamellar portion 48 is set, thereby makes that the upper end R from this basal wall portion 41 on the quadrate part B of this back is shorter than this distance L 1 on the excretory portion opposing part A (with reference to Fig. 9 (a)) to the distance L 2 (with reference to Fig. 9 (b)) of back-sheet 3 (application of anti-leakage layers F).Promptly, among this example 1-2, from the viewpoint of making, use width all uniform elastic telescopic member 43 on whole length direction of side sheet material 4 to form the leakproof wall, on the side sheet material 4 by the B of portion in the wings multilamellar portion 58 is set, makes the upper end R on the quadrate part B of back shorter than this distance L 1 on the excretory portion opposing part A to the distance L 2 of application of anti-leakage layers F from basal wall portion.In addition, multilamellar portion 48 bends the part of the width of the side sheet material 4 face mode toward each other according to the same side that makes this sheet material portion, and by common engagement means 60 such as bonding agent, heat seal this face in opposite directions is engaged with each other and forms.
Multilamellar portion 48 is formed on the whole specific length of length direction of elastic telescopic member 43.On the length direction of sanitary towel 20, the length L 3 that is formed with the part of multilamellar portion 48 is preferably 15~45% of the total length L4 (with reference to Fig. 8) that holds up the part that rivel 4k holds up, is preferably 20~30% especially.
In the sanitary towel 20 of this example 1-2 hold up rivel 4k be arranged to hold up height from excretory portion opposing part A to back quadrate part B step-down (with reference to Fig. 9 (a) and (b)) gradually, and then on the leading section C and rearward end D in the length direction outside, be arranged to not have the state of holding up height.This can be shown in Fig. 9 (c) like that, according to the mode that makes elastic telescopic portion 42 near absorber the basal wall portion 41 of gapless folded state is set, and be fixed on the face sheet 2 and carry out.
The sanitary towel 20 of this example 1-2 for example can be by possessing following operation the manufacture method of absorbent commodity make effectively: the operation of making the main body that constitutes by absorbed layer E or by this absorbed layer E and application of anti-leakage layers F; Make the operation of elastic telescopic member 43, this elastic telescopic member 43 is made of the elastic telescopic portion 42 of the side sheet material 4 that has certain width on whole length direction with the setting that links to each other with an end 44 of the width of this side sheet material 4; With this elastic telescopic member 43 in the other end 45 of side sheet material 4 or be fixed in the operation of the both sides of this main body near it; On the part of the above-mentioned back of being disposed at of this side sheet material 4 of this elastic telescopic member 43 quadrate part B, be formed on the operation that spreads all over the multilamellar portion 48 of specific length on the length direction of this elastic telescopic member 43; And the both ends of the length direction of this elastic telescopic member 43 are fixed in operation on this main body.For other concrete processing, get final product according to the common manufacture method of this kind article, can be with other variation with reference to TOHKEMY 2003-245306 communique.
Section T font among this example 1-2 hold up rivel shown in Fig. 9 (a), the elastic telescopic portion 42 of its upper end is and in opposite directions plane of skin face, so can realize the good and leakproof fluidity of skin sense of touch simultaneously.And, since when making individual package easily the central configuration of the sanitary towel of dark bending become the depressed part 19 of rigid region 9, so can prevent wrinklingly in this peripheral width centre, simultaneously can prevent to become the member of holding up rivel 4k and collapse flat and stay over-drastic crease.As a result,, open its when using, hold up that good T word shape also can restore in the holding up property fully of rivel 4k and the section even when individual packaging, produce crease, from but preferred.
By being arranged to above-mentioned example, can prevent the wrinkling of goods centre, prevent that collapsing of rivel is flat, thereby become stable shape more by the curved shape of holding up before and after the goods that rivel forms.Meanwhile, when being fixed in sanitary towel on the medicated underpants, can also improve the particularly operability of alar part.
Below the rigid region in the first embodiment of the invention is further specified.
Figure 11 represents to form an example of the embossed pattern of rigid region, and the relation between the length direction width w of the size of its embossing shape and rigid region is described.In this embodiment, depressed part 19 is made of discontinuous orthogonal impression 19a~19e, arranges discontinuously on the banner direction of above-mentioned absorber on the whole, and forms the crescent shape of overlooking of the bending shape that protrudes towards the rear side of this absorber.More specifically, for the line that the width (Y direction) along article extends, imaginary boost line q 1, q 2, q 3, when it is moved, at boost line q 1The position, impression 19a and 19e are present on the line, along with towards boost line q 2Move, become impression 19a, 19b, 19d and 19e and be present on the line.Then, at boost line q 2The position, impression 19a~19e all is present on the line.Along with it towards boost line q 3Move, become impression 19b~19d and be present on the line, at boost line q 3The position, impression 19c is present on the line.At this moment, can make whole depressed part 19 depressions, also can only be the impression depression.Perhaps also can as second embodiment (Figure 19), in depressed part, have shallow part of depression and the dark part of depression, thereby form concavo-convex.
Here, the length direction width w of rigid region 9 be preferably dimensioned to be the absorber that does not form embossing around the rigid region thickness, be the absorber 1c of lower floor among this example 1-1 and the 1-2 more than 2 times of thickness d (with reference to Fig. 2) (but, consider the visuality of member structural map among Fig. 2, the absorber 1c of lower floor is schematically drawn out than heavy back).And then this width w is 2.5~9 times of thickness d more preferably, are preferably 3~6 times especially.In addition, the size of the banner 1 of rigid region banner (r among Fig. 4) of high the place ahead or rear absorbent portion 1a, 1b in being preferably more than and equaling.In addition, the length direction width b of each impression greater than banner a (during b>a), can guarantee effective rigidity, from but preferred.Each impression 19a~19e is discontinuous during projection image when the length direction (directions X) of sanitary napkin 10 is gone up projection, but as the projection image when banner direction (Y direction) is gone up projection, each impression of adjacency overlaps each other and forms continuously.Become crescent shape when overlooking on the whole thus.By forming rigid region 9 in the zone of containing this crescent shape embossed pattern, sanitary towel is when the bending of the position of this rigid region 9, can not make crease become wire, and the pressure that can not make absorber concentrates on the folding position part, particularly open the folding line that Shi Buhui stays gauffer shape or recess, from but preferred.
Figure 12 is the figure that is illustrated in the shape of the various embossed patterns that form on the rigid region.In addition, in this Figure 12, represented depressed part or impression as a whole by the part that solid line surrounds, horizontal line or oblique line are represented its zone.In addition, represented the evaluation result of embodiment among the figure, this has been described in the back.Pattern A shown in the figure and B are the examples of the depressed part that is made of continuous embossing.With regard to this successive pattern, depressed part becomes identical with the impression meaning.Pattern C~G is the example of the depressed part that formed by discontinuous wire embossing (impression).That is a plurality of impressions set and form a unified depressed part.The length of the length direction of each embossed portion is longer than the length of banner direction, and all is that the neighbor of each wire embossing overlaps each other when seeing on banner direction.The folded form of pattern A~G becomes the folding form of face.Contrast with it, in the embossed pattern of pattern H and I, the width of each impression is that length direction length diminishes, it is folding that folded form becomes line easily.At that point, pattern A~G is difficult for staying the folding line of absorber when opening, and also stabilisation more of the shape of lateral members, from but preferred.Although not shown, also can form rigid region here by the embossed portion that a plurality of these embossed patterns of combination form.For example, preferred compositions pattern B and also with the pattern after its counter-rotating, be arranged to circular-arc ledge is contacted with each other and obtain overlook embossed portion for " x " shape.
The individual package of the absorbent commodity of this example 1-1 is as described above at the folding position of absorbent commodity k 1, k 2, k 3These three positions are folded and pack.Figure 13 is the order of expression when folding and the figure of the example of the state in the folding process thereof, and Figure 14 is folded and the axonometric chart of the individual package of state after packing.In addition, represent package sheet material 34 with double dot dash line among Figure 13, among Figure 14 its part is cut the back and represent.On the outer surface of the back-sheet 3 of sanitary napkin 10, be attached with the package sheet material 34 of the total length that comprises back-sheet 3, package sheet material 34 can be taken off simply during use, and after taking off package sheet material 34, the bonding agent of this sheet material is stayed on the outer surface of back-sheet 3.Therefore, back-sheet 3 can be attached on the underwear during use.
Shown in Figure 13 (a), the part of rear side of absorbent commodity 10 that the back side is had package sheet material 34 is at broken line k shown in Figure 1 2The position folding towards face sheet 2 sides, then, with side alar part 8 towards face sheet 2 sides folding after, will be at broken line k 2Place's folded portions is at the broken line k at the center of rigid region 9 1The place folds and the state of formation Figure 13 (b) towards equidirectional.At this moment, when there was adhesive surface at the back side at side alar part 8, that position also can cover with other package sheet material.And then with the broken line k of this folded portions 1 at Fig. 1 3The position folding in the mode on the face sheet 2 that is overlapped in front side part.Like this, as shown in figure 14,, encapsulant 33 is pasted on its outer surface and fixes, thereby can make the individual package 100 of sanitary napkin 10 with this package sheet material 34 after folding of sealing 35 sealing.
Be to be that example is illustrated the individual packaging form in above-mentioned, like this at k with example 1-1 1, k 2, k 3The place is folding and to make the individual packaging form also be same for the sanitary napkin of example 1-2.
In addition, be to make the individual packages that folding is four foldings in this example, but be not limited to the individual packages that this folding is four foldings,, also can be converted into three folding back packings for example for the absorbent commodity of long type more on the length direction.
In addition, by folding position k with shape shown in Figure 13 (a) 2Be arranged on the position that can not fold high absorbent portion 1b in the rear and be adjacent to high absorbent portion 1b in the rear, make its high absorbent portion 1b bending in the rear, when then opening folding absorbent commodity 10, can be at folding position k 2Do not stay the gauffer that causes unplessantness displeasure or dark folding line.And then by forming the groove 12 that the point-like embossing forms continuously, and the height by making high absorbent portion 1b in the rear from the front part branch to the rear part step-down obliquely, can make gauffer or folding line be difficult for forming.
The tubular of side hold up rivel 4k because of rigid region formation brought prevents that the effect that the strong crease between high absorbent portion forms in the place ahead and the rear is slowly crooked, except above-mentioned such effect, hold up rivel be difficult for the collapsing difficult formation gauffer that brought or the effect of folding line by having the barrel-shaped structure of inboard and this two places cocked position of the outside, also having.Although a little less than the effect of holding up rivel of effect than barrel-shaped structure, but it is elastic partially folded and holding up rivel or having to the inside/rivel of holding up of holding up rivel (shown in example 1-2) or Y word section shape of the so-called T word section shape in the outstanding elastic zone of performance, the outside of forming also can show the same effect that is difficult for collapsing and is brought for showing.
Below, the preferred example of second embodiment of the invention is described.
Figure 15 represents that schematically the preferred example of second embodiment of the invention is the local disrumpent feelings axonometric chart of the individual package (example 2-1) of sanitary napkin.Figure 16 schematically represents the unwrapp of individual package shown in Figure 15 and the local disrumpent feelings axonometric chart (but, sheet for packaging and peel and not shown) of the absorbent commodity (sanitary napkin) when extending.
The sanitary napkin of this example 2-1 has absorber 1 between the face sheet 2 of the back-sheet 3 of liquid impermeability and liquid permeability.The skin of this face sheet 2 with wearer used in contact, and when drainages such as menses, absorber 1 will see through absorption and maintenances such as the discharged liquid of face sheet 2.And in this example 2-1, circumference embossing 26 and side embossing 27 are to form face sheet 2 and absorber 1 incorporate mode.Thus, face sheet 2 and absorber 1 can not be fixed with misplacing, and can stop to side or fore-and-aft direction and flow through the liquid that comes etc., thereby prevent fluid seepage.The method that forms this circumference embossing and side embossing is not particularly limited, and can form with employed method in common this kind article.
And then the sanitary napkin 30 of this example 2-1 engages back-sheet 3 and face sheet 2 and sealing by perimeter 25.Among this example 2-1, the method as forming perimeter can list for example heat seal.In addition, the sanitary napkin 30 of this example 2-1 has the side alar part 8 that stretches out towards its outside at the place ahead slightly of the central authorities of article length direction veutro on the dual-side of item width direction.This side alar part 8 folds to a side opposite with the skin side of wearer in use and its back side is bonded in the crotch portion of underwear, can prevent to move, and can prevent the stained of underwear that side leakage causes.Although not shown,, also preferably be provided with when dressing and side sheet material that the skin face was holded up and was disposed at the three-dimensional rivel of face sheet side in contact and is used to form it from further effectively preventing the viewpoint of side leakage.In addition, on absorbent commodity 30, the underwear face side of sheet material 3 is provided with anti-dislocation bonding material (not shown) overleaf, fixes in the position that becomes contact condition as described above and installs.
Absorber 1 among this example 2-1 is overlooked on roughly whole that is disposed at article according to the mode of the peripheral aileron portion that reserves absorbent commodity.This absorber 1 is made of the absorber 1c of lower floor of the inner body that spreads all over above-mentioned circumference embossing 26 and the upper strata absorber (1a, 1b) that is arranged on this lower floor's absorber.Here, the absorber 1c of lower floor is a strip, widely is disposed at article on the whole, from extending near the article leading section 10c near the rearward end 10d.Contrast with it, this upper strata absorber have in the place ahead side-prominent towards skin, veutro the place ahead of wearer high absorbent portion (the place ahead absorption convex shaped part) 1a and high absorbent portion (rear absorption convex shaped part) 1b in the rear side-prominent towards skin, dorsal part rear.Among this example 2-1, upper strata absorber and lower floor's absorber are bonded together, and this joint method is not particularly limited, and preferably handle engaging by hot melt adhesives or point-like concavo-convex (embossing).
Among this example 2-1, the vaginal orifice point of release G in opposite directions with wearer is arranged in forwardly on the high absorbent portion 1a, this part contacts with the skin of wearer in the mode of firmly being close to.Therefore, when discharged liquid (menses etc.), by face sheet 2, this discharged liquid directly moves in the place ahead high absorbent portion 1a and is absorbed.And owing to make high absorbent portion 1a protuberance in the place ahead, therefore with respect to the absorber that does not have this protrusion, the absorbable liquid measure of this part is many.Thus, can under the situation of the careless expansion that prevents menses etc., absorb and keep.In addition, absorbed high absorbent portion 1a in the place aheads of menses etc. owing to be incorporate with the absorber 1c of lower floor, institute is so that menses move to this lower floor rapidly, even the activity of for example oppressed such wearer is arranged, once the menses of Xi Shouing etc. can not flow out yet.
On the other hand, high absorbent portion 1b contacts with buttocks when dressing in the rear of this example 2-1, and particularly corresponding buttocks stitches anally assigns to be close to than the deep.And high absorbent portion 1b can not absorb high absorbent portion 1a in the place ahead or what return to some extent and flow to absorption such as the liquid that comes at rear (buttocks side) and become " barrier rib " that prevents the rear seepage in the rear.Promptly, even the liquid that flows through from the place ahead etc. is arranged, side, the place ahead (obstruct face) H (with reference to Figure 17-1, Figure 18) of high absorbent portion 1b also can catch this liquid etc. in the rear, does not allow it flow to the article outside, and promptly introduces among high absorbent portion 1b or the absorber 1c of lower floor in this rear.From this point of view, the obstruct face of high absorbent portion 1b H preferably becomes the vertical surface that can have or be with fillet in the rear, so that become the face of holding up, and be preferably and the article the place ahead tabular surface in opposite directions or the face of band fillet with respect to the upper surface of the absorber 1c of lower floor.For example, under the horizontal posture when the wearer recumbency, perhaps make the skin face of point of release G place wearer and the close property between the article surface is impaired or the situation of dislocation takes place, and the amount of menses etc. is more and situation that can not absorb fully at the front side of absorber etc. all have generation because of the activity of health etc.At this moment, being close in the rear of buttocks seam high absorbent portion 1b also can bring into play and absorb menses to prevent the effect of seepage.
Below with reference to Figure 15 and Figure 16 the packed state of the individual package of this example 2-1 is described.Package sheet material 34 is folding in the outer surface and the sanitary napkin 30 overlapping backs of back-sheet 3 one sides of sanitary napkin 30.At first, in the rear of sanitary napkin 30 in separated region r near the high absorbent portion 1b or with the rear in the baseline k of high absorbent portion 1b adjacency 1The place bends and folds with package sheet material 34.And then, forwardly near the high absorbent portion 1a or the baseline k of the close front part 10c that is adjacent 2Represented folding line place is folding with package sheet material 34, thereby is converted into three foldings.Then, pack the edge of sheet material 34, wrap in inner individual package 100 ' thereby form the sanitary napkin 30 that will be converted into three foldings with sealing 35.On the package sheet material after the bending 34, on the end of surface one side that is exposed to individual package 100 ', paste peel 33 and sealing.When it is opened bag, by peel 33 is drawn towards direction T, thereby will open in the bonding of package sheet material 34 at potted line 35 places, taken off with package sheet material 34 with the 1st and the 2nd peeling paper (not shown) that the mode that can not peel off engages with package sheet material 34, thereby will be taken out under the state of sanitary napkin 30 after taking peeling paper off wherein.
Figure 17-the 1st, the profile of the IV-IV line section among expression Figure 16.Shown in this Figure 17-1, in the sanitary napkin of this example 2-1, on whole, set in the place ahead high absorbent portion 1b among the high absorbent portion 1a and rear in fact on the absorber 1c of the uniform lower floor of thickness, two convex shaped parts across separated region r with the separated position setting.The profile of Figure 17-the 2nd, the sanitary napkin of schematically representing this example 2-1 according to the section shown in Figure 17-1 state during by single packing.But, omit back-sheet 3, face sheet 2, schematically represent with the shape of absorber.
Among this example 2-1, separated region r length w in the longitudinal direction rBe not particularly limited, but the length direction length w of high absorbent portion 1b in preferred consideration and the rear bBetween relation determine (with reference to Figure 17-1).For example, separated region length w in the longitudinal direction rBe preferably the length direction length w of high absorbent portion 1b in the rear bMore than 60%, more preferably greater than the length direction length w that equals high absorbent portion 1b in the rear b(w r〉=w b).Particularly, separated region length w in the longitudinal direction rUnder the situation of the such sanitary napkin of this example 2-1, be preferably 15~50mm, more preferably 20~40mm.By such setting, with sanitary napkin 30 at first at baseline k 1The place is towards the 1st overbending direction u 1When (with reference to Figure 17-2) folded, at least a portion of high absorbent portion 1b was contained in the separated region r in the rear, reduced with the eclipsed area of high absorbent portion in the place ahead.Then, with it further at baseline k 2The place is towards the 2nd overbending direction u 2Folding, because high absorbent portion 1b spatially is received in the rear, become compact individual package 100 ' (with reference to Figure 15) so can suppress local thickening.
In the sanitary napkin of this example 2-1, high absorbent portion 1a length w in the longitudinal direction in the place ahead aBe not particularly limited, but with the rear in high absorbent portion 1b length w in the longitudinal direction bThe preferred w of relation aGreater than w b(w b<w a).About high absorbent portion 1a length w in the longitudinal direction in the place ahead a, consider the absorption function of liquid etc. at the point of release G place of this convex shaped part, to be preferably set to 60~120mm as enough length, more preferably be set at 70~110mm.About high absorbent portion 1b length w in the longitudinal direction in the rear b, consider aforesaid barrier rib function, be preferably 20~75mm, more preferably 25~50mm.By such setting, in the place ahead in high absorbent portion 1a and the rear high absorbent portion 1b absorb institute's excretory menses etc. easily, and can realize fit and compact individual packaging corresponding to the body bobbing of wearer.In addition, the length direction length of separated region forms more than 60% of high absorbent portion 1b in the rear, and the length direction length of high absorbent portion 1a is than in the long preferred configuration of the length direction length of high absorbent portion 1b in the rear forwardly, become following individual packaging form, i.e. the above-mentioned baseline k of the ratio of sanitary napkin 2Although higher absorbent portion 1a is overlapping in the part in the place ahead and the place ahead, and is positively not overlapping with high absorbent portion 1b in the rear, so can make compactness and the more stable individual package of individual packaging shape.
In the sanitary napkin of this example 2-1, in the place ahead high absorbent portion 1a with maximum towards the face sheet side with height h aProtuberance (with reference to Figure 17-1).On the other hand, in the rear high absorbent portion 1b with maximum towards the face sheet side with height h bProtuberance.Their relation is not particularly limited, but as a kind of method of controlling protuberance, high absorbent portion height h in the preferred rear bHigh absorbent portion height h in<the place ahead aBy with high absorbent portion height h in the place ahead aSet De Genggao, can directly absorb from point of release G, and in many, also can tackle its discharged liquid well by high absorbent portion 1a in the place ahead, on the other hand, high absorbent portion 1b is contained in the space of separated region r easily in the rear that is folded during individual packaging.
As shown in figure 15,, consider Portability, wish to make thin individual package although front and rear overlaps after folding.For the individual package that obtains approaching, can also absorb protuberance by attenuate, but consider corresponding to the front portion absorption protuberance of excretory portion and will guarantee absorbability, preferred attenuate rear protuberance.
As mentioned above, forwardly in the at first absorbed discharged liquid of high absorbent portion 1a on the absorber 1c of lower floor, move and be held, even and then flowing liquid etc. is arranged rearward, also can be caught effectively by high absorbent portion 1b in the rear and absorb.In addition, preferred two convex shaped parts are close to along the fluctuating of health.From this viewpoint, in common sanitary napkin, particularly, high absorbent portion height h in the place ahead aBe preferably 2.5~10mm, more preferably 3~8mm.High absorbent portion height h in the rear bBe preferably 2~9mm, more preferably 2.5~7mm.In addition, high absorbent portion height h in the place ahead aWith high absorbent portion height h in the rear bDifference be preferably 0.5~5mm, 1~4mm more preferably.At this moment, the thickness h of lower floor's absorber cBe preferably 1.5~6mm, more preferably 2~5mm.In addition, among the present invention, unless otherwise specified, the thickness of absorber or the thickness at its each position (comprise above-mentioned in the height of high portion) are based on the value of measuring with the assay method shown in the embodiment described later.
Among the example 2-1, when folding, the rear part s of high absorbent portion 1b in the rear 2Rear part t with high absorbent portion 1a in the place ahead 2Overlapping opposite to each other.For the thickness to this lap also suppresses as much as possible, other method as the control protuberance among this example 2-1, makes the rear part t of high absorbent portion 1a in this place ahead 2Projecting height and its place ahead part t 1Projecting height compare and step-down (with reference to Figure 17-2) obliquely.On the other hand, for high absorbent portion 1b in the rear, also be to make its height divide s from front part 1To rear part s 2Step-down obliquely.Promptly, according to this form, mutually the mode on top being tackled with the taper part when folding makes in the rear among the high absorbent portion 1b and the place ahead high absorbent portion 1a overlapping, even so have overlapping, also can suppress local thickening, and from the rear high absorbent portion 1b, it is low especially that its front part is divided, can guarantee sufficient height, so constituted good obstruct face.
Method as control (reduction) bump height, the method of above-mentioned control maximum height and the method for the inclination of control lap are illustrated, this method can be used separately, also can be used in combination, relevant inclination, can only handle high absorbent portion in the rear, the angle of relevant inclination or the length of inclination also can increase high absorbent portion in the rear.
In the sanitary napkin of this example 2-1, on separated region r, formed the depressed part 19 that becomes mortar shape depression 19 '.This depressed part 19 is circular-arc when overlooking, and in other words, has crescent shape or parabolic shape, makes its protuberance towards article the place ahead and its inboard is disposed towards the article rear.And, dispose according to the contacted mode of forward end of high absorbent portion 1b in the curved interior of this circular-arc depression and the rear.By such configuration, the part that is provided with depressed part 19 is because different with its peripheral flexural rigidity, so become the starting point of bending easily, high absorbent portion 1b can not bend in the rear, therefore, can make position become bending baseline k more accurately near the forward end of high absorbent portion 1b in this rear 1Fold.Like this in order to make desired position become bending baseline and be pre-formed depression, thus for example aspect size in the rear high absorbent portion can successfully be contained in by in the folding space that is produced, promptly can on the position of its design, make it become bending baseline k 1Fold, from but preferred.And, by in separated region r, forming bending baseline k by intention 1, sanitary napkin 30 can not fold on high absorbent portion 1a and the 1b in front and back, so be difficult for bringing the influence of the crease on the high absorbent portion 1b among the high absorbent portion 1a and rear in the place ahead, promptly be difficult for causing the destruction of convex shaped part or creasing when dressing residual etc.In addition, among the present invention, so-called " in high absorbent portion be contained in (in the space of regulation) ", be meant under the state that absorbent commodity is folded, its convex shaped part is not overlapping with other convex shaped part, perhaps only overlap, in high absorbent portion want portion's (being preferably more than half) to enter into to separate before and after the separated region of high absorbent portion in, and the thickness of this part of article has obtained inhibition when overlapping to pushing up each other than convex shaped part.
The shape of depressed part 19 is circular-arc when preferably overlooking as described above.Circular-arc by being arranged to, make at least a portion be contained in folding line k such in the above-mentioned separated region r easily with high absorbent portion 1b in the rear 1Form as baseline along the shape of depressed part 19.And by making depressed part 19 bring in formation in the place ahead of high absorbent portion in the rear as described above, can improve the introducing effect towards the absorber 1c of lower floor of the liquid of being caught by the face of obstruct H (this obstruct face H has utilized the wall of this convex shaped part of configuration herein), be preferred from this viewpoint.The degree of depth of depressed part 19 is preferably the degree of depth of enough flexible this degree that can obtain the absorber 1c of lower floor.Depressed part 19 for example can form by the heat embossing method as described as follows.That is, use and to possess the heat embossing device that on periphery, has the backing roll that disposes in opposite directions corresponding to the knurling rolls of the convex strip portions of the shape of depression with the periphery of knurling rolls.With absorber and face sheet according to the face sheet side is inserted between two rollers in the mode of knurling rolls side.Then, they are heated integratedly and pressurize, thereby form depression.In addition, beyond the heat extraction embossing, can also wait and form by ultrasonic wave embossed method, high frequency embossing.
Figure 18 is the profile of schematically representing after the periphery of the depression shown in Figure 17-1 is amplified.Disposing thickness overleaf on the sheet material 3 is h cAbsorber 1c, and then form high absorbent portion 1b in the rear in the above, and cover with face sheet 2.As mentioned above, depressed part 19 approaches that high absorbent portion disposes in the rear, at its width w dThe central bending baseline k that forms 1The length direction width w of depressed part 19 dBe preferably 3~25mm, more preferably 5~20mm.The length 1d (with reference to Figure 19) of depressed part 19 on width is preferably 20~50mm, more preferably 25~40mm.
Figure 19 is the vertical view of schematically representing for the configuration relation of high absorbent portion 1b in high absorbent portion 1a, the rear in the plan view shape of understanding the depression among this example 2-1 and the absorber 1c of lower floor, the place ahead and with them.As mentioned above, depressed part 19 bends to circular-arc, has protuberance 19f and medial part 19r.Make this protuberance 19f towards the place ahead 10c direction, and in the medial part 19r place of bending and rear high absorbent portion 1b adjacency.The inside of depressed part 19 forms the state that more caves in than its periphery on the whole, and, in its zone, formed the surface configuration that rises and falls by embossing processing, in the middle of the depression also regularly and the part 19m that has roughly equally spaced formed low (deeply) (corresponding to the impression 19a of first embodiment~19e) and the part 19n of height (shallow).In addition, make the summit of embossing protuberance be lower than the surface of the absorber 1c of lower floor.
Here, the folded form to the sanitary napkin in the individual package of this example 2-1 is described in detail.Among this example 2-1, at bending baseline k 1In the rear of the sanitary napkin of place bending in high absorbent portion 1b and the place ahead high absorbent portion 1a contact and be contained in separated region interior (with reference to Figure 17-2) opposite to each other.
On the other hand, when do not have separated region, in high absorbent portion when forming in the mode of front and back one, before and after when folding in high absorbent portion overlap each other, in the individual package in the thickness of high absorbent portion be approximately in the place ahead thickness h of high absorbent portion aWith the rear thickness h bThe h of sum a+ h bIn addition, for example in high absorbent portion from the place ahead veutro up to the individual package of the sanitary napkin that the rear dorsal part forms a succession ofly, because in any case folding line all can be configured on the convex shaped part, so in can form broken line on the high absorbent portion and be out of shape, thereby also have harmful effect to dressing comfort or absorbability.
Contrast with it, among this example 2-1, with reference to Figure 17-2 as can be known, the THICKNESS CONTROL of absorber convex shaped part that can be when folding is h roughly aAnd example 2-1 is owing to be that position on non-convex shaped part is folding, so the influence of creasing is little.As a result, the wearing comfort when taking out the back installation from individual package is good, and the absorption seepage that causes because of shriveling of absorber also can be inhibited.Particularly, high absorbent portion and play that high absorbent portion branchs building site on function disposes in the rear of the effect that absorbs the blocking part that leaks the back or stop portion in direct requirement the place ahead near the absorbing power of the more menses the point of release.And the convex shaped part of front and back is arranged to be close to the recessed position of the health of wearer respectively, is positioned at their intermediary separated regions along the less position configuration of the body bobbing of wearer, can obtain the close property high with skin as a whole.That is,, can flexibly be affixed on the skin of wearer owing to the resiliency of convex shaped part, thereby obtain good wearing comfort because necessary position firmly is close to and can be obtained desired absorbability.
Below, as another preferred configuration (example 2-2) of second embodiment of the invention, to have roughly rectangular shape that two above-mentioned upper surfaces do not tilt in the individual package of sanitary napkin of high absorbent portion describe.Figure 20-the 1st, the profile of the sanitary napkin 40 among the example 2-2, Figure 20-the 2nd, the profile of the state when schematically the sanitary napkin shown in the presentation graphs 20-1 is by single packing.Among Figure 20-2, high absorbent portion 1a, 1b are not overlapping fully in two, and 1b is contained in the separated region r fully.Thus, even the shape that upper surface does not tilt, the THICKNESS CONTROL of absorber convex shaped part that also can be when folding is h roughly aHigh absorbent portion eclipsed example each other in Figure 20-1,20-2, having represented not have fully when folding, but at least a portion of high absorbent portion 1b is contained in the separated region r and gets final product in the rear, consider absorbent properties etc., when folding as required in the eclipsed form of a part of high absorbent portion also can suitably adopt.
The individual package of the absorbent commodity of second embodiment of the invention is not limited to each above-mentioned example, can be with their structure appropriate combination, or the structure different with it is also passable.For example consider close property and anti-leakage with skin, can make also in the place ahead that high absorbent portion changes in the high absorbent portion and rear, among for example above-mentioned example 2-1 in the place ahead high absorbent portion be to form rectangle, high absorbent portion is to be arranged to towards article rear portion 10d tapered trapezoidal (with reference to Figure 16, Figure 19) in the rear, being close to human body thus easily more, is preferred from this viewpoint.At this moment, preferred its base of high absorbent portion is provided with widelyer than high absorbent portion in the place ahead in the trapezoid rear.In addition, high absorbent portion can also adopt triangle or rectangle in the rear.
And then following example also is preferred: promptly select in the place ahead the plan view shape of high absorbent portion in the high absorbent portion and rear, make in that both are chimeric on in-plane when folding for individual packaging.The Figure 21 that has represented this example is a vertical view of schematically representing the shape of the absorber in the sanitary napkin of another preferred example (example 2-3) of second embodiment of the invention.This Figure 21 is the schematic vertical view corresponding to Figure 19 of example 2-1.High absorbent portion 1a has the jag t outstanding towards the article rear in the place ahead that is provided with on the absorber 1c of lower floor 3Corresponding with it, high absorbent portion 1b has recess (notch portion) s recessed towards the article rear in the rear 3By such setting, at bending baseline k 1When the place was folding, high absorbent portion was disposed at 1d in the rear, the jag t of high absorbent portion 1a in the place ahead 3Recess (notch portion) s with high absorbent portion in the rear 3Chimeric, make convex shaped part not overlap each other.
Figure 22 (a) and (b) in represented on separated region, to have formed when overlooking outstanding towards the rear and become the vertical view and the profile of sanitary napkin 50 of the depressed part 19 of convex.This Figure 22 (a) and (b) shown in be variation, and the sanitary napkin that further schematically shows of example shown in Figure 15.In addition, for the relation of the vertical view of understanding Figure 22 (a) easily and profile (b), add boost line a~f, and represent face sheet, back-sheet and the article profile of drawing by them with chain-dotted line.
Shown in above-mentioned Figure 22 (a), the depressed part 19 of " く " font by forming convex towards the rear, the interval of the depression of width narrows down, the thickness attenuation of lower floor's absorber like this, high absorbent portion partly is accommodated in this part in the rear, so the shape of the sanitary napkin under the individual packaging state is stable easily.
As the shape (variation) of the depression of the separated region that can show effect same, shown in Figure 22 (c), (i) U word shape, the (ii) such form of Ha word shape are arranged, can also be as come direct thickness thinning (iii) or (iv) by caving in.Like this depressed part of Xing Chenging easily with baseline configuration on the depressed part that is positioned at rear side, just be provided with like this and easily high absorbent portion in the rear be accommodated in the separated region, be preferred from this viewpoint.Depressed part among Figure 22 (c) is to form with the form in the almost whole zone that spreads all over separated region, the baseline of bending is formed at the length direction rear side of depressed part easily, but in order to be formed at more rear side easily, preferably in being formed into the place ahead till the side of high absorbent portion 1a.In addition, the depressed part of above-mentioned variation can be as shown be made of the compression unit of wire like that, also can high compression portion and low compression portion be set continuously alternately and form wavy on section.
Below, each member that uses in above-mentioned each example is described.
Face sheet preferably constitutes by the liquid permeability and to the material of the soft-touch of skin.For example can use with natural fibers such as cottons as the non-woven fabrics of material or various synthetic fibers are implemented fiber that hydrophilicity-imparting treatment obtain non-woven fabrics as material.Back-sheet preferably is made of the sheet material of liquid impermeability.Back-sheet can also be the sheet material of water vapo(u)r transmission as required.Particularly, in order to obtain sufficient water vapo(u)r transmission, the plastic thin film such as polyethylene that preferred use will be dispersed with the micropowder that is made of fillers such as calcium carbonate stretch and have formed the porous film in fine hole.In addition, absorbent commodity also can have the side sheet material.As the side sheet material, can list non-woven fabrics, thin-film sheet, paper etc.From the viewpoint of anti-leakage, preferably wait and form the side sheet material by the thin-film sheet of the hydrophobicity non-woven fabrics of liquid impermeability or difficult permeability, anti-leakage.Above-mentioned sheet material can be one, also can be further with combinations such as functional sheet materials and be arranged to more than 2.Formation material as absorber can use the material that uses in the common absorbent commodity.Particularly, for example can use fiber assembly or itself and macromolecule water uptake polymer and with the material that obtains etc.Fiber as constituting fiber assembly can use hydrophilic natural fiber, synthetic fibers (being preferably the fiber of having implemented hydrophilicity-imparting treatment) etc. such as paper pulp fiber.Among the present invention, because the high absorption portion setting of turning up the soil in high absorbent portion and the rear in the place ahead, so can also use different absorbent material at two convex shaped parts.For example can be that high absorbent portion uses in the paper pulp series fiber rear high absorbent portion to use synthetic fibers etc. because of paying attention to fit because of paying attention to absorbability in the place ahead.
Absorbent commodity of the present invention is not limited to the concrete formation of above-mentioned sanitary napkin, for example can also further use other functional member or structure.In addition, among the present invention, absorbent commodity is not particularly limited to comprise the absorption articles with liquid etc., but is preferably sanitary napkin, underwear back boxing (sanitary pad) or incontinence pad etc.
Embodiment
Below, according to embodiment first embodiment of the invention is further described, but the present invention does not explain thus with limiting.
(embodiment)
As face sheet, the preparation weight per unit area is 25g/m 2, thickness is the non-woven fabrics of the liquid permeability of 0.3mm.As lower floor's absorber, prepare following absorber: in the paper pulp fiber aggregation, add the powder of absorbable polymer (SAP), and it is wrapped up with fibre sheet material, make that weight per unit area is 300g/m 2, thickness is 3.5mm.Corresponding with it, preparing weight per unit area with same material is 500g/m 2, thickness is the upper strata absorber of 5.5mm, and paste assembling and make absorber with high absorbent portion in the place ahead and the rear with above-mentioned lower floor's absorber.As the side sheet material, the weight per unit area of preparing the liquid impermeability is 20g/m 2, thickness is the non-woven fabrics of 0.2mm.As back-sheet, preparation is equipped with non-woven fabrics on the outer surface of the porous sheet material of liquid impermeability and thickness is the breathability sheet material of 0.3mm.In addition, the Determination of thickness of above-mentioned absorber is to use the made thickness gauge of the rugged making of Co., Ltd.'s tail " PEACOCK UPRIGHT DIAL GUAGE No.207 " (trade name), at 5g/cm 2Load carries out down.5 samples are measured, calculated its meansigma methods as thickness.The Determination of thickness of other sheet material is to use the made thickness gauge of the rugged making of Co., Ltd.'s tail " PEACOCKUPRIGHT DIAL GUAGE No.25 " (trade name), at 8g/cm 2Load carries out down.5 samples are measured, calculated its meansigma methods as thickness.
Make up above-mentioned face sheet, absorber and side sheet material, on the part of necessity, utilize embossing or heat fusing etc. to implement to engage processing, thereby make the sanitary napkin of form shown in Figure 1.But, the embossed portion (impression) that becomes rigid region this moment is arranged to pattern A shown in Figure 12.In addition, separatedly also made the sanitary napkin that constitutes rigid region by the embossed portion (impression) of being arranged to pattern B~I shown in Figure 12 respectively.
(comparative example)
Similarly made sanitary napkin with the foregoing description.But, do not have the embossing that is equivalent to pattern A~I is set, make the sanitary napkin of no rigid region.
With sanitary napkin such as Figure 13 of making in embodiment and the comparative example with carry out individual packaging with package sheet material as shown in Figure 14, and leave standstill a few days.Then, untie the packing of each individual package, with residual folding line on the folding position of visual valuation rigid region and the part suitable with it.Evaluation is distinguished folding position " the residual folding lines in substantial middle place of article " and " holding up folding line residual in the rivel portion " come respectively and is estimated judgement.Evaluation is to be undertaken by 3 participants.Evaluation result is that good result begins to divide into successively " ◎ ", " zero ", " △ ", " * " from the pass of estimating and dressing performance, and is shown among Figure 12 according to the depth or the state of folding line.In addition, the result of comparative example is not shown among the figure, but the article central authorities and the evaluation of holding up the folding line of rivel portion are the result of " * ".
Absorber result partly to above-mentioned result of the test further describes below." ◎ " expression does not almost have a residual folding line, and " zero " expression does not almost form folding line, and " △ " although expression has formed folding line, if stretching folded part then become not obvious, " * " expression has obviously formed folding line, even and stretch and leave vestige yet.Particularly the sanitary towel of comparative example is different with the sanitary towel of embodiment except the state of folding line, has beyond the darker wire folding line, and it also leaves in a large number along the folding line of the gauffer shape of a plurality of irregular directions extensions.
The relevant state of holding up rivel part, " zero " expression are holded up rivel and are not almost collapsed flatly, and " △ " expression rivel has slightly and collapses flatly, but not obvious, " * " expression rivel has partly produced deformation, and rivel collapses flat, and it is unstable that shape becomes.

Claims (10)

1. the individual package of an absorbent commodity, it is absorbent commodity that the fore-and-aft direction along wearer is elongate shape and the individual package of the absorbent commodity that obtain folding with packaging material, described absorbent commodity has back-sheet and the absorber between described two sheet materials in the face sheet of surface one side that contacts with skin, surface one side that do not contacting with skin, wherein
Has in the place ahead that forms with the surface one side protuberance of skin contact high absorbent portion in the high absorbent portion and rear at described absorber; Absorber part in described two between the high absorbent portion is provided with rigid region; Described rigid region is constituted as the zone of containing depressed part; Described depressed part is by forming described face sheet and described absorber compression engagement; And; When running through the line of described rigid region along standardized of width; Must there be arbitrary part of described depressed part to be present on the described line
Described absorbent commodity is that the position with described rigid region is that the folding position folds.
2. the individual package of absorbent commodity according to claim 1, wherein, depressed part in the described rigid region is made of a plurality of impressions of arranging along the width of described absorbent commodity, and the shape of the continuous lines of drawing out in the mode of the rear end that connects described a plurality of impressions is the shape or the undaform shape of drawing out the arc of curvature of protrusion towards rear side.
3. the individual package of absorbent commodity according to claim 1 and 2, wherein, both sides at the width of described absorber are equipped with the leakproof wall, this leakproof wall is surrounded by the cavity and holds up towards the skin side of wearer in inside, and alongst extend, a base end part on the width section of described leakproof wall by or be not fixed in the side upper surface of the width of described absorber by other member.
4. the individual package of absorbent commodity according to claim 1 and 2, wherein, both sides at the width of described absorber are equipped with the leakproof wall, this leakproof wall is holded up towards the skin side of wearer, and alongst extend, successive mode sets described leakproof wall in a face that planar elastic telescopic portion constitutes by the planar basal wall portion of holding up from described absorption side with the upper end-face edge with this planar basal wall portion.
5. according to the individual package of each described absorbent commodity in the claim 1~4, wherein, be the folding position with near position near the rear end of high absorbent portion in position and the described rear front end of high absorbent portion in the position of described rigid region, described the place ahead respectively, described absorbent commodity is folding towards same direction successively from a side of this article length direction, so that this article face side becomes the inboard.
6. the individual package of an absorbent commodity, it is that absorbent commodity is folding with packaging material and the individual package of the absorbent commodity that obtains, described absorbent commodity has face sheet, back-sheet and the absorber between described two sheet materials, wherein, on described absorber, has in the place ahead of the skin side of wearer protuberance high absorbent portion in the high absorbent portion and rear, high absorbent portion is disposed at the place ahead veutro and the rear dorsal part of wearer dividually in described two across separated region, described absorbent commodity is folded at the crooked place place that is positioned at described separated region, under this state that is folded, all or part of of high absorbent portion is contained in the described separated region in the described rear.
7. the individual package of absorbent commodity according to claim 6, wherein, the bump height of the rear section of high absorbent portion is lower than the bump height of the front part of high absorbent portion in this place ahead in described the place ahead, in the described rear in the part of high absorbent portion and described the place ahead the rear section of high absorbent portion overlapping.
8. according to the individual package of claim 6 or 7 described absorbent commodities, wherein, separated region at described absorber is formed with depressed part, this depressed part forms by contracting from one side pressure of skin face, and with described absorber and described face sheet joint, this depressed part becomes described crooked place.
9. according to the individual package of each described absorbent commodity in the claim 6~8, wherein, described depressed part has circular-arc shape in the article vertical view, this depressed part disposes in the following manner: make it bend to circular-arc ledge towards article the place ahead, and make it bend to that circular-arc inside part is arranged near the front edge of the high absorbent portion in described rear or with the front edge portion adjacency of described high absorbent portion.
10. according to the individual package of each described absorbent commodity in the claim 6~9, wherein, the bump height of high absorbent portion is lower than the bump height of high absorbent portion in described the place ahead in the described rear.
CN200910206417.2A 2008-11-13 2009-11-12 Single package of absorbent article Active CN101732136B (en)

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JP2008291284A JP2010115368A (en) 2008-11-13 2008-11-13 Individual package of absorbent article
JP2008291975A JP5215819B2 (en) 2008-11-14 2008-11-14 Absorbent package
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CN106794081A (en) * 2014-10-01 2017-05-31 尤妮佳股份有限公司 Absorbent commodity
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CN102805688A (en) * 2012-08-09 2012-12-05 金红叶纸业集团有限公司 Absorbing article
CN106794081A (en) * 2014-10-01 2017-05-31 尤妮佳股份有限公司 Absorbent commodity
CN106794079A (en) * 2014-10-01 2017-05-31 尤妮佳股份有限公司 Absorbent commodity
CN106794081B (en) * 2014-10-01 2020-06-02 尤妮佳股份有限公司 Absorbent article
CN107106378A (en) * 2014-12-26 2017-08-29 尤妮佳股份有限公司 Absorbent commodity
CN107106378B (en) * 2014-12-26 2020-12-11 尤妮佳股份有限公司 Absorbent article
CN107847375A (en) * 2015-06-30 2018-03-27 尤妮佳股份有限公司 Absorbent commodity
CN107847375B (en) * 2015-06-30 2019-11-05 尤妮佳股份有限公司 Absorbent commodity
CN108883003A (en) * 2016-12-26 2018-11-23 花王株式会社 The individual package of absorbent commodity
CN108883003B (en) * 2016-12-26 2019-10-29 花王株式会社 The individual package of absorbent commodity
CN107088116A (en) * 2017-06-27 2017-08-25 松嘉(泉州)机械有限公司 A kind of new drawing carries formula sanitary napkin manufacturing machine
CN111405886A (en) * 2017-11-28 2020-07-10 花王株式会社 Absorbent article package and method for manufacturing absorbent article package

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