CN201029993Y - Absorbability article - Google Patents
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- CN201029993Y CN201029993Y CNU2006201734130U CN200620173413U CN201029993Y CN 201029993 Y CN201029993 Y CN 201029993Y CN U2006201734130 U CNU2006201734130 U CN U2006201734130U CN 200620173413 U CN200620173413 U CN 200620173413U CN 201029993 Y CN201029993 Y CN 201029993Y
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- sheet
- bakie
- absorbent
- absorbing
- compression portion
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Abstract
Provided is an article with absorbing property (1). The utility model comprises an absorbing layer (A) which is formed by the lamination of a front sheet (2) made of bulky nonwoven fabrics and an absorbing sheet (4) with low compressive deformation property, one lateral of a skin contacting surface of the absorbing layer (A) is provided with a leak-proof groove (6) which is in a continuous wire extension shape when being overlooked. The absorbing layer (A) is compressed along the width direction to ensure the front sheet (2) and the absorbing sheet (4) to be combined, simultaneously, at least the depression of the front sheet (2) forms the leak-proof groove (6). On the front sheet (2), a highly compressed portion (62) and a lowly compressed portion (61) are in cross arrangement along the extending direction of the leak-proof groove, and a condensation and rarefaction gradient is formed from the lowly compressed portion (61) to the highly compressed portion (62). According to the article with absorbing property of the utility model, the leak-proof groove is arranged on the absorbing layer via compression processing, thereby the absorbed liquid in the absorbing layer has perfect diffusion property even through the utility model is under the circumstances of repeatedly absorbing liquid and absorbing large amount of liquid in a short time.
Description
Technical field
This utility model relates to absorbent commodities such as sanitary napkin, underwear back boxing, sanitary pad, incontinence pad.
Background technology
As prior art, known absorbed layer at absorbent commodities such as sanitary napkins (duplexer of face sheet and absorber) is gone up the technology (reference example such as spy open flat 9-108262 communique) that anti-bakie is set by compression process.On the sanitary napkin of putting down in writing in this communique, anti-bakie is by compression process absorbed layer on thickness direction, thereby makes absorber depression and form, and the thickness of face sheet itself keeps roughly uniform state.Therefore, at the Liquid Absorption initial stage, liquid enters in the fibre structure of absorber or liquid is absorbed into and absorbs intravital water absorbent polymer, brings into play the effect of liquid diffusion thus.
But, open in the sanitary napkin of putting down in writing in the flat 9-108262 communique the spy, when absorbing a large amount of liquid when absorbing liquid repeatedly and in the short time, because full of liquid in the fibre structure of absorber, or water absorbent polymer produces swelling, therefore, the space that is used for the liquid diffusion disappears, thereby the liquid diffusibility descends easily.
The utility model content
Therefore, the purpose of this utility model provides a kind of absorbent commodity that is provided with anti-bakie on absorbed layer by compression process, wherein, even absorbing liquid repeatedly and absorbing in the short time under the situation of a large amount of liquid, the liquid that absorbs in the absorbed layer also has good diffusibility.
This utility model has been realized above-mentioned purpose by following absorbent commodity is provided, be that described absorbent commodity has the stacked and absorbed layer that forms of the low absorbent sheet of the face sheet that will be made of bulk non-woven fabrics and compression, skin contact surface one side at described absorbed layer is provided with the anti-bakie that is continuous wire extension when overlooking, described anti-bakie is that described absorbed layer is being carried out compression process and when described face sheet and described absorbent sheet are become one along thickness direction, by described face sheet depression is formed, on described face sheet, high compression portion and low compression portion are alternately arranged on the bearing of trend of described anti-bakie, have formed the density gradient from described low compression portion towards described high compression portion.
According to absorbent commodity of the present utility model, on absorbed layer, be provided with anti-bakie by compression process, even therefore absorbing liquid repeatedly and absorbing in the short time under the situation of a large amount of liquid, the liquid that absorbs in the absorbed layer also has good diffusibility.
Description of drawings
Fig. 1 is the vertical view of expression as the sanitary napkin of an embodiment of absorbent commodity of the present utility model.
Fig. 2 (a) and Fig. 2 (b) are the II-II profiles shown in Fig. 1.
Fig. 3 (a) is the vertical section axonometric chart of the face sheet of the sanitary napkin shown in the presentation graphs 1.
Fig. 3 (b) is the B-B profile shown in Fig. 3 (a).
Fig. 4 is the vertical view of the sanitary napkin of another embodiment of expression.
The specific embodiment
Below, absorbent commodity of the present utility model is described with reference to accompanying drawing according to the sanitary napkin of an embodiment preferred.
Shown in Fig. 1, Fig. 2 (a) and Fig. 2 (b), the sanitary napkin 1 of the present embodiment has the low absorbent sheet of the face sheet 2 that will be made of bulk non-woven fabrics and compression 4 stacked and absorbed layer A that forms and the back-sheet 3 that is provided in non-skin contact surface one side of absorbed layer A.
In addition, unless otherwise specified, when then mentioning " length direction " and " width ", refer to " length direction of absorbent commodity " and " width of absorbent commodity " respectively in this description.When mentioning " upper surface " and " lower surface ", refer to " skin contact surface (face of a side) " and " non-skin contact surface (face of a side) " respectively.
Edge part stretches out before and after the length direction of absorbent sheet 4 face sheet 2 and back-sheet 3 have formed the end wing (end flap) F1, the end wing F1 edge part before and after described length direction that is bonded with each other, thus formed the S1 of end seal portion of semicircle arcuation.The face sheet 2 and the back-sheet 3 of stretching out from the width both sides of the edge portion of absorbent sheet 4 have formed flank (side flap) F2, flank F2 is bonded with each other in described width both sides of the edge portion with side leakage prevention member 5, thereby has formed the S2 of side seal portion towards the width inside bend.
Edge part engages with face sheet 2 by the leakproof wall sealing S3 that extends in the longitudinal direction before and after the length direction of side leakage prevention member 5.Be formed with the pocket portion of side opening in width at the length direction central part of the side leakage prevention member 5 that does not have leakproof wall sealing S3.
The lower surface of sheet material 3 is provided with the fixedly bonding part of usefulness (not shown) of underwear overleaf.
Described concavo-convex sheet material can obtain by following method: heat fusing is bonding partly to make first fibrous layer 21 that is made of fiber assembly and second fibrous layer 22 pattern according to the rules by heat embossing, makes the 22 along continuous straight runs thermal contractions of second fibrous layer then.
Specifically, adopt bonding for example following the carrying out of heat fusing of heat embossing: first fibrous layer, 21 1 side pressures in the duplexer of embossing face (circumferential surface of knurling rolls etc.) that rule is equipped with a large amount of embossing pins and first fibrous layer 21 and second fibrous layer 22 are connect, thereby make by the formation fibers melt of first fibrous layer 21 at each hot pressed position of pin and/or second fibrous layer 22.The thermal contraction of second fibrous layer 22 is for example following to be carried out: make second fibrous layer 22 be made of the heat-shrinkable fiber or make in advance in second fibrous layer 22 and contain the heat-shrinkable fiber, make first fibrous layer 21 and second fibrous layer adherent while of 22 heat fusings or make both heat fusings bonding after, second fibrous layer 22 is carried out heat treated.A large amount of protuberances 24 is by making the 22 along continuous straight runs thermal contractions of second fibrous layer, producing thereby the position beyond the heat fusing bonding part in first fibrous layer 21 23 is deformed into convex.
A large amount of heat fusing bonding parts 23 is loose point-like and indentation and forms regularly, heat fusing bonding part 23 each other apart from constant.
It is spherical that each protuberance 24 forms semicircle respectively, and its inside has been full of the fiber that constitutes first fibrous layer 21.In addition, form first fibrous layer 21 in the part of each protuberance 24 and the interface between second fibrous layer 22 and be not bonded together, but formed the state of driving fit.
The formation fiber of first fibrous layer 21 does not preferably have heat-shrinkable in fact or the fiber of thermal contraction does not take place below the heat shrink temperature of the formation fiber of second fibrous layer 22 described later.
Formation fiber as second fibrous layer 22 is preferably the fiber that is constituted and had heat-shrinkable by thermoplastic, polymeric materials.In addition, this formation fiber behavior of body that preferably after contraction, also demonstrates flexibility.As the example of above-mentioned fiber, can list the potential crimping property fiber.Potential crimping property fiber in second fibrous layer 22 contain proportional 40～100 weight % that are preferably.The potential crimping property fiber is can similarly handle with fiber with non-woven fabrics in the past before being heated, thereby and shows spiral helicine curl by the heating under the set point of temperature and have the fiber of retractable property.By using the potential crimping property fiber, can show heat-shrinkable and elastomeric behavior simultaneously.
The potential crimping property fiber is for example by being that the eccentric core-sheath-type of composition or the composite fibre of parallel type constitute with two kinds of different thermoplastic, polymeric materials of shrinkage factor.As its example, can list the spy and open flat 9-292325 communique and specially permit the fiber of putting down in writing in No. 2759331 description.Second fibrous layer 22 for example contains aforesaid potential crimping property fiber in advance, itself and first fibrous layer 21 is being carried out adherent while of heat fusing or thereafter, makes it show curling of this fiber and produce and shrink by heating.Like this, the part of face sheet 2 formation fiber also can use the potential crimping property fiber to form.
For the anti-bakie 6 (back detailed description) that forms enough degree of depth, with difference of height and the density gradient between the summit that forms low compression portion 61 in the anti-bakie 6 and high compression portion 62, the thickness of face sheet 2 preferably has the thickness of appropriateness, particularly, be preferably more than the 0.5mm, more preferably 0.5～2.0mm.
Although absorbent sheet 4 has absorbability, thin thickness is to the compression of the compression of the thickness direction sheet material of extremely low (also being difficult to distortion even be compressed).In addition, absorbent sheet 4 is to have following inflexible sheet material, if promptly be applied in big compression stress, even if some depression is then arranged, the degree of depression is also little, and has bored a hole with regard to producing the press-bending distortion before that.
As aforesaid sheet material, can list the absorbent sheet (reference example such as spy open flat 8-246395 communique) that for example forms at the inside of a piece of paper decentralized configuration water-absorbent polymer particles.Such absorbent sheet for example can be by scattering water-absorbent polymer particles on the moistening fleece of manufacturing paper with pulp in wet type, and overlapping thereon paper is dry and integrated and obtain with their then.
In addition, as absorbent sheet 4, can list the compound and absorbent sheet (reference example such as spy open flat 11-93073 communique) that obtains of the water absorbent polymer that utilizes polymerization will constitute fiber and polymerism.Such absorbent sheet for example can be by making the water absorbent polymer that contains polymerism fraction attached on the non-shaped fibers, make their polymerizations again and obtain.
In addition, absorbent sheet 4 also can form by following method: be clipped in water absorbent polymer between two paper or the non-woven fabrics or be clipped between the paper or non-woven fabrics that turns back, push then that it is whole and carry out integrated.
As water absorbent polymer, can use the various water absorbent polymers of the formation method that is fit to absorbent sheet 4.
The content of the water absorbent polymer in the absorbent sheet 4 of the downside of anti-bakie 6 (back detailed description) is preferably more than 25%, more preferably more than 30%.This content is to be benchmark with the quality.If the content of water absorbent polymer is high, the then compression reduction of absorbent sheet 4 integral body is preferred from this viewpoint.
As back-sheet 3, be not particularly limited, in the present embodiment, use the thin-film sheet of anti-leakage.As side leakage prevention member 5, can list non-woven fabrics and thin-film sheet, paper etc., from the viewpoint of anti-leakage, preferably use the hydrophobicity non-woven fabrics of liquid impermeability or difficult permeability, the thin-film sheet of anti-leakage etc., use the hydrophobicity non-woven fabrics in the present embodiment.
As shown in Figure 1, skin contact surface one side at absorbed layer A is provided with the anti-bakie 6 that is continuous wire extension when overlooking.The plan view shape of the anti-bakie 6 in the present embodiment is ring-types, specifically is track and field runway (track) shape (the semi arch curve is connected with the straight line of pair of parallel and the ring-type that forms).The length direction central part in the zone of the position of the anti-bakie 6 in the present embodiment between a pair of side leakage prevention member 5,5.The width of anti-bakie 6 is preferably 0.5～5.0mm.
Shown in Fig. 2 (a) and Fig. 2 (b), face sheet 2 and absorbent sheet 4 engage by anti-bakie 6.Specifically, anti-bakie 6 is that absorbed layer A is being carried out compression process and when face sheet 2 and absorbent sheet 4 are become one along thickness direction, forms by face sheet 2 depressions at least.And on face sheet 2, high compression portion 62 and low compression portion 61 are alternately arranged on the bearing of trend of anti-bakie 6, and 62 have formed the density gradient from low compression portion 61 towards high compression portion.
The integrated form of face sheet 2 and absorbent sheet 4 is according to their material and integral method etc. different and different, for example have melt bonded, press sticking, fiber interweaving.
If along thickness direction absorbed layer A is carried out compression process, then the face sheet 2 that is made of bulk non-woven fabrics caves in easily, and produces plastic deformation under this state.On the other hand, the low absorbent sheet 4 of compression does not cave in fact, and the part discontinuous (off and on) on the bearing of trend of anti-bakie 6 that perhaps is positioned at the downside of high compression portion 62 caves in and the generation plastic deformation.
Particularly, anti-bakie 6 has shown in Fig. 2 (a) face sheet 2 depressions like that only and the form that forms and face sheet 2 and absorbent sheet 4 boths depressions and the form of formation like that as Fig. 2 (b) shown in.
In the anti-bakie 6 that forms in 2 depressions of the only face sheet shown in Fig. 2 (a), the absorbent sheet 4 of the downside of the high compression portion 62 of anti-bakie 6 is not easy perforation when compression process.In addition, face sheet 2 is not easy filming when compression process.
In the anti-bakie 6 that forms in the face sheet 2 shown in Fig. 2 (b) and absorbent sheet 4 boths depressions, the face sheet 2 of high compression portion 62 that forms anti-bakie 6 is owing to be compressed under heavily stressed, so might produce filming.In this case, absorbability sheet material 4 absorbs via low compression portion 61 to flow into liquid in the high compression portion 62.
In whole absorbent commodity, anti-bakie 6 can be only by the form shown in Fig. 2 (a) or only forms by the form shown in Fig. 2 (b), also can two kinds of forms mix formation.
The degree of depth (difference of height between the summit of the summit of face sheet 2 and the high compression portion 62) H1 of anti-bakie 6 is preferably 0.5～5.0mm, more preferably 1.0～4.0mm.
The method that forms aforesaid " face sheet 2 must cave in; simultaneously absorbent sheet 4 does not cave in fact or the anti-bakie 6 of absorbent sheet 4 discontinuous depression on the bearing of trend of anti-bakie 6 " is not particularly limited, and for example can list following method.
Use is provided with the compression roller (not shown) of press section, and this press section has the corresponding concaveconvex shape of shape with low compression portion 61 of preventing bakie 6 and high compression portion 62.Do not have formation to prevent front one side of the absorbed layer A of bakie 6 with described compression roller extruding, carry out heat seal processing.Here, in order on face sheet 2, to form the anti-bakie 6 that high compression portion 62 and low compression portion 61 are alternately arranged, must suitably set processing conditions.The condition of particular importance is shape (highly, width, concaveconvex shape etc.), squeeze pressure, heating-up temperature (heat seal temperature), the extrusion time of press section.
In the sanitary napkin 1 of the present embodiment, absorbed layer A is that the low absorbent sheet of the face sheet 2 that will be made of bulk non-woven fabrics and compression 4 is stacked and form.Therefore, absorbed layer A is carried out compression process and when making face sheet 2 and absorbent sheet 4 form one along thickness direction, face sheet 2 caves in easily and produces plastic deformation, forms whole (forms shown in Fig. 2 (a)) or the part (form shown in Fig. 2 (b)) of the anti-bakie 6 of continuous wire.On the other hand, absorbent sheet 4 is because compression is low, so when absorbed layer A is carried out compression process, even if surficial sheets 2 caves in easily, absorbent sheet 4 does not cave in fact (form shown in Fig. 2 (a)) yet, and perhaps discontinuous (off and on) caves in and produce plastic deformation (form shown in Fig. 2 (b)) on the bearing of trend of anti-bakie 6.
Consequently, on face sheet 2, formed " face sheet 2 must cave in, and simultaneously absorbent sheet 4 does not cave in fact or the anti-bakie 6 of absorbent sheet 4 discontinuous depression on the bearing of trend of anti-bakie 6 ".From another angle, formed " high compression portion 62 and low compression portion 61 are alternately arranged and the 62 anti-bakies 6 that formed the density gradient from low compression portion 61 towards high compression portion ".
According to the sanitary napkin 1 of the present embodiment of structure as mentioned above, on face sheet 2, high compression portion 62 and low compression portion 61 are alternately arranged on the bearing of trend of anti-bakie 6, and 62 have formed the density gradient from low compression portion 61 towards high compression portion.Therefore, flow into the capillary force that the liquid utilization in the anti-bakie 6 produces because of the density gradient between low compression portion 61 and the high compression portion 62,62 move from low compression portion 61 towards high compression portion, thereby are directed into expeditiously in the absorbent sheet 4.
Therefore, can reduce the damp that the skin to wearer brings, keep comfortable usability for a long time.So even absorbing liquid repeatedly and absorbing in the short time under the situation of a large amount of liquid, the liquid that absorbs in the absorbed layer also has good diffusibility.
In addition, owing to making flowing of liquid show directivity, so liquid is not easy to escape to the outside of cyclic anti-bakie 6 along the bearing of trend of anti-bakie 6.
As face sheet 2, when using the concavo-convex sheet material shown in Fig. 3 (a) and Fig. 3 (b), with the contact layer of absorbent sheet 4 be that second fibrous layer 22 of lower floor is not easy with absorbent sheet 4 melt bonded.Therefore, in lower floor's (second fibrous layer 22) of face sheet 2, there is the diffusion path, so the diffusibility height of liquid on face direction (with the orthogonal direction of thickness direction).
Absorbent commodity of the present utility model is not limited to above-mentioned embodiment, and only otherwise break away from aim of the present utility model, change then can suit.
For example, as shown in Figure 4, can also be in the inboard of cyclic anti-bakie 6, along the width of absorbent commodity 1 many other anti-bakies 6 ' that extend are set with being spaced from each other distance on the length direction of absorbent commodity (sanitary napkin) 1.In the embodiment depicted in fig. 4, be provided with the anti-bakie 6 ' of 2 linearly extensions on the length direction of sanitary napkin 1.Be provided with in the longitudinal direction 6 ' form of the anti-bakie that extends according to aforesaid inboard at cyclic anti-bakie 6, inboard at cyclic anti-bakie 6, liquid diffusibility alongst is further enhanced, and is preferred from this viewpoint.
The plan view shape of anti-bakie is not limited to ring-type, also can be linearity or the curve-like that extends on the linearity that extends on the length direction of absorbent commodity or curve-like and the width at absorbent commodity.
Absorbent commodity of the present utility model can also be applicable to underwear back boxing, sanitary pad, incontinence pad etc. except being applicable to sanitary napkin.
According to absorbent commodity of the present utility model, on absorbed layer, be provided with anti-bakie by compression process, even therefore absorbing liquid repeatedly and absorbing in the short time under the situation of a large amount of liquid, the liquid that absorbs in the absorbed layer also has good diffusibility.
Claims (5)
1. absorbent commodity, it has the stacked and absorbed layer that forms of the low absorbent sheet of the face sheet that will be made of bulk non-woven fabrics and compression, it is characterized in that, be provided with in skin contact surface one side of described absorbed layer and be the anti-bakie that continuous wire is extended when overlooking; Described anti-bakie is that described absorbed layer is being carried out compression process and when described face sheet and described absorbent sheet are become one along thickness direction, forms by making described face sheet depression at least; On described face sheet, high compression portion and low compression portion are alternately arranged on the bearing of trend of described anti-bakie, have formed the density gradient from described low compression portion towards described high compression portion.
2. absorbent commodity as claimed in claim 1 is characterized in that, the content of the water absorbent polymer in the described absorbent sheet of the downside of described anti-bakie is more than 25%.
3. absorbent commodity as claimed in claim 1 or 2 is characterized in that, the thickness of described face sheet is more than the 0.5mm.
4. absorbent commodity as claimed in claim 1 or 2 is characterized in that, described anti-bakie has cyclic plan view shape.
5. absorbent commodity as claimed in claim 4, it is characterized in that, in the inboard of cyclic described anti-bakie, be provided with many other described anti-bakies along the width of absorbent commodity with being spaced from each other distance, this other described anti-bakie extends on the length direction of absorbent commodity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP375180/2005 | 2005-12-27 | ||
| JP2005375180A JP4974524B2 (en) | 2005-12-27 | 2005-12-27 | Absorbent articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201029993Y true CN201029993Y (en) | 2008-03-05 |
Family
ID=38300952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201734130U Expired - Fee Related CN201029993Y (en) | 2005-12-27 | 2006-12-19 | Absorbability article |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4974524B2 (en) |
| CN (1) | CN201029993Y (en) |
| TW (1) | TWM316715U (en) |
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2005
- 2005-12-27 JP JP2005375180A patent/JP4974524B2/en active Active
-
2006
- 2006-12-08 TW TW95221771U patent/TWM316715U/en not_active IP Right Cessation
- 2006-12-19 CN CNU2006201734130U patent/CN201029993Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561702A (en) * | 2011-05-20 | 2014-02-05 | 尤妮佳股份有限公司 | Absorbent article |
| CN103561702B (en) * | 2011-05-20 | 2015-06-24 | 尤妮佳股份有限公司 | Absorbent article |
| CN108348376A (en) * | 2015-11-20 | 2018-07-31 | 花王株式会社 | Absorbent commodity |
| CN107997878A (en) * | 2017-12-18 | 2018-05-08 | 厦门延江新材料股份有限公司 | A kind of application of porous membrane and its molding machine and the porous membrane |
| CN112135594A (en) * | 2018-09-04 | 2020-12-25 | 花王株式会社 | Absorbent article |
| CN111150558A (en) * | 2018-11-08 | 2020-05-15 | 尤妮佳股份有限公司 | Absorbent article |
| CN111150558B (en) * | 2018-11-08 | 2022-11-29 | 尤妮佳股份有限公司 | Absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007175167A (en) | 2007-07-12 |
| JP4974524B2 (en) | 2012-07-11 |
| TWM316715U (en) | 2007-08-11 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20131219 |