CN103565588A - Absorption article - Google Patents
Absorption article Download PDFInfo
- Publication number
- CN103565588A CN103565588A CN201210257260.8A CN201210257260A CN103565588A CN 103565588 A CN103565588 A CN 103565588A CN 201210257260 A CN201210257260 A CN 201210257260A CN 103565588 A CN103565588 A CN 103565588A
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- CN
- China
- Prior art keywords
- guiding
- region
- absorbent item
- main part
- depth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
- A61F13/51108—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections the top sheet having corrugations or embossments having one axis relatively longer than the other axis, e.g. forming channels or grooves in a longitudinal direction
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
- A61F2013/51338—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having improved touch or feeling, e.g. smooth film
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
- A61F2013/51355—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability for improving fluid flow
Abstract
The invention relates to an absorption article which is provided with a body portion. The body portion is provided with a middle region, the outer surface of the body portion is concaved towards the inside of the body portion to form a flow guiding groove, and the flow guiding groove comprises a first flow guiding region located in the middle region of the body portion and two second flow guiding regions, wherein two ends of the first flow guiding region respectively extend in the extending direction of the first flow guiding region to form the second flow guiding regions. The depth of at least one of the second flow guiding regions concaved towards the inside of the body portion along the surface of the body portion is larger than that of the first flow guiding region concaved towards the inside of the body portion along the surface of the body portion. Compared with the prior art, the absorption article can enable liquid to quickly diffuse towards two ends of the absorption article, and accordingly the middle region of the absorption article is in a dry state for a long period of time.
Description
Technical field
The present invention relates to a kind of absorbent item.
Background technology
For disposable absorbent articles such as the paper napkin, need the liquid can very fast being absorbed, to prevent skin and liquid Long contact time, cause the dermatosis such as dermatitis.
The general paper napkin are conventionally by permeable top layer, absorbed layer and non-liquid permeability bottom stratification, and liquid is attracted deposits in absorbed layer after permeable top layer infiltration, the liquid further seepage of described non-liquid permeability bottom for preventing from attracting deposits at absorbed layer.In order to improve the liquid absorption of disposable absorbent article, common way comprises: the material that differential permeability is strong is made permeable top layer, to shorten as much as possible liquid in the time of staying of permeable top layer; The Time of Fluff Slurry that the super absorbent polymer (Super Absorbent Polymer, SAP) that employing has a high-efficiency water-absorbing performance and fibre length are longer is prepared absorbed layer, enters the time of described absorbed layer to shorten liquid.
The above-mentioned mode that is usually used in accelerating absorbent item all has following defect: on the one hand, adopt the good material of absorbent properties, can cause the cost of absorbent item significantly to rise, be unfavorable for the market competition of product, on the other hand, no matter adopt which kind of material, under usual condition, the disposable absorbent articles such as the paper napkin in use, due to the intrinsic wearing mode of absorbent item, two ends with respect to absorbent item, the middle part of absorbent item is usually located at lower position, therefore under the effect of gravity, liquid all can concentrate on the middle part of absorbent item after penetrating into absorbent item, and lessly to absorbent item two ends, spread, like this, will cause the absorbability at absorbent item two ends not make full use of, form waste, simultaneously, liquid cannot effectively spread in the central region of absorbent item, also can make the central region of absorbent item remain moister state, so not only can make wearer produce uncomfortable, but also likely cause wearer to occur the dermatosis such as dermatitis.
Summary of the invention
In view of this, provide a kind of absorbent item that can overcome the problems referred to above in fact for necessary.
A kind of absorbent item, it has a main part, described main part has central region, outer surface at described main part is arranged with and is formed with guiding gutter to main part inside, described guiding gutter comprises and is positioned at central region first guiding region of described main part and along the bearing of trend of described the first guiding region, two the second guiding regions that extended to form respectively by the two ends of described the first guiding region, wherein in described the second guiding region, have that the degree of depth being arranged with to main part inside along described main part surface of second guiding region is greater than that described the first guiding region is arranged with to main part inside along described main part surface at least the degree of depth.
Compared with prior art, described absorbent item provided by the present invention, it defines a central region on described absorbent item.The first guiding region is set in described central region, while is along the bearing of trend of described the first guiding region, by the two ends of described the first guiding region, extend respectively to form two the second guiding regions, thereby on described absorbent item, form a guiding gutter being connected to form successively to second the second guiding region again by described first second guiding region, the first guiding region, then setting makes the degree of depth of at least one guiding region in described the second guiding region be greater than the degree of depth of described the first guiding region.By said structure, design, make liquid after falling the surface of described absorbent item, liquid can be under the guiding of described guiding gutter fast to two ends or two sides diffusions of described absorbent item, on the one hand, can make as much as possible the regional in the absorbed layer of described absorbent item be applied fully, on the other hand, can also avoid liquid to concentrate on the central region of absorbent item and cause the central region of absorbent item to remain compared with moist state causing wearer to produce uncomfortable defect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the absorbent item that provides of embodiment of the present invention.
Fig. 2 is the profile along the II-II line shown in Fig. 1.
Main element symbol description
| |
100 |
| |
10 |
| |
101 |
| |
11 |
| The first guiding |
111 |
| The second guiding |
112 |
| Permeable |
20 |
| |
21 |
| |
30 |
| Opaque liquid bottom | 40 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Refer to shown in Fig. 1 and Fig. 2, the absorbent item 100 that embodiment of the present invention provides, it comprises main part 10, the outer surface of described main part 10 is concaved with guiding gutter 11 to described main part inside.
In the present embodiment, described main part 10 comprises permeable top layer 20, absorbed layer 30 and opaque liquid bottom 40, and described permeable top layer 20, absorbed layer 30 and opaque liquid bottom 40 stack gradually and form described main part 10.
Described permeable top layer 20 has and is exposed to outside outer surface 21, and described outer surface 21 forms an outer surface of described main part 10, and described guiding gutter 11 is formed on described outer surface 21.
Understandable, due to when described absorbent item 100 is used, described permeable top layer 20 need to directly contact with user skin, therefore the material of described permeable top layer 20 is preferably used the liquid permeability can be good and have the material of soft smooth sense of touch, such as natural flexible fibers such as cotton fibers.
Described guiding gutter 11 is formed on the outer surface 21 of described permeable top layer 20, and it is for guiding dropping on the liquid of described permeable top layer 20, to help liquid to the periphery diffusion of described absorbent item 100.Described absorbent item 100 has a central region 101 and along two opposed ends of the length direction of described absorbent item 100 with along two relative sides of the width of described absorbent item 100.
In the present embodiment, described guiding gutter 11 comprises the first guiding region 111, and described the first guiding region 111 is roughly positioned at the central region 101 of described absorbent item 100 and its bearing of trend with the length direction of this absorbent item 100.
Bearing of trend along described the first guiding region 111, extend to two opposed ends of described absorbent item 100 respectively at the two ends of described the first guiding region 111, thereby on described outer surface 21, form two the second guiding regions 112, that is to say, described the first guiding region 111 is roughly positioned at the middle part of described absorbent item 100, and described the second guiding region 112 is extended to form towards the opposite end portion of described absorbent item 100 by the two ends of the first guiding region 111.Described the first guiding region 111 and two the second guiding regions 112 form described guiding gutter 11 jointly on described outer surface 21, in described two the second guiding regions 112, have at least the degree of depth of 112 guiding regions, second guiding region to be greater than the degree of depth of described the first guiding region 111.Be that in described two the second guiding regions 112, at least one second guiding region 112 is greater than the degree of depth of described the first guiding region 111 from the outer surface 21 of described main part 10 to main part 10 inner recess at the outer surface 21 from described main part 10 to the degree of depth of main part 10 inner recess.Preferably, in the present embodiment, the degree of depth of described two the second guiding regions 112 is all greater than the degree of depth of described the first guiding region 111.
Also can extend along the width of described absorbent item 100 the first guiding region 111 that is appreciated that the central region that is positioned at described absorbent item 100.When extend along the width of described absorbent item 100 described the first guiding region 111, the two ends of described the first guiding region 111 are the two ends along absorbent item 100 widths below.By the two ends of the first guiding region 111, towards described absorbent item 100, two relative sides on width extend in described the second guiding region 112, thereby on the outer surface 21 of described absorbent item 100, form the guiding gutter 11 extending along the width of described absorbent item 100.
In the present invention, because described guiding gutter 11 inwardly compresses recessed formation by fiber, therefore,, in described main part 10, the fiber layer thickness in the region at described guiding gutter 11 places is less than the fiber layer thickness in other region of described main part 10, that is to say, the fibre density of described guiding gutter 11 regions is greater than the fibre density in other region of described main part 10, meanwhile, and in described guiding gutter 11, the region that the guiding gutter degree of depth is larger, its fibre density is just larger.In the present embodiment, because the degree of depth of described two the second guiding regions 112 is all greater than the degree of depth of described the first guiding region 111, therefore in the region at described guiding gutter 11 places, the fibre density in 112 corresponding regions, described the second guiding region is greater than the fibre density in 111 corresponding regions, described the first guiding region.
As everyone knows, the main cause that the porous object such as paper, textile can absorb water is capillarity.So-called capillarity refers to that liquid is in thin tube-like object, because the surface tension of liquid and the difference of adhesive force overcome the phenomenon that centrifugal force rises along tubule.Capillarity is followed formula below:
In above formula, the height that h express liquid rises, γ presentation surface tension force, θ represents contact angle, ρ express liquid density, g represents acceleration of gravity, r represents tubule radius, in same environment, surface tension γ in above formula, contact angle θ, fluid density ρ and gravity acceleration g all can be regarded constant as, that is to say, the height that liquid rises depends on the radius of tubule, tubule radius is less, and it is higher that liquid rises.
When by the application of principle of above-mentioned capillarity in absorbent item time, tubule radius r is the pore size of described absorbent item, the region that fibre density is larger, its hole will be less, also just more easily there is capillarity, that is to say the region that fibre density is larger, the speed of liquid diffusion is just faster, and then its water absorbing properties is just stronger.
In the main part 10 of the absorbent item 100 providing in present embodiment, because the fibre density in described guiding gutter 11 corresponding regions is greater than the fibre density in other region of described main part 10, simultaneously, in the corresponding region of described guiding gutter 11, the density in 112 corresponding regions, described the second guiding region is greater than the fibre density in 111 corresponding regions, described the first guiding region, therefore, in described absorbent item 100, the liquid diffusion velocity in the region corresponding with described guiding gutter 11 is very fast, water absorbing properties is stronger, simultaneously, in the region corresponding with described guiding gutter 11, the liquid diffusion velocity in the region corresponding with described the second guiding region 112 is very fast, water absorbing capacity is stronger.When liquid drops on behind the middle part of described absorbent item 100, the liquid diffusion of the residing region of described guiding gutter 11 is very fast, therefore a large amount of liquid can flow to the residing region of described guiding gutter 11, simultaneously, due in the residing region of described guiding gutter 11, the fibre density in the region corresponding with described the second guiding region 112 is greater than the fibre density in the region corresponding with described the first guiding region 111, the principle of following according to capillarity, the liquid in described the first guiding region 111 just can be easy to the regional diffusion corresponding with described the second guiding region 112.Like this, in the use procedure of described absorbent item 100, drop on most of liquid at described absorbent item 100 middle parts under the guiding of described guiding gutter 11, extend the both ends or the dual-side that are diffused into described absorbent item 100, thereby not only make the absorbed layer of described absorbent item 100 both ends or dual-side be fully utilized, but also time that the central region that can extend described absorbent item 100 keeps dry, the middle part that has overcome absorbent item in prior art is moist and sense of discomfort that user is caused easily.
Understandable, in described guiding gutter 11, the change in depth of described guiding gutter 11 can be that continuous variation also can steppedly change,, along described the first guiding region 111 bearing of trend, the two ends of described the first guiding region 111 extend to form respectively in the process of described the second guiding region 112, by the change in depth of 111 to second guiding regions 112, described the first guiding region, can be continuous variations, also can steppedly change.
Preferably, along the bearing of trend of described guiding gutter 11, from 112 to first guiding regions 111, second guiding region again to second the second guiding region 112, the change in depth of described guiding gutter 11 is to arrive from deep to shallow dark continuous variation again.
Understandable, be formed on the described guiding gutter 11 on described main part 10 surfaces, according to different design requirements, its surperficial distributed quantity at described main part 10 can be one, two or many, simultaneously, described guiding gutter 11 can extend along the length direction of described absorbent item 100, also can extend along the width of described absorbent item 100, certainly, when being formed with many described guiding gutters 11, at length direction and the width of described absorbent item 100, all can form described guiding gutter 11.
Preferably, in the present embodiment, the surface of described main part 10 is formed with two guiding gutters that are oppositely arranged 11, and described two guiding gutters 11 all extend along the length direction of described absorbent item 100.
Understandable, described guiding gutter 11 can be linear type guiding gutter, can be also shaped form guiding gutter.
Described absorbed layer 30 is for absorbing the liquid permeating from described permeable top layer 20.Described absorbed layer 30 is preferably mainly and is formed by Time of Fluff Slurry.
In the present invention, the material that forms described absorbed layer 30 does not have special restriction, as long as the material or the composite material that can be used in absorbent item and can form the material layer with absorption function all may be used in the present invention, such as having the macromolecular material of moisture pick-up properties and macromolecular material and Plant fiber's composite material etc.
Described opaque liquid bottom 40 continues downward seepage for stopping the liquid in described absorbed layer 30.The material that forms described opaque liquid bottom 40 can be to have the macromolecular material of hydrophobic performance or have impermeable material layer of compact structure etc.
Understandable, in described absorbent item 100 provided by the present invention, thickness direction along described absorbent item 100, the recessed degree of depth of described guiding gutter 11 can design according to different product demands, that is to say, thickness direction at described main part 10, the inside recessed degree of depth of described guiding gutter 11 can be less than or equal to the thickness of described permeable top layer 20, or the thickness that the inside recessed degree of depth of described guiding gutter 11 also can be greater than described permeable top layer 20 is less than or equal to the gross thickness of described permeable top layer 20 and absorbed layer 30, certainly, the inside recessed degree of depth of described guiding gutter 11 can also be greater than the gross thickness that described permeable top layer 20 and the gross thickness of absorbed layer 30 are less than or equal to described main part 10.
Compared with prior art, described absorbent item 100 provided by the present invention, it defines a central region 101 on described absorbent item 100.The first guiding region 111 is set in described central region 101, while is along the bearing of trend of described the first guiding region 111, by the two ends of described the first guiding region 111, extend respectively to form two the second guiding regions 112, thereby on described absorbent item 100, form a guiding gutter 11 being connected to form successively to second the second guiding region 112 again by described first second guiding region 112, the first guiding region 111, then setting makes the degree of depth of at least one guiding region in described the second guiding region 112 be greater than the degree of depth of described the first guiding region 111.By said structure, design, make liquid after falling the surface of described absorbent item 100, liquid can be under the guiding of described guiding gutter 11 fast to two ends or two sides diffusions of described absorbent item 100, on the one hand, can make as much as possible the regional in the absorbed layer of described absorbent item 100 be applied fully, on the other hand, can also avoid liquid to concentrate on the central region of absorbent item 100 and cause the central region of absorbent item 100 to remain compared with moist state causing wearer to produce uncomfortable defect.
In addition, those skilled in the art also can do other variation in spirit of the present invention.Therefore the variation that these are done according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (10)
1. an absorbent item, it has a main part, described main part has central region, it is characterized in that: the outer surface at described main part is arranged with and is formed with guiding gutter to main part inside, described guiding gutter comprises and is positioned at central region first guiding region of described main part and along the bearing of trend of described the first guiding region, two the second guiding regions that extended to form respectively by the two ends of described the first guiding region, wherein in described the second guiding region, have that the degree of depth being arranged with to main part inside along described main part surface of second guiding region is greater than that described the first guiding region is arranged with to main part inside along described main part surface at least the degree of depth.
2. absorbent item as claimed in claim 1, is characterized in that: extend along the length direction of described absorbent item described the first guiding region.
3. absorbent item as claimed in claim 1, is characterized in that: extend along the width of described absorbent item described the first guiding region.
4. the absorbent item as described in claims 1 to 3 any one, is characterized in that: described main part comprises folded permeable top layer, absorbed layer and the opaque liquid bottom of establishing successively, and described guiding gutter forms the outer surface in described permeable top layer.
5. absorbent item as claimed in claim 4, is characterized in that: at the thickness direction of described main part, the degree of depth of described guiding gutter is less than or equal to the thickness of described permeable top layer.
6. absorbent item as claimed in claim 4, is characterized in that: at the thickness direction of described main part, the thickness that the degree of depth of described guiding gutter is greater than described permeable top layer is less than or equal to the gross thickness of described permeable top layer and absorbed layer.
7. absorbent item as claimed in claim 4, is characterized in that: at the thickness direction of described main part, the gross thickness that the degree of depth of described guiding gutter is greater than described permeable top layer and absorbed layer is less than or equal to the gross thickness of described main part.
8. absorbent item as claimed in claim 1, is characterized in that: the degree of depth of described two the second guiding regions is all greater than the degree of depth of described the first guiding region.
9. absorbent item as claimed in claim 1, is characterized in that: along the bearing of trend of described guiding gutter, the degree of depth of described guiding gutter is seriality and changes.
10. absorbent item as claimed in claim 1, is characterized in that: along the bearing of trend of described guiding gutter, the degree of depth of described guiding gutter is ladder and changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257260.8A CN103565588B (en) | 2012-07-24 | 2012-07-24 | Absorbent item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257260.8A CN103565588B (en) | 2012-07-24 | 2012-07-24 | Absorbent item |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103565588A true CN103565588A (en) | 2014-02-12 |
| CN103565588B CN103565588B (en) | 2019-04-16 |
Family
ID=50038885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210257260.8A Active CN103565588B (en) | 2012-07-24 | 2012-07-24 | Absorbent item |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103565588B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204591Y (en) * | 1994-11-16 | 1995-08-09 | 朱国铭 | Sanitary towel with extending grooves |
| CN1296806A (en) * | 1999-11-17 | 2001-05-30 | 尤妮佳股份有限公司 | Body fluid absorption articles for wearing |
| CN1449729A (en) * | 2002-04-11 | 2003-10-22 | 康那香企业股份有限公司 | Fully stopping absorbent pad |
| CN1480114A (en) * | 1996-11-29 | 2004-03-10 | 花王株式会社 | Absorptive article |
| CN101234057A (en) * | 2007-01-29 | 2008-08-06 | 简元正 | Sanitary napkin with excellent drainage effect |
| CN203263622U (en) * | 2013-05-20 | 2013-11-06 | 陈孟春 | Far infrared intelligent foot warmer |
-
2012
- 2012-07-24 CN CN201210257260.8A patent/CN103565588B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204591Y (en) * | 1994-11-16 | 1995-08-09 | 朱国铭 | Sanitary towel with extending grooves |
| CN1480114A (en) * | 1996-11-29 | 2004-03-10 | 花王株式会社 | Absorptive article |
| CN1296806A (en) * | 1999-11-17 | 2001-05-30 | 尤妮佳股份有限公司 | Body fluid absorption articles for wearing |
| CN1449729A (en) * | 2002-04-11 | 2003-10-22 | 康那香企业股份有限公司 | Fully stopping absorbent pad |
| CN101234057A (en) * | 2007-01-29 | 2008-08-06 | 简元正 | Sanitary napkin with excellent drainage effect |
| CN203263622U (en) * | 2013-05-20 | 2013-11-06 | 陈孟春 | Far infrared intelligent foot warmer |
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| Publication number | Publication date |
|---|---|
| CN103565588B (en) | 2019-04-16 |
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