CN101822592A - The absorbent article of Briefs type - Google Patents
The absorbent article of Briefs type Download PDFInfo
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- CN101822592A CN101822592A CN201010155618A CN201010155618A CN101822592A CN 101822592 A CN101822592 A CN 101822592A CN 201010155618 A CN201010155618 A CN 201010155618A CN 201010155618 A CN201010155618 A CN 201010155618A CN 101822592 A CN101822592 A CN 101822592A
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Abstract
A kind of absorbent article of Briefs type (1) has framework (4) and comprises the absorbability assembly (3) of absorbent cores (2).Framework (4) comprises front portion (5) and rear portion (6), and wherein front and rear (5; 6) be engaged with each other along two opposed vertical sides, determine a waist opening and a pair of leg opening thus.Front and rear (5; 6) at least one in comprises elastic web material (10).Described goods also comprise along its longitudinal direction and are in crotch portion (7) between front portion (5) and rear portion (6), described front portion (5) possesses length (b1) in a longitudinal direction, described rear portion (6) possesses length (b3) in a longitudinal direction, and described crotch portion (7) possesses length (b2) in a longitudinal direction.Absorbability assembly (3) be positioned at least that described crotch portion (7) goes up and with front and rear (5; 6) all overlapping certain distance.According to an embodiment, when the goods when to extended state are measured, absorbability assembly (3) to described front and rear separately the overlapping of surf zone be no more than 20%, preferably be no more than 10%.
Description
The application is the Chinese patent application No.200580048185.2 (applying date: on March 2nd, 2005; Denomination of invention: the dividing an application absorbent article of Briefs type).
Technical field
The present invention relates to the Briefs type absorbent article such as diaper, sweat pants or incontinence garment, these goods comprise elastic web material (web material).
Background technology
Absorbent article with definite core region and frame area is considered to cosily be applicable to wearer.For the underwear article as diaper, sweat pants and incontinence pant, expect that also these goods can put on the buttocks of wearer and take off from it, allow wearer or care-giver to be easy to put on goods thus and when goods are made dirty, be easy to take off.Known this class absorbent pants that makes has the stretched sidepiece and the waist of elastification, and it generally includes such as the flexible member of lastex also is fixed between backing layer and the top layer collapsiblely.
Be well known that in addition, make the part of the framework of absorbent article by elastomeric material (bonded laminated product for example stretches).This class laminated product can comprise that one deck blows the molten elastic fiber that forms, and this elastic fiber has been stretched and has been sandwiched between the skin of spunbond fibre web.
US6,552,245 disclose a kind of extensible outer housing that is used for absorbent article, and it can provide certain permanent deformation when bearing pulling force.This extensible outer housing comprises and presents the shrinkage layer stampings that one deck shrinks nonelastic film and one deck elastica form.Described film is a breathable.
WO03/047488 discloses a kind of elastic laminate that comprises elastica, and described elastica engages with the first and second inelastic fiber layers in relative both sides.This laminated product is by being connected to layers of elastomeric film with the inelastic fiber layer, extend then composite so that inelastic materials fracture takes place and form.The elastica material can be the breathable material.Above-mentioned laminated product can be incorporated in the absorbent article.
US2004/0243086 discloses a kind of disposable underpants type underwear, and it has the extensible front and rear of for example being made by elastic laminate.Absorbability assembly and described front and rear fix.
Other examples that absorbent article part is made by elastic laminate can be at US6,476,289 and JP10043235 in find.
A kind of absorbent article that comprises the outer cup layer of having touched upon among International Application PCT/SE2004/001004, PCT/SE2004/001005 and the PCT/SE2004/001415, described outer cup layer presents the form of elastic laminate, and possesses the performance of improving of feel and outward appearance as the cloth for example.
For comfort level and the leakproof safety that obtains good coupling, improvement, importantly absorbent article possesses the size that the relative size with wearer is complementary.The relative size no less important of goods, the assembly of goods or position can not be excessive relative to each other or too small like this.The overall dimensions of goods and the relative size of assembly thereof can also be regulated, so that make goods obtain the outward appearance of more similar underwear.Can use elastomeric material to improve matching, but this is normally expensive, therefore has needs, and can comprise (cheap) inelastic materials for the more unessential position of those elasticity to elastic article for the position of elasticity outbalance.Must select elasticity and inelastic materials rightly to the different assemblies or the position of goods, thus the relation between balance goods cost and the matched well.In addition, in any case in the article construction elasticity of used elastic web material must be kept.
Therefore, still there be necessity, especially their matching and the outward appearance that the performance of the absorbent article that comprises elastic web material (such as elastic laminate) is improved.The comfort of the above-mentioned type absorbent article and soft feeling equally also are important.In addition, the improvement of manufacture method allows manufacturing cost to keep minimizing, and this is significant for disposable product, because they just are dropped after once using.
Summary of the invention
The object of the present invention is to provide a kind of absorbent article of Briefs type, it can avoid the related problem of known articles of the type.This can obtain by following Briefs type absorbent article (such as diaper, sweat pants or incontinence pant): these goods have framework and comprise the absorbability assembly of absorbent core layer.Described framework comprises front and rear, and this front and rear is engaged with each other along two opposed vertical sides, determines a waist opening and a pair of leg opening thus.In the described front and rear at least one comprises elastic web material.Described goods also comprise along its longitudinal direction and are in crotch portion between described front portion and the described rear portion.Described front portion possesses length (b1) in a longitudinal direction, and described rear portion possesses length (b3) in a longitudinal direction, and described crotch portion possesses length (b2) in a longitudinal direction.Described absorbability assembly be positioned at least in the described crotch portion and with all overlapping certain distance of described front and rear, and said products has longitudinal direction (y) and horizontal direction (x).
According to one embodiment of the present of invention, when the goods when to extended state are measured, described absorbability assembly to described front and rear separately the overlapping of surf zone be no more than 20%, preferably be no more than 10%.Term " extended state " will be illustrated below more fully.
In this way, the absorbent article of this Briefs type can provide good coupling, higher comfortableness and leakproof safety, because it is easier to mate the bodily form of wearer.By utilizing the especially combination between the goods part of part, can allow more easily to determine component specification, and specified portions is made optimum selection.
According to another embodiment of the present invention, said products have the first half that limited by product edges and goods cross central line and by product edges and goods cross central line limited latter half of.According to the present invention, when the goods when to extended state were measured, the surface area of described first half was 80%～90% of a described latter half of surface area.
According to another embodiment of the present invention, said products possesses Breadth Maximum (c) in a lateral direction and possesses greatest length (b) in a longitudinal direction.According to the present invention, when the goods when to extended state were measured, the described Breadth Maximum (c) of goods was 80%～120% with the ratio of described greatest length (b), preferred 90%～110%.In addition, when the goods when to extended state were measured, described forward length (b1) was 25%～35% with the ratio of the described width (c) of goods, preferred 28%～32%.When the goods when to extended state were measured, the length at described rear portion (b3) was 38%～52% with the ratio of the described width (c) of goods.
When the goods when to extended state were measured, the length (b2) of described crotch portion was 10%～40% of goods entire length (b), and is preferred 20%～40%, most preferably 25%～35%.
In one embodiment, described front portion and described rear portion all comprise described elastic web material.
According to one aspect of the present invention, described crotch portion does not possess described elastic web material substantially, and the length of described crotch portion equals the distance between the surface layer of elastic web material in the described front and rear substantially.
Preferably, described absorbability assembly comprises the top layer of the impermeable backing layer of liquid, fluid permeable, and is enclosed in absorbent cores between the two.
According to one embodiment of the present of invention, described crotch portion comprises crotch portion surface material, the preferably nonelastic substantially Web materials of this surface material, and be positioned under the absorbability assembly that pastes the clothing side.Preferably, described nonelastic Web materials is a nonwoven cloth material.
According to an embodiment, described elastic web material is a laminated product, and it is made of first and second layers of fibrous material and the layers of elastomeric film that is between described first and second fibrous layers.In another embodiment, described layers of elastomeric film is a breathable.
According to one aspect of the present invention, described elastic laminate possesses according to ASTME96-00 Procedure D and is at least 1500g/m
224h, preferably be at least 3000g/m
2The water vapor transmission rate of 24h.
According to an embodiment, described elastic laminate comprises first and second fibrous layers and the breathable layers of elastomeric film of spunbonded materials, and described first and second fibrous layers possess 10g/m separately
2～35g/m
2, preferred 12g/m
2～30g/m
2, more preferably 10g/m
2～25g/m
2Basic weight, described layers of elastomeric film possesses 20g/m
2～80g/m
2, preferred 20g/m
2～60g/m
2Basic weight, described elastic laminate possesses according to ASTM E96-00 Procedure D and is at least 1500g/m
224h, preferably be at least 3000g/m
2The water vapor transmission rate of 24h.
According to another one embodiment, when measuring according to the flexibility test method of this description regulation, described elastic web material possesses at least 30%, preferably at least 50% in a lateral direction at goods, more preferably at least 70% elasticity.
According to one aspect of the present invention, described elastic web material possesses the 100g/m of being no more than
2, preferably be no more than 90g/m
2Basic weight.
Description of drawings
To the present invention more specifically be described by example and with reference to accompanying drawing below, in the accompanying drawings:
Fig. 1 has shown the perspective view of diaper.
Fig. 2 shown diaper before the molding from being in that it is flat, be fully extended the plane graph under the state shown in the side next to the shin (body-facing).
Fig. 3 is the respective planes figure from opposite subsides clothing side (garment-facing) gained of diaper.
Fig. 4 is the section according to VI-VI line gained among Fig. 3.
Fig. 5 according to VII-VII line gained among Fig. 3, run through the section of elastic laminate.
The specific embodiment
Some embodiment below with reference to accompanying drawings more specifically describe the present invention.
(absorbent article)
Term " absorbent article " is represented that those are arranged to and is contacted with the skin of wearer so that absorb and comprise the goods of picture urine, feces and this class body exudates of menstrual fluid.The present invention relates generally to disposable absorbent article, this means not expect goods are washed or restore or utilization once more after using.The present invention relates to " absorbent article of Briefs type ", it has core region and surrounds the frame area of core region.The example of this class Briefs type absorbent article has diaper, sweat pants and incontinence pant.
Accompanying drawing has shown the embodiment of the diaper 1 that is used for baby or incontinence adult.This diaper generally includes the absorbent cores 2 that is arranged in goods absorbability assembly 3.This diaper also comprises framework 4.Described framework comprises front portion 5 and rear portion 6.Said products can also comprise elastic belt 17.
Said products possesses longitudinal direction y and transverse direction, x.
(top layer)
The top layer 20 of fluid permeable can be made of nonwoven cloth material, for example spunbond, blow that molten, carding, water twine, material that wet-laying etc. forms.Suitable nonwoven cloth material can comprise the natural fiber of wood pulp cellulose for example or cotton fiber, such as the staple fibre of polyester, polyethylene, polypropylene, viscose rayon, or the mixture of natural fiber and staple fibre.Described quilting material can also comprise two kinds of fibers, and they can for example engage with the disclosed juncture of EP1035818A1 each other.Other examples of quilting material have porous foam, plastic foil with holes etc.These are applicable to that the material of quilting material should be softish and Diazolidinyl Urea not, and expectation is easy to be permeated by the body fluid of urine or menstrual fluid for example.Above-mentioned top layer can be different for the different parts of absorbent article.
(backing layer)
The impermeable backing layer 19 of liquid is included in absorbent cores 2 and pastes in the absorbability assembly 3 on the clothing sides, it is a kind of liquid-impermeable material, be the such thin plastic of polyethylene film or polypropylene screen for example, be coated with liquid-impermeable material nonwoven cloth material, prevent the hydrophobicity nonwoven cloth material of liquid infiltration, perhaps comprise the laminated product of plastic foil and nonwoven cloth material.Backing layer 19 can be a breathability, so that allow steam to overflow from absorbent cores, prevents that simultaneously liquid from passing through from it.The example of breathable backsheet materials has porous polymeric membrane, by laminated product spunbond and that blow nonwoven layer stampings that crucible zone makes, make by porous polymer and non-woven fabrics.Backing layer 9 is preferably inelastic.
(elastic web material)
The front portion 5 of framework 4 and at least one in the rear portion 6 comprise elastic web material 10.Preferably, front portion 5 and rear portion 6 all comprise elastic web material 10.When according to when the flexibility test method of this regulation is measured, the elasticity of elastic web material 10 on the x direction should be 30% at least, preferably at least 50%, more preferably at least 70%.
Preferably, elastic web material 10 also has elasticity on the y of goods direction.But the elasticity on the y direction preferably will be lower than the elasticity of x direction.Elasticity on the y direction should be 20% at least.
For the embodiment in this demonstration and description, described elastic web material is elastic laminated product 10, and it is constituted (referring to Fig. 5) by the ground floor 11 and the second layer 12 of fibrous material and the middle layers of elastomeric film 13 that is between the described fibrous layer.Yet should be understood that, also can use the elastic web material of other types, for example elastic nonwoven cloth material, self is nonelastic but form elastic nonwoven cloth material by lastex etc.Elastic web material can comprise one deck or carry out laminated two-layer and more multi-layered.
For the elastic laminate in this demonstration and description, preferably the fibrous layer 11 and 12 with the outside is chosen as: they combine so that give the puncture resistance of material height with inner elastomeric rete 13.They are returned laminated product feel as soft and the cloth are provided.The example of appropriate materials has the fibre web of combing formation and the material of spunbond formation.The basic weight of above-mentioned fibrous material layer should be 10g/m
2～35g/m
2, preferred 12g/m
2～30g/m
2, more preferably 15g/m
2～25g/m
2The example of used suitable polymer has polyethylene, polyester, polypropylene and other polyolefin homopolymer and copolymer in the fibrous material.Also can use for example natural fiber of cotton yarn, as long as they provide required performance.The mixture of polymer helps to form more elastomeric nonwoven layer, and higher draftability when giving the nonwoven cloth material peak load thus.Polyethylene and polyacrylic mixture are verified can to provide good effect in this regard.The fiber mixing body of different polymer also is feasible.
The whole basic weight of described laminated product is 100g/m preferably
2Or below, more preferably no more than 90g/m
2
Disclosed method relates to laminated product is stretched on the degree that fibrous material is damaged among the WO03/047488, and nonelastic layer fully ruptures like this.Therefore, as described in the WO03/047488, the prolongation of laminated product can not be subjected to the restriction of inelastic materials drawing coefficient.
In a preferred embodiment, for laminated product, at least one fibrous layer, preferably all do not torn (with described in the WO03/047488 opposite) fully with bonding two fibrous layers of layers of elastomeric film according to manufacturing of the present invention.Fibrous material is chosen as possesses the elongatedness bigger when the peak load, allowed elastica to take place to stretch and can not hindered like this by fibrous layer than the elasticity of elastic laminate.This selection has guaranteed that also fibrous layer helps the puncture resistance of laminated product, because they are not torn fully during manufacture or rupture.Preferably, at least one in two fibrous layers or the fibrous layer possesses the elongatedness that is higher than laminated product elasticity 10% at least when peak load.This has obtained more specifically describing in PCT/SE2004/001005, and the document in this combination as a reference.
The opacity of material layer makes material layer possess the vision hidden attribute to lower floor's target or pattern.This opacity is recently measured with percentage, and wherein 100% opacity is represented can not see whatever by material layer, and 0% expression material layer is transparent fully.This opacity is measured by the opacity method of testing that describes below, and this method is based on the data of luminous reflectivity.
The opacity of above-mentioned laminated product can obtain by the shading filler being attached to (especially be attached in the elastica) in the laminated product.Dyestuff, coloring agent or brightening agent that this class pigment can be organic or inorganic.Inorganic material such as titanium dioxide, inorganic carbonate, artificial carbon's hydrochlorate, Talcum, nepheline syenite, magnesium hydroxide, aluminum trihydrate family oxide, Muscovitum, natural or synthetical Silicon stone, clay burning product and composition thereof are all examples of preferred shading filler.
Above-mentioned filler preferably is added on the pressing body of film as masterbatch.An example of debita spissitudo is that the weight by film is about 5% filler.
In addition preferably, elastic laminate 10 possesses according to ASTM E96-00Procedure D and is at least 1500g/m
224h, preferably be at least 3000g/m
2The breathability of 24h (water vapor transmission rate).
The open region of layers of elastomeric film preferably is 5% at least, more preferably is 8% at least.This open region is measured by image analysis method, and is defined as the gross area of the summation of hole area divided by membrane sample.
(absorbent cores)
" absorbent cores " is the absorbent structure that is distributed in the absorbability assembly of absorbent article.Absorbent cores 2 can be the type of any routine.Usually the example of the absorbent material that exists has cellulosic fluff pulp, yarn to knit the polymer (so-called superabsorbers) of layer, high-absorbable, absorbent foam, absorbent non-woven cloth material etc.Usually cellulosic fluff pulp and super absorber polymer are combined in the absorbent cores.Super absorber polymer is water-swellable, water-fast organic or inorganic material, and it can absorb at least 20 times of own wt and be in the aqueous solution that comprises 0.9 weight percent sodium chloride.The organic material that is applicable to superabsorbers can comprise for example natural material of polysaccharide, polypeptide etc., and the synthetic material of synthetic water gelatin polymer for example.This class aquogel polymer for example comprises the alkali metal salt of polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyacrylate, polyacrylamide, polyvinyl pyridine etc.Other suitable polymer comprises acryionitrile grafted starch, the acrylic acid grafted starch of hydrolysis, and the isobutene. maleic anhydride copolymers and composition thereof.Aquogel polymer preferably takes place crosslinked so that give material water-insoluble roughly slightly.Preferred superabsorbers material also takes place surface-crosslinked, and the outer surface of superabsorbers granule, fiber, thin slice, spheroid etc. or shell are compared with its inside and had higher crosslink density like this.The superabsorbers material can be any form that is applicable to absorbing composition, comprises granule, fiber, thin slice, spheroid etc.
By using a large amount of superabsorbers materials, can provide the high absorption ability.For comprising such as the hydrophilic fibre substrate of cellulose fibre and the absorbent cores of superabsorbers material that the ratio of superabsorbers material preferably is 10%～90% by weight, more preferably is 30%～70% by weight.
Routinely, absorbent article has and comprises multiwalled absorbent core layer, and these layers distribute at liquid receptivity, liquid and possessing different characteristics aspect performance and the storge quality.Be common to for example thin absorber of baby diaper and incontinence protective clothing, it generally includes the compressed mixed or the hierarchy of cellulosic fluff pulp and super absorber polymer.The size of absorbent cores and absorbability can change, so that be applicable to baby for example or incontinence adult's different purposes.
Absorbent cores can also comprise the Distribution Layer of catching that is arranged on the main absorber, and this Distribution Layer is suitable for before discharge liquor is absorbed by main absorbent core it being received fast and storing temporarily.This class is caught Distribution Layer and is being known in the art and can be made of porous fiberfill or foamed materials.
(diaper)
Diaper expectation shown in Fig. 1 surrounds the bottom of wearer trunk as underwear.It comprises absorbability assembly 3 and framework 4.Framework 4 comprises front portion 5 and rear portion 6.Anterior 5 and rear portion 6 engage each other along two opposed vertical sides by ultrasonic bonding, gummed etc., determine a waist opening and a pair of leg opening of diaper thus.
Anterior 5 and rear portion 6 at least one, preferred two all include aforesaid elastic web material 10.Absorbability assembly 3 is positioned in the described crotch portion 7 at least and with anterior 5 and all overlapping certain distance in rear portion 6, goods have longitudinal direction (y) and horizontal direction (x).
As shown in Figure 2, goods are divided into three parts (front portion, crotch portion and rear portion) along its longitudinal direction thus.Described front portion is limited by following position: the waist edge edge of goods, vertical side of goods, the part of goods leg opening, and the angle that is positioned at the leg opening edge changes the x wire of the most violent position (also being the position of the edge angle of leg opening with respect to horizontal direction change rate maximum).Described rear portion is limited in a similar manner by following position: the waist edge edge of goods, vertical side of goods, the part of goods leg opening, and the angle that is positioned at the leg opening edge changes the x wire of the most violent position (also being the position of the edge angle of leg opening with respect to horizontal direction change rate maximum).Described crotch portion is limited on vertical edge by the edge of goods leg opening, and is limited to widthwise edge along last by two above-mentioned x wires.
Importantly, when using goods, the elastic web material of front/rear portion allows to bend and extend.If nonelastic layer is engaged with this elastic web material, its elasticity and ductility can reduce.According to the present invention, when the goods when to extended state were measured, 3 pairs of described front and rears of absorbability assembly the overlapping of surf zone separately were no more than 20%, preferably are no more than 10%.
" extended state " of goods is defined as at this: goods have extended into all and have been comprised in wherein elastomeric material (such as elastic web material, waist elasticity body, leg elastics) and all extend into such degree on all four directions, and promptly they can not make any position of goods that wrinkle take place and whole goods are fully flat.Goods only extend into the degree that reaches flat form.
According to another embodiment of the present invention, goods have the first half 14 that is limited by product edges and goods cross central line 16, and by product edges and goods cross central line 16 limited latter half of 15.When the goods when to extended state were measured, the surface area of first half 14 was 80%～90% of surface areas of latter half of 15.The absorbent article that has more the underwear profile is provided like this.
In another embodiment, goods possess Breadth Maximum (c) in a lateral direction and possess greatest length (b) in a longitudinal direction, when the goods when to extended state were measured, the Breadth Maximum of goods (c) was 80%～120% with the ratio of greatest length (b), preferred 90%～110%.According to a preferred embodiment, when the goods when to extended state were measured, forward length (b1) was 25%～35% with the ratio (b1/c) of the width (c) of goods, preferred 28%～32%.In addition, when the goods when to extended state were measured, the length at rear portion (b3) was 38%～52% with the ratio (b3/c) of the width (c) of goods.The goods that meet these sizes can provide the absorbent article that has more the underwear profile and mate more reliably.
For good coupling and leakproof safety is provided, when the goods when to extended state were measured, the length of crotch portion 7 (b2) was 10%～40% of goods entire length (b), and is preferred 20%～40%, most preferably 25%～35%.
Crotch portion 7 can comprise crotch portion surface material 21, and this surface material is positioned under the absorbability assembly that pastes the clothing side.According to one embodiment of the present of invention, crotch portion surface material 21 comprises nonelastic substantially Web materials 18, although also can use elastic material.Suitable is that this is nonelastic, and Web materials 18 is nonwoven cloth materials.Substantially nonelastic Web materials 18 is disposed in the crotch portion of goods, and can be respectively crotch portion 7 with anterior 5 and the boundary line at rear portion 6 on or engage with elastic web material 10 near it, like this it along the longitudinal direction of goods between these parts.Although nonelastic Web materials 18 can abundant overlapping anterior 5 with rear portion 6 linking to each other with these parts, it is on most of zone on its surface not remarkable overlapping anterior 5 or rear portion 6.
According to one embodiment of the present of invention, described front and rear all includes elastic web material 10, and crotch portion 7 does not possess this elastic web material substantially, wherein the length of crotch portion 7 (b2) equal substantially anterior 5 and rear portion 6 in distance between the surface layer of elastic web material 10.Yet front and rear 5,6 and boundary line between the crotch portion 7 can coincide with or not coincide with the seam between different surface materials 10 and 21.Seam between so different surface material can extend across any one in front portion, rear portion or the crotch portion.
The nonelastic Web materials 18 of crotch portion 7 can link to each other and be retained as the extended state of selection with the elastic web material 10 at front portion 5 and/or rear portion 6, can not have wrinkle in the nonelastic Web materials 18 of front and back crotch portion seam 8,9 like this.Described wrinkle play a part the absorbent article of Briefs type is pulled to required profile, and good coupling is provided thus, and provide more outward appearance as underwear to goods.
In another embodiment, do not provide independently crotch portion surface material 21, but elastic web material 10 is in still under the absorbability assembly 3 of goods crotch portion.As an alternative, absorbability assembly 3 connects front portion 5 and rear portion 6 alone.
Comprise the top layer 20 of the impermeable backing layer 19 of liquid, fluid permeable according to absorbability assembly 3 of the present invention, and be enclosed in absorbent cores 2 between the two, all these assemblies all are aforesaid.Absorbability assembly 3 can link to each other and be retained as the extended state of selection with the elastic web material 10 at front portion 5 and/or rear portion 6, there are wrinkle in absorbability assembly 3 in the position that it is connected in front portion 5 and rear portion 6 like this.
Can comprise elastic belt 17 according to Briefs type absorbent article of the present invention, this belt comprises the flexible member that fixes with described front and rear.In a replaceability embodiment, only there is one to have the elastic waist belt 17 that fixes with it in front portion 5 and the rear portion 6.Respectively with anterior 5 and the elastic waist belt part 17 that fixes of rear portion 6 also can be connected with each other along described side seams.
When using, no longer need the anterior 5 added resilience sidepieces that link to each other with rear portion 6 according to elastic web material 10 of the present invention.If desired, can certainly provide additional elasticity sidepiece, especially under elastic web material 10 only is arranged in situation in the part of front and/or rear.
As described above, elastic web material 10 possesses at least 40%, preferably at least 50%, more preferably at least 60% opacity.The opacity of elastic web material can provide outward appearance as the cloth to goods, and this is that the situation of diaper is even more important for goods.Particularly go up at the sizable surf zone of diaper (such as big zone of front and rear) and form unique element for elastic web material, and the absorbent cores situation in the less relatively zone (30% or littler) of convering only, the outward appearance of elastic web material is considerably important for the overall appearance of goods.Therefore, possess at least 40% opacity by making elastic web material, diaper shows more cloth sense also more near " standard " underwear than elastic web material transparency condition with higher.Opacity is measured according to disclosed opacity method of testing among the PCT/SE2004/001415.
Expectation is that described elastic web material possesses the puncture resistance that is at least 15N according to ASTM DesignationD3763-02 measurement in addition.Preferably possess at least 20N, the more preferably puncture resistance of 30N at least according to elastic web material of the present invention.
Described elastic web material preferably should possess according to Kawabata and is at least 20, preferably is at least 30, more preferably is at least 40 pliability.Expectation is in addition, it possess according to Kawabata be no more than 50, preferably be no more than 30, more preferably no more than 20, be most preferably not exceeding 10 formability.Expectation is in addition, and described elastic web material possesses and is no more than 40 drapability according to Kawabata.Above-mentioned flexibility according to Kawabata, formability and drapability are measured by the method for testing that provides among the PCT/SE2004/001004.
(elastic test)
How this method shows in multiple load with under the unloaded cycle elastomeric material is tested.Sample is stretched to predetermined prolongation, and carry out be in 0 and described predetermined prolongation between circulation move.The load and the unloaded intensity of expectation go on record.Also promptly remaining the prolongation measured in the permanent prolongation of flaccid material.
Used and to have carried out the tensile testing machine Lioyd LRX that printer/plotter or image software were moved and be equipped with in circulation.Sample is following to be prepared: it is cut into the width of 25mm and the preferred length of long 20mm of spacing of anchor clamps in the tensile testing machine.
Tensile testing machine is calibrated according to description of equipment.Testing required parameter (load and unloaded intensity) is adjusted to:
Crosshead speed: 500mm/min
Spacing jig: 50mm
Prestrain: 0.05N
Sample is placed in the anchor clamps according to sign, and guarantees that sample is in center and vertical fixing in anchor clamps.Tensile testing machine to start, and carry out be in 0 with predetermined prolongation between, equal three cycles of first load of the highest definition.In the end before the one-period, sample was measured permanent prolongation until the dynamics that detects 0.1N by lax 1 minute by the stretching sample, read this prolongation then.
Permanent prolongation after lax should and be measured with said method less than 10%.Like this, 30% elasticity is defined as, and laminated product should possess less than permanent slackness after 10% the prolongation be applied in 30% prolongation in above-mentioned tensile testing machine after.30% prolongation means that length is extended for and is longer than 30% of sample initial length.
(size)
Some embodiment of goods of the present invention possess following size and relative dimensions:
Goods goods width (c)/system rear portion length (b3)/anterior length (b1)/crotch minister degree (b2)/crotch minister degree (b2)/
Product length (b); % goods width (c); % goods width (c); % goods width (c); % goods length (b); %
1 92 47 29 24 26
2 92 50 32 18 20
3 108 39 30 31 29
Absorbability assembly on the front/rear portion overlapping
The overlapping % of goods, the overlapping % in rear portion, rear portion
1 15 5
2 12 12
Though should be appreciated that the present invention has been described with reference to preferred embodiment, can make some modifications within the scope of the claims.The present invention therefore expectation covers interior any modification or the equivalent of known or routine techniques means scope that drops on affiliated field.
Claims (15)
1. Briefs type absorbent article (1) such as diaper, sweat pants or incontinence pant, described goods have framework (4) and comprise the absorbability assembly (3) of absorbent cores (2), described framework (4) comprises front portion (5) and rear portion (6), wherein said front and rear (5; 6) be engaged with each other along two opposed vertical sides, determine a waist opening and a pair of leg opening, described front and rear (5 thus; 6) at least one in comprises elastic web material (10), described goods (4) also comprise along its longitudinal direction and are in crotch portion (7) between front portion (5) and rear portion (6), described front portion (5) has length (b1) in a longitudinal direction, described rear portion (6) has length (b3) in a longitudinal direction, and described crotch portion (7) has length (b2) in a longitudinal direction, described absorbability assembly (3) be arranged at least described crotch portion (7) and with described front and rear (5; 6) all overlapping certain distance, described goods have first half (14) that is limited by product edges and goods cross central line (16) and latter half of (15) that limited by product edges and goods cross central line (16), described goods have longitudinal direction (y) and horizontal direction (x)
It is characterized in that,
When the goods when to extended state are measured, the surface area of described first half (14) be described latter half of (15) surface area 80%～90%.
2. Briefs type absorbent article as claimed in claim 1 (1) is characterized in that,
When the goods when to extended state were measured, the length (b2) of described crotch portion (7) was 10%～40% of goods entire length (b), and is preferred 20%～40%, most preferably 25%～35%.
3. as the Briefs type absorbent article (1) of claim 1 or 2, it is characterized in that,
Described front portion (5) and described rear portion (6) all comprise described elastic web material (10).
4. as the Briefs type absorbent article (1) of claim 2 or 3, it is characterized in that,
Described crotch portion (7) does not have described elastic web material (10) substantially, and the length (b2) of described crotch portion (7) equals the distance between the surface layer of elastic web material (10) in described front portion (5) and rear portion (6) substantially.
5. as the Briefs type absorbent article of any one claim of front, it is characterized in that,
Described absorbability assembly (3) comprises the top layer (20) of the impermeable backing layer of liquid (19), fluid permeable and is enclosed between the two absorbent cores (2).
6. as any one Briefs type absorbent article of claim 1-5, it is characterized in that,
Described crotch portion (7) comprises crotch portion surface material (21), and this surface material is positioned under the absorbability assembly (3) that pastes the clothing side.
7. Briefs type absorbent article as claimed in claim 6 is characterized in that,
Described crotch portion's surface material (21) comprises nonelastic substantially Web materials (18).
8. Briefs type absorbent article as claimed in claim 7 is characterized in that,
Described nonelastic Web materials (18) is a nonwoven cloth material.
9. as the Briefs type absorbent article of any one claim of front, it is characterized in that,
Described elastic web material is laminated product (10), and it is made of first and second layers (11,12) of fibrous material and the layers of elastomeric film (13) that is between described first and second fibrous layers.
10. Briefs type absorbent article as claimed in claim 9 is characterized in that,
Described layers of elastomeric film (13) is a breathable.
11. the Briefs type absorbent article as claim 10 is characterized in that,
Described elastic laminate (10) has according to ASTM E96-00 Procedure D and is at least 1500g/m
224h, preferably be at least 3000g/m
2The water vapor transmission rate of 24h.
12. Briefs type absorbent article as claimed in claim 9 is characterized in that,
Described elastic laminate (10) comprises first and second fibrous layers (11,12) and the breathable layers of elastomeric film of being made by spunbonded materials (13), and described first and second fibrous layers possess 10g/m separately
2～35g/m
2, preferred 12g/m
2～30g/m
2, more preferably 15g/m
2～25g/m
2Basic weight, described breathable layers of elastomeric film (13) possesses 20g/m
2～80g/m
2, preferred 20g/m
2～60g/m
2Basic weight, described elastic laminate (10) possesses according to ASTME96-00 Procedure D and is at least 1500g/m
224h, preferably be at least 3000g/m
2The water vapor transmission rate of 24h.
13. the Briefs type absorbent article as any one claim of front is characterized in that,
Described elastic web material (10) possesses the 100g/m of being no more than
2, preferably be no more than 90g/m
2Basic weight.
14. the Briefs type absorbent article as any one claim of front is characterized in that,
When measuring according to the flexibility test method of this description regulation, described elastic web material (10) possesses at least 30%, preferably at least 50% in a lateral direction at goods, more preferably 70% elasticity.
15. as any one Briefs type absorbent article of claim 1-14, it is characterized in that,
When measuring according to the flexibility test method of this description regulation, described elastic web material (10) possesses at least 20% elasticity on the goods longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010155618A CN101822592A (en) | 2005-03-02 | 2005-03-02 | The absorbent article of Briefs type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010155618A CN101822592A (en) | 2005-03-02 | 2005-03-02 | The absorbent article of Briefs type |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800481852A Division CN101119690A (en) | 2005-03-02 | 2005-03-02 | Underdrawers type absorbent article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101822592A true CN101822592A (en) | 2010-09-08 |
Family
ID=42686902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010155618A Pending CN101822592A (en) | 2005-03-02 | 2005-03-02 | The absorbent article of Briefs type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101822592A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108697557A (en) * | 2016-02-23 | 2018-10-23 | 大王制纸株式会社 | Absorbent commodity and its manufacturing method |
| CN109223322A (en) * | 2018-11-13 | 2019-01-18 | 陈利群 | Ventilating paper nappies |
-
2005
- 2005-03-02 CN CN201010155618A patent/CN101822592A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108697557A (en) * | 2016-02-23 | 2018-10-23 | 大王制纸株式会社 | Absorbent commodity and its manufacturing method |
| CN109223322A (en) * | 2018-11-13 | 2019-01-18 | 陈利群 | Ventilating paper nappies |
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Application publication date: 20100908 |