CN1301091C - Briefs type diaper and briefs type absorbent article - Google Patents

Briefs type diaper and briefs type absorbent article Download PDF

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Publication number
CN1301091C
CN1301091C CNB031370535A CN03137053A CN1301091C CN 1301091 C CN1301091 C CN 1301091C CN B031370535 A CNB031370535 A CN B031370535A CN 03137053 A CN03137053 A CN 03137053A CN 1301091 C CN1301091 C CN 1301091C
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China
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waist
mentioned
briefs type
elastomeric element
type diaper
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Expired - Fee Related
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CNB031370535A
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CN1461634A (en
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佐佐木纯
早瀬彻
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Kao Corp
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Kao Corp
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Priority claimed from JP2002160679A external-priority patent/JP2004000344A/en
Priority claimed from JP2002244313A external-priority patent/JP4037216B2/en
Priority claimed from JP2003121666A external-priority patent/JP4139264B2/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN1461634A publication Critical patent/CN1461634A/en
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Publication of CN1301091C publication Critical patent/CN1301091C/en
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Abstract

The present invention provides a briefs-type diaper and a briefs-type absorbent article for improving over a problem of a conventional briefs-type diaper and a briefs-type absorbent article which have the same outlook and difficult in improving wearability and comfort in wearing. A plurality of waist peripheral members with a specific elasticity are disposed on the laterial side of the waist periphery at a fine clearance in order to set the elasticity of the waist peripheral part of the briefs-type diaper or the briefs-type absorbent article with a specified range, and furthermore set the rigidity of the absorbent article below a specified value according to the need, or enable the amount of coating of the adhesive on the outer layer with a specific distribution.

Description

Briefs type diaper and Briefs type absorbent commodity
Technical field
The Briefs type absorbent commodity and the manufacture method thereof that the present invention relates to the Briefs type diaper and use as Briefs type diaper, Briefs type hygienic article.
Background technology
Sell on the market the various Briefs type diapers that use or adult's usefulness as the child at higher monthly age are arranged.Because the Briefs type diaper that the child uses is used as from the type of diaper to the process of common underwear conversion, the Briefs type diaper of adult's usefulness is as the type that converts from common underwear, so best these Briefs type diapers can be as much as possible according to the sensation dress identical with common underwear.
Thus, in recent years, the material of Briefs type diaper adopts the type near the sensation of common underwear.Same for absorber main body important in the Briefs type diaper, in recent years, people's preference is pasted the soft type higher with property mutually with wearer's skin.In addition, for the outward appearance (dress ornament) of Briefs type diaper, people wish that it is near common underwear equally.Also have, follow the improvement of such Briefs type diaper, also carried out the exploitation of the hygienic article of Briefs type.
As a kind of method of the leakageresistance that improves diaper, in the scope in full week of the waist periphery of diaper, elastomeric element is set, on this waist periphery, form waist wrinkle pleat.If in the Briefs type diaper that adopts soft absorber main body, form waist wrinkle pleat, then because the effect of above-mentioned elastomeric element in the absorber main body, produces fold, its outward appearance is difficult to as common underwear.
In the gentle remollescent present period that advances absorber, adopt and in the absorber main body, concentrate the necessity step-down that the such elastomeric element of fold is arranged.Also have following situation, that is,, preferably do not form waist wrinkle pleat for the outward appearance at the position of improving absorber main body place.
Such as, TOHKEMY 2001-61890 document, TOHKEMY 2001-286504 document, TOHKEMY 2001-293030 document, and in the TOHKEMY 2002-178428 document, describing has following Briefs type diaper, wherein, when forming the Briefs type diaper, the zone constituting the waist periphery is provided with many elastomeric elements, corresponding predetermined position with this elastomeric element cuts off afterwards, thus, only at the non-existent position of absorber main body (absorptive core), form waist wrinkle pleat.
Only in the non-existent position of absorber main body (absorptive core), form in the Briefs type diaper of waist wrinkle pleat, must be by being arranged near the elastomeric element of the middle part of the side (ウ エ ス ト) peristome, and many elastomeric elements that form above-mentioned waist wrinkle pleat, prevent with of the leakage (below be called " abdomen leakage ") of this Briefs type diaper from veutro, and from the leakage of dorsal part (being called " back of the body leaks " below).Thus,, be formed with the occasion of the Briefs type diaper of waist wrinkle pleat, this stress is set in bigger value greater than position at absorber main body place at the corresponding shrinkage stress of many elastomeric elements that are used to form waist wrinkle pleat.
But, be set in bigger value if will be used to form the corresponding shrinkage stress of the elastomeric element of waist wrinkle pleat, then be difficult to dress, or in wearing process, reining on the health that trace is attached to the wearer of this elastomeric element, body local is oppressed more, and sense comfortable and easy to wear is low more.In addition, itself be difficult to above-mentioned elastomeric element is fixed in desired location, such as, when the wearing of Briefs type diaper, or in the process of dress, the fixedly disengagement of the elastomeric element of a part, this elastic components contract.If the fixedly disengagement of elastomeric element, then the elastic shrinkage at this position dies down, and not only be easy to generate abdomen and leak, or the back of the body leaks, and the Briefs type diaper drops easily, or come off.Because the Briefs type diaper is used for movable frequent wearer more,, all do not drop so require various relatively motions.
Summary of the invention
So the 1st problem of the present invention is to provide a kind of Briefs type diaper, the material that it does not adopt high price has sufficient leakageresistance, and pattern and sense comfortable and easy to wear are higher.
In addition, the 2nd problem of the present invention is to provide a kind of Briefs type diaper, it is keeping the state that prevents tenesmus property, is difficult to produce the compressing vestige (being called " rubber is reined in trace " below) that is caused by elastomeric element, can make that the wearer is actual to experience " soft ", " softness ".
The 3rd problem of the present invention is to provide a kind of Briefs type absorbent commodity, this Briefs type absorbent commodity makes outward appearance identical with the outward appearance of common underwear easily, and dress property, wearing feeling and anti-leakage are good, even carry out the wearer under the situation of various motions, still are difficult to tenesmus.
In addition, the 4th problem of the present invention is to provide a kind of manufacture method of Briefs type absorbent commodity, it obtains following Briefs type absorbent commodity easily, these article make outward appearance identical with the outward appearance of common underwear easily, and dress property, wearing feeling and anti-leakage are good, even carry out the wearer under the situation of various motions, still be difficult to tenesmus.
Below the present invention is specifically described.In addition, in order to understand the present invention easily, by bracketed mode, the label in the labelling accompanying drawing, still, the present invention is not limited to illustrated form therefrom.
The 1st form of the present invention provides a kind of Briefs type diaper (being called " Briefs type diaper I " below), solve above-mentioned the 1st problem thus, this Briefs type diaper (1,100,200) comprise the surfacing (21) of liquid permeability, the leakproofing material of non-liquid permeability (22), and the absorber between this surfacing and leakproofing material (23), it is characterized in that: at the sidepiece longitudinally of the absorber of the waist periphery (9) of the waist that is arranged in the wearer, have at least 2 layers of thin slice, and has the flank panel region (41A that does not have absorber, 41B, 42A, 42B), with regard to above-mentioned waist periphery, at least at 2 layers of thin slice (24A of above-mentioned flank panel region, 24B), setting is according to many elastomeric elements of the average headway below the 5mm (32), the flexural rigidity of above-mentioned absorber is below 350mN/50mm, be used to make the load of whole waist periphery elongation 80% in the scope of 2～8N, represent by A that when the radical of the elastomeric element that is arranged at the flank panel region load that is used to make whole above-mentioned waist periphery elongation 80% then satisfies B/A≤0.4N during by BN.
Here, " flexural rigidity of absorber " " bending creep (Network リ one プ) that 3 point loads produce " of referring in JIS K7116, to stipulate.The concrete algoscopy of " flexural rigidity of absorber " will specifically describe in the back.
In Briefs type diaper I,, produce dislocation owing to be used to make load (in other words, the stress value the during elongation 80% of the whole waist periphery) B of whole waist periphery elongation 80% in the scope of 2～8N, to be difficult to when wearing.In addition, because the radical A with the elastomeric element that constitutes the waist periphery removes the value B/A of load B below 0.4N, so can reduce the pressure (when wearing Briefs type diaper I, imposing on the linear pressure of wearer's waist by above-mentioned elastomeric element) under the transversal part of elastomeric element broad ways.Promptly, since will be in the state that is assemblied in diaper every elastomeric element the elongation load (in other words, the stress value of every elastomeric element) is set in below the setting, reins in trace, and can make the wearer have better wearing feeling so can suppress the rubber of this elastomeric element.Said here " elongation load " instigates the elastomeric element elongation necessary load of specific length (identical below).
In addition, although thereby the rigidity of absorber is soft below 350mN/50mm, because the elongation load of every elastomeric element is still less,, do not make the wearer have sense of discomfort so on absorber, do not produce than macrofold.In addition, can improve dress ornament.In addition, can avoid neglectful motion, on absorber, produce the situation of bigger fold owing to the wearer.
In addition, by adopting scheme as described above, such as, there is not the flank panel region, even in the full week of waist periphery, all be provided with under the situation of elastomeric element, still have following advantage.That is, it is soft that the wearer experienced is successive between the part of the side of part with absorber and absorber, and the sense of discomfort that makes when wearing diaper often to be felt reduces.In addition, prevent on absorber, produce bigger fold because when wear, make the absorber sidepiece near the third side to, at sidepiece formation bag constructions, so can prevent excremental dyeing flower.In addition, owing on absorber, be difficult to form wrinkle pleat (fold), thus can guarantee the width of this absorber, even under the situation of the urine of discharging with advantage, also can steadily will the urine collection.
In Briefs type diaper I, also can form like this, that is, above-mentioned 2 layers of thin slice are for being arranged on more the non-woven fabrics of a side of leaving with above-mentioned wearer than above-mentioned leakproofing material, and the layer weight of above-mentioned non-woven fabrics (level ground amount) is at 10～30g/m 2Scope in, the fiber number of the fiber of formation non-woven fabrics is in the scope of 1～4dtex, and the whole soft property of one of them is along the width of goods, below 0.1N/30mm, above-mentioned elastomeric element and above-mentioned 2 layers of thin slice are by being arranged at the hydrophobicity adhesive securement of one deck thin slice one side at least.
If such formation, owing to adopt non-woven fabrics with predetermined physical properties, so can make the wearer have soft sense of touch.In addition, because conduct is that the density that is arranged at the hydrophobicity bonding agent of one of them non-woven fabrics side increases in the part by the result that elastomeric element forms the wrinkle pleat, so prevent excremental dyeing flower.In addition, " whole soft property " refers to estimate in the test evaluation project of soft property of non-woven fabrics etc. 1.The concrete test method of " whole soft property " will be explained hereinafter.
Also can form like this, promptly, on the middle waist of Briefs type diaper I, according to the average headway below the 3mm, be provided with respectively and form the many elastomeric elements of using along the wrinkle pleat that circumferentially extends, the load that is used to make whole middle part of the side peristome elongation 80% is in the scope of 3～6N, and the radical of the elastomeric element in above-mentioned in the waist is represented by C, when being used to make the load of whole middle part of the side peristome elongation 80% represent by D (N), the then relation of D/C≤0.8N establishment.
In the occasion that constitutes like this, owing to make pressure under the elastomeric element at middle waist place of Briefs type diaper I (when wearing Briefs type diaper I, above-mentioned elastomeric element puts on the pressure on wearer's the middle part of the side) disperse, so can reduce to drain, the sense of discomfort when taking off diaper.In addition, identical with the occasion of wearer's waist, at wearer's place, the middle part of the side, also can eliminate the problem that rubber is reined in trace.
The 2nd form of the present invention provides a kind of Briefs type diaper (being called " Briefs type diaper II " below), solve the 2nd above-mentioned problem thus, this Briefs type diaper (300) comprises the surfacing (21) of liquid permeability, the leakproofing material of non-liquid permeability (22), and the absorber (23A) that is arranged at the liquid retainability between these two parts, on the both sides of the waist periphery (9) of the waist that is positioned at the wearer, waist elastomeric element (32) with a plurality of circumferential settings, the stress in corresponding 2 times of whens elongation that it is characterized in that above-mentioned waist elastomeric element is below 20gf (19.6cN), stress 2 times below of stress during 3 times of elongations when 2 times of elongations, above-mentioned many waist elastomeric elements are provided with in the mode that corresponding average headway remains on below the 5mm, and be fixed in 2 synusia (24A, 24B) between.
According to this Briefs type diaper II, because the stress in waist elastomeric element corresponding 2 times of whens elongation is below 20gf (19.6cN), so can prevent in the wearing process of diaper, generation rubber is reined in trace on wearer's skin.Simultaneously, can make user (give the wearer (newborn child etc.) and the wearer of Briefs type diaper, wear the guardian of Briefs type diaper etc.), reality is experienced " soft ", " softness ".Percentage elongation when in addition, " 2 times of elongations " of waist elastomeric element newborn child of being equivalent to the size (physique) of standard wears.
In addition, because stress 2 times below of the stress in corresponding 3 times of whens elongation of waist elastomeric element when 2 times of elongations wait when wearing Briefs type diaper II for newborn child etc. so be guardian equally, still can not experience bigger resistance.
In addition, because many waist elastomeric elements are provided with in the mode that corresponding average headway remains on below the 5mm, so the waist elastomeric element of the necessary radical of can guaranteeing to drop preventing to misplace is arranged at the waist place.
Also have, owing to a plurality of waist elastomeric elements are fixed between 2 layers of thin slice, thus prevent so-called " disengagement " of elastomeric element, so can firmly be fixed.
If like this, adopt Briefs type diaper II, can prevent the dislocation tenesmus, can prevent from simultaneously to rein in trace producing rubber from now on, in addition, can make that user is actual experiences " soft ", " softness ".
The 3rd form of the present invention provides a kind of Briefs type absorbent commodity, solve above-mentioned the 3rd problem thus, this Briefs type absorbent commodity (400) comprises absorber main body (20), in this absorber main body, between the leakproofing material of the surfacing (21) of liquid permeability and non-liquid permeability, be provided with the absorber (23) of liquid retainability; Outer layer body (24) is fixed with this absorber main body on it; Many waist elastomeric elements (32), these many waist elastomeric elements be arranged at this absorber main body about two outsides, above-mentioned outer layer body comprises by the stacked a plurality of thin slices of bonding agent, above-mentioned waist elastomeric element is fixed in 2 layers of thin slice (24A that constitute above-mentioned outer layer body, 24B), it is characterized in that each waist elastomeric element along last crotch direction according to the spacing setting below the 5mm, and make 2 times of needed loads of each waist elastomeric element elongation below the 19.6cN/ root, make 3 times of needed loads of its elongation make its below 2 times of 2 times of needed loads of elongation, when wearing, make the waist periphery of the waist that is arranged at the wearer extend 80% needed load in the scope of 2～8N, the layer weight of the bonding agent between above-mentioned 2 layers of thin slice, with compare under the zone that is fixed with the absorber main body, more around this zone, the layer weight of the bonding agent between 2 layers of thin slice under the above-mentioned zone is at 1～10g/m 2Scope in.
Above-mentioned waist elastomeric element is the elastomeric element that is used to form waist wrinkle pleat, and the increment rate of the shrinkage stress of the increase of the corresponding relatively percentage elongation in this waist elastomeric element is less.
Resemble in the Briefs type absorbent commodity of above-mentioned such setting at such waist elastomeric element, in fact not because the effect of the contractility of waist elastomeric element, on the absorber main body, form the situation of wrinkle pleat (fold), so make its outward appearance identical easily with the outward appearance of common underwear.In addition, owing to can widely enlarge middle part of the side peristome easily when wearing, dress property is higher.
If be conceived to the distribution of shrinkage stress of the waist elastomeric element of whole waist periphery, even then in the process of dress, it distributes and still is difficult to produce biasing, so, also be difficult to produce the waist elastomeric element rein on the health that trace is attached to the wearer more, situation that body local is oppressed more, thus, wearing feeling is good.
In addition, because can be at whole waist periphery, acquisition is enough to prevent the shrinkage stress that drops, even and in wearing process, still can easily each waist elastomeric element be fixed in desired location really, can prevent easily that abdomen from leaking, the back of the body leaks, and can prevent easily that the Briefs type absorbent commodity from dropping easily, situation about coming off easily.
Also have, because by resembling the coating amount of the bonding agent that above-mentioned selected formation outer layer body uses, even in the wearing process of Briefs type absorbent commodity, still can really the waist elastomeric element be fixed in desired location, can suppress simultaneously the reduction of the feel of waist periphery, the reduction of flexibility is so can obtain the good Briefs type absorbent commodity of wearing feeling equally according to from this respect.
The 4th form of the present invention provides the manufacture method of a kind of Briefs type absorbent commodity (400), thus, solve above-mentioned the 4th problem, this Briefs type absorbent commodity comprises absorber main body (20), in this absorber main body, between the leakproofing material (22) of the surfacing (21) of liquid permeability and non-liquid permeability, be provided with the absorber (23) of liquid retainability; Outer layer body (24) is fixed with this absorber main body on it; Many waist elastomeric elements (32), these many waist elastomeric elements be arranged at this absorber main body about two outsides, above-mentioned outer layer body comprises by the stacked a plurality of layers of bonding agent (54), above-mentioned waist elastomeric element is fixed in 2 layers of thin slice (24A that constitute above-mentioned outer layer body, 24B), it is characterized in that this method comprises following operation: the 1st operation, promptly, one band shape the 1st sheeting (50) that forms in 2 layers of thin slice is vertically transported the 1st sheeting as the mode of moving direction with handle, simultaneously on the 1st sheeting, be arranged at when as the Briefs type absorbent commodity on wearer's the zone of waist periphery (9) of waist, coating is along the successive bonding agent of the length direction of the 1st sheeting; The 2nd operation, that is, and after the elastomer (56) of the longer size that constitutes above-mentioned waist elastomeric element is gone up the coating interfacial agent, on the elastomer of this longer size, along the elastomeric length direction of this longer size adhesive-applying off and on; The 3rd operation, that is, the elastomer of the longer size that will handle through the 2nd operation with method of clamping is fixed in above-mentioned the 1st sheeting, and constitutes between another zonal the 2nd sheeting in 2 layers of thin slice; The 4th operation, that is, in the elastomer of above-mentioned longer size, in the zone of the above-mentioned bonding agent of the 2nd operation uncoated, from the 1st sheeting, or the outside of the 2nd sheeting, push a plurality of overshooting shape parts (66), intermittent processing is carried out in this zone; The 5th operation promptly, is fixed in above-mentioned absorber main body on above-mentioned the 1st sheeting, or is fixed on above-mentioned the 2nd sheeting.
Because by on the elastomer of the longer size that forms the waist elastomeric element, applying interfacial agent (interfacial agent drug), promptly the elastomer in this longer size adopts under the situation of the lower type of fiber number, still can be suppressed in the manufacture process of Briefs type absorbent commodity, the situation of fracture takes place at undesirable position, can easily make the Briefs type absorbent commodity of above-mentioned the 3rd form.
Description of drawings
Fig. 1 is the axonometric chart of the embodiment of the Briefs type diaper I of expression the 1st form of the present invention;
The vertical view of the elongation state of the state of Fig. 2 before for the assembling of watching from surfacing side Briefs type diaper shown in Figure 1;
Fig. 3 is the cutaway view along the III-III line among Fig. 2;
Fig. 4 (a) is the cutaway view along the IV-IV line among Fig. 2, and Fig. 4 (b) is at the position that is equivalent to IV-IV line shown in Figure 2, the cutaway view when the Briefs type diaper in past is cut off;
Fig. 5 (a) and Fig. 5 (b) are respectively the figure of the sample of the whole soft property of expression test;
Fig. 6 (a) is the microphotograph in cross section of waist periphery sidepiece of the embodiment of Briefs type diaper I, and Fig. 6 (b) is the microphotograph in the cross section of the waist periphery sidepiece of Briefs type diaper in the past;
Fig. 7 is the axonometric chart of another embodiment of the Briefs type diaper I of expression the 1st form of the present invention;
Fig. 8 is the also axonometric chart of an embodiment of the Briefs type diaper I of expression the 1st form of the present invention;
Fig. 9 is the axonometric chart of the embodiment of the Briefs type diaper II of expression the 2nd form of the present invention;
The vertical view of the elongation state of the state of Figure 10 before for the assembling of watching from surfacing side Briefs type diaper shown in Figure 9;
Figure 11 is the cutaway view along the XI-XI line among Figure 10;
Figure 12 is the cutaway view along the XII-XII line among Figure 10;
Figure 13 is the axonometric chart of an embodiment of the Briefs type absorbent commodity (Briefs type diaper) of representing the 3rd form of the present invention in a schematic way;
Figure 14 is with the unfolded state of Briefs type diaper shown in Figure 13, the schematic plan of watching from a side that contacts with the wearer;
Figure 15 is the sketch map along the section of the XV-XV line of Figure 14;
Figure 16 is the sketch map along the section of the XVI-XVI line of Figure 14;
Figure 17 is the axonometric chart of the part of the manufacturing process in the manufacture method of the Briefs type absorbent commodity (Briefs type diaper) of representing the 4th form of the present invention in a schematic way;
Figure 18 is the axonometric chart of another part of the manufacturing process in the manufacture method of the Briefs type absorbent commodity (Briefs type diaper) of representing the 4th form of the present invention in a schematic way;
Figure 19 is the also axonometric chart of a part of the manufacturing process in the manufacture method of the Briefs type absorbent commodity (Briefs type diaper) of representing the 4th form of the present invention in a schematic way;
Figure 20 is the axonometric chart of an example of expression Briefs type diaper in the past.
Concrete form of implementation
With reference to the accompanying drawings, successively to the manufacture method of the embodiment of the embodiment of various forms of Briefs type diapers of the present invention, Briefs type absorbent commodity and Briefs type absorbent commodity
Embodiment specifically describes.
The 1st embodiment of＜Briefs type diaper I: the Briefs type diaper I that elastomeric element is set in the flank panel region 〉
Fig. 1 is expression the present invention
The axonometric chart of an embodiment of Briefs type diaper I (baby with);
Illustrated Briefs type diaper 1 comprises veutro portion 2, and this veutro portion 2 is arranged at wearer's veutro; Drosal part 3, this drosal part 3 is arranged at dorsal part; Lower crotch 4, this lower crotch 4 is between this veutro portion 2 and drosal part 3.The both side edges portion of this veutro portion 2 and drosal part 3 is bonded with each other, and forms middle part of the side peristome 5 and pair of leg peristome 6A, 6B.
On the waist 7 that is arranged in middle part of the side peristome 5 sides,, form middle part of the side wrinkle pleat 8 in scope along the width (health width) of diaper.Should middle waist 7 be a zone that comprises the end of middle part of the side peristome 5 one sides, from Briefs type diaper 1 vertically (go up the crotch direction) when watching the width of waist 7, be equivalent between the end (referring to the 6A of leg opening portion, the end of middle part of the side peristome 5 one sides of 6B) of the end of middle part of the side peristome 5 one sides and the 6A of leg opening portion, 6B one side distance 1/3.
In addition, waist periphery 9 is arranged in the below of waist 7, on this waist periphery 9, is formed with waist wrinkle pleat 10.This waist periphery 9 is the zone that is connected with middle waist 7, is equivalent to 2/3 of above-mentioned distance from the width of this waist periphery 9 of vertically (going up the crotch direction) when watching of Briefs type diaper 1.Above-mentioned waist wrinkle pleat 10 is not arranged at the full week of waist periphery 9, and only is arranged at sidepiece.
At pair of leg peristome 6A, in the respective openings portion of 6B, in the scope in full week of this peristome, be formed with lower limb and enclose wrinkle pleat 11A, 11B, enclose wrinkle pleat 11A, 11B near these lower limbs, be provided with standing gather 26A, 26B (in Fig. 1, standing gather 26A only being shown) as three-dimensional protection.
Fig. 2 is the vertical view of the elongation state of the state before the assembling of watching with wearer's contact skin one side Briefs type diaper 1 shown in Figure 1.In addition, Fig. 3 is the cutaway view along the III-III line among Fig. 2.In addition, in Fig. 2, for convenience, omit the diagram of standing gather 26A, 26B.
In Fig. 2 and Fig. 3, Briefs type diaper 1 comprises in fact vertically long absorber main body 20, and outer layer body 24, and this outer layer body 24 is arranged at leakproofing material 22 1 sides of absorber main body 20.
This absorber main body 20 comprises the surfacing 21 of liquid permeability; Leakproofing material 22, this leakproofing material 22 are the inside material of non-liquid permeability; The absorber 23 of liquid retainability is arranged between above-mentioned two parts 21,22, and above-mentioned absorber 23 is covered by absorber cardboard lining 25.
Outer layer body 24 comprises 2 layers of sheeting, that is, the lower limb of leakproofing material 22 sides encloses non-woven fabrics 24A; Outer non-woven fabrics 24B, this skin non-woven fabrics 24B is provided with according to enclosing the mode that non-woven fabrics 24A faces with lower limb, forms the outmost surface of Briefs type diaper 1.
Surfacing 21 all is rectangle with leakproofing material 22.Above-mentioned absorber 23 is rectangle, or is the sand glass shape of removing the pars intermedia on rectangular two long limits along interior side direction.This surfacing 21, leakproofing material 22 and absorber 23 are bonded with each other by predetermined way, as a whole, form rectangular absorber main body 20.
This absorber main body 20 is arranged on the basic pars intermedia of outer layer body 24 according to the corresponding to mode of length direction of its length direction and outer layer body 24.This outer layer body 24 forms the profile of Briefs type diaper 1.The outer non-woven fabrics 24B that constitutes outer layer body 24 forms the outmost surface of Briefs type diaper 1.Lower limb encloses non-woven fabrics 24A and engages with the inner face side of outer non-woven fabrics 24B.Outer layer body 24 is in the inboard of vertical pars intermedia, with the timing hourglass shape of its both side edges removal.
Enclose between non-woven fabrics 24A and the outer non-woven fabrics 24B at the lower limb that constitutes outer layer body 24, the lower limb about the edge enclose peristome 6A, 6B around, lower limb encloses the elastomeric element 30A of portion, 30B and is respectively arranged with 3, they are according to the elongation state setting.Thus, when assembling Briefs type diaper 1, be formed on lower limb enclose peristome 6A, 6B around totally continuous lower limb enclose wrinkle pleat 11A, 11B.
In the left and right sides of absorber main body 20, be formed with standing gather 26A, 26B.Each standing gather 26A, 26B comprise stiff end 27A, 27B, and this stiff end 27A, 27B are vertical along absorber main body 20, are fixed on the surfacing 21; And loose free end 28A, 28B.Near this free end 28A, 28B, be provided with standing gather elastomeric element 29A, 29B with elongation state.Thus, when wearing Briefs type diaper 1, free end 28A, 28B are positioned at the inboard from overlooking at least, and standing gather 26A, 26B erect towards wearer's skin direction, prevent along the leakage of the liquid of the width of absorber main body 20.
Fig. 4 (a) is the cutaway view along the IV-IV line among Fig. 2.Below with reference to Fig. 1, Fig. 2 and Fig. 4 (a) are described middle part of the side wrinkle pleat 8 and waist wrinkle pleat 10.
End, front and back in outer layer body 24, along front and back ora terminalis 5A, 5B (edge of the middle part of the side peristome 5 of the state of assembling Briefs type diaper 1), a plurality of middle waist elastic members 31 are along the circumferential setting of diaper.With elongation state, enclose non-woven fabrics 24A and outer non-woven fabrics 24B by lower limb, clamping should middle waist elastic members 31.Should middle waist elastic members 31 be provided with in the following manner respectively, this mode is: when with the both side edges 3A of both side edges 2A, the 2B of the veutro portion 2 of Briefs type diaper 1 and drosal part 3, when 3B is bonded with each other, corresponding in waist elastic members 31 an end group this overlap with the other end of itself.Thus, middle waist elastic members 31 is circumferentially fitly arranged towards the middle part of the side peristome 5 of Briefs type diaper 1, and as shown in Figure 1, on middle part of the side peristome 5, pleat 8 wrinkles to be formed with in fact the middle part of the side of ring-shaped continuous.
Waist periphery 9 is as aforementioned, be between the end of enclosing peristome 6A, 6B by end and lower limb with middle part of the side peristome 5 diaper longitudinally distance carry out 3 times and cut apart, be divided into 3 when regional, except near remaining 2 zones 1 zone of middle part of the side peristome 5.In the present embodiment, intermediary 1 zone in above-mentioned 3 zones is provided with waist elastomeric element 32.
Each waist elastomeric element 32 is at the veutro portion 2 and drosal part 3 places of Briefs type diaper 1, is arranged at regional 41A, the 41B in the outside of the both side edges of absorber 23; 42A, 42B (flank panel region).In addition, each waist elastomeric element 32 encloses non-woven fabrics 24A and outer non-woven fabrics 24B according to the mode that can present telescopic resilience by lower limb, is held fixing with elongation state.Each waist elastomeric element 32 is provided with in the following manner, this mode is: when with the both side edges 3A of both side edges 2A, the 2B of the veutro portion 2 of Briefs type diaper 1 and drosal part 3, when 3B is bonded with each other, this end with another predetermined waist elastomeric element 32 of a corresponding end group of this waist elastomeric element 32 overlaps, by 2 waist elastomeric elements 32, obtain successive in fact 1 elastomeric element.Because such formation, thus waist elastomeric element 32 to the circumferentially setting fitly of the waist periphery 9 of Briefs type diaper 1, regional 41A, 41B in the outside of the both side edges of the absorber 23 of Briefs type diaper 1; 42A, 42B as shown in Figure 1, are formed with waist wrinkle pleat 10.
In the present embodiment, waist with suitable stress applying wearer, do not produce the dislocation tenesmus, in addition, prevent to surpass necessary degree, with the fastening viewpoint of wearer's waist, preferably will be used to make the load of whole waist periphery 9 elongations 80% to be set in the scope of 2～8N, particularly preferably this load is set in the scope of 3～7N, wherein, especially preferably this load is set in the scope of 4～6N.In addition, when being used to make the load of whole waist periphery 9 elongations 80% is " B " N, and when the radical of the elastomeric element of formation waist periphery 9 was " A ", the value " B/A " that best B obtains divided by A was below 0.4N, particularly be preferably in below the 0.3N, wherein especially be preferably in below the 0.25N.
By as above-mentioned, set the load " B/A " that is used to make every waist elastomeric element 1 elongation 80% that constitutes waist periphery 9, can reduce the transversal elastomeric element of broad ways part under the pressure (linear pressure) of (wearer's skin side).Thus, can be suppressed in the process of wearing Briefs type diaper 1,, produce the situation that rubber is reined in trace at wearer's waist place.In addition, can make the wearer obtain better wearing feeling.
In addition, above-mentioned " being used to extend 80% load " refers to cyclic situation, only cut out the waist periphery of Briefs type diaper, the length that makes this waist periphery radially extend maximum occasion is 100% o'clock, makes above-mentioned waist periphery be elongated to the load of 80% usefulness.This load can pass through Tan Xilun (Tensilon) universal testing machine and measure.
In addition, be preferably in below the 350mN/50mm, particularly be preferably in below the 300mN/50mm, wherein especially be preferably in below the 250mN/50mm at the flexural rigidity of the absorber 23 of present embodiment.By such setting, can realize soft absorber 23.Because absorber 23 is soft, so the wearer is not caused sense of discomfort.In addition, can make diaper have dress ornament.In addition, even under the situation of the careless motion of wearer, on absorber 23, still do not produce bigger fold.
In order to form so softish absorber 23, must be not more than the such condition of predetermined value according to the thickness of whole diaper, suitably determine the layer weight of the branch comb paper pulp (separating fine パ Le プ) that absorber is adopted, the condition of the punching press during molding etc.In addition, in the occasion of using according to the mode of in absorber 23, mixing water absorbent polymer, owing to the mixing of this polymer as the restrictive condition effect that absorber is limbered up, so preferably adopt a small amount of polymer that gets final product that uses, that is, use the high performance polymer that can absorb a large amount of moisture slightly.
In addition, the mensuration of the bending rigidity of absorber adopts Tan Xilun (Tensilon) universal testing machine to measure " RTC-1150A of the オ リ エ of Co., Ltd. Application テ Star Network system ", carry out (R1=5.0 ± 0.1mm, R2=5.0 ± 0.2mm is certain) according to JIS specification K7116 method (test method of the flexural property of plastics).
According to across the span L between the edge being mode between two edges of supporting base of 50mm, place test film, according to the mode that just contacts, the pressure head leading section is set with test film.At load cell (ロ one De セ Le) is 5kg (range (レ Application ジ) is 1.96N), and the condition that speed 30mm/ divides descends pressure head, obtains load-sag curve.With the maximum of acquired bending resistance load as bending rigid value (mN/50mm).
Test film is to adopt the diaper of having removed rivel, according to not comprising the folding line that mensuration is impacted, the mode of fold etc., the lengthwise dimension that comprises the diaper of the building block from the surfacing to the leakproofing material are the rectangular size cutting that 50mm, width are of a size of 80mm.The length of the minor face of included " 50mm " finger to finger test sheet in the unit of bending rigid value, the amplitude of the test film of the pressure head deflection when it is the quilt test.
In the Briefs type diaper 1 of present embodiment, never hinder the easy contact of diaper, prevent the effect of excremental dyeing flower, pass through rubber thread, constitute each waist elastomeric element 32, preferably its diameter (fiber number) particularly is preferably in below the 310dtex below 390dtex.If the diameter of each waist elastomeric element 32 surpasses above-mentioned value, wearer and be difficult to reality to the guardian that the wearer wears and experience " soft " then, " softness " on wearer's skin, is easy to generate rubber and reins in trace.In addition, when waist elastomeric element 32 being fixed in lower limb and enclosing non-woven fabrics 24A and outer non-woven fabrics 24B and go up, preferably directly with adhesive applicating on this waist elastomeric element 32.In such occasion, usually, the rubber thread of no matter throwing off easily at which type of flexible state all is difficult to throw off, and can realize above-mentioned effect really.
In addition, best, each waist elastomeric element 32 is provided with according to the mode below the average 5mm of corresponding spacing.By such formation, can guarantee with prevent Briefs type diaper 1 relative wearer misplace on one's body the tenesmus necessary radical waist elastomeric element 32 be arranged on the waist periphery 9.In addition, the elastomeric element 32 of the rubber thread of determining according to above-mentioned diameter is according to the average headway setting below the 5mm, thus, even the scope of broad (such as, with the wearer of body weight in the scope of 12kg～22kg is the size range at center) make Briefs type diaper 1 under the situation of change in size, still can make the wearer have soft, softish sense of touch.
By such setting, waist elastomeric element 32 is arranged at the sidepiece of the absorber main body 20 in the waist periphery 9, thus, and the sense next to the shin of feeling good that acquisition only causes in the fastening of predetermined position, and leak preventing effect is improved.The mechanism of this phenomenon it be unclear that, but can resemble following such supposition.
That is, the diffusion in absorber 23 easily of excretory urine, soft stool, particularly at the state of going to bed, higher to the tendency of the transfer of waist periphery 9.In this occasion, on the absorber 23 of waist periphery 9, urine, soft stool are temporarily stagnated, and then, it is absorbed in the absorber 23.But, in the low such occasion of the rigidity of absorber 23, if the rivel of sidepiece is bigger, then think form urine, soft stool can be from here towards the sidepiece of absorber 23, and then the state that outside absorber 23, moves.But, in the present embodiment,,, form thinner rivel (waist rivel 10), so think that stoping urine to wait moves towards side direction by reducing its disposition interval because the elongation load of every waist elastomeric element has characteristic as described above.
Also have, in the present embodiment since with than thin elastomer of past as waist elastomeric element 32, pay intensity so be difficult to produce the subsides of the other side's who pastes pair this elastomeric element sheet material.Thus, best, directly with adhesive applicating on elastomeric element.In this occasion, by forming thinner rivel (waist rivel 10), to compare with the occasion that forms thicker rivel, the density of the distribution of bonding agent is higher.For this reason, think that the ability that will will dye the partitions such as Excreta that come in the last propagation of the end face (the top layer thin slice (surfacing) of liquid permeability etc.) of absorber main body 20 is higher.
Have again,,, be provided with the occasion of three-dimensional rivel 26A, 26B,, leak preventing effect is improved corresponding to above-mentioned thinner rivel (waist rivel 10) at two sidepieces in the outside of absorber 23 as shown in the present embodiment.This situation can be speculated as following such mechanism.
Promptly, three-dimensional rivel 26A, 26B form the solid space (bag) that prevents to arrive the leak of liquid at absorber side edge part place with physics mode usually, but, if the elongation load of waist elastomeric element is bigger, then because of the contraction of absorber side edge part, three-dimensional rivel 26A, 26B all shrink, and have the danger of the capacity that reduces bag.Relative therewith, as present embodiment, the elongation load of every waist elastomeric element has characteristic as described above, and reduce disposition interval, reduce the contraction of the side edge part of absorber 23 thus, consequently can keep the capacity of anti-leak-off pocket, improve leakageresistance according to design load.
From making the wearer have the viewpoint of softish sense of touch, enclose non-woven fabrics 24A and outer non-woven fabrics 24B for the lower limb of waist elastic members in elongation state grips 31, its layer weight is preferably in 10～30g/m 2Scope in, particularly be preferably in 15～25g/m 2Scope in, wherein, especially be preferably in 15～20g/m 2Scope in.In addition, when enclose at lower limb among non-woven fabrics 24A and the outer non-woven fabrics 24B any one on, fixing in during waist elastic members 31, preferably adopt the hydrophobicity bonding agent.If can then, can prevent excremental dyeing flower like this because the effect of the rivel that elastomeric element produces makes the hydrophobicity bonding agent higher in partial density.
Because waist elastomeric element 32 is fixed in lower limb and encloses between non-woven fabrics 24A and the outer non-woven fabrics 24B, so can prevent waist elastomeric element 32 so-called " coming off ", can be fixed really.In addition,,, can make the wearer have soft sense of touch so do not hinder the retractility of waist periphery 9 owing to keep 2 synusia of waist elastomer 32 to constitute by non-woven fabrics with fixed form, and cost that can be lower, sheeting obtained.
In the present embodiment, in order to obtain above-mentioned effect effectively, above-mentioned corresponding waist elastomeric element 32 adopts rubber thread, and adopts than in the past thin rubber thread (specifically, its fiber number is below 390dtex, and it is following to be preferably in 310dtex).
But, so thinner elastomeric element is positioned in the following environment, in this environment, be in the manufacturing process, when diaper is sent into sheet material, contact with introduction part, bear bigger frictional force, easily fracture.For this reason, in thinner elastomeric element,, apply interfacial agent from the teeth outwards in order to reduce friction.It is believed that, this situation hinder with diaper in sheet material bonding, thereby be difficult to fix, such as, even under temporary transient fixed situation, still can't resist the more flexible amplitude of the diaper that is required the fitness of broad size, elastomeric element is peeled off from sheet material.
But the application's invention is by the physical characteristic of elastomeric element, the kind of sheet material, and the kind of bonding agent and the mode of manufacture view etc. have been broken above-mentioned general knowledge.
Specifically, can by following (1)～(4) considering aspect the material, and the manufacture view of (5) consider combinedly, cover above-mentioned general knowledge.
(1) elastomeric element adopts the increase of specific elongation rate and the lower type of the increment rate of load (according to the load of 3 times of elongation usefulness at below 2 times of load that are used for according to 2 times of elongations).
(2) 2 layers of sheet material with the method for clamping secures resilient member adopt layer weight at 10～30g/m 2Scope in type.
(3) at least 1 layer in above-mentioned 2 layers of sheet material adopts the average diameter (average fineness) of the fiber that is constituted in the type that (is preferably in below the 2.0dtex) below the 4.5dtex.
(4) bonding agent adopts the heat molten type bonding agent of styrene-butadiene-cinnamic block copolymer, styrene-isoprene-cinnamic block copolymerization system.
(5) on elastomeric element, apply its coating amount at 10～50g/m 2(be preferably in 20～40g/m in the scope 2Scope in) bonding agent, it is adhesively fixed on 2 sheet materials.
Fixedly 2 of waist elastomeric element 32 layers of non-woven fabrics (sheet material) are preferably bonding mutually.At this moment, bonding agent can be coated on lower limb and encloses among non-woven fabrics 24A and the outer non-woven fabrics 24B at least 1 layer.In addition, by with adhesive applicating on these non-woven fabrics, fixing of waist elastomeric element 32 is firmer, even carry out the wearer under the situation of motion of non-normal fierceness, elastomeric element still can not come off, in addition, and at this moment, occasion relatively in the past, (concrete coating amount is at 1～8g/m can to reduce the coating amount of bonding agent on this non-woven fabrics 2In the scope), corresponding to short spacing, thinner elastomeric element is set and the rivel (waist rivel 10) that forms, can make diaper have soft feel.
Figure 20 is the axonometric chart of an example of expression Briefs type diaper in the past.In addition, Fig. 4 (b) for and in the past Briefs type diaper in corresponding diagram 4 (a) be in the cutaway view of same position.Fig. 1 and Figure 20 compared know that the waist rivel 10 in the Briefs type diaper 1 of present embodiment is thinner than the waist rivel 510 in the Briefs type diaper 500 in the past, the former quantity is more than the latter's.In addition, when to Fig. 4 (a) and Fig. 4 (b) when comparing, the diameter of the waist elastomeric element 32,532 in the diaper 1,500 and the difference of employed radical are tangible.Because it is identical with building block the Briefs type diaper 500 in past shown in Figure 20 on function, or similarly building block all provides in Fig. 1, so for these building blocks shown in Figure 20, adopt on numerical part, to add 500 and the label that forms at the given label of building block shown in Figure 1.For Fig. 4 (b), also be same.
Provide an example of the method for the Briefs type diaper 1 of making present embodiment below.In order to make outer layer body 24, at first, on the whole surface of outer non-woven fabrics 24B, coating heat molten type bonding agent.Then, along the width of outer non-woven fabrics 24B, the elongation state according to predetermined on waist periphery 9, is provided with waist elastomeric element 32, is fixed.In addition, the elongation state according to predetermined encloses the elastomeric element 30A of portion with middle waist elastic members 31 and lower limb respectively, and 30B is provided with and is fixed on the fixed position.Then, make lower limb enclose non-woven fabrics 24A and coincide with on the outer non-woven fabrics 24B, both are engaged.Then, at the pars intermedia of width, waist elastomeric element 32 is cut off.Like this, obtain outer layer body 24.On the other hand, according to common manufacture method, make absorber main body 20.Then, engage by part, absorber main body 20 and outer layer body 24 is fixing.In addition, respectively with left and right sides edge 2A, the 2B of veutro portion 2 in the outer layer body 24 and drosal part 3; 3A, 3B engage fixing, form Briefs type, obtain the Briefs type diaper 1 of present embodiment.Engage in the operation at this, be fit to adopt the method for heated sealant, high frequency sealing, ultrasonic sealing etc.
The surfacing 21 that constitutes the Briefs type diaper 1 of present embodiment preferably adopts and makes Excreta thoroughly to the liquid permeability thin slice of absorber 23, and has the sense of touch near underwear, such liquid permeability thin slice preferably adopt such as: weave cotton cloth, non-woven fabrics, porous film etc.
In addition, the material of leakproofing material 22 is fit to adopt the high molecular non-liquid permeable layer of polyethylene, polypropylene, polyester etc.From preventing vexed wet viewpoint, preferably make these thin slices have poisture-penetrability and use.
It is main material that absorber 23 preferably adopts with minute paper pulp of comb, adopts the material of water absorbent polymer simultaneously, in addition, preferably adopts the mixture to thermoplastic resin, cellulose fibre, water absorbent polymer to carry out heat treated type.The shape of this absorber 23 is preferably rectangle, and timing hourglass shape etc. in addition, for its structure, exemplify the type that is formed by monolayer, the type of 2 layers of coincidence etc., but is not limited to this occasion.
Best, three-dimensional rivel encloses the elastomeric element 30A of portion, 30B and the elastomer of middle waist elastic members 31 for being formed by natural rubber, synthetic rubber with elastomeric element 29A, 29B, lower limb, and its form is any form in thread, fibrous, film like, the band shape.
Waist elastomeric element 32 can adopt such as, registered trade mark), " Roica " that make of Asahi Kasei Corporation (trade name: registered trade mark), " シ Le バ-Network イ-Application " (trade name: registered trade mark) etc. of making of ア サ ヒ テ Star Network Co., Ltd. " Lycra " that east レ デ ユ Port Application Co., Ltd. makes (trade name:, but, the invention is not restricted to these occasions.
Enclose non-woven fabrics 24A for lower limb, outer non-woven fabrics 24B, exemplify vapor-permeable type (エ ア one ス Le one) non-woven fabrics, hot-rolling type non-woven fabrics, spun bond nonwoven fabric, spunlaced type non-woven fabrics, melt-blown nonwoven fabric, be stacked with melt and spray with spunbond type (such as, SMS (spunbond melt and spray spunbond) non-woven fabrics, SMMS (spunbond melt and spray spunbond) non-woven fabrics etc.) etc. general type, but, the invention is not restricted to these types.Fiber for constituting non-woven fabrics has exemplified with polypropylene, polyethylene, or polyethylene-polyacrylic random copolymer is the polyolefin series fiber, polyester fiber, Fypro of the resin of main component etc. etc.For the structure of fiber, exemplify ultimate fibre, core/cladded type fiber, fiber type etc. side by side.
Enclose non-woven fabrics 24A with regard to lower limb,, preferably adopt spun bond nonwoven fabric, SMS non-woven fabrics, SMMS non-woven fabrics if consider the aspect, the particularly stability maintenance of waist elastomeric element etc. of feel (skin feel), cost, intensity.In addition, from obtaining the viewpoint of good hand feeling, preferably the diameter of its fiber (fiber number) is below 3.0dtex.
In addition, with regard to outer non-woven fabrics 24B, the viewpoint from feel (skin feel), cost, fine hair orthostatic preferably adopts the vapor-permeable type non-woven fabrics.Particularly from the good viewpoint of feel of shirred (シ ヤ one リ Application グ) carefully, the diameter of its fiber (fiber number) is preferably in below the 2.0dtex.When considering the anti-leakage of liquid, lower limb encloses non-woven fabrics 24A and outer non-woven fabrics 24B preferably adopts the type of having carried out water-proofing treatment.If lower limb encloses non-woven fabrics 24A when adopting non-woven fabrics beyond the spunbonded type, outer non-woven fabrics 24B also can use spun bond nonwoven fabric, and this is because in any one occasion that adopts spun bond nonwoven fabric, the stability maintenance of waist elastomeric element 32 further improves.
From the simplification of manufacturing process, guarantee the viewpoint of adhesive strength etc., bonding agent preferably adopts the heat molten type bonding agent, still, the invention is not restricted to this, and the present invention also can be fit to adopt vinyl acetate, stone interfacial agent resin, cold adhesive etc.
Owing to constitute the good Briefs type diaper of feel, so " whole soft property " notion that present inventor's introducing can be assessed the soft property of the non-woven fabrics that adopted.Below the method for assessing the soft property of this integral body is described.
(modulation of test film)
From goods, take out the elastomeric 2 layers of thin slice of maintenance, adopt organic solvent, with its separation.After making its bone dry, cut along the width of goods to be of a size of 30mm, the rectangle that is of a size of 150mm along its length is (with reference to Fig. 5 (a).Each test film, the formation diameter is 45mm, and is highly for the cylinder of 30mm (overlap width: be about 8mm), by the ultrasonic sealing device that top and bottom is bonding, forms test samples (with reference to Fig. 5 (b)).
(detection method)
Adopt compression test, detect the compression speed according to 10mm/ minute, the peak load that is presented when cylindrical direction (short transverse) is compressed on every side to the top of test samples obtains whole soft property.
Enclose among non-woven fabrics 24A and the outer non-woven fabrics 24B at least one for lower limb, the soft property of above-mentioned integral body of the width of its goods (Briefs type diaper) is preferably in the following mm of 0.1N/30.
Resemble so following, at the Briefs type diaper 1 (being referred to as " the 1st embodiment " below) of the 1st embodiment described above, the Briefs type diaper (being referred to as " the 1st comparative example " below) with the past carries out the hands sense of touch, wear pressure, and the assessment of various performances.
(A) assessment of hands sense of touch
The resistance of detection during as the contact of the index of the soft property of cylindrical shell periphery.
" checkout gear "
The automatic film testing machine (KESFB4-AUTO-A) that カ テ Star Network Co., Ltd. produces.
By two-sided tape, the sample of non-elongation state is fixed on the acrylic resin board, sample is faced up, be arranged on the testing stand, detect.
" testing conditions "
Detection speed (translational speed of testing stand) is 1mm/ second, and it is 0.5N that friction detects load (W).Employing according to following formula, is obtained frictional force ((F), resistance) according to detecting the average surface coefficient of friction (μ) that obtains.In addition, carry out 3 times at least and detect, with the meansigma methods of frictional force as soft property.
F＝uW
" testing result " provides in table 1.
Table 1
The kind of diaper The rigidity of absorber (mN/50mm) The waist elastomeric element Soft property (mN)
Kind and fiber number Spacing (mm) B B/A
The 1st embodiment 250 Rubber thread 310dtex 4.0 4.0 0.25 180
The 1st comparative example 250 Rubber thread 470dtex 7.5 4.1 0.53 270
As what know from table 1, the numerical value of the soft property of the Briefs type diaper 1 of present embodiment (the 1st embodiment) is less than the goods (the 1st comparative example) in past.That is, this diaper 1 presents following situation, and frictional force is less, and is softer than the goods in past.
(B) wear pressure under the elastomer
" detection method "
On the pipe (girth is 570mm) of vinyl chloride system, diaper (L size) is installed, detect the pressure of wearing of waist periphery sidepiece.The clothing pressure force detector (AMI3037-2) that checkout gear adopts the エ イ エ of Co., Ltd. system ア イ society to produce, with the value of wear pressure remove the elastomeric radical that is acted on the pick off that detection adopted and the value that obtains as the pressure of wearing under the elastomer.The detected value of the each point of waist periphery sidepiece is expressed as frequency (%) (frequency).Sample is the 1st embodiment and the 1st comparative example of table 1.
" testing result " provides in table 2.
Table 2
Frequency (%)
The 1st embodiment The 1st comparative example
Wear pressure (Pa) 0～40 0 0
40～80 3 0
80～120 23 0
120～160 60 10
160～200 15 40
200～240 0 43
240～280 0 8
280～320 0 0
Meansigma methods 130Pa 200Pa
As what understand from table 2, compare with the Briefs type diaper (the 1st comparative example) in past, under the elastomer of the Briefs type diaper 1 of present embodiment (the 1st embodiment) to wear pressure lower, i.e. the degree step-down of the concentration of local of pressure, realize the dispersion of pressure, meansigma methods also diminishes.So, on wearer's skin, do not produce rubber and rein in trace, can obtain soft softish sense of touch.
(C) various Performance Evaluations
Make respectively absorber rigidity, be arranged at the elastomeric fiber number of waist periphery, and elastomeric spacing is set changes, make sample (the 2nd～the 3rd embodiment, the the 2nd～the 4th comparative example), at these samples, to being used to make tube to enclose the load B of overall elongated 80% usefulness, outward appearance (dress ornament), the rubber thread of wearer's waist is reined in trace, tenesmus, absorbent properties and is assessed.The method of the test of corresponding each evaluation item is as described below.
(i) be used to make tube to enclose the load B of overall elongated 80% usefulness
" being used to make tube to enclose the load of overall elongated 80% usefulness " refers to be used at cyclic state, only cut out the waist periphery of Briefs type diaper, so that the length that tube encloses when extending at utmost is 100%, make the load of its elongation 80%, be under 300mm/ minute the condition, to detect in test speed by Tan Xilun (Tensilon) universal testing machine.
(ii) outward appearance (dress ornament)
Sample is worn on the model,, assesses by its outward appearance of visualization.
(iii) rubber is reined in trace
Sample is installed on the monitor of build of standard,, the rubber after 3 hours is reined in trace judge by visual.
(iv) absorbent properties
Sample is through and can injects on model's (model) of liquid from hip thigh portion,,, inject assessment liquid from hip thigh portion at horizontal state.Assessment liquid is normal saline (0.9wt%), according to the 5g/ speed of second, injects 40g at every turn.After 2 times, shelved 5 minutes, until produce leaking, will be until producing total liquid measure (g) when leaking as absorbent properties.
(v) prevent the performance that drops
Sample is through on the monitor of build of standard,, assesses the tenesmus state of the diaper after 3 hours by visual.
Compile the result of above-described each test, it is listed in the table 3.
Table 3
The kind of diaper The rigidity of absorber (mN/50mm) The waist elastomeric element Outward appearance *1 The rubber of wearer's waist is reined in trace *2 Prevent dislocation tenesmus property *3 Absorbent properties (g) *4
Kind and fiber number (fiber number: dtex) (mm) at interval B(N) Every load B/A (N)
Embodiment 2 250 Rubber thread/310 4 4.0 0.25 ○ ○ ○ 240 (○)
Embodiment 3 280 Flat rubber (flat go system) 4.5 3.8 0.22 ○ ○ ○ 240 (○)
Comparative example 2 250 Rubber thread/470 4 9.0 0.53 △ × ○ 200 (△)
Comparative example 3 250 Rubber thread/310 7.5 4.0 0.49 ○ × ○ 200 (△)
Comparative example 4 430 Rubber thread/310 4.5 3.9 0.23 × ○ × 240 (○)
*Be expressed as good surface appearance at 1: zero, △ represents the effect because of wrinkle pleat etc., and the occasion than zero is poor slightly, and * expression is poorer than the occasion of △.
*Finger did not almost have rubber to rein in trace in 2: zero, and * expression refers to produce rubber and reins in trace.
*After the finger dress in 3: zero, produce the ideal state of tenesmus hardly, * refer to that generation drops.
*4: zero ideal absorbent properties of finger, △ refers to compare with zero, and is poor slightly.
(D) enlargement in section relatively
Along the horizontal direction of stance, cut off the Briefs type diaper 1 (the 1st embodiment) of present embodiment, and the waist side surface part of Briefs type diaper (the 2nd comparative example) in the past (the flank panel region is taken the microphotograph of section, and both are compared.The Briefs type diaper 1 of Fig. 6 (a) expression present embodiment, the cross section microphotograph of Fig. 6 (b) expression Briefs type diaper in the past.The scale of each photo (ス ケ one Le) length is 5mm.
As comparison both and know, in the Briefs type diaper 1 of present embodiment, form a plurality of than the thin wrinkle pleats of Briefs type diaper in the past.Equally thus, the partial concentrated degree step-down of pressure is realized the dispersion of pressure, does not have to produce the part of higher pressure in the part of wearer's skin, does not produce the rubber thread vestige.
The 2nd embodiment of＜Briefs type diaper 1: the Briefs type diaper I that also in middle waist, is formed with thinner wrinkle pleat 〉
Fig. 7 is the axonometric chart of the 2nd embodiment of this Briefs type diaper of expression I.The basic structure of this illustrated Briefs type diaper 100 is identical with above-mentioned Briefs type diaper 1, still, and at waist periphery 9, and middle waist 7 places, adopt as the wrinkle pleat and form the thinner rubber thread of using elastomeric element, form thinner middle part of the side wrinkle pleat 108.For in building block shown in Figure 7 or the zone, adopt and the employed label of Fig. 1 identical label in building block and zone beyond the middle part of the side wrinkle pleat 108, and omission is to its description.
Specifically, middle part of the side wrinkle pleat 108 forms by following manner, and this mode is: at middle waist 7, according to the average headway below the 3mm, the many elastomeric elements (middle waist elastic members) that form usefulness separately along the wrinkle pleat that circumferentially extends are set.In addition, will be used to make the load of whole middle part of the side peristome 5 elongations 80% to be set in the scope of 3～6N, preferably be set in the scope of 4～5N.In addition, also can set the elongation load of every waist elastic members in the following manner, this mode refers to that the radical of the elastomeric element (middle waist elastic members) at middle waist is C, when being used to make the load of whole middle part of the side peristome elongation 80% to be DN, then the such relation of D/C≤0.8N is set up.
In the occasion of such formation, because the dispersion of the pressure (when wear Briefs type diaper 100, middle part of the side elastomeric element acts on the pressure of wearer's the middle part of the side) under the elastomeric element of waist 7 in making, can reduce to drain, the sense of discomfort when taking off diaper.In addition, identical with occasion at wearer's waist, also can eliminate the problem that rubber is reined in trace at wearer's place, the middle part of the side.
In addition, prevent the viewpoint of leaking performance from further raising, best, constitute in the following manner, that is, be used to make the load of whole middle part of the side peristome 5 elongations 80% greater than the load that is used to make whole waist periphery 9 elongations 80%.
Following bag constructions is more effective, and in this bag constructions, like this, by relative waist periphery 9, the elongation load of waist 7 is bigger in making, and 9 couples of wearers' of waist periphery pressing force is slowed down, and this bag is formed by the absorber sidepiece.
The method of Briefs type diaper 100 of making present embodiment is identical with the occasion of describing with regard to the Briefs type diaper 1 of the 1st embodiment basically.With predetermined elongation state, when middle waist elastic members is arranged at the assigned position of middle waist 7, carry out according to the mode that fully satisfies above-mentioned condition.
The 3rd embodiment of＜Briefs type diaper I: at the Briefs type diaper I that elastomeric element is set entirely in week 〉
Fig. 8 is the axonometric chart of the 3rd embodiment of expression Briefs type diaper I.In this illustrated Briefs type diaper 200, identical with above-mentioned Briefs type diaper 100, at middle waist 7, the wrinkle pleat forms with elastomeric element and adopts thinner rubber thread, form thinner middle part of the side wrinkle pleat 108, and, thinner waist elastomeric element is set in the full week of waist periphery 9, in the scope in full week of waist periphery 9, form thinner waist wrinkle pleat 208.Only to be arranged at the aforesaid Briefs type diaper 100 of sidepiece of waist periphery different with waist wrinkle pleat in this respect, but other composition is identical.For in building block shown in Figure 8 or the zone, adopt and the employed label of Fig. 7 identical label in building block and zone beyond the waist wrinkle pleat 208, and omission is to its description.
Provide below and make,, the example of method of the Briefs type diaper 200 of waist elastomeric element is set in the full week of waist periphery 9 as above-mentioned.In order to make outer layer body, at first, on the whole surface of outer non-woven fabrics, coating heat molten type bonding agent.Then, on the waist periphery,, in length range,, fixedly waist elastomeric element is set at elongation state along the width of outer non-woven fabrics.In addition, at the elongation state of regulation, middle waist elastic members and lower limb are enclosed portion's elastomeric element be provided with respectively and be fixed in the precalculated position.Then, lower limb is enclosed non-woven fabrics coincide with on the outer non-woven fabrics, both are engaged.
Like this, obtain outer layer body.On the other hand, according to common manufacture method, make the absorber main body.Then, engage, absorber main body and outer layer body are fixed by part.In addition, two lateral margins about veutro portion in the outer layer body and drosal part are engaged fix respectively, form Briefs type, obtain the Briefs type diaper 200 of present embodiment.
Like this, can the waist elastomeric element be set by in the scope in full week of waist periphery 9, the wearer experienced soft at absorber part and the sidepiece part of absorber between be successive, the discomfort of being felt when reducing to wear diaper.In addition, can prevent in absorber, produce bigger fold because when wear, make the close third side of absorber sidepiece to, so can be formed with bag constructions, prevent excremental dyeing flower at sidepiece.In addition, owing to be difficult on absorber, form wrinkle pleat (fold),, that is, can guarantee the width of this absorber, even, still it can be collected for the urine of discharging with advantage so have following advantage.
In the above, corresponding at present, think rationally can to put into practice, and be preferred embodiment, Briefs type diaper I of the present invention is described, but Briefs type diaper I of the present invention is not limited to disclosed embodiment in this explanation, it must be interpreted as and not break away from the essence of an invention that accessory rights claim and whole description read, or in the scope of design, suitably change, follow the Briefs type diaper of such change, or be contained in the interior diaper of scope of technology of the present invention.
According to Briefs type diaper I of the present invention, because the load that is used to make whole waist periphery elongation 80% is difficult to produce the dislocation when wearing in the scope of 2～8N.In addition, owing to load B remove to constitute value B/A that the radical A of the elastomeric element of waist periphery obtains below 0.4N, so the pressure (linear pressure) under the part that can the elastomeric element broad ways is cross-section is suppressed at than low degree.That is, because the elongation load of every elastomeric element is set in below the predetermined value,, and can make the wearer have better wearing feeling so the rubber that can suppress on wearer's the waist is reined in trace.
In addition, if the rigidity of absorber below 350mN/50mm, then it is soft, thus, absorber do not produce necessary degree above than macrofold, like this, do not make the wearer have sense of discomfort, also have, can improve aesthetic appearance (dress ornament).In addition, can avoid the neglectful motion because of the wearer, absorber produces the situation of bigger fold.
The embodiment of＜Briefs type diaper II 〉
Fig. 9 is the axonometric chart of the embodiment of expression Briefs type diaper II, and Figure 10 is for from watching the vertical view of the elongation state of the state before the assembling Briefs type diaper shown in Figure 9 with wearer's contact skin one side.In addition, Figure 11 is the cutaway view along the XI-XI line of Figure 10, and Figure 12 is the cutaway view of the XII-XII line of Figure 10.
These Briefs type diapers 300 shown in the drawings (baby with) resemble through Fig. 1, Fig. 2, Fig. 3, the contrast of Fig. 4 (a) and know like that, look to have the composition identical with aforesaid Briefs type diaper 1.
In this Briefs type diaper 300 and Briefs type diaper 1, the physical characteristic of waist elastomeric element, the elasticity of waist periphery, and the various aspects of the flexural rigidity of absorber have than big difference.
For Fig. 9～building block shown in Figure 12, or remove building block and zone beyond waist elastomeric element, waist periphery and the absorber in the zone respectively, employing and the identical label of the employed label of Fig. 1, Fig. 2, Fig. 3 or Fig. 4 (a), it illustrates omission.The waist elastomeric element adopts new label 332, and the waist periphery adopts new label 309, and absorber adopts new label 323.In addition, in Figure 10, for convenience, the diagram of standing gather 26A, 26B is omitted.
Corresponding waist elastomeric element 332 in this Briefs type diaper 300 be arranged at according to the average headway below the 5mm on the waist periphery 309 aspect, identical with aforesaid Briefs type diaper 1, but, stress during 2 times of waist elastomeric element 332 elongations accordingly is below 20gf (19.6cN), below the stress of the stress during 3 times of elongations when 2 times of elongations.
The physical characteristic of waist elastomeric element 332 is selected with being provided with like this, thus, even the size that makes Briefs type diaper 300 the scope of broad (with such as, the wearer of body weight in the scope of 12kg～22kg is the size range at center) under the situation about changing, still can be the wearer and provide soft, and softish sense of touch.
In addition, by such configuration, waist elastomeric element 332 is arranged at the sidepiece of the absorber main body 20 of waist periphery 309, thus, obtain the only sense next to the shin of feeling good of the fastening generation of predetermined position, and since identical with aforesaid Briefs type diaper 1, also make to prevent that leakage effect from improving.
In addition, in the Briefs type diaper 300 of present embodiment, stress during 2 times of each waist elastomeric element 332 elongations is as above-mentioned, below 20gf (19.6cN), still, if surpass this scope, wearer and be difficult to reality to the guardian that the wearer wears and experience " soft " then, " softness " on wearer's skin, is easy to generate rubber and reins in trace.Also consider dislocation, leakage when wearing, the stress during 2 times of waist elastomeric element 332 elongations is preferably in the scope of 10gf (9.8cN)～20gf (19.6cN), particularly is preferably in the scope of 10gf (9.8cN)～18gf (17.64cN).Percentage elongation when here, 2 of waist elastomeric element 332 times of elongations are equivalent to wear diaper on the newborn child of the size of standard.
In addition, stress 2 times below of stress when 2 times of elongations during identical 3 times of elongations, but as above-mentioned, percentage elongation when on 2 times of elongations are equivalent to newborn child in the size of standard, wearing diaper, and 3 times of elongations necessary elongation state of minimum when being equivalent to wear when the wearer takes off diaper with it.The reason of doing like this is: if 2 times of the stress when surpassing 2 times of elongations are difficult to expansion, thus be difficult to wear, and be difficult to take off.Specifically, the preferred stress during these 3 times elongations particularly is preferably in below the 30gf (29.4cN) below 35gf (34.3cN).
In the above description, such as, " 2 times of elongations " refers to be elongated to the length of 2A when representing primary length by A.
In addition, the stress when obtaining the corresponding elongation of the waist elastomeric element that diaper adopts from the diaper goods, takes out waist elastomeric element 332.In occasion,, remove bonding agent fully by the organic solvent of chloroform etc. by adhesive securement.In addition, for these waist elastomeric elements 332, be under 300mm/ minute the condition, to detect the S-S curve by Tan Xilun (Tensilon) universal testing machine, the stress when detecting each elongation in test speed.
In addition, each waist elastomeric element 332 is provided with according to the mode below the corresponding average headway 5mm.Therefore, can guarantee and to prevent Briefs type diaper 300 relative wearers that the waist elastomeric element 332 of the necessary radical of dislocation tenesmus is arranged on the waist periphery 309.In addition,, that is, be fixed in lower limb and enclose between non-woven fabrics 24A and the outer non-woven fabrics 24B,, realize fixing really so can prevent waist elastomeric element 332 so-called " coming off " because waist elastomeric element 332 is fixed in 2 layers of thin slice.
Briefs type diaper 300 for present embodiment, from be fit to stress be close on wearer's the waist, do not produce tenesmus, in addition, from preventing with the degree more than the essential value with the fastening viewpoint of wearer's waist, stress during the elongation 80% of the whole waist periphery 309 of waist elastomeric element 332 is preferably in 400～800gf and (in 3.92～7.84N) the scope, particularly is preferably in 500～700gf (in 4.90～6.86N) the scope.In addition, " extending 80% o'clock stress " can identical method detect by the method described in the explanation of Briefs type diaper 1.
In the present embodiment, adopt 2 layers of non-woven fabrics, that is, lower limb encloses non-woven fabrics 24A and outer non-woven fabrics 24B, and waist elastomeric element 332 is fixing.Because like this, the fixing 2 layers of thin slice of waist elastomeric element 332 that keep are formed by non-woven fabrics, so do not hinder the retractility of barrel 309, can make the wearer, have soft sense of touch, and can pass through cheap cost, obtain sheeting.
So, in the Briefs type diaper 300 of present embodiment, by the selected thin slice material that is fit to, and the stress when corresponding waist elastomeric element 332 is extended is set in below the predetermined value, and the stress of waist periphery 309 that will be as a whole remains in the preset range, can prevent the relative wearer of the diaper tenesmus that misplaces, and prevents to produce from now on the problem that rubber is reined in trace simultaneously, in addition, can make user experience " soft ", " softness " really.
In the present embodiment, in order to obtain above-mentioned effect effectively, above-mentioned corresponding waist elastomeric element adopts than in the past thin type (specifically, fiber number is below 390dtex, and it is following particularly to be preferably in 310dtex).In order stably to fix thin like this elastomeric element, make diaper have soft sensation, in the present embodiment, be conceived to the mode of following (1)～(5).
(1) 2 layers of sheet material with the method for clamping secures resilient member adopt layer weight at 10～30g/m 2Scope in type.
(2) at least 1 layer in above-mentioned 2 layers of sheet material adopts the average diameter (average fineness) of the fiber that is constituted in the type that (is preferably in below the 1.0dtex) below the 4.5dtex.
(3) bonding agent adopts the heat molten type bonding agent of styrene-butadiene-cinnamic block copolymer, styrene-isoprene-cinnamic block copolymerization system.
(4) on elastomeric element, apply its coating amount at 10～50g/m 2(be preferably in 20～40g/m in the scope 2Scope in) bonding agent, it is adhesively fixed on 2 layers of sheet material.
(5) on at least 1 layer in 2 layers of sheet material of method of clamping secures resilient member, adhesive-applying, its coating amount is at 1～8g/m 2Scope in.
Owing to be conceived to the mode of above-mentioned (1)～(5), so waist elastomeric element 332 fixedly is firm, even carry out the wearer under the situation of vigorous exercise of non-rule, elastomeric element does not still come off.In addition, corresponding to the wrinkle pleat that produces with the short thinner elastomeric element of spacing setting (waist wrinkle pleat 10), can make diaper have soft feel.
The Briefs type diaper 300 of present embodiment can be made according to the mode identical with aforesaid Briefs type diaper 1.
Constitute the surfacing 21 of Briefs type diaper 300, leakproofing material 22, absorber 323, standing gather elastomeric element 29A, 29B, lower limb encloses the elastomeric element 30A of portion, 30B, middle waist elastic members 31, waist elastomeric element 332, lower limb encloses non-woven fabrics 24A, outer non-woven fabrics 24B, and bonding agent can adopt respectively and the identical type of type described in the explanation of Briefs type diaper 1.But absorber 323 also can adopt the type of flexural rigidity greater than aforesaid absorber 23.
In the above, corresponding at present, think reasonable practice, and preferred embodiment is described Briefs type diaper II of the present invention, but Briefs type diaper II of the present invention is not limited to disclosed embodiment in this explanation, it must be interpreted as can be in the scope that does not break away from essence of an invention that accessory rights claim and whole description read or design, suitably change, follow the Briefs type diaper of such change, or be contained in the interior diaper of scope of technology of the present invention.
According to Briefs type diaper II of the present invention, because the stress in corresponding 2 times of whens elongation of a plurality of waist elastomeric elements is below 20gf (19.6cN), and the stress during 3 times of elongations is at below 2 times of stress of 2 times of elongations, spacing between many elastomeric elements is below 5mm, be arranged between 2 layers of thin slice, so can in the size range of broad, make wearer's waist periphery experience " soft " and " softness " really, reduce the trace of reining in of rubber in addition.In addition, prevent that Excreta from producing seepage from the tab portion of waist periphery, and Excreta does not leak out from peristome.In addition, by diaper composition material and manufacturing process are tried every possible means, even be that the waist elastomeric element does not still come off, and can stably realize above-mentioned effect under the situation flexible in the scope of broad.
The embodiment of＜Briefs type absorbent commodity 〉
Figure 13 represents the axonometric chart of an embodiment of Briefs type absorbent commodity of the present invention in a schematic way, and Figure 14 is the vertical view of the state before the assembling of watching with a side of wearer's contact skin Briefs type absorbent commodity shown in Figure 13.In addition, Figure 15 is the cutaway view along the XV-XV line of Figure 14, and Figure 16 is the cutaway view along the XVI-XVI line of Figure 14.
These Briefs type absorbent commodities 400 shown in the drawings are Briefs type diaper (being called " Briefs type diaper 400 " below), this Briefs type diaper 400 is as knowing according to the contrast of Fig. 9, Figure 10, Figure 11 and Figure 12, from in appearance, have the composition identical with aforesaid Briefs type diaper 300.
In Briefs type diaper 400 and Briefs type diaper 300, except the elasticity of waist periphery is slightly different, with method of clamping fixedly the form of application of the bonding agent on 2 layers of thin slice of waist elastomeric element also be different.
For in the building block of Figure 13～shown in Figure 16 or the zone, building block except the waist periphery and zone, the description to it is omitted in employing and the identical label of the employed label of Fig. 9, Figure 10, Figure 11 or Figure 12.The waist periphery adopts new label 409.In addition, in Figure 14, for convenience, omit standing gather 26A, the diagram of 26B.
Waist elastomeric element 332 in the illustrated Briefs type diaper 400 preferably adopts 2 times of needed loads of elongation (to convert according to gf at the 19.6cN/ root, the 20gf/ root) below, 3 times of needed loads of elongation are at 2 times of elastomers below 2 times that extend needed loads, particularly preferably adopt 2 times of needed loads of elongation below the 19.6cN/ root, 3 times of needed loads of elongation are at the following elastomer of 29.4cN/ root (converting the 30gf/ root according to gf).Specifically, can adopt the elastomer of fiber number below 390dtex, such as, registered trade mark), " Roica " that make of Asahi Kasei Corporation (trade name: registered trade mark), " シ Le バ-Network イ-Application " (trade name: registered trade mark) etc. of making of ア サ ヒ テ Star Network Co., Ltd. " Lycra " that east レ デ ユ Port Application Co., Ltd. makes (trade name:, but, the invention is not restricted to these occasions.
In addition, waist elastomeric element 332 along last crotch direction with the spacing setting below the 5mm, its radical is preferably according to making waist periphery 409 elongations 80% needed load selected in the mode of the scope of 2～8N, particularly preferably selected according to the mode of above-mentioned load in the scope of 4～7N.
Here, said in the present embodiment " extending needed load according to n times (n refers to 2 or 3) " refers to that the length in the elastomeric naturalness that is used as waist elastomeric element 332 (not having effect that tensile state is arranged) is at 1 o'clock, and this elastomeric length is the needed load of n.In addition, " make waist periphery elongation 80% " refers to according to cyclic state, only cut out waist periphery 409, the length of the horizontal cross direction of the loin when the horizontal cross direction of loin makes these waist periphery 409 elongations maximum is 100% o'clock, is elongated to 80% of this length along the horizontal cross direction of loin.
In Briefs type diaper 400, identical with the Briefs type diaper of the various embodiments described above, lower limb encloses non-woven fabrics 24A and outer non-woven fabrics 24B interfixes by bonding agent, each waist elastomeric element 332 is all can present the mode of telescopic resilience, by bonding agent, be fixed in lower limb with elongation state and enclose on non-woven fabrics 24A and the outer non-woven fabrics 24B.
From the simplification of manufacturing process, guarantee the viewpoint of adhesive strength etc., bonding agent preferably adopts the heat molten type bonding agent, still, the invention is not restricted to this, and the present invention also can be fit to adopt vinyl acetate, stone interfacial agent resin, cold adhesive etc.
In addition, the layer weight (coating amount) of bonding agent is according in Briefs type diaper 400, and relative fixed has under the zone of absorber main body 20, and mode more around the one's respective area is chosen.The layer weight that is fixed with the bonding agent under the zone of absorber main body 20 is preferably in 1～10g/m 2Scope in select, particularly be preferably in 2～8g/m 2Scope in select.In addition, above-mentioned zone about the layer weight of above-mentioned bonding agent in two outsides be preferably in 1～12g/m 2Scope in, particularly be preferably in 2～10g/m 2Scope in.
Layer weight at bonding agent has in the Briefs type diaper 400 of biasing (り partially) (distribution), even because in the wearing process of diaper, still can really waist elastomeric element 332 be fixed in the desired position, so be very effective with the combination of the method for following (1) and (2).
(1) with method of clamping fixedly 2 layers of sheet material of waist elastomeric element 332 adopt layer weight at 10～30g/m 2Scope in parts.
(2) at least 1 person in above-mentioned 2 layers of sheet material adopts the type of fiber number below 4.5dtex of the fiber that constitutes sheet material, particularly preferably adopts the type of this fiber number below 2.0dtex.
In having the Briefs type diaper 400 of above-mentioned composition, because the lower waist elastomeric element 332 of the increment rate of the shrinkage stress of the increase of specific elongation rate is according to less spacing, be arranged on the waist periphery 409, so can easily when wearing, widely middle part of the side peristome 5 be enlarged.Promptly dress property is good.
On the other hand, in wearing process, because in the distribution of the shrinkage stress that the waist elastomeric element 332 in whole waist periphery 409 produces, be difficult to produce biasing, so follow wearer's human posture or motion, abdominal circumference changes, and the percentage elongation of waist periphery 409 increases, even still suppress in this case, the situation that the shrinkage stress of waist elastomeric element 332 increases greatly in the specific region.Consequently, make the wearer have stronger fastening sense, suppress to produce the situation that rubber is reined in trace.That is, wearing feeling is good.
In addition, because in whole waist periphery 409, can obtain to be enough to prevent the shrinkage stress that drops, and resemble aforementioned the layer weight (coating amount) of selected bonding agent, even in the process of wearing, still really each waist elastomeric element 332 is fixed in the desired position easily, so can prevent abdomen easily leaks, the back of the body leaks, and prevents that easily Briefs type diaper 400 from easily dropping caducous situation.Be used for child's occasion at Briefs type diaper 400, can obtain the Briefs type diaper that is difficult to take off by child oneself easily.
Because the layer weight (coating amount) by making bonding agent is as aforementioned, even in the process of diaper dress, still really waist elastomeric element 332 is fixed in the desired position, and the feel that can suppress waist periphery 409 reduces and flexibility reduces, it is same because this aspect can make the wearing feeling of Briefs type diaper 400 improve.
In addition since with aforesaid Briefs type diaper 1, or 300 identical reasons prevent to improve from the effect that waist periphery 409 leaks.
Owing to state in the effect Briefs type diaper 400 of technology in realization, on absorber main body 20, be formed with wrinkle pleat (fold) in fact, so make the outward appearance of the easy and common medicated underpants of its outward appearance identical easily.
Also have, resemble the back will as described in, be preferably in when making Briefs type diaper 400, on the elastomer of the longer size of material that constitutes waist elastomeric element 332, apply interfacial agent.In the occasion of this interfacial agent of coating, obtain on the surface of waist elastomeric element 332, to have the Briefs type diaper 400 of interfacial agent.In addition, absorber 23 preferably adopts the type of saturated absorption amount more than 500g.
The embodiment of the manufacture method of＜Briefs type absorbent commodity 〉
Figure 17～Figure 19 represents a manufacturing process of the Briefs type absorbent commodity of present embodiment respectively in a schematic way.Below, be example with above-mentioned Briefs type diaper 400, in the label of suitably quoting Figure 13～Figure 16 and being adopted, the embodiment of this manufacture method is specifically described.
At first, as shown in Figure 17, carry out following the 1st operation, promptly, length direction with band shape the 1st sheeting 50 that constitutes outer non-woven fabrics 24B is that moving direction transports the 1st sheeting 50, on one side the zone of waist periphery 409 of formation Briefs type diaper 400 in the 1st sheeting 50, continuously along the 1st sheeting 50 vertically, by the 1st applicator 52, adhesive-applying 54.The carriage direction of the 1st sheeting 50 is represented by the arrow A among Figure 17.The kind of the bonding agent 54 that the 1st operation is adopted is as being described in the paragraph of the embodiment of Briefs type absorbent article.In addition, its coating amount is preferably in 1～10g/m 2Scope in, particularly be preferably in 2～8g/m 2Scope in select.
Parallel with the 1st operation, or before and after it, carry out the 2nd operation.In the 2nd operation, according to predetermined radical, be equipped with the elastomer of the longer size that forms waist elastomeric element 332, after interfacial agent being coated on these elastomers, as shown in Figure 17, on each elastomer of the elastomer 56 of this longer size, by the 2nd applicator 58, vertical along it, adhesive-applying (not shown) off and on.
Because the elastomer 56 of longer size that constitutes waist elastomeric element 332 is as aforementioned, for the less type of fiber number, at this state, in being directed to the process of desired position since with the friction of device, rupture easily.Therefore, think in the past that such elastomer can not be suitable for diaper.In the present embodiment, interfacial agent is coated on the elastomer 56 of longer size, prevents fracture, the elastomer 56 of above-mentioned longer size can be suitable for diaper.
Be coated on interfacial agent on the elastomer 56 of longer size can adopt such as: silicon interface activating agent, hydrocarbon system interfacial agent, mineral kingdom surface-active agent etc., its coating method can be fit to adopt such as infusion process, spraying process etc.In the present embodiment, the elastomer 56 that suitable employing in advance will longer size impregnated in the method in the interfacial agent.
Best, interfacial agent is preferably in the scope of 0.5～6 weight % according to the weight of the elastomer 56 of the relative longer size of its coating amount, and the interior mode of scope that particularly is preferably in 1～5 weight % applies.By like this, the coating interfacial agent easily in the 4th operation that will describe in the back, is interrupted (breaking into pieces) to the elastomer 56 of longer size and handles, and really waist elastomeric element 332 is fixed in desired location easily.In addition, be under the situation of aforesaid amount even be the coating amount of the bonding agent that the 1st operation is adopted, still can really waist elastomeric element 332 be fixed in desired location, can keep the feel of waist periphery 409 easily well.In addition, when forming waist elastomeric element 332, in the occasion of cutting off the elastomer 56 of longer size partly, even under the small pieces of this elastomer 56 residue in situation on the absorber main body 20, this small pieces are removed and the 1st sheeting 50, or being adhesively fixed, shrinking of the 2nd sheeting 62, owing to be in the inotropic state that does not present above-mentioned above degree, therefore, absorber main body 20 is not shunk under the effect of these small pieces.
In the 2nd operation, be coated on bonding agent on the elastomer 56 of longer size can adopt with in the identical type of the employed bonding agent of the 1st operation.Adopting 2 layers of non-woven fabrics, constituting the occasion of outer layer body 24,, particularly preferably adopting heat molten type bonding agent etc. from the viewpoint of cementability.
Because the 5th operation that this bonding agent will be described in the back is not coated on the zone under the width zone line that forms absorber main body 20, and is coated on other zone, so as aforementioned, coating off and on.The spacing that is coated with the zone of bonding agent and the zone that uncoated has bonding agent is preferably in 20～80% the scope of width of loin of Briefs type diaper 400, particularly in 30～60% scope.At this moment, the zone of adhesive-applying also can according to waist periphery 409 in absorber main body 20 about the mode that overlaps of two lateral margins be provided with.In this occasion, the width of this superposed part is below 20% of Breadth Maximum of the waist periphery 409 of absorber main body 20, and particularly below 10%, still, preferably absorbent properties do not reduce, and do not damage outward appearance.
If investigate the feel of bonding agent and waist periphery 409, be preferably in the 2nd operation, the coating amount of the bonding agent of the location of actual adhesive-applying is preferably in 10～50g/m 2Scope in chosen.
In addition, in formation, on the elastomer 60 of waist elastic members 31,, apply the heat molten type bonding agent by not shown applying mechanism.Arrow B among the figure is represented the carriage direction of elastomer 56,60.
To after carrying out above-mentioned the 1st operation and the 2nd operation, through the elastomer 56 of the longer size of above-mentioned the 2nd operation as shown in Figure 17, carry out following the 3rd operation, promptly, be fixed in the 1st sheeting 50 with method of clamping, and form lower limb and enclose between band shape the 2nd sheeting 62 of non-woven fabrics 24A, the arrow C among the figure is represented the carriage direction of the 2nd sheeting 62.
In illustrated example, between 1 pair roller 64, by the 1st sheeting 50, form the elastomer 56 of the longer size of waist elastomeric element 332, the elastomer 60 of waist elastic members 31 and the 2nd sheeting 62 in the formation, with method of clamping elastomer 56,60 is fixed between the 1st sheeting 50 and the 2nd sheeting 62.
At this moment, the elastomer 56 of each longer size is preferably under the interior percentage elongation of 100～500% scopes fixing.In the present embodiment, fix according to 250% percentage elongation.In addition, said here " percentage elongation " refer to represented elastomeric natural length by L, during length when being represented to extend by L1, by the value of [(L1-L)/L] * 100% expression.
Equally, each elastomer 60 of waist elastic members 31 is preferably in 50～200% interior following the fixing of percentage elongation of scope in the formation.In the present embodiment, its percentage elongation according to 100% is fixed.
In the laminated body that the 3rd operation obtains, on the elastomer 56 of longer size, adhesive-applying then, produces distribution in the coating amount of bonding agent off and on respectively.That is, in the 5th operation that will describe in the back, be fixed with under the zone of absorber main body 20, because on the elastomer 56 of longer size, the uncoated bonding agent is so the coating amount of its bonding agent is less than this zone coating amount on every side.
On the 2nd sheeting 62, but both adhesive-applyings, also adhesive-applying not.In the occasion of adhesive-applying, also can on the whole surface of the 2nd sheeting 62, apply this bonding agent, in the occasion that is Briefs type diaper 400, also can be only at the zone of the left and right sides that is positioned at absorber main body 20, adhesive-applying.With the occasion of adhesive applicating in the 2nd sheeting 62, preferably according to be coated on the 1st sheeting 50 on the identical coating amount of bonding agent on the whole surface of thin slice, with at 1～10g/m 2Scope in mode, select this coating amount, so that do not damage the feel of waist periphery 409.
Since no matter whether with adhesive applicating on the 2nd sheeting 62, on the 1st sheeting 50, on the whole zone of the lower crotch 4 in being equivalent to Briefs type diaper 400, middle waist 7 and waist periphery 409, adhesive-applying 54 is so be adhesively fixed the almost whole surface of the 1st sheeting 50 and the 2nd sheeting 62.Because between these 2 layers of sheet materials, do not produce the gap in fact, so can obtain not have in fact the outer layer body 24 of the sense of touch of slight fluctuation.
Also have, elastomer 56,60 is fixed in operation on the 1st sheeting 50, and these elastomers 56,60 are fixed in operation between the 1st sheeting 50 and the 2nd sheeting 62 as shown in the figure with method of clamping, and in fact side by side carry out, also carry out discriminably.
Though omitted diagram in Figure 17, the elastomer that the lower limb of formation Briefs type diaper 400 encloses the elastomeric element 30A of portion, 30B passes between 1 pair roller 64 all in the 3rd operation, is fixed between the 1st sheeting 50 and the 2nd sheeting 62.
After above-mentioned the 3rd operation, carry out following the 4th operation, promptly, the zone that on the elastomer 56 of corresponding longer size, does not have adhesive-applying, as shown in Figure 180, from the outside of the 1st sheeting 50 or the 2nd sheeting 62, push a plurality of overshooting shape parts 66, intermittent processing is carried out in this zone.
In illustrated example, the 1st sheeting 50 and the 2nd sheeting 62 that the 3rd operation is interfixed, pass by be staggered the 1st roller 68A that is provided with a plurality of overshooting shape parts 66 at predetermined position, and between 1 roller 68 that the 2nd roller 68B with common shape constitutes, push a plurality of overshooting shape parts 66 from the outside of the 2nd sheeting 62, intermittent processing is carried out in above-mentioned zone.
In Figure 18, in the elastomer 56 of corresponding longer size, represent above-mentioned zone by a dotted line through intermittent processing, represent other zone by solid line.In addition, the elastomer 60 of waist elastic members 31 is represented by solid line in the formation.Arrow D among the figure is illustrated in the 1st sheeting 50 that the 3rd operation interfixes and the carriage direction of the 2nd sheeting 62.
In the present embodiment, each overshooting shape parts 66 is heated, can pass through less pressing force, the elastomer 56 of each longer size that will be provided with at elongation state cuts off.If like this, above-mentioned zone is carried out intermittent processing, because the above pressing force of the necessary degree of inhibition acts on the situation on the 1st sheeting 50 and the 2nd sheeting 62, ftractures with the degree more than the essential value so prevent the opposition side of the face that overshooting shape parts 62 are pushed.Consequently, owing to prevent the generation of so-called " stupefied (バ リ) ",, make the wearer have unhappy sense of touch so be suppressed at as the occasion of diaper components damage with other.In the occasion that overshooting shape parts 66 are heated, the temperature of these overshooting shape parts 66 is preferably in 30～200 ℃ the scope, particularly is preferably in 50～120 ℃ the scope.
The linear pressure that applies by overshooting shape parts 66 is preferably in the scope of 1N/mm～1MN/mm, particularly is preferably in the scope of 50N/mm～10kN/mm.If this linear pressure is more than 50N/mm, the cut-out stabilizer pole of the elastomer 56 of longer size then, if above-mentioned linear pressure is below 10kN/mm, then because the 1st sheeting 50, or the intensity reduction of the 2nd sheeting 62, the fracture that the boundary portion place between pressurization part and non-pressurised portion produces is suppressed significantly.
Then, carry out following the 5th operation, that is, at the 1st sheeting 50, or on the 2nd sheeting 62, fixedly the absorber main body 20.In this illustrated example, the 2nd sheeting 62 constitutes lower limb and encloses non-woven fabrics 24A, and absorber main body 20 is fixed on the 2nd sheeting 62.
Such as, as shown in Figure 19, transport the laminated body 70 that obtains in the 4th above-mentioned operation along the direction shown in the arrow E among this figure, by 1 couple the 1st roller 72 that is provided with, carry out the fixing of absorber main body 20 on the way.
Absorber main body 20 is supplied with the 1st sickle 76 as a plurality of continuous ribbons 74, and here, per successively 1 each and every one ground separates.Then, corresponding isolating absorber main body 20 is supplied with one of them the roller 72A in the 1st roller 72 successively.Arrow F among the figure represents the carriage direction of ribbon 74.
The absorber main body 20 that roller 72A attraction has been supplied with changes its direction along predetermined direction, and then, between this roller 72A and another roller 72B, by laminated piece 70, clamping absorber main body 20 is fixed in this absorber main body 20 on the laminated piece 70.
Like this, fixedly after the absorber main body 20, such as, resemble as described in Figure 19 institute while, be used to form lower limb and enclose the peristome 78 of peristome 6A, 6B by 80 formation of the 2nd roller, then, by the 2nd sickle 82, cut out successively and 1 Briefs type diaper 400 corresponding regional 84.
By predetermined position with each zone 84, promptly, the position that is equivalent to two sidepiece 2A, the 2B (with reference to Figure 14) of the veutro portion 2 in the Briefs type diaper 400 engages with the position of both sides 3A, the 3B (with reference to Figure 14) that are equivalent to drosal part 3, obtains above-mentioned Briefs type diaper 400.
In addition, in above-mentioned Briefs type diaper 400, also can whole waist elastomeric elements 332 be set, also the waist elastomeric element 332 such as a part can be arranged at middle part of the side peristome 5 one sides of absorber main body 20 according to the above embodiments.In this occasion, the waist elastomeric element 332 that is arranged at middle part of the side peristome 5 one sides in the absorber main body 20 both can be subjected to intermittent processing in the part, also can not carry out intermittent processing, and kept continuously.
In addition, waist elastomeric element 332 only is arranged at the outside of the side edge part of absorber main body 20, but it also can be in the scope that does not break away from essence of the present invention, design, and the mode that overlaps with the sidepiece of absorber main body 20 according to a part is provided with.
Standing gather is not limited to 1 pair, also can be 2 pairs, in the occasion according to 2 pairs of settings, can make 1 couple wherein only be positioned at lower crotch 4 places.
The description of the embodiment of Briefs type absorbent commodity of the present invention is to be that example carries out with the Briefs type diaper, but Briefs type absorbent commodity of the present invention is not limited to the Briefs type diaper, and it also can be other Briefs type absorbent commodity, such as, the Briefs type hygienic article.The above embodiments also can be suitable for the Briefs type hygienic article.
In addition, for the person of ordinary skill of the art, obviously can carry out various changes, improvement, combination etc.
Below by exemplifying embodiment, Briefs type absorbent commodity of the present invention is further specifically described.
＜the 4 embodiment～the 6th embodiment 〉
Embodiment according to the manufacture method of above-mentioned Briefs type absorbent commodity of the present invention, make following 3 kinds of Briefs type diapers, it has the elastic characteristic except the waist elastomeric element, or beyond the elastic characteristic difference of waist periphery, other aspect has identical formation, the width of middle waist is 40mm, and the width of the last crotch direction of waist periphery is 80mm.
At this moment, the 1st sheeting employing layer weight is 20g/m 2Spun bond nonwoven fabric, it is 25g/m that the 2nd sheeting adopts layer weight 2The vapor-permeable type non-woven fabrics, bonding agent adopts the heat molten type bonding agent, the elastomeric interfacial agent that is coated on the longer size that forms the waist elastomeric element adopts the silicon interface activating agent.In addition, the spacing between the waist elastomeric element of adjacency is 4mm.
In table 4, provide the elastic characteristic and the spacing of the waist elastomeric element in the Briefs type diaper of making by each embodiment, the elastic characteristic of waist periphery, interfacial agent coating amount during manufacturing and the adhesive applicating amount when making provide the assessment result of the outward appearance of each Briefs type diaper in the table 5.
＜the 5 comparative example～the 13rd comparative example 〉
Elastic characteristic except the waist elastomeric element, the spacing of waist elastomeric element, the elastic characteristic of waist periphery, at least 1 in the coating amount of interfacial agent and the adhesive applicating amount beyond the respective range of Briefs type absorbent commodity of the present invention, other Briefs type diapers with composition identical with the Briefs type diaper of the 4th embodiment～the 6th embodiment are according to making with the mode that the 4th embodiment～the 6th embodiment is identical.
Provide the elastic characteristic of the elastic characteristic of the waist elastomeric element in the Briefs type diaper that obtains by these comparative examples and spacing, waist periphery simultaneously at table 4, the coating amount of the interfacial agent during manufacturing and the adhesive applicating amount when making provide the assessment result of the outward appearance of each Briefs type diaper simultaneously in table 5.
Table 4
The kind of diaper The waist elastomeric element Make the waist periphery extend 80% desired load The coating amount of bonding agent
Extend needed load (mm) at interval The coating amount of interfacial agent (weight %) Non-woven fabrics (g/m 2) Elastomer (g/m 2)
During 2 times of elongations During 3 times of elongations
Embodiment
4 14.7cN 24.5cN 4 4 4N 7 30
Embodiment 5 14.7cN 24.5cN 4 4 3N 7 30
Embodiment 6 14.7cN 29.4cN 4 4 4N 7 30
Comparative example 5 24.5cN 44.1cN 7.5 0 4N 7 30
Comparative example 6 24.5cN 44.1cN 7.5 0 4N 0 30
Comparative example 7 24.5cN 44.1cN 7.5 0 4N 7 0
Comparative example 8 24.5cN 44.1cN 7.5 0 4N 15 30
Comparative example 9 24.5cN 44.1cN 7.5 0 3N 7 60
Comparative example 10 14.7cN 24.5cN 4 4 4N 0 30
Comparative example 11 14.7cN 24.5cN 4 4 4N 7 0
Comparative example 12 14.7cN 24.5cN 4 4 4N 15 30
Comparative example 13 14.7cN 24.5cN 4 4 3N 15 60
Table 5
The kind of diaper Outward appearance The feel of goods (softens of goods)
Contraction on the absorber The outward appearance of whole goods The stationary state of waist elastomeric element
Embodiment 4 Zero (absorber is smooth) Zero (well) Zero (well) Zero (well)
Embodiment 5 Zero (absorber is smooth) Zero (well) Zero (well) Zero (well)
Embodiment 6 Zero (absorber is smooth) Zero (well) Zero (well) Zero (well)
Comparative example 5 * (shrink, aesthetic property is poor) △ (on absorber, producing fold) Zero (well) Zero (well)
Comparative example 6 Zero (absorber is smooth) * (outer layer body expands, and aesthetic property is poor) * (having mobile) * (outer layer body bonding bad)
Comparative example 7 Zero (absorber is smooth) Not * (not forming waist wrinkle pleat) * (having mobile) Zero (well)
Comparative example 8 * (shrink, aesthetic property is poor) △ (on absorber, producing fold) Zero (well) * (feel is harder)
Comparative example 9 * (shrink, aesthetic property is poor) △ (on absorber, producing fold) Zero (well) * (outer layer body bonding bad)
Comparative example 10 Zero (absorber is smooth) * (outer layer body expands, and aesthetic property is poor) * (having mobile) * (outer layer body bonding bad)
Comparative example 11 Zero (absorber is smooth) Not * (not forming waist wrinkle pleat) * (having mobile) Zero (well)
Comparative example 12 * (shrink, aesthetic property is poor) △ (on absorber, producing fold) Zero (well) * (feel is harder)
Comparative example 13 * (shrink, aesthetic property is poor) △ (on absorber, producing fold) Zero (well) * (feel is harder, and retractility is also relatively poor)
As shown in the table 5, in the Briefs type diaper of the 4th embodiment～the 6th embodiment, on the absorber main body, in fact form wrinkle pleat (fold), present good surface appearance.Think that in addition in this diaper, the waist elastomeric element is fixed in the desired position really, does not produce tenesmus.
Relative therewith, in each Briefs type diaper of the elasticity of waist elastomeric element and 5th comparative example～9th comparative example of spacing outside the limited range of Briefs type absorbent commodity of the present invention, coating amount corresponding to bonding agent, the absorber main body is shunk, outward appearance is bad, or the waist elastomeric element is not fixed in the desired position, thus, and dislocation tenesmus easily.
In addition, the Briefs type diaper of the 10th comparative example that 2 layers (non-woven fabrics) that constitute outer layer body do not interfix by bonding agent, and the outward appearance of each Briefs type diaper of 11st comparative example～13rd comparative example of the coating amount of bonding agent outside the limited range of Briefs type absorbent commodity of the present invention is bad.
More than corresponding to think the most reasonable the practice at present circumstances, and preferred embodiment, Briefs type absorbent commodity of the present invention and manufacture method thereof are described, but Briefs type absorbent commodity of the present invention and manufacture method thereof are not limited to disclosed embodiment in this explanation, it must be interpreted as can do not break away from accessory rights claim and whole description getable invention essence or the design scope in, suitably change, follow the Briefs type diaper of such change and manufacture method also to be contained in the scope of technology of the present invention.
According to the present invention, following Briefs type absorbent commodity is provided, it makes outward appearance identical with common underwear outward appearance easily, and dress property, wearing feeling and prevent that leaking performance is good, does not still drop under the situation of exercises even carry out the wearer.So, provide following such Briefs type absorbent commodity easily:,,, have good dress ornament and practicality for adult, women in order to help its exercise to common underwear conversion for the child.
Also have, according to manufacture method of the present invention, owing to can make the sidepiece of waist periphery have wrinkle pleat with trickle and soft sense of touch, can be under the situation of the feel of not damaging the Briefs type absorbent commodity, easily and firmly the waist elastomeric element is fixed on the sheet material, this waist elastomeric element can obtain not produce the fastening sense that is fit to that rubber is reined in trace on wearer's skin, so provide following Briefs type absorbent commodity: its dress property, wearing feeling, and prevent that leaking performance is good, even carry out the wearer under the situation of exercises, tenesmus does not still misplace.

Claims (6)

1. Briefs type diaper, this Briefs type diaper comprises the surfacing of liquid permeability, the leakproofing material of non-liquid permeability, and the absorber between this surfacing and leakproofing material is characterized in that:
At the above-mentioned absorber of the waist periphery of the waist that is arranged in wearer sidepiece longitudinally, have at least 2 layers of thin slice, and have the flank panel region that does not have absorber;
With regard to above-mentioned waist periphery, at least in above-mentioned flank panel region, many elastomeric elements are arranged between above-mentioned 2 layers of thin slice according to the average headway below the 5mm;
The flexural rigidity of above-mentioned absorber is used to make the load of whole above-mentioned waist periphery elongation 80% in the scope of 2～8N below 350mN/50mm;
When the radical of the elastomeric element that is arranged at above-mentioned flank panel region is A, when being used to make the load of whole above-mentioned waist periphery elongation 80% to be BN, then satisfy B/A≤0.4N.
2. Briefs type diaper according to claim 1 is characterized in that: above-mentioned 2 layers of thin slice are to be arranged at the non-woven fabrics that more leaves above-mentioned wearer's a side than above-mentioned leakproofing material;
The layer weight of above-mentioned non-woven fabrics is at 10～30g/m 2Scope in, the fiber number of the fiber of formation non-woven fabrics is in the scope of 1～4dtex, and below 0.1N/30mm, above-mentioned elastomeric element and above-mentioned 2 layers of thin slice are by being arranged at the hydrophobicity adhesive securement of one deck thin slice one side at least along the width of goods for the whole soft property of one of them layer.
3. Briefs type diaper according to claim 1 and 2 is characterized in that: above-mentioned elastomeric element is a rubber thread, and its thickness is below 390dtex.
4. Briefs type diaper according to claim 3 is characterized in that: on above-mentioned elastomeric element, and direct adhesive-applying.
5. Briefs type diaper according to claim 1 is characterized in that: on middle waist, according to the average headway below the 3mm, many elastomeric elements that form usefulness respectively along the wrinkle pleat that circumferentially extends are set;
Be used to make the load of whole middle part of the side peristome elongation 80% in the scope of 3～6N;
The radical of the elastomeric element in above-mentioned in the waist is C, when being used to make the load of whole middle part of the side peristome elongation 80% to be DN, then satisfies D/C≤80N.
6. Briefs type diaper according to claim 5 is characterized in that: be used to make the load of whole above-mentioned middle part of the side peristome elongation 80%, greater than the load that is used to make above-mentioned whole waist periphery elongation 80%.
CNB031370535A 2002-05-31 2003-06-02 Briefs type diaper and briefs type absorbent article Expired - Fee Related CN1301091C (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2002160679 2002-05-31
JP2002160679A JP2004000344A (en) 2002-05-31 2002-05-31 Shorts-type diaper
JP2002244313 2002-08-23
JP2002244399 2002-08-23
JP2002244313A JP4037216B2 (en) 2002-08-23 2002-08-23 Pants-type diapers
JP2002244399 2002-08-23
JP2003121666 2003-04-25
JP2003121666A JP4139264B2 (en) 2002-08-23 2003-04-25 Pants-type absorbent article and manufacturing method thereof

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CN1301091C true CN1301091C (en) 2007-02-21

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