WO2016121984A1 - Absorbent article having elastic regions - Google Patents

Absorbent article having elastic regions

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Publication number
WO2016121984A1
WO2016121984A1 PCT/JP2016/052814 JP2016052814W WO2016121984A1 WO 2016121984 A1 WO2016121984 A1 WO 2016121984A1 JP 2016052814 W JP2016052814 W JP 2016052814W WO 2016121984 A1 WO2016121984 A1 WO 2016121984A1
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WO
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Application
Patent type
Prior art keywords
sheet
direction
layer
region
elastic
Prior art date
Application number
PCT/JP2016/052814
Other languages
French (fr)
Japanese (ja)
Inventor
藤田 雅也
Original Assignee
大王製紙株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

Abstract

Provided is an absorbent article having elastic regions wherein the stretching stress differs according to the location within the elastic regions. An absorbent article having an elastic sheet (1), wherein the elastic sheet (1) has an elastic film (30), which is capable of stretching in at least the longitudinal direction, laminated between a first sheet layer (21) and a second sheet layer (22) that do not stretch, and the first sheet layer (21) and the second sheet layer (22) are joined directly or with the elastic film (30) therebetween via a number of joints (40) which are spaced at intervals; the elastic sheet (1) contracts due to the contractile force of the elastic film (30), and can be stretched by applying an external force in the longitudinal direction; and the stretching stress in the longitudinal direction differs between the middle region and side regions in the width direction of the elastic sheet (1) as a result of differences in joint area ratios, which represent the total area occupied by the joints (40) contained in a unit area.

Description

Absorbent article having a stretchable region

The present invention is an absorbent article having a stretchable region where the first sheet layer and second sheet layer is provided with a stretchable sheet formed by interposing an elastic film, typically a disposable diaper.

The absorbent article, in the example disposable diapers, to improve fit of the body surface, it is common for imparting elasticity to place such around leg and torso. As a method for imparting stretchability, conventionally, a technique for fixing in a state in which the elongated elastic member in thread rubber or the like and extending longitudinally is widely employed, if you want to grant stretchy certain width , the manner of fixing in a state arranged side by side at intervals rubber thread in the width direction is employed.

On the other hand, instead of the plurality of rubber threads arranged in parallel, with applying a pressing and stretch Menjo, as considering the skin, it has been also proposed to use a nonwoven / elastomeric film / nonwoven. (For example, see Patent Document 1).

However, in Patent Document 1, between the first outer layer and second outer layer, than this supplies an elastic film melting point to stretch to a high or continuous MD direction having no melting point, the first outer layer at a predetermined position When coupled by welding the second outer layer directly, then, by applying a force pulling in the CD direction, the first outer layer to the binding site, and forms an elastic film and a second through hole penetrating through the entire outer layer is there.

Stretch sheet according to Patent Document 1, since it is intended continuous production, the pattern of the ridges in the heat-bonding rollers forming a coupling portion is uniform in the width direction and the circumferential direction, therefore, the stretch sheet produced is , even with different widthwise position, stretch stress is uniform.
Thus, the stretch sheet is hard to say that its versatile.

Patent No. 4562391 Publication

Therefore a main object of the present invention, stretching stress by position in the region of the expansion region is to provide an absorbent article having a stretchable region that differ.

The present invention which has solved the above problems is as follows.

(Basic form)
The absorbent article of the present invention is provided with a stretchable elastic sheet in the longitudinal direction.
In the stretch sheet, a first sheet layer consisting of no example nonwoven stretch, between the second sheet layer consisting of not having stretchability example nonwoven, stretchable elastic film on the front-rear direction are laminated and, and, the first sheet layer and the second sheet layer, directly or via an elastic film, are joined in a number of joints spaced.
The stretchable sheet is contracted by the contraction force of the elastic film can be extended upon application of external force to the front-rear direction.
In the region of the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction of the stretchable sheet, the width direction longitudinal stretching stress between themselves are different.

Not limited to the arrangement pattern of the bonding portion in the present invention. One example is a staggered arrangement illustrates a preferred appearance.

Disposable diapers, in particular a tape type disposable diaper, the waist taped, members generally to fit the entire front body and back body is not provided.
That is, in order not to better follow the movement of the hip, when or crouch when gets up the wearer, mainly around the diaper floats from body surface (away), or may deviate in the longitudinal direction, as a result , cause of so-called before and after leakage.
However, the absorbent article according to the present invention, for example, in the tape type disposable diaper is stretchable in at least the longitudinal direction, since it is those with stretch sheet having a stretchable region in at least the width direction intermediate region, the wearer rise time or crouch when, when the body pressure by the wearer acts to move back and forth direction of the intermediate region, the intermediate region of the tape type disposable diaper is expanded and contracted in the longitudinal direction, longitudinal floats from body surface (away) , or can be prevented from being displaced in the longitudinal direction with respect to the wearer, it is possible to suppress the longitudinal leakage. Furthermore, particularly when the stretch sheet constitutes an outer sheet, since a stretchable region in the width direction intermediate region, the wrinkles or irregularities are formed by the longitudinal direction of shrinkage, when the diaper wearer get out supine state, since the exhibit non-slip function, it provides the advantage of preventing the longitudinal direction of the deviation.

Another aspect of the absorbent article of the present invention, in the region of the stretchable region, the junction area fraction of an total area of ​​the joint portions included in the unit area, intermediate area and both sides in the width direction of stretch sheet Unlike in the region, and the by differ also in the intermediate region, between the width direction each other, is an absorbent article which stretch stress in the longitudinal direction is different.

Another aspect of the absorbent article of the present invention is stretchable at least in the longitudinal direction, the first stretch region in the front-rear direction intermediate region of the width direction intermediate regions, the second stretching before and after the front-rear direction intermediate region an absorbent article comprising an elastic sheet having an area,
The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
By joint area ratio total area of ​​the joint portions included in the unit area occupied, differs between front and rear direction intermediate region and both side regions in the width direction intermediate regions of the stretchable sheet, the front-rear direction between the width direction mutually stretching stress is difference, and, by that differ the longitudinal direction intermediate regions and its front and rear area, an absorbent article configurations stretching stress in the longitudinal direction is different.

Furthermore different embodiments of the absorbent article of the present invention is stretchable in the longitudinal direction and the width direction, An absorbent article comprising an elastic sheet having a stretchable region in the width direction intermediate region of the at least stretchable sheet,
The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
Joint area ratio occupied by total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, unlike the longitudinal stretching stress across the width direction mutually a absorbent article configurations are.

It expansion and contraction of the expansion region is not the longitudinal direction only, it is also stretchable in the width direction, especially in the case of a diaper, which contributes to increasing the fit around or waist waist.
Incidentally, in this case, stretching stress in the longitudinal direction is preferably greater than the stretch stress in the width direction.

The stretch sheet of the present invention, holes penetrating in the first sheet layer and second sheet layer is not formed. This point is different from the stretch sheet shown in FIG. 5 or FIG. 7 of Japanese Patent No. 4562391.

In the junction of the stretchable region of the present invention, for example, the following bonding embodiment.
(1) a form in which the first sheet layer and second sheet layer were partially melted, bonding the elastic film, i.e. the first sheet layer and second sheet layer are bonded via the elastic film.
(2) elastic films melts and moves to the first sheet layer and second sheet layer, forms the first sheet layer and second sheet layer without interposing an elastic film, to be joined directly.
An intermediate form of the form of (3) and the form of (1) (2), the two surface portions of the elastic film shifts to the first sheet layer and second sheet layer are melted, however, the elastic film by being partially remaining, form the first sheet layer and second sheet layer is bonded via a residual elastic film.

Among these forms, in particular, (2) in the form of a form and (3) of the difference of the elastic film strength occurs at the junction and the non-joined portion. Accordingly, the extended state of the stretchable sheet holding the extension, once opened to contract after the product; or, the stretch sheet holding extension after binding with other members, a tension temporarily opened to shrink by then and products; when the elongated stretch direction mechanically or manually, fracture occurs at the boundary between the joint portion and the non-joined portion.
As a result, the through holes are formed.

In such a case, a stretchable at least in the longitudinal direction, a absorbent article having a stretch sheet having stretchability region at least in the width direction intermediate region, in the stretchable region, the stretch sheet may have a stretch a first sheet layer not, between the second sheet layer having no stretchability, the and stretchable elastic film in at least the longitudinal direction are stacked, and the first sheet layer and the second sheet layer but in a number of joints spaced, the aspects are joined is formed through a through hole formed in said elastic film.
In which through holes are formed has the advantage that the air permeability is secured. Through hole need not be formed in all of the joints, be formed in some joint showing the breathability. If the elastic film is stretchable only in the longitudinal direction, the through hole has a shape extending in the longitudinal direction from the edge of the joint. If the elastic film is stretchable in both the longitudinal direction or MD direction, and the direction perpendicular thereto (e.g., CD direction), the through hole has a shape extending in both directions from the edge of the joint, around the junction optionally it may become an annular shape.

As previously mentioned, the elastic film of the present invention, the case can be stretchable in the longitudinal direction (e.g., MD direction), and a case of stretchable in the longitudinal direction and the perpendicular direction (e.g., CD direction).
The following form: in the latter case.
Is stretchable in the longitudinal direction and the width direction, a absorbent article having a stretchable region in at least the width direction intermediate region,
The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer having no stretchability, stretchable elastic film in the longitudinal direction and the width direction are laminated, and the first sheet layer and the second sheet layer, a number of joints spaced, are joined to form through holes formed in said elastic film,
The telescopic region is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
Joint area ratio occupied by total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, unlike the longitudinal stretching stress across the width direction mutually absorbent article, characterized in that there.

The joint is from the front-rear direction length, the orthogonal direction (width direction: CD Direction) length long form is provided.

Extendable stretch sheet in the longitudinal direction of the can, for example be prepared by the following method.
A first sheet layer having no stretchability, between the second sheet layer having no stretchability, a supplying step of interposing a stretched state a stretchable elastic film in at least one direction (longitudinal direction of the product),
In this feeding step, in a state in which the elastic film is interposed between the second sheet layer and the first sheet layer, from the outside of the first sheet layer and the second sheet layer, interval by heat melting unit applying heat melting energy to the elastic film by a number of hot-melt unit that opened, the elastic film to melt, said first sheet layer and the second sheet layer, a number of joint directly or via the elastic film a bonding step of bonding in,
It includes,
In the joining step, the joint portion of the first sheet layer not hole is formed in the entire region and the second sheet layer is left to form said stretchable region.

The elastic film, passed through a nip roll stage in which a pair of nip are arranged in the longitudinal direction opposed, before and after nip rolls stage mutually by accelerating the peripheral speed of the front nip rolls stage than the peripheral speed of the rear nip roll stage, the elastic how supplied to the supplying step the film in a stretched state is provided. Other methods may be one pass only a pair of nip rolls stage while wound elastic film to the drive roll for example S-shaped.

The heat melting apparatus, and an anvil roll and ultrasonic horn, the anvil roll number of projections spaced in the roll length direction and the outer circumferential direction on the outer surface is formed, the this projection group aspect which constitutes the hot melt unit by the ultrasonic horn is provided.
Instead of ultrasonic thermal melting apparatus may be another hot melt unit.

Than the melting point of the second sheet layer consisting of a melting point and a non-woven fabric of the first sheet layer consisting of a nonwoven fabric, the elastic film a low melting point of higher than the melting point, and lower than the melting point of the melting point and the second sheet layers of the first seat layer Given a melting energy corresponding to the temperature, the elastic film while thermally melting, the first sheet layer and second sheet layer does not completely melted or partially melted to result, holes are formed on the entire junction area the first sheet layer and second sheet layer no one is a form remaining.
However, the line speed at the time of manufacture of the stretchable sheet is faster. Therefore, even giving melting energy corresponding to a temperature above the melting point of the first sheet layer and second sheet layer, although the first sheet layer and second sheet layer at all melted not or partially melted, the junction region can be obtained form the hole is not formed on the whole.

From this point of view, the melting point is preferably from about 80 ~ 145 ° C. of the elastic film, the melting point of the first sheet layer and second sheet layer 85 ~ 190 ° C. approximately, in particular of about 130 ~ 190 ° C. Preferably, Further, the melting point of the first sheet layer and second sheet layer, the difference between the melting point of the elastic film 30 exhibiting a lower melting point preferably in the range of about 50 ~ 80 ° C..
As a preferred embodiment, the melting point of the elastic film is 95 ~ 125 ° C., the melting point of the first sheet layer 125 ° C. ultra ~ 160 ° C., more preferably 130 ~ 160 ° C., the melting point of the second sheet layer 125 ° C. ultra ~ 160 ° C., more preferably 130 ~ 160 ° C..

Preferable examples of the junction area of the joint portions in the elastic region is 0.14 ~ 3.5 mm 2, the area of the opening of the through hole in the natural length state, the first area of the junction-1 a .5 times, the area ratio of the joints in the elastic region is 1.8 to 22.5%.
Here, it means the percentage of the target portion occupied in a unit area of ​​the "area ratio", target portion (e.g. joint opening of the through hole) in the region of interest (e.g., stretchable region) an area of ​​the target area on the total area of ​​the in are those represented by dividing by percentage, especially the "area ratio of the junction" is intended to mean the area ratio of the extended state to the elastic limit in the expansion and contraction direction. The area of ​​the opening of the through hole, means the value the telescopic structure in the state of natural length, when the area of ​​the opening of the through hole is different like in the front and back of the elastic film is not uniform in the thickness direction It refers to the minimum value.
Joint area ratio in the present specification, later described anvil roll protrusions of size, shape, separation distance can be selected by selecting and arrangement pattern of the roll length direction and the roll peripheral direction.

The "tensile stress", JIS K7127: 1999 "Plastics - Test method for tensile properties -" according to the initial chuck interval (distance between marked lines) and 50 mm, a tensile speed measured by tensile test and 300 mm / min is the meaning "stress when stretched to 50% of the elastic limit (N / 35 mm)". If it is not possible to cut a test piece of 35mm width is to create a test piece excisable width, a value obtained by converting the measured values ​​into 35mm width.
If the region of interest is not large enough to collect sufficient specimens, if comparison of the stretch stress, even at an appropriate small specimens may at least compare.
Further, since the different plurality of extension stress in the region, whether the collection of the specimen becomes problematic. Therefore, apart from the fact that the absolute value of the stretch stress, for the comparison of stretching stress, the test piece was taken for each part of the stretch sheet, for each of the test specimens, 100% of the length of the natural state 150 % it is also possible to compare the magnitude by stress when elongated to a length.

As described above, according to the present invention, are stretchable in the longitudinal direction, has a stretchable region in the width direction intermediate region of the stretch sheet, a stretchable region stretching stress is different depending on the position in the stretchable region area absorption it can be obtained sex article. As a result, the follow-up of the respect to the movement of the wearer will be good, be effective, such as leakage prevention.

It is a plan view of the arrangement pattern example of the joint. Joint area ratio is a schematic plan view of an example of difference. Joint area ratio is a schematic plan view of another example of difference. Joint area ratio is a schematic plan view of another example different. Is an explanatory sectional view before joining the stretch sheet. It is an explanatory sectional view of a bonding state of the stretchable sheet. It is an explanatory sectional view of a deflated state of the stretchable sheet. Is an explanatory sectional view of a bonding state of the stretchable sheet through hole is formed. It is a schematic diagram of a joining means example. Is an explanatory plan view of a formation example of a through-hole. Aspect is an explanatory plan view of a formation example of differing through hole a. Is an explanatory plan view of a formation example of a through-hole. It is a developed state outline plan view of a tape type disposable diaper of the first embodiment. It is a developed state outline plan view of a tape type disposable diaper of the second example. The third example is a developed state outline plan view of a tape type disposable diaper. It is a developed state outline plan view of a tape type disposable diaper of the fourth embodiment. It is a developed state outline plan view of a tape type disposable diaper in the fifth embodiment. It is a developed state outline plan view of a tape type disposable diaper in the sixth embodiment. It is a plan view of a specific example of a tape type disposable diaper. Its is a rear view. 21-21 is a view taken along the line diagram. 22-22 is a view taken along the line diagram. Is a plan view showing various exemplary arrangement of the joint.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The absorbent article of the present invention absorbs disposable diapers, sanitary napkins, body fluids, such as absorbent pad, which means a product that retains.
The absorbent article has a retractable stretchable region in at least the longitudinal direction. Longitudinal addition, it is possible to telescopically configured to (waist direction (the width direction of the product) in disposable diapers) direction perpendicular thereto.

The stretchable region, as shown in FIGS. 5 to 8, between the first sheet layer 21 consisting of not having e.g. a nonwoven stretch, a second sheet layer 22 consisting of not having e.g. a nonwoven stretch, wherein is the front-rear direction stretchable elastic film 30 are laminated, and the first sheet layer 21 and the second sheet layer 22, directly or through the elastic film 30, a large number of joints spaced They are joined at 40.
Here, instead of the first sheet layer 21 and the second sheet layer 22 means that none stretch the "no stretch", in comparison with the stretch degree of the elastic film, substantially stretch which means that you do not.

In the bonding, for example, as shown in FIG. 9, between the anvil roll 60 having a protrusion 60a formed in a predetermined pattern on the outer surface of the ultrasonic horn 61, the first sheet layer 21, elastic film 30 and the second supplying sheet layer 22, the ultrasonic horn 61 applying ultrasonic melting energy, for example, mainly by melting an elastic film 30, bonded to the first sheet layer 21 and the second sheet layer 22.
Note that described in detail later for the bonding embodiment.

The peripheral speed of the elastic elongation in the manufacturing process of the film 30 (the length of the natural state as a reference a is taken as 100%), for example an anvil roll 60 which rotates, faster than the peripheral speed of the rear drive roll 62 It can be set by selecting the speed difference of those roles. 63 is a guide roller.

The stretch sheet after bonding in Figure 6, a cross section in the extended state is shown schematically. Releasing tension of the stretch sheet, as shown in FIG. 7 (schematic diagram) contracted by the contraction force of the elastic film 30, which is extendable with an external force is applied in the longitudinal direction (lateral direction in FIG. 7). Thus, the stretch sheet, the expansion and contraction direction, for example, to match the longitudinal direction of the disposable diaper, a disposable diaper is stretchable in the longitudinal direction.

The stretchable sheet can be manufactured with a predetermined area, when it is desired to exert a shrinkage force to the entire desired area, may be applied to the stretch sheet was cut to the desired area. In the conventional disposable diaper, sheet but carried out by fixing the rubber thread plurality of parallel is common, degradation due to deterioration of the hot melt adhesive for fixing to the thread rubber or sheet in which, as well as inferior in terms of stable productivity at the time of manufacture. These problems can be solved by the above stretch sheet.
Moreover, as seen in a contracted state of FIG. 7, the outer surface of the stretchable sheet is regular fine wrinkles or folds are produced, is good feeling of the wearer's skin.

On the other hand, in the above example, the first sheet layer 21 and the second sheet layer 22 is an example of joining the elastic film 30 is melted. In this case, (1) a mode in which the first sheet layer 21 and the second sheet layer 22 is bonded on the surface of the elastic film 30, (2) the surface portion of the elastic film 30 is melted and the first sheet layer 21 and the second sheet mode of bonding invades between the respective fiber layers 22 are bonded to penetrate between (3) substantially the entire elastic film 30 is melted, the respective fibers of the first sheet layer 21 and the second sheet layer 22 aspect, and the like. In the present invention, but is not limited to these examples for the bonding manner between the layers.
In embodiments, such of these embodiments (3), it can be a first sheet layer 21 and the second sheet layer 22 is directly, i.e. evaluated to be joined without interposing an elastic film.
The above aspects (1) to (3), the melting point of the elastic film 30, is a lower than the melting point of the first sheet layer 21 and the second sheet layer 22, the melting point of the elastic film 30, the first sheet layer 21 and or the second may be higher than the melting point of the sheet layer 22. In this case, in the form of elastic film 30 side surface portion of the first sheet layer 21 and or the second sheet layer 22 is bonded to the elastic film 30 by activating or melting.
Furthermore, in addition to the elastic film 30 is melted partially, may be those bonded by also melt the first sheet layer 21 and or the second sheet layer 22.
The first sheet layer 21 and or the second sheet layer 22 is a nonwoven, the fibers may have a core-sheath structure. In this case, for example, only the sheath component of the fiber is melted, it is possible to contribute to bonding.

Now, principal features of the present invention has a stretchable region in the width direction intermediate area, by that differ between the intermediate region and both side regions in the width direction, the stretching stress between the width direction mutually are different it is.
Then, as a means for this, it is that the total area of ​​the joint portions included in a unit area of ​​the area percentage of a unit area, i.e., selects the joint area ratio.
The present invention is a disposable diaper, especially when applied to a disposable diaper tape type, results in high effects or advantages. If it tries to assume when applied to disposable diapers of the tape type. For example, when it comes to side edge region of the diaper also shows a stretch, the side edge region is not fixed shape or flatness, difficult to attach the diaper to the wearer. Further, when the folds or wrinkles in the middle region of repeating irregularities in the longitudinal direction reaches the side edge region, which may cause a so-called lateral leakage. Therefore, the bonding area ratio of the side edge region is higher than the intermediate region, it is desirable to hardly deform, if necessary.

The joint area ratio, as FIG. 1 are referenced shows the proportion of the joining portion 40, 40 ... total area included in a unit area S in percentage. As the unit area S in the case, it is desirable to set to a size such as joint includes 10 or more (hardly a comparison of the stretch stress in fewer.). In the example of FIG. 1 includes 13 pieces of the joint. Further, the outer shape defining a unit area S may be other shapes such as a rectangle or a circle other than a square.
An example of the bonding portion 40 is a circular as shown in FIG. Of course, it may be a shape such as oval or rectangular. Lm array interval length of the machine direction in FIG. 1, Lc array interval length, Pm machine direction (MD (pitch length of the orthogonal direction orthogonal to the machine direction (cross direction), Pc is the orthogonal direction (cross direction: CD ) is the pitch length of.

The region in stretching the sheet, showing the manner in which the joint area ratio is different in FIGS. 2-6.
2, regions A, for B, <by a B, and stretching stress A> the joint area ratio A is obtained by the relation of B.
For example, in the case pitch length Pm and the pitch length Pc is long A, is compared with the case where the pitch length Pm and the pitch length Pc is short B, and pitch length Pm · Pc is long A (if the junction area rate is low) it is, is larger when the pitch length Pm · Pc is short B (if the junction area ratio is higher) than the elongation. As a result, the expansion and contraction stress, the relation of A> B.
Embodiment 2, since made different for each region of the tensile stress in the transverse direction of FIG. 2, the stretch stress is large in area A to correspond to the width direction intermediate region of the absorbent article. The stretching stress is small (so to speak stretching is small) to the B region corresponding to both outer sides of the center of the A area.

In the case of Figure 3, in the intermediate region, with respect to the longitudinal direction middle region A is an example in which a small B region stretching stress before and after. This example, before and after the B region, B region can correspond to the longitudinal direction end portions of the example disposable diapers, wearer because since stretch stress in this longitudinal direction end portion is small, the shape stability is excellent mounting becomes easy for.

In the present invention, the difference in the joint area ratio, in addition to density arrangement pattern, it is possible by varying the junction area.
To understand this, in FIG. 4, the area C is disposed a large number of small joints, an example where the same junction area and region D. The joint area <by a C = D, the stretch stress A> A is obtained by the relationship C = D.

Incidentally, the elastic film of the present invention may be one extensible only in the longitudinal direction, the use of two-way stretch film to stretch in a direction orthogonal directions, especially in the case of disposable diapers, the waist or waist it means to impart stretch, resulting in advantages such as enhanced fit.
In this case, as described above, if a higher bonding area ratio of the side edge region than the intermediate region, also as an intermediate region is stretchable in the width direction, not impaired substantially the shape retention of the diaper.

The thickness of the elastic film, the material strain-stress properties, physical properties such as melting point can be selected as appropriate. And the elastic film, and ultrasonic melting energy applied thereto, by selecting the like relationship between elongation of the elastic film during the production of the stretch sheet, as shown in FIG. 8, the coupling portion 40
It is possible to form the through-holes 31 around the. If as a first sheet layer 21 and the second sheet layer 22 is formed by, for example, nonwoven, nonwoven exhibits an air permeability, the formation of the through-hole 31, showing a ventilation on both sides of the stretch sheet. Thus, for example, when used as outer sheet or the outer sheet of a disposable diaper, breathable becomes good.

Although the reason is not necessarily clear that the vent holes 31 are formed, the elastic film 30 is melted by ultrasonic melting energy, and coupling portion 40 by pressing with projections 60a of the anvil roll 60 is thinned. While this time also thin elastic film 30, which peripheral portion of the coupling portion 40 reaches the breaking strength, breaking starts by stretching stress applied to stretch the elastic film 3, and contracts to balance point, to opening it is conceivable that.

Showed formation example of a through-hole 31 in the case of a circular through hole schematically in Figure 10. Crescent-shaped through-holes 31 substantially on both sides of the machine direction of the coupling portion 40 (the extending direction) is formed.

Coupling part, a direction perpendicular to the machine direction (extending direction): may be long in the (cross direction CD direction). In this case, for example, as shown in FIG. 11, can form the through hole 31 of the semi-circular to increase opening, preferably For greater breathability is a means.

On the other hand, the through-holes 31 is not essential to be formed in all of the coupling portion. If, when it forms a reliable through-hole 31, or be larger opening is requested may take the technique shown in FIG. 12.
That is, the stretchable sheet formed with coupling portion 40, as shown in FIG. 12 (b), passed through between the pair of rolls 64 having a projection or projections 64a, adjacent projections 64a of the one roll 64, between the projections 64a to thereby bite into the projections 64a of the other roll 64, and the deformation force to the stretchable sheet may form a through-hole 31.

(Example of application to a tape type disposable diapers)
Stretchable sheet formed as described above, but applied to an absorbent article generally first example of application to a suitable tape type disposable diaper is described as an application example.

As shown in FIG. 13, the stretch sheet formed as described above can be applied as an exterior sheet having stretchability region 84 in the width direction intermediate region of the tape type disposable diaper TD.
This by the advantages are many. That is, when or crouch when gets up the wearer, mainly around the diaper floats from body surface (away), or it may be shifted in the longitudinal direction, rather than those problems in the embodiment, the leakage can be prevented. Further, by the expansion and contraction direction of the stretchable region 84 and the front-rear direction, by the wrinkling by shrinkage of the stretch region 84 along the widthwise direction perpendicular to the longitudinal direction on the outer surface of the diaper is produced, wearer get out supine state when, also results in anti-slip effect in the ass part.

Further, as shown in FIG. 14, of the stretchable region 84 in the width direction intermediate region, the expansion ratio varied between before and after the portion 84A of the intermediate portion 84B and the second expansion region of the first expansion region, namely front and rear portions 84A are (for example the elongation of 200% or less) is assumed difficult elongation, the intermediate portion 84B can be made easily extended. In this case, there is a resistance to elongation and not the region before and after extended excessively, wearability is improved for caregivers.

As shown in FIG. 15, of the stretchable region 84 in the width direction intermediate area, with varying the expansion ratio in the longitudinal portion 84A and the intermediate portion 84B, a widthwise length of the stretch-resisting longitudinal portions 84A, stretchy intermediate portion it can be greater than the width of 84B.

As shown in FIG. 16, of the stretchable region 84 in the width direction intermediate region, it is possible to vary the stretch ratio in the width direction outer portion 84a and the middle portion 84b. In this case, as the joint area ratio and keep the relation of the central portion 84b> outer portion 84a> both side portions, it becomes a cross section bay shape along the surface of the wearer, and has high fit.

As shown in FIG. 17, as a disposable diaper TD, or a so-called "loincloth" type enveloping the front body by a long tape Ta.

Further, as shown in FIG. 18, it may be of the so-called "straight". In the illustrated example, on both outer sides of the stretchable regions 84, it is formed with stretchable region 83, 83 for around legs. These leg-surrounding elastic region 83, 83 is Yes formed inwardly from the side edges, does not impair the shape retention of the outer sheet.

Specific examples of the absorbent article of the present invention, in particular a disposable diaper cover type disposable diaper does not have an absorption element for use surface is optimal.
However, the stretch sheet and outer sheet may be provided with absorbent elements on its use surface side. As the absorber, the absorber mainly flocculent pulp, or although the fluffy pulp layer may be used an absorber which contains a high molecular absorbent polymer, the thickness in the case of providing an absorber There is desirably less than 2 mm. In the case of 2mm or more absorbers, wrinkling or twisting the absorber by contraction of the outer sheet, it tends to cause side leakage. Basis weight of the absorber 200 g / m 2 or less, more desirably 150 g / m 2 or less.

The disposable diaper cover type, without the absorber, or if thinner absorbent capacity as provided absorber is small, not through holes formed in the elastic film or less is desirable. For this purpose, the melting point of the elastic film 30, the junction by increasing the melting point of the first sheet layer 21 and or the second sheet layer 22 is formed, but the embodiment does not form a through hole.

After further including absorber detailing, as the absorber to be used, known, for example, pulp fibers stacks, assembly of filaments of cellulose acetate, etc., or a nonwoven fabric as a basic element, high if necessary the absorbent polymer mixture, can be used which is formed by sticking or the like. The absorber, such as for the shape and polymeric retention, can be packaged, such as crepe paper if necessary, by the packaging sheet with liquid permeability and liquid retention.
The shape of the absorber, in addition to it is possible to form a substantially hourglass shape having a narrow constriction width portion than front and rear sides in the crotch portion can be rectangular or the like, and an appropriate shape.

<Specific examples of the tape type disposable diapers>
19 to 22 shows an example of a tape type disposable diaper, the disposable diaper, the above inner surfaces of the laminated backsheet 1 that forms the back, between the liquid pervious top sheet 2, the absorbent body 3 is one that is interposed.

(Liquid-impermeable laminate backsheet)
Liquid-impermeable laminate backsheet 1 extends from the outer perimeter of the absorbent body 3, it is to block the movement of the back surface side of the absorbed exudates into the absorbent body 3. The elastic film of the laminate backsheet 1, can also be used a sheet having a moisture permeability without compromising the aqueous barrier in terms of stuffiness prevention.

Like appearance cloth diaper outer surface, in order to touch, the entire back surface of the laminated backsheet 1 is covered with a nonwoven fabric layer (first sheet layer 21 and the second sheet layer 22 described above), the sheets 1 and 2 the outer peripheral edge of the are extends to the outer edge of the diaper. The nonwoven layer is preferred spunbonded nonwoven.

(Top sheet)
The top sheet 2, such as porous or nonporous nonwoven fabric or perforated plastic sheet. The material fibers constituting the nonwoven fabric, olefin such as polyethylene or polypropylene, polyester, other synthetic fibers, amide or the like, can be used regenerated fibers such as rayon or cupra, natural fibers such as cotton. Further, as a processing method for the nonwoven fabric, spun lace method, spun bond method, SMS method, thermal bonding method, melt-blown method, needle punching method, air-through method may be a known method such as point bonding method. Is preferably fiber woven cloth is 15 ~ 30 g / m 2 for use in the liquid pervious top sheet 2, the thickness is preferably 0.05 ~ 1 mm.

The topsheet 2 extends outward from the periphery of the absorbent body 3, the portion which extends outside the absorbent body 3 side edges are secured by the laminated backsheet 1 for example, a hot melt adhesive or the like. Incidentally, pattern a point in the figure are those representing the anchoring portion.

(Leg standing gather)
Necessary, can be provided with leg standing gathers, it is shown the embodiment. Leg standing gather sheet 4, 4, in addition to various nonwoven fabric (spunbonded nonwoven fabric is preferred), the same plastic films as those used for the backsheet, or may be used these stretchable sheet, the skin in terms of feel of the nonwoven it is preferable to water-repellent treatment. Projecting portion in the width direction center side of the leg standing gather sheet, in both front-back ends are fixed by means such as a hot melt adhesive (top sheet 2 surface in the illustrated embodiment) the article inner surface in the inclined state, is a collapsed portion and which is, longitudinal direction intermediate portion between them has a free portion of the non-fixed to the distal end or the like of the free portion (the end portion in the width direction central side in the deployed state), such as rubber thread elongated It is fixed by hot melt adhesive or the like in a state where Jo elastically stretchable region material 4G was stretched along the longitudinal direction. This elongated resilient and elastic members 4G are in the illustrated example is provided a plurality of at predetermined intervals, it may be one. The free portion as a result of contraction forces of the elongated resilient and elastic members 4G acts, as shown in Figure 22, the leg standing gather be erected for use surface of the diaper (topsheet 2 surface in the illustrated embodiment) Configure.

(Fastening tape)
The side flaps of the back side portion B, along with its fastening tapes T which protrude from the side edge is attached, and a front target tape 6 is adhered along the waist portion surface of the ventral side portion F in the width direction , when the mounting of the body, in a state that held against the diaper body and fastened via the hook material 5 to the front target tape 6 by turning on both sides of the fastening tape T from each side of the waist on the ventral side outer surface. Front target tape 6 can be omitted, the fastening tape T in the case to be directly hooked secured to the nonwoven fabric of the diaper outer surface. 7 is a division perforation.

Construction material of the first sheet layer 21 and the second sheet layer 22 is not particularly limited with no use as long as the sheet-like, it is preferable to use a nonwoven fabric from the viewpoint of breathability and flexibility. Nonwoven, is not particularly limited if the material fiber is. For example, olefin such as polyethylene or polypropylene, polyester, synthetic fibers polyamide such as rayon or regenerated fibers such as cupra, etc. and natural fibers such as cotton, mixed fibers of two or more is used, composite fibers the like may be exemplified. Furthermore, the nonwoven fabric may be one produced by any process. As the processing method, known methods, for example, spun lace method, spun bond method, thermal bond method, melt-blown method, needle punching method, air-through method, point bonding method, and the like. When using a nonwoven fabric, the basis weight is preferably set to 10 ~ 25g / m 2 approximately.

Incidentally, the shape of the natural length state of the individual joints 40 and the through hole 31, (including those of the linear or rounded) perfect circle, ellipse, polygon such as a rectangle, a star, cloud, etc., optionally it can be a shape. The size of the individual joints 40 may be appropriately determined, but the greater the impact on the feel hardness of the bonded portion 40 is too large, the bonding area is too small, the less material together can not be sufficiently bonded Therefore, if normal, the area of each joint 40 is preferably about 0.14 ~ 3.5 mm 2. The opening area of ​​each through hole 31, may be equal to or more than the junction for joint is formed via the through-hole 31 is preferably set to 1 to 1.5 times the area of ​​the bonding portion.

Further, as the junction of the present invention may have a direct migration from the main stretchable region in the non-stretchable region but it is also possible to form the transition stretchable region in between.
Area and the area of ​​the individual joint 40 in each region, the normal case is to be as follows preferred.
(Non-stretchable area)
Area of the joint portion 40: 0.14 ~ 3.5mm 2 (particularly 0.25 ~ 1.0 mm 2)
The area ratio of the joints 40: 16 to 45% (especially 25-45%)
(Main expansion area 84)
Area of the joint portion 40: 0.14 ~ 3.5mm 2 (particularly 0.14 ~ 1.0 mm 2)
The area ratio of the joints 40: 1.8 to 19.1% (especially 1.8 to 10.6%)
(Transition stretchable region)
Area of the joint portion 40: 0.14 ~ 3.5mm 2 (particularly 0.25 ~ 1.0 mm 2)
The area ratio of the joints 40: 8 to 22.5% (in particular 12.5 to 22.5%)

Although planar array of junctions 40 and the through hole 31 can be appropriately determined, preferably planar array repeated regularly, and orthorhombic lattice shape as shown in FIG. 23 (a), shown in FIG. 23 (b) such hexagonal lattice pattern (these are also referred to as staggered), FIG. 23 (c) it is shown as a square lattice, FIG. 23 (d) to indicate such a rectangular lattice shape, a parallel as shown in FIG. 23 (e) Taikakuko something (as shown, a number of parallel oblique form are provided two groups as group column intersect with each other) form or the like (these inclined at an angle less than 90 degrees with respect to expansion and contraction direction including) other way regularly repeated ones, the sequence of the group (group unit of the joining portion 40 may even irregular even regular, or in pattern or character shape or the like) that is assumed to be repeated regularly It can also be. Arrangement of the junction 40 and the through hole 31, the main stretch region 84, except that the same thing in the transition stretch region and the non-stretchable region may be different.

The elastic film 30 is not particularly limited, it can be used without particular limitation as long as it is a resin film having its own elasticity, for example, styrene elastomers, olefin elastomers, polyester elastomers, polyamide elastomers and polyurethane one or more blends of thermoplastic elastomers such as an elastomer, can be used after processed into a film by extrusion molding such as T-die method or inflation method. Further, as the elastic film 30, the other of the non-porous, and may also be any of a large number of holes or slits for ventilation are formed. In particular, the tensile strength in the stretching direction is 8 ~ 25 N / 35 mm, stretch direction perpendicular tensile strength 5 ~ 20 N / 35 mm in a direction, a tensile elongation of 450 to 1,050% in the stretching direction, and in a direction orthogonal to the stretching direction preferably tensile elongation is an elastic film 30 of 450 to 1,400 percent. The tensile strength and tensile elongation (breaking elongation), using a tensile tester (e.g. SHIMADZU Corp. AOUTGRAPHAGS-G100N), except that the test piece had a width of 35 mm × length 80mm of rectangular shape, JIS K7127: 1999 "plastics - test method for tensile properties -" according to the initial chuck interval is 50 mm, refers to a value measured tensile rate of 300 mm / min. But not limited elastic thickness of the film 30 are particularly preferably about 20 ~ 40 [mu] m. Although not limited elastic basis weight of the film 30 is particularly preferably in the range of about 30 ~ 45 g / m 2, it is preferred in particular 30 ~ 35 g / m 2 approximately.

<Description of the language in the specification>
The following terms in the specification, unless particularly described in the specification is intended to have the following meanings.
- "elongation" refers to the value at the time of the natural length of 100%.
- "mass per unit area" is intended to be measured in the following manner. After the sample or specimen was pre-dried, standard state (test location, temperature 20 ± 5 ° C., 65% relative humidity or less) was left in the test chamber or within the device, to the condition that a constant weight. Predrying, relative humidity 10-25% of the sample or specimen, refers to constant weight in an environment that does not exceed the temperature 50 ° C.. Incidentally, the official moisture regain is about 0.0% of the fibers may not be performed predrying. Basis weight plate from the specimen in the state became constant weight (200mm × 250mm, ± 2mm) was used to cut a sample of dimensions of 200mm × 250mm (± 2mm). The weight of the sample was measured 20 times and by calculating the weight per square meter, a basis weight.
- "thickness" is used automatic thickness measuring instrument (KES-G5 Handy Compression measurement program), load: 10 gf / cm 2, and the pressure area: automatically measured under the conditions of 2 cm 2.
If description of the environmental conditions in and testing and measurement is not, the test and measurement standard conditions (test location, temperature 20 ± 5 ° C., 65% relative humidity or less) be given in the laboratory or in the device .

The present invention, in addition to the pants-type disposable diapers as in the above example, those available tape type, various disposable diapers, such as pad-type sanitary napkin or the like, the absorbent article in general with a telescopic structure.

A ~ D ... area, Ba ... back body, Fr ... front body, T, Ta ... tape, TD ... tape type disposable diaper, 1 ... stretchable sheet, 2 ... top sheet, 21 ... first sheet layer, 22 ... second sheet layer, 30 ... elastic film, 31 ... through hole, 40 ... junction, 84 ... stretchable region.

Claims (9)

  1. Is stretchable in the longitudinal direction, a absorbent article having a stretch sheet having a stretchable region in the width direction intermediate area,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
    The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, longitudinal stretching between the width direction mutually absorbent article characterized in that the stress is different.
  2. The absorbent article of claim 1, wherein arranged are staggered of the joint.
  3. Are stretchable in the longitudinal direction, a absorbent article having a stretch sheet having a stretchable region in the width direction intermediate area,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
    The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, unlike in the intermediate region and both side regions in the width direction, and, by being different in the intermediate region an absorbent article, wherein a is different from the longitudinal direction of the telescopic stress between the width direction each other.
  4. Longitudinal direction is extendable, a first stretch region in the front-rear direction intermediate region of the width direction intermediate area, an absorbent article with a stretch sheet having a second stretchable region in the front and rear of the front-rear direction intermediate region Te,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
    The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, by the junction area fraction of an total area of ​​the joint portions included in the unit area is different in the longitudinal direction intermediate region and both side regions in the width direction intermediate region in the width direction, the width direction different front and rear direction of stretch stress between each other, and an absorbent article which said by that differ longitudinal direction intermediate regions and its front and rear region, characterized in that the expansion and contraction stress in the longitudinal direction is different.
  5. Longitudinal and retractable in the direction and the width direction, An absorbent article comprising a stretchable sheet also having a stretchable region in the width direction intermediate area,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer, the and stretchable elastic film on at least the front-rear direction are laminated, and the first sheet layer and the a second sheet layer, directly or via an elastic film, is joined in a number of joints spaced,
    The stretchable sheet is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, longitudinal stretching between the width direction mutually absorbent article characterized in that the stress is different.
  6. Is stretchable at least in the longitudinal direction, a absorbent article having a stretch sheet having a stretchable region in at least the width direction intermediate region,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer having no stretchability, the and stretchable elastic film in at least the longitudinal direction are stacked, and the second 1 sheet layer and the second sheet layer is in a number of joints spaced, are joined to form through holes formed in said elastic film,
    The telescopic region is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, longitudinal stretching between the width direction mutually absorbent article characterized in that the stress is different.
  7. Is stretchable in the longitudinal direction and the width direction, a absorbent article having a stretchable region in the width direction intermediate area,
    The stretch sheet comprises a first sheet layer having no stretchability, between the second sheet layer having no stretchability, stretchable elastic film in the longitudinal direction and the width direction are laminated, and the first sheet layer and the second sheet layer, a number of joints spaced, are joined to form through holes formed in said elastic film,
    The telescopic region is contracted by the contraction force of the elastic film, and can extend and an external force is applied in the longitudinal direction,
    In the stretch sheet, joint an area fraction of an total area of ​​the joint portions included in the unit area, by which different between the intermediate region and both side regions in the width direction, longitudinal stretching between the width direction mutually absorbent article characterized in that the stress is different.
  8. The absorbent article is a disposable diaper, extending in the longitudinal direction around the crotch region in the width direction intermediate region, the absorbent article of claim 1 further comprising a stretchable region which expands and contracts in the longitudinal direction.
  9. The absorbent article is a sanitary napkin extends in the longitudinal direction in the width direction intermediate region, the absorbent article of claim 1 further comprising a stretchable region which expands and contracts in the longitudinal direction.
PCT/JP2016/052814 2015-01-30 2016-01-29 Absorbent article having elastic regions WO2016121984A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2015017498A JP5980355B2 (en) 2015-01-30 2015-01-30 Expansion and contraction structure of the absorbent article, and pants-type disposable diaper using the same
JP2015-017498 2015-01-30
JP2015-195467 2015-09-30
JP2015195467A JP6052747B1 (en) 2015-09-30 2015-09-30 Absorbent article having a stretchable region

Publications (1)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05228177A (en) * 1992-02-24 1993-09-07 Nippon Kiyuushiyuutai Gijutsu Kenkyusho:Kk Panties-shaped physiological article having novel elastic composite in stretching part
JP2004000465A (en) * 2002-03-22 2004-01-08 Kao Corp Absorbent article
JP2004532758A (en) * 2001-06-21 2004-10-28 ザ プロクター アンド ギャンブル カンパニー Laminated web with elastic
JP4508885B2 (en) * 2005-01-20 2010-07-21 花王株式会社 The absorbent article
JP2012051301A (en) * 2010-09-02 2012-03-15 Three M Innovative Properties Co Elastic laminate sheet
JP4934835B2 (en) * 2007-04-10 2012-05-23 株式会社瑞光 Method for producing a laminated stretchable sheet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05228177A (en) * 1992-02-24 1993-09-07 Nippon Kiyuushiyuutai Gijutsu Kenkyusho:Kk Panties-shaped physiological article having novel elastic composite in stretching part
JP2004532758A (en) * 2001-06-21 2004-10-28 ザ プロクター アンド ギャンブル カンパニー Laminated web with elastic
JP2004000465A (en) * 2002-03-22 2004-01-08 Kao Corp Absorbent article
JP4508885B2 (en) * 2005-01-20 2010-07-21 花王株式会社 The absorbent article
JP4934835B2 (en) * 2007-04-10 2012-05-23 株式会社瑞光 Method for producing a laminated stretchable sheet
JP2012051301A (en) * 2010-09-02 2012-03-15 Three M Innovative Properties Co Elastic laminate sheet

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