JP2001046436A - Pants type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pants type disposable diaper with excellent fittability, no trouble in wearing trousers, having a disposal tape attached thereto used in a small amount while securing required length for disposal. SOLUTION: This disposable diaper has a disposal tape 8 placed in the fixed area of an expansible elastic member at the edge 1 of an opening around a waist, on the back sheet 5 of a front body 3 or rear body 4, with the longitudinal direction of the tape 8 oriented in the vertical or horizontal direction. The disposal tape 8 has a flexural rigidity of 2×10-3 N.cm2/cm or less per unit length of the tape when it is folded along a straight line perpendicular to the direction of expansion of the expansible elastic member disposed on the edge 1 of the opening in the diaper, and has a breaking load of 11.3 N/cm or more per unit width of the tape with respect to a tensile load imposed in its longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disposable diaper to be used as a diaper for infants or incontinent persons. More specifically, the present invention relates to a pants-type disposable diaper in which a disposal tape is attached to a back sheet surface, has an excellent wearing feeling, does not become a hindrance when wearing pants, etc., and after use. The present invention relates to a pants-type disposable diaper that can be disposed of in a compact and sanitary manner without soiling hands.

[0002]

2. Description of the Related Art A brief-type wearing article provided with an adhesive-applied portion at a free end of a joint on the side of a waist has been proposed as a disposal means of a sanitary article after use (Japanese Utility Model Application Laid-Open No. 4-104).
No. 117618). This is because the tab is extended to the side of the waist, but it is necessary to increase the width of the brief material in order to attach the tab, so that there is a problem that the cost is high and the bonding area cannot be substantially widened. Was not always enough. Further, it has been proposed to use a stretchable elastic material for a tape used at the time of disposal.
However, after the diaper is rolled, when the tape is stretched and fixed to the backsheet, the tape shrinks and the backsheet in the area where the tape is fixed sometimes breaks, or the adhesive part of the tape peels off from the backsheet. In some cases, the tape came off, which hindered disposal.

In Japanese Utility Model Publication No. 8-10305,
One end of the strip-shaped tape fastener for fastening at the time of disposal is fixed to a lower portion of a fixing region of the elastic elastic member at the opening edge of the waist portion, and is folded in the length direction so as to be located in the back side portion. An underpants diaper disposed is disclosed. Since one end of this tape fastener is fixed to the lower part of the fixing region of the elastic elastic member at the opening edge of the waist portion of the pants type diaper, a longer length is required to cross the waist opening edge. Therefore, the manufacturing cost increases accordingly. In addition, since the tape fastener is disposed below the diaper in a folded state, the tape fastener is easily peeled off when the pants or the like are put on the diaper, which is inconvenient.

[0004]

DISCLOSURE OF THE INVENTION The present invention overcomes the problems of the conventional pants-type disposable diaper to which the above-mentioned conventional disposal tape is attached, has an excellent wearing feeling, and is a hindrance when wearing pants or the like. Another object of the present invention is to provide a pants-type disposable diaper that can be disposed of in a compact and sanitary manner without soiling hands when disposing after use.

[0005]

The present invention includes the following inventions. (1) having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these two sheets, by joining opposing side edges of the front body and the back body A waist opening and a pair of leg openings are formed, an elastic elastic member is arranged along the waist opening and the pair of leg openings, and a disposal tape is arranged on the backsheet surface of the back body. In the pants-type disposable diaper, the disposal tape is composed of a fixed portion adhered and fixed to the back sheet surface and a free portion continuous from the fixed portion, and the free portion is folded in the longitudinal direction, and the front end region is formed. At least a part is provided with a locking means used at the time of diaper disposal to form a locking portion,
A pants-type disposable diaper, wherein the fixing portion is located in an area around the waist where the elastic member is arranged.

(2) The disposal tape is arranged so that its longitudinal direction is oriented in the vertical direction of the diaper, and has a length such that when the disposal tape is extended, its locking means can be positioned beyond the opening around the waist. The pants-type disposable diaper according to item (1), wherein

(3) The disposal tape has a fixing portion located near both side edges of the diaper, and is disposed with its longitudinal direction directed to the left and right directions of the diaper. The pants-type disposable diaper according to item (1), wherein the locking means is long enough to be positioned beyond the side seam portion of the diaper.

(4) The discarding tape has a free portion folded back once to the fixed portion side as a locking portion,
The pants-type disposable diaper according to any one of items (1) to (3), wherein the locking portion is folded so as to be an upper layer with respect to the fixing portion.

(5) The discard tape has a single or a plurality of continuous intermediate portions between the fixed portion and the locking portion, and the free portion has a fixed portion, an intermediate portion, and a locking portion in this order. The pants-type disposable diaper according to any one of (1) to (4), wherein the pants-type disposable diaper is folded by being folded outward. In the diaper of the present invention, of the folded free portions, the uppermost tape portion provided with the locking means is referred to as a locking portion, and the other free portions are referred to as intermediate portions.

(6) The discarding tape is characterized in that the locking portion is releasably joined to a fixed portion or an intermediate portion (a free portion excluding the locking portion) facing by the locking means.
The pants-type disposable diaper according to any one of (1) to (5).

(7) The discard tape is releasably joined to at least a part of a fixing part and a backsheet surface, at least a part of an intermediate part (a free part excluding a locking part) of the discarding tape. The pants-type disposable diaper according to any one of items (1) to (6), characterized in that:

(8) The pants tape according to any one of (1) to (7), wherein the disposal tape has a fold in the folded portion. Diapers.

(9) The disposal tape is characterized in that at least one of the fixing portion, the intermediate portion, and the locking portion is formed separately. The pants-type disposable diaper according to any one of the above.

(10) The disposal tape is characterized in that at least one of the fixing portion, the intermediate portion and the locking portion is formed of a different material from the other portions. Terms ~
(9) The pants-type disposable diaper according to any one of the above items (9).

(11) The tape for disposal has a bending rigidity per unit length of 2 × 10 ⁻ when the tape is bent along a straight line perpendicular to the direction of expansion and contraction of the elastic member disposed at the opening around the waist. and a ³ N · cm ² / cm or less, and the breaking load per tape unit width when pulled tape in its longitudinal direction, characterized in that it is 11.3N / cm or more (1) to (10 The pants-type disposable diaper according to any one of the above items).

(12) The disposal tape according to any one of (1) to (11), wherein the locking portion means in the locking portion is an adhesive or a hook-and-loop fastener. Pants-type diapers.

(13) The disposal tape has a knob at the tip of the locking part. (1)-(12)
Item 3. The pants-type disposable diaper according to any one of Items 1.

(14) In the disposal tape, the locking means at the locking portion is an adhesive, and a release agent layer is formed on the fixing portion facing the adhesive layer and / or on the back sheet surface. The pants-type disposable diaper according to any one of items (1) to (13), characterized in that:

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION A pants-type disposable diaper according to the present invention is one in which a disposal tape is attached to a fixing region of an elastic elastic member at an opening edge at a waist portion of a back body of a back body. The pants-type disposable diaper of the present invention having such a configuration is excellent in wearing feeling, does not become a hindrance when wearing pants, tights, and the like, and is required at the time of disposal processing easily with a small amount of tape used. Since the waste diaper is provided with a disposal tape capable of ensuring a sufficient length, the used diaper can be kept in a compact state and can be disposed of in a sanitary manner.

The top sheet used for the pants-type disposable diaper of the present invention is a liquid-permeable nonwoven fabric or woven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester, other thermoplastic resin or the like. Used. Further, those made of natural fibers may be used, and those manufactured from a wide range of materials such as a combination of synthetic fibers and natural fibers may be used. In any case, since the top sheet is a part that comes into direct contact with the skin, the top sheet may be soft and comfortable, and may be breathable.

Since the central region of the top sheet is disposed on the absorber, it is preferable that the central region be made of hydrophilic fibers so that the liquid can be quickly transmitted. It is preferable that the liquid absorbed by the absorber is water-repellent so that it does not seep outside.
Further, the top sheet does not need to be constituted by a single sheet, but may be constituted by a plurality of sheets such as a center top sheet and a side top sheet. When a top sheet is composed of a plurality of sheets, different materials may be used for each sheet, or the same material may be used.

The back sheet used in the pants-type disposable diaper of the present invention includes a liquid-impermeable film such as polyethylene, a material in which a non-woven fabric or a woven fabric is bonded to the liquid-impermeable film, Nonwoven fabrics, woven fabrics, and the like can be used, but there is no particular limitation as long as the moisture in the absorbent does not seep outside the diaper. Further, it may be embossed in a pattern to give a cloth-like appearance, or may be further matte-finished. In the case of using a film, a known moisture-permeable film that is permeable to liquid but can transmit only water vapor may be used, which is preferable because it prevents stuffiness. In addition, a stretchable material may be used to fit the wearer, and a polyurethane film, a natural rubber sheet, a foam sheet, or the like can be used. good.

The absorbent used in the pants-type disposable diaper of the present invention is formed of cotton-like pulp, a high water-absorbing polymer substance, a hydrophilic sheet, etc., but is particularly limited as long as it has a water-absorbing property. Rather, it is formed from known absorbent materials commonly used in conventional disposable diapers and other absorbent articles. That is, a single-layer or multi-layer mat made of absorbent fibers such as cotton-like pulp and rayon is wrapped by a hydrophilic sheet, and the superabsorbent polymer material is uniformly mixed in each mat or between the mats. And the like arranged in layers can be used. Absorbents in which the superabsorbent polymer material is uniformly mixed are formed by mixing 3 to 60% by weight of a heat-fusible substance with cottony pulp and then thermocompression bonding. Or only the superabsorbent polymer substance may be wrapped by a hydrophilic sheet.

As the cotton-like pulp, those having a fiber length of 5 mm or less obtained by defibrating a chemical pulp sheet, a waste paper pulp sheet, or a mechanical pulp sheet with a crusher are usually used. The pulp raw material is not limited to softwoods, but hardwoods, straws, bamboos, and kenafs are also applicable. The amount of the pulp used varies depending on the intended absorber, for example, depending on whether it is used alone, a plurality of layers are used, or another absorbent is used in combination.
²

As the superabsorbent polymer, starch-based, cellulose-based and synthetic polymer-based substances are used. That is, a starch-acrylic acid (salt) graft polymer, a saponified starch-ethyl acrylate graft copolymer, a saponified starch-methyl methacrylate graft copolymer, a saponified starch-acrylonitrile graft copolymer, Saponified starch-acrylamide graft copolymer, starch-acrylonitrile-2
-Saponified acrylamide-2-methylpropanesulfonic acid graft copolymer, acrylic acid (salt) polymer, polyethylene oxide crosslinked with acrylic acid, crosslinked product of sodium carboxymethylcellulose, crosslinked polyvinyl alcohol-maleic anhydride reactant Things. Among them, those which absorb urine, body fluid, and water at least 20 times their own weight, and sodium polyacrylate-based ones are most suitable in terms of absorption performance.

The amount of the superabsorbent polymer is 10 to 500 parts by weight per 100 parts by weight of the dried floc.
It is preferably 15 to 300 parts by weight, and when such amount of the superabsorbent polymer is substantially uniformly distributed in the cotton-like pulp, when the superabsorbent polymer swells by absorbing water,
The particles have minimal interference with each other, are unlikely to form a permeation barrier in continuous contact, and can absorb urine and bodily fluids.
Good permeation and absorption in the dimensional direction.

The shape of the absorber is not particularly limited, such as an hourglass shape, a rectangular shape, and a T-shape, and may be any shape as long as it fits into a crotch. In general, in order to improve the feeling of wearing, it is particularly preferable to have a shape in which the crotch portion is narrowed, such as an hourglass shape or a T shape.

In the pants-type disposable diaper according to the present invention, the elastic member is disposed in an extended state around the opening around the leg, the opening around the waist, and the like, and is adhered and fixed with a hot melt adhesive. As the elastic member, a urethane film, urethane thread, urethane foam, thread rubber or the like is used.

The disposal tape used in the pants-type disposable diaper of the present invention comprises a fixing portion adhered and fixed to the backsheet surface and a free portion continuous from the fixing portion, and the free portion is folded. The fixing portion is adhered and fixed to the back sheet in a region where the elastic member of the opening around the waist is arranged. At this time, the direction in which the disposal tape is disposed is not limited, and the longitudinal direction of the disposal tape may be directed in the vertical direction of the diaper or in the left-right direction. In addition, there is no limit on the number of tapes to be attached, and there is no problem if two or more tapes are attached.

Further, the material forming the fixing portion of the disposal tape is made of a material per unit length of the tape when the disposal tape is bent along a straight line perpendicular to the direction of expansion and contraction of the elastic member at the opening edge around the waist. Flexural rigidity is 2 × 10 ^-3 N ・
cm ² / cm or less, and a breaking load per unit width of the tape when the waste tape is pulled in the longitudinal direction is 11.3 N / cm or more. In addition, the value of the bending rigidity defined here is a value in a case where the disposal tape is bent along a straight line parallel to the longitudinal direction of the disposal tape when the disposal tape is arranged in a direction orthogonal to the elastic member around the waist. In the case where the waste tape is arranged in parallel with the elastic member around the waist, the value is obtained when the disposal tape is bent along a straight line perpendicular to the longitudinal direction.

In the present invention, the bending rigidity of the tape material is
Using a pure bending tester manufactured by Kato Tech Co., Ltd.
The optimum bending rigidity value was selected. Specifically, the length
The bending stiffness of a tape test piece of 20cm in length is measured with a pure bending tester
Measured and obtained bending stiffness value (N · cm^Two) To 20c
m divided by the bending stiffness per unit length (N · cm ^Two
/ Cm). Also, dispose the disposal tape in its longitudinal direction.
The breaking load when pulling on a 1.5 cm tape
Specimens were measured according to the measurement method specified in JIS-P-8113.
And the measured breaking load value (N) is 1.5
cm to determine the breaking load per unit width (N / cm)
Was.

The bending rigidity is 2 × 10 ⁻³ N · cm
^When it exceeds ² / cm, the bending rigidity is large, so that when adhered and fixed on the elastic elastic member at the opening around the waist, the followability is poor and it is easy to peel off. Under actual use conditions, since heating is performed by body temperature, peeling is more likely to occur, which is a problem. In addition, since it is adhered to the vicinity of the waist, if the flexural rigidity is high, it becomes hard, and there is a concern that there is a high possibility that a scratch will occur when touching the skin. Further, the tensile strength (in the present invention, expressed as a breaking load per unit width) needs to be a value of 11.3 N / cm or more, and preferably 13.3 N / cm or more. 11.3
If the strength is less than N / cm, the material is easily broken, which is not preferable.

Further, as a material of the tape for disposal,
Films formed from biodegradable resins such as polyolefin resins such as polypropylene, polyethylene and polystyrene, polyester resins such as polyethylene terephthalate, polybutylene terephthalate and their copolymers, polyamide resins such as nylon 6 and nylon 66, and polyvinyl alcohol polyesters. Alternatively, a nonwoven fabric formed of fibers made of these resins can be used. Furthermore, a composite sheet obtained by laminating these films and a nonwoven fabric can also be used.

The weight of the disposal tape is 8 to 15
Preferably 0 g / m ^2, more preferably 10 to 50 g / m ^2. When the basis weight is less than 8 g / m ² , not only the strength is weak, but also the film tends to be broken when stretched. further,
There is no stiffness and handling is inconvenient. On the other hand, the basis weight is 1
If it exceeds 50 g / m ² , the tape will be hard and the fit will be poor when the diaper is attached.

The width of the discard tape is 0.5 to 4 c.
m is preferable. If the width of the tape is less than 0.5 cm, the strength of the tape is weakened, the tape is easily broken when stretched, and the width of the tape is too narrow, which is inconvenient to handle, and the area of the locking portion is also small. Is not preferred. On the other hand, if it exceeds 4 cm, the width of the tape becomes wide, and the feeling of wearing the diaper becomes poor.

The length of the fixing portion of the discard tape is 0.5 to
6 cm is preferred. When the thickness is less than 0.5 cm, the fixing portion is easily peeled off from the diaper when using the tape, which is not preferable. On the other hand, if it exceeds 6 cm, it is too long and the wearing feeling is remarkably inferior.

As for the method of fixing the fixing portion of the waste tape to the back sheet, it is preferable that the fixing portion is fixed with an adhesive. As an adhesive used for fixing, a method using an acrylic or styrene adhesive is generally used, but a pressure-sensitive adhesive may be used, or a curing type that solidifies over time and exhibits an adhesive force. May be used. In addition, the connecting portion in the case where the disposal tape is connected by a plurality of tapes can be joined by the same means as the fixing portion.

The free portion, which is continuous with the fixed portion, is provided with a locking means on at least a part of the distal end region, and serves as a locking portion for joining the rolled diaper to the back sheet surface when the diaper is discarded. . The length of the free portion may be any length as long as the locking means of the locking portion can be fixed to the backsheet surface of the rounded diaper during extension, and is preferably 1.5 to 15 cm. If the free portion is less than 1.5 cm, the portion that is too short and exceeds the opening around the waist decreases, making it difficult to fix. On the other hand, if it exceeds 15 cm, it is undesired because it interferes with mounting.

The locking means provided on the free portion is formed of an adhesive or a hook member constituting a hook-and-loop fastener. When the back sheet surface is a plastic film, the locking means is preferably configured as an adhesive layer. When the back sheet surface is a nonwoven fabric, the locking means may be formed of any of an adhesive and a hook member of a hook-and-loop fastener, and is not particularly limited.

It is preferable to form a knob at the tip of the free portion adjacent to the locking means for facilitating peeling of the disposal tape. The knob portion may be provided with a portion where no locking means is provided at the end of the free portion, a covering tape may be attached to the end of the portion where the locking means is provided, or an end may be provided at the portion where the locking means is provided. It can be formed by bending the inside of the part.

In the present invention, the fixing portion and the free portion constituting the discard tape may be formed of one piece of adhesive tape, or the fixing portion and the free portion may be formed of different materials, and they may be connected. May be done. Further, the free portion may be formed separately as an intermediate portion connected to the fixed portion and a locking portion connected to the intermediate portion. In this case, the intermediate portion and the locking portion may be formed of the same material, or may be formed of different materials as long as the strength is satisfied.

Further, the disposal tape is disposed on the diaper with the free portion folded in the length direction. In this case, the folded state may be a folded state.
It may be in a state of being folded into three in a letter shape, or in a state of being folded three or more times. As described above, in order to maintain the folded state, the locking means is peelably joined to the fixed portion surface or the free portion surface, and further, the surface where the folded portions are in contact with each other, or the free portion. Preferably, an adhesive layer is provided on at least a part of the surface in contact with the back sheet in a releasable manner.

Hereinafter, the pants-type disposable diaper of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a pants-type disposable diaper of the present invention showing a state where a disposal tape is attached. In FIG. 1, a disposal tape 8 includes a back body 4 of a disposable diaper in which a front body 3 and a back body 4 are joined by a side seam 6 to form an opening 1 around a waist and an opening 2 around a leg. On the surface of the back sheet 5 of
The longitudinal direction is arranged in the up-down direction of the diaper, and is adhered and fixed to the back sheet 5 in the region of the waist opening 1 where the elastic member is arranged.

FIG. 2 is a perspective view of a pants-type disposable diaper showing a state of attachment of a disposal tape 8 different from that of FIG. In FIG. 2, the disposal tape 8 is disposed on the surface of the back sheet 5 of the back body 4 near the both side edges of the diaper, with its longitudinal direction facing the left and right directions of the diaper. The region of the portion 1 where the elastic members are arranged is adhered and fixed to the back sheet 5.

FIG. 3 is a sectional view showing a state in which the disposal tape 8 attached to the pants-type disposable diaper 1 shown in FIG. 1 is cut along the line XX ′, with the X ′ side facing up. It is.
In FIG. 3, the disposal tape 8 is composed of a fixed portion 9 and a free portion 10 continuous with the fixed portion 9, and the free portion 10 is folded and placed in a diaper in a folded state. In the disposal tape 8, the fixing portion 9 is adhesively fixed to the back sheet 5 by a fixing adhesive 17 in a region of the waist opening 1 where the elastic elastic member 13 is arranged, and the end of the free portion 10. Is formed with a knob portion 11,
A locking means 12 is provided adjacent to the knob 11 to form a locking portion 14.

In this case, the locking means 12 is made of, for example, a pressure-sensitive adhesive layer and is peelably joined to a release agent layer (not shown) provided on the surface of the fixing portion 9 facing the same. The portion of the folded free portion 10 that is in contact with the back sheet 5 may be in a non-joined state with the back sheet 5,
Alternatively, a pressure-sensitive adhesive layer is disposed on at least a part of the free portion 10, and a release agent layer (not shown) is provided on the facing back sheet 5.
It may be in a state of being detachably joined by providing such as.

FIG. 4 shows the structure of the discard tape 8 different from that of FIG. 3, and the discard tape in FIG.
It is sectional drawing which shows the state cut | disconnected along X 'line. FIG.
In the above, the disposal tape 8 comprises a fixed portion 9 and a free portion 10 continuous with the fixed portion 9, and the free portion 10 is folded at two places and laminated on the fixed portion 9 to form an intermediate portion 15 and an intermediate portion 1.
5 are formed on the upper surface of the locking member 14, and a total of 3
It is placed on the diaper in a folded state.

The discard tape 8 is attached to the opening 1 around the waist.
In the region where the elastic members 13 are arranged, the fixing portion 9 is bonded and fixed to the surface of the back sheet 5 by the fixing adhesive layer 17, and the knob portion 11 is formed at the tip of the locking portion 14. Further, a locking means 12 is provided adjacent to the knob 11. In this case, the locking means 1
Numeral 2 is made of, for example, a pressure-sensitive adhesive layer, is releasably joined to a release agent layer (not shown) provided on the surface of the fixing portion 9 facing the same, and contacts the back sheet 5 of the intermediate portion 15. The portion may be in a non-bonded state with the back sheet 5, or an adhesive layer may be disposed on a part of the intermediate portion 15 and a release agent layer (not shown) may be provided on the facing back sheet 5 surface.
And may be in a state of being peelably joined.

FIG. 5 shows a structure of the disposal tape 8 different from that of FIG. 4. The disposal tape 8 arranged on the pants-type disposable diaper 1 of FIG. 1 is taken along the line XX ′. It is sectional drawing which shows the state which cut | disconnected. In FIG. 5, the disposal tape 8 includes a fixing portion 9 adhered and fixed to the back sheet 5 by a fixing adhesive layer 17 and a free portion 10 continuous with the fixing portion 9. The free portion 10 further includes a fixing portion. 9
Intermediate part 15 connected at one end to intermediate part 1
5, the end of the fixing portion 9, the other end of the intermediate portion 15 and the end of the locking portion 14 are both fixed adhesive layers 17. The intermediate portion 15 is laminated on the fixing portion 9 and the intermediate portion 1
The locking portion 14 is laminated on the diaper 5, and is arranged in the diaper in a state of being folded in three as a whole.

The tip of the locking portion 14 has a knob 11
Is formed, and a locking means 12 is provided adjacent to the knob 11. In this case, the locking means 12 is made of, for example, an adhesive layer, and is detachably joined to a release agent layer (not shown) provided on the surface of the facing intermediate portion 15. May be in a non-joined state with the back sheet 5, or may be separated from the surface of the back sheet 5 by an adhesive layer (not shown) provided on a part of the intermediate portion 15. It may be in the state of being joined as much as possible.

FIG. 6 shows the structure of the disposal tape 8 different from those shown in FIGS. 3, 4 and 5, and the disposal tape 8 arranged on the pants-type disposable diaper 1 of FIG. −
It is sectional drawing which shows the state cut | disconnected along X 'line. FIG.
5, the disposal tape 8 has basically the same configuration as that shown in FIG. 5, but a pressure-sensitive adhesive layer 18 is provided on a portion of the end region of the intermediate portion 15 facing the back sheet 5. A release sheet 16 is adhered and fixed to the surface of the back sheet 5 facing this by a fixing adhesive layer 17,
The intermediate portion 15 is detachably joined to the backsheet 5 surface.

FIG. 7 shows a structure of the disposal tape 8 different from those shown in FIGS. 3, 4, 5 and 6, and the disposal tape disposed on the pants-type disposable diaper 1 of FIG. FIG. 8 is a cross-sectional view showing a state in which 8 is cut along the line XX ′.
In FIG. 7, the disposal tape 8 has basically the same configuration as that shown in FIG. 5, but an adhesive layer 18 is disposed on the entire surface of the intermediate portion 15 on the back sheet 5 side, Further, on the pressure-sensitive adhesive layer 18, except for a part of the region (the lower end in the drawing) facing the back sheet 5, the covering tape 19 is formed.
Thereby, the intermediate portion 15 is peelably joined to the back sheet 5 by the adhesive layer 18 in an end region where the covering tape 19 does not exist. In this case, by arranging a plurality of covering tapes 19 at intervals, several portions where the adhesive layer is exposed are provided between the tapes, and the joining state of the intermediate portion 15 and the back sheet 5 is adjusted. Is also good.

An adhesive layer is disposed on the entire surface of the locking portion 14 on the side of the intermediate portion 15 to form locking means 12, and a release agent is provided on the surface of the intermediate portion 15 facing this. A layer (not shown) is provided, and the locking portion 14 is peelably joined to the surface of the intermediate portion 15. A knob 11 is formed by providing a covering tape 20 at the tip of the locking portion 14.
Further, the knob 11 may be formed by folding the tip of the locking portion 14 toward the adhesive layer side. In FIGS. 5, 6, and 7, the fixing portion 9, the intermediate portion 15, and the locking portion 14 constituting the disposal tape 8 may be formed of the same material or different materials. Is also good. Also, when a discard tape is attached to the state shown in FIG. 2, the tape having the configuration shown in FIGS. 3 to 7 can be used.

FIG. 8 is a schematic perspective view showing the state in which the diaper is rolled when the side seam portion 6 of the pants-type disposable diaper is peeled off and discarded, and FIG. It is a schematic perspective view which shows the state which rounds the diaper which arrange | positioned the tape 8, and joins with the tape 8 for disposal. FIG. 10 is a schematic perspective view showing a state in which the diaper on which the disposal tape 8 is disposed as shown in FIG.

After using the pants-type disposable diaper of the present invention, as shown in FIG. 8, the side seams 6 of the front and rear bodies are peeled off, and the diaper is rolled in the longitudinal direction. As shown in FIG. 1, the free portion 10 of the disposal tape 8 is developed, and the locking means 12 provided on the locking portion 14 is provided.
The diaper can be easily and sanitarily disposed of by adhering to the back sheet 5 of the rounded diaper and fixing the diaper in a rolled state. After use, the pants-type disposable diaper can be discarded by peeling off the side seam portion of the disposable diaper and bonding the engaging portion of the discard tape 8 to the back sheet portion.

[0056]

According to the pants-type disposable diaper of the present invention, since the disposal tape is attached to the region where the elastic elastic member is disposed at the opening edge around the waist, it has an excellent wearing feeling. Do not get in the way when wearing pants, tights, etc.
Furthermore, the required length during disposal processing can be easily secured with a small amount of tape used, so it is possible to supply disposal tape at low cost and keep used diapers compact. Which can be disposed of hygienically.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a pants-type disposable diaper according to the present invention.

FIG. 2 is a perspective view showing the pants-type disposable diaper of the present invention, showing a disposition state of a disposal tape different from that of FIG. 1;

FIG. 3 is a cross-sectional view showing a state in which the disposal tape shown in FIG. 1 is cut along the line XX ′.

FIG. 4 is a sectional view showing an example of a disposal tape having a structure different from that of FIG. 3;

FIG. 5 is a sectional view showing an example of a disposal tape having a structure different from those of FIGS. 3 and 4;

FIG. 6 is a cross-sectional view showing an example of the disposal tape shown in FIG. 1 having a structure different from FIGS. 3, 4, and 5;

7 is a cross-sectional view showing an example of the disposal tape shown in FIG. 1 having a structure different from those in FIGS. 3 to 6;

FIG. 8 is a schematic perspective view showing a state in which the diaper is rolled when the diaper is disposed of.

FIG. 9 is a schematic perspective view showing a state in which the diaper shown in FIG. 1 is rolled and joined with a disposal tape.

FIG. 10 is a schematic perspective view showing a state in which the diaper shown in FIG. 2 is rolled and joined with a disposal tape.

[Explanation of symbols]

 1: Opening around waist 2: Opening around leg 3: Front body 4: Back body 5: Back sheet 6: Side seam 7: Top sheet 8: Discard tape 9: Fixing part 10: Free part 11: Knob part 12 : Locking means 13: elastic elastic member 14: locking part 15: intermediate part 16: release sheet 17: fixing adhesive layer 18: adhesive layer 19, 20: covering tape

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazushi Sakano 1-10-6 Shinonome, Koto-ku, Tokyo Oji Paper Co., Ltd. Shinonome Research Center (72) Inventor Miyuki Saisaka 1 Shinonome, Koto-ku, Tokyo No. 10-6 Oji Paper Co., Ltd. Shinonome Research Center F term (reference) 3B029 BD06 BD09 BD10 BD21 DA00 4C098 AA09 CC28 CE05

Claims (6)

[Claims] 1. A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these two sheets, and joining opposite side edges of a front body and a back body. To form an opening around the waist and a pair of leg openings,
In a pants-type disposable diaper in which a stretchable elastic member is arranged along the waist opening and a pair of leg openings, and a disposal tape is disposed on the back sheet surface of the back body, the disposal tape is It is composed of a fixed portion adhered and fixed to the back sheet surface and a free portion continuous from the fixed portion. The free portion is folded in the longitudinal direction. A pants-type disposable diaper, wherein a stop portion is formed, and the fixing portion is located in a region around the waist where the elastic member is arranged. 2. The waste tape is disposed so that its longitudinal direction is oriented in the vertical direction of the diaper, and has such a length that when the waste tape is extended, its locking means can be located beyond the opening around the waist. The pants-type disposable diaper according to claim 1, characterized in that there is a diaper. 3. The disposal tape according to claim 1, wherein the fixing portion is located near both side edges of the diaper, and the longitudinal direction thereof is arranged in the left-right direction of the diaper.
The pants-type disposable diaper according to claim 1. 4. The disposal tape according to claim 1, wherein the locking portion is detachably joined to the fixing portion or the free portion facing the locking portion by a locking means.
The pants-type disposable diaper according to any one of the above. 5. The waste tape is characterized in that at least a part of a free part except the locking part is peelably joined to at least a part of a fixing part and a back sheet surface facing each other. The pants-type disposable diaper according to any one of claims 1 to 4. 6. The tape for disposal has a bending rigidity per unit length of 2 × 10 ⁻³ N when bent along a straight line perpendicular to the direction of expansion and contraction of the elastic member at the opening around the waist. · cm and a ² / cm or less, and in any one of claims 1 to 5, the longitudinal direction of the tensile breaking load per tape unit width with respect to load, characterized in that it is 11.3N / cm or more The pants-type disposable diaper described.