JPH11244327A - Shorts-shaped disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispose of a used and rolled diaper by fixing in a folded condition. SOLUTION: In a disposable diaper 1 previously formed as a shorts-shape, an auxiliary tape 8 is assembled on a front surface of a rear surface sheet 7 of the diaper 1. A fixing section is formed on the auxiliary tape 8 is such a way that a center region is bonded fixing to the rear surface sheet 7. Regions of edge section positioned at both edges adjacent to the center region are respectively bent to the inside. Adhesive agent layer is formed at one region of the edge sections and an exfoliation agent layer is formed to overlap on a surface contacting the adhesive agent layer of other region of the edge section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pants-type disposable diaper to be used as a diaper for infants or incontinent persons, and more particularly, to disposal of contaminated pants-type disposable diapers after use. The present invention relates to a pants-type disposable diaper having a compact, clean and sanitary disposal treatment means, and having an auxiliary tape disposed on the pants-type disposable diaper, which does not interfere when the disposable diaper is attached.

[0002]

2. Description of the Related Art Conventionally, as a disposal treatment means of a pants-type disposable diaper, an adhesive application portion is provided at a free end of a joint portion on a waist side to prevent the excrement from leaking the diaper including the excrement. A method has been proposed in which the excrement is wrapped inside and discarded using a rounding and adhesive application section. (4
-117618 gazette). This is a tab extended on the waist side, but it is necessary to increase the width of the material forming the diaper in order to attach the tab, which increases the cost, and furthermore, the bonding area cannot be substantially widened. There was a problem, not always enough. Further, it has been proposed to use a stretchable elastic material for a tape used at the time of disposal. However, if the diaper at the time of disposal is rolled and the tape is stretched and fixed to the back sheet, the tape tends to come off due to the force of shrinking the tape, which is not sufficient.

In Japanese Utility Model Publication No. 8-10305,
There is disclosed a pants-type diaper in which one end of a strip-shaped tape fastener for fastening at the time of disposal is fixed and folded in the longitudinal direction thereof so as to be disposed at the center of the back side of the diaper. Since this tape fastener must have a length that can exceed the opening of the waist part of the pants-type diaper, it is folded and disposed so as not to interfere with the mounting of the diaper, which is simple and effective. Means
In addition to the purpose of fastening, an adhesive part is necessary to keep the tape fastener folded, and the adhesive part for fastening and the adhesive part to keep it folded are one side of the tape fastener. They must be provided separately on both sides, not on the same side. Therefore, in a state where the diaper is rolled up at the time of disposal and fastened with a tape fastener, the adhesive part on the opposite side facing the outer surface side of the diaper sticks to surrounding objects and other waste due to its adhesive strength. do it,
There was a risk that the tape fastener might come off accidentally, which was not enough. In addition, for the above-mentioned reason, since the adhesive portions are provided on both sides, the manufacturing process of the tape fastener is complicated.

[0004]

DISCLOSURE OF THE INVENTION The present invention overcomes the problems of the conventional pants-type disposable diaper provided with disposal means used at the time of disposal, does not become an obstacle when worn, When the product is rolled up in the direction and discarded, it can be rolled up quickly and simply and fixed, and it can be fixed without accidentally disengaging and opening the diaper, and a simple assistant for the manufacturing process An object of the present invention is to provide a pants-type disposable diaper to which a tape is attached.

[0005]

Means for Solving the Problems The present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these two sheets, and is provided on the abdomen of the wearer. In a pants-type disposable diaper in which the opposite side edges of the front body located on the back side and the back body located on the back side are joined to form a waist opening and a pair of leg openings, the front body of the diaper On the surface of the back sheet on the side or the back side, an auxiliary tape that is elongated in the longitudinal direction of the diaper (the direction from the waist opening to the crotch) is disposed, and the auxiliary tape has a central region in the longitudinal direction. The fixing portion is formed by being adhesively fixed to the back sheet, and when not in use, the end regions located at both ends in the longitudinal direction adjacent to the central region are folded inward and overlapped with each other on the fixing portion. And next to the fixed part At one end region of the pressure-sensitive adhesive layer is formed on the surface opposite to the surface contacting with the fixing portion,
A pants-type disposable diaper characterized in that a release agent layer is formed on a surface in contact with the pressure-sensitive adhesive layer in the other end region.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A pants-type disposable diaper according to the present invention is provided with an auxiliary tape which is elongated along the longitudinal direction of a diaper on the surface of a back sheet on the front body side or the back body side. The central region in the longitudinal direction is adhered and fixed to the back sheet to form a fixing portion, and end regions at both ends in the longitudinal direction adjacent to the fixing portion are folded inward and overlap each other on the fixing portion, In one end region adjacent to the fixing portion, an adhesive layer is formed on a surface opposite to a surface in contact with the fixing portion, and in the other end region, the adhesive layer is in contact with the adhesive layer. A release agent layer is formed on the surface.

[0007] The pants-type disposable diaper of the present invention having such a structure usually has an end region having a release agent layer of the auxiliary tape on the outer surface of the diaper when the diaper is mounted. At the time of disposal, first, the end region including the release agent layer of the auxiliary tape is picked up, so that the end region including the adhesive layer adjacent to the fixing portion comes out on the outer surface. Next, by picking up the end region including the pressure-sensitive adhesive layer and fastening the auxiliary tape to the back sheet so as to straddle the waist edge, the diaper can be rolled and fixed, easily and The diaper can be disposed of hygienically and discarded. At the time of disposal, there is no adhesive portion on the outer surface side of the diaper, so that the auxiliary tape does not accidentally come off. In addition, the auxiliary tape is folded when the diaper is attached, and the area for attachment to the diaper main body is small, so that the fit of the diaper is not impaired. In addition, the end area of the auxiliary tape in the present invention means a folded area including the end of the auxiliary tape, and the auxiliary tape of the present invention includes a fixing portion,
It is divided by a folding line into three portions, an end region having an adhesive layer and an end region having a release agent layer.

[0008] The auxiliary tape should be attached to the back sheet on the front body side or the back body side at a substantially central portion in the width direction of the diaper (a direction orthogonal to the longitudinal direction) in an elongated manner along the longitudinal direction. Is preferred. If the diaper is not located substantially at the center in the width direction, it is not easy to roll and fix the diaper at the time of disposal, or it is difficult to maintain the diaper in a rolled state.

The auxiliary tape may have knobs formed at both ends. When the knob portion is formed, the end region of the auxiliary tape can be easily picked up, so that the handling is simplified.

[0010] The material of the auxiliary tape may be in the form of a film or a non-woven fabric. For example, polyolefin resins such as polypropylene, polyethylene and polystyrene, polyester resins such as polyethylene terephthalate, polybutylene terephthalate and copolymers thereof, polyamide resins such as nylon 6, nylon 66, polyvinyl alcohol resins, polyacrylonitrile resins, poly Biodegradable resins such as lactic acid and fatty acid polyester are exemplified.

[0011] The basis weight of the auxiliary tape is preferably 8~150g / 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 there is no stiffness, and handling of the auxiliary tape is inconvenient. On the other hand, if the grammage exceeds 150 g / m ² , the auxiliary tape becomes hard and the fit becomes poor when the diaper is attached, which is not suitable.

The length of the fixing portion of the auxiliary tape is 1 cm to 8 cm.
cm. If it is less than 1 cm, the auxiliary tape cannot be firmly fixed to the back sheet of the diaper. Conversely, if it exceeds 8 cm, it will be in the way of mounting and unsuitable.

The length of the end region of the auxiliary tape having the pressure-sensitive adhesive layer is equal to or less than the length of the fixed portion, and is preferably 5 to 8 cm. If it is less than 5 cm, the end region is too short, so that it is difficult to roll the diaper and fix it over the waist opening. The upper limit is preferably 8 cm or less in consideration of folding since the preferable length of the fixing portion is 8 cm or less. The length of the end region of the auxiliary tape having the release agent layer is preferably 1.5 to 8 cm. If it is less than 1.5 cm, the end region is too short, making it difficult to grasp the end. On the other hand, if it exceeds 8 cm, it is undesired because it interferes with mounting. The end regions need not be the same length, but the length relationship between the end regions needs to take into account that the release agent layer covers the entire area of the pressure-sensitive adhesive layer.

The width of the auxiliary tape is preferably 1 to 4 cm. If it is less than 1 cm, the auxiliary tape is too thin and inconvenient to handle. On the other hand, if it exceeds 4 cm, the width is too wide to be in the way when worn.

The auxiliary tape has a pressure-sensitive adhesive layer formed at one end region adjacent to a central region which is a fixing portion. The material of the pressure-sensitive adhesive layer is not particularly limited, as long as it can be fixed to the back sheet without slipping using a known adhesive or the like. When the diaper is used, the whole area of the pressure-sensitive adhesive layer needs to be covered with the release agent layer. In addition, the adhesive layer,
It may be formed on the entire end region adjacent to the fixing portion, or may be formed on a part of the end region.

The pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer of the present invention may be rubber-based or acrylic-based. For example, styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, acrylic ester, vinyl acetate An adhesive containing an ethylene-vinyl acetate copolymer or the like as a main component is exemplified.

Examples of the release agent forming the release agent layer of the present invention include silicone-based, non-silicone-based resins such as long-chain alkyls, and fluorine-based resins.

The auxiliary tape is provided with a fixing adhesive layer for bonding and fixing to the back sheet. The material of the fixing adhesive layer is not particularly limited, but may be a known adhesive or the like, as long as it can be fixed to the back sheet without slipping. No problem.

The auxiliary tape of the present invention has a pressure-sensitive adhesive layer and a fixed adhesive layer on the same surface when not folded. For this reason, the production method of the auxiliary tape is simplified, and the production cost can be reduced.

[0020]

EXAMPLES The diaper according to the present invention will now be described more specifically with reference to examples, but the present invention is not limited to these examples. FIG. 1 is a perspective view of a pants-type disposable diaper of the present invention. In FIG. 1, a pants-type disposable diaper 1 according to the present invention includes
It has an opening 3 around the waist, and a front body 4 and a back body 5 are adhesively closed by a side seam 6, and a substantially central portion in the width direction of the diaper is provided on a back sheet 7 forming an outer surface of the back body 5. Along the longitudinal direction (a direction from the waist opening 3 to the crotch 12), the auxiliary tape 8 is disposed.

FIG. 2 is a sectional view along the longitudinal direction of the diaper of the present invention, showing a state in which the auxiliary tape 8 is folded and laminated on the back sheet 7. In FIG. 2, the auxiliary tape 8 includes a fixed adhesive layer 9 provided on a surface facing the back sheet 7 in a central region 13 in the longitudinal direction of the auxiliary tape 8.
With this, it is bonded and fixed to the back sheet 7. The area where the back sheet 7 and the auxiliary tape 8 are fixed is referred to as the fixing portion 1.
3, the adhesive layer 10 is provided on one end region 14 adjacent to the fixing portion and is folded inward toward the fixing portion, and the release agent layer 1 is provided on the other end region 15.
1 is provided and folded inward toward the fixing portion, and both end regions are overlapped so that the release agent layer is in contact with the pressure-sensitive adhesive layer.

FIG. 3 is a cross-sectional view of the diaper of the present invention, which is different from FIG. 2, and shows a state in which the auxiliary tape 8 is laminated on the back sheet 7. 3, the pressure-sensitive adhesive layer 10 is provided only on a part of the end region 14 adjacent to the fixing portion, and the end region 15 including the release agent layer 11 is smaller than the fixing portion. Is different from FIG.

FIG. 4 shows a state in which the end region having the release agent layer 11 adjacent to the fixing portion of the auxiliary tape 8 shown in FIG. 2 is picked up and peeled off.

FIG. 5 shows a state in which the other end region of the auxiliary tape 8 shown in FIG. 4 having the adhesive layer 10 adjacent to the fixing portion is further picked up. The diaper can be rolled and fixed by the adhesive layer 10, and the diaper can be easily and sanitarily used and discarded.

FIG. 6 is a perspective view showing a state in which the pants-type disposable diaper of the present invention is rolled and fixed using the auxiliary tape shown in FIG. A used diaper containing excrement such as loose stool is rolled in the longitudinal direction, closed so as to wrap the excrement inside the diaper, and is fixed by an auxiliary tape 8 so as not to open it.

[0026]

The auxiliary tape in the pants-type disposable diaper of the present invention has a size that does not disturb the wearing of the diaper, does not impair the fit, and is easy and quick to be rolled in the longitudinal direction of the diaper when discarding. It can be rolled and fixed so that the diaper does not open. In addition, there is no adhesive layer on the outer surface of the diaper when the diaper is rolled,
It does not happen that the adhesive is accidentally adhered to the surrounding objects and the fixing is released. Further, since the pressure-sensitive adhesive layer and the fixed adhesive layer are formed on the same surface of the auxiliary tape at the time of manufacture, the manufacturing process of the auxiliary tape is simple and easy to manufacture.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view along a longitudinal direction of the diaper of the present invention, showing a state in which an auxiliary tape is laminated on a back sheet.

3 is a cross-sectional view along a longitudinal direction of the diaper of the present invention in an example different from FIG. 2, showing a state in which an auxiliary tape is laminated on a back sheet.

FIG. 4 is a cross-sectional view along the longitudinal direction of the diaper, showing a state where an end region including a release agent layer of the auxiliary tape shown in FIG. 2 is picked up;

FIG. 5 is a cross-sectional view along the longitudinal direction of the diaper showing a state where both end regions adjacent to the fixing portion of the auxiliary tape shown in FIG. 2 are picked up;

6 is a perspective view showing a state in which a diaper that has been rolled in the longitudinal direction is fixed by the auxiliary tape shown in FIG. 3;

[Explanation of symbols]

 1. Pants-type disposable diaper 2. Leg opening 3. Waist opening 4. Front body 5. Back body 6. Side seam 7. Back sheet 8. Auxiliary tape 9. Fixed adhesive layer 10. Adhesive Layer 11. Release agent layer 12. Crotch 13. Central area of auxiliary tape (fixed part) 14. End area of auxiliary tape having adhesive layer 15. End area of auxiliary tape having release agent layer

Claims (1)

[Claims] 1. A front body and a back side which are composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these two sheets, and are located on the abdomen of the wearer. In a pants-type disposable diaper in which the opposite side edges of the back body are joined to form a waist opening and a pair of leg openings, the back sheet on the front body side or the back body side of the diaper On the front surface, an elongated auxiliary tape is disposed in the longitudinal direction of the diaper, and the auxiliary tape has a fixed area formed by bonding a central area in the longitudinal direction to the back sheet, and is adjacent to the central area. End regions located at both ends in the longitudinal direction are folded inward and overlap each other on the fixing portion, and further,
In one end region adjacent to the fixing portion, an adhesive layer is formed on the surface opposite to the surface in contact with the fixing portion, and in the other end region, peeling is performed on the surface in contact with the adhesive layer. A pants-type disposable diaper characterized by having an agent layer formed thereon.