JP3039867U - Disposable diapers - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a disposable diaper with a fastening tape using a mechanical surface fastener, capable of maintaining a reliable engagement state, detachable, and excellent in adhesion. It is an issue. SOLUTION: In a disposable diaper that is formed into a pants type by using a fastening tape, a fastening tape 5 having hook members 5a of mechanical surface fasteners is disposed on both side edges in the width direction on the back side of the diaper, and the abdominal side. A loop member 6a capable of detachably locking the hook member is adhered to the base material 6b on the outermost layer of the locking portion 6
Is provided, and the base material 6b of the locking portion is formed to be expandable.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a disposable diaper in which both sides of the waist are fastened with fastening tape at the time of wearing to form a pants-type disposable diaper. Specifically, it is well adhered to wearers of various sizes, However, it relates to disposable diapers for adults or children that can be replaced.

[0002]

[Prior art]

 Disposable diapers are made of crushed pulp, super absorbent resin, heat-melting fiber, etc. between a liquid-impermeable back sheet (plastic sheet) and a liquid-permeable top sheet (nonwoven fabric made of synthetic fiber). It is configured by loading an absorber. Fig. 4 shows a general planar shape of a disposable diaper that is formed into a pants-type when worn using a fastening tape. FIG. 4 shows the back sheet side (the side not contacting the body) of the diaper so that the position of the tape can be seen. The disposable diaper D has a substantially hourglass shape, and ears E are formed on the left and right sides of the abdomen side F and the back side B of the diaper to cover both sides of the waist when the diaper is worn. Is provided with a pair of fastening tapes 50 on the left and right. An adhesive is applied to the fastening tape 50 so that it can be formed into a pants type by adhering it to the front tape 60 provided on the back sheet 20 on the abdominal side F when worn.

In the vicinity of the abdomen side edge and the back side edge of the diaper, band-shaped elastic bodies 30, 30 formed of urethane foam or the like are provided between the top sheet and the back sheet or on one of them. To form waist gathers, leg notches K are formed on the left and right sides of the center, and the thread-like elastic body 40 is attached in an extended state between the top sheet and the back sheet. It becomes leg gather after it is formed into pants.

Further, on both sides of the upper surface of the top sheet, a rising gather (an elastic body in a stretched state is attached to the rising end is attached to the rising end) is arranged in the longitudinal direction near the center of the elastic body 40. There is also a structure in which a pocket for preventing urine leakage is formed.

The frontal tape 60 has a relatively rigid plastic sheet firmly adhered to the back sheet so that the back sheet of the diaper is not torn when the fastening tape 50 is repeatedly attached and detached. Is configured. A pair of fastening tapes 50 are sufficient for a disposable diaper for children, but a plurality of fastening tapes 50 are provided for an adult to ensure a firm and firm pant-type shape retention.

As the fastening tape 30, other than the one coated with an adhesive, one using a mechanical surface fastener is also considered. For example, in Japanese Unexamined Patent Publication No. Hei 1-162802, whichever hook member or loop member that constitutes a hook-and-loop fastener is attached to a fastening tape, and which is detachably engaged with this hook member or loop member, There is disclosed a configuration in which the diaper can be changed over and over by attaching and removing the diaper over a large area on the back sheet on the abdomen side.

[0007]

[Problems to be solved by the device]

 When the hook and loop fastener is used for locking the diaper, it has the advantage that it can be put on and taken off as many times as desired, but conversely, when exercising or sleeping, fibrous materials such as clothing and bedding and hook members can be used. However, there was a problem in that the hooks and loops in the diaper were released from the engaged state due to the entanglement of the diapers, and the diaper came off.

Further, since the hook-and-loop is attached to the base material having high rigidity and the hook-and-loop fastener is formed so as not to be able to expand and contract, the hook-and-loop fastener is particularly widely arranged on the abdomen side, so that the abdomen to the wearer can be reduced. There was a problem that the adhesiveness on the side deteriorates. Therefore, it is an object of the present invention to provide a disposable diaper that can maintain a reliable and firm engagement state, is detachable, and has excellent adhesion.

[0009]

[Means for Solving the Problems]

 The present invention, which has achieved the above object, provides a disposable diaper, which is formed into a pants-like shape by using a fastening tape, in which a fastening tape having a hook member of a mechanical surface fastener is arranged on both lateral edges of the diaper on the back side. On the outermost layer on the abdomen side, there is provided a locking portion in which a loop member capable of detachably locking the fastening tape is attached to a base material, and the base of the locking portion. The main point is that the material is formed so that it can expand and contract. The fastening tape is also preferably formed so as to be stretchable.

[0010]

[Embodiment of the invention]

 According to the present invention, since the locking portion capable of detachably locking the fastening tape is configured by attaching the loop member to the stretchable base material, even when the locking portion is widely arranged on the abdominal side. Elasticity is given to the abdomen, and adhesion to the wearer is significantly improved. Also, since the locking part that has the loop has an expansion and contraction force, after the hook is hooked on the loop, the force of the locking part trying to contract toward the center of the abdomen strengthens the engaged state of the hook and the loop. As a result, this engagement state cannot be disengaged during exercise or sleeping. When the fastening tape is formed to be expandable and contractible, the engagement state can be further firmly held. In addition, the fastening tape and the locking part can be repeatedly attached and removed, and the diaper can be changed many times. Therefore, it is possible to use the diaper of the present invention together with an auxiliary pad or the like, and replace only these auxiliary pads in the case of light incontinence or after a small amount of urination.

FIG. 1 is a perspective explanatory view showing one embodiment of the present invention, and FIG. 2 is a partially cutaway development explanatory view seen from the top sheet 2 side of the disposable diaper shown in FIG. The disposable diaper 1 is composed of a water-permeable top sheet 2, a water-impermeable back sheet 3, and an absorbent body 4 disposed inside both sheets as basic members. The absorber 2 is formed into a rectangular or substantially hourglass shape by mixing crushed pulp, a super absorbent resin and the like, and is covered with a thin paper if necessary. As the water-impermeable back sheet 3, a sheet (may have fine pores) made of polyolefin or the like is used, and as the water-permeable sheet 2, a synthetic fiber non-woven fabric or the like is used.

In order to improve the adhesion around the waist, several thread-like elastic bodies 7 made of polyurethane or rubber are additionally provided near the waist to form a waist gather. Similarly, several thread-like elastic bodies 8 are additionally provided near the legs to form leg gathers. These elastic bodies are bonded between the top sheet and the back sheet.

Furthermore, a pair of fastening tapes 5 are provided on both widthwise edges of the back side of the diaper. In the illustrated example, the fastening tape 5 is composed of a hook member 5a and a tape base 5b to which the hook member 5a is attached. The root side (diaper side) of the fastening tape 5 is adhered to either the backsheet 3 or the topsheet 2, or is sandwiched between the two. The hook member 5a may be made of polyolefin resin such as polyethylene or polypropylene, or polyamide, polyester or the like. The shape of the hook is not particularly limited. For example, as shown in FIGS. 3 (a) to 3 (d), a hook having a cross section of I-shape, inverted L-shape, inverted J-shape, so-called mushroom shape, or the like forms a loop. It is preferable because it is easily caught and does not give the skin an extremely irritating sensation. When the tape base body 5b of the fastening tape or the base portion 51 of the hook member is formed to be expandable and contractible, the engaging state of the hook and the loop is more firmly combined with the effect produced by making the locking part expandable and contractable, which will be described later. become. The hook member 5a may be attached to the entire area of the fastening tape 5, and the tape base 5b may be omitted, and the fastening tape may be formed only by the hook member 5a.

On the other hand, on the outermost backsheet 3 on the abdomen side of the diaper, the locking portion 6 is arranged in a wide range. As shown in the cross-sectional view of FIG. 4, the locking portion 6 is formed by attaching a loop member 6a formed of a woven fabric or a knitted fabric or the like to a base material 6b. In the present invention, the base material 6b needs to be made of a stretchable material. Specific examples of the material for the base material include rubber sheets, woven and knitted fabrics woven or woven with stretchable fibers, laminates of such woven and nonwoven fabrics, nonwoven fabrics with stretchable fibers, and the like. Can be used. The sticking is performed by a known method such as using a hot melt adhesive. It is preferable to apply the adhesive intermittently so as not to impede the stretchability of the base material, for example, applying a linear streak in the longitudinal direction of the diaper, or applying the adhesive in a mesh or dot shape. Is recommended. The size of the engaging portion 6 is arbitrary, but it is preferable that the engaging portion 6 has substantially the same width as the diaper as shown in FIG.

In addition to the structure shown in FIG. 1, for example, rising gathers (not shown) in which stretched elastic bodies are attached to a water repellent non-woven fabric are formed on the upper surface side of the top sheet 2 on the left and right sides. Then, urine leakage from the legs can be reliably prevented. In addition, the back sheet is composed of two non-woven fabrics, and instead of the absorbent body 4, a pad-like material consisting of a water-impermeable sheet and a water-permeable sheet and an absorption mat interposed therebetween is used as the back sheet. It may be attached. At this time, the thread-like elastic body or the fastening tape may be sandwiched between two non-woven fabrics for the back sheet.

When the fastening tape 5 is locked to the locking portion 6 when the diaper of the present invention is worn, since the locking portion 6 has elasticity, the locking portion 6 is located at the center of the abdomen. Try to shrink to. For example, FIG. 5 shows a view in which the wearer looks at the right side of the wearer wearing the diaper from the upper side (therefore, the figure shows the wearer's abdomen). When the fastening tape having the inverted J-shaped hook member 5a as described above is used, the hook member 5a can be vertically pierced into the loop member 6a only by locking the fastening tape 5 to the locking portion 6. Not all hooks can pass completely through the loop. However, in the present invention, since the loop base material 6b is formed to be expandable and contractible, the base material 6b tries to shrink in the direction of the white arrow in the figure. Therefore, the hook can enter into the loop and be securely engaged. If the tape base body 5b to which the hook member 5a is attached can be expanded and contracted, the base body 5b tends to shrink in the direction of the black arrow in the lower part of the figure, so that the hook and loop engagement state can be made more reliable and firm. Become.

In the present invention, since the abdomen-side engaging portion 6 is formed to be expandable and contractible, the abdomen has excellent adhesiveness without disposing another elastic member. In the present invention, the fastening tapes may not be a pair but may be two or more pairs, and either the left or right ear side edge of the diaper may be joined in advance.

The disposable diaper of the present invention can be used for children, of course, but it is recommended that the disposable diaper be formed and applied to an adult size. For adults, it is economical to use a small amount of urine, etc. by using inexpensive auxiliary sheets and auxiliary pads together and replacing these auxiliary sheets. Also, since the disposable diaper of the present invention has excellent adhesion, the diaper does not swell even if an auxiliary seat pad is used together and the appearance is not deteriorated. It is also convenient for replacing pads and the like.

[0019]

[Effect of the invention]

 In the present invention, since the base material of the locking portion is configured to be expandable and contractible, the hook and loop engagement is different from the conventional disposable diaper with a fastening tape using an adhesive or a diaper using a mechanical surface fastener. We were able to ensure the integrity. Therefore, the inconvenience that the hook and the loop are disengaged during exercise or during bedtime and the diaper is displaced cannot occur. Further, since the locking portion capable of expanding and contracting in a wide range is arranged on the abdomen side of the diaper, the effect of improving the adhesion on the abdomen side is also exerted. The present invention has made it possible to provide a disposable diaper that is easy to put on and take off and has a high fit, not only for children but also for adults.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a typical embodiment of the disposable diaper of the present invention.

2 is a partially cutaway development explanatory view of FIG. 1. FIG.

FIG. 3 is an explanatory cross-sectional view showing the shape of a hook member.

FIG. 4 is a cross-sectional explanatory view showing a shape of a locking portion.

FIG. 5 is an enlarged cross-sectional explanatory view of an essential part for explaining a locked state.

FIG. 6 is a plan view showing a conventional disposable diaper.

[Explanation of symbols]

 1 Disposable diapers 2 Topsheet 3 Backsheet 4 Absorber 5 Fastening tape 5a Hook member 5b Tape base 6 Locking part 6a Loop member 6b Base material 7 Elastic body for waist gather 8 Elastic body for leg gather 30 Belt elastic body 60 Frontal tape E Ear K Notch for leg

Claims (2)

[Utility model registration claims] 1. A disposable diaper, which is formed into a pant shape by using the fastening tape, is provided with fastening tapes having hook members of mechanical fasteners on both side edges in the width direction on the back side of the diaper. On the outermost layer, there is disposed a locking portion in which a loop member capable of detachably locking the hook member is attached to a base material, and the base material of the locking portion is formed to be expandable and contractible. Disposable diaper characterized by having. 2. The disposable diaper according to claim 1, wherein the fastening tape is formed so as to be expandable and contractible.