JP3021190U - Disposable pants - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide disposable pants having a folding structure that can be folded accurately and can be stored in a compact state in a packaging bag. SOLUTION: The disposable pants in which a front part F and a rear part B are overlapped and joined at the side edges of the left and right sides, and one of the left and right ears S2 is housed between the front part and the rear part. The other ear S1 is folded so as to be folded back to the outside of the front portion or the rear portion, or the left and right ears are folded so as to be folded outside of the front portion or the rear portion. They are pants.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to disposable pants for children or adults provided with a torso opening and a pair of leg openings. More specifically, when storing a plurality of disposable pants in a packaging bag, the pants are aligned in a compact state. The present invention relates to disposable parts that are shaped so that they can be stored.

[0002]

[Prior art]

 FIG. 5 is a front explanatory view showing an example of disposable pants. This disposable pants P is formed by folding a laminated body, which has a backsheet 1, an absorber 5 and a topsheet 2 as main constituent members, and which is formed into a substantially hourglass shape, and folds the laminated body in two in the front and back, and bond both side edges at the joining lines 4 and 4. Then, the disposable pants P have a body opening at the upper part and a pair of leg openings at the left and right sides of the lower part.

The backsheet 1 is generally a laminated sheet including at least one leakproof sheet made of a liquid-impermeable sheet, and the backsheet 1 is formed on the periphery of the body opening and the leg openings. Are provided with elastic bodies (a plurality of elastic threads, strip-shaped tape materials, etc.) 3a and 3c in an extended state, respectively, to form a gather portion that adheres to the skin. At the lower part of the elastic body 3a, another elastic body 3b (a plurality of elastic threads in the illustrated example) is attached in parallel with the elastic body 3a, and a structure for further enhancing the adhesion of the body is also adopted. . The absorbent body 5 is a mixture of pulp fibers, super absorbent resin, thermoplastic resin powders and fibers, and heat-treated to improve the shape retention of the entire absorbent body 5 and reduce its thickness. A rectangular shape is generally used. Further, since the top sheet 2 guides liquid such as urine to the absorbent body 5, a liquid-permeable synthetic fiber non-woven fabric is used, and the upper surface side portion thereof is for the purpose of preventing leakage of urine at the base of the leg. A pair of rising gathers (not shown) are provided.

By the way, when a plurality of such disposable pants P are stacked and stored in a packaging bag for sale, the width and the length of the packaging bag are kept in the substantially pentagonal expanded state as shown in FIG. Becomes bigger. Further, since the outer shape of the packaging bag is distorted and it is difficult to handle, a structure in which disposable pants as shown in FIG. 6 is folded has been devised (Japanese Utility Model Laid-Open No. 4-828). .

The folding structure disclosed in this publication pushes the ears S 1, S of the disposable pants P shown in FIG. 5 between the front portion F and the rear portion B of the pants P at the positions of the chain lines K, K. Thus, the ears S, S are housed between the front part F and the rear part B of the pants P and folded so as to form a substantially rectangular shape as a whole. In this folding structure, since the absorbent body 5, which is the thickest part of the pants P, is not folded, it does not become bulky even if a plurality of pants P are stacked, and the planar area of the disposable pants can be reduced. There are advantages.

[0006]

[Problems to be solved by the device]

 However, in order to adopt the above-mentioned folding structure in a general continuous manufacturing method of actual disposable pants, there is a problem that high-speed production must be sacrificed. That is, in the step of joining both side edges of the pants in various continuous manufacturing processes, the adjacent pants P are arranged such that the joining line 4 is orthogonal to the running method and are continuously running (flowing sideways). However, it is very difficult to perform the folding step shown in FIG. 6 by this lateral flow method.

In the case of the lateral flow method, the pair of ears formed on the left and right of the disposable pants correspond to the front and the rear in the running direction of the manufactured pants. In order to fold the ears as shown in Fig. 6 without stopping the running of the disposable pants, the positions of the ears of the disposable pants that run at high speed (more than 300 per minute) should be accurately captured. It was necessary to support and spread the front and back of the pants separately and press the ears of the pants accurately. In the front part of the running direction, the above-described folding operation must be performed at a speed higher than that of the disposable pants or at a synchronized speed, and accurate folding is not possible in a real mechanical device. It was For example, in a machine with a structure in which a rod-shaped guide is advanced and retracted toward a running disposable pants to fold it, while the operation of pushing the ears between the front part and the rear part of the pants is performed, the next adjacent disposable pants is It will interfere and the folding cannot be done correctly. Therefore, in order to perform the folding process accurately, there is no choice but to produce at a low speed or to sacrifice high-speed productivity by using a separate folding process line.

If folding is not performed correctly, one of the ears S of the pants may be folded halfway into an irregular shape and may not be correctly accommodated between the front and back of the pants. However, many items that are not folded and that protrude to the outside are often produced, so even if they are stored in a packaging bag, they may partially bulge abnormally. That is, as shown in FIG. 7, when a predetermined number of disposable pants P are stored in a packaging bag (shown by a chain line) D made of a rectangular parallelepiped-shaped plastic sheet, as a result of stacking a plurality of distorted folded parts Sf, A problem that a part of the bag D is abnormally inflated and the appearance is irregular is caused (note that the symbol Sa in FIG. 7 indicates a normally folded part). Therefore, it is an object of the present invention to provide disposable pants that can be accurately folded even when manufactured at high speed and can be stored in a packaging bag in a neat shape.

[0009]

[Means for Solving the Problems]

 The disposable pants according to the present invention are disposable pants in which the front part and the rear part are overlapped with each other and joined at the side edges of the left and right ears, and one of the left and right ears is located between the front part and the rear part. The first device has a structure in which the other ear is folded so as to be folded back to the outside of the front or the rear, and the left and right ears are both outside of the front or the rear. The second device is a structure that is folded so as to be folded back. The “ears” of the disposable pants in the present invention are the parts corresponding to both sides of the pad where the absorber is not interposed in the laminated structure of the back sheet and the top sheet, and the thickness of the ears is It is thinner than the absorber. Therefore, the thickness of the disposable pants does not increase when the invention is folded.

In the first invention, one of the left and right ears has a shape-preserving property and is thick between the front and rear absorbers (folded back and forth) that are thick, to be precise. It is accommodated between the top sheets arranged on the upper surface of the absorbent body, and the other ear portion is folded back toward the outside of the disposable pants so that the back sheets face each other. At this time, the folded back virtual line is formed up and down so as to pass slightly outside the side edge of the absorber laminated on the lower side of the back sheet.

On the other hand, in the second invention, the left and right ears of the disposable pants are folded back toward the outside of the front part or the rear part of the pants so that the backsheets face each other regardless of the foldback virtual line. In this case, both left and right ears are folded back to the outside of the front of the pants, both left and right ears are folded back to the outside of the rear of the pants, or one of the left and right is on the front of the pants and the other is Includes a configuration that folds back to the rear side.

[0012]

[Embodiment of device]

 FIG. 1 is an explanatory view showing an embodiment of the first invention of the present invention, showing a state in which the substantially pentagonal disposable pants P shown in FIG. 5 are folded. One of the ears S2 of the disposable pants P is housed between the absorbent bodies 5 which are continuously located on the front portion F and the rear portion B of the pants (to be precise, between the front sheet 2 folded in front and rear). . The other ear portion S1 is folded back to the outside of the front portion F of the disposable pants, and is folded in two so that the back sheet 1 of the ear portion S1 and the back sheet 1 laminated on the absorbent body 5 face each other. The ear portion S1 may be folded back to the outside of the rear portion B.

The absorbent body 5 is not folded by this folding, only the left and right ears S1 and S2 are folded to the center of the pants, and the planar shape thereof is formed into a substantially square shape. At this time, the total thickness of the folded disposable pants P is increased by the thickness of the ears S1 and S2 at the center of the pants as compared with the state of FIG. Since I just stacked multiple thin sheets, the thickness hardly increases.

FIG. 4 is a perspective explanatory view showing an example of a device for realizing the folding structure shown in FIG. The disposable pants P, which have already been joined at both sides and separated from each other, move on the running belt 11 in the direction of the white arrow, and move back and forth in the direction of arrow with respect to the ear S2 corresponding to the downstream side in the running direction. By the moving folding guide rod 12, the ear portion S2 is folded between the front portion and the rear portion of the pants to be stored. At this time, it is desirable that the front part and the rear part of the disposable pants P 1 are supported by a supporting device (not shown) with a certain space in the vertical direction.

Further, a pair of guide rolls 14 and 15 having a gap are arranged in parallel on the upstream side of the traveling belt 11 in the traveling direction, and a presser bar 13 which moves forward and backward is disposed on the front side of the guide rolls 14 and 15 for traveling. The front ear S1 of the moving disposable pants P is first placed on the peripheral surface of the guide roll 14 to be slightly deformed, and the presser bar 13 is further advanced while pressing the base portion of the ear S1 to move the ear S1. If it is folded upward and sent into the gap between the guide rolls 14 and 15 for folding, the ears S2 are folded inside the pants, and the ears S1 are folded outside the pants to have the folding structure shown in FIG. You can The foldable pants of the present invention are easier to manufacture than the conventional foldable pants in which both ears are pushed into the center of the pants, and can be folded accurately even at high-speed production. . The method and device for achieving the folding structure of the present invention are not limited to this example, and known means and devices including manual folding may be used.

FIG. 2 is an explanatory view showing an embodiment of the second invention, in which both left and right ears S1 and S2 of the disposable pants P are folded back to the pants front portion F side. That is, S1 and S2 are folded so that the backsheet 1 of the ears S1 and S2 and the backsheet 1 of the absorbent body 5 face each other. The ears S1 and S2 may both be folded back to the outside of the rear part B of the pants, or one ear S1 may be folded back to the outside of the back B as shown in FIG. May be folded back to the front portion F side (in this example, the left and right configurations may be reversed). As an example of a folding device for realizing this folding structure, a conventionally known device for folding a flat disposable diaper, a napkin, or the like into three can be cited. Further, a method of rotating the parts P in a vertical direction by 90 ° and then folding both ears along the guides is simple and suitable for high-speed production.

The individual disposable pants P folded as shown in FIG. 2 have the same plane shape and thickness as those of the first embodiment shown in FIG. 1, and have the same width as that of the absorbent body 5. The folded disposable pants can be sent to the next packaging process.

[0018]

[Effect of device]

 The individual disposable pants of the present invention have a structure in which the ears of the pants are surely folded to the center of the pants, so that the planar shape of the pants is made into a compact, substantially rectangular shape having almost the same width as the absorbent body. I was able to hold it accurately. Therefore, even if a predetermined number of disposable panties are stacked, a part of them does not bulge or project abnormally, and they can be smoothly stored in a rectangular parallelepiped packaging bag. In addition, the packaging bags that have already been stored will not be deformed into a distorted shape, and will provide high-quality products in beautiful packaging.

[Brief description of drawings]

FIG. 1 is a front view and a cross-sectional explanatory view showing an embodiment of a folded disposable pants of the present invention.

FIG. 2 is a front view and a cross-sectional explanatory view showing another embodiment of the folded disposable pants of the present invention.

FIG. 3 is a sectional view showing another embodiment of the folded disposable pants of the present invention.

FIG. 4 is an explanatory perspective view showing an example of a folding device for disposable pants of the present invention.

FIG. 5 is a front view and a cross-sectional explanatory view of disposable pants.

FIG. 6 is a front view and a cross-sectional explanatory view showing a conventional folded disposable pants.

FIG. 7 is an explanatory view showing a storage form of conventional disposable pants.

[Explanation of symbols]

 1 Back Sheet 2 Top Sheet 3a, 3b, 3c Elastic Body 4 Bonding Line 5 Absorber P Disposable Pants S, S1, S2 Ears

Claims (2)

[Scope of utility model registration request] 1. Disposable pants in which a front part and a rear part are overlapped with each other and joined at the side edges of the left and right side ears, and one of the left and right ears is housed between the front part and the rear part. Disposable pants, wherein the other ear part is folded back to the outside of the front part or the rear part. 2. The disposable pants in which the front part and the rear part are overlapped and joined at the side edges of the left and right sides, and the left and right ears are folded back to the outside of the front part or the rear part. Disposable pants characterized by that.