JPH03176052A - Disposable diaper - Google Patents

Abstract

PURPOSE:To reduce material cost with a less width of stock by providing a slit for forming leg holes askew toward respective side ends from a point separated properly from a vertical center line of a front panel. CONSTITUTION:A right side 12 is arranged askew toward a right side 5 from a point separated to the right from a vertical center line 11 to form a right leg hole 8 and a left slit 13 arranged askew toward a left side 6 from a point separated to the left from the vertical center line 11 to form a left leg hole 9 in a diaper body stock 10. Thus, a width of the diaper body stock 10 is made less than that of the conventional type.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to disposable diapers.
a water-permeable top sheet in contact with the wearer's skin; a water-impermeable back sheet located on the opposite side of the top sheet;
Both sides of the front body and both sides of the back body of the pants main body, which consists of the water-absorbent core interposed between the two sheets, are adhered to form an opening for the waist area at the top and leg holes at the left and right sides at the bottom. This invention relates to an integrated pants-type disposable diaper.

[Prior Art] Conventional integrated pants-type disposable diapers of this type have two sides of the front body and both sides of the back body, as described in, for example, Japanese Unexamined Patent Publication No. 82-21803. They are glued together to form an opening for the waist area at the top and leg holes on the left and right sides of the bottom. As mentioned above, this integrated disposable diaper has both sides of the front body and both measuring parts of the back body glued together, so it has the advantage of being easier to put on than conventional tape-type disposable diapers. have.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional integrated disposable diaper, the cutting line (slit) for forming the leg holes is cut from a point appropriately distanced laterally from the vertical center line of the pants body. , since it is provided directly horizontally toward the side edge, the required length of the cutting line directly affects the width dimension of the original material for the pants body, and therefore, it is possible to reduce the width dimension. The problem was that it was impossible to do so, and there was a huge waste of materials.

The present invention aims to solve the above problems. That is, an object of the present invention is to provide a disposable diaper in which the width dimension of the original material for the pants body can be made smaller than in the past, and a sufficient length of the slits for forming leg holes can be obtained. It is.

[Means for Solving the Three Problems] In order to achieve the above object, the disposable diaper of the present invention includes a water-permeable top sheet that comes into contact with the wearer's skin, and a non-woven material located on the opposite side of the top sheet. Both sides of the front body and both sides of the back body of the pants body, which consists of a water-permeable back sheet and a water-absorbent core interposed between the two sheets, are glued together to create an opening for the waist area above. In a pant-type disposable diaper that is integrated by forming leg holes on the lower left and right sides, the diapers are provided diagonally from a location appropriately away from the vertical center line of the front body toward the respective side ends. It is equipped with slits for forming leg holes.

[Function 2] According to the present invention, the slits for forming the leg holes are not provided directly horizontally toward the side ends, but are provided diagonally in the front body, so that the length of the slits is , the cosine (CO5θ) of the oblique angle (θ) of the slit with respect to the transverse direction will affect the width of the pants body original material, and therefore, the width of the pants body original material will change accordingly on the left and right sides. can be made smaller.

[Embodiment] FIG. 1 is a front perspective view showing a first embodiment of the present invention, and FIG. 2 is a rear perspective view.

In the figure, reference numeral 1 denotes the main body of the pants, which, as is well known, includes a water-permeable top sheet in contact with the wearer's skin, a back sheet located on the opposite side of the top sheet, and a water-absorbent sheet interposed between the two sheets. It consists of a core. 2 is the front body, 3 is the back body, 4 is the crotch area, 5 is the right side, 6 is the left side, 7 is the opening for the waist area provided above, 8
9 is the right leg hole on the lower right side, and 9 is the left leg hole on the lower left side.

FIG. 3 is a plan view schematically showing the original material for the pants body of the disposable diaper shown in FIGS. 1 and 2. FIG.

In FIG. 3, 10 is the original shape of the pants body, 11 is its vertical center line, and 12 is the right I1, which will be described later, from the vertical center line j1.
A right slit 13 for forming a right leg hole 8 (see FIG. 1), which is provided diagonally toward the right side 5 from a location away from the point 1;
14 is a left slit for forming a left leg hole 9 (see FIG. 1), which is provided diagonally toward the left side 6 from a location farther leftward from the vertical center line 11 (described later); 15 is an elastic body around the waist provided in the back body 3; 16 is an elastic body around the right leg provided parallel to the right slit 12; 17 is an elastic body around the right leg provided in the left slit 13. This is an elastic body around the left leg installed parallel to the left leg.

In FIG. 4, the pants main body original material 10 shown in FIG. The right side part 5 is shown in a state in which the left side part 6 of the front body part 2 and the left side part 6 of the back body part 3 are respectively joined.

By doing this, the right leg hole 8 in FIG. 1 is formed by the right slit 12 shown in FIG. 3, and similarly,
The left leg hole 9 can be formed by the left slit 13.

FIG. 5 is an explanatory diagram comparing the original pants body material 10 shown in FIG. 3 with the conventional technology.

Since the right slit 12 and the left slit 13 are symmetrical with respect to the vertical center line 11, the right slit 12 is mainly
I will explain about it.

The right slit 12 is provided diagonally toward the right side portion 5 from a location spaced a distance a from the vertical center line 11 to the right. The required length of this right slit 12 is b,
Let θ be the angle with respect to the straight horizontal line.

Then, the width dimension from the vertical center line 11 of the pants body original material 10 to the right side part 5 is (a + c), and C is b
Since cos θ, a+c=a+bcO5θ
−(1). On the other hand, in the conventional technique, the cutting line 19 for forming the right leg hole has a required length b in the transverse direction. Therefore, in the conventional technology, the vertical center line 11
The width dimension from to the right side portion 5a is (a+b), that is,
(a+b+d). That is, a + c + d = a + b
CO5θ + d·(2). Above (1)
Comparing Equation and Equation (2), in the conventional technology, the width dimension is larger on one side by d, that is, for the required length b, d=b(1-(:OSθ )...(3) becomes larger. In other words, in the present invention, the above (
3) becomes d or O, and the width dimension of the pants body original material 10 can be made smaller than that of the conventional one.

Note that the left slit 13 and the conventional cutting line 2 for forming the left leg hole
The relationship for 0 is the same, and in the conventional technology, the width dimension from the vertical center line 11 to the left side portion 6a is increased by the above-mentioned d.

6 to 9 show a second embodiment of the invention.

This second embodiment is similar to the first embodiment described above in major parts. Reference numeral 21 in FIG. 6 indicates a break line provided in the horizontal direction in a part of the vicinity of the opening 7, such as a perforation line provided with a length sufficient to form a ring-shaped binding member 22, which will be described later. It consists of

In the paper diaper shown in FIG. 6, when discarding it after use, first, as shown in FIG. 7, a ring-shaped binding member 22 is formed by cutting off the portion along the break line 21. Next, as shown in FIG. 8, this paper diaper is rolled up from the crotch area 4 upwards into a horizontally long cylindrical shape, and then, as shown in FIG. The elasticity of the binding member 22 is used to elastically wrap the binding member 22 to perform binding. By doing this, the diaper as a whole becomes compact and less likely to generate a bad odor, so it is disposed of after doing so.

10 to 13 show a third embodiment of the present invention.

This third embodiment is similar to the first embodiment described above in its main parts. 10, 23 is a break line provided on the stretchable material such as non-woven fabric on the right side, 24 is a break line provided on the stretchable material such as non-woven fabric on the left side, and the break line 2324 is the break line provided on the stretchable material such as non-woven fabric on the left side. The perforations or incision lines are such that they cannot be separated by body movements, but can be separated by an adult intentionally applying force to tear them apart.

When disposing of the disposable diaper shown in FIG. 10 after use, first, as shown in FIG. The tying strip 25 and the left tying strip 26 are then formed, and then, as shown in FIG. While folding the two knotting strips 25.26 toward the center so that they do not spread out again, as shown in FIG.
Connect 6 to each other. In addition, in FIG. 13, the knot is indicated by the reference numeral 27. By doing this,
The entire diaper is tied up and compacted, and is less likely to generate a bad odor, so it can be disposed of after doing this.

14 to 17 show a fourth embodiment of the present invention.

This fourth embodiment is similar to the first embodiment described above in major parts. In FIG. 14, 31 is the right joining tape, 32 is the left joining tape, and 33 is the right joining tape 3.
1 is an end fixing part, 34 is an end fixing part of the left joining tape 32, 35 is a right release paper, and 36 is a left release paper. That is, in this fourth embodiment, the bonding tape 31.3
2 is an adhesive tape, and right side joining tape 31
One end is fixed to the back body 3 near the right side part 5 below the opening 7 (see the end fixing part 33), and the other end is attached to the right side release paper 3.
5, and is removably attached to the left side joining tape 3.
2 is fixed at one end to the back body 3 near the left side 6 below the opening 7 (see the end fixing section 34), and the other end is detachably attached to the left release paper 36.

In the paper diaper shown in FIG. 14, when discarding it after use, first, as shown in FIG.
．． The other ends of 32 are peeled off from the release paper 35 and 36, respectively. Next, as shown in FIG. 16, it is rolled upward from the crotch area 4 into a horizontally long cylindrical shape. Further, both sides of the tape are bent toward the center, and the other ends of both tapes 31 and 32 are attached so that they do not unfold again, as shown in FIG.

By making it as shown in FIG. 17, the entire diaper becomes like one block and is compactly assembled.
Also, since it is less likely to generate bad odors, it is disposed of after doing this.

In the fourth embodiment, a case has been described in which adhesive tape is used as the joining tape 3132, but a Velcro tape may be used as the joining tape. In this case, when a male Velcro type tape is used as the joining tape, a female type Velcro type tape should be used in place of the release paper 35, 36, or at least a water-impermeable back sheet.
It is only necessary that the part corresponding to the other end of the male Velcro type tape be processed into a raised shape. Further, whether the joining tape is an adhesive tape or a Velcro tape, as long as the length is appropriately lengthened, only one of the left and right joining tapes may be used.

As another embodiment of the present invention, in FIG. 4, the right slit 12 and the left slit 13 are in the shape of a square, so in FIG. 1, the right leg hole 8 and the left leg hole are Although the portion 9 is in the shape of a square, there is one in which the right slit 12 and the left slit 13 are provided in opposite directions so that the shape is reversed. There is also an absorbent material in which a plastic sheet is placed under a water-absorbent core, and an absorbent material is sandwiched between an inner layer and an outer layer of nonwoven fibers.

[Effects of the Invention] As explained above, according to the present invention, the slits for forming the leg holes are not provided directly laterally toward the side ends, but are provided diagonally in the front body. Therefore, the length of the slit is the cosine (CO5θ) of the oblique angle (θ) of the slit with respect to the transverse direction.
), which affects the width of the original material for the pants body. Therefore, compared to the conventional method, the width of the original material for the pants body can be made smaller on the left and right sides, reducing material costs. There is an effect that can be done.

[Brief explanation of drawings]

Fig. 1 is a front perspective view showing the first embodiment of the present invention;
The figure is a rear perspective view of the figure in Figure 1, Figure 3 is a plan view schematically showing the original material for the pants body of the disposable diaper shown in Figure 1, and Figure 4 is a folded back view of the original material for the pants body shown in Figure 3. 5 is a plan view showing the joined state; FIG. 5 is a comparative illustration of the original material for the pants body shown in FIG. 3 and the conventional technology; FIG. 6 is a perspective view showing the second embodiment of the present invention; FIG. The figure is a perspective view showing a state in which the tensioning member is formed by cutting away the part of the waist elastic body provided at the break line in Fig. 6, and Fig. 8 shows the state in which the disposable diaper shown in Fig. 7 is rolled up. FIG. 9 is a perspective view showing a state in which the disposable diaper shown in FIG. 8 is tightened with a binding member. FIG. FIG. 11 is a perspective view showing the state in which the tying strip is separated from the break line in FIG. 10 and spread out laterally, FIG. 12 is a perspective view showing the state in which the disposable diaper shown in FIG. 11 is rolled up, FIG. 13 is a perspective view showing the state in which the disposable diaper shown in FIG. 12 is tied up with a tying strip;
FIG. 14 is a perspective view showing the fourth embodiment of the present invention, and FIG.
The figure is a perspective view showing the state in which the other end of the joining tape in Fig. 14 has been peeled off, Fig. 16 is a perspective view showing the state in which the disposable diaper in Fig. 15 is rolled up, and Fig. 17 is the state in Fig. 16. It is a perspective view showing a state in which both sides of the disposable diaper are bent toward the center and the other end of the joining tape is attached. 1... Pants body 2... Front body 3... Back body 4... Crotch area 5... Right side
6... Left side 7... Opening 8.
・Right leg hole 9 ・Left leg hole 10 ・Pants body original material 11 ・Vertical center line 12 ・Right side slit 13 ・
...Left slit and 4 others Figure Figure Figure Figure Figure Figure 6 Figure Figure Figure Figure Figure 0 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. The front body of the pants body, which consists of a water-permeable top sheet in contact with the wearer's skin, a water-impermeable back sheet located on the opposite side of the top sheet, and a water-absorbent core interposed between the two sheets. and both sides of the back body are glued together to form an opening for the waist area at the top and leg holes at the left and right sides of the bottom. A disposable diaper characterized by comprising slits for forming leg holes that are diagonally provided toward each side end from a location appropriately away from the longitudinal centerline.