JP2020092894A - Absorbent article and method for manufacturing absorbent article - Google Patents

Abstract

An object of the present invention is to provide a technique capable of obtaining breathability and suppressing stuffiness.
The present invention is an absorbent article, which is defined by a first non-woven fabric, a second non-woven fabric overlaid on the first non-woven fabric, and a non-linear cut that penetrates the first non-woven fabric in the thickness direction. A first nonwoven piece. Then, the first non-woven fabric piece is adhered to the second non-woven fabric.
[Selection diagram] Figure 8

Description

The present invention relates to an absorbent article and a method for manufacturing the absorbent article.

BACKGROUND ART Absorbent articles such as disposable diapers, absorbent pads (urine pads), and sanitary products are known. The absorbent article is made of pulp or super absorbent polymer (SAP) and includes an absorbent body that absorbs liquid such as urine and body fluid. Between the absorbent article and the wearer's skin, the liquid absorbed by the absorber, the moisture generated from the wearer's sweat, and the like are likely to accumulate. This moisture causes the wearer of the absorbent article to feel uncomfortable, such as stuffiness, and causes a decrease in the feeling of wearing the absorbent article.

Patent Document 1 describes an absorbent article including a nonwoven fabric having through holes formed therein to obtain air permeability for preventing stuffiness. Further, Patent Document 1 describes a perforation method for forming through holes in a nonwoven fabric.

Japanese Patent No. 6402817

When forming a through hole in a nonwoven fabric using a piercing needle, the piercing needle is heated to a predetermined temperature and the thermoplastic resin material contained in the nonwoven fabric is heated and deformed when the through hole is formed to maintain the shape of the through hole. Heat treatment is performed. However, it is difficult to control a piercing needle having a diameter of less than several mm to a predetermined temperature suitable for forming a through hole. In addition, the piercing needle may not be controlled to a predetermined temperature, or the through holes may not be formed if the texture of the nonwoven fabric is not uniform. If the non-woven fabric has no through-holes, the absorbent article cannot obtain breathability, and the feeling of wearing is deteriorated due to stuffiness.

Therefore, an object of the present invention is to provide a technique capable of obtaining breathability and suppressing stuffiness.

In order to solve the above problems, in the present invention, a non-linear cut is formed in one of the two non-woven fabrics.

Specifically, the present invention is an absorbent article, which is defined by a first non-woven fabric, a second non-woven fabric overlaid on the first non-woven fabric, and a non-linear cut that penetrates the first non-woven fabric in the thickness direction. And a first non-woven fabric piece, the first non-woven fabric piece being bonded to the second non-woven fabric.

In the absorbent article, the first non-woven fabric piece may be connected to the first non-woven fabric by an uncut portion connecting both ends of the cut.

In the absorbent article, the first nonwoven fabric piece may be cut from the first nonwoven fabric along an uncut portion that connects both ends of the cut.

Further, the present invention can be understood from the aspect of the method for manufacturing an absorbent article. That is, the present invention is a method for manufacturing an absorbent article, wherein a non-linear cutout is formed in the first nonwoven fabric in the thickness direction, the cutout is defined by the cutout, and an uncut portion connecting both ends of the cutout is left. By providing a first nonwoven piece connected to the first nonwoven by.

The method for manufacturing the absorbent article may further include a step of cutting the first nonwoven fabric piece from the first nonwoven fabric.

In the method for manufacturing an absorbent article, a step of adhering the first non-woven fabric piece to the second non-woven fabric, comprising a second non-woven fabric layered on the first non-woven fabric, and adhering the first non-woven fabric piece to the second non-woven fabric. After that, the method may further include the step of cutting the first nonwoven fabric piece from the first nonwoven fabric.

According to the above-mentioned present invention, breathability of an absorptive article is acquired and stuffiness can be controlled.

FIG. 1 is a perspective view of a pants-type disposable diaper according to an embodiment. FIG. 2 is an exploded perspective view of the diaper according to the embodiment. FIG. 3 is a diagram schematically showing a developed and expanded state of the diaper according to the embodiment. FIG. 4 is a diagram showing a ventilation path forming sheet of the diaper according to the embodiment. FIG. 5 is a diagram showing the relationship between the distance between the rubber threads and the ventilation path appearing in the waist gather. FIG. 6 is a diagram showing a diaper manufacturing apparatus according to the embodiment. FIG. 7: is a figure which shows the manufacturing apparatus of the diaper which concerns on embodiment. FIG. 8: is sectional drawing of the nonwoven fabric used for the diaper which concerns on embodiment. FIG. 9: is sectional drawing of the nonwoven fabric used for the diaper which concerns on embodiment. FIG. 10 is a flowchart regarding the method of manufacturing the diaper according to the embodiment.

Hereinafter, embodiments of the present invention will be described. The embodiment described below is an example of the embodiment of the present invention, and the technical scope of the present invention is not limited to the following modes.

<Embodiment>
FIG. 1 is a perspective view of a pants-type disposable diaper (hereinafter, simply referred to as “diaper”) according to an embodiment. The term regarding the direction used in the present application means a direction that corresponds to the front, rear, left and right of the wearer when the diaper 1 is worn by the wearer. For example, the term “left-right direction” as used in the present application means a direction that matches the left-right direction of the wearer of the diaper 1 when worn.

In this embodiment, as an example of an absorbent article, a pants-type disposable diaper having a tubular structure having an opening into which the wearer's abdominal circumference is inserted, and a pair of left and right openings through which the wearer's left lower leg and right lower leg are inserted. However, the “absorbent article” referred to in the present application is not limited to pants-type disposable diapers. The "absorbent article" referred to in the present application includes, for example, a tape fixed near one end of a sheet-shaped member that covers the crotch (pubic part) of a wearer from the front body to the back body. It includes various forms of absorbent articles that can wrap the abdominal girth and inseam, such as a tape-type disposable diaper having a tubular structure formed by being attached near the ends.

The diaper 1 includes a crotch region 1B that is a region corresponding to a crotch region that covers the wearer's pubic region (inseam) in a worn state, and a region that corresponds to the front body around the waist of the wearer and that is abdominal side of the wearer It has a front body region 1F for covering and a rear body region 1R for covering the back side of the wearer, which is a region corresponding to the back body around the waist of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and the back body region 1R is located on the rear side of the crotch region 1B. Since the diaper 1 in the present embodiment is a pants-type disposable diaper, the left edge of the front body region 1F and the left edge of the rear body region 1R are joined to each other, and the right edge and the rear body region of the front body region 1F are joined together. The right edges of region 1R are joined together. Therefore, in the diaper 1, the torso opening 2T is formed by the upper edge of the front body region 1F and the upper edge of the rear body region 1R. Further, in the diaper 1, a left lower limb opening 2L is formed on the left side portion of the crotch region 1B that is not joined, and a right lower limb opening 2R is formed on the right side portion of the crotch region 1B. Then, in the diaper 1, the left lower limb of the wearer is inserted into the left lower limb opening 2L, the right lower limb of the wearer is inserted into the right lower limb opening 2R, and the trunk of the wearer enters the torso opening 2T. When worn, the front body region 1F is arranged on the wearer's abdomen side, the back body region 1R is arranged on the wearer's back side, and the left lower limb opening 2L and the right lower limb opening 2R are formed on the wearer's thigh. It is fixed to the wearer's body while surrounding the part. Since the diaper 1 is fixed to the wearer's body in such a form, the wearer can walk while wearing the diaper 1.

In the diaper 1, an absorber capable of absorbing and holding a liquid is arranged mainly in the vicinity of the crotch region 1B. In addition, the diaper 1 has a left lower limb opening portion surrounding the thigh of the left lower limb of the wearer in order to suppress formation of a gap serving as a liquid outflow path between the diaper 1 and the wearer's skin. A solid gather 3BL is provided in 2L, a solid gather 3BR is provided in the right lower limb opening 2R surrounding the thigh of the wearer's right lower limb, and a waist gather 3R is provided in a region surrounding the wearer's abdominal girth. The three-dimensional gathers 3BL and 3BR and the waist gather 3R are in close contact with the wearer's skin by the elastic force of the rubber thread. Therefore, the excreted liquid discharged from the pubic area of the wearer is absorbed by the absorbent body of the diaper 1 with almost no leakage from the diaper 1.

FIG. 2 is an exploded perspective view of the diaper 1 according to the embodiment. Further, FIG. 3 is a diagram schematically showing a state in which the diaper 1 according to the embodiment is expanded and expanded. FIG. 3(A) schematically shows the internal structure of the diaper 1 in the expanded and expanded state when viewed from the left side. FIG. 3B schematically shows a plan view of the diaper 1 in the unfolded and stretched state.

The diaper 1 has cover sheets 4F and 4R that form an outer surface when worn by a wearer, and a pad cover sheet 6. The cover sheet 4F mainly forms the outer surface of the front body region 1F of the diaper 1. The pad cover sheet 6 mainly forms the outer surface of the crotch region 1B of the diaper 1. The cover sheet 4R mainly forms the outer surface of the rear body region 1R of the diaper 1. The cover sheets 4F, 4R and the pad cover sheet 6 are provided to reinforce the outer surface of the diaper 1 and to improve the touch. For example, in order to suppress excrement leakage, a liquid impermeable thermoplastic resin is used. Can be used as the material. Here, examples of the liquid-impermeable thermoplastic resin include polyethylene (PE) and polypropylene (PP).

The diaper 1 includes an inner cover sheet 5F laminated on the wearer side surface of the cover sheet 4F (side surface of the wearer's skin), and an inner cover sheet 5R laminated on the wearer side surface of the cover sheet 4F. Have. The inner cover sheet 5F is a sheet-shaped member having a shape that matches a portion of the cover sheet 4F closer to the crotch region 1B than a folding line 4F6 described later. Similarly to the inner cover sheet 5F, the inner cover sheet 5R is also a sheet-shaped member having a shape that matches a portion of the cover sheet 4R on the crotch region 1B side of a folding line 4R6 described later.

Further, the diaper 1 has a back sheet 7, an absorbent body 8 and a center sheet 9 which are sequentially stacked on the wearer side surface of the pad cover sheet 6. The pad cover sheet 6 is a substantially rectangular sheet having a length from the front body of the wearer to the back body via the inseam in the longitudinal direction and having a predetermined lateral width in the width direction orthogonal to the longitudinal direction. is there. Further, the back sheet 7, the absorber 8 and the center sheet 9 are all sheet-like members having a substantially rectangular appearance like the pad cover sheet 6, and the longitudinal direction thereof coincides with the longitudinal direction of the pad cover sheet 6. In this state, the pad cover sheets 6 are sequentially laminated. The back sheet 7 is a sheet made of a liquid impermeable thermoplastic resin as a material in order to suppress excrement leakage. The center sheet 9 is a sheet-shaped member that is arranged on the skin side of the wearer so as to cover the water absorbing surface of the absorber 8. The center sheet 9 is partially or wholly liquid-permeable. Therefore, when the diaper 1 is worn, the liquid excreted from the wearer penetrates the absorber 8 through the center sheet 9 that can come into contact with the wearer's skin and is absorbed there. Examples of the liquid-permeable sheet include woven cloth, non-woven cloth, and porous film. Further, the center sheet 9 may have hydrophilicity.

The absorbent body 8 has a structure in which short fibers of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers obtained by subjecting synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate to hydrophilic treatment are treated with water. It has a structure in which a granular absorbent resin such as a hydrophilic superabsorbent polymer having a cross-linking structure capable of absorbing and holding is retained. Therefore, when the absorbent body 8 absorbs the liquid excreted from the wearer, the absorbent body 8 swells the absorbent resin held in the gaps in the short fibers to hold the liquid in the short fibers. The absorber 8 may have a single-layer structure composed of one mat or a laminated structure in which a plurality of mats are stacked. Moreover, the absorber 8 can take an appropriate shape according to the purpose. Examples of the shape of the absorber 8 include a rectangular shape, an hourglass shape in which the vicinity of the central portion is constricted, and various other shapes.

The back sheet 7, the absorber 8 and the center sheet 9 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's pubic area (inseam) is covered with the pad cover sheet 6 in which the back sheet 7, the absorber 8 and the center sheet 9 are laminated, Both ends are located on the wearer's ventral side and dorsal side. That is, the wearer's genital area is in a state of being covered with the absorber 8 from the wearer's ventral side to back side. Therefore, even if the wearer discharges the liquid out of the body in any of the posture in which the belly faces down and the posture in which the back faces down, the discharged liquid contacts the absorber 8 through the center sheet 9. Will be done.

Further, the diaper 1 has elongated strip-shaped side sheets 10L and 10R for forming the above-mentioned three-dimensional gathers 3BL and 3BR. The side seats 10L and 10R are provided on the long sides of the center seat 9. Thread rubbers 10L1 and 10R1 are adhered to the side sheets 10L and 10R along the longitudinal direction. Therefore, in the side sheets 10L and 10R, the edge 4F7 of the cover sheet 4F, which is the left edge of the front body region 1F, and the edge 4R7 of the cover sheet 4R, which is the left edge of the rear body region 1R, are joined to each other, and As shown in FIG. 1, the edge 4F8 of the cover sheet 4F, which is the right edge of the front body region 1F, and the edge 4R8 of the cover sheet 4R, which is the right edge of the back body region 1R, are joined together. When the diaper 1 in such a completed state is obtained, it is pulled in the longitudinal direction by the contracting force of the rubber thread 10L1, 10R1 and rises from the center sheet 9 along the folding lines 10L2, 10R2. As a result, three-dimensional gathers 3BL and 3BR that prevent the liquid from flowing out from the left lower limb opening 2L and the right lower limb opening 2R are formed. The joining method of the edge 4F7 in the cover sheet 4F, the edge 4R7 in the cover sheet 4R, the edge 4F8 in the cover sheet 4F, and the edge 4R8 in the cover sheet 4R is not particularly limited, and examples thereof include heat sealing, high frequency sealing, and ultrasonic sealing. Can be done by

Here, as shown in FIG. 3, one end side of the cover sheet 4F is folded back along the folding line 4F6. The above-mentioned waist gather 3R is formed by adhering thread rubbers (thread rubbers) 4F2 and 4F3 to the cover sheet 4F and adhering thread rubbers (thread rubbers) 4R2 and 4R3 to the cover sheet 4R. To be done. The thread rubbers 4F2 and 4F3 adhered to the cover sheet 4F form the thread rubber 4F2 and the thread rubber 4F3 from the side of the fold line 4F6 along the fold line 4F6 which will form the upper edge of the front body region 1F when folded back. They are provided in order. Similarly to the thread rubbers 4F2 and 4F3, the thread rubbers 4R2 and 4R3 bonded to the cover sheet 4R also form the upper edge of the back body region 1R when folded back, along the fold line 4R6. The rubber thread 4R2 and the rubber thread 4R3 are provided in this order from the side. Therefore, the rubber thread 4F2, 4F3 is provided on the cover sheet 4F in a direction in which the waistline direction, which is the stretching direction, is the left-right direction of the diaper 1. Further, the rubber thread 4R2, 4R3 is provided on the cover sheet 4R in such a direction that the longitudinal direction, which is the stretching direction, is the left-right direction of the diaper 1. Therefore, when the edge 4F7 and the edge 4R7 are joined to each other and the edge 4F8 and the edge 4R8 are joined to each other, the thread rubbers 4F2 and 4F3 and the thread rubbers 4R2 and 4R3 circulate along the trunk opening 2T in a substantially annular shape. The elastic member is formed to exert a function of contracting the torso opening 2T in the torso direction. That is, the thread rubbers 4F2, 4F3 and the thread rubbers 4R2, 4R3 exert contractive force to bring the diaper 1 into close contact with the wearer and prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference.

Further, thread rubbers 4F4 and 4F5 are bonded to the cover sheet 4F, and thread rubbers 4R4 and 4R5 are bonded to the cover sheet 4R. The thread rubbers 4F4 and 4F5 are elastic members provided in a region of the cover sheet 4F closer to the crotch region 1B than the thread rubber 4F3. However, unlike the thread rubbers 4F2 and F3 which are adhered from the left end to the right end of the cover sheet 4F without interruption, the thread rubbers 4F4 and 4F5 have a predetermined lateral width at the center portion in the width direction which corresponds to the absorber 8. Only cut. The cover sheet 4F has the thread rubbers 4F4 and 4F5, which are cut in the widthwise central portion corresponding to the absorber 8, so that the lower abdomen of the wearer does not hinder the expansion of the absorber 8 due to water absorption. Gives an appropriate feeling of adhesion to. The cover sheet 4R is the same as the cover sheet 4F, and the rubber thread 4R4, 4R5 in which the widthwise central portion corresponding to the absorber 8 is cut by a predetermined lateral width is adhered to the cover sheet 4R. , Gives a proper feeling of adhesion to the lower abdomen of the wearer.

The rubber thread 4F2 is provided so as to extend in the left-right direction along the upper edge portion of the front body region 1F shown in FIG. The rubber thread 4F2 is provided in parallel with three at a predetermined interval. A plurality of thread rubbers 4F3 are provided next to the three thread rubbers 4F2 so as to extend in the left-right direction similarly to the thread rubbers 4F2. When the diaper 1 is worn, the rubber thread 4F3 is located near the left and right ends of the pelvis of the wearer, and thereby mainly holds the diaper 1 on the waist of the wearer. Further, the thread rubber 4F2 has a function of preventing liquid from leaking from the diaper 1 by surrounding the wearer's abdominal region above the thread rubber 4F3 in a state in which the diaper 1 is worn, and a function of the thread rubber 4F3. It has a function of relieving the pressure on the wearer due to the contracting force and a function of discharging moisture in the diaper 1. As shown in FIG. 3, a plurality of thread rubbers 4F4 and 4F5 are provided next to the thread rubber 4F3 so as to extend in the left-right direction similarly to the thread rubber 4F3. Then, as described above, the rubber thread 4F4, 4F5 is cut at the portion corresponding to the absorber 8.

In addition, the diaper 1 includes a ventilation path forming sheet 11F laminated on the wearer side surface of the cover sheet 4F with the pad cover sheet 6, the back sheet 7, the absorber 8, the center sheet 9, and the side sheets 10L and 10R interposed therebetween. , The ventilation path forming sheet 11R laminated on the wearer side surface of the cover sheet 4R. Nonwoven fabric is used for the ventilation path forming sheets 11F and 11R. The ventilation path forming sheet 11F is superposed on the cover sheet 4F at one end side in the longitudinal direction of the center sheet 9. Further, the ventilation path forming sheet 11R is overlapped with the cover sheet 4R at the other end side in the longitudinal direction of the center sheet 9. It should be noted that in the present application, the state in which the sheets are overlapped is not limited to the form in which the sheets to be overlapped overlap each other in the state of being entirely in contact with each other, and is a concept including a form in which parts of the sheets overlap. For example, the ventilation path forming sheet 11F is overlapped with a part of the pad cover sheet 6 at one end side in the longitudinal direction touching a part of the cover sheet 4F. The diaper 1 is formed by stacking the backsheet 7 and the center sheet 9 with the absorber 8 sandwiched therebetween, as well as the cover sheets 4F and 4R, the ventilation path forming sheets 11F and 11R, the pad cover sheet 6, and the side sheets 10L and 10R. Therefore, it can be said to have a laminated body in which a plurality of these sheets are stacked.

FIG. 4A is a plan view showing the ventilation path forming sheet 11F. A non-linear cut 11F1 is formed through the ventilation path forming sheet 11F in the thickness direction. The cuts 11F1 are provided to ensure air permeability, and a plurality of cuts 11F1 are formed in the air passage formation sheet 11F. A large number of cuts 11F1 are arranged in a matrix in a region extending in the left-right direction along the upper edge of the front body region 1F (region surrounded by a rectangular dotted line in FIGS. 2 and 4A). Note that the plurality of cuts 11F1 may be arranged in a staggered pattern or other arrangement pattern. In the embodiment, the cut 11F1 has a substantially C-shape. The shape of the cut 11F1 is not limited to this, and the cut 11F1 may be U-shaped, V-shaped, or the like. The size of the cut 11F1 in the ventilation path forming sheet 11F is not particularly limited.

FIG. 4B is an enlarged view of the cut 11F1 in the area A surrounded by the circular dotted line in FIG. 4A. The diaper 1 is provided with a small piece 11F3 that is defined by the cut 11F1 and that is connected to the ventilation path forming sheet 11F by an uncut portion 11F2 that connects the end 11F11 of the cut 11F1 and the cut 11F12. In a plan view, the cut 11F2 is a curved curve having a convex shape such as a C shape, a U shape, and a V shape, and the uncut portion 11F2 becomes a linear shape, and the small piece 11F3 is connected to the ventilation path forming sheet 11F by the uncut portion 11F2. Is formed in. In the embodiment, the notch 11F1 has a fan shape with a central angle θ of about 270 degrees and is substantially C-shaped. Further, the small piece 11F3 can be bent in the thickness direction of the ventilation path forming sheet 11F starting from the uncut portion 11F2. A gap is created by bending the small piece 11F3 in the thickness direction, and the diaper 1 can further secure air permeability due to this gap.

FIG. 4C is a cross-sectional view taken along line BB passing through the centers of the small piece 11F3 and the uncut portion 11F2 in FIG. 4B. In FIG. 4C, the upper side toward the paper surface is the skin side, and the opposite lower side is the non-skin side. In the example shown in FIG. 4C, the small piece 11F3 is bent toward the non-skin side. This causes the small piece 11F3 to open in a valve-like manner on the non-skin side. The ventilation path forming sheet 11F contacts the wearer's skin when the diaper 1 is worn. The sweat generated from the skin surface of the wearer flows between the ventilation path forming sheet 11F and the skin. The small piece 11F3 that bends to the non-skin side can guide this sweat to the non-skin side. Thereby, the small piece 11F3 can guide sweat to the non-skin side between the ventilation path forming sheet 11F and the skin surface, and suppress stuffiness caused by this sweat, without allowing the wearer's sweat to stay between the ventilation path forming sheet 11F and the skin surface.

4A to 4C, the ventilation path forming sheet 11F is described as an example, but the ventilation path forming sheet 11R also includes a plurality of cuts 11R1. In the ventilation path forming sheet 11R shown in FIG. 2, a plurality of cuts 11R1 are formed in a region surrounded by a rectangular dotted line. Since the diaper 1 according to the embodiment includes the ventilation path forming sheet 11F having the cut 11R1 in the rear body region 1R, it is possible to suppress stuffiness in the rear body region 1R.

FIG. 5 is a diagram showing a relationship between the interval between the thread rubbers 4F2 and the size of the ventilation path appearing in the waist gather 3R in the front body region 1F. The diagram shown in FIG. 5A is a diagram when the waist gather 3R is viewed from the side where the wearer's skin touches. Further, the diagram shown in FIG. 5B is a diagram showing the internal structure in the waist gather 3R when viewed from the side of the diaper 1. Further, the diagram shown in FIG. 5C is a diagram showing a state where the waist gather 3R is viewed from above the diaper 1. The diagram shown in FIG. 5D is a diagram showing a state in which the waist gather 3R is viewed from above the diaper 1 in a state in which the waist gather 3R is contracted. In FIG. 5, the front body region 1F of the waist gather 3R is shown for convenience of description, but the same applies to the rear body region 1R of the waist gather 3R.

As shown in FIG. 5, the cover sheet 4F is folded back along the folding line 4F6 shown in FIG. 2, and the ventilation path forming sheet 11F is further overlapped and joined. The joining is performed in a state where each thread rubber and the sheet are stretched. The broken line with the symbol S in the diagram shown in FIG. 5A is the joined portion. In addition, a portion indicated by reference sign S in the drawings shown in FIGS. 5C and 5D is a joined portion.

The joint portion S that joins the cover sheet 4F and the air passage forming sheet 11F in a state where the cover sheet 4F is folded back along the folding line 4F6 is as shown in FIG. It has a linear form extending in a direction perpendicular to the upper edge of the front body region 1F shown. A plurality of joint portions S are provided in parallel, and further, the respective intervals are provided so as to alternate in size. Therefore, the joining portion S has a form in which double lines are arranged at equal intervals, as can be seen from FIG. By adopting a form in which the double lines constituted by the joint portions S are arranged at equal intervals, as shown in FIG. 5D, the waist ventilation 3R after contraction has the first ventilation path 12 and the second ventilation path. The paths 13 are formed alternately. This is done in a state where the thread rubber and the sheet are stretched, and then the stretched state is released and the waist gather 3R is contracted by the contracting force of the thread rubber 4F2. A relatively small first air passage 12 is formed due to the bending of the seat in a portion with a narrow space between S, and a relatively large second air passage due to the bending of the sheet in a portion with a wide space between the double lines. This is because 13 is formed.

Since the joint portions S are formed such that the double lines are arranged at equal intervals, the first ventilation passage 12 and the second ventilation passage 13, which are formed by the bending of the sheet, are formed in the waist gather 3R after contraction. The corrugations are formed alternately. Reference numeral SS indicated by a chain double-dashed line in FIG. 5(D) indicates a skin surface that abuts on the ventilation path forming sheet 11F when the wearer wears the diaper 1 as a virtual line. The second ventilation passage 13 is formed as a gap formed between the skin contact surface of the ventilation passage forming sheet 11F and the wearer's skin when the diaper 1 is worn by the wearer. Moisture between the diaper 1 and the wearer's skin surface can be discharged to the outside through the second ventilation passage 13 formed in the waist gather 3R. The first ventilation path 12 is a path through which moisture that has passed through the cut 11F1 and the gap 11F4 of the ventilation path forming sheet 11F passes. The diaper 1 can introduce the moisture generated between the diaper 1 and the skin surface into the first ventilation passage 12 through the cut 11F1 and the gap 11F4 and discharge the moisture to the outside. Thereby, the diaper 1 can suppress the stuffiness of the wearer. The 2nd ventilation path 13 is a path|route which connects the space between the diaper 1 and the skin surface, and the external space of the diaper 1 directly, and it discharges the moisture in the diaper 1 more smoothly. Further, since the ventilation path forming sheet 11R is provided with the notch 11R1, the diaper 1 can also obtain the same effect in the rear body region 1R of the waist gather 3R.

In the embodiment, the non-woven fabric in which the notches are formed is the ventilation path forming sheets 11F and 11R, but the cover sheets 4F and 4R in which the non-woven fabric is used, the inner cover sheets 5F and 5R, and the notches 11F1 in the pad cover sheet 6 are used. Similar notches may be formed. In the diaper 1, the non-woven fabric having the above-mentioned notch is arranged in at least one of the front body region 1F and the back body region 1R. Moreover, in the diaper 1, the non-woven fabric in which the notch is formed may be arranged in the crotch region 1B. Since the diaper 1 is provided with the non-woven fabric in which the notch is formed, it is possible to ensure air permeability and suppress stuffiness. The diaper 1 can ensure air permeability even if perforations are formed in the nonwoven fabric.

Next, a method for manufacturing the diaper 1 according to the embodiment and a manufacturing apparatus used for the method will be described. Since the embodiment is characterized by the step of processing the nonwoven fabric in the manufacturing process of the diaper 1, the step of processing the nonwoven fabric will be described below. Moreover, although the case where the nonwoven fabric 21 is used for the air passage forming sheet 11F will be described below, the nonwoven fabric processed by the following steps includes the air passage forming sheet 11R, the cover sheets 4F and 4R, the inner cover sheets 5F and 5R, It can be used for the pad cover sheet 6.

FIG. 6 shows an absorbent article manufacturing apparatus (hereinafter, simply referred to as “manufacturing apparatus”) 100 according to the embodiment. The manufacturing apparatus 100 is used to form a non-linear cut in a nonwoven fabric. The manufacturing apparatus 100 includes a carry-in roller unit 101, a carry-out roller unit 102, a first roller 110 having teeth 112 for forming a notch, a second roller 120 arranged to face the first roller 110, and a guide roller. And 130.

The carry-in roller unit 101 includes two rollers 101a and 101b that are arranged to face each other with a predetermined gap. The two rollers 101a and 101b are rotated in opposite directions by a drive source (not shown), and the non-woven fabric 21 is rolled into a roll shape. It is carried in to the notch forming position CP between the parts.

The first roller 110 has a cylindrical shape, and includes a plurality of teeth 112 arranged in a predetermined pattern on a curved outer peripheral surface 111 which is a side surface of the cylindrical shape. The teeth 112 penetrate the non-woven fabric 21 in the thickness direction to form non-linear cuts in the non-woven fabric 21. In the embodiment, the plurality of teeth 112 are arranged so as to form a matrix when the outer peripheral surface 111 is developed in a planar shape. Therefore, the nonwoven fabric 21 that has passed through the first roller 110 is formed with a plurality of cuts 11F1 in a matrix as shown in FIG. 4A. It should be noted that the plurality of teeth 112 may be arranged on the outer peripheral surface 111 corresponding to the arrangement pattern of the cuts formed in the nonwoven fabric 21.

Further, FIG. 6B shows the teeth 112 when viewed from above in a direction orthogonal to the outer peripheral surface 111 of the first roller 110. The tooth 112 has a substantially C-shape when viewed from above. When the tooth 112 penetrates the nonwoven fabric 21 in the thickness direction, the C-shaped cut 11F1 shown in FIG. 4B is formed. The shape of the tooth 112 may be U-shaped, V-shaped, or the like, and can be variously modified depending on the shape of the cut to be formed.

In addition, the second roller 120 is arranged so as to face the first roller 110. The second roller 120 has a cylindrical shape similar to the first roller 110, and the curved outer peripheral surface 121, which is the side surface of the cylindrical surface, faces the outer peripheral surface 111 of the first roller 110, and It is arranged with a predetermined gap. The outer peripheral surface 121 of the second roller 120 is provided with a plurality of receiving holes 122 corresponding to the arrangement pattern of the teeth 112 of the first roller 110. FIG. 6C shows the receiving hole 122 viewed from above in a direction orthogonal to the outer peripheral surface 121 of the second roller 120. The receiving hole 122 has a substantially C shape corresponding to the tooth 112 when viewed from above. As shown in FIG. 6A, the tooth 112 penetrating the nonwoven fabric 21 is housed in the receiving hole 122 at the notch forming position CP. This can prevent the rotation of the second roller 120 from interfering with the teeth 112. The shape of the receiving hole 122 may be any shape that can receive the teeth 112.

The rotating shaft 110x provided at the center of the cylindrical shape of the first roller 110 and the rotating shaft 120x provided at the center of the cylindrical shape of the second roller 120 are arranged so as to be parallel to each other. These rotating shafts 110x and 120x are respectively connected to a drive source (not shown), and the first roller 110 and the second roller 120 rotate in opposite directions at the same rotation speed.

The guide roller 130 guides the nonwoven fabric 21 to the carry-out roller unit 102 that carries the notched nonwoven fabric 21 to the next step. The nonwoven fabric 21 in which the notch is formed by the teeth 112 of the first roller 110 moves in the circumferential direction of the outer peripheral surface 111 by the rotation of the first roller 110. The rotating shaft 130x of the guide roller 130 is arranged parallel to the rotating shaft 110x of the first roller 110. The rotary shaft 130x is connected to a drive source (not shown), and the guide roller 130 rotates in the direction opposite to the first roller 110. The guide roller 130 includes a curved outer peripheral surface 131, and the outer peripheral surface 131 is arranged with a predetermined gap from the outer peripheral surface 111 of the first roller 110. When the nonwoven fabric 21 that has moved in the circumferential direction of the outer peripheral surface 111 by the rotation of the first roller 110 comes into contact with the outer peripheral surface 131 of the guide roller 130, the nonwoven fabric 21 is guided along the outer peripheral surface 131 and carried out in the direction of the carry-out roller portion 102. It

The carry-out roller unit 102 includes two rollers 102a and 102b arranged to face each other. The two rollers 102a and 102b rotate in opposite directions by a drive source (not shown), and carry out the processed nonwoven fabric 21 to the next step. The processed nonwoven fabric 21 may be temporarily wound around a take-up roll at the end of the carry-out roller unit 102.

Next, the operation of the manufacturing apparatus 100 will be described in more detail. 6, the roller 101a of the carry-in roller unit 101 rotates counterclockwise, the roller unit 101b of the carry-in roller unit 101 rotates clockwise, and the nonwoven fabric 21 from the original roll 20 moves to the first roller 110. Is delivered to. Further, the first roller 110 rotates clockwise and the second roller 120 rotates counterclockwise toward the plane of FIG. A notch is formed by the teeth 112 at the notch forming position CP on the nonwoven fabric 21 carried into the first roller 110. Further, the guide roller 130 rotates counterclockwise toward the paper surface of FIG. 6, and the nonwoven fabric 21 is guided toward the carry-out roller unit 102. In addition, the roller 102a of the carry-out roller unit 102 rotates counterclockwise and the roller unit 102b of the carry-out roller unit 102 rotates clockwise toward the paper surface of FIG. It is delivered to the take-up roll.

As described above, the method for manufacturing the diaper 1 includes the step of forming the non-linear cuts that penetrate the nonwoven fabric 21 in the thickness direction. As a result, it is possible to form a cut in the nonwoven fabric 21 for ensuring air permeability.

The method for manufacturing the diaper 1 may further include a step of bending the small piece 11F3 to the non-skin side, as shown in FIG. 4(C). For example, as shown in FIG. 6D, the suction portion 113 is provided on the outer peripheral surface 111 of the first roller 110 and at the center of the tooth 112. When the tooth 112 comes out of the nonwoven fabric 21 in the vicinity of the guide roller 130, the center of the cut (the center of the small piece 11F3) is sucked at the cut forming position CP shown in FIG. By pulling the center of the cut to the suction portion 113, the small piece is bent toward the outer peripheral surface 111 side of the first roller 110 starting from the uncut portion. In this case, the roller 102b of the carry-out roller unit 102 may not be provided in order to prevent the once bent small piece from returning to its original state. The non-woven fabric 21 is arranged on the diaper 1 so that the bent small piece is on the non-skin side.

Further, the step of bending the small piece of the nonwoven fabric 21 may be performed by the manufacturing apparatus 100 according to the modified example shown in FIG. FIG. 7A shows a manufacturing apparatus 100 according to the modified example. The manufacturing apparatus 100 according to the modified example is different from the manufacturing apparatus 100 shown in FIG. 6A in that the nonwoven fabric 21 that has passed through the notch forming position CP moves along the circumferential direction of the outer peripheral surface 121 of the second roller 120. Different. In this case, the manufacturing apparatus 100 may not include the guide roller 130 as shown in FIG. 7(A).

In this modified example, as shown in FIG. 7B, a suction portion 123 is provided on the outer peripheral surface 121 of the second roller 120 and in the center of the receiving hole 122. When the nonwoven fabric 21 is separated from the outer peripheral surface 121 of the second roller 120 by sucking the center of the cut (the center of the small piece 11F3) at the cut forming position CP shown in FIG. By pulling the center of the cut to the suction portion 123, the small piece is bent toward the outer peripheral surface 121 side of the second roller 120 with the uncut portion as the starting point. In this case, in order to prevent the once bent small pieces from returning to their original positions, the carry-out roller unit 102 is not provided with a roller that is in contact with the surface on which the small pieces are bent. The non-woven fabric 21 is arranged on the diaper 1 so that the bent small piece is on the non-skin side.

When the non-woven fabric 21 processed in this manner is used for the ventilation path forming sheet 11F, the method for manufacturing the diaper 1 includes the step of disposing the non-woven fabric 21 in the front body region 1F. Further, when the nonwoven fabric 21 is used for the ventilation path forming sheet 11R, for example, the method for manufacturing the diaper 1 includes a step of disposing the nonwoven fabric 21 in the back body region 1R. Thereby, the nonwoven fabric 21 can be used for the ventilation path forming sheets 11F and 11R. The processed non-woven fabric 21 may be arranged in the cover sheet 4F, 4R, the inner cover sheets 5F, 5R, and the pad cover sheet 6 to form these sheets.

By the way, in the absorbent article described in Patent Document 1, through holes are formed in the nonwoven fabric by using a piercing needle to ensure air permeability. A perforation needle that forms a through hole in a non-woven fabric is heated to a predetermined temperature or higher, and when forming a perforation, the thermoplastic resin material contained in the non-woven fabric is heated and deformed, and a heat treatment is performed to maintain the shape of the through hole. It However, the piercing needle is repeatedly contacted and non-contacted with the nonwoven fabric when the through holes are formed in the nonwoven fabric. There are also suitable temperatures for forming through holes in the nonwoven. In consideration of these, it is difficult to control a perforating needle having a diameter of less than several mm to a predetermined temperature suitable for forming a through hole. In addition, the piercing needle may not be controlled to a predetermined temperature, or the through holes may not be formed if the texture of the nonwoven fabric is not uniform. If the non-woven fabric has no through-holes, the absorbent article cannot obtain breathability, and the feeling of wearing is deteriorated due to stuffiness. Further, if the through holes could be formed, the nonwoven fabric around the heat-treated through holes would become hard. If the fibers around the through-holes touch the wearer's skin or the like, the wearer may feel uncomfortable and the wearing comfort of the absorbent article may deteriorate.

On the other hand, in the method of manufacturing the diaper 1 using the manufacturing apparatus 100, it is not necessary to heat the teeth 112 to a predetermined temperature when forming the cut. According to this manufacturing method, the nonwoven fabric around the notch is not hardened by heat treatment while ensuring the air permeability of the nonwoven fabric. Therefore, according to this manufacturing method, it is possible to process the non-woven fabric so that the diaper 1 is breathable and does not cause discomfort to the wearer. Thereby, according to this manufacturing method, the air permeability of the diaper 1 can be obtained and stuffiness can be suppressed. Further, by providing an uncut portion (for example, uncut portion 11F2 shown in FIG. 4), it is possible to prevent the cutting portion (for example, the small piece 11F3 shown in FIG. 4) from being completely cut from the nonwoven fabric 21, and at the time of manufacturing the diaper 1. It is possible to prevent the small pieces from being discharged as dust.

Next, the non-woven fabric that can be used for the cover sheets 4F and 4R, the inner cover sheets 5F and 5R, the pad cover sheet 6, and the ventilation path forming sheets 11F and 11R will be described. FIG. 8A is a cross-sectional view of the nonwoven fabrics 30 and 31 that can be used for the cover sheets 4F and 4R, the inner cover sheets 5F and 5R, the pad cover sheet 6, and the ventilation path forming sheets 11F and 11R. In addition, in FIG. 8(A) and FIGS. 8(B) and 8(C) described later, the non-woven fabrics 30 and 3 are used.
The gap between 1 is illustrated wider than the gap actually generated between them. You may use the thing which laminated|stacked the nonwoven fabrics 30 and 31 integrally as the cover sheets 4F and 4R, the inner cover sheets 5F and 5R, the pad cover sheet 6, and the ventilation path formation sheets 11F and 11R. Alternatively, the nonwoven fabric 30 may be used for one of the two overlapping sheets in the finished diaper 1 and the nonwoven fabric 31 may be used for the other sheet. For example, the nonwoven fabric 30 may be used for the ventilation path forming sheet 11F and the nonwoven fabric 31 may be used for the inner cover sheet 5F.

As shown in FIG. 8(A), the non-woven fabric 30 is processed by the manufacturing apparatus 100 shown in FIG. 6 and FIG. 7 and cut in the same manner as the ventilation path forming sheet 11F shown in FIG. 4(A) to (C). A plurality of 30A1 are formed. The notch 30A1 has a fan shape with a central angle (similar to the central angle θ shown in FIG. 4B) of about 270 degrees, and has a substantially C shape. The central angle is preferably 359 degrees or less. In addition, the diaper 1 includes a small piece 30A3 defined by a non-linear cut that penetrates the nonwoven fabric 30 in the thickness direction. The small piece 30A3 is connected to the non-woven fabric 30 by an uncut portion 30A2 that connects both ends of the cut 30A1. The non-woven fabric 30 is an example of the “first non-woven fabric”, and the small piece 30A3 is an example of the “first non-woven fabric piece”.

The small piece 30A3 is bent at the suction portions 113 and 123 from the uncut portion 30A2 as a starting point, and is bent toward the nonwoven fabric 31. As a result, the small piece 30A3 opens in a valve shape toward the nonwoven fabric 31. Furthermore, the small piece 30A2 is adhered to the nonwoven fabric 31 by an adhesive such as ultrasonic welding or hot melt, or heat fusion. In FIG. 8A, a region S1 where the small piece 30A3 and the non-woven fabric 31 are bonded is surrounded by a dotted line. By adhering the small piece 30A3 to the non-woven fabric 31, it is possible to prevent the bending of the small piece 30A3 from being canceled by the action of an external force and the like, and it is possible to stably secure the gap 30A4 caused by the bending of the small piece 30A3. In addition, the non-woven fabric 30 side is the skin side of the wearer, and the non-woven fabric 31 side is the non-skin side opposite to the skin side.

FIG. 8(B) is a modification of the configuration shown in FIG. 8(A). In this modification, the small piece 30A3 is cut from the nonwoven fabric 30 along the uncut portion 30A2 that connects both ends of the cut 30A1. Thereby, since the through holes 30A5 are formed in the nonwoven fabric 30, the diaper 1 can ensure the air permeability by the through holes 30A5. Further, since the small piece 30A3 is adhered to the non-woven fabric 31, it is possible to prevent the small piece 30A3 from being discharged as dust when the diaper 1 is manufactured.

FIG. 8C is a modification of the configuration shown in FIGS. 8A and 8B. In this modification, a plurality of through holes 31A1 are formed in the nonwoven fabric 31A. The through hole 31A1 is formed, for example, in a circular shape by a piercing needle. This makes it possible to secure a ventilation path from the non-woven fabric 30 toward the non-woven fabric 31 through the through holes 30A5 and 31A1. Also in this modification, the small piece 30A3 may be connected to the non-woven fabric 30 as in the configuration example shown in FIG. Even in this case, it is possible to secure a ventilation path from the nonwoven fabric 30 toward the nonwoven fabric 31 through the gap 30A4 and the through hole 31A1.

The through hole 31A1 is formed at a position that does not overlap the small piece 30A3 when viewed in the stacking direction (thickness direction) of the nonwoven fabrics 30 and 31. Accordingly, even when the heat treatment is performed around the through hole 31A1 when forming the through hole 31A1, since the nonwoven fabric 30 is arranged on the wearer's skin side of the through hole 31A1, it penetrates the wearer's skin. Since the hole 31A1 and the non-woven fabric 31 around the hole 31A1 do not come into direct contact with each other, it is possible to prevent the wear feeling from being degraded.

FIG. 9(A) further shows a modification of the configuration shown in FIG. 8(A)-(C). In the modified example shown in FIG. 9A, the non-woven fabric 32 is further laminated on the non-skin side of the non-woven fabric 31. In addition, in FIG. 9A and FIG. 9B described later, the gap between the nonwoven fabrics 30, 31, and 32 is illustrated wider than the gap actually generated between them. You may use what laminated|stacked the nonwoven fabrics 30, 31, and 32 integrally as the cover sheets 4F and 4R, the inner cover sheets 5F and 5R, the pad cover sheet 6, and the ventilation path formation sheets 11F and 11R. Further, the non-woven fabric 30, 31, 32 may be used for one of the three sheets which are overlapped in the completed diaper. For example, the nonwoven fabric 30 may be used for the ventilation path forming sheet 11F, the nonwoven fabric 31 may be used for the inner cover sheet 5F, and the nonwoven fabric 31 may be used for the cover sheet 4F.

As shown in FIG. 9(A), the nonwoven fabric 32 is processed by the manufacturing apparatus 100 shown in FIGS. 6 and 7 in the same manner as the ventilation path forming sheet 11F and the nonwoven fabric 31 shown in FIGS. 4(A) to 4(C). Thus, a plurality of cuts 32A1 are formed. The notch 32A1 is a fan shape having a central angle (similar to the central angle θ shown in FIG. 4B) of about 270 degrees, and has a substantially C-shape. The central angle is preferably 359 degrees or less. The diaper 1 also includes a small piece 32A3 defined by a non-linear cutout that penetrates the nonwoven fabric 32 in the thickness direction. The small piece 32A3 is connected to the non-woven fabric 32 by an uncut portion 32A2 that connects both ends of the cut 32A1.

The small piece 32A3 is bent at the suction portions 113 and 123 from the uncut portion 32A2 as a starting point, and is bent toward the nonwoven fabric 31. As a result, the small piece 32A3 is opened in a valve shape on the nonwoven fabric 31 side. Further, the small piece 32A2 is adhered to the nonwoven fabric 22 by an adhesive such as ultrasonic welding or hot melt, or heat fusion. In FIG. 9(A), a region S2 where the small piece 32A3 and the non-woven fabric 31 are bonded is surrounded by a dotted line. By adhering the small piece 32A3 to the non-woven fabric 31, it is possible to prevent the bending of the small piece 32A3 from being canceled by the action of an external force and the like, and it is possible to stably secure the gap 32A4 generated by the bending of the small piece 32A3. The non-woven fabric 30 side is the skin side of the wearer, and the non-woven fabric 32 side is the non-skin side opposite to the skin side. Even if the diaper 1 has a structure in which the non-woven fabrics 31, 32 and 33 are stacked, the breathability from the skin side to the non-skin side is secured through the gap 30A4, the through hole 31A1 and the gap 32A4, and stuffiness is suppressed. be able to. Even if the through hole 31A1 is not formed, the air permeability can be improved by forming the cuts 30A1 and 32A1 in the nonwoven fabrics 30 and 32.

FIG. 9B is a modification of the configuration shown in FIG. 9A. In this modification, the small piece 32A3 is cut from the non-woven fabric 32 along the uncut portion 32A2 that connects both ends of the cut 32A1. Thereby, since the through hole 32A5 is formed in the nonwoven fabric 32, the diaper 1 can ensure air permeability by the through hole 32A5. Further, since the small piece 32A3 is adhered to the non-woven fabric 31, it is possible to prevent the small piece 30A3 from being discharged as dust when the diaper 1 is manufactured. Even if the diaper 1 has a configuration in which the non-woven fabrics 31, 32, 33 are stacked, the breathability from the skin side to the non-skin side is ensured through the through holes 30A5, 31A1, 32A5, and stuffiness can be suppressed. it can. Even if the through holes 31A1 are not formed, the air permeability can be improved by forming the through holes 30A5 and 32A5 in the nonwoven fabrics 30 and 32.

Next, a method for manufacturing the diaper 1 using the nonwoven fabrics 30 to 32 will be described. Since this manufacturing method is characterized by processing the nonwoven fabrics 30 to 32, the processing of the nonwoven fabrics 30 to 32 will be mainly described below.

FIG. 10A is a flowchart showing manufacturing steps in the case of the configuration shown in FIG. First, the notch 30A1 is formed in the nonwoven fabric 30 by the manufacturing apparatus shown in FIGS. 6 and 7 (step S101). In this step, a small piece 30A3 is provided which is defined by the cut 30A1 and is connected to the non-woven fabric 30 by an uncut portion 30A2 connecting both ends of the cut. Note that the non-woven fabrics 30 and 31 have already been stacked in step S101 of forming the cuts 30A1, and the non-woven fabric 30 is cut only in the non-woven fabric 30 by a method of penetrating only one of the two non-woven fabrics (half-cutting) 30A1 may be formed.

In step S102 following step S101, the small piece 30A3 is bonded to the nonwoven fabric 31. Note that the non-woven fabrics 30 and 31 may be overlaid after the cut 30A1 is formed in the non-woven fabric 30 and before the small piece 30A3 is bonded to the non-woven fabric 31.

Through the above steps, the diaper 1 having the configuration shown in FIG. 8A can be manufactured. When manufacturing the configuration shown in FIG. 9A, the small piece 32A3 may be bonded to the non-woven fabric 31 after the cut 32A1 is formed in the non-woven fabric 32.

FIG. 10B is a flowchart showing the manufacturing process in the case of the configuration shown in FIG. 8B. Since step S201 is the same as step S101 and step S202 is the same as step S102, description thereof will be omitted.

In step S203 following step S202, the small piece 30A3 is cut from the nonwoven fabric 30. For example, the small piece 30A3 is cut by pulling the nonwoven fabric 31 in a direction orthogonal to the uncut portion 30A2 or by pulling the nonwoven fabric 30 in the same direction to tear off the uncut portion 30A2. The small piece 30A3 can be easily torn off by leaving the fiber direction of the non-woven fabric 30 uncut and set as the direction orthogonal to 30A2. Thus, the method for manufacturing the diaper 1 may further include the step of cutting the small piece 30A3 from the nonwoven fabric 30 after adhering the small piece 30A3 to the nonwoven fabric 21. In the case of manufacturing the configuration shown in FIG. 9A, the method of cutting the small piece 32A3 can be of course the same as the method of cutting the small piece 30A3.

In addition, although the diaper 1 was illustrated in the said embodiment, the said structure and the manufacturing method are applicable also to the absorbent article of other forms. Examples of the absorbent article to which the above configuration and manufacturing method can be applied include various types of absorbent articles with gathers such as pants-type disposable diapers, tape-type disposable diapers, urine pads, and light incontinence pads, and no gathers. Mention may be made of flat absorbent articles.

1... Diaper: 1B... Inseam area: 1F... Front body area: 1R... Back body area: 2T... Trunk opening: 2L... Left lower limb opening: 2R... Right lower limb opening: 3BL, 3BR... 3D gather: 3R... West gather: 4F, 4R... Cover sheet: 4F1, 4R1... Opening: 4F2, 4F3, 4F4, 4F5, 4R2, 4R3, 4R4, 4R5, 10L1, 10R1... Thread rubber : 4F6, 4R6, 10L2, 10R2... Folding line: 4F7, 4F8, 4R7, 4R8... Edge: 5F, 5R... Inner cover sheet: 6... Pad cover sheet: 7... Backsheet: 8... Absorption Body: 9... Center seat: 10L, 10R... Side seat: 11F, 11R... Ventilation path forming sheet: 11F1, 11R1... Cut: 11F11, 11F12... End: 11F2... Uncut: 11F3... Small piece: 11F4... Gap: S... Joint part: 12... First ventilation passage: 13... Second ventilation passage: 20... Original roll: 30, 31, 32... Nonwoven fabric: 30A1, 32A1... Cut: 30A2, 32A2 · · Uncut: 30A3, 32A3 · · Small piece: 30A4, 32A4 · · Gap: 30A5, 31A1, 32A5 · · Through hole: 100 · · Manufacturing device: 101 · · Carry-in roller part: 102 · · · Unloading roller part: 110... First roller: 111... Outer peripheral surface: 112... Tooth: 113... Suction part: 120... Second roller: 121... Outer surface: 122... Receiving hole: 130... Guide roller: CP...Cutting position

Claims (6)

A first non-woven fabric,
A second non-woven fabric overlaid on the first non-woven fabric,
A first non-woven fabric piece defined by a non-linear cut that penetrates the first non-woven fabric in a thickness direction;
Equipped with
The first piece of non-woven fabric is adhered to the second non-woven fabric,
Absorbent article. The first non-woven fabric piece is connected to the first non-woven fabric by an uncut portion connecting both ends of the notch,
The absorbent article according to claim 1. The first non-woven fabric piece is cut from the first non-woven fabric along an uncut portion connecting both ends of the notch,
The absorbent article according to claim 1. A step of forming a non-linear cut in the first non-woven fabric in the thickness direction, and defining a first non-woven fabric piece defined by the notch and connected to the first non-woven fabric by a cut residue connecting both ends of the notch A method for manufacturing an absorbent article, comprising: Further comprising cutting the first nonwoven piece from the first nonwoven.
The method for manufacturing the absorbent article according to claim 4. A second non-woven fabric layered on the first non-woven fabric,
Bonding the first piece of nonwoven fabric to the second nonwoven fabric;
Further comprising cutting the first nonwoven piece from the first nonwoven after adhering the first nonwoven piece to the second nonwoven.
A method for manufacturing the absorbent article according to claim 4.

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