JP7090028B2 - Disposable items and manufacturing methods - Google Patents

Description

The present invention relates to so-called pants-type disposable wear articles and manufacturing methods.

In the invention of Patent Document 1 below, a plurality of elastic members are sandwiched between two sheets, and the two sheets and the elastic members are welded at a large number of joints continuous in a direction intersecting the expansion / contraction direction of the elastic members. There is.

JP2014-198180A (front page)

When the stretchable sheet of the prior art is used for the waistline portion of the pants-type worn article, the front and rear waistline portions are connected to each other by side seals at each end portion of the waist circumference portion. At the time of cutting at the time of individual separation after the side seal, the elastic member may be cut, and the elastic member may shrink (so-called snapback) to the joint portion closest to each end portion.

If the elastic member is not fixed to the sheet with sufficient bonding force at the joint closest to the end, the elastic member further contracts to the adjacent joint during snapback, resulting in a chain of snapbacks. Due to such a phenomenon, the yield of worn items decreases and the quality varies.

In the prior art, it has been proposed to reinforce the fixation of the elastic member with an adhesive in order to secure the fixing force of the elastic member. However, when an adhesive is used, the air permeability is impaired, and the elastic sheet around the waist loses flexibility due to the adhesive. Therefore, it becomes a factor that reduces the wearing feeling.

An object of the present invention is to provide a disposable wearable article and a manufacturing method which can suppress a decrease in the yield of the wearable article and a variation in quality and have an excellent wearing feeling.

Pants-type disposable wearable items
The worn article 1 includes a front waist circumference portion 3 and a rear waist circumference portion 3 adapted to cover the wearer's torso, and an absorbent main body 2 erected on the front and rear waist circumference portions 3.
Each of the front and rear waist circumference portions 3 is formed by sandwiching a plurality of elastic members 32 extending in the waist circumference direction X between two sheet pieces 31.
Three or more striped joint portions 41, 42, 43 for joining the two sheet pieces 31 to each other in a welded structure and fixing the elastic member 32 to the two sheet pieces 31 are the elastic member. It is continuously provided in the direction Dp intersecting the expansion / contraction direction Df of 32, and is provided continuously.
In a state where the elastic member 32 is contracted, a plurality of folds P are configured to appear between the three or more striped joints 41, 42, 43.
The front and rear waist circumferences 3 are overlapped with each other, and the end portion E3 of the front waist circumference portion 3 in the waist circumference direction X and the end portion E3 of the rear waist circumference portion 3 in the waist circumference direction X are welded to each other by a side seal 5. It is joined and
Of the three or more striped joints 41, 42, 43, the first distance S1 in the expansion / contraction direction Df between the first joint 41 closest to the side seal 5 and the side seal 5 is the third. The second of the expansion / contraction direction Df between the plurality of second joints 42 adjacent to each other in the intermediate portion between the ends E3 and E3 of the waistline 3 among the striped joints 41, 42, 43 of the present or more. It is smaller than the interval S2.

According to the present invention, the first interval S1 is smaller than the second interval S2. Therefore, even if the elastic member snaps back when the elastic member 32 is blown by the side seal or when the elastic member is individually cut after the side seal, the contraction force at the time of snapback is small. Therefore, the snapback elastic member 32 can be fixed at the first joint portion 41 to suppress the snapback chain.

FIG. 1 is a front view of a worn article according to the first embodiment of the present invention, in which the elastic member is stretched in the waist direction. FIG. 2 is a front view showing an unfolded state in which the ends of the worn article are not joined by side seals. 3A is an enlarged front view of the middle portion of the worn article, FIG. 3C is an enlarged front view of the end portion of the worn article, and FIGS. 3B and 3D are conceptual cross-sectional views showing the front and rear waistline folds, respectively. .. FIG. 4 is a schematic plan view showing a series of manufacturing methods. FIG. 5 is a plan view showing a method of generating a waistline continuum. FIG. 6 is a plan view showing a method of producing a pants-type worn article from a girth continuous body. FIG. 7A is a front view showing another example of the worn article, and FIG. 7B is an enlarged front view of an end portion of the worn article.

In FIGS. 1 to 3A, FIGS. 3C, 7A and 7B, each joint is shown in gray.
In FIGS. 1, 2, 3C, 7A and 7B, the side seals are shown in gray.
In FIG. 4, the joints and side seals are not shown.
In order to make the figure easier to see, the number of side seals and joints is reduced in each figure. Further, in each figure, the width and spacing of each joint with respect to the size of the worn article are shown larger than they actually are.

Preferably, among the three or more striped joints 41 to 43, the third spacing S3 in the expansion / contraction direction Df between the third joint 43 adjacent to the first joint 41 and the first joint 41. Is smaller than the second interval S2.

In this case, the distance between the joints near the side seals is narrow. Therefore, there is a high possibility that the elastic member can be fixed at the first or third joint near the side seal. Therefore, the snapback at the time of side sealing can be suppressed to be small.

Preferably, a plurality of fourth joint portions 44 for joining the two sheet pieces 31 to each other by a welding structure and fixing the elastic member 32 to the two sheet pieces 31 in the expansion / contraction direction of the elastic member 32. It is continuously provided in the direction Dp intersecting Df, and is provided continuously.
In the seal region A5 of the end portion E3 where the side seal 5 is arranged, the fourth joint portion 44 is arranged so as to overlap a part of the side seal 5.
In this case, snapback could be further suppressed.
In this case, the rigidity of the side seal 5 is usually larger than the rigidity of the joint portion, so that folds will not be formed in the seal region.

Preferably, in the seal region A5 of the end portion E3 where the side seal 5 is arranged, all of the three or more striped joint portions 41 to 43 are arranged without overlapping the side seal 5. In the case, the rigidity at the end portion will be small, and for example, the wearing feeling when the wearer lies down will be improved.

Preferably, a plurality of fifth joining portions 45 for joining the two sheet pieces 31 to each other by a welding structure and fixing the elastic member 32 to the two sheet pieces 31 in the expansion / contraction direction of the elastic member 32. It is continuously provided in the direction Dp intersecting Df, and is provided continuously.
The plurality of fifth joints 45 are arranged with respect to the third joint 43 on the opposite side of the expansion / contraction direction Df from the first joint 41.
Of the plurality of fifth joint portions 45, the fourth joint portion S4 in the expansion / contraction direction Df between the fifth joint portion 45 adjacent to the third joint portion 43 and the third joint portion, and the third joint portion 43. At least one of the fourth spacing S4 in the expansion / contraction direction Df between the plurality of fifth joining portions 45 in the vicinity of is smaller than the second spacing S2.
For example, when the joint portion is not provided in the seal region, the elastic member may be more likely to shrink toward the center side than the third joint portion during snapback as compared with the case where the joint portion is provided in the same region. unknown. Therefore, it would be preferable to provide the fifth joint in the vicinity of the third joint on the opposite side of the first joint.

In these cases, since the distance between the joints near the side seals is narrow, the height of the folds formed when the elastic sheet (two sheet pieces and the elastic member between them) contracts is formed in the intermediate portion. The folds near the side seals are smaller (lower in height) than the folds. Therefore, the vicinity of the side seal can be easily flattened by slightly stretching the elastic sheet. Therefore, the air permeability in the direction of penetrating the sheet in the vicinity of the side seal will be better than that of the intermediate portion where the high folds are densely packed.

Preferably, the width Δ of the expansion / contraction direction Df of at least one of the joint portions is set to 0.2 mm or more and less than 1.0 mm.
Preferably, the width Δ of the expansion / contraction direction Df of at least the first joint portion 41 of the joint portions is set to 0.2 mm or more and less than 1.0 mm.
Preferably, the width Δ of the expansion / contraction direction Df of at least the first and third joint portions 41 and 43 of the joint portions is set to 0.2 mm or more and less than 1.0 mm.

In these cases, since the width Δ of each joint is small, the pitch of the folds formed between the adjacent joints can be reduced.

In particular, in the vicinity of the side seal where the distance between the joints is small, the small width Δ will make it possible to beautifully form small folds.

Further, the elastic member moves at a predetermined speed with respect to a welding device such as a horn of an ultrasonic welding device, and therefore, when the individual parts are viewed, they are heated for a certain period of time regardless of the width. However, if the width is large, the portion to be heated becomes continuously long. Therefore, heat may be accumulated and the sheet or the elastic member may be excessively heated.

Here, when the width Δ in the expansion / contraction direction of each joint is 0.2 mm or more and less than 1.0 mm, the width Δ of the joint at least at the portion intersecting the elastic member is 0.2 mm or more and less than 1.0 mm. It means that the width Δ is 0.2 mm or more and less than 1.0 mm for a portion having a majority (half or more) in the length direction of the joint portion between the elastic members, and is preferably the joint portion. The width Δ is set to 0.2 mm or more and less than 1.0 mm for a portion having a length of most (80% or more) in the length direction.

That is, the width Δ of the joint portion may be 1.0 mm or more in some parts. For example, when the two joints intersect with each other, the width Δ of the joints of the intersecting portions may be 1.0 mm or more.
On the other hand, the width Δ of the joint portion may be less than 0.2 mm in some parts.

As shown in FIG. 1, the width Δ of the expansion / contraction direction Df of the joint portion is set to 0.2 mm or more and less than 1.0 mm. In the case of this example, the two sheets or the sheets and the elastic member F will be beautifully and uniformly bonded to each other at the joint.

From the above-mentioned viewpoint that the sheet and the elastic member may be excessively heated, the width Δ of the joint portion is preferably 0.95 mm or less, more preferably 0.9 mm or less, and most preferably 0.85 mm or less. ..

On the other hand, in general, the bonding force between the elastic member and both sheet pieces will be weaker than the bonding force between the sheet pieces. Therefore, if the width Δ of the joint portion is too small, the joint force between the elastic member and both sheet pieces tends to be insufficient.
From this point of view, the width Δ of the joint portion is preferably 0.3 mm or more, more preferably 0.35 mm or more, and most preferably 0.4 mm or more.

The elastic member may be linear or cord-shaped. For example, the elastic member may be a multi-strand in which a plurality of rubber threads (fibrous elastic bodies) are assembled in a bundle. Examples of the material of the rubber thread include polyurethane.

Due to the contraction force of the elastic member, the sheet pieces around the waist form a large number of folds P in a state where the elastic member is contracted. The sheet piece may be, for example, a thermoplastic non-woven fabric in which a large number of thermoplastic fibers are laminated.

The method for manufacturing the worn article includes a step in which a plurality of continuous elastic members F are sandwiched between two continuous sheets W4 to generate a pair of waistline continuous bodies 40 serving as the front and rear waistline portions 3.
A step of transporting the pair of waistline continuous bodies 40 in a transport direction L along the waistline direction X in parallel with each other.
A step of arranging the absorbent main body 2 so that the absorbent main body 2 is erected on the pair of waistline continuous bodies 40 during the transportation to generate a continuous laminated body W1.
A folding step of folding the continuous laminated body W1 in two in the absorbent main body 2 so that the pair of waistline continuous bodies 40 overlap each other.
A step of welding the pair of waist circumference continuous bodies 40 to each other to form two rows of the side seals 5 and 5 one after another at a portion of the front and rear waist circumference portions 3 at the end portion E3 in the transport direction L.
A step of cutting the pair of waistline continuums 40 one after another between the two rows of side seals 5 and 5 to obtain individual worn articles 1 is provided.
The step of generating each waist circumference continuous body 40 is
The continuous sheets W4 are connected to each other intermittently in the transport direction L, so as to cross the plurality of continuous elastic members F, and so that the first interval S1 is smaller than the second interval S2. Three or more striped joints 41 to 43 are welded to each other.

When the waistline continuous body 40 is cut one after another between the two rows of side seals 5 and 5, the continuous elastic member F is also cut. The cut continuous elastic member F snaps back to the first joint portion 41. If the joining force of the first joining portion 41 is not large enough, the snapback chain is likely to occur.
On the other hand, when the first interval S1 is small, the snapback chain can be suppressed.

The features described / and illustrated in connection with each of the above embodiments or the following embodiments are the same or similar in one or more other embodiments or other embodiments, and / or It can be used in combination with or in place of the features of other embodiments or examples.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the examples and drawings are for illustration and illustration purposes only and should not be used to define the scope of the invention. The scope of the present invention is determined only by the claims. In the accompanying drawings, the same part number in multiple drawings indicates the same or equivalent part.

Hereinafter, the structure of the worn article 1 according to the first embodiment of the present invention will be described with reference to the drawings.
1 to 3D show Example 1.

As shown in FIGS. 1 and 2, the worn article 1 of the first embodiment has a symmetrical shape and structure, and includes an absorbent main body 2 and front and rear waist circumferences 3. The absorbent body 2 covers the front torso of the wearer and extends in the waist circumference direction X, the torso that covers the rear torso of the wearer and extends in the waist circumference direction X, and the crotch that covers the crotch between the two torso parts. It has a part 22.

The crotch portion 22 extends in the vertical direction Y orthogonal to the waist circumference direction X. The absorbent body 2 constitutes part or all of the crotch portion 22.

As shown in FIG. 1, in the state of the finished product, the crotch portion 22 is folded in two at a line parallel to the waist circumference direction X. As a result, the ends E3 of the front and rear waist circumference portions 3 in FIG. 2 in the waist circumference direction X overlap each other as shown in FIG. The worn article is a pants type, and the ends of the front waist circumference portion 3 and the rear waist circumference portion 3 in the waist circumference direction X are welded to each other.

The absorbent body 2 of FIG. 2 is provided with an absorbent core (not shown). This absorption core absorbs body fluids. The absorption core is sandwiched between the top sheet and the back sheet. Each sheet and absorption core are laminated to each other.

The top sheet is made of a thin liquid-permeable non-woven fabric and covers the skin surface of the absorbent core. A cuff (not shown) may be provided on the top sheet.

The back sheet covers the non-skin surface of the absorbent core and is made of a liquid-impermeable resin sheet. Each waistline portion 3 is attached to each end portion of the absorbent body 2 in the vertical direction Y.

Each waistline portion 3 projects from the absorbent body 2 in the waistline direction X. That is, the waist circumference portion 3 protrudes from the crotch portion 22 in the waist circumference direction X and extends in the waist circumference direction X from both edge portions (ends in the waist circumference direction) E2 of the absorbent main body 2.

Each waistline 3 is provided with an elastic member 32 for fitting the worn article 1 to the wearer. As the elastic member 32, for example, a material containing a plurality of thread rubbers, flat rubbers, or thermoplastic resins can be adopted. Further, the elastic member 32 may be invalidated (there is no contraction force) at the portion overlapping with the absorbent main body 2. Each elastic member 32 may extend in the waist circumference direction X in parallel with each other.

The absorbent body 2 may be formed with a leg circumference portion (not shown) confined along the wearer's leg portion. Another elastic member made of, for example, rubber thread may be provided along the leg circumference and the portion connected to the leg circumference of the waist circumference portion 3 along the leg circumference of the wearer.

The absorbent main body 2 is attached to the skin surface of the waist circumference portion 3.
In the present specification, the "skin surface" refers to the surface facing the wearer's skin when the worn article 1 is worn, and the "non-skin surface" refers to the surface opposite to the skin surface.

Next, further details of the worn article 1 will be described.

In FIG. 2, each of the front and rear waist circumference portions 3 is formed by sandwiching a plurality of elastic members 32 extending in the waist circumference direction X between two non-woven fabric sheet pieces 31. In a large number of first to third and fifth joint portions 41 to 43, 45 shown in gray, the two sheet pieces 31 are welded to each other. As shown in FIGS. 3A and 3C, the large number of joint portions 41 to 43, 45 overlap with the elastic member 32, and as shown in FIGS. 3B and 3D, the joint portions 41 to 43, 45 join each other. The two sheet pieces 31 around each waist are formed with folds (gathers) P by the contraction force of the elastic member 32. That is, in a state where the elastic member 32 is contracted, a plurality of folds P appear between the plurality of joint portions 41, 42, 43, 45. In addition, in FIGS. 3B and 3D, the illustration of the elastic member sandwiched between the two sheet pieces is omitted.

As shown in FIG. 2, the large number of the joint portions 41 to 43, 45 are parallel to each other in the vertical direction Y (intersection direction Dp) orthogonal to the waist circumference direction X (expansion / contraction direction Df of the elastic member 32) (the above). They are arranged in stripes (separated from each other in the waist direction). That is, the large number of the joint portions 41 to 43, 45 are intermittently arranged in the waist circumference direction X, and are continuously (continuously) in the vertical direction Y orthogonal to the plurality of elastic members 32. Have been placed.

As shown in FIG. 1, in a large number of side seals 5 shown in gray, the front and rear waist circumference portions 3 are welded and joined to each other. The large number of side seals 5 are intermittently arranged in the vertical direction Y at the end portion E3 of the waist circumference direction X of the front and rear waist circumference portions 3.
In the case of this example, the rows of the first to third and fifth joints 41 to 43, 45 extending in the vertical direction Y and the side seals 5 are arranged parallel to each other and separated from each other in the waist circumference direction X. ..

When each worn article is cut into units of individual worn articles, the elastic member 32 is also cut, so-called snapback occurs at a portion where the side seal 5 and the elastic member 32 do not overlap, and the elastic member 32 contracts. do.
Further, as shown in FIG. 3C, the side seals 5 are densely and intermittently arranged in the vertical direction Y (intersecting direction Dp), and partially overlap with the elastic member 32. Therefore, the elastic member 32 may be blown at the side seal 5, and in such a case, the end portion of the elastic member 32 contracts due to the snapback.

In FIG. 1, a first interval S1 is set between the first joint portion 41 and the side seal 5. A second interval S2 is set between the second joint portions 42.

The first interval S1 in FIG. 1 is the first of the expansion / contraction direction Df between the first joint portion 41 closest to the side seal 5 and the side seal 5 among the plurality of joint portions 41, 42, 43, 45. The interval S1. The second interval S2 is the expansion and contraction of the second joint portions 42 adjacent to each other in the intermediate portion between the end portions E3 and E3 of the waist circumference portion 3 among the plurality of joint portions 41, 42, 43, 45. The second interval S2 in the direction Df.
The intermediate portion means a central region of the waist circumference portion in the waist circumference direction X excluding the end portion E3 and its vicinity. For example, in FIG. 1, a plurality of the second joint portions 42 are provided in the region of the waist circumference portion corresponding to the width of the waist circumference direction X of the absorbent main body 2.

The first interval S1 is smaller than the second interval S2. The second interval S2 may be set to, for example, about 4 to 6 mm.

In FIG. 1, a third interval S3 is set between the expansion / contraction direction Df between the third joint portion 43 adjacent to the first joint portion 41 and the first joint portion 41 among the plurality of joint portions 41 to 43. Has been done. Further, between the fifth joint portion 45 adjacent to the third joint portion 43 and the expansion / contraction direction Df between the third joint portion, and between the fifth joint portions 45 in the vicinity of the third joint portion 43. A fourth interval S4 is set between the expansion and contraction directions Df.

These third interval S3 and fourth interval S4 are smaller than the second interval S2. The third interval S3 and the fourth interval S4 may be set to, for example, about 2 to 3 mm.

In FIG. 1, the width Δ of the expansion / contraction direction Df of each of the joint portions 41 to 43 and 45 may be set to, for example, about 0.5 to 0.7 mm.

Next, a method for manufacturing the worn article 1 will be described.

As shown in FIG. 4, a plurality of continuous elastic members F extending in the transport direction L are transported in the transport direction L in a state of being stretched in the transport direction L.

In the nip roll (not shown), the continuous elastic member F is sandwiched between two continuous sheets (for example, continuous non-woven fabric) W4 having a pair of side edge portions 4E extending in the transport direction L, and the continuous sheets W4 overlap each other. Join to form a continuum 40.

That is, the plurality of continuous sheets W4 are connected to each other intermittently in the transport direction L of FIG. 5 and so as to cross the plurality of continuous elastic members F. At 43 and 45, they are welded and joined to each other. Here, as shown in FIG. 1, the welding joint is executed so that the first interval S1, the third interval S3, and the fourth interval S4 are smaller than the second interval S2. The welded joint may be heat-sealed (heat welded) or welded by ultrasonic energy.

The continuous body 40 may be invalidated by cutting a part of the continuous elastic member F at a portion overlapping the absorbent main body 2. The absorbent body 2 is attached to the invalidated area in a later step.

As shown in FIG. 5, the continuum 40 having the pair of side edge portions 4E is slit by a slitter (not shown) along the transport direction L while being transported in the transport direction L. As a result, the continuous body 40 becomes a pair of waistline continuous bodies 40 which are front and rear waistline portions. After the slit, the two girth continuums 40 are relatively moved in the vertical direction Y so as to be separated from each other in the vertical direction Y orthogonal to the transport direction L.

After that, while the pair of waistline continuous bodies 40 are transported in the transport direction L substantially in parallel with each other, the absorbent main body 2 straddles the pair of waistline continuous bodies 40 and is partially connected to each of the waistline continuous bodies 40. The absorbent main body 2 is arranged (erected) so as to overlap each other, and a continuous laminated body W1 is generated.

After that, as shown in FIG. 6, the continuous laminated body W1 is folded in two in the absorbent main body 2 so that the pair of waistline continuous bodies 40 overlap each other.

As shown in FIG. 6, the first joint portions 41 adjacent to each other among the plurality of joint portions at the end E3 (FIG. 1) of the portion serving as the front and rear waist circumference portions 3 in the transport direction L. In the side seal 5 between the two, the pair of waistline continuous bodies 40 are welded and joined to each other. The welded joint may be welded by the ultrasonic energy of the ultrasonic horn or may be heat-sealed.

After that, the continuous laminated body W1 of FIG. 6 is cut into a size (unit) for each worn article 1 along a virtual cutting line shown by a long-dotted chain line. That is, in order to generate individual worn articles 1 one after another, the continuous laminated body W1 is cut one after another in the vertical direction Y between the absorbent main bodies 2 adjacent to each other in the transport direction L. In this way, the pair of waistline continuums 40 are cut one after another at the position of the end portion E3 in the waistline direction X (FIG. 1) of the worn article 1 and between the side seals 5 and 5 in the two rows. As a result, the individual pants-type worn article 1 shown in FIG. 1 is obtained.

7A and 7B show Example 2. Hereinafter, the structure different from that of the first embodiment will be mainly described, and the description of the same structure as that of the first embodiment will be omitted.

In the case of this example, the pair of sheets 3 and 3 are welded to each other also in the fourth joint portion 44 shown in FIG. 7B. The fourth joint portion 44 overlaps with the side seal 5.
That is, in the fourth joint portion 44, the two sheet pieces 31 are welded to each other, the elastic member 32 is fixed to the two sheet pieces 31, and the elastic member 32 is in the expansion / contraction direction Df. It is continuously provided in the intersecting direction Dp. In the seal region A5 of the end portion E3 where the side seal 5 is arranged, the fourth joint portion 44 is arranged so as to overlap a part of the side seal 5. In the case of this example, two rows of the fourth joints 44 are provided in the seal region 5A.

On the other hand, in the first embodiment, as shown in FIG. 2, in the seal region A5 of the end portion E3 where the side seal 5 is arranged, all of the plurality of joint portions are arranged without overlapping the side seal 5. ing.

In each of the above examples, the joint portions 41 to 45 extend in a direction parallel to each other and orthogonal to the waist circumference direction X. However, the striped joint may extend in a direction inclined with respect to the orthogonal direction Y, and may further extend in two diagonal directions in the direction in which the joints intersect each other.

As described above, a suitable embodiment has been described with reference to the drawings, but those skilled in the art will easily assume various changes and modifications to the extent obvious by looking at the present specification.
For example, this worn item may not have a cuff or the like. Further, the tension of the elastic member may be invalidated at a portion of the waist circumference member other than the portion that wraps with the absorbent main body.
Further, the waistline continuous body 40 does not have to be formed by being slit in two.
Accordingly, such changes and amendments are to be construed as being within the scope of the invention as defined by the claims.

The present invention can be applied to pants-type worn articles.

1: Worn items 2: Absorbent body 22: Crotch
3: Girth section 31: Sheet piece 32: Elastic member 40: Girth continuum 41: First joint 42: Second joint 43: Third joint 44: Fourth joint 45: Fifth joint 5: Side Seal E2: Edge E3: End A5: Seal area Df: Expansion / contraction direction F: Continuous elastic member L: Transport direction P: Folds S1, S2, S3: Spacing X: Waist circumference direction Y: Orthogonal direction (vertical direction)
W1: Continuous laminate W4: Continuous sheet Δ: Width of joint

Claims (8)

Pants-type disposable wearable items
The worn article 1 includes a front waist circumference portion 3 and a rear waist circumference portion 3 adapted to cover the wearer's torso, and an absorbent main body 2 erected on the front and rear waist circumference portions 3.
Each of the front and rear waist circumference portions 3 is formed by sandwiching a plurality of elastic members 32 extending in the waist circumference direction X between two sheet pieces 31.
Three or more striped joint portions 41, 42, 43, in which the two sheet pieces 31 are joined to each other by a welding structure and the elastic member 32 is joined to and fixed to the two sheet pieces 31, are formed. The elastic member 32 is continuously provided in the direction Dp intersecting the expansion / contraction direction Df.
In a state where the elastic member 32 is contracted, a plurality of folds P are configured to appear between the three or more striped joints 41, 42, 43.
The front and rear waist circumferences 3 are overlapped with each other, and the end portion E3 of the front waist circumference portion 3 in the waist circumference direction X and the end portion E3 of the rear waist circumference portion 3 in the waist circumference direction X are welded to each other by a side seal 5. It is joined and
With the elastic member 32 stretched in the waist circumference direction X, the first joint portion 41 and the side seal 5 closest to the side seal 5 among the three or more striped joint portions 41, 42, 43. A plurality of first intervals S1 in the expansion / contraction direction Df with and on the three or more striped joints 41, 42, 43 adjacent to each other in the intermediate portion between the ends E3 and E3 of the waist circumference 3. It is smaller than the second interval S2 of the expansion / contraction direction Df between the second joint portions 42 of the above.
With the elastic member 32 stretched in the waist circumference direction X, the third joint portion 43 and the first joint portion adjacent to the first joint portion 41 among the three or more striped joint portions 41 to 43. A worn article in which the third interval S3 in the expansion / contraction direction Df with 41 is smaller than the second interval S2. In claim 1,
A plurality of fourth joints 44 for joining the two sheet pieces 31 to each other in a welded structure and fixing the elastic member 32 to the two sheet pieces 31 intersect in the expansion / contraction direction Df of the elastic member 32. It is provided continuously in the direction Dp,
A worn article in which the fourth joint 44 is arranged so as to overlap a part of the side seal 5 in the seal region A5 of the end portion E3 where the side seal 5 is arranged. In claim 1,
A worn article in which all of the three or more striped joints 41 to 43 are arranged without overlapping the side seal 5 in the seal area A5 of the end portion E3 where the side seal 5 is arranged. In claim 3,
A plurality of fifth joining portions 45 for joining the two sheet pieces 31 to each other by a welding structure and fixing the elastic member 32 to the two sheet pieces 31 intersect with each other in the expansion / contraction direction Df of the elastic member 32. It is provided continuously in the direction Dp,
The plurality of fifth joints 45 are arranged on the opposite side of the expansion / contraction direction Df from the first joint 41 with respect to the third joint 43.
Of the plurality of fifth joint portions 45, the fourth joint portion S4 in the expansion / contraction direction Df between the fifth joint portion 45 adjacent to the third joint portion 43 and the third joint portion, and the third joint portion 43. An article to be worn, wherein at least one of the fourth intervals S4 in the expansion / contraction direction Df between the plurality of fifth joints 45 in the vicinity of is smaller than the second interval S2. In any one of claims 1, 3 and 4,
A worn article in which the width Δ of the expansion / contraction direction Df of at least one of the joints is set to 0.2 mm or more and less than 1.0 mm. In any one of claims 1, 3 and 4,
A worn article in which at least the width Δ of the expansion / contraction direction Df of the first joint portion 41 of the joint portions is set to 0.2 mm or more and less than 1.0 mm. In any one of claims 1, 3 and 4,
A worn article in which the width Δ of the expansion / contraction direction Df of at least the first and third joints 41 and 43 of the joints is set to 0.2 mm or more and less than 1.0 mm. The method for manufacturing a worn article according to claim 1.
A step in which a plurality of continuous elastic members F are sandwiched between two continuous sheets W4 to generate a pair of waist circumference continuous bodies 40 serving as the front and rear waist circumference portions 3.
A step of transporting the pair of waistline continuous bodies 40 in a transport direction L along the waistline direction X in parallel with each other.
A step of arranging the absorbent main body 2 so that the absorbent main body 2 is erected on the pair of waistline continuous bodies 40 during the transportation to generate a continuous laminated body W1.
A folding step of folding the continuous laminated body W1 in two in the absorbent main body 2 so that the pair of waistline continuous bodies 40 overlap each other.
A step of welding the pair of waist circumference continuous bodies 40 to each other to form two rows of the side seals 5 and 5 one after another at a portion of the front and rear waist circumference portions 3 at the end portion E3 in the transport direction L.
A step of cutting the pair of waistline continuums 40 one after another between the two rows of side seals 5 and 5 to obtain individual worn articles 1 is provided.
The step of generating each waist circumference continuous body 40 is
The first interval S1 is the second interval S1 intermittently in the transport direction L, so as to cross the plurality of continuous elastic members F, and in a state where the elastic member 32 is stretched in the waist circumference direction X. The continuous sheets W4 are connected to each other so that the third interval S3 is smaller than the second interval S2 in a state where the elastic member 32 is stretched in the waist circumference direction X so as to be smaller than the interval S2. A manufacturing method including a step of welding and joining to each other at three or more striped joint portions 41 to 43.

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