JP4136975B2 - Manufacturing method of disposable pants - Google Patents

Description

  The present invention relates to a method for producing disposable pants that can also be used as a disposable diaper.

  In recent years, there has been an increasing demand for disposable pants that fit the wearer's body by providing shrinkage around the waist, waist and legs, and these disposable pants are increasingly used for both children and adults. There has been a lot to be done.

  By the way, since the said disposable pants can be removed like underwear, it is easy to remove for a moving child, and it is also easy to remove for an adult who needs excretion care. Furthermore, for adults, it is possible to prevent a diaper from being repelled, which is advantageous in that it can also be used for psychological care.

  In addition to being able to take off like underwear as disposable pants having such advantages, in some cases it is not necessary to take off all clothing and pass legs through the leg holes of the pants when removing It has been proposed (Japanese Patent Publication No. 2003-526406).

As shown in FIGS. 8 and 9, this disposable pant has a perforation (cutting line) 103 for breaking on a band member 102 for the front abdomen to which the front end 101 of the crotch 100 is detachably attached. The band member 102 can be opened and closed left and right by breaking the perforation 103, and the front end 101 of the crotch 100 can be removed.
Special table 2003-526406 gazette

  However, as in Patent Document 1, when a cutting line made of a perforation is formed on the belt member, the cutting line may break during the manufacture of the pants.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a method for manufacturing disposable pants that can prevent breakage of a cutting line during the manufacturing process.

  The manufacturing method of the disposable pants according to the invention of claim 1 is such that both the front and back portions of the front abdomen and the back portion are joined and the front and rear ends of the absorbent body are connected to the front abdomen and the back portion. A part is formed, and the front abdomen and the front end of the absorber body are detachably joined and the front abdomen can be opened and closed left and right. Using the front abdominal band member having a width dimension wider than the vertical length of the front abdomen, with the left and right direction of the front abdomen as the longitudinal direction, cutting in the width direction while leaving both ends in the width direction on the band member A cutting line forming step for forming a line, and two joining parts joined to each of both sides sandwiching the cutting line of the band member in the longitudinal direction, and both joining parts are overlapped and the overlapping part is Left above the front abdomen, joined detachably A step of joining the picking unit to the band member so as to straddle the cutting line, and cutting off a surplus portion at the side edge in the width direction of the band member to which the picking unit is joined And a step of joining the front end portion of the absorber body so as to be detachable in a state of being overlapped at a position near the cutting line in the band member.

  The manufacturing method of the disposable pants according to the invention of claim 2 is the manufacturing method of the disposable pants according to claim 1, wherein the belt member for the front abdomen is attached to the sheet and to the sheet in the longitudinal direction. And a weakening treatment step of weakening the elastic member of the band unit to be joined by a predetermined length before the cutting line forming step. It is characterized by that.

  Here, the weakening of the elastic member includes not only the case where the elastic force of the elastic member is completely lost, but also the case where the elastic force of the elastic member is weakened.

  In the case of the invention of claim 1, since the cutting line in the width direction is formed in the state in which the both ends in the width direction are left on the band member, the both end parts of the band member where the cutting line does not exist are cut lines during the production. Is prevented from breaking. In addition, since the knob unit is joined so as to straddle the cutting line after the cutting line is provided, the knob unit serves as a reinforcing member, and breakage of the cutting line during the manufacturing can be further prevented. And, after the knob unit is joined, if the remainder is cut off and removed, it becomes a band member having a predetermined vertical dimension (width dimension), and if the front end of the absorber body is joined to be detachable, Disposable pants whose front abdomen can be opened and closed left and right can be obtained.

  In the case of the invention of claim 2, an elastic member is arranged on the belt member in order to obtain a stretchable front abdomen. In that case, the formation of the cutting line and the attachment of the knob unit are caused by the expansion and contraction of the elastic member. In order to prevent this, the attachment of the knob unit and the formation of the cutting line below the knob unit can be easily carried out by weakening the elastic member of the portion where the knob unit is to be installed in advance. become able to.

  FIG. 1 is a front view showing a disposable pant according to an embodiment of the present invention, FIG. 2 and FIG. 3 are front views showing a state in which left and right belt members are deployed, and FIG. 4 shows a state in which the disposable pants are completely deployed. FIG.

  The disposable pant 1 has a front abdomen P, a back part Q, and a crotch part R. The front abdominal part P is formed in a belt shape in which an outer surface side sheet and a skin surface side sheet are joined with elastic members 5 and 6 (described later) sandwiched therebetween in an expanded state, and the vertical width is constant. In the back portion Q, the outer surface side sheet and the skin surface side sheet are joined with elastic members 5, 6, and 7 described later sandwiched therebetween in an extended state, the upper side and the lower side are parallel, and the upper sides of the left and right sides are parallel. And it is formed in a nearly hexagonal shape with the lower side of the left and right sides inclined. The outer edges of both side portions of the front abdominal part P are joined to the parallel upper side parts of the left and right sides of the back part Q by the side joining parts 14.

  The crotch portion R is joined to the inner surface of the back portion Q of the rectangular absorbent body 4 having a constant left and right width so that the front end portion of the absorbent body 4 can be engaged and disengaged inside the front abdomen P. It is formed by joining. In addition, the crotch part R is comprised in the part between the front-end part of the absorber main body 4, and a rear-end part.

  A waist opening 2 is formed in a portion surrounded by the front abdomen P and the back portion Q, and left and right leg openings 3 are formed in a portion surrounded by the front abdomen P, the back portion Q and the crotch R. ing. The waist elastic member 5 is disposed along the upper edge of the opening 2 so as to be stretched when worn on the front abdominal part P and the back part Q forming the opening 2. The leg elastic member 7 is disposed along the edge of the leg opening 3 so that the leg elastic member 7 is stretched when worn on the back portion Q and the absorbent body 4 forming the leg opening 3. These elastic members 5 and 7 serve to fit the disposable pants 1 to the wearer's body and prevent leakage from the openings 2 and 3. Also, the front abdomen P and the back part Q are arranged below the waist elastic member 5 so that the body elastic member 6 is extended when worn so that it can be easily fitted around the wearer's abdomen. It is installed. In the back portion Q, the lower end of the elastic member 6 is positioned at a substantially central position in the vertical direction, and the leg elastic member 7 is disposed below the elastic member 6.

  The front abdominal part P is formed with a cutting line 28 that can be opened and closed left and right as shown in FIGS. 2 and 3 at a substantially central position, and when the cutting line 28 is cut, The abdomen P can be separated into a right band member 8 and a left band member 9 having an inner edge 15.

  A knob unit 10 is provided on the outer surface side of the front abdominal part P so as to straddle the cutting line 28. This knob unit 10 is for making it easy to grasp the inner edges 15 of the band members 8 and 9 to be separated, and is composed of an outer surface side member 11 and a skin surface side member 12 as joint portions. The side member 12 is joined to a position near the inner edge 15 of the left band member 9, and one outer surface side member 11 is joined to the right band member 8 in a state where a part protrudes outward from the inner edge 15.

  The portion of the outer surface side member 11 that protrudes to the outside is overlapped with the portion near the inner edge of the skin surface side member 12 with the skin surface side member 12 facing inward, and the overlapping portion is the first fastening means. Is provided. In the illustrated example, a hook-and-loop fastener having a hook member 21 and a loop member 22 is used as the first fastening means, and the hook member 21 is disposed on the inner side of the outer surface side member 11 overlapping the skin surface side member 12. The loop members 22 are respectively attached to the outer surfaces of the skin surface side member 12 overlapping the outer surface side member 11. This hook-and-loop fastener is joined so that it can be engaged and disengaged by overlapping the outer surface side member 11 and the skin surface side member 12 as described above. In addition, the position where the hook member 21 and the loop member 22 overlap is set to be approximately the center of the front abdominal part P.

  Therefore, the front abdominal part P is separated into the band members 8 and 9 by removing the hook member 21 and the loop member 22 of the knob unit 10 and breaking the cutting line 28, so that these band members 8 and 9 can be opened to the left and right. it can. 2 shows a state in which the right band member 8 is opened, and FIG. 3 shows a state in which the left band member 9 is also opened. Further, a protruding portion 13 is provided on the inner edge side of the outer surface side member 11 so as to be easily grasped.

  Here, when the hook member 21 and the loop member 22 make a pair and the hook fastener 21 and the loop member 22 are strongly pressed together, the hook member 21 and the loop member 22 are locked so that they are not easily detached from each other. When the hook member 21 and the loop member 22 are strongly peeled off by hand, the hook member 21 and the loop member 22 are disengaged from each other, which is also called a mechanical fastener.

  Contrary to the above, the hook member 21 may be provided on the skin surface side member 12 and the loop member 22 may be provided on the outer surface side member 11 side. The loop member 22 of the surface fastener as the first fastening means is appropriately selected from a knitted fabric, a woven fabric, a non-woven fabric or the like having a function as a loop portion. In this case, the loop member 22 can be omitted by using the knitted fabric, woven fabric, nonwoven fabric, or the like as the sheet itself to which the loop member 22 is adhered. Further, instead of the hook-and-loop fastener, a pair of detachable joining means selected from an adhesive and a release agent, a button and a button hole, and a string can be used.

  The absorbent body 4 is configured as shown in FIG. That is, the upright base end portions 25a of the side sheets 25 are overlapped on both ends of the top surface 24 on the skin surface side, and both are joined by hot melt or the like, and between the top sheet 24 and the back sheet 27 on the outer surface side. The absorbent core 23 is sandwiched between the outer end portions of the side sheets 25 and the end portions of the back sheet 27 with the leg elastic member 7 interposed therebetween. Further, the inner end portion of each side seat 25 is folded back and overlapped with the elastic member 26 inside, and the overlapping portion 25b is joined by heat sealing or the like. The elastic member 26 is for raising the inner edge of each side seat 25 in a direction toward the wearer. In addition, it is more preferable to provide a non-woven fabric having a touch like a cloth as shown by a two-dot chain line in FIG.

  A hook member 18 of a hook-and-loop fastener as second fastening means is attached to the outer surface side of the front end portion 17 of the absorbent body 4 that is detachably joined to the inside of the front abdomen P (see FIG. 3). The hook member 18 is detachably joined to the skin inner side of the front abdomen P, in this illustrated example, to the skin inner side of the left band member 9. In addition, the skin inner side of the left side belt member 9 is made of a material that functions as a loop member of a hook-and-loop fastener, for example, a knitted fabric, a woven fabric, a non-woven fabric, or the like. The second fastening means can be replaced with other means in the same manner as the first fastening means.

  Therefore, the hook member 21 and the loop member 22 of the knob unit 10 are removed, and the cutting line 28 is broken to separate the band members 8 and 9, the band member 8 is opened to the right side, and the hook member 18 of the second fastening means. The band member 9 can be opened to the left by peeling the band member 9 from the left side. In contrast to the above, the cutting line 28 remains broken, but it can be restored to its original state. At this time, the inner edges 15 of the band members 8 and 9 are brought into contact with each other.

  In FIG. 4, the lower side 20 of the back part Q is positioned at the middle in the front-rear direction of the absorbent body 4, but the lower side 20 may be extended toward the lower side or may be contracted toward the upper side 19. .

  Here, constituent materials of each member will be described.

[Skin side sheet of front abdominal part P and back part Q]
For the skin side sheet, a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) is used. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² . Also, only the inner surface is hydrophilized [surfactant is applied or a layer of hydrophilic fibers (rayon, cotton, etc.) is made. In this case, the touch when touching the skin is improved, and a sweat absorption effect can be expected.

[Outer seats of front abdomen P and back Q]
For the outer sheet, a breathable water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) is used. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² .

[Absorption core 23]
The absorbent core 23 is formed by mixing an absorbent core obtained by mixing a granular polymer water absorbent with a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber into a coated sheet such as a paper sheet such as tissue paper or a liquid-permeable nonwoven fabric sheet. It is an absorbent body that is wrapped in and molded into a predetermined shape (rectangular shape, hourglass shape, gourd shape, etc.). A sheet-like absorbent body (for example, an air-laid absorbent body) obtained by forming the fiber or the polymer water-absorbing body into a sheet shape may be used after being formed into a predetermined shape. In order to maintain the shape even when the wearer walks or rolls over, shape retention means (application of hot melt adhesive, mixing of synthetic fibers) is applied to the hydrophilic fiber aggregate layer or sheet. It doesn't matter.

[Top sheet 24]
The top sheet 24 is preferably a liquid-permeable nonwoven material. For example, a nonwoven material using hydrophilic fibers (cellulose, rayon, cotton, etc.) or a surface of hydrophobic fibers (polypropylene, polyester, polyamide, nylon, etc.) is treated with a surfactant to make the nonwoven material liquid-permeable. Used. Preferably, it is a liquid-permeable nonwoven fabric material (point bond nonwoven fabric, air-through nonwoven fabric) having a basis weight of 10 to 25 g / m ² which is made hydrophobic by treating hydrophobic fibers with a surfactant.

[Backsheet 27]
The back sheet 27 is made of a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.), plastic film (which may be breathable or non-breathable, but a preferred embodiment is a breathable plastic film. Or a composite material thereof. A breathable polyethylene film having a basis weight of 15 to 40 g / m ² is preferable.

[Side sheet 25]
The side sheet 25 is made of a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.). Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² .

[Elastic members 5, 6, 7, 26]
Each elastic member 5, 6, 7, 26 is made of an elastic stretch material (polyurethane yarn, polyurethane film, natural rubber, etc.) that is usually used for disposable diapers, and is between an outer sheet and a skin sheet. In the stretched state, it is attached by a suitable attachment means such as hot melt adhesive, thermal bonding, ultrasonic bonding or the like. A rubber-based hot melt adhesive is preferred. The elastic members 5, 6, 7, and 26 are preferably provided with polyurethane yarn having a fineness of 300 to 2000 dtex and stretched by 1.1 to 5.0 times.

[Picking unit 10]
The materials used for the outer surface side member 11 and the skin surface side member 12 of the knob unit 10 can be appropriately selected from nonwoven fabric materials, woven fabric materials, knitted fabric materials, and plastic materials. Especially, the nonwoven fabric material manufactured by the combination of 2 or 3 or more of the spun bond method, the air through method, the point bond method, the melt blow method, the airlaid method, or these manufacturing methods is preferable. Furthermore, the nonwoven fabric material by the spunbond method of 30-100 g / m < ² > of fabric weight or the SMS method which combined the spunbond method and the melt blow method is preferable from the point of intensity | strength. Most preferred is a nonwoven material produced by a spunbond method having a basis weight of 50 to 85 g / m ² . The material can be appropriately selected from synthetic fibers such as polypropylene, polyethylene, polyester and polyamide, and natural fibers such as rayon, pulp and silk. Preferably, synthetic fibers such as polypropylene, polyethylene and polyester can be used. Those having a main component are strong and suitable. Most preferred is polyester fiber.

  In addition, it is desirable that the knob unit 10 is easy to grasp and prevents breakage.

[Bonding of each sheet material]
For joining the above sheet materials, methods such as hot melt adhesive, thermal joining, ultrasonic sealing and the like are appropriately used. For hot melt adhesives, select from hot melt adhesives such as rubber, polyolefin, vinyl acetate, etc., direct coater coating, indirect spiral coating, melt blow (curtain spray) coating, bead coating. Apply by the method. Note that thermal bonding is preferable for bonding the side portions.

  FIG. 6 is a bottom view showing a production line for the disposable pants 1 of the present invention.

  This production line has a first line 50 for producing the front part P and a second line 51 for producing the back part Q.

  In the second line 51, the elastic members 5, 6, 7 (however, 7 is not shown) are placed in an extended state on the outer sheet that is continuously transported in the right-to-left direction 29 of the drawing. The sheet-like belt member 40 for the back portion Q is formed by covering the skin side sheet from above and joining the two sheets, and further, the belt member 40 is transferred in a state where the elastic members 5 and 6 are stretched in advance. The rear end portion of the manufactured absorbent body 4 is joined onto the band member 40, and then a V-shaped notch 41 is formed on one side edge of the band member 40 on the downstream side. The shape of the notch 41 is another shape such as a U shape according to the shape of the leg opening 3 in the back portion Q.

  On the other hand, in the first line 50, the elastic members 5 and 6 are placed in an extended state on the outer side sheet that is continuously transferred in the right-to-left direction 29 of the drawing, and the skin side sheet is placed thereon. Cover both sheets to form a sheet-like band member 30 for the front abdomen P, and further transfer the band member 30 in a state where the elastic members 5 and 6 are stretched, and the elastic member weakening step A and the cutting line forming step B, the picking unit joining step C, the remainder partial cutting step D, and the absorber main body joining step E are sequentially transferred to the downstream side.

  In the elastic member weakening step A, the weakening process is performed on the elastic members 5 and 6 in the formation of the cutting line 28 and the portion 33 to which the knob unit 10 is to be attached. In this elastic member weakening step, as a method of weakening the elastic member, a method of cutting the elastic member itself by a rotary cutter, a method of cutting partly by a rotary cutter provided with a fine blade, or an elastic member by heat From the method of curing the sheet sandwiched by melt film, the method of curing the sheet sandwiching the elastic member by ultrasonic waves, or the combination of these melt film formation and cutting with a rotary cutter, etc. Selected.

  Next, in the cutting line forming step B, a cutting line 28 extending in the width direction 34 is applied to the central portion of the band member 30 in the width direction 34. In this cutting line forming step, the cutting line 28 may be a perforated broken line such as a perforation, a non-perforated broken line, or may be melted by heat to form a thin portion. However, the cutting line 28 needs to be provided at the center in the width direction 34, and the surplus portions 32 need to be formed at both side edges in the width direction 34. Thus, the cutting line 28 is prevented from breaking in the width direction 34 during the manufacturing.

  Next, in the knob unit joining step C, the knob unit 10 is overlapped and joined so as to straddle the cutting line 28 in the longitudinal direction (direction 29) on the lower surface side of the band member 30. The picking unit joining step C is preferably performed at a position as close as possible to the cutting line forming step B from the viewpoint of preventing breakage of the cutting line 28.

  Next, in the remaining portion cutting step D, the remaining portion 32 of the band member 30 is cut out. In this step D, the surplus portion to be cut may be the two sheets of the outer surface side / skin surface side sheet in the belt member 30 as in the present embodiment, or may be cut by leaving only one of them. It may be. By doing so, material costs can be further reduced. Further, the cutting line 28 may or may not hang over the surplus portion 32, but from the viewpoint of easy opening and closing at the cutting line 28, the end of the cutting line 28 hangs over the surplus portion 32. Is preferable.

  Next, in the absorber main body joining step E, the absorber main body 4 whose rear end is joined to the belt member 40 in the second line is positioned near the cutting line 28 of the belt member 30 to which the knob unit 10 is joined. The front end portion 17 is overlapped and joined in a detachable state. The first line and the second line are designed to be parallel to each other by a predetermined distance at least immediately before the step E.

  Next, the band member 30 is folded in two on the band member 30 connected via the absorbent body 4 so that the band member 40 overlaps, and then the band members 30, 40 at the center position of the V-shaped notch 41. These side parts are joined and cut at the center of the width of the joined part (side joined part) 14 to continuously produce one disposable pant 1. In addition, an oblique portion below the left and right sides in the back portion Q is formed by the V-shaped cutout 41 portion.

  Therefore, in the case of the present embodiment, since the cutting line 28 in the width direction is formed in the band member 30 for the front abdominal part P with both ends in the width direction 34 left, the band member 30 without the cutting line exists. Both end portions (remainder portion 32) of the cutting line 28 prevent the cutting line 28 from being broken during the manufacturing process. In addition, since the knob unit 10 is joined so as to straddle the cutting line 28 after the cutting line 28 is provided, the knob unit 10 serves as a reinforcing member to further prevent breakage of the cutting line 28 during manufacture. Is possible. Then, after the knob unit 10 is joined, the excess portion 32 is cut off and removed to form a band member 30 having a predetermined vertical dimension (width dimension), and the front end 17 of the absorber body 4 can be engaged and disengaged thereto. If it joins, the disposable pants 1 which can open and close the front abdominal part P to right and left can be obtained.

  In the present embodiment, the elastic members 5 and 6 are arranged on the belt member 30 in order to obtain the stretchable front abdomen P. In this case, the cutting line 28 is affected by the expansion and contraction of the elastic members 5 and 6. In order to prevent this, the elastic members 5 and 6 of the portion 33 where the knob unit 10 is to be provided are weakened in advance, so that the knob unit 10 is attached. In addition, the cutting line 28 on the lower side can be easily formed.

  In the above-described embodiment, the rear end of the absorbent body is first joined to the belt member sheet on the back portion side, and then the front end of the absorbent body is joined to the belt member sheet for the front abdomen. However, the present invention is not limited to this, and the front end of the absorbent body is first joined to the belt member sheet for the front abdomen, and thereafter, or simultaneously, the rear end of the absorbent body is placed on the back side. You may join to.

  In the above-described embodiment, the first member and the second member are manufactured by placing an elastic member on the outer surface sheet and covering the skin surface sheet thereon, but the present invention is not limited to this. . For example, the first line and the second line may be manufactured by placing an elastic member on the skin side sheet and covering the outer side sheet thereon.

  Moreover, in embodiment mentioned above, although applied to manufacture of the disposable pants which join the rear-end part of an absorber main body to a back part, this invention is not restricted to this, The rear-end part of an absorber main body to a back part The present invention can be similarly applied to the production of disposable pants that are detachably joined.

  Moreover, although embodiment mentioned above has demonstrated the manufacturing method of the disposable pants shown in FIG. 1, this invention is applicable not only to this disposable pants. For example, an example will be described with reference to FIG. In FIG. 7, the same parts as those in FIG.

  The front abdominal part P may have a shape in which the vertical width is not constant and the central part protrudes downward. Moreover, regarding the absorber main body 4, the lateral width may not be constant, and the width on the front side may be wider than other portions. The same applies to the rear side of the absorbent body 4. Furthermore, the leg elastic member 7 may be provided also in the front abdomen P.

It is a front view which shows the disposable pants which concern on one Embodiment of this invention. It is a front view which shows the state which expand | deployed the right belt | belt member in the disposable pants of FIG. It is a front view which shows the state which also expanded the left belt | band | zone member in the disposable pants of FIG. It is a front view which shows the state which expand | deployed the disposable pants of FIG. It is sectional drawing which shows the absorber main body in the disposable pants of FIG. It is a bottom view which shows the production line of the disposable pants of this invention. It is a front view which shows the example of other disposable pants which can apply the method of this invention. It is an expanded view of the disposable pants of patent document 1. It is an external appearance perspective view which shows the disposable pants of patent document 1. FIG.

Explanation of symbols

P front abdomen Q back part 1 disposable pants 4 absorbent body 5, 6 elastic member 10 knob unit 11 outer surface side member (joint part)
12 Skin side member (joint part)
17 Front end portion 28 Cutting line 30 Band member 32 Both ends (remaining portion)
33 Planned part 34 Width direction

Claims (2)

The front part and the back part are joined, and the front part and the back part of the absorber body are connected to the front part and the back part to form a crotch part. It is a manufacturing method of disposable pants in which the front abdomen can be opened and closed left and right while being joined to the front end part so as to be detachable,
Using the front abdominal band member having a width dimension wider than the vertical length of the front abdomen, with the left and right direction of the front abdomen as the longitudinal direction, cutting in the width direction while leaving both ends in the width direction on the band member A cutting line forming step of forming a line;
The front member has two joint parts joined to each of both sides sandwiching the cutting line of the band member in the longitudinal direction, and both the joint parts are overlapped and the overlapped part is detachably joined. Using a knob unit for opening and closing the abdomen left and right, and joining the knob unit across the cutting line to the band member;
A step of cutting off a surplus portion in the width direction side edge of the band member to which the knob unit is joined;
And a step of detachably joining the front end portion of the absorbent body in an overlapping state at a position in the vicinity of the cutting line in the band member.   In the manufacturing method of the disposable pants according to claim 1, when the belt member for the front abdomen has a sheet and an elastic member attached to the sheet in the longitudinal direction, and has stretchability in the longitudinal direction, The manufacturing method of the disposable pants characterized by performing the weakening process process which weakens the elastic member of the picking unit joining planned part in this strip | belt member by predetermined length before the said cutting line formation process.

Images