CN110302011A

CN110302011A - The manufacturing method of underpants-type absorbent article and underpants-type absorbent article

Info

Publication number: CN110302011A
Application number: CN201910208462.5A
Authority: CN
Inventors: 高桥雄二; 姚旭光; 史異
Original assignee: Eunija Co Ltd
Current assignee: Eunija Co Ltd
Priority date: 2018-03-20
Filing date: 2019-03-19
Publication date: 2019-10-08
Also published as: JP2019162372A

Abstract

The present invention provides the manufacturing method of underpants-type absorbent article and underpants-type absorbent article.Underpants-type absorbent article skin sense of touch at waistline opening portion is good.Underpants-type absorbent article (1), which has, utilizes multiple joint portions (50) by skin lateral plate (22, 23) the outsourcing load (20) for being bonded together and being formed with non-skin lateral plate (21), outsourcing load (20) includes the folded-back part (21bf) turned back to downside and the non-folded-back part (21bn) that do not turn back in upper end, in a thickness direction, at least part of folded-back part (21bf) is Chong Die with non-folded-back part (21bn), wherein, when from unilateral observation on thickness direction, at folded-back part (21bf), joint portion that multiple joint portions (50) by being adjacent to arrangement in the up-down direction are formed column (L50) in the lateral direction on side inclination, at non-folded-back part (21bn), joint portion arrange (L50) in the lateral direction on the other side inclination.

Description

The manufacturing method of underpants-type absorbent article and underpants-type absorbent article

Technical field

The present invention relates to the manufacturing methods of underpants-type absorbent article and underpants-type absorbent article.

Background technique

It has been known that there is the two or more that will be laminated in a thickness direction using many a joint portions discontinuously configured in the past Sheet element be joined together to constituting the underpants-type absorbent articles such as the paper nappy of outer packing.Such as in patent document A kind of disposable diaper is disclosed in 1, is had to utilize and is dispersed existing multiple weld portions (joint portion) for skin lateral plate, non-flesh Skin lateral plate and flexible non-woven fabrics are bonded together and the outer packing (outsourcing load 20) that is formed.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2017-118973 bulletin

Summary of the invention

Problems to be solved by the invention

In the disposable diaper of patent document 1, the upper end of outsourcing load is turned back to downside at waistline opening portion, The elastic components such as rubber covered wire are sandwiched between the outsourcing load being overlapped along thickness direction, to assign to waistline opening portion The retractility of appropriateness and the durability for improving waistline opening portion.But the area that the outsourcing load at waistline opening portion folds In domain, multiple weld portions overlap each other in a thickness direction and the skin sense of touch of the part that leads to the overlapping is harder, it is possible to make Wearer etc. generates sense of discomfort.Especially in the case where multiple weld portions are configured along up and down direction in column-shaped, to outsourcing When load is folded, on the same column, a possibility that weld portion overlaps each other in a thickness direction, is higher, and skin sense of touch is held Easily deteriorate.

The present invention is completed in view of problem as described above, it is intended that providing one kind at waistline opening portion The good underpants-type absorbent article of skin sense of touch.

The solution to the problem

Main invention for achieving the object above is a kind of underpants-type absorbent article, with intersected with each other upper Lower direction, left and right directions and thickness direction, and having will be on the thickness direction using the existing multiple joint portions of dispersion The skin lateral plate of stacking and non-skin lateral plate are bonded together and the outsourcing load that is formed, and the outsourcing load includes in upper end The folded-back part turned back to downside and the non-folded-back part that do not turn back, on the thickness direction, at least part of the folded-back part Chong Die with the non-folded-back part, which is characterized in that, from the unilateral observation on the thickness direction When, at the folded-back part, the joint portion that multiple joint portions by being adjacent to arrangement in the up and down direction are formed is arranged Side inclination on the left and right directions, at the non-folded-back part, the joint portion arranges another on the left and right directions Side inclination.

Other features of the invention can be specified according to the record of the specification and drawings.

The effect of invention

According to the present invention, it is possible to provide one kind at the waistline opening portion good underpants-type absorbent article of skin sense of touch.

Detailed description of the invention

Fig. 1 is the approximate stereogram for indicating a structural example of sanitary napkin 1.

Fig. 2 is expansion and the sanitary napkin 1 under elongation state and the outline observed from the skin side on thickness direction Top view.

Fig. 3 is the Section A-A schematic diagram of Fig. 2.

The A of Fig. 4 is the top view for enlargedly indicating the region A of Fig. 2.The B of Fig. 4 is the region C for enlargedly indicating the A of Fig. 4 Figure.

Fig. 5 is the top view for enlargedly indicating the region B of Fig. 2.

Fig. 6 is the figure for illustrating the formation at joint portion 50.

Fig. 7 is the top view for illustrating the configuration of the weld portion 60 set on non-skin lateral plate 21.

Fig. 8 be indicate to be configured at outsourcing load 20 weld portion 60 and joint portion 50 configuration an example vertical view Figure.

The A of Fig. 9 is the schematic sectional view for indicating the state after outsourcing load 20 extends in the lateral direction.The B of Fig. 9 is table Show the schematic sectional view of the state after outsourcing load 20 is shunk in the lateral direction.

Description of symbols

1, sanitary napkin (underpants-type absorbent article)；1a, waistline opening；1b, leg-openings；10, absorbent main body；11, Absorbent core；12, top layer piece；13, second；14, bottom chip；20, outsourcing load；20f, front side outsourcing load；20ff, fold-back Portion；20fn, non-folded-back part；20fe, both ends；20b, rear side outsourcing load；20bf, folded-back part；20bn, non-folded-back part；20be, Both ends；21, non-skin lateral plate；21a, serialgram；22, skin lateral plate；23, skin lateral plate；23a, serialgram；25f, engagement Portion；25b, joint portion；31, absorbent main body elastic component；32f, waistline elastic component；32b, waistline elastic component；50, it engages Portion；50a, the 1st joint portion；50b, the 2nd joint portion；50c, the 3rd joint portion；50d, the 4th joint portion；60, weld portion；It is 110A, close Seal roller；110B, sealed roller；111A, rotary shaft；111B, rotary shaft；112, protrusion；L112, protrusion column；FL20f, front side bending Position；FL20b, rear side crooked place；L50, joint portion column；L112, protrusion column.

Specific embodiment

According to the record of the specification and drawings, item below can be at least specified.

A kind of underpants-type absorbent article, with up and down direction intersected with each other, left and right directions and thickness direction, and With the skin lateral plate being laminated on the thickness direction and non-skin lateral plate being engaged using dispersing existing multiple joint portions The outsourcing load formed together, the outsourcing load include the folded-back part turned back to downside in upper end and do not turn back non- Folded-back part, on the thickness direction, at least part of the folded-back part is Chong Die with the non-folded-back part, the pant type absorbent Property article is characterized in that, when from unilateral observation on the thickness direction, at the folded-back part, by the upper and lower The joint portion for being adjacent to multiple joint portions formation of arrangement upwards arranges the side inclination on the left and right directions, described At non-folded-back part, the joint portion arranges the inclination of the other side on the left and right directions.

Using such underpants-type absorbent article, since joint portion arranges round about at non-folded-back part and folded-back part Inclination, therefore joint portion column are not easy to overlap each other in a thickness direction.Thus, it is suppressed that in a thickness direction because of joint portion column It coincides with one another and leads to the situation that outsourcing load is locally harder, skin sense of touch deteriorates.It is a kind of in waistline opening thereby, it is possible to provide With the underpants-type absorbent article of good skin sense of touch at portion.

For the underpants-type absorbent article, it is desirable to be adjacent to the multiple of arrangement on the left and right directions Position in the up and down direction at the joint portion is identical, is adjacent to arrangement on the left and right directions at the folded-back part Multiple joint portions the up and down direction on position at the non-folded-back part on the left and right directions it is adjacent Position in the up and down direction at multiple joint portions of ground arrangement is different.

Using such underpants-type absorbent article, since the position at the joint portion at non-folded-back part and folded-back part is also upper Lower section is staggered upwards, therefore is not easy to overlap each other with joint portion on the two directions of up and down direction in left and right directions.Thus, by The part dispersion that joint portion causes outsourcing load to harden, can make the skin sense of touch near waistline opening better.

For the underpants-type absorbent article, it is desirable to which the joint portion is arranged relative to the up and down direction Tilt angle is less than 45 °.

It is able to suppress as follows using such underpants-type absorbent article when outer package panel is shunk along left and right directions Situation: fold is interrupted in midway, or is more formd compared with extending along up and down direction along left and right directions extension Irregular fold.It is easy to form the fold of regular beauty on the surface of outer package panel as a result, is able to ascend outsourcing load Appearance and skin sense of touch.

For the underpants-type absorbent article, it is desirable to which the joint portion is arranged relative to the up and down direction Tilt angle is 5 ° or more and 10 ° or less.

Using such underpants-type absorbent article, can inhibit to form largely inclined pleat in outer package panel Wrinkle, is easily formed the fold parallel with up and down direction.Thus, it is possible to inhibit to bring underpants-type absorbent article to be formed to user For the asymmetric such impression in left and right, it is not easy to allow user to generate uneasy.

For the underpants-type absorbent article, it is desirable to which the joint portion column have in the up and down direction The 1st joint portion arranged adjacent to each other and the 2nd joint portion, the 1st joint portion and the 2nd joint portion are in the right and left It is not overlapped upwards.

Using such underpants-type absorbent article, in the manufacturing process of outer package panel, to (defeated along left and right directions Send direction) conveying skin lateral plate and non-skin lateral plate apply ultrasonic activation to form joint portion when, be easy to the 1st engage Portion and the 2nd joint portion apply appropriate ultrasonic activation respectively.That is, due on the left and right directions at the 1st joint portion and the 2nd joint portion Position offset one from another, therefore apply pressure at the time of be staggered, be easy to each joint portion apply pressure.Thereby, it is possible to not allow It is bad to be also easy to produce welding.

For the underpants-type absorbent article, it is desirable to which the joint portion column have in the up and down direction The 1st joint portion arranged adjacent to each other and the 2nd joint portion, on the left and right directions, a side at the 1st joint portion Position is identical with the position of another side at the 2nd joint portion.

Using such underpants-type absorbent article, in the manufacturing process of outer package panel, to (defeated along left and right directions Send direction) conveying skin lateral plate and non-skin lateral plate apply ultrasonic activation to form joint portion when, be easy to the 1st engage Portion and the 2nd joint portion apply appropriate ultrasonic activation respectively.Also, the gradient of joint portion column is not too big, therefore is easy to Form the straight fold extended along the up and down direction of outsourcing load.

For the underpants-type absorbent article, it is desirable to two institutes adjacent to each other in the up and down direction The interval stated in the up and down direction between joint portion is greater than two engagements adjacent to each other on the left and right directions The interval on the left and right directions between portion.

It is maintain when outer package panel is shunk along left and right directions upper and lower using such underpants-type absorbent article The distance between two joint portions adjacent to each other on direction, and between two joint portions adjacent to each other in the lateral direction Distance shorten.Longer straight fold in the up-down direction is readily formed into as a result, to arrange more carefully in the lateral direction. Thus, it is possible to further promote the appearance and skin sense of touch of outsourcing load.

For the underpants-type absorbent article, it is desirable to the length in the up and down direction at the joint portion The length being longer than on the left and right directions at the joint portion.

Using such underpants-type absorbent article, when outer package panel is shunk along left and right directions, using in right and left Non-woven fabrics is clamped in the long side part at two joint portions adjacent to each other upwards, to make the long leg be divided into leader, easily In the fold that formation extends along up and down direction.It is easily formed rule in the up-down direction and beautiful fold as a result, is easy to allow User generates more soft impression.

For the underpants-type absorbent article, it is desirable to which the skin lateral plate is that have on the left and right directions There is the stretchable sheet of retractility.

Using such underpants-type absorbent article, if being configured at the skin lateral plate of the skin side of outsourcing load in right and left It shrinks upwards, then non-skin lateral plate is easy to that bulging deformation occurs to non-skin side at the part of contraction, is easy in outer package panel Surface formed fold.Thereby, it is possible to keep the skin sense of touch of outsourcing load softer.

For the underpants-type absorbent article, it is desirable to be equipped with cross-shaped arrangement in the non-skin lateral plate Multiple weld portions, the area of each weld portion is greater than the area at each joint portion.

Using such underpants-type absorbent article, the rigidity of the part at joint portion formed in outsourcing load is higher than shape At the rigidity for the part for having weld portion, therefore by making the area at joint portion be less than the area of weld portion, so as to make outsourcing The higher part of rigidity in load is not easy to contact with user.Thereby, it is possible to inhibit the skin sense of touch of outsourcing load to deteriorate.

For the underpants-type absorbent article, it is desirable to be arranged in the per unit area of the outsourcing load The summation of area of the weld portion be greater than the face at the joint portion being arranged in the per unit area of the outsourcing load Long-pending summation.

Using such underpants-type absorbent article, by being less than the area at the joint portion configured in per unit area The area of the weld portion configured in per unit area, so as to inhibit the higher situation of rigidity of outsourcing load entirety.By This, natural style, the retractility of outsourcing load are not easy to be damaged, and can be realized good skin sense of touch.

For the underpants-type absorbent article, it is desirable to the length on the left and right directions of the weld portion Less than the interval on the left and right directions between two joint portions adjacent to each other on the left and right directions.

Using such underpants-type absorbent article, along left and right directions joint portion column (joint portion) adjacent to each other it Between configured with each weld portion and weld portion not probability Chong Die with joint portion raising.It is easy to for weld portion being configured at as a result, The convex portion of the fold of Shi Xiangfei skin side bulging deformation is shunk along left and right directions in outer package panel.Thus, in the convex of fold Under the action of the poor rigidity in portion, fold is easily deformable, and feel can be made good.

For the underpants-type absorbent article, it is desirable to the length in the up and down direction of the weld portion Less than the interval in the up and down direction between two joint portions adjacent to each other in the up and down direction.

Using such underpants-type absorbent article, weld portion and joint portion are not easy to be overlapped in the up-down direction, inhibit The harder situation of the skin sense of touch of outsourcing load.

For the underpants-type absorbent article, it is desirable to which the area at the joint portion is 0.03mm²Above and 0.2mm²Below.

Using such underpants-type absorbent article, by the way that the area at joint portion is set as 0.2mm²Hereinafter, so as to The situation for inhibiting the rigidity for the part for being formed with joint portion excessively high.In addition, by the way that the area at joint portion is set as 0.03mm²With On, to be easy to fully ensure the bond strength between skin lateral plate and non-skin lateral plate.

In addition, a kind of manufacturing method of underpants-type absorbent article can be specified, it is in this manufacturing method, multiple using utilizing The skin lateral plate being overlapped in a thickness direction and non-skin lateral plate are bonded together by joint portion and the outsourcing load that is formed is made Underpants-type absorbent article is made, the manufacturing method of the underpants-type absorbent article is characterized in that, which includes following Process: conveying operation has the process that conveys continuous skin side serialgram in the MD direction along the direction MD With by non-skin side serialgram continuous on the direction MD with Chong Die with skin side serialgram in a thickness direction The process that state is conveyed along the direction MD；And bonding process, it is in this process, pre- on the direction MD using being set to A pair of of sealing that positioning is set and rotated centered on the rotary shaft along the CD direction extension orthogonal with the direction MD Roller sandwiches skin side serialgram and the non-skin side serialgram on the thickness direction to form the joint portion, The outer peripheral surface of the sealed roller of side in the pair of sealed roller is arranged equipped with protrusion, will be used to form the joint portion Multiple protrusions are adjacent to arrangement to form protrusion column, in the column of the protrusion, in the direction CD on the direction CD Upper two protrusions adjacent to each other are configured at the position being staggered in the circumferential direction of the sealed roller.

Using the manufacturing method of such underpants-type absorbent article, due to sandwiched using sealed roller and by skin Pressure is successively applied to each protrusion for constituting protrusion column when lateral plate and non-skin lateral plate are bonded together, therefore can be not easy It is bad to generate welding.It can be good interior to manufacture skin sense of touch in the outsourcing load of surface formation fold thereby, it is possible to be formed Pants type absorbent commodity.

For the manufacturing method of the underpants-type absorbent article, it is desirable to adjacent to each other on the direction CD Two protrusions be greater than 0 ° and less than 20 ° relative to the tilt angle in the direction CD.

Using the manufacturing method of such underpants-type absorbent article, by making tilt angle be greater than 0 °, so as to press down The case where pressing pressure is scattered in protrusion adjacent in the cd direction and the intensity at joint portion is caused to decline.In addition, by making to tilt Angle less than 20 °, so as to inhibit adjacent in the cd direction joint portion between pitch it is excessive and result in outsourcing The case where fold of load is uneven, and aesthetics declines.

===embodiment===

One example of the underpants-type absorbent article as embodiments of the present invention, to the sanitary napkin of underwear type (with Under be also referred to as " sanitary napkin 1 ") be illustrated.In addition, underpants-type absorbent article also includes underpants-style diapers, pant type absorbent Pad etc..

The basic construction > of < sanitary napkin 1

Fig. 1 is the approximate stereogram for indicating a structural example of sanitary napkin 1 for present embodiment.Fig. 2 is from thickness direction On the observation expansion of skin side and the sanitary napkin 1 under elongation state and the approximate vertical view observed.Fig. 3 is that the A-A of Fig. 2 is cut Face schematic diagram.

As depicted in figs. 1 and 2, " left and right directions " that sanitary napkin 1 has " up and down direction " and intersects with up and down direction, and There is " thickness direction " in the direction being laminated as each component as shown in Figure 3.It will be in up and down direction, hygienic in wearer's dress Side in the state of towel 1 as the waist side of wearer is referred to as " upside ", will be referred to as the side of the crotch of wearer " under Side ".Side on thickness direction, contacting in the state that wearer wears sanitary napkin 1 with the skin of wearer is referred to as " flesh That side opposite with skin side is referred to as " non-skin side " by skin side ".In addition, as shown in Figure 1, sanitary napkin 1 has " front and back To ", in the front-rear direction, " front side " will be referred to as the side of the veutro of wearer when wearing, will become wearer's The side of back side is referred to as " rear side ".

In addition, " elongation state " of sanitary napkin 1 refer to it is (such as aftermentioned by each elastic component for having sanitary napkin 1 The telescopic sheets such as rubber covered wire, skin lateral plate 22,23) elongation is to make sanitary napkin 1 whole (product is whole) be elongated to no pleat The state of wrinkle is specifically elongated to each component (such as aftermentioned non-skin lateral plate 21 and the skin lateral plate for constituting sanitary napkin 1 22, the state until consistent with the size of the component monomer or size close to the component monomer of size 23 etc.).

Sanitary napkin 1 includes band-like absorbent main body 10 for absorbing the liquid such as menses and positioned at absorbent main body 10 The outsourcing load 20 of non-skin side.

(absorbent main body 10)

As shown in Fig. 2, absorbent main body 10 is length direction (the i.e. length of absorbent main body 10 under expansion and elongation state Edge direction) consistent with the up and down direction of sanitary napkin 1 vertical view is in generally rectangular shape.Moreover, as shown in figure 3, absorbing Property main body 10 have alongst (up and down direction) extend absorbent core 11, positioned at the top of the skin side of absorbent core 11 Synusia 12 and second 13 and be configured at absorbent core 11 non-skin side bottom chip 14.

Absorbent core 11 is the component for absorbing and keeping the liquid such as urine, such as by being mixed into superabsorbent polymer (SAP) liquidabsorbing fibres such as pulp fibers are formed.Alternatively, it is also possible to utilize the piece of the liquid permeabilities such as tissue sheet, non-woven fabrics Component (core covering piece) covers the outer peripheral surface of absorbent core 11.

Top layer piece 12 is the sheet element for the liquid permeability being in contact in the skin for wearing Shi Huiyu wearer, such as by hydrophilic Property hot-wind nonwoven cloth, spun-bonded non-woven fabrics etc. formed.Second 13 is with roughly the same with the function and structure of top layer piece 12 Function and structure sheet element, be laminated in the non-skin side of top layer piece 12.Alternatively, it is also possible to necessarily in absorbability master Second 13 is arranged in body 10.

Bottom chip 14 is formed by the double-layer structure including opaque liquid piece 14a and liquid-permeable sheet 14b, above-mentioned opaque liquid piece The liquid such as the urine that 14a is used to that absorbent core 11 to be inhibited to be absorbed escape to outside；Above-mentioned liquid-permeable sheet 14b is configured at opaque liquid The non-skin side of piece 14a.As opaque liquid piece 14a, resin film etc. can be used for example, as liquid-permeable sheet 14b, such as can To use the non-woven fabrics etc. with flexibility.

Both ends on the left and right directions (width direction) of absorbent main body 10, which are respectively equipped with, alongst to be extended Absorbent main body elastic component 31.Absorbent main body elastic component 31 is such as being able to use rubber covered wire, by making the absorption Property body elastic member 31 shrink in the longitudinal direction, thus make absorbent main body 10 along wearer calf circumference be bonded.As a result, It is easy to inhibit the side leakage of excreta.

(outsourcing load 20)

Outsourcing load 20 is arranged in the sheet element of the non-skin side of absorbent main body 10, with non-21 He of skin lateral plate Skin lateral plate 22,23.In addition, in the following description, also by it is in outsourcing load 20, in the longitudinal direction than predetermined position CL It is referred to as front side outsourcing load 20f by the part of front side (veutro), after being referred to as than predetermined position CL by the part of rear side (back side) Side outsourcing load 20b.

Non- skin lateral plate 21 is arranged in the sheet element of the non-telescoping property of the position near non-skin side of sanitary napkin 1, Such as it is formed by spun-bonded non-woven fabrics, SMS non-woven fabrics etc..In the present embodiment, as shown in Fig. 2, non-skin lateral plate 21 is in length Central portion (part comprising predetermined position CL) on direction has the shape towards constriction on the inside of left and right directions.In addition, non- The range of the whole surface of skin lateral plate 21 is equipped with multiple weld portions 60.Weld portion 60 is for example formed by cotton ginning processing, is led to It crosses and the weld portion 60 is set, ensure that the sufficient intensity of non-skin lateral plate 21.The detailed content of weld portion 60 will be rear Face explanation.

Skin lateral plate 22 is the tool that the skin side of non-skin lateral plate 21 is laminated at front side (veutro) in the longitudinal direction There is the sheet element of retractility, is configured at region shown in the oblique line of Fig. 2.Skin lateral plate 22 is for example by flexible nonwoven fabrics shape At." flexible nonwoven fabrics " are comprising having the elastic fibre of retractility and shrinkage lower than the shrinkage of elastic fibre It is including extensibility fiber, implement the non-woven fabrics that gear the appropriate stretch processing such as stretches and formed.For present embodiment Skin lateral plate 22 for, be able to use the polyurethane series elastomer as one of flexible thermoplastic elastomer (TPE) Fiber is able to use as elastic fibre as the polyolefin-based resins with one of stiff thermoplastic resin Polypropylene (PP) fiber as extensibility fiber.

Skin lateral plate 22 and non-skin lateral plate 21 are bonded on one using existing multiple joint portions 50 (referring to Fig. 4) are dispersed It rises, assigns the retractility at least left and right directions to front side outsourcing load 20f as a result,.In the present embodiment, joint portion 50 is It is formed using the well-known engagement means such as ultrasonic fusing.The detailed content at joint portion 50 will be explained below.

Skin lateral plate 23 is the tool that the skin side of non-skin lateral plate 21 is laminated at rear side (back side) in the longitudinal direction There is the sheet element of retractility, is configured at region shown in the oblique line of Fig. 2.Skin lateral plate 23 has the structure with skin lateral plate 22 Identical structure is connect the skin lateral plate 23 and non-skin lateral plate 21 using existing multiple joint portions 50 (referring to Fig. 4) are dispersed It is combined.The retractility at least left and right directions is assigned to rear side outsourcing load 20b as a result,.

In addition, upper end in above-below direction, a part of outsourcing load 20 is turned back to downside.In Fig. 3, outside front side Package panel 20f have folded-back part 20ff, folded-back part 20ff be at the crooked place FL20f of front side vertically on downside It (inside on length direction) and is the part that the skin side on thickness direction is turned back.In addition, by front side outsourcing load 20f Non- folded-back part 20fn is not set as to the part that downside is turned back.For folded-back part 20ff, at it along thickness direction and non-folding It returns in the state of portion 20fn stacking, using the joint portion 25f formed by bonding agents such as hot-melt adhesives by folded-back part 20ff's At least one is joined together with the non-folded-back part 20fn.Moreover, in the thickness of folded-back part 20ff and non-folded-back part 20fn The waistline elastic component 32f extended along width direction is equipped between direction.Waistline elastic component 32f is for example able to use rubber Line etc. is fixed on outsourcing load 20 with the state extended in the direction of the width (between 20ff and 20fn).By making the waistline Elastic component 32f is shunk in the direction of the width, so as to waist portion, (aftermentioned waistline is opened at the front side (veutro) of sanitary napkin 1 Mouth 1a) assign retractility.

In addition, skin lateral plate 22 and non-skin lateral plate 21 are together in front side crooked place in front side outsourcing load 20f It turns back at FL20f, but it is desirable that, is shorter in length than non-skin lateral plate 21 in the up and down direction for the part that skin lateral plate 22 turns back Length in the up and down direction of the part of fold-back.In other words, it is desirable at folded-back part 20ff, above and below skin lateral plate 22 The length in the up and down direction for being shorter in length than non-skin lateral plate 21 on direction.In this case, it is not easy to the waistline of sanitary napkin 1 The retractility of skin lateral plate 22 is assigned to region transitions near opening 1a, the stickiness of the waistline of wearer is inhibited to deteriorate, and And it is easy to inhibit folded-back part 20ff clot.

Similarly, in Fig. 3, rear side outsourcing load 20b, which has folded-back part 20bf, folded-back part 20bf, to be bent in rear side At the FL20b of position vertically on downside (inside on length direction) and be the portion that skin side on thickness direction is turned back Point.In addition, by non-folded-back part 20bn is not set as to the part that downside is turned back in front side outsourcing load 20b.For folded-back part For 20bf, in the state that it is laminated along thickness direction and non-folded-back part 20bn, using by bonding agents such as hot-melt adhesives At least part of folded-back part 20bf and the non-folded-back part 20bn are joined together by the joint portion 25b of formation.With waist Elastic component 32f is enclosed similarly, by the waistlines bullet such as rubber covered wire between folded-back part 20bf and the thickness direction of non-folded-back part 20bn Property component 32b is fixed with the state extended in the direction of the width, using the waistline elastic component 32b sanitary napkin 1 rear side Retractility is assigned to waist portion (aftermentioned waistline opening 1a) at (back side).

In addition, with above-mentioned skin lateral plate 22 likewise, it would be desirable to, skin lateral plate 23 turn back part up and down direction on The up and down direction for being shorter in length than the part that non-skin lateral plate 21 turns back on length.In other words, it is desirable in folded-back part The length in the up and down direction for being shorter in length than non-skin lateral plate 21 at 20bf, in the up and down direction of skin lateral plate 23.

It, will be pre- on the length direction of absorbent main body 10 from unfolded state shown in Fig. 2 for sanitary napkin 1 Positioning sets CL (indicating in Fig. 2 using single dotted broken line) as folding position thus by absorbent main body 10 and outsourcing load 20 in length Degree is converted into two foldings on direction.It, will be preceding using well-known engagement means such as sealing weldings in the state that this is converted into two foldings The width of the width direction both ends 20fe and rear side outsourcing load 20b of the front side outsourcing load 20f to coincide with one another in rear direction Direction both ends 20be is bonded together.Be converted into as a result, the outsourcing loads 20 (20f and 20b) of two foldings front side (veutro) and after It is annularly connected at side (back side), forms 1 waistline opening 1a and a pair of leg circumference opening 1b as shown in Figure 1, form underpants The sanitary napkin 1 of type.

In addition, as shown in Figures 2 and 3, the front side outsourcing load 20f and rear side outsourcing load 20b of outsourcing load 20 have Same structure.Thus, in the following description, mainly rear side outsourcing load 20b is illustrated, for front side outsourcing Load 20f is omitted the description.

< is about 50 > of joint portion

As described above, by the non-skin lateral plate 21 of the non-telescoping property and at least body in the direction of the width using multiple joint portions 50 The skin lateral plate 22,23 of existing retractility is bonded together in the state that through-thickness is laminated, to form the outer of sanitary napkin 1 Package panel 20.Hereinafter, being illustrated to the details at joint portion 50.

The A of Fig. 4 is the top view for enlargedly indicating the region A of Fig. 2.The B of Fig. 4 is the region C for enlargedly indicating the A of Fig. 4 Figure.In the Fig. 4, for rear side outsourcing load 20b, illustrates and be formed in non-folded-back part 20bn from non-skin side Joint portion 50 configuration and the state observed.Fig. 5 is the top view for enlargedly indicating the region B of Fig. 2.In the Fig. 5, needle For rear side outsourcing load 20b, illustrate from non-skin side (direction identical with the A of Fig. 4) in folded-back part 20bf and The configuration at the joint portion 50 that the region of non-folded-back part 20bn overlapping is formed and the state observed.In addition, for ease of description, figure 4, Fig. 5 does not indicate weld portion 60.

As shown in the B of the A and Fig. 4 of Fig. 4, in outer package panel 20 (20b), multiple joint portions 50 (length in above-below direction Direction) and left and right directions (width direction) on be spaced apart scheduled be positioned apart from.Each joint portion 50 has on length direction Length L50 is longer than the generally rectangular shape (L50 > W50) of length (width) W50 in width direction.In present embodiment In, L50=0.3mm or so, W50=0.22mm or so.In addition, length L50, W50 can be changed properly.In addition, joint portion 50 shape is not limited to rectangle, such as is also possible to ellipse, polygon.

Multiple joint portions 50,50 ... in above-below direction on left and right directions at equal intervals (equal pitch) configure.In other words, Interval (pitch) P50r in the up and down direction between two joint portions 50,50 adjacent to each other is equal in the up-down direction. In addition, interval (pitch) P50l in the lateral direction on the left and right directions between two joint portions 50,50 adjacent to each other is equal Equal (referring to the A of Fig. 4).Moreover, the interval P50r in up and down direction is longer than interval P50l (the P50r > on left and right directions P50l)。

In addition, the set at the multiple joint portions 50,50 ... for being adjacent to arrangement in the up-down direction is set as joint portion column L50.For example, will exist comprising the 1st joint portion 50a and the 2nd joint portion 50b adjacent to each other in the up-down direction in the A of Fig. 4 Interior joint portion column are set as the 1st joint portion column L50a, will include the 3rd joint portion 50c and the 4th adjacent to each other in the up-down direction Joint portion column including the 50d of joint portion are set as the 2nd joint portion column L50c.

Moreover, each joint portion column L50 in the lateral direction on side obliquely configure.That is, in above-below direction On two joint portions 50,50 (such as the 1st joint portion 50a and the 2nd joint portion 50b) for arranging adjacent to each other be configured in left and right The position being staggered on direction.In Fig. 4, in the case where from the side (non-skin side) from thickness direction, the 1st joint portion Column L50a and the 2nd joint portion column L50c is tilted both with respect to up and down direction with scheduled angle, θ 50.

On the other hand, (such as the 1st joint portion of multiple joint portions 50,50 ... arranged adjacent to each other in the lateral direction 50a and the 3rd joint portion 50c) it is configured at identical position in the up-down direction.

Will including so in the lateral direction on the inclined joint portion column L50 in side (being lower right in Fig. 4) including Rear side outsourcing load 20b when turning back at rear side crooked place FL20b, at folded-back part 20bf joint portion column L50 become to Opposite side (other side) inclined state on left and right directions.It is indicated by the solid line to be set in rear side outsourcing load 20b in Fig. 5 Non- folded-back part 20bn joint portion 50, be represented by dashed line set on the joint portion of folded-back part 20bf 50.With the state from thickness When side (non-skin side) on direction is observed, in non-folded-back part 20bn joint portion column L50 relative to up and down direction to Right side inclination, in contrast, column L50 in joint portion is tilted to the left relative to up and down direction in folded-back part 20bf.In addition, rear Joint portion column L50 and folded-back part 20bf in the case that side crooked place FL20b is parallel with left and right directions, in non-folded-back part 20bn In joint portion column L50 it is inclined contrary, but inclined angular dimension is equal.In Fig. 5, connecing in folded-back part 20bf The inclined angular dimension of joint portion column L50 in the inclined angular dimension of conjunction portion column L50 and non-folded-back part 20bn is θ 50。

In sanitary napkin 1, folded-back part 20bn and folded-back part 20bf in rear side outsourcing load 20b, non-is in thickness direction In the region of upper overlapping, by making the inclination of joint portion column L50 become opposite direction as Fig. 5, so as to promote this Skin sense of touch at region.Since joint portion 50 is formed by ultrasonic fusing etc., it is being formed with the joint portion In 50 region, the non-woven fabrics for constituting non-skin lateral plate 21 is locally hardened.Thus, it is assumed that at joint portion, column L50 is not opposite In the up and down direction inclination the case where under (i.e. joint portion 50 is arranged as the situation parallel with up and down direction), in non-folded-back part 20bn and Joint portion column L50 overlaps each other in a thickness direction at folded-back part 20bf, is being provided with joint portion column L50's to will lead to Non- skin lateral plate 21 is obvious along the hardening of up and down direction at part, and skin sense of touch is easy to deteriorate.Especially, folded-back part 20bf It is the part (waistline opening 1a) of the waistline of wearer tightly to be strangled when wearing sanitary napkin 1, and be open also for broadening waistline 1a or adjust sanitary napkin 1 position and the finger that the enables a wearer to part that is easy to touch.Thus, if setting in folded-back part 20bf The non-woven fabrics for being equipped with the part of joint portion column L50 locally hardens and skin sense of touch is caused to deteriorate, then is easy to enable a wearer to generate Sense of discomfort.

In contrast, in the present embodiment, due at non-folded-back part 20bn and folded-back part 20bf joint portion column L50 to Opposite direction inclination, therefore joint portion column L50 is not easy to overlap each other in a thickness direction.That is, being easy to inhibit in folded-back part At 20bf joint portion column L50 be overlapped in a thickness direction and the situation that causes non-woven fabrics locally to harden.It is open as a result, in waistline 1a nearby can be realized good skin sense of touch.

Also, in sanitary napkin 1, the joint portion 50,50 ... arranged in the lateral direction in non-folded-back part 20bn it is upper Position in the up and down direction at the joint portion 50,50 ... arranged in the lateral direction in the upward position in lower section and folded-back part 20bf It sets and is staggered.In the outsourcing load 20 of present embodiment, since the joint portion 50,50 ... arranged in the lateral direction is in upper and lower It is upwardly formed in identical position, if therefore by rear side outsourcing load 20b in the rear side crooked place parallel with left and right directions It is bent at FL20b, then the position at the joint portion 50 in the position and folded-back part 20bf at the joint portion 50 in non-folded-back part 20bn exists The probability being staggered in up and down direction is higher.

Thus, as shown in figure 5, the joint portion 50 in joint portion 50 and folded-back part 20bf in non-folded-back part 20bn is easy to It is configured with being staggered on up and down direction and the two directions of left and right directions.That is, in non-folded-back part 20bn and folded-back part 20bf, make because Joint portion 50 and cause non-woven fabrics harden part dispersion.Thereby, it is possible to keep the skin sense of touch near waistline opening 1a better It is good.

However, when sanitary napkin 1 is shunk from the state extended in left-right direction, in the rear side outsourcing load 20b of sanitary napkin 1 Surface (non-skin side) form multiple folds for extending along up and down direction.In particular, in the skin with retractility When lateral plate 23 is shunk in the lateral direction, the interval P50r between two joint portions 50,50 adjacent to each other in the lateral direction Constriction, in contrast, non-skin lateral plate 21 is not shunk in the lateral direction, therefore non-skin lateral plate 21 is on thickness direction The mode of non-skin side protrusion deform to forming fold (referring to the B of aftermentioned Fig. 9).

In the present embodiment, the interval (pitch) in the up and down direction between two joint portions 50,50 adjacent to each other P50r is longer than interval (pitch) P50l (P50r > P50l) on left and right directions.Therefore, in rear side outsourcing load 20b in right and left When shrinking upwards, the interval P50l constriction on left and right directions is made in the state of maintain the interval P50r in up and down direction, easily It is arranged more carefully in the lateral direction in being formed as longer straight fold in the up-down direction.By will be beautiful and thinner Many a folds are arranged in the surface of rear side outsourcing load 20b, so as to maintain rear side outsourcing load 20b gas permeability and Aesthetic appeal can bring the impression of the softness of sanitary napkin 1 to user.Further, since the body and pleat of wearer can be controlled Wrinkle the area being actually in contact, therefore is able to ascend skin sense of touch.

In addition, the shape at joint portion 50 is longer rectangle (referring to the B of Fig. 4) in the up-down direction, thus in health When towel 1 shrinks along left and right directions and forms fold, non-skin lateral plate 21 can be by joint portion adjacent to each other in the lateral direction It clamps 50 respective long side part.Thus, which is divided into leader, is easily formed along up and down direction extension Fold.That is, the direction of the fold formed is easy to unanimously be easily formed fold beautiful in appearance, it is easy to that user is allowed to generate More soft impression.

In addition, needing the inclination of joint portion column L50 to form such beautiful fold extended along up and down direction It spends not excessive.In particular, needing to make less than 45 ° of the tilt angle theta 50 of joint portion column L50 (45 ° of 50 < of θ).Assuming that in Jiang Jiao In the case that degree θ 50 is set as 45 ° or more, when rear side outsourcing load 20b is shunk along left and right directions, there are following possibilities: The power acted between joint portion column L50, L50 adjacent to each other along shear direction is larger and fold is caused to interrupt in midway, Or the irregular fold extended along left and right directions is more formd compared with extending along up and down direction.Relative to This, if the tilt angle theta 50 of joint portion column L50 is less than 45 °, the power acted on shear direction is smaller, be easily formed along The beautiful fold that up and down direction extends.

But if the tilt angle theta 50 of joint portion column L50 is larger, seem inclined feelings in the presence of fold is formed by Condition.Moreover, if visual identity is to the inclined pleat in side in the lateral direction in the entire scope of rear side outsourcing load 20b Wrinkle may then bring sanitary napkin 1 to be formed as the asymmetric such impression in left and right to user, produce wearing Shi Huirang user It is raw uneasy.Accordingly, it is desirable to by the tilt angle theta 50 of joint portion column L50 be set as 5 ° or more and 10 ° or less (5 °≤θ 50≤ 10°).In the present embodiment, each joint portion 50 is configured in a manner of θ 50=6.6 °.If such configuration, then make to engage Portion column L50 relative to up and down direction tilt and make rear side outsourcing load 20b shrink in the lateral direction when, be easily formed with it is upper The parallel fold in lower direction, it is not easy to allow user to generate uneasy.

Here, in the manufacturing process of sanitary napkin 1 (outsourcing load 20) by non-skin lateral plate 21 and skin lateral plate 23 (22) method that joint portion 50 (joint portion column L50) is formed when being bonded together carries out simple illustration.Fig. 6 is for engagement The figure that the formation in portion 50 is illustrated.In the Fig. 6, it outlined and (defended using outsourcing load 20 to manufacture absorbent commodity Raw towel 1) manufacturing device a part.In addition, the direction for conveying outsourcing load 20 is set as the direction MD in Fig. 6, it will be with MD The orthogonal direction in direction is set as the direction CD.The direction MD is direction corresponding with the left and right directions of sanitary napkin 1 (outsourcing load 20), The direction CD is direction corresponding with the up and down direction of sanitary napkin 1 (outsourcing load 20).

On one side by the serialgram 21a formed in such a way that non-skin lateral plate 21 is connected in the lateral direction and with skin lateral plate The serialgram 23a that 23 modes being connected in the lateral direction are formed is (defeated along the direction MD with the state being overlapped in a thickness direction Send direction) conveying, joint portion 50 is carried out using a pair of of sealed roller 110A, the 110B in the predetermined position being set on the direction MD on one side Formation.Sealed roller 110A, 110B are the rotations centered on rotary shaft 111A, 111B extended along the direction CD and rotated Swivel is used to apply the convex of pressure (ultrasonic activation) when forming joint portion 50 in the outer peripheral surface of sealed roller 110A equipped with multiple Portion 112.Protrusion 112 is respectively provided with size identical with the size at joint portion 50, shape, shape, by the outer of sealed roller 110A Circumferential surface is adjacent to multiple protrusions 112,112 of arrangement along the direction CD to form protrusion column L112.Protrusion column L112 is configured to Relative to the direction CD with the inclination of θ 112.

Moreover, by (not schemed using the protrusion 112 (protrusion column L112) of sealed roller 110A and the anvil of sealed roller 110B Show) serialgram 21a and serialgram 23a are sandwiched in a thickness direction, and apply ultrasonic activation etc., to form shape Joint portion 50 (joint portion column L50) identical with the shape of protrusion 112 (protrusion column L112), by serialgram 21a and serialgram 23a It is bonded together.

In the case where forming joint portion column L50 as illustrated in fig. 6, it is desirable to the protrusion of sealed roller 110A Arranging L112 has scheduled gradient relative to the direction CD.In other words, it is desirable in the column L112 of protrusion along the direction CD that This adjacent two protrusion 112,112 is configured at the position being staggered in the circumferential direction (being equivalent to the direction MD) of sealed roller 110A.It is false It is located at protrusion column L112 and is configured to the situation parallel with the direction the CD (feelings that the position in the circumferential direction of protrusion 112,112 is not staggered Condition) under, joint portion 50 can be formed in along the side MD by all protrusions 112 contained by the column L112 of some protrusion at the time of identical To serialgram 21a, 23a of conveying.That is, in the circumferential direction (direction MD) of multiple protrusions 112 as contained by the column L112 of protrusion Position is all identical, therefore will disperse serialgram 21a, 23a pressure applied in multiple protrusions 112 by sealed roller 110A, can It can not apply appropriate ultrasonic activation at each protrusion 112, it is bad welding to be generated.In contrast, if constituting protrusion The position arranged in the circumferential direction (direction MD) of each protrusion 112 of L112 is staggered, then can be correspondingly right with the rotation of sealed roller 110A Each protrusion 112 successively applies pressure, therefore is easier to apply appropriate ultrasonic activation.That is, by keeping protrusion column L112 opposite It is tilted in the direction CD, it is bad so as to not allow to be also easy to produce welding.

Preferably, along the direction CD two protrusions 112 adjacent to each other, 112 phases at the outer peripheral surface of sealed roller 110A 0 ° is specifically greater than for the tilt angle (θ 112) in the direction CD and less than 20 °.As described above, if θ 112 is 0 °, pressure It is scattered in multiple protrusions 112,112 ... adjacent in the cd direction, it is possible to the intensity at joint portion be caused to decline.On the other hand, If θ 112 is 20 ° or more, in the case where being intended to be formed uniformly joint portion 50 along the direction CD, joint portion adjacent to each other 50, the pitch between 50 is excessive, and fold easily becomes unevenly, and aesthetics is caused to decline.Accordingly, it is intended that inclined angle Spend θ 112 be greater than 0 ° and less than 20 ° (0 ° of 20 ° of 112 < of < θ), more preferably 5 ° or more and 10 ° or less (5 °≤θ 112≤ 10°)。

Moreover, in order to more reliably inhibit the undesirable generation of welding as described above, it is desirable to sealed roller 110A's In outer peripheral surface along the position of the direction CD two protrusions 112,112 adjacent to each other on the direction MD (being equivalent to left and right directions) not Overlapping.That is, it is desirable to adjacent to each other along up and down direction in the joint portion column L50 for being formed in outsourcing load 20 Two joint portions 50,50 (such as the 1st joint portion 50a and the 2nd joint portion 50b in Fig. 4) be not overlapped in the lateral direction.This If sample, the pressure applied by sealed roller 110A one by one can be successively acted on to the multiple protrusions 112 for constituting protrusion column L112, because This can be reliably formed each joint portion 50.Accordingly, it is intended that be formed in it is in the joint portion column L50 of outsourcing load 20, Two joint portions 50,50 (such as the 1st joint portion 50a and the 2nd joint portion 50b in Fig. 4) adjacent to each other exist in up and down direction It is not overlapped on left and right directions.

In addition, in the present embodiment, the side (right side) as shown in the B of Fig. 4, on the left and right directions of the 1st joint portion 50a The other side (left side) the end 50bel on the left and right directions of 50aer and the 2nd joint portion 50b is held to be in identical in the lateral direction Position.If such configuration, then when forming joint portion 50a, 50b, each joint portion 50a, 50b can properly be applied and The pressure (ultrasonic activation) of the protrusion 112,112 of self-sealing roller 110A, it is not easy to it is bad to generate welding.Also, due to engagement The tilt angle theta 50 of portion column L50 is easily formed at the outsourcing load 20 of sanitary napkin 1 along up and down direction without excessive The straight fold extended.In addition, the tilt angle theta 50 (=6.6 °) of the joint portion column L50 of present embodiment is according to like that Joint portion 50,50 configuration and the value of determination.

< is about 60 > of weld portion

Non- skin lateral plate 21 in outer package panel 20 is equipped with multiple weld portions 60.Fig. 7 is for set on non-skin side The top view that the configuration of the weld portion 60 of piece 21 is illustrated.The Fig. 7 is the non-skin side enlargedly indicated in the state of elongation The figure of a part of piece 21 does not indicate joint portion 50 for ease of description.

The weld portion 60 of present embodiment is the square that such 1 side shown in Fig. 7 is 0.5mm, cross-shaped to match It sets.But the shape of weld portion 60 is not necessarily required to be square, is also possible to the others such as rectangle, circle, polygon Shape.In addition, weld portion 60 between weld portion 60,60 adjacent to each other in the up-down direction interval (pitch) P60r with Interval (pitch) P60l on left and right directions between weld portion 60,60 adjacent to each other equal mode configures regularly (P60r=P60l).In addition, in the present embodiment, a left side of interval P60r and joint portion 50 on the left and right directions of weld portion 60 Interval P50r equal (P60r=P50r) in right direction.

Fig. 8 be indicate to be configured at outsourcing load 20 weld portion 60 and joint portion 50 configuration an example vertical view Figure.The Fig. 8 is the figure for enlargedly indicating a part of the outsourcing load 20 in the state of elongation.The A of Fig. 9 is to indicate outsourcing load 20 in the lateral direction extend after state schematic sectional view.The B of Fig. 9 is to indicate that outsourcing load 20 is shunk in the lateral direction The schematic sectional view of state afterwards.

It is equipped with weld portion 60 and joint portion 50 in outer package panel 20 (non-skin lateral plate 21), the two such as Fig. 8 matches like that It sets.In addition, there is also at the part of outer package panel 20 weld portion 60 overlap each other with the position at joint portion 50 together with feelings Condition.But for weld portion 60 and joint portion 50, pitch (P50r and P60r) at least in up and down direction not phase each other Together, and joint portion column L50 is configured to tilt relative to up and down direction.Thus, in outer package panel 20, the position of weld portion 60 A possibility that not overlapping each other with the position at joint portion 50 is higher.Therefore, as shown in figure 8, adjacent to each other along left and right directions Joint portion column L50, L50 between configured with weld portion 60 more than at least one.

1 is being configured with along between left and right directions two joint portions 50,50 adjacent to each other showing in the A of Fig. 9 The state of weld portion 60.If shrinking outsourcing load 20 (skin lateral plate 23) in the lateral direction from the state, as the B of Fig. 9 Like that, pleat is formed to non-skin side bulging deformation in region of the non-skin lateral plate 21 of non-telescoping property between joint portion 50,50 Wrinkle.At this point, in the convex portion of fold configured with weld portion 60 more than at least one.In the table of non-skin lateral plate 21 (non-woven fabrics) In face, configured with weld portion 60 part and weld portion 60 is not configured part between can generate poor rigidity, therefore, by The convex portion of fold configures weld portion 60, so that also poor rigidity can be generated in the protrusion of fold.Thus, in such poor rigidity Under effect, fold is easily deformable, and feel when user can be made to touch the fold on the surface of outsourcing load 20 is good.In addition, When wearing sanitary napkin 1, fold is easy to deform with the movement of the body of wearer, and stickiness improves.

In addition, in the present embodiment, according to Fig. 8 can it is clear that, being shorter in length than on the left and right directions of weld portion 60 Interval (pitch) P50l on left and right directions between joint portion 50,50.Thus, in two along left and right directions adjacent to each other Configured with each weld portion 60 and the not probability Chong Die with joint portion 50 raising of weld portion 60 between joint portion column L50, L50. It is easy to for weld portion 60 being configured at as a result, and shrinks Shi Xiangfei skin side along left and right directions in outer package panel 20 (skin lateral plate 23) The convex portion of the fold of bulging deformation.

Moreover, as shown in figure 8, the upper and lower being shorter in length than between joint portion 50,50 in the up and down direction of weld portion 60 Upward interval (pitch) P50r.Weld portion 60 is also not easy and joint portion 50 on (and left and right directions) in above-below direction as a result, Overlapping, it is suppressed that the harder situation of the skin sense of touch of outsourcing load 20.

In addition, in the present embodiment, the area S50 (=0.3mm × 0.22mm) at each joint portion 50 is less than each molten The area S60 (=0.5mm × 0.5mm) of socket part 60.Due to the rigidity ratio at the joint portion 50 formed by ultrasonic fusing etc. By the rigidity height for the weld portion 60 that cotton ginning processing is formed, therefore, by making the area S50 at joint portion 50 be less than weld portion 60 Area S60, so as to be not easy that user is allowed to touch the higher part of rigidity in outsourcing load 20.Thereby, it is possible to Inhibit the deterioration of the skin sense of touch of outsourcing load 20.

In addition, rigidity is higher at the part for being formed with joint portion 50 as described above, if therefore joint portion 50 area S50 Excessive, then the natural style of outsourcing load 20 is easy impaired.In addition, the retractility realized by skin lateral plate 23 be easy it is impaired and Stickiness when causing to install deteriorates.In order to inhibit the above problem, the area S50 at joint portion 50 is desired for 0.2mm²Hereinafter, more It is desired for 0.14mm²(S50≤0.2mm below²).On the other hand, if joint portion 50 is too small, it is strong to be unable to get adequately engagement Degree.Thus, in order to ensure sufficient bond strength, the area S50 at joint portion 50 is desired for 0.03mm²More than, it more desirable to it is 0.05mm²(0.03mm above²≤S50)。

In addition, according to Fig. 8 can it is clear that, the area at the joint portion 50 configured in the per unit area of outer package panel 20 Aggregate value be less than the aggregate value of the area of weld portion 60 configured in the per unit area of outer package panel 20.Its reason exists In, it is same as above-mentioned reason, if the area at the joint portion 50 formed in per unit area is excessive, outsourcing load 20 from Right style is easy to be damaged, and retractility is easy impaired.It in the present embodiment, can be by properly adjusting in outer package panel 20 Per unit area in the joint portion 50 that configures and the area of weld portion 60 ratio to make the style of outsourcing load 20 and stretch Contracting is good.

===other===

Above-mentioned embodiment is not used to explain the present invention with limiting for being readily appreciated that the present invention.It is self-evident , the present invention can without departing from its main purpose under the premise of change, improve, and include in the present invention and the present invention Equivalent structure.

In the above-described embodiment, sanitary napkin 1 is illustrated as an example of underpants-type absorbent article, But the present invention can also apply to other absorbent commodities in addition to sanitary napkin.For example, underpants-type absorbent article can also To be children's use, adult diaper, the pant type absorbent pad of underwear type etc..

Claims

1. a kind of underpants-type absorbent article, with up and down direction intersected with each other, left and right directions and thickness direction,

And have using dispersing existing multiple joint portions for the skin lateral plate being laminated on the thickness direction and non-skin Lateral plate is bonded together and the outsourcing load that is formed,

The outsourcing load includes the folded-back part turned back and the non-folded-back part do not turned back to downside in upper end,

On the thickness direction, at least part of the folded-back part is Chong Die with the non-folded-back part, the pant type absorbent Article is characterized in that,

When from unilateral observation on the thickness direction,

At the folded-back part, the joint portion that multiple joint portions by being adjacent to arrangement in the up and down direction are formed is arranged Side inclination on the left and right directions,

At the non-folded-back part, the joint portion arranges the inclination of the other side on the left and right directions.

2. underpants-type absorbent article according to claim 1, which is characterized in that

The position being adjacent in the up and down direction at multiple joint portions of arrangement on the left and right directions is identical,

Being adjacent in the up and down direction at multiple joint portions of arrangement on the left and right directions at the folded-back part Position and the non-folded-back part at the multiple joint portions for being adjacent to arrangement on the left and right directions it is described up and down Position on direction is different.

3. underpants-type absorbent article according to claim 1 or 2, which is characterized in that

The joint portion arranges the tilt angle relative to the up and down direction less than 45 °.

4. underpants-type absorbent article according to claim 3, which is characterized in that

It is 5 ° or more and 10 ° or less that the joint portion, which is arranged relative to the tilt angle of the up and down direction,.

5. underpants-type absorbent article according to claim 1, which is characterized in that

The joint portion column have the 1st joint portion and the 2nd joint portion arranged adjacent to each other in the up and down direction,

1st joint portion and the 2nd joint portion are not overlapped on the left and right directions.

6. underpants-type absorbent article according to claim 1, which is characterized in that

On the left and right directions, the position of another side of the position and the 2nd joint portion of a side at the 1st joint portion It sets identical.

7. underpants-type absorbent article according to claim 1, which is characterized in that

The interval in the up and down direction in the up and down direction between two joint portions adjacent to each other is greater than The interval on the left and right directions on the left and right directions between two joint portions adjacent to each other.

8. underpants-type absorbent article according to claim 1, which is characterized in that

Length in the up and down direction at the joint portion is longer than the length on the left and right directions at the joint portion.

9. underpants-type absorbent article according to claim 1, which is characterized in that

The skin lateral plate is the stretchable sheet on the left and right directions with retractility.

10. underpants-type absorbent article according to claim 1, which is characterized in that

Multiple weld portions of cross-shaped arrangement are equipped in the non-skin lateral plate,

The area of each weld portion is greater than the area at each joint portion.

11. underpants-type absorbent article according to claim 10, which is characterized in that

The summation of the area for the weld portion being arranged in the per unit area of the outsourcing load is greater than in the outer packing The summation of the area at the joint portion being arranged in the per unit area of piece.

12. underpants-type absorbent article described in 0 or 11 according to claim 1, which is characterized in that

Length on the left and right directions of the weld portion, which is less than described in adjacent to each other on the left and right directions two, to be connect The interval on the left and right directions between conjunction portion.

13. underpants-type absorbent article according to claim 10, which is characterized in that

Length in the up and down direction of the weld portion, which is less than described in adjacent to each other in the up and down direction two, to be connect The interval in the up and down direction between conjunction portion.

14. underpants-type absorbent article according to claim 1, which is characterized in that

The area at the joint portion is 0.03mm²Above and 0.2mm²Below.

15. a kind of manufacturing method of underpants-type absorbent article in this manufacturing method will be in thickness using the multiple joint portions of utilization The skin lateral plate that is overlapped and non-skin lateral plate are bonded together on degree direction and the outsourcing load that is formed manufactures pant type absorbent Property article, the manufacturing method of the underpants-type absorbent article be characterized in that,

The manufacturing method includes process below:

Conveying operation with the process for conveying continuous skin side serialgram in the MD direction along the direction MD and is incited somebody to action Continuous non-skin side serialgram is on the direction MD with state Chong Die with skin side serialgram in a thickness direction The process conveyed along the direction MD；And

Bonding process, in this process, using be set to the direction MD on predetermined position and with along with the direction MD just A pair of of the sealed roller rotated centered on the rotary shaft that the direction CD of friendship extends sandwiches the flesh on the thickness direction Skin side serialgram and the non-skin side serialgram to form the joint portion,

The outer peripheral surface of the sealed roller of side in the pair of sealed roller is arranged equipped with protrusion, will be used to form the engagement Multiple protrusions in portion are adjacent to arrangement on the direction CD and arrange to form the protrusion,

In the column of the protrusion, two protrusions adjacent to each other are configured at the week in the sealed roller on the direction CD The position being staggered upwards.

16. the manufacturing method of underpants-type absorbent article according to claim 15, which is characterized in that

Orientation the inclining relative to the direction CD of two protrusions arranged adjacent to each other on the direction CD Rake angle is greater than 0 ° and less than 20 °.