JP6116143B2 - Disposable wearing articles - Google Patents

Description

The present invention relates to a disposable wearable article products which can be used as a diaper cover or the like of a disposable diaper or disposable.

  A disposable diaper or disposable diaper cover in which a pair of side panels, also called wings, extending from one of the front and rear waist areas to the waist direction is formed on a chassis having a front and rear waist area, and a fastener is formed on the side panel Wearing articles such as are well known.

  For example, in the disposable diaper described in Japanese Patent Application Laid-Open No. 2002-45214 (P2002-45214A, Patent Document 1), hooks of mechanical fasteners against wing pieces that are side panels formed on both sides of the back side portion. A fastening tape having a male engagement piece as a member is attached so as to extend to the side of the diaper. The fastening tape has a base material sheet formed of a nonwoven fabric, and a hook member is attached to the base material sheet. The fastening tape is also temporarily attached in a state where the hook member can be peeled from the inner surface of the fastening tape by bending the fastening tape in the lateral direction of the diaper, so-called temporary fastening state. It is in.

JP 2002-45214 A (P2002-45214A)

  For the fastening tape, a relatively rigid nonwoven fabric may be used as a base sheet for the purpose of facilitating the operation when the hook member is attached to or detached from the counterpart member. However, the higher the rigidity of such a base sheet, the stronger the tendency to return to the state before bending even if it is bent, so that the temporarily fixed hook member is peeled off from the other party of temporary fixing. May affect

  Therefore, an object of the present invention is to provide an improved disposable wearing article and a method for manufacturing the same, so that the hook member temporarily fixed is not peeled off from the other party in the process of handling the wearing article. ing.

The present invention targets, chassis and having a side panel and the fastener, wherein together with the chassis having a longitudinal direction and a transverse direction orthogonal to each other, the longitudinal direction front waistline region and the back waist region and the front and rear A crotch region interposed between the waist region, the side panel extends in the lateral direction from both side edges of one of the front and rear waist regions of the chassis, and from the side panel The fastener extends in a lateral direction, and is a disposable wearing article that can repeat the connection of the front and rear waist regions through the side panel by using the fastener.

In this wearing article, the features of the present invention are as follows. That is, the side panel is formed of a nonwoven fabric on the inner surface side of the wearing article, and has a pair of attachment portions for the chassis, and a pair of elastic regions extending in the lateral direction from each of the attachment portions, The attachment part is formed from a nonwoven fabric of thermoplastic synthetic fiber, and the elastic region extends in the lateral direction, a first nonwoven fabric located on the inner surface side of the wearing article, a second nonwoven fabric located on the outer surface side, A side panel elastic member interposed between the first nonwoven fabric and the second nonwoven fabric, and the second nonwoven fabric is fixed to the first nonwoven fabric located on both lateral sides and extending in the front-rear direction. A pair of first regions and an intermediate region located between the pair of first regions, wherein the second nonwoven fabric and the side panel extend in the front-rear direction in the intermediate region. A band-shaped fixing area with the elastic member is arranged at intervals in the lateral direction, and both end portions of the side panel elastic member are fixed to the second nonwoven fabric in the first area, and the side panel elastic member An intermediate portion between both end portions is fixed to the second nonwoven fabric in the intermediate region in an elongated state at a required magnification, and the first nonwoven fabric and the second nonwoven fabric are contracted in the intermediate region by the side panel elastic member contracting. A plurality of gathers extending in the front-rear direction are formed, and the fastener includes a non-extensible base sheet and a hook member of a mechanical fastener attached to the inner surface side of the base sheet. Te, wherein the base sheet is the inner surface on the inside, the transverse along a folding line extending in the longitudinal direction in the fixing zone leading to the elastic regions The hook member is opposed to the first non-woven fabric in the side panel, and is temporarily fixed to the gather of the first non-woven fabric so as to be peelable. The material sheets are in a state in which the base material sheets that are bent and overlapped are in close contact with each other at least at a portion along the folding curve, and the fasteners overlap between the side edges and the side panel. The mounting portion of the side panel is bent inward in the lateral direction, and the both side edge portions and the fastener are bonded to each other through a hot melt adhesive .

  In one embodiment of the present invention, the base sheet is formed of a thermoplastic synthetic fiber non-woven fabric and is permanently deformed in the folding line so that the overlapping base sheets adhere to each other. .

In another embodiment of the present invention, the base sheet is a nonwoven fabric of thermoplastic synthetic fibers having a mass per unit area of 50-120 g / m ² .

In the disposable wearing article according to the present invention, a fastener for connecting the front and rear waist regions includes a base sheet and a hook member of a mechanical fastener. The hook member is attached to the base sheet, and is fixed to the side panel so as to be peelable. The base material sheets that are bent in order to fix the hook members to the side panels are in a state where the base material sheets that are bent and overlapped are compressed along the folding curve and are in close contact with each other. The base sheet in such a state does not act so as to reverse the bent base sheet and peel the hook member from the side panel.

The perspective view of the disposable disposable diaper shown as an example of a disposable wearing article. The partially broken top view of the diaper in the extended state. The partially broken plan view of the expanded elastic region. The fragmentary sectional view of the diaper of FIG. 2 which shows the procedure folded by (a)-(d).

  Taking a disposable diaper as an example of a disposable wearing article, the details of the present invention will be described as follows.

  FIG. 1 is a perspective view of a disposable diaper 1 in a folded state. The diaper 1 can be folded into various shapes in consideration of its planar shape, three-dimensional shape, packing form, and the like, but in the illustrated example, the diaper 1 is folded into a substantially rectangular parallelepiped. The folded diaper 1 is provided to the consumer by the manufacturer through the seller in a state where a plurality of folded diapers 1 are put in a bag or a box. In FIG. 1, the diaper 1 is folded so that the dimension in the front-rear direction A and the lateral direction B becomes smaller and the dimension in the thickness direction C becomes larger. In FIG. 1, a state when the folded diaper 1 is extended in the front-rear direction A is indicated by a virtual line.

  FIG. 2 is a partially broken plan view of the diaper 1 showing the inner surface side when the diaper 1 of FIG. 1 is extended in the front-rear direction A and the lateral direction B. Here, the inner surface when referred to as the inner surface side of the diaper 1 means a surface facing the skin of the wearer of the diaper 1 when the diaper is worn. In addition, the outer surface when it is called the outer surface side about the diaper 1 means the surface which faces the wearer's clothes. In the diaper 1 of FIG. 2, the front-rear direction A is sometimes referred to as the vertical direction A.

  In FIG. 2, the diaper 1 is symmetrical with respect to a center line PP that bisects the dimension in the lateral direction B, and has a chassis 2 formed in an hourglass shape. The chassis 2 has left and right side edges 3a and 3b extending in the front-rear direction A, and front and rear end edges 4 and 6 extending in the horizontal direction B. The left and right here means the left and right for the wearer (not shown). The chassis 2 also has a front waistline region 7, a rear waistline region 8, and a crotch region 9 interposed between the two waistline regions 7, 8 in the front-rear direction A. In the thickness direction C (see FIG. 1), the chassis 2 includes a liquid-permeable top sheet 11, a liquid-impervious back sheet 12, and a body fluid-absorbing core material 13 interposed between these sheets 11 and 12. And have. The back sheet 12 includes a liquid-impervious plastic film 12a that is in contact with the core member 13 and a nonwoven fabric 12b that forms the outer surface of the chassis 2 below the plastic film 12a in the thickness direction C. Is formed. The top sheet 11 and the plastic film 12a overlap at a portion extending from the peripheral edge of the core member 13 and are joined via a hot melt adhesive (not shown). The plastic film 12a and the nonwoven fabric 12b are bonded via a hot melt adhesive (not shown). The chassis 2 also has leakage barriers 16a and 16b extending in the front-rear direction A at the side edges 3a and 3b, respectively. Each of the breakwaters 16a and 16b is formed of a sheet material such as a nonwoven fabric or a plastic film formed of thermoplastic synthetic fiber, and more preferably a nonwoven fabric subjected to water repellent treatment, and the sheet material has a side edge portion. In each of 3a, 3b and each of the front and rear end edges 4, 6, the inner sheet 11 and the outer sheet 12 facing each other are joined to each other via a hot melt adhesive (not shown). Each of the breakwaters 16a and 16b is also formed on the inner surface sheet 11 except that inner edge portions 17a and 17b facing the center line PP are joined to the inner surface sheet 11 at the front and rear edge portions 4 and 6 of the chassis 2. On the other hand, it is in a non-bonded state. Elastic members 21 extending in the front-rear direction A are attached to the inner edge portions 17a and 17b in an extended state. When the diaper 1 is worn and curved in the front-rear direction A so as to form a U shape with the inner surface sheet 11 on the inside, the elastic members 21 contract in the crotch region 9. And the inner edge parts 17a and 17b are separated from the inner surface sheet 11, and become a dike that can prevent the side leakage of body fluid in the crotch region 9.

  The chassis 2 further includes a plurality of leg-hole elastic members 22 extending in the front-rear direction A at both side edges 3a, 3b of the crotch region 9, and a state extending in the lateral direction B at the front-rear end edges 4, 6. The front and rear waistline elastic members 23 and 24 are provided. The leg-hole elastic member 22 is between the outer surface sheet 12 and the sheet material forming the breakwaters 16a and 16b, and is a hot melt adhesive (not shown) on at least one of the outer surface sheet 12 and the sheet material. It is joined via. The front and rear waist elastic members 23 and 24 are located between the inner sheet 11 and the outer sheet 12 and are joined to at least one of these sheets via a hot melt adhesive (not shown).

  In the rear waist region 8 of the diaper 1, left and right side panels 31a and 31b extend in the lateral direction B from both side edge portions 3a and 3b. The pair of side panels 31a and 31b are sometimes called wings, and have attachment portions 32a and 32b for the chassis 2 and elastic regions 33a and 33b extending in the lateral direction B from the attachment portions 32a and 32b, respectively. Each of the fasteners 41a and 41b extends in the lateral direction B from each of the elastic regions 33a and 33b.

In the side panels 31a and 31b, the attachment portions 32a and 32b are formed of a nonwoven fabric of thermoplastic synthetic fibers having a mass per unit area in the range of 25-60 g / m ² . The fineness is in the range of 1-5 dtex. The elastic regions 33a and 33b are formed by interposing a plurality of side panel elastic members 37 between the first nonwoven fabric 34 positioned on the inner surface side of the diaper 1 and the second nonwoven fabric 36 positioned on the outer surface side. Yes. The plurality of side panel elastic members 37 extend in the lateral direction B in parallel with each other, and are bonded to at least one of the first and second nonwoven fabrics 34 and 36, preferably to the first nonwoven fabric 34. Each of the side panels 31a and 31b may be elastically extended or contracted in the lateral direction B while being joined in a tensioned state, that is, in an extended state via an agent, for example, a hot melt adhesive 38. Is possible. In FIG. 2, the elastic region 33a of the left side panel 31a thus formed is shown in a relaxed state, and the elastic region 33b of the right side panel 31b is shown in an extended state. A large number of gathers 39 extending in the front-rear direction A are formed on the first nonwoven fabric 34 of the side panel 31a, but the gathers 39 have disappeared from the first nonwoven fabric 34 of the side panel 31b. Here, the relaxed state means a state where the elastic region and the elastic member that can be elastically expanded are contracted to such an extent that they cannot be contracted elastically. The state in which the elastic member or the like is contracted to such an extent that it can no longer contract due to its contraction force is a relaxed state. Further, even when the elastic member attached to the diaper 1, for example, the side panel elastic member 37 can be elastically extended but cannot be contracted anymore due to the structure of the diaper 1, the elastic member Is in a relaxed state. In the elastic regions 33a and 33b, the first and second nonwoven fabrics 34 and 36 are formed of thermoplastic synthetic fibers having a fineness in the range of 1-5 dtex, and the mass per unit area is in the range of 10-30 g / m ² . Non-woven fabrics such as spunbond-meltblown-spunbond nonwoven fabrics (SMS nonwoven fabrics) are used. Moreover, since the 1st nonwoven fabric 34 is the thing which the hook member 45 in the fastener 41a temporarily stops so that it may mention later, while making it easy to fix, the fluff after the hook member 45 peeled is made. In order to prevent this, it is preferable that the thermoplastic synthetic fiber in the first nonwoven fabric 34 includes a filament. For the side panel elastic member 37, for example, 620 dtex LYCRA (registered trademark) 4.5K CIS can be used by extending 2-3 times. Details of the hot melt adhesive 38 used in the elastic regions 33a and 33b will be described with reference to FIG.

Further, in FIG. 2, each of the fasteners 41 a and 41 b is formed by a third nonwoven fabric 43, a fourth nonwoven fabric 44, and a hook member 45 extending in the lateral direction B from each of the elastic regions 33 a and 33 b. It has a fixing area 46 for 33a and 33b, a fastening area 47 to which the hook member 45 is attached, and a gripping area 48 extending in the lateral direction B from the fastening area 47. The 3rd nonwoven fabric 43 and the 4th nonwoven fabric 44 become the non-extensible base material sheet 40 which can attach the hook member 45 by mutually joining and uniting, and the fineness is the range of 1-7 dtex. It is possible to use a non-woven fabric which is formed by the thermoplastic synthetic fiber and has a mass per unit area in the range of 25-60 g / m ² . Here, non-extensible means that when compared with the elastic regions 33a and 33b formed on the side panels 31a and 31b, the force required to elastically extend the elastic regions 31a and 31b is elastic. This means that the material does not stretch either inelastic or inelastic. In the fasteners 41a and 41b, the third nonwoven fabric 43 and the first nonwoven fabric 34 are joined in the fastening region 47 and the holding region 48, the fourth nonwoven fabric 44 and the second nonwoven fabric 36 are joined and fixed in the fixing region 46. In joining the 3rd nonwoven fabric 43 and the 4th nonwoven fabric 44 in the area | region 46, a hot melt adhesive can be used and a nonwoven fabric can be welded intermittently. However, the 3rd nonwoven fabric 43 and the 4th nonwoven fabric 44 peel easily, in order to make it easy to hold in the holding area 48 of the fastener 41a, and to make the operation when using the hook member 45 easy. The composite sheet has a mass per unit area of 50 to 120 g / m ² and a thickness of 0.2 to 0.5 mm and has higher bending rigidity than other members in the diaper 1. It is preferable to form the base material sheet 40 which is. For that purpose, joining by the hot melt adhesive and joining by welding can be used in combination with the third nonwoven fabric 43 and the fourth nonwoven fabric 44. The thickness of the base sheet 40 is a value when measured using a caliper. The hook member 45 is non-extensible at least in the lateral direction B, and a hook member that is a component of a mechanical fastener known by a name such as Velcro (registered trademark) may be used for the hook member 45. it can. The number of hook elements in the hook member 45 may be selected as appropriate. An example of a preferable number is 30-50 pieces per 25 mm length in each of the front and rear directions A and B in the hook member 45. It is. In the diaper 1 of FIG. 2, the front waistline region 7 and the back waistline are connected via the side panels 31 a and 31 b by fastening the hook member 45 to the nonwoven fabric 12 b in the outer surface sheet 12 of the front waistline region 7 when wearing it. Connect area 8. The nonwoven fabric 12b is formed so as to be able to act as a loop member that is a counterpart of the hook member 45, and the front waistline region 7 and the back waistline region 8 can be repeatedly connected.

FIG. 3 is an enlarged view of the elastic region 33b of the side panel 31b in FIG. 2 and a part of the first nonwoven fabric 34 is broken. In the second nonwoven fabric 36 in the side panel 31 b, the hot melt adhesive 38 is applied with a width of 7-25 mm, and first application areas 51 extending in the front-rear direction A are formed on both sides of the second nonwoven fabric 36. Between the first application areas 51 and 51, the hot melt adhesive 38 is applied with a width S ₁ of ₁ to 5 mm, and a plurality of strips of the strip-shaped application part 53 extending in the front-rear direction A has an interval S of 1 to 5 mm. _{A second} application region 52 is formed with two gaps. The side panel elastic member 37 is joined to the second nonwoven fabric 36 at both end portions 37a in the first application region 51, preferably in a non-stretched state. The side panel elastic member 37 is also joined to the second nonwoven fabric 36 at the belt-like application portion 53 of the second application area 52 with the intermediate portion 37b between the both end portions 37a and 37a being in the extended state at the required magnification. . The first nonwoven fabric 34 is joined to the second nonwoven fabric 34 in the first application area 51 and the second application area 52. The elastic region 33b formed in this manner is such that the first and second nonwoven fabrics 34 and 36 in the second application region 52 are converted into the side panel in FIG. 2 when the side panel elastic member 37 contracts at the intermediate portion 37b. As illustrated by the elastic region 33a, it contracts while forming a gather 39 (see FIG. 2). In the side panel 31b, the illustrated application pattern of the hot melt adhesive 38 may be applied to the first nonwoven fabric 34. Moreover, it is preferable that the hot melt adhesive 38 for forming the plurality of gathers 39 extending in parallel in the front-rear direction A on the first nonwoven fabric 34 in an orderly manner is applied to the first nonwoven fabric 34.

FIGS. 4A to 4D are views showing a procedure when the side panels 31a and 31b are folded in order to obtain the diaper 1 of FIG. 1 from the diaper 1 of FIG. 2, taking the side panel 31a as an example. 4A is a cross-sectional view taken along the line IV-IV in FIG. 2, and the side panel 31a and the fastener 41a are in a flat state and extend in the lateral direction B. FIG. The elastic region 33a in the side panel 31a is in a contracted state, and a large number of gathers 39 are formed so as to repeat undulations in the lateral direction B. In the chassis 2, the leakage breaker 16 a is in a state of lying on the core material 13. In the side edge part 3a of the chassis 2, a part of the attachment part 32a in the side panel 31a is interposed between the sheet material forming the leakage barrier 16a and the nonwoven fabric 12b forming the outer sheet 12. Yes. Those overlapping at the side edge 3a are joined via a hot melt adhesive (not shown). Fastener 41a is the direction indicated by the first folding line F ₁ arrow G ₁ along _(see FIG. 2) extending in the longitudinal direction A in a fixed region 46 leading to the elastic region 33a, i.e. toward the inner surface side of the diaper 1 It is bent.

In FIG. 4B, the hook portion 45 of the bent fastener 41 a abuts on a gather 39 formed on the inner surface side of the elastic region 33 a, and protrudes toward the hook member 45 in the gather 39. The plurality of raised portions are temporarily fixed to the first nonwoven fabric 34 so as to be peelable and are temporarily fixed. However, the hook member 45 does not adhere to the first nonwoven fabric 34 in the gather 39 that forms a valley toward the hook member 45. In (b) of FIG. 4 also if a fixed area 46 overlaps the first along the folding line F ₁ by being bent is in contact, more preferably in close contact. In the preferred fastener 41a, the portions indicated by E ₁ and E ₂ are compressed in the thickness direction C so that the overlapping state of the overlapping fixing regions 46 can be made as thin as possible. The parts E ₁ and E ₂ are parts along the first folding line F ₁ at least in the lateral direction B from the first folding line F ₁ to the hook member 45. It is preferable to carry out the compression on the sites E ₁ and E ₂ under heating. However, the heating is performed at a softening temperature or lower than the softening temperature of the thermoplastic synthetic fibers so that the thermoplastic synthetic fibers forming the third nonwoven fabric 43 and the fourth nonwoven fabric 44 are not melted. It is preferable to do. In the compression under heating, the base sheet 40 can be permanently deformed at the first folding line F _{1 and} the bent state of the base sheet 40 can be maintained until the diaper 1 is worn. Is preferred. For the compression, press rolls R ₁ and R ₂ indicated by a pair of virtual lines whose surface temperature is set to the softening temperature or lower than the softening temperature can be used. As an example, when the third nonwoven and fourth nonwoven is a spunbonded nonwoven fabric formed of filaments of polypropylene, the surface temperature of the press rolls R _1, R ₂ can be set to 100-90 ° C.. The permanent deformation here refers to the shape when deformed or approximated to the shape when the base sheet 40 compressed and deformed under heating is released from compression and cooled to room temperature. It means that it is maintained. If at least one of the pair of press rolls R ₁ and R ₂ used for compression has a knurled surface on its peripheral surface, the base sheet 40 becomes a pair of press rolls R ₁ and R _2. Slip between the base sheet 40 and the press rolls R ₁ and R ₂ can be prevented when passing between the _two . Incidentally, when compressing a portion E _1, E _2, as is not that compresses the hook member 45 by the hook member 45 is advanced between a pair of press rolls R _1, R _2, a pair of rolls R ₁ , R ₂ , it is necessary to pay attention to the positioning of the base sheet 40. Further, in FIG. 4B, a temporary fixing hot melt adhesive 56 is applied to the portion H in the bent base sheet 40. The hot melt adhesive 56 can be applied not only to the base sheet 40 but also to cut the base sheet 40 and the side panel 31a vertically. However, it is preferable to apply only to the base material sheet 40 in order to avoid the hot melt adhesive 56 from touching the wearer's skin when the diaper 1 is worn. The hot melt adhesive 56 is applied continuously or intermittently in the front-rear direction A so that the coating amount per unit area is in the range of 15-45 g / m ² , more preferably in the range of 20-35 g / m ^2. Can be applied. The hot melt adhesive 56 can also be applied so that the application width falls within the range of 1-5 mm, more preferably within the range of 2-3 mm. In the transverse direction B of the fastener 41a, it is preferable that a distance of at least 3mm between the sites H and the first fold line F _1. If there is such a separation distance, the overlapping fixed area 46 can be held. In the diaper 1 finished coating of the hot melt adhesive 56, the side panels 31a of the fastener 41a overlaps along the second folding line F _2, is bent in the direction indicated by the arrow G _2. Second folding line _{F 2} extend in the front-rear direction A in the mounting portion 32a of the side panel 31a (see FIG. 2).

4C, the side edge 3a, the fastener 41a, and the side panel 31a of the chassis 2 overlap each other, and the side edge 3a and the fastener 41a are detachably joined via the hot-melt adhesive 56 for temporary fixing. doing. The diaper 1 in the state of (c) is along the third folding line F _3, the diaper 1 in the state of being bent in the direction indicated by the arrow G ₃ (d). Third folding line F ₃ is, in the substantially matched positions the side edges of the core 13 in the crotch region 9 of the chassis 2, and longitudinal chassis 2 (see Figure 2).

In the diaper 1 in which the side panel 31a, the fastener 41a, and the chassis 2 are in such a bent state, the side panel 31b, the fastener 41b, and the chassis 2 are further bent so as to be symmetrical with the bent state. The dimension in the lateral direction B is reduced. When the diaper 1 is further folded in the front-rear direction A so that the front waistline region 7 overlaps the crotch region 9 and the rear waistline region 8 overlaps the front waistline region 7, the diaper 1 becomes the diaper 1 in the state of FIG. In the diaper 1, the first, second, and third folding curves F ₁ , F ₂ , and F ₃ are folding curves that do not intersect the hook member 45.

In the diaper 1 folded in this manner, the hook members 45 are fixed to the gathers 39, thereby eliminating the swinging of the fasteners 41a and 41b in the manufacturing process of the diaper 1, and the elasticity of the side panels 31a and 31b. The regions 33a and 33b can be prevented from extending or contracting, which can contribute to the realization of a high-speed and smooth flow of the workpiece, which is an intermediate product of the diaper 1. In work such as caregivers when trying to widen the folded diaper 1, the width of the diaper 1 can be gradually widened by proceeding from FIG. 4- (d) to FIG. 4- (a). Since the side panels 31a and 31b and the fasteners 41a and 41b do not move in an unexpected direction, the shape of the unfolded diaper 1 can be easily adjusted, and it does not take time to wear the diaper 1. In the folded diaper 1, the hook member 45 that is fixed only to the raised portion of the gather 39 has an area where the hook 39 is fixed to the side panels 31 a and 31 b. It is easier to peel off the hook member 45 from the side panels 31a and 31b than the area when the flat side panels 31a and 31b are not fixed. The hook member 45 acting in this manner on the elastic regions 33a and 33b has a dimension N in the lateral direction B (see FIG. 4A) and a dimension M in the lateral direction B of the elastic regions 33a and 33b (see FIG. 4). -See (a)). However, the present invention can be practiced with the dimension N equal to or smaller than the dimension M. When the dimension N is smaller than the dimension M, in the lateral direction B, the portion close to the center line P (see FIG. 2) of the diaper 1 in the elastic regions 33a and 33b, for example, FIG. 2 and FIG. the inner edge 35 with the hook member 45 is an elastic band 33a, so that it can be fastened to 33b, it is preferable to appropriately select the first position of the folding lines F ₁ in the diaper 1.

In each of the fasteners 41a and 41b fastened to the gather 39, the fasteners 41a and 41b in the case where the overlapping fixing regions 46 are in close contact with each other are shown in FIG. 4 in a portion where the fixing region 46 includes the parts E ₁ and E ₂ . In the process of manufacturing the diaper 1 and the process of handling the diaper 1, the hook member 45 does not peel off from the gathers 39 without being automatically returned to the flat state in (a). In the fixed region 46, the third nonwoven fabric 43 and the fourth nonwoven fabric 44 are bonded to each other, the mass per unit area is in the range of 50 to 120 g / m ² , and is a highly rigid portion in the diaper 1. Therefore, when the fixing area 46 in a flat state is bent along the first folding line F ₁ , not only the fixing area 46 is bent but also a pair of heated rolls R ₁ , R fastener 41a compresses while bending the fixed zone 46 between the _two, thereby permanently deforming in bending lines F ₁ to the base sheet 40 in 41b, fasteners 41a, are bent state of 41b is bent It is preferable in order not to return to the flat state before the operation. In addition, the fixed areas 46 in the case where the press rolls R ₁ and R ₂ are used to be folded at the portions E ₁ and E ₂ and are in close contact with each other are more than the fixed areas 46 that are simply folded and overlapped. Not only can the thickness be reduced, but the pattern of the roll peripheral surface that has been knurled can also be copied, resulting in a gripping portion that is thin and that does not slip on the fingertip.

  The fasteners 41a and 41b are also detachably joined to the chassis 2 via the temporary fixing hot melt adhesive 56 in FIG. 4C, so that the process of manufacturing the diaper 1 and the diaper 1 are performed. In the process of handling, it is easy to maintain the folded state. The hot melt adhesive 56 in the state of (c) of FIG. 4 does not get in the way of holding the folded fixed area 46.

  The present invention described taking the disposable diaper 1 as an example can be implemented as a disposable diaper cover that does not include the core material 13. The elastic regions 33a and 33b including the first and second nonwoven fabrics 34 and 36 and the elastic member 37 can be replaced with an elastic region formed only of a nonwoven fabric including elastic yarns such as urethane elastic yarns. Such elastic regions 33a and 33b are such that no gathering occurs even in a relaxed state, that is, in a contracted state, but by temporarily fixing the hook member 45, expansion and contraction can be suppressed. . The outer surface sheet 12 in the front waistline region 7 may be provided with a target zone for fixing the hook member 45 in a peelable manner. In the target zone, a non-woven fabric different from the non-woven fabric 12b forming the outer sheet 12 or a loop member other than the non-woven fabric can be used.

1 Disposable wearing articles (disposable diapers)
2 Chassis 3a, 3b Side edge portion 7 Front waistline region 8 Rear waistline region 9 Inseam region 31a, 31b Side panel 33a, 33b Elastic region 34 Nonwoven fabric (first nonwoven fabric)
36 Nonwoven fabric (second nonwoven fabric)
37 Elastic member (side panel elastic member)
38 Adhesive 39 Gather 40 Base sheet 41a, 41b Fastener 43 Nonwoven fabric (third nonwoven fabric)
44 Nonwoven fabric (4th nonwoven fabric)
45 Hook member
51 First application area (first area)
52 Second application area (intermediate area)
53 Band-shaped coating part (band-shaped fixed area)
A Front-back direction (vertical direction)
B Horizontal direction F _One fold curve (first fold curve)
R ₁ , R ₂ press roll

Claims (3)

A crotch region having a chassis, a side panel, and a fastener, the chassis having a front-rear direction and a lateral direction perpendicular to each other, and interposed between the front waistline region, the rear waistline region, and the front-rear waist region in the front-rear direction The side panel extends in the lateral direction from both side edge portions in one of the front and rear waist regions of the chassis, and the fastener extends in the lateral direction from the side panel. It is a disposable wearing article that can repeat the connection of the front and rear waistline regions through the side panel by using the fastener,
The side panel is formed of a nonwoven fabric on the inner surface side of the wearing article, and has a pair of attachment portions with respect to the chassis, and a pair of elastic regions extending in the lateral direction from each of the attachment portions,
The attachment portion is formed from a nonwoven fabric of thermoplastic synthetic fiber,
The elastic region extends in the lateral direction between the first nonwoven fabric located on the inner surface side of the wearing article, the second nonwoven fabric located on the outer surface side, and is interposed between the first nonwoven fabric and the second nonwoven fabric. A side panel elastic member,
The second non-woven fabric is a pair of first regions that are fixed to the first non-woven fabric that is located on both sides in the lateral direction and extends in the front-rear direction, and an intermediate region that is located between the pair of first regions. Have
In the intermediate region, extending in the front-rear direction, a band-shaped fixing region of the second nonwoven fabric and the side panel elastic member is arranged at intervals in the lateral direction,
Each of both end portions of the side panel elastic member is fixed to the second nonwoven fabric in the first region, and an intermediate portion between the both end portions of the side panel elastic member is extended in a required magnification in the intermediate region. Fixed to the second nonwoven,
In the intermediate region, a plurality of gathers extending in the front-rear direction are formed in the first nonwoven fabric and the second nonwoven fabric by contracting the side panel elastic member,
The fastener has a non-extensible base sheet and a hook member of a mechanical fastener attached to the inner surface side of the base sheet, and the base sheet has the inner surface side inside, The hook member is opposed to the first nonwoven fabric in the side panel by being bent inward in the lateral direction along a folding line extending in the front-rear direction in the fixed region connected to the elastic region , Affixed to the gathers of the first nonwoven fabric so as to be peelable and temporarily fixed,
The base sheet is in a state in which the base sheets that are bent and overlapped are in close contact with each other at least along the folding line,
Between the both side edge portions and the side panel, the attachment portion of the side panel where the fastener overlaps is bent inward in the lateral direction, and the both side edge portions and the fastener are hot-melt bonded. wearing article you characterized by being peelably bonded via the agent.   The wearing article according to claim 1, wherein the base sheet is formed of a nonwoven fabric of thermoplastic synthetic fibers and is permanently deformed in the folding line so that the overlapping base sheets are in close contact with each other. The base sheet is worn article according to claim 1 or 2, wherein a nonwoven fabric of thermoplastic synthetic fibers having a mass per unit area of 50-120g / m ^2.

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