JP2006130042A - Disposable absorbent article and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper which prevents scattering of an adhesive effectively and facilitates the control of adhesive application. <P>SOLUTION: The disposable diaper 10 comprises an exterior sheet 11 and an interior sheet 12 which are arranged in an overlapped state and leg elastic members 16. The leg elastic members are stretched and arranged along leg opening peripheral section regions B located on the right and left sides of a crotch corresponding region A between both these sheets 11, 12. A leg adhesive applying region P for attaching the leg elastic members 16 is located on a middle section region C including the right and left leg opening peripheral section regions B and a middle section extending in the longitudinal direction between the right and left opening peripheral section regions B. A hot melt adhesive is applied spirally in the longitudinal direction all over the leg adhesive applying region P to form a plurality of rows of spirally applied sections 19. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of a disposable absorbent article such as a disposable diaper and a method for producing the disposable absorbent article.

  Today, there is an increasing demand for pants-type disposable diapers that fit the wearer's body with stretch around the waist and legs, and are increasingly used for children and adults. It is coming.

  Such disposable diapers are preferred because they are easy to raise and lower when worn due to the elasticity of the waistline and the like, and are particularly easy to squeeze and take off when elderly people are excretion care. .

  And as a structure of the leg periphery part in such a pants-type disposable diaper, there exists a thing of the structure which has arrange | positioned the elastic member of the expansion | extension state between the inner and outer sheets, and formed what is called leg gathers (for example, patent document 1 or Patent Document 2).

  That is, according to Patent Document 1, a hot melt adhesive is sprayed onto a sheet from a hot melt adhesive discharge nozzle and applied in a curtain shape, and a stretched elastic member is applied to the position corresponding to the peripheral edge of the leg opening. And then, another sheet is laminated on the sheet to which the elastic member is bonded. And after that, an absorption main body is adhere | attached and it is set as the structure by which each disposable diaper is manufactured through a two-fold process, a side side edge adhesion process, and a cutting process.

  Further, according to Patent Document 2, as shown in FIG. 8, a pressure-sensitive adhesive such as a hot melt adhesive is applied in a spiral shape to the pressure-sensitive adhesive area 2 at the peripheral edge of the leg opening in the backsheet 1, and this pressure-sensitive adhesive is applied. The elastic members 3a and 3b in the stretched state are attached to the adhesive area 2 along the periphery of the leg opening, and the top sheet 5 is overlapped and joined in a state where the absorbent core 4 is disposed at a predetermined position and folded in two. It is set as the structure by which a disposable diaper is manufactured by joining the both-sides edge with a heat seal means in the piled-up state. In the figure, reference numeral 6 denotes an elastic member for forming waist gathers, which has a structure attached to the peripheral edge of the waist opening via an adhesive.

Japanese Patent No. 2774441 Japanese Patent No. 2664501

  However, according to the adhesive application method disclosed in Patent Document 1, since the hot melt adhesive is sprayed from the discharge nozzle in a curtain shape, the adhesive is scattered outside the application region. As a result, inconvenience may occur in the manufacturing apparatus and product.

  In addition, according to the adhesive application method as disclosed in Patent Document 2, the adhesive is spirally applied only to the curved adhesive area 2 to which the elastic members 3a and 3b are attached. There has been a problem that positioning control of the application position in the apparatus becomes difficult.

  Therefore, an object to be solved by the present invention is to provide a disposable absorbent article that can effectively prevent the scattering of the adhesive and can be easily controlled during the application of the adhesive, and a method for manufacturing the same.

  In order to solve the above-mentioned problems, in the invention of claim 1, an outer sheet and an inner sheet arranged in a superposed state with each other, and a leg opening periphery provided on each of the left and right sides of the crotch corresponding region between the two sheets In a disposable absorbent article having a leg elastic member mounted along a partial area and bonded to the leg elastic member in an expanded state, an adhesive application region for adhering the leg elastic member Is the left and right leg opening peripheral region and the intermediate region sandwiched between the left and right leg opening peripheral region, and the adhesive extends along the left and right direction over the entire adhesive application region. A spiral coating portion coated in a spiral shape is provided in a plurality of rows.

  Moreover, in invention of Claim 2, in the disposable absorbent article which concerns on invention of Claim 1, it is set as the structure where each said spiral-shaped application part arrange | positioned adjacently was mutually overlapped.

  Furthermore, in the invention of claim 3, in the disposable absorbent article according to claim 1 or claim 2, the adhesive is further applied in stripes along the left-right direction over the entire adhesive application region. It is set as the structure provided with the shape-like application part.

  According to a fourth aspect of the present invention, in the disposable absorbent article according to any one of the first to third aspects of the present invention, the leg elastic member is adapted to correspond to the crotch from one leg opening peripheral region. The other leg opening peripheral region is disposed through the region, and the leg elastic member is weakened by cutting in the crotch region.

  Further, according to the invention of claim 5, the exterior sheet and the interior sheet arranged in a superposed state with each other and the leg opening peripheral area provided on both the left and right sides of the crotch corresponding area between the two sheets are mounted. In the method for manufacturing a disposable absorbent article, wherein the leg elastic member is bonded in an extended state, the left and right legs of at least one of the exterior sheet and the interior sheet The adhesive is applied spirally along the left-right direction over the entire area in the left-right direction of the opening peripheral edge region and the intermediate portion sandwiched between the left and right leg opening peripheral edge regions. The leg elastic member is extended to the spiral application step of forming a row and the leg opening peripheral region where the spiral application part is formed. And a sheet polymerization step of polymerizing the other interior sheet or exterior sheet on the exterior sheet or interior sheet to which the leg elastic member is attached. .

  According to a sixth aspect of the present invention, in the method for manufacturing a disposable absorbent article according to the fifth aspect of the present invention, in the spiral-shaped application step, the spirally-applied portions disposed adjacent to each other are overlapped with each other. It is said that.

  Furthermore, in the invention of claim 7, in the method for manufacturing a disposable absorbent article according to claim 5 or 6, the pre-process of the elastic member bonding step is at least one of the exterior sheet and the interior sheet. The adhesive is applied in stripes along the left-right direction over the entire left-right direction of the left and right leg opening peripheral edge regions and the intermediate portion sandwiched between the left and right leg opening peripheral edge regions. The method further includes a stripe coating process for forming a portion.

  In the disposable absorbent article according to the first aspect of the present invention, the adhesive application region for adhering the leg elastic members is the left and right leg opening peripheral region and the left and right leg opening peripheral region. It is the entire region in the left-right direction of the sandwiched intermediate portion, and has a structure including a plurality of rows of spiral application portions in which the adhesive is applied spirally along the left-right direction over the entire adhesive application region. When applying the adhesive, it was not a method of spraying and applying the adhesive, but it was possible to effectively prevent the scattering of the adhesive, and it was applied in a continuous spiral shape over the entire adhesive application area extending to the entire length in the left-right direction. It is only necessary to form a plurality of spiral application portions, and there is an advantage that control in adhesive application can be easily performed. And since it is the structure apply | coated spirally compared with the case where an adhesive agent is apply | coated to the whole surface, it becomes a linear partial application | coating and there exists an advantage which can ensure the softness | flexibility as a disposable absorbent article favorably.

  In addition, according to the second aspect of the present invention, since the adjacent spiral application portions are overlapped with each other, the contact position between each spiral application portion and the leg elastic member is increased. As a result, there is an advantage that the adhesive strength of the leg elastic member can be improved in the peripheral edge region of the leg opening.

  Furthermore, according to the invention described in claim 3, since the stripe-shaped application portion is further provided in which the adhesive is applied in a stripe shape along the left-right direction over the entire adhesive application region. In addition to the portion, the contact position by the stripe-shaped application portion and the leg elastic member can be increased, and there is an advantage that the adhesive force of the leg elastic member in the leg opening peripheral region can be further improved.

  According to the invention of claim 4, the leg elastic member is disposed from one leg opening peripheral region to the other leg opening peripheral region through the crotch corresponding region, and also corresponds to the crotch. Since the leg elastic member is structured to be weakened by cutting in the region, the leg elastic member is displaced by the contracting action of the leg elastic member at an undesired position or in the region corresponding to the crotch. There is an advantage that unwanted shrinkage deformation can be effectively prevented.

  Furthermore, in the manufacturing method of the disposable absorbent article according to the invention described in claim 5, the left and right leg opening peripheral regions and the left and right leg opening peripheral portions in at least one of the exterior sheet and the interior sheet Spiral application process for forming a plurality of rows of spiral application parts by spirally applying an adhesive along the left and right direction across the entire region in the left and right direction of the intermediate part sandwiched between the part regions, and a spiral application part The elastic member adhering step for attaching the leg elastic member in a stretched state to the leg opening peripheral region where the leg elastic member is formed, and the other inner sheet or outer sheet to the outer sheet or inner sheet to which the leg elastic member is attached. A method of polymerizing a sheet, and a method of spraying the adhesive on the occasion of applying the adhesive. It is not necessary to form a plurality of rows of spirally coated portions that are coated in a continuous spiral shape over the entire length of the adhesive applied region that extends to the entire length in the left-right direction, as well as effectively preventing the scattering of the adhesive. There is an advantage that control in adhesive application can be easily performed. And since it is the structure apply | coated spirally compared with the case where an adhesive agent is apply | coated to the whole surface, it becomes a linear partial application | coating and there exists an advantage which can ensure the softness | flexibility as a disposable absorbent article favorably.

  According to the invention of claim 6, in the spiral application step, the spirally applied parts arranged adjacent to each other are overlapped with each other, and each spirally applied part and the leg elastic member, The contact position can be increased, and there is an advantage that the adhesive strength of the leg elastic member in the leg opening peripheral region can be improved.

  Furthermore, according to the invention described in claim 7, as a pre-process of the elastic member bonding step, the left and right leg opening peripheral areas and the left and right leg openings in at least one of the exterior sheet and the interior sheet It is a method further comprising a stripe-shaped application step of forming a stripe-shaped application portion by applying an adhesive in a stripe shape along the left-right direction across the entire horizontal direction of the intermediate part sandwiched between the peripheral areas, and each spiral application In addition to the portion, the contact position by the stripe-shaped application portion and the leg elastic member can be increased, and there is an advantage that the adhesive force of the leg elastic member in the leg opening peripheral region can be further improved.

<First Embodiment>
<Structure>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a disposable diaper 10 as an example of a disposable absorbent article includes an outer exterior sheet 11 and the same as the conventional one. The inner interior sheet 12 and an absorbent pad body mounted on the inner side are provided.

  The disposable diaper 10 is configured in a pants shape having a waist opening 13 and left and right leg openings 14, and is positioned in the waist opening 13 and the leg opening 14, so that the exterior sheet 11 and the interior The waist gathers and leg gathers are configured by the plurality of waist elastic members 15 and the plurality of leg elastic members 16 embedded in a stretched state between the sheets 12 and the like.

  For example, the exterior sheet 11 is made of a water-repellent nonwoven fabric having thermoplasticity, the interior sheet 12 is made of a liquid-permeable nonwoven fabric having thermoplasticity, and the waist elastic member 15 or the leg elastic member 16. As an elastic elastic material (polyurethane yarn, polyurethane film, natural rubber, etc.) generally used for disposable diapers is used. Further, the absorbent pad body is, for example, a paper sheet such as tissue paper or a liquid-permeable nonwoven sheet coated with a mass obtained by mixing a granular polymer absorber in a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber. It is configured to be wrapped in a sheet and molded into a predetermined shape.

  FIG. 2 shows the unfolded state of the exterior sheet 11 portion, and a semicircular shape and a semi-circle for forming leg openings 14 are formed on the left and right sides of the crotch corresponding area A corresponding to the crotch of the wearer. An oval leg cutout 17 is formed, and each leg opening peripheral area B along the leg cutout 17 and the left and right leg opening peripheral areas B are formed along the leg cutout 17. A region covering the entire left and right direction with the intermediate portion region C of the intermediate portion sandwiched between them is a leg adhesive application region P for bonding the leg elastic member 16.

  The leg adhesive application region P is provided with a spiral application portion 19 in which an adhesive, for example, a hot melt adhesive is applied spirally along the left-right direction, as shown in FIG. The spiral application portion 19 has a structure in which a plurality of rows are provided in the vertical direction so as to cover the entire leg adhesive application region P.

  In particular, in the present embodiment, the spiral-shaped application portions 19 arranged in a plurality of rows are applied so that the spiral-shaped application portions 19 arranged adjacent to each other overlap each other.

  As shown in FIG. 3, the application width S of each spiral application portion 19 is, for example, 3 to 20 mm, preferably 5 to 15 mm. Further, the overlap width T of the spiral application portions 19 that overlap each other may be set to a suitable value as necessary.

  Then, a plurality of leg elastic members 16 paired with the leg adhesive application region P to which the hot melt adhesive is applied as described above are in the stretched state, and one leg opening peripheral portion. Along with each of the regions B, the crotch corresponding regions A are guided in parallel with each other, and are further adhered in an arc along the other leg opening peripheral region B.

  Moreover, in this embodiment, the weakening process cut | disconnected with a cutter blade etc. is given in the crotch corresponding area A in the bonded elastic member 16 for legs, and the elastic member for legs in the crotch corresponding area A The contraction action by 16 is controlled.

  Further, the front and rear waist portion corresponding regions D corresponding to the waist opening portions 13 in the exterior sheet 11 are also provided with a waist adhesive application region Q over the entire left and right direction. In the same manner, a plurality of rows of spiral application portions 20 in which an adhesive, for example, a hot melt adhesive is applied in a spiral shape along the left-right direction are provided in an overlapping state.

  A plurality of waist elastic members 15 are bonded to the waist adhesive application region Q to which the hot melt adhesive is applied in parallel in the left-right direction in the stretched state. ing.

  As in the case of the absorbent core 4 as shown in FIG. 8, an absorbent pad body formed in an appropriate shape is disposed at a predetermined position on the exterior sheet 11 thus configured, and the interior sheet 12 is in a polymerized state thereon. The disposable diaper 10 is configured by joining the two side edges with heat sealing means such as ultrasonic welding in the state of being overlapped and joined to each other and folded in two.

<Manufacturing method>
Next, an example of a method for manufacturing the disposable diaper 10 will be described with reference to FIGS. 4 and 5. The leg adhesive application region P on the upper surface of the exterior sheet 11 having an appropriate width to be gradually fed out and used for the waist Corresponding to the adhesive application region Q, a hot melt adhesive is supplied in a spiral shape by an adhesive application device (not shown) disposed at a predetermined position (spiral application process).

  At this time, since the exterior sheet 11 is moved along the predetermined conveying direction R, each spiral application applied in a spiral manner to the leg adhesive application region P and the waist adhesive application region Q. The part 19 and each spiral-shaped application part 20 are continuously formed along the transport direction R, that is, the left-right direction.

  Then, on the downstream side in the transport direction R, each leg-shaped application portion 19 or each spiral-shaped application portion 20 is formed at a predetermined position in the leg adhesive application region P or the waist adhesive application region Q. The elastic member 16 and the elastic member 15 for waist are supplied in an expanded state and attached in a sticking shape (elastic member bonding step).

  Thereafter, the leg elastic member 16 disposed in the crotch corresponding region A is subjected to weakening processing at a predetermined position on the downstream side (weakening processing step). The absorbent pad body 22 is supplied in a predetermined posture onto the intermediate region C between B (absorbent pad body supply step). At this time, the supplied absorbent pad body 22 is attached in a sticking manner by the spiral application portions 19 applied to the intermediate region C.

  Thereafter, the interior sheet 12 having the same width as the exterior sheet 11 is sequentially supplied in a polymerized form, and each spiral application unit 19 applied to the leg adhesive application region P and the waist adhesive application region Q The spiral application unit 20 is put into a sticking state (sheet polymerization step).

  Next, in the punching process section 24, the position corresponding to the leg opening 14 is punched into a circle or an ellipse by a rotary die cutter or the like (punching process). Thereafter, the sheet is folded in half at the half-folding process section 25 (two-folding process), and the side seal 27 is performed by ultrasonic welding using an ultrasonic welding apparatus (not shown) in the side sealing process section 26 (side sealing process), and the cutting process. The desired disposable diaper 10 is sequentially manufactured by cutting the central portion of the side seal 27 at the portion 28 (cutting step).

  The disposable diaper 10 of the present embodiment is configured as described above, and when applying a hot melt adhesive for fixing the leg elastic member 16, an adhesive as disclosed in Patent Document 1 is applied by spraying. In addition to effectively preventing the scattering of the adhesive, a plurality of rows of spiral application portions 19 applied in a continuous spiral shape are formed over the entire length of the leg adhesive application region P extending in the entire length in the left-right direction. It is only necessary to perform the position control for starting and stopping the adhesive application, and it is easy to control the adhesive application as well as the partial application only for a predetermined range as disclosed in Patent Document 2. There is an advantage that can be done. And since it is the structure apply | coated spirally compared with the case where an adhesive agent is apply | coated to the whole surface, it becomes a linear partial application | coating and there exists an advantage which can ensure the softness | flexibility as the disposable diaper 10 favorably.

  Further, since the spiral application portions 19 arranged adjacent to each other are overlapped with each other, the contact position between each spiral application portion 19 and the leg elastic member 16 can be increased, and the leg opening peripheral portion can be increased. There is an advantage that the adhesive strength of the leg elastic member 16 in the region B can be improved. Accordingly, it is possible to effectively prevent the leg elastic members 16 from coming off from the bonding positions due to the contracting action.

  Further, since the leg elastic member 16 disposed in the crotch region A is weakened, the leg elastic member 16 is caused by the contracting action of the leg elastic member 16 at an undesired position. There is an advantage that it is possible to effectively prevent undesired shrinkage deformation in the misalignment and the crotch region A.

  Moreover, since the hot melt adhesive applied to the leg adhesive application region P and the waist adhesive application region Q has a spiral shape, the exterior sheet 11 and the interior sheet 12 or the absorbent pad body 22 are mutually connected. The part to be bonded is intermittently bonded, the air permeability can be ensured well, and the absorbent pad body 22 is bonded by the spiral application part 19 applied to the intermediate area C. There is an advantage that the prepared positional deviation can be effectively prevented.

<Second Embodiment>
<Manufacturing method>
Next, the manufacturing method of the disposable diaper 10 which concerns on 2nd Embodiment is demonstrated, referring FIG. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  That is, as in the first embodiment, the hot melt adhesive spirals corresponding to the leg adhesive application region P and the waist adhesive application region Q on the top surface of the outer sheet 11 having an appropriate width that is gradually fed out. (Spiral application step), and on the downstream side in the conveying direction R, the leg adhesive application areas P and the waist adhesive application areas in which the spiral application parts 19 and the spiral application parts 20 are formed. The leg elastic member 16 and the waist elastic member 15 are supplied in a stretched state at predetermined positions of Q, respectively, and attached in a sticking manner (elastic member bonding step).

  Thereafter, the interior sheet 12 having the same width as the exterior sheet 11 is sequentially supplied in a polymerized form, and each spiral application unit 19 applied to the leg adhesive application region P and the waist adhesive application region Q The spiral application unit 20 is put into a sticking state (sheet polymerization step).

  And the weakening process part 29 of the downstream is performed the weakening process of the elastic member 16 for legs arrange | positioned in the crotch corresponding | compatible area | region A (weakening process process). As the weakening treatment method, for example, a roll body in which cutter blades are dispersedly arranged on the outer peripheral surface can be rolled in a pressurized state when the crotch corresponding region A passes.

  Further, at a predetermined position on the downstream side, the absorbent pad body 22 is supplied in a predetermined posture corresponding to the intermediate region C between both leg opening peripheral region B (absorbing pad body supplying step). At this time, the absorbent pad body 22 is attached to a portion corresponding to the supply position of the interior sheet 12 with a hot melt adhesive or the like applied in a spiral shape or the like. In this case, the absorbent pad body 22 has, for example, a structure in which an absorbent body is sandwiched between a top sheet and a back sheet, the top sheet is made of a liquid-permeable nonwoven fabric, and the back sheet is made of a water-repellent nonwoven fabric or the like. Composed. In addition, the absorbent body is a paper sheet such as tissue paper or a covering sheet such as a liquid-permeable non-woven sheet, in which a mass of a hydrophilic polymer aggregate such as pulverized pulp fiber or cellulose fiber is mixed with a granular polymer absorber. The structure is formed into a predetermined shape. Therefore, in this embodiment, the exterior sheet 11 may be a non-woven fabric or the like that does not have water repellency.

  Next, in the punching process section 24, the position corresponding to the leg opening 14 is punched into a circle or an ellipse by a rotary die cutter or the like (punching process). Thereafter, the sheet is folded in half at the half-folding process section 25 (two-folding process), and the side seal 27 is performed by ultrasonic welding using an ultrasonic welding apparatus (not shown) in the side sealing process section 26 (side sealing process), and the cutting process. The desired disposable diaper 10 is sequentially manufactured by cutting the central portion of the side seal 27 at the portion 28 (cutting step).

  Therefore, in this embodiment, as in the first embodiment, it is possible to effectively prevent the scattering of the adhesive, and it is possible to easily control the adhesive application, and the flexibility as the disposable diaper 10 is also provided. There is an advantage that can be secured well.

  In addition, by making the spiral application portions 19 overlap each other, the adhesive strength of the leg elastic member 16 in the leg opening peripheral region B can be improved, and the leg at an undesired position can be obtained by the weakening process. There is an advantage that it is possible to effectively prevent the position elastic displacement of the leg elastic member 16 due to the contracting action of the elastic member 16 and the undesired shrinkage deformation in the crotch region A, and to ensure good air permeability.

<Third Embodiment>
<Structure>
FIG. 7 shows a third embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  That is, in the present embodiment, not only the application of the spiral-shaped application portion 19 group but also the entire adhesive application region P for the legs is adhered to the adhesive application region P for the legs in the first embodiment. It is set as the structure provided with the stripe-shaped application part 31 by which the hot melt adhesive as an example of an agent was apply | coated to the stripe shape along the left-right direction.

  At this time, the interval between the stripe component application parts 31a constituting the stripe application part 31 may be appropriately determined as necessary.

<Manufacturing method>
Next, in the manufacturing method of the disposable diaper 10 in the present embodiment, as the pre-process of the elastic member bonding process in the first embodiment, the leg adhesive application region P on the upper surface of the exterior sheet 11 that is gradually fed out is provided. Correspondingly, a step of supplying the hot melt adhesive in a stripe shape to form the stripe-shaped coating portion 31 (stripe-shaped coating step) by an adhesive coating device (not shown) having a stripe coating coater arranged at a predetermined position. ) Is further provided.

  It should be noted that either the spiral application process for forming the spiral application part 19 group or the stripe application process for forming the stripe application part 31 by the stripe component application part 31a group is performed first. Good.

  Then, after both the stripe-shaped coating step and the spiral-shaped coating step are performed, the leg elasticity is applied to a predetermined position of the leg adhesive coating region P where the spiral-shaped coating portions 19 and the stripe-shaped coating portions 31 are formed. The member 16 is supplied in an expanded state and attached in a sticky shape, and the elastic member 15 for waist is supplied in an extended state at a predetermined position of the adhesive application region Q for the waist where each group of spiral application portions 20 is formed. And attached in a sticky shape (elastic member bonding step).

  Subsequent processes are performed similarly to 1st Embodiment, and the desired disposable diaper 10 is manufactured sequentially similarly.

  Therefore, in this embodiment, not only the same effects as in the first embodiment are obtained, but also the spiral application portions 19 and the stripe-like application portions 31 are applied over the entire leg adhesive application region P. Therefore, the contact position can be increased not only by each spiral application part 19 but also by each stripe component application part 31a of the stripe application part 31 and the leg elastic member 16, and the leg in the peripheral edge region P of the leg opening can be increased. The adhesive force of the elastic member 16 can be further improved, and there is an advantage that it can be firmly fixed. Therefore, it is possible to more reliably prevent the leg elastic members 16 from coming off from the bonding positions due to the contracting action.

  In addition, compared with the pitch between the spiral application portions 19 at the time of each spiral application, it is easy to form a narrower pitch between the stripe component application portions 31a at the time of stripe application, Therefore, by forming the space between the stripe component application portions 31a narrow, there is also an advantage that the adhesion force to each leg elastic member 16 can be further improved while ensuring flexibility and air permeability.

  Furthermore, the structure which forms a stripe-shaped application part also in the waist part corresponding | compatible area | region D in which the spiral application part 20 was formed similarly to the adhesive application area | region P for legs may be sufficient.

  In addition, in each said embodiment, although the thing of the structure applied to the pants-type disposable diaper 10 is shown as a disposable absorbent article, what is called a tape-type disposable diaper which can be detachably attached, and an absorption pad body are removable. Even a disposable absorbent article such as a pants-type diaper cover that is freely mounted can be applied in the same manner, and is not limited to the above embodiments.

  Moreover, although the structure provided with the spiral-shaped application part 19 and the stripe-shaped application part 31 in the exterior sheet 11 side is shown, it is good also as a structure provided with the spiral-shaped application part 19 and the stripe-shaped application part 31 in the interior sheet 12 side. Furthermore, it is good also as a structure which equips both the exterior sheet | seat 11 and the interior sheet | seat 12 with the spiral application part 19 and the stripe-shaped application part 31. FIG.

  Furthermore, although the structure which adhere | attached the left and right both sides of the disposable diaper 10 with the side seal 27 by ultrasonic welding etc. is shown, the structure fixed by adhesion | attachment by adhesive agent application | coating may be sufficient.

1 is a perspective view of a disposable diaper according to a first embodiment of the present invention. It is an expanded view of the exterior sheet in the disposable diaper. It is explanatory drawing of a spiral-shaped application part. It is a schematic explanatory drawing which shows a part of manufacturing process. It is a schematic explanatory drawing which shows a part of manufacturing process. It is a schematic explanatory drawing which shows a part of manufacturing process which concerns on 2nd Embodiment. It is an expanded view of the exterior sheet | seat in the disposable diaper which concerns on 3rd Embodiment. It is a disassembled perspective view which shows the expansion | deployment state of the conventional disposable diaper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disposable diaper, 11 Exterior sheet, 12 Interior sheet, 13 Waist opening, 14 Leg opening, 15 Waist elastic member, 16 Leg elastic member, 17 Leg notch, 19 Spiral application part, 20 Spiral Stripe-shaped application part 31, striped application part 31.

Claims (7)

An exterior sheet and an interior sheet that are arranged in a superposed state with each other, and a leg elastic member that is mounted along the leg opening peripheral area provided respectively on the left and right sides of the crotch corresponding area between the two sheets. In the disposable absorbent article in which the leg elastic member is bonded in an extended state,
The adhesive application area for adhering the leg elastic member is the left and right leg opening peripheral area and the intermediate area sandwiched between the left and right leg opening peripheral area, and this adhesive region. A disposable absorbent article comprising a plurality of rows of spirally coated portions in which an adhesive is spirally applied along the left-right direction over the entire agent application region. The disposable absorbent article according to claim 1,
A disposable absorbent article, wherein the spirally-applied portions disposed adjacent to each other are overlapped with each other. The disposable absorbent article according to claim 1 or 2,
A disposable absorbent article, further comprising a stripe-like application portion in which an adhesive is applied in a stripe shape along the left-right direction over the entire adhesive application region. The disposable absorbent article according to any one of claims 1 to 3,
The leg elastic member is disposed from one leg opening peripheral region to the other leg opening peripheral region through the crotch corresponding region, and the leg elastic member is cut in the crotch corresponding region. Disposable absorbent article characterized by being weakened by An exterior sheet and an interior sheet that are arranged in a superposed state with each other, and a leg elastic member that is mounted along the leg opening peripheral area provided respectively on the left and right sides of the crotch corresponding area between the two sheets. In the method for producing a disposable absorbent article, wherein the elastic member for legs is bonded in an extended state,
The left and right leg opening peripheral edge regions and the right and left leg opening peripheral edge region in the left and right leg opening peripheral edge regions of the at least one of the outer covering sheet and the inner covering sheet are left and right. A spiral coating process in which a plurality of rows of spirally coated portions are formed in a spiral shape along the direction;
An elastic member bonding step of attaching the leg elastic member in an extended state to the leg opening peripheral region where the spiral application portion is formed;
A sheet polymerization step of polymerizing the other interior sheet or exterior sheet on the exterior sheet or interior sheet to which the leg elastic member is attached;
A method for producing a disposable absorbent article, comprising: In the manufacturing method of the disposable absorbent article according to claim 5,
A manufacturing method of a disposable absorbent article, wherein in the spiral application step, the spiral application parts arranged adjacent to each other are overlapped with each other. In the manufacturing method of the disposable absorbent article according to claim 5 or 6,
As a pre-process of the elastic member adhering step, an intermediate portion sandwiched between the left and right leg opening peripheral region and the left and right leg opening peripheral region in at least one of the exterior sheet and the interior sheet A method for producing a disposable absorbent article, further comprising a stripe-shaped coating step in which a stripe-shaped coated portion is formed by coating an adhesive in a striped shape along the left-right direction over the entire horizontal direction.

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