JP2009243003A - Method for producing network structural composite, and method for producing wearing article including network structural composite - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a network structural composite by which production time and production cost can be reduced, and to provide a method for producing a wearing article including the network structural composite. <P>SOLUTION: The method for producing the network structural composite includes a step of laminating a plurality of sheet pieces, forming joined parts in laminated surfaces, and forming a network structural member 3, a step of joining one sheet piece 38a and the other sheet piece 38b positioned at both ends in the laminating direction of the network structural member 3 to one lateral edge and the other lateral edge of a covering sheet 4 as a holding sheet member, respectively, and a step of opening the sheet so as to separate one lateral edge of the covering sheet 4 from the other lateral edge thereof, and forming passages 29. Thereby, the network structural member 3 can be laminated to the covering sheet 4 simultaneously with the formation of the passages 29 to form the network structural composite 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for producing a mesh structure composite, and more particularly, a mesh structure composite used for a wear article such as a disposable diaper, a defecation training pant, an incontinence brief, and a wear article including the mesh structure composite. Regarding the method.

Conventionally, as a disposable diaper having a mesh-like panel, for example, JP 2001-276121 A (Patent Document 1) is known. According to Patent Document 1, in a diaper having a liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between the front and back sheets, a mesh shape is formed on the body side of the top sheet. A sheet-like panel is attached. The panel includes a barrier portion that forms a mesh and an opening that penetrates the panel formed between the barrier portions, and excreted feces and the like are collected at the opening. Since the stool can be collected at the opening, the stool does not remain on the wearer side of the panel, and the stool can be prevented from coming into contact with the wearer.
JP 2001-276121 A

In the conventional diaper as described above, an opening is formed in the panel and then attached to the top sheet. That is, since the process of forming the panel and the process of attaching the panel to the top sheet are separate, the number of manufacturing processes increases correspondingly, and there is a concern about an increase in manufacturing time and an increase in manufacturing cost.
If it is going to suppress the irritation | stimulation at the time of a panel contacting a wearer's skin, it is possible to enlarge the bulkiness of a barrier part. However, when attaching a bulky panel to the top sheet, there is a concern that the barrier portion will collapse.

  This invention makes it a subject to the manufacturing method of the network structure composite which can reduce manufacturing time and manufacturing cost, and the manufacturing method of the wearing article containing this network structure composite.

  The present invention provides a mesh structure member including a plurality of passages having one surface and the other surface facing each other and penetrating from the one surface to the other surface, and a partition wall forming the passage, and the mesh And a holding sheet member laminated on any one of the surfaces of the structural member, and relates to an improvement in a method for producing a network structure composite having a vertical direction and a horizontal direction.

  The present invention provides the method for manufacturing a mesh structure composite, wherein the mesh structure member includes a plurality of sheet pieces that form the partition walls and extend in the longitudinal direction, and the sheet pieces are joined to each other and spaced apart in the longitudinal direction. A plurality of existing joints. Laminating the plurality of sheet pieces, forming the joining portion on a lamination surface, and forming the joining portion by shifting in the vertical direction at a position that does not overlap with the joining portions adjacent to each other in the lamination direction; Joining one side edge and the other side edge of the holding sheet member to the one sheet piece and the other sheet piece located at both ends, respectively, and the one side edge of the holding sheet member And the step of forming the passage so as to be spaced apart from the other side edge, and the mesh structure member and the holding sheet member are laminated simultaneously with the formation of the passage.

  As one of preferred embodiments, the holding sheet member includes a pair of both side sheet portions that are separated in the lateral direction and extend in the longitudinal direction, and one of the sheet portions is attached to one sheet piece of the mesh structure member. The other sheet part is joined to the other sheet piece of the mesh structure member.

  As one of preferred embodiments, the holding sheet member includes both end sheet portions that connect the both side sheet portions to each other, and further includes a step of folding the holding sheet member so that the both side sheet portions overlap each other, The folded inner surface side of the sheet part is joined to the sheet piece of the mesh structure member.

  The present invention is a method of manufacturing a wearing article including the network structure composite, wherein the inner sheet located on the body side, the outer sheet located on the clothing side, and the liquid absorbing structure located between the inner and outer sheets And the step of joining the mesh structure composite to the body side of the chassis.

  As one preferred embodiment, the network structure composite has the network structure member positioned on the chassis side.

  As another preferred embodiment, the method further includes a step of joining a liquid absorbing sheet between the chassis and the network structure composite.

  As another preferred embodiment, the method further includes a step of joining a pair of leakage barrier cuffs extending in the longitudinal direction and spaced apart in the lateral direction to the body side of the mesh structure member.

Since it includes the step of forming the network structure member passage so that one side edge and the other side edge of the holding sheet member are spaced apart from each other, the network structure member passage is formed at the same time. The holding sheet member can be joined to the mesh structure member. Therefore, the number of steps can be reduced and the manufacturing cost can be reduced as compared with the case where the mesh structure member is joined to the sheet after the passage is formed separately. Moreover, since the mesh structure member is conveyed in a state where the sheet pieces are laminated, the shape of the product can be maintained constant as compared with the case where the mesh structure member having the passages is conveyed. That is, when the mesh structure member is transported after the passage is formed, the passage may be deformed during transportation and it may be difficult to maintain the shape, but this may be suppressed. The mesh structure member can be stably conveyed.
While the laminated sheet pieces are opened to form a mesh structure member passage, it can be laminated on the holding sheet member. Therefore, when the mesh structure member is laminated on the holding sheet, the partition wall of the mesh structure member is crushed. There is no end. Therefore, even if the bulkiness of the mesh structure member is increased, the irritation to the wearer's skin can be reduced without collapsing the mesh.

  The holding sheet member includes a pair of laterally spaced sheet parts, one sheet part is joined to one sheet piece of the mesh structure member, and the other sheet part is joined to the other sheet piece of the mesh structure member. Therefore, an opening is formed between the sheet portions on both sides, and the passage of the mesh structure member is exposed through the opening. Therefore, even when the holding sheet member is located on the wearer side, the mesh structure member can be located on the wearer side. Moreover, the area of the channel | path of a mesh structure member can be easily adjusted with the separation distance of a sheet | seat part on both sides.

  The holding sheet member further includes a step of folding the both side sheet portions on top of each other, and the folded inner surface side of the both side sheet portions is joined to the sheet piece of the mesh structure member, so that the folded holding sheet member is expanded. Only by this, the passage of the mesh structure member can be formed. Since the distance between both side sheet parts is regulated by the both end sheet parts, the path of the mesh structure member can be formed stably without the distance between the both end sheet parts changing.

  Since the step of joining the network structure composite to the body side of the chassis including the liquid absorbing structure located between the inner and outer surface sheets is included, the network structure composite can be formed on the wearing article. It is possible to collect excrement and the like with the network structure complex, and to absorb moisture such as excrement with the liquid absorption structure. Since the flow of excrement can be suppressed by the mesh structure member and moisture can be promptly guided to the liquid absorption structure, skin troubles caused by adhering excrement etc. to the skin of the wearer can be suppressed.

  Since the mesh structure composite has the mesh structure member positioned on the chassis side and the holding sheet member positioned on the wearer side, both lateral edges of the mesh structure member are pressed by the holding sheet member, and the mesh structure It is possible to suppress the occurrence of skin troubles due to both side edges of the member.

  Since the step of joining the liquid-absorbing sheet is further included between the chassis and the mesh structure composite, moisture contained in excreta and the like collected by the mesh structure member is quickly absorbed. For example, when a network structure complex is used for a diaper, the moisture of the excreted loose stool is quickly absorbed and separated from the solid content, so that the loose stool adheres to the skin of the wearer and skin trouble occurs. Can be suppressed.

  Since a pair of leak barrier cuffs extending in the vertical direction and spaced apart in the horizontal direction are joined to the body side of the mesh structure member, it is possible to suppress body fluid from leaking in the horizontal direction. Since the fluidity of the body fluid is reduced by the mesh structure member, leakage in the lateral direction is further suppressed.

An example of the present invention will be described for the case where the network structure composite is applied to a worn article.
<First Embodiment>

FIG. 1 is a plan view of the diaper 1 and a part thereof is broken for explanation. As illustrated, the diaper 1 is a so-called open type, and includes a liquid-absorbing chassis 2, a mesh structure member 3, a covering sheet 4 that covers the mesh structure member 3, and a leak barrier cuff 5. The “network structure” refers to a structure that includes the form of the network structure member 3 when viewed from the top, and can be rephrased as a honeycomb structure.
As shown in FIG. 2, the diaper 1 has a mesh structure member 3 laminated on the body side of the chassis 2 via a liquid absorbing sheet 8, and a covering sheet 4 is laminated on the body side of the mesh structure member 3. Leakage barrier cuffs 5 are laminated on both sides of the body.

  FIG. 3 is a diagram showing details of the chassis 2, and a part thereof is broken for explanation. The chassis 2 includes an inner sheet 6 that forms a body-side inner surface and an outer sheet 7 that forms a clothing-side outer surface. The chassis 2 includes front and rear waist regions 9 and 10 and a crotch region 11 located between the front and rear waist regions 9 and 10, and a direction in which the front waist region 9, the crotch region 11, and the rear waist region 10 are continuous is defined as a longitudinal direction Y. The direction orthogonal to the vertical direction Y is defined as the horizontal direction X. The chassis 2 includes front and rear end edges 12 and 13 extending in the horizontal direction X facing the vertical direction Y, and both side edges 14 facing the horizontal direction X and extending in the vertical direction Y. Both side edges 14 have front and rear side edges 15 and 16 located in the front and rear waist areas 9 and 10, and leg side edges 17 located in the crotch area 11. The chassis 2 is curved toward the longitudinal center line PP that bisects the dimension in the lateral direction X at the leg side edge 17 to form an hourglass shape as a whole.

  Front and rear waist elastic members 18 and 19 extending in the lateral direction X are attached to the chassis 2 at the front and rear end edges 12 and 13. The front and rear waist elastic members 18, 19 are interposed between the inner and outer surface sheets 6, 7, and are attached by an adhesive (not shown) in an extended state in the lateral direction X. A plurality of leg elastic members 20 extending along the leg side edges 17 are attached to the crotch region 11. The leg elastic member 20 is interposed between the inner and outer surface sheets 6 and 7 and attached by an adhesive (not shown) in an expanded state.

A liquid absorbing structure 21 is interposed between the inner and outer surface sheets 6 and 7. The liquid-absorbing structure 21 includes a liquid-absorbent core material 22 having a mixture of fluff pulp and superabsorbent polymer particles, and a diffusion sheet 23 such as tissue paper that wraps the core material 22. A liquid-impermeable leak barrier sheet 24 is interposed between the liquid absorbing structure 21 and the outer sheet 7 to suppress leakage of excrement such as urine from the liquid absorbing structure 21 to the outside of the diaper 1. Yes.
A tape fastener 25 is formed on the rear edge 16 of the chassis 2, and the tape fastener 25 is detachably engaged with the outer surface sheet 7 of the front waist region 9 so that the diaper 1 forms a three-dimensional shape. ing. Thus, when the diaper 1 becomes a three-dimensional shape, a waist opening is formed by the front and rear end edges 12 and 13, and a leg opening is formed by the leg side edge 17.

  As shown in FIG. 2, the mesh structure member 3 includes both side edges 33 facing the lateral direction X and extending in the longitudinal direction Y, and both end edges 34 facing the longitudinal direction Y and extending in the lateral direction X. The mesh structure member 3 is disposed from the crotch region 11 to the rear waist region 10. The mesh structure member 3 forms a mesh structure by joining a plurality of partition walls 26 with joint portions 27, and is located between the partition walls 26 on the clothing side from one surface located on the body side of the mesh structure member 3. A plurality of passages 28 that open to the other surface and penetrate in the thickness direction are formed.

  The mesh structure member 3 is joined to the chassis 2 via the liquid absorbing sheet 8. The liquid absorbing sheet 8 is located from the crotch region 11 to the rear waist region 10 of the chassis 2 and is bonded to the inner surface sheet 6 by adhesion or welding. As the liquid absorbent sheet 8, the liquid absorbent capacity is improved by using a dry nonwoven fabric in which thermoplastic fiber webs are laminated. However, a general liquid-permeable sheet can be used without being limited to this nonwoven fabric.

  The covering sheet 4 is formed from a liquid-permeable nonwoven fabric or the like, and is laminated on the body side of the network structure member 3. The covering sheet 4 has a length dimension in the longitudinal direction Y substantially equal to the length dimension in the longitudinal direction Y of the chassis 2, and the length dimension in the transverse direction X is the length in the transverse direction X of the mesh structure member 3. It is designed to be larger than the size. An opening 29 is formed in the covering sheet 4.

  Both side sheet portions 30 extending in the vertical direction Y are formed on both sides in the horizontal direction X of the opening 29, and both end sheet portions 31 extending in the horizontal direction X are formed on both ends in the vertical direction Y. In other words, the both side sheet portions 30 and the both end sheet portions 31 are formed of a single sheet, and the opening portions 29 are formed by the sheet portions 30 and 31. The opening 29 is arranged from the crotch region 11 to the rear waist region 10, and the covering sheet 4 is laminated on the mesh structure member 30 so that the mesh structure member 30 is exposed from the opening 29. Both side edges 33 of the mesh structure member 3 are covered by the both side sheet portions 30, and both end edges 34 are covered by the both end sheet portions 31.

  The leak barrier cuff 5 is a liquid-impervious nonwoven fabric or the like, and is formed from a pair of sheets extending in the longitudinal direction Y. The leakage barrier cuff 5 is spaced apart from the longitudinal center line PP, and the length dimension in the longitudinal direction Y is substantially equal to the length dimension of the chassis 2. The leak barrier cuff 5 joins the base side edge 5a to the chassis 2 and does not join the free side edge 5b. A cuff elastic member 32 extending in the longitudinal direction Y along this edge is attached to the free side edge 5b in an extended state. The leakage barrier cuff 5 is separated by the contraction force of the cuff elastic member 32 so that the portion including the free side edge 5b stands up from the chassis 2 with the base side edge 5a as a fulcrum, thereby forming a leakage leak, etc. Suppressed.

4 is an end view taken along line VV in FIG. 1, and FIG. 5 is an end view taken along line VI-VI in FIG. As illustrated, the chassis 2, the liquid absorbing structure 21, the liquid absorbing sheet 8, the mesh structure member 3, the covering sheet 4, and the leak barrier cuff 5 are laminated in this order toward the body side. In the mesh structure member 3, the partition wall 26 is bonded or welded to the liquid absorbent sheet 8, and the body side and the liquid absorbent sheet 8 communicate with each other through the passage 28.
The covering sheet 4 is joined so as to cover the side edges 33 of the mesh structure member 3 by the both side sheet portions 30 and press the side edges 33 against the clothing side. The both end sheet portions 31 of the covering sheet 4 are joined so as to cover the side edges 34 of the mesh structure member 3 and press the end edges 34 against the clothing side.

  Since the mesh structure member 3 is pressed by the covering sheet 4, both side edges 33 of the mesh structure member 3 are crushed by the covering sheet 4, and the dimension in the thickness direction is shortened. By reducing the thickness of the side edges 33 in this way, the distance between the free side edge 5b of the leak barrier cuff 5 that is spaced so as to stand up and the partition wall 26 of the mesh structure member 3 can be increased. By increasing the separation distance from the free side edge 5 b to the partition wall 26, it is possible to suppress excrement collected by the mesh structure member 3 from leaking outside the diaper 1 beyond the leakage barrier cuff 5. The both end edges 34 of the mesh structure member 3 are crushed by the covering sheet 4, thereby reducing the dimension in the thickness direction and reducing the steps from the mesh structure member 3 to the liquid absorbent sheet 8 and the liquid absorbent structure 21. Can do. If the level difference is large, the skin irritation is increased, which may cause a skin trouble. However, the skin trouble can be suppressed by reducing the level difference.

  When wearing the diaper 1 as described above, the tape fastener 25 is detachably engaged with the outer surface sheet 9 of the front waist region 9 so that the opening 29 of the covering sheet 4 is located in the anus of the wearer. Let Therefore, the excreted stool can be guided to the passage 28 of the mesh structure member 3 through the opening 29. Since the passage 28 is isolated by the partition wall 26, feces can be accommodated in the passage 28. Therefore, the fluidity of excreted feces can be reduced, and the feces can be prevented from adhering to the skin in a wide range. Further, the stool contacts the liquid absorbent sheet 8 through the passage 28. Since the liquid absorbent sheet 8 has a high water absorption, the water in the stored stool can be quickly moved to the liquid absorbent structure 21 side. Therefore, even when loose stool with a lot of moisture is excreted, the moisture can be quickly absorbed by the liquid absorbing structure 21, and the backflow of loose stool to the skin can be suppressed.

  The network structure member 3 is bonded to the liquid absorbent sheet 8 by adhesion or welding. When the liquid absorbent sheet 8 is not attached, the network structure member 3 is directly bonded to the inner surface sheet 6 of the chassis 2. May be.

  The manufacturing method of the diaper of this 1st Embodiment is demonstrated based on FIGS. The diaper is manufactured in a series of manufacturing processes, and the mesh structure member 3 is conveyed to the manufacturing process in a state where the sheet piece is folded. As shown in FIG. 6, the mesh structure member 3 is formed by a plurality of partition walls 26, but the partition walls 26 are formed by tape-like sheet pieces 38 extending in the longitudinal direction Y. As shown in FIG. 6A, the sheet pieces 38 are laminated in the horizontal direction X with their surfaces facing each other, and form joints 27 arranged at regular intervals in the vertical direction Y. The joining portions 27 are shifted so as not to be adjacent in the lateral direction X, that is, formed so that adjacent joining portions in the stacking direction do not overlap with each other, and a staggered pattern is formed by the joining portions 27 and the non-joining portions. . The sheet piece 38 includes one sheet piece 38a and the other sheet piece 38b located at both ends in the stacking direction.

  From the state of FIG. 6A, the mesh structure member 3 is unfolded by pulling the one sheet piece 38a and the other sheet piece 38b away from each other, that is, outside in the lateral direction X as indicated by an arrow A. As a result, a passage 28 as shown in FIG. 6B is formed. In the mesh structure member 3, the sheet piece 38 becomes the partition wall 26, and a passage 28 is formed between the partition walls 26. Such a network structure 3 is conveyed to a manufacturing process in the laminated state of FIG.

FIG. 7 is an explanatory view showing a manufacturing process for joining the liquid absorbent sheet 8 to the mesh structure composite 40. The mesh structure composite 40 includes a mesh structure member 3 and a holding sheet member. In this embodiment, the holding sheet member is constituted by the covering sheet 4.
In FIG. 7, an arrow B indicates the web conveyance direction, and in * 1, it indicates that the manufacturing process is continuous. As illustrated, the covering sheet 4 is conveyed in the state of the web before cutting. On the cover sheet 4, two adhesives 41a, 42a and 41b, 42b extending in the transport direction are formed symmetrically with respect to the transport direction center line RR. The imaginary line 43 shown in the covering sheet 4 shows a cutting line when used for one diaper, and the adhesives 41a, 41b, 42a, 42b are rearward in the transport direction from the center between the imaginary lines 43. Is located.

  When the adhesives 41 a, 41 b, 42 a and 42 b are applied, the network structure member 3 in a laminated state is supplied to the cover sheet 4 by the roller 44. A cutter 45 is attached to the roller 44, and the mesh structure member 3 is cut to a length substantially the same as the length of the adhesive 41a. The cut mesh structure member 3 is conveyed so that one sheet piece 38a overlaps the adhesive 41a located on the center line RR side, and is joined to the covering sheet 4 by the adhesive 41a.

  When the mesh structure member 3 is joined, the web-like liquid absorbent sheet 8 is supplied to the covering sheet 4 by the roller 46. As shown in FIG. 8, the liquid absorbent sheet 8 is folded in advance along a fold line 47 parallel to the center line RR. The liquid absorbent sheet 8 includes both side edges 8a and 8b extending in parallel to the fold line 47, and the both side edges 8a and 8b are folded outward via folding lines 48 and 49. A cutter 50 is attached to the roller 46, and the web-like liquid-absorbing sheet 8 is cut into a length substantially the same as the length of the adhesive 42a. The cut liquid-absorbing sheet 8 is conveyed so that the side edge 8a overlaps the adhesive 42a, and is joined to the covering sheet 4.

  When the mesh structure member 3 and the liquid absorbing sheet 8 are joined to the covering sheet 4, the covering sheet 4 is folded along the center line RR. That is, the covering sheet 4 includes both side edges 4a and 4b extending in parallel to the center line RR, and the covering sheet 4 is folded so that the both side edges 4a and 4b overlap. Adhesives 41 b and 42 b are applied to the side edge 4 b side of the covering sheet 4. The adhesives 41b and 42b are symmetrical with respect to the center line RR with respect to the adhesives 41a and 42b. Therefore, the adhesives 41a and 42a and the adhesives 41b and 42b are overlapped with each other via the liquid absorbing structure member 3 and the liquid absorbing sheet 8 by being folded along the center line RR. That is, the other sheet piece 38b of the liquid-absorbing structural member 3 is joined to the covering sheet 4 via the adhesive 41b, and the side edge 8b of the liquid-absorbing sheet 8 is joined to the covering sheet 4 via the adhesive 42b.

  When the covering sheet 4 is folded, the opening 29 is formed along the center line RR. The opening 29 is formed so as to be shorter than the length of the mesh structure member 3 and the liquid absorbent sheet 8 in the conveying direction, and is formed so as to cut out the folded cover sheet 4 from the center line RR side. .

  When the opening 29 is formed in the folded cover sheet 4, the cover sheet 4 is expanded again. Since one sheet piece 38a and the other sheet piece 38b of the mesh structure member 3 are joined to the covering sheet 4, when the covering sheet 4 is expanded, the liquid absorbing structure member 3 is also expanded and shown in FIG. 6 (b). As a result, the passage 28 is formed between the sheet pieces 38, and the partition wall 26 is formed by the sheet pieces 38. Thus, the network structure composite 40 is manufactured, and the liquid absorbing sheet 8 is attached to the network structure composite 40. An adhesive (not shown) is applied between the liquid absorbent sheet 8 and the mesh structure member 3 so as to join them together.

  FIG. 9 is a diagram illustrating a process of joining the chassis structure 2 and the like with the liquid-absorbing sheet 8 attached to the chassis 2. Arrow B indicates the transport direction, and the manufacturing process is continuous at * 2. It is shown that. As shown in the figure, a liquid-absorbing structure 21, front and rear waist elastic members 18, 19 and leg elastic members 20 are joined to a web-like outer surface sheet 7 constituting the chassis 2 via an adhesive (not shown). The web-like inner surface sheet 6 is laminated on the outer surface sheet 7 by the roller 51 through the liquid absorbing structure 21 and the elastic members 18 to 20. The inner sheet 6 and the outer sheet 7 are joined to each other via an adhesive (not shown).

  When the inner and outer surface sheets 6 and 7 are joined, the mesh structure composite 40 manufactured in FIG. At this time, the liquid-absorbing sheet 8 attached to the mesh structure composite 40 is laminated so as to be positioned on the inner surface sheet 6 side, and bonded by an adhesive (not shown). Therefore, the mesh structure composite 40 is attached so that the mesh structure member 3 is exposed from the opening 29 of the covering sheet 4.

  When the mesh structure composite 40 is attached to the chassis 2, a pair of leakage barrier cuffs 5 are supplied via the rollers 58. The leak barrier cuff 5 is laminated on the inner surface sheet 6 so as to cover both side edges 4a and 4b of the covering sheet 4, and is joined by an adhesive (not shown). Only the base side edge 5a located outside is joined to the leakage barrier cuff 5, and the free side edge 5b located inside is not joined.

  When the leak barrier cuff 5 is joined to the chassis 2, the tape fastener 25 is attached to the side of the rear waist elastic member 19 with an adhesive (not shown). When the tape fastener 25 is attached, leg side edges 17 that are curved toward the center line RR are formed on both side edges 2a and 2b of the chassis 2 in the transport direction. That is, the leg side edge 17 is formed so that the inner and outer surface sheets 6 and 7 are notched toward the center line RR. If the leg side edge 17 is formed, it will cut | disconnect with the cutter which is not shown in figure along the virtual line 53, and the diaper 1 will be formed, respectively. Note that the chassis 2 and the mesh structure composite 40 are stacked so that the cutting virtual line 43 in FIG. 7 and the cutting virtual line 53 in FIG. 9 coincide with each other, and these are cut simultaneously.

By the manufacturing method as described above, the diaper 1 can be manufactured in a series of steps, and the manufacturing time can be shortened and the manufacturing cost can be reduced. In the manufacture of the network structure composite 40, the network structure member 3 is conveyed to the manufacturing process in a folded state, and is attached to the covering sheet 4, so that the network structure is formed. In the manufacturing process of 40, the partition wall 26 is not crushed and the passage 28 is not blocked. Since the partition wall 26 is not crushed in the manufacturing process, the partition wall 26 can be made bulky to improve the flexibility to the wearer.
Further, if the sheet is transported after the passage 28 of the mesh structure member 3 is formed, the sheet pieces 38a and 38b forming the mesh structure member 3 may be pulled more than necessary and the shape thereof may not be stabilized. However, since the mesh structure member 3 is conveyed in the laminated state of the sheet pieces 38, this can be suppressed.

Since the mesh structure is formed simply by joining the sheet pieces 38a and 38b of the mesh structure member 3 to the both side sheet portions 30 forming the opening 29 of the covering sheet 4 and developing them, this production is easy. . In addition, since the separation distance between the both-side sheet portions 30 is regulated by the both-end sheet portions 37, a constant separation distance can be maintained, and variation in the size of the passage 28 of the mesh structure member 3 between products can be suppressed. be able to. If the size of the passage 28 of the mesh structure member 3 is adjusted in accordance with the separation distance between the both side sheet portions 30, it can be applied to the covering sheet 4 having the openings 29 of various sizes. However, when 12 sheet pieces 38 are stacked and the distance in the longitudinal direction Y between the joint portions 27 is about 30 mm, the distance between the side edges 33 of the mesh structure member 3 is preferably 50 mm to 70 mm. .
Since the opening 29 can be formed by hollowing out a part of the covering sheet 4, no other special member is required. Therefore, the number of parts and the number of machining points can be reduced, the cost can be reduced, and the machining stability can be improved.

  The adhesives 41a and 41b and the adhesives 42a and 42b may be applied by either contact coating or non-contact coating. However, in order not to increase the rigidity of the sheet, it is preferable to apply the adhesive with a low basis weight. In this case, non-contact coating can be selected.

In this embodiment, the folded liquid permeable sheet 8 is joined to the covering sheet 4 that is a holding sheet member, and the liquid permeable sheet 8 is laminated on the network structure member 3 simultaneously with the formation of the passages 28 of the network structure member 3. However, the liquid-permeable sheet 8 may be separately laminated after the formation of the mesh structure member 3. When laminating the liquid-permeable sheet 8 separately, the step of folding the liquid-permeable sheet 8 can be omitted.
Although the covering sheet 4 is used as the holding sheet member, other sheets can be used as long as the sheet pieces 38 on which the mesh structure member 3 is laminated can be expanded to form the passages 28. For example, a liquid absorbing sheet or the like can be used as the holding sheet.
<Second Embodiment>

FIG. 10 shows the diaper 1 of the second embodiment. In the second embodiment, only the covering sheet is different from the first embodiment, and other members are the same as those in the first embodiment. Therefore, the description about the same member is abbreviate | omitted.
As shown in the figure, the covering sheet 35 includes a pair of both side sheet portions 36a and 36b that are spaced apart in the transverse direction X and extending in the longitudinal direction Y, and a pair of both end sheet portions 37a that are spaced apart in the longitudinal direction Y and extend in the transverse direction X. And 37b. The both side sheet portions 36a and 36b and the both end sheet portions 37a and 37b are different sheets.

  Both side sheet portions 36 a and 36 b are laminated on the body side of the mesh structure member 3. The pair of both side sheet portions 36a and 36b are positioned symmetrically with respect to the longitudinal center line PP, and are joined to the inner surface sheet 6 by adhesion or welding so as to cover the side edges 33 of the mesh structure member 3. Both end sheet portions 37a and 37b are laminated on the body side of the both side sheet portions 36a and 36b. The pair of both end sheet portions 37a and 37b are joined to the both side sheet portions 36a and 36b by adhesion or welding so as to cover the edge 34 of the mesh structure member 3. However, the portions that do not overlap the both side sheet portions 36 a and 36 b are joined to the inner surface sheet 6.

  An opening is formed by the both side sheet portions 36a and 36b and the both end sheet portions 37a and 37b, and the mesh structure member 3 is exposed from the opening. By covering both side edges 33 and both end edges 34 of the mesh structure member 3 with both side sheet portions 36a and 36b and both end sheet portions 37a and 37b, the mesh structure member 3 is pressed against the liquid absorbent sheet 8 to suppress lifting. In addition, leakage of urine and the like can be suppressed. This is the same as in the first embodiment.

  The manufacturing method of the diaper of this 2nd Embodiment is demonstrated based on FIGS. Description of the method similar to the method of manufacturing the diaper of the first embodiment is omitted. FIG. 11 shows the manufacturing process of the network structure composite 54 and the process of attaching the liquid absorbing sheet 8 to the network structure composite 54. The conveying direction is indicated by an arrow B, and the manufacturing process is continuous at * 3. It shows that you are doing. In this embodiment, the holding sheet members are the both side sheet portions 36 a and 36 b constituting the covering sheet 35. As illustrated, two webs of adhesives 41a and 42a extending in the transport direction are applied to one web-shaped side sheet portion 36a and transported.

  The network structure member 3 conveyed from the roller 44 is laminated on the adhesive 41a and joined to the one side sheet portion 36a. The mesh structure member 3 is as described in the first embodiment, and is supplied in a state where a plurality of sheet pieces 38 are laminated, and one sheet piece 38a is joined to the side sheet portion 36a. The mesh structure member 3 is supplied by being cut by a cutter 45 so as to have almost the same length as the adhesive 41a.

  When the mesh structure member 3 is joined to the side sheet portion 36a, the liquid absorbing sheet 8 is supplied to the side sheet portion 36a by the roller 46. As described in the first embodiment, the side edges 8a and 8b of the liquid absorbent sheet 8 are bent through folding lines 48 and 49, respectively. The liquid absorbent sheet 8 is joined to the side sheet portion 36a so that the bent side edge 8a overlaps the adhesive 42a. The liquid absorbent sheet 8 is supplied after being cut by the cutter 50 so as to have almost the same length as the adhesive 42a.

  When the mesh structure member 3 and the liquid absorbent sheet 8 are joined to the one side sheet portion 36 a, the other side sheet portion 36 b is conveyed via the roller 55. Adhesives 41b and 42b are applied to the other side sheet portion 36b. The other side sheet part 36b is laminated on one side sheet part 36a so that the adhesives 41b and 42b overlap the adhesives 41a and 41b. Therefore, the adhesive 41 b of the other side sheet portion 36 b is joined to the other sheet 38 b of the mesh structure member 3, and the adhesive 42 b is joined to the side edge 8 b of the liquid absorbent sheet 8.

  When the mesh structure member 3 and the liquid absorbent sheet 8 are joined by the both side sheet portions 36a and 36b, the one side sheet portion 36a is developed in a direction in which it is separated from the other side sheet 36b. That is, the one side sheet portion 36a is moved to the opposite side across the center line RR. Thus, by separating the both side sheet portions 36a and 36b, the network structure member 3 is laminated between the liquid absorbent sheet 8 and the both side sheet portions 36a and 36b.

  FIG. 12 is an explanatory view three-dimensionally showing a state in which the mesh structure member 3 and the liquid absorbent sheet 8 are joined between the both side sheet portions 36a and 36b. As shown in FIG. 12A, the mesh structure member 3 and the liquid absorbing sheet 8 are assembled between the both side sheet portions 36a and 36b, and one side sheet portion 36a is pulled in the direction of the arrow in FIG. . By separating the both side sheet portions 36a and 36b in this way, the mesh structure member 3 is laminated on the body side of the liquid absorbing sheet 8, and the both side sheet portions 36a and 36b are further laminated on the body side. 11 is formed.

  FIG. 13 shows a process of joining the mesh structure composite 54 and the like to the chassis 2, and an arrow B indicates the conveyance direction and indicates that the manufacturing process is continuous at * 4. The steps of joining the front and rear waist elastic members 18, 19, the leg elastic member 20 and the liquid absorbing structure 21 to the back sheet 7 and laminating the inner sheet 6 via the roller 51 are the same as in the first embodiment. The mesh structure composite 54 manufactured in FIG. 11 is supplied to the inner surface sheet 6 via a roller 52, and is bonded to the inner surface sheet 6 via an adhesive (not shown). At this time, the mesh structure composite 54 is supplied so that the liquid absorbing sheet 8 faces the inner surface sheet 6.

  When the mesh structure 54 is joined to the inner surface sheet 6, the web-shaped sheet 37 constituting the both end sheet portions 37 a and 37 b is conveyed to the chassis 2 via the roller 56. The sheet 37 is cut through the cutter 57 and supplied so as to overlap the both side sheet portions 36a and 36b. The cut sheet 37 overlaps both end edges 34 of the mesh structure member 3 and is laminated so that the mesh structure member 3 is exposed from between the sheets 37 and 37, and is formed on both side sheet portions 36a and 36b and the inner surface sheet 6. It joins via the adhesive agent which is not shown in figure.

  When the sheet 37 is joined, a pair of leakage barrier cuffs 5 are supplied via the rollers 58. The leak barrier cuff 5 is laminated on both side sheet portions 36a and 36b so as to cover both side edges 37c of the sheet 37, and is joined by an adhesive (not shown). Only the base side edge 5a located outside is joined to the leakage barrier cuff 5, and the free side edge 5b located inside is not joined.

  When the leak barrier cuff 5 is joined, the tape fastener 25 is attached to the side of the rear waist elastic member 19, and the leg side edges 17 curved toward the center line RR are formed on both side edges 2a and 2b of the chassis 2 in the transport direction. To do. If the leg side edge 17 is formed, it will cut | disconnect with the cutter which is not shown in figure along the virtual line 53, and the diaper 1 will be formed, respectively. By cutting along the virtual line 53 in this way, the sheet 37 is also cut, and one end sheet portion 37a and the other end sheet portion 37b are formed.

  By the manufacturing method as described above, the diaper 1 can be manufactured by a series of fixations, and the manufacturing time can be shortened and the manufacturing cost can be reduced. In the production of the mesh structure composite 54, the both side sheet portions 36a and 36b are used as the holding sheet member, so that the separation distance between the both side sheet portions 36a and 36b can be changed. By changing these separation distances, the separation distance of the mesh structure member 3 can also be changed, and the size of the passage 28 can be changed. Since the size of the mesh structure member 3 can be changed, the same mesh structure member 3 can be used regardless of the size of the diaper 1, and the cost can be reduced.

The order of stacking the mesh structure member 3 and the liquid absorbent sheet 8 can be changed depending on the developing direction of the both side sheet portions 36a and 36b. That is, in FIG. 11, if the other side sheet 36b located above is opened across the opposite side of the center line RR from the state in which the both side sheet portions 36a and 36b are overlapped, the both side sheets 36a. , 36b, the liquid absorbing sheet 8, and the mesh structure member 3 are laminated in this order. Since the order of stacking can be changed simply by changing the opening direction in this way, changes according to various variations can be easily performed.
Although both side sheet portions 36a and 36b are used as the holding sheet members, the sheet structure is not limited to this as long as the mesh structure of the mesh structure member 3 can be formed, and other sheets can be used.

The top view of the diaper of 1st Embodiment. An exploded view of the diaper. Explanatory drawing of a chassis. The VV line end view of FIG. FIG. 2 is an end view taken along a vertical center line in FIG. 1. (A) The figure before expansion | deployment of a mesh structure member. (B) The figure after expansion | deployment of a mesh structure member. Explanatory drawing of manufacturing processes, such as network structure composite_body | complex. Explanatory drawing of a liquid absorption sheet. Explanatory drawing of the manufacturing process of a diaper. The top view of the diaper of 2nd Embodiment. Explanatory drawing of manufacturing processes, such as network structure composite_body | complex. (A) An exploded view of a network structure composite or the like. (B) Explanatory drawing of a network structure composite etc. Explanatory drawing of the manufacturing process of a diaper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Diaper 2 Chassis 3 Mesh structure member 4 Cover sheet (holding sheet member)
5 Leakage Barrier Cuff 8 Liquid Absorbing Sheet 21 Liquid Absorbing Structure 26 Bulkhead 27 Joint 28 Passage 35 Covering Sheet 36a Both Side Sheets (Holding Sheet Member)
36b Both sides sheet part (holding sheet member)
38 Sheet piece 40 Network structure composite 54 Network structure composite

Claims (7)

A mesh structure member including a plurality of passages having one surface and the other surface facing each other and penetrating from the one surface to the other surface; and a partition wall forming the passage; and the mesh structure member A holding sheet member laminated on any surface, and a method for producing a network structure composite having a longitudinal direction and a transverse direction,
The mesh structure member includes a plurality of sheet pieces that form the partition and extend in the longitudinal direction, and a plurality of joint portions that join the sheet pieces to each other and are spaced apart in the longitudinal direction,
Laminating the plurality of sheet pieces, forming the joining portion on a lamination surface, and forming the joining portion shifted in the longitudinal direction at a position that does not overlap with the joining portions adjacent to each other in the lamination direction;
Bonding one side edge and the other side edge of the holding sheet member to the one sheet piece and the other sheet piece located at both ends in the stacking direction;
Forming the passage by opening the one side edge of the holding sheet member and the other side edge to be separated from each other, and
The method for producing the mesh structure composite, wherein the mesh structure member and the holding sheet member are laminated simultaneously with the formation of the passage.   The holding sheet member includes a pair of both side sheet portions that are separated in the lateral direction and extend in the longitudinal direction, one of the sheet portions is joined to one of the sheet pieces of the mesh structure member, and the other sheet The manufacturing method of the network structure composite_body | complex of Claim 1 which joins a part to the said other sheet piece of the said network structure member. The holding sheet member includes both end sheet portions that connect the both side sheet portions to each other, and further includes a step of folding the holding sheet member by overlapping the both side sheet portions with each other,
The manufacturing method of the network structure composite_body | complex of Claim 1 or 2 which joins the folded inner surface side of the said both-sides sheet | seat part to the sheet piece of the said network structure member. A method for producing a worn article comprising the network structure composite,
Including the step of joining the mesh structure composite to the body side of the chassis including an inner sheet positioned on the body side and an outer sheet positioned on the clothing side, and a liquid absorbing structure positioned between the inner and outer sheet. The manufacturing method of the said wearing article characterized by these.   The said mesh structure complex is a manufacturing method of the wearing article of Claim 4 which positions the said network structure member in the chassis side, and positions a holding | maintenance sheet | seat member in the body side.   The manufacturing method of the wearing article of Claim 4 or 5 which further includes the process of joining a liquid absorption sheet between the said chassis and the said network structure composite_body | complex.   The manufacturing method of the wearing article in any one of Claims 4-6 further including the process of joining a pair of leak barrier cuff extended in the said vertical direction and spaced apart in the said horizontal direction to the body side of the said mesh structure member.

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