JP5750559B1 - Absorbent articles - Google Patents

Abstract

Between the 1st sheet | seat (21) and the 2nd sheet | seat (22), the some threadlike elastic member (27) distribute | arranged along the horizontal direction is extended in the horizontal direction, and is being fixed along with the vertical direction. In the covering member (20a, 20b) of the absorbent article, when the plurality of thread-like elastic members (27) are cut at one place in the lateral direction, the first sheet (21) and the second sheet are cut at the cut positions. By crimping | bonding with a sheet | seat (22), several linear crimping | compression-bonding parts (j) are formed shifting the position of the mutual vertical direction. The at least one linear crimping portion (j2) of the plurality of linear crimping portions (j) is a portion (j2L) that overlaps at least one other linear crimping portion (j1) in the lateral direction. A non-overlapping portion (j2N), and the other linear crimping portion (j1) overlaps the one linear crimping portion (j2) in the lateral direction (j1L). And a portion (j1N) that does not overlap in the lateral direction.

Description

  The present invention relates to an absorbent article such as a disposable diaper.

  As shown in the schematic plan view of FIG. 1, a disposable diaper 1 ′ known as an absorbent article that absorbs excreted fluid such as urine has a vertical direction, a horizontal direction, and a thickness direction that are orthogonal to each other. The absorbent main body 10 ′ that absorbs the excretory fluid and the waist portion 20 ′ that covers the trunk as an example of the wearer's body part.

  The waist portion 20 'includes a first sheet 21' and a second sheet 22 'that are stacked in the thickness direction (the direction that penetrates the paper surface of FIG. 1). Further, the waist portion 20 ′ has a low stretch region AL ′ having a low lateral stretchability in the lateral central region AC ′ and a high stretch rate having a higher lateral stretch than the low stretch region AL ′. The region AH ′ is included in each of the end regions AE ′ and AE ′ located on both sides in the lateral direction of the central region AC ′. And this suppresses generation | occurrence | production of the wrinkle of the absorptive main body 10 'fixed to center area | region AC', and prevents the fall of a liquid absorption property or leak-proof property, On the other hand, high elasticity of end side area | region AE ' Therefore, the waist part of the wearer is firmly held by the waist part 20 'to prevent the diaper 1' from being worn out.

Special table 2014-511753

  Here, the low expansion / contraction region AL ′ and the pair of high expansion / contraction regions AH ′ and AH ′ are formed as follows, for example. First, as shown in the schematic plan view of FIG. 2A, a plurality of thread-like elastic members disposed between the first sheet 21 ′ and the second sheet 22 ′ along the lateral direction in the laterally extended state. 27 ′, 27 ′,... Are fixed in a vertical direction with a hot melt adhesive. In addition, the fixing with the adhesive is generally performed in each of the end regions AE ′ and AE ′, but is not generally performed in the central region AC ′. Therefore, when the plurality of thread-like elastic members 27 ′, 27 ′,... Are cut at one place PC, PC,... In the lateral direction in the central region AC ′, the cut thread-like elastic members 27 ′, 27 ′,. As shown in the schematic plan view of FIG. 2B, the thread-like elastic members 27 ′, 27 ′,... The region AE ′, AE ′ generally stays, and as a result, a low stretch region AL ′ is formed in the central region AC ′, and the high stretch regions AH ′, AE ′ are formed in the end side regions AE ′, AE ′. AH ′ is formed.

  As shown in FIG. 2A, the plurality of thread-like elastic members 27 ′, 27 ′,... Are cut between the first sheet 21 ′ and the second sheet 22 ′. The waist portion 20 'in the inserted state is associated with each thread-like elastic member 27', 27 '... at each position PC, PC ... with an appropriate clamping member (not shown) from both sides in the thickness direction. This is done by pinching. At that time, the first sheet 21 ′ and the second sheet 22 ′ are pressure-bonded at the clamped positions PC, PC... In the waist portion 20 ′, that is, as shown in FIG. 2B. In this way, the crimp portions j ′, j ′,... Are formed at the positions PC, PC,.

  Therefore, according to the diaper 1 ′, the through holes are not substantially formed at the positions PC, PC..., And as a result, the thread-like elastic members 27 ′ and 27 ′ are suppressed while suppressing damage to the waistline portion 20 ′. ... can be cut. As described above, each of the plurality of thread-like elastic members 27 ', 27', ... is cut at one place PC in the horizontal direction. Therefore, the number of the crimping parts j ′, j ′... Formed along with the cutting can be reduced, and as a result, the waist part 20 ′ is hard due to the formation of the crimping parts j ′, j ′. It can also be effectively prevented.

  However, here, when the plurality of crimping portions j ′, j ′,... Are formed over a wide range in the horizontal direction without overlapping partly in the horizontal direction as shown in FIG. There is a possibility that the crimping parts j ′, j ′, etc. are easily touched by human eyes and the appearance of the waist part 20 ′ is deteriorated. On the other hand, as shown in FIG. 2B, the respective crimping portions j ′, j ′... Are completely overlapped in the lateral direction so as to be completely overlapped without any deviation in the lateral direction. If it does, the part by which crimping | compression-bonding part j ', j' ... densely formed among waist part 20 'will become extremely hard compared with another part, As a result, a wearer and a caregiver When touching the waistline 20 ', there is a risk of feeling uncomfortable.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is formed by cutting a plurality of thread-like elastic members fixed to a covering member such as a waistline portion. The multiple crimping parts are placed in an appropriate size range that is neither too wide nor too narrow in the lateral direction, so that the appearance of the covering member is deteriorated and the uncomfortable feeling when touching the covering member is suppressed. There is.

The main invention for achieving the above object is:
Having a vertical direction, a horizontal direction and a thickness direction perpendicular to each other;
An absorbent article having a first sheet and a second sheet laminated in the thickness direction to form a covering member that covers a wearer's body part,
The covering member has a high stretch region having a higher stretchability in the lateral direction than a low stretch region located in the central region in the lateral direction, in each end region on both sides in the lateral direction,
Between the first sheet and the second sheet, a plurality of thread-like elastic members arranged along the horizontal direction in an extended state in the horizontal direction are fixed side by side in the vertical direction, Each of the plurality of thread-like elastic members is cut at one place in the lateral direction in a region corresponding to the low expansion / contraction region of the central region, and the cut piece of the thread-like elastic member contracts toward the lateral end side. By doing so, the low stretch region is formed in the central region, and the high stretch region is formed in the end region,
When the plurality of thread-like elastic members are cut at one place in the lateral direction, the first sheet and the second sheet are pressure-bonded at the cutting position, so that the central region has a plurality of pieces. Are formed by shifting the vertical position of each other,
At least one linear crimping portion of the plurality of linear crimping portions includes a portion that overlaps at least one other linear crimping portion in the lateral direction, and the other one linear crimping portion. A portion that does not overlap in the lateral direction with respect to
The other linear crimping portion includes a portion that overlaps the one linear crimping portion in the lateral direction, and a portion that does not overlap the one linear crimping portion in the lateral direction. Have
All of the linear crimping portions of the plurality of linear crimping portions each have an overlapping portion,
Through the overlapping part, all the linear crimping parts are continuously arranged in the lateral direction,
In the absorbent article, the one linear crimping portion and the other one linear crimping portion that overlap in the lateral direction are not adjacent to each other in the longitudinal direction .

  Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  According to the present invention, a plurality of pressure-bonding portions formed by cutting a plurality of thread-like elastic members fixed to a covering member such as a waistline portion are not excessively narrow and neither too wide in the lateral direction. By making it fall within the size range, it is possible to suppress the appearance of the covering member from deteriorating or to feel uncomfortable when touching the covering member.

It is a schematic plan view of the waist part 20 'of the disposable diaper 1'. 2A is a schematic plan view of the waistline portion 20 ′ before cutting the thread-like elastic members 27 ′, 27 ′... FIG. 2B is a plan view of the waistline portion 20 ′ after cutting the thread-like elastic members 27 ′, 27 ′. It is a schematic plan view. .. Is a schematic plan view of the waist portion 20 ′ when the crimping portions j ′, j ′... Formed at the cutting positions PC, PC. It is a schematic perspective view of the 3 piece type disposable diaper 1 as an example of the absorbent article of this embodiment. It is the schematic plan view which looked at the diaper 1 of the unfolding state from the skin side. It is the schematic plan view which looked at the same diaper 1 from the non-skin side. 7A is a cross-sectional view taken along line AA in FIG. 5, and FIG. 7B is a cross-sectional view taken along line BB in FIG. It is VIII-VIII sectional drawing in FIG. It is the schematic plan view which looked at the ventral belt member 20a from the non-skin side. It is the schematic plan view which looked at the ventral belt member 20a before cutting the rubber thread 27 from the non-skin side. It is a schematic plan view of lower region AD of ventral side belt member 20a for explaining the arrangement state of linear crimping parts j, j. It is a schematic plan view of the 1st modification of the arrangement pattern of linear crimping | compression-bonding part j, j .... It is a schematic plan view of the 2nd modification of the arrangement pattern of linear crimping | compression-bonding part j, j .... It is a schematic plan view of an arrangement pattern example in which dummy linear crimping portions jD1, jD9 are formed. 4 is a schematic plan view of an example in which one linear crimping portion j is formed on two or three thread rubbers 27. FIG.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

Having a vertical direction, a horizontal direction and a thickness direction perpendicular to each other;
An absorbent article having a first sheet and a second sheet laminated in the thickness direction to form a covering member that covers a wearer's body part,
The covering member has a high stretch region having a higher stretchability in the lateral direction than a low stretch region located in the central region in the lateral direction, in each end region on both sides in the lateral direction,
Between the first sheet and the second sheet, a plurality of thread-like elastic members arranged along the horizontal direction in an extended state in the horizontal direction are fixed side by side in the vertical direction, Each of the plurality of thread-like elastic members is cut at one place in the lateral direction in a region corresponding to the low expansion / contraction region of the central region, and the cut piece of the thread-like elastic member contracts toward the lateral end side. By doing so, the low stretch region is formed in the central region, and the high stretch region is formed in the end region,
When the plurality of thread-like elastic members are cut at one place in the lateral direction, the first sheet and the second sheet are pressure-bonded at the cutting position, so that the central region has a plurality of pieces. Are formed by shifting the longitudinal position of each other,
At least one linear crimping portion of the plurality of linear crimping portions includes a portion overlapping in the lateral direction with respect to at least one other linear crimping portion, and the other one linear crimping portion. A portion that does not overlap in the lateral direction with respect to
The other linear crimping portion includes a portion that overlaps the one linear crimping portion in the lateral direction, and a portion that does not overlap the one linear crimping portion in the lateral direction. It is an absorbent article characterized by having.

  According to such an absorbent article, the one linear crimping portion and the other one linear crimping portion provided on the covering member are portions that overlap each other in the lateral direction. And a portion that does not overlap. Therefore, these linear crimping portions can be formed within a moderate size range that is neither too wide nor too narrow in the lateral direction, and as a result, the appearance of the covering member may be deteriorated, An uncomfortable feeling when touching the member can be suppressed.

  Further, each of the plurality of thread-like elastic members is cut at one place in the lateral direction. Therefore, it is possible to reduce the number of the linear crimping portions formed along with the cutting, and as a result, to effectively prevent the covering member from becoming hard due to the formation of the linear crimping portions. it can.

  Furthermore, since the linear crimping portion is formed at the position where the thread-like elastic member is cut in the covering member, the through-hole is not generally formed in the covering member. Therefore, it is possible to suppress damage that may occur in the covering member as the linear elastic member is cut.

Such an absorbent article,
It is preferable that one linear crimping portion is formed for each of the plurality of thread-like elastic members.

  According to such an absorbent article, one linear crimping part is formed for each of the plurality of thread-like elastic members. Therefore, each of the plurality of linear crimping portions can be formed to have an appropriate length or can be appropriately dispersed, and as a result, the linear crimping portions are not too wide in the lateral direction. It becomes easy to form in an appropriate size range.

  In addition, since the length of the linear crimping portion can be shortened compared to the case where one linear crimping portion is formed for two or more thread-like elastic members, the linear crimping portion can be made inconspicuous. This also contributes effectively to suppressing the deterioration of appearance.

  Further, if one linear crimping portion is formed for each of the plurality of thread-like elastic members, the formation of the linear crimping portion that does not contribute to the cutting of the thread-like elastic member can be effectively prevented. The curing of the covering member is suppressed, and the covering member is easily maintained in a soft state.

Such an absorbent article,
All the linear crimping portions of the plurality of linear crimping portions each have an overlapping portion,
It is desirable that all the linear crimping portions are continuously arranged in the lateral direction through the overlapping portion.

  According to such an absorbent article, all the linear crimping | compression-bonding parts are arrange | positioned continuously regarding the horizontal direction through said overlapping part. Therefore, it becomes easy to form all the linear pressure-bonded portions within a moderate size range that is neither too wide nor too narrow in the lateral direction.

Such an absorbent article,
It is desirable that the one linear crimping portion and the other one linear crimping portion that overlap in the lateral direction are not adjacent to each other in the longitudinal direction.

  According to such an absorbent article, the one linear crimping portion and the other one linear crimping portion that overlap in the horizontal direction are not adjacent to each other in the vertical direction. That is, at least one other linear crimping portion is located between the one linear crimping portion and the other linear crimping portion in the vertical direction. Therefore, the linear crimping portions that overlap in the lateral direction can be separated appropriately in the vertical direction, and as a result, it is effective that the linear crimping portions are arranged in an excessively dense manner in the vertical direction. It can be avoided.

Such an absorbent article,
The number of the linear crimping portions that overlap in the lateral direction is preferably 2 or less at any position in the lateral direction.

  According to such an absorbent article, the number of linear crimping portions that overlap in the horizontal direction is 2 or less at any position in the horizontal direction, but this numerical value of 2 is the number of overlaps. The minimum value. Therefore, it can avoid effectively that a linear crimping | compression-bonding part is densely arranged in the horizontal direction.

Such an absorbent article,
It is desirable that the number of the linear crimping portions that overlap in the lateral direction is equal to the same number at any position in the lateral direction except for the linear crimping portions located at both ends in the lateral direction.

  According to such an absorbent article, the number of linear crimping portions that overlap in the horizontal direction is the same at any position in the horizontal direction except for the linear crimping portions located at both ends in the horizontal direction. Yes. Therefore, it is possible to equalize the horizontal distribution of the linear crimping portions, and as a result, it is possible to suppress a sense of discomfort when touching the region where the linear crimping portions are formed.

Such an absorbent article,
The central region has a dummy linear crimp portion formed at a position where the thread-like elastic member is not cut,
The dummy linear crimping portion overlaps in the lateral direction with respect to the non-overlapping portion of one linear crimping portion located at both ends in the lateral direction among the plurality of linear crimping portions. It is desirable to be formed as follows.

  According to such an absorbent article, the above-mentioned dummy linear crimping is performed so as to overlap in the lateral direction with respect to the non-overlapping part of one linear crimping part located at both ends in the lateral direction. The part is formed. Therefore, it becomes easy to make the number of the overlapping portions equal to the same number at any position in the horizontal direction.

Such an absorbent article,
It is desirable that none of the plurality of linear crimping portions overlaps in the vertical direction.

  According to such an absorbent article, since all the linear crimping parts do not overlap in the vertical direction, each of the plurality of thread-like elastic members arranged side by side in the vertical direction is arranged at one place in the horizontal direction. It can be cut reliably.

=== This Embodiment ===
FIG. 4 is a schematic perspective view of a three-piece type disposable diaper 1 as an example of the absorbent article of the present embodiment. FIG. 5 is a schematic plan view of the unfolded diaper 1 as seen from the skin side, and FIG. 6 is a schematic plan view of the diaper 1 as seen from the non-skin side. 7A is a sectional view taken along line AA in FIG. 5, FIG. 7B is a sectional view taken along line BB in FIG. 5, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

  As shown in FIGS. 5, 7A, and 8, the diaper 1 has a vertical direction, a horizontal direction, and a thickness direction as three directions orthogonal to each other. Moreover, since the diaper 1 is what is called a three-piece type, it has the absorptive main body 10 which is applied to a wearer's crotch part and absorbs excrement, such as urine, as a 1st component, The back side belt member 20a (corresponding to the cover member) that covers the wearer's torso (corresponding to the body part) from the abdominal side and covers the wearer's torso from the back side as the third part It has the member 20b (equivalent to a covering member). In the deployed state of FIG. 5, the abdominal band member 20 a and the back band member 20 b are arranged in parallel with a space between each other, while the absorbent main body 10 is stretched between them. End portions 10ea and 10eb in the longitudinal direction of the absorbent main body 10 are bonded and fixed to the nearest belt members 20a and 20b, respectively, and the external shape is substantially H-shaped in plan view. Further, from this state, the diaper 1 is folded in half with the substantially central portion C10 in the longitudinal direction of the absorbent main body 10 as a folding position, and the belt members 20a and 20b facing each other in the folded state are worn. When the belt members 20ae and 20be are to be brought into contact with the person's flank (that is, the end portions 20ae and 20be in the lateral direction) are connected by welding or the like, the belt members 20a and 20b are connected in an annular shape. Thus, the pants-type diaper 1 is formed in which the waistline opening 1HB and the pair of leghole openings 1HL, 1HL as shown in FIG. 4 are formed.

  In the following description, the longitudinal direction, the lateral direction, and the thickness direction of the diaper 1 are simply referred to as “vertical direction”, “lateral direction”, and “thickness direction”, respectively. Regarding the thickness direction, the side in contact with the wearer is also referred to as “skin side”, and the opposite side is also referred to as “non-skin side”.

  Hereinafter, the three components 10, 20a, and 20b of the diaper 1 will be described with reference to FIGS.

  As shown in FIG. 5, FIG. 7B, and FIG. 8, the absorbent main body 10 includes an absorbent core 11, and a top sheet 13 that covers the core 11 from the skin side and forms the skin side surface of the absorbent main body 10. And a back sheet 15 that covers the core 11 from the non-skin side and forms the non-skin side surface of the absorbent main body 10.

  The absorbent core 11 is formed by molding pulp fibers as an example of liquid absorbent fibers into a substantially hourglass shape in plan view as an example of a predetermined shape. The core 11 may contain a superabsorbent polymer as an example of a liquid absorbent granular material, or may include liquid absorbent materials other than liquid absorbent fibers and liquid absorbent granular materials. May be. In this example, the core 11 is covered with a liquid-permeable covering sheet 12 such as tissue paper, but may not be covered.

  The top sheet 13 is a liquid-permeable sheet, and the back sheet 15 is a liquid-impermeable sheet. And in a state where the absorbent core 11 is sandwiched between the top sheet 13 and the back sheet 15, the top sheet 13 and the back sheet 15 are bonded together at least on the four sides of the absorbent core 11 or in the vicinity thereof. Thereby, the absorptive main body 10 is substantially formed. In this example, a nonwoven fabric is used as the former liquid-permeable sheet 13, and a laminate sheet 15 of a resin film 15f and a nonwoven fabric 15nw is used as the latter liquid-impermeable sheet 15. Not limited to.

  In some cases, as shown in FIGS. 4, 5, and 7 </ b> B, the absorbent main body 10 may have a three-dimensional gather LSG or a leg gather gather LG on both sides in the lateral direction. The three-dimensional gather LSG is a well-known leakage barrier LSG provided upright at each end in the lateral direction of the topsheet 13 to prevent so-called side leakage. In this example, the formation of the three-dimensional gather LSG is such that the nonwoven fabric 15nw having a dimension projecting on both sides in the lateral direction with respect to the resin film 15f on the back sheet 15 is inward in the lateral direction at each lateral end. Although it is made by folding and providing an elastic member 16r such as rubber thread in the folded part, it is not limited to this. Further, the leg gathers LG are well-known stretchable parts LG formed in the leg leg openings 1HL, 1HL of the diaper 1, and the gathers LG are arranged in the longitudinal direction on both lateral parts of the absorbent main body 10, respectively. Is formed by an elastic member 17r such as a thread rubber provided along the line.

  On the other hand, as shown in FIGS. 5 and 6, the abdominal band member 20a and the back band member 20b are sheet-like members each having a substantially rectangular shape in a plan view that is long in the lateral direction, and as shown in FIG. The outer layer sheet 21 (corresponding to the first sheet) and the inner layer sheet 22 (corresponding to the second sheet) are laminated. The inner layer sheet 22 is located on the skin side in the thickness direction with respect to the outer layer sheet 21. Moreover, both the sheets 21 and 22 are formed with flexible sheets, such as a nonwoven fabric, and the spun bond nonwoven fabric is used in this example. However, the present invention is not limited to this, and another type of non-woven fabric may be used, or a resin film or woven fabric may be used. Further, in this example, a single fiber of polypropylene (PP) is used as a constituent fiber of the nonwoven fabric. However, the present invention is not limited to this, and a single fiber of other thermoplastic resin such as polyethylene may be used. A composite fiber such as a sheath core structure of polyethylene and PP may be used.

  Then, as shown in FIG. 5, the central regions 20ac and 20bc in the lateral direction of the band members 20a and 20b are overlapped and joined to the non-skin side surfaces of the longitudinal ends 10ea and 10eb of the absorbent main body 10. Has been.

  Incidentally, in this example, as shown in FIGS. 5 and 8, the planar size of the outer layer sheet 21 is a size that protrudes outward in the vertical direction from the inner layer sheet 22, and the protruding portion of the outer layer sheet 21. 21p is folded inward in the longitudinal direction to cover the longitudinal end portion 22e of the inner layer sheet 22 from the skin side in the thickness direction, but is not limited thereto.

  By the way, the belt members 20a and 20b are provided with lateral stretchability so that the belt members 20a and 20b can firmly hold the wearer's torso when the diaper 1 is worn. However, as described above, from the viewpoint of preventing a decrease in the liquid absorbency and leakage prevention property of the absorbent main body 10, as shown in FIG. 6, the absorbability of the absorbent main body 10 particularly among the band members 20 a and 20 b. In the regions 20ac and 20bc overlapping with the core 11, a non-stretchable region AL having almost no stretchability is formed.

  Hereinafter, this will be described in detail. Here, the ventral band member 20a and the back band member 20b have the same basic configuration. Therefore, in the following description, only the ventral band member 20a will be described, and the description of the dorsal band member 20b will be omitted. For convenience of explanation, as shown in the schematic plan view of FIG. 9, the ventral belt member 20a will be described below by dividing it into two regions AU and AD in the vertical direction. That is, the area AU located on the waistline opening 1HB side in the vertical direction is referred to as “upper area AU”, and the area AD located on the leg circumference opening 1HB side is referred to as “lower area AD”.

  As shown in FIG. 9, the absorbent core 11 of the absorbent main body 10 does not substantially overlap the upper region AU. Therefore, the region AU is given stretchability over the entire length in the lateral direction. In addition, in the imparting of stretchability, a plurality of thread rubbers 25, 25,... As a plurality of thread-like elastic members arranged in the lateral direction in the stretched state in the lateral direction are fixed to the same region AU in the longitudinal direction. The thread rubber 25 is fixed to the area AU by, for example, the thread rubber 25 or a hot melt adhesive applied to the area AU. Incidentally, examples of the fineness of the thread rubber 25 include 470 dtex to 940 dtex. Specific examples of the thread rubber 25 include LYCRA (trademark). This also applies to the rubber thread 27 provided in the lower region AD described later.

  On the other hand, since the absorbent core 11 of the absorbent main body 10 overlaps the central region ADc in the lateral direction of the lower region AD, the central region ADc has a non-stretchable region AL that has almost no lateral stretchability. (Corresponding to a low expansion / contraction region) is formed, and most of the end side regions ADe, ADe located on both sides of the central region ADc are not substantially overlapped with the absorbent core 11. In the end regions ADe and ADe, stretch regions AH and AH (corresponding to high stretch regions) having higher stretchability than the non-stretch region AL are formed.

  Here, the non-stretchable region AL of the central region ADc and the stretchable regions AH, AH of the end regions ADe, ADe are formed as follows. First, as shown in FIG. 10, between the outer layer sheet 21 and the inner layer sheet 22, a plurality of thread rubbers 27, 27... They are arranged side by side. Each thread rubber 27 is generally fixed with a hot melt adhesive in the area AH1 corresponding to the expansion / contraction area AH in the end side area ADe, but in the area AL1 corresponding to the non-expansion / contraction area AL in the central area ADc, Generally not fixed. Therefore, in the area AL1 corresponding to the non-stretchable area AL, the belt member 20a is clamped from both sides in the thickness direction by an appropriate clamping member (not shown), whereby the thread rubbers 27, 27. As shown in FIG. 9, the cut rubber threads 27, 27... Shrink toward the lateral end, and generally do not stay in the region AL1 corresponding to the non-stretchable region AL in the central region ADc. The region AH substantially remains in the region AH1 corresponding to the stretchable region AH, whereby the non-stretchable region AL is formed in the central region ADc, and the stretchable region AH is formed in the end side region ADe.

  At the positions PC, PC,..., Which are clamped by the clamping member as a result of such cutting, the outer layer sheet 21 and the inner layer sheet 22 are crimped, so that the linear crimping portions j, j. It is formed by shifting the position PC in the vertical direction. And since it is the crimping | compression-bonding part j, a through-hole is not substantially formed in the same position PC, As a result, the damage which may arise to the strip | belt member 20a with the cutting | disconnection of the thread rubber 27 can be suppressed. Moreover, as shown in the schematic plan view of FIG. 11, in this example, linear crimping parts j, j... Are formed as the linear crimping parts j, j. The width Wj is selected from a range of 0.1 mm to 0.5 mm, for example. If the length Lj is within the range, as will be described later at the end of this specification, a plurality of thread rubbers 27, 27... (See FIG. 15), it is possible to reliably cut. However, the linear crimping portion j is not limited to the linear shape as described above, and may be, for example, a zigzag broken line shape or a curved shape such as an arc line shape.

  Also, the appearance of the band member 20a can be achieved by keeping the above-described problem of the present invention, that is, “the linear crimping portions j, j... Within an appropriate size range that is neither too wide nor too narrow in the lateral direction. In order to solve the problem of “deteriorating and suppressing the uncomfortable feeling when touching the band member 20 a”, the linear crimp portions j, j... Are formed based on several laws. Explain about it. Incidentally, in FIG. 11 used for this description, ruled lines parallel to the vertical direction are shown with two-dot chain lines for the purpose of making it easy to compare the positional relationship in the horizontal direction. Similarly, the positional relationship in the vertical direction is also shown. For the purpose of facilitating the comparison, ruled lines parallel to the horizontal direction are shown along with two-dot chain lines.

  First, as shown in FIG. 11, in the lower region AD before the thread rubber 27 is cut, the thread rubber 27 along the lateral direction is spaced apart from the thread rubber 27 adjacent in the longitudinal direction at an appropriate interval. 11 are arranged side by side in the same vertical direction as an example. In this example, the thread rubbers 27, 27... Are cut for each thread rubber 27 at one place PC in the horizontal direction. That is, each rubber thread 27 is clamped and cut in the thickness direction at one PC in the lateral direction by the above-described unillustrated pressing member.

  Therefore, one linear crimping part j, j... Formed along with the cutting is also formed for each thread rubber 27, 27. Specifically, in the example of FIG. 11, 11 thread rubbers 27, 27... Are arranged in the lower region AD, so that the pinching and cutting are performed at 11 positions PC by the pinching member. As a result, a total of 11 linear crimping portions j, j... Are formed in the same number as the number of thread rubbers 27, 27. And if it is made like this, compared with the case where it is pinched by the pinching member at two or more places in the horizontal direction for each rubber thread 27, the linear crimping portion formed in the lower region AD of the belt member 20a The number of j, j... can be reduced, and as a result, it is possible to effectively prevent the lower region AD of the band member 20a from becoming excessively hard due to the formation of the linear crimping portions j, j. it can.

  Incidentally, in these eleven linear crimping portions j, j..., The lateral positions of the eleven linear crimping portions j, j... Are shifted, but for convenience of explanation, each of the eleven linear crimping portions in FIG. New symbols j1 to j11 are assigned to the parts j, j... In the order in which they are arranged from one to the other in the horizontal direction.

  On the other hand, the following rule will be described. In the example of FIG. 11, at least one linear crimping portion j and at least one other linear crimping portion j overlap each other in the lateral direction. And a portion that does not overlap.

  For example, when attention is paid to the two linear crimping portions j1 and j2 in FIG. 11, one linear crimping portion j1 is overlapped with a portion j1L that overlaps the other linear crimping portion j2 in the lateral direction. Similarly, the other linear crimping part j2 also includes a part j2L that overlaps the one linear crimping part j1 in the lateral direction and a non-overlapping part j2N. Have.

  And if it is such an overlap relationship, at least about the two linear crimping parts j1 and j2 of interest now will be excessively densely arranged as shown in FIG. 2B, or excessively dispersed as shown in FIG. It is possible to effectively avoid the arrangement, and as a result, it is possible to fit these target linear crimping portions j1 and j2 in a range of an appropriate size in the lateral direction. And this contributes not a little to keeping all the linear pressure-bonding portions j, j... In an appropriate size range in the lateral direction.

  Therefore, in this example, such an overlap relationship is established not only for the two linear crimping portions j1 and j2 noted above, but also for all the linear crimping portions j, j... Formed in the lower region AD. Like to do.

  For example, when attention is paid to the two linear crimping portions j2 and j3 in FIG. 11, one linear crimping portion j2 is overlapped with a portion j2L1 that overlaps the other linear crimping portion j3 in the lateral direction. Similarly, the other linear crimping portion j3 also includes a portion j3L that overlaps one linear crimping portion j2 in the lateral direction and a non-overlapping portion j3N. Have. This relationship is also established when attention is paid to the linear crimping portions j3, j4. Similarly, the linear crimping portions j4, j5, the linear crimping portions j5, j6, the linear crimping portions j6, j7. The cases where the linear crimping portions j7 and j8, the linear crimping portions j8 and j9, the linear crimping portions j9 and j10, and the linear crimping portions j10 and j11 are focused are also established. Therefore, in this example, all the linear pressure-bonding portions j, j... Are formed in an appropriate size range in the lateral direction.

  However, it is not limited to this. That is, as described above, if the overlap relationship is established for at least two linear crimping portions j, j, the linear crimping portions j, j. It is possible to enjoy the effect of being contained in

Here, when the linear crimping portion j2 in FIG. 11 is examined in detail, the portion j2N that does not overlap the adjacent linear crimping portion j1 on one side in the horizontal direction is the other side in the lateral direction. An overlapping portion j2L1 is formed on the linear crimping portion j3 adjacent on the side. Such a relationship, that is, a portion (j2N) that has not overlapped with a predetermined linear crimping portion j (j1) is overloaded with respect to another linear crimping portion j (j3). The relationship of being a portion to be wrapped (j2L1) is also established sequentially for the linear crimping portions j3 to j11, and thus, all the linear crimping portions j1 to j11 are overlapped with each other. It arrange | positions continuously regarding the horizontal direction through the part to do.

Therefore, all the linear crimping portions j, j... Formed in the lower region AD are effectively within a moderate size range that is neither too wide nor too narrow in the lateral direction. The appearance of the member 20a is deteriorated, and the uncomfortable feeling when touching the band member 20a is effectively suppressed.

  Further, in the example of FIG. 11, in order to form such a horizontal overlap relationship without any problem, the direction of the linear crimping portion j is inclined at an inclination angle α of an appropriate size other than 90 ° from the vertical direction. In addition, not only the magnitude of the inclination angle α but also the direction in which it is inclined is aligned for all the linear crimping portions j, j. Specifically, in this example, the inclination angle α is set to 30 °, and the inclination direction is about half from the vertical direction when the lower region AD is viewed from the non-skin side in the thickness direction. It is rotating clockwise.

  However, there is no limitation to this as long as the linear crimping portions j, j can be overlapped in the lateral direction. That is, the magnitude of the inclination angle α is not limited to 30 ° as described above, and the magnitude of the inclination angle α may not be uniform over all the linear crimping portions j, j. Does not have to align the inclination direction over all the linear crimping parts j, j.

  In this example, the linear pressure-bonding portions j, j that overlap in the horizontal direction are arranged so as not to be adjacent to each other in the vertical direction. For example, in the example of FIG. 11, when attention is paid to the two linear crimping portions j1 and j2, the two linear crimping portions j1 and j2 overlap each other in the horizontal direction. Between the two linear crimping parts j1 and j2, there are other linear crimping parts j5 and j9, so that the linear crimping parts j1 and j2 that overlap in the horizontal direction are Are not next to each other. Therefore, the linear crimping portions j1 and j2 that overlap in the horizontal direction can be appropriately separated in the vertical direction, and as a result, the linear crimping portions j1 and j2 that overlap each other are densely packed. It effectively avoids being placed.

  And in this example of FIG. 11, such a positional relationship is materialized about all the linear crimping parts j and j .... That is, the linear crimping parts j2 and j3 that overlap in the horizontal direction are also established, and similarly, the linear crimping parts j3 and j4, the linear crimping parts j4 and j5, and the linear crimping parts j5 and j6 The linear crimping portions j6 and j7, the linear crimping portions j7 and j8, the linear crimping portions j8 and j9, the linear crimping portions j9 and j10, and the linear crimping portions j10 and j11 are also established. ing. Therefore, it is also effectively avoided that the linear pressure-bonding portions j, j that overlap each other in the horizontal direction are densely arranged in the vertical direction.

  However, it is not limited to this. That is, if the at least two linear crimping portions j, j that overlap each other in the horizontal direction are not adjacent to each other in the vertical direction, the above-described effect of avoiding the dense arrangement in the vertical direction can be enjoyed accordingly. Can do.

  In the example of FIG. 11, the number of linear crimping portions j that overlap in the horizontal direction is set to 2 or less at an arbitrary position in the horizontal direction. The numerical value 2 is the minimum value of the number of overlaps. Therefore, it is possible to more effectively avoid the linear crimping portions j, j... Being densely arranged in the lateral direction.

  FIG. 12 is a schematic plan view of a first modification of the arrangement pattern of the linear crimping portions j, j. The arrangement pattern of the first modification is applied to the central region ADc in the lower region AD of the back band member 20b. That is, as shown in FIG. 6 described above, a plurality of linear crimping portions j, j... Are formed in this arrangement pattern in the central region ADc in the lower region AD of the back band member 20b. Since it is clear from FIG. 12 that this arrangement pattern also satisfies all the above-mentioned rules, a detailed description thereof will be omitted. Incidentally, in the example of FIG. 6, the linear crimping portions j, j... Of the ventral band member 20a and the linear crimping portions j, j. Although it is formed in each of the regions on the side, the arrangement of the linear crimping portions j, j... Can be dispersed in the lateral direction as long as such. As a result, it is possible to suppress a sense of incongruity when the pant-type diaper 1 of FIG. 4 is touched.

  FIG. 13 is a schematic plan view of a second modification of the arrangement pattern of the linear crimping portions j, j.

  In the above-described embodiment, as shown in FIG. 11, the number of linear crimping portions j, j that overlap in the horizontal direction is not the same in any position in the horizontal direction. For example, at the first focus position P1 and the second focus position P2 in the horizontal direction of FIG. 11, there are two linear crimp portions j and j, respectively. Although the number is “2”, there is only one linear crimping portion j at the third focus position P3 and the fourth focus position P4 in FIG. The number of the crimping parts j is not “2”. As a result, in the arrangement pattern of FIG. 11, the number of linear crimping portions j, j that overlap in the horizontal direction is not the same in any position in the horizontal direction.

  On the other hand, in the second modification of FIG. 13, the number of linear crimping portions j, j that overlap in the horizontal direction is the same as the number of linear crimping portions j1, j9 positioned at both ends in the horizontal direction. The number is the same at an arbitrary position in the direction, specifically, “2” as an example of the same number. Therefore, it is possible to equalize the lateral distribution of the linear crimping portions j, j..., And as a result, it is possible to suppress an uncomfortable feeling when touching the region where the linear crimping portions j, j. Or the appearance can be improved.

  In some cases, as shown in the schematic plan view of FIG. 14, in addition to the arrangement pattern of the second modified example, dummy linear crimping portions jD1, jD9 are provided at positions where the thread rubber 27 is not cut in the vertical direction. It may be formed. In the example of FIG. 14, the dummy linear crimping portions jD1 and jD9 correspond to the non-overlapping portions j1N and j9N of the linear crimping portions j1 and j9 located at both ends in the lateral direction, respectively. It is formed so as to overlap in the lateral direction.

  Therefore, when including such dummy linear crimping portions jD1 and jD9, the number of linear crimping portions j that overlap in the horizontal direction can be made equal to the same number “2” at any position in the horizontal direction. Thus, it is possible to more effectively suppress the uncomfortable feeling when touching the region where the linear crimping portions j, j... Are formed. However, it is not always necessary to align “2”, and the number of overlapping linear crimping portions j may be aligned to a plurality of numbers other than “2” such as “3” and “4”.

  Further, in any of the examples shown in FIGS. 11 to 14, none of the linear crimping portions j, j... Overlap in the vertical direction. The thread rubbers 27, 27,... Arranged can be reliably cut at a single PC in the horizontal direction. However, the present invention is not limited to this. That is, as long as each rubber thread 27, 27... Can be cut at a single PC in the horizontal direction, the linear pressure-bonding portions j, j may slightly overlap in the vertical direction.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, as shown in FIG. 11, the thread rubber 27 is exemplified as the thread-like elastic member, and one linear crimping portion j, j... Is provided for each of the plurality of thread rubbers 27, 27. It was formed one by one, but it is not limited to this. For example, as shown in FIG. 15, one linear crimp portion j may be formed on two or three thread rubbers 27 as an example of two or more. That is, one linear crimping portion j may be formed so as to straddle two thread rubbers 27, 27 or three thread rubbers 27, 27, 27. And even if it does in this way, each thread rubber 27 will be cut | disconnected by one place PC in the horizontal direction, respectively. However, in this case, as compared with the case where one linear crimping portion j, j... Is formed for each of the plurality of thread rubbers 27, 27. There is a fear that the length becomes long, and in this case, the linear crimping portion j is easily noticeable. Therefore, from the viewpoint of the appearance of the belt member 20a, it is preferable to form one linear crimping portion j, j ... for each of the plurality of thread rubbers 27, 27 ... as shown in FIG.

  In above-mentioned embodiment, although the 3 piece type disposable diaper 1 was illustrated as an example of an absorbent article, it is not restricted to this at all. For example, you may form the above-mentioned linear crimp part j, j ... in a 2 piece type disposable diaper. Incidentally, a two-piece type disposable diaper has a two-layered exterior sheet having an abdominal part, a crotch part, and a dorsal part as a first component, and is fixed to the skin side of the exterior sheet. It is a diaper having the sexable body 10 as the second part. And in that case, each thread rubber 27, 27 ... will be inserted between two layers which an exterior sheet has.

  In above-mentioned embodiment, although the underpants type disposable diaper 1 was illustrated as an example of an absorbent article, it is not restricted to this at all. That is, it may be a tape-type disposable diaper. The tape-type disposable diaper has an abdominal side that covers the wearer's torso from the abdomen side and a back side that covers the torso from the back side. It is a type of diaper that uses a fastening tape to connect. Furthermore, in the above-described embodiment, the trunk portion is illustrated as the wearer's body part, and the band members 20a and 20b are illustrated as the covering members covering the trunk portion. However, the present invention is not limited thereto. Therefore, the absorbent article is not limited to the disposable diaper 1. For example, the present invention may be applied to a urine collection pad or a sanitary napkin.

  In the above-described embodiment, there is no illustration sheet on which an illustration is drawn or a treatment sheet for the purpose of weakening the contact of each end 10ea, 10eb in the longitudinal direction of the absorbent main body 10 with the skin. Needless to say, a known configuration applicable to the absorbent article may be appropriately provided. In the case of an illustration sheet, it is the position of the central region ADc of the lower region AD of the ventral side band member 20a or the central region ADc of the lower region AD of the back side band member 20b, and the outer layer sheet of each of the band members 20a and 20b. 21 and the inner layer sheet 22. Moreover, in the case of a care sheet, the absorbent body 10 is provided so as to cover both ends 10ea, 10eb in the longitudinal direction and the band members 20a, 20b while covering both from the skin side.

  In the above-described embodiment, the linear crimping portion j is exemplified, but the concept of the linear crimping portion j includes a linear fusion portion formed by fusing two continuous sheets 21 and 22 to each other. .

1 disposable diaper (absorbent article) 1HB waist opening, 1HL leg opening,
10 Absorbent body, 10ea end, 10eb end,
11 Absorbent core, 12 Cover sheet,
13 surface sheet, 15 back sheet, 15f resin film, 15nw nonwoven fabric,
16r elastic member,
17r elastic member,
20a ventral belt member (cover member), 20ac central region,
20ae end, 20be end,
20b dorsal belt member (cover member),
21 outer layer sheet (first sheet), 21p portion 22 inner layer sheet (second sheet), 22e end,
25 Rubber thread,
27 Rubber thread (thread-like elastic member),
AU upper area,
AD lower region, ADc center region, ADe end side region,
AH stretch region (high stretch region), AH1 region,
AL non-stretchable region (low stretchable region), AL1 region j linear crimping part, j1 linear crimping part, j1N non-overlapping part,
j2 linear crimping part,
j2L overlapping part, j2N non-overlapping part,
j2L1 overlapping part, j2N1 non-overlapping part,
j3 linear crimping part,
j3L overlapping part, j3N non-overlapping part,
j4 linear crimping part, j5 linear crimping part, j6 linear crimping part, j7 linear crimping part,
j8 linear crimping part, j9 linear crimping part, j10 linear crimping part, j11 linear crimping part,
jD1 dummy linear crimp part, jD9 dummy linear crimp part,
PC position,
LSG solid gather,
LG Leg gathers,
C10 substantially central part, CL20 center position,

Claims (6)

Having a vertical direction, a horizontal direction and a thickness direction perpendicular to each other;
An absorbent article having a first sheet and a second sheet laminated in the thickness direction to form a covering member that covers a wearer's body part,
The covering member has a high stretch region having a higher stretchability in the lateral direction than a low stretch region located in the central region in the lateral direction, in each end region on both sides in the lateral direction,
Between the first sheet and the second sheet, a plurality of thread-like elastic members arranged along the horizontal direction in an extended state in the horizontal direction are fixed side by side in the vertical direction, Each of the plurality of thread-like elastic members is cut at one place in the lateral direction in a region corresponding to the low expansion / contraction region of the central region, and the cut piece of the thread-like elastic member contracts toward the lateral end side. By doing so, the low stretch region is formed in the central region, and the high stretch region is formed in the end region,
When the plurality of thread-like elastic members are cut at one place in the lateral direction, the first sheet and the second sheet are pressure-bonded at the cutting position, so that the central region has a plurality of pieces. Are formed by shifting the vertical position of each other,
At least one linear crimping portion of the plurality of linear crimping portions includes a portion that overlaps at least one other linear crimping portion in the lateral direction, and the other one linear crimping portion. A portion that does not overlap in the lateral direction with respect to
The other linear crimping portion includes a portion that overlaps the one linear crimping portion in the lateral direction, and a portion that does not overlap the one linear crimping portion in the lateral direction. Have
All of the linear crimping portions of the plurality of linear crimping portions each have an overlapping portion,
Through the overlapping part, all the linear crimping parts are continuously arranged in the lateral direction,
The absorbent article according to claim 1, wherein the one linear pressure-bonding portion and the other one linear pressure-bonding portion that overlap in the lateral direction are not adjacent to each other in the vertical direction . The absorbent article according to claim 1,
An absorbent article, wherein one linear crimping portion is formed for each of the plurality of thread-like elastic members. The absorbent article according to claim 1 or 2 ,
The number of the said linear crimping | compression-bonding parts which overlap in the said horizontal direction is 2 or less in the arbitrary positions of the said horizontal direction, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 3 ,
The number of the linear crimping portions overlapping in the lateral direction is equal to the same number at any position in the lateral direction except for the linear crimping portions located at both ends in the lateral direction. Absorbent article. The absorbent article according to any one of claims 1 to 4 ,
The central region has a dummy linear crimp portion formed at a position where the thread-like elastic member is not cut,
The dummy linear crimping portion overlaps in the lateral direction with respect to the non-overlapping portion of one linear crimping portion located at both ends in the lateral direction among the plurality of linear crimping portions. An absorbent article characterized by being formed as described above. The absorbent article according to any one of claims 1 to 5 ,
An absorbent article, wherein none of the plurality of linear crimping portions overlaps in the longitudinal direction.

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