JP2019025066A - Absorbent article - Google Patents

Abstract

To hardly cause anxiety about strength of a belt member to a user in an absorbent article having graphics.SOLUTION: In an absorbent article which includes a front side belt member 30 connected to a front side upper end part of an absorbent body 10, and a rear side belt member 40 connected to a rear side upper end part, both end parts of the front side belt member and both end parts of the rear side belt member are connected each other in the lateral direction. The absorbent body has a leak-prevention sheet, and is provided with main graphics (101,102) at a non-skin lateral face of the leak-prevention sheet in at least one side of the front side and the rear side. The area of the main graphics in a state that the absorbent body extends is 40% or more of the area of the non-skin lateral face at the one side, and the area of an overlapped portion of the belt members at the one side and the main graphics is 50% or more of the area of the main graphics.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an absorbent article.

  Disposable diapers are known as absorbent articles that absorb excrement. As one form of such disposable diapers, a diaper with improved design is known by attaching a pattern such as a character or a pattern to the non-skin side of an absorbent main body that absorbs excreta. For example, in Patent Document 1, among members constituting a diaper, in a non-woven fabric that forms a back sheet and a thread rubber that forms an elastic member, the content of titanium oxide is set to 5% by weight or less. Disposable diapers that have improved the visibility of the pattern attached to the inside of the back sheet through rubber or nonwoven fabric are disclosed.

JP 2004-188060 A

  However, in the disposable diaper of patent document 1, since the component (content of titanium oxide) is limited, the whiteness of the nonwoven fabric may appear low, or the nonwoven fabric itself may appear thin. In such a diaper, there is a risk that the user (a person who causes the wearer to wear a diaper, for example, an infant's guardian) may be worried that the nonwoven fabric may be torn or damaged during use. . In particular, in a so-called three-piece type disposable diaper in which a front band member is bonded to the front side of the absorbent main body and a rear band member is bonded to the rear side of the absorbent main body, the band member covering the circumference of the wearer looks thin There is a concern that the diaper cannot be used with confidence.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to make it difficult for a user to be concerned about the strength of a band member in an absorbent article having a graphic. .

  The main invention for achieving the above object is:

  An absorbent body having an up-down direction, a left-right direction, and a front-rear direction intersecting each other, provided along the up-down direction, and bent back and forth at the crotch, and provided along the left-right direction, on the front side A front band member joined to the upper front end in the up-down direction of the absorbent main body and the front band member are provided along the left-right direction as separate bodies, and the up-down direction of the absorbent main body on the rear side A rear band member joined to the rear upper end of the absorbent article, wherein both end portions of the front belt member and both end portions of the rear band member are joined to each other in the left-right direction. The absorbent main body includes a liquid-absorbent absorbent core and a liquid-impermeable leak-proof sheet disposed on the non-skin side of the absorbent core, and at least one of the front side and the rear side. On the non-skin side of the leak-proof sheet An in-graphic is provided, and in a state where the absorbent main body is extended in the vertical direction and the horizontal direction, the area of the main graphic is 40% or more of the area of the non-skin side surface on the one side. And the area of the part which the said one side belt | band | zone member and the said main graphic overlap is 50% or more of the area of the said main graphic, It is an absorbent article characterized by the above-mentioned.

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

  ADVANTAGE OF THE INVENTION According to this invention, in the absorbent article which has a graphic, it can make it difficult for a user to produce uneasiness with respect to the intensity | strength of a strip member.

It is the schematic perspective view which looked at the diaper 1 from the front side. It is the schematic plan view which looked at the diaper 1 which is an expansion | deployment and the expansion | extension state from the skin side. It is the schematic sectional drawing shown about the AA cross section in FIG. It is a figure explaining the structure of the absorptive main body. FIG. 5A is a diagram for explaining the arrangement of the front main graphic 101 on the front side surface of the diaper 1. FIG. 5B is a diagram illustrating the arrangement of the rear main graphic 102 on the rear side of the diaper 1. It is a figure showing signs that the infant who wears diaper 1 goes up and down. It is a figure explaining the cross-sectional state of the diaper 1 of a pants type form.

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

  An absorbent body having an up-down direction, a left-right direction, and a front-rear direction intersecting each other, provided along the up-down direction, and bent back and forth at the crotch, and provided along the left-right direction, on the front side A front band member joined to the upper front end in the up-down direction of the absorbent main body and the front band member are provided along the left-right direction as separate bodies, and the up-down direction of the absorbent main body on the rear side A rear band member joined to the rear upper end of the absorbent article, wherein both end portions of the front belt member and both end portions of the rear band member are joined to each other in the left-right direction. The absorbent main body includes a liquid-absorbent absorbent core and a liquid-impermeable leak-proof sheet disposed on the non-skin side of the absorbent core, and at least one of the front side and the rear side. On the non-skin side of the leak-proof sheet An in-graphic is provided, and in a state where the absorbent main body is extended in the vertical direction and the horizontal direction, the area of the main graphic is 40% or more of the area of the non-skin side surface on the one side. And the area of the part which the said belt member and the said main graphic overlap is 50% or more of the area of the said main graphic, The absorbent article characterized by the above-mentioned.

  According to such an absorbent article, in the area where the main graphic and the belt member overlap, the visibility of the main graphic is lowered, and the color looks light or the outline looks blurred. Thereby, the thickness (thickness) of the band member can be easily recognized by the user, and the user can be prevented from feeling uneasy about the strength of the band member.

  In such an absorbent article, the main graphic has a region where the absorbent main body and the one side band member overlap with each other, and the absorbent main body and the one side band member do not overlap. It is desirable that they are arranged across the boundary with the region.

  According to such an absorbent article, the main graphic looks clear in a region that does not overlap with the band member, whereas the visibility of the main graphic appears to decrease in the region overlapping with the band member. Therefore, a difference in visibility between the portion of the main graphic that overlaps the band member and the portion that does not overlap is clear, and the thickness of the band member can be more easily recognized. Thereby, it becomes easy to suppress a user's anxiety.

  In such an absorbent article, the front band member and the rear band member each have a skin-side nonwoven fabric and a non-skin-side nonwoven fabric, and the skin-side nonwoven fabric and the non-skin-side nonwoven fabric are band member joint portions. It is desirable that at least a part of the main graphic does not overlap with the region where the band member joint portion is provided.

  According to such an absorbent article, when the band member contracts in the left-right direction when the absorbent article is worn, the skin-side nonwoven fabric and the non-skin-side nonwoven fabric are thick in the region where the band member joint portion is not provided. It may float up in the direction. Thus, the non-woven fabric floating portion and the main graphic are arranged so as to overlap (that is, the main graphic has a portion that does not overlap with the band member joint portion), thereby further improving the visibility of the main graphic. Since it falls, it becomes easier for the user to recognize the thickness of the band member.

  In such an absorbent article, the absorbent main body has an exterior sheet on the non-skin side of the leak-proof sheet, and the basis weight of the nonwoven fabric forming the front band member and the rear band member is the exterior It is desirable that the basis weight of the nonwoven fabric forming the sheet is larger.

  According to such an absorbent article, since the nonwoven fabric of the exterior sheet has a small basis weight, the light transmittance is high, and since the basis weight of the nonwoven fabric of the belt member is large, the light transmittance is low. Accordingly, the main graphic is easily seen through in an area where the absorbent main body and the band member do not overlap, and the main graphic is difficult to see in an area where the absorbent main body and the band member overlap. Therefore, it is possible to make the user more easily recognize the thickness of the band member.

  In such an absorbent article, the front belt member and the rear belt member each have a waist elastic member that expands and contracts in the left-right direction, and at least a part of the main graphic is subjected to tension by the waist elastic member. It is desirable that it overlaps with the area that is being used.

  According to such an absorbent article, when the absorbent article is worn, a plurality of ridges are formed on the surface of the band member due to expansion and contraction of the waistline elastic member, and deformed into a bellows shape. Therefore, the visibility of the main graphic is lowered at the portion overlapping with the region where the ridges are formed, and the user can easily recognize the thickness and softness of the band member.

  In such an absorbent article, the front side belt member and the rear side band member are each provided with a plurality of belt-like joints along the vertical direction via main body joints arranged at predetermined intervals in the left-right direction. It is preferable that the main graphic is joined to the absorbent main body, and at least a part of the main graphic overlaps with a region where the main body joint is provided.

  According to such an absorbent article, when the absorbent article is worn, the band member and the absorbent main body are easily lifted in the thickness direction so that the band member and the absorbent main body are separated from each other between two band-like joint portions adjacent in the left-right direction. . In the raised area, the visibility of the main graphic is greatly reduced, so that the thickness and softness of the band member are more easily recognized.

  In such an absorbent article, it is desirable that a rear main graphic is provided on the rear side of the absorbent main body.

  According to such an absorbent article, when a wearer (such as an infant) goes up and down while wearing the absorbent article, the rear main graphic is used on the rear side of the absorbent main body that covers the buttocks of the infant. (Parents etc.) will be easily noticeable. Therefore, it becomes easy to recognize that there is a difference in visibility between the portion overlapping the rear side band member and the portion not overlapping in the rear graphic.

  In such an absorbent article, a front main graphic is provided on the front side of the absorbent main body, and a rear main graphic is provided on the rear side of the absorbent main body. It is preferable that the center position of the graphic is higher than the center position of the rear main graphic.

  According to such an absorbent article, since the front main graphic is provided at a high position, it is easy to suppress the front main graphic from being sandwiched between the legs of the wearer and being contracted during wearing. On the other hand, by providing the rear main graphic at a low position, the rear main graphic is easily visible in a wide range of the wearer's buttocks. Therefore, the front and rear main graphics are easily visually recognized in an optimal state.

  In such an absorbent article, it is preferable that the area of the front main graphic is smaller than the area of the rear main graphic.

  According to such an absorbent article, by forming the rear main graphic as large as possible, the visibility as the entire rear main graphic is improved, and the portion that does not overlap with the portion that overlaps with the rear band member It is possible to make it easier for the user to recognize that there is a difference in visibility.

  In such an absorbent article, it is desirable that the area of the portion where the front main graphic and the front band member overlap is smaller than the area of the portion where the rear main graphic and the rear band member overlap. .

  According to such an absorbent article, since the rear main graphic is easily noticeable to the user when the wearer makes a high and high, the overlapping portion with the rear side band member is made as large as possible so that the overlapping portion The degree of lowering of the visibility of the rear main graphic at is easily noticeable. Therefore, the user can easily recognize the thickness of the belt member.

  In such an absorbent article, an average print gradation value of the main graphic in a portion where the main graphic and the one side surface of the absorbent main body overlap, and the main graphic and the absorbent main body It is desirable that the average of the print gradation values of the main graphic in a portion where the one side surface does not overlap is equal.

  According to such an absorbent article, the density of the printed main graphic is comparable between the portion overlapping with the band member and the portion not overlapping. When such an absorbent article is viewed from the outside, the density of the main graphic appears to be lighter than the actually printed image in the portion overlapping the belt member. On the other hand, in the portion that does not overlap with the band member, the main graphic appears to have the same density as the actually printed image. Therefore, it becomes clear that the visibility of the main graphic is lowered in the portion overlapping with the band member, and the user can easily recognize the thickness of the band member.

  In such an absorbent article, it is desirable that the thickness of the contour line forming the outer shape of the main graphic is 3 mm or more.

  According to such an absorbent article, in a region where a plurality of non-woven fabrics are laminated on the main graphic (a region overlapping with the belt member), the shape of the main graphic can be recognized through the non-woven fabric. It becomes easy to understand that the sex has declined.

  In this absorbent article, it is preferable that the main graphic has the same design as the character displayed on the product package of the absorbent article.

  According to such an absorbent article, the main graphic is easily recognized by infants and their guardians, and the relationship between the absorbent article and the main graphic is easily understood.

  In this absorbent article, it is desirable that the position of the rear upper end of the absorbent main body is higher than the position of the front upper end of the absorbent main body in the vertical direction.

  According to such an absorbent article, since the area of the rear side surface of the absorbent main body is larger than the area of the front side surface, the area where the main graphic can be printed on the rear side surface is increased. Therefore, the rear main graphic can be designed more freely. Thereby, the design property of an absorbent article can be improved.

  In such an absorbent article, the absorbent main body is provided with an indicator that changes color when in contact with moisture along the vertical direction, and the front side of the absorbent main body in the vertical direction It is desirable that the length of the indicator arranged in the is longer than the length of the indicator arranged on the rear side of the absorbent main body.

  According to such an absorbent article, the rear main graphic and the indicator are unlikely to overlap with each other, so that the visibility of the rear main graphic is suppressed from being deteriorated unnecessarily by the indicator.

  In such an absorbent article, a front main graphic is provided on the front side of the absorbent main body, a rear main graphic is provided on the rear side of the absorbent main body, the front main graphic and the indicator It is desirable that the area of the overlapping portion is larger than the area of the overlapping portion of the rear main graphic and the indicator.

  According to such an absorbent article, since the area of the overlapping portion between the rear main graphic and the indicator is small, the visibility of the rear main graphic is hardly deteriorated even when the color of the indicator is changed. On the other hand, the area of the overlapping portion between the front main graphic and the indicator is increased, but the front main graphic is less visible compared to the rear main graphic, so that the deterioration of the visibility of the absorbent article as a whole is less noticeable. Therefore, the user can easily recognize the difference in the visibility of the main graphic in the area that overlaps with the band member and the area that does not overlap.

  In this absorbent article, it is desirable that the indicator is not disposed on the rear side of the absorbent main body.

  According to such an absorbent article, the area of the overlapping portion between the indicator and the rear main graphic can be minimized, so that even if the color of the indicator changes, the rear main graphic is unnecessary. It becomes easy to suppress deterioration of visibility.

  In such an absorbent article, it is desirable that the rear main graphic and the indicator do not overlap.

  According to such an absorbent article, even if the color of the indicator is changed, the visibility of the rear main graphic is hardly affected, and therefore the unnecessary deterioration of the visibility of the rear main graphic is further reduced. It becomes easy to suppress.

=== Embodiment ===
<Composition of disposable diapers>
As an example of the absorbent article according to the embodiment, a disposable diaper 1 (hereinafter, also simply referred to as “diaper 1”) mainly for infants will be described. FIG. 1 is a schematic perspective view of the diaper 1 viewed from the front side. FIG. 2 is a schematic plan view of the diaper 1 in the unfolded and extended state as seen from the skin side. FIG. 3 is a schematic cross-sectional view showing the AA cross-section in FIG. 2. FIG. 4 is a diagram illustrating the structure of the absorbent main body 10. In addition, the "elongation state" in FIG. 2 is a state in which the product (diaper 1) is extended without any problem, specifically, each member constituting the diaper 1 (for example, an absorbent main body 10 or a front side belt member described later) 30) or the like is equal to or close to the dimension of the member itself.

  The diaper 1 has an up-down direction, a left-right direction, and a front-rear direction as three directions orthogonal to each other in the pant-type state of FIG. In the following, the upper side in the up-down direction in this pant-type state is also referred to as “trunk opening side”, and the lower side in the vertical direction is also referred to as “inseam side”. The front side in the front-rear direction is also referred to as “abdominal side”, and the rear side is also referred to as “back side”.

  On the other hand, in the developed state of FIG. 2, the diaper 1 has a longitudinal direction and a width direction as three directions orthogonal to each other. In the following description, the one side and the other side in the longitudinal direction in the developed state are also referred to as “abdominal side” and “back side”, respectively. The width direction in the unfolded state is the same direction as the left-right direction in the pants-type state. Therefore, in the following, the width direction is also referred to as “left-right direction”. Moreover, the longitudinal direction of the unfolded state is a direction along the vertical direction of the pants-type state. In addition, as shown in FIG. 3, the direction perpendicular to the vertical direction (longitudinal direction) and the horizontal direction (width direction) is referred to as the “thickness direction”, and the side in contact with the skin of the wearer is referred to as the “skin side”. The opposite side is referred to as the “non-skin side”.

  As shown in FIG. 1, the diaper 1 is a so-called three-piece type diaper and has three parts 10, 30, and 40. That is, this diaper 1 has an absorbent main body 10 that is applied to the wearer's crotch as a first part and absorbs excrement such as urine, and as a second part from the front side of the wearer to the stomach side. It has the front side belt member 30 which covers a part, and has the back side belt member 40 which covers a back side part from the back side of the wearer as a 3rd part.

  As shown in FIG. 2, in the unfolded state of the diaper 1, the front belt member 30 and the rear belt member 40 are arranged in parallel with a gap in the longitudinal direction (vertical direction) of the absorbent main body 10. Between these, the absorptive main body 10 is spanned. The front upper end portion including the front upper end 10ea of the absorbent main body 10 is joined to the front band member 30, and the rear upper end portion including the rear upper end 10eb of the absorbent main body 10 is bonded and fixed to the rear band member 40. The external shape is substantially H-shaped in plan view.

  And from this state, the absorptive main body 10 is folded in half at the folding position C10 in the longitudinal direction. That is, it is bent back and forth at the crotch. In this folded state, the front band member 30 and the rear band member 40 facing each other are the side edge joint part 30ew and the side edge joint part 40ew (that is, the left and right side joint parts) that are to be brought into contact with the wearer's flank. When joined and connected at both ends of the direction), the band members 30 and 40 are formed into an annular shape. Thereby, it becomes the diaper 1 of the wearing condition in which the trunk periphery opening 1HB and a pair of leg periphery opening 1HL as shown in FIG. 1 were formed.

(Absorbent body 10)
The absorptive main body 10 has a function of absorbing excrement such as urine, and has a substantially rectangular shape in plan view as shown in FIGS. 2 and 4. Located in the center of the direction. The absorptive main body 10 comprises an absorptive core 11, a surface sheet member 13 that covers the absorptive core 11 from the skin side, and an absorptive main body 10 that covers the absorptive core 11 from the non-skin side. A back sheet member 15.

  The absorbent core 11 is a member formed by laminating liquid absorbent materials, and can absorb excrement such as urine. As the liquid absorbent material, for example, liquid absorbent fibers such as pulp fibers can be used. In addition, the absorptive core 11 may contain, for example, a superabsorbent polymer as a liquid absorptive granule, or contains a liquid absorptive material other than a liquid absorptive fiber and a liquid absorptive granule. Also good. Moreover, the absorptive core 11 may be coat | covered with liquid permeable sheets (not shown), such as tissue paper.

  The absorbent core 11 of the present embodiment has a front end 11a that is an upper end in the vertical direction in FIGS. 2 and 4 and a rear end 11b that is a lower end in the vertical direction in FIG. And between the front side edge part 11a and the rear side edge part 11b, it has the narrow part 11c whose width | variety of the left-right direction is narrower than the front side edge part 11a and the rear side edge part 11b. Thereby, the absorptive core 11 is comprised so that it may become a planar view substantially hourglass shape as shown in FIG.2 and FIG.4.

  The surface sheet member 13 is a sheet-like member that covers the absorbent core 11 from the skin side, and is, for example, a liquid-permeable nonwoven fabric having a larger planar size than the absorbent core 11. Further, the back sheet member 15 is a sheet-like member that covers the absorbent core 11 from the non-skin side, and is a planar sheet that is larger than the absorbent core 11, and an example thereof is liquid such as polyethylene or polypropylene. A sheet having a two-layer structure in which a permeable leak-proof sheet 15a and an exterior sheet 15b such as a nonwoven fabric are bonded to each other can be used.

  In the diaper 1, as shown in FIG. 4, so-called three-dimensional gathers LSG and leg gathers LG are formed by the exterior sheet 15b. The three-dimensional gather LSG is a leak-proof wall portion provided upright at each end in the left-right direction of the top sheet member 13, while the leg-hole gather LG is formed in the leg-openings 1 HL and 1 HL of the diaper 1. It is a leg-around elastic part to be formed. The exterior sheet 15b has portions 15bf extending in the left-right direction from both sides in the left-right direction of the leak-proof sheet 15a, and this portion 15bf is formed in the left-right direction with the end in the left-right direction of the absorbent main body 10 being the folded position. The leg elastic member 17 such as rubber thread and the leg auxiliary elastic member 19 are fixed in the state of being extended in the vertical direction in the vicinity of the same folding position. The above leg circumference gathers LG are formed. In addition, the leg periphery auxiliary | assistant elastic member 19 is not necessarily required, and the leg periphery gathers LG may be formed only by the leg periphery elastic member 17. FIG.

  The folded portion 15bf further extends toward the center in the left-right direction, and is joined to the surface sheet member 13 at both ends in the up-down direction so as to cover the end in the left-right direction of the surface sheet member 13. . Further, the portion 15bf is folded back to the outer sides in the left-right direction, and an LSG elastic member 18 such as rubber thread is fixed in the state of being extended in the up-down direction along the up-down direction. When the LSG elastic member 18 contracts in the vertical direction, the absorbent main body 10 is bent in the vertical direction so that the surface sheet member 13 side becomes the inner peripheral side. And when the absorptive main body 10 is bent, the tip of the portion 15bf contracts in the vertical direction by the contraction force applied from the LSG elastic member 18 and stands up from the surface sheet member 13 to function as a three-dimensional gather LSG.

  In some cases, a liquid permeable material such as tissue paper is used as a second sheet between the top sheet member 13 and the absorbent core 11 or between the back sheet member 15 and the absorbent core 11 (see FIG. 3). A sheet may be interposed.

  A predetermined pattern is provided on the non-skin side surface of the leak-proof sheet 15 a of the absorbent main body 10. In the example of FIG. 4, a panda character (main graphics 101 and 102 to be described later) is printed as an example of a symbol. The symbol is provided so as to be visible from the non-skin side (that is, the outside of the diaper 1) through the exterior sheet 15b. In addition, in the top view of FIG. 4, it is drawn so that the said figure (main graphics 101,102) can also be visually recognized from the skin side (inner side of the diaper 1) of the absorptive main body 10 for description. Hereinafter, the printed pattern is also referred to as “graphic”. Details of the size and arrangement of the graphic will be described later.

  On the other hand, an indicator 60 is provided on the skin side surface of the leak-proof sheet 15a of the absorbent main body 10 and serves as an index for notifying the user of the diaper 1 (for example, an infant's guardian) the amount of absorption of liquid such as urine. The indicator 60 is shown by the area | region enclosed with the dotted line of FIG. 4, and is formed in strip | belt shape along the up-down direction (longitudinal direction of an absorptive main body) in the center part of the left-right direction. The indicator 60 is formed of a substance (ink) that changes color when it comes into contact with moisture. When the urine is worn by a wearer such as an infant wearing the diaper 1, the absorbent core 11 absorbs the indicator 60. The colored urine comes into contact with the indicator 60 and the color changes. Therefore, the user (the guardian of the infant) can easily grasp the replacement time of the diaper 1 by visually recognizing the change in the color of the indicator 60 from the outside of the diaper 1.

(Strip members 30, 40)
Each of the front band member 30 and the rear band member 40 is a sheet member having a substantially rectangular shape in a plan view made of a flexible sheet such as a nonwoven fabric (see FIG. 2).

  As shown in FIG. 3, the front side band member 30 is formed by joining two nonwoven fabrics 31 and 32 in the thickness direction. Between the two nonwoven fabrics 31, 32, a plurality of waistline elastic members 35, 35, etc., such as rubber thread, are arranged along the left-right direction. The waistline elastic members 35, 35... Are joined and fixed to the nonwoven fabrics 31 and 32 while being stretched in the left-right direction while being inserted side by side in the up-down direction with an interval in the up-down direction. Thereby, the front side belt member 30 can be stretched in the left-right direction. In addition, the nonwoven fabrics 31 and 32 are mutually joined via the strip | belt member junction part 37 formed with adhesive agents, such as a hot-melt-type adhesive agent. The band member joining portion 37 is formed, for example, in the range of the band member joining portions 37a and 37b indicated by the hatched portions in FIG. 2, and the waistline elastic member 35 is joined and fixed by the band member joining portions 37a and 37b. The member 30 is given elasticity in the left-right direction. However, the range and size in which the band member joint portion 37 is formed are not limited to this.

  In the present embodiment, at least a part of the waistline elastic member 35 has a discontinuous portion at the center in the left-right direction. The discontinuous part of the waistline elastic member 35 is formed by cutting the waistline elastic member 35 at a predetermined position in the center part in the left-right direction in the manufacturing process of the diaper 1. Specifically, the waistline elastic member 35 is cut in a region between the band member joint portions 37b and 37b formed as a pair on both sides in the left-right direction. Then, the waistline elastic member 35 starts contracting from the cut portion (cut end) toward the band member joint portions 37b on both sides in the left-right direction, and contracts at the position of the inner end in the left-right direction of the band member joint portions 37b. Stop. This operation is also called “cutback” of the elastic member. In the present embodiment, the waistline elastic member 35 is not adhered in the region between the band member joint portions 37b, 37b in the left-right direction (or because it is adhered with a weak adhesive force that does not cause expansion / contraction force). May be) Therefore, when the waistline elastic member 35 cuts back, the nonwoven fabrics 31 and 32 constituting the front side belt member 30 do not contract, and only the waistline elastic member 35 contracts toward both sides in the left-right direction. In other words, the waistline elastic member 35 is displaced relative to the front band member 30. Thereby, the discontinuous part of the waistline elastic member 35 is formed in the center part in the left-right direction on the front side (belly side) of the diaper 1. In the discontinuous part, the contraction force in the left-right direction hardly acts on the absorbent main body 10 (absorbent core 11), and the absorbent main body 10 (absorbent core 11) is easily widened in the left-right direction. Side leakage or the like can be effectively suppressed.

  Moreover, the non-skin-side nonwoven fabric 32 protrudes above the upper end in the longitudinal direction of the skin-side nonwoven fabric 31 on the upper side in the up-down direction of the front band member 30 (the waistline opening side), and the protruding portion is folded back to the skin side. Thus, a front folded portion 32f is formed, and the front folded portion 32f is bonded and fixed to the skin side of the nonwoven fabric 31 (see FIG. 3). Thereby, the upper end 30ea of the front belt member 30 is covered by the front folded portion 32f, and the edge of the upper end 30ea is less likely to bite into the wearer's skin (abdominal waistline) when the diaper 1 is worn, resulting in discomfort during wearing. It can be made difficult to occur.

  The front belt member 30 is joined to the front upper end portion (the end portion on the non-skin side and the waistline opening side in FIG. 3) of the absorbent main body 10 via the front body joint portion 51. The front main body joint 51 is formed using a joining means such as welding or adhesion. In this embodiment, the front main body joint 51 is formed using an adhesive such as a hot melt adhesive.

  The rear band member 40 has a structure substantially similar to that of the front band member 30. That is, the rear side band member 40 is formed by joining the nonwoven fabrics 41 and 42 in the thickness direction so as to overlap each other, and between the thickness directions of the nonwoven fabrics 41 and 42, the band member joining portion 47 (the band member in FIG. 2). A plurality of waistline elastic members 45, 45, such as rubber thread, are joined and fixed through the joint portions 47a and 47b) in a state where they are extended in the left-right direction. Thereby, the back-and-forth belt member 40 is provided with stretchability in the left-right direction. Further, at least a part of the waistline elastic member 45 is cut at the center in the left-right direction and cut back in the same manner as the waistline elastic member 35 to form a discontinuous portion. Therefore, even in the rear (back side) discontinuous portion, the contraction force in the left-right direction is less likely to act on the absorbent main body 10 (absorbent core 11), and the absorbent main body 10 (absorbent core 11) is laterally Therefore, the lateral leakage of excrement can be effectively suppressed.

  Moreover, the non-skin-side nonwoven fabric 42 protrudes above the upper end in the vertical direction of the skin-side nonwoven fabric 41 on the upper side in the vertical direction of the rear band member 40 (the waistline opening side), and the protruding portion is folded back to the skin side. Thus, the rear folded portion 42f is formed.

  The rear band member 40 is joined to the rear upper end portion of the absorbent main body 10 (the end portion on the non-skin side and the waistline opening side in FIG. 3) via the rear main body joint portion 52.

In addition, in FIG. 3, the sheet | seat member 38 which covers the front side upper end 10ea of the absorptive main body 10 and the lower end 32feb of the front side folding | returning part 32f from the skin side is provided. The sheet member 38 makes it difficult for the edges of the front upper end 10ea and the lower end 32feb to bite into the wearer's skin when the diaper 1 is worn, making it difficult to cause discomfort during wearing. Similarly, the sheet | seat member 48 which covers the back side upper end 10eb of the absorptive main body 10 and the lower end 42feb of the back side folding | returning part 42f from the skin side is provided. The sheet member 48 makes it difficult for the edges of the rear upper end 10eb and the lower end 42feb to bite into the wearer's skin when the diaper 1 is worn, making it difficult to cause discomfort during wearing. However, in the diaper 1, the sheet members 38 and 48 are not necessarily provided.

<Description of graphic>
The graphic provided on the non-skin side surface of the leakproof sheet 15a of the absorbent main body 10 will be described. In the manufacturing process of the diaper 1, the graphic is formed by printing on the leak-proof sheet 15a using a general printing apparatus such as an ink jet printer.

  Various graphics such as illustrations, photographs, patterns, characters, and the like can be formed on the non-skin side surface of the leak-proof sheet 15a. That is, it is possible to print various designs with respect to shape, color, size, arrangement, and the like. In the example of FIG. 4, a panda character is printed, but other graphics (for example, a pattern or the like) may be printed in addition to the character.

  In the present embodiment, among the graphics printed on the non-skin side surface of the leak-proof sheet 15a, a graphic that satisfies a predetermined condition is referred to as a “main graphic”. Specifically, the “main graphic” is a graphic printed on the non-skin side surface of the leak-proof sheet 15a, and at least a front side surface or a rear side surface in a state where the absorbent main body 10 is extended in the vertical direction and the horizontal direction. A graphic printed on an area of 40% or more of the area on one side. The “front side surface” refers to a surface located on the front side when the absorbent main body 10 is folded in two at the folding position C10. In FIG. Is a surface located on the ventral side. Similarly, the “rear side surface” is a surface located on the rear side when the absorbent main body 10 is folded in two at the folding position C10. In FIG. It is a surface located on the back side from C10.

  In the example of FIG. 4, a front main graphic 101 made of a panda character having a balloon is formed on the front side surface of the absorbent main body 10 (leakproof sheet 15 a). On the other hand, a rear main graphic 102 made of a parent-child panda character is formed on the rear side surface of the absorbent main body 10 (leak-proof sheet 15a). However, the main graphic is not necessarily formed on both the front side surface and the rear side surface, and the main graphic may be formed only on one side surface (preferably the rear side surface).

  Such a main graphic occupies an area of 40% or more of the front side surface or the rear side surface of the absorbent main body 10 and is the most noticeable graphic when the diaper 1 is worn, so that it is easy for infants and their guardians to recognize. It is desirable to have a character design. In order to make the relationship with the diaper 1 easier to recognize, it is more desirable that the main graphic is the same character design as the character drawn on the package when the diaper 1 is distributed in the market.

  In addition, the main graphic may be one in which a plurality of symbols are gathered to form a group of symbols. For example, the front main graphic 101 shown in FIG. 4 is a pattern in which a child panda riding a cloud has two balloons, but the “cloud”, “child panda”, and “balloon” are surrounded by a continuous line. Forming a closed area. In such a case, not only the character “child panda” but also “clouds” and “balloons” are components of the main graphic, and the combined area of all the components is 40% or more of the front side of the absorbent main body 10. Any size is acceptable. For example, when a background, characters, or the like are formed on a certain character, these elements are grouped to form a main graphic. Note that the outline of the main graphic does not necessarily have to be a closed area, and a part of the outline may be interrupted. For example, in the front main graphic 101 of FIG. 4, even if the outline of a part of “cloud” is interrupted, the user can recognize that it is a group of symbols at a glance. If present, the “cloud” is also a component of the main graphic.

  Also, the rear main graphic 102 shown in FIG. 4 is a pattern in which a parent panda and a child panda are arranged side by side. In this case, the “parent panda” and the “child panda” form a closed region surrounded by a continuous line, and the main graphic is composed of two characters. And the area which put together the said 2 body character should just be a magnitude | size of 40% or more of the back side surface of the absorptive main body 10. FIG. When a plurality of characters (pandas in FIG. 4) are included as components of the main graphic like the rear main graphic 102, the plurality of characters are arranged in the left-right direction (the width direction of the absorbent main body 10). It is desirable that they are arranged side by side. Even if a plurality of characters are arranged at positions separated from each other, if the plurality of characters are a group of symbols, the plurality of characters constitute the main graphic. For example, in the rear main graphic 102, it is clear that a “parent panda” and a “child panda” are a series of “parent panda”. Therefore, even if the “parent panda” and the “child panda” are arranged apart from each other, the two characters constitute the rear main graphic 102.

  Here, an example of a method for calculating the ratio (%) of the area of the main graphic to the front side surface (or rear side surface) of the absorbent main body 10 will be described. First, a diaper which is an area calculation target is elongated in the vertical direction and the horizontal direction, and the front side surface and the rear side surface of the absorbent main body 10 are imaged using a commercially available camera. Then, the captured image is read by the scanner, and read data is acquired. This read data is data in which pixel data corresponding to the reading resolution of the scanner is arranged two-dimensionally. Each pixel data has a multi-stage density (print density) for each part of the absorbent main body 10 and the main graphic. This is indicated by a tone value (hereinafter, read gradation value). It is assumed that the larger the reading gradation value indicated by the pixel data, the darker the printing density, and the smaller the reading gradation value, the lighter the printing density. Note that the read gradation value indicated by the pixel data may be represented by, for example, luminance or L * value (brightness).

  Next, the edge extraction process of the main graphic is performed on the read data. In the edge extraction process, for example, a known filter such as a Laplacian filter or a sobel filter is applied to extract and binarize pixels that form the contour of the main graphic. As a result, the gradation value of the pixel forming the contour of the main graphic is represented by the maximum gradation (255), and the gradation value of the other pixels is represented by the minimum gradation (0). As described above, since the main graphic is basically a closed region surrounded by continuous lines, the area of the main graphic is calculated by calculating the area of the region surrounded by the contour pixels extracted in the read data. The area can be measured accurately. In addition, when the outline of the main graphic is interrupted, it is preferable to calculate the area of the main graphic by forming and adding a virtual outline on the read data. Similarly, by measuring the area of the front side surface (rear side surface) of the absorbent main body 10 from the read data, it is possible to calculate the ratio (%) of the area of the main graphic to the front side surface (rear side surface). Become. Of course, the ratio (%) of the area of the main graphic may be calculated by other methods.

<Main graphic layout>
In the diaper 1, by adjusting the visibility of the main graphics 101, 102 provided on the non-skin side of the absorbent main body 10, each member constituting the diaper 1, particularly the front band member 30 and the rear band member 40 is sufficient. It is possible to make it easy for the user to understand that the strength is high. Hereinafter, a specific arrangement of the main graphic will be described. FIG. 5A is a diagram for explaining the arrangement of the front main graphic 101 on the front side surface of the diaper 1. FIG. 5B is a diagram illustrating the arrangement of the rear main graphic 102 on the rear side of the diaper 1. 5A and 5B show a state (extended state) in which the diaper 1 formed in a pants shape is extended in the vertical direction and the horizontal direction. FIG. 6 is a diagram showing how an infant wearing the diaper 1 goes up and down. Drawing 7 is a figure explaining the section state of diaper 1 of a pants type form.

  As shown in FIG. 5A, a part of the front side surface of the absorbent main body 10 overlaps with the front band member 30 on the upper side in the vertical direction (the trunk opening side). On the front side surface of the absorbent main body 10, a portion that overlaps with the front belt member 30 is a front overlap portion 10 fu and a portion that does not overlap is a front non-overlap portion 10 fd. Further, as shown in FIG. 5B, a part of the rear side surface of the absorbent main body 10 overlaps with the rear band member 40 on the upper side in the vertical direction (the waistline opening side). On the rear side surface of the absorbent main body 10, a portion overlapping with the rear band member 40 is defined as a rear overlapping portion 10bu, and a portion not overlapping is defined as a rear non-overlapping portion 10bd.

  In the present embodiment, the front main graphic 101 is arranged so that the area of the portion where the front main graphic 101 and the front band member 30 overlap is 50% or more of the area of the front main graphic 101. In other words, 50% or more of the front main graphic 101 is arranged in the front overlap portion 10fu. Similarly, the area of the portion where the rear main graphic 102 and the rear band member 40 overlap is 50% or more of the area of the rear main graphic 102, and the area of 50% or more of the rear main graphic 102 is 50% or more. It arrange | positions at the rear side duplication part 10bu.

  In the front overlapping portion 10fu and the rear overlapping portion 10bu, the band members 30 and 40 are arranged on the non-skin side of the main graphics 101 and 102 in an overlapping manner. That is, in this region, a plurality of non-woven fabrics (15b, 31, 32, 41, 42, etc.) are laminated and arranged on the non-skin side of the main graphics 101, 102 in the thickness direction. When such a diaper 1 is viewed from the outside, in the region where the main graphics 101, 102 and the band members 30, 40 overlap, the main graphics 101, 102 are visually recognized through the band members 30, 40. It will be. Therefore, the visibility of the main graphics 101 and 102 is reduced in the region where the band members 30 and 40 overlap.

  Specifically, in the area where the main graphics 101 and 102 and the band members 30 and 40 overlap, the color of the main graphics 101 and 102 appears light or the outline appears blurred. In this way, by duplicating the visibility of the main graphics 101, 102 by overlapping with the belt members 30, 40, the presence of the belt members 30, 40 can be firmly established for the user (parents of infants, etc.). Can be recognized. And the visibility of the main graphics 101 and 102 in the area | region which overlaps with the strip members 30 and 40 falls, so that the thickness of the strip members 30 and 40 becomes easy to be recognized, and a user of the strip members 30 and 40 becomes easy. It is possible to suppress anxiety about strength.

  In addition, in order to clarify the degree of reduction in the visibility of the main graphics 101 and 102, the main graphics 101 and 102 have both an area that overlaps with the band members 30 and 40 and an area that does not overlap, respectively. It is desirable that it be formed in the region. That is, it is desirable that the front main graphic 101 is formed across the boundary between the front overlapping portion 10fu and the front non-overlapping portion 10fd (see FIG. 5A). Similarly, the rear main graphic 102 is desirably formed across the boundary between the rear overlapping portion 10bu and the rear non-overlapping portion 10bd (see FIG. 5B).

  With such a configuration, the main graphics 101 and 102 are clearly visible in an area that does not overlap with the band members 30 and 40, whereas in the area that overlaps with the band members 30 and 40, It becomes clear that the visibility is lowered. That is, as shown in FIG. 1 and FIG. 5, the difference in visibility between the portion of the front main graphic 101 that overlaps the front band member 30 and the portion that does not overlap is clear, and the thickness of the front band member 30 is reduced. It becomes easier to recognize.

  In the diaper 1, at least a part of the main graphics 101, 102 does not overlap with the band member joints 37, 47. For example, in FIG. 5A, the front main graphic 101 has a portion that does not overlap with any of the band member joint portions 37a and 37b. When the front belt member 30 contracts in the left-right direction due to the stretching force of the waistline elastic member 35 when the diaper 1 is worn, the skin-side nonwoven fabric 31 and the non-skin-side nonwoven fabric are not formed in the region where the belt member joint portion 37 is not formed. 32 are not joined to each other, each non-woven fabric shrinks separately and easily floats in the thickness direction. Thus, since the visibility of the front main graphic 101 is further reduced at the portion where the nonwoven fabrics 31 and 32 are lifted in the thickness direction, the user can easily recognize the thickness of the front band member 30. Moreover, when the nonwoven fabric nonwoven fabrics 31 and 32 float in the thickness direction, the three-dimensional effect of the front side belt member 30 is emphasized, and the user can be reminded of a fluffy touch feeling. The same applies to the rear main graphic 102 in FIG. 5B. Accordingly, since at least a part of the main graphics 101 and 102 does not overlap with the band member joint portions 37 and 47, the band members 30 and 40 have a soft touch while having sufficient strength. The user can feel it.

  Moreover, in the diaper 1, the basic weight of the nonwoven fabric which forms the strip members 30 and 40 is larger than the basic weight of the nonwoven fabric which forms the exterior sheet 15b of the absorptive main body 10. Here, “basis weight” refers to the mass per unit area. In general, when the area of the nonwoven fabric is the same, the nonwoven fabric with the larger basis weight tends to have lower light transmittance. Therefore, by increasing the basis weight of the band members 30 and 40 as much as possible (decreasing the light transmittance), the visibility of the portions of the main graphics 101 and 102 that overlap with the band members 30 and 40 can be further reduced. it can.

  For example, in the front side surface of the absorbent main body 10, in the front non-overlapping portion 10fd, the sheet member laminated on the non-skin side of the main graphic 101 is only the exterior sheet 15b. On the other hand, in the front overlap portion 10fu, three sheet members of the exterior sheet 15b, the nonwoven fabric 31, and the nonwoven fabric 32 are laminated on the non-skin side of the front main graphic 101 (see FIG. 7). In such a configuration, by reducing the basis weight of the exterior sheet 15b and increasing the basis weight of the nonwoven fabrics 31 and 32, the front main graphic 101 can be easily seen through the exterior sheet 15b in the front non-overlapping portion 10fd, and the front overlap In the portion 10fu, the front side main member 101 is difficult to see because the front side band member 30 is difficult to see through. Therefore, it is possible to make the user more easily recognize the thickness of the front band member 30. The same applies to the rear band member 40.

  The main graphics 101 and 102 are arranged so that at least a part thereof overlaps with a continuous portion of the waistline elastic members 35 and 45 cut back (that is, a portion on which tension is applied by the waistline elastic members 35 and 45). Yes. In the continuous portion, the waistline elastic members 35 and 45 contract, whereby the band members 35 and 45 contract in the left-right direction, and a plurality of ridges having irregularities in the thickness direction are formed. That is, the surfaces of the band members 30 and 40 are deformed into a bellows shape. Therefore, the visibility of the part which overlaps the area | region in which the wrinkles were formed among the main graphics 101 and 102 falls, and it can make a user recognize the strip | belt members 30 and 40 easily. Further, since the plurality of ridges are formed, the band members 30 and 40 look thicker and the user can feel flexibility.

  Further, in the diaper 1, the front main body joint portion 51 that joins the absorbent main body 10 and the front belt member 30 has a belt-like belt-like joint portion 51a along the vertical direction at the position indicated by the hatched portion in FIG. It is formed by arranging a plurality at a predetermined interval in the left-right direction. The front main body joint 51 and the front main graphic 101 overlap at least in some areas. When the front band member 30 (the waistline elastic member 35) contracts in the left-right direction when the diaper 1 is worn, the portion of the absorbent main body 10 where the band-shaped joint portion 51a is formed contracts with the front band member 30 in the left-right direction. On the other hand, the absorbent main body 10 does not contract in the left-right direction between the two belt-like joint portions 51a adjacent to each other in the left-right direction, and the front band member 30 and the absorbent main body 10 are likely to float in the thickness direction so as to be separated from each other. Become. In the raised area, the visibility of the front main graphic 101 is greatly reduced. Thereby, the thickness of the front side belt member 30 is more easily recognized.

  Similarly, the rear main body joint portion 52 that joins the absorbent main body 10 and the rear belt member 40 has a belt-like belt-like joint portion 52a along the vertical direction as shown by the hatched portion in FIG. 5B. Are formed by arranging a plurality of them at predetermined intervals. The rear main body joint 52 and the rear main graphic 102 overlap at least in a part of the area. Therefore, the rear band member 40 and the absorbent main body 10 are lifted between the two band-shaped joint portions 52a adjacent in the left-right direction, so that the thickness of the rear band member 40 is more easily recognized.

  In the diaper 1, the main graphic may be provided on at least one of the front side surface (abdominal side) and the rear side surface (back side) of the absorbent main body 10. In particular, the rear main graphic is provided on the rear side surface. 102 is preferably provided. This is because there are many occasions where the rear main graphic 102 is visually recognized in a state where the baby is wearing the diaper 1, and the rear main graphic 102 greatly affects the design of the diaper 1. For example, as shown in FIG. 6, when an infant wearing the diaper 1 goes up and down, the rear main graphic 102 is easily visible to the user (guardian) on the rear side covering the buttocks of the infant, Coupled with this, it is easy to create a cute impression.

  And as mentioned above, in the part which overlaps with the rear side belt member 40 (the part arrange | positioned in the rear side overlapping part 10bu) among the rear side main graphics 102, the part which does not overlap with the rear side belt member 40 (rear side) The visibility is reduced as compared with the portion arranged in the non-overlapping portion 10bd). Accordingly, the thickness of the rear band member 40 can be easily recognized at a glance, and even if the wearer (infant) is exercising like a high-high, the user (guardian) can use the rear band member 40. You can watch without worrying about the intensity of the.

  In the diaper 1 of the present embodiment, as shown in FIGS. 5A and 5B, both the front main graphic 101 and the rear main graphic 102 are provided. The front main graphic 101 and the rear main graphic 102 are different in size and arrangement. First, regarding the arrangement of the front and rear main graphics 101, 102, both are arranged such that the center position C101 in the vertical direction of the front main graphic 101 is higher than the center position C102 in the vertical direction of the rear main graphic 102. ing. That is, in FIGS. 5A and 5B, the vertical distance LC101 between the center position C101 of the front main graphic 101 and the folding position C10 is the vertical distance between the center position C102 of the rear main graphic 102 and the folding position C10. It is larger than the directional distance LC102 (LC101> LC102).

  When an infant wears the diaper 1, the front crotch portion (lower portion in the vertical direction) of the absorbent main body 10 is easily contracted in the width direction (left and right direction) by being sandwiched between both legs. Therefore, when the front main graphic 101 is disposed in the vicinity of the crotch part, the absorbent main body 10 contracts, so that the front main graphic 101 also contracts in the width direction and is difficult to be visually recognized. On the other hand, such a problem is unlikely to occur on the rear side of the absorbent main body 10, and the rear main graphic 102 is provided at a low position, so that it is easily visible in a wide range of the wearer's buttocks. Therefore, in the diaper 1, the front main graphic 101 is arranged at a position higher than the rear main graphic 102 in the vertical direction so that each main graphic 101, 102 can be visually recognized in an optimal state when worn. ing.

  Next, with regard to the size of the front and rear main graphics 101 and 102, in the diaper 1, the front main graphic 101 is smaller in size (area) than the rear main graphic 102. 101 is formed. As described above, the rear main graphic 102 is arranged at a position where it can be easily touched by the user every time the infant goes up and down. And it has the function which makes a user recognize the thickness of the rear side belt member 40 easily by reducing the visibility in the area | region which overlaps with the rear side belt member 40. FIG. For this reason, by forming the rear main graphic 102 as large as possible, the visibility of the rear main graphic 102 as a whole is improved, while the portion overlapping with the rear belt member 40 and the portion not overlapping are improved in visibility. It can be made easy to recognize that the difference has arisen.

  In the diaper 1 of the present embodiment, the area of the portion where the front main graphic 101 and the front band member 30 overlap is smaller than the area of the portion where the rear main graphic 102 and the rear band member 40 overlap. (See FIGS. 5A and 5B). Since the front main graphic 101 is arranged at a position where it is difficult for the user to visually recognize when the infant makes high and low, the visibility of the front main graphic 101 due to the overlap with the front band member 30 compared to the rear main graphic 102 is reduced. Confusing. On the other hand, since the rear main graphic 102 is easily noticeable by the user when the infant goes up and down as described above, the larger the overlapping portion with the rear band member 40, the larger the rear main graphic 102 in the overlapping portion. The degree of decrease in the visibility of the is easily noticeable.

  Moreover, in the diaper 1, it is desirable that the thickness (width) of the contour lines of the main graphics 101 and 102 is not less than a predetermined value (for example, 3 mm). In the present embodiment, by partially overlapping the main graphics 101 and 102 with the band members 30 and 40, the visibility in the areas is intentionally reduced. For this reason, if the contour line is too thin, the shape of the main graphic pattern may not be recognized. On the other hand, if the outline is formed with a thickness of 3 mm or more, a plurality of nonwoven fabrics (15b, 31, 32, 41, 42, etc.) laminated on the main graphics 101, 102 are seen through the main line. While recognizing the shapes of the graphics 101 and 102, it becomes easy to understand that the visibility is lowered. The “contour line” refers to a line that forms the outer shape of the graphic with respect to the background (here, the leak-proof sheet 15a that is the printing medium). In the case where the graphic is formed by solid painting (for example, the panda ear portion of FIG. 5A), the entire solid painting portion including the outer edge of the graphic may be considered to be a contour line.

  Further, in the diaper 1, when the main graphics 101, 102 are formed on the absorbent main body 10, the main graphics 101, 102 can be changed by changing the printing conditions in accordance with the area of the absorbent main body 10 (leakproof sheet 15a). The degree of visibility reduction in a part of the area 102 is made clear.

  For example, when the rear main graphic 102 is formed, printing is performed with the rear overlap portion 10bu and the rear non-overlap portion 10bd adjusted to have the same print tone value. Specifically, the average print gradation value of the rear main graphic 102 formed in the region overlapping with the rear band member 40 (rear overlap portion 10bu) and the region not overlapping with the rear band member 40 (rear non-rear side). Printing is performed so that the average of the print gradation values of the rear main graphic 102 formed in the overlapping portion 10bd) is substantially equal. As a result, in the rear main graphic 102, an image in which the density in the portion overlapping the rear band member 40 and the density in the non-overlapping portion are substantially equal is printed. When such a diaper 1 is viewed from the outside, a plurality of non-woven fabrics (15b, 41, 42) are laminated on the rear main graphic 102 in a portion overlapping the rear band member 40 (rear side overlapping portion 10bu). Therefore, the density of the rear main graphic 102 appears to be lighter than the actually printed image. On the other hand, in the portion that does not overlap with the rear band member 40 (rear side non-overlapping portion 10bd), the number of nonwoven fabrics laminated on the rear main graphic 102 is small, so the rear main graphic 102 is actually printed. Appears to be the same density as the image. Therefore, when the user visually recognizes the diaper 1 from the outside, the difference in image density becomes significant between the rear overlapping portion 10bu and the rear non-overlapping portion 10bd, and the rear main graphic 102 is displayed in the rear overlapping portion 10bu. It becomes clear that the visibility of is lowered. The same applies to the front main graphic 101.

  Similarly, when the rear main graphic 102 is formed, the lightness of the rear overlapping portion 10bu and the rear non-overlapping portion 10bd may be substantially equal. For example, for print data for printing the rear main graphic 102, the brightness of the portion formed in the rear overlapping portion 10bu and the brightness of the portion formed in the rear non-overlapping portion 10bd are equal. Make adjustments and print. In this way, the portion of the rear main graphic 102 that overlaps the rear band member 40 (the rear overlapping portion 10bu) and the portion that does not overlap (the rear non-overlapping portion 10bd) have similar brightness. The image is printed. In this case, the rear main graphic 102 looks darker than the actually printed image by seeing a plurality of non-woven fabrics in the rear overlapping portion 10bu, and the rear main graphic 102 is seen in the rear non-overlapping portion 10bd. It looks as bright as the actual printed image. Therefore, when the user visually recognizes the diaper 1 from the outside, a difference in image brightness becomes remarkable between the rear overlapping portion 10bu and the rear non-overlapping portion 10bd, and the rear main graphic 102 is displayed in the rear overlapping portion 10bu. It becomes clear that the visibility of is lowered. The same applies to the front main graphic 101.

  Moreover, in the diaper 1, the design property is improved by adjusting the magnitude | size of the part which overlaps with the front side belt member 30 and the back side belt member 40 among the absorptive main bodies 10, respectively. In the example of FIG. 7, the height in the vertical direction of the rear upper end 10eb of the absorbent main body 10 is arranged at a position higher than the height in the vertical direction of the front upper end 10ea. In other words, in the vertical direction, the distance between the front upper end 10ea of the absorbent main body 10 and the folding position C10 is larger than the distance between the rear upper end 10eb and the folding position C10. The area of the side surface is larger than the area of the front side surface. In this way, a large printable area can be provided on the rear side surface, and the rear main graphic 102 can be more easily formed. Thereby, design property can be improved as the diaper 1 whole.

  Further, contrary to the case of FIG. 7, the height in the vertical direction of the rear upper end 10eb of the absorbent main body 10 is the same as the height in the vertical direction of the front upper end 10ea or the height in the vertical direction of the front upper end 10ea. May be arranged at a lower position. In this case, the area of the front side surface of the absorbent main body 10 is increased, and the printable area on the front side surface is increased. The area on the crotch side (the lower side in the up-down direction) on the front side surface is sandwiched between the wearer's legs when the diaper 1 is worn, making it difficult to visually recognize the graphic. Therefore, on the front side surface of the absorbent main body 10, by providing a wide area where the front main graphic 101 can be formed on the waist opening side (upward in the vertical direction), the visibility of the front main graphic 101 is improved when the diaper 1 is worn. It is possible to suppress the deterioration and improve the design of the diaper 1.

  Further, as shown in FIG. 7, the length of the indicator 60 provided on the front side surface of the absorbent main body 10 is longer than the length of the indicator 60 provided on the rear side surface of the absorbent main body 10. In the diaper 1, the rear main graphic 102 is easily formed larger than the front main graphic 101. Therefore, when the indicator 60 is arranged longer on the rear side, an overlapping portion between the rear main graphic 102 and the indicator 60 is generated. Easy to grow. In this case, urination is performed when the diaper 1 is worn, and when the color of the indicator 60 changes, the visibility of the rear main graphic 102 may deteriorate at a portion overlapping the indicator 60. In particular, when the wearer (infant) is in a high-and-high state as shown in FIG. 6, the deterioration of the visibility due to the indicator 60 is easily noticeable, and the user recognizes the thickness of the rear band member 40. There is a risk that the function of the rear main graphic 102 will be damaged. That is, the visibility of the rear main graphic 102 may be unnecessarily deteriorated. Therefore, in the diaper 1, the length of the indicator 60 on the rear side surface of the absorbent main body 10 is made shorter than the length of the indicator 60 on the rear side surface. As a result, it is difficult for the rear main graphic 102 and the indicator 60 to overlap, and the visibility of the rear main graphic 102 is prevented from being unnecessarily deteriorated.

  In the diaper 1, the area of the overlapping portion between the front main graphic 101 and the indicator 60 is larger than the area of the overlapping portion between the rear main graphic 102 and the indicator 60. As described above, when the overlapping area between the rear main graphic 102 and the indicator 60 is increased, unnecessary visibility deterioration is easily noticeable. On the other hand, the front main graphic 101 is easily contracted in the left-right direction by being sandwiched between both legs of the wearer when the diaper 1 is worn, and the front main graphic 101 is difficult to be visually recognized by the user when the infant goes up and down. Placed in position. Therefore, compared with the rear main graphic 102, the influence of the deterioration in visibility is small. That is, even if the overlapping area between the front main graphic 101 and the indicator 60 becomes large, a problem hardly occurs. With such a configuration, the user can easily recognize the difference in the visibility of the main graphics 101 and 102 between the area overlapping the band members 30 and 40 and the area not overlapping. Therefore, the thickness of the band members 30 and 40 can be recognized by the user based on the difference in visibility between the main graphics 101 and 102.

  The indicator 60 may be provided only on the front side surface of the absorbent main body 10 and not on the rear side surface. In this way, the area of the overlap between the indicator 60 and the rear main graphic 102 can be minimized, and even if the color of the indicator 60 changes due to urination, the rear main graphic 102 It becomes easy to suppress the deterioration of unnecessary visibility.

  Furthermore, the indicator 60 may be arranged so that the rear main graphic 102 and the indicator 60 do not overlap. If the rear main graphic 102 and the indicator 60 do not overlap, even if the color of the indicator 60 changes due to urination, the visibility of the rear main graphic 102 is unlikely to be affected. It becomes easier to suppress the deterioration of unnecessary visibility of the graphic 102.

=== 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, the material of the exterior sheet 15b, the front belt member 30, and the rear belt member 40 is a non-woven fabric, but is not limited to any non-woven fabric. For example, a woven fabric or a sheet member other than the woven fabric may be used. Incidentally, the exterior sheet 15b may be omitted, and in that case, the leak-proof sheet 15a forms the exterior of the absorbent main body 10.

  In the above-described embodiment, the rubber thread is exemplified as the waistline elastic member 35, but the invention is not limited thereto. For example, a belt-like rubber may be used as the waistline elastic member 35, or a belt-like nonwoven fabric having stretchability or a belt-like resin film having stretchability may be used.

1 diapers (absorbent articles),
1HB waist opening, 1HL leg opening,
10 Absorbent body,
10ea front upper edge, 10eb rear upper edge,
10fu front overlapping part, 10fd front non-overlapping part,
10bu rear overlapping part, 10bd rear non-overlapping part,
11 Absorbent core,
11a front end, 11b rear end, 11c constriction,
13 Surface sheet member,
15 Back sheet member,
15a leakage prevention sheet, 15b exterior sheet, 15bf part,
17 leg elastic member, 18 LSG elastic member, 19 leg auxiliary elastic member,
30 front band member,
30ea upper end, 30ew side edge joint,
31 non-woven fabric, 32 non-woven fabric, 32f front folded portion, 32feb lower end,
35 waistline elastic member, 37 band member joint part, 37a, 37b band member joint part,
38 sheet member,
40 rear belt member,
40ea upper end, 40ew side edge joint,
41 non-woven fabric, 42 non-woven fabric, 42f rear folded portion, 42feb lower end,
45 waistline elastic member, 47 band member joint part, 47a, 47b band member joint part,
48 sheet members,
51 front body joint, 51a strip joint,
52 rear side body joint part, 52b belt-like joint part,
60 indicator,
101 Front main graphic,
102 Rear main graphic,
C10 folding position,
LG Leg gathers,
LSG Three-dimensional gather (leakage barrier)

Claims (18)

Having a vertical direction, a horizontal direction and a front-rear direction intersecting each other;
An absorbent main body provided along the vertical direction and bent back and forth at the crotch,
A front belt member provided along the left-right direction and joined to the front upper end in the vertical direction of the absorbent main body on the front side;
A rear belt member provided along the left-right direction as a separate body from the front belt member, and joined to the rear upper end in the vertical direction of the absorbent main body on the rear side;
Have
In the left-right direction, an absorbent article in which both ends of the front band member and both ends of the rear band member are joined to each other,
The absorbent main body includes a liquid-absorbent absorbent core and a liquid-impermeable leak-proof sheet disposed on the non-skin side of the absorbent core,
On at least one side of the front side and the rear side, a main graphic is provided on the non-skin side surface of the leak-proof sheet,
In the state where the absorbent main body is extended in the vertical direction and the horizontal direction, the area of the main graphic is 40% or more of the area of the non-skin side surface on the one side, and the band on the one side The area of the portion where the member and the main graphic overlap is 50% or more of the area of the main graphic.
An absorbent article characterized by the above. The absorbent article according to claim 1,
The main graphic is
The absorbent main body and the band member on the one side overlap each other, and the region between the absorbent main body and the band member on the one side does not overlap is arranged across the boundary. Absorbent article characterized by. The absorbent article according to claim 1 or 2,
The front belt member and the rear belt member each have a skin-side nonwoven fabric and a non-skin-side nonwoven fabric,
The skin-side non-woven fabric and the non-skin-side non-woven fabric are joined by being overlapped in the thickness direction via a band member joining portion,
At least one part of the said main graphic does not overlap with the area | region in which the said band member junction part is provided, The absorbent article characterized by the above-mentioned. It is an absorptive article given in any 1 paragraph of Claims 1-3,
The absorbent main body has an exterior sheet on the non-skin side of the leak-proof sheet,
The basis weight of the nonwoven fabric forming the front side band member and the rear side band member is
An absorbent article characterized by being larger than the basis weight of the nonwoven fabric forming the exterior sheet. It is an absorptive article given in any 1 paragraph of Claims 1-4,
The front belt member and the rear belt member each have a waist elastic member that expands and contracts in the left-right direction,
At least a part of the main graphic overlaps with a region where tension is applied by the waistline elastic member. It is an absorptive article given in any 1 paragraph of Claims 1-5,
The front belt member and the rear belt member are joined to the absorbent main body through a main body joint portion in which a plurality of belt-like joint portions along the vertical direction are arranged at predetermined intervals in the left-right direction. ,
At least one part of the said main graphic overlaps with the area | region in which the said main body junction part is provided, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 6,
An absorbent article, wherein a rear main graphic is provided on the rear side of the absorbent main body. It is an absorptive article given in any 1 paragraph of Claims 1-7,
A front main graphic is provided on the front side of the absorbent main body, and a rear main graphic is provided on the rear side of the absorbent main body,
The absorbent article according to claim 1, wherein a center position of the front main graphic is higher than a center position of the rear main graphic in the vertical direction. The absorbent article according to claim 8, wherein
The absorbent article according to claim 1, wherein an area of the front main graphic is smaller than an area of the rear main graphic. The absorbent article according to claim 8 or 9, wherein
The absorbent article, wherein an area of a portion where the front main graphic and the front band member overlap is smaller than an area of a portion where the rear main graphic and the rear band member overlap. It is an absorptive article given in any 1 paragraph of Claims 1-10,
An average print gradation value of the main graphic in a portion where the main graphic and the one side surface of the absorbent main body overlap;
An absorbent article, wherein an average of the print gradation values of the main graphic is equal in a portion where the main graphic and the one side surface of the absorbent main body do not overlap. The absorbent article according to any one of claims 1 to 11,
The thickness of the outline which forms the external shape of the said main graphic is 3 mm or more, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 12,
The said main graphic is the same design as the character displayed on the product package of the said absorbent article, The absorbent article characterized by the above-mentioned. It is an absorptive article given in any 1 paragraph of Claims 1-13,
In the up-down direction, the position of the rear upper end of the absorbent main body is higher than the position of the front upper end of the absorbent main body. The absorbent article according to any one of claims 1 to 14,
The absorptive main body is provided with an indicator that changes color when it comes into contact with moisture, along the vertical direction,
In the up-down direction, the length of the indicator disposed on the front side of the absorbent main body is longer than the length of the indicator disposed on the rear side of the absorbent main body. Goods. The absorbent article according to claim 15,
A front main graphic is provided on the front side of the absorbent main body, and a rear main graphic is provided on the rear side of the absorbent main body,
The absorbent article, wherein an area of a portion where the front main graphic and the indicator overlap is larger than an area of a portion where the rear main graphic and the indicator overlap. The absorbent article according to claim 15 or 16,
An absorbent article, wherein the indicator is not disposed on the rear side of the absorbent main body. It is an absorptive article given in any 1 paragraph of Claims 15-16,
The absorbent article, wherein the rear main graphic and the indicator do not overlap.

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