JP2012081066A - Individual package of absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an individual package of an absorptive article which is made compact and facilitates the takeout of the absorptive particle therefrom.SOLUTION: The absorptive article 1 in the individual package 10 includes a longitudinal direction groove part arrangement area B provided with a longitudinal direction groove part 5 and longitudinal direction groove part non-arrangement areas A and C not provided with the longitudinal direction groove part 5 in an article longitudinal direction X. The areas A and C are positioned respectively at the front and the back in the article longitudinal direction X with the area B interposed therebetween and are adjacent to the area B. The absorptive article 1, together with a packaging material 9, is folded in an article width direction Y at first folding lines L1 and L2 extending in the article longitudinal direction X through the longitudinal direction groove part 5, and is further folded in the article longitudinal direction X at second folding lines L3 and L4 extending in a direction Y crossing the first folding lines L1 and L2. On a skin non-abutting surface in the areas A and C of the absorptive article 1, an adhesive part 7 for fixing the absorptive article 1 to clothes is provided so as to be over the first folding lines L1 and L2 in the article width direction Y.

Description

  The present invention relates to an individual package of an absorbent article in which an absorbent article such as a sanitary napkin, a panty liner (origami sheet), an incontinence pad or the like is folded and wrapped with a packaging material, and more particularly, a sanitary napkin or a panty. The present invention relates to an individual package of absorbent articles for women such as liners (corimono sheets).

  Absorbent articles for women such as sanitary napkins are usually on the inside (skin contact surface) that comes into contact with the skin when worn for the purpose of easy portability and hygienic conditions. Thus, they are individually packaged in a state of being folded in the longitudinal direction and are commercially available. For example, in Patent Document 1, a napkin is placed on a developed packaging material, both end portions along the longitudinal direction of the napkin of the packaging material are bent in the napkin width direction together with the napkin, and the packaging material is further removed. In addition, a sanitary napkin individual body is described which is bent in the longitudinal direction of the napkin and fixed to a predetermined portion with an adhesive seal or the like. In the individual package described in Patent Document 1, the packaging material and the napkin are folded in the napkin width direction in the vicinity of the side edge along the longitudinal direction of the napkin in the packaging material and the napkin width than the side edge. The bending start point is a region having a relatively low rigidity because no absorber is present.

  Further, in Patent Document 2, an individual film that is wider than a napkin and has a cut-out portion with four corners cut out is sequentially folded together with the napkin in the napkin width direction and the napkin longitudinal direction. An individual package of sanitary napkins is described. In the individual package described in Patent Document 2, the individual film is folded in the napkin width direction together with the napkin, and then both ends of the individual film in the longitudinal direction of the napkin are fixed by heat fusion. In Patent Document 3, the cover sheet is folded on four folding lines extending in the longitudinal direction of the napkin in a state where the cover sheet is overlapped on the outer surface of the napkin, and further folded in three in the longitudinal direction of the napkin and fixed. An individual package of sanitary napkins is described.

Japanese Patent No. 2789242 Japanese Patent No. 3587616 Japanese Patent Laid-Open No. 10-305059

  The individual packages of absorbent articles described in Patent Documents 1 to 3 are formed by folding the absorbent article together with the packaging material in both the article width direction and the article longitudinal direction, and the conventional article longitudinal direction. Compared to the individual package formed by bending only to the top, further downsizing is achieved and the portability is excellent. However, such an individual package that is bent in a direction crossing each other has a problem that the operation from opening and unfolding the package to taking out the absorbent article is troublesome. In particular, the individual package described in Patent Document 2 is such that the end of the folded individual film is heat-sealed. The operation of peeling off from the surface to be fused is necessary, and the unfolding operation is troublesome. There has not yet been provided an individual package of an absorbent article that is compact and can be easily taken out.

  Accordingly, an object of the present invention is to provide an individual package of an absorbent article that is compact and can be easily taken out.

  The present invention includes a top sheet that forms a skin contact surface, a back sheet that forms a non-skin contact surface, and an absorbent body disposed between both sheets and faces the excretory part of the wearer when worn. A substantially vertically long absorbent article having an excretory part facing part is an individual package of an absorbent article that is folded and wrapped with a packaging material, the absorbent article comprising the top sheet and the absorbent body Have a longitudinal groove portion arrangement region having a longitudinal groove portion and a longitudinal groove non-arrangement region having no longitudinal groove portion in the article longitudinal direction. The longitudinal groove portion arrangement region is located in the excretion portion facing portion, and the longitudinal groove portion non-arrangement region is located in each of the longitudinal direction of the article across the longitudinal groove portion arrangement region, and Adjacent to the longitudinal groove area The absorbent article is folded in the article width direction along a first folding line extending in the longitudinal direction of the article through the longitudinal groove with the packaging material, and further extending in a direction intersecting the first folding line. An adhesive portion that is folded in the longitudinal direction of the article along a two-fold curve and that fixes the absorbent article to the clothes on the non-skin contact surface in the longitudinal groove non-arrangement region of the absorbent article is the first fold. By providing an individual package of absorbent articles that is provided so as to straddle the curve in the article width direction, the above-mentioned problems are solved.

  The individual package of the absorbent article of the present invention is made compact, and when a plurality of the individual packages are integrated and packaged as a single package, the package is easily removed from the package. And can be easily developed after opening.

FIG. 1 is a plan view of an individual package of a sanitary napkin that is an embodiment of a package of absorbent articles according to the present invention. FIG. 2 is a plan view showing the skin contact surface side of the sanitary napkin in the unfolded state of the individual package shown in FIG. FIG. 3 is a plan view showing a state (semi-deployed state) in which the sanitary napkin is folded in the article width direction along the first folding line together with the packaging material from the developed state of the individual package shown in FIG. FIG. 4 is a cross-sectional view schematically showing a cross section taken along line II of the sanitary napkin shown in FIG. FIG. 5 is a plan view showing the non-skin contact surface side of the sanitary napkin shown in FIG. 6 is a perspective view showing a natural state of the sanitary napkin shown in FIG. FIG. 7: is a top view which shows the skin contact surface side of the sanitary napkin in other embodiment of the individual package of the absorbent article of this invention. Fig.8 (a) and FIG.8 (b) are top views which respectively show the non-skin-contacting surface side of the sanitary napkin in other embodiment of the individual packaging of the absorbent article of this invention.

  Hereinafter, an individual package of the absorbent article of the present invention will be described based on a single package of a sanitary napkin which is a preferred embodiment thereof with reference to the drawings. The individual package 10 according to the present embodiment shown in FIG. 1 is folded in the width direction Y along the first folding lines L1 and L2 from the developed state shown in FIG. It is formed by being further folded in the longitudinal direction X along the second folding lines L3 and L4 from the unfolded state, and the napkin 1 is folded together with the packaging material 9 and packaged with the packaging material 9.

  As shown in FIGS. 2 and 4, the napkin 1 in the individual package 10 of the present embodiment includes a top sheet 2 that forms a skin contact surface, a back sheet 3 that forms a non-skin contact surface, and both sheets 2. , 3 is disposed, and has an elongated shape (substantially rectangular shape) in one direction in a plan view as shown in FIG. As shown in FIGS. 2 and 4, the top sheet 2 and the back sheet 3 have dimensions larger than those of the absorbent body 4, extend from both ends in the longitudinal direction of the absorbent body 4, and heat-seal each other at the extended portions. The end seal portion is formed by joining together, and the side flap portion is formed by extending outward from both side edges along the longitudinal direction of the absorbent body 4.

  In the present specification, the skin contact surface is a surface directed toward the wearer's skin when the absorbent article (sanitary napkin) or an absorbent article (sanitary napkin) is worn in the absorbent article, The non-skin contact surface is a surface of the absorbent article (sanitary napkin) or a component thereof directed to the side opposite to the skin side (clothing side) when the absorbent article (sanitary napkin) is worn. The longitudinal direction is a direction along the long side of the absorbent article (sanitary napkin) or its constituent members, and the width direction is a direction orthogonal to the longitudinal direction. In the figure, the direction indicated by reference sign X is the longitudinal direction of the napkin 1 (article longitudinal direction), and the direction indicated by reference sign Y is the width direction of the napkin 1 (article width direction).

  As shown in FIG. 1, the napkin 1 is disposed on the abdomen side of the wearer from the excretory part facing part B disposed opposite to the excretion part (vaginal opening) of the wearer when worn, and the excretion part facing part B when worn. A front portion A and a rear portion C disposed on the back side of the wearer from the excretory portion facing portion B at the time of wearing. The excretory part facing part B is an area sandwiched between two second folding lines L3 and L4 extending in the width direction Y of the napkin 1.

  As shown in FIGS. 2 and 4, the absorbent body 4 has a middle-high portion 42 formed on the excretory part-facing part B that is thicker than the peripheral part and protrudes toward the topsheet 2 side. More specifically, the absorber 4 has a substantially rectangular shape with rounded corners in plan view, and extends from the front part A to the rear part C via the excretory part facing part B. The upper absorbent body 41 has a width narrower than that of the lower absorbent body 40 and is disposed on the skin contact surface side of the central portion in the width direction of the lower absorbent body 40 in the excretory part facing part B. 40 and 41 form the middle-high portion 42. The upper layer absorber 41 has a substantially rectangular shape with rounded corners in plan view, and is arranged on the lower layer absorber 40 with its longitudinal direction coinciding with the longitudinal direction of the lower layer absorber 40. Between the absorbers 40 and 41 and between the absorber 4 and the top sheet 2 and the back sheet 3 may be respectively joined by an adhesive.

  As shown in FIGS. 2 and 4, the napkin 1 includes a longitudinal groove portion arrangement region having a longitudinal groove portion 5 formed by recessing the top sheet 2 and the absorber 4 and extending in the longitudinal direction X. The longitudinal groove portion 5 does not have the longitudinal groove portion non-arrangement region in the longitudinal direction X. In this embodiment, the said longitudinal direction groove part arrangement | positioning area | region is the excretion part opposing part B, and the said longitudinal direction groove part non-arrangement area | region is the front part A and the back part C. In the present embodiment, the longitudinal groove portion non-arrangement region (front portion A, rear portion C) is, as shown in FIG. 2, front and rear in the longitudinal direction X across the longitudinal groove portion placement region (excretion portion facing portion B). It is located in each and adjoins this longitudinal direction groove part arrangement field (excretion part facing part B).

  As shown in FIG. 2, the skin contact surface (skin contact surface 2 a of the topsheet 2) of the excretory part facing portion B of the napkin 1 includes the topsheet 2 and the topsheet 2 in addition to the pair of longitudinal grooves 5 and 5. A pair of width direction grooves 6, 6 are formed, which are formed to be recessed integrally with the absorber 4 and extend in the width direction Y. These four groove portions 5 and 6 are connected to each other at their end portions, whereby a closed ring as shown in FIG. 2 is formed on the skin contact surface of the excretory portion facing portion B of the napkin 1. Yes. The middle-high portion 42 (upper layer absorber 41) described above is surrounded by these four groove portions 5 and 6, and is located in the closed ring.

  Thus, the excretory part facing part B of the napkin 1 is different in thickness on one side (napkin inner side) and the other side (napkin outer side) with the longitudinal groove 5 as a boundary, and the middle-high part 42 The thickness on the inner side of the napkin having the thickness is larger than that on the outer side of the napkin not having this. The thickness ratio (T2 / T1) between the thickness T1 on the inner side of the napkin (see FIG. 4) and the thickness T2 on the outer side of the napkin (see FIG. 4) is preferably 0.1 to 0.9, more preferably 0. .3 to 0.7.

  Each of the groove portions 5 and 6 is linear in a plan view. Here, “linear” means that the shape of the groove is not limited to a straight line in a plan view but includes a curved line, and each line may be a continuous line or a broken line. In addition, the groove portions 5 and 6 have a large number of deep recess portions (relatively deep recess portions, high embossed portions) and shallow recess portions (relative to each other) in a plan view, such as a rectangle, square, rhombus, circle, and cross. May be formed as a continuous line as a whole, or may be formed by intermittently arranging a number of depressions. . “Intermittently” means that the interval between adjacent recesses is 5 mm or more.

  Each of the pair of longitudinal grooves 5 and 5 alternates between a portion relatively close to the virtual straight line and a portion relatively far from the virtual straight line (not shown) that bisects the napkin 1 in the width direction Y. 2 in a plan view as shown in FIG. 2, a plurality of arcuate curves (three in the present embodiment) projecting outward in the width direction Y of the napkin 1 are connected. I am doing. Each of the pair of width direction grooves 6 and 6 has a circular arc shape that protrudes outward in the longitudinal direction X of the napkin 1 in plan view, and the tops of the protrusions are on the virtual straight line (napkin 1 In the width direction Y).

  In the groove portions 5 and 6, the top sheet 2 and the absorber 4 (lower layer absorber 40) are integrated by heat fusion or the like. As described above, the grooves 5 and 6 in which the topsheet 2 and the absorbent body 4 are integrated are formed on the skin contact surface side of the napkin 1, so that the liquid in the planar direction of the absorbent body 4 is diffused. It becomes possible to suppress effectively, and the twist of the absorber 4 can be prevented. The formation of the grooves 5 and 6 is particularly effective for preventing diffusion of excreted body fluid such as menstrual blood and improving adhesion to the body when worn. The groove portions 5 and 6 can be formed in accordance with a conventional method by embossing such as embossing with or without heat, or ultrasonic embossing.

  The width of the groove portions 5 and 6 (the length in the direction orthogonal to the extending direction of each of the groove portions 5 and 6) is preferably 1.5 to 5 mm, and more preferably 2 to 4 mm. Moreover, the depth of the groove parts 5 and 6 (the recessed depth of the part from the non-recessed skin contact surface 2a in the surface sheet 2) is preferably 1 to 5 mm, more preferably 1.5 to 4 mm. is there.

  As shown in FIGS. 4 and 5, the non-skin contact surface (non-skin contact surface 3 b of the back sheet 3) of the napkin 1 is provided with an adhesive portion 7 that fixes the napkin 1 to clothing such as shorts. Yes. The adhesive part 7 is provided in a portion near the excretory part facing part B of each of the substantially whole part of the excretion part facing part B (the longitudinal groove part arrangement area) and the front part A and the rear part C (the longitudinal groove part non-arrangement area). It has been. As shown in FIG. 5, the adhesive portion 7 has a rectangular shape in a plan view, and a plurality of the adhesive portions 7 are formed at predetermined intervals in the longitudinal direction X of the napkin 1 with the longitudinal direction thereof aligned with the width direction Y of the napkin 1. Yes. Each of the plurality of adhesive portions 7 is continuous across the vicinity of both side edges along the longitudinal direction X of the napkin 1, and both end portions in the width direction Y of each adhesive portion 7 are in the longitudinal direction X of the napkin 1. Preferably, it is located within 15 mm from the side edge. The plurality of adhesive portions 7 have the same shape and the same size. The adhesive part 7 is provided by applying a known adhesive.

  As shown in FIG. 5, the adhesive portion 7 is provided so as to straddle the first folding lines L <b> 1 and L <b> 2, which will be described later, in the width direction Y. That is, in the front portion A and the rear portion C (the longitudinal groove portion non-arrangement region) and the excretion portion facing portion B (the longitudinal groove portion arrangement region) in the present embodiment, the first skin, which will be described later, is provided. An adhesive portion 7 is provided which extends over the entire length between the folding lines L1 and L2 and extends outward in the width direction Y of the napkin 1 from each of the first folding lines L1 and L2. When the adhesive portion 7 is in such a positional relationship with respect to the first folding lines L1 and L2 in the longitudinal groove non-arrangement region, the napkin 1 folded in the individual package 10 as described later, Since the unpacked state is as shown in FIG. 2 naturally and promptly after the individual package 10 is opened, the napkin 1 can be easily taken out.

  A wrapping material 9 for wrapping the napkin 1 is detachably adhered to the adhesive portion 7. As shown in FIG. 1, the packaging material 9 has a rectangular shape having a size larger than the outer shape of the napkin 1, and is adhered to the adhesive portion 7 with its longitudinal direction coinciding with the longitudinal direction X of the napkin 1. Yes. As the packaging material 9, for example, a resin film such as polypropylene, low-density polyethylene, or polyvinyl alcohol, a nonwoven fabric, paper, or a composite material in which two or more of these are combined can be used. The adhesive surface of the packaging material 9 with the adhesive portion 7 has been subjected to a known release treatment (such as application of a silicone resin), and by this release treatment, the packaging material 9 adheres to the adhesive portion 7 so as to be peelable. ing.

  The individual package 10 of the napkin 1 according to the present embodiment shown in FIG. 1 is formed by folding the napkin 1 in an unfolded state as shown in FIG. In the individual package 10, the napkin 1 and the packaging material 9 are arranged in the width direction Y of the napkin 1 along a pair of first folding lines L1 and L2 extending in the longitudinal direction X through the longitudinal groove portion 5 from the expanded state shown in FIG. Further, it is bent in the longitudinal direction X of the napkin by a pair of second folding lines L3 and L4 extending in a direction (width direction Y) intersecting (orthogonal) the first folding lines L1 and L2.

  Each of the pair of first folding lines L1 and L2 passes through a part of the longitudinal groove portion 5 (the convex top portion of the convex arcuate curve located at the longitudinal center of the longitudinal groove portion 5). 1 is a straight line extending in the longitudinal direction X. The 1st folding line which concerns on this invention does not need to pass the whole longitudinal direction groove part, and should just pass a part of longitudinal direction groove part like this embodiment.

  The second folding line L3 is a straight line extending in the width direction Y of the napkin 1 through the boundary between the rear portion C (the longitudinal groove portion non-arrangement region) and the excretion portion facing portion B (the longitudinal groove portion arrangement region). The second folding line L4 is a straight line extending in the width direction Y of the napkin 1 through the boundary between the front portion A (the longitudinal groove portion non-arrangement region) and the excretory portion facing portion B.

  In order to obtain the individual package 10, as shown in FIG. 2, in the state where the unfolded packaging material 9 adheres to the adhesive portion 7 of the unfolded napkin 1, first, the napkin 1 and the packaging material 9 together with 2 The first folding lines L1 and L2 of the book are bent in the width direction Y to obtain the semi-deployed state shown in FIG. In this embodiment, among the side edges 9s1 and 9s2 along the longitudinal direction X of the packaging material 9, first, the one side edge 9s1 located on the left side in FIG. 2 is moved along with the napkin 1 along the first folding line L1. Next, the other side edge 9s2 located on the right side in FIG. 2 is bent along the first folding line L2 together with the napkin 1 to the napkin inward side. The other side portion of the packaging material 9 including the other side edge 9s2 that is bent second time is overlaid on the one side portion of the packaging material 9 including the first side edge 9s1 that is bent the first time. The order in which the side edges 9s1, 9s2 of the packaging material 9 are bent is not particularly limited, and may be bent in the order of the other side edge 9s2 and the one side edge 9s1.

  In this way, the napkin 1 is bent in the width direction Y along the first folding lines L1 and L2 so that the entire surface of the skin contact surface 2a is covered with the constituent members (the napkin 1 and the packaging material 9) of the individual package 10. The semi-deployed state as shown in FIG. Thus, in the manufacturing process of the individual package 10, the entire surface of the skin contact surface 2a of the napkin 1 that contacts the skin of the wearer is covered with the constituent members of the individual package 10, so that the skin contact in the individual package state is achieved. Contamination of the contact surface 2a is prevented, and it is hygienic and can give the wearer a clean feeling.

  Thus, in this embodiment, since the starting point of the folding in the longitudinal direction X of the napkin 1 is the first folding lines L1 and L2 that pass through the longitudinal groove portion 5 that is relatively rigid as compared with other parts, Compared to the case where the starting point is the side flap portion having a relatively low rigidity, for example, the napkin 1 can be easily bent, and even if it is not bent with a particularly strong force, it is easy to make a crease (fold) on the napkin 1. Since the side flap portion does not have the absorber 4 and is substantially composed of the top sheet 2 and the back sheet 3, the side flap portion has lower rigidity than the groove portion 5 and is difficult to make a fold. Further, in the present embodiment, the middle and high portions 42 are provided along the longitudinal groove portion 5 in the vicinity of the longitudinal groove portion 5 (preferably a region within 5 mm in the width direction Y from the longitudinal groove portion 5). Since the thickness is different between the inner side and the outer side of the napkin 1 with the groove portion 5 as a boundary, the napkin 1 can be bent with high accuracy and stability at the first folding lines L1 and L2 passing through the longitudinal groove portion 5. Can be implemented. Therefore, according to this embodiment, since the fold extending in the longitudinal direction X along the groove portion 5 is firmly attached to the napkin 1 in the manufacturing process of the individual package 10, the napkin inward side with the fold as a boundary. The inconvenience that the portion bent in the direction of the napkin opens toward the outer side of the napkin hardly occurs, and the bending process can be performed stably. Further, by folding the napkin 1 along the first folding lines L1 and L2 passing through the relatively rigid longitudinal groove 5, when the individual package 10 is opened, the napkin is folded inwardly along the first folding lines L1 and L2. Since the restoring force that stands up to return to the original unfolded state acts strongly on the portion (both sides of the napkin 1), the napkin 1 immediately returns to the unfolded state as shown in FIG. The napkin 1 can be easily taken out.

  On the other hand, in the conventional method of manufacturing a napkin individual package as described in Patent Document 1, the napkin is bent at a portion having a relatively lower rigidity than the groove, and therefore, the inconvenience easily occurs. As described in Document 2, after folding, the folded portion is fixed by a joining means such as heat seal. However, in the individual package obtained by this method, the smooth transition to the unfolded state of the napkin is hindered by the presence of the joining means, so that the unfolding operation is complicated and it is not easy to take out the napkin.

  Next, in the semi-deployed state shown in FIG. 3, the napkin 1 is folded in the longitudinal direction X along the two second folding lines L3 and L4 together with the packaging material 9 to obtain the individual packaging state shown in FIG. In this embodiment, among the front end edge 9a and the rear end edge 9c along the width direction Y of the packaging material 9, first, the rear end edge 9c is skin-contacted surface 2a together with the napkin 1 along the second folding line L3. Next, the front edge 9a is bent along the second folding line L4 along with the napkin 1 to the skin contact surface 2a (excretion part facing part B) side. The front end portion (front portion A of the napkin 1) of the packaging material 9 including the front end edge 9a that is bent second time is the rear end portion (napkin) of the packaging material 9 including the rear end edge 9c that is bent first time. 1 on the rear part C). The order in which the front edge 9a and the rear edge 9c of the packaging material 9 are bent is not particularly limited, and the front edge 9a and the rear edge 9c may be bent in this order.

  Thus, after the napkin 1 is folded in three in the width direction Y and the longitudinal direction X together with the packaging material 9, the front end portion of the packaging material 9 positioned at the outermost layer is folded at the second folding line L4 and faces the front end portion. It fastens to the packaging material 9 to be peeled through a peelable adhesive. In the present embodiment, as shown in FIG. 1, the front end portion is fixed by adhering the fixing tape 8 having the adhesive so as to straddle the front end edge 9 a of the packaging material 9. In the individual package 10, the fastening means 8 is the only means for fixing the members that are folded and face each other, and the individual package 10 includes a conventional package of this type. As described above, there is no joining means such as heat sealing for joining the packaging materials which are folded and face each other. Through the above steps, the individual package 10 of the napkin 1 having a compact form as shown in FIG. 1 is obtained.

  When the napkin 1 in the individual package 10 is used, the fastening tape 8 is peeled off and the individual package 10 is opened. When the individual package 10 is opened in this way, the napkin 1 folded together with the packaging material is folded inwardly at the first folding lines L1 and L2, and the restoring force (good condition) on both sides of the napkin 1 is obtained. 2 is restored to the unfolded state shown in FIG. In particular, in the present embodiment, as described above, the adhesive portion 7 in the front portion A and the rear portion C (the longitudinal groove portion non-arrangement region) is provided so as to straddle the first folding lines L1 and L2 in the width direction Y. Since the adhesive portion 7 is folded in the width direction Y of the napkin 1 together with the packaging material 9, the packaging material 9 is less distorted in the individual package 10, and the packaging material 9 is outward in the napkin width direction. It is in a state where it is always stretched. Therefore, when the fastening tape 8 is peeled off and the individual package 10 is opened, the restoring force of the folded packaging material 9 acts and is folded in combination with the restoring force on both sides of the napkin 1 described above. The napkin 1 is restored naturally and promptly to the unfolded state shown in FIG. After the napkin 1 is in the unfolded state shown in FIG. 2, the packaging material 9 is peeled off from the napkin 1 to expose the adhesive portion 7. And the napkin 1 is fixed to clothes, such as underwear, through the adhesion part 7 according to a conventional method.

  FIG. 6 shows the natural state of the napkin 1 taken out by opening and unpacking the individual package 10. The natural state of the napkin 1 shown in FIG. 6 is substantially the same as the wearing state when the napkin 1 is used while being fixed to clothes. As shown in FIG. 6, the napkin 1 is curved in the natural state (wearing state) before and after the excretory part facing part B (the longitudinal groove part arrangement region) (second folding lines L3 and L4). The overall shape in the longitudinal direction X is concavely curved toward the skin contact surface 2a. Further, in the front part A and the rear part C (the longitudinal groove part non-arrangement region), the front part is located outside in the width direction Y with respect to the fold formed along the first folding lines L1 and L2. Both side portions 1a, 1a along the longitudinal direction X of A and both side portions 1c, 1c along the longitudinal direction X of the rear portion C are slightly raised on the skin contact surface 2a side due to the influence of creases. Further, in the excretory part facing part B, the rigidity is relatively low, starting from the widthwise central part (the central part including the middle and high parts 42 surrounded by the groove parts 5 and 6) having relatively high rigidity. The width direction both side parts 1b and 1b which have have free deformation | transformation according to the body pressure at the time of wear, etc. According to the napkin 1 in which each part acts in this way, it is possible to effectively prevent leakage of body fluid excreted in the excretory part facing part B, in particular, without deteriorating the wearing feeling during wearing. .

  When the formation material of each part in the napkin 1 is demonstrated, the various things conventionally used in the said technical field can be especially used as the surface sheet 2 and the back surface sheet 3 without a restriction | limiting. As the surface sheet 2, for example, liquid permeable sheets such as various nonwoven fabrics and perforated films subjected to a hydrophilic treatment can be used. The back sheet 3 may be liquid-impermeable or liquid-permeable, for example, a resin film that does not have moisture permeability, a resin film that has micropores and moisture permeability, and a nonwoven fabric such as a water-repellent nonwoven fabric, A laminate of the sheet and other sheets can be used.

  As the surface sheet 2, one having an uneven structure is preferable. When the topsheet 2 has a concavo-convex structure, when the napkin 1 is folded along the folding lines L1 to L4, compared to the case where a flat topsheet having substantially no concavoconvex is used, creases are formed. It becomes difficult. The crease can reduce the appearance of the napkin and can also cause the leakage prevention performance to deteriorate. The surface sheet 2 having a concavo-convex structure may be one having a concavo-convex surface on one side and a flat surface having substantially no concavo-convex surface on the other surface, or may be a concavo-convex surface on both sides. The surface sheet 2 having a concavo-convex structure can be obtained by, for example, performing a known embossing process on a flat fiber sheet made of a nonwoven fabric or the like. Examples of the sheet that can be used as the surface sheet 2 having the concavo-convex structure include a sheet described in Japanese Patent Application Laid-Open No. 2005-350836 related to the previous application of the present applicant.

  As materials constituting the absorber 4 (the lower layer absorber 40 and the upper layer absorber 41), various materials conventionally used in the technical field can be used without particular limitation, and examples thereof include wood pulp, synthetic fiber, and the like. A fiber aggregate composed of the above hydrophilic fibers, or a fiber aggregate in which a particulate water-absorbing resin is held can be used. The absorbent body 4 includes a liquid-retaining absorbent core (not shown) made of the fiber assembly and the like, and a liquid-permeable core wrap sheet (not shown) that covers the absorbent core. In this case, the absorbent core and the core wrap sheet may be joined to each other by a joining means such as a hot-melt pressure-sensitive adhesive at a predetermined site. As a core wrap sheet which coat | covers an absorptive core, paper, such as tissue paper, various nonwoven fabrics, an apertured film, etc. can be used, for example.

  As the absorbent body 4, the effects (easy to bend, smooth development after opening the individual package, etc.) by folding the napkin 1 along the first folding lines L1 and L2 passing through the longitudinal groove 5 are more reliable. From the viewpoint of achieving the above, it is preferable to use a highly rigid absorber. For example, when the absorber 4 having a relatively low rigidity such as paper is used alone, the above-described effect may not be sufficiently obtained. As the highly rigid absorbent body, for example, 1) a laminated structure in which layers of nonwoven fabric are laminated, and a particulate water-absorbing resin is interposed between at least one of the layers in the laminated structure, adjacent to each other. An absorbent body between the nonwoven fabrics and between the water-absorbent resin and the nonwoven fabric joined by a hot-melt adhesive, 2) a wet fiber sheet comprising pulp fibers, The particulate water-absorbing resin (not sticky) is sprayed, and the water-absorbing resin is fixed to the pulp fiber by the adhesive force of the water-absorbing resin itself expressed by doing so. And an absorbent body obtained by drying the fiber sheet. The absorbers 1) and 2) not only have high rigidity, but also have flexibility, and also have shape recovery from folding due to the adhesive force of an adhesive or the like.

  Moreover, it is preferable that each structural member (the surface sheet 2, the back surface sheet 3, the absorber 4 etc.) in the napkin 1 is mutually joined partially by adhesives, such as a hot-melt-type adhesive, especially an absorber. 4 and the back sheet 3 are joined together by an adhesive that is spirally or Ω-shaped in plan view and is coated so that the longitudinal groove 5 extends across the width direction Y of the napkin 1. As described above, the restoring force of the napkin 1 after opening the individual package 10 becomes stronger, and the development after opening becomes easier.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in the above-described embodiment, the longitudinal groove portion 5 has a curved shape in which a plurality of arc-shaped curves are connected, but may have a linear shape as shown in FIG. When the longitudinal groove 5 is linear as shown in FIG. 7, the first folding line L <b> 1 passing through the longitudinal groove 5, as described above, is compared with the case where the longitudinal groove 5 is curved as shown in FIG. 2. , L2 and the effect of folding the napkin 1 (easily bendable, smooth development after opening the individual package) are easily achieved. However, in the said embodiment, since the middle high part 42 is formed in the vicinity of the curved longitudinal groove part 5 and the napkin 1 is bent along the middle high part 42 in the width direction Y, the longitudinal groove part 5 is a straight line. Even if it is not in the shape, the above-described effects are stably achieved.

  Moreover, the arrangement | positioning form of the adhesion part 7 is not restrict | limited to what is shown in FIG. 5, It can change suitably. In order to obtain the above-described effect due to the adhesive portion 7 having a specific positional relationship with respect to the first folding lines L1 and L2, the adhesive portion 7 is adhered to the front portion A and the rear portion C (the longitudinal groove portion non-arrangement region). The part 7 should just satisfy | fill such a positional relationship, and the presence or absence and the arrangement | positioning of the adhesion part 7 in the excretion part opposing part B (the said longitudinal direction groove part arrangement | positioning area | region) can be set irrespective of the said effect. .

  Moreover, the adhesive part which concerns on this invention is not restrict | limited to what the some adhesive part 7 was arrange | positioned at predetermined intervals in the longitudinal direction X of the napkin 1, as shown in FIG. 5, for example, Fig.8 (a) As shown in FIG. 3, the adhesive portion 7 may be one rectangular shape that extends across the width direction Y and continues in the longitudinal direction X over the plurality of (two) first folding lines L1, L2, or As shown in FIG. 8 (b), only a part (one) of the plurality of (two) first folding lines L1 and L2 spans the width direction Y and continues in the longitudinal direction X. A plurality (two) of the adhesive portions 7 may be arranged at predetermined intervals in the width direction Y of the napkin 1.

  Moreover, the napkin 1 may have a wing part and may also have a rear flap part. The wing part is provided on both the left and right sides of the normal excretion part facing part B. Further, the present invention can be suitably applied particularly to absorbent articles for women such as sanitary napkins, panty liners (origami sheets), and incontinence pads.

1 Sanitary napkin (absorbent article)
2 Top sheet 3 Back sheet 4 Absorber 5 Longitudinal groove portion 6 Width direction groove portion 7 Adhesive portion 8 Fastening tape 9 Packaging material 10 Individual package 40 of absorbent article (sanitary napkin) Lower layer absorber 41 Upper layer absorber 42 Middle high Part A Front part (longitudinal groove part non-arrangement region)
B Excretion part facing part (longitudinal groove part arrangement area)
C rear part (longitudinal groove part non-arrangement area)
L1, L2 First folding line L3, L4 Second folding line X Article longitudinal direction Y Article width direction

Claims (3)

An excretory part facing part that comprises a top sheet that forms a skin contact surface, a back sheet that forms a non-skin contact surface, and an absorbent body disposed between both sheets and that faces the excretion part of the wearer when worn A substantially vertically long absorbent article having an individual package of an absorbent article that is folded and packaged with a packaging material,
The absorbent article includes a longitudinal groove portion arrangement region having a longitudinal groove portion, which is formed by integrally recessing the top sheet and the absorbent body and extending in the longitudinal direction of the article, and a longitudinal direction not having the longitudinal groove portion. It has a direction groove part non-arrangement region in the article longitudinal direction,
The longitudinal groove portion arrangement region is located at the excretion portion facing portion, and the longitudinal groove portion non-arrangement region is located respectively in the longitudinal direction of the article across the longitudinal groove portion arrangement region and the longitudinal groove portion arrangement. Adjacent to the area,
The absorbent article, together with the packaging material, is folded in the article width direction along a first folding line extending in the article longitudinal direction through the longitudinal groove, and further extending in a direction intersecting the first folding curve. It is bent in the longitudinal direction of the article with a folding line,
On the non-skin contact surface in the longitudinal groove portion non-arrangement region of the absorbent article, an adhesive portion that fixes the absorbent article to clothing is provided so as to straddle the first folding line in the article width direction. , Individual packaging of absorbent articles.   The absorbent article is folded in the article width direction along the first folding line so that the entire skin contact surface of the absorbent article is covered with the constituent members of the individual packaging, and further, the second folding It is bent in the longitudinal direction of the article with a curved line, and the end of the packaging material located on the outermost layer by being folded with the second folding line is fixed to the opposing packaging material via an adhesive that can be peeled off. The individual package of the absorbent article according to claim 1.   The individual packaging of the absorbent article according to claim 1 or 2, wherein the surface sheet has an uneven structure.

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