JP4508861B2 - Sanitary napkin - Google Patents

Description

The present invention relates to a sanitary napkin down.

  In an absorbent article such as a sanitary napkin, a napkin in which the central part (crotch part) on the skin contact surface side is thicker than the other parts or formed in multiple layers in order to improve fit and leakage prevention. Etc. are known.

For example, Patent Document 1 includes a lower absorbent material, and an upper absorbent material formed by folding inward both ends in the width direction from the front end region to the central region, and forming the folded portion narrower than the width of the lower absorbent material. There has been proposed a sanitary napkin comprising an absorbent body formed from the above, having a thick central portion in the width direction and a thin rear end region.
Further, in Patent Document 2, a plurality of rectangular sheet-like absorbent materials having a length shorter than each other and different from each other are interposed between two sheets of rectangular sheet-like absorbent materials having the same length. Thus, there has been proposed a sanitary napkin provided with an absorbent body formed so as to be gradually thinner from its substantially central portion to its rear end portion.
Japanese Utility Model Publication No. 58-13228 Japanese Utility Model Publication No. 58-13224

  The conventional napkin as disclosed in Patent Documents 1 and 2 is caused by a difference in rigidity of the napkin at the boundary portion between the central portion and other regions not formed in the thick layer when worn. For this reason, a gap is easily formed between the skin contact surface of the napkin located in the boundary part and the vicinity thereof, and the wearer's skin, and excrement such as menstrual blood is present in the gap. It may stay and leak to the outside.

Accordingly, an object of the present invention is to provide a sanitary napkin that fits well to the wearer's body shape and is excellent in leak-proof properties when worn.

  The present invention is an absorbent article comprising a top sheet, a back sheet, and a liquid-retaining absorbent interposed between both sheets, and the absorbent article faces the excretory part of the wearer when the absorbent article is worn. It has an excretory part opposing part and a front part and a rear part extending in front and rear thereof, and the absorber is a main absorber arranged from the front part to the rear part, and an auxiliary arranged in the excretion part opposing part The auxiliary absorbent body is formed by folding a single absorbent sheet, and the number of the absorbent sheets stacked by the folding is from one end to the other end in the longitudinal direction of the absorbent article. The end of the auxiliary absorbent body in the longitudinal direction of the absorbent article is achieved by providing an absorbent article that is not parallel to the width direction of the absorbent article. It is.

  The present invention also includes a top sheet, a back sheet, and a liquid retaining absorbent interposed between the two sheets, and extends to the excretory part facing part that faces the excretion part of the wearer when worn and to the front and back thereof. The absorbent article has a front part and a rear part, and the absorbent body is composed of a main absorbent body arranged from the front part to the rear part and an auxiliary absorbent body arranged in the excretory part facing part. An absorbent article comprising the steps of: cutting an absorbent sheet that is continuously supplied into a predetermined length and a predetermined shape; and folding the cut absorbent sheet to produce the auxiliary absorbent body. The object is achieved by providing a manufacturing method.

The sanitary napkin of the present invention is particularly characterized by the form of the absorbent body, particularly the auxiliary absorbent body constituting the absorbent body, so that when worn, wrinkles due to the difference in rigidity of the sanitary napkin are difficult to enter, It is flexibly curved in the longitudinal direction and fits well to the body shape of the wearer, excrement retention is unlikely to occur, and leakage is excellent.

Hereinafter, the present invention will be described based on a preferred embodiment thereof with reference to the drawings. In addition, the auxiliary | assistant absorber 42 in the sanitary napkin 1 shown in FIGS. 1-4 is a reference example.
The sanitary napkin 1 according to this embodiment includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid interposed between the two sheets 2 and 3, as shown in FIGS. A retaining absorber 4 is provided. In addition, a pair of side sheets 5 and 5 are provided in the longitudinal direction of the absorbent body 4 over substantially the entire length on both sides in the width direction of the absorbent article (napkin) on the skin contact surface side of the napkin 1. It is arranged along. In this specification, the “skin contact surface side” is the side (surface) that is disposed on the skin side of the wearer during wearing, out of both sides (surfaces) of each member. In addition, hereinafter, the phrase “non-skin contact surface side” may be used, but this is arranged on the opposite side of the skin side of the wearer when worn, on both sides (surfaces) of each member. Side (surface).

  The sanitary napkin 1 has an excretion part facing part A that faces the excretion part of the wearer when worn, and a front part B and a rear part C that extend before and after the excretion part facing part A. When the sanitary napkin 1 is worn, the front part B is arranged on the front (abdomen) side of the wearer, and the rear part C is arranged on the rear (back) side of the wearer.

As shown in FIGS. 2 and 3, the top sheet 2 covers the entire area on the skin contact surface side of the absorbent body 4, and both end portions in the napkin width direction are napkin widths of the absorbent body 4. It is arranged at a position slightly extending from each side edge in the direction. The back sheet 3 covers the entire area of the absorbent body 4 on the non-skin contact surface side, and has portions that extend outward from both side edges of the absorbent body 4 in the napkin width direction. However, the side flaps 6 are formed on both side portions in the width direction of the napkin 1 together with the side sheets 5. The side flap 6 extends further outward at the position of the excretory part facing part A, and forms a pair of wing parts 61 and 61. On the non-skin contact surface side of the back sheet 3 and the pair of wing portions 61, 61, an adhesive is applied to form a fixing portion (not shown) for fixing the napkin 1 to shorts or the like. Has been.
The above-described configuration of the napkin 1 of the present embodiment is the same as that of a conventionally known sanitary napkin.

  Below, the said absorber 4 in the napkin 1 of this embodiment is explained in full detail. As shown in FIGS. 1 and 2, the absorbent body 4 includes a main absorbent body 41 disposed from the front part B to the rear part C, and an auxiliary absorbent body disposed in the excretory part facing part A. 42.

  The main absorbent body 41 includes a lower absorbent body 411 and an upper absorbent body 412 disposed on the skin contact surface side of the lower absorbent body 411. The lower absorbent body 411 and the upper absorbent body 412 are not joined and fixed. Both absorbers 411 and 412 have a substantially vertically long rectangular plan view shape. The lower absorbent body 411 and the upper absorbent body 412 preferably have a total length (length in the napkin longitudinal direction) of 250 to 450 mm and a width (length in the napkin width direction) of 60 to 180 mm.

  The thickness of the lower absorbent body 411 is preferably 0.3 to 2.5 mm, more preferably 0.5 to 1.5 mm, from the viewpoint of wearing feeling, improvement of fit to the wearer's body, and prevention of leakage. is there. The thickness of the upper absorbent body 412 is preferably 0.3 to 2.0 mm, more preferably 0.5 to 1.5 mm, from the same viewpoint.

The basis weight of the lower absorbent body 411 is preferably 40 to 200 g / m ² , more preferably 50 to 150 g / m ² . The basis weight of the upper absorbent body 412 is preferably 40 to 200 g / m ² , more preferably 50 to 100 g / m ² . Moreover, the basis weight ratio of both is (lower absorber) :( upper absorber) = 3: 1 to 1: 2, making it easy to move the liquid to the lower layer without retaining the upper layer, making the absorber more efficient It is preferable in that it can be used well.

  In the present embodiment, the lower absorbent body 411 and the upper absorbent body 412 are each formed from an absorbent sheet having a basis weight in the above range. These absorptive sheets forming both absorbers 411 and 412 are similar in material to the absorptive sheet which is a material for forming the auxiliary absorber 42.

  As shown in FIGS. 1 and 2, the auxiliary absorbent body 42 is a smaller absorbent body than the main absorbent body 41 and is formed in a vertically long shape, and the lower absorbent body 411 and the lower absorbent body 411 in the excretory part facing part A It is arranged between the upper absorber 412. The lower absorbent body 411 and the upper absorbent body 412 and the auxiliary absorbent body 42 are not bonded and fixed.

  As shown in FIGS. 4 and 5, the auxiliary absorbent body 42 is formed by folding a single absorbent sheet. In the present embodiment, the auxiliary absorbent body 42 is formed of an arrow-shaped absorbent cut sheet 11 as shown in FIG. 5 (a), as shown in FIGS. 5 (b) and 5 (c). It is formed by folding both end portions 11s, 11s in the width direction so as to overlap each other at the center portion in the width direction of the absorbent cut sheet 11. The manufacturing process of the auxiliary absorber will be described in detail later.

  The auxiliary absorbent body 42 obtained by such folding has its folding line, that is, both ends 42t and 42t located at the outermost side in the width direction of the auxiliary absorbent body 42 coincide with the longitudinal direction of the napkin, and the both ends The overlapping portion 42u (the hatched portion in FIG. 4) of the portions 11s and 11s is directed to the front portion B side of the napkin 1, and the widthwise central portion of the main absorbent body 4 in the excretory portion facing portion A (See FIG. 1).

  As shown in FIG. 4, the auxiliary absorbent body 42 is configured so that the number of the absorbent cut sheets 11 that are folded as described above changes from one end to the other end in the longitudinal direction of the absorbent article (napkin). It is. In FIG. 4, the numerical value surrounded by ○ indicates the number of sheets of the absorbent cut sheet 11, and the napkin width direction center from the one end 42 b on the front part B side in the napkin longitudinal direction toward the other end 42 c. The number of stacked sheets in the part changes to 1, 2, 3, and 1 and the number of stacked sheets on both sides in the napkin width direction changes to 1, 2, and 1 respectively. Such a configuration is mainly for reducing the rigidity difference in the longitudinal direction of the napkin of the absorbent body 4 which is concerned by providing the auxiliary absorbent body 42 together with the main absorbent body 41. In this way, by controlling the number of the auxiliary absorbent bodies 42 to be stacked, the difference in rigidity in the longitudinal direction of the napkin in the portion where the auxiliary absorbent bodies 42 of the napkin 1 are arranged and thickened can be alleviated. It becomes possible to effectively prevent the formation of a gap between the napkin and the skin of the wearer, which causes the sticking out.

  Further, both ends of the auxiliary absorbent body 42 in the longitudinal direction of the napkin (the one end 42b and the other end 42c) have a substantially V-shaped bent shape as shown in FIGS. 1 and 4, and the napkin width direction Are not parallel to each other, and project toward both ends of the napkin in the longitudinal direction. When the one end 42b and the other end 42c of the auxiliary absorbent body 42 are linear in parallel with the napkin width direction, the portion where the auxiliary absorbent body 42 of the napkin 1 is thickened and the auxiliary absorbent body 42 are arranged. The wrinkles caused by the difference in rigidity of the absorbent body 4 are likely to enter the boundary portion with the non-exposed portion. For this reason, between the skin contact surface of the napkin located near the boundary portion and the wearer's skin There is a risk that menstrual blood or the like stays in the gap and leaks to the outside.

  In the present embodiment, as shown in FIG. 4, when the auxiliary absorber 42 is divided into a plurality of regions (in this embodiment, divided into nine regions) according to the number of stacked sheets, the napkin longitudinal direction The number of overlaps in the regions located at both ends of each is one. In other words, the number of overlaps in the area having the one end 42b in the longitudinal direction of the napkin of the auxiliary absorber 42 and the number of overlaps in the area having the other end 42c are both the minimum overlap number. Yes. In this way, the portions near the front and rear ends in the longitudinal direction of the napkin in the auxiliary absorbent body 42 are set to the minimum number of sheets, so that the portion where the auxiliary absorbent body 42 of the napkin 1 is thickened and the auxiliary absorbent body 42 are arranged. The rate of change of the layer thickness between the unapplied portion can be relaxed, and the formation of a gap between the napkin and the wearer's skin can be effectively prevented. Further, by setting one end side and the other end side of the auxiliary absorbent body 42 in the longitudinal direction of the napkin to be the minimum number of overlapped sheets, the number of overlapped auxiliary absorbent bodies 42 increases from the one end 42b toward the central portion in the longitudinal direction. , Since it decreases from the central portion in the longitudinal direction toward the other end 42c, the rigidity difference in the longitudinal direction of the napkin of the auxiliary absorber 42 itself, and thus the portion where the auxiliary absorber 42 is disposed and thickened The rigidity difference in the longitudinal direction of the napkin is relaxed, and the fit and leakproofness are enhanced.

The auxiliary absorbent body 42 preferably has a total length (length in the napkin longitudinal direction) L1 of 80 to 160 mm and a width (length in the napkin width direction) W1 of 30 to 60 mm.
The total length of the auxiliary absorber 42 is preferably in the range of 30 to 50% of the total length of the main absorber 41, and the width of the auxiliary absorber 42 is 30 to 30% of the width of the main absorber 41. It is preferable to be in the range of 70%.

  In the auxiliary absorbent body 42, the region where the absorbent cut sheets 11 are stacked most frequently (the region indicated by 3 surrounded by a circle in FIG. 4) is the total length (the maximum in the longitudinal direction of the napkin). The length L2 is preferably in the range of 25 to 80 mm, and the width (maximum length in the napkin width direction) W2 is in the range of 5 to 15 mm.

  The total length L2 of the region with the largest number of stacked sheets in the auxiliary absorbent body 42 is in the range of 30 to 70%, particularly 40 to 60% of the length L1 of the auxiliary absorbent body 42 in the longitudinal direction. In addition, it is preferable in that a region for relaxing the step (1 surrounded by a circle in FIG. 4) can be secured. In addition, from the same viewpoint, the width W2 of the most overlapped region is preferably in the range of 5 to 50%, particularly 10 to 40% of the length W1 of the auxiliary absorbent body 42 in the napkin width direction.

  The thickness of the absorbent cut sheet 11 constituting the auxiliary absorber 42 is 0.1 to 1.5 mm, particularly 0.3 to 0.8 mm, which has the effect of reducing the rigidity difference and improving the fit. It is preferable in that it exerts and prevents leakage in the rear and oblique directions.

The basis weight of the auxiliary absorbent body 42 (the absorbent cut sheet 11) is preferably 20 to 150 g / m ² , more preferably 35 to 100 g / m ² . Moreover, the ratio (basis weight ratio) of the basic weight of the main absorbent body 41 (the total of the basic weight of the lower absorbent body 411 and the basic weight of the upper absorbent body 412) and the basic weight of the auxiliary absorbent body 42 is , (Main absorbent body): (auxiliary absorbent body) = 1: 2 to 1: 1 improves the fit in the excretion part (auxiliary absorbent body placement part), and rearward or diagonally backward due to the step formation. This is preferable in terms of preventing leakage.

  The napkin 1 of the present embodiment is a sanitary napkin using the absorbent body 4 including the main absorbent body 41 and the auxiliary absorbent body 42 described above, and each configuration of the napkin 1 other than the absorbent body 4 described above is as follows. As detailed below.

  As shown in FIG. 3, each of the pair of side sheets 5 and 5 has a portion 5 </ b> A located near the center in the width direction of the napkin 1, which is formed into two layers by folding the sheet. 5 is an inner edge 51. The inner edge 51 is formed in a straight line on the width direction center portion side of the napkin 1. As described above, the side sheet 5 is preferably folded in two layers so that the folded portion is located on the center side in the napkin width direction, since the pocket is easily opened when worn.

  Further, the pair of side sheets 5 and 5 are bonded and fixed to the skin contact surface side of the top sheet 2 by heat embossing, respectively, so that a bonding fixing portion 7 is formed. In the present embodiment, the joint fixing portion 7 is formed in a linear shape continuous along the longitudinal direction of the napkin, but can also be formed in a wavy line shape, a zigzag shape, or the like. Moreover, in this embodiment, although the joining fixing | fixed part 7 is formed over the said excretion part opposing part A and the said front part B and the said rear part C located in the back and front, only the excretion part opposing part A It can also be formed, and can also be formed so as to extend from the excretory part facing part A to either the front part B or the rear part C.

  The part 5A of the side sheet 5 is fixed to the back sheet 3 together with the top sheet 2 by heat embossing at the front and rear ends of the napkin 1. Moreover, the part 5B located in the width direction outer side of the napkin 1 in the side sheet 5 is bonded and fixed to the back sheet 3 with an adhesive, and is located in the peripheral part 8 of the napkin 1 in the part 5B. The portion is bonded and fixed to the back sheet 3 by heat embossing.

  The napkin 1 of the present embodiment is manufactured except that the auxiliary absorber 42 is manufactured, and the manufactured auxiliary absorber 42 is arranged at a predetermined position (between the lower absorber 411 and the upper absorber 412). It can be produced by the same method as this kind of sanitary napkin.

A preferred example of the manufacturing process of the auxiliary absorber 42 will be described with reference to FIG.
First, the long absorbent sheet 10 wound in a roll shape is successively fed out and continuously supplied, and the absorbent sheet 10 is cut by a cutting tool such as a cutter at a cutting position indicated by Δ in FIG. It cut | disconnects and the absorptive cut sheet 11 (one absorptive sheet) cut | disconnected by predetermined length (L1 in FIG. 4) and predetermined shape (this embodiment is arrow feather shape) is obtained. That is, the absorbent cut sheet 11 is located on an arbitrary point a at one end in the width direction of the long absorbent sheet 10 and the center line x in the width direction of the absorbent sheet 10, but passes through the point a. A straight or curved cutting line p (in this embodiment, a straight cutting line) connecting a point b not on the virtual line y parallel to the width direction, and the cutting line p and the center line x are sandwiched The cutting lines q are set in line symmetry with each other, and the cutting lines r and s having the same shape are set at predetermined intervals in the longitudinal direction of the absorbent sheet 10 with the cutting lines p and q, respectively. The absorbent sheet 10 is obtained by cutting along the four cutting lines p, q, r, and s.

  Next, as shown in FIGS. 5 (b) and 5 (c), the absorbent cut sheet 11 (one absorbent sheet) cut in this way is subjected to its width direction (long absorbent before cutting). The auxiliary absorbent body 42 is obtained by folding both end portions 11 s and 11 s in the direction orthogonal to the longitudinal direction of the sheet 10 so as to overlap each other at the center portion in the width direction of the absorbent cut sheet 11.

  As described above, in the manufacturing process of the auxiliary absorbent body 42, the long absorbent sheet 10 that is continuously supplied is cut into a predetermined shape (in the present embodiment, the arrow blade shape), and then the cut absorption. By folding the cut sheet 11, the characteristic form as described above can be obtained.

As a material which comprises each part of the napkin 1 of this embodiment, what is normally used in the said technical field can be especially used without a restriction | limiting.
For example, as the surface sheet 2, a hydrophilic and liquid-permeable nonwoven fabric or an apertured film can be used. As the back sheet 3, a liquid-impermeable material or a water-repellent material can be used. As the liquid-impermeable material, a resin film, a laminate material of a resin film and a nonwoven fabric, or the like can be used. As the water-repellent material, a multi-layer composite composed of spunbond, meltblown, spunbond, etc. Nonwoven fabrics, spunbonded nonwoven fabrics, heat bonded nonwoven fabrics, air-through nonwoven fabrics and the like can be used. As the side sheet 5, the same sheet as the back sheet 3 can be used.

  As the main absorbent body 41, in addition to the absorbent sheet similar to the auxiliary absorbent body 42, a fiber aggregate made of pulp fibers or the like, or a fiber aggregate and a water absorbent polymer (water absorbent polymer and fiber material) Can be used. Examples of water-absorbing polymers include sodium polyacrylate, (acrylic acid-vinyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch-acrylic acid) graft copolymer, and (isobutylene-maleic anhydride) copolymer. Examples thereof include a polymer and a saponified product thereof, and polyaspartic acid. Examples of the fibers constituting the main absorbent body 41 include hydrophilic fibers such as pulp fibers, rayon fibers, cotton fibers, and cellulose acetate, polyolefin fibers such as polyethylene and polypropylene, and condensation fibers such as polyester and polyamide. I can. The water-absorbing polymer and the fiber can be used alone or in combination of two or more.

  Examples of the absorbent sheet used as a material for forming the auxiliary absorbent body 42 (main absorbent body 41) include an absorbent sheet manufactured by a method described in JP-A-8-246395, paper, and non-woven fabric. Use an absorbent sheet obtained by spraying a superabsorbent polymer after applying a hot melt adhesive or the like, an absorbent sheet obtained by blending a superabsorbent polymer during the production process of spunbond or meltblown nonwoven fabric, etc. be able to.

  The napkin 1 of this embodiment is shorts by the said fixing | fixed part (not shown) provided in the non-skin contact surface side of the said back surface sheet 3 and a pair of said wing parts 61 and 61 similarly to the conventional napkin. It is used by being fixed to the inner surface of clothing such as.

  According to the napkin 1 of the present embodiment, as described above, since the auxiliary absorber 42 having a characteristic form is used, the flexibility of the portion where the auxiliary absorber 42 is arranged and thickened is increased. Excellent, since the difference in rigidity of the absorbent body 4 in the longitudinal direction of the napkin is effectively mitigated, a portion where the auxiliary absorber 42 is thickened and a portion where the auxiliary absorber 42 is not disposed It is difficult for wrinkles due to the difference in rigidity of the absorbent body 4 to enter the boundary portion, and when worn, it bends flexibly in the longitudinal direction and fits well to the wearer's body shape. It is difficult to cause excrement retention and has excellent leakage prevention. Further, since the auxiliary absorber 42 is disposed between the lower absorber 411 and the upper absorber 412, it is possible to prevent leakage of particulate matter such as a water-absorbing polymer from the auxiliary absorber 42 to the outside. it can.

6 and 7 are plan views of other embodiments of the auxiliary absorbent body according to the present invention, respectively. In addition, the description of embodiment mentioned above is applied to the location which abbreviate | omitted description in each following embodiment. The auxiliary absorber shown in FIG. 7 is a reference example.

  The auxiliary absorbent body 43 shown in FIG. 6 is configured in the same manner as the auxiliary absorbent body 42 in the above-described embodiment except that the arrow-shaped absorbent cut sheet 11 is folded differently. That is, the auxiliary absorbent body 43 has the arrow-shaped absorbent cut sheet 11 shown in FIG. 5A, the widthwise ends 11s and 11s thereof, and the width-direction center portion of the absorbent cut sheet 11, respectively. And are folded so as to abut each end without overlapping. That is, there is no overlap at the sheet end, and the sheet end faces are in contact with each other or face each other with a slight gap. In FIG. 6, the numerical value surrounded by ◯ indicates the number of sheets of absorbent cut sheets (the same applies to FIG. 7). When the auxiliary absorbent body 43 is disposed on the napkin 1, either one of the longitudinal direction one end side or the other end side may be directed to the front portion A side.

  The auxiliary absorbent body 44 shown in FIG. 7 is configured in the same manner as the auxiliary absorbent body 42 in the above-described embodiment except that the shape of the absorbent cut sheet (one absorbent sheet cut into a predetermined shape) is different. ing. That is, the auxiliary absorbent body 44 is formed along the straight cutting lines p, q, r, and s in the cutting process of the long absorbent sheet 10 shown in FIG. Cut along four curved cutting lines (not shown in the figure) (cut into a curved shape as a whole) without cutting (cut into a bent shape as a whole). An absorptive cut sheet (not shown) is bent in the same manner as in FIGS. 5B and 5C, and one end 44c in the longitudinal direction has a curved shape. . As in the case of the auxiliary absorbent body 42, the auxiliary absorbent body 44 has an overlapping portion 44u (a hatched portion in FIG. 7) at both ends of the absorbent cut sheet (not shown) as the front portion of the napkin 1. It is arranged on the napkin 1 toward the B side (with one end 44c having a curved shape facing the rear portion C side of the napkin 1).

As mentioned above, although embodiment of this invention was described, this invention is not restrict | limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, the auxiliary absorbent body 42 is disposed between the lower absorbent body 411 and the upper absorbent body 412, but the non-skin contact surface side of the lower absorbent body 411 (the lower absorbent body 411 and It can also be arranged on the skin contact surface side of the upper absorbent body 412 (between the upper absorbent body 412 and the top sheet 2).

  In the above-described embodiment, the main absorbent body 41 has a two-layer structure including the lower absorbent body 411 and the upper absorbent body 412, but may have a single-layer structure. In this case, the auxiliary absorbent body 42 may be disposed on the skin contact surface side of the main absorbent body having a single layer structure (between the main absorbent body having a single layer structure and the surface sheet 2), or on the non-skin contact surface side. (Between the main absorbent body having a single-layer structure and the back sheet 3). In addition, when the main absorber has a single-layer structure, the shape of the main absorber is preferably a shape in which the lower absorber 411 and the upper absorber 412 are stacked without being deformed, The size of each part of the main absorber having a single layer structure is preferably as described above. In addition, about the thickness and basic weight of this main absorber of a single layer structure, the total value of each thickness of the lower absorber 411 and the upper absorber 412 mentioned above, or the total value of basic weight is preferable.

  Further, in the above-described embodiment, the auxiliary absorber 42 has the overlapping portion 42u (the overlapping portion of both end portions 11s and 11s in the width direction of the absorbent cut sheet 11) facing the front portion B side of the napkin 1. However, on the contrary, the overlapping portion 42u may be disposed toward the rear portion C side. As with the auxiliary absorber 44 shown in FIG. 7, the overlapping portion 44u is directed toward the rear portion C (the one end 44c having a curved shape is directed toward the front portion B of the napkin 1). It may be arranged.

  The side sheet 5 is made of a stretchable material, or a thread-like or band-like elastic material (for example, a thread rubber or a flat rubber) is disposed near the inner edge 51 thereof. The pocket may be easily formed (opened) by being sandwiched between the side sheets 5 folded at the edge 51. When the elastic material is fixed, the elastic material may be fixed by the joint fixing part 7 or may be separately fixed by a hot-melt adhesive.

Moreover, although embodiment mentioned above had the wing part 61, you may not have a wing part . Also, around the portion where the auxiliary absorbent body is thicker disposed, the side grooves, all circumferential groove, may be formed as a like longitudinal grooves in combination singly or them appropriately, the partial Groove processing (embossing) may be performed.

  Moreover, as a manufacturing method other than the above-mentioned of an auxiliary | assistant absorber, first, perforation is put into a predetermined shape (for example, arrow feather shape) in an elongate absorbent sheet (it does not separate at this stage), then, There is a method in which the absorbent sheet is folded in a long shape, and the folded absorbent sheet is separated along the perforation, which is a partial cut, by pulling along the longitudinal direction. You may manufacture an auxiliary absorber by.

It is a top view which shows the state which looked at the sanitary napkin as one Embodiment of this invention from the surface sheet side. It is a longitudinal cross-sectional view which shows typically the II cross section of FIG. It is a cross-sectional view which shows typically the II-II line cross section of FIG. It is a top view of the auxiliary absorber of the reference example in the sanitary napkin shown in FIG. It is process schematic explanatory drawing of the manufacturing process of the auxiliary absorber of the reference example shown in FIG. It is a top view of one embodiment of an auxiliary absorber concerning the present invention. It is a top view of the auxiliary absorber of a reference example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Top sheet 3 Back sheet 4 Absorber 41 Main absorbent body 411 Lower absorbent body 412 Upper absorbent body 42 Auxiliary absorbent body 5 Side sheet 6 Side flap part 61 Wing part A Excretion part opposing part B Front part C Rear part

Claims (4)

A sanitary napkin comprising a topsheet, a backsheet and a liquid-retaining absorbent interposed between both sheets,
The sanitary napkin has an excretion part facing part that faces the excretion part of the wearer when worn, and a front part and a rear part extending in front and back thereof,
The absorber is composed of a main absorber disposed from the front part to the rear part, and an auxiliary absorber disposed in the excretory part facing part,
The auxiliary absorbent body is formed by folding both ends in the width direction of one absorbent sheet so as to abut each other at the center in the width direction of the absorbent sheet , and the overlapping of the absorbent sheets by this folding number of sheets, one towards the rear end from the napkin longitudinal front end in the excretion portion facing section, two, Yes and No to sequentially changed one,
Both ends of the auxiliary absorbent body in the longitudinal direction of the napkin have a substantially V-shaped bent shape that is not parallel to the width direction of the napkin and protrudes toward the longitudinal end of the sanitary napkin. Sanitary napkin. The napkin longitudinal length of the number of overlapping sheets most regions of the absorbent sheet in the auxiliary absorber sanitary napkin of claim 1 Symbol placement 20-60% of the napkin longitudinal length of the auxiliary absorbent member. The main absorbent body includes a lower absorbent body and an upper absorbent body disposed on the skin contact surface side of the lower absorbent body, and the auxiliary absorbent body is disposed between the lower absorbent body and the upper absorbent body. The sanitary napkin according to claim 1 or 2, wherein A top sheet, a back sheet, and a liquid retaining absorbent interposed between the two sheets, and an excretory part facing part that faces the excretion part of the wearer when worn, and a front part and a rear part extending in front and back thereof The absorber comprises a main absorber disposed from the front part to the rear part, and an auxiliary absorber disposed in the excretory part facing part. The both ends of the absorbent sheet in the width direction are folded so as to abut each other at the center in the width direction of the absorbent sheet , and the number of the absorbent sheets stacked by this folding is the excretory part facing part in one toward the rear end from the napkin longitudinal front end, two, Yes and No to sequentially changed one, napkins longitudinal ends of said auxiliary absorbent body, respectively, with respect to the napkin width direction And the sanitary nap is not parallel A method of manufacturing a sanitary napkin having a substantially V-shaped bent shape protruding toward the longitudinal end of the down,
A method for producing a sanitary napkin comprising the steps of: cutting the continuously supplied absorbent sheet into a predetermined length and a predetermined shape, and folding the cut absorbent sheet to manufacture the auxiliary absorbent body.

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