TWI832822B - Individual packaging of absorbent articles - Google Patents

Abstract

The present invention is an individual package of absorbent articles, which is provided with: an absorbent article having a length direction corresponding to a direction connecting the wearer's abdominal part, crotch part, and back part, and orthogonal to the length direction. in the width direction, and contains volatile components; and a packaging material that covers the surface of the absorbent article facing the clothing; and the above-mentioned individual packaging body has the following folding structure, that is, the above-mentioned absorbent article and the above-mentioned packaging material Fold together along two or more folding lines in the above-mentioned length direction, so that the skin of the above-mentioned absorbent article is in contact with the skin; and the above-mentioned packaging material has a structure in which a fusion layer and an airtight layer are laminated, and is folded The above-mentioned packaging material is provided with: a pair of fusion sealing areas, which are formed by joining the fusion layers facing each other on both sides of the longitudinal direction of the absorbent article; and a sealing fixing area, which is arranged on the above-mentioned individual packaging body. The opening of the folded structure; and on the surface of the above-mentioned absorbent article facing the clothing, it has a plurality of fixing parts and fixing part non-arrangement parts covered by the above-mentioned packaging material, and the above-mentioned fixing parts are spaced apart from each other. Arrangement; and the individual packaging body of the above-mentioned absorbent article has at least one of the following structures (A1) and (A2); and the above-mentioned volatile component is a cooling agent. (A1) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the width direction, a gas release portion is arranged in the fusion sealing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the width direction communicates with the gas release portion of the fusion sealing region in the width direction. (A2) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the longitudinal direction, a gas release portion is arranged in the sealing and fixing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the longitudinal direction communicates with the gas release portion of the sealing and fixing area in the longitudinal direction.

Description

Individual packaging of absorbent articles

The present invention relates to an individual packaging body for absorbent articles.

Sanitary products such as menstrual napkins sometimes contain fragrances as volatile ingredients not only to absorb body fluids but also to suppress the smell of excretion fluids or to eliminate uncomfortable emotions. In addition, there is a technology that, in addition to the purpose of deodorizing or enjoying the fragrance, also designs products to contain volatile components that stimulate sensory nerves, such as menthol or menthyl lactate, so that people can use the products more comfortably.

For example, Patent Document 1 describes a packaged absorbent article for women's hygiene containing a non-aqueous volatile substance that can convey a pleasant fragrance or a cold feeling to the wearer. As packaging materials, it is described that those with low permeability are used. Patent Document 2 describes an individual packaging body for absorbent articles that uses a packaging sheet including an airtight layer and a fusion layer having a lower melting point than the airtight layer from the viewpoint of improving airtightness. Patent Document 3 describes an individual packaging body for absorbent articles that uses a packaging sheet with low oxygen penetration to make the volatile components contained less likely to volatilize. In the individual package, a medicine containing volatile components and a solvent that retains the volatile components is impregnated into the sealing area of the packaging sheet and functions as a sealing liquid, thereby improving the airtightness of the storage space of the individual package. Furthermore, a technique for making it difficult to form a breathable path in the above-mentioned sealing area is described. [Prior art documents] [Patent documents]

[Patent Document 1] International Publication No. 2004/103235 [Patent Document 2] Japanese Patent Laid-Open No. 2016-209211 [Patent Document 3] Japanese Patent Laid-Open No. 2016-209215

The present invention provides an individual package of absorbent articles, which includes an absorbent article having a length direction corresponding to a direction connecting the wearer's abdominal part, crotch part, and back part, and orthogonal to the length direction. in the width direction, and contains volatile components; and a packaging material that covers the surface of the absorbent article facing the clothing; and the above-mentioned individual packaging body has the following folding structure, that is, the above-mentioned absorbent article and the above-mentioned packaging material Fold together along two or more folding lines in the above-mentioned length direction, so that the skin of the above-mentioned absorbent article is in contact with the skin; and the above-mentioned packaging material has a structure in which a fusion layer and an airtight layer are laminated, and is folded The above-mentioned packaging material is provided with: a pair of fusion sealing areas, which are formed by joining the fusion layers facing each other on both sides of the longitudinal direction of the absorbent article; and a sealing fixing area, which is arranged on the above-mentioned individual packaging body. The opening of the folded structure; and on the surface of the above-mentioned absorbent article facing the clothing, it has a plurality of fixing parts and fixing part non-arrangement parts covered by the above-mentioned packaging material, and the above-mentioned fixing parts are spaced apart from each other. Arrangement; and the individual packaging body of the above-mentioned absorbent article has at least one of the following structures (A1) and (A2); and the above-mentioned volatile component is a cooling agent. (A1) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the width direction, a gas release portion is arranged in the fusion sealing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the width direction communicates with the gas release portion of the fusion sealing region in the width direction. (A2) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the longitudinal direction, a gas release portion is arranged in the sealing and fixing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the longitudinal direction communicates with the gas release portion of the sealing and fixing area in the longitudinal direction.

The above and other features and advantages of the present invention can be further clarified from the following description with appropriate reference to the accompanying drawings.

The present invention relates to an individual packaging body for absorbent articles, which has a structure in which volatile components are slowly released from the individual packaging body even if they evaporate from the absorbent article, thereby suppressing breakage of the packaging material.

In previous individual packaging bodies of absorbent articles, the better the aroma diffusion of volatile components, the easier it is to evaporate at room temperature, and the effect may be weakened before use or the aroma may be transferred to adjacent substances. From the viewpoint of preventing the disappearance of such active ingredients and further maintaining hygiene, packaging materials with high gas barrier properties are used as described in the above-mentioned Patent Documents 1 to 3. However, when packaging materials with high gas barrier properties are used, the volatilization of the active ingredients may cause individual packages to expand and cause the packaging materials to break. In this case, the active ingredients will disappear and hygienic conditions cannot be maintained. . In particular, when individual packages are carried, they are placed in a bag or the like and pressure is applied. Therefore, it may be difficult to maintain active ingredients and hygienic conditions due to the above-mentioned mechanism. Since individual packaging systems are based on this form of use, there is a strong desire to prevent the packaging material from breaking.

The volatile components of the individual packaging system for absorbent articles of the present invention are slowly released from the individual packaging body even if they evaporate from the absorbent article, thereby inhibiting the rupture of the packaging material.

Hereinafter, a preferred embodiment of the individual packaging body of the absorbent article of the present invention will be described with reference to the drawings.

In the present invention, an absorbent article refers to an article that is fixed to clothing such as underwear and worn on the wearer's body, and absorbs and retains excrement, etc. Examples include menstrual sanitary napkins, sanitary pads (vaginal secretion pads), and the like. The absorbent article has a side facing the wearer (skin) and a side facing the clothing. The side opposite to the wearer is also called the skin side, skin contacting side or front side, and the opposite side to the clothing is also called the non-skin side, non-skin contacting side or back side . Moreover, the absorbent article has a longitudinal shape in a state in which individual packages are unwound and unfolded, and has a front part, a middle part and a rear part corresponding to the wearer's abdominal part, crotch part and back part. This shape has a length direction corresponding to the direction connecting the wearer's abdominal part, crotch part, and back part, and a width direction orthogonal to the length direction. Similarly, packaging materials have a length direction and a width direction when individual packages are unwound and unfolded. In individual packages, the length direction of the absorbent article and packaging material is consistent with the direction in which the absorbent article and packaging material are folded. Therefore, in an individual package, the length direction means the length direction of the absorbent article and the packaging material, and also means the direction in which the absorbent article and the packaging material are folded.

Hereinafter, the individual packaging body 30 of the menstrual sanitary napkin 10 (hereinafter also simply referred to as the sanitary napkin 10) will be explained assuming that the individual packaging body of this embodiment is used. In this embodiment, the front part, the middle part, and the rear part are shown with symbols F, C, and R, and the length direction and the width direction are also called the Y direction and the X direction.

As shown in Figures 1 and 2, the individual packaging body 30 of this embodiment is the menstrual sanitary napkin 10 and the packaging material 20, which are folded along two or more folding lines in the length direction (Y direction) of the menstrual sanitary napkin 10. Folded. Specifically, the menstrual sanitary napkin 10 and the packaging material 20 are folded along the folding lines L1 and L2 in the longitudinal direction of the menstrual sanitary napkin 10 including the middle portion C as the folded central portion 31 .

In this embodiment, the parts of the menstrual sanitary napkin 10 and the packaging material 20 before and after folding the central part 31 are respectively called the first folded end part 32 and the second folded end part 33. In addition, the continuous packaging material 20 is divided into the central folding part 31, the first folding end part 32, and the second folding end part 33, and is called the central packaging part 21, the first folding packaging part 22, and the second folding packaging part. twenty three.

The individual packaging body 30 has a folding structure that wraps the skin contact surface 10A of the sanitary napkin 10 . Specifically, in a state where the packaging material 20 covers the surface 10B of the sanitary napkin 10 facing the clothing, the skin contact surface 10A of the sanitary napkin 10 is set to the inside, the first folded end 32 is folded, and then the second folded end portion 32 is folded. 2. Fold the folded end 33 to its upper side. The skin contact surface 10A of the sanitary napkin 10 is not exposed but is covered. Here, in the thickness direction (Z direction) of the individual package 30, considering the state when being opened, the side to be opened is referred to as the upper side Z1, and the side opposite to the side to be opened is referred to as the lower side Z2. The upper side Z1 and the lower side Z2 represent the relative positional relationship in the thickness direction of the folded structure of the individual package 30 .

The length of the sanitary napkin 10 in the folded central portion 31 in the longitudinal direction (Y direction) is longer than the length of the sanitary napkin 10 in the first and second folded portions 32 and 33 in the longitudinal direction. In this case, the individual package 30 has a portion on the upper side Z1 of the folded center portion 31 that does not overlap with the portion of the first folded end portion 32 and the second folded end portion 33 . That is, it has a folded 3-layer structure and a 2-layer structure. The outer surface of the individual packaging body 30 has: an outer surface 51, which corresponds to the folded central part 31; an outer surface 52, which corresponds to the part of the first folded end part 32 that does not overlap the second folded end part 33; and an outer surface 53. , which corresponds to the second folded end 33 . However, in the individual packaging body 30, the folded length of the sanitary napkin 10 is not limited to this, and can be set in various ways.

The number of times of folding (the number of folding lines) and the position of the folding lines of the individual package 30 are not limited to the above-described embodiment, and can be set appropriately. For example, according to the length of the sanitary napkin 10 , the number of folds or the position of the fold line is set so as to form a folding structure that covers the skin contact surface 10A. Basically, regarding the laminate of the sanitary napkin 10 and the packaging material 20, it is preferable to set the number of folds and the position of the folding line so that the middle part C of the sanitary napkin 10 becomes the folded central part 31. For example, if the rear portion R is lengthened, such as a nighttime sanitary napkin, the rear portion R can be folded in half and folded in four as a whole.

Moreover, in this embodiment, the packaging material 20 is longer than the sanitary napkin 10, but it is not limited to this, and may be shorter than the sanitary napkin 10. Even in the case of being shorter, it is preferable to set the arrangement such that the packaging material 20 exceeds the end of the sanitary napkin 10 at the second folded end 33 on the upper side that is finally folded. In this case, the length of the packaging material 20 relative to the sanitary napkin 10 is insufficient at the first folded end 32 on the lower side, resulting in a partially uncovered portion. Therefore, when the packaging material 20 "covers" the surface 10B of the sanitary napkin 10 facing the clothing, it is not limited to covering the entire surface 10B of the sanitary napkin 10 facing the clothing. It also includes covering with a remaining part. situation.

Here, the outline of the packaging material 20 and the sanitary napkin 10 is demonstrated.

As shown in FIG. 3 , the packaging material 20 has a fusion layer 24 and an airtight layer 25 and is a member with high airtightness. The fusible layer 24 contains a fusible resin component and has a lower melting point than the airtight layer 25 . The fusion layer 24 and the airtight layer 25 can prevent mutual interface peeling by disposing an adhesive layer between them. The gas barrier property of the airtight layer 25 is relatively high, and the oxygen penetration is suppressed lower than that of the fusion layer 24 . Oxygen penetration can be measured based on the coulometric method or the differential pressure method. When measured by the differential pressure method, the oxygen penetration rate in an environment of 23°C is preferably 900 mL/m ² ∙day∙atm or less, more preferably 100 mL/m ² ∙day∙atm or less, and still more preferably It is 50 mL/m ² ∙day∙atm or less. In this embodiment, the packaging material 20 includes three layers in which both sides of the airtight layer 25 are covered with the fusion layer 24 . However, it is not limited to this, and it may be two layers of the fusion layer 24 and the airtight layer 25, or may have other lamination forms. In any case, the fusion layer 24 of the packaging material 20 is correspondingly disposed on the surface 10B of the sanitary napkin 10 facing the clothing.

As shown in FIG. 4 , the sanitary napkin 10 includes a front sheet 1 on the skin-contacting side facing the wearer, a back sheet 2 on the non-skin-contacting side facing the clothing, and a space between the two sheets. Liquid-retentive absorbent body 3. The front sheet 1 has liquid permeability for sending excretion liquid to the absorber 3, and the back sheet 2 has leakage resistance against excretion liquid. The front sheet 1 and the back sheet 2 have a size that covers both surfaces of the absorber 3 and extends toward the outside of the outer edge of the absorber 3 . Furthermore, side sheets 5 for preventing side leakage of excretion fluid are laminated on both sides of the skin-contact side of the front sheet 1 .

The sanitary napkin 10 shown in FIG. 4 is divided into three equal parts: a front part F, a middle part C, and a rear part R, and has a shape set for daily use or the like. The individual package 30 is not limited to this. For example, for night use, it may have a wide rear wing covering the buttocks, and the rear part R may be longer than the front part F and the middle part C.

In addition to the above-mentioned structure, the sanitary napkin 10 may also have other components. For example, a liquid-diffusing intermediate sheet may be disposed between the top sheet 1 and the absorber 3 . In addition, a pair of side wing parts may be provided at the position of the middle part C as one of the fixing means for clothing or the like. The side flaps may also be formed from the above-mentioned side sheets. Furthermore, it may also have a leak-proof groove formed by pressing from the front sheet 1 to the absorber 3, a plurality of embossings on the front sheet 1, etc.

The sanitary napkin 10 contains volatile components such as fragrances or cooling agents. The included position can be appropriately set according to the purpose, etc. However, from the viewpoint of preventing volatile components from diffusing to the outside as much as possible before use and fully exerting the effect during use, it is preferably included in the absorbent body 3 . It is preferable that at least the coating part of the liquid volatile component or the liquid containing the volatile component (sometimes simply referred to as the "volatile component coating part") is located in the absorber. Moreover, it is more preferable that the coating part of a volatile component is located in the thickness direction of the sanitary napkin 10 in the position which does not overlap with the fixing part 8 which is mutually spaced apart and arrange|positioned later.

In addition, the liquid system containing a volatile component refers to a coating liquid in which a volatile component and a solvent are mixed. As the above-mentioned solvent, various commonly used solvents can be used. Examples include dipropylene glycol, polypropylene glycol, triethyl citrate, and benzyl benzoate. The coating part of the volatile component is the part that initially contains the volatile component in the manufacturing process of the sanitary napkin 10 . Therefore, the coated portion of the volatile component is the portion of the sanitary napkin 10 that contains the most volatile components (the portion containing the largest basis weight).

The sanitary napkin 10 is attached to the non-skin side of the back sheet 2, that is, the side 10B facing the clothes, and has a plurality of fixing parts 8 for fixing the sanitary napkin 10 to the clothes. The so-called fixing part 8 is a device that is fixed to clothing when the sanitary napkin 10 is used, and has an adhesive force that is peelable and prevents the sanitary napkin 10 from shifting from the clothing. A plurality of fixing parts 8 are arranged spaced apart from each other on the non-skin side of the back sheet 2 . On the surface 10B facing the clothing, a portion where the fixing portion 8 is not arranged becomes a plurality of fixing portion non-arrangement portions 9 . The preferred arrangement of the fixing part 8 and the fixing non-arrangement part 9 will be described below.

These sanitary napkins 10 and packaging materials 20 are folded along the folding lines L1 and L2 (folded in the order of arrows S1 and S2 shown in Figure 4) with the front sheet 1 side as the inner side, and become the above-mentioned individual items. Packaging body 30.

Next, with reference to FIGS. 1 and 2 , the fusion sealing area 34 of the individual package 30 and the sealing and fixing area 36 of the opening 35 will be described.

The individual packaging body 30 is located outside both sides of the sanitary napkin 10 in the length direction (outside the ends in the width direction (X direction)) and has a pair of fusion sealing areas 34 formed by joining the folded packaging materials 20 . The fusion sealing area 34 has a portion obtained by laminating two sheets of the packaging material 20 and a portion obtained by laminating three sheets according to the overlapping number of the folded center portion 31 , the first folded end portion 32 and the second folded end portion 33 . In the fusion sealing area 34, regardless of the number of overlapping pieces of the packaging material 20, the fusion layers 24 of the folded packaging material 20 are fused and joined to each other in opposite directions. Thereby, the joint strength of the fused parts is improved compared with the case of joining with an adhesive. However, the bonding strength of the fusion sealing area 34 is set to a level that can be peeled off by the force exerted when the individual packages 30 are opened.

In the fusion sealing area 34 , the fusion layers 24 of the packaging material 20 can be fused together by various commonly used methods. Examples include thermal embossing treatment, ultrasonic embossing treatment, corona treatment, and plasma treatment. Among them, when fusion bonding is performed by thermal embossing, the peel strength or air tightness can be adjusted to a desired range by adjusting the embossing shape or size, and further can be performed by performing corona treatment or plasma treatment. It is better to improve the adhesion of the fusion joint.

The individual packaging body 30 has an opening 35 at an overlapping portion of the first and second folded end portions 32 and 33 . The opening 35 is formed by stacking the extended portion 23A of the second folded packaging portion 23 of the upper second folded end portion 33 that is longer than the sanitary napkin 10 and the first folded packaging portion 22 of the lower first folded end portion 32. part. At the opening 35 , the sealing fixing area 36 is arranged along the width direction (X direction) of the packaging material 20 . The sealing and fixing area 36 overlaps with a pair of fusion sealing areas 34 and 34 located on both sides of the individual package 30 when viewed from above, and extends inward in the width direction. In the sealing and fixing area 36, in the thickness direction of the individual package 30, the extended portion 23A of the second foldable package portion 23 is joined to the lower first foldable package portion 22 to an extent that they can be peeled off by force during opening. This joining can be performed by various methods. Like the fusion sealing area 34 , it may be bonded by thermal fusion or bonded by an adhesive.

The packaging material 20 near the opening 35 is provided with an opening marking tape 37 . The unsealing marking tape 37 can be arbitrarily arranged or may not exist. From the viewpoint of improving the unsealability, it is preferable to have the unsealing marking tape 37 . Moreover, instead of the unsealing marking tape 37, a protruding part (a pinching part) may be provided in a part of the packaging material 20 corresponding to the unsealing opening 35.

In the individual packaging body 30, the volatile components contained in the sanitary napkin 10 are prevented from leaking to the outside easily by the fusion sealing areas 34, 34 and the sealing fixing area 36 of the packaging material 20. In addition, the airtightness is improved by the airtight layer 25 of the packaging material 20 .

On the other hand, the individual packaging body 30 of this embodiment has a structure in which even if the volatile components contained in the sanitary napkin 10 volatilize, they are slowly released without causing the packaging material to break. This structure is realized by the structure shown below.

The individual packaging body 30 has a structure to discharge volatile gases of volatile components generated inside. The above structure is provided between the back sheet 2 (surface 10B facing the clothing) side of the sanitary napkin 10 on the outer surfaces 51, 52 and 53 of the individual packaging body 30 and the packaging material 20. This arrangement corresponds to a situation in which volatile components become volatile gases and tend to migrate from the inside of the package, where the gas concentration tends to be high, to the back sheet 2 and fixing portion 8 side of the sanitary napkin 10 on the atmospheric side.

5 to 9 show the first to third embodiments of a structure for discharging volatile gases of volatile components. The first embodiment has the following structure (A1). (A1) has the following structure: the fixing portion non-arrangement portion 9 of the sanitary napkin 10 has a portion extending in the width direction, a gas release portion 341 is arranged in the fusion sealing area 34 of the packaging material 20, and the fixing portion non-arrangement portion The portion of 9 extending in the width direction communicates with the gas release portion 341 of the fusion sealing region 34 in the width direction. The second embodiment has the following structure (A2). (A2) has the following structure: the fixing portion non-arrangement portion 9 of the sanitary napkin 10 has a portion extending in the length direction, a gas release portion 361 is arranged in the sealing and fixing area 36 of the packaging material 20, and the fixing portion non-arrangement portion The portion of 9 extending in the length direction communicates with the gas release portion 361 of the sealing and fixing area 36 in the length direction. The third embodiment includes both (A1) and (A2) above.

First, the structure (A1) of the first embodiment for realizing the exhaust of volatile gas will be described with reference to FIGS. 5(A) to (C).

In the first embodiment, the fixing portion 8 is located on the surface 10B facing the clothing, has a length extending in the width direction, and is spaced equidistantly from each other in the length direction and is arranged with a plurality of them (Fig. 5(A)). In the area 85 where a plurality of fixing parts 8 are intermittently arranged, a fixing part non-arrangement part 9 is arranged between adjacent fixing parts 8 . The fixing part non-arrangement part 9 extends in the width direction along the fixing part 8 (hereinafter, the part extending in the width direction is called a fixing part non-arrangement part 91 to distinguish it from other parts). In addition, on the surface 10B facing the clothes, there is a pair of fixing part non-arrangement parts 9, 9 (hereinafter, this part is distinguished from other parts and referred to as the fixing part non-arrangement part 92), which is equal to the arrangement. The outer side in the width direction of the area 85 having the fixing portion 8 has a specific width and extends in the length direction.

In the individual packaging body 30 , the fixing part 8 and the fixing part non-arrangement part 9 are located on the outer surface side of the folded structure of the individual packaging body 30 in a state covered by the packaging material 20 . Specifically, in the folded central portion 31, as shown in FIG. 5(B), the entire outer surface 51 of the individual package 30 is alternately arranged in the length direction (folding direction) and extends in the width direction. The fixing part 8 and the fixing part non-arrangement part 91. Furthermore, a fixing portion non-arrangement portion 92 is arranged between the width direction outermost end portion 85A of the region 85 in which the fixing portion 8 is arranged and the width direction innermost end portion 34A of the fusion sealing area 34 . As for the first and second folded end portions 32 and 33, similarly, as shown in Fig. 5(C), there is a region 85 where the fixing portion 8 is arranged on the respective outer surfaces 52 and 53, and the fixing portion 8 is arranged on the respective outer surfaces 52 and 53. part non-arrangement part 91 and fixing part non-arrangement part 92. Regarding any of the outer surfaces 51 , 52 and 53 , the fixing part 8 , the fixing part non-arrangement part 91 and the fixing part non-arrangement part 92 are all covered by the packaging material 20 . The fixing part 8 is detachably joined to the packaging material 20. The fixing part non-arrangement part 91 and the fixing part non-arrangement part 92 are not joined to the packaging material 20, and a space is formed between the two components. That is, in the area 85 where the fixing part 8 is arranged, the fixing part non-arrangement part 91 extending in the width direction of the fixing part non-arrangement part 9 is intermittently generated in the length direction in the width direction. Extended breathable path 911. In addition, on the outside of the width direction of the area 85 where the fixing part 8 is arranged, and corresponding to the fixing part non-arrangement part 92, a pair of ventilation paths 921, 921 extending in the length direction and connected to the fusion sealing area 34 are generated. .

The breathable paths 911 and 921 are located in areas within the individual packaging bodies 30 where volatile gases of volatile components tend to accumulate, and serve as passages for the volatile gases.

In the first embodiment, the individual packaging body 30 has the following structure (A1) for discharging the volatile gas of the volatile component using the ventilation path 911 of the fixing portion non-arrangement portion 91 extending in the width direction. The fusion sealing area 34 is present at the end of the width direction through the air permeable path 911 generated in the fixing portion non-arrangement portion 91 , and has a gas release portion 341 . The fixing part non-arrangement part 91 and the gas release part 341 are covered by the highly airtight packaging material 20 to form a continuous space, and have a structure that guides the volatile gas of the volatile component toward the outside in the width direction. Thereby, a structure (A1) is formed in which the fixed portion non-arrangement portion 91 extending in the width direction and the gas release portion 341 of the fusion sealing region 34 are connected in the width direction. This structure (A1) is arranged on the surface 10B of the sanitary napkin 10 facing the clothing and on the outer surfaces 51, 52 and 53 of the individual packaging body 30. The above "connection" means that the generated gas can move along the structure (A1) in the individual package 30 and be discharged to the outside (hereinafter, for the structure (A2) of the second embodiment and the structure (A1) of the third embodiment ) and (A2) are also the same).

As shown in the enlarged views in the circles of FIGS. 5(B) and 5(C) , the gas release portions 341 of the fusion sealing areas 34 and 34 on the left and right sides are formed in a plurality of fusion portions arranged in the fusion sealing area 34 between 342. Specifically, the plurality of fused portions 342 are arranged spaced apart from each other in the longitudinal direction of the sanitary napkin 10 , and the spaced portions of the arrangement become the gas release portions 341 . In the gas release part 341, the packaging materials 20 are not fused to each other and are in a state where the gap can be opened and closed. The gas release portion 341 is between the fusion portions 342 and the packaging materials 20 are not fused to each other, so they can be opened by the pressure of the guided volatilized gas. In this way, the gas release portion 341 of the fusion sealing area 34 functions with the pressure of the volatile gas, thereby realizing gradual exhaustion of the volatile gas.

Regarding the structure (A1), from the viewpoint of expressing the above-mentioned exhaust gas more favorably through communication, it is preferable that the volatile gas flows along the fixing part non-arrangement part 91 and the volatile gas flows along the gas release part 341 The direction of flow is the same. Furthermore, it is more preferable that the gas release portion 341 is present near the extension line of the fixing portion non-arrangement portion 91 , and further preferably, at least one gas release portion 341 is present on the extension line of the fixing portion non-arrangement portion 91 .

In this structure (A1), the exhaust gas of the volatile component to the outside in the width direction can generate a pressing force on the packaging material 20 in the form of a driving force, for example. For example, when a crushing force is applied inwardly from the outer surfaces 51, 52, and 53 of the individual packaging body 30, the volatile gases of the volatile components accumulated on the surface 10B of the sanitary napkin 10 facing the clothing are pushed along the fixing portion. The non-arrangement portion 91 is guided in the width direction. By the pressure of the guided volatile gas, the gas release portion 341 of the fusion sealing area 34 is opened, and the volatile gas is slowly released (arrows shown in Figures 5(B) and (C)). This prevents the volatile gases of volatile components from being stored in the individual packaging bodies 30 excessively, thereby suppressing rupture.

From the viewpoint of further improving the gradual venting property, it is preferable that a plurality of rows of fused portions 342 are arranged in the width direction of the sanitary napkin 10 . Along the row of fusion portions 342 arranged in the width direction, the gas release portion 341 has a specific length, which can better control the exhaust amount of volatile gas. In this case, in each row of the fused portions 342 arranged in the length direction, the rows of the fused portions 342 can be arranged at the same spacing (Fig. 6(A)) or at different spacings (Fig. 6(B)). . In the case of different distances, the above-mentioned distances should be set appropriately so that the communication mechanism can be maintained and the gas release amount can be better controlled.

Furthermore, it is preferable that there are ventilation paths 921 and 921 connected to the fusion sealing area 34 and extending in the longitudinal direction corresponding to the fixing portion non-arrangement portion 92 on the width direction outer side of the area 85 where the fixing portion 8 is arranged. Thereby, the volatile gas from the ventilation path 911 extending in the width direction of the fixing portion non-arrangement portion 91 can be temporarily stored, and the volatile gas can be dispersed in the length direction and evenly discharged throughout the fusion sealing area 34 . Thereby, excessive pressure is not easily applied to the fusion sealing area 34 , cracking can be suppressed more efficiently, and volatile gases can be gradually exhausted.

Furthermore, from the viewpoint of better controlling the amount of gas release, it is preferable that the distance (H1) between the gas release parts 341 arranged in the fusion sealing area 34 is smaller than the distance (H2) between the fixing parts 8 and 8 . The "spacing between gas release parts 341" mentioned here refers to the length of each gas release part 341 in the longitudinal direction, and refers to the length in the longitudinal direction of the fusion parts 342 and 342 separated in the longitudinal direction. . The so-called "spacing between the fixing parts 8, 8" refers to the length in the longitudinal direction between the fixing parts 8, 8 that are spaced apart in the longitudinal direction, and refers to the non-arrangement portion of each fixing part extending in the width direction. The length in the longitudinal direction of 91 (the width of the breathable path 911). In addition, the distance (H1) between the gas release portions 341 is grasped as a value at least at the innermost end portion 34A in the width direction of the fusion sealing region 34. Thereby, the gas release part 341 can store the volatile gas moving along the fixing part non-arrangement part 91 within an allowable range and suppressively discharge it.

The ratio (H1/H2) of the distance (H1) between the gas release parts 341 arranged in the fusion sealing area 34 to the distance (H2) between the fixing parts 8 and 8 is from the viewpoint of improving the exhaustability of volatile gases. , preferably 1/10 or more, more preferably 1/5 or more. Moreover, from the viewpoint of preferably suppressing the amount of gas release, the above-mentioned ratio (H1/H2) is preferably 4/5 or less, and more preferably 7/10 or less.

From the viewpoint of improving the exhaust of volatile gas to avoid rupture, the distance (H1) between the gas release parts 341 is preferably 0.3 mm or more, and more preferably 0.5 mm or more. Moreover, from the viewpoint of gradually exhausting the gas and maintaining the effect of volatile components, the distance (H1) between the gas release portions 341 is preferably 1.0 mm or less, more preferably 0.8 mm or less. From the viewpoint of increasing the exhaust of volatile gases to avoid rupture, the distance (H2) between the fixing portions 8 and 8 is preferably 0.75 mm or more, more preferably 1.0 mm or more. Furthermore, from the viewpoint of suppressing the rupture of the fusion sealing region 34 due to an increase in the amount of movement of volatile gases, and from the viewpoint of maintaining the original fixation of the sanitary napkin 10 to clothing in the fixing portion 8, the fixing portion 8 8. The interval (H2) between 8 is preferably 3.0 mm or less, more preferably 2.5 mm or less.

From the viewpoint of gradually degassing and maintaining the effect of volatile components, the width (W1) of the fusion sealing area 34 having the gas release portion 341 in the width direction is preferably 2.5 mm or more, more preferably 4.0 mm or more. . Furthermore, from the viewpoint of improving the exhaust of volatile gas to avoid rupture, the width (W1) of the fusion sealing region 34 in the width direction is preferably 7.5 mm or less, more preferably 6.0 mm or less.

Next, the structure (A2) of the second embodiment for realizing the exhaust of volatile gas will be described with reference to FIGS. 7(A) to (C).

In the second embodiment, unlike the first embodiment, the fixing portions 8 have a length extending in the longitudinal direction of the sanitary napkin 10 and are arranged to be spaced apart from each other in the width direction. In FIG. 7(A) , two fixing parts 8 are spaced apart and arranged on the left and right in the width direction. Between the fixing parts 8, 8, a fixing part non-arrangement part 9 extending in the longitudinal direction is arranged (hereinafter, this part extending in the length direction is distinguished from other parts and is called a fixing part non-arrangement part). 93). The fixing part non-arrangement part 93 is arranged in the center part in the width direction. In addition, the number of the fixing part 8 and the fixing part non-arrangement part 93 is not limited to the aspect shown in FIG. 7(A), and can be set appropriately. In this case, it is preferable to arrange the fixing part non-arrangement part 93 at least near the center in the width direction.

In the individual packaging body 30, the fixing part 8 and the fixing part non-arrangement part 93 are covered with the packaging material 20, and the fixing part non-arrangement part 93 and the packaging material 20 are not joined and a space is formed. The space between the fixed portion non-arrangement portion 93 and the packaging material 20 is a breathable path 931 extending in the longitudinal direction (folding direction) on the outer surface side of the individual packaging body 30 . Like the first embodiment, the ventilation path 931 is located in an area where volatile gases of volatile components tend to accumulate in the individual packaging body 30, and serves as a passage for the volatile gases. The breathable path 931 formed by the fixed portion non-arrangement portion 93 and the packaging material 20 is continuous through the outer surface 51 of the folded central portion 31, the outer surface 52 of the first folded end portion 32, and the outer surface 53 of the second folded end portion 33. configured locally. Thereby, the volatile gas can move along the folding direction of the individual packaging body 30 (Fig. 7(B) and (C)).

In the second embodiment, the individual packaging body 30 has the following structure (A2) for discharging the volatile gas of the volatile component using the ventilation path 931 of the fixing portion non-arrangement portion 93 extending in the longitudinal direction. That is, the sealing and fixing area 36 exists at the point where the air permeability path 931 generated in the fixing portion non-arrangement portion 93 reaches the unsealing opening 35 of the second folded end portion 33 in the longitudinal direction, and the sealing and fixing area 36 has the gas release portion 361 (Figure 7(C)). The fixed part non-arrangement part 93 and the gas release part 361 are covered by the highly airtight packaging material 20 to form a continuous space, and have a structure that guides volatile gas from the sealed fixed area 36 to the outside in the longitudinal direction. Thereby, a structure is formed in which the fixing portion non-arrangement portion 93 extending in the longitudinal direction and the gas release portion 361 of the sealed fixing area 36 are connected in the longitudinal direction (A2). This structure (A2) is arranged from the outer surface 52 of the first folded end portion 32 through the outer surface 51 of the folded center portion 31 to the outer surface 53 of the second folded end portion 33.

In the structure (A2), as shown in FIG. 7(C) , the gas release portion 361 in the seal fixing area 36 is a portion that is not joined to the seal fixing area 36 extending in the width direction. More specifically, it is a portion where the extended portion 23A of the second foldable packaging portion 23 and the lower first foldable packaging portion 22 are not joined.

Regarding the structure (A2), from the viewpoint of better expressing the exhaust of volatile gas through communication, it is preferable that the volatile gas flows along the fixed portion non-arrangement portion 93 and the volatile gas is released along the gas direction. Part 361 flows in the same direction. Furthermore, it is more preferable that the gas release portion 361 is present near the extension line of the fixing portion non-arrangement portion 93 , and further preferably, at least one gas release portion 361 is present on the extension line of the fixing portion non-arrangement portion 93 . Specifically, as shown in FIG. 7(C) , it is preferable that the gas release portion 361 is present within the width direction range of the fixing portion non-arrangement portion 93 extending in the longitudinal direction. In addition, from the viewpoint of gradually discharging the volatile gas of the volatile component, it is more preferable that the width direction length (H3) of one gas release portion 361 is smaller than the width direction length of one fixing portion non-arrangement portion 93 (H4).

From the viewpoint of improving the exhaustability of volatile gases, the length (H3) in the width direction of one gas release portion 361 in the sealing fixed area 36 is determined by the length (H3) in the width direction of one fixing portion non-arrangement portion 93. The ratio (H3/H4) of (H4) is preferably 1/10 or more, more preferably 1/5 or more. Moreover, from the viewpoint of preferably suppressing the amount of gas release, the ratio (H3/H4) is preferably 4/5 or less, more preferably 7/10 or less.

From the viewpoint of improving the exhaust of volatile gas to avoid rupture, the length (H3) in the width direction of the gas release portion 361 is preferably 1.5 mm or more, and more preferably 3.0 mm or more. Furthermore, from the viewpoint of gradually exhausting gas while maintaining the effect of volatile components, the length (H3) in the width direction of the gas release portion 361 is preferably 10 mm or less, more preferably 7.5 mm or less. From the viewpoint of improving the exhaust of volatile gas to avoid cracking, the length (H4) in the width direction of the fixing portion non-arrangement portion 93 is preferably 10 mm or more, more preferably 15 mm or more. Furthermore, from the viewpoint of suppressing the rupture of the fusion seal area due to an increase in the amount of movement of volatile gases, and from the viewpoint of maintaining the original fixation of the sanitary napkin 10 to clothing in the fixing portion 8, the fixing portion is not The width direction length (H4) of the arrangement portion 93 is preferably 30 mm or less, more preferably 25 mm or less.

From the viewpoint of gradually degassing and maintaining the effect of volatile components, the longitudinal width (W2) of the sealing and fixing area 36 having the gas release portion 361 is preferably 0.5 mm or more, more preferably 1.0 mm or more. . In addition, from the viewpoint of improving the exhaust of volatile gas to avoid rupture, the width (W2) of the sealing fixing area 36 in the longitudinal direction is preferably 3.0 mm or less, more preferably 2.5 mm or less.

In this structure (A2), the exhaust gas of the volatile component to the outside in the longitudinal direction can generate a pressing force on the individual packaging body 30 in the form of a driving force, for example, as in the first embodiment. For example, when a crushing force is applied inwardly from the outer surface 53 of the second folded end portion 33, the volatile gases of the volatile components accumulated on the surface 10B of the sanitary napkin 10 facing the clothing are non-disposed along the fixing portion. The portion 93 is guided in the length direction. By the pressure of the guided volatile gas, the gas release portion 361 of the sealed fixed area 36 is opened, and the volatile gas is slowly released (arrow shown in FIG. 7(C) ). In conjunction with this, the volatile gas on the outer surface 51 side of the folded central portion 31 can slowly cross the folding line L2 and be discharged from the gas release portion 361 of the sealing and fixing area 36 (arrow shown in FIG. 7(B) ). Furthermore, the volatile gas on the outer surface 52 side of the first folded end portion 32 can slowly cross the folding lines L1 and L2 and be discharged from the gas release portion 361 of the sealing and fixing area 36 . Thereby, the volatile gas of the volatile component can be gradually discharged without being excessively stored in the individual packaging body 30, thereby suppressing the breakage of the individual packaging body 30.

In the aspect shown in FIG. 7(C) , the gas release portion 361 in the sealing fixing area 36 is arranged outside both sides of the unsealing marking tape 37 . Thereby, the unsealing marking tape 37 can suppress breakage of parts other than the gas release part 361, which is preferable. However, the gas release portion 361 in the sealing and fixing region 36 is not limited to this aspect, and may adopt various forms that can communicate with the fixing portion non-arrangement portion 93 . Alternatively, the opening marking tape 37 may not be provided. It is preferable that the gas release portion 361 in the sealing and fixing area 36 is present at least near the center in the width direction. For example, within a range that does not hinder the sealing function, as shown in FIG. 8 , a plurality of gas release portions 361 may be arranged along the sealing fixation area 36 except near the center in the width direction. Alternatively, the fixing portion 8 may be divided into a plurality of fixing portion non-arrangement portions 93 in the width direction and arranged in the width direction. According to this, the gas release portion 361 in the sealing fixing area 36 can be appropriately set within a range that does not hinder the sealing function.

Regarding the arrangement of the marking tape 37 for opening, the following aspect is preferred. That is, when volatile components are contained in the absorbent body 3 of the sanitary napkin 10, it is preferable that the fixed end 371 of the unsealing marking tape 37 is disposed in a position that does not overlap the absorbent body 3 of the sanitary napkin 10. The absorbent body 3 in this case refers to the absorbent body 3 located at the second folded end portion 33 where the fixed end 371 of the unsealing marking tape 37 is directly disposed. Thereby, the fixing force of the unsealing marking tape 37 can be maintained without being affected by the effect of the volatile gas of the volatile component in the absorber 3 . In addition, it is preferable to arrange the free end 372 of the unsealing marking tape 37 in a position overlapping the absorbent body 3 of the sanitary napkin 10 . The absorbent body 3 in this case refers to the absorbent body 3 located at the first folded end portion 32 where the free end 372 of the unsealing marking tape 37 is directly disposed. Thereby, the free end 372 of the unsealing marking tape 37 is affected by the action of the volatile gas of the volatile component in the absorber 3, and the fixing force is reduced, thereby improving the unsealing operability.

Next, the structure of the third embodiment for realizing the exhaust of volatile gas will be described with reference to FIGS. 9(A) to (C).

The third embodiment has the structure (A1) of the first embodiment and the structure (A2) of the second embodiment. That is, on the surface 10B of the sanitary napkin 10 facing the clothing, the fixing portion 8 extending in the width direction is divided into a plurality of pieces in the width direction and arranged at intervals. This arrangement is spaced equally apart from each other in the length direction and a plurality of them are arranged. Thereby, in the area 85 where the plurality of fixing parts 8 are arranged, the fixing part non-arrangement part 91 extending in the width direction and the fixing part non-arrangement part 93 extending in the longitudinal direction are arranged. In addition, there is a fixing portion non-arrangement portion 92 outside the area 85 in which the fixing portion 8 is arranged in the width direction. The fixing portion non-arrangement portion 92 has a specific width and extends in the longitudinal direction.

Thereby, the structure (A1) in which the fixing part non-arrangement part 91 extending in the width direction communicates with the gas release part 341 in the fusion sealing area 34, the fixing part non-arrangement part 93 extending in the length direction and the seal The two structures (A2) in which the gas release portion 361 in the fixed area 36 is connected exist in combination. Furthermore, structure (A1) and structure (A2) intersect and are connected to each other. Therefore, in the third embodiment, the structure (A1) and the structure (A2) can be related to each other so that the volatile gas of the volatile component can be discharged more efficiently. Thereby, the breakage of individual packaging bodies 30 can be better suppressed. In addition, the fixed portion non-arrangement portion 92 can temporarily store the volatile gas as described above, disperse it in the length direction, and evenly discharge it throughout the entire fusion sealing area 34, thereby contributing to gradual exhaustion.

In the third embodiment, the number and arrangement of the fixing part non-arrangement part 91 and the fixing part non-arrangement part 93 are not limited to those shown in FIG. 9 , and various settings can be made.

Even if the individual packaging body 30 of this embodiment has any of the above-described first to third embodiments, the volatilized gas of the volatile component can be slowly discharged without causing the packaging material to break. In addition, as the individual packaging body 30 itself is less likely to swell, the disappearance of volatile components can be suppressed and the hygienic state of the packaging material can be maintained.

In the individual packaging body 30 of this embodiment, the packaging material 20 is preferably one in which the surface of the fusion layer 24 has been peeled (having a peeling layer). Thereby, the packaging material 20 can directly contact the fixing portion 8 of the surface 10B of the sanitary napkin 10 facing the clothes without interposing the release paper, so that the surface of the fusion layer 24 can directly contact the fixing portion 8 of the sanitary napkin 10 (so that the fixing portion 8 faces the release treatment layer). configuration). Volatile components become volatile gases and evaporate toward the atmosphere from the inside of the package where the gas concentration tends to be high, and the gas tends to accumulate in the space between the sanitary napkin 10 and the packaging material 20 of the individual package 30 . By directly contacting the packaging material 20 with the fixing portion 8 of the sanitary napkin 10 without interposing the release paper, gas accumulation between the packaging material 20 and the release paper can be avoided. Thereby, the expansion of the individual packaging bodies 30 caused by the volatile gas can be further suppressed. Furthermore, the gas release part 361 of the sealed fixed area 36, the fixed part non-arrangement parts 91, 92 and 93 formed between the sanitary napkin 10 and the packaging material 20, and the gas release part 341 of the fused sealing area 34 are in the same place. Surface continuity will provide better connectivity and is therefore preferred. In addition, in the gas release portion 341 of the fusion sealing area 34 and the gas release portion 361 of the sealing fixation area 36, it is preferable that the fusion layers 24 of the packaging material 20 are not in close contact with each other so that smooth opening and closing can occur.

In individual packaging bodies 30, the bulk and softness of the packaging material 20 is preferably 13 cN or more. Thereby, the packaging material 20 has the rigidity to suppress expansion caused by the pressure of volatile gas. From this point of view, the bulk and softness of the packaging material 20 is more preferably 20 cN or more, and more preferably 40 cN or more. In addition, the bulk and softness of the packaging material 20 is preferably 75 cN or less, more preferably 65 cN or less, and still more preferably 60 cN or less from the viewpoint of ease of taking out the sanitary napkin 10 from the individual packaging body 30 . In the case where the bulk and softness are different in the machine direction (MD, Machine Direcion (machine direction)) and the width direction (CD, Cross Direction (CD)) of the packaging material 20, it is preferred that the bulk is at least loose in either direction. The thickness and softness satisfy the above range.

(Measurement method of bulk and softness of packaging material 20) The method of measuring bulk and softness in the machine flow direction is as follows. Cut the packaging material 20 to a size of 30 mm along the machine flow direction and 150 mm along the width direction to obtain a rectangular test piece. From this test piece, a cylinder with a diameter of 45 mm and a short side direction (direction of 30 mm) equal to the height was produced. The overlap width of the cylinder in the circumferential direction is set to approximately 10 mm. Use MAX's stapler HD-10D and staple No. 10-1M to fix the upper and lower ends of the overlapping parts. The maximum load when the cylindrical measurement sample obtained in this way is compressed in the height direction of the cylinder is measured with a compression testing machine, and the value is set as the value of bulk softness. The compression testing machine was model RTA-100 (trade name) manufactured by Orientec Co., Ltd. The compression speed is set to 10 mm/min. On the other hand, the bulk and softness in the width direction was determined by cutting the packaging material 20 into 30 mm along the width direction and 150 mm along the machine flow direction, using a rectangular test piece, and using the same method as above. method to measure.

In the individual packaging body 30, it is preferable that the coated portion of the volatile component does not overlap with the fixing portion 8 in the thickness direction of the sanitary napkin 10. Since the coated portion of the volatile component does not overlap with the fixing portions 8 , the volatile gas of the volatile component can easily diffuse from the back sheet 2 side to the fixing portion non-arrangement portion 9 between the fixing portions 8 . Thereby, the gradual exhaust gas using the above-mentioned structures (A1) and (A2) can be easily generated more effectively. In addition, the diffusion of volatile gas to the front sheet 1 side can be suppressed. Thereby, it is possible to suppress the decrease in absorbency of the front sheet 1 and irritation to the skin. Furthermore, in the sanitary napkin 10 as a product, liquid volatile components or liquid containing volatile components may seep out and spread in the portion overlapping the fixing part 8 . In this case, the diffusion suppression of the volatile gas by the fixing part 8 and the diffusion from the back sheet 2 side by the fixing part non-arrangement part 9 can be controlled according to the arrangement relationship between the fixing part 8 and the coating part. balance. That is, the effect of utilizing volatile components can be better maintained and the breakage of the individual packages 30 can be suppressed.

In addition, from the viewpoint of more effectively preventing breakage, the individual packaging body 30 preferably has the structure shown below. The individual packaging body 30 preferably has at least one of the following structures, more preferably a combination of two or more structures, and still more preferably all of the structures.

First, it is preferable that the sanitary napkin 10 has a shape in which the width of the front end portion becomes narrower toward the front and rear ends in the longitudinal direction of each of the first and second folded end portions 32 and 33 (Fig. 10). Thereby, the area 27 in which the packaging materials 20 in which the sanitary napkin 10 is not arranged near the opening 35 (the first folding packaging part 22 and the second folding packaging part 23) face each other can be expanded. The opposing regions 27 of the packaging material 20 have low rigidity and become regions where volatile gases can be temporarily stored. Thereby, even if the gas release rate is lower than the volatilization rate, the rupture of individual packages 30 can be suppressed.

Second, it is preferable to open the second folded end 33 of the individual package 30 on the upper side Z1 at a position corresponding to the longest distance between the longitudinal end of the sanitary napkin 10 and the unsealing end of the packaging material 20. There is no gas release portion 361 in the portion 351 of the port 35 (Fig. 10). In other words, the part 351 of the above-mentioned opening 35 is the part of the opening 35 corresponding to the following position, which is the hygienic position from the edge of the opening of the packaging material 20 to the second folded end 33 of the sanitary napkin 10 when the vertical line is drawn out. The longest distance from the point where the outer edge of cotton 10 intersects the vertical line. Preferably, in this part, the opening 35 is sealed and becomes a bag-shaped part that can temporarily store volatile gas. Thereby, the stored gas can be prevented from escaping into the atmosphere from the inside of the individual packaging body 30, and the volatile gas can be pre-stored to a specific concentration in the relatively low-rigidity area 27 where the sanitary napkin 10 is not arranged. Maintaining a specific concentration and reaching an equilibrium state in area 27 can suppress the volatilization of volatile components.

Third, it is preferable that in the overlapping portion of the first folded end portion 32 and the second folded end portion 33, there is no imaginary line K1, K2 drawn along both sides of the sanitary napkin 10. Area 27 of sanitary napkin 10 (Figure 10). As mentioned above, the region 27 is a region with low rigidity and can temporarily store volatile gases, thereby suppressing expansion and rupture of the individual packages 30 .

Fourth, it is preferable that the fixing portion 8 is not disposed at the longitudinal end of the sanitary napkin 10 in each of the first folded end portion 32 and the second folded end portion 33 (Fig. 10). The "longitudinal ends of the sanitary napkin 10" mentioned here refer to the longitudinal front and rear end areas of the front part F and the rear part R of the sanitary napkin 10. There is no fixed part in this part, so a space can be formed between the packaging material 20 (second folded packaging part 23) and the sanitary napkin 10, and the volatile gas can be stored to a specific concentration and brought into an equilibrium state, thereby suppressing Evaporation of volatile components. Furthermore, in the vicinity of the space in the longitudinal end region of the sanitary napkin 10, the sanitary napkin 10 and the packaging material 20 are in close contact with each other through the fixing portion 8, so the space is very small and expansion is suppressed. Therefore, in the space at the longitudinal end region of the sanitary napkin 10, the gas concentration is likely to become high density. On the other hand, in the adjacent space region where the sanitary napkin is not separated and the packaging materials 20 overlap each other (for example, the area in FIG. 10 27) In contrast, a larger space is formed to thin the gas concentration, thereby creating a gas concentration difference. Thereby, it is easy to exhaust gas from the gas release part 341 or 361 from the longitudinal end area of the sanitary napkin 10 through the space area where the surrounding packaging materials 20 overlap each other.

Regarding the above, it is preferable that the fixing portion 8 is located in a region corresponding to the arrangement of the absorbent body 3 in the surface 10B facing the clothing. Thereby, when the sanitary napkin 10 is used, the thickness of the absorbent body 3 can improve the fixability to clothing in the portion where the rigidity of the sanitary napkin 10 is increased. In addition, in the individual packaging body 30, the relatively soft portion of the sanitary napkin 10 other than the portion with increased rigidity becomes the fixing portion non-arrangement portion 94 (Fig. 10). Thereby, when the fixed part non-arrangement part 94 temporarily stores the volatile gas of a volatile component in the space between the packaging materials 20, it can realize moderate swelling suppressing the influence of the rigidity of the absorber 3, and Easily avoids breakage.

Fifth, the sanitary napkin 10 preferably has the structure of the front sheet 1 , the back sheet 2 and the absorbent body 3 , and the volatile component is placed in the absorbent body 3 . Thereby, excessive diffusion of volatile gas can be suppressed in the folded individual packages 30 . In addition, the volatility of volatile components can be suppressed. In addition, since the volatile components are located in the middle of the thickness of the sanitary napkin 10, the volatile gas is likely to move toward the back sheet 2 side.

From the viewpoint of further improving the above effect, the absorbent body 3 containing volatile components is preferably as shown in FIG. 11 and includes a central absorbent sheet 3A and a main absorbent sheet covering the central absorbent sheet 3A. 3B. The central absorbent sheet 3A has its two ends in the width direction overlapped and folded in three, and the main absorbent sheet 3B has its two ends in the width direction overlapped and folded in three so as to wrap around it. . If the structure in which the absorbent body 3 is laminated in multiple layers is adopted, the volatilization of volatile components can be more effectively suppressed in the folded structure of the individual packaging bodies 30 . In particular, in the laminated structure of the absorber 3, it is preferable that the volatile component is arranged in the central absorbent sheet 3A. It is preferable that at least the coated portion of the volatile component is located in the central absorbent sheet 3A.

Sixth, it is preferable that the absorber 3 has a shape in which the width of the absorber 3 becomes narrower toward the front end in the longitudinal direction of the sanitary napkin at each of the first and second folded end portions 32 and 33 (Fig. 10). Thereby, the area 28 where the absorber 3 is not arranged near the opening 35 can be expanded, and the volatile gas can be temporarily stored to suppress expansion and rupture of the individual packages 30 .

Seventh, it is preferable that the fixing portion 8 is not arranged in the region 28 where the absorber 3 is not arranged in each of the first and second folded end portions 32 and 33 (Fig. 10). Thereby, the above-mentioned volatile gas can be temporarily stored, further improving the effect of suppressing expansion and rupture of individual packages 30 .

Furthermore, in the absorbent article (sanitary napkin 10), if the volatile component is arranged in the central area in the width direction . In addition, the arrangement of the above-mentioned volatile components is preferable from the viewpoint of suppressing excessive evaporation of volatile components when the individual package has the structure (A1), and when the individual package has the structure (A2), it is preferable from the viewpoint of suppressing excessive evaporation of the volatile components. It is better from the perspective of connectivity of the release department. In particular, when the volatile component is a cooling agent, it is preferable because the absorbent article can selectively provide a cooling effect while avoiding parts sensitive to stimulation such as the groin. In addition, the volatile components are arranged in the central area in the width direction of the above-mentioned absorbent article (sanitary napkin 10) so as to overlap with the fixing portion non-arrangement portion 9 in a plan view. In individual packages, volatile gases tend to escape toward the gas. The release part moves, so it is better. In addition, the central area in the width direction refers to the area located in the center when the absorbent body of the absorbent article is equally divided into three parts in the width direction.

On the other hand, in order to exert the effect of the volatile components over a wide range in the above-mentioned absorbent article, the volatile components may also be arranged along the longitudinal direction Y. However, from the viewpoint of suppressing excessive evaporation of the volatile components, That is, it is preferable to arrange it at least in the middle part. In particular, when the volatile component is a cooling agent, it is preferable because it can selectively bring a cooling effect to the wearer's excretion part and its vicinity. When the fixing portion 8 and the fixing portion non-arrangement portion 9 are alternately arranged in the length direction like the structure (A1) shown in FIG. Arranged in an overlapping manner. Even with such a structure, in individual packages, the volatile gas moves toward the gas release portion through the fixing portion non-arrangement portion 9, thereby exerting the above-described effects of the present invention.

The materials used to form the sanitary napkin 10 and the packaging material 20 constituting the individual packaging body 30 can be used without particular restrictions, and those used in such articles can be used.

As the fusion layer 24 constituting the packaging material 20, various materials that can form the fusion sealing area 34 can be used without particular limitation. For example, it can be formed using a polyolefin-based polymer resin such as polyethylene resin or polypropylene resin. Examples include polyethylene [linear low-density polyethylene (L-LDPE), low-density polyethylene (LDPE)], polypropylene, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EA), One of styrene-isoprene copolymer (SIS), styrene-butadiene copolymer (SBS), olefin elastomer, etc. or a mixture thereof. The fusion layer 24 is composed of a single layer film or a laminated film of these materials. In addition, when the fixing part 8 of the sanitary napkin 10 and the packaging material 20 are releasably joined, the fusion layer 24 is peeled off. However, since the fusion layer 24 is required to have heat resistance, it is preferable to use the fusion layer 24 Heat-resistant resins such as polyethylene or polypropylene with a density of 0.93 g/cm3 ^or above. In addition, surface treatment such as corona discharge treatment can also be performed on the fusion layer 24 to improve the adhesion with the peeling layer. Use a stripper such as silicone in the stripping process. In order to apply the release agent uniformly without unevenness, the average surface roughness (Ra) of the fusion layer 24 is preferably 0 to 10 μm, particularly preferably 0 to 5 μm. In addition, polyethylene or polypropylene also has excellent water resistance, so it can also protect the water absorption performance of the super absorbent polymer included in the sanitary napkin 10 . As the airtight layer 25, various materials that can maintain the airtightness of individual packages can be used without particular limitation. For example, in addition to using polyvinyl alcohol, ethylene vinyl alcohol copolymer, polyvinylidene chloride, extended polyethylene terephthalate and extended polyamide, aluminum foil laminates or coatings with volatile impermeable paints can be used. Covered with a polymer film, or used in combination.

As the volatile components contained in the sanitary napkin 10, various volatile components commonly used in absorbent articles can be used. Examples include fragrances and cooling agents. As a cold-sensing agent, various chemical agents that can change the temperature on the skin and/or mucous membrane surface without stimulating the temperature receptors of the wearer's skin and/or mucous membrane surface can be used to deliver a refreshing feeling to the wearer. Examples include cyclohexyl derivatives, cyclohexanol derivatives, formamides, and the like described in paragraphs [0006] to [0086] of Japanese Patent Application Laid-Open No. 2015-12918. Among them, water-insoluble ones are preferred from the viewpoint of the refreshing feeling caused by the fragrance, quick effect, and sustainability. As water-insoluble ones, menthyl lactate and menthol are preferred. The cooling agent can be included in the sanitary napkin 10 through various methods. For example, it may be included in the sanitary napkin 10 in a state of being dissolved in a solvent, or it may be included in the sanitary napkin 10 without using a solvent. In addition, the cooling agent may be included in the sanitary napkin 10 by being encapsulated in a delivery device such as microcapsules.

As the absorbent body 3, various forms commonly used in absorbent articles can be adopted without particular limitation. For example, it may be a fiber stack in which hydrophilic fibers are covered with a hydrophilic coating sheet, or a mixed fiber stack in which hydrophilic fibers and a highly absorbent polymer material are used. Alternatively, it may be composed of a thin absorbent sheet in which a highly absorbent polymer material is sandwiched and fixed between two sheet-like fiber layers containing hydrophilic fibers (the above-mentioned central absorbent sheet 3A and the main body) Absorbent sheet 3B). When forming an absorbent sheet, the superabsorbent polymer can be integrated using the adhesive force due to moisture or additionally added adhesives such as adhesives or adhesive fibers. Production can be carried out by various methods commonly used, and can also be carried out by either wet or dry methods. The thickness of the absorbent sheet is controlled to less than 3.0 mm and the highly absorbent polymer materials are dispersed in the plane direction of the sheet. Therefore, colloid agglomeration is less likely to occur and has higher absorbency. Examples thereof include those described in paragraphs [0019] to [0131] of Japanese Patent Application Laid-Open No. 8-246395.

Examples of the hydrophilic fibers constituting the absorbent body 3 include those obtained by subjecting hydrophobic fibers to hydrophilization treatment and those that are themselves hydrophilic. Particularly preferred are those that are hydrophilic and have water retention properties. Preferred examples of the latter hydrophilic fiber include natural fibers, cellulose-based regenerated fibers, and semi-synthetic fibers. As the hydrophilic fiber, pulp and rayon are particularly preferred, and pulp is more preferred. Furthermore, cross-linked cellulose fibers obtained by cross-linking intramolecular and/or intermolecular cellulose fibers or bulky cellulose fibers obtained by mercerizing wood pulp may also be used. Examples of pulp include, but are not limited to, wood pulp such as coniferous tree kraft pulp or broadleaf tree kraft pulp, wood pulp such as kapok pulp, or natural cellulose fibers such as rice straw pulp. One or more types of pulps may be used.

Examples of the highly absorbent polymer material constituting the absorbent body 3 include water obtained by polymerizing a water-soluble ethylenically unsaturated monomer containing acrylic acid or an acrylic acid salt as a main component and optionally adding a cross-linking agent. Gel material. In addition, cross-linked products of polyethylene oxide, polyvinylpyrrolidone, sulfonated polystyrene and polyvinylpyridine, saponified products of starch-poly(meth)acrylonitrile graft copolymer, starch-polymer (Meth)acrylic acid graft copolymer, and hydrolyzate of starch-poly(meth)acrylate graft copolymer, etc. One type of these highly absorbent polymer materials may be used alone, or two or more types may be used in combination. Preferably, it is one that can absorb and retain more than 20 times its own weight in liquid and can gel. The shape of the highly absorbent polymer material can be any shape used in absorbers without particular limitation. Examples include spherical, granular, fibrous, bag-shaped, and block-shaped.

Various liquid-permeable sheets can be used as the front sheet 1 . Considering the excellent skin touch, hydrophilic non-woven fabric is preferred, thermal bonding non-woven fabric is more preferred, and hot-air non-woven fabric is particularly preferred. Preferred are hydrophilic-treated thermoplastic resin fibers and fibers obtained by subjecting the fibers to three-dimensional crimping such as double crimping or triple crimping. Specifically, various hydrophilizing agents are applied at the stage before polyethylene, polypropylene, polyester, nylon and composite fibers are made and cut into specific lengths to form short fibers. As the hydrophilizing agent, various alkane sulfonates represented by α-olefin sulfonate, acrylates, acrylate/acrylamide copolymers, esteramides, salts of esteramides, polyethylene glycol and Hydrophilization treatment of commonly used hydrophilizing agents such as its derivatives, water-soluble polyester resins, various silicone derivatives, various sugar derivatives and mixtures thereof.

As the back sheet 2, various sheets having leak-proof properties can be used. For example, a separate non-moisture-permeable or moisture-permeable film, or a film and a non-woven fabric bonded together, and a water-repellent non-woven fabric (SMS (Spunbond-meltblown-Spunbond, spunbond-meltblown-spunbond)) or SMMS (Spunbond-meltblown-meltblown-Spunbond, spunbond-meltblown-meltblown-spunbond), etc.). In terms of cost or matching with the anti-offset adhesive, it is best to use a separate non-moisture-permeable film as the leak-proof material. Examples of the moisture-permeable film material in this case include a film obtained by melting, kneading and extruding a thermoplastic resin and an inorganic filler that is incompatible with the thermoplastic resin and stretching it in a specific dimension to open micropores, or a film that contains moisture in nature. It is a non-porous membrane that has high compatibility and can discharge water vapor like a permeable membrane.

Regarding the above embodiment, the present invention further discloses the following individual packaging bodies for absorbent articles.

＜1＞ An individual package of absorbent articles, including an absorbent article having a length direction corresponding to a direction connecting the wearer's abdomen, crotch, and back, and orthogonal to the length direction. in the width direction, and contains volatile components; and a packaging material that covers the surface of the absorbent article facing the clothing; and the above-mentioned individual packaging body has the following folding structure, that is, the above-mentioned absorbent article and the above-mentioned packaging material Fold together along two or more folding lines in the above-mentioned length direction, so that the skin of the above-mentioned absorbent article is in contact with the skin; and the above-mentioned packaging material has a structure in which a fusion layer and an airtight layer are laminated, and is folded The above-mentioned packaging material is provided with: a pair of fusion sealing areas, which are formed by joining the fusion layers facing each other on both sides of the longitudinal direction of the absorbent article; and a sealing fixing area, which is arranged on the above-mentioned individual packaging body. The opening of the folded structure; and on the surface of the above-mentioned absorbent article facing the clothing, it has a plurality of fixing parts and fixing part non-arrangement parts covered by the above-mentioned packaging material, and the above-mentioned fixing parts are spaced apart from each other. Arrangement; and the individual packaging body of the above-mentioned absorbent article has at least one of the following structures (A1) and (A2); and the above-mentioned volatile component is a cooling agent. (A1) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the width direction, a gas release portion is arranged in the fusion sealing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the width direction communicates with the gas release portion of the fusion sealing region in the width direction. (A2) is a structure in which the fixing portion non-arrangement portion of the absorbent article has a portion extending in the longitudinal direction, a gas release portion is arranged in the sealing and fixing area of the packaging material, and the fixing portion is not The portion of the arrangement portion extending in the longitudinal direction communicates with the gas release portion of the sealing and fixing area in the longitudinal direction.

<2> The individual package of absorbent articles according to the above <1>, wherein the packaging material has a peeling layer on the surface of the fusion layer, and the fixing portion of the absorbent article and the peeling layer are arranged facing each other. . <3> The individual packaging body of absorbent articles as described in <1> or <2> above, which has the structures of (A1) and (A2). <4> The individual packaging body of absorbent articles according to any one of the above <1> to <3>, wherein the packaging material has a bulk softness of 13 cN or more. <5> The individual package of absorbent articles according to any one of the above <1> to <4>, wherein the coated portion containing at least the volatile component is not located in the thickness direction of the absorbent article. Overlapping with the above-mentioned fixing part. <6> The individual package of absorbent articles according to any one of the above <1> to <5>, wherein the fixing portions are intermittently arranged in the longitudinal direction, and between adjacent fixing portions The above-mentioned fixed portion non-arrangement portion is arranged. <7> The individual package of absorbent articles according to any one of the above <1> to <6>, wherein the distance between the gas release parts arranged in the fusion sealing region is smaller than the distance between the fixing parts. <8> The individual package of absorbent articles according to any one of the above <1> to <7>, wherein the outermost end in the width direction of the region where the fixing portion is arranged and the width direction of the fusion sealing region Between the innermost ends, the above-mentioned fixed portion non-arrangement portion is arranged. <9> The individual packaging body of the absorbent article according to any one of the above <1> to <8>, wherein a plurality of fusion portions are arranged in the above-mentioned fusion sealing area, and the above-mentioned fusion parts are arranged in the longitudinal direction of the above-mentioned absorbent article. A plurality of rows of portions are arranged in the width direction, and the fused portions are arranged at the same pitch in each row. <10> The individual packaging body of the absorbent article according to any one of the above <1> to <8>, wherein a plurality of fusion portions are arranged in the fusion sealing area, and the fusion portions are arranged in the longitudinal direction of the absorbent article. A plurality of rows of portions are arranged in the width direction, and the fused portions are arranged at different intervals in each row. <11> The individual package of absorbent articles according to any one of the above <1> to <10>, wherein the fixing portion non-arrangement portion has a portion extending in the longitudinal direction of the absorbent article. <12> The individual packaging body for absorbent articles according to any one of the above <1> to <11>, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and packaging material overlapping one above the other. , in each pair of the folded end portions, the absorbent article has a shape in which the width becomes narrower toward the end portions in the longitudinal direction. <13> The individual packaging body for absorbent articles according to any one of the above <1> to <12>, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and the packaging material overlapping one another. , the unsealing opening of the above-mentioned packaging material is arranged at the overlapping portion of the folded ends, and the distance between the above-mentioned folding end located on the upper side and the longitudinal end edge of the above-mentioned absorbent article and the unsealing opening end edge of the above-mentioned packaging material The portion of the opening corresponding to the longest position does not have the above-mentioned gas release portion. <14> The individual packaging body for absorbent articles according to any one of the above <1> to <13>, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and packaging material overlapping one above the other. , in the overlapping portions of the folded ends, there is an area in which the absorbent article does not exist, further inside than the imaginary line drawn along both sides of the absorbent article. <15> The individual packaging body for absorbent articles according to any one of the above <1> to <14>, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and packaging material overlapping one another. , in each pair of the folded end portions, the fixing portion is not arranged at the longitudinal end portion of the absorbent article. <16> The individual package of the absorbent article according to any one of the above <1> to <15>, wherein the absorbent article is provided with a front sheet on the skin-contacting side facing the wearer, and clothing In the case of the opposing back sheet on the non-skin contact side and the absorbent body between the two sheets, the above-mentioned volatile component is arranged on the absorbent body. <17> The individual packaging body for absorbent articles according to the above <16>, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and the packaging material overlapped one above the other, and one pair of the above-mentioned folded end portions In each case, the absorbent body has a shape in which the width becomes narrower toward the longitudinal end of the absorbent article. <18> The individual packaging body for absorbent articles as described in <16> or <17> above, wherein the folding structure of the above-mentioned individual packaging body has a pair of folded end portions of the above-mentioned absorbent article and packaging material overlapped one above the other. In each of the folded end portions, the fixing portion is not arranged in a region where the absorber is not arranged. <19> The individual package of absorbent articles according to any one of the above <1> to <18>, wherein an opening marking tape is arranged on the packaging material near the opening. <20> The individual package of absorbent articles according to the above <19>, wherein the gas release portion of the sealing and fixing area is arranged outside both sides of the opening marking tape. <21> The individual package of absorbent articles according to the above <19> or <20>, wherein the fixed end of the unsealing marking tape is disposed in a position that does not overlap the absorbent body. <22> The individual package of absorbent articles according to any one of the above <19> to <21>, wherein the free end of the opening marking tape is disposed in a position overlapping the absorbent body. <23> The individual package of absorbent articles according to any one of the above <1> to <22>, wherein the volatile component is arranged on the absorbent article so as to overlap with the fixing portion non-arrangement portion in plan view. The central area in the width direction. <24> The individual package of absorbent articles according to the above <23>, which has the structure of (A1) above, and the volatile component is arranged in the longitudinal direction of the absorbent article so as to overlap with the fixing portion in plan view. the middle part. <25> The individual package of absorbent articles according to any one of the above <1> to <24>, wherein the volatile component is a cooling agent.

The present invention has been described together with its embodiments and examples. However, as long as the inventor does not specify otherwise, the description does not limit the inventor's invention in any detail, and it is considered that it does not violate the appended application. The patent scope shall be interpreted broadly with reference to the spirit and scope of the invention as indicated in the patent scope.

This application claims priority based on PCT/JP2017/040266, which was filed internationally on November 8, 2017. The contents of this application are incorporated herein by reference as part of the description of this specification.

1‧‧‧Front sheet 2‧‧‧Back sheet 3‧‧‧Absorbent body 3A‧‧‧Center absorbent sheet 3B‧‧‧Body absorbent sheet 5‧‧‧Side sheet 8‧‧‧ Fixing part 9‧‧‧Fixing part non-arrangement part 10‧‧‧Menstrual sanitary napkin 10A‧‧‧Skin contact surface 10B‧‧‧The side of the sanitary napkin facing clothing 20‧‧‧Packing material 21‧‧ ‧Central packaging part 22‧‧‧First folding packaging part 23‧‧‧Second folding packaging part 23A‧‧‧Extended part of the second folding packaging part 24‧‧‧Fusion layer 25‧‧‧Airtight layer 27‧ ‧‧The area 28 where the packaging materials for menstrual sanitary napkins are not arranged facing each other (the first folding packaging part and the second folding packaging part) ‧‧‧The area 30 where the absorbent body is not arranged ‧‧‧Individual packaging 31‧‧ ‧Folded central portion 32‧‧‧First folded end portion 33‧‧‧Second folded end portion 34‧‧‧Fusion sealing area 34A‧‧‧Innermost end portion 35 in the width direction of the fusion sealing area‧‧‧Opening port 36 ‧‧‧Sealing and fixing area 37‧‧‧Marking tape for opening 51‧‧‧Outer surface 52‧‧‧Outer surface 53‧‧‧Outer surface 85‧‧‧Area 85A‧‧‧arranged with a fixing part The outermost end portion 91‧‧‧ in the width direction of the area of the attachment portion extends in the width direction. The fixing portion non-arrangement portion 92‧‧‧ has a specific width outside the area where the fixing portion is arranged and extends in the length direction. The fixing part non-arrangement part 93‧‧‧ extends in the length direction and the fixing part non-arrangement part 94‧‧‧ is in the area where the absorber is not arranged. The fixing part non-arrangement part 341‧‧‧ is in the fusion sealing area. The gas release part 342‧‧‧The fusion part 351‧‧‧The part of the opening 361‧‧‧The gas release part 371 in the sealing fixed area‧‧‧The fixed end of the marking tape for opening 372‧‧‧The marking for opening The free end of the tape 911‧‧‧Breathable path 921‧‧‧Breathable path 931‧‧‧Breathable path C‧‧‧Middle part F‧‧‧Front part H1‧‧‧Gas release parts are fixed with H2‧‧‧ Spacing between parts H3‧‧‧Length in the width direction of the gas release part H4‧‧‧Lengths in the width direction of the fixed part and non-arrangement part K1, K2‧‧‧Imagine line L1‧‧‧Folding line L2‧‧‧ Folding line R‧‧‧Rear part S1, S2‧‧‧Arrow W1‧‧‧Width of the fusion sealing area in the width direction W2‧‧‧Width of the sealing fixed area in the length direction X‧‧‧Direction Y‧‧‧Direction Z1 ‧‧‧Upper side Z2‧‧‧Lower side

FIG. 1 is a perspective view schematically showing a preferred embodiment of an individual package of absorbent articles according to the present invention from the opening side. FIG. 2 is a cross-sectional view schematically showing the II-II line cross section of the individual package shown in FIG. 1 . FIG. 3 is an enlarged cross-sectional view schematically showing a portion of the layer structure of packaging materials constituting an individual package. FIG. 4 is a perspective view schematically showing the unfolded state (state before folding) of the menstrual sanitary napkins constituting the individual packaging body shown in FIG. 1 before individual packaging (state before folding), and schematically showing the packaging material. Figure 5 is a top view showing a first embodiment of a structure for discharging volatile gases of volatile components in an individual package of this embodiment. (A) shows the individual package being unpacked and facing the clothes. The top view shown from the front side, (B) is the top view shown from the folded center side of the individual package, (C) is the top view from the overlapping first folded end and second folded end of the individual package. (The side with the unsealed opening) shows a top view. Figure 6(A) is a partially enlarged plan view showing the arrangement pattern of the gas release portion in the fusion sealing area of the packaging material in Figures 5(B) and (C) and the non-arrangement portion of the fixing portion of the sanitary napkin. , (B) is a partially enlarged plan view showing another preferred arrangement pattern of the gas release portion in the fusion sealing area and the non-arrangement portion of the fixing portion of the sanitary napkin. Figure 7 is a plan view showing a second embodiment of the structure for discharging the volatilized gas of volatile components in the individual packaging body of this embodiment. (A) shows the individual packaging body being unpacked and facing the clothes. The top view shown from the front side, (B) is the top view shown from the folded center side of the individual package, (C) is the top view from the overlapping first folded end and second folded end of the individual package. (The side with the unsealed opening) shows a top view. FIG. 8 is a partially enlarged plan view showing another preferred arrangement pattern of the gas release portion in the sealing and fixing area. 9 is a plan view showing a third embodiment of a structure for discharging volatile gases of volatile components in an individual package of this embodiment. (A) shows the individual package being unpacked and facing the clothes. The top view shown from the front side, (B) is the top view shown from the folded center side of the individual package, (C) is the top view from the overlapping first folded end and second folded end of the individual package. (The side with the unsealed opening) shows a top view. 10 is a plan view showing a preferred aspect of the shape of the menstrual napkin of the individual package of the present embodiment from the side where the first folded end portion and the second folded end portion overlap (the side where the opening is opened). FIG. 11 is a cross-sectional view schematically showing another preferred aspect of the absorbent body included in the individual package of the menstrual sanitary napkin according to this embodiment.

10‧‧‧Menstrual sanitary napkins

10A‧‧‧Skin contact surface

10B‧‧‧The side of the sanitary napkin facing the clothing

20‧‧‧Packaging materials

21‧‧‧Central Packaging Department

22‧‧‧No.1 Folding and Packaging Department

23‧‧‧The 2nd Folding and Packaging Department

23A‧‧‧Extended part of the second folding packaging part

30‧‧‧Individual packaging

31‧‧‧Fold the center part

32‧‧‧1st folded end

33‧‧‧Second folded end

35‧‧‧Open the seal

36‧‧‧Sealing fixed area

37‧‧‧Marking tape for opening

51‧‧‧Outer surface

52‧‧‧Outer surface

53‧‧‧Outer surface

C‧‧‧Middle part

L1‧‧‧folding line

L2‧‧‧folding line

Y‧‧‧ direction

Z1‧‧‧Upper side

Z2‧‧‧lower side

Claims (23)

An individual package of absorbent articles, comprising: an absorbent article having a length direction corresponding to a direction connecting the wearer's abdominal part, crotch part, and back part, and a width direction orthogonal to the length direction , and contains volatile components; and a packaging material that covers the surface of the absorbent article facing the clothing; and the above-mentioned individual packaging body has the following folding structure, that is, the above-mentioned absorbent article and the above-mentioned packaging material are combined in The above-mentioned packaging material is folded along two or more folding lines in the longitudinal direction, and the skin-contacting surface of the above-mentioned absorbent article is inserted; and the above-mentioned packaging material has a structure in which a fusion layer and an airtight layer are laminated, and the folded packaging material The material includes: a pair of fusion sealing areas, which are formed by joining the fusion layers facing each other on both sides of the longitudinal direction of the absorbent article; and a sealing and fixing area, which is arranged in the folding structure of the above-mentioned individual packaging body. and the above-mentioned absorbent article has a plurality of fixing parts and fixing part non-arrangement parts covered by the above-mentioned packaging material on the side facing the clothing, and the above-mentioned fixing parts are arranged spaced apart from each other; and The above-mentioned packaging material has a release-treated layer on the surface of the above-mentioned fusion layer, and the above-mentioned fixing portion of the above-mentioned absorbent article and the above-mentioned release treatment layer are arranged oppositely; and the individual packaging body of the above-mentioned absorbent article has the following (A1) and ( At least any one of the structures in A2); and the volatile component is a cooling agent; (A1) is the following structure: the fixing portion non-arrangement portion of the absorbent article has a portion extending in the width direction, and in the above-mentioned The above-mentioned fusion sealing area of the packaging material is provided with a gas release part, and the part of the above-mentioned fixed part non-arrangement part extending in the above-mentioned width direction and the above-mentioned fusion The gas release portion of the sealing area is connected in the width direction; (A2) has the following structure: the fixing portion non-arrangement portion of the absorbent article has a portion extending in the length direction, and the sealing portion of the packaging material A gas release portion is arranged in the fixing area, and a portion of the fixing portion non-arrangement portion extending in the longitudinal direction communicates with the gas release portion of the sealed fixing area in the longitudinal direction. The individual packaging body of absorbent articles according to claim 1 has the structures of (A1) and (A2) above. For example, the individual packaging body of absorbent articles according to claim 1, wherein the bulk and softness of the packaging material is 13 cN or more. The individual package of absorbent articles according to claim 1, wherein the coated portion containing at least the volatile component does not overlap the fixing portion in the thickness direction of the absorbent article. The individual packaging body of absorbent articles according to claim 1, wherein the fixing portions are intermittently arranged in the longitudinal direction, and the fixing portion non-disposed portions are arranged between adjacent fixing portions. The individual packaging body of absorbent articles according to claim 1, wherein the distance between the gas release parts arranged in the fusion sealing area is smaller than the distance between the fixing parts. The individual packaging body of absorbent articles according to claim 1, wherein the fixing part is arranged between the outermost end in the width direction of the area where the fixing part is arranged and the innermost end in the width direction of the fusion sealing area. Department is not a configuration department. The individual packaging body of absorbent articles according to claim 1, wherein a plurality of fusion portions are arranged in the fusion sealing area, and a plurality of fusion portions are arranged in the row of the fusion portions in the longitudinal direction of the absorbent article in the width direction. , the above-mentioned fused parts are arranged with the same spacing in each row. The individual package of absorbent articles according to claim 1, wherein a plurality of fusion portions are arranged in the fusion sealing area, and a plurality of fusion portions are arranged in the row of the fusion portions in the longitudinal direction of the absorbent article in the width direction. , the above-mentioned fused parts are arranged at different intervals in each row. The individual package of absorbent articles according to claim 1, wherein the fixing portion non-arrangement portion has a portion extending in the longitudinal direction of the absorbent article. An individual package of absorbent articles according to Claim 1, wherein the folded structure of the individual package has a pair of folded end portions of the absorbent article and the packaging material that overlap each other, and in each of the pair of folded end portions, the above-mentioned The absorbent article has a shape in which the width becomes narrower toward its longitudinal ends. The individual packaging body of absorbent articles as claimed in claim 1, wherein the folding of the above-mentioned individual packaging body The structure has a pair of folded end portions of the above-mentioned absorbent article and the packaging material stacked up and down, and an opening of the above-mentioned packaging material is arranged at the overlapping portion of the folded end portions. There is no gas release portion in the portion of the opening corresponding to the longest distance between the longitudinal edge of the sexual article and the opening edge of the packaging material. An individual package of absorbent articles according to claim 1, wherein the folded structure of the individual package has a pair of folded end portions of the absorbent article and the packaging material overlapping one another, and in the overlapping portions of the folded end portions, There is an area in which the absorbent article does not exist further inside than the imaginary line drawn along both sides of the absorbent article. An individual package of absorbent articles according to claim 1, wherein the folded structure of the individual package has a pair of folded end portions of the absorbent article and the packaging material that overlap each other, and each of the pair of folded end portions is The said fixing part is not arrange|positioned at the longitudinal end part of the said absorbent article. An individual package of absorbent articles according to claim 1, wherein the absorbent article is provided with a front sheet on the skin-contacting side facing the wearer and a back sheet on the non-skin-contacting side facing the clothing. material and an absorbent body between the two sheets, the above-mentioned volatile component is arranged in the absorbent body. An individual package of absorbent articles as claimed in claim 15, wherein the folded structure of the individual package has a pair of folded ends of the absorbent article and the packaging material overlapping one another, In each pair of the folded end portions, the absorbent body has a shape in which the width becomes narrower toward the end portions in the longitudinal direction of the absorbent article. An individual package of absorbent articles according to Claim 15, wherein the folded structure of the individual package has a pair of folded end portions of the absorbent article and the packaging material that overlap each other, and each of the pair of folded end portions is In the area where the absorbent body is not arranged, the fixing part is not arranged. An individual package of absorbent articles according to Claim 1, wherein an opening marking tape is provided on the packaging material near the opening. An individual package of absorbent articles according to claim 18, wherein the gas release portion of the sealing and fixing area is arranged outside both sides of the unsealing marking tape. An individual package of absorbent articles according to claim 18, wherein the fixed end of the unsealing marking tape is disposed at a position not overlapping the absorbent body. An individual package of absorbent articles according to claim 18, wherein the free end of the unsealing marking tape is disposed in a position overlapping the absorbent body. The individual packaging body of absorbent articles according to claim 1, wherein the volatile component is arranged in a central region in the width direction of the absorbent article so as to overlap the fixing portion non-arrangement portion in plan view. An individual package of absorbent articles according to Claim 22, which has the structure of (A1) above, in which the volatile component is disposed in the middle portion of the longitudinal direction of the absorbent article so as to overlap with the fixing portion in plan view.