Package of absorbent article, continuous body of package, and package manufacturing device

Abstract

The present invention provides a package of an absorbent article in which the absorbent article is packaged by means of a packaging film, wherein air permeability of an air passage is easily ensured. A package (100) of an absorbent article has an absorbent article (1) and a packaging film (90) for packaging the absorbent article. The package (100) has a first surface (101) and a second surface (102) that extend in mutually orthogonal first and second directions. The second surface is provided with a first bonding part (51) in which an outer edge of the packaging film in the first direction is bonded to the packaging film overlapping the outer edge. A bonding region (R11), which is provided with a second bonding part (52) in which the packaging film of the first surface and the packaging film of the second surface are bonded, and a non-bonding region (R12), in which the packaging film of the first surface and the packaging film of the second surface are not bonded, are provided at both end parts of the package in the second direction. The packaging film in the non-bonding region forms an air passage (55) leading to the inside and outside of an accommodating space for accommodating the absorbent article, and the bonding region has a protruding part (56) protruding outward in the thickness direction with respect to the packaging film.

Description

Package of Absorbent Article, Continuum of Packages, and Manufacturing Apparatus for Packages

[0001] The present invention relates to a package of an absorbent article in which the absorbent article is packaged with a packaging film.

[0002] In Patent Document 1, a package of an absorbent article in which the absorbent article is packaged with a packaging film is disclosed. The package of Patent Document 1 has a first surface extending in a planar direction extending in a first direction and a second direction orthogonal to each other, and a second surface facing the first surface. On the second surface, a first joint portion is provided that joins the outer edge of the packaging film in the first direction to the packaging film overlapping the outer edge. At both ends of the package in the second direction, second joint portions that join the packaging film on the first surface and the packaging film on the second surface are formed. In the region between one second joint portion and the other second joint portion, the packaging films on the first surface and the second surface form a storage space for the absorbent article without being joined to each other.

[0003] Japanese Patent Application Laid-Open No. 2023-096617

[0004] However, the above-described package of the absorbent article has the following problems. The ventilation path of Patent Document 1 is constituted by non-joined portions of the packaging films at both ends of the package in the second direction. Since ventilation is through the gaps between the packaging films, it may not be possible to ensure ventilation when the packaging films are adhered to each other by static electricity or the like.

[0005] The present invention has been made in view of the above problems, and provides a package of an absorbent article in which an absorbent article is packaged with a packaging film, and in which it is easy to ensure the air permeability of the ventilation path.

[0006] A package for an absorbent article according to one embodiment comprises an absorbent article and a packaging film for packaging the absorbent article. The package has a first surface extending in a planar direction including a first direction and a second direction which are orthogonal to each other, and a second surface facing the first surface. The second surface is provided with a first joint portion in which the outer edge of the packaging film in the first direction is joined to the packaging film that overlaps the outer edge. Both ends of the package in the second direction are provided with a joint region in which a second joint portion is provided in which the packaging film of the first surface and the packaging film of the second surface are joined, and a non-joint region in which the packaging film of the first surface and the packaging film of the second surface are not joined. The packaging film in the non-joint region forms a ventilation passage that leads to the inside and outside of the storage space for accommodating the absorbent article and has a projection that protrudes outward in the thickness direction relative to the packaging film in the joint region.

[0007] A continuous body of packaging according to one embodiment is a continuous body of absorbent articles, in which a plurality of absorbent article packaging bodies are arranged in a second direction. The protrusion of one adjacent absorbent article packaging body in the second direction is positioned on the extension line of the protrusion of the other adjacent absorbent article packaging body in the second direction.

[0008] A packaging manufacturing apparatus according to one embodiment manufactures a packaging comprising an absorbent article and a packaging film for packaging the absorbent article. The packaging contains the absorbent article in a containment space sandwiched between a first surface extending in a planar direction including a first direction and a second direction which are mutually orthogonal, and a second surface facing the first surface. The manufacturing apparatus includes a folding mechanism for folding the packaging film with a fold along the first direction as the starting point, a first joining mechanism for joining the outer edge of the packaging film in the first direction to the packaging film overlapping the outer edge to form a first joint, and a second joining mechanism arranged downstream of the first joining mechanism in the conveying direction for joining the packaging film of the first surface to the packaging film of the second surface at both ends in the second direction of the packaging film to form a second joint. The second joining mechanism includes a joining region where the second joining portion is provided, and a non-jointed region where the packaging film on the first surface and the packaging film on the second surface are not joined, forming a ventilation passage that communicates with the inside and outside of the storage space for accommodating the absorbent article, and the packaging film in the non-jointed region forms a protruding portion that protrudes outward in the thickness direction relative to the packaging film in the joining region.

[0009] Figure 1 is a plan view of the packaging for absorbent articles. Figure 2 is a cross-sectional view of the packaging for absorbent articles. Figure 2(A) is a cross-sectional view along the line A-A shown in Figure 1, and Figure 2(B) is a cross-sectional view along the line B-B shown in Figure 1. Figure 3 is a cross-sectional view along the line C-C shown in Figure 1. Figure 4 is an enlarged view of section D shown in Figure 1. Figure 5 is an enlarged view of section E shown in Figure 3. Figure 6 is a perspective view of the continuous body of the packaging. Figure 7 is a diagram illustrating the manufacturing process by the packaging manufacturing apparatus. Figure 8 is a schematic diagram showing the embossed portion of the second joining mechanism as seen from the direction of arrow F. Figure 9 is a schematic cross-sectional view showing the state in which the joined region and non-joined region are formed by the second joining mechanism.

[0010] (1) Outline of Embodiments The following matters will become clear from the description in this specification and the accompanying drawings. The packaging for absorbent articles according to Embodiment 1 comprises an absorbent article and a packaging film for packaging the absorbent article. The packaging has a first surface extending in a planar direction including a first direction and a second direction which are orthogonal to each other, and a second surface facing the first surface. The second surface is provided with a first joint portion in which the outer edge of the packaging film in the first direction is joined to the packaging film that overlaps the outer edge. Both ends of the packaging in the second direction are provided with a joint region in which a second joint portion is provided in which the packaging film of the first surface and the packaging film of the second surface are joined, and a non-joint region in which the packaging film of the first surface and the packaging film of the second surface are not joined. The packaging film in the non-joint region forms a ventilation passage that leads to the inside and outside of the storage space for accommodating the absorbent article and has a projection that protrudes outward in the thickness direction relative to the packaging film in the joint region. According to this embodiment, air can be moved in and out of the containment space through the ventilation channel, and air can be removed from the containment space. The packaging film in the non-jointed area has protrusions that project outward in the thickness direction relative to the packaging film in the joined area. The protrusions of the packaging film are easily spaced apart relative to the laminated packaging film. Therefore, it is possible to suppress the packaging film from unintentionally sticking together due to static electricity, etc., and to ensure the airflow of the ventilation channel.

[0011] In a preferred embodiment, the invention according to Embodiment 2 may have the following features in the invention according to Embodiment 1: An edge non-jointed region is provided outside the jointed region and the non-jointed region in the second direction, where the outer edges of the packaging film in the second direction are not joined. The edge non-jointed region is connected to the non-jointed region. According to this embodiment, since the edge non-jointed region and the non-jointed region are connected, the edge non-jointed region can also constitute a ventilation passage. A ventilation passage is formed in which the edge non-jointed region and the non-jointed region are integrated, and the ventilation can be further improved by this ventilation passage.

[0012] In a preferred embodiment, the invention according to embodiment 3 may have the following features in the invention according to embodiment 2: The edge non-joining region is formed over the entire area in the first direction of the outer edge of the packaging body in the second direction. According to this embodiment, since the edge non-joining region is formed over the entire area of ​​the outer edge of the packaging body in the second direction, it is possible to suppress the packaging films from adhering to each other at the outer edge of the packaging body in the second direction. It is possible to suppress the packaging films from adhering unintentionally near the ventilation passage and ensure the airflow of the ventilation passage.

[0013] In a preferred embodiment, the invention according to Embodiment 4 may have the following features in the invention according to any of Embodiments 1 to 3: The length of the protrusion in the second direction is longer than the length of the joining region in the second direction. According to this embodiment, the longer length of the protrusion in the second direction than the length of the joining region in the second direction makes it easier to secure the volume of the ventilation passage, which is an air escape route. In addition, the rigidity in the second direction in which the protrusion extends is increased, creasing is suppressed, and the shape of the ventilation passage is easier to maintain.

[0014] In a preferred embodiment, the invention according to Embodiment 5 may have the following features in the invention according to any of Embodiments 1 to 4: In the second direction, the outer edge of the protrusion extends outward from the outer edge of the joining region. According to this embodiment, since the protrusion extends outward from the joining region in the second direction, adhesion between films due to static electricity, etc., can be suppressed even outside the joining region, so that air can be efficiently discharged.

[0015] In a preferred embodiment, the invention according to embodiment 6 may have the following features in the invention according to any of embodiments 1 to 5: In the second direction, the outer edge of the protrusion reaches the outer edge of the packaging film. According to this embodiment, the outer edge of the packaging film in the second direction is lifted by the protrusion, and adhesion between the packaging films due to static electricity, etc., at the outer edges of the packaging films in the second direction can be suppressed, so that air can be efficiently discharged.

[0016] In a preferred embodiment, the invention according to embodiment 7 may have the following features in the invention according to any of embodiments 1 to 6: The second joints may be arranged in a plurality at intervals in the first direction within the joint area. The length of the protrusions in the first direction is longer than the interval of the second joints in the first direction. According to this embodiment, since the interval of the second joints in the first direction is relatively short, the joint by the second joints can be maintained, and since the length of the protrusions in the first direction is relatively long, it is easy to ensure the airflow of the ventilation passage.

[0017] In a preferred embodiment, the invention according to embodiment 8 may have the following features in the invention according to any of embodiments 1 to 7. The protrusions are arranged in multiples at intervals in the first direction at each of the two ends of the packaging body in the second direction. The ventilation passages are provided at both ends of the packaging body in the second direction and are arranged on both sides of the storage space in the second direction. Therefore, ventilation can be improved over the entire area of ​​the storage space in the second direction. In addition, since two ventilation passages for air outflow are provided at each end of the packaging body in the second direction, it is easy to promote the outflow of air to the outside of the storage space and ensure ventilation.

[0018] In a preferred embodiment, the invention according to embodiment 9 may have the following features in the invention according to any of embodiments 1 to 8. The joining region comprises an outer joining region located on both sides of the first direction, and a central joining region located between the outer joining regions, among the regions obtained by dividing the joining region into three equal parts in the first direction. The area ratio of the second joining portion in the outer joining region is higher than the area ratio of the second joining portion in the central joining region. The outer joining region is the region adjacent to the non-joined region. According to this embodiment, because the area ratio of the second joining portion in the outer joining region is high, it is possible to suppress the unintentional peeling of the second joining portion in the joining region when ventilation is performed through the ventilation passage. In addition, by suppressing the area ratio of the second joining portion in the central joining region, the area ratio of the second joining portion in the entire joining region is suppressed, making it easier to open the package when opening it.

[0019] In a preferred embodiment, the invention according to embodiment 10 may have the following features in the invention according to any of embodiments 1 to 9. The packaging body has a first laminated region in which three or more layers of the packaging film are laminated, and a second laminated region in which two layers of the packaging film are laminated. The protrusion is provided in the first laminated region. In the first laminated region in which three or more layers of the packaging film are laminated, the number of layers of packaging film is large, and the packaging films adhere to each other easily. By providing the protrusion in the first laminated region, breathability can be ensured in the region in which the packaging films adhere to each other easily. In addition, by providing the protrusion in the first laminated region, the number of ventilation passages provided in the second laminated region can be relatively reduced, and damage to the second joint when air escapes can be suppressed.

[0020] In a preferred embodiment, the invention according to embodiment 11 may have the following features in the invention according to embodiment 10. The non-jointed region comprises a first non-jointed region provided in the first laminated region and a second non-jointed region provided in the second laminated region. The apex of the protrusion of the first non-jointed region is located further outward in the thickness direction than the apex of the second non-jointed region. The first laminated region has more layers of the second joint between the packaging films compared to the second laminated region, and the joint strength tends to be higher. Therefore, the joint strength around the first non-jointed region is higher than the joint strength around the second non-jointed region. By increasing the height of the protrusion in the first non-jointed region, where the surrounding joint strength is high, it is possible to more efficiently inhale and exhale air while suppressing damage to the second joint.

[0021] In a preferred embodiment, the invention according to embodiment 12 may have the following features in the invention according to any of embodiments 1 to 11: A fold is formed on the outer edge of the packaging body in the first direction for folding the packaging film. The non-jointed area is provided adjacent to the fold. The non-jointed area adjacent to the fold is located at the outer end in the first direction of the outer end of the packaging body in the second direction. Therefore, the ventilation passage is located at the outer end of the packaging body in the first direction and at the outer end of the packaging body in the second direction. Thus, air permeability can be improved throughout the entire first and second directions of the packaging body.

[0022] The continuous packaging according to embodiment 13 is a continuous body of absorbent articles, in which multiple packaging bodies for absorbent articles are arranged in the second direction. The protrusion of one adjacent packaging body for absorbent articles in the second direction is positioned on the extension line of the other adjacent packaging body for absorbent articles in the second direction. According to this embodiment, since the protrusions of each packaging body are provided on the extension line, each protrusion can work in conjunction to improve the airflow of the ventilation passage.

[0023] A packaging manufacturing apparatus according to embodiment 14 manufactures a packaging comprising an absorbent article and a packaging film for packaging the absorbent article. The packaging contains the absorbent article in a containment space sandwiched between a first surface extending in a planar direction including a first and second direction which are mutually orthogonal to each other, and a second surface facing the first surface. The manufacturing apparatus includes a folding mechanism for folding the packaging film with a fold along the first direction as the starting point, a first joining mechanism for joining the outer edge of the packaging film in the first direction to the packaging film overlapping the outer edge to form a first joint, and a second joining mechanism arranged downstream of the first joining mechanism in the transport direction for joining the packaging film of the first surface to the packaging film of the second surface at both ends in the second direction of the packaging film to form a second joint. The second joining mechanism includes a joining region where the second joining portion is provided, and a non-jointed region where the packaging film on the first surface and the packaging film on the second surface are not joined, forming a ventilation passage that communicates with the inside and outside of the storage space for containing the absorbent article. The packaging film in the non-jointed region forms a protruding portion that protrudes outward in the thickness direction relative to the packaging film in the joining region. According to this embodiment, a package can be manufactured that ensures the ventilation of the ventilation passage.

[0024] In a preferred embodiment, the invention according to embodiment 15 may have the following features in the invention according to embodiment 14. The second joining mechanism is arranged on both sides in the thickness direction with respect to the packaging film and has an anvil portion and an embossed portion that weld the packaging film to form the second joining portion. At least one of the anvil portion and the embossed portion has a convex portion that corresponds to the joining region and protrudes to the other side of the anvil portion and the embossed portion, and a concave portion that corresponds to the non-joining region and is recessed more than the convex portion. According to this embodiment, the joining region can be formed by the convex portion and the non-joining region can be formed by the concave portion. In addition, because the concave portion is recessed more than the convex portion, the packaging film corresponding to the non-joining region is less likely to be pressed and is more likely to float outward in the thickness direction. Therefore, a protrusion can be formed in the packaging film of the non-joining region.

[0025] In a preferred embodiment, the invention according to embodiment 16 may have the following features in the invention according to embodiment 15. The protrusion has a first protrusion and a second protrusion that is recessed more than the first protrusion. The most recessed bottom of the recess is more recessed than the most recessed bottom of the second protrusion. The first protrusion forms a second joint, and the second protrusion between the first protrusions forms a gap between the second joints. Therefore, the second joints can be arranged with gaps in between in a plan view, and a joint region R11 can be formed by the aggregation of multiple second joints.

[0026] In a preferred embodiment, the invention according to embodiment 17 may have the following features in the invention according to embodiment 15 or embodiment 16: The area of ​​the protrusion may be larger than the area of ​​the recess. According to this embodiment, the joint state can be maintained by increasing the area of ​​the second joint while forming a ventilation passage with the non-jointed region.

[0027] In a preferred embodiment, the invention according to embodiment 18 may have the following features in the inventions according to embodiments 15 to 17: It includes a pressing mechanism positioned downstream of the second joining mechanism in the conveying direction, which presses the packaging body in the thickness direction by applying a pressing member to the packaging body. The pressing mechanism brings the pressing member into contact with an area that does not overlap with at least a part of the non-joined area. According to this embodiment, the pressing mechanism can remove air from the containment space and reduce the volume of the packaging body during manufacturing. Furthermore, by bringing the pressing member into contact with an area that does not overlap with at least a part of the non-joined area, the pressing mechanism can remove air from the containment space without blocking at least a part of the ventilation passage with the pressing member.

[0028] (2) Packaging for absorbent article according to the embodiment Hereinafter, the packaging 100 for the absorbent article according to the embodiment (hereinafter referred to as packaging 100) will be described with reference to the drawings. In the following drawings, identical or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratios of each dimension etc. may differ from those of reality. Therefore, specific dimensions etc. should be determined by referring to the following explanation. In addition, there may be parts where the relationships and ratios of dimensions differ between drawings. The absorbent article may be an absorbent article such as a sanitary napkin, panty liner, incontinence pad, fecal pad, or shorts-type sanitary napkin that is attached to an article worn. The absorbent article may be an article that is attached to the inside of an article worn, such as underwear. The absorbent article 1 of the embodiment is a sanitary napkin.

[0029] Figure 1 is a plan view of the packaging 100. Figure 2(A) is a cross-sectional view along the line A-A shown in Figure 1, and Figure 2(B) is a cross-sectional view along the line B-B shown in Figure 1. Figure 3 is a cross-sectional view along the line C-C shown in Figure 1. Figure 4 is an enlarged view of portion D shown in Figure 1. Figure 5 is an enlarged view of portion E shown in Figure 3. The packaging 100 may include an absorbent article 1 and a packaging film 90.

[0030] The packaging 100 may be distributed in a state where multiple units are contained within the package, or it may be distributed as a single packaging 100. An example of distribution as a single packaging 100 is a packaging 100 containing one absorbent article. The packaging 100 may be sold at retail in small quantities, or it may be a continuous body as described later. The packaging 100 in this embodiment is a packaging 100 that is distributed in a state where multiple units are contained within the package, and is removed from the package when in use, carried, and used.

[0031] The absorbent article 1 has a front-to-back direction, a width direction, and a thickness direction that are perpendicular to each other. In the front-to-back direction of the absorbent article 1, the side that comes into contact with the wearer's lower abdomen is called the "front side," and the side that comes into contact with the wearer's buttocks is called the "back side." In the thickness direction T of the absorbent article 1, the side that comes into contact with the wearer's skin is called the "skin side," and the opposite side is called the "non-skin side." The absorbent article 1 has at least an absorbent core, a surface sheet, and a back sheet (not shown). The surface sheet is made of any sheet-like material having a structure that allows liquid to pass through. The back sheet is a sheet that is impermeable to liquid. The absorbent core has an absorbent material that absorbs liquid.

[0032] The packaging film 90 is a resin film, preferably a thermoplastic resin film. The packaging film 90 packages the absorbent article 1. The packaging film 90 may package one absorbent article 1. The packaging film 90 may be folded together with the absorbent article 1 to package the absorbent article 1, or the absorbent article 1 may be folded separately from the absorbent article 1 before being packaged. The absorbent article 1 may be fixed to the inner surface of the packaging film 90 via a fixing part. The fixing part may consist of an adhesive for attaching the absorbent article to the wearable article, and the back sheet of the absorbent article 1 may be fixed to the inner surface of the packaging film 90 via a fixing part. Alternatively, a release sheet that peelably covers the adhesive for attaching the absorbent article 1 to the wearable article may be fixed to the inner surface of the packaging film 90 via a fixing part. In this embodiment, the packaging 100 has a release sheet 2 (see Figures 1 and 2) placed between the absorbent article 1 and the packaging film 90. The release sheet 2 and the absorbent article 1 are joined via an adhesive (not shown) for fastening to the wearable article, and the release sheet 2 and the packaging film 90 are joined via a fixing part (not shown).

[0033] The packaging 100 has a first surface 101 extending in a planar direction including a first direction D1 and a second direction D2 which are orthogonal to each other, and a second surface 102 facing the first surface 101. Between the first surface 101 and the second surface 102, the packaging 100 has a side surface extending in the thickness direction T of the absorbent article 1. In this embodiment, the first direction D1 is along the front-to-back direction of the absorbent article 1, and the second direction D2 is along the width direction of the absorbent article 1. However, in a modified example, the first direction D1 may be along the width direction of the absorbent article 1, and the second direction D2 may be along the front-to-back direction of the absorbent article 1.

[0034] As shown in Figure 1, the packaging body 100 individually packages absorbent articles 1 with packaging film 90 in a folded state, folded using a plurality of folds FL as starting points. More specifically, the packaging film 90 is folded towards the second surface 102 using both ends of the first direction D1 of the first surface 101 as starting points. The folded packaging film 90 may overlap on the second surface 102. Therefore, the packaging body 100 has a first layered region 91 in which three or more layers of packaging film 90 are laminated, and a second layered region 92 in which two layers of packaging film 90 are laminated. In this embodiment, the packaging film 90 is folded using the first fold FL1 and the second fold FL2 as starting points, and three layers of packaging film 90 are arranged in the first layered region 91. However, in a modified example, the packaging film 90 may be folded using three folds as a base point, and the first laminated region 91 may be provided with a region where three layers of packaging film 90 are arranged and a region where four layers of packaging film 90 are arranged.

[0035] The packaging body 100 has a first joint 51 and a second joint 52 formed where the packaging films are joined together in a folded state. On the second surface, the first joint 51 is joined to the packaging film 90 whose outer edge in the first direction D1 overlaps with the outer edge of the packaging film 90. The outer edge in the first direction D1 of the packaging film 90 joined by the first joint 51 is the outer edge located on the outer surface of the packaging body 100 on the second surface. The first joint 51 may be joined to the packaging films 90 together with an adhesive. The first joint 51 extends in the second direction D2 along the outer edge in the first direction D1 of the packaging film 90. The first joint 51 may be provided spanning the second joint 52 located at both ends of the packaging body 100 in the second direction D2, and may be provided over the entire area of ​​the packaging body 100 in the second direction D2.

[0036] The second joint 52 joins the packaging film 90 of the first surface 101 and the packaging film 90 of the second surface at both ends of the packaging body 100 in the second direction D2. In a configuration in which, in addition to the packaging film 90 of the first surface 101 and the packaging film 90 of the second surface, there is also a packaging film 90 between the packaging film 90 of the first surface 101 and the packaging film 90 of the second surface at both ends of the packaging body 100 in the second direction D2, the second joint 52 may join the packaging film 90 of the first surface 101, the packaging film 90 of the second surface, and the packaging film 90 between the packaging film 90 of the first surface 101 and the packaging film 90 of the second surface. The second joint 52 may also join the packaging films 90 together by welding, such as heat welding. In this invention, the outer end of the second direction D2 includes the outer edge of the second direction D2 and is a portion that occupies a certain range in the second direction D2, and both ends of the second direction D2 are the outer ends located on both sides of the second direction D2.

[0037] At both ends of the packaging body 100 in the second direction D2, there is a jointed region R11 where a second joint 52 is provided, and a non-jointed region R12 where the packaging film 90 of the first surface 101 and the packaging film 90 of the second surface are not joined. The jointed region R11 and the non-jointed region R12 are adjacent regions in the first direction D1. The non-jointed region R12 is the region in the second direction D2 where the jointed region R11 is provided, excluding the jointed region R11. Therefore, the length of the non-jointed region R12 in the second direction D2 is the same as the length of the jointed region R11 in the second direction D2.

[0038] As shown in Figure 4, the second joints 52 are spaced apart in the first direction D1 and the second direction D2. In a modified example, the second joints 52 may be spaced apart in the first direction D1 and continuous in the second direction D2, or they may be continuous in the first direction D1 and spaced apart in the second direction D2. The joint region R11 includes not only the region where the second joints 52 are provided, but also the region between the second joints 52. The region between the second joints 52 included in the joint region R11 is located between the spaced-apart second joints 52 and is substantially joined by adjacent second joints 52. Whether or not a region is substantially joined can be determined by a ventilation test.

[0039] The air permeability test can be performed by the following method. Distilled water is poured to a height of 30 cm into a water tank that is approximately 50 cm in length, width, and height. Next, an acrylic plate larger than the planar dimensions of the packaging is submerged, and then the packaging is gently submerged on the acrylic plate so that the second joint of the packaging faces sideways. Next, an acrylic plate of the same size as the first acrylic plate is submerged, so that the packaging is sandwiched between the first and second acrylic plates. A force of approximately 2 kg is applied from above the second acrylic plate, and the amount of air released is observed. The areas from which air is released constitute the non-jointed region R12, and the areas from which no air is released or only fine bubbles (for example, bubbles with a diameter less than half the size of the bubbles in the non-jointed region, or bubbles with a diameter smaller than the distance between the second joints 52 in the second direction) are substantially joined and constitute the joined region R11.

[0040] Between the joined regions R11 in the second direction D2 of the packaging 100, a storage space S for accommodating the absorbent article 1 is formed. In the storage space S, the overlapping packaging films 90 in the thickness direction are not joined together, and it contains the absorbent article 1 and air. The unjointed regions R12 form a ventilation passage 55 that leads to the inside and outside of the storage space S. Air in the storage space S can be discharged to the outside of the storage space through the unjointed regions R12. The ventilation passage 55 formed by the unjointed regions R12 may extend in the second direction D2. The unjointed regions R12 may extend parallel to the second direction D2, or they may extend inclined with respect to the second direction D2. Multiple unjointed regions R12 may be provided, or only one may be provided. The length of the unjointed region R12 in the first direction D1 may be shorter than the length of the unjointed region R12 in the second direction D2. The relatively short length of the non-joined region R12 in the first direction D1 reduces the length of the opening at the outer edge of the packaging 100, thereby suppressing the intrusion of foreign matter into the containment space. Specifically, the length of the non-joined region R12 in the first direction D1 may be 3 mm or less, and preferably 2 mm or less.

[0041] As shown in Figure 5, the packaging film 90 in the non-joined region R12 has a projection 56 that protrudes outward in the thickness direction relative to the packaging film 90 in the joined region R11. The projection 56 is a portion that protrudes outward in the thickness direction relative to the outer surface of the joined region R11 on at least one of the first surface 101 and the second surface of the packaging body 100. The distance L56 between the apex of the projection 56 and the outer surface of the joined region R11 may be greater than or equal to the thickness of the packaging film 90, and may be 1 mm or more.

[0042] According to this embodiment, air can be moved in and out of the containment space via the ventilation passage 55, and air can be removed from the containment space. The packaging film 90 in the non-joining region R12 has a protruding portion 56 that protrudes outward in the thickness direction relative to the packaging film 90 in the joining region R11. The protruding portion 56 of the packaging film 90 is easily spaced apart from the laminated packaging film 90. Therefore, it is possible to suppress the packaging film 90 from unintentionally sticking together due to static electricity, etc., and ensure the airflow of the ventilation passage 55. For example, when a user carries the package 100 or places it in a container such as a box during distribution, the volume of the package 100 can be reduced, improving the convenience of carrying and transporting. Also, generally, during distribution, the package 100 is laminated on the first surface 101 or the second surface. At this time, the outer end of the package 100 in the second direction D2 has a joining region R11, and because its thickness is thin, it is often not in close contact with the adjacent package 100. In this packaging configuration, the ventilation passage 55 is less likely to be blocked, allowing air to be released through the ventilation passage 55. Furthermore, when multiple packages 100 are placed in a package, they are generally stacked and pressed in the thickness direction to be placed inside the package. In this case, if the ventilation passage 55 is not formed, there is a risk that the second joint 52 may unintentionally break when pressed in the thickness direction. However, because the ventilation passage 55 is provided, air can be released from the storage space through the ventilation passage 55, preventing the second joint 52 from unintentionally breaking. In addition, even if the absorbent article 1 placed inside the package is compressed in the thickness direction, removing it from the package allows air to flow in through the ventilation passage 55, restoring the volume of the absorbent article 1. Furthermore, the influx of air through the ventilation passage 55 increases the volume of air in the storage space S, surrounding the absorbent article 1 with air and suppressing deformation of the absorbent article due to pressure or impact from outside the packaging 100.

[0043] Hereinafter, in this embodiment, a preferred configuration will be described. An edge non-bonding region R13 where the outer edges of the packaging film 90 in the second direction D2 are non-bonded may be provided outside the bonding region R11 and the non-bonding region R12 in the second direction D2. The edge non-bonding region R13 may be continuous with the non-bonding region R12. Since the edge non-bonding region R13 and the non-bonding region R12 are continuous, the edge non-bonding region R13 can also form the air passage 55. Note that the edge non-bonding region R13 is determined to form the air passage 55 when air comes out in the above-mentioned air permeability test. An air passage in which the edge non-bonding region R13 and the non-bonding region R12 are integrated is formed, and the air permeability can be further improved by this air passage.

[0044] At the outer end portion of the package 100 in the second direction D2, an edge non-bonding region R13 is provided in a certain range extending from the outer edge of the package 100 in the second direction D2 to the inside in the second direction D2. Inside the edge non-bonding region R13 in the second direction D2, the bonding region R11 and the non-bonding region R12 are provided. The region where the bonding region R11, the non-bonding region R12, and the edge non-bonding region R13 are provided may constitute the outer end portion of the package 100 in the second direction D2. Further, the length of the edge non-bonding region R13 in the second direction D2 may be shorter than the length of the bonding region R11 in the second direction D2. The outer end portion of the package 100 in the second direction D2 is likely to have the packaging films 90 adhere to each other due to static electricity or the like. By narrowing the edge non-bonding region R13, it is possible to suppress the packaging films from adhering to each other due to static electricity in the edge non-bonding region R13, and it becomes easier to secure the air passage 55.

[0045] The edge non-joining region R13 may be provided not only on the outside of the second direction D2 relative to the non-joining region R12, but also on the outside of the second direction D2 relative to the joining region R11. Preferably, the edge non-joining region R13 may be formed over the entire area of ​​the first direction D1 at the outer edge of the packaging body 100 in the second direction D2. According to this embodiment, it is possible to suppress the packaging film 90 from adhering to each other at the outer edge of the packaging body 100 in the second direction D2. It is possible to suppress the packaging film 90 from adhering unintentionally near the ventilation passage 55, and ensure the airflow of the ventilation passage 55. In addition, the cross-sectional area of ​​the ventilation passage 55 facing the outer edge of the packaging body 100 in the second direction D2 can be made larger, and the airflow can be further improved.

[0046] The protrusion 56 only needs to be provided on at least a portion of the packaging film 90 in the non-joining region R12. The length L562 of the protrusion 56 in the second direction D2 may be longer than the length L112 of the jointing region R11 in the second direction D2. According to this embodiment, by making the length of the protrusion 56 in the second direction D2 longer than the length of the jointing region R11 in the second direction D2, it is easier to secure the volume of the ventilation passage 55, which is an air escape route. In addition, by increasing the rigidity of the second direction D2 on which the protrusion 56 extends and suppressing creasing, it is easier to maintain the shape of the ventilation passage. In a modified example, the length L562 of the protrusion 56 in the second direction D2 may be shorter than the length L112 of the jointing region R11 in the second direction D2. In the embodiment having multiple protrusions 56, the length L562 of at least one protrusion 56 in the second direction D2 should be longer than the length L112 of the jointing region R11 in the second direction D2.

[0047] In the second direction D2, the outer edge of the protrusion 56 may extend outward beyond the outer edge of the joining region R11. According to this embodiment, since the protrusion 56 extends outward in the second direction D2 beyond the joining region R11, adhesion between the packaging films due to static electricity, etc., can be suppressed even outside the joining region R11, so that air can be efficiently discharged. In the embodiment having multiple protrusions 56, the outer edge of at least one protrusion 56 may extend outward beyond the outer edge of the joining region R11.

[0048] In the second direction D2, the outer edge of the protrusion 56 may reach the outer edge of the packaging film 90. According to this aspect, the outer edge of the packaging film 90 in the second direction D2 is lifted by the protrusion 56, and adhesion due to static electricity or the like between the packaging films 90 at the outer edge of the packaging film 90 in the second direction D2 can be suppressed, so that air can be efficiently discharged. In a form having a plurality of protrusions 56, the outer edge of at least one protrusion 56 may reach the outer edge of the packaging film 90.

[0049] The length L561 of the protrusion 56 in the first direction D1 may be longer than the interval G521 between the second joints 52 in the first direction D1. The interval G521 between the second joints 52 is the interval G521 between the second joints 52 within the joining region R11. According to this aspect, since the interval G521 between the second joints 52 in the first direction D1 is relatively short, the joining by the second joints 52 can be maintained, and since the length L561 of the protrusion 56 in the first direction D1 is relatively long, it is easy to ensure the air permeability of the ventilation path 55. In a form having a plurality of protrusions 56, it is sufficient that the length L561 of at least one protrusion 56 in the first direction D1 is longer than the interval G521 between the second joints 52 in the first direction D1.

[0050] Also, the length L561 of the protrusion 56 in the first direction D1 may be shorter than the length of the non-joining region R12 in the first direction D1, but preferably, the length L561 of the protrusion 56 in the first direction D1 is the same as the length of the non-joining region R12 in the first direction D1, that is, the protrusion 56 may be formed over the entire first direction D1 of the non-joining region R12.

[0051] A plurality of protrusions 56 may be arranged at intervals in the first direction D1 at both ends of the package 100 in the second direction D2. According to this aspect, the ventilation path 55 is provided at both ends of the package 100 in the second direction D2 and is arranged on both sides sandwiching the accommodation space in the second direction D2. Therefore, the air permeability can be improved over the entire second direction D2 of the accommodation space. Also, at each end of the package 100 in the second direction D2, since the ventilation paths 55 through which air flows out are provided at two locations apart from each other, the outflow of air to the outside of the accommodation space is promoted, and it is easy to ensure the air permeability.

[0052] The joint region R11 comprises an outer joint region R111 located on both sides of the first direction D1, and a central joint region R112 located between the outer joint regions R111, which are obtained by dividing the joint region R111 into three equal parts in the first direction D1. The area ratio of the second joint 52 in the outer joint region R111 may be higher than the area ratio of the second joint 52 in the central joint region R112. The area ratio of the second joint 52 in the outer joint region R111 is the area of ​​the second joint 52 in the outer joint region R111 (total area if multiple second joints 52 are provided) / the area of ​​the outer joint region R111. The area ratio of the second joint 52 in the central joint region R112 is the area of ​​the second joint 52 in the central joint region R112 (total area if multiple second joints 52 are provided) / the area of ​​the central joint region R112. The outer bonding region R111 is the region adjacent to the non-bonding region R12. Because the area ratio of the second bonding portion 52 is high in the outer bonding region R111, it is possible to suppress the unintentional peeling of the second bonding portion 52 in the bonding region R11 when ventilation is performed through the ventilation passage 55. In addition, by reducing the area ratio of the second bonding portion 52 in the central bonding region R112, the area ratio of the second bonding portion 52 in the entire bonding region R11 is reduced, making it easier to open the package 100.

[0053] In this embodiment, the second joint portion 52 is arranged in five rows in the first direction D1 within a single joint region R11. The second joint portions 52 in the rows located on both sides of the first direction D1 are arranged in pairs in the second direction D2 within the joint region R11. Additionally, the three rows located in the center of the first direction D1 are arranged in pairs in the second direction D2 within the joint region R11.

[0054] The protrusions 56 may be provided in the first laminated region 91. In a configuration having multiple protrusions 56, at least one protrusion 56 may be provided in the first laminated region 91. In the first laminated region 91, where three or more layers of packaging film are laminated, the number of layers of packaging film 90 is large, and the packaging films 90 tend to adhere to each other. By providing protrusions in the first laminated region 91, breathability can be ensured in the region where the packaging films tend to adhere to each other. In addition, by providing protrusions 56 in the first laminated region 91, the number of ventilation passages 55 provided in the second laminated region 92 can be relatively reduced, and damage to the second joint 52 when air escapes can be suppressed.

[0055] The non-jointed region R12 may include a first non-jointed region R121 provided in the first laminated region 91 and a second non-jointed region R122 provided in the second laminated region 92. The apex of the protrusion 56 of the first non-jointed region R121 may be located further outward in the thickness direction than the apex of the second non-jointed region R122. Compared to the second laminated region 92, the first laminated region 91 has more layers of the second joint 52 between the packaging films 90, and the joint strength tends to be higher. Therefore, the joint strength around the first non-jointed region R121 is higher than the joint strength around the second non-jointed region R122. By increasing the height of the protrusion 56 in the first non-jointed region R121, where the surrounding joint strength is high, it is possible to more efficiently inhale and exhale air while suppressing damage to the second joint 52.

[0056] In this embodiment, the non-jointed region R12 has a plurality of first non-jointed regions R121 and a plurality of second non-jointed regions R122 within the outer end on one side in the second direction D2 of the packaging body 100. However, in a modified example, the non-jointed region R12 may not have the second non-jointed regions R122 and may only have the first non-jointed regions R121. When multiple packaging bodies 100 are placed in the package, a large force may be applied instantaneously when the packaging bodies 100 are pressed in the thickness direction. At this time, since the non-jointed region R12 is not provided in the second laminated region, the strength of the second joint 52 in the second laminated region can be ensured and unintentional damage to the second joint 52 can be suppressed.

[0057] The non-joined region R12 may be provided adjacent to the fold line FL within the outer end of the packaging body 100 in the second direction D2. The non-joined region R12 adjacent to the fold line FL is located at the outer end of the first direction D1 at the outer end of the packaging body 100 in the second direction D2. Therefore, the ventilation passage 55 is located at the outer end of the packaging body 100 in the first direction D1 and at the outer end of the packaging body 100 in the second direction D2. Thus, air permeability can be improved throughout the entire first direction D1 and the entire second direction D2 of the packaging body 100. In this embodiment, the first non-joined region R121 is provided in the first laminated region 91, and the second non-joined region R122 is provided adjacent to the fold line FL.

[0058] The absorbent article 1 may be fixed to the inner surface of the packaging film 90. By fixing the absorbent article 1 within the packaging film 90, the position of the absorbent article 1 is not prevented, and the air passage 55 is not blocked by the absorbent article due to the displacement of the absorbent article 1. In this embodiment, the length of the containment space S in the second direction D2 is longer than the length of the absorbent article 1 in the second direction D2. In this configuration, by fixing the absorbent article 1 to the inner surface of the packaging film 90, a space is created between the absorbent article 1 and the air passage 55, which promotes the inflow and outflow of air through the air passage 55. In addition, a release sheet 2 may be provided between the absorbent article 1 and the packaging film. The rigidity of the release sheet 2 makes it easier for the package 100 to maintain a planar state, and makes it easier to maintain the shape of the air passage 55 that extends in the planar direction.

[0059] (3) Continuous Packaging Body According to the Embodiment Next, a continuous packaging body (hereinafter referred to as "continuum") 200 will be described with reference to Figure 6. Figure 6 is a perspective view of the continuous body 200. The continuous body 200 consists of multiple packaging bodies 100 connected in a second direction D2. The continuous body 200 is provided with cutting sections (for example, perforations) for separating adjacent packaging bodies 100. The continuous body is displayed in this form in retail stores, etc., and purchasers can purchase only the required number of packaging bodies 100 by separating them using the cutting sections 201. In the configuration of the packaging bodies 100 of the continuous body 200 shown in Figure 6, the same reference numerals are used for components similar to those of the packaging bodies 100 described above, and their explanation will be omitted.

[0060] The non-jointed region R12 of one packaging body 100 adjacent to the second direction D2 may be positioned on the extension line EL of the non-jointed region R12 of the other packaging body 100 adjacent to the second direction D2. In this embodiment, the extension line EL extends along the second direction D2. The protruding portion 56 of one packaging body 100 adjacent to the second direction D2 may be positioned on the extension line EL of the protruding portion 56 of the other packaging body 100 adjacent to the second direction D2. According to this embodiment, since the protruding portions 56 of each packaging body 100 are provided on the extension line, each protruding portion 56 can work together to improve the airflow of the ventilation passage 55.

[0061] The protruding portion 56 of one packaging body 100 adjacent to the second direction D2 and the protruding portion 56 of the other packaging body 100 adjacent to the second direction D2 are in communication, and the protruding portion 56 may reach the cutting portion. According to this embodiment, the air inside each packaging body 100 can be removed while it is in a continuous state (before being separated into individual packaging bodies 100).

[0062] (3) Manufacturing apparatus for a package according to the embodiment Next, a manufacturing apparatus for a package (hereinafter referred to as the manufacturing apparatus 500) will be described based on Figures 7 to 9. The manufacturing apparatus 500 is an apparatus for manufacturing the above-mentioned package, and the same reference numerals will be used for components similar to those of the above-mentioned package 100, and their description will be omitted. The package 100 manufactured by the manufacturing apparatus 500 comprises an absorbent article 1 and a packaging film 90 for packaging the absorbent article, and the absorbent article is contained in a containment space S sandwiched between a first surface 101 extending in a planar direction including a first direction and a second direction which are orthogonal to each other, and a second surface 102 facing the first surface 101.

[0063] The manufacturing apparatus 500 includes at least a folding mechanism (not shown), a first joining mechanism (not shown), and a second joining mechanism 510. The folding mechanism folds the packaging film 90 with a fold line FL along the first direction D1 as the starting point. The folding mechanism only needs to be configured to fold the packaging film 90, and may fold both the packaging film 90 and the absorbent article 1. Downstream of the cutting mechanism 520, which will be described later, in the transport direction MD, the packaging film 90 is continuous with respect to the transport direction MD. Therefore, the folding mechanism folds the continuous package of packaging film C90. In this embodiment, the folding mechanism folds the continuous package of packaging film C90 with respect to the first fold line FL1 and the second fold line FL2. A well-known device can be used for the folding mechanism. In this embodiment, the transport direction MD is along the second direction D2 of the package 100.

[0064] The first joining mechanism joins the outer edge of the packaging film 90 in a first direction D1 to the packaging film 90 that overlaps with the outer edge, thereby forming a first joint 51. The first joining mechanism may be integrated with a folding mechanism, and the first joint 51 may be formed by applying an adhesive for forming the first joint 51 to the packaging film before folding, and folding the continuous body of the packaging film using the first fold FL1 and the second fold FL2 as starting points. The first joining mechanism can use a well-known device.

[0065] The second joining mechanism 510 is positioned downstream of the first joining mechanism in the transport direction MD, and joins the first surface 101 and the second surface 102 of the packaging film 90 at both ends in the second direction to form a second joining portion 52. The second joining mechanism 510 includes a joining region R11 where the second joining portion 52 is provided, and a non-joining region R12 where the first surface 101 and the second surface 102 of the packaging film 90 are not joined, forming a ventilation passage 55. The packaging film 90 in the non-joining region R12 forms a protruding portion 56 that protrudes outward in the thickness direction T relative to the packaging film 90 in the joining region R11. According to this embodiment, the protruding portion 56 in the non-joining region R12 prevents the packaging films 90 from sticking together, and a package 100 can be manufactured in which the ventilation passage 55 is ensured to be able to breathe.

[0066] Figure 8 is a schematic diagram of the embossed portion 511 of the second joining mechanism 510 as seen from the direction of arrow F. Figure 9 is a schematic cross-sectional view showing the state in which the joining region R11 and the non-joining region R12 are formed by the second joining mechanism 510. The second joining mechanism 510 is arranged on both sides in the thickness direction T with respect to the packaging film 90 and has an anvil portion 512 and an embossed portion 511 that weld the packaging film 90 to form the second joining portion 52. The anvil portion 512 and the embossed portion 511 are arranged opposite each other on both sides in the thickness direction T with respect to the continuous body C100 of the packaging. The anvil portion 512 and the embossed portion 511 are in the form of a pair of rolls and, by rotating, form the second joining portion 52 while sandwiching the continuous body C100 of the packaging between the pair of rolls in the conveying direction MD.

[0067] At least one of the anvil portion 512 and the embossed portion 511 has a convex portion 515 that protrudes to the other side of the anvil portion 512 and the embossed portion 511, corresponding to the joining region R11, and a concave portion 516 that is recessed more than the convex portion 515, corresponding to the non-joining region R12. The axial direction of the embossed portion 511 and the anvil portion 512 is along the first direction of the packaging body, forming the joining region R11 and the non-joining region R12 adjacent in the first direction. As shown in Figure 8, the pressing portion 513, including the convex portion 515 and the concave portion 516, extends axially along the first direction D1 and is arranged side by side in the circumferential direction along the second direction D2. One of the pressing portions 513 arranged side by side in the circumferential direction forms a second joining portion 52 of the packaging body 100 on one side continuous with the transport direction MD, and the other of the pressing portions 513 arranged side by side in the circumferential direction forms a second joining portion 52 of the packaging body 100 on the other side continuous with the transport direction MD. Within each pressing portion 513, the convex portion 515 and the concave portion 516 are arranged adjacent to each other in the axial direction. According to this embodiment, the convex portion 515 can form a bonding region R11, and the concave portion 516 can form a non-bonding region R12. Furthermore, because the concave portion 516 is recessed more than the convex portion 515, the packaging film 90 corresponding to the non-bonding region R12 is less likely to be pressed and tends to float outward in the thickness direction T. Therefore, a protrusion 56 can be formed on the packaging film in the non-bonding region R12.

[0068] In this embodiment, the embossed portion 511 is provided with a convex portion 515 and a concave portion 516, while the anvil portion 512 is not provided with a convex portion 515 and a concave portion 516, and the surface corresponding to the bonding region R11 and the surface corresponding to the non-bonding region R12 are flush. In a modified example, both the embossed portion 511 and the anvil portion 512 may be provided with a convex portion 515 and a concave portion 516.

[0069] The protrusion 515 may have a first protrusion 5151 and a second protrusion 5152 that is recessed more than the first protrusion 5151. The most recessed bottom 516B of the recess 516 may be more recessed than the most recessed bottom 5152B of the second protrusion 5152. The first protrusion 5151 forms a second joint 52, and the second protrusions 5152 between the first protrusions 5151 can form a gap between the second joints 52. Therefore, the second joints 52 can be formed with gaps in a plan view, and a joint region R11 can be formed by the aggregation of multiple second joints 52.

[0070] The depth of the recess 516 is the radial distance between the bottom of the recess and the surface of the embossed portion, the depth of the first protrusion 5151 is the radial distance between the bottom of the first protrusion and the surface of the embossed portion, and the depth of the second protrusion 5152 is the radial distance between the bottom of the second protrusion and the surface of the embossed portion. The depth of the first protrusion 5151 < the depth of the second protrusion 5152 < the depth of the recess 516 may be satisfied.

[0071] The area of ​​the protrusion 515 may be larger than the area of ​​the recess 516. The area of ​​the protrusion in one pressing portion 513 may be larger than the area of ​​the recess. The protrusion 515 forms a joining region R11, and the recess forms a non-joining region R12. According to this embodiment, the joining state can be maintained by increasing the area of ​​the second joining portion 52 while forming a ventilation passage 55 with the non-joining region R12.

[0072] The manufacturing apparatus 500 may have a cutting mechanism 520. The cutting mechanism 520 may be located downstream of the second joining mechanism 510 in the conveying direction. The cutting mechanism 520 has a cutter and cuts the continuous package C100 along the first direction. Individual packages 100 can be obtained by cutting with the cutting mechanism 520.

[0073] The manufacturing apparatus 500 may have a pressing mechanism 530. The pressing mechanism 530 is positioned downstream of the second joining mechanism 510 in the conveying direction MD, and presses the package 100 in the thickness direction by applying a pressing member 531 to the package 100. The pressing mechanism removes air from the containment space, reducing the volume of the package during manufacturing. The pressing mechanism 530 may have the pressing member 531 in contact with an area that does not overlap with at least a part of the non-joining area R12. By having the pressing member in contact with an area that does not overlap with at least a part of the non-joining area, the pressing mechanism 530 can remove air from the containment space without blocking at least a part of the ventilation passage with the pressing member.

[0074] The pressing mechanism 530 may press against individual packages 100, or it may press against packages 100 in a laminate 300 in which multiple packages are stacked in the thickness direction T. In this embodiment, the pressing mechanism 530 presses against the laminate 300, removing the air from each package 100 and housing it within the package 400. This embodiment reduces the volume of the package and improves convenience during storage and distribution.

[0075] Although the present invention has been described in detail using the embodiments described above, it will be clear to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the description herein is for illustrative purposes only and is not intended to be restrictive in any way to the present invention.

[0076] 1: Absorbent article 51: First joint 52: Second joint 55: Ventilation channel 56: Protrusion 90: Packaging film 91: First laminated region 92: Second laminated region 100: Packaging 101: First surface 102: Second surface D1: First direction D2: Second direction FL1: First fold FL2: Second fold G521: Spacing L56: Distance R11: Joint region R111: Outer joint region R112: Central joint region R12: Non-joint region R121: First non-joint region R122: Second non-joint region R13: Edge non-joint region S: Containment space T: Thickness direction 500: Manufacturing equipment 510: Second joining mechanism 511: Embossed part 512: Anvil part 515: Convex part 516: Recessed part 530: Pressing mechanism

Claims

1. A package for an absorbent article, comprising an absorbent article and a packaging film for packaging the absorbent article, the package having a first surface extending in a planar direction including a first direction and a second direction which are mutually orthogonal, and a second surface facing the first surface, the second surface being provided with a first joint portion formed by joining the outer edge of the packaging film in the first direction to the packaging film overlapping the outer edge, the package having a joint region at both ends in the second direction where a second joint portion formed by joining the packaging film of the first surface to the packaging film of the second surface, and a non-joint region where the packaging film of the first surface and the packaging film of the second surface are not joined, the packaging film in the non-joint region forming a ventilation passage that communicates with the inside and outside of a storage space for accommodating the absorbent article, and having a projection that protrudes outward in the thickness direction relative to the packaging film in the joint region.

2. An edge non-jointed region is provided outside the jointed region and the non-jointed region in the second direction, wherein the outer edges of the packaging film in the second direction are not joined, and the edge non-jointed region is connected to the non-jointed region, as described in claim 1.

3. The packaging for an absorbent article according to claim 2, wherein the non-joined edge region is formed over the entire area in the first direction at the outer edge of the packaging in the second direction.

4. The packaging for an absorbent article according to claim 1 or claim 2, wherein the length of the protruding portion in the second direction is longer than the length of the joining region in the second direction.

5. In the second direction, the outer edge of the protrusion extends outward beyond the outer edge of the joining region, the packaging for an absorbent article according to claim 1 or 2.

6. In the second direction, the outer edge of the protrusion reaches the outer edge of the packaging film, the packaging for an absorbent article according to claim 1 or 2.

7. The packaging for absorbent articles according to claim 1 or claim 2, wherein a plurality of the second joints are arranged at intervals in the first direction within the joint area, and the length of the protrusions in the first direction is longer than the interval between the second joints in the first direction.

8. The packaging for an absorbent article according to claim 1 or claim 2, wherein the protrusions are arranged in multiples at intervals in the first direction at each of the two ends of the packaging in the second direction.

9. The packaging for an absorbent article according to claim 1 or claim 2, wherein the joining region comprises an outer joining region located on both sides in the first direction, and a central joining region located between the outer joining regions, and the area ratio of the second joining portion in the outer joining region is higher than the area ratio of the second joining portion in the central joining region.

10. The packaging body for an absorbent article according to claim 1 or claim 2, comprising a first laminated region in which three or more layers of the packaging film are laminated, and a second laminated region in which two layers of the packaging film are laminated, wherein the protrusion is provided in the first laminated region.

11. The packaging for an absorbent article according to claim 10, wherein the non-jointed region comprises a first non-jointed region provided in the first laminated region and a second non-jointed region provided in the second laminated region, and the apex of the protrusion of the first non-jointed region is located further outward in the thickness direction than the apex of the second non-jointed region.

12. The packaging for an absorbent article according to claim 1 or 2, wherein a fold is formed on the outer edge of the packaging in the first direction for folding the packaging film, and the non-joined area is provided adjacent to the fold.

13. The packaging for an absorbent article according to any one of claims 1 to 12 is a continuum of a plurality of continuous packaging bodies in the second direction, wherein the protrusion of one of the packaging bodies for an absorbent article adjacent in the second direction is positioned on the extension of the protrusion of the other packaging body for an absorbent article adjacent in the second direction.

14. A manufacturing apparatus for a package comprising an absorbent article and a packaging film for packaging the absorbent article, wherein the absorbent article is contained within a containment space sandwiched between a first surface extending in a planar direction including a first and second direction which are mutually orthogonal to each other, and a second surface facing the first surface, the apparatus comprising: a folding mechanism for folding the packaging film with a fold along the first direction as the starting point; a first joining mechanism for joining the outer edge of the packaging film in the first direction to the packaging film overlapping the outer edge to form a first joint; and a second joining mechanism disposed downstream of the first joining mechanism in the transport direction, for joining the packaging film of the first surface and the packaging film of the second surface at both ends of the packaging film in the second direction to form a second joint, The second joining mechanism comprises a joining region where the second joining portion is provided, and a non-jointed region where the first surface packaging film and the second surface packaging film are not joined, forming a ventilation passage that communicates with the inside and outside of the storage space for accommodating the absorbent article, wherein the packaging film in the non-jointed region forms a protruding portion that protrudes outward in the thickness direction relative to the packaging film in the joining region.

15. The packaging manufacturing apparatus according to claim 14, wherein the second joining mechanism is arranged on both sides in the thickness direction with respect to the packaging film and has an anvil portion and an embossed portion that weld the packaging film to form the second joining portion, and at least one of the anvil portion and the embossed portion has a convex portion that corresponds to the joining region and protrudes to the other side of the anvil portion and the embossed portion, and a concave portion that corresponds to the non-joining region and is recessed more than the convex portion.

16. The packaging manufacturing apparatus according to claim 15, wherein the protrusion comprises a first protrusion and a second protrusion positioned recessed to the first protrusion, and the most recessed bottom of the recess is more recessed to the most recessed bottom of the second protrusion.

17. The packaging manufacturing apparatus according to claim 16, wherein the area of ​​the convex portion is larger than the area of ​​the concave portion.

18. A packaging manufacturing apparatus according to any one of claims 14 to 17, comprising a pressing mechanism positioned downstream of the second joining mechanism in the transport direction, which presses the packaging body in the thickness direction by applying a pressing member to the packaging body, wherein the pressing mechanism brings the pressing member into contact with an area that does not overlap with at least a portion of the non-joined area.

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