JP2020059545A - Absorbent article package - Google Patents

Abstract

To suppress wrinkles from being formed when a seal member is peeled off from an absorbent article package sealed with the seal member.SOLUTION: The present invention relates to an absorbent article package (10) that has a plurality of absorbent articles (20), a bag member (30), and a seal member (40), and is so constituted that an opening part (31) is formed by separating the seal member (40) from the bag member (30). The seal member (40) has a knob part (41) on one side in a drawing direction in which the seal member is drawn when separated from the bag member (30), has a first adhesion region (141) having the largest adhesive strength per unit area at a part, which is not separated from the bag member (30), of the seal member (40), and also has a second adhesion region (142) having less adhesive strength than the first adhesion region (141) at a part, which is separated from the bag member (30), of the seal member (40) and at a part on the other side from the knob part (41) in the drawing direction.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an absorbent article package.

  As an absorbent article package containing a plurality of absorbent articles such as sanitary napkins, Patent Document 1 has an opening for taking out the napkin and a label seal provided so as to cover the opening. However, a package in which the opening can be resealed by a label seal is disclosed.

China utility model publication No. 2481312

  When the absorbent article package is opened and the contained absorbent article is taken out, a part of the label seal (sealing member) adhered so as to cover the opening is pulled and peeled off to open the opening. The absorbent article is exposed and the absorbent article is taken out from the exposed opening. However, in the conventional absorbent article package, when the label seal is pulled, the label seal is likely to be distorted, and a wrinkle may be formed in a portion where the label seal is generated. When wrinkles are formed on the surface of the label sticker, it becomes difficult to reseal the opening without a gap, which may make it difficult to maintain hygiene of the absorbent article.

  The present invention has been made in view of the above problems, and an object thereof is to form wrinkles when the seal member is peeled off in an absorbent article package that is sealed by the seal member. To suppress.

A main invention for achieving the above object has a plurality of absorbent articles, a bag member that houses the plurality of absorbent articles, and a seal member at least a part of which is provided so as to be separable from the bag member. An absorbent article package, wherein the bag member has an opening defining portion that defines an opening, and the sealing member is bonded to the bag member so as to cover the opening defining portion, and the seal. The opening defining portion is ruptured by separating the part of the member from the bag member to form the opening, and the seal member is pulled when separated from the bag member. Direction, which has a knob portion on one side in the pulling direction, and in the portion of the seal member that is not separated from the bag member when the opening is formed, a unit of the seal member and the bag member. The first adhesive region having the strongest adhesive force per stack, the part of the sealing member that separates from the bag member when the opening is formed, and the knob portion in the pulling direction. Also, in the absorbent article package, the other side has a second adhesive region where the adhesive force per unit area between the seal member and the bag member is weaker than the first adhesive region. .
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that a wrinkle is formed when peeling a sealing member in the absorbent article package body sealed by the sealing member.

It is a schematic perspective view of the absorbent article package 10. It is a figure of the state where the absorbent article package 10 was opened. It is a perspective view showing an absorbent article 20. FIG. 2 is a schematic perspective view showing a state in which a seal member 40 is seen through with respect to the absorbent article package 10 of FIG. 1. It is a top view explaining arrangement | positioning of the sealing member 40 and the opening definition part 32 (perforation 32). 6A and 6B are views for explaining the force acting on the seal member 40 when pulled in the pulling direction. FIG. 6 is a diagram illustrating an adhesive portion 140 provided on the seal member 40. 8A to 8C are diagrams showing an arrangement example of the adhesive force reducing material rd applied to the seal member 40. It is a top view showing the modification of the 1st adhesion field 141 and the 2nd adhesion field 142.

At least the following matters will be made clear by the present specification and the description of the accompanying drawings.
An absorbent article package comprising a plurality of absorbent articles, a bag member that houses the plurality of absorbent articles, and a seal member that is at least partially separable from the bag member, wherein the bag is the bag. The member has an opening defining portion that defines an opening, the sealing member is bonded to the bag member so as to cover the opening defining portion, and separates the part of the sealing member from the bag member. It is configured such that the opening defining portion is broken to form the opening portion, and the seal member is a knob portion on one side in a pulling direction which is a direction in which the seal member is pulled when separated from the bag member. A first adhesive region having the strongest adhesive force per unit area between the seal member and the bag member, in a portion of the seal member that is not separated from the bag member when the opening is formed. Of the seal member, the portion separated from the bag member when the opening is formed, and the portion on the other side of the knob portion in the pulling direction, the seal member and the An absorbent article package characterized in that it has a second adhesive region having a weaker adhesive force per unit area with the bag member than the first adhesive region.

  According to such an absorbent article package, since the adhesive force of the portion where the seal member is separated from the bag member is weak, it is not necessary to apply a large pulling force when the seal member is peeled off at the time of opening, and the seal member is distorted. Is less likely to occur. Thereby, it is possible to suppress the formation of wrinkles on the seal member.

  In the absorbent article package, it is desirable that the second adhesive region is provided in a region on the one side of the opening defining portion on the one side in the pulling direction.

  According to such an absorbent article package, the adhesive strength is weakened in the region where the seal member is first peeled from the bag member, so that when the absorbent article package is opened, the seal member is a bag member. Is easily peeled off, and strain is less likely to be formed. This makes it easier to prevent wrinkles from being formed on the seal member.

  In the absorbent article package, it is preferable that the second adhesive region is provided in a region on the other side of the opening defining portion on the other side in the pulling direction.

  According to such an absorbent article package, since the adhesive force in the region where the opening defining portion is broken and the opening is formed is weakened, the opening defining portion is opened when the absorbent article package is opened. The force required to break the part can be reduced. That is, since excessive pulling force does not act, it becomes easier to suppress the formation of wrinkles on the seal member.

  In this absorbent article package, it is desirable that the adhesive force per unit area between the seal member and the bag member in the knob portion is weaker than that in the second adhesive region.

  According to such an absorbent article package, even when the seal member is adhered to the bag member, the knob portion can be easily picked and the seal member can be easily peeled off.

  In the absorbent article package, at least a part of the second adhesive region is a part that is not separated from the bag member when the opening is formed in the sealing member in the pulling direction, It is desirable that it spans the part to be separated.

  According to such an absorbent article package, when the opening is formed, the seal member is pulled along the pulling direction from the separating portion to the non-separating portion across the opening defining portion. By preventing the adhesive force from fluctuating abruptly at the boundary between the non-separating portion and the non-separating portion, it is possible to suppress the formation of wrinkles on the seal member during the opening operation.

  Such an absorbent article package, which has a left-right direction intersecting with the pulling direction, the opening defining portion has a curved portion that is convex on the one side in the pulling direction, and the sealing member The length in the pulling direction of a portion of the second adhesive region where the portion that is not separated from the bag member when the opening is formed and the second adhesive region overlap is the longest in the center in the left-right direction. desirable.

  According to such an absorbent article package, since the opening defining portion intersects the pulling direction at the center in the left-right direction, in order to break the opening defining portion, a larger force is applied to the central portion in the left-right direction. Need to work. Therefore, by enlarging the region where the adhesive force is weak in the center portion in the left-right direction, the seal member is easily peeled off easily during the opening operation, and it is possible to more easily suppress the formation of wrinkles.

  In this absorbent article package, it is desirable that the curved portion has a constant curvature from the center in the left-right direction to both ends.

  According to such an absorbent article package, when the opening defining portion is broken to form the opening, the breaking direction of the opening defining portion gradually changes along the curved portion with respect to the pulling direction. Go. At this time, since the curvature of the curved portion is constant, the variation ratio of the breaking direction of the opening defining portion with respect to the pulling direction becomes constant, and the opening defining portion is easily broken. Therefore, it is difficult for an extra force to act, and it becomes easy to suppress the formation of wrinkles on the seal member.

  In this absorbent article package, it is preferable that the absorbent article package has a left-right direction that intersects with the pulling direction, and the opening defining portion has linear portions along the pulling direction on both sides in the left-right direction.

  According to such an absorbent article package, in the straight portion, the direction in which the seal member is pulled and the breaking direction of the opening defining portion are aligned, so that when the seal member is peeled off to form the opening portion. , It is hard to apply excessive force. Therefore, it becomes easy to suppress the formation of wrinkles on the seal member.

  In this absorbent article package, it is desirable that the absorbent article package has the straight line portion in a portion serving as an upper surface.

  According to such an absorbent article package, on the upper surface side, the force pulling the seal member vertically upward along the pulling direction and the force pulling rearward in the front-rear direction may act to disperse the force. . Therefore, by breaking the opening defining portion as a straight line along the front-rear direction on the upper side surface, it is possible to easily open the absorbent article package while suppressing the formation of wrinkles.

  In the absorbent article package, the adhesive force per unit area in the region of the seal member on the other side of the opening defining portion in the pulling direction is the first It is desirable that it is the same as the adhesive strength of the adhesive area.

  According to such an absorbent article wrapping body, it is a part that is the end of peeling off the seal member when opening the absorbent article wrapping body, and serves as a fulcrum when resealing the absorbent article wrapping body. The adhesive strength is strongest in the area. As a result, the seal member is prevented from being separated from the bag member, and the opening and resealing operations can be stably performed.

  Such an absorbent article package, which has a left-right direction intersecting with the pulling direction, both ends in the left-right direction of the seal member, and a curvature at an edge of an upstream side portion in the pulling direction, It is desirable that the curvature is larger than the curvature at the edge of the knob portion.

  According to such an absorbent article package, the force acting in the pulling direction is stronger than the force acting inward in the left-right direction by curving the edge portion at the corner portion of the seal member so as to easily follow the pulling direction. To increase the impact of. As a result, distortion is less likely to occur at the corners of the seal member, and wrinkles can be less likely to be formed.

  In the absorbent article package, the second adhesive region is provided on an adhesive provided on one side in the thickness direction of the seal member and on the one side in the thickness direction with respect to the adhesive. It is desirable to have an adhesive strength reducing material.

  According to such an absorbent article package, by adjusting the arrangement and application amount of the adhesive force reducing material, the adhesive force per unit area of the entire second adhesive region can be freely adjusted while the wrinkles are formed on the seal member. It can be easily peeled off smoothly without forming a gap.

  In such an absorbent article package, the rigidity of the sealing member is preferably 0.30 mN or more and 1.70 mN or less when measured based on the Gurley method defined in JIS L1096: 2010. .

According to such an absorbent article package, it is easy to open and reseal the seal member, and wrinkles are not easily formed when the seal member is peeled off, and the hermeticity is ensured when resealing. You can make it easier.
=== Embodiment ===

<Basic configuration of absorbent article package 10>
FIG. 1 is a schematic perspective view of the absorbent article package 10, and FIG. 2 is a diagram showing a state where the absorbent article package 10 is opened. FIG. 3 is a perspective view showing the absorbent article 20 according to the present embodiment. FIG. 4 is a schematic perspective view showing a state where the seal member 40 is seen through the absorbent article package 10 of FIG. 1.

  As shown in FIGS. 1 and 2, the absorbent article package 10 includes a plurality of absorbent articles 20, a bag member 30 for housing the plurality of absorbent articles 20, and a seal member 40. There is. Moreover, the absorbent article package 10 has a vertical direction, a front-back direction, and a left-right direction that intersect with each other. In the vertical direction, the side from which the absorbent article 20 is taken out is "upper", and the opposite side is "lower". Also in the front-back direction, the side from which the absorbent article 20 is taken out is “front”, and the opposite side is “rear”.

  Although the sanitary napkin (hereinafter referred to as “napkin 20”) will be described as an example of the absorbent article 20 according to the present embodiment, the absorbent article 20 is not limited to the sanitary napkin, and may be a panty liner or light incontinence. Pads etc. are also included.

  As shown in FIG. 3, the napkin 20 is an individual wrapping body in which an absorbent main body (not shown) is wrapped with a wrapping sheet (wrapping material) 21. In the product state (FIG. 3), the napkin 20 has a horizontal direction, a vertical direction, and a thickness direction that are orthogonal to each other. In the napkin 20 in the present embodiment, the absorbent main body and the packaging sheet 21 are stacked in the thickness direction in the unfolded state, and are folded in the vertical direction so that the packaging sheet 21 is on the outside (for example, folded in three in the vertical direction). Has been). Then, the side seal portions 23, which are formed by joining the facing surfaces of the packaging sheet 21 along the vertical direction, are formed at both lateral ends of the napkin 20, and the opening of the napkin 20 is fastened with the lead tape 22. There is. As a result, the individual wrapping body as shown in FIG. 3 is obtained. Examples of the joining method of the packaging sheet 21 include well-known joining methods such as heat sealing, ultrasonic sealing, adhesives, and combinations thereof.

  The bag member 30 houses a plurality of napkins 20 as shown in FIG. In the bag member 30, each of the napkins 20 is inserted such that the side seal portions 23 at both ends of the napkin 20 in the horizontal direction are along both left and right sides of the bag member 30. Further, the plurality of napkins 20 are housed so as to be arranged in the front-rear direction of the bag member 30. At that time, each napkin 20 is inserted so that the surface on which the lead tape 22 is fastened faces the rear side of the bag member 30.

  Further, as shown in FIG. 4, in the state before the absorbent article package 10 is first opened, the bag member 30 has an opening defining portion 32 such as a perforation for defining the opening 31 shown in FIG. (Hereinafter “perforation 32”). In FIG. 4, the range of the seal member 40 is indicated by a chain double-dashed line for the sake of convenience, and the seal member 40 is transparently shown in order to make the position of the perforations 32 (dotted line portion) easy to understand. Since the perforation 32 is located inside the outer edge of the seal member 40, the entire perforation 32 is covered by the seal member 40.

  As can be seen from FIG. 4, the seal member 40 is provided so as to cover at least a part of the upper surface of the absorbent article package 10 and further cover at least a part of the front surface of the absorbent article package 10. That is, the seal member 40 is provided so as to straddle the boundary between the upper surface and the front surface of the absorbent article package 10. The seal member 40 is provided with a knob portion 41, and the user can easily open and reseal the absorbent article package 10 by pinching and pulling the knob portion 41.

<Opening of the absorbent article package 10>
Next, the operation of opening the absorbent article package 10 will be described. FIG. 5 is a plan view illustrating the arrangement of the seal member 40 and the opening defining portion 32 (perforations 32). The seal member 40 has an adhesive portion 140 on one surface in the thickness direction (the surface facing the bag member 30), and is adhered (attached) to the bag member 30 via the adhesive portion 140. Has been done. In FIG. 5, the state in which the seal member 40 is bonded to the bag member 30 so as to cover the opening defining portion 32 is shown in a plan view. The details of the adhesive section 140 will be described later.

  Further, when the seal member 40 is separated from the bag member 30, the direction in which the seal member 40 is pulled is referred to as the “pulling direction”. That is, the pulling direction is a direction along the up-down direction and the front-back direction of the absorbent article package 10 (bag member 30). The above-mentioned knob portion 41 is provided on one side (upstream side) in the pulling direction.

  When the absorbent article package 10 is opened for the first time, the user holds the knob 41 of the seal member 40 and partially peels off the seal member 40 from the upstream side to the downstream side in the pulling direction. For example, in FIG. 5, the seal member 40 is gradually peeled from the lower side in the vertical direction toward the upper side. At this time, only the seal member 40 separates from the bag member 30 until the peeling of the seal member 40 reaches the point A located on the most upstream side in the pulling direction on the perforations 32. Then, when the peeling of the seal member 40 reaches the point A, the perforations 32 start to break, and the inner portion of the bag member 30 surrounded by the perforations 32 remains attached to the seal member 40 and the bag together. Separate from the member 30.

  That is, in the seal member 40, a region outside the perforations 32 (region shaded in FIG. 5) is a portion where the seal member 40 is separated from the bag member 30 and peeled off. This area is referred to as a separating section 45. On the other hand, a region surrounded by the perforations 32 (and a region on the downstream side of the perforations 32 in the pulling direction) is a portion where the seal member 40 and the bag member 30 are not separated. This area is referred to as a non-separation portion 46.

  In this way, by pulling the seal member 40 (knob portion 41) in the pulling direction, the broken perforation 32 becomes the opening portion 31 on the front surface and the upper surface of the bag member 30, and the user opens the napkin from the opening portion 31. 20 can be taken out (see FIG. 2). In addition, even after the absorbent article package 10 is once opened, the opening 31 is covered with the seal member 40, and the seal member 40 is reattached to the bag member 30 via the adhesive portion 140, so that the opening 31 is opened. Can be resealed. As a result, it is possible to repeatedly open and reseal, and it is possible to keep the napkin 20 clean even after the package 10 is opened.

  However, wrinkles are formed on the seal member during repeated opening and resealing operations, which may make it difficult to perform resealing firmly. 6A and 6B are views for explaining the force acting on the seal member 40 when pulled in the pulling direction.

  As described above, when opening the absorbent article package 10, first, the knob portion 41 of the seal member 40 is pulled from the upstream side to the downstream side in the pulling direction. Then, as shown in FIG. 6A, a force F1 toward the downstream side in the pulling direction acts on the boundary portion L1 between the seal member 40 and the bag member 30. Then, the separating portion 45 of the seal member 40 that has been bonded (attached) to the bag member 30 is gradually peeled off by the force F1 toward the downstream side in the pulling direction.

  As it is, when the knob portion 41 is pulled to the downstream side in the pulling direction, the boundary portion L2 between the seal member 40 and the bag member 30 spreads in the left-right direction as shown in FIG. 6B, and the pulling direction with respect to the boundary portion L2. The force F2 toward the downstream side acts. At this time, a force F2 'is applied to both ends L2s and L2s of the boundary part L2 in the left-right direction, which are directed inward in the pulling direction and in the left-right direction. That is, the boundary portion L2 between the seal member 40 and the bag member 30 is in a state of being pulled obliquely at the left and right ends L2s and L2s. Therefore, the seal member 40 is pulled also in a direction different from the pulling direction at the left and right ends L2s and L2s. As a result, there is a risk that distortion will occur in that portion and wrinkles will be formed on the seal member 40. In particular, when it is necessary to pull the separating portion 45 of the seal member 40 from the bag member 30 with a large force, the strain increases and wrinkles are easily formed.

  Further, when the bag member 30 is formed of a soft and easily deformable material such as vinyl resin, the bag member 30 itself deforms when the seal member 40 is peeled off, so that the pulling force acting on the seal member 40. The direction of changes easily. Even in such a case, distortion is likely to occur, so that wrinkles are easily formed by the seal member 40.

  When such wrinkles are formed on the seal member 40, when the absorbent article package 10 is opened and then the opening 31 is resealed by the seal member 40, the seal member is formed on the part where the wrinkles are formed. It becomes difficult for 40 to adhere to the bag member 30. That is, a gap is likely to be formed between the seal member 40 and the bag member 30, and the opening 31 is not easily resealed. As a result, it may be difficult to maintain the hygiene of the napkin 20 housed inside the bag member 30.

  On the other hand, in the absorbent article package 10 of the present embodiment, wrinkles are formed when the seal member 40 is peeled off by adjusting the adhesive force of the adhesive portion 140 provided on the seal member 40. Is suppressed. Specifically, in the above-described separating portion 45 of the seal member 40, by providing a region having a weaker adhesive force than a region having the strongest adhesive force, distortion is less likely to occur when the seal member 40 is peeled off, It suppresses the formation of wrinkles.

  FIG. 7 is a diagram illustrating the adhesive portion 140 provided on the seal member 40. The drawing on the left side of FIG. 7 shows a plan view of the seal member 40, and the drawing on the right side shows a sectional view of the seal member 40. The adhesive portion 140 is formed by applying a predetermined adhesive material ad in a layered manner on the entire one surface in the thickness direction of the seal member 40 (the surface facing the bag member 30). However, in the seal member 40, the knob portion 41 is easier to grip if it is not adhered (attached) to the bag member 30, and therefore the adhesive material ad may not be applied to the knob portion 41. As the adhesive material ad, for example, a commercially available adhesive agent, a hot melt type adhesive agent, or the like can be used.

  Further, a predetermined adhesive strength reducing material rd is partially applied to a part of one surface in the thickness direction of the layer of the adhesive material ad (the surface facing the bag member 30), so The adhesive force of the material ad is reduced. In FIG. 7, the adhesive strength reducing material rd is applied to the area of the adhesive portion 140, which is indicated by the hatched portion on the upstream side of the predetermined position P1 in the pulling direction, on the layer to which the adhesive material ad is applied. There is. The specific arrangement of the adhesive strength reducing material rd in the adhesive portion 140 will be described later. As the adhesive strength reducing material rd, for example, transparent ink containing titanium particles can be used.

  Hereinafter, in the adhesive portion 140 formed on the seal member 40, a region having a strong adhesive force by the adhesive material ad is referred to as a first adhesive region 141, and the adhesive force reducing material rd is provided so as to overlap the adhesive agent ad. As a result, a region that does not include the knob portion 41 (a region on the downstream side in the pulling direction with respect to the knob portion 41) among the regions in which the adhesive force is reduced as compared with the first adhesive region 141 is the second adhesive region 142 (FIG. 7). That is, in the present embodiment, the first adhesive region 141 is the region where the adhesive force per unit area between the seal member 40 and the bag member 30 is the strongest, and the second adhesive region 142 is the seal member 40 and the bag member 30. The adhesive force per unit area is weaker than that of the first adhesive region 141.

  As described above, in the non-separated portion 46 of the seal member 40, which is not separated from the bag member 30 when the opening 31 is formed, the first adhesive region 141 is provided, so that the first adhesive region 141 is provided. In, it is possible to make the seal member 40 (non-separating portion 46) and the bag member 30 difficult to peel off. Therefore, it is possible to prevent the entire seal member 40 from being completely separated from the bag member 30 during the opening operation of the absorbent article package 10. On the other hand, since the second adhesive area 142 is provided in the separating portion 45 that separates from the bag member 30 when the opening 31 is formed, the seal member 40 (separating portion 45) is provided in the second adhesive area 142. It can be easily peeled off from the bag member 30. Therefore, when peeling off the seal member 40, a large pulling force is not required, and the seal member 40 is less likely to be distorted. Thereby, it is possible to suppress the formation of wrinkles on the seal member 40.

  The second adhesive region 142 is provided in a region upstream (one side) of the most upstream (one side) end (point A in FIG. 7) of the perforation (opening defining portion) 32 in the pulling direction. It is desirable that the This region is a region of the separating portion 45 of the seal member 40 that first comes off from the bag member 30 when the absorbent article package 10 is opened. Therefore, by providing the second adhesive region 142 in the region to weaken the adhesive force, the seal member 40 is easily peeled off from the bag member 30, and distortion is less likely to occur. This makes it easier to prevent wrinkles from being formed on the seal member 40.

  Further, the second adhesive region 142 is provided in a region on the downstream side (other side) than the most upstream side (one side) end (point A in FIG. 7) of the perforation (opening defining portion) 32 in the pulling direction. It may be. This area is a portion where the perforation (opening defining portion) 32 is broken and the opening 31 is formed when the absorbent article package 10 is opened. That is, it is a region that requires a force for breaking the perforation 32 in addition to the force for peeling the seal member 40 from the bag member 30. Therefore, when the adhesive force in the area is high, it is necessary to pull the seal member 40 with a larger force, and the seal member may be distorted to easily form wrinkles. Therefore, by weakening the adhesive force in the region, the force required to break the perforation 32 is prevented from becoming too large. This makes it easier to prevent wrinkles from being formed on the seal member 40.

  In the present embodiment, as shown in FIG. 7, both the region on the upstream side and the region on the downstream side of the most upstream end (point A in FIG. 7) of the perforation (opening defining portion) 32 in the pulling direction. The second bonding area 142 (hatched portion in FIG. 7) is provided in the. Therefore, when the seal member 40 starts to peel from the bag member 30 and when the perforation (opening defining portion) 32 is broken to form the opening portion 31, the seal member 40 is wrinkled. The formation can be effectively suppressed.

  In the absorbent article package 10, the adhesive force per unit area of the knob portion 41 is weaker than that of the second adhesive region 142. As a result, even when the opening 31 is sealed by the seal member 40, that is, the adhesive portion 140 of the seal member 40 is adhered to the bag member 30, the adhesive force of the knob portion 41 to the bag member 30 is increased. Can be weakened. Therefore, when opening the absorbent article package 10, the user can easily pinch the knob portion 41 and easily peel off the seal member 40. As a method of weakening the adhesive force in the knob portion 41, the density (amount per unit area) of the adhesive force reducing material rd provided on the adhesive material ad may be increased, or the adhesive material ad may be attached to the knob portion 41. There is a method of not applying it.

  8A to 8C are diagrams showing an arrangement example of the adhesive force reducing material rd applied to the seal member 40. As described above, in the second adhesive region 142, the adhesive force reducing material rd is provided so as to overlap the adhesive ad, so that the adhesive force is reduced in the region where the adhesive force reducing material rd is provided. At that time, the adhesive force per unit area of the second adhesive region 142 can be adjusted by changing the arrangement of the adhesive force reducing material rd.

  In FIG. 8A, in the second bonding region 142, the adhesive strength reducing material rd is arranged so that a plurality of layers of the band-shaped adhesive strength reducing material rd along the pulling direction are arranged in the left-right direction. That is, the adhesive ad and the adhesive strength reducing material rd are so-called vertical stripes, which are continuously arranged along the pulling direction. If the adhesive ad and the adhesive strength reducing material rd are lateral stripes continuously arranged in the left-right direction, regions having strong adhesive force and regions having weak adhesive force are alternately arranged in the pulling direction. Therefore, when the seal member 40 is peeled off, the seal member 40 is easily caught in a region having a strong adhesive force, and the seal member 40 is easily distorted to form wrinkles. On the other hand, in the vertical stripe arrangement as shown in FIG. 8A, the seal member 40 can be easily peeled off smoothly without forming wrinkles.

  Further, in FIG. 8B, in the second adhesive region 142, fine dot-shaped adhesive force reducing materials rd are evenly distributed and arranged. With such an arrangement, the adhesive force becomes uniform over the entire second adhesive region 142, so that local concentration of stress when peeling off the seal member 40 is suppressed. Further, in FIG. 8C, the adhesive force reducing material rd is arranged over the entire second adhesive region 142, and the density of the adhesive force reducing material rd is reduced to reduce the adhesive force in the second adhesive region 142. There is. Even in such a case, since the adhesive force becomes uniform over the entire second adhesive region 142, local concentration of stress when peeling off the seal member 40 is suppressed.

  As described above, in the present embodiment, the shape and size of the second adhesive region 142 can be freely adjusted according to the arrangement of the adhesive force reducing material rd. That is, the adhesive force per unit area of the entire second adhesive region 142 is freely adjusted by adjusting the arrangement and the application amount of the adhesive force reducing material rd, and smoothly without forming wrinkles on the seal member 40. It can be easily peeled off.

  The relationship between the adhesive force (adhesive strength) of the seal member 40 and the actual ease of peeling was verified by conducting the following experiment. That is, using a plurality of types of seal members 40 having different adhesive strengths (adhesive strengths) as samples, a test was conducted in which 30 users actually opened the package, and "easy / preferred, neither can be said, difficult to open" The evaluation was carried out on a three-point scale of "/ not so preferable". Then, the one that "easy to open / preferable" was 70% or more was regarded as an appropriate opening strength.

  As a specific experiment, first, an auxiliary knob (not shown) made of an aluminum sheet, which is stronger than the breaking strength of the seal member 40 and hardly expands, is attached to a portion corresponding to the knob portion 41. Next, the seal member 40 having the entire width in the left-right direction of the adhesive portion 140 and the package (bag member 30) corresponding to the width are cut out and held in a tensile tester (a tensile tester manufactured by Instron Co., Ltd.), and then 180 degrees. The bag member 30 and the seal member 40 were separated in the direction. Then, the magnitude of the force required to peel the seal member 40 (sample) by a predetermined width was measured, and the adhesive strength was evaluated. In addition, the moving speed of the chuck holding the test piece during the test with the Instron tensile tester was 100 mm / min for the measurement.

  As a result, when the adhesive strength of the seal member 40 is 3.2 N / 25 mm to 5.8 N / 25 mm in the range from the opening start position to the opening of 25 mm in the pulling direction, "easy / preferable" is evaluated. It exceeds 70%. That is, in the absorbent article package 10 according to the present embodiment, it has been clarified that the second adhesive region 142 has an appropriate adhesive strength of 3.2 N / 25 mm to 5.8 N / 25 mm. Therefore, it is desirable that the adhesive strength of the first adhesive region 141 is 6.0 N / 25 mm or more.

  In addition, as shown in FIG. 7, in the second adhesion region 142, in the pulling direction, the non-separating portion 46 where the sealing member 40 does not separate the bag member 30 and the separating portion 45 (where the sealing member 40 separates from the bag member 30). It is arranged so as to straddle the shaded display portion in FIG. 7). That is, the second bonding region 142 is arranged so as to straddle the end A on the most upstream side of the opening defining portion 32 (perforations 32) in the pulling direction. When the absorbent article package 10 is opened, the seal member 40 is pulled along the pulling direction from the separating portion 45 to the non-separating portion 46 across the perforations 32. At this time, if the adhesive force sharply changes at the boundary between the non-separating portion 46 and the separating portion 45, in addition to the force for breaking the perforation 32, a larger force is required to peel off the adhesive portion 140, and the perforation 32 Wrinkles may easily occur in the vicinity of. Therefore, in the present embodiment, by disposing the second adhesive region 142 so as to straddle the separating portion 45 and the non-separating portion 46 in the pulling direction, the adhesive force in the separating portion 45 and the non-separating portion are defined with the perforation 32 as a boundary. The adhesive force in the portion 46 is prevented from changing rapidly. Accordingly, it is possible to easily suppress the formation of wrinkles on the seal member 40 during the opening operation.

  Further, as shown in FIG. 7, the opening defining portion 32 (perforation 32) has a substantially parabolic curved portion 32c that is convex on the upstream side (one side) in the pulling direction, as shown in FIG. are doing. Further, the closer to the center in the left-right direction, the length Ls in the pulling direction of the portion where the second adhesive region 142 and the non-separation portion 46 overlap is longer. In other words, the closer to the center in the left-right direction, the larger the area of the overlapping portion of the second adhesive region 142 and the non-separating portion 46. The curved portion 32c of the perforation 32 intersects the pulling direction at the center (point A) in the left-right direction, and has a parabolic shape in which the component in the pulling direction gradually increases toward both sides in the left-right direction. That is, when the seal member 40 is pulled in the pulling direction, the perforations 32 have a structure such that the perforations 32 are more likely to break along the pulling direction toward the left and right sides. Therefore, when the seal member 40 is peeled off to break the perforation 32, it is necessary to apply a large force to the central portion in the left-right direction. Therefore, in the present embodiment, by increasing the area of the second adhesive region 142 toward the central portion in the left-right direction in the non-separation portion 46, the adhesive is formed near the region where the perforation 32 and the pulling direction intersect (near point A). I try not to become stronger. As a result, the seal member 40 is easily peeled off during the unsealing operation, and it is possible to more easily suppress the formation of wrinkles.

  In addition, the perforation 32 has straight line portions 32s along the pulling direction at both ends in the left-right direction of the curved portion 32c. In this straight line portion 32s, the direction in which the seal member 40 is pulled and the direction in which the perforations 32 are broken are aligned, and therefore, when peeling off the seal member 40 to form the opening 31, it is difficult to apply an unreasonable force. It is difficult for wrinkles to be formed on the seal member 40. Further, as shown in FIG. 7, a half or more region of the linear portion 32s is provided in the first adhesive region 141 of the adhesive portion 140, which has a strong adhesive force. Since the force required to separate the seal member 40 from the bag member 30 is large in the first adhesive region 141, the force required to break the perforation 32 in the straight line portion 32s is reduced, and thus the vicinity of the straight line portion 32s is reduced. It becomes difficult for an extra force to act on the area of, and it becomes difficult to form wrinkles.

  Further, it is desirable that the linear portion 32s be provided on the upper surface side of the absorbent article package 10. As apparent from FIGS. 1 and 5, the pulling direction when peeling off the seal member 40 is the direction along the vertical direction (vertical direction) on the front surface side of the absorbent article package 10, but On the upper surface side of the article package 10, the direction is along the front-back direction. Therefore, when opening the absorbent article, first, the seal member 40 is pulled upward in the vertical direction on the front surface side of the absorbent article package 10, and then in the front-back direction on the upper surface side of the absorbent article package 10. The seal member 40 is pulled to the rear side. On the other hand, it is difficult to suddenly change the pulling direction at the boundary between the front surface and the upper surface of the absorbent article package 10, and in reality, the sealing member 40 is vertically above the upper surface side of the absorbent article package 10. The pulling force acts on. That is, on the upper surface side of the absorbent article package 10, a force pulling the seal member 40 vertically upward and a force pulling the seal member 40 rearward in the front-rear direction act. In this case, the tensile force may be dispersed and it may be difficult to correctly break the perforations 32. Therefore, in the present embodiment, the perforations 32 on the upper surface side of the absorbent article package 10 are straight lines along the front-rear direction, so that the perforations 32 are easily broken in the front-rear direction on the upper side surface. Thereby, it is possible to easily open the absorbent article package 10 while suppressing the formation of wrinkles.

  The curved portion 32c has a constant curvature from the center in the left-right direction to both ends. When the opening portion 31 is formed, after the perforation 32 is started to break at the point A located on the most upstream side of the perforation 32 in the pulling direction, the perforation 32 is moved to both the downstream side in the pulling direction and the left and right sides. The perforations 32 are successively broken along the curved portion 32c. That is, the direction in which the perforation 32 breaks gradually changes with respect to the pulling direction. At this time, since the curvature of the curved portion 32c is constant, the rate of change in the breaking direction of the perforation 32 with respect to the pulling direction becomes constant, and the perforation 32 can be easily broken smoothly. Therefore, it becomes difficult for an extra force to act when the perforation 32 is broken, and it is possible to suppress the formation of wrinkles on the seal member 40.

  Further, as shown in FIG. 5, in the seal member 40, the curvature at both ends in the left-right direction and at the edge of the corner portion 40ec on the upstream side in the pulling direction is larger than the curvature at the edge of the knob portion 41. Is formed. That is, the seal member 40 of the present embodiment has a shape such that the degree of bending of the edge portion increases near the corner portion 40ec. As described with reference to FIG. 6, when the absorbent article package 10 is opened, when the knob portion 41 is grasped and the seal member 40 is peeled off, when the distance from the knob portion 41 in the left-right direction is long, Since the force directed inward in the direction becomes large, wrinkles are easily formed. Therefore, in the vicinity of the corner portion 40ec of the seal member 40, by curving the edge portion so as to easily follow the pulling direction, the influence of the force acting in the pulling direction becomes larger than the force acting in the left-right direction. To As a result, distortion is less likely to occur at the corner portion 40ec of the seal member 40, and wrinkles can be less likely to be formed.

  In the pulling direction of the seal member 40, the adhesive force per unit area at the terminal end portion 40ed, which is a region on the downstream side of the most downstream end 32e of the perforation 32, is at least equivalent to the first adhesive region. Yes (see FIG. 7). That is, the adhesive force per unit area in the terminal end portion 40ed is the strongest in the adhesive portion 140. The end portion 40ed is a portion that serves as an end portion for peeling off the seal member 40 when the absorbent article package 10 is opened, and when the absorbent article package 10 is resealed, the end portion 40ed serves as a fulcrum. Then, the seal member 40 is attached to the bag member 30 so as to cover the opening 31. Therefore, the seal member 40 needs to be permanently joined to the bag member 30 at the terminal end 40ed. In the present embodiment, since the adhesive force per unit area in the terminal end portion 40ed is the largest, it is possible to prevent the seal member 40 from being separated from the bag member 30 during the opening operation of the absorbent article packaging body 10, and to open and re-open it. The sealing operation can be performed stably.

  In the present embodiment, the specific rigidity (rigidity) range of the seal member 40 is 0.30 to 1.70 mN /. The rigidity of the seal member 40 was measured as follows based on the bending resilience A method (Gurley method) defined in JIS L1096: 2010. First, a test piece having a plurality of types of rigidity is prepared, with the opening direction (corresponding to the pulling direction) of the sealing member 40 being the length direction and the direction orthogonal thereto being the width direction. The test piece has a length of 38 m and a width of 25 mm, and a plurality of test pieces are collected. Then, using a Gurley stiffness tester (for example, the Gurley stiffness tester manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd.), the long side of the test piece was made vertical and attached to the chuck of the movable arm of the tester, and the Attach the specified weight. Next, the movable arm is rotated to the left or right at a prescribed speed, and after the lower end of the test piece once contacts the pendulum, the scale when the pendulum is separated is read. This test is repeated multiple times, and the bending resistance (Gurley stiffness) is calculated from the average of the measured values.

  As a result, if the rigidity (rigidity / softness) of the seal member 40 is less than 0.30 mN, wrinkles are likely to occur on the seal member 40 during opening and resealing, and the seal member 40 is sufficiently resealed. It was confirmed that it could not be sealed. On the other hand, when the rigidity of the seal member 40 is larger than 1.70 mN, it was confirmed that the operability is poor at the time of opening and the user is given an impression that the napkin 20 (product) is difficult to remove from the bag member 30. . In the present embodiment, the rigidity of the seal member 40 is set to 0.30 mN or more and 1.75 mN or less, so that the opening / resealing operation is easily performed, and wrinkles are less likely to be formed, and the hermeticity is easily ensured. be able to. Further, as described above, the napkin 20 can also have a function as a lid for preventing the napkin 20 from popping out to the upper surface side of the bag member 30.

<Modification>
In FIG. 7, the range of the first adhesive area 141 and the second adhesive area 142 provided in the seal member 40 has been described, but the first adhesive area 141 and the second adhesive area 142 can be modified as follows. Is. FIG. 9 is a plan view showing a modified example of the first adhesive area 141 and the second adhesive area 142.

In this modification, the second adhesive region is formed over almost the entire area (excluding the knob portion 41) of the separating portion 45 (the shaded display portion in FIG. 9) which is an area outside the perforations 32 in the seal member 40. 142 (hatched portion in FIG. 9) is provided. As described above, the separating portion 45 is an area where the seal member 40 is peeled off and separated from the bag member 30 when the absorbent article package 10 is opened. Therefore, it is desirable that the separation member 45 can easily separate the seal member 40 from the bag member 30. Therefore, by providing the second adhesive region 142 in almost the entire region of the separating portion 45 to weaken the adhesive force per unit area, the seal member 40 can be easily peeled from the bag member 30. With this configuration, when peeling off the seal member 40, it becomes difficult to apply extra force to the seal member 40, and it is possible to more easily suppress the formation of wrinkles.
=== Other Embodiments ===

  Although the embodiments of the present invention have been described above, the above embodiments are for the purpose of facilitating the understanding of the present invention, and are not for limiting and interpreting the present invention. Further, it is needless to say that the present invention can be modified or improved without departing from the spirit of the present invention and that the present invention includes equivalents thereof.

  In the above-described embodiment, the adhesive portion 140 provided on the seal member 40 has a weaker adhesive force per unit area than the first adhesive region 141 having the highest adhesive force per unit area and the first adhesive region 141. Although the example including the second adhesive region 142 has been described, the configuration of the adhesive portion 140 is not limited to this. For example, the first adhesive region 141 and the second adhesive region 142 may have another adhesive region having a different adhesive force per unit area (for example, a third adhesive region (not shown)).

  Further, in the above-described embodiment, the perforation is given as an example in the opening defining portion 32 that defines the opening 31 of the bag member 30, but the invention is not limited thereto. For example, the opening defining portion 32 may be a cut formed so as not to penetrate from the outer side to the inner side of the bag member 30. That is, when the user tries to peel off the seal member 40 at the time of first opening, a fragile portion that is broken by the adhesive force of the seal member 40 may be provided in the bag member 30 in advance as the opening defining portion 32. Good.

10 absorbent article packaging,
20 absorbent articles (sanitary napkins),
21 packaging sheet, 22 lead tape, 23 side seal part,
30 bag members,
31 openings,
32 perforations (opening regulating portion), 32c curved portion, 32s linear portion, 32e end,
40 sealing member,
40ec corner, 40ed end,
41 knob part, 45 separation part, 46 non-separation part,
140 adhesive section 141 first adhesive area, 142 second adhesive area,
Ad adhesive material, rd Adhesive strength reducing material

Claims (13)

An absorbent article package having a plurality of absorbent articles, a bag member that houses the plurality of absorbent articles, and at least a seal member that is separably provided from the bag member.
The bag member has an opening defining portion that defines an opening,
The seal member is adhered to the bag member so as to cover the opening defining portion,
The opening defining portion is broken by separating the part of the sealing member from the bag member to form the opening,
The seal member has a knob portion on one side in a pulling direction which is a direction in which the seal member is pulled when separated from the bag member,
In the portion of the seal member that is not separated from the bag member when the opening is formed, a first adhesive region having the strongest adhesive force per unit area between the seal member and the bag member,
Of the seal member, the portion separated from the bag member when the opening is formed, and the portion on the other side of the knob portion in the pulling direction, the seal member and the bag member. A second adhesive area having a weaker adhesive force per unit area than the first adhesive area,
An absorbent article package characterized by the following. The absorbent article package according to claim 1, wherein
The absorbent article packaging body, wherein the second adhesive region is provided in a region on the one side of an end of the opening defining portion on the one side in the pulling direction. The absorbent article package according to claim 1, wherein
The absorbent article packaging body, wherein the second adhesive region is provided in a region on the other side of the one end of the opening defining portion in the pulling direction. The absorbent article package according to any one of claims 1 to 3,
The absorbent article packaging body, wherein in the knob portion, an adhesive force per unit area between the seal member and the bag member is weaker than that in the second adhesive region. The absorbent article package according to any one of claims 1 to 4,
At least a part of the second adhesive region extends in the pulling direction between a part of the sealing member that is not separated from the bag member when the opening is formed and a part that is separated from the bag member. An absorbent article package characterized by the following. The absorbent article package according to claim 5, wherein
Has a left-right direction that intersects the pulling direction,
The opening defining portion has a curved portion that is convex on the one side in the pulling direction,
The length in the pulling direction of the portion of the sealing member that does not separate from the bag member when the opening is formed and the second adhesive region is the longest in the center in the left-right direction. An absorbent article package characterized by the following. The absorbent article package according to claim 6, wherein:
The absorbent article package, wherein the curved portion has a constant curvature from the center in the left-right direction to both ends. The absorbent article package according to any one of claims 1 to 7, wherein
Has a left-right direction that intersects the pulling direction,
The said opening regulation part has a linear part along the said pulling direction on both sides of the said left-right direction, The absorbent article package body characterized by the above-mentioned. The absorbent article package according to claim 8, wherein:
An absorbent article package, wherein the straight line portion is provided in a portion which is an upper surface of the absorbent article package. The absorbent article package according to any one of claims 1 to 9, wherein:
Of the sealing member, in the pulling direction, the adhesive force per unit area in the region on the other side from the end on the other side of the opening defining portion is the same as the adhesive force of the first adhesive region, An absorbent article package characterized by the following. The absorbent article package according to any one of claims 1 to 10, wherein
Has a left-right direction that intersects the pulling direction,
Curvatures at both end portions of the seal member in the left-right direction and at an edge of an upstream side portion in the pulling direction are:
An absorbent article packaging body, which is larger than a curvature at an end edge of the knob portion. The absorbent article package according to any one of claims 1 to 11, wherein:
The second adhesive region has an adhesive agent provided on one side in the thickness direction of the seal member, and an adhesive force reducing material provided on the one side in the thickness direction with respect to the adhesive agent, An absorbent article package characterized by the following. The absorbent article package according to any one of claims 1 to 12, wherein
The rigidity of the said sealing member is 0.30 mN or more and 1.70 mN or less when measured based on the Gurley method prescribed | regulated to JIS L1096: 2010, The absorbent article packaged body characterized by the above-mentioned.

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