WO2018163867A1 - Absorbent article packaging body - Google Patents

Abstract

In this absorbent article packaging body (1), an absorbent article (10) and a packaging sheet (20) are layered in the thickness direction. The packaging sheet (20) is a non-woven fabric having a predetermined density and a predetermined thickness, and has a first edge part (20rf) including an end (20ef) on one side in the longitudinal direction, and a second edge part (20rb) including an end (20eb) on the other side. In a folded state, a base end side of a lead tape (50) is fixed to the surface of the first edge part (20rf), and a free end side of the lead tape (50) is detachably adhered to the surface of the packaging sheet (20). In the first edge part (20rf), a region extending a predetermined width from the end (20ef) on the one side in the lengthwise direction in a part in which the first edge part (20rf) extends over the base end side of the lead tape (50) has a higher density than the predetermined density and is thinner than the predetermined thickness.

Description

Absorbent packaging

The present invention relates to an absorbent article package.

[0003] Absorbent article packages in which absorbent articles such as sanitary napkins and incontinence pads are folded and individually wrapped with a packaging sheet are known. In such an absorbent article packaging body, a lead tape for pinching and pulling with a finger may be provided on the packaging sheet when unfolding from a state folded in the longitudinal direction. For example, Patent Document 1 discloses an absorbent article packaging body in which an edge portion on one side in the longitudinal direction of a packaging sheet is folded on the surface of the packaging sheet and a lead tape is provided so as to straddle the edge portion. A technique is disclosed in which a lead tape can be fixed (bonded) to the end edge portion with strong strength by partially smoothing the end edge portion.

Patent No. 4426163

The problem to be solved by the present invention is at least one of the following first problem and second problem.
The first problem is that, in Patent Document 1, when the lead tape is pulled in the longitudinal direction when the absorbent article package is developed, the position of the “end” in the longitudinal direction of the packaging sheet is the position where the strongest force acts. The packaging sheet is not smoothed. In this case, the “end” of the packaging sheet becomes the base point from which the base end of the lead tape (that is, the joint) is peeled off, and the entire fixing portion of the lead tape is peeled off from the edge of the packaging sheet as it is, and only the lead tape is removed from the packaging sheet. There is a risk of losing.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article packaging body in which the joint portion of the lead tape does not easily come off when deployed. .

The second problem is that in the absorbent article package provided with the lead tape, the free end portion of the lead tape that protrudes outward from the edge of the packaging sheet is pasted to the packaging sheet in a peelable manner. When using the absorbent article, the free end of the lead tape (that is, the lead tape knob) is peeled off from the packaging sheet, and the peeled free end is picked up with a finger and pulled individually. The body is opened. However, when the packaging sheet is formed of a nonwoven fabric as in Patent Document 1, the fibers on the nonwoven fabric surface may be peeled off when the attached lead tape is peeled off. In this case, there is a possibility that the packaging sheet is torn when the fibers are largely peeled off, or the adhesiveness is lost by the peeled fibers adhering to the adhesive portion of the lead tape.

The present invention has been made in view of the above-described problems, and an object of the present invention is to pick a lead tape affixed to a packaging sheet in an absorbent article packaging body having a nonwoven packaging sheet. It is in suppressing that the fiber of a nonwoven fabric will be stripped when peeling a part.

A main invention for achieving the first object includes a longitudinal direction, a lateral direction, and a thickness direction intersecting each other, and an absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction. And the absorbent article and the packaging sheet are stacked in the thickness direction, and the packaging sheet is a non-woven fabric having a predetermined density and a predetermined thickness. The absorbent article and the packaging sheet have a first end edge portion including an end on one side in the longitudinal direction in a developed state, and a second end edge portion including an end on the other side in the longitudinal direction. In the folded state, the first end edge portion is disposed on the outer side in the thickness direction than the second end edge portion, and the base end side of the lead tape is on the surface of the first end edge portion. Fixed in the longitudinal direction from the first end edge A free end side of the lead tape protruding outward is detachably attached to the surface of the packaging sheet, and the first edge portion overlaps with the base end side of the lead tape in the thickness direction. A region having a predetermined width at least from the one end in the longitudinal direction, and having a density higher than the predetermined density and a thickness smaller than the predetermined thickness. It is the absorbent article packaging body characterized.

A main invention for achieving the second object described above comprises an absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction, each having a longitudinal direction, a lateral direction, and a thickness direction intersecting each other. And the absorbent article and the packaging sheet are stacked in the thickness direction, and the packaging sheet is a non-woven fabric having a predetermined density and a predetermined thickness. The absorbent article and the packaging sheet have a first end edge portion including an end on one side in the longitudinal direction in a developed state, and a second end edge portion including an end on the other side in the longitudinal direction. In the folded state, the first end edge portion is disposed on the outer side in the thickness direction than the second end edge portion, and the base end side of the lead tape is on the surface of the first end edge portion. Fixed in the longitudinal direction than the first edge portion. A free end side of the lead tape protruding to the side is releasably attached to the surface of the packaging sheet, and the packaging sheet has the predetermined tape in at least a part of the region where the free end side of the lead tape is attached. The absorbent article packaging body is characterized in that the density is higher than the density and the thickness is thinner than the predetermined thickness.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

The effect of the present invention with respect to the first problem can provide an absorbent article package in which the joint portion of the lead tape is difficult to come off when deployed.

The effect of the present invention with respect to the second problem is that, in the absorbent article packaging body having a nonwoven fabric-made packaging sheet, the fibers of the nonwoven fabric are peeled off when the lead tape tab attached to the packaging sheet is peeled off. Can be suppressed.

It is a schematic perspective view of the napkin 1 of the folded individual packaging state. It is a schematic plan view when the napkin 1 of the expand | deployed state is seen from the skin side. It is a schematic plan view when the napkin 1 of the expand | deployed state is seen from the non-skin side. FIG. 3 is a schematic sectional view showing a section AA in FIG. 2. It is a schematic top view of the napkin 1 of the individual packaging state folded. FIG. 6 is a schematic cross-sectional view showing a BB cross section of FIG. 5. Drawing 7A is a figure explaining operation at the time of opening absorptive article packing object 100 which does not have a high-density part in a packing sheet. FIG. 7B is a diagram illustrating an operation when opening the napkin 1 in an individually packaged state. It is the schematic perspective view showing the operation | movement which pulls the lead tape 50 when opening the napkin 1 of the individual packaging state. It is a schematic top view of the napkin 1 of the individual packaging state folded. FIG. 10A is a diagram illustrating an operation when opening the absorbent article package 100 that does not have a high-density portion in the packaging sheet. FIG. 10B is a diagram illustrating an operation when opening the napkin 1 in the individually packaged state. It is a figure explaining an example of the reuse method of the packaging sheet. It is a schematic plan view for explaining the arrangement of the packaging sheet joining portion 132. It is a schematic plan view when the napkin 2 in the developed state is viewed from the skin side. It is a schematic plan view showing the state which folded the napkin 2 of the unfolded state to the vertical direction in the 1st crease | fold F1. FIG. 15 is a schematic cross-sectional view showing a CC cross section of FIG. 14.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
A longitudinal direction, a lateral direction, and a thickness direction intersecting each other, and having an absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction, the absorbent article and the packaging sheet, Is an absorbent article packaging body stacked in the thickness direction, wherein the packaging sheet is a nonwoven fabric having a predetermined density and a predetermined thickness, and includes an end on one side in the longitudinal direction in a developed state. A first end edge portion and a second end edge portion including an end on the other side in the longitudinal direction, and in a state where the absorbent article and the packaging sheet are folded, the first end edge portion is The lead tape is disposed on the outer side in the thickness direction than the second end edge, and the base end side of the lead tape is fixed to the surface of the first end edge, and in the longitudinal direction, the first end The free end side of the lead tape protruding outward from the edge portion, The first end edge portion is attached to the surface of the packaging sheet so as to be peelable, and at least one of the first end edge portion in the longitudinal direction of the portion overlapping the base end side of the lead tape in the thickness direction An absorbent article packaging body characterized in that in a region having a predetermined width from the end on the side, the density is higher than the predetermined density and thinner than the predetermined thickness.

According to such an absorbent article packaging body, the fibers in the overlapping area in the thickness direction with the base end portion of the lead tape in the packaging sheet are pressed together, and the nonwoven fabric surface is in a smooth state. Bond strength at the base end of the tape is increased. In particular, since the bonding strength of the lead tape base end portion becomes strong at the longitudinal end portion of the packaging sheet where a large force acts when the lead tape is pulled, the lead tape is difficult to come off from the packaging sheet.

In such an absorbent article packaging body, the first end edge portion has a density higher than the predetermined density in the entire portion overlapping the base end side of the lead tape in the thickness direction, It is desirable that the thickness is smaller than the predetermined thickness.

According to such an absorbent article package, the bonding strength of the lead tape base end portion becomes strong in the entire region of the packaging sheet overlapping with the base end portion of the lead tape in the thickness direction. Therefore, it becomes easier to suppress the lead tape from being detached from the packaging sheet.

In such an absorbent article package, the packaging sheet has a density higher than the predetermined density in a region having a predetermined width outward from both lateral ends of the portion overlapping the lead tape, It is desirable that the thickness is smaller than the predetermined thickness.

According to such an absorbent article packaging body, the lead tape is hardly detached even when a force for peeling the lead tape from the packaging sheet is applied at both lateral ends of the lead tape base end. Further, when the lead tape is joined to the packaging sheet at the time of manufacture, even if the joining position is shifted in the lateral direction, the base end portion of the lead tape can be arranged in the high density portion (high strength portion) of the packaging sheet. Therefore, it can suppress that the joint strength of a lead tape becomes weak.

In such an absorbent article package, the width in the horizontal direction of the region of the packaging sheet that is higher in density than the predetermined density and thinner than the predetermined thickness is the vertical direction. It is desirable that the end on the one side is wider than the end on the other side in the longitudinal direction.

According to such an absorbent article packaging body, when the lead tape is pulled, the greatest force is likely to act at the intersection of one end in the longitudinal direction of the packaging sheet and both ends in the lateral direction of the lead tape. . Then, it can make it easy to suppress that the fiber of a nonwoven fabric peels off or a nonwoven fabric is torn by forming a high-density part (high-strength part) widely in the one side of the vertical direction of a packaging sheet.

In such an absorbent article packaging body, an end adhesion region that joins the first edge to the packaging sheet is provided along the lateral direction, and in the longitudinal direction, the end adhesion region is It is desirable that the density is higher than the predetermined density and overlaps with a region where the thickness is thinner than the predetermined thickness.

According to such an absorbent article packaging body, the adhesive forming the end adhesive region permeates the high density portion of the nonwoven fabric and oozes out to the upper side (the front side of the product) of the nonwoven fabric in the thickness direction. Can be suppressed. Therefore, stickiness of the surface of the absorbent article package by the adhesive is suppressed.

The absorbent article packaging body, wherein a density is higher than the predetermined density in the central portion in the lateral direction, and a central high-density portion that is a region where the thickness is thinner than the predetermined thickness; and the center A high-density portion on both sides in the lateral direction of the high-density portion having a density higher than the predetermined density and a thickness smaller than the predetermined thickness, and the first end In the edge portion, it is desirable that the central high-density portion and the high-density portions on both sides are arranged side by side with a predetermined interval in the lateral direction.

According to such an absorbent article packaging body, in the region between the central high-density portion and the high-density portions on both sides, the fibers of the nonwoven fabric constituting the packaging sheet are likely to be stretched. Is distributed, it is suppressed that force concentrates on both ends of the lead tape in the lateral direction. Thereby, adhesion of the lead tape base end portion is hardly peeled off at both ends in the lateral direction, and it is easier to suppress the lead tape from being detached from the packaging sheet.

In such an absorbent article package, the both sides in the lateral direction have a seal region that joins the packaging sheets stacked in the thickness direction, and at least part of the high-density parts on both sides is It is desirable to overlap with the sealing area.

According to such an absorbent article packaging body, the strength of the nonwoven fabric is increased in the region where the high density portions on both sides are formed. Therefore, when the seal region is peeled off when the absorbent article is opened, the nonwoven fabric is formed in the seal region. It becomes easy to suppress that it breaks.

In such an absorbent article package, it is desirable that the area of the central high-density part is larger than the area of each of the high-density parts on both sides.

According to such an absorbent article packaging body, the strength of the nonwoven fabric is increased in the region where the high density portions on both sides are formed. Therefore, when the seal region is peeled off when the absorbent article is opened, the nonwoven fabric is formed in the seal region. It becomes easy to suppress that it breaks

In such an absorbent article packaging body, the sum of the areas of the first edge portion where the density is higher than the predetermined density and thinner than the predetermined thickness is the predetermined edge. And the sum of the area of the region having the predetermined thickness is desirable.

According to such an absorbent article packaging body, problems such as bleeding of the adhesive and breakage of the nonwoven fabric occur at the first edge by increasing the ratio of the high density area at the first edge. It becomes easy to suppress.

In such an absorbent article package, the absorbent article has wing portions on both sides in the lateral direction, and the packaging sheet is higher in density than the predetermined density and thicker than the predetermined thickness. In the state in which the absorbent article and the packaging sheet are folded, having a high density region in which a plurality of high density portions, which are thin portions, are arranged along the lateral direction at the second end edge portion A wing separator is provided between the wing portion and the packaging sheet, and the wing separator is joined to the packaging sheet by a wing separator joint portion, and the wing separator joint portion in the longitudinal direction. Preferably overlaps the high density region.

According to such an absorbent article packaging body, the bonding strength of the wing separator joint for joining the wing separator and the packaging sheet is increased, and the wing separator is detached from the packaging sheet when the absorbent article packaging body is opened. Is suppressed. Moreover, it becomes difficult for the adhesive forming the wing separator to ooze out to the opposite side of the thickness direction of the packaging sheet (nonwoven fabric), and the surface of the packaging sheet can be prevented from becoming sticky.

In addition, the absorbent article and the packaging are provided with an absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction. The absorbent article packaging body in which the sheet is stacked in the thickness direction, wherein the packaging sheet is a nonwoven fabric having a predetermined density and a predetermined thickness, and is one end in the longitudinal direction in a developed state In the state where the absorbent article and the packaging sheet are folded, the first end edge portion has a first end edge portion including the second end edge portion including the other end in the longitudinal direction. Is disposed on the outer side in the thickness direction than the second end edge portion, and the base end side of the lead tape is fixed to the surface of the first end edge portion. Freeness of the lead tape protruding outward from one edge The packaging sheet is releasably affixed to the surface of the packaging sheet, and the packaging sheet has a density higher than the predetermined density in at least a part of the region where the free end side of the lead tape is affixed, The absorbent article packaging is characterized by being thinner than the thickness of the absorbent article.

According to such an absorbent article packaging body, the fibers in the overlapping area in the thickness direction with the free end of the lead tape in the packaging sheet are pressed together, and the nonwoven fabric surface is in a smooth state. When the free end of the tape is peeled off, it is difficult for fibers to fall out or to break the nonwoven fabric on the surface of the packaging sheet. Moreover, since it is suppressed that the peeled fiber adheres to the adhesive layer of a lead tape, the adhesiveness of an adhesive layer becomes easy to be maintained.

In such an absorbent article packaging body, the packaging sheet has a density higher than the predetermined density, and a high density portion that is a portion where the thickness is thinner than the predetermined thickness, along the lateral direction. It is preferable that a plurality of high-density regions arranged side by side and a region to which the free end side of the lead tape is attached overlap the high-density region in the longitudinal direction.

According to such an absorbent article packaging body, when the absorbent article is folded into an individual packaging state, even if the position where the free end of the lead tape is attached is shifted in the lateral direction, the free end Becomes easy to be disposed overlapping the high-density portion. Thereby, in the operation | movement which peels a lead tape, it becomes easier to suppress that a packaging sheet is torn or the adhesiveness of a lead tape is impaired.

In such an absorbent article package, an end adhesion region that joins the one end edge to the packaging sheet is provided along the lateral direction, and in the longitudinal direction, the end adhesion region is It is desirable to overlap with the high density region.

According to such an absorbent article packaging body, it is possible to make it difficult for fibers to fall out of the packaging sheet and to break the nonwoven fabric when the end adhesion region is peeled off when the absorbent article packaging body is opened. Moreover, it is suppressed that the adhesive agent which forms an edge part adhesion | attachment area | region penetrate | invades a nonwoven fabric, and the problem that an adhesive agent oozes out to the back side of a packaging sheet, and adheres to an absorbent article becomes difficult to arise.

Such an absorbent article package, having a separator between the absorbent article and the packaging sheet, the separator is joined to the packaging sheet by a packaging sheet joining portion, in the longitudinal direction, It is desirable that the packaging sheet joint portion overlaps the high density region.

According to such an absorbent article package, the bonding strength between the packaging sheet and the separator can be increased at the portion where the packaging sheet bonding portion and the high-density region overlap. Thereby, when a lead tape is pulled, only a packaging sheet peels from a separator and it can make it difficult to produce the problem that a separator remains on the absorptive article side. Moreover, it can suppress that the adhesive agent which forms the packaging sheet junction part oozes out on the surface on the opposite side of a packaging sheet.

In such an absorbent article package, a first crease serving as a folding base point when the second end edge of the packaging sheet is folded inward from the outside in the longitudinal direction is provided along the lateral direction. In the longitudinal direction, it is desirable that the first fold line overlaps the high-density region.

According to such an absorbent article packaging body, since the nonwoven fabric is thin in the region overlapping with the first fold line in the longitudinal direction, the nonwoven fabric can be easily folded, and the once folded nonwoven fabric has the original shape. Hard to return. Therefore, when the absorbent article is folded, the packaging sheet is easily bent at the first fold, and the individual packaging state can be easily maintained.

In such an absorbent article packaging body, the first end edge portion is at least from the end on the one side in the longitudinal direction among the portions overlapping with the base end side of the lead tape in the thickness direction. In a region having a predetermined width, it is desirable that the density is higher than the predetermined density and the thickness is thinner than the predetermined thickness.

According to such an absorbent article packaging body, the fibers in the overlapping area in the thickness direction with the base end portion of the lead tape in the packaging sheet are pressed together, and the nonwoven fabric surface is in a smooth state. Bond strength at the base end of the tape is increased. In particular, since the bonding strength of the lead tape base end portion becomes strong at the longitudinal end portion of the packaging sheet where a large force acts when the lead tape is pulled, the lead tape is difficult to come off from the packaging sheet.

In such an absorbent article package, the packaging sheet has a density higher than the predetermined density in a region having a predetermined width outward from both lateral ends of the portion overlapping the lead tape, It is desirable that the thickness is smaller than the predetermined thickness.

According to such an absorbent article packaging body, the lead tape is hardly detached even when a force for peeling the lead tape from the packaging sheet is applied at both lateral ends of the lead tape base end. Further, when the lead tape is joined to the packaging sheet at the time of manufacture, even if the joining position is shifted in the lateral direction, the base end portion of the lead tape can be arranged in the high density portion (high strength portion) of the packaging sheet. Therefore, it can suppress that the joint strength of a lead tape becomes weak.

In such an absorbent article package, the absorbent article has wing portions on both sides in the lateral direction, and the packaging sheet is higher in density than the predetermined density and thicker than the predetermined thickness. The absorbent article and the packaging sheet have a second end edge high-density region in which a plurality of high-density parts, which are thin portions, are arranged along the lateral direction. In the folded state, a wing separator is provided between the wing portion and the packaging sheet, and the wing separator is joined to the packaging sheet by a wing body adhesive portion, and in the longitudinal direction, It is preferable that the wing main body adhesive portion overlaps with the second end edge high density region presence.

According to such an absorbent article packaging body, the bonding strength of the wing separator joint for joining the wing separator and the packaging sheet is increased, and the wing separator is detached from the packaging sheet when the absorbent article packaging body is opened. Is suppressed. Moreover, it becomes difficult for the adhesive forming the wing separator to ooze out to the opposite side of the thickness direction of the packaging sheet (nonwoven fabric), and the surface of the packaging sheet can be prevented from becoming sticky.

=== First Embodiment ===
<Configuration of absorbent article packaging>
As an example of the absorbent article package (individual package) according to the first embodiment, a sanitary napkin 1 (hereinafter also simply referred to as a napkin 1) will be described. In the following, the napkin 1 will be described, but the absorbent article package of the present embodiment includes so-called cage sheets (for example, panty liners), incontinence pads, and the like, and is limited to sanitary napkins. is not.

FIG. 1 is a schematic perspective view of the napkin 1 in a folded and individually wrapped state. FIG. 2 is a schematic plan view of the unfolded napkin 1 as viewed from the skin side. FIG. 3 is a schematic plan view when the napkin 1 in a developed state is viewed from the non-skin side. 4 is a schematic cross-sectional view showing the AA cross section of FIG.

1 to 4, the napkin 1 according to the present embodiment includes an absorbent article 10, a packaging sheet 20, and a lead tape 50. A separator 30 is provided between the absorbent article 10 and the packaging sheet 20 in the thickness direction.

In the following description, each direction is defined as shown in FIGS. That is, let the direction along the product longitudinal direction of the napkin 1 (absorbent article 10, packaging sheet 20) of the expand | deployed state be a "longitudinal direction." The vertical direction has a “front side” and a “rear side”. The “front side” is a direction that becomes the stomach side of the user when the absorbent article 10 is used, and the “rear side” is a direction that becomes the back side of the user when the absorbent article 10 is used. In addition, a direction orthogonal to the vertical direction, that is, a direction along the product width direction is referred to as a “lateral direction”. The direction perpendicular to the vertical direction and the horizontal direction is the “thickness direction”, and the side that comes into contact with the skin of the user (wearer) when the absorbent article 10 is used (when worn) is the “skin side”. The opposite side is defined as “non-skin side”.

The absorbent article 10 includes an absorbent core 11 that absorbs liquid, a top sheet 12 that covers the absorbent core 11 from the user's skin side, and a back sheet 13 that covers the absorbent core 11 from the user's non-skin side. (See FIG. 2 and FIG. 4).

The absorbent core 11 is a long and long member along the vertical direction, and includes hydrophilic fibers, pulp, and the like, and can efficiently absorb and retain fluids such as body fluids. The absorbent core 11 may be formed by laminating hydrophilic fibers or powders by the airlaid method, or may be an airlaid sheet obtained by forming hydrophilic fibers or powders into a sheet shape by the airlaid method. The top sheet 12 includes a center top sheet 12A stacked on the skin side of the absorbent core 11, and a side top sheet 12B stacked on both lateral sides of the center top sheet 12A. The center top sheet 12A and the side top sheet 12B are both liquid-permeable sheet members that allow liquid such as body fluid to pass through, and are formed of, for example, a nonwoven fabric. However, the material is not particularly limited as long as it is a sheet member having a structure that allows liquid to pass therethrough and is a safe member when contacting the user's skin when the napkin 1 is used. For example, a woven fabric or a mesh sheet may be used. The back sheet 13 is a non-liquid permeable sheet member. For example, a breathable resin film is bonded to a nonwoven fabric such as a film mainly made of polyethylene or propylene, a breathable resin film, spunbond, or spunlace. Formed by a sheet. Since the back sheet 13 is non-liquid permeable, the liquid absorbed through the top sheet 12 (12A, 12B) and absorbed by the absorbent core 11 when the napkin 1 is used is on the clothing side (non-skin side) ) Is suppressed.

The packaging sheet 20 is a sheet member for individually packaging the absorbent article 10. Before using the napkin 1, the packaging sheet 20 is joined to the absorbent article 10 so as to be overlapped in the thickness direction, and is removed from the absorbent article 10 when the napkin 1 is used. In this embodiment, the packaging sheet 20 is a substantially rectangular sheet member having a long side in the longitudinal direction (longitudinal direction), and the absorbent article 10 and the packaging sheet 20 are hot-melt adhesives via a separator 30. It is joined by the main body adhesive portion 131 and the packaging sheet joining portion 132 provided with an adhesive such as (see FIG. 4). In the unfolded packaging sheet 20, a region having a predetermined width including an end 20ef on one side in the longitudinal direction (the front side in the longitudinal direction in FIG. 2) is defined as a first edge portion 20rf, and the other side in the longitudinal direction (see FIG. In FIG. 2, a region having a predetermined width including the end 20eb on the rear side in the vertical direction is defined as a second end edge portion 20rb. Moreover, let the area | region of the predetermined | prescribed width | variety containing the edge 20es of the packaging sheet 20 in the horizontal direction be the side edge part 20rs.

As a material of the packaging sheet 20, a nonwoven fabric, for example, an SMS (spunbond / meltblown / spunbond) nonwoven fabric is used. In the conventional absorbent article package (individual package), a resin or film packaging sheet is often used. On the other hand, in the napkin 1 according to the present embodiment, the use of the non-woven packaging sheet 20 makes it difficult for a zippering sound to occur when opened, and makes it difficult for others to notice when using the napkin 1. Moreover, a soft feeling unique to the nonwoven fabric can give the user (wearer) a sense of security.

The packaging sheet 20 is subjected to a predetermined embossing process in the thickness direction over the entire area of the nonwoven fabric surface. For example, in the state where a spunbond nonwoven fabric or a melt blown nonwoven fabric is laminated, a large number of heat-sealed portions (not shown) that are portions that are pressed and heated in the form of fine dots on the entire surface of the packaging sheet 20 are formed. Thereby, the packaging sheet has a predetermined density ρ20 and a predetermined thickness t20. The density ρ20 is a value calculated by measuring the weight of the packaging sheet 20 cut into a predetermined size (area). The thickness t20 is, for example, a dial thickness gauge ID-C1012C manufactured by Mitutoyo Corporation or equivalent, and the non-woven fabric is set with a contact area of 20 cm ² and a contact pressure of 3 gf / cm ^2. It is the average value of the values measured for a plurality of locations on the surface.

Further, a high density portion 25 is formed in a predetermined region of the packaging sheet 20 by performing a compression process separately from the embossing process described above. In the high density portion 25, the density is higher than the predetermined density ρ20, and the thickness is thinner than the predetermined thickness t20. The compression process for forming the high density portion 25 is performed by applying a known pressure process such as a calendar process or an emboss process to a predetermined region of the packaging sheet 20 (nonwoven fabric). Therefore, in the high density part 25, the fine unevenness | corrugation of the surface reduces and is in a smooth state compared with the area | region in which the high density part 25 is not formed by the fiber of the nonwoven fabric surface being compressed. .

In the packaging sheet 20 of the present embodiment, as shown by the black portions in FIG. 3, the first high-density region 251, the second high-density region 252, the third high-density region 253, and the horizontal direction, respectively. Four high-density regions of the fourth high-density region 254 are arranged in the vertical direction. In FIG. 2, the display of the high-density areas 251 to 254 is omitted for convenience of explanation. Each of the high density regions 251 to 254 is formed by arranging a plurality of high density portions 25 having a predetermined size and shape in the horizontal direction at intervals. Among these, the 1st high density area | region 251 is formed in the position which overlaps with the 1st edge part 20rf of the packaging sheet 20. FIG. Further, in the following description, of the plurality of high density portions 25 forming the first high density region 251, the area provided at a position overlapping the lead tape 50 (base end portion 50 s) at the center in the horizontal direction. The large high density portion 25 is referred to as a central high density portion 251c, and a plurality of high density portions 25 provided on both lateral sides of the central high density portion 251c are referred to as double side high density portions 251s.

A lead tape 50 is provided on the first end edge 20rf (end 20ef) of the packaging sheet 20. The lead tape 50 is formed of, for example, a polypropylene film, and a base end portion 50s that is an end portion on the other side in the longitudinal direction is bonded and fixed to the non-skin side surface of the first end edge portion 20rf. The base end 50s is fixed through an adhesive layer 55 formed of an adhesive such as a hot melt adhesive. On the other hand, the end portion on one side in the longitudinal direction of the lead tape 50 has a free end portion 50f protruding outward in the longitudinal direction (front side in the longitudinal direction) from the first end edge portion 20rf (end 20ef) of the packaging sheet 20. Forming. Details regarding the configuration and functions of the lead tape 50 will be described later.

The separator 30 is a sheet member disposed between the back sheet 13 and the packaging sheet 20 of the absorbent article 10 (see FIG. 4). The skin-side surface of the separator 30 is peeled off using silicon resin or the like, and is attached to the main body adhesive portion 131 provided between the absorbent article 10 so as to be peelable. Since the peeling process is known, a description thereof will be omitted. On the other hand, the non-skin side surface of the separator 30 is fixed (joined) to the packaging sheet by the packaging sheet joining portion 132 provided between the separator 30 and the packaging sheet 20. By arrange | positioning such a separator 30, the adhesive agent which forms the main body adhesion part 131 adheres to the packaging sheet 20 before use of the absorbent article 10, and the adhesiveness of the main body adhesion part 131 becomes weak. Is suppressed and the main body adhesive portion 131 is protected. When the absorbent article 10 is used, the separator 30 is peeled off from the main body adhesive portion 131 together with the packaging sheet 20, and the absorbent article 10 is fixed to the user's underwear or the like by the adhesive force of the main body adhesive portion 131. The

In this embodiment, the napkin 1 in an individually packaged state is folded in the vertical direction by a plurality of folds along the horizontal direction. Specifically, the napkin 1 is folded by the two folds F1 and F2 so as to be folded in three in the vertical direction. The first fold line F1 is disposed behind the center position in the longitudinal direction of the napkin 1, and the second fold line F2 is disposed in front of the center position in the longitudinal direction of the napkin 1 (FIG. 1, see FIG.

<About individual packaging of napkin 1>
Next, the individual packaging state of the napkin 1 will be described. FIG. 5 is a schematic plan view of the napkin 1 in a folded and individually wrapped state. FIG. 6 is a schematic cross-sectional view showing the BB cross section of FIG. In FIG. 6, the separator 30 is not shown for convenience of explanation.

As described above, the napkin 1 is folded at the two folds F1 and F2 so that the absorbent article 10 is wrapped individually by the packaging sheet 20. When the napkin 1 is folded, first, the packaging sheet 20 and the absorbent article 10 (and the separator 30) are folded in the vertical direction so that the skin-side surface of the absorbent article 10 is inside with the first fold F1 as a base point. It is done. That is, the second end edge 20rb (end 20eb) of the packaging sheet 20 is folded back from the outside in the longitudinal direction (longitudinal direction) to the inside with the first fold line F1 as a base point. Subsequently, the packaging sheet 20 and the absorbent article 10 (and the separator 30) are folded in the vertical direction with the second fold line F2 as a base point. That is, the first end edge 20rf (end 20ef) of the packaging sheet 20 is folded back from the outside in the vertical direction (longitudinal direction) to the inside as the second fold F2 base point. Thereby, in the napkin 1, the 1st edge part 20rf of the packaging sheet 20 will be in the state arrange | positioned in the thickness direction outer side (upper side in FIG. 6) rather than the 2nd edge part 20rb.

In the region where the first edge 20rf of the packaging sheet 20 is overlapped with the packaging sheet 20 in the thickness direction, an end adhesion region 27 as shown in FIGS. 5 and 6 is formed. The end adhesive region 27 is formed by applying an adhesive in a strip shape along the lateral direction between the side end portions 20rs, 20rs on both lateral sides of the packaging sheet 20, as shown in FIG. The lower surface of the end edge portion 20rf and the upper surface of the packaging sheet 20 overlapping the first end edge portion 20rf are joined. By this end portion adhesion region 27, the packaging sheets 20 stacked in the thickness direction at the first end edge portion 20rf are bonded to each other, and it is suppressed that the folded state is unfolded before the use of the napkin 1 is started. . That is, it is suppressed that the napkin 1 in the individually packaged state is naturally opened.

Further, at the side end portions 20rs on both sides in the lateral direction of the packaging sheet 20, seal regions 29 are formed to join (seal) the packaging sheets 20 stacked in the thickness direction along the longitudinal direction. The seal area 29 is formed using a known sealing means such as ultrasonic welding or heat welding. Thereby, the folded packaging sheets 20 are joined at the side end portions 20rs on both sides in the lateral direction, and the napkin 1 is easily maintained in the individually wrapped state as shown in FIGS.

The free end portion 50f of the lead tape 50 that protrudes outward in the vertical direction from the first end edge portion 20rf of the packaging sheet 20 with respect to the napkin 1 that is folded in this way into an individually packaged state is an adhesive layer 55. It is affixed on the surface of the packaging sheet 20 via. That is, the lead tape 50 is disposed so as to straddle the end 20ef of the packaging sheet 20 (see FIG. 6). The free end 50f of the lead tape 50 is detachably attached to the surface of the packaging sheet 20, and can be easily removed from the surface of the packaging sheet 20 when the napkin 1 is used. On the other hand, the base end portion 50s of the lead tape 50 is pressure-bonded to the packaging sheet 20 and has high bonding strength, and therefore is less likely to peel from the surface of the packaging sheet 20 than the free end portion 50f.

When the absorbent article 10 is used, the napkin 1 folded at the first fold line F1 and the second fold line F2 is unfolded as shown in FIG. 2, and the packaging sheet 20 and the separator 30 are detached from the absorbent article 10. Is done. When unpacking the napkin 1 from the individually packaged state, the free end 50f of the lead tape 50 is pinched by a finger of a user or the like and pulled from the inside in the thickness direction to the outside and from one side in the vertical direction to the other side. It is done. By this operation, first, the free end 50 f of the lead tape 50 is peeled off from the surface of the packaging sheet 20. Subsequently, when the first end edge portion 20rf of the packaging sheet 20 is pulled through the lead tape 50, the end adhesion region 27 that has joined the first end edge portion 20rf is peeled off, and the napkin 1 is opened. The

FIG. 7A is a diagram for explaining an operation when opening the absorbent article package 100 that does not have a high-density portion in the packaging sheet as a comparative example. FIG. 7B is a diagram illustrating an operation when the napkin 1 in an individually packaged state is opened in the present embodiment. 7A and 7B are both schematic cross-sectional views when the operation of pulling the lead tape is seen from the lateral direction in the absorbent article packaging body having a nonwoven fabric packaging sheet.

As described above, when opening the absorbent article packaging body, by pulling the free end side of the lead tape from the inside in the thickness direction to the outside and from one side in the longitudinal direction to the other side, The operation | movement which peels off the packaging sheets currently piled up is performed. When such an operation is performed, in the conventional absorbent article packaging body 100 shown in FIG. 7A, when the free end portion 150f of the lead tape 150 is strongly pulled, the lead tape is formed at the longitudinal end 120ef of the packaging sheet 120. There is a possibility that the adhesive layer 155 that has bonded and fixed the base end portion 150 s of the 150 is peeled off from the packaging sheet 120 and the lead tape 150 is detached from the packaging sheet 120.

And when the packaging sheet 120 is formed of a nonwoven fabric, the surface of the nonwoven fabric has fine irregularities formed by a plurality of intricately intertwined fibers, and the surface is rough when viewed microscopically. is there. When the adhesive layer 155 is provided on such a surface, the area (contact area) of the contact portion between the adhesive forming the adhesive layer 155 and the nonwoven fabric surface is reduced, and the adhesive (adhesive layer 155) is the surface of the nonwoven fabric. It will not be sufficiently fixed to the surface and will be easily peeled off. As a result, the so-called “fiber loss” in which the fibers on the surface of the packaging sheet 120 (nonwoven fabric) are peeled off together with the adhesive layer 155, or the nonwoven fabric itself is torn, whereby the lead tape 150 is easily detached.

In addition, like patent document 1 mentioned above, it can make it hard to produce generation | occurrence | production of a fiber omission in the said area | region by performing the smoothing process to the one part area | region of the packaging sheet 120. FIG. However, conventionally, there is no example in which the smoothing process is performed up to the end 120ef in the longitudinal direction of the packaging sheet 120. Accordingly, peeling of the adhesive layer 155 is likely to occur at the end 120ef where the greatest force acts when pulling the lead tape 150, and the peeling propagates along the longitudinal direction of the packaging sheet 120, so that in FIG. As described above, the lead tape 150 is easily detached from the packaging sheet 120.

On the other hand, in the napkin 1 of this embodiment, the high density part 25 (center high density part 251c) is formed in the whole area | region which overlaps with the base end part 50s of the lead tape 50 in the thickness direction among the packaging sheets 20. FIG. Has been. In the high-density part 25, the fibers are pressed by applying a compression treatment to the surface of the packaging sheet 20, the fine irregularities on the surface of the nonwoven fabric are reduced, and the surface is in a smooth state. Therefore, by providing the adhesive layer 55 at a position overlapping with the high density portion 25, the area (contact area) where the adhesive is in contact with the nonwoven fabric surface is increased, and the adhesive force by the adhesive layer 55 is sufficiently increased. Can be strong. Moreover, since the strength of the high density portion 25 itself is high, even when a force is applied in a direction in which the base end portion 50 s of the lead tape 50 is peeled off, the nonwoven fabric is not easily broken and the fiber is not easily pulled out.

In particular, in the napkin 1 of the present embodiment, unlike the conventional absorbent article package, the high-density portion 25 (central high-density portion 251c) of the packaging sheet 20 up to the longitudinal end 20ef of the first end edge portion 20rf. Is formed. In other words, the first end edge portion 20rf of the packaging sheet 20 is a portion having a predetermined width from the end 20ef in the longitudinal direction, in a portion overlapping the base end portion 50s of the lead tape 50 in the thickness direction. The density is higher than the predetermined density ρ20, and the thickness is thinner than the predetermined thickness t20. Therefore, as shown in FIG. 7B, it is difficult for the adhesive layer 55 to be peeled off at the end 20 ef where the greatest force acts when the lead tape 50 is pulled, and it is effective that the lead tape 50 is detached from the packaging sheet 20. Can be suppressed.

Moreover, the high density part 25 (center high density part 251c) formed in the 1st edge part 20rf of the packaging sheet 20 is horizontal direction rather than the base end part 50s of the lead tape 50, as FIG. 5 shows. It is the area | region which has a large area on both sides. In other words, the packaging sheet 20 has a density higher than the predetermined density ρ20 and higher than the predetermined thickness t20 in a region having a predetermined width outward from both ends of the region overlapping the lead tape 50 in the lateral direction. The thickness is thin. Therefore, even when the position where the base end portion 50s of the lead tape 50 is joined and fixed to the packaging sheet 20 is slightly shifted in the lateral direction when the napkin 1 is manufactured, the adhesive layer 55 of the base end portion 50s overlaps with the high density portion 25. Since it can arrange | position in the done position, it can suppress that the joint strength of the lead tape 50 becomes weak.

When the lead tape 50 is pulled when opening the napkin 1 in the individually packaged state, it acts in the lateral direction on the packaging sheet 20 in addition to the force acting in the longitudinal direction (and the thickness direction) described in FIG. Power also needs to be considered. FIG. 8 is a schematic perspective view illustrating an operation of pulling the lead tape 50 when the napkin 1 in an individually packaged state is opened. In the napkin 1 of the present embodiment, the lead tape 50 is fixed at a substantially central position in the lateral direction of the first end edge portion 20rf (end 20ef) of the packaging sheet 20. Therefore, when the free end 50f of the lead tape 50 is pulled during the opening operation of the napkin 1, first, the lateral center of the end 20ef of the packaging sheet 20 is first pulled, and then the end of the packaging sheet 20 as shown in FIG. A tensile force is transmitted to both sides of 20 ef in the lateral direction. Therefore, when the lead tape 50 is pulled, a large force is applied to the packaging sheet 20 at the end point 50se, which is a point where both ends of the base end portion 50s of the lead tape 50 and the end 20ef of the packaging sheet 20 intersect in the lateral direction. Works.

Accordingly, in the packaging sheet 20, the width W251f in the horizontal direction at one end in the vertical direction (that is, the end 20ef) of the central high-density portion 251c overlapping the base end portion 50s of the lead tape 50 is the other in the vertical direction. It is made longer than the lateral width W251b at the end on the side (see FIG. 5). As described above, the high density portion 25 (central high density portion 251c) has a higher density than the predetermined density ρ20, and the strength of the nonwoven fabric is high. Accordingly, in the central high-density portion 251c, at the end 20ef on one side in the vertical direction, by increasing the width W251f and providing a wide region with high strength (that is, the high-density portion 25), the lateral direction at the end point 50se. Even when a large force acts on the non-woven fabric, it is easy to suppress that the fibers of the non-woven fabric are peeled off or the non-woven fabric is torn.

The width W251b of the central high-density portion 251c that has the narrowest width in the horizontal direction is wider on both sides in the horizontal direction than the base end portion 50s of the lead tape 50 as described above. Therefore, since the adhesive layer 55 of the base end portion 50s is disposed so as to overlap with the central high-density portion 251c in the entire region in the lateral direction, even when a force acts in the lateral direction, Peeling hardly occurs and the possibility that the lead tape 50 is detached from the packaging sheet 20 is low.

In the individually packaged napkin 1, as shown in FIG. 6, the adhesive layer 55 of the lead tape 50 and the end adhesive region 27 of the packaging sheet 20 overlap in the vertical direction (and the horizontal direction). Is arranged. That is, the adhesive layer 55 and the end portion adhesive region 27 are disposed so as to overlap each other with the first end edge portion 20rf of the packaging sheet 20 interposed therebetween. In such a case, if the high density portion 25 (central high density portion 251c) is not formed on the first edge portion 20rf, the adhesive forming the adhesive layer 55 and the end portion adhesive region 27 is a non-woven fabric. There is a risk that it will ooze out to the opposite side of the thickness direction. On the other hand, in the napkin 1, both the adhesive layer 55 and the end adhesive region 27 are disposed so as to overlap the high density portion 25 (central high density portion 251c) having a high fiber density. Therefore, in the high density portion 25, the movement and the seepage of the adhesive in the thickness direction of the nonwoven fabric are suppressed.

Moreover, the edge part adhesion area | region 27 of the packaging sheet 20 is arrange | positioned in the position which overlaps with the 1st high density area | region 251 formed along the horizontal direction in the vertical direction. That is, the adhesive that forms the end adhesive region 27 is applied to the packaging sheet 20 in a range overlapping with the first high-density region 251. Thereby, it is suppressed that the adhesive which forms the edge part adhesion area | region 27 covering the whole region of the 1st high density area | region 251 oozes out to the upper side (surface side of a product) of the thickness direction of a nonwoven fabric. That is, in the first end edge portion 20rf of the packaging sheet 20, not only the central portion (central high density portion 251c) in the lateral direction but also the regions on both sides thereof are prevented from seeping out the adhesive, and the napkin in an individually packaged state It can suppress that the outer surface of 1 (packaging sheet 20) is sticky.

Further, as shown in FIG. 5, the first high-density region 251 is formed by a central high-density portion 251c provided at the center in the horizontal direction and a plurality of double-sided high-density portions 251s provided on both sides thereof. Predetermined gaps are provided between the central high-density part 251c and both-side high-density parts 251s, or between the high-density parts 251s and 251s on both sides. That is, in the first high-density region 251, a portion having a predetermined density ρ20 and a predetermined thickness t20 (a portion where the high-density portion 25 is not formed) and a density higher than the predetermined density ρ20 and a predetermined thickness. A portion (high density portion 25) having a thickness smaller than t20 is arranged adjacent to each other in the lateral direction. That is, in the first edge portion 20rf of the packaging sheet 20, a portion where the fiber is easily stretched (portion where the high density portion 25 is not formed) and a portion where the fiber is difficult to stretch (the high density portion 25) are arranged adjacent to each other. Will be. With such a configuration, it is possible to facilitate the operation of opening the napkin 1 in the individually packaged state.

For example, when the lead tape 50 is pulled as shown in FIG. 8, the pulling force of the lead tape 50 is transmitted to both sides in the lateral direction along the first edge 20 rf (end 20 ef) of the packaging sheet 20. At this time, if the high-density portion 25 is formed on the entire first end edge portion 20rf, the force that pulls the lead tape 50 strikes the end points 50se at both lateral ends of the lead tape 50 (base end portion 50s). The adhesive layer 55 may be easily peeled off at the end point 50se by acting like a force. On the other hand, in this embodiment, since the portion where the fiber is easy to extend is provided at the position in the lateral direction of the first end edge portion 20rf, the force is distributed in order to stretch the fiber in the portion where the fiber is easily extended. Act. Therefore, it is difficult for the force to concentrate on the end points 50se at both ends in the lateral direction of the lead tape 50 (base end portion 50s), and it is easier to suppress the lead tape 50 from being detached from the packaging sheet 20.

Note that, in the first edge portion 20rf, when the proportion of the portion where the high density portion 25 is formed is smaller than the proportion of the portion where the high density portion 25 is not formed, that is, the high density portion 25 is formed. When the area of the portion is relatively small, there is a possibility that the problems such as the bleeding of the adhesive and the breaking of the nonwoven fabric as described above may not be sufficiently suppressed. On the other hand, in the packaging sheet 20 of the present embodiment, the sum of the areas of the first end edge portion 20rf where the density is higher than the predetermined density ρ20 and thinner than the predetermined thickness t20 is predetermined. It is comprised so that it may become larger than the sum of the area of the part which has density ρ20 of this, and predetermined thickness t20. Therefore, it is easy to suppress the bleeding of the adhesive and the breakage of the nonwoven fabric in the entire region of the first edge portion 20rf.

Further, the first high-density region 251 formed along the first end edge portion 20rf is formed from the side end portion 20rs on one side in the horizontal direction of the packaging sheet 20 to the side end portion 20rs on the other side. ing. Therefore, both-side high-density portions 251s constituting the first high-density region 251 overlap with at least a part of the seal region 29 of the packaging sheet 20 (see FIG. 5). Thereby, the strength of the nonwoven fabric is increased in the overlapping portion, and it is easy to suppress the nonwoven fabric from being broken in the seal region 29 when the seal region 29 is peeled off. For example, when the napkin 1 in an individually packaged state is opened as shown in FIG. 8, when the force for pulling the lead tape 50 is transmitted to the seal region 29, it overlaps with the high density portions 251 s on both sides in the seal region 29. Since the strength of the portion is high, the packaging sheet in which a large force acts on the portion is very difficult to tear.

FIG. 9 is a schematic plan view of the napkin 1 in a folded and individually wrapped state. FIG. 10A is a diagram illustrating an operation when opening an absorbent article packaging body 500 that does not have a high-density portion in a packaging sheet, as a comparative example. FIG. 10B is a diagram illustrating an operation when opening the napkin 1 in an individually packaged state in the present embodiment. FIG. 10A and FIG. 10B are both schematic cross-sectional views of the absorbent article packaging body having a nonwoven fabric packaging sheet when the operation of pulling the lead tape is viewed from the lateral direction.

As described above, when opening the absorbent article packaging body, by pulling the free end side of the lead tape from the inside in the thickness direction to the outside and from one side in the longitudinal direction to the other side, The operation | movement which peels off the packaging sheets currently piled up is performed. Specifically, the free end 550f of the lead tape 550 is pulled, and the adhesive layer 555 that has bonded and fixed the free end 550f to the surface of the packaging sheet 520 is peeled off from the packaging sheet 520.

Here, when the packaging sheet 520 is formed of a non-woven fabric, the surface of the non-woven fabric has fine irregularities formed by intricately intertwining a plurality of fibers, and the surface is rough when viewed microscopically. It is. When the adhesive layer 555 bonded to the surface of the nonwoven fabric is peeled off, a part of the fibers constituting the surface of the nonwoven fabric is peeled off from the nonwoven fabric surface together with the adhesive layer 555. As a result, as shown in FIG. 10A, so-called “fiber loss” may occur on the surface of the nonwoven fabric, or the nonwoven fabric itself may be torn. Further, the peeled fibers adhere to the adhesive layer 555 at the free end portion 550f of the lead tape 550, and the adhesiveness of the adhesive layer 555 is lost at the free end portion 550f.

In contrast, in the napkin 1 of the present embodiment, the fourth high-density region 254 is formed in a region of the packaging sheet 20 that overlaps the free end portion 50f of the lead tape 50 in the thickness direction. That is, the packaging sheet 20 has a density higher than the predetermined density ρ20 and thinner than the predetermined thickness t20 in at least a part of the region where the free end 50f of the lead tape 50 is attached. 25 is formed. In the high-density part 25, the fibers are pressed by applying a compression treatment to the surface of the packaging sheet 20, the fine irregularities on the surface of the nonwoven fabric are reduced, and the surface is in a smooth state. Therefore, in the high density part 25, the strength of the nonwoven fabric is high and the fibers are difficult to peel off. Therefore, even if the operation of peeling off the free end portion 50f of the lead tape 50 from the surface of the packaging sheet 20 is performed, fibers are removed or broken on the surface of the packaging sheet 20 (fourth high density region 254) as shown in FIG. 10B. hard. Further, the peeled fibers are suppressed from adhering to the adhesive layer 55 of the lead tape 50, and the adhesiveness of the adhesive layer 55 is easily maintained. Thereby, even after unpacking the napkin 1, the function of the packaging sheet 20 is not easily impaired, and the packaging sheet 20 can be reused.

FIG. 11 is a diagram for explaining an example of a method for reusing the packaging sheet 20. The napkin 1 uses the absorbent article 10 and then wraps the used absorbent article 10 with the packaging sheet 20 and rolls it up in the longitudinal direction (longitudinal direction) so that the packaging sheet 20 faces outward as shown in FIG. By fixing with the lead tape 50 in the state, the used absorbent article can be discarded as a compact shape without being exposed to the outside. That is, when the usage mode as shown in FIG. 11 is assumed, it is desirable that the packaging sheet 20 has a function of packaging the absorbent article 10 even when the napkin 1 is discarded.

In the present embodiment, as described above, even when the napkin 1 is unfolded, even when the operation of peeling the free end portion 50f of the lead tape 50 attached to the surface of the packaging sheet 20 is performed, It is suppressed that the lead tape 50 (adhesive layer 55) loses its adhesiveness. Therefore, when the napkin 1 after use is discarded, it is possible to fix the packaging state using the lead tape 50 while wrapping the absorbent article 10 with the packaging sheet 20 as shown in FIG.

In the packaging sheet 20, the fourth high-density region 254 is formed along the horizontal direction. That is, the packaging sheet 20 has a density higher than the predetermined density ρ20 and thinner than the predetermined thickness t20 in a wide area in the lateral direction than the area where the free end portion 50f of the lead tape 50 is affixed. It has the part which became. Therefore, when the napkin 1 is folded into the individual packaging state as shown in FIG. 1, even if the position where the free end portion 50f of the lead tape 50 is attached is shifted in the lateral direction, the free end portion 50f is replaced with the high density portion. It becomes easy to arrange in the position which overlaps with 25. Thereby, in the operation | movement which peels off the lead tape 50 stuck, it becomes easier to suppress that the packaging sheet 20 is torn or the adhesiveness of the adhesive layer 55 of the lead tape 50 is impaired.

Moreover, in the napkin 1 in the individually packaged state, as illustrated in FIG. 6, the end adhesion region 27 of the packaging sheet 20 is arranged at a position overlapping with the fourth high-density region 254 in the vertical direction (and the horizontal direction). Yes. If the fourth high-density region 254 (high-density portion 25) is not formed on the packaging sheet 20, the non-woven fibers are bonded together when the end adhesion region 27 is peeled off when the napkin 1 is opened. There is a risk of peeling. On the other hand, in the present embodiment, the end portion adhesion region 27 of the packaging sheet 20 and the high-density portion 25 (fourth height) having a density higher than the predetermined density ρ20 and thinner than the predetermined thickness t20. The density region 254) overlaps. As described above, in the high density portion 25, the fibers are pressed and the surface of the nonwoven fabric is smooth. Therefore, the strength of the nonwoven fabric is high and the fibers are difficult to peel off. Accordingly, it is possible to make it difficult for fibers to fall out or to break the nonwoven fabric when the end adhesion region 27 is peeled off.

In addition, since the end adhesive region 27 and the fourth high density region 254 overlap, the adhesive forming the end adhesive region 27 is less likely to penetrate into the nonwoven fabric. That is, in the portion of the nonwoven fabric surface where the high density portion 25 is formed and the density is high, the adhesive is prevented from oozing out to the opposite surface of the nonwoven fabric. Therefore, problems such as the adhesive in the end adhesive region 27 ooze out to the back side of the packaging sheet 20 and adhere to the absorbent article 10 are less likely to occur.

Moreover, in the napkin 1, the packaging sheet 20 can be smoothly peeled from the absorbent article 10 by pulling the lead tape 50 in the operation of unfolding from the individual packaging state. FIG. 12 is a schematic plan view for explaining the arrangement of the packaging sheet joining portion 132.

In the packaging sheet 20 of the present embodiment, a plurality of packaging sheet joining portions 132 are arranged side by side in the vertical direction. In FIG. 12, three packaging sheet joining portions 132a, 132b, and 132c are arranged side by side from the front side in the vertical direction to the rear side in the central portion in the horizontal direction. And the packaging sheet junction part 132a has overlapped with the 2nd high-density area | region 252 in the vertical direction. Similarly, the packaging sheet joint portion 132b overlaps with the third high-density region 253 in the vertical direction, and the packaging sheet joint portion 132c overlaps with the fourth high-density region 254 in the vertical direction. Therefore, the bonding strength between the packaging sheet 20 and the separator 30 can be increased at the portion where each packaging sheet joining portion 132 and the high density portion 25 constituting the high density regions 252 to 254 overlap. Thereby, when the lead tape 50 is pulled, only the packaging sheet 20 is peeled off from the separator 30, and the problem that the separator 30 remains on the absorbent article 10 side can be made difficult to occur. Note that the shape and size of the packaging sheet joining portions 132a, 132b, and 132c are not limited to those shown in FIG. 12, but can be appropriately changed according to the size, shape, and the like of the packaging sheet 20.

Further, since the packaging sheet joining portion 132 and the high density portion 25 (high density regions 252 to 254) overlap, the adhesive forming the packaging sheet joining portion 132 is on the opposite surface of the packaging sheet 20. It is possible to effectively suppress oozing out.

Moreover, in the napkin 1 of this embodiment, the high density part 25 (1st high density area | region 251) is in the area | region in which the base end part 50s of the lead tape 50 is arrange | positioned in the 1st edge part 20rf of the packaging sheet 20. FIG. It is formed (see FIG. 3). Therefore, the bonding strength between the base end portion 50 s of the lead tape 50 and the packaging sheet 20 is increased in the region, and the lead tape 50 is detached from the packaging sheet 20 when the lead tape 50 is pulled when the napkin 1 is opened. This can be suppressed.

In particular, a central high-density portion 251c having a larger area than the other high-density portions 25 is formed in the central portion in the horizontal direction of the first high-density region 251, and the base of the lead tape 50 is formed in the central high-density portion 251c. The entire region of the end 50s overlaps. That is, the first end edge portion 20rf of the packaging sheet 120 has a predetermined width in a region having a predetermined width from the end 20ef in the vertical direction among the portions overlapping the base end portion 50s of the lead tape 50 in the thickness direction. The density is higher than the density ρ20, and the thickness is thinner than the predetermined thickness t20. Thereby, the peeling of the adhesive layer 55 hardly occurs at the end 20ef of the packaging sheet where the greatest force acts when the lead tape 50 is pulled, and the lead tape 50 is effectively suppressed from being detached from the packaging sheet 20. be able to.

Moreover, the high density part 25 (center high density part 251c) formed in the 1st edge part 20rf of the packaging sheet 20 is horizontal direction rather than the base end part 50s of the lead tape 50, as FIG. 5 shows. It is the area | region which has a large area on both sides. In other words, the packaging sheet 20 has a density higher than the predetermined density ρ20 and higher than the predetermined thickness t20 in a region having a predetermined width outward from both ends of the region overlapping the lead tape 50 in the lateral direction. The thickness is thin. Therefore, since the adhesive layer 55 of the base end portion 50s is disposed so as to overlap the central high-density portion 251c in the entire region in the lateral direction, a force is applied in the lateral direction when the lead tape 50 is pulled. Further, the adhesive layer 55 is hardly peeled off, and the packaging sheet 20 is prevented from being broken at both side portions of the lead tape 50. Further, even when the position where the base end portion 50 s of the lead tape 50 is joined and fixed to the packaging sheet 20 is slightly shifted in the lateral direction when the napkin 1 is manufactured, the adhesive layer 55 of the base end portion 50 s overlaps with the high density portion 25. Since it can arrange | position to the position which carried out, it becomes easy to suppress that the joining strength of the lead tape 50 becomes weak.

In the individually packaged napkin 1, as shown in FIG. 6, the adhesive layer 55 of the lead tape 50 and the end adhesive region 27 of the packaging sheet 20 overlap in the vertical direction (and the horizontal direction). Is arranged. That is, the adhesive layer 55 and the end portion adhesive region 27 are disposed so as to overlap each other with the first end edge portion 20rf of the packaging sheet 20 interposed therebetween. In such a case, if the high density portion 25 (central high density portion 251c) is not formed on the first edge portion 20rf, the adhesive forming the adhesive layer 55 and the end portion adhesive region 27 is a non-woven fabric. There is a risk that it will ooze out to the opposite side of the thickness direction. On the other hand, in the napkin 1, both the adhesive layer 55 and the end adhesive region 27 are disposed so as to overlap the high density portion 25 (central high density portion 251c) having a high fiber density. Therefore, it is difficult for the adhesive to ooze out at the high density portion 25, and sticking of the outer surface of the napkin 1 (packaging sheet 20) in the individually packaged state can be suppressed.

Moreover, as FIG. 3 shows, the 1st crease | fold F1 of the packaging sheet 20 is provided in the position which overlapped with the 4th high density area | region 254 in the vertical direction (longitudinal direction). The first fold F1 is a base point that is first folded when the napkin 1 is folded. In order for the napkin 1 to maintain the individual packaging state, the first fold F1 needs to be firmly creased. However, when the packaging sheet 20 is formed of a flexible non-woven fabric, even if a crease is temporarily formed, it easily returns to its original shape with the passage of time. That is, it is difficult for the “non-woven fabric” to be attached to the nonwoven fabric.

Therefore, in the packaging sheet 20 of the present embodiment, the density is higher than the predetermined density ρ20 and thinner than the predetermined thickness t20 in the region overlapping the first fold line F1 in the vertical direction. . Since the nonwoven fabric is thin, it is easy to bend the nonwoven fabric in the region, and the once folded portion is difficult to return to the original shape. Thereby, when the napkin 1 is folded, the packaging sheet 20 is easily bent at the first fold F1, and the individual packaging state can be easily maintained. Moreover, since the density of the nonwoven fabric of the part in which the 1st crease | fold F1 is provided is high, in the napkin 1 of an individual packaging state, it makes it difficult to produce problems, such as the packaging sheet 20 breaking along the 1st crease | fold F1. be able to. Thereby, since an individual packaging state becomes difficult to collapse, the user can perform actions such as carrying the napkin 1 in a bag with ease.

=== Second Embodiment ===
<Configuration of absorbent article packaging>
In the second embodiment, a sanitary napkin 2 (hereinafter also simply referred to as a napkin 2) including a wing portion will be described as an example of an absorbent article package (individual package). FIG. 13 is a schematic plan view when the napkin 2 in a developed state is viewed from the skin side. The napkin 2 of the second embodiment is different from the napkin 1 of the first embodiment in the shape of the absorbent article 10. Further, the packaging sheet 20 of the napkin 2 is provided with a wing part separator 35 described later. The other basic configuration of the napkin 2 is substantially the same as that of the napkin 1 of the first embodiment.

In the napkin 2, the absorbent article 10 has a wing portion 15. The wing portion 15 is located near the longitudinal center of the absorbent article 10, that is, between at least one of the top sheet 12 and the back sheet 13 in the lateral direction between the one end and the other end in the product longitudinal direction. It is formed by extending outward from the part. A wing adhesive portion 151 to which an adhesive such as a hot melt adhesive is applied is provided on the non-skin side surface in the thickness direction of the wing portion 15, similarly to the main body adhesive portion 131. When the absorbent article 10 is used, the main body adhesive portion 131 of the absorbent article 10 is attached to the inner side of the crotch part (skin side) of the underwear, and then the wing portion 15 is folded to the non-skin side so that the wing adhesive portion 151 is Affix to the outer crotch outer side (non-skin side) of underwear. Thereby, the absorbent article 10 is fixed so as to sandwich the crotch part of the underwear between the main body adhesive part 131 and the wing adhesive part 151, and it becomes easy to suppress misalignment or the like when the absorbent article 10 is worn.

Further, in the napkin 2, the second rear edge portion 20rb on the rear side in the longitudinal direction of the packaging sheet 20 protrudes rearward in the longitudinal direction (outside in the longitudinal direction) from the absorbent article 10 as shown in FIG. Yes. That is, the dimension in the longitudinal direction of the packaging sheet 20 is longer than the dimension in the longitudinal direction of the absorbent article 10. A fifth high density region 255 (also referred to as a “second end edge high density region”) is formed in the second end edge portion 20rb by a plurality of high density portions 25 arranged in the horizontal direction. In the high-density portion 25 of the nonwoven fabric, the same compression treatment as that in the first embodiment is performed, so that the density is higher than the predetermined density ρ20 and the thickness is thinner than the predetermined thickness t20. .

A wing separator joint portion 135 (also referred to as a “wing main body adhesive portion”) is formed on the skin side in the thickness direction of the second edge portion 20rb by applying an adhesive such as a hot melt adhesive. ing. A wing separator 35 is bonded and fixed to the skin side in the thickness direction of the packaging sheet 20 via the wing separator bonding portion 135 (wing main body adhesive portion). The wing separator 35 is a sheet member having a skin-side surface peel-processed using a silicon resin or the like, like the separator 30.

FIG. 14 is a schematic plan view illustrating a state in which the unfolded napkin 2 is folded in the vertical direction at the first fold line F1. FIG. 15 is a schematic cross-sectional view showing the CC cross section of FIG.

When the napkin 2 is put into an individual packaging state as shown in FIG. 1, first, the wing portions 15 protruding from both sides of the absorbent article 10 are folded back in the lateral direction. In FIG. 14, the lateral direction is such that the skin side surface of the absorbent article 10 is on the inside with the first wing fold FW1 and the second wing fold FW2 arranged along the vertical direction at predetermined positions in the lateral direction. The wing parts 15 and 15 on both sides are each folded inward from the lateral outer side. In this state, the wing adhesive portion 151 is exposed on the upper side in the thickness direction.

Subsequently, the packaging sheet 20 and the absorbent article 10 (and the separator 30) are bent in the vertical direction so that the skin side surface of the absorbent article 10 is on the inside with the first fold F1 as a base point. That is, the second end edge 20rb (end 20eb) of the packaging sheet 20 is folded back from the outside in the longitudinal direction (longitudinal direction) to the inside with the first fold line F1 as a base point. At this time, the peeled surface (the lower surface in FIG. 15) of the wing separator 35 joined to the second end edge portion 20rb is attached to the wing adhesive portion 151 so as to be peelable. Thereby, while using the absorbent article 10, it is suppressed that the adhesive which forms the wing adhesion part 151 adheres to the packaging sheet 20, and the wing adhesion part 151 is protected.

In the napkin 2 of the second embodiment, the wing separator joining portion 135 (wing main body adhesive portion) is provided at a position overlapping the fifth high density region 255 (second edge high density region) in the vertical direction and the horizontal direction. It has been. As described above, in the high-density portion 25 (the fifth high-density region 255), the fibers of the nonwoven fabric are pressed, the fine irregularities are reduced, and the surface is in a smooth state. Therefore, compared with the area | region where the high density part 25 is not formed, the contact area of an adhesive agent and a nonwoven fabric surface becomes large, and the adhesive strength of the wing separator junction part 135 (wing main body adhesion part) and the packaging sheet 20 is sufficient. strong. Accordingly, when the napkin 2 in the individually packaged state is opened, the wing separator joint portion 135 (the wing main body adhesive portion) is peeled off, so that the wing separator 35 is detached from the packaging sheet 20 or the wing separator 35 is collected. It is suppressed that it remains in the goods 10 side.

Further, since the wing separator joint portion 135 (wing main body adhesive portion) and the fifth high density region 255 (second edge portion high density region) overlap, the wing separator joint portion 135 is formed in the region. It becomes difficult for the adhesive which has spread out to the opposite side of the thickness direction of the packaging sheet 20 (nonwoven fabric). Thereby, it can suppress that the surface of the packaging sheet 2 is sticky.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

<About the absorbent article 10>
In the above-described embodiment, the absorbent article 10 having a vertically long substantially oval shape as illustrated in FIG. 1 has been described, but the shape and configuration of the absorbent article 10 are not limited thereto. For example, a so-called wing may be provided by the top sheet 12 and the back sheet 13 extending outward from both ends in the lateral direction in the vicinity of the central portion in the longitudinal direction of the absorbent article 10. Moreover, although the linear pressing part is shown by the surface of the absorbent article 10 in FIG. 1, the pressing part of another shape may be provided and the linear pressing part is not provided. Also good.

<How to fold the napkin 1>
In the above-described embodiment, the absorbent article 10 and the packaging sheet 20 are folded at the first fold line F1 and the second fold line F2, so that an example of an individually packaged state of the napkin 1 that is tri-folded in the vertical direction is described. However, the method of folding the napkin 1 is not limited to this. For example, the napkin 1 may be configured to be folded into four or more.

1 sanitary napkins (napkins),
2 sanitary napkins (napkins),
10 Absorbent article, 10ef Absorbent article front end,
11 Absorbent core,
12 top sheet, 12A center top sheet, 12B side top sheet,
13 Backsheet,
20 Packaging sheet,
20ef end (one side), 20rf first edge,
20eb end (the other side), 20rb second edge,
20 rs side end,
25 high density part,
251 1st high density area, 251c center high density part, 251s both sides high density part,
252 second high density region, 253 third high density region, 254 fourth high density region,
255 fifth high density region (second edge high density region),
27 end bonding area, 29 sealing area,
30 separator,
35 Wing separator,
50 lead tape, 50s base end, 50f free end,
55 adhesive layer,
131 Main body adhesive part, 132 Packaging sheet joint part,
135 Wing separator joint (Wing body adhesive part),
151 Wing adhesive part,
t20 thickness, ρ20 density,
F1 first fold, F2 second fold

Claims (18)

It has a vertical direction, a horizontal direction and a thickness direction intersecting each other,
An absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction,
The absorbent article package in which the absorbent article and the packaging sheet are stacked in the thickness direction,
The packaging sheet is a non-woven fabric having a predetermined density and a predetermined thickness, and includes a first edge including an end on one side in the longitudinal direction in an unfolded state and a first end including the other end in the longitudinal direction. Two end edges,
In a state where the absorbent article and the packaging sheet are folded, the first end edge portion is disposed on the outer side in the thickness direction than the second end edge portion,
The base end side of the lead tape is fixed to the surface of the first edge portion,
In the longitudinal direction, the free end side of the lead tape protruding outward from the first edge portion is affixed to the surface of the packaging sheet so as to be peelable,
The first end edge portion has a predetermined width in a region having a predetermined width from at least one end in the longitudinal direction in a portion overlapping with a base end side of the lead tape in the thickness direction. The absorbent article packaging body is characterized in that the density is higher than the density and the thickness is thinner than the predetermined thickness. The absorbent article package according to claim 1,
The first end edge portion has a density higher than the predetermined density and thinner than the predetermined thickness in the entire portion overlapping the base end side of the lead tape in the thickness direction. An absorbent article packaging body, characterized in that The absorbent article package according to claim 1 or 2,
The packaging sheet is higher in density than the predetermined density and thinner than the predetermined thickness in a region having a predetermined width outward from both lateral ends of the portion overlapping the lead tape. The absorbent article packaging body characterized by the above-mentioned. The absorbent article package according to claim 3,
The width in the lateral direction of the region where the density is higher than the predetermined density of the packaging sheet and the thickness is thinner than the predetermined thickness,
The absorbent article packaging body characterized in that the one end in the longitudinal direction is wider than the other end in the longitudinal direction. The absorbent article package according to any one of claims 1 to 4,
An end adhesion region that joins the first edge to the packaging sheet is provided along the lateral direction,
In the longitudinal direction, the end bonded region overlaps with a region having a density higher than the predetermined density and a thickness thinner than the predetermined thickness. Packaging body. The absorbent article package according to any one of claims 1 to 5,
A central high-density portion that is a region having a density higher than the predetermined density in the central portion in the lateral direction and a thickness smaller than the predetermined thickness;
A high-density portion on both sides in the lateral direction of the central high-density portion having a density that is higher than the predetermined density and a thickness that is thinner than the predetermined thickness; and
In the first end edge portion, the central high-density portion and the high-density portions on both sides are arranged side by side at a predetermined interval in the lateral direction. The absorbent article package according to claim 6,
On both sides in the lateral direction, it has a sealing region that joins the packaging sheets stacked in the thickness direction,
The absorbent article package according to claim 1, wherein at least a part of the high-density parts on both sides overlaps with the seal region. The absorbent article package according to claim 6 or 7,
The absorbent article packaging body, wherein an area of the central high-density portion is larger than an area of each of the high-density portions on both sides. The absorbent article package according to any one of claims 1 to 8,
In the first edge,
The sum of the areas of the regions having a density higher than the predetermined density and a thickness smaller than the predetermined thickness is:
Greater than the sum of the areas of the regions having the predetermined density and the predetermined thickness;
An absorbent article package characterized by the above. The absorbent article packaging body according to any one of claims 1 to 9,
The absorbent article has wing portions on both sides in the lateral direction,
The packaging sheet includes a high-density region in which a plurality of high-density portions that are higher in density than the predetermined density and are thinner than the predetermined thickness are arranged in the lateral direction. 2 at the edge,
In a state where the absorbent article and the packaging sheet are folded, a wing separator is provided between the wing portion and the packaging sheet,
The wing separator is joined to the packaging sheet by a wing separator joint,
In the longitudinal direction, the wing separator joining portion overlaps with the high-density region. It has a vertical direction, a horizontal direction and a thickness direction intersecting each other,
An absorbent article, a packaging sheet, and a lead tape provided along the longitudinal direction,
The absorbent article package in which the absorbent article and the packaging sheet are stacked in the thickness direction,
The packaging sheet is a non-woven fabric having a predetermined density and a predetermined thickness, and includes a first edge including an end on one side in the longitudinal direction in an unfolded state and a first end including the other end in the longitudinal direction. Two end edges,
In a state where the absorbent article and the packaging sheet are folded, the first end edge portion is disposed on the outer side in the thickness direction than the second end edge portion,
The base end side of the lead tape is fixed to the surface of the first edge portion,
In the longitudinal direction, the free end side of the lead tape protruding outward from the first edge portion is affixed to the surface of the packaging sheet so as to be peelable,
The packaging sheet is characterized in that the density is higher than the predetermined density and thinner than the predetermined thickness in at least a part of the region where the free end side of the lead tape is affixed. Absorbent article packaging. The absorbent article package according to claim 11,
The packaging sheet has a high-density region in which a plurality of high-density portions that are higher in density than the predetermined density and are thinner than the predetermined thickness are arranged along the lateral direction. ,
The absorbent article packaging body, wherein a region where the free end side of the lead tape is affixed overlaps the high-density region in the longitudinal direction. The absorbent article package according to claim 12,
An end adhesion region that joins the one edge to the packaging sheet is provided along the lateral direction,
In the longitudinal direction, the end adhesive region overlaps with the high-density region. The absorbent article package according to claim 12 or 13,
Having a separator between the absorbent article and the packaging sheet;
The separator is joined to the packaging sheet by a packaging sheet joining portion,
In the longitudinal direction, the packaging sheet joint portion overlaps the high-density region. The absorbent article package according to any one of claims 12 to 14,
A first crease serving as a folding base point when the second end edge of the packaging sheet is folded inward from the outside in the longitudinal direction is provided along the lateral direction;
In the longitudinal direction, the first crease overlaps with the high-density region. The absorbent article package according to any one of claims 11 to 15,
The first end edge portion has a predetermined width in a region having a predetermined width from at least one end in the longitudinal direction in a portion overlapping with a base end side of the lead tape in the thickness direction. The absorbent article packaging body is characterized in that the density is higher than the density and the thickness is thinner than the predetermined thickness. The absorbent article package according to claim 16,
The packaging sheet is higher in density than the predetermined density and thinner than the predetermined thickness in a region having a predetermined width outward from both lateral ends of the portion overlapping the lead tape. The absorbent article packaging body characterized by the above-mentioned. The absorbent article package according to any one of claims 11 to 17,
The absorbent article has wing portions on both sides in the lateral direction,
The packaging sheet has a density higher than the predetermined density, and a second edge portion high density in which a plurality of high density portions, which are portions where the thickness is thinner than the predetermined thickness, are arranged along the lateral direction. A region at the second edge,
In a state where the absorbent article and the packaging sheet are folded, a wing separator is provided between the wing portion and the packaging sheet,
The wing separator is joined to the packaging sheet by a wing main body adhesive portion,
In the longitudinal direction, the wing main body adhesive portion overlaps with the second end edge portion high-density region presence, the absorbent article packaging body, characterized in that.

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