JP2021186400A - Individual packaging of absorbent articles - Google Patents

Abstract

An object of the present invention is to provide an individual package for an absorbent article that can reduce the discomfort caused by the peeling sound generated when the packaging sheets are released from each other when the packaging sheets are unsealed. [Solution] This is an individual package 21 of an absorbent article in which an absorbent article 11 is folded and packaged together with a packaging sheet 24, and the packaging sheet 24 is divided into three equal parts in the longitudinal direction y. The individual packaging body 21 has a first region 27, a second region 28, and a third region 29 defined in this order from the unsealed end 25 side, and the packaging sheet 24 is provided at one end and the other end in the width direction x. The seal part 30 includes a plurality of linear joint parts 31 arranged in the longitudinal direction y, and has an average angle A2 of the extending direction of the joint parts 31 in the second region 28 with respect to the width direction x. is different from the average angle A1 in the first region 27 in the extending direction of the joint portion 31 with respect to the width direction x, and the average angle A3 in the third region 29 in the extending direction of the joint portion 31 in the width direction x. [Selection diagram] Figure 3

Description

The present invention relates to an individual package of an absorbent article in which an absorbent article such as a urine pad (including a light incontinence pad) or a sanitary napkin is wrapped in a packaging sheet.

Conventionally, an individual package of an absorbent article in which the absorbent article is folded together with a packaging sheet is known. An individual package of an absorbent article is usually formed with a seal portion in which packaging sheets are joined to each other at one end and the other end in the width direction, whereby the packaged state of the individual package is maintained. For example, in Patent Document 1, the seal portion of the individual package is composed of a plurality of joint portions, and each joint portion has a side parallel to the longitudinal direction of the packaging sheet and a side inclined with respect to the longitudinal direction of the packaging sheet. The individual package of the absorbent article formed in this manner is disclosed, and in Patent Document 2, the seal portion of the individual package includes a weak joint portion on the inner side in the width direction and a strong joint portion on the outer side thereof. Disclosed are individual packages of absorbent articles formed to have.

Japanese Unexamined Patent Publication No. 2007-268015 Japanese Unexamined Patent Publication No. 2006-325933

When the absorbent article is taken out from the individual package of the absorbent article, the packaging sheet is opened and the bonding between the packaging sheets at the sealing portion is released. At this time, a peeling sound is generated by releasing the joining between the packaging sheets, and the peeling sound may cause discomfort depending on the user.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce discomfort caused by a peeling sound generated when the packaging sheets are released from each other when the packaging sheets are opened. The purpose is to provide an individual package of absorbent articles.

The individual package of the absorbent article of the present invention that has been able to solve the above problems is an individual package of the absorbent article in which the absorbent article is wrapped in a packaging sheet; the absorbent article is together with the packaging sheet. Folded longitudinally, an open end of the packaging sheet is formed on the outer surface of the individual package; the individual package has a first main surface including the open end and a second main surface on the opposite side, and is packaged. The sheet has a first region, a second region, and a third region located on the first main surface side and defined by dividing the region including the opening end into three equal parts in the longitudinal direction, in this order from the opening end side; The individual package has a sealing portion in which packaging sheets are joined to each other at one end in the width direction and the other end, and the sealing portion is configured by arranging a plurality of linear joints in the longitudinal direction; At one end and / or the seal at the other end of the direction, the average angle A2 with respect to the width direction of the extension direction of the joint in the second region is the average with respect to the width direction of the extension direction of the joint in the first region. It is characterized in that the angle A1 is different from the average angle A3 with respect to the width direction of the extending direction of the joint portion in the third region.

In the individual package of the absorbent article of the present invention, the sealing portion is formed as described above, so that when the packaging sheet is opened, the peeling sound emitted when the bonding between the packaging sheets at the sealing portion is released. However, it changes in the first region and the second region, and further changes in the second region and the third region. Therefore, the peeling sound fluctuates, and the discomfort when opening the packaging sheet can be reduced. In addition, since a plurality of joints are provided so as to extend in multiple directions, even if a peeling force acts on the packaging sheet in a certain direction, it is difficult to release the joints at the seal portion at one time, and individual packaging is performed. The packaging condition of the body can be maintained stably.

It is preferable that the seal portion at one end in the width direction and the seal portion at the other end are formed substantially symmetrically with respect to the longitudinal direction. This makes it easier to evenly release the joint between the seal portion at one end and the seal portion at the other end in the width direction when the packaging sheet is opened from the opened end, and it becomes easier to open the packaging sheet cleanly. ..

At one end in the width direction and the sealing part at the other end, each joint is provided so as to extend in the width direction, extend in the longitudinal direction, or incline toward the opening end side. It is preferable that the absolute value of the average angle A1 is smaller than the absolute value of the average angle A2, and the absolute value of the average angle A2 is smaller than the absolute value of the average angle A3. If the sealing portion is formed in this way, it is difficult for the packaging sheet to be unintentionally opened from the opening end even if the individual packaging body comes into contact with other articles and a peeling force is applied to the opening surface of the packaging sheet. Become. In addition, the peeling noise when opening the packaging sheet can be suppressed to a small level.

At one end in the width direction and the sealing part at the other end, each joint is provided so as to extend in the width direction, extend in the longitudinal direction, or incline toward the opening end side. It is also preferable that the absolute value of the average angle A1 is larger than the absolute value of the average angle A2, and the absolute value of the average angle A2 is larger than the absolute value of the average angle A3. When the sealing portion is formed in this way, the packaging sheet can be easily opened from the opened end, and the peeling noise when opening the packaging sheet can be suppressed to a small level.

At one end in the width direction and the sealing part at the other end, each joint extends in the width direction, extends in the longitudinal direction, or extends at an angle opposite to the opening end. It is also preferable that the absolute value of the average angle A1 is smaller than the absolute value of the average angle A2 and the absolute value of the average angle A2 is smaller than the absolute value of the average angle A3. .. If the sealing portion is formed in this way, it is difficult for the packaging sheet to be unintentionally opened from the opening end even if the individual packaging body comes into contact with other articles and a peeling force is applied to the opening surface of the packaging sheet. Become. Further, even if a part of the packaging sheet is unintentionally opened from the opening end, it is less likely that the entire opening surface is further opened.

At one end in the width direction and the sealing part at the other end, each joint extends in the width direction, extends in the longitudinal direction, or extends at an angle opposite to the opening end. It is also preferable that the absolute value of the average angle A1 is larger than the absolute value of the average angle A2 and the absolute value of the average angle A2 is larger than the absolute value of the average angle A3. .. If the seal portion is formed in this way, even if another article is caught on the opened end of the packaging sheet and a force is applied in the direction in which the opened end is opened, the joint portion has a wide width against the force. It becomes easier to compete with each other, and it becomes difficult for the packaging sheets to be unbonded. Further, even if a part of the packaging sheet is unintentionally opened from the opened end, it is less likely that the bonding between the packaging sheets at the sealing portion is further released.

When the absolute value of the average angle A1 is smaller than the absolute value of the average angle A2 and the absolute value of the average angle A2 is smaller than the absolute value of the average angle A3, from the first region. In the third region, it is preferable that the extending direction of the plurality of joints arranged in the longitudinal direction is formed so that the closer to the opening end, the smaller the angle formed with the width direction. When the absolute value of the average angle A1 is larger than the absolute value of the average angle A2 and the absolute value of the average angle A2 is larger than the absolute value of the average angle A3, the first region is formed. In the third region, it is preferable that the extending direction of the plurality of joints arranged in the longitudinal direction is formed so that the closer to the opening end, the larger the angle formed with the width direction. When the sealing portion is formed in this way, when the packaging sheet is opened from the opening end, it becomes easy to smoothly open the opened surface of the packaging sheet without interruption in the middle.

In the individual package of the absorbent article of the present invention, when the packaging sheet is opened, the peeling sound emitted when the bonding between the packaging sheets at the seal portion is released changes between the first region and the second region. Then, it further changes between the second region and the third region. Therefore, the peeling sound fluctuates, and the discomfort when opening the packaging sheet can be reduced.

An example of an absorbent article used for an individual package of an absorbent article is shown, and a plan view of the absorbent article as viewed from the skin surface side is shown. FIG. 1 shows a cross-sectional view taken along the line II-II of the absorbent article shown in FIG. FIGS. 3 (a) and 3 (b) show an example of a method of forming an individual package of an absorbent article, and FIG. 3 (b) shows a plan view of the individual package of the absorbent article as viewed from the first main surface side. show. FIG. 3B shows a perspective view of an individual package of an absorbent article shown in FIG. 3 (b). Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown. Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown. Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown. Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown. Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown. Another example of a plan view of an individual package of an absorbent article as viewed from the first main surface side is shown.

The individual package of the absorbent article of the present invention is a package in which the absorbent article is wrapped in a packaging sheet. First, the absorbent article used in the present invention will be described.

The absorbent article used in the present invention is used by applying it to the crotch of the wearer, and is not particularly limited as long as it can receive excrement such as urine. Examples of the absorbent article include a urine pad (including a light incontinence pad), a sanitary napkin, a disposable diaper, and the like. The absorbent articles used in the present invention are individually packaged in a packaging sheet, and examples of such absorbent articles generally include urine pads, sanitary napkins, and the like, and the absorbent articles of the present invention. Sex articles are suitably applied to such applications.

The shape of the absorbent article is not particularly limited. When the absorbent article is a urine pad or a sanitary napkin, the shape of the absorbent article is shown to be substantially rectangular, oval, hourglass-shaped, battledore-shaped or the like.

The absorbent article is configured, for example, by arranging an absorbent body between a liquid-permeable top sheet and a liquid-impermeable back sheet. The top sheet is a sheet located on the skin surface side of the absorbent article, and the back sheet is a sheet located on the non-skin surface side of the absorbent article. In the present invention, the skin surface side means the side facing the wearer's skin when wearing the absorbent article, and the non-skin surface side means the side facing away from the wearer. Further, the surface of the absorbent article on the non-skin surface side is referred to as an outer surface.

The absorbent article has a longitudinal direction and a width direction. The longitudinal direction means the direction extending in the anteroposterior direction of the wearer's crotch when the wearer wears the absorbent article, and the width direction is on the same plane as the absorbent article and orthogonal to the longitudinal direction. Means direction. The longitudinal direction and the width direction of the individual package and the packaging sheet of the absorbent article are also determined based on the longitudinal direction and the width direction of the absorbent article.

Examples of the top sheet include non-woven fabrics formed from hydrophilic fibers such as cellulose, rayon and cotton; and hydrophobicity such as polyolefins (eg polypropylene, polyethylene), polyesters (eg PET) and polyamides (eg nylon). A non-woven fabric formed from fibers, in which the surface of the hydrophobic fibers is hydrophilized with a surfactant, or the like can be used. Further, as the top sheet, a woven cloth, a knitted cloth, or a plastic film having holes may be used.

As the back sheet, a non-woven fabric formed of hydrophobic fibers such as polyolefin (for example, polyethylene and polypropylene), polyester (for example, PET) and polyamide (for example, nylon), a plastic film and the like can be used. Further, a laminate of a non-woven fabric and a plastic film may be used.

When the top sheet or back sheet is made of a non-woven fabric, it is preferable to use a spunbonded non-woven fabric, an air-through non-woven fabric, a point-bonded non-woven fabric, a melt blow non-woven fabric, an air-laid non-woven fabric, an SMS non-woven fabric, or the like.

The absorber is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorber, for example, a molded body obtained by molding an absorbent material into a predetermined shape can be used, and the molded body is covered with a sheet member such as a paper sheet (for example, tissue paper or tissue paper) or a liquid-permeable non-woven fabric. You may. Examples of the absorbent material contained in the absorber include hydrophilic fibers such as cellulose fibers (for example, crushed pulp fibers), and water absorption such as polyacrylic acid type, polyaspartic acid type, cellulose type, and starch / acrylonitrile type. Examples include sex resin. Further, the absorbent material may include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-sealing fibers such as polyamide fibers such as nylon. These heat-fusing fibers may be hydrophilized with a surfactant or the like in order to enhance the affinity with body fluids such as urine.

The absorbent material preferably contains hydrophilic fibers from the viewpoint of increasing the absorption rate of urine and the like. Further, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water-absorbent resin. Therefore, it is preferable that the absorber contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, it is preferable to use an aggregate of hydrophilic fibers mixed or sprayed with a water-absorbent resin.

The absorber may be a sheet-shaped absorber. Examples of the sheet-like absorber include those formed so as to have a water-absorbent resin between the nonwoven fabrics and not to have pulp fibers. Since the sheet-shaped absorber thus formed has a water-absorbent resin between the nonwoven fabrics, a high absorption capacity can be realized. Further, since the sheet-shaped absorber does not have pulp fibers between the non-woven fabrics, it can be formed thin without being bulky.

The sheet-shaped absorber may use a water-absorbent fiber as an absorbent material. In this case as well, the absorber is not bulky and is formed thin. Examples of the water-absorbent fiber include fibers containing a protonated or salt-formed carboxyl group. For example, a water-absorbent fiber can be obtained by hydrolyzing an acrylic fiber to convert a nitrile group contained in the acrylic fiber into a carboxyl group. At this time, it is preferable that the carboxyl group contained in the water-absorbent fiber forms an alkali metal salt or an ammonia salt. Further, the water-absorbent fiber can be produced by immersing the hydrophilic fiber in acrylic acid and precipitating acrylic acid on the fiber surface.

It is preferable that the absorbent article is provided with rising flaps on both sides in the width direction on the skin surface side. By providing a rising flap, lateral leakage of urine or the like is prevented. For the rising flap, for example, side sheets extending in the longitudinal direction are joined to both sides in the width direction of the top sheet, and an elastic member is attached to the inner portion in the width direction of the side sheet (near the upper end when the rising flap stands up). Is formed by providing. By providing the side sheet and the elastic member in this way, the inner portion of the side sheet in the width direction rises toward the wearer's skin due to the contraction force of the elastic member, and a rising flap is formed. The rising flap or side sheet is preferably made of a liquid-impermeable plastic film, a liquid-impermeable non-woven fabric, or the like.

It is preferable that the outer surface of the absorbent article is provided with an adhesive portion, and specifically, it is preferable that the back sheet is provided with an adhesive portion. By providing the adhesive portion, the absorbent article can be fixed to the skin surface side such as pants.

The adhesive portion is preferably peelably bonded to the inner surface of the packaging sheet for packaging the absorbent article, whereby the absorbent article is stably held in the state of being packaged in the packaging sheet. When the absorbent article is used, the packaging sheet is peeled off from the adhesive portion, so that the absorbent article can be fixed to the skin surface side of pants or the like by the adhesive portion. For the absorbent article, a release sheet may be attached to the inner surface of the packaging sheet, the release sheet and the adhesive portion may be detachably joined, and the release sheet may be wrapped in the packaging sheet. The release sheet may be a laminate that can be peeled off from the adhesive portion, for example, a laminate made of a plastic film or a laminate whose side facing the absorbent article is made of a plastic film (for example, paper, a non-woven fabric, or a woven cloth on a plastic film). Alternatively, it can be composed of a laminated body in which a knitted cloth or the like is laminated), or a silicone-processed paper (a paper coated with a silicone resin and provided with a release layer) or the like. The adhesive portion can be formed by applying an adhesive to the outer surface of the absorbent article or by attaching an adhesive tape.

The absorbent article is packaged in a packaging sheet to form an individual package of the absorbent article. The individual package is formed by folding the absorbent article together with the packaging sheet in the longitudinal direction. The wrapping sheet wraps the absorbent articles individually (one by one). The packaging sheet may be formed from one sheet member, or may be formed by joining two or more sheet members together.

The packaging sheet can be composed of, for example, a plastic film, paper, a cloth (nonwoven fabric, woven cloth, knitted cloth, etc.), or a laminate made of any combination thereof. When the absorbent article is provided with a peelable adhesive portion from the packaging sheet, the side of the packaging sheet facing the absorbent article is made of a plastic film, or the surface of the packaging sheet facing the absorbent article is treated with silicone. Is preferable. The packaging sheet is preferably formed in a rectangular shape, and preferably extends outward in the width direction of the absorbent article in a state of being overlapped with the absorbent article.

The packaging sheet has an inner surface facing the absorbent article side and an outer surface facing the opposite side. The inner and outer surfaces of the packaging sheet are defined based on the state in which the packaging sheet wraps the absorbent article. At least a part of the outer surface of the packaging sheet is exposed to the outside of the individual packaging body, and constitutes the outer surface of the individual packaging body.

The individual package is formed by stacking the absorbent article on the inner side surface of the packaging sheet and folding the absorbent article together with the packaging sheet in the longitudinal direction. The absorbent article was stacked on the inner surface of the packaging sheet, and the absorbent article and the packaging sheet were folded together at one, two or three creases extending in the width direction, and folded in two, three or four in the longitudinal direction. It is preferable that an individual package of the absorbent article is formed. As a result, the individual package can be compactly formed. The individually wrapped body thus folded is formed in a rectangular shape, and both end edges in the longitudinal direction are formed from the folds in which the packaging sheet is folded back together with the absorbent article.

In the individual package, the absorbent article is folded in the longitudinal direction together with the package sheet, so that the opened end of the package sheet is formed on the outer surface. When releasing the packaging state of the individual package, the absorbent article can be taken out by opening the packaging sheet from the opened end of the packaging sheet and unfolding the packaging sheet and the absorbent article. The opened end of the wrapping sheet can be formed from one end in the longitudinal direction of the wrapping sheet, or can be formed from the folded end in which the wrapping sheet is folded back in the longitudinal direction. In the latter case, the packaging sheet may be folded alone or with an absorbent article.

It is preferable that the opening end of the packaging sheet is provided with a sealing tape that maintains the packaging state of the individual package. The sealing tape is attached to the opening end of the packaging sheet, extends outward in the longitudinal direction from the opening end, and is peelably attached to the outer surface of the packaging sheet near the opening end in the state of an individual package. It is preferable to be done.

The individual package has a first main surface and a second main surface. In the individual package, the first main surface means the main surface of the individual package on the side where the opening end of the packaging sheet is present. Further, in the packaging sheet, the area located on the first main surface side and including the opening end is referred to as an opening surface. The opening surface of the packaging sheet is divided into three equal parts in the longitudinal direction to be divided into a first region, a second region, and a third region from the opening end side. That is, the opening surface of the packaging sheet has a first region, a second region, and a third region defined by being divided into three equal parts in the longitudinal direction in this order from the opening end side.

The individual package has a sealing portion in which packaging sheets are joined to each other at one end and the other end in the width direction. The seal portion is configured by arranging a plurality of linear joint portions in the longitudinal direction. The seal portion is defined as a group of joints in which a plurality of joints are arranged in the longitudinal direction. The sealing portion can be formed by a known bonding means such as an adhesive, heat welding, or ultrasonic welding. One end and the other end of the individual package include one end or the other end of the individual package, and can be defined as a region within, for example, 15 mm, preferably within 10 mm from the one end or the other end.

In the seal portion, a part of the plurality of joint portions extends in one direction, and the other portion extends in the other direction. Specifically, in the one end portion and / or the other end portion of the sealing portion in the width direction of the opened surface of the packaging sheet, the average angle A2 with respect to the width direction of the extending portion of the joint portion in the second region is the first region. The average angle A1 with respect to the width direction of the extension direction of the joint portion in the third region is different from the average angle A3 with respect to the width direction of the extension direction of the joint portion in the third region. In the individual package of the absorbent article of the present invention, the sealing portion is formed in this way, so that when the packaging sheet is opened from the opening end, the peeling that occurs when the sealing portion releases the bonding between the packaging sheets. The sound changes in the first region and the second region, and further changes in the second region and the third region. Therefore, the peeling sound fluctuates, and the discomfort when opening the packaging sheet can be reduced. Further, since a plurality of joint portions are provided so as to extend in multiple directions, even if a peeling force acts on the packaging sheet in a certain direction, it is difficult to release the joints at the seal portion at one time, and the individual packaging body. The packaging condition of the product can be maintained stably.

The joint is provided linearly, that is, is provided in a long shape in one direction. The angle in the extending direction of each joint is obtained from the angle of the line connecting one end and the other end of the joint. The angle in the extending direction of each joint is defined as 0 ° in the width direction and plus in the direction of rotation toward the opening end side, and the angle formed with the width direction is obtained. That is, when the individual package is placed so that the opening end faces upward, the joint portion of the seal portion on the left side faces 0 ° in the width direction and counterclockwise is positive, and the joint portion of the seal portion on the right side faces. The width direction is 0 ° and the clockwise direction is a plus, and the angle in the extending direction of each joint is obtained. Since a linear joint usually has a certain width, the positions of one end and the other end of each joint are defined as positions on the width center line of each joint. The joint portion may be provided as a continuous linear shape or may be provided as an intermittent linear shape. In the latter case, the angle in the extending direction of the joint portion can be obtained by complementing the intermittent portion of the intermittent linear joint portion to form a continuous linear joint portion. The length of the intermittent portion of the intermittent linear joint portion is preferably 0.5 mm or less, more preferably 0.4 mm or less, still more preferably 0.3 mm or less.

The average angle in the extending direction of the joint in each region is obtained as the arithmetic mean of the angles of the joints provided in each region. The joint portion extending across the plurality of regions determines in which region the joint portion exists based on the region in which a larger portion of the joint portion exists. In the individual package, the average angle in the extending direction of the joint portion in each region is obtained for each of the seal portion at one end and the seal portion at the other end in the width direction. Then, at at least one of the seal portion at one end and the seal portion at the other end in the width direction, the average angle A2 of the joint portion of the second region is the average angle A1 of the joint portion of the first region and the third region. It suffices if it is formed so as to be different from the average angle A3 of the joint portion. Preferably, in both the seal portion at one end and the seal portion at the other end in the width direction, the average angle A2 of the joint portion of the second region is the average angle A1 of the joint portion of the first region and the third region. It is formed so as to be different from the average angle A3 of the joint.

In the one end portion and / or the other end portion sealing portion in the width direction, the average angle A2 of the joint portion of the second region is the average angle A1 of the joint portion of the first region and the average angle A3 of the joint portion of the third region. It is preferably formed so as to be different from 10 ° or more, more preferably 15 ° or more, still more preferably 20 ° or more. By forming the joint portion in each region in this way, the peeling sound when the packaging sheet is opened can be further changed. The average angle A1 of the joint portion of the first region and the average angle A3 of the joint portion of the third region may be the same or different from each other, but the change in the peeling sound when the packaging sheet is opened is further enhanced. From the point of view, it is preferable that the average angle A1 of the joint portion of the first region and the average angle A3 of the joint portion of the third region are different from each other. That is, it is preferable that the average angle A1 of the joint portion of the first region, the average angle A2 of the joint portion of the second region, and the average angle A3 of the joint portion of the third region are different from each other.

In the seal portion at one end and / or the other end in the width direction, it is preferable that a plurality of joints are arranged in the longitudinal direction in each region. In this case, the extending directions of the plurality of joints provided in each region may be the same or different from each other. In the latter case, that is, when a plurality of joints having different extending directions are provided in each region, the change in the peeling sound when the packaging sheet is opened can be further enhanced.

For the joints arranged in the longitudinal direction, the separation distance between the adjacent joints is preferably 0.6 mm or more, more preferably 0.8 mm or more, preferably 5.0 mm or less, and 4.0 mm or less. Is more preferable, and 3.0 mm or less is further preferable. The number of joints arranged in each region is preferably 3 or more, more preferably 5 or more, more preferably 7 or more, more preferably 40 or less, still more preferably 35 or less, still more preferably 30 or less.

In each sealing portion, the maximum angle difference in the extending direction of the plurality of joint portions is preferably 20 ° or more, more preferably 30 ° or more, still more preferably 40 ° or more. By providing the joint portion in this way, the peeling sound when the packaging sheet is opened can be greatly changed.

It is preferable that the seal portion at one end in the width direction and the seal portion at the other end are formed substantially symmetrically with respect to the longitudinal direction. When the sealing portion is formed in this way, when the packaging sheet is opened from the opened end, it becomes easy to evenly release the joining of the sealing portion at one end in the width direction and the sealing portion at the other end. It makes it easier to open the packaging sheet cleanly.

Each sealing portion preferably includes a joint portion having an angle in the extending direction of −10 ° or more and 10 ° or less, and more preferably a joint portion having an angle of −5 ° or more and 5 ° or less. If the seal portion is formed in this way, it is unlikely that all the joints in the seal portion will be unintentionally released.

It is preferable that the length of each joint portion is secured to some extent in the width direction and the length in the longitudinal direction is not too long. This makes it easier to secure the bonding force between the packaging sheets in the sealing portion. In addition, it is less likely that all the joints in the seal portion will be unintentionally released. From such a viewpoint, it is preferable that each seal portion does not include a joint portion having an angle in the extending direction of more than 80 ° or less than −80 °. More preferably, each seal does not include a joint with an extending direction angle greater than 70 ° or less than −70 °.

From the viewpoint of suppressing the peeling noise when opening the packaging sheet as much as possible, each joint portion constituting the sealing portion extends in the width direction, extends in the longitudinal direction, or extends at an angle toward the opening end side. It is preferable that it is provided so as to do so. That is, the angle of each joint portion constituting the seal portion in the extending direction is preferably 0 ° or more and 90 ° or less, more preferably 80 ° or less, and further preferably 70 ° or less. By forming the sealing portion in this way, when the packaging sheet is opened from the opened end, it becomes easy to release the joint between the packaging sheets at the sealing portion, and the peeling noise can be reduced.

On the other hand, from the viewpoint of preventing the packaging sheet from being unintentionally opened from the opening end, each joint portion constituting the sealing portion extends in the width direction, extends in the longitudinal direction, or is the opening end. It may be provided so as to be inclined and extended to the opposite side. That is, the angle in the extending direction of each joint portion constituting the seal portion is preferably −90 ° or more and 0 ° or less, more preferably −80 ° or more, and further preferably −70 ° or more. By forming the sealing portion in this way, even if the opened surface of the packaging sheet comes into contact with other articles and a peeling force acts on the packaging sheet from the opening end toward the opening direction, the sealing portion is formed. It becomes difficult to release the joint between the packaging sheets.

In the one-end and / or the other-end seal in the width direction, the average angle A1 of the joints in the first region is smaller than the average angle A2 of the joints in the second region, and the average of the joints in the second region. The angle A2 is formed so as to be smaller than the average angle A3 of the joint portion of the third region, or the average angle A1 of the joint portion of the first region is larger than the average angle A2 of the joint portion of the second region. It is preferable that the average angle A2 of the joint portion of the second region is formed to be larger than the average angle A3 of the joint portion of the third region. When the sealing portion is formed in this way, when the packaging sheet is opened from the opening end, it becomes easy to smoothly open the opened surface of the packaging sheet.

In each seal portion, a plurality of joint portions arranged in the longitudinal direction may be provided so that the extending direction gradually changes. For example, on the opening surface of the packaging sheet, the angle in the extending direction with respect to the width direction of the joint may be formed so as to be the largest on the opening end side, or conversely the smallest on the opening end side. Alternatively, the angle of the extending direction with respect to the width direction of the joint is formed so as to be the largest in the central portion in the longitudinal direction of the opened surface, or conversely formed to be the smallest in the central portion in the longitudinal direction of the opened surface. May be done. The angle in the extending direction with respect to the width direction of the plurality of joints arranged in the longitudinal direction may change periodically. When a plurality of joints arranged in the longitudinal direction are provided so as to gradually change the extending direction, some adjacent joints may have the same extending direction.

It is also preferable that the joint portions constituting the seal portion are formed so that the difference in the extending direction of the adjacent joint portions is all 30 ° or less. When the sealing portion is formed in this way, when the packaging sheet is opened from the opening end, it becomes easy to smoothly open the opened surface of the packaging sheet. In this case, the difference in the extending direction of the adjacent joints is more preferably 20 ° or less, further preferably 10 ° or less.

On the opening surface of the packaging sheet, each joint constituting the sealing portion is provided so as to extend in the width direction, extend in the longitudinal direction, or extend in an inclined direction toward the opening end side, and extend in the longitudinal direction. It is also preferable that the extending direction of the plurality of joints arranged in the opening is closer to the opening end so that the angle formed with the width direction becomes larger or smaller. Alternatively, on the opening surface of the packaging sheet, each joint portion constituting the sealing portion is provided so as to extend in the width direction, extend in the longitudinal direction, or extend at an angle opposite to the opening end. It is also preferable that the extending direction of the plurality of joints arranged in the longitudinal direction is closer to the opening end so that the angle formed with the width direction becomes larger or smaller. When the sealing portion is formed in this way, when the packaging sheet is opened from the opening end, it becomes easy to smoothly open the opened surface of the packaging sheet without interruption in the middle. The angle formed by the width direction of the joint portion means the absolute value of the angle with respect to the width direction of the extension direction of the joint portion.

An example of the configuration of the individual package of the absorbent article will be described with reference to FIGS. 1 to 4. The present invention is not limited to the embodiments shown in the drawings.

1 and 2 show an example of an absorbent article used in the present invention, and a light incontinence pad is shown as the absorbent article. FIG. 1 shows a plan view of the absorbent article as viewed from the skin surface side, and FIG. 2 shows a cross-sectional view taken along the line II-II of the absorbent article shown in FIG. In the drawings, the arrow x represents the width direction, the arrow y represents the longitudinal direction, and the direction perpendicular to the plane formed by the arrows x, y represents the thickness direction z.

The absorbent article 11 shown in FIGS. 1 and 2 has a top sheet 12, a back sheet 13, and an absorber 14 arranged between them. In the absorbent article 11, a mount 15 is provided between the back sheet 13 and the absorber 14, and the mount 15 can improve the shape retention of the absorbent article 11. The mount 15 can be made of crepe paper or non-woven fabric. The mount 15 may not be provided. The absorbent article 11 is worn with the longitudinal direction y aligned with the front-back direction of the wearer's crotch and the width direction x aligned with the left-right direction of the wearer.

It is preferable that side sheets 16 extending in the longitudinal direction y are provided on both sides of the top sheet 12 in the width direction x, and the side sheets 16 form rising flaps 17 that serve as leak-proof walls for urine and the like. The side sheet 16 is provided with an upright elastic member 18 at an inner portion in the width direction x. When the absorbent article 11 is used, the inner portion of the side sheet 16 rises toward the wearer's skin due to the contraction force of the standing elastic member 18 to form a flap 17, thereby preventing lateral leakage of urine or the like. ..

As shown in FIG. 2, it is preferable that the adhesive portion 19 is provided on the outer surface of the back sheet 13. The adhesive portion 19 allows the absorbent article 11 to be suitably attached to the skin surface side of pants or the like. It is preferable that the adhesive portion 19 is detachably joined to the packaging sheet 24 described later.

FIG. 3 shows an example of a method of packaging the absorbent articles shown in FIGS. 1 and 2 with a packaging sheet to form an individual package. FIG. 3A shows an absorbent article and a packaging sheet before packaging, and FIG. 3B shows an individual package of the absorbent article. As an individual package of the absorbent article formed as shown in FIG. 3, FIG. 3 (b) shows a plan view of the individual package, and FIG. 4 shows a perspective view of the individual package. ..

The individual package 21 is formed by packaging the absorbent article 11 with the packaging sheet 24. In FIG. 3, the individual package 21 is formed by stacking the absorbent article 11 on the inner side surface of the package sheet 24 and folding the absorbent article 11 together with the package sheet 24 at the creases F1 and F2. Specifically, in the individual package 21, at least a part of the outer surface of the absorbent article 11 is covered with the packaging sheet 24, and the absorbent article 11 is folded back at the creases F1 and F2 extending in the width direction x together with the packaging sheet 24. As a result, the absorbent article 11 is folded in three in the longitudinal direction y. At this time, it is preferable that the packaging sheet 24 is detachably bonded to the adhesive portion 19 provided on the back sheet 13 of the absorbent article 11.

The individual package 21 has a first main surface 22 including an opening end 25 and a second main surface 23 on the opposite side thereof (see FIG. 4). The first main surface 22 and the second main surface 23 are classified by a crease F1 and a crease F2, respectively. The packaging sheet 24 is located on the first main surface 22 side, and the opening surface 26 is defined as an area including the opening end 25.

It is preferable that the sealing tape 32 is provided at the opening end 25 of the packaging sheet 24. In the individual package 21, the sealing tape 32 is provided so as to connect the opening end 25 and the outer surface of the packaging sheet 24 in the vicinity thereof. The sealing tape 32 preferably maintains the packaging state of the individual package 21. When releasing the packaging state of the individual package 21, the packaging sheet 24 can be easily opened from the opening end 25 by picking and pulling the sealing tape 32.

As shown in FIG. 3B, the packaging sheet 24 has a first region 27, a second region 28, and a third region 29 defined by dividing the opening surface 26 into three equal parts in the longitudinal direction y. It is held in this order from the opening end 25 side. In the individual packaging body 21, a sealing portion 30 is formed at one end portion and the other end portion in the width direction x, and the packaging sheets 24 are joined to each other at the sealing portion 30.

The seal portion 30 is configured such that a plurality of linear joint portions 31 are arranged in the longitudinal direction y, and the plurality of joint portions 31 arranged in the longitudinal direction y are provided so as to extend in multiple directions. In the individual package 21, the sealing portion 30 of one end portion and the other end portion in the width direction x has an average angle A2 with respect to the width direction x in the extending direction of the joint portion 31 in the second region 28 in the first region 27. The joint portion 31 is formed so as to be different from the average angle A1 with respect to the width direction x in the extending direction and the average angle A3 with respect to the width direction x of the joining portion 31 in the extending direction in the third region 29. In the individual package 21 shown in FIGS. 3B and 4, the joint portion 31 of the first region 27 and the joint portion 31 of the third region 29 are formed so as to extend in the width direction x, and the joint portion 31 of the second region 28 is formed. The joint portion 31 is formed so as to extend diagonally with respect to the width direction x. As a result, the average angle A1 in the extending direction of the joint portion 31 in the first region 27 and the average angle A3 in the extending direction of the joining portion 31 in the third region 29 are formed to be the same, and the joint portion 31 in the second region 28 is formed. The average angle A2 in the extending direction is different from these. When the sealing portion 30 is formed in this way, when the packaging sheet 24 is opened from the opening end 25, the peeling sound emitted when the sealing portion 30 releases the bonding between the packaging sheets 24 is the first region. It changes between 27 and the second region 28, and also changes between the second region 28 and the third region 29. Therefore, the peeling sound fluctuates, and the discomfort when opening the packaging sheet 24 can be reduced. Further, even if a peeling force acts on the packaging sheet 24 in a certain direction, it becomes difficult for the sealing portion 30 to be released at once, and the packaging state of the individual packaging body 21 can be stably maintained.

The arrangement pattern of the joint portion in the seal portion of the individual package can be various arrangement patterns other than the examples shown in FIGS. 3 (b) and 4. 5 to 10 show another example of a plan view of an individual package of an absorbent article viewed from the first main surface side, and an example of a seal portion formed by various arrangement patterns is shown. Has been done.

In FIG. 3B, the extending direction of the joint portion 31 of the first region 27 and the extending direction of the joint portion 31 of the third region 29 are the same, and these are the extending directions of the joint portion 31 of the second region 28. However, as shown in FIG. 5, the extending direction of the joint portion 31 of the first region 27, the extending direction of the joint portion 31 of the second region 28, and the joint portion of the third region 29 are shown. The extending directions of 31 may be different from each other. That is, the average angle A1 in the extending direction of the joint portion 31 in the first region 27, the average angle A2 in the extending direction of the joining portion 31 in the second region 28, and the average in the extending direction of the joining portion 31 in the third region 29. The angles A3 may be different from each other.

In FIGS. 3 (b) and 5, each seal portion 30 is formed so that the extending directions of all the joint portions 31 are the same in each region of the first region 27, the second region 28, and the third region 29. However, as shown in FIGS. 6 to 10, each seal portion 30 may be formed so that a plurality of joint portions 31 extend in multiple directions within one region. If the seal portion 30 is formed in this way, the peeling sound when the packaging sheet 24 is opened can be smoothly changed.

In FIGS. 5 and 6, each joint portion 31 constituting the seal portion 30 is provided so as to extend in the width direction x or to be inclined toward the opening end 25 side. Then, in each seal portion 30, the absolute value of the average angle A1 with respect to the width direction x of the joint portion 31 of the first region 27 is smaller than the absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28. , The absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28 is formed to be smaller than the absolute value of the average angle A3 with respect to the width direction x of the joint portion 31 of the third region 29. .. If the sealing portion 30 is formed in this way, even if the individual packaging body 31 comes into contact with other articles and a peeling force is applied to the opening surface 26 of the packaging sheet 24, the packaging sheet 24 can be removed from the opening end 25. It becomes difficult to open unintentionally. In addition, the peeling noise when opening the packaging sheet 24 can be suppressed to a small level. In FIGS. 5 and 6, a part of the joint portion 31 constituting the seal portion 30 may extend in the front-rear direction y.

Also in FIG. 7, each joint portion 31 constituting the seal portion 30 is provided so as to extend in the width direction x or to be inclined toward the opening end 25 side. However, in the seal portion 30, the absolute value of the average angle A1 with respect to the width direction x of the joint portion 31 of the first region 27 is larger than the absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28. The absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the two regions 28 is formed to be larger than the absolute value of the average angle A3 with respect to the width direction x of the joint portion 31 of the third region 29. When the sealing portion 30 is formed in this way, the packaging sheet 24 can be easily opened from the opening end 25, and the peeling noise when opening the packaging sheet 24 can be suppressed to a small level. In FIG. 7, a part of the joint portion 31 constituting the seal portion 30 may extend in the front-rear direction y.

In FIG. 8, each joint portion 31 constituting the seal portion 30 is provided so as to extend in the width direction x or to be inclined to the side opposite to the opening end 25. Then, in each seal portion 30, the absolute value of the average angle A1 with respect to the width direction x of the joint portion 31 of the first region 27 is smaller than the absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28. , The absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28 is formed to be smaller than the absolute value of the average angle A3 with respect to the width direction x of the joint portion 31 of the third region 29. .. If the sealing portion 30 is formed in this way, even if the individual packaging body 31 comes into contact with other articles and a peeling force is applied to the opening surface 26 of the packaging sheet 24, the packaging sheet 24 can be removed from the opening end 25. It becomes difficult to open unintentionally. Further, even if a part of the packaging sheet 24 is unintentionally opened from the opening end 25, it is less likely that the entire opening surface 26 is further opened. In FIG. 8, a part of the joint portion 31 constituting the seal portion 30 may extend in the front-rear direction y.

In FIG. 9, each joint portion 31 constituting the seal portion 30 is provided so as to extend in the width direction x or to be inclined to the side opposite to the opening end 25, and each seal portion 30 is provided. The absolute value of the average angle A1 with respect to the width direction x of the joint portion 31 of the first region 27 is larger than the absolute value of the average angle A2 with respect to the width direction x of the joint portion 31 of the second region 28, and the joint portion of the second region 28. The absolute value of the average angle A2 with respect to the width direction x of 31 is formed to be larger than the absolute value of the average angle A3 with respect to the width direction x of the joint portion 31 of the third region 29. If the sealing portion 30 is formed in this way, another article may be caught on the opening end 25 of the packaging sheet 24, and the opening end 25 opens (that is, the packaging sheet 24 having the opening end 25 inside thereof). Even if a force is applied in the direction away from the packaging sheet 24, the joint portion 31 can easily counter the force with a wide width, and it becomes difficult to release the joint between the packaging sheets 24. Further, even if a part of the packaging sheet 24 is unintentionally opened from the opening end 25, it is less likely that the bonding between the packaging sheets 24 in the sealing portion 30 is further released. In FIG. 9, a part of the joint portion 31 constituting the seal portion 30 may extend in the front-rear direction y.

In FIGS. 6 to 9, a plurality of joint portions 31 arranged in the longitudinal direction y are provided so that the extending direction gradually changes. In FIGS. 6 and 8, the width of each of the sealing portions 30 is such that in the first region 27 to the third region 29, the extending direction of the plurality of joint portions 31 arranged in the longitudinal direction y is closer to the opened end 25. It is formed so that the angle formed by the direction x becomes small. In FIGS. 7 and 9, in the first region 27 to the third region 29, the width of each of the seal portions 30 is such that the extending direction of the joint portions 31 arranged in the longitudinal direction y is closer to the opened end 25. It is formed so that the angle formed by the direction x is large. In the individual packaging body 21 shown in FIGS. 6 to 9, when the packaging sheet 24 is opened from the opening end 25, the opening surface 26 of the packaging sheet 24 can be easily opened smoothly without interruption.

In FIG. 10, as in FIG. 3B, the average angle A1 in the extending direction of the joint portion 31 in the first region 27 and the average angle A3 in the extending direction of the joining portion 31 in the third region 29 are the same. An example of the seal portion 30 formed in the second region 28 so that the average angle A2 of the joint portion 31 in the extending direction is different from these is shown. In FIG. 3B, each seal portion 30 is formed so that the extending directions of all the joint portions 31 are the same in each region of the first region 27, the second region 28, and the third region 29. However, in FIG. 10, in each region of the first region 27, the second region 28, and the third region 29, the joint portion 31 is provided so as to extend in multiple directions. Specifically, in each of the sealing portions 30, a plurality of joint portions 31 arranged in the longitudinal direction y are provided so that the extending direction gradually changes, and the angle of the joining portion 31 in the extending direction with respect to the width direction x is set. , The opening surface 26 is formed so as to be the largest in the central portion in the longitudinal direction y (that is, the central portion in the longitudinal direction y of the second region 28). Also in the individual packaging body 21 shown in FIG. 10, when the packaging sheet 24 is opened from the opening end 25, the opening surface 26 of the packaging sheet 24 can be easily opened smoothly without interruption.

11: Absorbable article 12: Top sheet 13: Back sheet 14: Absorber 21: Individual package (of absorbent article) 22: First main surface 23: Second main surface 24: Packaging sheet 25: Opened end 26: Opened surface 27: 1st area 28: 2nd area 29: 3rd area 30: Sealing part 31: Joint part 32: Sealing tape

Claims (8)

The absorbent article is an individual package of the absorbent article wrapped in a packaging sheet.
The absorbent article is folded in the longitudinal direction together with the packaging sheet, and an opening end of the packaging sheet is formed on the outer surface of the individual packaging body.
The individual package has a first main surface including the opening end and a second main surface on the opposite side thereof, and the packaging sheet is located on the first main surface side and includes an area including the opening end. The first region, the second region, and the third region defined by dividing into three equal parts in the longitudinal direction are provided in this order from the opening end side.
The individual package has a seal portion in which the packaging sheets are joined to each other at one end portion in the width direction and the other end portion, and the seal portion is configured such that a plurality of linear joint portions are arranged in the longitudinal direction. Being done
In the seal portion at one end and / or the other end in the width direction, the average angle A2 with respect to the width direction of the extension direction of the joint portion in the second region is the extension of the joint portion in the first region. An individual package of an absorbent article, characterized in that the average angle A1 with respect to the width direction of the direction is different from the average angle A3 with respect to the width direction of the extending direction of the joint portion in the third region. The individual package of an absorbent article according to claim 1, wherein the seal portion at one end in the width direction and the seal portion at the other end are formed substantially symmetrically with respect to the longitudinal direction. In the seal portion of one end portion and the other end portion in the width direction, each joint portion is provided so as to extend in the width direction, extend in the longitudinal direction, or extend inclined toward the opening end side. ,
The piece of absorbent article according to claim 1 or 2, wherein the absolute value of the average angle A1 is smaller than the absolute value of the average angle A2, and the absolute value of the average angle A2 is smaller than the absolute value of the average angle A3. Package. In the seal portion of one end portion and the other end portion in the width direction, each joint portion is provided so as to extend in the width direction, extend in the longitudinal direction, or extend inclined toward the opening end side. ,
The piece of the absorbent article according to claim 1 or 2, wherein the absolute value of the average angle A1 is larger than the absolute value of the average angle A2, and the absolute value of the average angle A2 is larger than the absolute value of the average angle A3. Package. In the seal portion at one end in the width direction and the seal portion at the other end, each joint extends in the width direction, extends in the longitudinal direction, or extends at an angle opposite to the opening end. Provided in
The piece of absorbent article according to claim 1 or 2, wherein the absolute value of the average angle A1 is smaller than the absolute value of the average angle A2, and the absolute value of the average angle A2 is smaller than the absolute value of the average angle A3. Package. In the seal portion at one end in the width direction and the seal portion at the other end, each joint extends in the width direction, extends in the longitudinal direction, or extends at an angle opposite to the opening end. Provided in
The piece of the absorbent article according to claim 1 or 2, wherein the absolute value of the average angle A1 is larger than the absolute value of the average angle A2, and the absolute value of the average angle A2 is larger than the absolute value of the average angle A3. Package. 3. Individual packaging of absorbent articles. 4. Individual packaging of absorbent articles.

Images