WO2021038875A1

WO2021038875A1 - Absorbent article

Info

Publication number: WO2021038875A1
Application number: PCT/JP2019/034284
Authority: WO
Inventors: 広嗣中島; 芳久渡部
Original assignee: ユニ・チャーム株式会社
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-03-04
Also published as: CN114206281A; CN114206281B

Abstract

Provided is an absorbent article (1) which is contained in a packaging material, has an up-down direction, a left-right direction, and a thickness direction that are orthogonal to one another, and includes a coated portion (R) which is coated with a plurality of microcapsules, the absorbent article (1) being characterized in that both end portions (S, S) in the left-right direction are folded inward in the left-right direction and inward in the thickness direction along a pair of left-right fold lines (SL) extending along the up-down direction, the absorbent article (1) is folded, skin-side face in, along an up-down fold line (CL) extending along the left-right direction, the coated portion (R) is provided on at least one end portion (S) of the end portions (S, S), and at least a part of the coated portion (R) is provided in a position not exposed from the absorbent article (1).

Description

Absorbent article

The present invention relates to an absorbent article.

Disposable diapers with an absorber that absorbs excrement are used not only in raising infants and nursing adults, but also in raising pets. Patent Document 1 describes an absorbent article that prevents the invasion of pests into the absorbent article by providing an insect repellent microcapsule in which a natural plant extract exhibiting an insect repellent effect is microencapsulated.

Special Table 2012-522618

However, as shown in Patent Document 1, by arranging the insect-proof microcapsules on the back sheet among the absorbent articles, the insect-proof microcapsules are damaged and absorbed during transportation in the packaged state contained in the packaging material. There was a risk that the natural plant extract would flow out before the sex article was worn, and the effect could not be exerted while the absorbent article was worn.

The present invention has been made in view of the above problems, and an object of the present invention is to reduce damage to microcapsules provided in an absorbent article in a packaged state.

The main invention for achieving the above object is an absorbent article housed in a packaging material, which has a vertical direction, a horizontal direction, and a thickness direction orthogonal to each other, and a plurality of microcapsules are coated. A coating portion is provided, and both side ends in the left-right direction are folded inside the left-right direction and inside the thickness direction by a pair of left-right fold lines along the up-down direction. The absorbent article is folded with the side surface of the skin inside at a vertical fold line along the direction, and the coating portion is provided at at least one side end portion of the both side end portions. The coated portion is an absorbent article characterized in that it is provided at a position not exposed from the absorbent article.
Other features of the present invention will be clarified by the description in this specification and the accompanying drawings.

According to the present invention, damage to the microcapsules provided on the diaper can be reduced in the packaged state.

FIG. 1 is a plan view of the skin side of the diaper 1 in an unfolded and stretched state. FIG. 2 is a non-skin side plan view of the diaper 1 in an unfolded and stretched state. FIG. 3A is a schematic view showing a state in which the diaper 1 shown in FIG. 1 is folded by the tape folding line TL. FIG. 3B is a schematic view showing a state in which the diaper 1 shown in FIG. 3A is folded along the left-right fold line SL. FIG. 4A is a schematic view showing a diaper 1 in a packaged state. FIG. 4B is a schematic cross-sectional view of the packaged diaper 1 shown by arrow YY in FIG. 4A. FIG. 5 is a perspective view of the disposable diaper package 50. FIG. 6 is an enlarged view of a portion X in FIG. FIG. 7 is a drawing showing a state in which the coated portion is viewed from the non-skin side surface in the thickness direction. FIG. 8 is a diagram illustrating a coating unit RX according to another embodiment. FIG. 9 is a diagram illustrating folding of the napkin 100.

The description of the present specification and the accompanying drawings will clarify at least the following matters.
An absorbent article housed in a packaging material, which has a vertical direction, a horizontal direction, and a thickness direction orthogonal to each other, and includes a coating portion coated with a plurality of microcapsules, along the vertical direction. The pair of left and right fold lines fold both end portions in the left and right direction inside the left and right direction and inside the thickness direction, respectively, and the up and down fold lines along the left and right direction absorb the absorption. The sex article is folded with the side surface of the skin inside, and the coating portion is provided on at least one side end portion of the both side ends, and at least a part of the coating portion is said. It is an absorbent article characterized in that it is provided at a position not exposed from the absorbent article.

According to such an absorbent article, in the packaged state, the coated portion is covered with the absorbent article, so that the microcapsules are damaged by contact with the packaging material or other absorbent articles. The fear can be reduced.

It is desirable that the microcapsules contain an insect repellent fragrance in such an absorbent article.

According to such an absorbent article, the effect of the insect repellent fragrance at the time of use is reduced by reducing the risk of damaging the microcapsules due to contact with the packaging material or other absorbent articles in the packaged state. It becomes easier to exert.

In such an absorbent article, the coated portion is also provided inside in the left-right direction from the one side end portion, and the micro per unit area coated on the one side end portion. It is desirable that the total weight of the capsules is greater than the total weight of the microcapsules per unit area coated inside the one side end.

According to such an absorbent article, an absorber is generally arranged inside in the left-right direction from one side end portion, and for microcapsules, per unit area of one side end portion. It is possible to reduce the possibility that the microcapsules inhibit the absorption of excrement as compared with the case where the total weight per unit area of the region inside one side end is larger than the total weight.

It is desirable that the coated portion of the absorbent article is provided on the seat member located on the non-skin side of the one side end portion in the worn state.

According to such an absorbent article, while reducing the risk of the microcapsules coming into direct contact with the wearer's skin, the microcapsules are more likely to burst in the wearing state, and the substance contained in the microcapsules in the wearing state is easily ruptured. It becomes easier to exert the effect.

In such an absorbent article, the one side end portion has a predetermined fiber density region having a predetermined fiber density, and the coating portion is provided in a region having a higher fiber density than the predetermined fiber density region. It is desirable that it is.

According to such an absorbent article, it is possible to reduce the possibility that the substance contained in the microcapsules is impregnated and the adhesive effect of the adhesive used in the absorbent article is deteriorated.

It is desirable that one of the side ends of the absorbent article has a fastening tape portion, and the coating portion is provided on the fastening tape portion.

According to such an absorbent article, the fastening tape portion is a part that can be easily grasped by hand when the absorbent article is attached, and the microcapsule can be broken when the absorbent article is attached. It becomes easier to exert the effect of the contained substance.

In such an absorbent article, the fastening tape portion is folded inward on the side surface of the skin by a tape folding line along the vertical direction, and the coating portion is the fastening tape portion in the left-right direction. It is desirable that the tape is provided in the tip side region on the tip side of the tape fold line.

According to such an absorbent article, the tip side region is a portion that is likely to be grasped by hand when the absorbent article is attached, so that the microcapsules can be more reliably broken during the attachment. , It becomes easier to exert the effect of the substance contained in the microcapsule in the wearing state.

It is desirable that the area of the coated portion provided in the tip side region of the absorbent article is at least half the area of the tip side region.

It is desirable that the coating portion of the absorbent article is provided at the tip portion of the fastening tape portion in the left-right direction.

According to such an absorbent article, the outermost end portion of the fastening tape portion in the left-right direction is a portion that is particularly likely to be grasped by hand when the absorbent article is attached, so that the fastening tape portion is more reliably attached. Since the microcapsules can be broken, the effect of the substance contained in the microcapsules can be easily exerted in the wearing state.

The absorbent article has an absorbent body that is folded with the skin side surface inside at the absorbent body folding line along the left-right direction, and the coated portion absorbs the absorbent article when viewed in the thickness direction. It is desirable to overlap with the body.

According to such an absorbent article, since the absorber is a member having a high cushioning property, the coated portion that overlaps with the absorber in the thickness direction in the packaged state is less likely to be affected by an external impact or the like. Therefore, it is possible to reduce the risk of accidentally damaging the microcapsules in the packaged state.

In such an absorbent article, one side absorbing portion of the absorber located on one side in the thickness direction from the absorber folding line overlaps with the coated portion when viewed in the thickness direction. It is desirable that the other side absorbing portion of the absorber located on the other side in the thickness direction from the absorber folding line does not overlap with the coated portion when viewed in the thickness direction. ..

According to such an absorbent article, in the packaged state, when viewed in the thickness direction, the coated portion overlaps with the absorption portion on one side, so that the influence of an external impact or the like is reduced and the thickness direction is reduced. As you can see, since the coated part does not overlap with the absorbing part on the other side, the coated part is arranged in the space where the absorber generated by the folded absorber does not exist, and the coated part is arranged in the thickness direction. The risk of crushing can be reduced.

It is desirable that all of the coated portions of the absorbent article are provided at positions not exposed from the absorbent article.

According to such an absorbent article, in the packaged state, the coated portion is covered with the absorbent article, so that the microcapsules are damaged by contact with the packaging material or other absorbent articles. The fear can be further reduced.

It is desirable that the coated portion is not provided on the other side end portion of the both side end portions of the absorbent article.

According to such an absorbent article, the risk of unnecessarily coating the microcapsules is reduced by providing the coating portion only on one side end that can more reliably break the microcapsules during mounting. be able to.

In such an absorbent article, the one side end portion includes a squeezed portion and a non-squeezed portion, and the total weight of the microcapsules per unit area coated on the non-squeezed portion is applied to the squeezed portion. It is desirable that it is larger than the total weight of the microcapsules per unit area coated.

According to such an absorbent article, the microcapsules fall off from the absorbent article by coating more on the non-squeezed portion where the microcapsules easily enter the fiber than on the pressed portion where the microcapsules easily enter the fiber. The fear can be reduced.

It is desirable that the coated portion of the absorbent article has a plurality of regions in which the total weight of the microcapsules per unit area is different.

According to such an absorbent article, it becomes easier to visually recognize the coated portion while reducing the coating amount of the microcapsules.

=== Embodiment ===
As the absorbent article of the present invention, an embodiment will be described by taking a so-called tape-type deployable disposable diaper as an example. However, the present invention is not limited to this, and the application is also applicable to absorbent articles such as pants-type disposable diapers, urine absorbing pads, sanitary napkins, pantyliners, and animal disposable diapers.

=== About the configuration of disposable diaper 1 ===
The disposable diaper 1 is a so-called tape type (open type) deployable disposable diaper (hereinafter, also simply referred to as "diaper 1"). Although the diaper 1 is described as a disposable diaper for infants, it may be a disposable diaper for adults.

FIG. 1 is a plan view of the skin side of the diaper 1 in the unfolded state and the stretched state. FIG. 2 is a non-skin side plan view of the diaper 1 in an unfolded and stretched state. The unfolded state of the diaper 1 means a state in which the entire diaper 1 is unfolded in a plane. The stretched state of the diaper 1 is a state in which the wrinkles formed on the diaper 1 are stretched to the extent that they are substantially invisible, and the dimensions of each member (for example, the top sheet 3 described later) constituting the diaper 1 are large. The diaper 1 is in a stretched state until the length of the member is equal to or close to the size of the single member. 1 and 2 show a state in which the diaper 1 is taken out from the packaging material (not shown), unfolded, and stretched.

In the unfolded and extended state shown in FIG. 1 and the like, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction orthogonal to each other. The "longitudinal direction" in the unfolded and extended state corresponds to the "vertical direction" in the natural state and the packaged state. The thickness direction is the direction in which the members constituting the diaper 1 are laminated, and the side in contact with the wearer is referred to as the "skin side" and the opposite side is referred to as the "non-skin side".

In FIG. 1 and the like, the center line CC is the center in the left-right direction, and the diaper 1 has a shape symmetrical with respect to the center line CC. The center line CL is the center in the longitudinal direction, and has a ventral portion 1A on the ventral side of the center line CL and a dorsal portion 1B on the dorsal side of the center line CL. In diaper 1, the ventral portion 1A covers the ventral side of the wearer and the dorsal portion 1B covers the dorsal side of the wearer.

The diaper 1 has an absorber 2 that absorbs excrement such as urine, a liquid-permeable top sheet 3 that covers the absorber 2 from the skin side, and a liquid-impermeable leak-proof that covers the absorber 2 from the non-skin side. It has a sheet 4, a back sheet 5 that covers the leak-proof sheet 4 from the non-skin side to form the outer shape of the diaper 1, and a pair of side sheets 6 provided side by side in the width direction on the top sheet 3. ing.

The top sheet 3 can be an air-through non-woven fabric or the like, the leak-proof sheet 4 can be a resin film such as a polyethylene film, and the back sheet 5 can be a flexible sheet such as a spunbonded non-woven fabric. For the top sheet 3 and the back sheet 5, select from SMS non-woven fabric (spun bond / melt blown / spun bond non-woven fabric), spun bond non-woven fabric, air-through non-woven fabric, plastic sheet, perforated plastic sheet and their laminated sheets, respectively. May be used.

The absorber 2 has a rectangular shape that is long in the longitudinal direction in a plan view, and has an absorbent core (not shown) and a core wrap sheet (not shown) that covers the outer peripheral surface of the absorbent core. The absorbent core is formed by molding a liquid absorbent material into a predetermined shape, and has a substantially hourglass shape in a plan view. Examples of the liquid-absorbent material include those in which a liquid-absorbent fiber such as pulp fiber contains a highly absorbent polymer (so-called SAP). Examples of the core wrap sheet include a liquid-permeable tissue and a non-woven fabric, but the absorber may not have the core wrap sheet. The absorbent core may have a rectangular shape such as a rectangle as well as a shape confined inward in the left-right direction such as a substantially hourglass shape.

Further, the diaper 1 is provided with elastic members 61 (for example, rubber threads) that can be expanded and contracted in the longitudinal direction together with the side sheets 6 on both sides in the width direction to form a pair of three-dimensional gathers as a leak-proof wall. The elastic member 61 is fixed to the side sheet 6 in a state of being extended in the longitudinal direction. By providing three-dimensional gathers, the risk of excrement leaking from the left and right directions of the diaper 1 is reduced.

Further, a pair of elastic leg circumference elastic members 7 (for example,) that can be expanded and contracted in the longitudinal direction on both left and right sides of the diaper 1 so as to be along the wearer's leg circumference and mainly at positions corresponding to the wearer's inseam. Thread rubber) is provided. Specifically, as shown in FIG. 1, the leg circumference elastic member 7 is provided outside the elastic member 61 for three-dimensional gathering in the left-right direction in the expanded and extended state. The leg circumference elastic member 7 is fixed to the non-skin side surface of the side sheet 6 in a longitudinal direction. Therefore, in the wearing state, each side portion of the diaper 1 in the left-right direction fits around the wearer's leg, and leakage of excrement is suppressed.

The number, shape, material, etc. of the elastic member 61 and the leg circumference elastic member 7 are not limited to those shown in FIG. For example, the number of elastic members 61 and the number of elastic members 7 around the legs can be arbitrarily set, and from the elastic polyurethane elastic fibers in the form of threads, the elastic films formed by melting the thermoplastic elastomer resin, and the elastic fibers in the form of films. It may be an elastic non-woven fabric.

The outer shape of the unfolded diaper 1 (FIGS. 1 and 2) is approximately an hourglass shape, and the ventral portion 1A and the dorsal portion 1B are respectively larger than the central portion (lower crotch when worn) in the longitudinal direction. It has a pair of side flaps 20, 30 extending to both outer sides in the left-right direction. The side flaps 20 and 30 are formed by a side sheet 6 and a back sheet 5. Further, a fastening tape portion 40 is fixed to each outer end portion in the left-right direction of the pair of side flaps 30 included in the back side portion 1B.

The fastening tape portion 40 has a tape base material 41, a hook material 42, and a fixing portion 43. The tape base material 41 is, for example, a member of a green non-woven fabric, and has a substantially rectangular shape long in the left-right direction. As shown in FIG. 2, the tape base material 41 is provided with a plurality of substantially rectangular pressing portions 40E in a staggered manner on the tape base material 41. In FIG. 1, the pressing portion 40E is omitted for convenience. By providing the pressing portion 40E on the tape base material 41, the fibers of the non-woven fabric of the tape base material 41 are compacted to maintain the tape shape, and the rigidity of the tape base material 41 is increased so that the diaper 1 is worn. A user such as a guardian (hereinafter, also simply referred to as a “user”) or the like who intends to use the fastener 1 can easily grasp the fastening tape portion 40, and can more easily attach the diaper 1. The hook material 42 (for example, the male member of the hook-and-loop fastener) is provided on the skin side surface of the tape base material 41 extending outward in the left-right direction from the side flap 30.

In order to put the diaper 1 in the wearing state, that is, in order for the wearer to put on the diaper 1, the user or the wearer himself applies the unfolded diaper 1 to the wearer, and the abbreviation in the longitudinal direction. Fold it in half at the center (around the center line CL), and fold the pair of side flaps 30 on the back side 1B side inward in the left-right direction. Then, the hook material 42 provided on the fastening tape portion 40 is locked to the non-skin side surface of the ventral side portion 1A. In the diaper 1, the hook material 42 can be directly locked to the back sheet 5 by using a non-woven fabric for the back sheet 5. However, the present invention is not limited to this, and a member such as a female member of the hook-and-loop fastener to which the hook member 42 can be locked may be provided separately from the back sheet 5. Further, instead of the hook material 42, for example, an adhesive tape may be provided on the fastening tape portion 40.

Diaper 1 has a coated portion coated with microcapsules MC containing an insect repellent fragrance. The details of the coating section will be described later.

Insect repellent is a repellent (insect repellent) against pests such as mosquitoes, silkworms, chironomids, and flies, and is a fragrance for synthetic compounds and natural plant extracts. For example, citronellal, DEET (N, N-diethyl-3-methylbenzamide), sesquiterpene, ethyl ethylbutylacetylaminopropionate, picaridin, pyrethroid, cinnamon, rosemary, lavender, peppermint, eucalyptus and the like can be used. The insect repellent fragrance can be selected according to the target pest and the person to be worn.

The microcapsule MC has a diameter of 1 to 1,000 μm and means a capsule having a space containing a core material (in this embodiment, an insect repellent fragrance). The external shape of the microcapsule MC is not particularly limited as long as it can contain the core material and control the release of the core material, and examples thereof include an external shape such as a spherical shape and an irregular shape. Further, the microcapsule MC may be a mononuclear type having one space for holding the core material or a polynuclear type having a plurality of spaces for holding the core material. Examples of the shape of the space include a spherical shape, an irregular shape, and the like.

In the microcapsule MC, the film containing the core material (also called the wall material, etc.) changes due to physical or chemical stimuli, and the contained components are released. Examples of the physical stimulus include applying heat, physical pressure, physical shock, vibration, light, and the like to the film of the microcapsule MC. Examples of the chemical stimulus include contact between a liquid (aqueous solution) such as a body fluid and the film of the microcapsule MC.

By applying these physical or chemical stimuli to the film of the microcapsule MC, deterioration, denaturation, softening, porosification, dissolution, disintegration, decomposition, etc. of the film can occur. As a result, the release of the core material in the microcapsule MC can be started, or if the core material is gradually released before stimulation, the degree of the release can be accelerated.

As the material of the microcapsule MC, an inorganic material or an organic material can be used, and for example, saccharides, monosaccharides (for example, glucose), disaccharides (for example, sucrose), polysaccharides (for example, dextrin, etc.) can be used. Glucomannan, sodium alginate, water-soluble starch, etc.), gelatin, gelatin / Arabic rubber, water-soluble polymer (for example, polyvinyl alcohol, polyvinyl acetate, etc.), melamine resin, urea / formalin resin, urethane resin, polystyrene, ethyl cellulose, polyamide , Polyacrylic acid, silicone resin, carboxymethyl cellulose and the like.

It is preferable to select the material of the microcapsule MC according to the physical characteristics of the core material and the environment and conditions in which the release of the core material is desired. In the diaper 1 of the present embodiment, microcapsules made of urethane resin having a film thickness of 2 μm are used as the microcapsule MC, and citronellal is used as the insect repellent fragrance. This citronellal has a medicinal herbal aroma and is also a scent that easily impresses with its insect repellent effect. In particular, as the capsule, it is preferable to use a capsule that disintegrates by a physical stimulus such as urethane resin.

The coated part is coated with microcapsules together with a predetermined solvent. The microcapsule MC is preferably insoluble in the solvent and preferably does not swell in the solvent which is the dispersion medium of the microcapsule MC. This is from the viewpoint of protecting the core material contained therein. The solvent for dispersing the microcapsules, together with the insect repellent fragrance, may be referred to as the first solvent in order to distinguish it from the second solvent that can be encapsulated in the microcapsules.

The microcapsule MC has a solvent solubility of preferably 1.0 g or less, more preferably 0.5 g or less, and further preferably 0.1 g or less with respect to 100 g of the solvent which is the dispersion medium of the microcapsules at 25 ° C. .. The solvent solubility was such that 1.0 g (0.5 g, 0.1 g, etc.) of the sample was added to 100 g of the solvent at 25 ° C., allowed to stand for 24 hours, and lightly stirred as necessary, and then the sample was prepared. It is evaluated by visually evaluating whether or not it has dissolved.

The solvent shall be one that retains the insect repellent fragrance while being encapsulated in the microcapsules and retains the functional component, that is, one that dissolves the functional component but does not dissolve or swell the microcapsules. Is preferable.

The amount of insect repellent fragrance released can be changed depending on the amount, its vapor pressure, the degree of damage of the microcapsules to physical stimuli, the thickness of the microcapsule layer, the particle size of the microcapsules, and the like.

=== About the packaging condition of diaper 1 ===
The unfolded and stretched diaper 1 shown in FIGS. 1 and 2 can be folded into the packaged diaper 1 shown in FIG. 4A by folding in the order shown in FIGS. 3A and 3B. FIG. 3A is a schematic view showing a state in which the diaper 1 shown in FIG. 1 is folded by the tape folding line TL. FIG. 3B is a schematic view showing a state in which the diaper 1 shown in FIG. 3A is folded along the left-right fold line SL. FIG. 4 is a schematic view showing the diaper 1 in the packaged state. FIG. 5 is a perspective view of the disposable diaper package 50.

First, the tape folding line TL of the fastening tape portion 40 of the unfolded and stretched diaper 1 is folded with the skin side surface (the surface provided with the hook material 42) inward, and the folded fastening tape portion 40 is not removed from the skin side. By providing a plurality of temporary fastening pressing portions F toward the skin side (from the non-skin side surface of the fastening tape portion 40), the state shown in FIG. 3A is obtained. The tape fold line TL is a fold line along the longitudinal direction (vertical direction) provided outside the side flap 20 in the left-right direction. The temporary fastening pressing portion F is provided to maintain the folded state of the fastening tape portion 40 so that the fastening tape portion 40 can be brought into the unfolded state shown in FIGS. 1 and 2 when worn again. , It is a pressing part provided as a temporary fastening. The temporary fastening pressing portion F is a circular pressing portion and is arranged in a staggered pattern.

Subsequently, from the state shown in FIG. 3A, the left and right fold lines SL of the diaper 1 are used to fold the side end portions S in the left and right directions inward in the left and right directions and inward in the thickness direction (skin side). The state shown in 3B is obtained. The left-right fold line SL is a pair of fold lines along the vertical direction. In the present embodiment, the left-right fold line SL is provided outside the absorber 2 and inside the top sheet 3 and the side flap 30 in the left-right direction, respectively. In FIGS. 1 and 2, the region of the side end portion S is shown by a shaded portion.

Then, from the state shown in FIG. 3B, the state shown in FIG. 4 is obtained by folding the diaper 1 with the side of the skin inside at the vertical fold line CL. The vertical fold line CL is a fold line along the left-right direction, and is also a center line CL which is the center in the longitudinal direction. The packaged diaper 1 shown in FIG. 4 is also the state of the diaper 1 housed in the packaging material 51 shown in FIG. That is, the diaper 1 shown in FIG. 4 is also a diaper 1 in a state in which the diaper 1 housed in the packaging material 51 is taken out. The package 50 is a product in which a plurality of diapers 1 are housed inside a packaging material 51 having a handle 52, and is in a packaging state sealed by the packaging material 51. Note that FIG. 5 shows a package 50 including a plurality of diapers 1, but the present invention is not limited to this. For example, it may be a package in which one absorbent article is contained in one packaging material.

=== About the coating department ===
The coating portion can be provided on the entire skin side surface and non-skin side surface of the side end portion S, or a part of the side end portion S. The side end S is a region suitable for coating microcapsules. The side end portion S is a region outside the left-right fold line SL of the diaper 1 in the left-right direction, and specifically, is a region outside the left-right fold line SL including the fastening tape portion 40 in the left-right direction. Depending on the effect of the substance contained in the microcapsule MC (insect repellent effect in this embodiment), coating portions may be provided on the side end portions S and S on both sides in the left-right direction. Further, the coating portion may be provided only on one side end portion S in the left-right direction. By providing the coating portion only on one side end portion S in the left-right direction, the risk of coating the microcapsules more than necessary can be reduced, and the diaper 1 can be manufactured at a lower cost.

Further, the back side portion 1B of the diaper 1 in the packaged state may be in a packaged state in which the absorber 2, the other side end portion S, and the one side end portion S are overlapped when viewed from the non-skin side in the thickness direction. Good. Specifically, the other side end S of the unfolded diaper 1 in FIG. 1 is folded with the left and right fold lines SL on the skin side side, and then one side end S is folded on the left and right fold lines SL on the skin side surface. May be in a packaged state in which the diaper is folded so as to cover the non-skin side surface of the other side end portion S, and then folded along the vertical fold line CL. In the case of such a packaged state, when the diaper 1 is used and the diaper 1 is changed from the packaged state to the unfolded state, the fold is first unfolded at the vertical fold line CL, and then the left and right folds of one side end portion S are performed. Unfold the fold on line SL. That is, since the coating portion is provided on one side end portion S, the wearer or the user can use the one side end portion S at an earlier stage before the diaper 1 is fully deployed. You can recognize the existence. Further, when the side end portion S is developed by one of the left and right folding lines SL, a part of the side end portion S is grasped, so that the microcapsule MC of the grasped portion is damaged to exert the effect of the insect repellent fragrance. It will be easier. In this way, the wearer or user can recognize the presence of the microcapsule MC and the effect of the insect repellent fragrance at an earlier stage in the process of changing from the packaged state to the unfolded state.

Further, as shown in FIG. 4A, since the packaged diaper 1 has a side end portion S that is not exposed from the diaper 1, the coated portion provided on the entire side end portion S or a part thereof may be formed. It will not be exposed from diaper 1. Both side end portions S are sandwiched from the thickness direction (front-back direction) in a region inside the pair of side end portions S in the left-right direction by folding at the pair of left-right fold lines SL and the top-down fold line CL of the diaper 1. It is covered so as to be located inside the diaper 1 in the packaged state, and the coating portion is provided inside the diaper 1 in the packaged state. It is more preferable that the entire area of the coated portion is provided at a position not exposed from the packaged diaper 1.

If the coated portion is not exposed from the diaper 1, in the package 50 as shown in FIG. 5, a plurality of diapers 1 may come into contact with each other and damage the microcapsules of each coated portion. It is possible to reduce the possibility that the coating portion and the packaging material 51 come into contact with each other to damage the microcapsules and the substance (insect repellent fragrance) contained in the microcapsules may flow out. Therefore, the possibility that the microcapsules are damaged more than necessary in the packaged state and the insect repellent effect cannot be exhibited when worn is reduced, and the insect repellent effect can be more easily exhibited when worn. Further, in the manufacturing process of the package 50, before the diaper 1 is housed in the packaging material 51, the coated portion is covered with the diaper 1 and can be transported without being exposed from the diaper 1. Therefore, the transport belt It is possible to reduce the risk that the microcapsules will be damaged by contact with the coated portion.

In addition, in FIGS. 1 and 2, the skin side surface and the non-skin side surface of the side end portion S are defined as regions suitable for coating the microcapsules, but the coating portion is provided on the non-skin side surface of the side end portion S. Is preferable. Further, it is more preferable to provide the coated portion on the sheet member (the non-skin side surface of the back sheet 5 or the tape base material 41) located on the most non-skin side in the wearing state. The seat member located on the non-skin side in the wearing state is a part of the diaper 1 that has a lot of contact from the outside during and during wearing. Therefore, the microcapsules of the packaged diaper 1 are prevented from being damaged so that the insect repellent fragrance does not exert the insect repellent effect, and on the other hand, the microcapsules are easily damaged during wearing or wearing, and the insect repellent is repelled. It becomes easier to exert the effect of the fragrance.

Where it is preferable that the coating portion is provided at the side end portion S, the coating portion may be provided inside the side end portion S in the left-right direction. For example, the microcapsules are coated on the inside of the side end portion S and the side end portion S in the left-right direction, or in the packaging state shown in FIG. 4A, the side end portion is attached to the absorber 2 or the like which overlaps and contacts in the thickness direction. The microcapsules coated on S may be transferred. In such a case, the total weight of the microcapsules per unit area coated on the coated portion of the side end portion S is the microcapsules per unit area coated on the coated portion inside the side end portion S. It is preferably larger than the total weight of.

Generally, the absorber 2 is arranged inside the side end portion S in the left-right direction. When the microcapsules are applied to the absorber 2, the undamaged microcapsules become obstacles, hindering the absorption of excrement by the absorber 2, and repelling insects flowing out from the damaged microcapsules. The fragrance may be absorbed by the absorber 2, and the insect repellent fragrance may not be fully effective, or the absorption of excrement by the absorber 2 may be reduced. On the other hand, the total weight of the microcapsules per unit area of the coated portion coated on the side end portion S is the microcapsules per unit area of the coated portion coated inside the side end portion S. By making it larger than the total weight of the side end portion S, the total weight of the microcapsules per unit area of the coated portion coated on the side end portion S can be changed to the unit area of the coated portion coated on the inside of the side end portion S. It is possible to reduce the risk that the microcapsules interfere with the absorption of excrement and the effect of the insect repellent fragrance is reduced as compared with the case where the weight is smaller than the total weight of the microcapsules per unit.

The total weight of microcapsules per unit area can be measured by a well-known method. For example, sample pieces are created by cutting out the corresponding area by a unit area, and the weight of each sample piece is measured. At this time, the weight of the sheet member coated in advance is measured, and the weight of the sheet member is reduced from the weight of each sample piece. By comparing the weights of the sample pieces obtained by subtracting the weights of the sheet members, it is possible to compare the total weight of the microcapsules per unit area. In comparing the magnitude of the total weight of the microcapsules per unit area, the weight of the solvent with respect to the total weight of the microcapsules per unit area is determined for a predetermined solvent (first solvent) to be coated together with the microcapsules. Since the ratio of the weight of the solvent to the total weight of the microcapsules per unit area is substantially constant, the weight of the solvent to the total weight of the microcapsules per unit area can be calculated in advance to per unit area. The total weight of microcapsules can be compared more accurately. Hereinafter, the comparison of the total weight of the microcapsules per unit area can be performed in the same manner.

Specifically, the coating section R of the diaper 1 of the present embodiment will be described. FIG. 6 is an enlarged view of a portion X in FIG. As shown in FIG. 6, the diaper 1 of the present embodiment has a coating portion on the non-skin side surface of the fastening tape portion 40 of the side end portion S, and in the tip side region Q which is the tip end side of the tape fold line TL. R is provided. The coating portion R is applied in a plane shape to the tape base material 41 on which a plurality of pressing portions 40E are formed in advance. The coating pattern of the coating portion R is not limited to this. For example, it may be applied in a planar shape, a linear shape, a spiral shape, a Z shape, a linear shape, a dot shape, or the like. Further, it is preferable that the tape base material 41 has hydrophilicity so that the microcapsules MC are easily entangled with the fibers of the non-woven fabric 45 of the tape base material 41 of the fastening tape portion 40. The coating portion R is coated with microcapsules so that the total weight of the microcapsules per unit area is substantially uniform. The tape base material 41 of the diaper 1 is green, while the coated portion R coated on the tape base material 41 is pale white due to the microcapsules and the solvent. Therefore, the wearer or the user can easily recognize the existence of the coating portion R by providing the coating portion R on the fastening tape portion 40.

The fastening tape portion 40 is a portion of the side end portion S that is likely to be grasped by hand when worn. Therefore, when the microcapsule coated on the fastening tape portion 40 is to be worn from now on, the microcapsule coated on the fastening tape portion 40 is grasped and damaged by hand to allow the insect repellent fragrance in the microcapsule to flow out. It can be in a state where the effect is exhibited.

FIG. 7 is a drawing showing a state in which the coated portion R is viewed from the non-skin side surface in the thickness direction. As shown in FIG. 7, each microcapsule MC is spherical and has an insect repellent fragrance inside. The microcapsules MC coated on the fastening tape portion 40 each have a non-uniform size and are arranged so as to be entwined with the non-woven fabric 45. The microcapsule MC of the diaper 1 is a spherical capsule having irregular sizes, but is not necessarily limited to this. For example, the size may be uniform, and the shape may be any shape such as an ellipse or a rectangle.

As shown in FIG. 6, it is preferable to provide the coating portion R in the tip side region Q on the tip side of the tape folding line TL in the fastening tape portion 40. More preferably, it is provided at the tip portion q in the left-right direction of the fastening tape 40. The tip side region Q and the tip portion q of the fastening tape portion 40 are portions that are likely to be grasped by the wearer or the user when the diaper 1 is worn. Therefore, when the microcapsules are more reliably attached, the microcapsules are easily damaged so that the wearing state is in a state in which the effect of the insect repellent fragrance in the microcapsules is exerted. The tip portion q is a region from the tip of the tape member 40 to the inside by 5 mm in the left-right direction.

It is preferable that the coating portion R provided in the tip side region Q does not overlap with the tape folding line TL. Since the tape base material 41 is bent in the tape fold line TL, the fibers of the tape base material 41 are easily crushed at the portion overlapping with the tape fold line TL due to the bending, and the microcapsules are easily damaged. Therefore, by providing the coating portion R in the tip side region Q on the tip side of the tape fold line TL without overlapping with the tape fold line TL, the risk of having damaged microcapsules in the manufacturing process or the packaging state is reduced. In the wearing state, the effect of the insect repellent fragrance in the microcapsules can be easily exerted.

Further, it is preferable that the area of the coating portion R provided in the tip side region Q is at least half the area of the tip side region Q. Since the tip side region Q is likely to be grasped by hand when worn, by setting the area of the coated portion R to more than half the area of the tip side region Q, the microcapsules can be more reliably attached when worn. Can be damaged. This makes it easier for the insect repellent fragrance in the microcapsules to exert its effect when worn.

Further, the fastening tape portion 40 is a portion of the diaper 1 in which the fiber density of the non-woven fabric is particularly high. Of the one side end portion S, the region adjacent to the fastening tape portion 40 in the left-right direction is, for example, a predetermined fiber density region Z having a fiber density of a predetermined non-woven fabric. The fiber density of the non-woven fabric of the fastening tape portion 40 is higher than the fiber density of the non-woven fabric in the predetermined fiber density region Z. By providing the coating portion R in the region where the fiber density of the non-woven fabric is higher in this way, even if the microcapsules are damaged and the contained insect repellent fragrance flows out, the tape base material 41 can be contained. It is easy to stay, and it is possible to reduce the risk of reducing the adhesive effect of the adhesive by impregnating the adhesives that adhere each member of the diaper 1.

As shown in FIG. 6, of the one side end portion S, the fastening tape portion 40 includes a plurality of pressing portions 40E provided in a staggered manner over substantially the entire area of the tape base material 41. A non-squeezed portion is provided between the compressed portions 40E adjacent to each other in the vertical direction and the horizontal direction. That is, the pressed portion 40E is a concave portion, and the non-squeezed portion is a convex portion.

It is preferable that the total weight of the microcapsules per unit area coated on the non-squeezed portion R of the coated portion R is larger than the total weight of the microcapsules per unit area coated on the pressed portion 40E. In the squeezed portion 40E, since the fibers of the non-woven fabric are compacted by squeezing, the gap between the fibers is small, and the coated microcapsules are not easily entangled with the fibers of the non-woven fabric. Therefore, the squeezed portion 40E tends to be in a state where the microcapsules are merely placed on the surface of the squeezed portion 40E, and the coated microcapsules may fall off each time the diaper 1 is moved. On the other hand, the microcapsules easily enter the fibers of the tape base material 41 in the non-squeezed portion. Therefore, the total weight of the microcapsules per unit area coated on the non-squeezed portion is made larger than the total weight of the microcapsules per unit area coated on the squeezed portion 40E, so that the microcapsules fall off from the diaper 1. The number of capsules can be further reduced. Then, when worn, the effect of the insect repellent fragrance contained in the microcapsules can be more easily exerted.

In the packaged state, it is preferable that the coating portion R overlaps with the absorber 2 when the diaper 1 is viewed in the thickness direction. FIG. 4B is a schematic cross-sectional view of the packaged diaper 1 shown by arrow YY in FIG. 4A. As shown in FIG. 4A, among the vertical fold lines CL, the fold line obtained by folding the absorber 2 with the side surface of the skin inside is the absorber fold line 2L. The coating portion R of the diaper 1 is provided on the non-skin side surface of the fastening tape portion 40. Therefore, as shown in FIG. 4B, in the packaged state, the fastening tape portion 40 and the absorber 2 overlap each other in the thickness direction, so that the coating portion R overlaps with the absorber 2. The absorber 2 is a member having a particularly high cushioning property among the diapers 1. Therefore, the coated portion R that overlaps with the absorber 2 tends to be protected by the absorber 2 even when it is affected by an impact from the outside in the packaged state. As a result, the risk of damaging the microcapsules in the packaged state can be reduced.

Further, as shown in FIG. 4B, the ventral absorption portion (one side absorption portion) 2A on the ventral side (one side in the thickness direction) of the absorber folding line 2L is referred to as the coating portion R when viewed in the thickness direction. It is more likely that the dorsal absorption part (the other side absorption part) 2B on the back side (the other side in the thickness direction) from the absorber folding line 2L does not overlap with the coating part R when viewed in the thickness direction. preferable. In the packaged state of the diaper 1, the coated portion R that overlaps with the ventral absorption portion 2A has the ventral absorption portion 2A as a cushion even when affected by an external impact or the like, and reduces the influence of the impact or the like. be able to. On the other hand, since the coating portion R does not overlap with the back side absorbing portion 2B, the portion where the coating portion R is provided is provided with a space in the thickness direction by the thickness of the back side absorbing portion 2B. It has become. Therefore, even when a force is applied to the packaged diaper 1 in the thickness direction, the risk that the coated portion R is crushed in the thickness direction can be reduced.

=== Other embodiments ===
The above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified or improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

The coated portion R of the above-described embodiment was coated with microcapsules so that the total weight of the microcapsules per unit area was substantially uniform, but the present invention is not limited to this. As shown in FIG. 8, the coated portion RX may have a plurality of regions in which the total weight of the microcapsules per unit area is different. FIG. 8 is a diagram illustrating a coating unit RX according to another embodiment. In FIG. 8, the pressing portion 40E is omitted. The coating unit RX has a plurality of regions R1 having a large total weight of microcapsules per unit area and a plurality of regions R2 having a smaller total weight of microcapsules per unit area than the region R1. In the coating unit RX, the areas R1, the area R2, the area R1, the area R2, ... Are arranged in this order from one side in the left-right direction. The region R2 shown in FIG. 8 is a region not coated with microcapsules, but may have a total weight of microcapsules per unit area different from that of region R1. As a result, when the coating portion RX is provided in the colored portion such as the green fastening tape portion 40, it becomes easy for the wearer or the user to recognize the existence of the coating portion RX. Further, the amount of coating can be reduced as compared with the case where the microcapsules are coated over the entire area of the coating portion RX.

In the above-described embodiment, the fastening tape portion 40 is provided as a member different from the back sheet 5 and the side sheet 6, but the present invention is not limited to this. For example, the back sheet 5 and the side sheet 6 may be used to form the fastening tape portion 40.

In the above-described embodiment, the coating portion is provided on the tape-type deployable disposable diaper, but the present invention is not limited to this. For example, as shown in FIG. 9, the sanitary napkin may be provided with a coating portion. FIG. 9 is a diagram illustrating folding of the napkin 100. The napkin 100 has a longitudinal direction and a left-right direction orthogonal to the longitudinal direction. The longitudinal direction of the napkin 100 corresponds to the vertical direction of the diaper 1 described above. The napkin 100 is packaged with the packaging material 120 to become the packaging body 150. The package 150 shown in FIG. 9D is a napkin 100 in a packaged state.

First, as shown in FIG. 9B, the napkin 100 shown in FIG. 9A is placed on the packaging material 120 in a state in which the side surface of the skin is folded inward along a pair of left and right folding lines F0 along the longitudinal direction. Subsequently, as shown in FIGS. 9C and 9D, the side surface of the skin is folded inward along the vertical fold line F1 and the vertical fold line F2, respectively, and fastened with the seal 121 to form the package 150.

Also in the napkin 100, the side end portion s, which is an outer region in the left-right direction from the left-right fold line F0, is a region suitable for coating microcapsules. As shown in FIGS. 9B to 9D, the side end portion s becomes a region not exposed from the napkin 100 as the package 150 is formed. Therefore, the microcapsules coated on the entire side end portion s or a part of the side end portion s are covered with the folded napkin 100, and the packaged napkin 100 is the packaging material 120. It is possible to reduce the possibility that the microcapsules will be damaged due to contact with, contact with another package 150, or other external impact. This reduces the risk that the microcapsules will be damaged more than necessary in the packaged state and the insect repellent effect cannot be exerted when worn, and the insect repellent effect can be more easily exerted when worn.

In the above-described embodiment, the microcapsules contain an insect repellent fragrance having a herbal fragrance, but the present invention is not limited to this. Microcapsules are provided with a warming agent having a warming component having a predetermined scent, a cold feeling agent having a cold feeling component, a fragrance having an aromatic component, a deodorant having a deodorant component, and an antibacterial function. It may contain a substance having a well-known functional ingredient such as a provided antibacterial agent and a skin care agent containing a skin care ingredient.

1 diaper (deployable disposable diaper, tape-type disposable diaper, disposable diaper), 1A ventral side, 1B back side, 2 absorber, 3 top sheet, 4 leak-proof sheet, 5 back sheet, 6 side sheet, 7 legs Rotating elastic member, 20 side flap, 30 side flap, 40 fastening tape part, 41 tape base material, 40E pressing part, 42 hook material, 43 fixing part, 50 package, 51 packaging material, 61 elastic member, F temporary fastening pressing part , MC microcapsules, M1 processing traces, M2 processing traces (tips), M3 processing traces, P1 processing traces, P2 processing traces, P3 processing traces, P4 processing traces, DC damaged capsules, NC non-damaged capsules, Q tip side area , R coating part, S side end

Claims

An absorbent article contained in a packaging material
It has a vertical direction, a horizontal direction, and a thickness direction that are orthogonal to each other.
Equipped with a coating section coated with multiple microcapsules
A pair of left and right fold lines along the vertical direction are folded at both side ends in the left and right direction, respectively, inside the left and right direction and inside the thickness direction.
The absorbent article is folded with the side surface of the skin inside at the vertical fold line along the left-right direction.
The coating portion is provided at at least one side end portion of the both side end portions.
An absorbent article, characterized in that at least a part of the coated portion is provided at a position not exposed from the absorbent article.
The absorbent article according to claim 1.
An absorbable article, characterized in that the microcapsules contain an insect repellent fragrance.
The absorbent article according to claim 1 or 2.
The coating portion is also provided on the inner side in the left-right direction from the one side end portion.
The total weight of the microcapsules per unit area coated on one side end is
An absorbent article characterized in that it is greater than the total weight of the microcapsules per unit area coated inside the one side end.
The absorbent article according to any one of claims 1 to 3.
An absorbent article characterized in that the coated portion is provided on a sheet member located on the non-skin side of the one side end portion in a worn state.
The absorbent article according to any one of claims 1 to 4.
The one side end has a predetermined fiber density region with a predetermined fiber density.
The coated portion is an absorbent article characterized in that the coated portion is provided in a region having a fiber density higher than the predetermined fiber density region.
The absorbent article according to any one of claims 1 to 5.
The one side end portion has a fastening tape portion and
The coating portion is an absorbent article, which is provided on the fastening tape portion.
The absorbent article according to claim 6.
The fastening tape portion is folded inward on the side surface of the skin by a tape folding line along the vertical direction.
The absorbent article, characterized in that the coating portion is provided in the tip side region on the tip end side of the tape folding line of the fastening tape portion in the left-right direction.
The absorbent article according to claim 7.
An absorbent article characterized in that the area of the coated portion provided in the tip side region is at least half the area of the tip side region.
The absorbent article according to any one of claims 6 to 8.
An absorbent article characterized in that the coating portion is provided at a tip portion of the fastening tape portion in the left-right direction.
The absorbent article according to any one of claims 1 to 9.
It has an absorber that is folded with the side of the skin inside at the absorber fold line along the left-right direction.
An absorbent article characterized in that the coated portion overlaps with the absorber when viewed in the thickness direction.
The absorbent article according to claim 10.
Among the absorbers, one side absorbing portion located on one side in the thickness direction from the absorber folding line overlaps with the coated portion when viewed in the thickness direction.
Among the absorbers, the other side absorbing portion located on the other side in the thickness direction from the absorber folding line does not overlap with the coated portion when viewed in the thickness direction. Sex goods.
The absorbent article according to any one of claims 1 to 11.
An absorbent article, wherein all of the coated portions are provided at positions not exposed from the absorbent article.
The absorbent article according to any one of claims 1 to 12.
An absorbent article, characterized in that the coated portion is not provided at the other side end portion of the both side end portions.
The absorbent article according to any one of claims 1 to 13.
The one side end comprises a compressed portion and a non-compressed portion.
The total weight of the microcapsules per unit area coated on the unsqueezed portion is
An absorbent article characterized in that it is greater than the total weight of the microcapsules per unit area coated on the squeezed portion.
The absorbent article according to any one of claims 1 to 14.
The coated portion is an absorbent article characterized by having a plurality of regions in which the total weight of the microcapsules per unit area is different.