JP7358249B2 - absorbent articles - Google Patents

Description

The present invention relates to absorbent articles.

Disposable diapers with absorbent bodies that absorb excrement are used not only for raising infants and caring for adults, but also for raising pets. Further, as described in Patent Document 1, it is known that a fibrous structure including microcapsules containing an insect repellent component has repellency against sanitary pests such as mosquitoes.

Japanese Patent Application Publication No. 2017-179651

However, if microcapsules containing insect repellent ingredients as shown in Patent Document 1 are applied as they are to absorbent articles such as disposable diapers, the wearer or the user who is trying to wear the absorbent article will not be able to absorb the information contained in the packaging material. When the packaged absorbent article is taken out, the insect repellent ingredients are retained in microcapsules, so it is difficult to make the wearer or user aware that the absorbent article has an insect repellent effect. was there.

The present invention has been made in view of the above-mentioned problems, and its purpose is to prevent the wearer, etc., from taking out the absorbent article from the packaging material and while wearing the absorbent article. It is an object of the present invention to provide an absorbent article that makes it easy to recognize the effects of substances coated on the absorbent article.

The main invention for achieving the above purpose is:
An absorbent article having a coating portion coated with a plurality of microcapsules containing a scented substance,
When removed from the packaging material,
The plurality of microcapsules are
a broken capsule in which the microcapsule is broken;
the microcapsules have unbroken capsules;
The absorbent article is characterized in that the coated portion has a processed portion in which the number of broken capsules per unit area is greater than the number of undamaged capsules per unit area.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, when taking out the absorbent article from the packaging material and while wearing the absorbent article, it becomes easier for the wearer to recognize the effect of the substance coated on the absorbent article.

FIG. 1 is a skin-side plan view of the diaper 1 in an expanded and stretched state. FIG. 2 is a plan view of the non-skin side of the diaper 1 in an expanded and stretched state. FIG. 3A is a schematic diagram showing a state in which the diaper 1 shown in FIG. 1 is folded along the tape fold line TL. FIG. 3B is a schematic diagram showing a state in which the diaper 1 shown in FIG. 3A is folded along the left and right folding lines SL. FIG. 4 is a schematic diagram showing the diaper 1 in a packaged state. FIG. 5 is a perspective view of a disposable diaper package 50. FIG. 6 is an electron micrograph of a region where broken capsules DC and non-damaged capsules NC coexist in the coating area. FIG. 7 is an electron micrograph of a region where broken capsules DC and non-damaged capsules NC coexist in the coating area. FIG. 8 is an electron micrograph of a region where broken capsules DC and non-damaged capsules NC coexist in the coating section. FIG. 9 is an enlarged view of portion X in FIG. FIG. 10 is a diagram illustrating an example of a machining trace portion.

From the description of this specification and the attached drawings, at least the following matters will become clear.
An absorbent article having a coated portion coated with a plurality of microcapsules containing a scented substance, and when removed from the packaging material, the plurality of microcapsules are damaged due to breakage. The absorbent article is characterized in that it has a capsule and an unbroken capsule in which the microcapsule is not broken.

According to such an absorbent article, the user or wearer can recognize the effect of the substance that has flowed out from the broken capsule when taking the absorbent article out of the packaging material, and can also be aware of the effects of the substance that has flowed out from the broken capsule before and during wear. Breaking the broken capsule makes it easier to recognize the effects of the substance while wearing it.

In such an absorbent article, it is desirable that the substance is an insect repellent fragrance.

According to such an absorbent article, the user or wearer can recognize the effect of the insect repellent fragrance when taking it out from the packaging material, and can easily recognize the effect of the insect repellent fragrance before and while wearing it. . In addition, due to the effect of the insect repellent fragrance that has flowed out from the damaged capsule in the packaged state, it is possible to reduce the risk of insects getting inside the packaging material during storage at a store or at home.

In such an absorbent article, it is desirable that the coated portion has a processed portion in which the number of broken capsules per unit area is greater than the number of undamaged capsules per unit area.

According to such an absorbent article, it is possible to reliably provide broken capsules and undamaged capsules in the absorbent article due to the processing marks, making it easier to recognize the effect of the substance both before and during wear. .

In such an absorbent article, in a state taken out from the packaging material, the coated part has a non-processed part in which the number of undamaged capsules per unit area is greater than the number of broken capsules per unit area, It is desirable that the area of the unprocessed portion is larger than the area of the processed portion.

According to such an absorbent article, when the absorbent article is worn, the wearer or the like can make the effect of the substance more effective, such as by damaging an unbreakable capsule according to the effect of the substance.

In such an absorbent article, when taken out from the packaging material, at least a portion of the absorbent article is folded at the fold line, the processed portion is the fold line, and the broken capsule is folded at the fold line. is preferably provided at the fold line portion.

According to such an absorbent article, broken capsules are easily formed by the pressure of folding, so processing marks can be easily formed during manufacturing, and the material can be more securely stored in the packaging material. It becomes easier to demonstrate the effect.

In such an absorbent article, it is preferable that the broken capsule is provided at an outer end of the absorbent article in the unfolded state.

According to such an absorbent article, a damaged capsule is easily formed due to the impact during the cutting process of forming the outer end of the absorbent article provided with the coated part, and the capsule is more securely accommodated in the packaging material. From this state, it becomes easier to exert the effects of substances.

It is preferable that such an absorbent article has a fastening tape part, and the coating part is provided in the fastening tape part.

According to such an absorbent article, the fastening tape part is a part that is particularly likely to be grabbed by hands when putting on the absorbent article, so it is easier to form a broken capsule when putting on the absorbent article more reliably. , it becomes easier to exert the effect of the substance in the worn state.

In such an absorbent article, it is desirable that the broken capsule be provided at the tip of the fastening tape section.

According to such an absorbent article, it is easier to form a broken capsule due to the impact during the cutting process when forming the fastening tape part, and it is easier to more reliably exhibit the effect of the substance from the state accommodated in the packaging material. Become.

In such an absorbent article, when taken out from the packaging material, the fastening tape portion is folded with the skin side inward along the tape fold line along the vertical direction; It is desirable that the broken capsule be provided with a tacking and compressing part for maintaining the tacking condition, and the broken capsule is provided in the tacking and compressing part.

According to such an absorbent article, broken capsules are more likely to be formed due to the pressure used to form the temporary compressed part, and the effect of the substance can be more easily exerted from the state that it is more securely housed in the packaging material. Become.

===Embodiment===
As an absorbent article of the present invention, an embodiment will be described using a so-called tape-type deployable disposable diaper as an example. However, the present invention is not limited thereto, and can also be applied to absorbent articles such as pants-type disposable diapers, urine absorbing pads, sanitary napkins, vaginal discharge sheets, and disposable animal 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 the "diaper 1"). Although the diaper 1 will be described as a disposable diaper for infants, it may also be a disposable diaper for adults.

FIG. 1 is a skin-side plan view of the diaper 1 in the unfolded and stretched state. FIG. 2 is a plan view of the non-skin side of the diaper 1 in an expanded and stretched state. The unfolded state of the diaper 1 refers to the state in which the entire diaper 1 is unfolded in a two-dimensional manner. The stretched state of the diaper 1 is a state in which the diaper 1 is stretched to such an extent that the wrinkles that have occurred on the diaper 1 are virtually no longer visible, and the dimensions of each member constituting the diaper 1 (for example, the top sheet 3 described later) are The diaper 1 is in a state where it has been stretched until the length matches or is close to the dimensions of the single member. 1 and 2 show the diaper 1 taken out from the packaging material (not shown), unfolded, and stretched.

In the unfolded and stretched state shown in FIG. 1 and the like, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction that are orthogonal to each other. Note that the "longitudinal direction" in the unfolded and stretched state corresponds to the "vertical direction" in the natural state and packaged state. The thickness direction is the direction in which the members constituting the diaper 1 are laminated, and the side that contacts 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 that is symmetrical with respect to the center line CC. The center line CL is the center in the longitudinal direction, and has a ventral part 1A on the ventral side of the center line CL and a dorsal part 1B on the dorsal side of the center line CL. In the diaper 1, the ventral part 1A covers the wearer's ventral side, and the back part 1B covers the wearer's back side.

The diaper 1 includes an absorbent body 2 that absorbs excreted liquid such as urine, a liquid-permeable top sheet 3 that covers the absorbent body 2 from the skin side, and a liquid-impermeable leak-proof top sheet that covers the absorbent body 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 and forms the outer shape of the diaper 1, and a pair of side sheets 6 arranged in a pair in the width direction on the top sheet 3. ing.

Examples of the top sheet 3 include an air-through nonwoven fabric, examples of the leak-proof sheet 4 include a resin film such as a polyethylene film, and examples of the back sheet 5 include a flexible sheet such as a spunbond nonwoven fabric. The top sheet 3 and the back sheet 5 are each selected from SMS nonwoven fabrics (spunbond/meltblown/spunbond nonwoven fabrics), spunbond nonwoven fabrics, air-through nonwoven fabrics, plastic sheets, perforated plastic sheets, laminate sheets thereof, etc. It may also be used.

The absorbent body 2 has a longitudinally elongated rectangular shape in plan view, and includes 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 when viewed from above. Examples of liquid-absorbing materials include liquid-absorbing fibers such as pulp fibers containing superabsorbent polymers (so-called SAP). Examples of the core wrap sheet include liquid-permeable tissues and nonwoven fabrics, but the absorbent body may not have a core wrap sheet. Note that the absorbent core may not only have a substantially hourglass shape that is constricted inward in the left-right direction, but may also have a rectangular shape such as a rectangle.

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

Further, a pair of leg elastic members 7 (for example, (rubber thread) is provided. Specifically, as shown in FIG. 1, in the unfolded and stretched state, the leg elastic members 7 are provided outside the three-dimensional gathers elastic members 61 in the left-right direction. The leg elastic member 7 is fixed to the non-skin side surface of the side sheet 6 in a stretched state in the longitudinal direction. Therefore, in the worn state, each side portion of the diaper 1 in the left and right direction fits around the legs of the wearer, and leakage of excrement is suppressed.

The number, shape, material, etc. of the elastic members 61 and the leg elastic members 7 are not limited to those shown in FIG. 1 and the like. For example, the number of elastic members 61 and leg elastic members 7 can be set arbitrarily, and can be made from string-like polyurethane elastic fibers, elastic films or elastic fibers made by melting thermoplastic elastomer resin. It may also be a stretchable nonwoven fabric.

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

The fastening tape section 40 includes a tape base material 41, a hook material 42, and a fixing section 43. The tape base material 41 is, for example, a green nonwoven fabric member, and has a substantially rectangular shape that is elongated in the left-right direction. As shown in FIG. 2, the tape base material 41 is provided with a plurality of substantially rectangular compressed portions 40E in a staggered manner over substantially the entire area of the tape base material 41. In FIG. 1, the compressing portion 40E is omitted for convenience. By providing the compressed portion 40E in the tape base material 41, the fibers of the nonwoven fabric of the tape base material 41 are compressed and the tape shape is maintained, and the rigidity of the tape base material 41 is increased so that the diaper 1 can be worn. A user such as a guardian (hereinafter also simply referred to as a "user") who intends to wear the diaper can easily grasp the fastening tape section 40, and can more easily perform the operation of wearing the diaper 1. The hook material 42 (for example, a male member of a hook-and-loop fastener) is provided on the skin side surface of the tape base material 41 that extends outward in the left-right direction from the side flap 30.

In order to put the diaper 1 into the wearing state, that is, to put the diaper 1 on the wearer, the user or the wearer himself/herself applies the unfolded diaper 1 to the wearer while moving the diaper 1 in the longitudinal direction. It is folded in half at the center (around the center line CL), and the pair of side flaps 30 on the back side portion 1B are folded back 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 abdominal portion 1A. In the diaper 1, the hook material 42 can be directly locked to the backsheet 5 by using a nonwoven fabric for the backsheet 5. However, the present invention is not limited to this, and a member, such as a female member of a hook-and-loop fastener, to which the hook member 42 can be engaged may be provided separately from the back sheet 5. Further, instead of the hook material 42, for example, adhesive tape may be provided on the fastening tape portion 40.

The diaper 1 has a coated portion coated with microcapsules MC containing an insect repellent fragrance. Details of the coating part will be described later.

Insect repellent fragrances are repellents (insect repellents) against pests such as mosquitoes, silkworms, midges, and flies, and are fragrances made from synthetic compounds or natural plant extracts. For example, citronellal, DEET (N,N-diethyl-3-methylbenzamide), sesquiterpene, ethyl butylacetylaminopropionate, picaridin, pyrethroid, cinnamon, rosemary, lavender, peppermint, eucalyptus, and the like can be used. The insect repellent fragrance can be selected depending on the target pest and the person wearing it.

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

In microcapsules MC, a film (also referred to as a wall material or the like) enclosing a core material is changed by physical or chemical stimulation, and releases the contained components. Examples of the physical stimulation include applying heat, physical pressure, physical shock, vibration, light, etc. to the film of the microcapsules MC. Examples of chemical stimulation 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 microcapsules MC, it is possible to cause deterioration, denaturation, softening, porosity, dissolution, disintegration, or decomposition of the film. As a result, the release of the core material within the microcapsules MC can be started, or if it has been gradually released before stimulation, the degree of release can be accelerated.

As the material for the microcapsules MC, inorganic materials and organic materials can be used, such as sugars, monosaccharides (e.g., glucose), disaccharides (e.g., sucrose), polysaccharides (e.g., dextrin, glucomannan, sodium alginate, water-soluble starch, etc.), gelatin, gelatin/gum arabic, water-soluble polymers (e.g., 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 for the microcapsules MC depending on the physical properties of the core material and the environment and conditions in which release of the core material is desired. The diaper 1 of this embodiment uses microcapsules made of urethane resin with a film thickness of 2 μm as microcapsules MC, and uses citronellal as an insect repellent fragrance. This citronellal has a medicinal herbal aroma, and it also has a scent that easily impresses with its insect repellent effect. In particular, as the capsule, it is preferable to use a capsule made of urethane resin that disintegrates upon physical stimulation.

Microcapsules are coated on the coated portion together with a predetermined solvent. Microcapsules MC are preferably insoluble in a solvent, and preferably do not swell in a solvent that is a dispersion medium for microcapsules MC. This is from the viewpoint of protecting the inner core material. Note that the solvent in which the microcapsules are dispersed may be referred to as the first solvent to distinguish it from the second solvent that can be encapsulated in the microcapsules together with the insect repellent fragrance.

The microcapsules MC have a solvent solubility of preferably 1.0 g or less, more preferably 0.5 g or less, and even more preferably 0.1 g or less per 100 g of the solvent that is the dispersion medium for the microcapsules at 25°C. . Solvent solubility is determined by adding 1.0 g (0.5 g, 0.1 g, etc.) of the sample to 100 g of solvent at 25°C, leaving it to stand for 24 hours, stirring lightly if necessary, and then adding the sample to 100 g of solvent. Evaluate visually whether or not it has dissolved.

The solvent must be one that retains the insect repellent fragrance encapsulated in the microcapsules and retains the functional ingredients, that is, it must dissolve the functional ingredients but not dissolve or swell the microcapsules. is preferred.

The amount of insect repellent fragrance released can be varied depending on the amount, its vapor pressure, the degree of breakage of the microcapsules against physical stimulation, the thickness of the microcapsule layer, the particle size of the microcapsules, etc.

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

First, fold the unfolded and stretched diaper 1 along the tape fold line TL of the fastening tape section 40 with the skin side (the surface on which the hook material 42 is provided) inside, and then remove the folded fastening tape section 40 from the skin side. By providing a plurality of temporary pressing parts F toward the skin side (from the non-skin side of the fastening tape part 40), the state shown in FIG. 3A is achieved. The tape folding line TL is a folding line provided on the outer side of the side flap 20 in the left-right direction and along the longitudinal direction (vertical direction). The temporary pressing part F is provided to maintain the folded state of the fastening tape part 40, so that the fastening tape part 40 can be put into the unfolded state shown in FIGS. 1 and 2 when worn again. , is a compressed part provided as a temporary fixing. The temporary fixing pressing parts F are circular pressing parts and are arranged in a staggered manner.

Next, from the state shown in FIG. 3A, the side edges S in the left and right directions are folded inward in the left and right direction and inward in the thickness direction (skin side) along the left and right folding lines SL of the diaper 1. The state shown in 3B is reached. The left and right folding lines SL are a pair of folding lines along the vertical direction. In this embodiment, the left and right fold lines SL are provided outside the absorbent core 2 and inside the top sheet 3 and the side flaps 30 in the left and right direction.

Then, from the state shown in FIG. 3B, the diaper 1 is folded along the upper and lower fold lines CL with the skin side facing inward, resulting in the state shown in FIG. 4. The vertical fold line CL is a fold line along the left-right direction, and is also the center line CL that is the center in the longitudinal direction. The diaper 1 in the packaged state shown in FIG. 4 is also in 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 the diaper 1 in a state in which the diaper 1 accommodated in the packaging material 51 is taken out. Note that the package 50 is a product in which a plurality of diapers 1 are housed inside a packaging material 51 provided with a handle 52, and is in a sealed packaging state with the packaging material 51. Although FIG. 5 shows a package 50 including a plurality of diapers 1, the present invention is not limited thereto. For example, it may be a package in which one absorbent article is accommodated in one packaging material.

===About the coating part===
The coating portion is provided at an arbitrary location within the entire area of the diaper 1. In this embodiment, a coated part R (the shaded part in FIGS. 2 and 9) is provided on the non-skin side surfaces of the fastening tape parts 40 on both sides in the left-right direction, in a part that does not overlap with the back sheet 5 or the side sheets 6. There is. The coating portion R is applied in a planar manner to substantially the entire area of the tape base material 41 on which a plurality of compressed 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, etc. Moreover, it is preferable that the tape base material 41 has hydrophilicity so that the microcapsules MC are easily entangled with the nonwoven fabric fibers 45 of the tape base material 41 of the fastening tape portion 40.

The coated portion R of the diaper 1 taken out from the packaging material 51 shown in FIG. 4 is provided with damaged capsules DC in which the microcapsules MC are damaged and non-damaged capsules NC in which the microcapsules MC are not damaged. In other words, the diaper 1 housed in the packaging material 51 has broken capsules DC and undamaged capsules NC.

A broken capsule DC is a microcapsule MC in which at least a portion of the film is damaged. Damage refers to a state in which the film has at least one of scratches, dents, deformation, and cracks. In the broken capsule DC, the insect repellent fragrance contained therein leaks out of the microcapsule MC from the broken part, or the insect repellent fragrance is exposed.

FIGS. 6 to 8 are electron micrographs taken at a magnification of 500 times, showing a region where broken capsules DC and non-damaged capsules NC coexist in the coating area. In the photographs shown in FIGS. 6 to 8, the rod-shaped objects are the nonwoven fabric fibers 45 of the tape base material 41, and the microcapsules MC are provided around the nonwoven fabric fibers 45. The unbreakable capsule NC has a spherical shape and is provided with an insect repellent fragrance inside. On the other hand, broken capsules have various shapes, and may be crushed or have their insides visible.

Since the insect repellent fragrance of this embodiment is a highly volatile fragrance, by providing the diaper 1 with the broken capsule DC, it becomes easier to fill the inside of the packaging material 51 with the insect repellent fragrance in a sealed packaging state. . When this packaging material 51 is opened, the wearer or user can first recognize the scent of the insect repellent fragrance contained in the damaged capsule DC. Thereby, the wearer or user can recognize that the diaper 1 is equipped with an insect repellent fragrance before wearing the diaper 1. Further, due to the effect of the insect repellent fragrance that has flowed out from the damaged capsule in the packaged state, it is possible to reduce the possibility that insects will get inside the packaging material 51 when stored at a store or at home.

In addition, since the diaper 1 taken out from the packaging material 51 is provided with the damaged capsule DC, the wearer or user can take out the diaper 1 from the packaging material 51 and unfold the diaper 1. The scent of the insect repellent perfume released from the capsule DC can be recognized. Thereby, the wearer or user can recognize that the diaper 1 is equipped with an insect repellent fragrance before wearing the diaper 1.

Furthermore, since the diaper 1 has not only the broken capsules DC but also the undamaged capsules NC, the non-damaged capsules NC can be damaged by applying some kind of impact or contact in the worn state. By applying physical stimulation to the undamaged capsule NC to form a broken capsule DC, the insect repellent fragrance can be newly leaked to the outside or exposed. This makes it possible to recognize the presence of the insect repellent fragrance not only before wearing but also while wearing. Moreover, the insect repellent effect of the insect repellent fragrance can be easily exerted not only before the diaper 1 is worn but also while the diaper 1 is being worn.

Incidentally, the tape base material 41 includes a plurality of compressed parts 40E, but in order to form the coated part R on the tape base material 41 on which the compressed parts 40E have been formed in advance, the compressed parts 40E on the tape base material 41 are The microcapsules will not be damaged due to the formation of .

FIG. 9 is an enlarged view of portion X in FIG. In FIG. 9, the compressed portion 40E provided on the tape base material 41 is omitted. Usually, the fastening tape part is a part that the wearer or user holds onto the fastening tape part 40 by hand when wearing the garment. Therefore, by providing the coated part R in the fastening tape part 40, the microcapsules MC in the coated part R can be removed by physical stimulation grasped by the wearer or user, such as rubbing the fastening tape part 40. Since the undamaged capsule NC can be more reliably brought into the state of the broken capsule DC, the insect repellent fragrance can more easily exert its effect while being worn.

This coated area R has a machining trace area in which the number of broken capsules DC per unit area is greater than the number of undamaged capsules NC per unit area. The processed portion is a portion where, after the coating portion R was formed, processing was performed that applied pressure or impact, such as compression processing, folding processing, cutting processing, laser processing, or the like. The machining trace portion is a portion where the non-damaged capsule NC becomes a damaged capsule DC due to the pressure and impact caused by the machining. It is preferable that the processing to form the processing marks is performed during the manufacturing process. By being carried out during the manufacturing process, a broken capsule DC is provided in the processed portion of the packaged diaper 1. Thereby, the wearer or user can recognize that the diaper 1 is equipped with an insect repellent fragrance before wearing the diaper 1. Note that in FIG. 9 and FIG. 10, which will be described later, the processed portions (M1 to M2, P1 to P5) are shown by dot-shaped hatching.

To compare the number of broken capsules DC per unit area of the diaper 1 and the number of undamaged capsules NC per unit area, prepare multiple sample pieces by cutting out the corresponding area by a unit area, and compare the number of broken capsules DC in each sample piece with the number of undamaged capsules NC per unit area. This can be done by looking at the number of NCs using an electron microscope and comparing them.

Moreover, the diaper 1 is provided with a broken capsule DC at the tip end M1 of the fastening tape section 40. The tip end M1 of the fastening tape portion 40 is a portion adjacent to the cutting location when cutting the tape base material 41 into the shape. Therefore, the tip portion M1 is also the machining trace portion M1. The machining trace portion M1 is likely to form a broken capsule DC due to the impact during the cutting process. In this way, by making the tip M1 of the fastening tape part 40 the machining mark part M1, there is no need to provide a separate process for forming a broken capsule DC, so it is easier and more reliable to prevent breakage in the packaged state. The diaper 1 can be provided with a capsule DC. As a result, the diaper 1 in the packaged state comes to have the damaged capsule DC, and the wearer or user can recognize that the diaper 1 includes an insect repellent fragrance before wearing the diaper 1.

Furthermore, as shown in FIG. 3A, in the packaged state, the diaper 1 has a tacking compressed part F for maintaining the folded state of the fastening tape part 40, and this tacking compressed part F is This is Atobe M2. The machining mark portion M2 is a portion in which a temporary fixing compressed portion F is formed after the coating portion R is coated, and thus a broken capsule DC is likely to be formed due to the pressure. As a result, the diaper 1 in the packaged state comes to have the damaged capsule DC, and the wearer or user can recognize that the diaper 1 includes an insect repellent fragrance before wearing the diaper 1.

In addition, when the diaper 1 is taken out from the packaging material 51, the coated part R has a non-processed part N in which the number of undamaged capsules NC per unit area is greater than the number of broken capsules DC per unit area. ing. At this time, in the coated portion E, it is preferable that the area of the non-processed portion N is wider than the area of the processed portion. Specifically, the processed portions of the coated portion R of the diaper 1 are processed portions M1 and M2 (temporary fastening compressed portions F), and the non-processed portions N are processed portions M1 and M2 of the fastening tape portion 40. This is the area excluding the (temporary fastening compressed part F). As can be seen from FIG. 9, the area of the unprocessed portion N is wider than the area of the processed portion R of the diaper 1. In this way, by providing a wider area of the undamaged capsule NC, the wearer or user can adjust the capsule to be broken depending on the effect of the insect repellent fragrance, so You can obtain the effect of repellent fragrance.

===Other embodiments===
The embodiments described above are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. It goes without saying that the present invention may be modified and improved without departing from its spirit, and that equivalents thereof are included in the present invention.

In the embodiment described above, the coating portion R is provided on the non-skin side of the fastening tape portion, but the present invention is not limited thereto. The coated portion can be provided in any part of the entire area of the diaper 1 depending on the wearing condition and the like. In addition, when using an insect repellent fragrance like the diaper 1, it is preferable to provide it on the non-skin side of the diaper 1 for the purpose of preventing insects from outside.

Moreover, in the above-mentioned embodiment, although the processing trace parts M1 and M2 of the fastening tape part 40 were demonstrated, the processing trace part is not limited to the above. FIG. 10 is a diagram illustrating an example of a machining trace portion. When the coating portion is provided in a portion that overlaps at least a portion of the machining trace portions P1 to P5, a broken capsule DC is formed in the machining trace portions P1 to P5.

The processed portion P1 is an outer end portion of the diaper 1, and is a portion adjacent to the cut portion when the back sheet 5 and the side sheets 6 are cut into the shapes shown in FIG. 10 and the like. The machining trace portion P1 is likely to form a broken capsule due to impact during the cutting process.

The machining trace portion P2 and the machining trace portion P3 are a left and right folding line SL and a vertical folding line CL, respectively. The left and right fold lines SL and the top and bottom fold lines CL are folded at the corresponding portions of the diaper 1, so that the portions that overlap with the left and right fold lines SL and the top and bottom fold lines CL are folded by the fibers of each member of the diaper 1. are easily crushed and the microcapsules are easily damaged. Therefore, damaged capsules DC are likely to be formed in the processing trace portion P2 and the processing trace portion P3, which are the portions overlapping with the left and right folding lines SL and the upper and lower folding lines CL, due to the pressure caused by the folding process.

The machining trace portion P4 is a portion adjacent to the cutting location when cutting the fastening tape portion 40 into the shape shown in FIG. 10 and the like. The machining trace portion P4 is likely to form a broken capsule DC due to the impact during the cutting process.

The processed portion P5 is a tape fold line TL. When the diaper 1 is taken out from the packaging material 51, the fastening tape portion 40 is folded along the tape fold line (fold line portion) TL. Since the tape base material 41 is bent along the tape fold line TL, the fibers of the tape base material 41 are easily crushed and the microcapsules are easily damaged in the portion overlapping the tape fold line TL due to the bending. Therefore, a broken capsule DC is likely to be formed at least in the processed portion M1 due to the pressure caused by the folding process.

Since the processed portions P1 to P5 are each a step in the manufacturing process of the diaper 1, the broken capsule DC can be formed more reliably without increasing the number of manufacturing steps. As a result, the packaged state has the damaged capsule DC, and the wearer or user can recognize that the diaper 1 includes an insect repellent fragrance before wearing the diaper 1.

In the above-mentioned embodiment, a mode in which the broken capsule DC is provided in the machining trace portion has been described, but the present invention is not limited to this. The diaper may have a broken capsule not necessarily in the processed part but in a different part from the processed part.

In the above embodiment, the fastening tape section 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 fastening tape section 40 may be configured using the back sheet 5 and the side sheets 6.

In the above-described embodiment, the insect repellent fragrance having a medicinal herbal fragrance is encapsulated in the microcapsules, but the present invention is not limited thereto. Microcapsules contain a warming agent with a warming component that has a scent, a cooling agent with a cooling component, a fragrance with an aromatic component, a deodorant with a deodorizing component, and an antibacterial function. It may also encapsulate a substance with a well-known functional component, such as an antibacterial agent or a skin care agent with a skin care component.

1 diaper (expandable disposable diaper, tape-type disposable diaper, disposable diaper), 1A ventral part, 1B dorsal part, 2 absorbent body, 3 top sheet, 4 leak-proof sheet, 5 back sheet, 6 side sheet, 7 legs Surrounding elastic member, 20 side flap, 30 side flap, 40 fastening tape section, 41 tape base material, 40E compressed section, 42 hook material, 43 fixing section, 50 package, 51 packaging material, 61 elastic member, F temporarily fastened compressed section , MC microcapsule, M1 machining trace part (tip), M2 machining trace part, P1 machining trace part, P2 machining trace part, P3 machining trace part, P4 machining trace part, P5 machining trace part, DC damaged capsule, NC undamaged capsule, R coating part , S side end

Claims (5)

An absorbent article having a coating portion coated with a plurality of microcapsules containing a scented substance,
When removed from the packaging material,
The plurality of microcapsules are
a broken capsule in which the microcapsule is broken;
the microcapsules have unbroken capsules;
The absorbent article is characterized in that the coated portion has a processed portion in which the number of broken capsules per unit area is greater than the number of undamaged capsules per unit area. An absorbent article having a coating portion coated with a plurality of microcapsules containing a scented substance,
When removed from the packaging material,
The plurality of microcapsules are
a broken capsule in which the microcapsule is broken;
the microcapsules have unbroken capsules;
In the expanded state,
An absorbent article characterized in that the broken capsule is provided at an outer end of the absorbent article. The absorbent article according to claim 1 or 2,
An absorbent article characterized in that the substance is an insect repellent fragrance. The absorbent article according to claim 1 ,
When removed from the packaging material,
The coated part has an unprocessed part where the number of undamaged capsules per unit area is greater than the number of broken capsules per unit area,
An absorbent article characterized in that the area of the unprocessed portion is larger than the area of the processed portion. The absorbent article according to claim 1 or 4 ,
When removed from the packaging material,
At least a portion of the absorbent article is folded at a fold line,
The processing trace portion is the fold line portion,
An absorbent article characterized in that the broken capsule is provided at the fold line portion.

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