JP2007029351A - Absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article capable of keeping the absorptive article clean until the time of use without using a packaging material. <P>SOLUTION: The absorptive article 1 such as a sanitary napkin is provided with a pair of side flaps 6 on both sides of a main body part 5 with an absorbent 4 interposed between a skin abutting surface P and a skin non-abutting surface. The state of being folded so as not to expose the skin abutting surface to the outside is maintained by the sealing work of a flap lamination part formed by folding the side flaps 6 in a longitudinal direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an absorbent article such as a sanitary napkin, a panty liner (cage sheet), and an incontinence pad.

  Conventionally, in absorbent articles such as sanitary napkins and panty liners (orimono sheets), in order to keep the absorbent articles clean until use, it is widely packaged individually with a packaging material made of a resin film or the like. It has been broken. Absorbent articles individually packaged in this way generate a rustling sound when taken out of the packaging material, and anxiety users who do not want others to notice the use or replacement of absorbent articles. There are things to do. In addition, there are some users who need processing of the separated packaging material and feel that processing is troublesome.

There has been proposed a technique that can omit a packaging material for packaging an absorbent article.
Patent Document 1 describes an absorbent napkin in which the skin contact surface of an absorbent material is covered with a waterproof exterior body, and a part of the exterior body is removed to expose a receiving absorption zone. Patent Document 2 describes a side flap of a sanitary napkin designed so as to form an integral part of a protective pouch in which unused napkins are packaged.

European Patent Application No. 0347319 Japanese National Publication No. 2-501278

  However, the absorbent napkin of Patent Document 1 may cause a rustling sound when part of the waterproof exterior body is removed to expose the receptive absorption zone. Processing is also required.

  Since the sanitary napkin of Patent Document 2 is configured to bend the side flaps in the width direction of the main body portion and wrap the main body portions with the side flaps, the side flap is greatly increased outward in the width direction from the main body portion. The side flaps need to be extended, and the side flaps may be uncomfortable when the napkin is worn. Moreover, since it is necessary to enlarge a side part flap, even if it loses a packaging material, it will not be resource saving. Further, the side flap in Patent Document 2 is bent to the outer side of the shorts when the napkin is used, and is fixed to the outer side of the shorts, and is provided only in the vicinity of the central part in the longitudinal direction of the napkin. It is also difficult to wrap the used napkin without any gaps.

  Accordingly, an object of the present invention is to provide an absorbent article that can keep the absorbent article clean until it is used without using a packaging material.

  The present invention has a pair of side flaps on both sides of a body contact portion comprising a skin contact surface, a non-skin contact surface and an absorbent body interposed between the skin contact surface and the non-skin contact surface, By providing an absorbent article in which the state where the skin contact surface is folded so as not to be exposed to the outside is maintained by sealing the flap laminated portion formed by folding the side flaps in the longitudinal direction. Is achieved.

  According to the absorbent article of the present invention, the absorbent article can be kept clean until use without using a packaging material.

Hereinafter, the present invention will be described in detail based on preferred embodiments thereof.
A sanitary napkin 1 (hereinafter also simply referred to as a sanitary napkin 1) according to an embodiment of the present invention includes a skin contact surface P, a non-skin contact surface Q, and the skin as shown in FIGS. It has a main body portion 5 having an absorbent body 4 interposed between the contact surface P and the non-skin contact surface Q, and a pair of left and right side flaps 6, 6 formed on both sides of the main body portion 5. As shown in FIG. 3, the skin contact surface P of the main body portion 5 includes a liquid-permeable surface sheet 2 and side sheets 7 that cover the surface sheet 2 on the skin contact surface side on both sides of the absorber 4. The non-skin contact surface Q of the main body portion 5 is formed from a liquid-impermeable or water-repellent back sheet 3.

  4 and 5, the sanitary napkin 1 is folded so that the skin contact surface P of the main body portion 5 is not exposed to the outside, and in this state, the side flaps 6 and 6 are folded in the longitudinal direction. It is maintained by the sealing process of the flap laminated portion 60 formed in (1). 4, 8, and 9, the portion of the side flap laminated portion 60 that has been subjected to sealing processing is indicated by reference numeral 61, and in FIGS. 1 to 3 and FIG. 7, it corresponds to the sealing portion. A portion (a portion of the side flap 6 on which sealing processing has been performed) is indicated by reference numeral 61.

  The sanitary napkin 1 according to this embodiment shown in FIG. 4 has a sanitary napkin 1 ′ with the flap 6 not sealed as shown in FIG. Fold over the contact surface (see FIG. 5B), and then fold the front part C over the rear part A over the central part B (see FIG. 5C). This is obtained by subjecting the laminated portion 60 of the side flaps 6 of the obtained napkin 1 ′ in the three-fold state to sealing. The laminated portion 60 of the side flap in the present embodiment is formed by folding the left and right side flaps 6 and 6 in a tri-fold state in the longitudinal direction, and the sheet material constituting the side flap 60 is laminated in two or more layers. Has been.

As shown in FIG. 5C, the side flap laminated portion 60 is sealed in such a manner that the side flap laminated portion 60 is pressed in the thickness direction to join the laminated layers.
Examples of the sealing process include heat sealing, ultrasonic sealing, pressurization with an adhesive interposed between layers, etc., from the viewpoint of keeping the side flap 6 flexible and preventing discomfort due to contact with the skin. Heat sealing or ultrasonic sealing is preferred.

  Further, the side flap 6 is preferably made of a material that is as flexible as possible. In particular, the side flap 6 preferably has a portion made of only a nonwoven fabric, and the portion is preferably sealed. Examples of the nonwoven fabric in this case include air-through nonwoven fabric, heat roll nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, and spunlace nonwoven fabric. These may be a single nonwoven fabric or two or more nonwoven fabrics, or a laminated nonwoven fabric in which a nonwoven fabric and a non-nonwoven fabric are laminated and partially bonded.

In the sanitary napkin 1, as shown in FIG. 3, the outer edge portion 62 of the side flap 6 is formed only from the side sheet 7 made of a water-repellent nonwoven fabric, and the outer edge portion 62 is sealed. . As for the side seat | sheet 7, the edge part on the opposite side to an outer edge part is located in the skin contact surface side of the side part of the absorber 4, and forms the leak-proof cuff.
As another example in which a part of the side flap 6 is constituted by a non-woven sheet and the part is sealed, as shown in FIG. 6, the outer edge 62 of the side flap 6 is replaced with a back sheet made of a resin film. 3, a method of applying a sealing process to the outer edge portion of the nonwoven fabric surface sheet 2 extending from the side edge portion 3, and the outer edge portion 62 of the side flap 6 as shown in FIG. For example, a non-woven fabric sheet (a sheet different from the front and back sheets and the side sheet 7) fixed to the part and a sealing process may be performed on the outer edge part.

As shown in FIG. 4, the sanitary napkin 1 of the present embodiment is provided with a non-adhesive slip stopper 8 on the non-skin contact surface Q. The slip stopper 8 prevents the napkin 1 from being displaced from a predetermined position of a wearing tool such as shorts during wearing.
By providing the non-adhesive anti-slip material 8, it is possible to eliminate the need for release paper that covers and protects it, and to prevent problems such as unintentional release of the release paper that can occur when the packaging material is eliminated. be able to. Moreover, since the operation | work which peels a release paper at the time of mounting | wearing is unnecessary, it can attach to shorts quickly and generation | occurrence | production of the sound resulting from peeling of a release paper can also be prevented. In FIGS. 1 to 3 and 5, the illustration of the misalignment stopper 8 is omitted.

As the non-adhesive anti-slip material, a non-stick material having a base polymer of natural rubber, styrene-butadiene rubber, silicone rubber, chloroprene rubber, butyl rubber, styrene-isoprene rubber or the like is preferable. Of these, silicone rubber or hydrogenated elastomers of SIS and SBS are preferable.
Examples of the method for fixing the slip stopper to the non-skin contact surface include melt coating using a hot melt coater such as a hot melt adhesive.
As shown in FIG. 4, the non-adhesive slip stoppers are preferably arranged in a dotted pattern. By arranging the non-skin contact surface of the absorbent article in a dotted shape, it is possible to minimize the impediment to the moisture permeability when the non-skin contact surface of the absorbent article is made of a moisture permeable material.
Further, a hook material of a mechanical fastener can also be used as the non-adhesive slip stopper. As the hook, various known shapes such as a hook shape and a mushroom shape can be used without particular limitation.

  Further, as shown in FIG. 4, the sanitary napkin 1 of the present embodiment is provided with an extensible disposal tape 9 on the non-skin contact surface Q of the main body portion 5. By providing the extensible disposal tape 9 on the non-skin contact surface, the rolled napkin can be fixed with the elongated disposal tape when the napkin 1 is processed, and can be disposed of in a sanitary manner. During use, the inconvenience of the disposal tape 9 coming into contact with the wearer's skin can be prevented.

  As the extensible disposal tape 9, conventionally known various kinds of disposable diapers and the like can be used without particular limitation. For example, it can be expanded by developing a tape folded in a three-fold state. It is possible to use a material that can be stretched by extending the tape base material. As an example of the former disposal tape 9, it has a fixed part fixed to the non-skin contact surface of the napkin, an intermediate part laminated on the fixed part, and a tip part laminated on the intermediate part The adhesive between the fixed portion and the intermediate portion is provided on the intermediate portion side, and the intermediate portion and the tip portion are adhesively detachably adhered with the adhesive provided on the tip portion side. The thing which can peel and extend between an intermediate part and between an intermediate part and a front-end | tip part can be mentioned. Also, those described in Japanese Utility Model Publication Nos. 8-10305 and 2002-65745 can be used.

In the sanitary napkin 1 of the present embodiment, as shown in FIGS. 2 and 3, a sheet (surface sheet 2 or side sheet 7) that covers the skin contact surface P side of the absorbent body 4 and a non-skin contact surface. A seal portion 61 of the flap laminated portion 60 is formed at a location different from the joint portion 10 with the sheet covering the side (back surface sheet 3). More specifically, a sealing process is applied to a portion outside the joint 10 in the width direction of the napkin 1. The same applies to each napkin shown in FIGS. 6 and 7, and a sheet (surface sheet 2) that covers the skin contact surface side of the absorbent body 4 and a sheet (back sheet 3) that covers the non-skin contact surface side. A seal part 61 of the flap laminated part is formed at a place different from the joint part 10.
Thus, if the seal | sticker of a flap laminated part is provided in the location different from the junction part 1 of the sheet | seat which coat | covers the skin contact surface side of the absorber 4, and the sheet | seat which covers a non-skin contact surface, When the napkin is used, when the seal part 61 of the sanitary napkin 1 in the folded state as shown in FIG. 4 is peeled off, there is no possibility that the joint of the joint part 10 is peeled off at the same time. Will not be difficult to peel off, and the seal part 61 will not be broken or torn at the time of peeling.

  As shown in FIG. 4, the sanitary napkin 1 of the present embodiment is a flap formed by folding the side flaps in the longitudinal direction when the skin contact surface P of the main body portion 5 is folded so as not to be exposed to the outside. Since it is maintained by the sealing process of the laminated portion 60, the skin contact surface can be kept clean until use without using a packaging material. There is a possibility that the outer surface of the napkin may become dirty, but if it is in a normal storage state, the degree of contamination is small and there is no particular problem.

When using the sanitary napkin 1 of the present embodiment, as described above, the seal portion 61 of the sanitary napkin 1 in the folded state shown in FIG. 4 is peeled off. In the folded state of the sanitary napkin 1, the end in the longitudinal direction of the sanitary napkin 1 located on the outer surface is formed in an arc shape as shown in FIGS. By doing so, it can be easily developed, which is preferable.
The sanitary napkin 1 from which the seal part 61 has been peeled off can be used by being placed in a crotch part of shorts or the like.
Thus, in the sanitary napkin 1 of this embodiment, since it is not necessary to peel off the packaging material in use, it can be quickly attached to a wearing tool such as shorts, and the sound generated when the packaging material is peeled off. No one else will notice the use or replacement of napkins. Moreover, there is no troublesomeness to process the separated packaging material. Furthermore, the packaging material can be eliminated, which saves resources.

As a forming material of each part of the sanitary napkin 1 of the present embodiment, a material that is usually used in the technical field can be used without particular limitation.
For example, as the surface sheet, liquid permeable sheets such as various nonwoven fabrics and perforated films subjected to a hydrophilic treatment can be used. The back sheet 3 may be a liquid permeable or water repellent sheet such as a thermoplastic resin film or a laminate of the film and a nonwoven fabric. As the base material of the back sheet 3, one having moisture permeability can be used. As a base material used for the back sheet 3 having moisture permeability, a film is formed by melt-kneading a hydrophobic thermoplastic resin and a minute inorganic filler made of calcium carbonate or the like or an incompatible organic polymer. And a porous film obtained by uniaxially or biaxially stretching the film. As the side sheet 7, a water-repellent nonwoven fabric produced by various production methods such as air-through, heat roll, spun bond, melt blow, and the like can be preferably used.

  Hereinafter, a sanitary napkin as another embodiment of the present invention will be described with reference to FIGS. About these sanitary napkins, a different point from the sanitary napkin 1 mentioned above is demonstrated, and the same point attaches | subjects the same code | symbol and abbreviate | omits description. The point about the sanitary napkin 1 described above is appropriately applied to points that are not particularly described.

  In the sanitary napkin 1A shown in FIG. 8, the main body portion 5 is folded in a folded state, and the folded state is obtained by sealing the flap laminated portion 60 formed by folding the side flaps in the longitudinal direction. Maintained. The seal portion is denoted by reference numeral 61. In the sanitary napkin 1A, both end portions in the longitudinal direction of the napkin 1A are also sealed to form a seal portion 63.

  In the sanitary napkin 1B shown in FIG. 9, the main body portion 5 is folded in a four-folded state, and the folded state is obtained by sealing the flap laminated portion 60 formed by folding the side flaps in the longitudinal direction. Maintained. The seal portion is denoted by reference numeral 61.

  Also in the sanitary napkin shown in FIGS. 8 and 9, the folded state so that the skin contact surface of the main body portion 5 is not exposed to the outside is maintained without using a packaging material, and the sanitary napkin described above is used. The same effect as the napkin 1 is obtained. In the sanitary napkin of FIGS. 8 and 9, similarly to the sanitary napkin 1 described above, a non-adhesive slip stopper is provided on the non-skin contact surface Q, and the non-skin contact surface Q is provided on the non-skin contact surface Q. It is preferable to provide a disposal tape.

  In the sanitary napkin shown in FIG. 10, a perforation 64 is provided inside the seal portion 61 by the sealing process in the side flap laminated portion 60. If there are perforations, the perforation part will tear at the time of opening, so it can be opened with a slight force. The perforation 64 may be cut out and opened entirely from the perforated part, and as shown in FIG. 10 (b), the part 65 in the longitudinal direction of the napkin has a perforation. The perforation 64 can also be put only in the part 66 folded over there without putting an eye.

  In the sanitary napkin shown in FIG. 10, no perforation is made in the central portion (B area in FIG. 5) in the longitudinal direction of the napkin, and the portion folded in the central portion in the longitudinal direction (FIG. 5). A perforation 64 is inserted in the A and C regions. As shown in FIG. 10 (c), the perforation is cut and opened as shown in FIG. 10 (c) by not making a perforation in a part of the napkin in the longitudinal direction but only perforating the folded part. Even so, no dust can be generated, and the force required for opening can be further reduced. The seal part remaining on the side of the main body part is preferably a soft seal part that does not give a sense of incongruity during use.

The present invention is not limited to the embodiments described above, and can be modified as appropriate.
The arrangement pattern of the slip stoppers can be applied in a grid pattern or a stripe pattern instead of the dotted pattern (dot pattern) like the sanitary napkin 1. In addition, the shape of each dot when the pattern is applied in the form of dots (dots) can be any shape such as an ellipse, a rectangle, a triangle, a rhombus, a heart shape, and a star, in addition to a circle. .
In addition to the sanitary napkin, the absorbent article in the present invention may be a panty liner (orimono sheet), an incontinence pad, or the like.

It is a perspective view which shows the state which expand | deployed the sanitary napkin as one Embodiment of the absorbent article of this invention. FIG. 2 is a plan view of the sanitary napkin of FIG. FIG. 3 is a schematic cross-sectional view showing an enlarged part of the cross-section along the line XX of FIG. FIG. 4 is a perspective view showing a folded state of the sanitary napkin of FIG. 1. FIG. 5 is a perspective view showing how to fold the sanitary napkin shown in FIG. FIG. 6 is a view (corresponding to FIG. 3) showing a sanitary napkin as another embodiment of the present invention. FIG. 7 is a view (corresponding to FIG. 3) showing a sanitary napkin as still another embodiment of the present invention. 8A and 8B are views showing a sanitary napkin as still another embodiment of the present invention, in which FIG. 8A is a perspective view and FIG. 8B is a schematic cross-sectional view taken along the line YY of FIG. FIG. 9 is a view showing a sanitary napkin as still another embodiment of the present invention, in which (a) is a perspective view and (b) is a schematic cross-sectional view taken along the line ZZ of (a). FIG. 10 is a diagram showing a sanitary napkin as still another embodiment of the present invention, in which (a) is a perspective view, (b) is a schematic cross-sectional view taken along line II-II in (a), and (c) is It is a perspective view which shows the state which cut | disconnected and opened the perforation.

Explanation of symbols

1,1A, 1B Sanitary napkin (absorbent article)
5 Main body part 6 Side flap 60 Flap laminated part 61 Seal part (part which gave seal processing)
7 Side sheet 8 Slip stopper 9 Waste tape

Claims (5)

  A skin contact surface, a non-skin contact surface and a pair of side flaps on both sides of a main body portion comprising an absorbent body interposed between the skin contact surface and the non-skin contact surface; An absorbent article in which a state where the surface is folded so as not to be exposed to the outside is maintained by a sealing process of a flap laminated portion formed by folding the side flaps in the longitudinal direction.   The absorbent article according to claim 1, wherein a non-adhesive slip stopper is provided on the non-skin contact surface.   The absorbent article according to claim 1 or 2, wherein an extensible disposal tape is provided on the non-skin contact surface.   The absorptive article according to any one of claims 1 to 3 in which said side flap has a portion which consists only of nonwoven fabric, and said seal processing is given to this portion. The absorptive article according to any one of claims 1 to 4 in which perforation is contained in the inside of the seal part by said seal processing in said flap lamination part.

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