JP2013075012A - Individually packaged absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing tape which can be easily unsealed when unsealing and which is excellent in securing by an adhesive layer when discarding a used absorbent article.SOLUTION: The sealing tape 4 has the third adhesive layer 6a for wrapping the same by a wrapping sheet 3 and fixing the same when discarding the used absorbent article, a pinching part 7 for unsealing standing from the outer face of the wrapping sheet 3 to the outside is formed by folding a center part, a pinching part 8 for discarding is formed continuously to the distal end side of the sealing tape 4 from the pinching part 7 for unsealing, the inner face of one of folded parts of the pinching part 7 for unsealing is the third adhesive layer 6a, the inner face of the other is peelably adhered to the third adhesive layer 6a. It becomes possible to unseal by pulling up the sealing tape 4 by pinching the pinching part 7 for unsealing when unsealing the individually packaged absorbent article 1, and it becomes possible to expose the adhesive layer 6a by pulling up the pinching part 8 for discarding to the distal end side by pinching the same when discarding the used adsorbent article.

Description

  In the present invention, absorbent articles mainly used for sanitary napkins, cage sheets, incontinence pads, medical pads, toiletries and the like are packaged with a packaging sheet, and the opening side edge is fastened with a sealing tape. The present invention relates to an individual absorbent article.

  Conventionally, when an absorbent article is individually packaged, a packaging sheet is arranged on the outer surface side of the absorbent article, and the absorbent article and the packaging sheet are both tri-folded or quadrupled in the longitudinal direction, and the side edge portion is heat-sealed. In addition, the opening side end edge is fixed by a sealing tape.

  This sealing tape is used not only for fastening the opening edge at the time of individual packaging, but also after sealing a used absorbent article by wrapping it with a packaging sheet from which a new absorbent article has been taken out, and then sealing it. It is also used when fixing the rolled-up state by fixing the adhesive part of the tape to the outer surface of the packaging sheet.

  For example, in Patent Document 1 below, the length of the fastening tape can be extended, and when the absorbent article is discarded, the length of the fastening tape is extended to make the absorbent article good. A packaging structure of an absorbent article that can be sealed by being wrapped in a packaging material with good fastening properties is disclosed.

  Moreover, in the following Patent Document 2, a fastening tape comprising a base portion fixed to an opening portion of a packaging sheet in which absorbent articles are individually housed and packaged and a fastening portion having an adhesive layer is disposed, and the fastening tape is arranged. The base part of the product is fixed in the vicinity of the unsealed part of the packaging sheet, and the adhesive layer of the fastening part is attached to the upper surface of the fixed base part in a peelable manner, and the packaging sheet wrapped around the product after use is secured. An absorbent article that can be sealed by a portion is disclosed.

Japanese Patent Laid-Open No. 9-10259 JP 2004-49262 A

  However, in the individually absorbent article described in Patent Documents 1 and 2, the picking portion of the sealing tape that is picked by hand when opening is extended to the tip side of the adhesive surface of the sealing tape so as to be parallel to the adhesive surface. Therefore, there is a problem that the knob part is arranged so as to overlap the upper surface of the packaging sheet, and the knob part is difficult to pick with a finger when opening, and is difficult to open. This problem was even more so because the sealing tape itself was small.

  In addition, when the packaging sheet is a non-woven fabric, the fibers of the non-woven fabric adhere to the tape adhesive surface when peeling, so even when trying to reattach the adhesive surface of the peeled sealing tape to the outer surface of the packaging sheet at the time of disposal, Since the adhesiveness of the tape adhesive surface has been lowered, there has been a problem that the rolled state cannot be fixed.

  Accordingly, a main object of the present invention is to provide an individual absorbent article provided with a sealing tape that is easy to open at the time of opening and has a good adhesion with an adhesive layer when the used absorbent article is discarded.

In order to solve the above-mentioned problems, as the present invention according to claim 1, in an individual absorbent article in which the absorbent article is packaged with a packaging sheet and the opening side edge is fixed with a sealing tape,
The sealing tape includes a first pressure-sensitive adhesive layer that adheres to the one-side sheet across the opening-side edge, a second pressure-sensitive adhesive layer that adheres to the other-side sheet across the opening-side edge, and used A third pressure-sensitive adhesive layer for fixing and wrapping the absorbent article in the packaging sheet,
By folding the middle of the sealing tape to form an opening knob that rises outward from the outer surface of the packaging sheet, the disposal knob is continuously connected from the opening knob to the distal end side of the sealing tape. Forming the portion, the inner surface on one side of the folded portion of the opening knob is the third pressure-sensitive adhesive layer, the inner surface of the other side is detachably bonded to the third pressure-sensitive adhesive layer,
When opening the individual absorbent article, it is possible to open by picking the opening knob and pulling up the sealing tape, and when discarding the used absorbent article, hold the disposal knob. The individual absorbent article is characterized in that the third pressure-sensitive adhesive layer can be exposed by pulling toward the front end side.

  In the first aspect of the invention, as the sealing tape for fastening the opening side edge of the individual absorbent article, the first pressure-sensitive adhesive layer that adheres to the one side sheet across the opening side edge, and the opening side A second pressure-sensitive adhesive layer that adheres to the other side sheet across the edge, and a third pressure-sensitive adhesive layer for fixing by wrapping with a packaging sheet when the used absorbent article is discarded, By forming the opening knob that rises outward from the outer surface of the packaging sheet by folding the middle of the sealing tape, the disposal knob is continuously disposed from the opening knob to the front end side of the sealing tape. The inner surface on one side of the folded portion of the opening knob is used as the third pressure-sensitive adhesive layer, and the inner surface on the other side is detachably bonded to the third pressure-sensitive adhesive layer. . For this reason, when opening the individual absorbent article, the second pressure-sensitive adhesive layer adhered to the other side sheet can be peeled off and opened by picking up the opening knob and pulling up the sealing tape. As it becomes easier, when disposing of the used absorbent article, the folded state of the opening knob is released by picking the disposal knob and pulling to the tip side, and the adhesive layer on the inner surface side is exposed, Fastening by the newly exposed third pressure-sensitive adhesive layer is improved.

  As the present invention according to claim 2, the opening knob and the disposal knob have a relatively higher rigidity than the other parts, so that the angle formed by the opening knob and the disposal knob can be increased. The individual absorbent article according to claim 1, wherein the absorbent article is set at 90 degrees or more.

  In the invention according to the second aspect, by making the opening knob and the disposal knob relatively stiffer than the other parts, the opening knob is less likely to be broken toward the disposal knob and the opening knob is opened. Since the angle formed by the knob and the disposal knob is 90 degrees or more, both knobs are not easily confused, and each knob is easily pulled during opening and disposal.

  As the present invention according to claim 3, the sealing tape is folded inward at the tip of the disposal knob and is formed into a double sheet from the disposal knob to the opening knob. 2. The individually absorbent article according to any one of 2 is provided.

  In the invention of claim 3 above, the sealing tape is folded back inward at the tip of the disposal knob to form a double sheet from the disposal knob to the opening knob. The gripping portion is relatively stiffer than other portions, and the opposite surface side of the pressure-sensitive adhesive layer provided on the inner surface side of the opening gripping portion is the surface side of the sealing tape. When plastic is used as the substrate, it can be peeled off from the pressure-sensitive adhesive layer without any special peeling treatment.

  According to a fourth aspect of the present invention, in the sealing tape, a separate member having relatively high rigidity is used from the opening knob to the disposal knob. A packaged absorbent article is provided.

  In the invention of claim 4, by using another member having relatively high rigidity from the opening knob to the disposal knob as the sealing tape, the opening knob and the disposal knob are different from each other. It is formed with higher rigidity than the portion.

  As described above in detail, according to the present invention, it is possible to provide an individual absorbent article having a sealing tape that is easy to open at the time of opening and has a good fastening with an adhesive layer when the used absorbent article is discarded. Become.

It is a perspective view of the individual packaging state which shows the individual packaging absorbent article 1 which concerns on this invention. It is sectional drawing of the sealing tape 4. FIG. It is sectional drawing of the sealing tape 4 which shows the cancellation | release point of the folding state at the time of disposal. It is a perspective view of the sealing tape 4. FIG. It is sectional drawing of the sealing tape 4 which concerns on another form. 3 is a plan view showing a planar shape of the sealing tape 4. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, an individual absorbent article 1 according to the present invention includes an absorbent article 2, a packaging sheet 3 for individually packaging the absorbent article 2, and an opening-side edge 3 a of the packaging sheet 3. It is comprised from the sealing tape 4 which fastens. In addition, when the slip prevention adhesive layer at the time of attaching to underwear etc. is formed in the outer surface side of the said absorbent article 2, the said packaging sheet 3 of the area | region corresponding to the said slip prevention adhesive layer as needed. A release paper is fixed on the inner surface of the sheet (not shown).

  Examples of the absorbent article 2 include sanitary napkins, cage sheets, incontinence pads, medical pads, toiletries and the like. For example, a typical structure of a sanitary napkin includes a liquid-impervious back sheet made of a polyethylene sheet, a liquid-permeable front sheet that allows permeation of menstrual blood or a cage, and the like, and is interposed between the two sheets. An absorbent body made of cotton-like pulp or synthetic pulp, an encapsulating sheet surrounding the absorbent body for maintaining the shape of the absorbent body and improving diffusibility, and a pair of left and right disposed on both sides of the surface side It is mainly composed of the side nonwoven fabric.

  As the packaging sheet 3 for individually packaging the absorbent article 2, a material such as a nonwoven fabric, paper, or a plastic film can be used, but a highly flexible nonwoven fabric is preferable. The shape of the wrapping sheet 3 is larger than the width dimension in the folded state when the wing-shaped flap and the hip-hold flap are formed on both sides of the absorbent article 2, and the absorbent article 2. A rectangular sheet having a length slightly extending outward from at least one end portion in the longitudinal direction of the sheet.

  The individual packaging method of the absorbent article 2 using the packaging sheet 3 is that the absorbent article 2 having the anti-displacement adhesive layer covered with the release paper is disposed on the packaging sheet 3 as necessary, and the release paper and the packaging sheet 3 are disposed. Are firmly fixed with a hot melt adhesive or the like. Thereafter, the rear end side and the front end side of the absorbent article 2 are folded at a fold line position along the width direction of the absorbent article 2, and folded into a plurality of folds such as a four fold, and as shown in FIG. The side edge portions 3b and 3b having three openings are sealed by an appropriate sealing means such as embossing, heat fusion, and adhesive. Moreover, the opening side edge 3a of the packaging sheet 3 is sealed with a sealing tape 4 after being joined with an adhesive as necessary.

  As shown in FIG. 2, the sealing tape 4 has a pressure-sensitive adhesive layer 6 formed on one side surface of a base material 5 preferably made of plastic, polylaminated nonwoven fabric, nonwoven fabric, paper, or the like. Specifically, the first pressure-sensitive adhesive layer 6c that adheres to the packaging sheet 3 on one side across the opening side edge 3a, and the second pressure-sensitive adhesive that adheres to the packaging sheet 3 on the other side across the opening side edge 3a. It has the agent layer 6b and the 3rd adhesive layer 6a for wrapping and fixing with the packaging sheet 3 when discarding a used absorbent article. The sealing tape 4 is preferably provided at the center in the width direction of the packaging sheet 3 so as to extend outward from the opening side edge 3a.

  The sealing tape 4 has a knob that is folded into a predetermined shape on the distal end side from a portion bonded to the outer surface side of the packaging sheet 3. That is, as shown in FIG. 2, the middle of the continuously formed sealing tape 4 is folded to form an opening knob 7 standing outward from the outer surface of the packaging sheet 3, and this opening A disposal knob 8 is formed continuously from the knob 7 to the distal end side of the sealing tape 4. Here, the inner surface on one side of the folded portion of the opening knob 7 is the third pressure-sensitive adhesive layer 6a, and the inner surface on the other side is detachably bonded to the third pressure-sensitive adhesive layer 6a. Note that “continuously formed” means different sheets as shown in FIG. 5 in addition to the case where the sealing tape 4 is formed of one continuous sheet as shown in FIG. This includes the case where the two are connected at the tip portion to form a continuous shape.

  In the example shown in FIG. 2, a sealing tape 4 having an adhesive layer 6 formed on the entire surface of one side of a base material 5 made of plastic is folded back inward at the tip of a disposal knob 8 and the adhesive layer By joining 6 together, a double sheet is formed from the disposal knob 8 to the top of the opening knob 7. Then, by folding the double sheet with the folded end 4a inside the apex, the pressure-sensitive adhesive layer 6 located on the inner surface on one side of the folded portion becomes the above-mentioned third pressure-sensitive adhesive layer 6a, and its opposite surface Since it becomes the plastic base material 5 whose side is the tape surface, it can be peeled from the third pressure-sensitive adhesive layer 6a without performing a special peeling treatment. In addition, when it is desired to adjust the peelability of the plastic base material 5 or when the base material 5 is made of a material that does not exhibit the peelability with respect to the third pressure-sensitive adhesive layer 6a, the third pressure-sensitive adhesive layer 6a A peeling process such as silicon processing may be applied to the part to be bonded or the entire surface side of the substrate 5.

  When opening the individual absorbent article 1 provided with the sealing tape 4, as shown in FIG. 2, the sealing tape 4 is lifted by picking the opening knob 7 of the sealing tape 4 and pulling up the sealing tape 4. The second pressure-sensitive adhesive layer 6b can be peeled off from the packaging sheet 3 and opened. Compared with a conventional sealing tape in which the knob portion extends to the distal end side of the adhesive surface of the sealing tape and is provided in parallel with the adhesive surface, the opening knob 7 is provided to protrude outward. Therefore, the opening knob 7 is easy to pick when opening, and is easy to open.

  On the other hand, when disposing of the used absorbent article, the used absorbent article is wrapped and wrapped by the packaging sheet 3 after the new absorbent article 1 is taken out, and then disposed as shown in FIG. 3 (A). As shown in FIG. 3B, the folded state of the opening knob 7 is released to expose the third pressure-sensitive adhesive layer 6a on the inner surface by picking the knob 8 and pulling it toward the distal end. The 3rd adhesive layer 6a and the 2nd adhesive layer 6b peeled from the packaging sheet 3 at the time of opening are fixed to the outer surface side of the packaging sheet 3, and the rounded state is fixed. In this way, the second pressure-sensitive adhesive layer 6b fastened to the outer surface side of the packaging sheet 3 at the time of individual packaging is attached to the fibers of the packaging sheet 3 (nonwoven fabric) by peeling from the packaging sheet 3 at the time of opening, Although the adhesiveness at the time of re-adhesion is lowered, by exposing the new third adhesive layer 6a at the time of disposal, it is possible to satisfactorily fix the adhesive layer at the time of disposal.

  The dimensions of the sealing tape 4 will be described with reference to FIG. 4. The tape width a is 5 mm or more, and preferably 7 to 20 mm. The lengths b and c in the tape longitudinal direction of the discard knob 8 and the opening knob 7 are each 2 mm or more, preferably 3 to 20 mm. The length d in the tape longitudinal direction from the opening side edge 3a, which is the formation area of the second pressure-sensitive adhesive layer 6b, to the base end of the opening knob 7 is 5 mm or more, and preferably 7 to 15 mm. The length e in the tape longitudinal direction of the fixed portion of the first pressure-sensitive adhesive layer 6a that is fixed to the packaging sheet 3 on the base end side with respect to the opening side edge 3a is set to 5 mm or more, and is set to be longer than d. It is preferable to increase the adhesive strength.

  The position of the sealing tape 4 with respect to the packaging sheet 3 is arbitrary as long as the opening side edge 3a of the packaging sheet 3 can be sealed, but is preferably provided at the center in the width direction of the packaging sheet 3. Further, the third adhesive layer 6a formed on the inner surface of the opening knob 7 and the third adhesive layer 6a are arranged so that the folded state of the opening knob 7 can be easily released when the disposal knob 8 is picked and pulled at the time of disposal. It is preferable to set the adhesive strength between the packaging sheet 3 and the first pressure-sensitive adhesive layer 6c to be larger than the adhesive strength between the opposing surface formed so as to be peelable from the third pressure-sensitive adhesive layer 6a. . The adhesive strength (adhesive strength of the portion e) of the first pressure-sensitive adhesive layer 6c closer to the base end side than the opening-side edge 3a of the sealing tape 4 and the third pressure-sensitive adhesive layer 6a formed on the inner surface side of the opening knob 7 And the opposing surface formed so as to be peelable with respect to the third pressure-sensitive adhesive layer 6a (the adhesive strength of the portion c) are portions from the opening side edge 3a to the base end of the opening knob 7 respectively. It is preferable that the adhesive strength of the second pressure-sensitive adhesive layer 6b is larger than the adhesive strength of the portion d. In order to adjust such adhesive strength, the type of the pressure-sensitive adhesive layer 6 provided in each part can be changed, or the peeling process of the adhesive surface can be changed.

  In addition, as described above, the sealing tape 4 is folded inward at the tip of the disposal knob 8 and formed into a double sheet from the disposal knob 8 to the opening knob 7. The angle α formed between the opening knob 7 and the disposal knob 8 by making the knob 7 and the knob 8 for disposal relatively stiffer than other parts (parts other than the double sheet) (see FIG. 4) is set to 90 degrees or more. Since the opening knob 7 is formed to stand outward from the outer surface of the packaging sheet 3 as described above, the angle α is set to be less than 180 degrees.

  By the way, in order to make the opening knob 7 and the disposal knob 8 relatively stiffer than other parts, a double sheet is formed as described above, and as shown in FIG. 5 and the adhesive layer 6 are the base end side from the folded top portion of the unsealing knob 7 to a position slightly beyond the distal end side, and continuously in the middle of the unsealing knob portion 7 (folded back). A high-rigidity member 9 having a relatively higher rigidity than other parts (parts composed of the base material 5 and the pressure-sensitive adhesive layer 6) can be separately provided from the vicinity of the top part to the disposal knob 8. As the high-rigidity member 9, a member made of the same material that is thicker than the base material 5 of the sealing tape 4 can be used, or another material having high rigidity can be used. The high-rigidity member 9 is peeled off by silicon processing or the like, if necessary, partially on the surface facing the third pressure-sensitive adhesive layer 6a or on the entire surface facing the third pressure-sensitive adhesive layer 6a. To apply.

  As shown in FIG. 6, the planar shape of the sealing tape 4 is not only the rectangles (A) and (B), but also the ribbon shapes (C) and (D), (E) zigzag shape, (F ) It can also be an asymmetric type that is asymmetric in the tape width direction and / or the longitudinal direction, such as a corrugated shape. Here, in the case of the wide rectangle (B), the fixing property is improved as compared to the case of the narrow rectangle (A). Further, when the ribbon type or the asymmetric type is used, the design property can be imparted to the sealing tape 4. Furthermore, in the case of a ribbon type, it is preferable that the opening knob 7 is lengthened to have the same shape as the lower packaging sheet 3 and the part of the sealing tape 4 that is fastened. 3 can be covered with the opening knob 7.

  The manufacturing method of the said sealing tape 4 is the one side surface of the continuous sheet | seat of the base material which has the width | variety of the length direction of the sealing tape 4 which made the sealing tape 4 continue in the width direction (short direction). After forming the pressure-sensitive adhesive layer 6 and folding the continuous sheet in the width direction at a predetermined position to form the opening knob 7 and the disposal knob 8, the width of the predetermined sealing tape 4 (length in the short direction) ).

  DESCRIPTION OF SYMBOLS 1 ... Individual packaging absorbent article, 2 ... Absorbent article, 3 ... Packaging sheet, 4 ... Sealing tape, 5 ... Base material, 6 ... Adhesive layer, 6a ... 3rd adhesive layer, 6b ... 2nd adhesive Layer, 6c ... first adhesive layer, 7 ... opening knob, 8 ... disposal knob, 9 ... high rigidity member

Claims (4)

In an individual absorbent article in which the absorbent article is wrapped with a packaging sheet and the opening side edge is fixed with a sealing tape,
The sealing tape includes a first pressure-sensitive adhesive layer that adheres to the one-side sheet across the opening-side edge, a second pressure-sensitive adhesive layer that adheres to the other-side sheet across the opening-side edge, and used A third pressure-sensitive adhesive layer for fixing and wrapping the absorbent article in the packaging sheet,
By folding the middle of the sealing tape to form an opening knob that rises outward from the outer surface of the packaging sheet, the disposal knob is continuously connected from the opening knob to the distal end side of the sealing tape. Forming the portion, the inner surface on one side of the folded portion of the opening knob is the third pressure-sensitive adhesive layer, the inner surface of the other side is detachably bonded to the third pressure-sensitive adhesive layer,
When opening the individual absorbent article, it is possible to open by picking the opening knob and pulling up the sealing tape, and when discarding the used absorbent article, hold the disposal knob. The individually absorbent article, wherein the third pressure-sensitive adhesive layer can be exposed by pulling to the tip side.   The opening knob and the discard knob are relatively rigid compared to other parts, so that the angle formed by the opening knob and the discard knob is set to 90 degrees or more. Item 1. The individual absorbent article according to item 1.   The individual packaging absorption according to any one of claims 1 and 2, wherein the sealing tape is folded inward at a distal end of the disposal knob and is formed into a double sheet from the disposal knob to the opening knob. Sex goods.   The individual absorbent article according to any one of claims 1 and 2, wherein a separate member having relatively high rigidity is used for the sealing tape from the opening knob to the disposal knob.

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