JP2016209126A - Absorbent article and production method of absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article and a production method thereof capable of preventing a display part of a tape from becoming faint or disappearing without reducing production speed of the absorbent article.SOLUTION: A production method of an absorbent article comprises: a step for preparing a tape comprising a peeling layer, an adhesive layer, and a film layer disposed between the peeling layer and the adhesive layer and containing a color development material; a display application step for irradiating the film layer containing the color development material with laser, for applying a display part for indicating a kind of the absorbent article to the tape; a step for cutting the tape individually on a production line which is the same with a production line for performing the display application step; and a step for attaching the tape to a packing sheet forming an external part of the absorbent article.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an absorbent article such as a panty liner, an incontinence pad and a sanitary napkin, and a method for producing the absorbent article.

  Absorbent articles such as panty liners, incontinence pads and sanitary napkins are known (Patent Document 1). The absorbent article described in Patent Document 1 is individually wrapped in a packaging sheet. The edge part of a packaging sheet is stuck with a part of packaging sheet with an adhesive tape. This prevents the packaging sheet from opening naturally. Moreover, patent document 1 is disclosing providing the adhesive tape with the performance display part matched with the absorption performance of the absorbent article. The performance display part is comprised from the pattern and / or symbol which show the absorption performance of an absorbent article with the content of a display element.

JP 2012-116493 A

  As described in Patent Document 1, a pattern and / or symbol may be attached to the adhesive tape. Instead, it is also conceivable to attach letters specifying the type of absorbent article to the adhesive tape.

  When manufacturing such an absorbent article, normally, the long adhesive tape to which the desired character, the pattern, and / or the symbol was attached periodically is prepared beforehand. And a long adhesive tape is cut | disconnected separately for every absorbent article on the manufacturing line of an absorbent article. The adhesive tape cut | disconnected separately is affixed on the packaging sheet which comprises the exterior of an absorbent article.

  Here, when the step of periodically giving the display portion to the tape is performed on a different production line from the step of cutting the tape individually, the tape is cut into an appropriate area avoiding the planned cutting position. It is difficult to provide a display unit. For this reason, when the tape is cut, display portions for characters, pictures, symbols, and the like may be divided along the way.

  Therefore, it is preferable that the step of providing the display portion on the tape is performed on the same line as the step of individually cutting the tape, that is, on the production line of the absorbent article. In an absorbent article production line, a large number of absorbent articles are produced at high speed. Therefore, when performing the step of providing the display unit to the tape on the production line of the absorbent article, it is desired to provide the display unit to the tape at high speed.

  Embossing is one of the means for attaching a display portion to a tape, but the embossing is relatively slow. Therefore, the production speed of the absorbent article is limited.

  As another means for attaching the display portion to the tape, it is conceivable to attach the display portion to the surface of the tape by ink jet printing. However, since the absorbent article may be carried in a bag or the like, the display portion on the surface of the tape may be rubbed and become thin or disappear.

  Therefore, an absorbent article that can prevent the display portion of the tape from being thinned or disappeared without reducing the production speed of the absorbent article, and a method for producing the absorbent article are desired.

  The manufacturing method of the absorbent article which concerns on 1 aspect provides the tape which has a peeling layer, an adhesion layer, and the film layer which is provided between the said peeling layer and the said adhesion layer, and contains a coloring material, and On the same production line as the production line for performing the display provision step for giving the display portion indicating the type of the absorbent article to the tape by irradiating the film layer containing the color former with a laser, and the display provision step And cutting the tape individually and attaching the tape to a packaging sheet constituting the exterior of the absorbent article.

  The absorbent article which concerns on one aspect has the packaging sheet which comprises the exterior of an absorbent article, and the tape attached to the said packaging sheet, The said tape is a peeling layer, an adhesion layer, and the said peeling layer And a film layer containing a coloring material provided between the adhesive layer and the adhesive layer, and the tape is applied by irradiating a laser on the film layer containing the coloring material. It is formed by cutting individually on the same production line as the production line that performs the laser irradiation, including a display portion indicating the type.

  ADVANTAGE OF THE INVENTION According to this invention, a desired display part can be attached | subjected to a tape on the production line of an absorbent article, without reducing the manufacturing speed of an absorbent article. In addition, it is possible to prevent the display portion of the tape from becoming thin or disappearing.

FIG. 1 is a plan view of the absorbent article in a developed state. FIG. 2 is a perspective view illustrating folding of the absorbent article. FIG. 3 is a plan view of the absorbent article in a state of being folded and wrapped in a packaging sheet. FIG. 4 is a cross-sectional view showing an example of a tape attached to the packaging sheet. FIG. 5 is a cross-sectional view showing another example of the tape attached to the packaging sheet. FIG. 6 is a flowchart showing a method for manufacturing an absorbent article according to the first embodiment. FIG. 7 is a flowchart showing a method for manufacturing an absorbent article according to the second embodiment.

  Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. The absorbent article of the present invention may be an arbitrary absorbent article such as a panty liner (clay sheet), a sanitary napkin, or an incontinence pad. In the following embodiments, a sanitary napkin will be described as an example of an absorbent article.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Configuration of Absorbent Article FIG. 1 is a plan view of the absorbent article in a developed state. FIG. 2 is a perspective view for explaining how to fold the absorbent article. FIG. 3 is a plan view of the absorbent article in a state of being folded and wrapped in a packaging sheet.

  The absorbent article 1 has a central region S1, a front region S2, and a rear region S3. The central region S1 is a region that is disposed in the crotch of the wearer and is a region that faces the excretion opening of the wearer, for example, the vaginal opening. The front region S2 is provided in front of the central region S1 in the longitudinal direction L of the absorbent article 1. The rear region S3 is provided on the rear side of the central region S1 in the longitudinal direction L of the absorbent article 1.

  The absorbent article 1 has a top sheet, a back sheet, and an absorber 30. The top sheet is a liquid-permeable sheet that allows liquid such as body fluid to pass through, and comes into contact with the skin of the wearer. The back sheet is a liquid-impermeable sheet that does not transmit liquid. The absorber 30 is provided between the top sheet and the back sheet. The absorber 30 is indicated by a broken line in FIG.

  In the present embodiment, the absorbent article 1 includes wing portions 43 and 44 that protrude outward in the width direction W of the absorbent body 30 orthogonal to the longitudinal direction L of the absorbent article 1. The wing parts 43 and 44 are provided in the central region S1. Instead of this, the absorbent article 1 may not include the wing portions 43 and 44.

  A wrapping sheet 70 is provided on the surface of the back sheet of the absorbent article 1 that faces away from the wearer's skin. The absorbent article 1 and the packaging sheet 70 are provided with fold lines L1 and L2. The fold lines L1 and L2 extend along the width direction W of the absorbent article 1. The absorbent article 1 is tri-folded along the fold lines L1 and L2 after the wing portions 43 and 44 are folded inward (see FIG. 2). The packaging sheet 70 constitutes the exterior of the absorbent article 1 in a state where the absorbent article 1 is folded (see FIG. 3). That is, the top sheet, the back sheet, the absorbent body 30, and the like of the absorbent article 1 are wrapped with the packaging sheet 70.

  A tape 75 is attached to the packaging sheet 70. The tape 75 may be an adhesive tape that can be attached to and detached from the packaging sheet 70. In a state in which the absorbent article 1 is folded, the tape 75 straddles one end in the longitudinal direction L of the packaging sheet 70 and another portion of the packaging sheet 70. Thereby, the absorbent article 1 and the packaging sheet 70 are not expanded naturally.

  A display portion 63 is provided on the tape 75. The display unit 63 includes characters, patterns, and / or symbols that indicate the type of the absorbent article 1. For example, the display part 63 may be comprised from the numerical value showing the length of the longitudinal direction L of the absorbent article 1. FIG. For example, in FIGS. 1-3, the numerical value of "290" attached | subjected to the tape 75 has shown that the length of the absorbent article 1 is 290 cm. Note that in FIGS. 1 and 2, some of the numbers are hidden behind the packaging sheet 70. Instead of the numerical value representing the length, the display unit 63 may be composed of characters “night” or “day” indicating that the absorbent article should be used when the excretion amount is large or small. Good. Instead, the display unit 63 may be composed of characters “with wings” or “without wings” indicating the presence or absence of the wing units 43 and 44. Instead of this, the display unit 63 may be configured with a numerical value indicating the amount of absorption of the absorbent article 1, for example, “80 cc” or “120 cc”. The display unit 63 is not limited to characters (including numerical values) but may be a symbol or a pattern that reminds the type of absorbent article. Furthermore, the display part 63 may be comprised from the arbitrary combinations of the above-mentioned character, symbol, and pattern.

  The user can grasp the type of the absorbent article 1 without developing the absorbent article 1 by looking at the display unit 63 attached to the tape 75. For example, even when the absorbent article 1 is stored individually or when the absorbent article 1 is individually carried, the user does not deploy the absorbent article 1 but develops a specific type of absorbent article. 1 can be selected. Moreover, since it is not necessary to expand the absorbent article 1 in order to grasp the type of the absorbent article 1, the absorbent article 1 can be kept clean.

  FIG. 4 is a cross-sectional view showing an example of the configuration of the tape 75 attached to the packaging sheet 70. The tape 75 includes a release layer 80, an adhesive layer 81, and a film layer 82 that includes a coloring material. The release layer 80 is formed from, for example, a silicone resin. The release layer 80 is exposed on the surface side of the tape 75. The adhesive layer 81 of the tape 75 is attached to the packaging sheet 70.

  The film layer 82 is provided between the release layer 80 and the adhesive layer 81. In the example shown in FIG. 4, the film layer 82 includes a first film layer 83, a color material layer 84, and a second film layer 85. The coloring material layer 84 only needs to contain a coloring material, and may be, for example, an ink layer containing a coloring material.

  FIG. 5 is a cross-sectional view showing another example of the configuration of the tape 75 attached to the packaging sheet 70. The tape 75 includes a release layer 80, an adhesive layer 81, and a film layer 82 that includes a coloring material. The release layer 80 is formed from, for example, a silicone resin. In the example shown in FIG. 5, the film layer 82 includes a coloring material. Specifically, the film layer 82 is formed, for example, by mixing a coloring material in the resin material constituting the film layer 82. Such a film layer 82 can be formed, for example, by mixing a coloring material in a molten resin material and then curing the resin material.

  The tape having the configuration shown in FIG. 5 does not have the coloring material layer 84 as shown in FIG. 4, and the coloring material is contained in the film layer 82. Since the film layer 82 is not composed of a plurality of layers including the color developing material layer, there is an advantage that the delamination is difficult when the adhesive layer 81 is peeled off.

  The aforementioned coloring material is a material that develops color by laser irradiation. The coloring material may be composed of a heat sensitive material, for example. The display unit 63 attached to the tape 75 is formed of a color developing material that develops color by laser irradiation. The color former is preferably a low-temperature color former that develops color at a relatively low temperature. In this case, since the coloring material can be colored with a relatively low energy laser, damage to the tape due to laser irradiation can be suppressed. A leuco dye can be mentioned as a color former that develops color with a relatively low energy laser. Further, as a color former, a developer may be added together with the leuco dye.

  Examples of the leuco dye include 3-isopentylethylamino-6-methyl-7-anilinofluorane, 3-dipentylamino-6-methyl-7-anilinofluorane, and 3-diethylamino-6-methyl-7. -Anilinofluorane, 3-diethylamino-7- (m-trifluoromethylanilino) fluorane, 3- (N-ethyl-p-toluidino) -7-anilinofluorane, 3-dibutylamino-6-methyl Examples include -7-anilinofluorane.

  As the developer, 4,4′-dihydroxydiphenylsulfone, 2,4′-dihydroxydiphenylsulfone, 4-hydroxy-4′-isopropoxydiphenylsulfone, bis (3-allyl-4-hydroxyphenyl) sulfone, p -Hydroxybenzoic acid benzyl ester and the like.

(2) Manufacturing method of absorbent article The surface sheet, back sheet, absorbent body, and packaging sheet constituting the absorbent article 1 can be manufactured in the same manner as the conventional manufacturing method. For example, a plurality of absorbers are arranged on the continuous web at intervals in the conveyance direction while conveying the continuous web constituting the top sheet. Then, the continuous body which the several absorptive article continued was formed by arrange | positioning the continuous web which comprises a back sheet on a continuous web. A continuous body is cut | disconnected for every absorbent article, and the packaging sheet 70 and the tape 75 are attached to an absorbent article.

  It should be noted that various types of absorbent articles can be manufactured on the same manufacturing line. For example, if the step which provides the wing parts 43 and 44 is performed, the absorbent article which has the wing parts 43 and 44 can be manufactured. And if the step which provides the wing parts 43 and 44 is stopped, the absorbent article which does not have the wing parts 43 and 44 can be manufactured with the same manufacturing line.

  Below, the manufacturing method of the absorbent article 1 is demonstrated in detail using FIG. FIG. 6 is a flowchart showing a method for manufacturing an absorbent article according to the first embodiment. In the method for manufacturing an absorbent article according to this embodiment, first, a long tape 75 is prepared. As described above, the tape 75 includes the release layer 80, the adhesive layer 81, and the film layer 82 provided between the release layer 80 and the adhesive layer 81. The film layer 82 includes a coloring material. However, the display part 63 which shows the classification of an absorbent article is not provided in the tape 75 at this stage.

  The long tape 75 is prepared in a wound state. At this time, the release layer 80 of the tape 75 is adhered to the adhesive layer 81 to protect the adhesive layer 81. The long tape 75 is installed on the same line as the production line of the absorbent article 1. Each step to be described later is performed while pulling out the long tape 75.

  Next, the display part 63 which shows the classification of the absorbent article 1 is provided to the tape 75 by irradiating a laser to the film layer 82 containing the coloring material of the drawn tape 75 (display providing step). Specifically, a plurality of display parts 63 are repeatedly formed in the transport direction of the tape 75. The coloring material is colored by the laser irradiation. By irradiating the laser with a desired shape, the display unit 63 representing the type of absorbent article to be manufactured can be formed.

  The laser is preferably irradiated from the peeling layer 80 side. The laser passes through the release layer 80 and reaches the film layer 82. As a result, the energy from the laser applied to the film layer 82 decreases. Even in this case, the colorant can be colored without excessively increasing the laser output (energy) by using a low temperature colorant that develops color at a relatively low temperature as the colorant. Thereby, the display part 63 can be clearly formed, suppressing the damage of the tape 75 by a laser.

  When changing the type of absorbent article to be manufactured, it is possible to easily change the characters, symbols, patterns, and the like constituting the display unit 63 simply by changing the settings of the laser device. That is, it is not necessary to replace the long tape 75 installed in the production line with another tape according to the type of absorbent article to be manufactured.

  Next, the tape 75 is cut individually on the same production line as the production line for performing the display providing step (cutting step). The cutting position of the tape 75 is positioned between the display parts 63 adjacent to each other. Since the display giving step and the cutting step are executed on the same production line, the cycle of forming the display unit 63 in the display giving step and the cycle of the cutting position of the tape 75 can be easily matched.

  And the tape 75 is attached to the packaging sheet 70 which comprises the exterior of the absorbent article 1 (tape attachment step). Note that the attachment of the tape 75 to the packaging sheet 70 may be performed after the tape 75 is cut individually, or may be performed while the tape 75 is cut individually.

  FIG. 7 is a flowchart showing a method for manufacturing an absorbent article according to the second embodiment. Description of matters similar to those in the first embodiment may be omitted. In the method for manufacturing an absorbent article according to this embodiment, first, a long tape 75 is prepared. The tape 75 to be prepared is the same as in the first embodiment. Each step to be described later is performed while pulling out the long tape 75.

  Next, the long tapes 75 are individually cut (cutting step). Next, the display part 63 which shows the classification of the absorbent article 1 is provided to the tape 75 by irradiating the laser to the film layer 82 containing the color developing material of each cut tape 75 (display providing step). The laser is preferably irradiated from the peeling layer 80 side. The timing of irradiating the tape 75 with the laser is positioned at the position of the tape 75 cut individually. Since the display giving step and the cutting step are executed on the same production line, the cycle of forming the display unit 63 in the display giving step and the cycle of the cutting position of the tape 75 can be easily matched.

  Next, the tape 75 is attached to the packaging sheet 70 constituting the exterior of the absorbent article 1 (tape attachment step). In the present embodiment, the display providing step is performed before the tape 75 is attached to the packaging sheet 70. Instead of this, the display providing step may be performed after the tape 75 is attached to the packaging sheet 70.

(3) Actions / Effects According to one embodiment, the display unit 63 is imparted to the tape 75 by irradiating the color forming material included in the film layer 82 of the tape 75 with a laser. Since the laser can be processed at high speed, the display portion 63 can be formed on the tape 75 at high speed. Therefore, even if a display provision step is performed on the same line as the production line of the absorbent article, the absorbent article 1 can be produced without reducing the production speed of the absorbent article 1. Further, even when the display unit 63 is composed of complicated characters and figures, the display unit 63 can be clearly formed by a laser.

  According to one embodiment, the coloring material that develops color by laser irradiation is sandwiched at least between the release layer 80 and the adhesive layer 81. Therefore, even if the tape 75 rubs against a bag or the like when carrying the absorbent article 1 individually, it is possible to prevent the display portion 63 indicating the type of the absorbent article 1 from being thinned or disappeared.

  According to one embodiment, when manufacturing the absorbent article 1, the step of individually cutting the tape 75 on the same production line as the production line that performs the display providing step is performed. For this reason, the display portion 63 to be applied to the tape can be reliably applied to an appropriate region that avoids the cutting position at which the tape 75 is cut. Thereby, it can suppress that the display part 63 showing the classification of the absorbent article 1 will be divided in the middle.

(4) Other Embodiments Although the present invention has been described in detail using the above-described embodiments, it is understood by those skilled in the art that the present invention is not limited to the embodiments described in this specification. it is obvious. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

  For example, the above-described method for forming the display portion on the tape can be applied to a diaper disposal tape or the like. The problem to be solved by the above-described invention may also exist in such a disposal tape. Therefore, it goes without saying that the above-described advantages can be obtained by applying the present invention to a disposable tape for diapers.

DESCRIPTION OF SYMBOLS 1 Absorbent article 63 Display part 70 Packaging sheet 75 Tape 80 Release layer 81 Adhesive layer 82 Film layer 83 containing a coloring material First film layer 84 Color developing material layer 85 Second film layer

Claims (2)

Providing a tape having a release layer, an adhesive layer, and a film layer provided between the release layer and the adhesive layer and containing a colorant;
A display imparting step of imparting to the tape a display portion indicating the type of the absorbent article by irradiating a laser on the film layer containing the color former;
Cutting the tape individually on the same production line as the production line performing the display providing step;
Attaching the tape to the packaging sheet constituting the exterior of the absorbent article;
The manufacturing method of an absorbent article containing this. A packaging sheet constituting the exterior of the absorbent article;
A tape attached to the packaging sheet,
The tape includes a release layer, an adhesive layer, and a film layer provided between the release layer and the adhesive layer and including a colorant,
The tape includes a display unit indicating the type of the absorbent article, which is provided by irradiating a film layer including the colorant, and individually on the same production line as the production line that performs the laser irradiation. An absorbent article formed by being cut into pieces.

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