WO2020241890A1 - 吸収性物品の包装構造体 - Google Patents

吸収性物品の包装構造体 Download PDF

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Publication number
WO2020241890A1
WO2020241890A1 PCT/JP2020/021489 JP2020021489W WO2020241890A1 WO 2020241890 A1 WO2020241890 A1 WO 2020241890A1 JP 2020021489 W JP2020021489 W JP 2020021489W WO 2020241890 A1 WO2020241890 A1 WO 2020241890A1
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WO
WIPO (PCT)
Prior art keywords
packaging structure
package
less
packaging
static friction
Prior art date
Application number
PCT/JP2020/021489
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
美奈 富田
坂　渉
拓也 幸田
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN202080040507.3A priority Critical patent/CN113905953B/zh
Publication of WO2020241890A1 publication Critical patent/WO2020241890A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/42—Applications of coated or impregnated materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form

Definitions

  • the present invention relates to a packaging structure for an absorbent article, and more particularly to a packaging structure for an absorbent article formed by housing the absorbent article in a package.
  • Patent Document 1 discloses a packaging structure in which an absorbent article is housed in a hexahedral package having a front surface, a back surface, two side surfaces, a top surface, and a bottom surface.
  • the packaging structure is transported to the store and displayed on the shelves of the store with the bottom of the package facing down, that is, vertically placed, or with the back of the package facing down, that is, in a flat stacking state. ..
  • a variety of absorbent articles can be recognized on each surface of the package so that information such as the type of the absorbent articles housed can be recognized regardless of the display state.
  • Information indicating the tape type, pants type, etc.) and size is displayed.
  • the present invention relates to a packaging structure for absorbent articles.
  • the packaging structure of the present invention comprises an absorbent article housed in a package.
  • the package is a hexahedron composed of a front surface, a back surface facing the front surface, a first side surface, a second side surface facing the first side surface, a top surface, and a bottom surface facing the top surface.
  • the coefficient of static friction between the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure is 0.25 or more.
  • FIG. 1 (A) is a perspective view showing the inside of the packaging structure of the absorbent article according to the first embodiment of the present invention
  • FIG. 1 (B) is the absorbent according to the first embodiment of the present invention.
  • FIG. 2 is a sectional view taken along line AA of FIG. 1 (B) according to the embodiment of the present invention.
  • FIG. 3A is a perspective view showing a state in which the packaging structure of the absorbent article according to the embodiment of the present invention is vertically placed
  • FIG. 3B is an absorption according to the embodiment of the present invention.
  • FIG. 4 is a diagram showing a method for measuring the coefficient of static friction.
  • FIG. 5 is a diagram showing a state of being housed in a corrugated cardboard box, which is an example of a body containing a plurality of packaging structures.
  • FIG. 6 is a perspective view showing a packaging structure of an absorbent article according to a fourth embodiment of the present invention.
  • FIGS. 7A and 7B are views showing how to evaluate the difficulty of collapsing the packaging structure.
  • 8 (A) and 8 (B) are views showing how to evaluate the ease of putting the packaging structure into the corrugated cardboard box.
  • the packaging structure may collapse during display.
  • the display method in which packages are stacked in a flat stacking state when a plurality of packages are moved in a stacked state or when the packaging structure is taken out from the display state, the display state of the packaging structure is disturbed or the load collapses. easy.
  • the present invention relates to a packaging structure capable of eliminating the above-mentioned drawbacks of the prior art.
  • the packaging structure 1 includes a plurality of absorbent articles 3 and a package 5.
  • the plurality of absorbent articles 3 are packaged in a package 5.
  • the absorbent article 3 is, for example, a diaper or a napkin.
  • the package 5 faces the front surface 7, the back surface 9 facing the front surface 7, the first side surface 11, the second side surface 13 facing the first side surface 11, the top surface 15, and the top surface 15. It is a hexahedron composed of a bottom surface 17.
  • Each surface of the package 5 includes a matte layer 19 on the outermost layer, and the first side surface 11 includes a matte layer 19 and a non-matte layer region 21a.
  • the package 5 has a non-matte layer region 21b on the front surface 7, a non-matte layer region 21c on the first side surface 11, and a non-matte layer region on the second side surface 13. 21d is provided with a non-matte layer region 21e on the top surface 15.
  • non-matte layer region 21a for example, the size and the number of a plurality of absorbent articles 3 packaged by the package 5 are described.
  • non-matte layer regions 21b to 21e for example, the logotype of the absorbent article 3 and the like are described.
  • the package 5 has a film base material layer 25 and an ink layer from the inner surface (absorbent article side surface 23) to the outer surface when used for the packaging structure 1. 27 and the mat layer 19 are laminated in this order.
  • the film base material layer 25 is a basic material for maintaining the shape and strength when the package 5 is used for the packaging structure 1.
  • the film substrate layer 25 is preferably made of a flexible and strong film material. Examples of the flexible and strong film material include polyethylene, polyamide, polyester, polybutylene terephthalate, polyethylene terephthalate and the like. Further, the film base material layer 25 may be a single layer or a laminated film having a plurality of layers made of the same or different materials.
  • the ink layer 27 is a layer for imparting information on the absorbent article 3 such as a pattern, a pattern, and characters to the package 5.
  • the material of the ink layer 27 is an ink composition.
  • the ink composition contains, for example, carbon black, diamine, polyol, curing agent, organic solvent and the like.
  • the curing agent is, for example, isocyanate.
  • the organic solvent is, for example, toluene.
  • the ink layer 27 can be formed by printing (applying) the above composition on the surface of the film base material layer 25 so as to display a desired pattern, pattern, characters, etc., for example, by a gravure printing method or the like. ..
  • the mat layer 19 is provided as the outermost layer of the package 5.
  • the mat layer 19 has fine irregularities on the surface of the package 5, and the coefficient of friction between the packages can be set to a desired value.
  • the mat layer 19 is a resin layer 31 in which the matting agent 29 is dispersed.
  • the matting agent is a resin layer. It is preferably contained in an amount of 1% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 15% by mass or less, based on the total weight of the matting agent and the resin.
  • the particle size of the matting agent is preferably 0.1 ⁇ m or more and 50 ⁇ m or less.
  • the matting agent 29 silica, alumina, calcium oxide, calcium carbonate, calcium sulfate, calcium silicate, and carbon black are preferable, and silica is more preferable.
  • the resin layer 31 is formed of, for example, an acrylic resin, an epoxy resin, a urethane resin, a polyolefin resin, a fluorine resin, a phenoxy resin, or a silicone resin.
  • the mat layer 19 has fine irregularities formed on the surface due to the plurality of matting agents 29 protruding outward from the resin layer 31. Friction between packages can be increased by this fine unevenness. Further, the density of the unevenness formed on the surface can be adjusted by adjusting the number of lines of the printing plate of the mat layer 19 and the density of the mat material, and the frictional force between the packages can be changed. When the number of printed lines of the mat layer 19 is increased, the frictional force is increased, and when the number of printed lines is decreased, the frictional force is decreased. Further, the frictional force for increasing the density of the unevenness of the mat layer 19 increases, and the frictional force decreases when the density of the unevenness is made sparse.
  • one packaging structure 1a and the other packaging structure 1b are, for example, display shelves of a store or the like (shown).
  • the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b are in contact with each other, and the bottom surfaces 17a and 17b are turned down, that is, vertically placed. It will be displayed at.
  • the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b are turned down, that is, in a flat stacking state. It is displayed on the shelves of stores.
  • the coefficient of static friction between the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b is a viewpoint of preventing the load from collapsing.
  • 0.25 or more, preferably 0.30 or more, and the upper limit is not particularly limited, but 0.50 or less is preferable, and 0.40 or less is more preferable from the viewpoint of ease of packaging. It is more preferably 0.35 or less, and preferably 0.25 or more and 0.50 or less, more preferably 0.30 or more and 0.40 or less, and more preferably 0.30 or more and 0.35 or less. ..
  • an external force is applied from a state where the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b are in contact with each other. Since it does not easily slip off, it does not easily collapse during display.
  • a plurality of packaging structures 1 as shown in FIG. 3A are displayed side by side, or as shown in FIG. 3B. It is conceivable to take out from the display state in which they are stacked side by side. More specifically, in the case of the display state shown in FIG. 3 (A), the adjacent packages are pulled out from the front row and taken out, and in the case of the display state shown in FIG. 3 (B).
  • the packaging structure 1 of the first embodiment when the packaging structure 1 of the first embodiment is taken out from the display state, the packaging structure is less likely to collapse and does not require time for reloading. Further, since the packaging structure 1 of the first embodiment does not easily disturb the display state, there is no problem that the appearance is not impaired and the collapsed packaging structure 1 becomes a shadow and the information of the content portion becomes difficult to see. .. In addition, the packaging structure 1 of the first embodiment can increase the purchasing motivation of the user by providing the mat layer 19 on the outermost layer of the package 5.
  • the above-mentioned static friction coefficient conforms to the JIS-K7125 plastic-film and sheet friction coefficient test method, and can be measured using, for example, a measuring device 37 as shown in FIG.
  • the measuring device 37 includes a test table 39, a pulley 41 installed on the test table 39, a wire 43 hung on the pulley 41, and a weight 45 attached to one end of the wire 43 and arranged on the test table 39.
  • the pulley 41 is a fixed pulley having a fixed axis of rotation.
  • the first sample 47 is fixed to the measurement surface (contact surface) of the weight 45.
  • the second sample 49 is fixed to the upper surface of the test table 39 facing the measurement surface (contact surface) of the weight 45 with a well-known fixture or the like provided on the test table 39.
  • the other end of the wire 43 is connected to a tensile tester (not shown) via a spring 51.
  • the spring 51 absorbs the impact when the weight 45 starts to move.
  • the tensile tester is, for example, an autograph (Shimadzu Corporation, model number AG-X).
  • the weight 45 has a weight of 190 g and has a measurement surface dimension of 30 mm ⁇ 100 mm (length ⁇ width) in a plan view. In the measurement surface dimension, the lateral direction is a dimension in the direction in which the weight 45 moves.
  • an air-through non-woven fabric (basis weight: 20 g / m2) is attached to the weight 45 side, which is the non-measurement surface of the first sample 47, and the first sample 47 is placed on the weight 45. Fix it.
  • an air-through non-woven fabric (basis weight: 20 g / m2) is attached to the test table 39 side, which is the non-measurement surface of the second sample 49, and fixed to the upper surface of the test table 39.
  • the horizontal dimension of the first sample 47 is the same size (100 mm) as the size of the measurement surface (contact surface) of the weight 45, and the vertical dimension is a size (60 mm) larger than the size of the measurement surface (contact surface) of the weight. Then, it was fixed around the weight in a vertically wound state.
  • the size of the portion of the weight located on the measurement surface (contact surface) is 30 mm ⁇ 100 mm (length ⁇ width) in a plan view.
  • the size of the second sample 49 is the same as or larger than the size of the measurement surface (contact surface) of the weight 45, and is, for example, 250 mm ⁇ 150 mm (length ⁇ width).
  • the packaging structure for cutting out the first sample When measuring the static friction coefficient between the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure, the packaging structure for cutting out the first sample and the packaging structure for cutting out the second sample.
  • the packaging structure for cutting out the first sample may be a different packaging structure from the above, if packaging structures having the same configuration are laminated side by side with the front orientation aligned or are planned to be laminated, one packaging structure is used.
  • the first sample may be cut out from either the front or the back surface of the above, and the second sample may be cut out from the other. If the matte area and the non-matte area are mixed on one or both of the front and back surfaces for measuring the coefficient of static friction of the package, the distance from the top surface side edge to the bottom surface side edge of each surface.
  • ⁇ S FS / FP ⁇ ⁇ ⁇ (1)
  • ⁇ S is a static friction coefficient
  • FS is a static friction force [N]
  • the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present invention.
  • a modified example of the embodiment of the present invention will be described below, but in the modified example described below, the portion exhibiting the same action and effect as that of the above-described embodiment is given the same reference numerals to detail the portion. The description is omitted, and the following description mainly describes the differences from the embodiments.
  • the static friction coefficient between the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b is the one packaging structure 1a. It is preferable that the coefficient of static friction between the first side surface 11a of the package 5a and the second side surface 13b of the package 5b of the other packaging structure 1b is greater than 0.05 or more from the viewpoint of preventing the load from collapsing. From the viewpoint of ease of taking the package 6, the static friction coefficient is preferably 0.5 or less.
  • the coefficient of static friction between the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b is 0.25 or more, preferably 0, as in the first embodiment. It is .30 or more, and the upper limit is not particularly limited, but 0.50 or less is preferable, 0.40 or less is more preferable, 0.35 or less is more preferable, and 0.25 or more and 0 is preferable. It is .50 or less, more preferably 0.30 or more and 0.40 or less, and more preferably 0.30 or more and 0.35 or less.
  • the coefficient of static friction between the first side surface 11a of the package 5a of one packaging structure 1a and the second side surface 13b of the package 5b of the other packaging structure 1b is preferably 0.05 or more, and is 0. .10 or more is more preferable, 0.50 or less is preferable, 0.30 or less is more preferable, and 0.05 or more and 0.50 or less is preferable. It is 10 or more and 0.30 or less.
  • the number of printed lines of each mat layer 19 of the first and second side surfaces 11a and 13b is 40% of the number of printed lines of the mat layer 19 of the front surface 7 and the back surface 9, respectively. It is preferably 50% or more, more preferably 60% or more, more preferably 90% or less, more preferably 80% or less, and 40%. It is preferably ⁇ 90%, more preferably 50-80%, and even more preferably 60-80%. That is, the number of printed lines of each of the matte layers 19 of the first and second side surfaces 11 and 13 is preferably 175 lines or more, more preferably 200 lines or more, and 240 lines or more per inch. Is more preferably 500 or less, more preferably 460 or less, further preferably 420 or less, and preferably 175 to 500, 200. The number is more preferably ⁇ 460, and even more preferably 240 to 420.
  • the packaging structure 1 of the second embodiment Since the packaging structure 1 of the second embodiment has the above-described configuration, the packaging structure 1 of the second embodiment is laminated and stacked to form a single row as shown in FIG. 3B.
  • the friction between the side of the package to be inserted and the side of the package stacked in the next row is the front of the stacked packages. Since it is smaller than the friction between the surface and the back surface (static friction coefficient), it can be smoothly inserted into the display shelf without collapsing the stacked packages to be inserted and the packaging structure displayed in the adjacent row, and the display work efficiency is good.
  • the user extracts the packaging structure 1 of one example, and the packaging structures 1 displayed in the adjacent row are extracted together. It is possible to prevent it from being stored.
  • the packaging structure 1 of the third embodiment has a static friction coefficient between the back surface 9a of the package 5a of one packaging structure 1a and the front surface 7b of the package 5b of the other packaging structure 1b.
  • Each of the first and second side surfaces 11a, 11b, 13a, 13b of one and the other packaging structures 1a and 1b, and the corrugated cardboard box 53 which is an accommodating body for accommodating a plurality of packaging structures in a laminated state. It is preferable that the coefficient of static friction between the packaging structure side surface 55, which is the surface facing the side surface, is larger than the static friction coefficient, from the viewpoint of making it easy to remove the packaging structures 1a and 1b from the corrugated cardboard box 53 without breaking them.
  • the coefficient of static friction between the packaging structure side surface 55 of the corrugated cardboard box 53 and the first and second side surfaces 11a, 11b, 13a, 13b of one and the other packaging structures 1a and 1b is 0.05 or more. It is preferably 0.10 or more, more preferably 0.50 or less, more preferably 0.35 or less, and 0.05 or more and 0.50 or less. It is preferable, and it is more preferable that it is 0.10 or more and 0.35 or less.
  • the corrugated cardboard box 53 is in a state as shown in FIG. 5 without breaking the display state of the plurality of flatly stacked packaging structures 1. Can be accommodated in. Therefore, it is easy to store the packaging structures in the corrugated cardboard box 53 in a stacked state in the production line.
  • the static friction value in the third embodiment can be obtained by cutting out the central region of the side surface of the package 5, collecting the first sample 47 and the second sample 49, respectively, and using the measuring method described in FIG. In this case, the cutout dimensions of the first sample 47 and the second sample 49 are the same as those of the above sample. Further, the first sample 47 is a portion without the mat layer 19, and the second sample 49 is a portion with the mat layer 19.
  • the front surface 7 and the back surface 9 of the package 5 are first composed of a rectangular mat layer extending from the first side surface 11 to the second side surface 13.
  • the first and second side surfaces 11 and 13 of the package 5 are provided with a plurality of second mat layer regions 59 made of a rectangular mat layer extending from the top surface 15 to the bottom surface 17.
  • the description of the first mat layer region 57 on the back surface 9 and the second mat layer region 59 on the second side surface 13 is omitted.
  • the packaging structure 1 of the fourth embodiment satisfies the following (formula) from the viewpoint of preventing the load from collapsing with a desired friction coefficient.
  • the average value of the horizontal dimensions of each mat layer region is 60% or more, where the shortest distance from the first side surface 11 to the second side surface 13 is 100%. It is preferable to have a desired friction coefficient from the viewpoint of preventing load collapse, more preferably 80% or more, further preferably 90% or more, and preferably 100% or less. It is preferably 60% or more and 100% or less, more preferably 80% or more and 100% or less, and further preferably 90% or more and 100% or less.
  • the vertical dimension (length from the top surface 15 to the bottom surface 17) of the first mat layer region 57 is set as a desired friction coefficient when the shortest distance from the top surface 15 to the bottom surface 17 is 100%. From the viewpoint of preventing collapse, each is 5% or more and 30% or less, preferably 5% or more and 20% or less, and more preferably 5% or more and 15% or less. Further, the total of the vertical dimensions of the plurality of first mat layer regions 57 is preferably 10% or more, more preferably 15% or more, still more preferably 15% or more from the viewpoint of obtaining a desired friction coefficient and preventing load collapse. It is 30% or more, preferably 80% or less, more preferably 75% or less, further preferably 70% or less, and preferably 10 to 80%, more preferably 15%. It is 75% or more, more preferably 30% or more and 70% or less.
  • the number of the first mat layer regions on the front surface 7 and the back surface 9 is preferably 2 or more, more preferably 15 or more, and 15 from the viewpoint of obtaining a desired friction coefficient and preventing load collapse.
  • the number is preferably 10 or less, more preferably 2 or more and 15 or less, and more preferably 4 or more and 10 or less.
  • the vertical dimension of the second mat layer region 59 is preferably 60% or more, preferably 80% or more, from the viewpoint that the average value of the vertical dimensions of each mat layer region is a desired friction coefficient and prevents load collapse. More preferably, it is more preferably 90% or more, more preferably 100% or less, and preferably 60% or more and 100% or less, and 80% or more and 100% or less. More preferably, it is 90% or more and 100% or less.
  • the lateral dimension of the second mat layer region 59 is preferably 5% or more, preferably 30% or less, and 20% or less, respectively, from the viewpoint of obtaining a desired friction coefficient and preventing load collapse. It is more preferably 15% or less, more preferably 5% or more and 30% or less, more preferably 5% or more and 20% or less, still more preferably 5% or more and 15% or less. Is.
  • the total lateral mating ratio of the second mat layer regions 59 on the first and second side surfaces 11 and 13, that is, the total lateral dimensions of the plurality of second mat layer regions 59 is the first mat layer region. It is 10% or more from the viewpoint of preventing the load from collapsing with a desired friction coefficient on the assumption that the lateral dimension of the above is smaller than the average value of the ratio of the ratio to the shortest distance from the first side surface 11 to the second side surface 13. It is preferably 15% or more, more preferably 30% or more, further preferably 80% or less, more preferably 75% or less, and more preferably 70% or less. It is more preferably 10 to 80%, more preferably 15% or more and 75% or less, still more preferably 30% or more and 70% or less.
  • the number of the second mat layer regions on the top surface 15 and the bottom surface 17 is preferably 3 or more, more preferably 15 or more, and 15 or more, from the viewpoint of obtaining a desired friction coefficient and preventing load collapse.
  • the number is preferably less than, more preferably 10 or less, preferably 2 or more and 15 or less, and more preferably 3 or more and 10 or less.
  • the packaging structure 1 of the fourth embodiment has the above-described configuration, when a plurality of packaging structures 1 are arranged side by side, the bottom surface of the package is the front surface of one package and the back surface of the other package. Since the friction in the direction from the top surface to the top surface is larger than the friction in the above direction between the side surface of one package and the side surface of the other package, the display state of the plurality of flatly stacked packaging structures 1 is not destroyed. , Can be housed in the cardboard box 53 in the state shown in FIG.
  • the pack pressure inside the package is preferably 1.2 kPa or more, preferably 1.5 kPa or more, from the viewpoint of preventing the load from collapsing and the ease of taking the package structure. Is more preferably 2.5 kPa or less, more preferably 2.2 kPa or less, and more preferably 1.2 kPa or more and 2.5 kPa or less, and more preferably 1.5 kPa or more and 2.2 kPa or less. Is.
  • the pack pressure inside the package was determined by measuring the compression characteristics with respect to the thickness of the diaper and converting it into a load corresponding to the thickness of the diaper inside the package.
  • the thickness of the diaper in the package was calculated from the package size and the number of sheets.
  • a packaging structure for an absorbent article in which the absorbent article is housed in a package wherein the package faces the front surface, the back surface facing the front surface, the first side surface, and the first side surface. It is a hexahedron consisting of a second side surface, a top surface, and a bottom surface facing the top surface, and the coefficient of static friction between the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure is , 0.25 or more, preferably 0.25 or more and 0.50 or less, more preferably 0.30 or more and 0.40 or less.
  • the coefficient of static friction between the back of the package of one packaging structure and the front of the package of the other packaging structure is the first side of the package of one packaging structure and the second of the packaging of the other packaging structure.
  • the packaging structure according to ⁇ 1> which is 0.05 or more larger than the static friction coefficient with the side surface, preferably 0.05 or more and 0.50 or less, and preferably 0.10 or more and 0.30 or less. body.
  • the static friction coefficient between the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure is such that the first and second side surfaces of the one and the other packaging structure are laminated with the packaging structure.
  • the packaging structure according to ⁇ 1> or ⁇ 2> which is smaller than the static friction coefficient between the first and second side surfaces of the housing to be housed in the state and the surface facing the packaging structure side.
  • the coefficient of static friction between the packaging structure side surface of the housing and the first and second side surfaces of one and the other packaging structure is as large as 0.05 or more, preferably 0.05 or more and 0.50 or less.
  • ⁇ 5> The packaging structure according to any one of ⁇ 1> to ⁇ 4>, wherein each surface of the package includes a mat layer having irregularities on the outermost layer.
  • the number of printed lines of the first and second side surface mat layers is 40% to 90%, preferably 50 to 80%, and more preferably 60 to 80% of the number of printed lines of the front and back mat layers.
  • the packaging structure according to one. ⁇ 8> The packaging structure according to ⁇ 7>, wherein the material of the film base material is one or more selected from polyethylene, polyamide, polyester, polybutylene terephthalate, and polyethylene terephthalate.
  • the mat layer is an acrylic resin, an epoxy resin, a urethane resin, a polyolefin resin, in which a matting agent selected from silica, alumina, calcium oxide, calcium carbonate, calcium sulfate, calcium silicate, and carbon black is dispersed.
  • the front and back surfaces of the package include a plurality of first mat layer regions consisting of mat layers extending from the first side surface toward the second side surface, and the first and second side surfaces of the package are the top surface.
  • the pack pressure inside the package is preferably 1.2 kPa or more, more preferably 1.5 kPa or more, preferably 2.5 kPa or less, and more preferably 2.2 kPa or less.
  • Example 1 A polyethylene film used as a film base layer for a hexahedral packaging structure, silica (matting agent), one of the resin layer materials used as the resin layer 31, and a plurality of absorbent articles (diapers) were prepared. .. Next, a mat layer having the same number of printed lines (400 lines) was formed on each surface of the film base material layer (polyethylene film) by using a matting agent and a resin layer material. Subsequently, a mat layer is formed on a polyethylene film to form a bag-shaped (storable shape) package, and a plurality of absorbent articles are housed in this package to form the packaging structure of Example 1. Manufactured.
  • Example 2 The same materials as in Example 1 were prepared. Next, a matte layer having the same number of printing lines (400 lines) is formed on the front surface, back surface, top surface, and bottom surface of the hexahedral polyethylene film using a matting agent and a resin layer material, and the first and first polyethylene films are formed. A matte layer having about 63% of the printing lines (250 lines) of the above four sides was formed on the side surface of No. 2 to form a package. Then, a plurality of absorbent articles were housed in the package to produce four packaging structures of Example 2.
  • a matte layer having the same number of printing lines 400 lines
  • a matte layer having about 63% of the printing lines (250 lines) of the above four sides was formed on the side surface of No. 2 to form a package. Then, a plurality of absorbent articles were housed in the package to produce four packaging structures of Example 2.
  • Example 3 The same materials as in Example 1 were prepared. Next, a plurality of first mat layer regions 57 as shown in FIG. 6 are formed on the front surface and the back surface of the hexahedral polyethylene film, and a plurality of first mat layer regions 57 are formed on the first and second side surfaces of the polyethylene film. The mat layer region 59 of 2 was formed to form a package. Then, a plurality of absorbent articles were housed in the package to produce four packaging structures of Example 3.
  • each lateral dimension of the first mat layer region 57 is 100% when the shortest distance from the first side surface to the second side surface is 100%, and the plurality of first mat layer regions 57
  • the total vertical dimension of the above was 60% when the shortest distance from the top surface to the bottom surface was 100%.
  • each vertical dimension of the second mat layer region 59 is 100% when the shortest distance from the top surface to the bottom surface is 100%, and the total of the horizontal dimensions of the plurality of second mat layer regions is It was 50% when the shortest distance from the first side surface to the second side surface was 100%.
  • Example 4 The same materials as in Example 1 were prepared. Then, a package having a higher mat density in the plurality of first mat layer regions 57 and the plurality of second mat layer regions 59 than in Example 3 was constructed. Then, a plurality of absorbent articles were housed in the package to produce four packaging structures of Example 4. Mat concentration was higher than that of Example 3 a matting agent content Tree fat layer.
  • Example 5 The same materials as in Example 1 were prepared. Then, as in Example 3, a plurality of first mat layer regions 57 are formed on the front surface and the back surface of the polyethylene film, and the first and second side surfaces form a non-matte package. Then, a plurality of absorbent articles were housed in the package to produce four packaging structures of Example 5. The pack pressure inside the package in the packaging structures of Examples 1 to 5 was 1.8 kPa.
  • Comparative Example 1 A hexahedral film substrate layer using a polyethylene film and a plurality of absorbent articles (diapers) were prepared. A package was constructed without forming a mat layer on this film base material layer. Next, a plurality of absorbent articles were housed in this package to produce four packaging structures of Comparative Example 1.
  • Comparative Example 2 The same materials as in Example 1 were prepared. Next, a second mat layer region 59 is formed on the front surface and the back surface of the hexahedral film base material layer using the polyethylene film of Example 3, and the first and second side surfaces of the hexahedral film base material layer are formed. A plurality of first mat layer regions 57 were formed to form a package. Subsequently, a plurality of absorbent articles were housed in the package to produce four packaging structures of Comparative Example 2.
  • each vertical dimension of the second mat layer region is 100% when the shortest distance from the top surface to the bottom surface is 100%, and the total of the horizontal dimensions of the plurality of second mat layer regions is It was 50% when the shortest distance from the first side surface to the second side surface was 100%.
  • each horizontal dimension of the first mat layer region is 100% when the shortest distance from the first side surface to the second side surface is 100%, and the vertical dimension of the plurality of first mat layer regions. The total was 60% when the shortest distance from the top surface to the bottom surface was 100%.
  • Evaluation 1 Evaluation of the difficulty of collapsing the packaging structure
  • the packaging structures of Examples 1 to 5 and Comparative Examples 1 and 2 are placed on a desk (not shown) at a height of about the waist of the tester.
  • An evaluation test was conducted in which four pieces were stacked in a flat stack, and hands were placed on both sides of the bottom packaging structure, and an external force was applied to move a distance of 50 cm within 5 seconds.
  • the evaluation test was repeated 5 times by the same tester, and the average value of the 4-step score was calculated.
  • the 4-step score is a judgment of the alignment of the packaging structure 1 before and after the movement based on the following criteria.
  • 1 means that the packaging structure stacked on the upper side collapses
  • 2 means that the packaging structure stacked on the upper side is greatly displaced
  • 3 means that the packaging structure stacked on the upper side is slightly displaced.
  • the aligned state of the packaging structure stacked on the upper side was maintained.
  • the size of the packaging structure 1 in which four were stacked was 50 cm ⁇ 38 cm ⁇ 35.5 cm (H ⁇ L ⁇ T in FIG. 7 (A)).
  • Evaluation 2 (Easy to put in cardboard box) As shown in FIG. 8A, four packaging structures 1 are stacked flat on the lid on one side of the cardboard box 53, and the front surface (top) of the bottom packaging structure 1 is stacked. An evaluation test was conducted in which the packaging structure 1 was pushed into the bottom surface 53a of the cardboard box 53 within 3 seconds with one hand attached to the surface 15) ((B) in FIG. 8). The evaluation test was repeated 5 times by the same tester, and the average value of the 4-step score was calculated. With the 4-step score, the alignment state of the packaging structure 1 at that time was judged according to the following criteria.
  • 1 means that the packaging structure stacked on the upper side collapses
  • 2 means that the packaging structure stacked on the upper side greatly shifts
  • 3 means the packaging structure stacked on the upper side.
  • the packaging structure stacked on the upper side was kept aligned.
  • the internal dimensions of the cardboard box were 51 cm ⁇ 39 cm ⁇ 36 cm (H ⁇ L ⁇ T in FIG. 8 (A)).
  • Table 1 The results of evaluations 1 and 2 are shown in Table 1 below together with the measurement results of the static friction coefficient of the packages of the packaging structures of Examples 1 to 5 and Comparative Examples 1 and 2.
  • A is the coefficient of static friction between the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure
  • B is the first package of one packaging structure.
  • C is the static friction coefficient between the packaging structure side surface of the cardboard box and the front and back surfaces of the packaging structure
  • D is the corrugated cardboard. The static friction coefficient between the packaging structure side surface of the box and the side surface of the packaging structure is shown.
  • the static friction coefficients A and B indicate the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure
  • the static friction coefficients C and D are the side surfaces of the package of one packaging structure. And the one on the side of the package of the other packaging structure.
  • the packaging structures of Examples 1 to 5 and the packaging structures of Comparative Examples 1 and 2 are compared, the packaging structures of Examples 1 to 5 are each a package of one packaging structure. Since the static friction coefficient between the back surface of the package and the front surface of the package of the other packaging structure is 0.25 or more, the packaging of the first embodiment is carried out from the flatly stacked display state as shown in FIG. 3 (B). From the results of evaluation 1, it was confirmed that the packaging structure 1 is unlikely to collapse when the structure 1 is pulled out in order from the highest or lowest structure.
  • the packaging structure of Example 2 is the back surface of the package of one packaging structure and the front surface of the package of the other packaging structure. Since the static friction coefficient between the two is greater than the static friction coefficient between the first side surface of the package of one packaging structure and the second side surface of the package of the other packaging structure by 0.05 or more, the stacking is flat. From the results of Evaluation 2, it was confirmed that the plurality of packaging structures 1 can be housed in the corrugated cardboard box 53 in the state shown in FIG. 5 without destroying the display state.
  • the packaging structure of Example 3 has a rectangular shape in which the front surface and the back surface of the package extend from the first side surface to the second side surface.
  • a plurality of first mat layer regions 57 composed of a mat layer having a shape are provided, and a plurality of second mat layer regions 59 composed of a rectangular mat layer extending from a top surface to a bottom surface are provided on the first and second side surfaces of the package. From the results of Evaluation 2, it was confirmed that the plurality of flatly stacked packaging structures 1 can be housed in the corrugated cardboard box 53 in the state shown in FIG. 5 without breaking the display state.
  • Example 3 Comparing the packaging structure of Example 3 and the packaging structure of Example 4, the static friction values of the first mat layer region 57 and the second mat layer region 59 of Example 4 are higher than those of Example 3. Since it is large, the result of evaluation 1 was confirmed. Comparing the packaging structure of Example 4 with the packaging structure of Example 5, the result of Evaluation 1 was confirmed in Example 5 because the static friction value of each side surface was lower than that of Example 4.
  • the packaging structure of the absorbent article of the present invention does not easily collapse in a stacked state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Wrappers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
PCT/JP2020/021489 2019-05-31 2020-05-29 吸収性物品の包装構造体 WO2020241890A1 (ja)

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