WO2023127210A1 - 個装吸収性物品 - Google Patents
個装吸収性物品 Download PDFInfo
- Publication number
- WO2023127210A1 WO2023127210A1 PCT/JP2022/035628 JP2022035628W WO2023127210A1 WO 2023127210 A1 WO2023127210 A1 WO 2023127210A1 JP 2022035628 W JP2022035628 W JP 2022035628W WO 2023127210 A1 WO2023127210 A1 WO 2023127210A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- longitudinal direction
- joints
- packaging sheet
- absorbent article
- individually packaged
- Prior art date
Links
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Images
Classifications
-
- 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
Definitions
- the present invention relates to individually packaged absorbent articles.
- absorbent articles such as sanitary napkins, panty liners, and incontinence pads are individually wrapped and sealed with wrapping sheets for reasons such as hygienic storage and portability. , is provided as an individually packaged absorbent article (individually wrapped body).
- Individually packaged absorbent articles can be continuously manufactured on a manufacturing line.
- a long packaging sheet that serves as a packaging sheet (packaging material) is conveyed in the conveying direction, the absorbent articles are arranged intermittently one after another, and the packaging material is arranged so that two folding lines are formed along the conveying direction.
- the absorbent article is folded and wrapped, and the portion where the absorbent article is not present is hot-pressed between the pressurizing part of the first roll and the pressurizing part of the second roll, and separated along the orthogonal direction orthogonal to the conveying direction.
- It can be manufactured by forming a joint region, which is an aggregate of a plurality of joined portions, and cutting the long packaging sheet along the orthogonal direction at the center of the joint region (for example, Patent Document 1).
- a roll pressurizing unit having a surface shape corresponding to the joint area is pressed against the long packaging sheet folded so as to wrap the absorbent article.
- a bonding region is formed by
- the end portions in the lateral direction (conveyance direction) of the roll pressure unit tend to be pressed more strongly against the packaging sheet than the central portion in the lateral direction. Therefore, in the joint region formed at the edge, a difference occurs between the inner and outer joints in the width direction.
- the joint formed on the inner side in the width direction may become excessively thin or may have a hole in the joint, and the inner side of the joint area (the side near the center in the lateral direction) may be weak.
- the edge of the individually packaged absorbent article is pulled, the edge may be torn due to a cut along the longitudinal direction inside the joint region. In that case, the quality of edge sealing of the individually packaged absorbent article is impaired.
- an object of one aspect of the present invention is to improve the quality of edge sealing in individually packaged absorbent articles.
- One aspect of the present invention is an individually packaged absorbent article including a packaging sheet and an absorbent article individually packaged with the packaging sheet, wherein the packaging sheet is arranged in a longitudinal direction and a lateral direction orthogonal to the longitudinal direction. wherein the packaging sheet is folded in the longitudinal direction, each of the lateral edges is formed with a joint region along the longitudinal direction, and the joint regions are spaced apart in the lateral direction; an inner row having a plurality of rows of joints formed by joining packaging sheets together, wherein the plurality of rows are arranged innermost in the lateral direction and include a plurality of joints spaced apart in the longitudinal direction; and an outer row arranged laterally outside the inner row, wherein the total length of the joints per unit length in the longitudinal direction in the inner row is equal to the unit length in the longitudinal direction in the outer row less than the total length of said joints per ridge.
- FIG. 1 is a plan view of an individually packaged absorbent article according to one embodiment of the present invention
- FIG. FIG. 2 is a plan view of the individually packaged absorbent article of FIG. 1 in an unfolded state
- FIG. 2 is a sectional view taken along the line II of FIG. 1
- 2 is an enlarged view of portion II of FIG. 1
- FIG. FIG. 2 is a schematic diagram showing part of a manufacturing apparatus for individually packaged absorbent articles. It is a figure which shows the modification of a joining area
- FIG. 10 is a diagram showing another modification of the joint region;
- FIG. 10 is a diagram showing still another modification of the joint region;
- FIG. 10 is a diagram showing still another modification of the joint region;
- FIG. 1 shows a plan view of an individually packaged absorbent article 100.
- FIG. FIG. 2 is a plan view of the individually packaged absorbent article in FIG. 1 in an unfolded state, and shows a view from the inner surface of the packaging sheet 10 or from the skin side of the absorbent article 1 .
- FIG. 3 shows a cross section taken along line II of FIG.
- an individually packaged absorbent article 100 includes a packaging sheet 10 and absorbent articles 1 individually packaged by the packaging sheet 10.
- the packaging sheet 10 may be elongated and has a longitudinal direction D1 and a transverse direction D2 orthogonal to the longitudinal direction.
- the longitudinal direction D1 and the lateral direction D2 of the packaging sheet 10 correspond to the longitudinal direction and the lateral direction of the absorbent article 1, respectively.
- the individually packaged absorbent article 100 is one in which one absorbent article 1 is wrapped in one packaging sheet 10, but in which a plurality of absorbent articles are packed. good too.
- the absorbent article 1 wrapped by the packaging sheet 10 in this embodiment may be a flat and elongated article to be worn so as to face the discharge port for bodily fluids (menstrual blood, vaginal discharge, urine, etc.).
- Specific examples of the absorbent article 1 may be a sanitary napkin, a panty liner (a sheet for vaginal discharge), a pad for light incontinence, and the like. Embodiments are described herein based on the example of a sanitary napkin.
- the absorbent article 1 includes, for example, a liquid-permeable top sheet 3, a liquid-impermeable back sheet (not shown), and disposed between the top sheet 3 and the back sheet, as shown in FIG. and an absorbent body 4.
- a sheet material having at least water impermeability such as an olefin resin sheet such as polyethylene or polypropylene
- a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or a laminated sheet of a nonwoven fabric in which a waterproof film is interposed to ensure substantially liquid impermeability can be used.
- a material having moisture permeability may be used.
- a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like is preferably used as the top sheet 3.
- the material fibers that make up the nonwoven fabric include, for example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, blended fibers thereof, and natural fibers such as cotton. It can be used in combination of two or more.
- the absorbent body 4 is not limited as long as it is a material that can absorb and retain bodily fluids, but it preferably contains cotton pulp and a water-absorbent polymer.
- a water absorbent polymer super absorbent polymer (SAP), super absorbent polymer fiber (SAF) and combinations thereof can be used.
- SAP super absorbent polymer
- SAF super absorbent polymer fiber
- the pulp includes chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate.
- the thickness of the absorbent body 4 may be 0.5 to 25 mm.
- the absorbent body 4 can also have a structure in which a region corresponding to the body fluid outlet (body fluid outlet corresponding region) and a region behind the body fluid outlet corresponding region facing the groove of the buttocks are swollen.
- the absorbent body 4 has dimensions and a shape that does not protrude from the top sheet 3 and the back sheet. , heat sealing, ultrasonic sealing, or other bonding means.
- side sheets 7 , 7 may be provided along the longitudinal direction D1 at both ends in the lateral direction D2 on the outer sides of the absorber 4 .
- a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used as the side sheet 7.
- the absorbent article 1 is of a so-called wingless type without wings, but it may be configured as an article with wings having wings extending laterally. good.
- the wings may be formed by joining the sidesheets and the backsheet.
- the back sheet side of the absorbent article 1 (non-skin side, i.e., the side facing the underwear when worn) is provided with a sheet so as not to slip off the underwear when the absorbent article 1 is attached to the underwear.
- Anti-slip adhesive portions 9, 9, 9, . . . are formed continuously in the lateral direction D2. Therefore, even if the side portions of the absorbent article 1 are deformed in the horizontal direction D2 when the force from both legs is applied from both sides in the horizontal direction D2 when the absorbent article 1 is worn, the anti-slip adhesive portions 9, 9, 9, ... is hard to peel off from underwear. . . are formed apart from each other in the longitudinal direction D1. Therefore, the adhesive strength to underwear does not become excessively high, and the operation of peeling off the absorbent article 1 from the underwear can be performed smoothly.
- the anti-slip adhesive portions 9, 9, . . . can be formed by applying an adhesive.
- the type of adhesive is not particularly limited, but a hot-melt type adhesive is preferable because it is easy to handle.
- Styrenic polymers, tackifiers, plasticizers, and combinations thereof can be used as the main components of the adhesive.
- Styrene-based polymers include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, styrene-butadiene-styrene block copolymers, and the like.
- styrene-butadiene-styrene block copolymers are preferred in terms of good thermal stability.
- a tackifier and a plasticizer a solid thing can be used at normal temperature.
- tackifiers include C5-based petroleum resins, C9-based petroleum resins, dicyclopentadiene-based petroleum resins, rosin-based petroleum resins, polyterpene resins, and terpene phenol resins.
- plasticizers include monomer plasticizers such as triflesyl phosphate, dibutyl phthalate, and dioctyl phthalate, as well as polymer plasticizers such as vinyl polymers and polyesters.
- the total length of the absorbent article 1 can be 140 to 430 mm, and the width of the absorbent article 1 (the width of the main body excluding the wings if it has wings) can be 40 to 130 mm.
- the dimensions of the packaging sheet 10 depend on the size and shape of the absorbent article 1 to be packaged.
- the length in the lateral direction D2 (sometimes referred to simply as the width) may be 70-250 mm.
- the packaging sheet 10 has a rectangular shape when unfolded, but it may have a shape such as an oblong shape, for example.
- the material constituting the packaging sheet 10 is not particularly limited, and may be a resin film, nonwoven fabric, paper, or the like. Of these, when a resin film is used, even if the packaging sheet is printed, the outlines of the printed characters and patterns become clear, and the color development of the coloring agent is also good, so the design of the packaging sheet is improved. can be improved.
- resins used include polyolefins such as polypropylene and polyethylene, polyester, and polyvinyl alcohol.
- the resin film a stretched one is preferable.
- the resin film may be either a non-breathable film or a breathable film.
- the nonwoven fabric to be used is preferably a meltblown nonwoven fabric, a spunbond nonwoven fabric, or the like, and it is also possible to use a laminate obtained by combining a plurality of layers of these nonwoven fabrics.
- fibers constituting the nonwoven fabric may be polyolefins such as polypropylene and polyethylene, polyamides such as polyester and nylon, and the like.
- paper can refer to a sheet made by agglutinating plant fibers or other fibers with a glue.
- it can refer to a material mainly composed of vegetable fibers (pulp), for example, a material containing 50% or more, preferably 80% or more, vegetable fiber of the contained fibers.
- the types of pulp contained in the paper may include wood pulp, non-wood pulp, and waste paper pulp, which may be either mechanical pulp or chemical pulp. Additives may be added to the paper.
- paper used for the packaging sheet 10 include various types of paper such as western paper, Japanese paper, processed paper, and synthetic paper.
- unprocessed or processed paper conventionally used for other purposes such as newsprint, printing paper (including high-quality paper), writing paper, drawing paper, wrapping paper, tissue paper, miscellaneous paper, etc. can also be used as When thin paper is used, it may be thin imitation paper, Indian paper, rice paper, glassine paper, tissue paper, toilet paper, filter paper, or the like.
- one packaging sheet 10 may be a single-layer sheet made of the above materials, or one packaging sheet 10 may be made by laminating a plurality of layers made of different materials. It may be a laminated sheet consisting of For example, it may be a sheet in which a resin film and paper are laminated.
- the inner surface of the packaging sheet 10 may be subjected to peeling treatment.
- the release treatment may be a process of applying a liquid release agent (mold release agent) containing, for example, silicone-based resin, paraffin-based resin, fluororesin, or the like. . . on the back surface of the absorbent article 1 can be brought into direct contact with the inner surface of the packaging sheet 10 by the peeling treatment of the packaging sheet 10. There is no need to provide a separate release sheet between the The peeling treatment to the packaging sheet 10 is preferable because the number of parts can be reduced.
- the release agent When the release treatment is performed by applying a release agent, the release agent preferably has a basis weight of 0.10 to 5 g/m 2 , more preferably 0.2 to 2 g/m 2 . .
- the release agent when the packaging sheet is subjected to a peeling treatment, a larger pressure is applied when forming the bonding area at the edge for sealing, compared to the case of using a packaging sheet that has not been subjected to the peeling treatment.
- the joints are likely to become fragile due to, for example, holes being formed in the joints, increasing the possibility that the packaging sheet 10 will be cut along the inner row of the joints. can be reduced (more on that below).
- the absorbent article 1 is wrapped together with the packaging sheet 10 by being folded. 2 showing the unfolded state of the individually packaged absorbent article 100, the individually packaged absorbent article 100 includes the absorbent article 1 on the inner surface of the packaging sheet 10, the back sheet of the absorbent article 1, or the offset sheet.
- the packaging sheet 10 and the absorbent article 1 are placed so that the adhesive portions 9, 9, . . . are folded together in the longitudinal direction D1.
- the area folded along the first folding line F1 is the first area R1 including one end 11 in the longitudinal direction D1 of the packaging sheet 10
- the area folded along the second folding line F2 is the packaging sheet.
- the packaging sheet 10 is the second region R2 including the other end 12 in the longitudinal direction D1, and the region between the first region R1 and the second region R2 is the third region R3.
- the packaging sheet 10 is folded in three (folded in three), that is, the second region R2 is folded first, and the first region R1 is folded so as to overlap the outer surface of the second region R2. . Then, with the packaging sheet 10 folded, both edges 15, 15 in the lateral direction D2 are sealed along the longitudinal direction D1.
- a pouch tape 30 is provided for fixing the first region R1 to the second region R2.
- Such a packaging form by folding the packaging sheet 10 in three or more and sealing the edges 15, 15 is relatively simple. Moreover, the absorbent article 1 can be hygienically wrapped, and the absorbent article 1 can be easily taken out. Note that the folding style is not limited to three-folding, and may be four-folding or more, or two-folding.
- both edges 15, 15 of the individually packaged absorbent article 100 are each sealed over the longitudinal direction D1.
- the term “sealing” does not mean that the packaging sheet 10 is closed completely airtightly, but rather the packaging sheet 10 is closed so that the absorbent article 1 is not slipped out of the packaging sheet 10 . It refers to the closing of the edges 15, 15 in the lateral direction D2 to maintain the folded state, or its closed state.
- the sealing of the edge 15 is formed by a joint region 20 formed over the entire length of the individually packaged absorbent article 100 in the longitudinal direction D1, as shown in FIG.
- the joint region 20 may be formed from a plurality of joints formed by joining the packaging sheets 10 together in the thickness direction.
- FIG. 4 shows an enlarged view of portion II of edge 15 of individually packaged absorbent article 100 of FIG.
- the joint region 20 includes a plurality of joints 23, 23, . . . that are spaced apart from each other.
- the joint portions 23, 23, . . . are portions where the packaging sheets 10 are joined together in the thickness direction.
- portions other than the joined portions 23, 23, ... in the joined region 20 are non-joined portions 24 where the packaging sheets 10 are not joined.
- the joints 23, 23, . . . are formed apart from each other, and in the example shown in FIG. As a result, especially when the joint is formed by welding, it is possible to prevent the edge 15 from becoming excessively hard and impairing the feel compared to the case where the joint is formed over the entire area of the joint region 20. ⁇
- the form of the joints 23, 23, ... by joining is not limited, for example, they are formed by pressing and/or heating the stacked packaging sheets 10 as described above.
- the packaging sheet 10 has a material containing a resin film and/or resin fibers, it is preferably formed by heat sealing or ultrasonic sealing. Formation by fusion bonding of the joints 23, 23, . . . is relatively simple and can form reliable joints. It can also be formed by a mechanical joining method such as crimping, and such a joining method is preferable when the packaging sheet 10 includes paper. Note that an adhesive or the like may be used instead of or in addition to the above joining method.
- the joints 23, 23, ... may be arranged side by side in the longitudinal direction D1 to form a row.
- the joint region 20 includes a plurality of rows in which the joint portions 23, 23, . . . are arranged along the longitudinal direction D1. Since the bonding regions 20 are formed as a plurality of rows aligned in the lateral direction D2, the edge portion 15 can be bonded in a plurality of steps in the lateral direction D2 or in a plurality of positions in the lateral direction D2. 15 can be sealed more reliably.
- the plurality of rows included in the joint region 20 are an inner row 25 which is the innermost row in the horizontal direction D2 and an inner row 25 arranged outside the inner row 25 in the horizontal direction D2. It includes an outer row 26 with a There may be one or more outer rows 26 . Outer rows 26 may include four outer rows 26a, 26b, 26c, and 26d, as in FIG.
- FIG. 5 shows an example of a bonding area forming device 40 used in a manufacturing line for individually packaged absorbent articles.
- the upper diagram of FIG. 5 is a schematic diagram of the bonding area forming apparatus 40 viewed from the side, and the lower diagram is a schematic diagram of a continuous body of individually packaged absorbent articles being transported in the upper diagram and viewed from above. It is a diagram.
- the absorbent articles 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5 are sequentially arranged at intervals in the conveying direction Dt, and are sequentially folded along two folding lines along the conveying direction Dt to wrap the absorbent articles 1, 1, . . .
- the continuous body of individually packaged absorbent articles is passed between, for example, a pair of rolls 41 and 42, and the packaging sheets 10 are joined at positions between the absorbent articles 1, 1, . . . . along the orthogonal direction Dv perpendicular to the transport direction Dt are thereby formed.
- One roll 41 is provided with pressurizing portions 41a, 41a, .
- the other roll 42 is provided with pressure sections 42a, 42a, . . . facing the pressure sections 41a, 41a, . . On the surfaces of the pressure portions 41a, 41a, . . . It can be assumed not to be provided.
- the long packaging sheet 10a is sandwiched from both sides by the pressurizing part 41a of the roll 41 and the pressurizing part 42a of the roll 42, and is pressed and/or heated, thereby joining including a plurality of joints.
- Regions 20, 20 are formed.
- the joint region forming device 40 simultaneously forms the joint regions 20, 20 of the adjacent edge portions 15, 15 of the two continuous individually packaged absorbent articles 100, 100 before cutting. After forming the joining regions 20, 20, .
- individual packaged absorbent articles 100, 100, . . . can be obtained.
- the form of cutting is not particularly limited, but cutting can be performed by passing between a roll having a predetermined cutter on its surface and a roll capable of receiving the cutter.
- the joint portions 23, 23, . . . and tend to be formed under stronger pressure than .
- the joint region 20 is formed by a pair of rolls 41 and 42 as shown in FIG.
- the portions located at the ends in the lateral direction D2 are more likely to enter deeply from the surface of the packaging sheet 10 in the thickness direction than the central portion in the lateral direction D2.
- the planned formation position of the inner row 25 in the packaging sheet 10 is close to the center of the individually packaged absorbent article 100 in the lateral direction D2, that is, close to the place where the absorbent article 1 is arranged, Due to the thickness of the product 1, gaps are likely to occur between the packaging sheets 10 to be joined.
- the thickness of the joints 23, 23, . . . , the joints 23, 23, . . . become fragile. Then, the joints 23, 23, . . . , along the inner row 25, the edge 15 may be cut off and the quality of the sealing of the edge 15 may be compromised.
- the sum of the joint portions 23, 23, ... per unit length in the longitudinal direction D1 in the inner row 25 The length is smaller than the total length of the joints 23, 23, . . . per unit length in the longitudinal direction D1 in the outer row 26.
- the inner row 25 and the outer row 26 are arranged differently in the longitudinal direction D1 of the joints 23, 23, . . .
- a large number of non-joint portions 24 can be secured in the longitudinal direction D1. Even if the joints 23, 23, . . . can be prevented from breaking or avoiding. Therefore, the sealing quality of the edge portion 15 can be ensured.
- the value of the ratio of the length N5 of the longitudinal direction D1 of the non-joint portions 24 between the joint portions 23 to the length B5 of the longitudinal direction D1 of one joint portion 23 may preferably be from 0.5 to 10, more preferably from 2 to 8.
- a ratio value of 0.5 or greater can be more effective in preventing cuts or tears that may occur along the inner row 25, such as when the edge 15 is pulled during or after manufacture.
- the value of the ratio is 10 or less, the original function of the joint portions 23, 23, .
- the length N5 of the non-joint portion 24 between the joint portions 23 and 23 in the longitudinal direction D1 is also referred to as the interval between the joint portions 23 and 23 in the longitudinal direction D1.
- the length B5 in the longitudinal direction D1 of one joint 23 in the inner row can be preferably 0.5 to 5 mm.
- the length B5 can be preferably 0.5 to 5 mm.
- the pitch p5 between the joint portions 23, 23, . . . is preferably large. . . in the inner rows 25 can be formed relatively sparsely, so that the effect of preventing the packaging sheet 10 from being cut or torn along the inner rows 25 can be improved. can be done.
- the length B6 in the longitudinal direction D1 of one joint 23 in the outer row 26 may be the same as or different from the length B5 in the longitudinal direction D1 of the joints 23, 23, .
- the connection between them becomes more reliable. Therefore, even if the conditions for forming the bonding region 20 are slightly relaxed, the sealing of the edge can be maintained.
- the length N6 in the longitudinal direction D1 of the non-joint portion 24 between the joint portions 23, 23 in the outer row 26 (interval between the joint portions 23, 23 in the longitudinal direction D1) N6
- the length in the longitudinal direction D1 of the non-joint portion 24 between may be the same as or different from N5, but the value (N6) in the outer row 26 is If the value (N5) in the inner row 25 is smaller than the value (N5), the bonding of the packaging sheets is ensured, so even if the forming conditions are somewhat loosened when forming the bonding region 20, the sealing of the edges can be maintained, which is preferable.
- each value is provided over the entire longitudinal direction D1 of the joint region 20.
- the total length of the joints 23 per unit length in the longitudinal direction D1 in the inner row 25 is the unit length in the longitudinal direction D1 in the outer row 26. It is smaller than the total length of the contact joints 23, 23, .
- the joints 23, 23, ... included in the inner row 25 and the joints 23, 23, ... included in the outer row 26 are each longitudinally They are arranged at the same pitch in D1.
- the pitch of the joints 23, 23, . . . included in the row need not be the same.
- the three joints 23, 23, 23 are arranged at a small pitch p6, and such three joints 23, 23 , 23 and the joint portion 23 adjacent to the end joint portion 23 may be arranged at a large pitch p6′.
- a set of three joints 23, 23, 23 arranged at an interval N6 in the longitudinal direction D1 is arranged in the longitudinal direction D1. They are arranged in the direction D1 with an interval N6′ larger than the interval N6.
- plan view shape of one joint portion 23 is circular.
- the plan view shape of one joint 23 is not limited to a square as shown in FIG. In addition to squares and circles, it may be quadrilaterals other than squares, such as rectangles, polygons other than quadrilaterals, ellipses, or other shapes (stars, hearts).
- the joints 23 included in the outer rows 26 may be continuous in the longitudinal direction D1 over the entire length of the joint region 20 in the longitudinal direction D1. That is, the length N6 in the longitudinal direction D1 of the non-joint portion 24 between the joint portions 23, 23 in the outer row 26 (interval in the longitudinal direction D1 between the joint portions 23, 23) may be zero.
- the bonding strength between the packaging sheets 10 in the outer row 26 can be improved, the pressure applied to form the bonding regions 20 using the bonding region forming device 40 (FIG. 5) or the like can be reduced as a whole. Therefore, the pressure applied to form the joints 23, 23, . . . included in the inner row 25 can also be reduced, and the joints 23, 23, . can be prevented.
- FIG. 8 shows an example in which the shape of one joint 23 differs between the joints 23, 23, ... included in the inner row 25 and the joints 23, 23, ... included in the outer row 26.
- the planar view shape of the joint portion 23 in the inner row 25 is circular
- the planar view shape of the joint portion 23 in the outer row 26 is a rectangle having a long side in the longitudinal direction D1.
- the size and dimensions of one joint 23 may differ between the inner row 25 and the outer row 26 .
- one joint portion 23 may be an elongated shape, and the center line of the width thereof may be arranged so as to form an angle and incline with respect to the longitudinal direction D1.
- the joint 23 shown in FIG. 9 has an elongated parallelogram shape in plan view. In the case of such inclined joints 23, since the extension range in the lateral direction D2 by one joint 23 is widened, it is possible to form more reliable joints in the lateral direction D2 between the packaging sheets 10 even with a small number of rows. can.
- the joints included in the inner row 25 are circular in plan view (FIG. 6), and the joints included in at least one outer row 26 are elongated.
- the longitudinal direction (the center line in the width direction) of 23 may be inclined with respect to the longitudinal direction D1 of the packaging sheet 10 (FIG. 9).
- An aspect according to Supplementary Note 1 is an individually packaged absorbent article including a packaging sheet and an absorbent article individually packaged with the packaging sheet, wherein the packaging sheet has a longitudinal direction and a lateral direction perpendicular to the longitudinal direction. wherein the packaging sheet is folded in the longitudinal direction, each of the lateral edges is formed with a joint region along the longitudinal direction, and the joint regions are spaced apart in the lateral direction; an inner row having a plurality of rows of joints formed by joining packaging sheets together, wherein the plurality of rows are arranged innermost in the lateral direction and include a plurality of joints spaced apart in the longitudinal direction; and an outer row arranged laterally outside the inner row, wherein the total length of the joints per unit length in the longitudinal direction in the inner row is equal to the unit length in the longitudinal direction in the outer row less than the total length of said joints per ridge.
- the joint region at the edge has a plurality of rows of joints spaced apart in the longitudinal direction. Since the bonding area is formed from a plurality of rows, the edge can be bonded in multiple stages in the lateral direction, and the sealing of the edge is more reliable.
- the joints in the inner row located on the innermost side in the lateral direction are pressed more strongly than the joints in the outer row located on the outer side in the lateral direction. tend to form Therefore, the thickness of the joint portion on the inner side in the width direction of the joint region may become excessively thin, or a hole may be formed in the joint portion.
- the inner row of the joints acts like a perforation, so that the inner end of the joint region (the end near the center in the lateral direction) tends to tear the packaging sheet along the longitudinal direction. Edges may come off during or after manufacture of the article, compromising the seal.
- the total length of the joints per unit length in the longitudinal direction in the inner row of the joints is the unit length in the longitudinal direction of the outer row of the joints laterally outside the inner row. less than the total length of the joints per hit.
- a portion where the packaging sheet is not joined i.e., a non-joined portion, is sufficiently secured in the longitudinal direction, so that the joined portion may be formed by strong pressure and its thickness may be excessively thin, or the through hole may be formed. Even if it is, a break along the inner row is less likely to occur. Therefore, it is possible to prevent the edge sealing from being damaged during or after the manufacture of the individually packaged absorbent article.
- the joint region has a non-joined portion that is not joined, and in the inner row, the length of the non-joined portion in the longitudinal direction with respect to the length of the joint portion in the longitudinal direction
- the length ratio value is 0.5-10.
- the ratio of the length of the non-joint portion to the length of the joint portion in the longitudinal direction in the inner row ((length of non-joint portion)/(length of joint portion)) is within a predetermined range, the original function of the joint, which is to join and fix the packaging sheets together, is secured at the inner position of the edge, while making it difficult for breaks along the inner row to occur.
- the outer row includes a plurality of joints spaced apart in the longitudinal direction, and the longitudinal pitch of the joints in the inner row is equal to the longitudinal pitch of the joints in the outer row. greater than the direction pitch.
- the length in the longitudinal direction of the joints in the outer row is equal to or greater than the length in the longitudinal direction of the joints in the inner row.
- the packaging sheets can be more reliably joined to each other in the outer row. Therefore, sealing can be ensured without greatly increasing the joint strength of the entire joint region, so that the pressure applied to the packaging sheet for forming the joint region can be suppressed. This also prevents the joints in the inner row from becoming excessively thin or perforating the joints per se, and improves the quality of the sealing at the edges.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Packages (AREA)
Abstract
Description
付記1に係る態様は、包装シートと、前記包装シートにより個装された吸収性物品とを含む個装吸収性物品であって、前記包装シートは、長手方向と前記長手方向に直交する横方向とを有し、前記包装シートは前記長手方向に折り畳まれ、前記横方向の縁部にそれぞれ、前記長手方向に沿って接合領域が形成され、前記接合領域が、前記横方向に離間した、前記包装シート同士が接合されてなる接合部の列を複数有し、前記複数の列が、前記横方向の最も内側に配置され、前記長手方向に離間した複数の接合部を含む内列と、当該内列より前記横方向外側に配置された外列とを有し、前記内列における前記長手方向の単位長さ当たりの前記接合部の合計長さが、前記外列における前記長手方向の単位長さ当たりの前記接合部の合計長さより小さい。
付記2に係る態様では、前記接合領域が、前記接合がされていない非接合部を有し、前記内列において、前記接合部の前記長手方向の長さに対する前記非接合部の前記長手方向の長さの比の値が0.5~10である。
付記3に係る態様では、前記外列が、前記長手方向に離間した複数の接合部を含み、前記内列における前記接合部の前記長手方向のピッチが、前記外列における前記接合部の前記長手方向のピッチより大きい。
付記4に係る態様では、前記外列における前記接合部の前記長手方向の長さが、前記内列における前記接合部の前記長手方向の長さ以上である。
付記5に係る態様では、前記接合部が融着によって形成されている。
付記6に係る態様では、前記包装シートの内面に剥離処理が施されている。
3 トップシート
4 吸収体
7 サイドシート
9 ズレ止め用粘着部
10 包装シート
10a 長尺状包装シート
11 長手方向の一端
12 長手方向の他端
15 縁部
20 接合領域
23 接合部
24 非接合部
25 接合部の内列
26、26a、26b、26c、26d 接合部の外列
40 接合領域形成装置
41、42 ロール
41a、42a ロール加圧部
100 個装吸収性物品
231 接合部
D1 包装シートの長手方向
D2 包装シートの横方向
F1 第1折り線
F2 第2折り線
R1 第1領域
R2 第2領域
R3 第3領域
Claims (6)
- 包装シートと、前記包装シートにより個装された吸収性物品とを含む個装吸収性物品であって、
前記包装シートは、長手方向と前記長手方向に直交する横方向とを有し、
前記包装シートは前記長手方向に折り畳まれ、前記横方向の縁部にそれぞれ、前記長手方向に沿って接合領域が形成され、
前記接合領域が、前記横方向に離間した、前記包装シート同士が接合されてなる接合部の列を複数有し、
前記複数の列が、前記横方向の最も内側に配置され、前記長手方向に離間した複数の接合部を含む内列と、当該内列より前記横方向外側に配置された外列とを有し、
前記内列における前記長手方向の単位長さ当たりの前記接合部の合計長さが、前記外列における前記長手方向の単位長さ当たりの前記接合部の合計長さより小さい、個装吸収性物品。 - 前記接合領域が、前記接合がされていない非接合部を有し、
前記内列において、前記接合部の前記長手方向の長さに対する前記非接合部の前記長手方向の長さの比の値が0.5~10である、請求項1に記載の個装吸収性物品。 - 前記外列が、前記長手方向に離間した複数の接合部を含み、
前記内列における前記接合部の前記長手方向のピッチが、前記外列における前記接合部の前記長手方向のピッチより大きい、請求項1又は2に記載の個装吸収性物品。 - 前記外列における前記接合部の前記長手方向の長さが、前記内列における前記接合部の前記長手方向の長さ以上である、請求項1から3のいずれか一項に記載の個装吸収性物品。
- 前記接合部が融着によって形成されている、請求項1から4のいずれか一項に記載の個装吸収性物品。
- 前記包装シートの内面に剥離処理が施されている、請求項1から5のいずれか一項に記載の個装吸収性物品。
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CN (1) | CN118382411A (ja) |
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JP2006325933A (ja) * | 2005-05-26 | 2006-12-07 | Kao Corp | 吸収性物品の個別体及びその製造装置 |
JP2007167416A (ja) * | 2005-12-22 | 2007-07-05 | Uni Charm Corp | 個別包装体 |
JP2007282918A (ja) * | 2006-04-18 | 2007-11-01 | Uni Charm Corp | 個包装体及びその製造方法 |
JP2013000385A (ja) * | 2011-06-17 | 2013-01-07 | Kao Corp | 吸収性物品 |
WO2017022038A1 (ja) * | 2015-07-31 | 2017-02-09 | ユニ・チャーム株式会社 | 吸収性物品の個包装体、及び吸収性物品の個包装体の製造方法 |
JP2017517342A (ja) * | 2014-06-13 | 2017-06-29 | エスセーアー・ハイジーン・プロダクツ・アーベー | 衛生用品のための包装ユニットおよび包装ユニットを形成する方法 |
JP2021045326A (ja) * | 2019-09-18 | 2021-03-25 | 大王製紙株式会社 | 包装吸収性物品 |
JP2021049263A (ja) * | 2019-09-26 | 2021-04-01 | 大王製紙株式会社 | 包装吸収性物品 |
-
2021
- 2021-12-27 JP JP2021212498A patent/JP2023096617A/ja active Pending
-
2022
- 2022-09-26 CN CN202280082240.3A patent/CN118382411A/zh active Pending
- 2022-09-26 WO PCT/JP2022/035628 patent/WO2023127210A1/ja active Application Filing
- 2022-09-29 TW TW111136965A patent/TW202325243A/zh unknown
Patent Citations (8)
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JP2006325933A (ja) * | 2005-05-26 | 2006-12-07 | Kao Corp | 吸収性物品の個別体及びその製造装置 |
JP2007167416A (ja) * | 2005-12-22 | 2007-07-05 | Uni Charm Corp | 個別包装体 |
JP2007282918A (ja) * | 2006-04-18 | 2007-11-01 | Uni Charm Corp | 個包装体及びその製造方法 |
JP2013000385A (ja) * | 2011-06-17 | 2013-01-07 | Kao Corp | 吸収性物品 |
JP2017517342A (ja) * | 2014-06-13 | 2017-06-29 | エスセーアー・ハイジーン・プロダクツ・アーベー | 衛生用品のための包装ユニットおよび包装ユニットを形成する方法 |
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JP2021045326A (ja) * | 2019-09-18 | 2021-03-25 | 大王製紙株式会社 | 包装吸収性物品 |
JP2021049263A (ja) * | 2019-09-26 | 2021-04-01 | 大王製紙株式会社 | 包装吸収性物品 |
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