US20240057825A1 - Packaged product - Google Patents

Packaged product Download PDF

Info

Publication number
US20240057825A1
US20240057825A1 US18/552,185 US202218552185A US2024057825A1 US 20240057825 A1 US20240057825 A1 US 20240057825A1 US 202218552185 A US202218552185 A US 202218552185A US 2024057825 A1 US2024057825 A1 US 2024057825A1
Authority
US
United States
Prior art keywords
cut
dispenser
port
areas
top face
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
US18/552,185
Other languages
English (en)
Inventor
Hirohiko Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daio Paper Corp
Original Assignee
Daio Paper Corp
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.)
Filing date
Publication date
Application filed by Daio Paper Corp filed Critical Daio Paper Corp
Assigned to DAIO PAPER CORPORATION reassignment DAIO PAPER CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KATO, HIROHIKO
Publication of US20240057825A1 publication Critical patent/US20240057825A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/42—Dispensers for paper towels or toilet-paper dispensing from a store of single sheets, e.g. stacked
    • A47K10/421—Dispensers for paper towels or toilet-paper dispensing from a store of single sheets, e.g. stacked dispensing from the top of the dispenser
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/16—Paper towels; Toilet paper; Holders therefor
    • A47K10/18—Holders; Receptacles
    • A47K10/20—Holders; Receptacles for piled sheets
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5844—Tear-lines provided in a wall portion for tearing out a portion of the wall the portion of the wall being a narrow strip, e.g. between lines of weakness
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0805—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture in a wall
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0894—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession the articles being positioned relative to one another or to the container in a special way, e.g. for facilitating dispensing, without additional support
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K2010/3266—Wet wipes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/42—Dispensers for paper towels or toilet-paper dispensing from a store of single sheets, e.g. stacked
    • A47K2010/428—Details of the folds or interfolds of the sheets
    • 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
    • B65D2583/00—Containers or packages with special means for dispensing contents
    • B65D2583/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D2583/082—Details relating to containers for dispensing thin flat articles in succession

Definitions

  • the present invention relates to a packaged product in which sheets of sanitary tissue paper, such as paper towels, are folded and stacked into a bundle and packaged with a flexible packaging film.
  • sanitary tissue paper such as paper towels and facial tissues
  • interfold and stack sheets each having a single or a plurality of plies into a so-called pop-up-type bundle so that picking up and withdrawal of the topmost sheet leads to withdrawal of part of the subsequent sheet, and to wrap the bundle with a flexible packaging film made of resin.
  • such a packaged product of sanitary tissue paper typically has a perforated line in the form of a simple straight line for forming a dispenser port, so that a slit-like dispenser port is formed in the top face of the product.
  • a slit-like dispenser port has problems in that a longer slit may cause fall back of the sheets inside the package when the number of sheets remaining in the package becomes small, whereas a shorter slit may cause difficulties in dispensing the first sheet after opening the package, or may cause too high a removal resistance of a sheet in the beginning or the end of use, so that the package is lifted up with the sheet and cannot allow the subsequent sheets to pop up.
  • the perforated line for forming a dispenser port is arranged in a longitudinally-elongated circular form by means of a die-cutting technique to broaden the dimension of the opening of the dispenser port in the depth direction, to be like an ellipse (see Patent Publications 1 and 2 below).
  • the dispenser port is formed in an approximate gourd shape with its ends in the width direction enlarged for further improving withdrawability.
  • dispenser ports generally in the elliptical shape or the gourd shape are mainly designed for sanitary tissue paper like facial tissues, which are mainly in facial use, such as for blowing your nose or wiping your mouth at meals, and of which softness and pliancy are valued.
  • the dispenser ports of such shapes are not always suitable for sanitary tissue paper, such as tissues having utility in wiping your skin other than face skin or cleaning up goods, with “qualities of strength, thickness, and resistance to tear”, or paper towels which have a higher stiffness compared to that of facial tissues, and mainly used for wiping your hands after washing.
  • sanitary tissue paper sheets For improving withdrawability of such sanitary tissue paper sheets, it is conceivable to broaden the dimension in the depth direction of the dispenser port.
  • a dispenser port for the stiff sanitary tissue paper is difficult to be designed in the same way as facial tissues, which are excellent in softness and pliancy, due to difference in paper quality.
  • Simply broadening the dimension in the depth direction of the dispenser port very likely leads to problems in withdrawability, such as pop-up failure, wherein, in the pop-up action, the subsequent sheet of sanitary tissue paper is not pulled up but falls back, or stand-up failure, wherein the sanitary tissue paper sheets cannot stand up from the top face of the package but falls back.
  • the first aspect is a packaged product including a flexible packaging film made of resin, and a bundle of sanitary tissue paper packaged therewith,
  • the second aspect is the packaged product according to the first aspect, wherein a dimension in the depth direction of the curved convex sections is 25 to 45 mm, and a dimension in the width direction of bulging of the curved convex sections is 2.5 to 12.5 mm.
  • sanitary tissue paper in particular, stiff sanitary tissue paper, such as paper towel.
  • FIG. 1 is a perspective view for explaining a packaged product according to the present invention.
  • FIG. 2 is a perspective view for explaining a bundle of sanitary tissue paper.
  • FIG. 3 is a top view for explaining a dispenser-port-forming region.
  • FIG. 4 is a perspective view for explaining state of use of the packaged product according to the present invention.
  • FIG. 5 shows partially enlarged views for explaining a dispenser-port-forming region having modified cut areas.
  • FIG. 6 shows partially enlarged views for explaining other dispenser-port-forming regions having modified cut areas.
  • FIG. 7 shows partially enlarged views for explaining a dispenser-port-forming region having convex cut areas.
  • FIG. 8 shows partially enlarged views for explaining other embodiments of the convex cut areas.
  • FIG. 9 is a perspective view for explaining state of use of a packaged product provided with a dispenser-port-forming region having convex cut areas.
  • FIG. 10 is a partially enlarged view for explaining a dispenser-port-forming region having half-cut areas.
  • FIG. 11 shows a front view and a sectional view for explaining the half-cut areas.
  • FIG. 12 illustrates another embodiment of the dispenser-port-forming region.
  • FIG. 13 illustrates ripping in formation of the dispenser port.
  • FIGS. 1 to 12 in comparison to FIG. 13 showing a comparative mode.
  • directions such as the top-bottom direction and the right-left direction, vary depending on the orientation of the packaged product, and do not mean absolute spatial directions. Stiffness may also be termed flexural rigidity of paper.
  • the packaged product 1 is obtained by packaging a bundle 3 of generally a cuboid shape, which is formed by interfolding and stacking sheets of sanitary tissue paper 2 , such as paper towels, with a flexible packaging film 4 , and has a dispenser-port-forming region 5 formed in its top face 4 C.
  • This packaged product 1 is generally in the form of a hexahedron having a top face 4 C, a bottom face 4 D opposite from the top face 4 C, and longitudinal side faces 4 B and transverse side faces 4 A located between the top face 4 C and the bottom face 4 D, to approximate the shape of the bundle 3 .
  • FIGS. 1 to 4 show an embodiment in gusset wrapping.
  • the gusset wrapping according to this embodiment is a pillow wrapping with gussets, and is performed by cylindrically wrapping the bundle 3 , which is an object of packaging, with the packaging film 4 so that an opening is formed on each longitudinal end; adhering, by heat-sealing or bonding with an adhesive, a portion 4 X overlapped in the wrapping direction on the bottom face or the like of the bundle 3 ; gusseting each portion extending beyond the shorter side face 3 A of the bundle 3 ; and adhering the end edge in the top-bottom direction by heat-sealing or using an adhesive to form the transverse side face 4 A as a sealed face.
  • the sealed faces which are the transverse side faces 4 A of this gusset wrapping, face the shorter side faces 3 A of the bundle 3
  • the longitudinal side faces 4 B which are the gussets, face the longer side faces 3 B having the folds, of the bundle 3 .
  • the packaged product may have been packaged in any suitable packaging configuration, such as simple pillow wrapping without the gussets, or overlap wrapping formed by sealing flaps placed one on top of the other in each transverse side face, which is also referred to as caramel wrapping.
  • the bundle 3 of the sanitary tissue paper 2 contained in the packaged product 1 according to the present invention is of a so-called pop-up type. As shown particularly in FIG. 2 , this bundle 3 is formed by folding a rectangular tissue paper sheet 2 in half, and placing, inside 2 A the folded tissue paper sheet, folded halves 2 B of the other tissue paper sheets 2 arranged above and below, so that a plurality of tissue paper sheets 2 is interfolded and stacked to form an approximate cuboid shape having a pair of longer side faces 3 B, in each of which the folded edges 2 C of the tissue paper sheets 2 are arranged, a pair of shorter side faces 3 A, in each of which the folded edges 2 C are not arranged, and a pair of planes (top and bottom faces) 3 C contiguous to the shorter side faces 3 A and the longer side faces 3 B.
  • the number of sheets of the sanitary tissue paper 2 constituting the bundle 3 is not particularly limited, but may be 30 to 240 sheets, with one ply or a plurality of plies being counted as one sheet.
  • the bundle 3 may be in any size without limitation, and may have a height of 30 to 100 mm by a longitudinal dimension (width) of 150 to 250 mm by a transverse dimension (depth) of 100 to 130 mm, when 200 sheets of sanitary tissue paper are bundled. Effect of resolving the pop-up failure according to the present invention is larger when the dimension in the height direction of the bundle is smaller than the dimension in the depth direction of the top face of the bundle.
  • the filling rate of the packaged product 1 with the bundle 3 is not limited as long as the effects of the present invention are not disturbed, but the gap between the bundle and the packaging film is preferably in the range of 0 to 30 mm.
  • the bundle 3 may be packaged slightly compressed in the top-bottom direction with the packaging film.
  • Each sheet of sanitary tissue paper 2 making up the bundle 3 is of a single-ply structure or of a layered structure of a plurality of plies.
  • the number of plies is not limited, but one ply or two plies are preferred.
  • the basis weight per ply is not limited, and preferably 10 to 40 g/m 2 .
  • One sheet of the sanitary tissue paper preferably has a mass of 1.0 to 2.5 g.
  • the sanitary tissue paper sheets of one or two plies each having the basis weight mentioned above are particularly suitable for paper towels suitably used for wiping hands after washing. Further, the paper thickness per sheet of the sanitary tissue paper is preferably 100 to 500 ⁇ m.
  • the sanitary tissue paper with the number of plies and the basis weight, as well as the paper thickness in the above-mentioned ranges provides excellent effects in resolving pop-up failure, wherein, in the pop-up action, the subsequent sanitary tissue paper sheet is not pulled up but falls back, or stand-up failure, wherein the subsequent sanitary tissue paper sheet cannot stand up from the top face of the package but collapse, in combination with the characteristic shape of the dispenser-port-forming region having a narrowed section, flaring sections, and curved convex sections, which are the features of the present invention.
  • basis weight is determined in accordance with JIS P 8124 (1998).
  • the paper thickness is a value determined by subjecting a specimen to sufficient moisture conditioning under the conditions prescribed in JIS P 8111 (1998), and then measuring the thickness of a plurality of plies under the same conditions, using a dial thickness gauge (thickness measuring device), PEACOCK Model G (OZAKI MFG. CO., LTD.) or an equivalent thereof.
  • the sanitary tissue paper 2 according to the present invention is of a dry type, not a so-called wet type impregnated with liquid chemical.
  • the above-mentioned bundle 3 made up of the sanitary tissue paper sheets 2 entrains a large amount of air.
  • some are of liquid-chemical-applied type, which has liquid chemical, such as a moisturizer including polyols or the like, typically glycerin, applied thereto to increase moisture content by moisture absorption of the polyols or the like, and the sanitary tissue paper may be of this type.
  • the raw material pulp of the sanitary tissue paper 2 is not limited, and may be a blend of pulp derived from softwood, such as NBKP, and pulp derived from hardwood, such as LBKP.
  • the raw material pulp may contain or consist solely of de-inked pulp.
  • the present invention produces particularly excellent effect with sanitary tissue paper having a high flexural rigidity and high stiffness, such as paper towels, so that it is particularly preferred that the raw material pulp contains more than 50% pulp derived from softwood.
  • the dry tensile strength of the sanitary tissue paper 2 is not limited, but sanitary tissue paper having a dry tensile strength of 1000 to 3000 cN/25 mm in the longitudinal direction and 250 to 1500 cN/25 mm in the horizontal direction is particularly suitable for the present invention.
  • the dry tensile strength is determined in accordance with JIS P 8113 (1998). Apparatus for the measurement may be Universal Tensile and Compressing Testing Machine TG-200N manufactured by MINEBEA CO., LTD., or equivalents thereof.
  • the dispenser-port-forming region 5 of the packaged product 1 is formed by disposing an easy-tear line 50 in a loop in the top face 4 C, which faces the topmost sanitary tissue paper sheet 2 of the bundle 3 packaged with the packaging film 4 .
  • the meaning of the term “loop” is not limited to a circular or elliptical shape, but includes a shape forming a closed region.
  • a dispenser port 6 which is an opening for dispensing the sanitary tissue paper 2 , is formed in the top face 4 C of the packaged product 1 , by tearing along the easy-tear line 50 and separating and removing the region bounded by the easy-tear line 50 .
  • the bundle 3 is of a pop-up type and thus, withdrawal of the topmost single sheet of the sanitary tissue paper 2 from the bundle 3 through the dispenser port thus formed, leads to exposure of part of the subsequent sanitary tissue paper sheet located immediately below the topmost, out of the dispenser port.
  • the dispenser-port-forming region 5 is formed by arranging the easy-tear line 50 in a loop
  • the dispenser port 6 formed by removing the region bounded by the easy-tear line 50 is not in the form of a mere slit composed only of a straight line, but has a certain dimension in the depth direction.
  • Such a dispenser-port-forming region 5 allows the packaging film therein to be separated and removed by tearing and continuously peeling the region of the packaging film bounded by the easy-tear line 50 from one end 5 A toward the other end 5 B, and thus provides good handleability in package opening.
  • the end located on the left in each figure is referred to as one end 5 A, whereas the end located on the right is referred to as the other end 5 B, which are defined merely for the sake of explanation, and the two may be used interchangeably.
  • the dispenser-port-forming region 5 of the packaged product 1 characteristically has a narrowed section 51 extending in the width direction in the middle of the depth direction of the top face 4 C, flaring sections 52 each continued from a corresponding end of the narrowed section 51 and gradually flaring with increasing distance from the narrowed section 51 outward in the width direction of the bundle 3 , and curved convex sections 53 each continued from a corresponding flaring section 52 and bulging convexly outward in the width direction of the bundle 3 .
  • the dimension L 1 in the width direction of the overall dispenser-port-forming region 5 is 70% or more the dimension L 2 in the width direction of the top face of the bundle 3
  • the maximum dimension L 3 in the depth direction of the overall dispenser-port-forming region 5 is 10 to 40% the dimension L 4 in the depth direction of the top face of the bundle 3
  • the dimension L 5 in the width direction of the narrowed section is 50 to 70% the dimension L 2 in the width direction of the top face of the bundle 3
  • the dimension L 6 in the depth direction of the narrowed section is 0.5 to 10% the dimension L 4 in the depth direction of the top face of the bundle 3 .
  • Formation of the dispenser port 6 from the dispenser-port-forming region 5 results in a pair of approximate trapezoidal free edge flaps 51 A movable in the top-bottom direction, in the vicinity of the opposed boundaries of the narrowed section 51 over to the flaring sections 52 .
  • Withdrawal of a single sheet of sanitary tissue paper 2 from the bundle 3 causes the edge flaps 51 A to deform in the direction of the withdrawal with a slight turn up and, as particularly shown in FIG. 4 , to lean against and support the subsequently exposed sheet of sanitary tissue paper 2 .
  • the dispenser-port-forming region 5 in the above-discussed dimension range according to the present invention is particularly configured to have the flaring sections 52 each continuing from the narrowed section 51 in a very small dimension in the depth direction to the curved convex section 53 in a very large dimension in the depth direction, so that the resulting dispenser port 6 renders the free edge flaps 51 A formed in the vicinity of the opposed boundaries of the narrowed section 51 very broad.
  • the narrowed section 51 is allowed to open widely, which leads to smooth dispensing of a relatively stiff sanitary tissue paper sheet 2 from the bundle 3 .
  • edge flaps 51 A lean firmly against even the stiff sanitary tissue paper sheet 2 to enhance the anti-fall-back property.
  • a narrowed section 51 is allowed to open widely, the overall top face is hard to be distorted and likely to be maintained flat upon withdrawal of the sanitary tissue paper sheets 2 , and the packaging product is particularly stable upon dispensing the sanitary tissue paper 2 sheet by sheet, even with packaging, like gusset wrapping or pillow wrapping, which hardly forms a clear folding line along the boundary between the transverse side faces 4 A and the top face 4 C, and thus may cause likely deformation of the packaging film in the top face of the packaged body 1 , or with packaging in which the contained sanitary tissue paper is stiff sanitary tissue paper 2 , such as paper towel, having the basis weight and the paper thickness discussed above, and the top face of the packaged product 1 is likely to be deformed upon withdrawal of the sheet 2 .
  • the dispenser-port-forming region 5 configured according to the present invention has the curved convex sections 53 broad in the depth direction, which makes the boundary of each curved convex section 53 longer and causes deep indentations 6 H to be formed from the respective flaring sections 52 to the respective curved convex sections 53 of the dispenser-port-forming region 5 when the dispenser port 6 is formed.
  • the subsequent sanitary tissue paper sheet partly exposed out of the dispenser port 6 following the sanitary tissue paper sheet withdrawn from the bundle 3 is deformed in its root portion 2 R to be rolled gently along the edges 6 E of the curved convex sections 53 .
  • Stiff sanitary tissue paper 2 is hard to be warped, and the stand-up property is enhanced by the gradual rolling.
  • the stand-up property is further enhanced because the root portion 2 R of the subsequent sanitary tissue paper sheet partly exposed out of the dispenser port 6 is fit in the deep indentations 6 H.
  • the dispenser-port-forming region 5 according to the present invention the pop-up failure due to the fall back of the sanitary tissue paper sheets inside the packaging film, which is said to be likely to occur with sanitary tissue paper with a higher stiffness, is hard to occur because of the behaviors discussed above. Note that such effects are efficiently achieved particularly by the combination of the sanitary tissue paper sheets having preferred basis weight and paper thickness discussed above and a preferred packaging film to be discussed later.
  • the angle of the easy-tear line 50 with respect to the width direction in each flaring section 52 gradually increases outward in the width direction of the bundle 3 .
  • the portion of the easy-tear line 50 defining the boundary of each flaring section 52 preferably forms a taper angle ⁇ of 25 to 60 degrees with respect to the width direction.
  • the easy-tear line 50 is formed as a curved line and smoothly continues from the flaring section 52 to the curved convex section 53 .
  • the packaged product may be tear-opened along the easy-tear line 50 smoothly from the flaring section 52 toward the curved convex section 53 .
  • the dimension L 3 in the depth direction of the curved convex sections 53 is specifically 25 to 45 mm, and that the dimension L 7 in the width direction of the bulging is 2.5 to 12.5 mm.
  • the packaging film 4 that is flexible, made of resin, and forms the exterior of the packaged product 1 may specifically be, for example, a single-layer film of polyethylene, polypropylene, polyester, polyethylene terephthalate, nylon, polyvinylidene chloride, or an ethylene-vinyl alcohol copolymer; a laminate film in which films including any of these are suitably layered; or a gas barrier film obtained by subjecting any of these films to surface treatment, such as aluminum deposition.
  • biomass films may also be used, which derive from plant materials, such as sugar cane, potato (starch), or corn. Use of such biomass films is preferred in light of environmental protection.
  • polypropylene film or polyethylene film is particularly preferred.
  • the packaging film 4 may be a matte film having excellent designability and hand feel properties.
  • the melting point of the film is preferably 150° C. or lower. Note that a lower melting point of the packaging film allows heat sealing treatment at lower temperatures, but the practical lower limit is 80° C.
  • Polypropylene film may be cast polypropylene (CPP) film, whereas polyethylene film may be linear low-density polyethylene (LLDPE) film, low-density polyethylene (LDPE) film, or medium-density polyethylene (MDPE) film.
  • CPP polypropylene
  • LLDPE linear low-density polyethylene
  • LDPE low-density polyethylene
  • MDPE medium-density polyethylene
  • Multi-layered resin films having a polyethylene resin film or a polypropylene resin film laminated on one or both of the surfaces of an ethylene-vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film to improve heat sealability, may also be used.
  • the thickness of the packaging film 4 may suitably be selected, and preferably 25 to 75 ⁇ m as measured in accordance with JIS P 8118 (1998). With the thickness of 25 to 75 ⁇ m, the packaging film may particularly effectively produce the effects of the present invention. The thickness is measured using a dial thickness gauge (thickness measuring device), PEACOCK Model G-1A (OZAKI MFG CO., LTD.) or an equivalent thereof, after the specimen is subjected to sufficient moisture conditioning under the conditions prescribed in JIS P 8111 (1998).
  • a dial thickness gauge thickness measuring device
  • PEACOCK Model G-1A OZAKI MFG CO., LTD.
  • the softness of the packaging film 4 is preferably lower than the softness of the sanitary tissue paper 2 .
  • the effects of the present invention may particularly effectively be exhibited.
  • the easy-tear line 50 defining the dispenser-port-forming region 5 may be a perforated line, a slit cut line having uncut areas, or the like, but is not limited thereto.
  • the type of the perforated line is not limited as long as cut areas 50 C and uncut areas 50 U are arranged alternately.
  • the perforated line may be a standard perforated line wherein the cut areas 50 C are straight lines; a microperforated line wherein the cut areas are pores; or a cutline for zipper tear strip wherein each cut area is Y-shaped, approximate L-shaped, or dogleg.
  • a slit cut line has slit-like portions cut in a film, and by leaving uncut areas, the cut areas and the uncut areas are alternately arranged.
  • a slit cut line having uncut areas may be referred to simply as a slit cut line.
  • Perforated lines and slit cut lines having uncut areas may not sometimes be distinguished from each other, but as used herein, a slit cut line refers to a line with less than two pitches of cut areas, i.e., a line in which two consecutive cut areas of the same length are not continuous.
  • a slit cut line has cut areas of a larger length compared to those of a perforated line.
  • a cut/tie ratio of a perforated line or a slit cut line having uncut areas may be decided with suitable intervals, depending on easiness of fracture of the film used, and the length of each cut area may suitably be designed to fall within a range of 0.8 mm to 20.0 mm, and the length of each uncut area (or tied portion) within a range of 0.3 mm to 5.0 mm.
  • a dispenser-port-forming region 105 formed by disposing a perforated line 150 in a loop by means of a die-cutting technique has an advantage in that a dispenser port may be formed easily by tearing and peeling the region 105 Z of the packaging film bounded by the looped easy-tear line from one end 105 A toward the other end 105 B in the longitudinal direction X as shown in FIG. 13 ( b ) .
  • the portion 50 P defining the boundary of at least one end in the width direction (the other end 5 B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may have a characteristic perforated line 50 P′ where uncut areas 50 U and the modified cut areas 50 D are arranged alternately as shown particularly in FIGS. 5 and 6 , wherein each of the modified cut areas 50 D has one or two peripheral cut parts 50 e to form a dogleg cut on one or both ends thereof.
  • 80% or more, preferably 90% or more, particularly preferably 95% or more of the boundary of the curved convex section 53 is the portion 50 P where the modified cut areas 50 D and the uncut areas 50 U are arranged alternately. All of the boundary of the curved convex section 53 may be formed with an easy-tear line having the modified cut areas 50 D and the uncut areas 50 U arranged alternately.
  • Each of the modified cut areas 50 D has, more specifically, a major cut part 50 m in the form of a straight line or a mildly curved line approximating a straight line, and a peripheral cut part 50 e arranged contiguously to the major cut part 50 m at a particular angle thereto on one or each end of the major cut part 50 m to form a dogleg cut on one or each end, particularly as shown in FIGS. 5 and 6 .
  • the modified cut areas 50 D may include modified cut areas 50 D′ each having only one end formed as a dogleg cut, and modified cut areas 50 D 2 each having both ends formed as dogleg cuts as shown in FIG. 5 . As shown in FIG.
  • the modified cut areas 50 D may also include modified cut areas 50 D 3 each having one end formed as a dogleg cut 50 e of which end is oriented outward in the width direction of the top face of the bundle 3 , and the other end formed as a dogleg cut 50 e of which end is oriented toward the center of the width of the top face of the bundle 3 .
  • the arrangement of the modified cut areas 50 D in the portion 50 P 1 where the modified cut areas 50 D and the uncut areas 50 U are arranged alternately may be such that only the modified cut areas 50 D are arranged in each of which the end of each peripheral cut part 50 e is oriented outward in the width direction of the top face of the bundle 3 as shown in FIGS. 5 and 6 ( a ), or that only the modified cut areas 50 D are arranged in each of which the end of each peripheral cut part 50 e is oriented toward the center of the width of the top face of the bundle 3 as shown in FIG. 6 ( b ) .
  • those having a peripheral cut part 50 e of which end is oriented outward in the width direction of the top face of the bundle 3 and those having a peripheral cut part 50 e of which end is oriented toward the center of the width of the top face of the bundle 3 may be mixed.
  • the arrangement may be such that, as shown in FIG. 6 ( c ) , only the end of the peripheral cut part 50 e located on each end in the depth direction of the top face of the bundle 3 is oriented outward in the width direction of the top face, while the ends of the other peripheral cut parts 50 e are oriented toward the center of the width of the top face.
  • the peripheral cut parts 50 e cause slight displacement of the ends of the modified cut areas 50 U inward or outward in the width direction from the direction along which the major cut parts 50 m extend, so that formation of the dispenser port 6 results in slight projections originated from the portions which have been the uncut areas 50 U to form serrated edges.
  • a modified cut area 50 D is located on the virtual line extending in the width direction and passing the center C of the dimension in the depth direction of the narrowed section 51 and is an modified cut area 50 D 2 having peripheral cut parts 50 e oriented outward in the width direction on both ends, and the modified cut area located outward in the depth direction of the modified cut area 50 D 2 on each side thereof is an modified cut area 50 D 1 having a peripheral cut part 50 e oriented outward in the width direction only on its end located outward in the depth direction of the center C of the dimension in the depth direction of the narrowed section 51 .
  • the peripheral cut part 50 e of the adjacent modified cut area 50 D 1 , 50 D 2 is present in a position further in the direction of peeling outward in the width direction, so that even if small ripping is generated in the packaging film while the uncut area 50 U therebetween is tear-opened during the opening operation, the small ripping is likely to connect immediately to the peripheral cut part 50 e , which has already been cut, so that no further ripping is likely to proceed.
  • the ratio between the modified cut areas 50 D and the uncut areas 50 U in length is not particularly limited, but the length L 8 of each modified cut area 50 D may be, though not limited to, 5 mm to 20 mm, preferably 7 mm to 13 mm.
  • the length L 9 of each peripheral cut part 50 e of a modified cut area 50 D may be 0.2 m to 3.0 mm, preferably 0.5 mm to 2.5 mm.
  • the length L 11 of each uncut area 50 U between modified cut areas 50 D may be 0.2 mm to 3.0 mm, preferably 0.3 mm to 2.0 mm. Within this range, the uncut areas 50 U are cut while ripping hardly occurs between the modified cut areas 50 D, promoting smooth and continuous tear-opening.
  • the angle ⁇ between the major cut part 50 m and the peripheral cut part 50 e at the dogleg cut of a modified cut area 50 D is 90° or larger, preferably 100° or larger, more preferably 120° or larger.
  • the transition from the major cut part 50 m to the peripheral cut part 50 e is preferably rounded and, in that case, the curvature at the dogleg cut is not limited, but may be preferably R 0.1 to R 2.0, more preferably R 0.2 to R 1.2, particularly preferably R 0.4 to R 1.1. At such a curvature, the tear-opening of the modified cut areas smoothly proceeds from the major cut part 50 m to the peripheral cut part 50 e.
  • the part 50 P defining the boundary of at least one end in the width direction (the other end 5 B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may be a portion 50 P 2 where the easy-tear line 50 is composed of alternately arranged convex cut areas 50 T, each having a convex shape tapered outward in the width direction, and uncut areas 50 U each connecting the bases of adjacent convex cut areas 50 T, as shown particularly in FIGS. 7 and 8 .
  • 80% or more, preferably 90% or more, particularly preferably 95% or more of the portion defining the boundary of the curved convex section 53 is the portion 50 P 2 where the convex cut areas 50 T and the uncut areas 50 U are arranged alternately. All of the portion defining the boundary of the curved convex section 53 may be formed with an easy-tear line having the convex cut areas 50 T and the uncut areas 50 U arranged alternately.
  • a convex cut area 50 T may have a shape wherein more than one convex shapes are interconnected at their bases to form a continuous profile. The number of interconnected convex shapes is not particularly limited, but may preferably be about 2 to 5. Note that, in the portion 50 P 2 where the convex cut areas and the uncut areas are arranged alternately, convex cut areas each having only one convex shape and convex cut areas each having continuous convex shapes may be mixed.
  • Each convex cut area 50 T may be in any shape as long as it is tapered outward in the width direction of the top face of the bundle 3 , and may be in a V-shape having one vertex as shown in FIG. 7 , a U-shape as shown in FIG. 8 ( a ) , or a trapezoidal shape as shown in FIG. 8 ( b ) .
  • “tapered outward in the width direction” means that the vertex of the convex cut area 50 T is not oriented toward the depth direction Y or toward the center of the width direction.
  • each convex cut area 50 T forms an angle ⁇ with respect to the depth direction Y of 15° or larger, preferably 30° or larger, more preferably 45° or larger.
  • the vertex angle ⁇ of each convex cut area 50 T is not particularly limited as long as it is less than 180°, but may be preferably 15 to 120°, more preferably 20 to 90°, still more preferably 30 to 60°.
  • the convex pieces 6 T function as barbs against the root portion 2 R of the subsequent sheet of sanitary tissue paper 2 partially exposed out of the dispenser port following the dispensed sheet, which contributes to prevention of the fall back. Further, the lateral edges of the sheet of sanitary tissue paper 2 are supported between the convex pieces, which further enhances the anti-fall-back property.
  • the length L 12 from the base to the vertex of each convex cut area 50 T may preferably be 0.1 mm or more.
  • the maximum height is not particularly limited, but is preferably in a range not exceeding 10 mm.
  • the height of the convex cut area 50 T is preferably 0.5 to 7 mm, more preferably 1 to 5 mm.
  • Convex cut areas 50 T with a smaller length of less than 1.0 mm may be formed by a technique referred to as microwave cutting, or otherwise. With the convex cut areas 50 T having such a smaller height, the corrugation of the serrated edge of the dispenser port 6 formed in the portion where the convex cut areas 50 T and the uncut areas 50 U connecting the bases thereof are arranged alternately, is less noticeable, resulting in good designability.
  • the ratio of the length L 13 between the base ends of each convex cut area 50 T to the length L 14 of each uncut area 50 U between the bases of adjacent convex cut areas 50 T is not particularly limited, but preferably, the length L 13 between the base ends of each convex cut area 50 T may be 5 mm to 20 mm, preferably 7 mm to 13 mm, and the length L 14 of each uncut area 50 U may be 0.3 mm to 3 mm, preferably 0.7 mm to 1.3 mm. Within these ranges, unintended ripping may not occur, and smooth and continuous tear-opening may be likely to proceed.
  • the portion 50 P defining the boundary of at least one end in the width direction (the other end 5 B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may be a portion 50 P 3 where the easy-tear line is composed of alternately arranged cut areas 50 C and half-cut areas 50 H, as shown particularly in FIGS. 10 and 11 .
  • the boundary of the curved convex section 53 is the portion 50 P 3 where the cut areas 50 C and the half-cut areas 50 H are arranged alternately. All of the boundary of the curved convex section 53 may be formed with an easy-tear line having the cut areas 50 C and the half-cut areas 50 H arranged alternately.
  • the cut areas 50 C and the half-cut areas 50 H are shown in a plan view in FIG. 11 ( a ) and in a cross-sectional view taken along lines b-b therein in FIG. 11 ( b ) .
  • the packaging film 4 is completely cut through in the thickness direction Z from the top surface 41 , which does not face the bundle 3 , down to the bottom surface 42 , which faces the bundle 3 , whereas at the half-cut areas 50 H, the packaging film 4 is not completely cut through, and is cut for a certain extent L 15 in the thickness direction from the top surface 41 toward the bottom surface 42 .
  • the packaging film 4 is cut for an extent of 20% or more of its thickness L 16 .
  • tear-opening of the cut areas 50 C and the half-cut areas 50 H may sufficiently proceed continuously and smoothly in forming the dispenser port by the opening operation.
  • the maximum cut extent is not limited, but with a cut extent of 80% or less, more preferably 60% or less of the thickness L 16 , unintended ripping may be hard to occur.
  • the ratio in length of each cut area 50 C and each half-cut area 50 H on the end of the dispenser-port-forming region 5 is not particularly limited, but, preferably, the length of the cut area 50 C may be 5 mm to 20 mm, preferably 7 mm to 13 mm, and the length of the half-cut area 50 H may be 0.3 mm to 3 mm, preferably 0.7 mm to 1.3 mm. Within these ranges, smooth and continuous tear-opening may be likely to proceed from a cut area 50 C to a half-cut area 50 H and from a half-cut area 50 H to a cut area 50 C, and unintended ripping may be hard to occur.
  • half-cut areas may be provided between the modified cut areas 50 D or between the convex cut areas, or between the cut areas in a portion of the perforated line other than those on both ends of the dispenser-port-forming region.
  • the portion 50 P 1 where the modified cut areas 50 D and the uncut areas 50 U are arranged alternately may be provided on both ends or on only either end of the dispenser-port-forming region 5 .
  • the portion 50 P 2 where the convex cut areas 50 T and the uncut areas 50 U are arranged alternately may be provided on both ends or on only either end of the dispenser-port-forming region 5 .
  • the portion 50 P 3 where the cut areas 50 C and the half-cut areas 50 H are arranged alternately, may also be provided on both ends or on only either end of the dispenser-port-forming region 5 .
  • the other end may be such that, for example, the part L 10 of the easy-tear line extending from the middle of the flaring section 52 A beyond the laterally outer end 53 t of the curved convex section 53 on one side of the depth direction is formed as a continuous cut area, as shown in FIG. 12 ( a ) .
  • a tab 5 T is formed in the portion of the dispenser-port-forming region 5 on one end 5 A from one side of the depth direction up to the laterally outer end. This tab 5 T may easily be picked and peeled to further facilitate the opening operation.
  • the boundaries of the narrowed section 51 according to the present invention extend in the same direction as the peeling direction from the one end 5 A toward the other end 5 B in the opening operation, and are thus preferably composed of perforated lines having uncut areas, rather than half-cut areas. This preferably keeps the boundaries of the narrowed section 51 from unintended tear-opening.
  • the easy-tear line 50 which may be a perforated line or a slit cut line having uncut areas, may be formed at one time by, for example, die cutting, even including a portion wherein the cut areas 50 C and the half-cut areas 50 H are arranged alternately.
  • packaged products were prepared in Examples 1 to 5 according to the present invention and in Comparative Example 1, and tested for fall back of the sanitary tissue paper inside the products and for ripping of the dispenser port.
  • the dispenser-port-forming regions of the packaged products in Examples 1 to 5 are in an approximate gourd shape having the narrowed section, the flaring sections, and the curved convex sections as shown in FIGS. 1 to 5 .
  • the dispenser-port-forming region of the packaged product in Comparative Example 1 is in the form of a mere straight perforated line.
  • the bundle in the packaged product in each Example is a pop-up-type bundle of 100 sheets of interfolded and stacked one-ply paper towel (tradename “Rakura Cook Kitchen Paper”, 20 g/m 2 in basis weight, 220 ⁇ m in paper thickness).
  • the packaging configuration in each Example is gusset wrapping, with the stretching direction of the packaging film aligned to the direction perpendicular to the width direction of the dispenser-port-forming region.
  • the packaged product was tear-opened along the easy-tear line defining the dispenser-port-forming region to form the dispenser port therein, the sheets of paper towels constituting the bundle were pulled out one by one through the dispenser port until the last sheet, and the number of actual fall backs occurred was counted.
  • Table 1 shows that, with regard to the fall back, in Comparative Example 1, wherein the dispenser-port-forming region is formed of a single perforated line and the resulting dispenser port is in the form of a slit, twelve fall backs were observed. On the other hand, in Examples 1 to 5, the number of fall backs was zero and no fall back was observed. That is, it was demonstrated that dispenser ports resulting from the dispenser-port-forming regions having a narrowed section, flaring sections, and curved convex sections had excellent anti-fall-back properties.
  • Example 5 wherein the half-cut areas between the cut areas in the curved convex sections in Example 1 were replaced with conventional uncut areas, ripping was observed on an end of the dispenser port of some samples in the opening operation. It was demonstrated that, with the easy-tear lines defining rather long boundaries of the curved convex sections as in Examples 1 to 4, the openability was enhanced by alternately arranging the cut areas and the half-cut areas in those portions.
  • the packaged product according to the present invention is a film-packaged product providing excellent withdrawability of sheets of sanitary tissue paper, in particular, even stiff sanitary tissue paper, such as paper towels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Packages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US18/552,185 2021-03-31 2022-03-16 Packaged product Pending US20240057825A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021-060758 2021-03-31
JP2021060758A JP2022156860A (ja) 2021-03-31 2021-03-31 包装体
PCT/JP2022/012000 WO2022209911A1 (ja) 2021-03-31 2022-03-16 包装体

Publications (1)

Publication Number Publication Date
US20240057825A1 true US20240057825A1 (en) 2024-02-22

Family

ID=83459046

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/552,185 Pending US20240057825A1 (en) 2021-03-31 2022-03-16 Packaged product

Country Status (6)

Country Link
US (1) US20240057825A1 (ja)
EP (1) EP4286295A1 (ja)
JP (1) JP2022156860A (ja)
CN (1) CN116801775A (ja)
TW (1) TW202239670A (ja)
WO (1) WO2022209911A1 (ja)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6497939B2 (ja) * 2015-01-06 2019-04-10 日本製紙クレシア株式会社 紙製品入りカートン
JP6532445B2 (ja) 2016-09-29 2019-06-19 大王製紙株式会社 ティシュペーパー包装製品
JP6709772B2 (ja) 2017-11-06 2020-06-17 大王製紙株式会社 フィルム包装ティシュペーパー及びフィルム包装ティシュー集合包装体
JP7224121B2 (ja) * 2018-06-29 2023-02-17 大王製紙株式会社 衛生薄葉紙包装体
CN113165793A (zh) * 2018-11-29 2021-07-23 大王制纸株式会社 片材包装体
JP7317595B2 (ja) * 2019-06-28 2023-07-31 大王製紙株式会社 フィルム包装ティシュー集合包装体

Also Published As

Publication number Publication date
CN116801775A (zh) 2023-09-22
EP4286295A1 (en) 2023-12-06
TW202239670A (zh) 2022-10-16
JP2022156860A (ja) 2022-10-14
WO2022209911A1 (ja) 2022-10-06

Similar Documents

Publication Publication Date Title
JP7195511B2 (ja) 開封用ミシン目入りフィルム包装体
CN113874291B (zh) 膜包装纸巾集合包装体
JP6771000B2 (ja) 衛生薄葉紙包装体
US20240057825A1 (en) Packaged product
US20220380113A1 (en) Film package of tissues
EP4286296A1 (en) Packaging body
CN114401905B (zh) 膜包装抽纸集合包装体和膜包装抽纸集合包装体的制造方法
WO2022209909A1 (ja) 包装体
US10743726B2 (en) Folded stack of tissues
WO2022209718A1 (ja) 包装体
US20190029478A1 (en) Folded stack of tissues
WO2020004026A1 (ja) 衛生薄葉紙包装体
JP2022190792A5 (ja)
JP2022156859A5 (ja)
JP2022154668A (ja) 包装体
JP2022156860A5 (ja)
JP2022154667A5 (ja)
CN114391000B (zh) 膜包装抽纸集合包装体
JP2022154668A5 (ja)

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAIO PAPER CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KATO, HIROHIKO;REEL/FRAME:065003/0792

Effective date: 20230719

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION