EP4286295A1 - Wrapped body - Google Patents

Wrapped body Download PDF

Info

Publication number
EP4286295A1
EP4286295A1 EP22780131.3A EP22780131A EP4286295A1 EP 4286295 A1 EP4286295 A1 EP 4286295A1 EP 22780131 A EP22780131 A EP 22780131A EP 4286295 A1 EP4286295 A1 EP 4286295A1
Authority
EP
European Patent Office
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
EP22780131.3A
Other languages
German (de)
English (en)
French (fr)
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
Publication of EP4286295A1 publication Critical patent/EP4286295A1/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
    • 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
    • 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
    • B65D83/0894—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.
  • 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 4C.
  • This packaged product 1 is generally in the form of a hexahedron having a top face 4C, a bottom face 4D opposite from the top face 4C, and longitudinal side faces 4B and transverse side faces 4A located between the top face 4C and the bottom face 4D, 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 4X 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 3A 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 4A as a sealed face.
  • the sealed faces which are the transverse side faces 4A of this gusset wrapping, face the shorter side faces 3A of the bundle 3, while the longitudinal side faces 4B, which are the gussets, face the longer side faces 3B 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 2A the folded tissue paper sheet, folded halves 2B 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 3B, in each of which the folded edges 2C of the tissue paper sheets 2 are arranged, a pair of shorter side faces 3A, in each of which the folded edges 2C are not arranged, and a pair of planes (top and bottom faces) 3C contiguous to the shorter side faces 3A and the longer side faces 3B.
  • 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 according to the present invention is formed by disposing an easy-tear line 50 in a loop in the top face 4C, 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 4C 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 5A toward the other end 5B, and thus provides good handleability in package opening.
  • the end located on the left in each figure is referred to as one end 5A, whereas the end located on the right is referred to as the other end 5B, 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 4C, 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 L1 in the width direction of the overall dispenser-port-forming region 5 is 70% or more the dimension L2 in the width direction of the top face of the bundle 3
  • the maximum dimension L3 in the depth direction of the overall dispenser-port-forming region 5 is 10 to 40% the dimension L4 in the depth direction of the top face of the bundle 3
  • the dimension L5 in the width direction of the narrowed section is 50 to 70% the dimension L2 in the width direction of the top face of the bundle 3
  • the dimension L6 in the depth direction of the narrowed section is 0.5 to 10% the dimension L4 in the depth direction of the top face of the bundle 3.
  • 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 51A 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.
  • the edge flaps 51A lean firmly against even the stiff sanitary tissue paper sheet 2 to enhance the anti-fall-back property.
  • 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 4A and the top face 4C, 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.
  • packaging like gusset wrapping or pillow wrapping, which hardly forms a clear folding line along the boundary between the transverse side faces 4A and the top face 4C, 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
  • 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 6H 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 2R to be rolled gently along the edges 6E 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 2R of the subsequent sanitary tissue paper sheet partly exposed out of the dispenser port 6 is fit in the deep indentations 6H.
  • 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. Further, 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. With such a layout, 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 L3 in the depth direction of the curved convex sections 53 is specifically 25 to 45 mm, and that the dimension L7 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. With the softness of the packaging film 4 lower than that 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 50C and uncut areas 50U are arranged alternately.
  • the perforated line may be a standard perforated line wherein the cut areas 50C 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 105Z of the packaging film bounded by the looped easy-tear line from one end 105A toward the other end 105B in the longitudinal direction X as shown in Fig. 13(b) .
  • the portion 50P defining the boundary of at least one end in the width direction (the other end 5B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may have a characteristic perforated line 50P 1 where uncut areas 50U and the modified cut areas 50D are arranged alternately as shown particularly in Figs. 5 and 6 , wherein each of the modified cut areas 50D has one or two peripheral cut parts 50e to form a dogleg cut on one or both ends thereof.
  • Each of the modified cut areas 50D has, more specifically, a major cut part 50m in the form of a straight line or a mildly curved line approximating a straight line, and a peripheral cut part 50e arranged contiguously to the major cut part 50m at a particular angle thereto on one or each end of the major cut part 50m to form a dogleg cut on one or each end, particularly as shown in Figs. 5 and 6 .
  • the modified cut areas 50D may include modified cut areas 50D 1 each having only one end formed as a dogleg cut, and modified cut areas 50D 2 each having both ends formed as dogleg cuts as shown in Fig. 5 . As shown in Fig.
  • the modified cut areas 50D may also include modified cut areas 50D 3 each having one end formed as a dogleg cut 50e 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 50e 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 50D in the portion 50P 1 where the modified cut areas 50D and the uncut areas 50U are arranged alternately may be such that only the modified cut areas 50D are arranged in each of which the end of each peripheral cut part 50e 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 50D are arranged in each of which the end of each peripheral cut part 50e 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 50e 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 50e 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 50e 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 50e are oriented toward the center of the width of the top face.
  • one of the adjacent ends of adjacent modified cut areas 50D has a peripheral cut part 50e while the other having none
  • the uncut areas 50U between these adjacent modified cut areas are twisted immediately before being cut off, and thus likely to be cut easily without ripping or elongation of the film.
  • the risk of ripping during the opening may be reduced.
  • the peripheral cut parts 50e cause slight displacement of the ends of the modified cut areas 50U inward or outward in the width direction from the direction along which the major cut parts 50m extend, so that formation of the dispenser port 6 results in slight projections originated from the portions which have been the uncut areas 50U to form serrated edges.
  • the lateral edges of the subsequent sheet of sanitary tissue paper 2 partially exposed out of the dispenser port following the dispensed sheet is supported in its root portion 2R by the serrated edges, which enhances the anti-fall-back property.
  • a modified cut area 50D 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 50D 2 having peripheral cut parts 50e 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 50D 2 on each side thereof is an modified cut area 50D 1 having a peripheral cut part 50e 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 50e of the adjacent modified cut area 50D 1 , 50D 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 50U therebetween is tear-opened during the opening operation, the small ripping is likely to connect immediately to the peripheral cut part 50e, which has already been cut, so that no further ripping is likely to proceed.
  • the ratio between the modified cut areas 50D and the uncut areas 50U in length is not particularly limited, but the length L8 of each modified cut area 50D may be, though not limited to, 5 mm to 20 mm, preferably 7 mm to 13 mm.
  • the length L9 of each peripheral cut part 50e of a modified cut area 50D may be 0.2 m to 3.0 mm, preferably 0.5 mm to 2.5 mm.
  • the length L11 of each uncut area 50U between modified cut areas 50D may be 0.2 mm to 3.0 mm, preferably 0.3 mm to 2.0 mm. Within this range, the uncut areas 50U are cut while ripping hardly occurs between the modified cut areas 50D, promoting smooth and continuous tear-opening.
  • the angle ⁇ between the major cut part 50m and the peripheral cut part 50e at the dogleg cut of a modified cut area 50D is 90° or larger, preferably 100° or larger, more preferably 120° or larger.
  • the transition from the major cut part 50m to the peripheral cut part 50e 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 50m to the peripheral cut part 50e.
  • the part 50P defining the boundary of at least one end in the width direction (the other end 5B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may be a portion 50P 2 where the easy-tear line 50 is composed of alternately arranged convex cut areas 50T, each having a convex shape tapered outward in the width direction, and uncut areas 50U each connecting the bases of adjacent convex cut areas 50T, 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 50P 2 where the convex cut areas 50T and the uncut areas 50U 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 50T and the uncut areas 50U arranged alternately.
  • a convex cut area 50T 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 50P 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 50T 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 50T is not oriented toward the depth direction Y or toward the center of the width direction.
  • the vertex of each convex cut area 50T 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 50T 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 6T function as barbs against the root portion 2R 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 L12 from the base to the vertex of each convex cut area 50T 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 50T is preferably 0.5 to 7 mm, more preferably 1 to 5 mm.
  • Convex cut areas 50T 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 50T 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 50T and the uncut areas 50U connecting the bases thereof are arranged alternately, is less noticeable, resulting in good designability.
  • the ratio of the length L13 between the base ends of each convex cut area 50T to the length L14 of each uncut area 50U between the bases of adjacent convex cut areas 50T is not particularly limited, but preferably, the length L13 between the base ends of each convex cut area 50T may be 5 mm to 20 mm, preferably 7 mm to 13 mm, and the length L14 of each uncut area 50U 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 50P defining the boundary of at least one end in the width direction (the other end 5B in the illustrated embodiment) of the dispenser-port-forming region 5 according to the present invention may be a portion 50P 3 where the easy-tear line is composed of alternately arranged cut areas 50C and half-cut areas 50H, as shown particularly in Figs. 10 and 11 .
  • the cut areas 50C and the half-cut areas 50H 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 50H, the packaging film 4 is not completely cut through, and is cut for a certain extent L15 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 L16.
  • tear-opening of the cut areas 50C and the half-cut areas 50H 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 L16, unintended ripping may be hard to occur.
  • the ratio in length of each cut area 50C and each half-cut area 50H on the end of the dispenser-port-forming region 5 is not particularly limited, but, preferably, the length of the cut area 50C may be 5 mm to 20 mm, preferably 7 mm to 13 mm, and the length of the half-cut area 50H 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 50C to a half-cut area 50H and from a half-cut area 50H to a cut area 50C, and unintended ripping may be hard to occur.
  • half-cut areas may be provided between the modified cut areas 50D 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 50P 1 where the modified cut areas 50D and the uncut areas 50U are arranged alternately may be provided on both ends or on only either end of the dispenser-port-forming region 5.
  • the portion 50P 2 where the convex cut areas 50T and the uncut areas 50U are arranged alternately may be provided on both ends or on only either end of the dispenser-port-forming region 5.
  • the portion 50P 3 where the cut areas 50C and the half-cut areas 50H 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 L10 of the easy-tear line extending from the middle of the flaring section 52A beyond the laterally outer end 53t 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 5T is formed in the portion of the dispenser-port-forming region 5 on one end 5A from one side of the depth direction up to the laterally outer end. This tab 5T 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 5A toward the other end 5B 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 50C and the half-cut areas 50H 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)
EP22780131.3A 2021-03-31 2022-03-16 Wrapped body Pending EP4286295A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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
EP4286295A1 true EP4286295A1 (en) 2023-12-06

Family

ID=83459046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22780131.3A Pending EP4286295A1 (en) 2021-03-31 2022-03-16 Wrapped body

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
TW202239670A (zh) 2022-10-16
JP2022156860A (ja) 2022-10-14
US20240057825A1 (en) 2024-02-22
WO2022209911A1 (ja) 2022-10-06

Similar Documents

Publication Publication Date Title
CN113874291B (zh) 膜包装纸巾集合包装体
JP7195511B2 (ja) 開封用ミシン目入りフィルム包装体
EP3778428A1 (en) Sanitary tissue package
EP4286295A1 (en) Wrapped body
EP4286296A1 (en) Packaging body
EP4019429A1 (en) Film packaging for tissue
JP2014129113A (ja) 衛生薄葉紙包装体
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
WO2022209718A1 (ja) 包装体
JP7169789B2 (ja) 衛生薄葉紙包装体
JP2022190792A5 (ja)
JP2022156860A5 (ja)
JP2022156859A5 (ja)
JP2022154667A5 (ja)
JP2022154668A (ja) 包装体
JP2022154668A5 (ja)
CN114391000B (zh) 膜包装抽纸集合包装体

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230830

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR