EP4286296A1 - Packaging body - Google Patents

Packaging body Download PDF

Info

Publication number
EP4286296A1
EP4286296A1 EP22824575.9A EP22824575A EP4286296A1 EP 4286296 A1 EP4286296 A1 EP 4286296A1 EP 22824575 A EP22824575 A EP 22824575A EP 4286296 A1 EP4286296 A1 EP 4286296A1
Authority
EP
European Patent Office
Prior art keywords
dispenser
port
cut
width direction
forming region
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
EP22824575.9A
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 EP4286296A1 publication Critical patent/EP4286296A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • 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

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 in the approximate elliptical shape or the approximate 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 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.
  • 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. 9(b) .
  • dispenser-port-forming regions 105 are broadened in the depth direction Y, which broadens the range of the perforations oriented closer to the perpendicular to the direction of the tearing and peeling. Accordingly, dispenser-port-forming regions, such as those in an approximate gourd shape having enlarged ends, are prone to ripping 105P.
  • the packaging film is a unitary oriented film stretched in the direction Y perpendicular to the longitudinal direction X of the dispenser-port-forming region 105, such ripping 105P is more prone to occur.
  • the longitudinal direction (machine direction: MD) of the packaging film is usually aligned to the longitudinal direction of the dispenser-port-forming region, so that such ripping is prone to occur.
  • 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
  • the third aspect is the packaged product according to the second aspect, wherein 80% or more of the portion of the easy-tear line defining the boundary of a curved convex section is formed of the perforated line having the modified cut areas and the uncut areas arranged alternately.
  • the fourth aspect is the packaged product according to the second aspect, wherein a dimension in a 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.
  • the fifth aspect is the packaged product according to any one of the second to the fourth aspects, wherein a dimension in the width direction of the dispenser-port-forming region is 70% or more a dimension in the width direction of the top face of the bundle, a maximum dimension in a depth direction of the dispenser-port-forming region is 10 to 40% a dimension in the depth direction of the top face of the bundle, a dimension in a width direction of the narrowed section is 50 to 70% a dimension in the width direction of the top face of the bundle, and a dimension in a depth direction of the narrowed section is 0.5 to 10% the dimension in the depth direction of the top face of the bundle.
  • a film-packaged product which is hard to be ripped on an end in the width direction of the dispenser port upon opening the dispenser port and thus has excellent openability, and which has excellent withdrawability of sheets of sanitary tissue paper, in particular, stiff sanitary tissue paper, such as paper towel.
  • Figs. 1 to 8 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 bonding with 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 1 may have been packaged in any suitable packaging configuration, such as simple pillow wrapping without the gussets, or overlap wrapping such as shown in Fig. 7 formed by sealing flaps placed one on top of the other in each transverse side face 4A, 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. Remedying effect on the pop-up failure according to the present invention is higher 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, but 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, but 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 is formed by disposing an easy-tear line 50 in a loop in the packaging film 4 in the top face 4C, which faces the topmost sanitary tissue paper sheet 2 of the bundle 3.
  • 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 packaged product 1 of the embodiment shown in Figs. 1 to 5 has a dispenser-port-forming region 5 of a particularly preferred, approximate gourd shape.
  • This dispenser-port-forming region 5 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 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 dispenser port 6 formed from the dispenser-port-forming region 5 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 easily deformable in its root portion 2R to be rolled along the edges 6E of the curved convex sections 53 into a shape with an enhanced stand-up property.
  • deep indentations 6H are formed from the respective flaring sections 52 to the respective curved convex sections 53 of the dispenser-port-forming region 5, and the stand-up property is further enhanced by the root portion 2R of the subsequent sanitary tissue paper sheet partly exposed out of the dispenser port 6, fitting in the deep indentations 6H.
  • the dispenser-port-forming region 5 may be devoid of the flaring sections 52 as shown in Fig. 7 . Further, the dispenser-port-forming region 5 may be provided with one or more straight easy-tear lines connected to the easy-tear line disposed in loop, as long as the effects of the present invention are not disturbed.
  • 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.
  • Such a contour of the dispenser-port-forming region 5 provides curved convex sections 53 particularly broader in the depth direction.
  • the contour also provides still broader and larger free edge flaps 51A to be formed in the vicinity of the boundaries of the narrowed section 51, which allows the narrowed section 51 to open widely upon withdrawal of the sheets, resulting in smooth dispensing of the sanitary tissue paper sheets 2 from the bundle 3.
  • 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 paper 2, 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.
  • each curved convex section 53 gently rolls the sanitary tissue paper sheet 2 along its edge, which enhances the stand-up property of the hard-to-warp stiff sanitary tissue paper 2.
  • 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 dispenser-port-forming region 5 has, in the portion defining the boundary of at least one of its ends in the width direction (the other end 5B in the illustrated embodiment) as particularly shown in Figs . 5 and 6 , an easy-tear line 50 having a perforated line wherein modified cut areas 50D each having a major cut part 50m and a dogleg peripheral cut part 50e contiguous to an end of the major cut part 50m at an angle of 90° or larger, are arranged in a line with uncut areas 50U interposed therebetween.
  • Each modified cut area 50D may be, as shown in Fig.
  • a modified cut area 50D 1 having only one end provided with the dogleg peripheral cut part 50e, or a modified cut area 50D 2 having both ends provided with the dogleg peripheral cut parts 50e, and the modified cut areas 50D may be a mixture of these two.
  • the portion may be composed only of the modified cut areas 50D 1 having only one end provided with the dogleg peripheral cut part 50e.
  • a cut area 50C without a peripheral cut part 50e may be arranged in a perforated line wherein the modified cut areas 50D are arranged in a line with the uncut areas 50U interposed therebetween.
  • 80% or more of the portion of the easy-tear line 50 defining the boundary of a curved convex section 53 is a portion 50P where the modified cut areas 50D and the uncut areas 50U are arranged alternately.
  • preferably 90% or more, particularly preferably 95% or more of the portion may be the portion 50P where the modified cut areas 50D and the uncut areas 50U are arranged alternately. All of the portion may be formed with the modified cut areas 50D and the uncut areas 50U arranged alternately. Note that, though Figs.
  • FIG. 5 and 6 illustrate the embodiments wherein the portion defining the boundary of a curved convex section 53 has the modified cut areas 50D and the uncut areas 50U arranged alternately
  • the present invention is not limited thereto, but a portion defining the boundary of an end of a dispenser-port-forming region 5 having a simple approximate elliptical shape as shown in Fig. 7 may be formed of the modified cut areas 50D and the uncut areas 50U arranged alternately.
  • the peripheral cut part 50e of the modified cut area 50D has, as shown particularly in Fig. 5 , a first cut subpart 50e 1 contiguous to the major cut part 50m and a second cut subpart 50e 2 contiguous to the first cut subpart 50e 1 , which contiguously form a dogleg at an angle ⁇ of 90° or larger therebetween.
  • the layout of the modified cut areas 50D in the portion wherein the modified cut areas 50D and the uncut areas 50U are arranged alternately is such that the peripheral cut parts 50e of modified cut areas 50D partly overlap in the width direction of the dispenser-port-forming region with the ends 50t without a peripheral cut part of respective adjacent modified cut areas 50D on at least one of the outside and the side closer to the center in the width direction of the dispenser-port-forming region 5, and the peripheral cut parts 50e overlap in the width direction of the dispenser-port-forming region 5 with the respective ends 50t without a peripheral cut part such that a modified cut area 50D located on the outer side in the width direction of the dispenser-port-forming region 5 is positioned on the outer side in the width direction of the dispenser-port-forming region 5.
  • peripheral cut parts 50e overlap in the width direction with the ends 50t only on the outside in the width direction of the dispenser-port-forming region 5, but the peripheral cut parts 50e are not necessarily located on the outside in the width direction of the dispenser-port-forming region 5, and may be arranged to overlap in the width direction with the ends 50t only on the side closer to the center in the width direction of the dispenser-port-forming region 5 as in the embodiment of Fig.
  • peripheral cut parts 50e overlap in the width direction with the ends 50t on the outside in the width direction of the dispenser-port-forming region 5 while the some other peripheral cut parts 50e overlap in the width direction with the ends 50t on the side closer to the center in the width direction of the dispenser-port-forming region 5 as shown in Fig. 6(a) .
  • the peripheral cut parts 50e overlap in the width direction with the respective ends 50t such that, not the peripheral cut parts 50e per se, but the modified cut areas 50D having the peripheral cut parts 50e and located on an outer side in the width direction of the dispenser-port-forming region 5 than the respective adjacent modified cut areas 50D are positioned on the outer side.
  • the same may preferably be applied to embodiments wherein the peripheral cut parts 50e overlap in the width direction with a cut area 50C without a peripheral cut part 50e and, when a cut area 50C without a peripheral cut part 50e is located outer side in the width direction of the dispenser-port-forming region 5 than the adjacent modified cut area 50D as shown in Fig. 6(b) , the two may preferably overlap in the width direction with each other such that an end of the cut area 50C without a peripheral cut part 50e is positioned outer side in the width direction of the dispenser-port-forming region 5 than the peripheral cut part 50e of the adjacent modified cut area 50D.
  • the second cut subpart 50e 2 of a peripheral cut part 50e is preferably arranged substantially in parallel to the major cut part 50m.
  • substantially in parallel does not necessarily mean “completely in parallel”, and may allow a margin of generally ⁇ 10°.
  • the portion 50P where the modified cut areas 50D and the uncut areas 50U are arranged alternately is provided on an 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, which is the last to be tear-opened and the most prone to ripping in the usual opening operation by continuously peeling the region bounded by the easy-tear line 50 from one end 5A toward the other end 5B.
  • the peripheral cut part 50e of one modified cut area 50D overlaps in the width direction of the dispenser-port-forming region with an end 50t without a peripheral cut part of the adjacent modified cut area 50D at the boundary on the other end 5B, particularly such that one of the peripheral cut part 50e and the end 50t without a peripheral cut part of the modified cut area 50D located on the outer side in the width direction is positioned on the outer side in the width direction than the other of the peripheral cut part 50e and the end 50t of the adjacent modified cut area 50D.
  • the peripheral cut part 50e that has already been cut out is present at a location further in the direction of peeling in the outer side in the width direction compared to the uncut area 50U. Accordingly, even if small ripping is generated in the packaging film while the uncut area 50U between the modified cut areas 50D is tear-opened during the opening operation, the small ripping is likely to connect immediately to the peripheral cut part 50e of the adjacent modified cut area 50D that has already been cut out, so that no further ripping is likely to proceed.
  • the ends of the adjacent modified cut areas 50D are offset both in the width direction and in the depth direction, so that in the usual opening operation of the packaged product by continuously peeling the region bounded by the easy-tear line 50 from one end 5a toward the other end 5B, the uncut area 50U between the adjacent modified cut areas 50D is twisted immediately before being torn, and thus ripping or elongation of the film may hardly occur.
  • the modified cut areas 50D and the uncut areas 50U are arranged alternately, the packaged product is easily openable, and the risk of ripping during the opening may be reduced.
  • the cuts are opened smoothly from the peripheral cut part 50e to the major cut part 50m. Further, the cuts are opened still more smoothly with the first cut subpart 50e 1 and the second cut subpart 50e 2 arranged at an angle of 90° or larger.
  • the dispenser-port-forming region 5 providing particularly excellent withdrawability of stiff paper towels or the like, which is in the form of an approximate gourd shape having the narrowed section 51, flaring sections 52, and the curved convex sections 53 as shown in Figs. 1 to 5 and has the dimensions in the preferred numerical ranges discussed above, the portion of the easy-tear line defining the boundary of a curved convex section 53 is broad and arranged along the depth direction, which may result in a large angle formed between the peeling direction for opening and the direction of tear-opening along the easy-tear line, and thus likely ripping of the packaging film 4 in the opening operation.
  • the risk of the ripping is significantly reduced.
  • This is particularly effective with the packaging configuration, such as pillow wrapping or gusset wrapping, which is prone to ripping as the longitudinal direction (MD) of the packaging film 4 is parallel to the longitudinal direction of the dispenser-port-forming region 5.
  • 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 a modified cut area 50D 2 having each end provided with the peripheral cut part 50e which overlaps in the width direction of the dispenser-port-forming region 5 with the adjacent end of the adjacent modified cut area 50D on the outside in the width direction of the dispenser-port-forming region 5.
  • the modified cut area 50D located outward in the depth direction of the modified cut area 50D 2 on each side thereof is a modified cut area 50D 1 having only one end provided with the peripheral cut part 50e which overlaps in the width direction of the dispenser-port-forming region 5 with the adjacent end of the adjacent modified cut area 50D on the outside in the width direction of the region 5, the only one end being 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 at a position further in the direction of peeling outer side in the width direction, so that even if small ripping is generated in the packaging film while the uncut area 50U between the adjacent modified cut areas 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 out, so that no further ripping is likely to proceed.
  • the ratio in length between the modified cut areas 50D and the uncut areas 50U on an end of the dispenser-port-forming region 5 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 the first cut subpart 50e 1 and the length of L9 of the second cut subpart 50e 2 of each peripheral cut part 50e may not necessarily be the same, and may respectively 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.
  • the dimension L12 of overlap between the peripheral cut part 50e of one modified cut area 50D and the end without a peripheral cut part of the adjacent modified cut area 50D is not particularly limited, but may be 0.2 mm to 3.0 mm, preferably 0.3 m 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 first cut subpart 50e 1 of the peripheral cut part 50e and the angle ⁇ between the first cut subpart 50e 1 and the second cut subpart 50e 2 may not necessarily be the same, and may respectively fall within a range of 90° or larger, preferably 100° or larger, more preferably 120° or larger.
  • the transition from the major cut part 50m to the first cut subpart 50e 1 and the transition from the first cut subpart 50e 1 and the second cut subpart 50e 2 are preferably rounded, though not necessarily identically, and the curvature of the rounding 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 along the modified cut areas smoothly proceeds from the major cut part 50m to the peripheral cut part 50e or from the peripheral cut part 50e to the major cut part 50m.
  • the portion 50P 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 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 53A on one side of the depth direction is formed as a continuous cut area, as shown in Fig. 8(a).
  • a tab 5T is formed in the part 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 thickness of the packaging film 4 may suitably be selected, and preferably 20 to 75 ⁇ m as measured in accordance with JIS P 8118 (1998). With the thickness of 20 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.
  • a portion of the easy-tear line 50 defining the dispenser-port-forming region 5 according to the present invention other than where the cut areas 50C and the uncut areas 50U are arranged alternately, may be a perforated line, a slit cut line having uncut areas, or the like, but is not limited thereto.
  • 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, with the standard perforated line being preferred.
  • a slit cut line refers to slit-like areas 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 standard straight cut areas, i.e., a line in which two consecutive standard 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 in the portion of the easy-tear line 50 other than where the cut areas 50C and the uncut areas 50U are arranged alternately 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 area) within a range of 0.3 mm to 5.0 mm.
  • Part or all of the uncut areas 50U of the easy-tear line 50 according to the present invention may be half-cut areas, in each of which the packaging film 4 is not completely cut through in its thickness direction from the top surface, which does not face the bundle 3, down to the bottom surface, which faces the bundle, but is cut for a certain extent in the thickness direction.
  • the uncut areas 50U between the modified cut areas 50D on an end of the dispenser-port-forming region 5, particularly the curved convex section 53 may be half-cut areas.
  • the extent of the cut at the half-cut areas is not limited, but may preferably be 20% to 80% the thickness of the packaging film.
  • the boundaries of the narrowed section 51 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 not substituted with the 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 where the cut areas 50C and the half-cut areas are arranged alternately.
  • packaged products were prepared in Examples 1 to 4 according to the present invention and in Comparative Examples 1 and 2, and tested for fall back of the sanitary tissue paper sheets inside the products and for ripping of the dispenser port.
  • the dispenser-port-forming regions of the packaged products in Examples 1 to 4 and Comparative Example 1 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 2 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, in Examples 1 to 4, wherein the portion of the easy-tear line defining the boundary on an end (curved convex section) of the dispenser-port-forming region has the modified cut areas and the uncut areas arranged alternately, irrespective of the fact that the maximum dimension in the depth direction of the dispenser port, i.e., the dimension in the depth direction of the curved convex sections, which are on the ends of the dispenser-port-forming region, is as long as 35 mm, which occupies as much as 30% the dimension in the depth direction of the top face of the bundle, and is thus easy to rip, no ripping on the ends of the dispenser port was observed in the opening operation in any of the samples.
  • ripping on an end of the dispenser port in the opening operation may further be prevented by forming the portion of the easy-tear line which defines the boundary on an end with the modified cut areas and the uncut areas arranged alternately.
  • the packaged product according to the present invention is a film-packaged product which is hard to be ripped on an end in the width direction of the dispenser port upon opening and thus provides excellent openability, and also provides 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)
  • Packages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP22824575.9A 2021-06-15 2022-03-16 Packaging body Pending EP4286296A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021099233A JP2022190792A (ja) 2021-06-15 2021-06-15 包装体
PCT/JP2022/012005 WO2022264578A1 (ja) 2021-06-15 2022-03-16 包装体

Publications (1)

Publication Number Publication Date
EP4286296A1 true EP4286296A1 (en) 2023-12-06

Family

ID=84527022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22824575.9A Pending EP4286296A1 (en) 2021-06-15 2022-03-16 Packaging body

Country Status (6)

Country Link
US (1) US20240199310A1 (ja)
EP (1) EP4286296A1 (ja)
JP (1) JP2022190792A (ja)
CN (1) CN116744828A (ja)
TW (1) TW202300415A (ja)
WO (1) WO2022264578A1 (ja)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6117028U (ja) * 1984-07-05 1986-01-31 凸版印刷株式会社 紙箱のジツパ−
JP3069849U (ja) * 1999-12-21 2000-07-04 丸金印刷株式会社 医薬品などの包装用箱
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
JP6767298B2 (ja) * 2017-03-31 2020-10-14 大王製紙株式会社 フィルム包装ティシュー
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
US11021305B2 (en) * 2018-05-11 2021-06-01 Sonoco Development, Inc. Child resistant peelable packaging
JP7224121B2 (ja) * 2018-06-29 2023-02-17 大王製紙株式会社 衛生薄葉紙包装体
BR112021010183A2 (pt) * 2018-11-29 2021-08-17 Daio Paper Corporation embalagem para folhas

Also Published As

Publication number Publication date
TW202300415A (zh) 2023-01-01
CN116744828A (zh) 2023-09-12
US20240199310A1 (en) 2024-06-20
WO2022264578A1 (ja) 2022-12-22
JP2022190792A (ja) 2022-12-27

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
JP6771000B2 (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
EP4286296A1 (en) Packaging body
EP4286295A1 (en) Wrapped body
JP2014129113A (ja) 衛生薄葉紙包装体
EP4019429A1 (en) Film packaging for tissue
WO2022209909A1 (ja) 包装体
JP7169789B2 (ja) 衛生薄葉紙包装体
WO2022209718A1 (ja) 包装体
JP2022190792A5 (ja)
JP2022156859A5 (ja)
JP2022156860A5 (ja)
JP2022154667A5 (ja)
JP2022154668A (ja) 包装体
CN114391000B (zh) 膜包装抽纸集合包装体
JP7423885B2 (ja) ロール製品パッケージ
JP2022154668A5 (ja)

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: 20230829

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