Patent Application
20220348392
The present invention relates to a film-packaged tissue assembly package in which a plurality of film-packaged tissues each obtained by packaging a tissue paper bundle having folded and stacked tissue paper with a flexible packaging film are collectively gusset-packaged.
A tissue paper package also called a box tissue (hereinafter, also referred to as a box product) is well known in which a tissue paper bundle is included in a paper storage box called a carton box.
Since the box product 101B is excellent in shape stability of a paper storage box forming an outer envelope, five or three box products are generally arranged in such a manner as to be stacked in a vertical direction and turned into an assembly-packaged (or pack-packaged) product form 110B bundled by an outer packaging film 111 as shown in
On the other hand, as the tissue paper package, a tissue paper package also referred to as a film-packaged tissue is known in which a tissue paper bundle is packaged with a flexible packaging film made of resin.
As the film-packaged tissue, one referred to as a pocket tissue and suitable for portable use is well known, and there is also a film-packaged tissue that is used in a stationary manner like a box product or used for refilling of a bundle of a box product.
Such a film-packaged tissue used mainly in a stationary manner is a so-called pop-up type in which when the uppermost sheet of the included bundle is drawn out from the included bundle, a part of the next sheet is drawn out. Such a film-packaged tissue is more advantageous than a box product in reduction of packaging materials, and transportation cost reduction and portability associated with compactness.
On the other hand, like a box product, such a film-packaged tissue used mainly in a stationary manner has been sold as an assembly-packaged product form in which a plurality of tissues, e.g. five or three tissues are stacked in a vertical direction in a vertically abutting manner and bundled by an outer packaging film.
In particular, an assembly package of a film-packaged tissue which is different from a tissue for portable use and is used mainly in a stationary manner, etc. has a certain level of volume, and thus is preferably a gusset packaging with a grip portion in which a grip portion is provided on the top surface side for easy carriage.
However, in gusset packaging, spaces are formed particularly on the top surface side and the bottom surface side because of the structure, and therefore when five or three film-packaged tissues are arranged in such a manner as to be stacked in a vertical direction in a vertically abutting manner as in the case of a box product, shape stability is lost, so that when a large number of tissues are stacked at a storefront to be sold at a store etc., the tissues may collapse.
In addition, such a conventional assembly package in which a plurality of tissues, e.g. five or three tissues are stacked in a vertical direction in a vertically abutting manner and bundled by an outer packaging film may have an openable portion formed by arranging a perforation or the like for enhancing openability.
However, in the conventional assembly package, for example, the longitudinal direction of the film-packaged tissue is a traverse direction orthogonal to the vertical direction, and therefore an opening forming portion in which merely a perforation or the like is arranged so as to form a slit in a linear manner in a vertical direction has a problem that it is difficult to take out an inside film-packaged tissue. When in contrast, the opening forming portion is formed in such a manner that a perforation or the like is arranged along a traverse direction orthogonal to the vertical direction, there is a problem that the possibility increases that opening occurs unintentionally because a force is applied in a direction of tearing the perforation when the grip portion is held.
On the other hand, it is known that as in the technique disclosed in Patent Literature 1 below, the film-packaged tissue can be compressed by forming suction and exhaust holes in the film-packaged tissue, and the tissue is assembly-packaged by gusset packaging in such a manner as to be restrained by an assembly packaging film in a compressed state, so that the tissue has high shape retainability as a whole like a box product, and is suitable for stacked display at a storefront.
However, if such a compressed state continues for a long period of time, the fullness of the tissue paper may be deteriorated. In particular, in a tissue paper having a high moisture content such as a moisturizing tissue containing a chemical liquid or in a high-humidity environment, the risk further increases.
In addition, in gusset packaging, spaces are likely to be formed particularly on the top surface side and the bottom surface side because of the structure, and therefore if bindingness is excessively decreased by reducing the compressibility of the film-packaged tissue, the included film-packaged tissue easily moves. In the film-packaged tissue, the sealed portion formed by heat sealing or the like of the packaging film is hard, and therefore if the included film-packaged tissue easily moves, the hard portion and the outer packaging film forming the gusset packaging are rubbed against each other, so that the possibility of breakage increases.
The present invention has been made to solve the various problems described above, and a main object of the present invention is to provide a film-packaged tissue assembly package in which the fullness of included tissue paper is hardly reduced, the package is excellent in shape retainability so that the package is easily stacked and sold at a storefront, etc., an assembly packaging film is hardly damaged, and the package is also excellent in drawability in an included film-packaged tissue, and openability and portability of the assembly package.
The means for achieving the above-described object is as follows.
The first means is:
a film-packaged tissue assembly package including a gusset packaging bag having a grip portion on the top surface side, and a plurality of film-packaged tissues arranged and packaged in the gusset packaging bag, wherein
the film-packaged tissue is a overwrap-packaged product of a tissue paper bundle having a substantially rectangular solid shape in which a plurality of tissue papers are folded and stacked, the film-packaged tissue has an end surface formed by a barrel opening sealing portion at each of both ends thereof in a longitudinal direction, the end surface is located so as to face the short side surfaces of the bundle, and the film-packaged tissue has an outlet forming portion for tissue paper on an upper surface thereof;
a plurality of the film-packaged tissues of the film-packaged tissue assembly package are arranged in a substantially rectangular parallelepiped shape with each end surface facing the top surface side with a grip portion and the bottom surface side opposed to the top surface side to make the end surfaces substantially flush with each other and the long side surfaces substantially flush with each other and are packaged with the gusset packaging bag gusset portion facing the upper and lower surfaces of the film-packaged tissue; and
an openable portion formed by an easily tearable line is formed on a top surface portion located above a position corresponding to an uppermost portion of the film-packaged tissue stored in the gusset packaging bag and below the grip portion, the width of the openable portion in a direction orthogonal to a vertical direction being 40 to 100% of a distance between the upper and lower surfaces of the film-packaged tissue.
The second means is:
the film-packaged tissue assembly package according to the first means, wherein the openable portion is formed by arranging the easily tearable line in a curved shape so as to protrude toward the top surface side.
The third means is:
the film-packaged tissue assembly package according to the first or second means, wherein in the gusset packaging bag, the film-packaged tissues are arranged in two or less stages in the vertical direction in such a manner that the end surfaces of the film-packaged tissues are abutted against each other.
The fourth means is:
the film-packaged tissue assembly package according to the first to third means, wherein a compression ratio in a direction orthogonal to the vertical direction of a film-packaged tissue assembly arranged in the gusset packaging bag is 80% or more.
The fifth means is:
the film-packaged tissue assembly package according to the first to fourth means, wherein a bundle filling ratio of the film-packaged tissues is 100% or more.
According to the present invention, there is provided a film-packaged tissue assembly package in which the fullness of included tissue paper is hardly reduced, the package is excellent in shape retainability so that the package is easily stacked and sold at a storefront, etc., an assembly packaging film is hardly damaged, and the package is also excellent in drawability in an included film-packaged tissue, and openability and portability of the assembly package.
Hereinafter, the present invention will be described with reference to
In a film-packaged tissue assembly package 10 (hereinafter, also referred to as an assembly package) according to the present invention, a plurality of film-packaged tissues 1 in which a bundle 3 obtained by folding and stacking a plurality of sets of tissue paper 2 is packaged with a flexible packaging film 4 are arranged and gusset-packaged so as to be included in a gusset packaging bag 13 having a grip portion 45 on the top surface side.
The film-packaged tissue 1 according to the present invention is obtained by overwrap-packaging the bundle 3. The overwrap packaging is a wrapping mode also referred to as caramel packaging or mating wrapping packaging. In particular, as shown in
In the overwrap packaging, the end surface 4A has a substantially planar shape, so that the outer packaging of the packaging film 4 has a substantially rectangular parallelepiped shape close to a box. In addition, the end surface 4A has high stiffness, is hardly crushed, and easily maintains a substantially rectangular parallelepiped shape because the packaging film 4 is formed by staking and bonding a plurality of layers.
Therefore, when the film-packaged tissue 1 is overwrap-packaged, the product shape is substantially rectangular parallelepiped, and therefore, as shown in
The tissue paper bundle 3 included in the film-packaged tissue 1 is a pop-up type. In the pop-up type bundle 3, for example, substantially rectangular tissue paper 2 of about 197±10 mm in length×217±10 mm in width is folded in two, and a plurality of tissue papers 2 are folded and stacked such that folded pieces 2B of other tissue papers 2 located on the upper side and the lower side are located on the folded inner side 2A particularly as shown in
The above-described pop-up type bundle 3 has a substantially rectangular solid shape having a pair of long side surfaces 3B on which the folded edges 2C of the respective tissue papers 2 are arranged, a pair of short side surfaces 3A on which the folded edges 2C are not arranged, and further a pair of planar surfaces (upper and lower surfaces) 3C connected to the short side surfaces 3A and the long side surfaces 3B. In addition, the bundle has flexibility and is easily compressed and deformed because it is composed of soft tissue paper 2.
The number of sets of tissue paper 2 forming the bundle 3 is not limited, and is generally 100 to 240 with 2 plies (two sheets stacked) or 3 plies (three sheets stacked) set to one set. The size of the bundle 3 is not necessarily limited, and a bundle of 150 sets of 2-ply tissue paper is approximately 40 to 50 mm in height, 160 to 200 mm in longitudinal direction (width) and 90 to 110 mm in lateral direction (depth). As is apparent from this shape, the film-packaged tissue 1 according to the present invention is not a portable tissue so called a pocket tissue etc. in which the number of sets of included tissue paper is about 10 to 12 and the height is about 10 mm.
In the film-packaged tissue 1 according to the present invention, the end surface 4A formed by sealing the barrel opening 4Z is present at a position facing the short side surface 3A of the bundle 3, and the outlet forming portion 5 is formed at a position facing the uppermost tissue paper 2 of the bundle 3 of the packaging film 4. In particular, the film-packaged tissue paper 1 is obtained by overwrap-packaging the pop-up type bundle 3 of substantially rectangular solid-shaped tissue paper 2 in which the tissue paper 2 is folded in two and a plurality of tissue papers 2 are folded and stacked such that folded pieces 2B of other tissue papers 2 located on the upper side and the lower side are located on the folded inner side 2A, the outlet forming portion 5 for tissue paper is present on the upper surface, and the end surface 4A as a sealing portion of the barrel opening 4X is located so as to face the short side surface 3A on which the folded edges 2C of the bundle 3 are not arranged.
In the bundle 3 of a pop-up type as described above, when the uppermost tissue paper 2 of the bundle 3 is drawn out from the outlet, a part of the next tissue paper located immediately below the uppermost tissue paper 2 is exposed to the outside through the opening. In addition, the film-packaged tissue 1 configured as described above has a structure in which tissue paper is stacked in a direction along which the end surface 4A having high stiffness rises, so that even if a compressive force from the bundle stacking direction (up-down direction) is applied, and the bundle 3 is hardly compressed, and thus fullness is hardly deteriorated.
In the film-packaged tissue 1, a suction and exhaust hole communicating with the inside and the outside may be formed for preventing rupture or the like in case of application of an external force. The end surface 4A facing the short side surface 3A on which the folded edges 2C of the bundle 3 of the packaging film 4 are not arranged may be provided with a suction and exhaust hole, but it is desirable that there be no suction and exhaust hole at this position. When the end surface 4A is provided with a suction and exhaust hole, the end surface 4A becomes more fragile, so that the advantage of overwrap packaging that the end surface 4A has high stiffness is compromised.
Here, the outlet forming portion 5 according to the present invention is formed along a longitudinal direction at the middle portion of the upper surface 4C in the lateral direction. The outlet forming portion 5 can be formed by a perforation in which cut portions 50C and non-cut portions 50U also referred to as tie portions are alternately arranged, or a slit cut provided with non-cut portions 50C.
An outlet for drawing out tissue paper 2 is formed on the upper surface 4C of the film-packaged tissue 1 by separating and removing an inner portion of the outlet forming portion 5, which is an area surrounded by the perforation or the like, or by tearing the perforation or the like. The perforation and the slit cut may be partially separately arranged. They can be formed by, for example, die cutting.
It is desirable that the outlet forming portion 5 according to the present invention have a shape in which longitudinal-direction end portions 5A and 5B protrudes toward the outside in the longitudinal direction. Examples thereof include shapes in which perforations etc. located at longitudinal-direction end portions 5A and 5B are arranged in such a manner that they are curved so as to protrude toward the outside in the longitudinal direction as shown in
When the longitudinal-direction end portions 5A and 5B are shaped to protrude toward the outside in the longitudinal direction as described above, the protruding portion of one end portion is easily grasped, and easily peeled off continuously while being grasped and moved toward the other end portion, so that excellent openability is attained. In addition, since the root portion of tissue paper partially exposed from the outlet is deformed along the convex portion, the tissue paper easily rises and is less likely to fall into the inside.
In particular, as a suitable shape of the outlet forming portion 5, a shape is desirable in which a slit portion 51 extending in the longitudinal direction, a wide portion 52 communicating with an end portion of the slit portion 51 and gradually increasing in width with distance from the slit portion 51 in the longitudinal direction and an end portion 53 continuously protruding toward the outside in the longitudinal direction are present at the central portion of the upper surface 4C in the lateral direction, as shown in
The width (lateral-direction length) of the slit portion 51 is 10 mm or less, preferably 7 mm or less in the lateral direction. As shown in
In the outlet formed as a shape of the outlet forming portion 5 shown in
The cut tie ratio in the perforation and the cut slit with a non-cut portion, which form the outlet forming portion 5, can be appropriately determined depending on the ease of breakage of a film used, and as a preferred example, the cut portion has a length of 0.8 mm or more and 5.0 mm or less, and the non-cut portion (tie portion) has a length of 0.3 mm or more and 5.0 mm or less. In addition, it is desirable that in the outlet forming portion 5 according to the present invention, a slit cut provided with an uncut portion form the longitudinal-direction end portions 5A and 5B and a perforation form the area between the end portions 5A and 5B rather than forming the entire portion by a perforation. As shown in
Here, it is desirable that the outlet forming portion 5 according to the present invention have a shape in which the longitudinal-direction end portions 5A and 5C protrude toward the outside as described above, and the longitudinal-direction end of at least one longitudinal-direction end portion 5A be the non-cut portion 50U. This is because when the longitudinal-direction end is the non-cut portion 50U, the longitudinal-direction end portion 5A of the outlet forming portion 5 is hardly turned up and the risk of being unintentionally opened is considerably reduced even if the upper surface of the film-packaged tissue is rubbed from the longitudinal-direction end portion 5A side, on which the non-cut portion 50U is provided, toward the opposite longitudinal-direction end portion 5B side. On the other hand, it is more preferable that in the outlet forming portion 5, one end portion 5B has the cut portion 50C as a longitudinal-direction end and the other end portion 5A has the non-cut portion 50U as a longitudinal-direction end. In the outlet forming portion 5 having this configuration, the longitudinal-direction end portion 5A of the outlet forming portion 5 is hardly turned up and the risk of being unintentionally opened is considerably reduced even if the upper surface of the film-packaged tissue is rubbed from the longitudinal-direction end portion 5A side, on which the non-cut portion 50U is provided, toward the opposite longitudinal-direction end portion 5B side, and at the end portion 5B where the longitudinal-direction end is the cut portion 50C, the end edge thereof is easily grasped, resulting in excellent opening operability. The configuration of the outlet forming portion 5 of the film-packaged tissue 1 according to the present invention has an excellent advantage that the end portion 5A is hardly turned up during and after inclusion of the film-packaged tissue in a gusset packaging bag in the arrangement configuration of the film-packaged tissue 1 according to the present invention.
Specific examples of the flexible packaging film 4 made of resin, which forms the outer packaging of the film-packaged tissue 1 include a monolayer film of polyethylene, polypropylene, polyester, polyethylene terephthalate, nylon, vinylidene chloride, and ethylene vinyl alcohol copolymer, and a laminate film including these films which are appropriately stacked, and a gas barrier film obtained by subjecting these films to surface treatment such as aluminum vapor deposition. In addition, a biomass film derived from plant raw materials such as sugar cane, potato (starch) and corn can be used. The use of such a biomass film is desirable from the viewpoint of environmental protection.
Polypropylene films and polyethylene films are suitable from the viewpoint of cost. The packaging film 4 may be a matte film excellent in design property and hand feel property. Further, when odorous materials such as scented tissue paper are packaged, ethylene vinyl alcohol copolymer resin films and polyethylene terephthalate resin films having an excellent aroma retaining property are desirable. The film may be a multilayer resin film in which a polyethylene resin film or a polypropylene resin film is stacked on one surface or both surfaces of an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film to improve heat weldability.
The thickness of the packaging film 4 may be appropriately selected with consideration given to flexibility, cost, gas permeability, and heat weldability, and it is desirable that the packaging film 4 have a thickness of 25 to 75 μm as measured in accordance with JIS P 8118 (1998) and a softness of 5.0 to 50.0 cN as measured by a handle-o-meter method conforming to JIS L 1096 (2010) E method. When the thickness is 25 to 75 μm, the stiffness of the end surface 4A is sufficiently enhanced. In addition, when having such a thickness and softness, the packaging film 4 is hardly broken, and is likely to be excellent in drawability, particularly pop-up property, of tissue paper. The thickness is measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G-1A Type” (manufactured by OZAKI MFG. CO., LTD.) or an equivalent machine after the measurement sample is sufficiently humidity-conditioned under the conditions of JIS P 8111 (1998).
On the other hand, in the film-packaged tissue assembly package 10 according to the present invention, a plurality of overwrap-packaged film-packaged tissues 1 are gusset packaged in the gusset packaging bag 13 in such a manner that the end surface 4A faces the top surface side on which a grip portion is present and the bottom surface side opposed to the top surface side, and the longitudinal direction is along the vertical direction.
The gusset packaging is a wrapping mode in which the film-packaged article to be gusset-packaged is included in a bag-shaped space present between bonded portions 41 and 42 formed by heat welding or the like on the top and bottom sides, and in particular, gusset portions 43 and 43 are present between the front surface and the back surface. For example, as shown in
The outlet forming portion 5 has a shape in which a perforation having cut portions 50C and non-cut portions 50U arranged alternately protrudes toward the outside, and a longitudinal-direction end of at least one longitudinal-direction end portion 5A of the outlet forming portion is the non-cut portion 50U. In such a case, when a film-packaged tissue assembly is inserted from a side where the non-cut portion 50U is present at the time when the film-packaged tissue assembly is inserted into a barrel-shaped film closed on one side or opened at both ends, which is a precursor of a gusset packaging bag, the outlet forming portion 5 is not turned up from the longitudinal-direction end portion 5A side thereof and thus the outlet forming portion 5 is prevented from being torn and opened unintentionally during production even if the gusset packaging film 14 forming the gusset packaging bag and the outlet forming portion 5 formed on the upper surface 4C of the film-packaged tissue 1 are rubbed against each other at the time of the insertion. In addition, formation of an assembly package having a poor appearance in which one longitudinal-direction end portion 5A of the outlet forming portion 5 is turned up is prevented.
The grip portion 45 is an extra portion provided on the top surface side of the top surface side sealing portion 41, which is a boundary on the top surface side with the bag portion including the film-packaged tissue 1, for enhancing the portability of the assembly package. In the illustrated form, a finger hook hole 47 is formed. When the finger hook hole 47 is formed in the grip portion 45 as described above, the portability of the assembly package is further enhanced. The same applies to a slit provided with an opening allowing a finger to be hooked, instead of the finger hook hole 47, and a finger hook slit may also be applied to the present invention.
It is desirable that the gusset packaging film 14 be a polypropylene film or a polyethylene film from the viewpoint of cost and an openability. The melting point of the film is preferably 150° C. or lower. A lower melting point of the packaging film is more preferable in sealing and formation of a grip portion because heat welding treatment can be performed at a lower temperature. If the melting point is excessively low, there is an increased possibility that the packaging film is scratched or a hole is formed by, for example, friction particularly with a square portion 4t of the end surface 4A of the film-packaged tissue 1. Therefore, the substantial lower limit is 80° C. Examples of the polyethylene film include linear low-density polyethylene films (LLDPE), low-density polyethylene films (LDPE) and medium-density polyethylene films (MDPE). Among them, in the present invention, linear low-density polyethylene film layers (LLDPE) having a density of 0.910 to 0.940 g/cm3 and a melting point of 110 to 120° C. are particularly suitable from the viewpoint of heat weldability and cost. A monolayer film of polyethylene terephthalate film, a nylon film, a vinylidene chloride film, and ethylene vinyl alcohol copolymer, a laminate film including any of these films which are appropriately stacked, or a gas barrier film obtained by subjecting any of these films to surface treatment such as aluminum vapor deposition. As in the case of the packaging film 4, biomass films derived from plant raw materials such as sugar cane, potato (starch) and corn can be used. The use of such a biomass film for the gusset packaging film is also desirable from the viewpoint of environmental protection.
The thickness of the gusset packaging film 14 forming the gusset packaging bag 13 is appropriately selected with consideration given to a relationship with the included film-packaged tissue 1 in addition to the flexibility, cost, and heat weldability during packaging, the circumstances peculiar to gusset packaging, such as tearability that enables easy opening during opening, abrasion resistance particularly against the end surface square portion 4t of the included film-packaged tissue 1, and flexibility which ensures that an excessive load is not applied to a finger when the packaging bag is carried with the finger put in a finger hook hole provided on the grip portion.
For the preferred thickness and softness of the gusset packaging film 14 from the above-mentioned viewpoint, the thickness measured in accordance with JIS P 8118 (1998) is 10 to 65 μm, and softness measured by a handle-o-meter method conforming to JIS L 1096 (2010) E method is 5.0 to 50.0 cN.
In particular, it is desirable that the softness of the gusset packaging film 14 forming the gusset packaging bag 13 be lower than the softness of the packaging film 4 forming the film-packaged tissue 1. In the gusset packaging bag 13 having a grip portion on the top surface side, the gusset packaging bag 13 is pulled in a vertical direction when the grip portion 45 is held, and therefore at this time, pressure may be applied to the film-packaged tissues 1, 1 . . . , which are packaged articles included, but when the softness of the gusset packaging film 14 is low, the rectangular parallelepiped shape of the included film-packaged tissue 1 is hardly deformed, the inside bundle 3 is not pressurized, fullness is hardly deteriorated, and drawability such as a pop-up property is hardly deteriorated.
In the film-packaged tissue assembly according to the present invention, the arrangement configuration of film-packaged tissues 1 in the gusset packaging bag 14 is such that a plurality of film-packaged tissues 1,1 . . . are arranged in a substantially rectangular parallelepiped shape as a whole with the end surfaces 4A being substantially flush with each other and the long side surfaces 4B being substantially flush with each other as shown in the figures. When the film-packaged tissues are arranged in a substantially rectangular parallelepiped shape as described above, stability and shape retainability as a whole of the assembly are enhanced, and the assembly is hardly collapsed or ruptured by an external force. In addition, when the film-packaged tissues are arranged in this manner, an assembly of the film-packaged tissues 1 has a rectangular parallelepiped shape in which a end surface assembly surface having high stiffness is formed on the top and bottom surfaces, resulting in reduction of the possibility that the film-packaged tissue 1 is ruptured or the film-packaged tissue 1 is damaged by an external force particularly in the vertical direction.
Here, as described above, for the gusset packaging bag 13 having the grip portion 45 on the top surface side, the gusset packaging bag 13 is pulled in the vertical direction when the grip portion 45 is held, and therefore at this time, the film-packaged article included and the gusset packaging film 14 may be rubbed with each other. In the gusset packaging bag 13, the ridge line 14E between the gusset portion 43 and the front surface 46 and the ridge line 14E between the gusset portion 43 and the back surface 46, which are the fold lines 14E of the gusset tube as a precursor of the packaging bag, may be fragile. As shown in
There will be described the case where a film-packaged tissue that is larger in mass as compared to a portable film-packaged tissue and is used as a stationary type is brought into, for example, a configuration 110A in which film-packaged tissues 101A each having a end surface 104A obtained by sealing a barrel opening of an overwrap packaging are stacked and arranged in such a manner that the end surface 104 faces in a direction orthogonal to the vertical direction as in a conventional box product as shown in
In the assembly package according to the present invention, film-packaged tissues 1, 1 . . . are packaged in such a manner that the end surfaces 4A face the top surface side on which the grip portion 45 portion is present and the bottom surface side opposed to the top surface side, and the longitudinal direction is along the vertical direction, so that such a risk is markedly small. For reducing such a risk, two or less stages in the vertical direction are desirable as the number and the assembly configuration of the film-packaged tissues 1 in the gusset packaging bag 13. If the number of stages in the vertical direction is more than two, the shape retainability of the assembly package is deteriorated. Specifically, in the assembly package 10 according to the present invention, the longitudinal direction of the film-packaged tissue 1 is a direction along the vertical direction, and therefore if the number of stages is more than two and three or more, uprightness in the vertical direction is deteriorated, and slippage is easily generated between the stages, so that the gusset packaging film 14 and the film-packaged tissue 1 are easily rubbed with each other. In addition, the number of portions where the square portion 4t of the end surface 4A of the film-packaged tissue 1 and the gusset packaging film 14 contact each other increases, so that the risk of damage to the gusset packaging film 14 becomes high. However, when at least the same number of tissues is packaged, the arrangement configuration according to the present invention is superior to the reference configuration in which the tissues are stacked in such a manner that the end surfaces 4A face in a direction orthogonal to the vertical direction.
Further, as described above, for the gusset packaging bag 13 having the grip portion 45 on the top surface side, the gusset packaging bag 13 is pulled in the vertical direction when the grip portion 45 is held and subsequently, the gusset packaging bag is placed with the bottom on the lower side. At this time, the film-packaged tissue included may be rubbed with the packaged article and the gusset packaging film 14. At this time, the rubbing easily occurs particularly on the top surface side where there is an abundance of internal space. Therefore, as described above, in the film-packaged tissue including the preferred outlet forming portion 5, where outlet forming portion is formed by a perforation or the like having cut portions 50C and non-cut portions 50U arranged alternately, the outlet forming portion has a shape in which the longitudinal-direction end portions 5A and 5B protrudes toward the outside, and the longitudinal-direction end of at least one longitudinal-direction end portions 5A is the non-cut portion 50U, when gusset packaging is performed in such a manner that a side where the non-cut portion 50U is present is located on the top surface side, the possibility decreases that the end portion 5A of the outlet forming portion 5 is turned up or the outlet forming portion is unintentionally opened if such rubbing occurs.
The number of film-packaged tissues 1 arranged in a direction orthogonal to the vertical direction is not particularly limited, and six or less rows are desirable. Examples of the preferred configuration include an arrangement configuration of a total of five or six tissues with one stage in the vertical direction and five rows or six rows (not shown) in a direction orthogonal to the vertical direction as shown in
Here, in the assembly package 10 according to the present invention, an openable portion 70 for opening which is formed by an easily tearable line for facilitating opening is formed characteristically. Examples of the easily tearable line include perforations or cut slits having non-cut portions. The cut tie ratio in the easily tearable line can be appropriately determined depending on the ease of breakage of a film used, and as a preferred example, the cut portion has a length of 0.8 mm or more and 5.0 mm or less, and the non-cut portion (tie portion) has a length of 0.3 mm or more and 5.0 mm or less. In addition, a part of the easily tearable line related to the openable portion 70 according to the present invention may be formed by a perforation and the other part may be formed by a slit cut or a slit cut provided with an uncut portion rather than forming the entire portion by a perforation.
As shown particularly in
In the top surface portion 44, a force applied to the top surface portion 44 varies depending on a position of the finger hook hole 47 when the tissue is lifted with the finger placed in the finger hook hole 47. Specifically, the tensile forces on the region Z1 extending to the front surface 46 and the back surface 46 from the lower end of the portion of the grip portion 45 which is provided with the finger hook hole 47 is smaller than that on the region extending to the front surface 26 and the back surface 26 from the lower end of the portion which is not provided with the finger hook hole 47. In addition, the top surface portion 44 is a portion that is easily visible to the user. Therefore, when the openable portion 70 is provided at such a position, unintentional opening does not occur during carriage, and it is easy to visually recognize the openable portion 70.
The openable portion has a shape having a width L5 at least in a traverse direction orthogonal to the vertical direction. The width L5 is 40 to 100% of the distance between the upper and lower surfaces of the film-packaged tissue. If the ratio is less than 40%, it is difficult to take out the film-packaged tissue, and if the ratio is more than 100%, there is a high possibility that after a film-packaged tissue is drawn out, the remaining film-packaged tissue is unintentionally dropped from an opening formed by the openable portion. Examples of the specific configuration of the openable portion 70 include one in which the easily tearable line is arranged in a curved shape so as to protrude toward the top surface side where the grip portion 45 is present as in the configuration shown in
The distance between the upper and lower surfaces of the film-packaged tissue in relation to the width L5 of the openable portion is measured as follows. First, the film-packaged tissue 1 is humidity-conditioned for 24 hours under an environment of a standard condition of 23° C.±1° C. and a humidity of 50±2% r.h in accordance with JIS P 8111, and placed on a horizontal table with the upper surface facing upward, a distance L1 between vertexes of the square portions 4t of the end surfaces 4A is measured at four points, and an average value thereof is calculated. This value is calculated for each gusset-packaged film-packaged tissue, and an average value thereof is calculated and defined as a distance between the upper and lower surfaces of the film-packaged tissue.
Further, in the film-packaged tissue assembly package 10 according to the present invention, it is desirable that the bundle filling ratio of the film-packaged tissue 1 be 100% or more. Here, the bundle filling ratio is a ratio of the height of the bundle 3 drawn out from the packaging film 4 to the height of the film-packaged tissue 1. For the specific measurement method, first, the film-packaged tissue 1 is humidity-conditioned for 24 hours under an environment of a standard condition of 23° C.±1° C. and a humidity of 50±2% r.h in accordance with JIS P 8111, and placed on a horizontal table with the upper surface facing upward, and the height of the film-packaged tissue 1 is measured. The measured value is an average of values obtained by measuring the distance L1 between the vertexes of the square portions 4t of the end surfaces 4A at four points. Next, the bundle 3 is drawn out from the film-packaged tissue 1, humidity-conditioned for 24 hours under an environment of a standard condition of 23° C.±1° C. and a humidity of 50±2% r.h in accordance with JIS P 8111, and placed on a horizontal table with the upper surface facing upward, a hard polyacrylate plate sized to protrude from each edge (short side edge and long side edge) of the upper surface of the bundle 3 by 5 cm or less is placed on the upper surface of the bundle 3. The measured value is an average of values obtained by measuring the distance between the square portions of the short side surface 3A facing the end surfaces 4A. Next, a ratio of the height of the bundle 3 drawn out from the packaging film 4 to the height of the film-packaged tissue 1 is calculated from each measured value.
In such a film-packaged tissue 1 having a bundle filling ratio of more than 100%, the bundle 3 pushes the packaging film 4 from the inside. In the overwrap packaging, the end surface 4A has high stiffness and is difficult to stretch or deform. On the other hand, portions facing the upper and lower surfaces and the long side surfaces of the bundle 3 of the packaging films 4 have flexibility, and therefore the positions and the longitudinal edges 1E of these portions are deformed so as to slightly protrude. When the film-packaged tissue 1 in which the longitudinal edge 1E protrudes as described above is assembly-packaged in such a manner that the longitudinal direction is along the vertical direction with respect to the top surface side where the grip portion 45 is present and the bottom surface side facing the top surface side, the square portion 4t of the end surface 4A is hardly abut against the gusset packaging film 14 forming the gusset packaging bag 13 by protrusion of the longitudinal edge 1E when the gusset packaging bag is pulled in the vertical direction by holding the grip portion 45, so that the risk of breakage of the gusset packaging bag 13 decreases.
Further, in the film-packaged tissue assembly package 10 according to the present invention, it is desirable that the compression ratio in a direction orthogonal to the vertical direction of a film-packaged tissue assembly arranged in the gusset packaging bag be 80% or more. Here, the compression ratio in a direction orthogonal to the vertical direction is a ratio of (the distance between the gusset portions of the gusset packaging bag (the width of the front surface or the back surface)) L2 to (the length of the film-packaged tissue assembly in a non-packaged state in a direction orthogonal to the vertical direction) where the film-packaged tissue 1 is packaged in such a manner that the gusset portion 43 of the gusset packaging bag 14 faces the upper and lower surfaces 3C of the film-packaged tissue 1. The length of the film-packaged tissue assembly in a non-packaged state in a direction orthogonal to the vertical direction is calculated by (height of one film-packaged tissue in vertical direction)×(number of tissues arranged in direction orthogonal to vertical direction). The height of one film-packaged tissue in the vertical direction is different from the height associated with the bundle filling ratio, and is measured as follows.
First, individual film-packaged tissues 1 are draw out from the film-packaged tissue assembly package 10, and humidity-conditioned for 24 hours under an environment of a standard condition of 23° C.±1° C. and a humidity of 50±2% r.h in accordance with JIS P 8111. Next, the film-packaged tissue 1 is placed on a horizontal table, and a hard polyacrylate plate sized to protrude from each edge (short side edge and long side edge) of the upper surface by 5 cm or less is placed on the upper surface. When the size of the upper surface of the bundle is 160 to 200 mm in the longitudinal direction (width)×90 to 110 mm in depth, the size of the polyacrylate plate may be 250 mm×130 mm. The mass is 32 g or less. Next, the height of polyacrylate plate from the square horizontal table is measured, and an average value thereof is calculated. This measurement is performed for all film-packaged tissues drawn out. A further average value of the calculated average values is defined as a height of one film-packaged tissue 1 in the vertical direction. A value obtained by multiplying the calculated value by the number tissues arranged is defined as a “length of the film-packaged assembly in a non-packaged state in a direction orthogonal to the vertical direction”. Subsequently, a distance between the gusset portions 43 of the gusset packaging bag 13 is measured. The measured value is an average of values obtained by measuring each of the width of the front surface 46 (distance between fold lines of the front surface) and the width of the back surface 46 (distance between fold lines of the back surface) at three points. Subsequently, a ratio of the distance between the gusset portions (the width of the front surface or the back surface) of the gusset packaging bag 13 to the length of the film-packaged assembly in a non-packaged state in a direction orthogonal to the vertical direction is calculated.
If the compression ratio in a direction orthogonal to the vertical direction of the film-packaged tissue assembly arranged in the gusset packaging bag 13 is more than 90%, the end surface 4A is distorted and the fullness of the tissue paper 2 is easily deteriorated because of the excessively high compression ratio. The upper limit of the compression ratio is not particularly limited in the wrapping mode according to the present invention. The compression ratio is not limited as long as the film-packaged tissue does not move excessively in the gusset packaging bag. The compression ratio is not necessarily required to be 100% or less. However, when the compression ratio is 100% or less, movement of the film-packaged tissue assembly is restricted by an outer packaging film forming the gusset packaging bag, the outer packaging film is less likely to be broken, the assembly package does not collapse, and the shape retainability of the rectangular parallelepiped is enhanced. It is more desirable that the compression ratio be 100% or less.
On the other hand, individual tissue paper 2 forming the bundle 3 packaged in the film-packaged tissue 1 has a ply structure in which two to three thin sheets having a crepe are laminated to form a set. The tissue paper 2 is a dry-type tissue paper, and is not a so-called wet-type tissue paper which is impregnated with a chemical liquid. Therefore, the bundle 3 formed by the tissue paper 2 contains a large amount of air. Some of dry-type tissue papers 2 are chemical liquid-addition-type tissue papers in which a chemical liquid such as a moisturizing component increasing moisture by moisture absorption, such as a polyol typified by glycerin, and such tissue papers are included. Rather, the chemical liquid-addition-type tissue paper has a high moisture content, and is therefore less restorable when compressed, the effect of little decrease in fullness according to the present invention is effectively exhibited. The moisture content of the chemical liquid-addition-type is about 10 to 14 mass %. The moisture content is a ratio of moisture contained in the tissue paper under a standard condition.
The raw material pulp of the thin sheet forming the tissue paper 2 is one obtained by blending NBKP and LBKP. Waste paper pulp may be blended, and the raw material pulp is preferably one composed only of NBKP and LBKP from the viewpoint of texture etc. The blending ratio is preferably NBKP:LBKP=20:80 to 80:20, particularly preferably NBKP:LBKP=30:70 to 60:40.
The basis weight per one thin sheet forming each ply of the tissue paper 2 is 10 to 25 g/m2. The basis weight per ply is more preferably 12 to 18 g/m2. The basis weight here is based on the measurement method of JIS P 8124 (1998). The sheet thickness of the tissue paper 2 in a state of 2 plies is 90 to 200 μm, more preferably 90 to 140 μm. The thickness is 120 to 300 μm in a state of 3 plies. The sheet thickness is a value obtained by sufficiently humidity-conditioning the test piece under the conditions of JIS P 8111 (1998) and then performing measurement in a state of multiple plies under the same conditions using a dial thickness gauge (thickness measuring instrument) “PEACOCK G Type” (manufactured by OZAKI MFG. CO., LTD.) or an equivalent machine.
When the tissue paper having the above-described basis weight and sheet thickness is formed into an assembly package having a low compression ratio according to the present invention, in particular, fullness is not reduced, and its effect is sufficiently exhibited. The vertical direction and the up-down direction in the present invention and the present description are appropriately changed depending on the orientation of the film-packaged tissue assembly package and the film-packaged tissue, and do not mean absolute directions.
An openable portion according to the present invention and a comparative example thereof were tested for the drawability, openability and storability of a film-packaged tissue.
The results are as shown in Table 1 below. As shown in
In the test for drawability, sensory evaluation was performed in which operability at the time of carrying out the operation of drawing out the film-packaged tissue from an outlet formed by breaking the openable portion was evaluated at 1 to 5 points. There are five subjects. The evaluation is as follows: 5 points . . . “easy to draw out”, 4 points . . . “slightly easy to draw out”, 3 points . . . “gray”, 2 points . . . “slightly difficult to draw out”, 1 point . . . “difficult to draw out”. In the table, ⊙ indicates the subject average score of 4.5 points or more, o indicates 4.0 to 4.4 points, A indicates 3.5 to 3.9 points, and x indicates 3.4 points or less.
In the test for openability, sensory evaluation was performed in which operability at the time of carrying out the operation of forming an outlet by breaking the openable portion was evaluated at 1 to 5 points. There are five subjects. The evaluation is as follows: 5 points . . . “easy to open”, 4 points . . . “slightly easy to open”, 3 points . . . “gray”, 2 points . . . “slightly difficult to open”, 1 point . . . “difficult to open”. In the table, ⊙ indicates the subject average score of 4.5 points or more, ∘ indicates 4.0 to 4.4 points, A indicates 3.5 to 3.9 points, and x indicates 3.4 points or less.
For the storability, the area of the openable portion after the drawability test was measured. A sample having an area of 80 to 99 cm2 was rated ⊙, a sample having a larger area of 100 to 119 cm2 was rated ∘, a sample having an area of 120 to 139 cm2 was rated Δ, and a sample having an area of 140 cm2 or more was rated x.
As shown in Table 1, it has been found that the configuration of the openable portion according to the present invention is excellent in drawability, openability and storability.
Subsequently, Comparative Example 4 was prepared in which an openable portion located and configured according to the present invention was provided in a conventional marketed product gusset-packaged such that five film-packaged tissues were vertically stacked and arranged as a configuration of a conventional film-packaged tissue assembly package. The drawability of the included film-packaged tissue was compared with that of the film-packaged tissue according to the present invention. As the film-packaged tissue according to the present invention, one having a configuration of Example 4 in Test Example 1 above.
In the drawability test here, sensory evaluation was performed in which operability at the time of carrying out the operation of drawing out the film-packaged tissue from an outlet formed by breaking the openable portion and then pulling the broken portion downward to tear the packaging film was evaluated at 1 to 5 points. There are five subjects. The evaluation is as follows: 5 points . . . “easy to draw out”, 4 points . . . “slightly easy to draw out”, 3 points . . . “gray”, 2 points . . . “slightly difficult to draw out”, 1 point . . . “difficult to draw out”. In the table, ⊙ indicates the subject average score of 4.5 points or more, ∘ indicates 4.0 to 4.4 points, Δ indicates 3.5 to 3.9 points, and x indicates 3.4 points or less.
The results are as shown in Table 2 below.
As shown in Table 2, in the film-packaged tissue assembly package according to the present invention, the tissue paper can be adequately drawn out through an outlet having a length of 100 mm in the up-down direction. One having a conventional arrangement configuration is poor in drawability even when the outlet has a length of 200 mm in the up-down direction.
It has been found that the film-packaged tissue assembly package of the present invention allows the tissue paper to be sufficiently easily drawn out even if the length of the outlet in the up-down direction is shorter as compared to one having a conventional arrangement configuration.
As described above, the film-packaged tissue assembly package according to the present invention is excellent in drawability of the included film-packaged tissue and openability of the assembly package.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-181555 | Oct 2019 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/035745 | 9/23/2020 | WO |
