Film wrapped tissue

Abstract

The present application provides a film-wrapped tissue pack from which a paper towel of 3 or more layers can be easily taken out. This problem is solved by a film-wrapped tissue pack in which a bundle of paper towels is wrapped with a soft, resin-made wrapping film, and which has a take-out port forming portion on the upper surface, the paper towel being a 3- or 4-layer paper towel having a basis weight of 12.5 to 22.5 g / m 2 2 per 1 layer and a paper thickness of 185 to 285 μm, the take-out port forming portion being formed by arranging a breakable line in which cutting portions and non-cutting portions are alternately arranged in a ring shape, and being formed in an elongated shape in which the central portion in the depth direction of the upper surface of the film-wrapped tissue pack extends in the width direction and the both end portions protrude toward the outside, and in which the arrangement of the cutting portions and the non-cutting portions at each end portion in the width direction is different, the length in the width direction of the take-out port forming portion being 60 to 75% of the width of the upper surface of the film-wrapped tissue pack, and the maximum length in the depth direction being 6 to 15% of the length in the depth direction of the upper surface of the film-wrapped tissue pack.

Description

Technical Field

[0001] This invention relates to film-packaged tissues, which are made by packaging a bundle of folded and stacked tissues with a soft packaging film. Background Technology

[0002] Paper towels generally have a layered structure made of multiple overlapping sheets. In the past, for example in Japan, since paper towels were mainly used for blowing the nose and wiping the face around the mouth during meals, two-layer paper towels with excellent softness or flexibility, known as 2-layer paper towels, became the mainstream (for example, Patent Documents 1 and 2 below).

[0003] On the other hand, in Asian countries outside of Japan, as well as in Europe and America, tissues are frequently used not only for facial purposes but also for wiping other skin and objects. This necessitates a "thick and tear-resistant" quality, leading to a high demand for tissues with multiple layers, such as 3-ply or 4-ply sheets. Furthermore, for these multi-layered tissues (more than 2 layers), each pack is heavy and rigid.

[0004] On the other hand, tissues are used in the form of a tissue package containing bundles of tissues stacked together. Among these tissue packages, there are known tissue packages also called film-packaged tissues, which are made by wrapping the bundles of tissues with a soft packaging film made of resin. As such film-packaged tissues, there are known portable film-packaged tissues called pocket tissues, but similar to tissue boxes (hereinafter also referred to as boxed packages), which are tissue bundles placed inside a paper storage box called a cardboard box, there are cases where they are used in a fixed manner or used as refilling bundles of boxed packages.

[0005] Such film-packaged tissues, used in a fixed manner, are of the so-called pop-up type: for the inner bundle, when the top sheet is pulled out, a portion of the next sheet is also pulled out. Compared to boxed packages, this film-packaged tissue has advantages in terms of reduced packaging material, lower transportation costs based on compactness, and portability.

[0006] On the other hand, in order to reduce costs, the perforation lines used to form the dispensing opening on the upper surface of conventional film-packaged tissues are usually simple, straight, slit-type perforation lines.

[0007] However, for the slit-like opening formed by opening such a perforated line, in particular, if the slit length is increased, there is a problem: when the number of sheets remaining inside decreases, the sheets will fall inside; on the other hand, if the slit length is shortened, there is a problem: initially after opening, it is difficult to pull a sheet out of the film, and the extraction resistance is too high in the early stages of use, causing the outer film to be lifted up along with the sheet when it is pulled out.

[0008] Therefore, in order to improve such problems, the perforation line used to form the take-out outlet by die-cutting or other demolding techniques is configured as a long and thin ring extending in the long side direction, and the opening of the take-out outlet is configured as a wide opening with a width in the depth direction (see Patent Documents 1 and 2 below).

[0009] However, conventional elongated annular dispensing openings are designed for two-ply tissues with excellent softness or flexibility. For example, in Patent Document 1, the length in the depth direction is set to 15-28% relative to the depth direction of the thin paper bundle. However, such dispensing openings, primarily suitable for two-ply tissues, may not be suitable for the aforementioned three-ply or four-ply tissues with higher rigidity. In particular, for three-ply and four-ply tissues, since their rigidity is higher than that of two-ply tissues, it is necessary to increase the width of the opening to ensure good dispensing. However, the balance between this and drop prevention is different from that of two-ply tissues, making it difficult to design them in the same way as for two-ply tissues.

[0010] On the other hand, hygiene concepts and lifestyles vary from country to country and region to region. In the punched opening area with a depth direction width disclosed in Patent Document 2, the opening is too large, which is considered by many to make it easy for foreign objects to get in, and is therefore not considered preferred. If such needs are also taken into account, it is preferable to reduce the opening area, but if only the opening area is reduced, the ease of removal and opening will be reduced.

[0011] Existing technical documents

[0012] Patent documents

[0013] Patent Document 1: Japanese Patent Application Publication No. 2018-052559

[0014] Patent Document 2: Japanese Patent Application Publication No. 2018-058654 Summary of the Invention

[0015] The problem that the invention aims to solve

[0016] Therefore, in view of the above problems, the main objective of the present invention is to provide a film-packaged tissue that gives the impression that foreign objects are difficult to mix in and can be used hygienically, and has excellent opening properties, making it easy to remove even high-quality and rigid 3-ply or more tissues per set.

[0017] Methods for solving problems

[0018] The methods used to solve the above problems are as follows.

[0019] Its first method is a film-packaged tissue, characterized in that,

[0020] The film-packaged tissues are tissues wrapped in a soft resin-based packaging film.

[0021] The paper towel has a base weight of 12.5g / m² per layer. 2 ~22.5g / m 2 Furthermore, the paper towels are 3- or 4-ply, with a paper thickness of 185μm to 285μm.

[0022] The film-packaged tissue has a dispensing opening on its upper surface.

[0023] The extraction port forming portion is formed by arranging easily ruptured lines, which are alternately arranged with cutting portions and non-cutting portions, in a ring shape. The extraction port forming portion is an elongated shape that extends from the center of the depth direction along the width direction on the upper surface and protrudes outward at both ends.

[0024] The length of the outlet forming portion in the width direction is 60% to 75% of the width of the upper surface, and the maximum length of the outlet forming portion in the depth direction is 6% to 15% of the length of the upper surface in the depth direction.

[0025] The second method is the same as the first method described above, using film-packaged tissues.

[0026] The B value of the packaging film on the upper surface, measured by the KES-FB2-S bending tester, is 0.093 gf × cm. 2 / cm or less, 2HB value is 0.033gf×cm / cm or less.

[0027] The paper towel's B value, measured by the KES-FB2-S bending tester, is 0.010 gf × cm. 2 / cm~0.022gf×cm 2 / cm, 2HB value is 0.012gf×cm / cm~0.029gf×cm / cm.

[0028] The third method is a film-packaged tissue box using the first or second method described above.

[0029] The outlet forming portion has the following shape: a narrow portion that extends along the long side at the center in the width direction; a widening portion that communicates with the end of the narrow portion and gradually widens as it moves away from the narrow portion in the width direction; and a protrusion that is continuous with the widening portion and bulges outward in the width direction.

[0030] The fourth method is the same as the third method described above, using film-packaged tissues.

[0031] The length of the narrow portion in the width direction is 35% to 65% of the length of the upper surface, and the length of the narrow portion in the depth direction is 3% to 7% of the length of the upper surface in the depth direction.

[0032] The fifth method is the same as the third method described above, using film-packaged tissues.

[0033] At least one end of the exit forming portion is a cut portion that extends from the middle of the widened portion on one side in the depth direction to a position beyond the outer end of the protrusion.

[0034] The sixth method is the same as the first to fifth methods of film-packaged tissues described above.

[0035] Regarding the outlet forming portion, the configuration of the cutting portion and the non-cutting portion at each end in the width direction is different, and a cutting portion is positioned at the outer end of at least one end.

[0036] The seventh method is the film-packaged tissue paper described in the first to sixth methods above.

[0037] Film-packaged tissues are made by overlapping and packaging a bundle of tissues that are folded and stacked into a roughly rectangular shape. The end surface formed by the sealing part of the tube opening is located facing the short side of the bundle, and the adhesive part formed by the overlapping and bonding of the packaging film is located facing one long side.

[0038] The effects of the invention

[0039] According to the present invention, a film-packaged tissue paper is provided that gives the impression that foreign objects are difficult to mix in and can be used hygienically, and has excellent openability, even for high-quality and rigid three-ply or more tissue paper in each set, it is easy to remove. Attached Figure Description

[0040] Figure 1 This is a perspective view illustrating the film-packaged tissue paper of the present invention.

[0041] Figure 2 It is a three-dimensional diagram used to illustrate the packaging structure of overlapping packaging.

[0042] Figure 3 It is a three-dimensional diagram used to illustrate a bundle of tissues.

[0043] Figure 4 This is a top view used to illustrate the outlet forming section.

[0044] Figure 5 This is a top view used to illustrate other outlet formations.

[0045] Figure 6 This is a diagram used to illustrate another outlet formation section.

[0046] Figure 7 This is a diagram used to illustrate the configuration of other cutting and non-cutting sections in other outlet forming sections.

[0047] Figure 8 This is a graph illustrating the B value and 2HB value of the pure bending stiffness of the present invention. Detailed Implementation

[0048] Hereinafter, reference will be made to embodiments thereof. Figures 1 to 7 This will be explained. Furthermore, the directions such as up / down and left / right in this invention and specification are appropriately varied depending on the orientation of the tissue paper in the film packaging, and do not imply absolute directions.

[0049] The film-packaged tissue 1 of this embodiment is formed by wrapping a bundle 3 of multiple sets of tissues 2 with a soft packaging film 4. The film-packaged tissue 1 is formed by pillow-style or overlapping wrapping of the bundle 3, and has an outlet forming portion 5 on the upper surface 4C. Preferably, it is formed into a generally hexahedral shape having a lower surface 4D facing the upper surface 4C, and an end surface 4A and a long side surface 4B located between the upper surface 4C and the lower surface 4D. More preferably, the bundle 3 is wrapped in overlapping layers.

[0050] Overlapping packaging, also known as caramel packaging or double-wrap packaging, is a type of packaging, especially as... Figure 1 and Figure 2 As shown, the packaging is as follows: the bundle 3, which is to be packaged, is rolled into a cylindrical shape and wrapped with openings 4Z at both ends of the packaging film 4 along its length. The overlapping portions 4X in the rolling direction are welded together or bonded with adhesive. The portions 4Y that extend beyond the bundle 3 are folded into the end face of the bundle 3 from near the two opposite edges of the bundle end face. At least each end edge of the generally triangular or generally trapezoidal sheet formed at this time is overlapped with each other and bonded together by welding or adhesive. The opening 4Z of the cylinder is sealed to form the end surface 4A.

[0051] In this overlapping packaging, the end surface 4A becomes approximately planar, thus the outer packaging based on the packaging film 4 becomes approximately rectangular (hexahedral) in shape, closer to that of a box. Furthermore, since the end surface 4A is formed by bonding multiple layers of the packaging film 4, it has high rigidity and is difficult to crush in the vertical direction, thus easily maintaining its approximately rectangular (hexahedral) shape. Moreover, if the overlapping portion 4X in the roll-in direction, bonded by welding or adhesive as shown in the diagram, is formed as a long side rather than the top and bottom surfaces, the three sides between the top and bottom surfaces have higher rigidity, making it even more difficult to crush in the vertical direction, thus easily maintaining its approximately rectangular (hexahedral) shape.

[0052] like Figure 3 As shown, the bundle 3 of tissues is a so-called pop-out bundle. Regarding this bundle, multiple tissues 2 are folded and stacked in such a way that the tissue 2 is folded in half and the folded-back pieces 2B of other tissues 2 located above and below are positioned on the inner side 2A of the fold. The bundle is configured as a roughly cuboid shape as follows: it has a pair of long side surfaces 3B with the folded-back edges 2C of each tissue 2 arranged and a pair of short side surfaces 3A with the folded-back edges 2C not arranged, and also has a pair of planes (upper and lower surfaces) 3C connected to the short side surfaces 3A and the long side surfaces 3B.

[0053] The number of tissue packs 2 constituting the bundle 3 is not limited in this invention; it is 3 to 240 packs, consisting of 3 layers (3 sheets overlapping) or 4 layers (4 sheets overlapping). The size of the bundle 3 is also not limited; when 100 packs of tissues are bundled, it is approximately 40 to 50 mm in height × 100 to 200 mm in the long side direction (width) × 90 to 120 mm in the short side direction (depth). Furthermore, as shown in this shape, the film-packaged tissue 1 of this invention is not a portable tissue box, such as a pocket tissue box, containing approximately ten to twelve packs of tissues and with a height of approximately 10 mm.

[0054] In this film-packaged tissue 1, the end surface 4A that seals the tube opening 4Z is positioned facing the short side 3A of the bundle 3, and an adhesive portion 4X, where the packaging films are stacked and bonded together, is arranged facing one long side 3B. A dispensing opening 5 is formed on the packaging film 4 facing the uppermost tissue 2 of the bundle 3. The filling rate of the bundle 3 is not necessarily limited, but the gap between the bundle and the packaging film is preferably in the range of 0 to 5 mm. The bundle can be packaged by the packaging film in a slightly compressed state in the vertical, depth, and width directions. It can be compressed in all directions, or only in any one or two directions. However, the degree of compression will not be so high as to excessively affect the ease of dispensing.

[0055] like Figures 4-6 As shown, the outlet forming part 5 is formed by arranging easily crackable lines 50, which are alternately arranged with cutting parts 50C and non-cutting parts 50U, also called connecting parts, in a ring shape. It extends in the width direction at the center of the depth direction on the upper surface 4C, and in particular, it becomes an elongated shape with its two ends 5A and 5B protruding outward in the width direction.

[0056] Regarding the dispensing opening forming section 5, by breaking the tear line 50 and separating and removing the area surrounded by the tear line 50, an opening is formed on the upper surface 4C of the film-packaged tissue 1 as a dispensing opening for pulling out the tissue 2. Then, when the uppermost tissue 2 of the bundle 3 is pulled out by forming the dispensing opening, a portion of the next tissue directly below it is exposed from the dispensing opening.

[0057] Regarding the easily crackable line 50, examples include perforated lines and slit cuts with uncut portions (non-cut portions), but it is not limited to these. Perforated lines and slit cuts with non-cut portions can also be partially separated. The easily crackable line can be formed, for example, by punching. The type of perforated line is not limited. Examples include conventional perforated lines with straight cut portions, micro-perforated lines with holes as cut portions, and perforated lines with Y-shaped, approximately L-shaped, or <-shaped cut portions. Conventional perforated lines are preferred. Slit cuts involve cutting the film into slit-like portions, but by having non-cut portions, the non-cut portions and cut portions are arranged alternately. Furthermore, slit cuts with non-cut portions are sometimes simply referred to as slit cuts. Perforated lines and slit cuts with non-cut portions can be formed simultaneously by punching, and then continuously formed separately via the non-cut portions. Therefore, they are sometimes not distinguished, but in this invention, when the cut portions are less than three intervals, i.e., cut portions of the same length are not consecutively formed three times, slit cuts are referred to as slit cuts. Typically, slot cutting is formed where the length of the cut section is longer than the length of the perforation line.

[0058] Furthermore, regarding the break-through ratio in the perforation line or slit cutting with non-cut portions forming the outlet forming portion 5, an appropriate interval is determined based on the ease of breakage of the membrane used. However, the length of the cut portion can be appropriately designed in the range of 0.8 mm or more and 20.0 mm or less, and the length of the non-cut portion (connecting portion or uncut portion) can be appropriately designed in the range of 0.3 mm or more and 5.0 mm or less.

[0059] Each tissue 2 constituting bundle 3 is referred to as a 3- or 4-layer structure consisting of 3 or 4 sheets stacked together. The basis weight of each layer of this tissue 2 is 12.5–22.5 g / m³. 2 The weight of each pack is preferably 1.2 to 2.4 g. For tissues made of 3 or 4 layers of sheet material with the above-mentioned basis weight, they possess "softness or suppleness" suitable for facial use and easily achieve a "thick and tear-resistant quality," making them easy to use not only for facial purposes but also for wiping other items. Furthermore, the paper thickness of each pack of this tissue is 185 to 285 μm. With the above-mentioned number of layers and basis weight, and the paper thickness within the above range, it has cushioning properties in the thickness direction, easily feels soft, and the 2-layer facial use is slightly thicker than the main use, easily creating the impression of being tear-resistant when wiping items other than skin.

[0060] Furthermore, the aforementioned basis weight refers to the basis weight based on the measurement method of JIS P 8124 (1998). The basis weight of each layer is calculated by basis weight = weight of each group of sheets / (sheet area × number of layers). In addition, paper thickness refers to the value measured under the same conditions using a dial-type thickness gauge "PEACOCK G type" (manufactured by Ozaki Corporation) and equivalent equipment in a multi-layer state after the test sheet has been fully conditioned under the conditions of JIS P 8111 (1998).

[0061] Furthermore, the tissue paper 2 of the present invention is a dry tissue paper after drying, not a so-called wet tissue paper containing a medicinal liquid. Therefore, the bundle 3 formed by the tissue paper 2 contains a large amount of air. Among the dry tissue paper 2, there are also medicinal liquid-filled tissue paper that are infused with a medicinal liquid, such as a moisturizing ingredient that enhances moisture by absorbing moisture through polyols such as glycerin.

[0062] The pulp used as the raw material for the tissue paper 2 is a blend of NBKP and LBKP. Waste paper pulp can also be mixed in, but considering factors such as feel, it is preferable to use only NBKP and LBKP. A blending ratio of NBKP:LBKP of 20:80 to 80:20 is preferred, and NBKP:LBKP of 30:70 to 60:40 is particularly good.

[0063] Here, the dispensing outlet forming portion 5 of the present invention is characterized in that its length L1 in the width direction is 60 to 80% of the width L2 of the upper surface 4C of the film-packaged tissue 1, and its maximum length L3 in the depth direction is 6 to 15% of the depth direction length L4 of the upper surface 4C of the film-packaged tissue 1. Preferably, the length in the width direction is 63 to 73% of the width of the upper surface of the bundle, and the maximum length in the depth direction is 6 to 12% of the depth direction length of the upper surface of the bundle. There is no limitation on the minimum length in the depth direction, but since the dispensing outlet forming portion 5 of the present invention is formed by arranging the easily tearable lines in a ring shape as described above, the gap is not formed by tearing through at least one perforated line, but rather has a width between two easily tearable lines separated along the depth direction. With such a dispensing outlet forming portion 5, by continuously stretching from one end 5A to the other end 5B, the film within the range of the dispensing outlet forming portion 5 can be separated and removed, thus providing excellent opening performance. Furthermore, compared to two-ply tissues primarily intended for facial use, the rigidity of the aforementioned three- to four-ply tissues with increased weight and thickness is improved. However, the dispensing opening formed by the dispensing opening forming portion 5, with its length L1 in the width direction relative to the upper surface 4C and its maximum length L3 in the depth direction within the aforementioned range, allows for smooth removal of the tissue 2. Additionally, the length in the depth direction relative to the upper surface 4C is shorter in each segment than in the past, thus giving the impression that foreign objects are less likely to get in, and enabling hygienic use.

[0064] Furthermore, since the dispensing opening 5 is an elongated shape with its two ends 5A and 5B protruding outwards, it is easy to pinch one end, facilitating continuous stretching from one end 5A towards the other end 5B or from the other end 5B towards one end 5A. Additionally, because the two ends 5A and 5B protrude outwards in this way, the root portions of both ends of the tissue paper 2, which are partially exposed from the dispensing opening, deform by rolling along the protruding portions, making it easy to stand up and difficult to fall inside. As a specific shape of the two ends 5A and 5B protruding outwards, for example… Figure 4 and Figure 5 As shown, a shape can be described in which the easily breakable lines 50 at the ends 5A and 5B in the long side direction are arranged in a curved manner, bulging outwards in the long side direction. Additionally, as... Figure 6 As shown, an example of such a shape is that the easily broken lines at the ends 5A and 5B in the long side direction are configured as a V-shape, wedge shape, or W-shape that protrudes outward in the long side direction.

[0065] On the other hand, in the film-packaged tissue 1 of this embodiment, which is particularly the overlapping packaging described above, since the tissue 2 is stacked in the direction where the highly rigid end surface 4A and the adhesive portion 4X are upright, even if a compressive force is applied from the stacking direction (vertical direction) of the bundle 3, the bundle 3 is difficult to compress, and the fluffiness is not easily reduced. Furthermore, since the packaging film in the film-packaged tissue 1 is soft, there is a situation where, when the tissue 2 is taken out, the packaging film 4 at the upper surface 4C position is stretched upward and deformed or twisted due to its resistance. In particular, the area around the opening formed by tearing and removing the area surrounded by the tear-resistant line 50 is prone to deformation. However, in the above-described overlapping packaging method, where the part facing the short side 3A of the bundle 3 is the end surface 4A and the position facing one long side 3B is the adhesive portion 4X, the rigidity of the three surfaces is improved. Compared with pillow-type packaging, the packaging film at the upper surface position is less prone to deformation and is more likely to maintain a planar shape. As a result, the outlet, which is the opening formed by the splitting of the outlet forming portion 5, is also less prone to twisting due to deformation. This difficulty in twisting further enhances the effect of setting the maximum length L1 in the depth direction of the outlet forming portion 5 to be narrower, making it particularly easy and stable to remove the tissues one by one.

[0066] On the other hand, in the film-packaged tissue paper 1 of the present invention, it is desirable that the B value of at least the upper surface 4C portion of the packaging film 4, measured using a KES-FB2-S bending tester, is 0.085 gf × cm. 2 The 2HB value is below 0.030 gf × cm / cm. Furthermore, it is desirable that for such a packaging film 4, and for the aforementioned tissue paper 2, the 2HB value measured using the KES-FB2-S bending tester, be 0.013 to 0.020 gf / cm. 2 / cm, 2HB value is 0.018~0.028gf×cm / cm. In the structure of the above-described dispensing opening forming part 5, when the rigidity of the packaging film 4 and the tissue 2 is combined as described above, in particular, the dispensing opening is easily formed for the packaging film 4, and the tissue 2 feels firm. Furthermore, combined with the structure of the maximum length of the depth and the length in the width direction of the dispensing opening forming part 5, the dispensing performance of the tissue 2 is particularly excellent. Moreover, the B value and 2HB value of the packaging film are the average values ​​obtained by measuring the bending rigidity of the film in the longitudinal direction three times, and the B value and 2HB value of the tissue are the average values ​​obtained by measuring the bending rigidity of the paper in the transverse direction three times. Regarding the measurement direction of the packaging film and the tissue, the above measurement direction is set according to the deformation direction of the packaging film and the tissue when the tissue is dispensing.

[0067] When performing measurements using the KES-FB2-S bending tester, samples conditioned for at least 3 hours in a constant temperature and humidity chamber at 23°C and 50% humidity were used. The samples were 100mm wide, and the number of measurements was N=3. The average value was taken as the measured value. The measurement conditions are as follows.

[0068] SENS:4

[0069] Ambient temperature: 20±1℃

[0070] Ambient humidity: 60±1%

[0071] Bending speed: SET (0.5cm) -1 / sec)

[0072] Curvature: SET (±2.5cm) -1 )

[0073] Here, as Figure 8 As shown, the B value measured using the KES-FB2-S bending tester represents the slope of the bending curvature in the range of 0.5–1.5 / -0.5–1.5, while 2HB represents the hysteresis (amplitude) in the range of bending curvature in the range of 1.0 / -1.0. The B value is related to the softness and stiffness felt by a person when bending an object; a larger B value indicates greater bending stiffness, and a smaller B value indicates greater softness. Furthermore, 2HB is related to the force required to recover after a person bends the object – the restorative (elastic) feel; a larger 2HB value (wider 2HB amplitude) indicates less restorative force, and a smaller 2HB value (narrower 2HB amplitude) indicates greater restorative force. Also, regarding the KES-FB2-S bending tester, for example, the bending direction of the sample during measurement differs from that of the KES-FB2-A.

[0074] On the other hand, specific examples of the flexible resin-based packaging film 4 constituting the outer casing of the film-packaged tissue 1 include polyethylene film, polypropylene film, polyester film, polyethylene terephthalate film, nylon film, vinylidene chloride film, single-layer film of ethylene-vinyl alcohol copolymer, laminated films comprising these films, and gas-barrier films formed by surface treatments such as aluminum vapor deposition on these films. Alternatively, biomass films from plant materials such as sugarcane, potatoes (starch), and corn can also be used. From an environmental protection perspective, the use of such biomass films is preferred.

[0075] From a cost perspective, polypropylene film and polyethylene film are preferred. Alternatively, packaging film 4 can also be a pear-skin mask with a unique design or excellent feel. The melting point of the film is preferably below 150°C. Furthermore, the lower the melting point of the packaging film, the more suitable it is for heat-sealing at low temperatures, but the practical lower limit is 80°C. Examples of polypropylene include unstretched polypropylene film (CPP), and examples of polyethylene film include linear low-density polyethylene film (LLDPE), low-density polyethylene film (LDPE), and medium-density polyethylene film (MDPE).

[0076] Furthermore, if the packaging is for scented tissues or other scented paper towels, ethylene-vinyl alcohol copolymer resin films or polyethylene terephthalate resin films with excellent fragrance retention are preferred. Alternatively, multilayer resin films with polyethylene resin films or polypropylene resin films laminated on one or both sides of ethylene-vinyl alcohol copolymer resin films or polyethylene terephthalate resin films can be used to improve heat-sealing properties.

[0077] Regarding the thickness of the packaging film 4, any appropriate selection is acceptable, but a thickness of 25–75 μm as measured according to JIS P 8118 (1998) is preferred. A thickness of 25–75 μm makes it particularly easy to improve the rigidity of the end surface 4A in cases of overlapping packaging. This thickness can also be used for polypropylene and polyethylene films. Furthermore, with this thickness and softness, the packaging film 4 is less prone to tearing, and the tissue paper's removability, especially its elasticity, is excellent. The thickness is measured as follows: after fully conditioning the sample under the conditions specified in JIS P 8111 (1998), the thickness is measured using a dial-type thickness gauge (thickness measuring instrument) "PEACOCK G-1A type" (manufactured by Ozaki Manufacturing Co., Ltd.) or a similar product.

[0078] Here, it is particularly preferred that the shape of the suitable outlet forming part 5 is as follows: Figure 5 As shown, the upper surface 4C has a shape in which a narrow portion 51 extending in the width direction is located at the center of the depth direction, a widening portion 52 communicating with the end of the narrow portion 51 and gradually widening as it moves away from the narrow portion 51 in the long side direction, and a curved portion 53 continuously protruding outward in the long side direction. In this case, the narrow portion 51 is preferably characterized by a width direction length L5 of 40% to 65% of the length of the upper surface, and a depth direction length L6 of 3% to 7% of the depth direction length of the upper surface. The specific depth direction length of the narrow portion 51 is 8 mm or less in the short side direction, preferably 6 mm or less.

[0079] Regarding the above Figure 5The dispensing outlet, formed by the shape of the dispensing outlet forming portion 5 shown, has an edge piece 51A near the edge of the aforementioned narrow portion 51 that is easily movable in the vertical direction. Therefore, when a set of tissues 2 is pulled out from the bundle 3, this edge piece deforms in the direction of extraction and supports itself against the next set of tissues 2 that are exposed. This effect is particularly effective in the case of the B value and 2HB value of the aforementioned packaging film and tissues.

[0080] Furthermore, regarding the dispensing outlet based on the dispensing outlet forming section 5, for the next sheet of tissue paper that is continuous with the tissue paper pulled from the bundle 3 and partially exposed from the dispensing outlet, its width-direction edge is rolled along the edge of the curved section 53, thus easily deforming into a shape with high uprightness. In particular, in this Figure 5 In the dispensing outlet forming section 5 shown, it is difficult to generate the tissue paper falling into the internal space, which is easily generated in the overlapping packaging with the outer hexahedral shape.

[0081] Furthermore, regarding the outlet forming portion 5, the long-side ends 5A and 5B may be formed by slit cutting with a non-cut portion (also called an uncut portion), and the portion between them may be formed by perforation lines. Alternatively, only one long-side end may be formed by slit cutting, and the rest may be formed by perforation lines. The narrow and wide portions may be formed by perforation lines, and the curved portion 53 may be formed by slit cutting with a portion having an uncut portion. Alternatively, one long-side end 5A may be formed by slit cutting, and the rest up to the other long-side end 5B may be formed by perforation lines. In the outlet forming portion 5 of the present invention, the interval and length of the cut and uncut portions may be locally different. In this case, the break-through ratio will naturally also be locally different. Even when the interval and length of the cut and uncut portions are different, it is preferable to adjust them within the range of the lengths of the cut and uncut portions described above.

[0082] Here, it is desirable that the outlet forming portion 5 of the present invention, as described above, has a shape in which the ends 5A and 5B in the long side direction protrude outwards, and that the arrangement of the cut portion and the non-cut portion in each end 5A and 5B in the width direction is different, with a cut portion positioned at the outer end of at least one end 5A or the other end 5B. This makes it easy to pinch one or the other end where the cut portion is located, resulting in excellent opening operability. In this case, the end where the cut portion is located can be made into a slit cut, so that the cut portion exists slightly longer.

[0083] However, for example, depending on whether the packaging film 4 is a uniaxially extended film extending in a direction perpendicular to the length direction of the dispensing port forming portion, or the film thickness varies, when performing an operation to tear the dispensing port forming portion 5 by pinching one end 5B towards the other end 5A, there is sometimes a concern that if there is a non-cut portion 50C at the end on the end 5A side, the non-cut portion may not break, and the packaging film 4 may tear from this non-cut portion. In cases where this concern exists, it is sufficient to designate both ends in the long side direction as cut portions.

[0084] In addition, especially if the outlet forming section 5 is set as Figure 5 The shape shown has the following parts: a narrow portion 51; a widening portion 52 that connects to the end of the narrow portion 51 and gradually widens as it moves outward in the width direction away from the narrow portion 51; and a curved protrusion 53 that is continuous with the widening portion 52 and bulges outward in the width direction. It is desirable that, as shown... Figure 7 As shown in (C), at least one end of the outlet forming section 5 (in Figure 5 and Figure 7 The section L7, from the middle of the widened portion 52A on the depth side to a position exceeding the outer end 53t of the protrusion 53, is designated as a continuous cutting section 53C. If the cutting section 53C is configured in this way, then... Figure 7 As shown in (D), at the end of the outlet forming section 5, the range Z, including the area from one depth side to the outer side, becomes a free sheet, as shown in (D). Figure 7 As shown in (E), pinching the area Z and rolling it up makes the opening operation easy.

[0085] Furthermore, in the dispensing port formed by the preferred dispensing port forming portion of the present invention described above, it is desirable that the width of the narrow portion ([D] in Table 1 below) / the maximum length in the depth direction of the dispensing port forming portion ([A] in Table 1 below) be 3.5 to 20.0. The inventors have discovered that in the preferred dispensing port forming portion of the present invention described above, the width of the narrow portion / the maximum length in the depth direction of the dispensing port forming portion affects the tissue paper removal performance; in particular, if it falls within the aforementioned range, the tissue paper removal performance becomes good. Furthermore, if the width of the narrow portion / the maximum length in the depth direction of the dispensing port forming portion is 3.5 or more, the maximum length in the depth direction of the dispensing port forming portion is appropriate relative to the width of the narrow portion, and in particular, the tissue paper retention at both ends in the width direction of the dispensing port is improved. Additionally, if it is 20.0 or less, the maximum length in the depth direction of the dispensing port forming portion is appropriate relative to the width of the narrow portion, the tissue paper support force at both ends in the width direction of the dispensing port is improved, and the anti-tipping performance of the tissue paper exposed from the dispensing port is improved.

[0086] Furthermore, in the dispensing opening formed by the preferred dispensing opening forming portion of the present invention described above, it is desirable that the value of the width of the dispensing opening forming portion ([B] in Table 1 below) / the width L8 of the bulging protrusion ([E] in Table 1 below) is greater than 4.0, and the value of the width of the narrow portion ([D] in Table 1 below) / the width L8 of the bulging protrusion ([E] in Table 1 below) is greater than 2.0. The inventors have discovered that in the preferred dispensing opening forming portion of the present invention described above, both the maximum length in the depth direction of the dispensing opening forming portion / the width L8 of the bulging protrusion and the width of the narrow portion / the width L8 of the bulging protrusion affect the tissue paper's removability. In particular, when both are within the aforementioned ranges, the tissue paper's removability becomes good. When the value of the maximum length in the depth direction of the dispensing opening forming portion / the width L8 of the bulging protrusion is greater than 4.0, and the value of the width of the narrow portion / the width L8 of the bulging protrusion is greater than 2.0, the amount of deformation of the tissue paper partially exposed from the dispensing opening due to the edge of the dispensing opening is appropriate, thereby enabling smooth extraction. Example

[0087] Next, Examples 1 to 4 of the present invention and Comparative Example 1 were prepared, and together with Existing Examples 1 to 3, tests were conducted on the first sheet's removability, number of drops, and opening properties.

[0088] For "ease of removal of the first sheet," the test subjects actually used each sample and evaluated how easily the first sheet was removed. The values ​​in the table are averages of N=10. The evaluation was based on a maximum score of 5 points: 5 points for easy removal; 4 points for slightly easy removal; 3 points for neither; 2 points for slightly difficult removal; and 1 point for very difficult removal.

[0089] The term "fall-in count" refers to the number of times the tissue actually fell in when it was pulled out to the very end.

[0090] For "openability," test subjects performed the following operation on each sample and evaluated its ease of opening: grasping one end and pulling towards the other to open the seal. The values ​​in the table are averages of N=10. The evaluation was based on a maximum score of 5 points: 5 points for easy opening; 4 points for slightly easy opening; 3 points for neither; 2 points for slightly difficult opening; and 1 point for difficult opening.

[0091] Regarding the shape of the outlet forming part, Examples 1, 2, 3, Existing Example 1, and Comparative Example 2 are... Figure 5 The shape shown has a narrow section, a widened section, and a bulging, curved protrusion, each with different dimensions. Comparative Example 1, on the other hand, is different from the shape without the narrow and widened sections. Figure 4The shapes shown are the same. In Existing Example 3, the only difference is that the outlet forming part is a perforated line, and the outlet is a slit. Furthermore, for each embodiment and comparative example, the end on the opening start side is a cut portion. In particular, in Embodiments 1 and 2, as... Figure 7 The arrangement of a cut and non-cut section at one end, as shown, expands the range of the free sheet Z.

[0092] In addition, the B value and 2HB value of the packaging film and paper towel were measured under the above conditions using a KES-FB2-S bending tester manufactured by KATO TECH Co., Ltd.

[0093] The dimensions of the outlet forming part, the ratio of the upper surface to the length in the depth direction or the length in the width direction, the physical properties of the paper towel, and the test results for each example are shown in Tables 1 and 2 below.

[0094] Furthermore, in Table 1, the width of the narrow section / the maximum length in the depth direction of the outlet forming section is represented by [D] / [A], the width of the outlet forming section / the width of the bulging protrusion is represented by [B] / [E], and the width of the narrow section / the width of the bulging protrusion is represented by [D] / [E].

[0095] [Table 1]

[0096]

[0097] [Table 2]

[0098]

[0099] According to Tables 1 and 2, firstly, in the existing example 3 where the outlet forming part is a perforated line and the outlet is a slit, even with a 2-ply soft tissue, the number of times it fell in was confirmed to be 15.

[0100] In addition, for the existing Example 2, which has a shorter length in the depth direction and a longer length in the width direction, the hygiene impression is excellent because the length in the depth direction is shorter. However, the first sheet is worse than the example, especially in terms of opening. The edge of the opening is very difficult to pinch, and all the test subjects had difficulty opening it, so it was rated as 1 point.

[0101] Furthermore, in the existing product 1 with two layers, the depth is longer than in the embodiment, resulting in a poorer impression in terms of hygiene. Additionally, the width is shorter than in the embodiment, but the number of times the product falls in is greater.

[0102] Based on these results, this embodiment is an improvement over existing examples.

[0103] Next, in the embodiments of the present invention, the first sheet was rated as slightly easy to remove, and its opening performance was rated as excellent. Furthermore, the number of times it fell in was 1, which was the minimum in all examples.

[0104] In contrast, in Comparative Example 1, although the length of the depth direction of the dispensing port forming section was longer than that of the Example, the evaluation was lower. If the length in the depth direction is increased due to the narrower width direction, a wider area of ​​the tissue paper will try to come out of the dispensing port and accumulate when it is pulled out. However, since the rigidity of the 3-ply tissue paper is higher than that of the 2-ply tissue paper, if it is too long and exceeds the appropriate length, it will interact with the width direction and cause blockage, thereby deteriorating the dispensing performance.

[0105] Furthermore, regarding Examples 1 to 4, the embodiments of the present invention yielded satisfactory results in terms of the first sheet's removability, number of drops, and opening properties. In particular, the opening properties were also excellent in Examples 1 and 2.

[0106] As described above, the film-packaged tissue paper of the present invention gives the impression that foreign objects are difficult to mix in and can be used hygienically. Moreover, it has excellent opening properties, and even each set of high-quality and rigid tissue paper with 3 or more layers is easy to remove.

[0107] Label Explanation

[0108] 1: Film-packaged tissue paper; 2: Tissue paper; 2A: Folded-back inner side; 2B: Folded-back sheet; 2C: Folded-back edge; 3: Tissue paper bundle; 3A: Short side; 3B: Long side; 3C: Upper and lower surfaces of the bundle; 4: Packaging film; 4A: End surface; 4B: Long side; 4C: Upper surface; 4D: Lower surface; 4X: Overlapping portion of packaging film; 4Y: Extended portion of packaging film; 4Z: Tube opening of packaging film; 5: Dispensing outlet forming part; 5A, 5B: End in the long side direction; 50: Tear line; 50C: Cutting part; 50U: Non-cutting part (connecting part); L1: Width direction of dispensing outlet forming part 5 (long side direction) L1: Length in the width direction (long side direction) of the upper surface of the film-packaged tissue paper; L2: Length in the depth direction (short side direction) of the dispensing outlet forming portion 5; L3: Length in the depth direction (short side direction) of the upper surface of the film-packaged tissue paper; L4: Length in the depth direction (short side direction) of the upper surface of the film-packaged tissue paper; L5: Length in the depth direction (short side direction) of the narrow portion; L6: Length in the depth direction of the narrow portion; L7: The range from the middle of the widening portion 52A on one side of the depth direction to the position beyond the outer end 53t of the protrusion 53; L8: Width of the bulging protrusion; 51: Narrow portion; 51A: Near the edge of the narrow portion; 52: Widening portion; 53: Curved portion.

Claims

1. A film-packaged tissue paper, characterized in that, The film-packaged tissues are tissues wrapped in a soft resin-based packaging film. The paper towel has a base weight of 12.5g / m² per layer. 2 ~22.5g / m 2 Furthermore, the paper towels are 3- or 4-ply, with a paper thickness of 185μm to 285μm. The film-packaged tissue has a dispensing opening on its upper surface. The extraction port forming portion is formed by arranging easily ruptured lines, which are alternately arranged with cutting portions and non-cutting portions, in a ring shape. The extraction port forming portion is an elongated shape that extends from the center of the depth direction along the width direction on the upper surface and protrudes outward at both ends. The length of the outlet forming portion in the width direction is 60% to 75% of the width of the upper surface, and the maximum length of the outlet forming portion in the depth direction is 6% to 15% of the length of the upper surface in the depth direction. The B value of the packaging film on the upper surface, measured by the KES-FB2-S bending tester, is 0.093 gf × cm. 2 / cm or less, 2HB value is 0.033gf×cm / cm or less. The paper towel's B value, measured by the KES-FB2-S bending tester, is 0.010 gf × cm. 2 / cm~0.022gf×cm 2 / cm, 2HB value is 0.012gf×cm / cm~0.029gf×cm / cm.

2. The film-packaged tissue paper according to claim 1, wherein, The outlet forming portion has the following shape: a narrow portion that extends along the long side at the center in the width direction; a widening portion that communicates with the end of the narrow portion and gradually widens as it moves away from the narrow portion in the width direction; and a protrusion that is continuous with the widening portion and bulges outward in the width direction.

3. The film-packaged tissue paper according to claim 2, wherein, The length of the narrow portion in the width direction is 35% to 65% of the length of the upper surface, and the length of the narrow portion in the depth direction is 3% to 7% of the length of the upper surface in the depth direction.

4. The film-packaged tissue paper according to claim 2, wherein, At least one end of the exit forming portion is a cut portion that extends from the middle of the widened portion on one side in the depth direction to a position beyond the outer end of the protrusion.

5. The film-packaged tissue paper according to claim 1, wherein, Regarding the outlet forming portion, the configuration of the cutting portion and the non-cutting portion at each end in the width direction is different, and a cutting portion is positioned at the outer end of at least one end.

6. The film-packaged tissue paper according to claim 1, wherein, Film-packaged tissues are made by overlapping and packaging a bundle of tissues that are folded and stacked into a roughly rectangular shape. The end surface formed by the sealing part of the tube opening is located facing the short side of the bundle, and the adhesive part formed by the overlapping and bonding of the packaging film is located facing one long side.

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