Packaging body

Abstract

The present invention provides a package of a film package of sanitary tissue paper, which is excellent in the ease of taking out. The present invention is solved by a package of a bundle of sanitary tissue paper, which is packaged with a package film made of a soft resin, wherein the package has a take-out port forming portion, which is formed by arranging a breakable line in a ring shape on an upper surface, and the take-out port forming portion has a shape having a narrow portion extending in a width direction at a central portion in a depth direction, a widening portion continuously with an end portion of the narrow portion and gradually widening as moving away from the narrow portion toward an outer side in the width direction, and a curved convex portion continuously with the widening portion and bulging convexly toward the outer side in the width direction, a length of the take-out port forming portion in the width direction is 70% or more of a length of the upper surface in the width direction, a maximum length of the take-out port forming portion in the depth direction is 10% to 40% of a length of the upper surface in the depth direction, a length of the narrow portion in the width direction is 50% to 70% of the length of the upper surface in the width direction, and a length of the narrow portion in the depth direction is 0.5% to 10% of the length of the upper surface in the depth direction.

Description

Technical Field

[0001] This invention relates to a package body made of a bundle wrapped with a soft packaging film, the bundle being formed by folding and stacking tissue paper such as paper towels. Background Technology

[0002] As a packaging form for tissues, facial tissues, and other sanitary tissues, the following forms are known: one or more sheets are folded and stacked to form a so-called pop-up bundle in which a portion of the next sheet is pulled out when the top sheet is pinched and pulled out, and the bundle is packaged using a soft packaging film made of resin.

[0003] Previously, the packaging of such tissues typically used simple, straight perforations to create the dispensing opening, with a slit-like opening on the top surface. However, this slit-like opening had the following problems: if the slit length was increased, fewer sheets would remain inside, causing them to fall further in; conversely, if the slit length was shortened, it was difficult to pull a sheet out of the film initially after opening; furthermore, the resistance to pulling out became too high during the initial or later stages of use, causing the sheet to be lifted along with the packaging film and unable to pop out.

[0004] Therefore, in order to improve the problem of the slit-shaped outlet, the perforation line used to form the outlet is configured into a long, thin ring extending along the length direction by a die-casting technique such as punching, so that the opening of the outlet becomes a wider opening with a width in the depth direction (Patent Documents 1 and 2 below). In addition, in order to further improve the removability, the outlet is also made into a gourd shape by widening the end in the width direction.

[0005] However, the previous roughly oval or gourd-shaped dispensing spouts were designed primarily for facial tissues, which are mainly used for facial applications such as blowing the nose or wiping around the mouth during meals. They may not be suitable for tissues that are "thick, sturdy, and not easily torn," which are easy to use for wiping skin other than the face or wiping objects, or for tissues that are more rigid than facial tissues and are mainly used for drying hands after washing.

[0006] To ensure good removability of such tissue paper, it is advisable to make the dispensing opening wider in the depth direction. However, due to the different paper quality, tissue paper with high rigidity is difficult to design in the same way as facial tissue with excellent softness or suppleness. If the depth direction of the dispensing opening is only set to be wide, it is very easy to produce the following problems in removability: poor ejection, where the next tissue paper falls in without being pulled when ejected; or poor standing up, where the tissue paper lies flat on the top surface of the packaging instead of standing up.

[0007] Existing technical documents

[0008] Patent documents

[0009] Patent Document 1: Japanese Patent Application Publication No. 2018-052559

[0010] Patent Document 2: Japanese Patent Application Publication No. 2018-058654 Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] Therefore, the main objective of this invention is to provide a packaging material with excellent pull-out properties for tissue paper, particularly stiff tissue paper such as paper towels, in view of the above-mentioned problems.

[0013] Methods for solving problems

[0014] The methods used to solve the above problems are as follows.

[0015] The first method is a film-packaged tissue, wherein the film-packaged tissue is made by wrapping a bundle of tissue paper in a soft resin-based packaging film, characterized in that...

[0016] The packaging body has an opening formed on its upper surface by a ring-shaped arrangement of easily tearable lines.

[0017] The outlet forming section has the following shape:

[0018] The narrow portion extends along the width direction from its central portion in the depth direction; the widening portion is continuous with the end of the narrow portion and gradually widens as it moves away from the narrow portion in the width direction; and the curved protrusion is continuous with the widening portion and bulges outward in the width direction.

[0019] The length of the outlet forming portion in the width direction is more than 70% of the length of the upper surface in the width direction, and the maximum length of the outlet forming portion in the depth direction is 10% to 40% of the length of the upper surface in the depth direction. The length of the narrow portion in the width direction is 50% to 70% of the length of the upper surface in the width direction, and the length of the narrow portion in the depth direction is 0.5% to 10% of the length of the upper surface in the depth direction.

[0020] The second method is a film-packaged tissue paper of the first method described above, wherein the length of the curved protrusion in the depth direction is 25mm to 45mm, and the bulging length in the width direction is 2mm to 12.5mm.

[0021] The effects of the invention

[0022] According to the present invention, a packaging body with excellent pull-out properties can be provided for tissue paper, especially stiff tissue paper such as paper towels. Attached Figure Description

[0023] Figure 1 This is a perspective view illustrating the packaging of the present invention.

[0024] Figure 2 It is a three-dimensional diagram used to illustrate a bundle of sanitary tissue paper.

[0025] Figure 3 This is a top view used to illustrate the outlet forming section.

[0026] Figure 4 This is a perspective view illustrating how the packaging body of the present invention is used.

[0027] Figure 5 This is a partially enlarged view used to illustrate the take-out forming section with deformable cutting portion.

[0028] Figure 6 This is a partially enlarged view used to illustrate other take-off openings with deformable cutting sections.

[0029] Figure 7 This is a partially enlarged view used to illustrate the outlet forming section with a convex cut.

[0030] Figure 8 This is a magnified view used to illustrate other ways of depicting a convex cut.

[0031] Figure 9 This is a perspective view illustrating the usage of a packaging body with a convex cutout forming part.

[0032] Figure 10 This is a partially enlarged view used to illustrate the take-out forming section with a semi-cut portion.

[0033] Figure 11 These are the front view and sectional view used to illustrate the half-cut section.

[0034] Figure 12 This is a diagram used to illustrate other examples of how the outlet formation section can be formed.

[0035] Figure 13 This diagram illustrates the tearing that occurs during the formation of the outlet. Detailed Implementation

[0036] The following is for reference Figures 1-12 And showing the comparison method Figure 13The following describes the embodiments of the present invention. It should be noted that the directions such as up / down and left / right in the present invention and this specification change depending on the orientation of the packaging body, and do not imply absolute spatial directions. Additionally, rigidity is sometimes referred to as the hardness, stiffness, or strength of paper.

[0037] The packaging body 1 of the present invention is formed by wrapping a bundle 3 of tissue paper or other sanitary tissues 2, which is folded and overlapped, in a generally rectangular shape using a flexible packaging film 4. It has an opening 5 on its upper surface 4C. The packaging body 1 is approximately hexahedral in shape, approximating the bundle 3, and has an upper surface 4C, a lower surface 4D facing the upper surface 4C, and a long side surface 4B and a short side surface 4A located between the upper surface 4C and the lower surface 4D.

[0038] Figures 1-4 An embodiment of the corner-supported packaging is shown. This embodiment of the corner-supported packaging is a pillow-type packaging with side panels. The bundle 3, which is to be packaged, is rolled into a cylindrical shape by a packaging film 4, with openings at both ends along its long side. The overlapping portion 4X in its winding direction is bonded at the bottom surface of the bundle 3, etc., by welding or adhesive. Furthermore, a side panel is formed at the end edge of the portion extending beyond the short side panel 3A of the bundle 3 and bonded from top to bottom by welding or adhesive, with the short side panel 4A serving as the sealing surface. In this corner-supported packaging, the sealing surface 4A faces the short side panel 3A of the bundle 3, and the long side panel 4B faces the folded-back surface, i.e., the long side panel 3B, of the bundle 3. However, in this invention, the packaging form of the packaging body 1 is not limited. It can also be a simple pillow-type packaging without side panels, or other suitable packaging forms such as overlapping and welding of flaps to form the short side panel, also known as caramel packaging.

[0039] The bundle 3 of sanitary tissue paper 2 enclosed in the packaging body 1 of the present invention is a so-called pop-out bundle. Specifically, as... Figure 2 As shown, the bundle 3 is formed in a generally cuboid shape as follows: multiple sheets of toilet paper 2 are folded and stacked in such a way that the square toilet paper 2 is folded in half and the folded-back sheet 2B of the other toilet paper 2 located above and below is located on the inside fold 2A of the folded toilet paper 2. Thus, the bundle 3 has a pair of long side surfaces 3B arranged with the folded-back edges 2C of each toilet paper 2, and a pair of short side surfaces 3A not arranged with the folded-back edges 2C, and also has a pair of planes (top and bottom surfaces) 3C connected to the short side surfaces 3A and the long side surfaces 3B.

[0040] The number of sets of tissue paper 2 constituting the bundle 3 is not limited; one or more layers can be grouped into 30 to 240 sets. The size of the bundle 3 is also not limited, but preferably, 200 sets of tissue paper are bundled together, with a height of 30-100 mm × width along the long side × depth of 100-130 mm. Furthermore, when the height of the bundle is shorter than the length of the upper surface of the bundle in the depth direction, the improvement effect of the present invention on poor ejection is further enhanced.

[0041] The filling rate of the bundle 3 within the packaging body 1 is not limited as long as it does not impair the effects of the present invention. Preferably, the gap between the bundle and the packaging film is in the range of 0 to 30 mm. The bundle 3 can also be packaged in a slightly compressed state in the vertical direction through the packaging film.

[0042] Each sheet of tissue paper 2 constituting the paper bundle 3 is a single-layer structure of a single sheet or a stacked structure of multiple sheets overlapping each other. The number of layers is not limited, but is preferably one sheet (1 layer) or two sheets overlapping each other (2 layers). The basis weight of each layer is not limited, but is preferably 10–40 g / m². 2 The weight of each set is preferably 1.0 to 2.5 g. Toilet tissues made of one or two layers of sheet material with the above-mentioned basis weight are particularly suitable for use as hand towels after washing hands. Furthermore, the thickness of each set of these toilet tissues is preferably 100 to 500 μm. Toilet tissues with such a number of layers, basis weight, and paper thickness, based on the shape of the dispensing opening forming portion, which is characteristic of the structure of the present invention and has a narrow portion, a widened portion, and a curved protrusion, are highly effective in improving ejection defects such as the next sheet of toilet tissue falling in before being lifted during ejection, and standing defects such as the sheet falling over instead of standing upright on the surface of the packaging.

[0043] Furthermore, the basis weight was measured based on the measurement method of JIS P 8124 (1998). The basis weight of each layer can be calculated by basis weight = weight of each sheet / (sheet area × number of layers). In addition, the paper thickness was measured under the same conditions using a dial-type thickness gauge "PEACOCKG type" (manufactured by Ozaki Corporation) and equivalent equipment, after the test sheet was fully conditioned under the conditions of JIS P8111 (1998), in a multi-layer condition.

[0044] Furthermore, the tissue paper 2 of the present invention is a dry paper, not a so-called wet paper impregnated with a medicinal solution. Therefore, the paper bundle 3 formed from the tissue paper 2 contains a large amount of air. Among this dry tissue paper 2, there are also medicinal solution-imparted tissue papers, which are infused with a medicinal solution that enhances moisture by absorbing moisture through polyols such as glycerin, but such tissue papers are also possible.

[0045] The raw material pulp constituting the tissue paper 2 is not limited. Examples include pulps derived from coniferous trees, such as NBKP, and pulps derived from broadleaf trees, such as LBKP. Alternatively, it can be blended with waste paper pulp, or it can be composed solely of waste paper pulp. In this invention, to exhibit particularly excellent effects in tissue paper with high hardness and rigidity, such as paper towels, it is particularly preferable that the pulp derived from coniferous trees exceeds 50%.

[0046] The dry tensile strength of the tissue paper 2 is not limited, but tissue paper with a dry tensile strength of 1000–3000 cN / 25 mm in the longitudinal direction and 250–1500 cN / 25 mm in the transverse direction is particularly suitable for this invention. The method for measuring the dry tensile strength is carried out according to JIS P8113 (1998). As a measuring device, the "Universal Tensile and Compression Testing Machine TG-200N" manufactured by Minebea Co., Ltd. and equivalent equipment can be cited.

[0047] The dispensing opening 5 of the packaging body 1 of the present invention is formed by arranging a tear-resistant line 50 in a ring on the upper surface 4C of the packaging film 4 facing the uppermost tissue paper 2 of the bundle 3. Furthermore, the ring shape in this specification is not limited to a circular or elliptical shape, but refers to the shape of a closed area. This dispensing opening 5 causes the tear-resistant line 50 to break, separating and removing the area enclosed by the tear-resistant line 50, thereby forming an opening, i.e., a dispensing opening 6, on the upper surface 4C of the packaging body 1 for dispensing the tissue paper 2. In the packaging body 1 of the present invention, since the bundle 3 is pop-out type, when the uppermost tissue paper 2 of the bundle 3 is withdrawn from the formed dispensing opening, a portion of the next tissue paper directly below it is exposed from the dispensing opening. Furthermore, in this dispensing opening 5, since the tear-resistant line 50 is arranged in a ring shape, the dispensing opening 6 formed by separating and removing the area enclosed by the tear-resistant line 50 is not merely a straight slit shape, but has a certain width in the depth direction. Regarding the dispensing port forming portion 5, by cutting and peeling off the area surrounded by the easily ruptured line 50 in a continuous stretching manner from one end 5A to the other end 5B, the film within the dispensing port forming portion 5 can be separated and removed, thus providing excellent operability during opening. Furthermore, in this specification, the end located on the left side of the accompanying drawings is described as one end 5A and the end located on the right side as the other end 5B, but this is only for ease of explanation and can be switched.

[0048] Here, the outlet forming portion 5 of the packaging body 1 of the present invention is characterized by having: a narrow portion 51 that extends in the width direction at the center of the depth direction of the upper surface 4C; a widening portion 52 that is continuous with the end of the narrow portion 51 and gradually widens away from the narrow portion 51 toward the outer side of the width direction of the bundle 3; and a curved protrusion 53 that is continuous with the widening portion 52 and bulges outward toward the outer side of the width direction of the bundle 3. Moreover, in particular, the length L1 of the entire outlet forming portion 5 in the width direction is more than 70% of the length L2 of the upper surface of the bundle 3 in the width direction, the maximum length L3 of the entire outlet forming portion 5 in the depth direction is 10 to 40% of the length L4 of the upper surface of the bundle 3 in the depth direction, the length L5 of the narrow portion in the width direction is 50 to 70% of the length L2 of the upper surface of the bundle 3 in the width direction, and the length L6 of the narrow portion in the depth direction is 0.5 to 10% of the length L4 of the upper surface of the bundle 3 in the depth direction.

[0049] Regarding the outlet 6 formed by the outlet forming section 5, the free edge piece 51A, which is roughly trapezoidal and easily moves in the vertical direction near the edge from the narrow section 51 to the widened section 52, deforms slightly in the direction of extraction when a set of tissue paper 2 is pulled out of the bundle 3, especially as... Figure 4 As shown, it is supported against and against the next exposed set of tissue paper 2. Furthermore, in the dispensing opening forming portion 5 of the present invention within the aforementioned scope, particularly due to its shape having a continuous widening portion 52 extending from a very narrow width portion 51 in the depth direction to a very wide curved protrusion 53 in the depth direction, the free edge piece 51A formed near the edge of the narrow width portion 51 in the formed dispensing opening 6 is very wide and large. Therefore, when the tissue paper 2 is pulled out, the narrow width portions 51 can open more widely, allowing for smooth removal of the relatively rigid tissue paper 2 from the bundle 3. Additionally, even for the highly rigid tissue paper 2, the edge piece 51A can reliably rest against it, thereby improving the effect of preventing it from falling in. Because the narrow section 51 opens relatively wide, in particular, even in packaging forms such as gusseted or pillow-type packaging, where it is difficult to form a clear fold line at the boundary between the short side 4A and the upper surface 4C, and where the packaging film at the upper surface of the packaging body 1 is prone to deformation, or even if the inner tissue paper is a tissue paper 2 with high rigidity such as the aforementioned weight and thickness, and the upper surface of the packaging body 1 is prone to deformation when pulled out, the upper surface is not prone to tilting when the tissue paper 2 is pulled out and is easy to maintain as a flat surface, making it particularly easy to remove the tissue paper 2 stably when taking it out one sheet at a time.

[0050] Furthermore, in the dispensing port forming portion 5 of the structure of the present invention, since the curved protrusion 53 is wider in the depth direction, the length of the edge of the curved protrusion 53 is longer, and the widened portion 52 of the dispensing port forming portion 5 and the curved protrusion 53 form a shape that creates a deep recess 6H when serving as the dispensing port 6. Therefore, the root portion 2R of the next piece of tissue paper, which is continuous with the tissue paper pulled from the bundle 3 and partially exposed from the dispensing port 6, deforms by gently rolling it up along the edge 6E of the curved protrusion 53. In the case of the tissue paper 2 with high rigidity, since it is difficult to bend it rigidly, the uprightness is improved by gently rolling it up. Furthermore, since the root portion 2R of the next piece of tissue paper exposed from the dispensing port 6 is also embedded in the deeper recess 6H, the uprightness is further improved. Thus, in the dispensing port forming portion 5 of the present invention, the ejection defect caused by the tissue paper falling into the packaging film, which is prone to occur when the rigidity of the tissue paper is high, is difficult to occur due to the above-mentioned effects. It should be noted that this effect is particularly effective in combination with the preferred weight and thickness of sanitary tissue paper described above, and the preferred packaging film described later.

[0051] Regarding the widening portion 52, it is particularly preferred that the easily breakable line 50 that forms the edge of the widening portion 52 is arranged such that the angle gradually increases relative to the width direction outwards in the width direction of the bundle 3. Furthermore, the angle between the line connecting the two ends of the easily breakable line 50 that forms the edge of the widening portion 52 and the width direction, i.e., the cone angle ∠α, is preferably 25 degrees to 60 degrees.

[0052] Furthermore, preferably, the easily crackable line 50 is formed as a curve and smoothly connected from the widened portion 52 to the curved protrusion 53. When the easily crackable line 50 is configured in this way, the easily crackable line 50 can easily and smoothly crack from the widened portion 52 toward the curved protrusion 53.

[0053] In addition, the length L3 in the depth direction of the curved protrusion 53 is preferably 25mm to 45mm, and the bulging length L7 in the width direction is preferably 2.5mm to 12.5mm.

[0054] On the other hand, specific examples of the flexible resin-based packaging film 4 constituting the outer packaging of the packaging body 1 include polyethylene film, polypropylene film, polyester film, polyethylene terephthalate film, nylon film, vinylidene chloride film, single-layer film of ethylene-vinyl alcohol copolymer, or laminated film comprising suitable layers of these films, or gas-barrier film on which these films have undergone surface treatment such as aluminum vapor deposition. Alternatively, biomass films from plant materials such as sugarcane, potato (starch), and corn can also be used. From an environmental protection point of view, the use of such biomass films is preferred.

[0055] Polypropylene film and polyethylene film are particularly preferred. Alternatively, packaging film 4 can also be a pear-skin mask with a unique design and excellent feel. The melting point of the film is preferably below 150°C. It should be noted that the lower the melting point of the packaging film, the better it can be heat-sealed at low temperatures, but the practical lower limit is 80°C. Examples of polypropylene films include unstretched polypropylene film (CPP), and examples of polyethylene films include linear low-density polyethylene film (LLDPE), low-density polyethylene film (LDPE), and medium-density polyethylene film (MDPE).

[0056] Furthermore, if packaging is being done for scented tissues or other odorous substances, ethylene-vinyl alcohol copolymer resin films or polyethylene terephthalate resin films with excellent fragrance retention are preferred. Alternatively, multilayer resin films with improved heat-sealing properties can be created by laminating polyethylene resin or polypropylene resin onto one or both sides of an ethylene-vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film.

[0057] Here, the thickness of the packaging film 4 can be appropriately selected, but preferably, the thickness measured according to JIS P 8118 (1998) is 25 to 75 μm. If the thickness is 25 μm to 75 μm, the effects of the present invention can be particularly effectively demonstrated. The thickness is measured by fully conditioned the test sample under the conditions of JIS P 8111 (1998) using a dial-type thickness gauge (thickness measuring instrument) "PEACOCK G-1 A type" (manufactured by Ozaki Corporation) and equivalent equipment.

[0058] Furthermore, regarding the packaging body 1, it is preferable that the softness of the packaging film 4 is less than that of the tissue paper 2. When the softness of the packaging film 4 is less than that of the tissue paper 2, the effects of the present invention can be particularly effectively demonstrated.

[0059] The easily breakable line 50 constituting the outlet forming portion 5 of the present invention can be a perforated line, a slit with an uncut portion (non-cut portion), etc. However, it is not limited to this. As long as the perforated line is formed by alternating arrangements of cut portions 50C and non-cut portions 50U, its type is not limited. Examples include a general perforated line where the cut portion 50C is a straight line, a micro-perforated line where the cut portion is a hole, and a zipper perforated line where the cut portion is Y-shaped, approximately L-shaped, <-shaped, etc. A slit is a portion in which the film is cut into a slit shape, but by having a non-cut portion, the non-cut portion and the cut portion are arranged alternately. In addition, sometimes a slit with a non-cut portion is simply referred to as a slit. Perforated lines and slits with non-cut portions are sometimes not distinguished, but in the present invention, a slit is called a slit when the cut portion is less than two intervals, that is, when cut portions of the same length are not consecutive. Generally speaking, the length of the cut portion of the slit is longer than that of the perforated line.

[0060] Regarding the cutting connection ratio of the perforated line or the cut with a non-cutting part, the appropriate interval is determined according to the ease of breakage of the membrane used. However, the length of the cutting part can be appropriately designed from a range of 0.8 mm to 20.0 mm, and the length of the non-cutting part (connecting part or uncut part) can be appropriately designed from a range of 0.3 mm to 5.0 mm.

[0061] Here, as Figure 13 As shown in (a), the exit forming portion 105, formed by arranging the perforated lines 150 in a ring shape using a die-cutting technique, has the following advantages: [The text abruptly ends here, suggesting an incomplete sentence or a missing section.] Figure 13 As in (b), the annular perforated line inner range 105Z is cut and peeled off from one end 105A in the length direction X toward the other end 105B, thereby easily forming an opening. On the other hand, when such an opening operation is performed, at the other end 105B, as the perforated line 150e approaches the last cut end, the direction in which the perforated line 150 breaks is approximately perpendicular to the direction in which the annular perforated line inner range 105Z is stretched. Therefore, as Figure 13 As shown in (c), it can be considered that: near the perforation line 150e at this end, particularly at the other end 105B, the breaking of the perforation line 150 cannot proceed smoothly and continuously, thus as Figure 13 As shown in (d), an unexpected tear 105P occurs at the end of the outlet 106. Furthermore, as the end of the outlet forming portion 105 in the width direction widens in the depth direction Y, the range of the perforation line approaching in the direction orthogonal to the cutting and peeling direction becomes longer, so it is conceivable that this tear is prone to occur.

[0062] To reduce the risk of such tearing, in particular, as shown in the outlet forming portion 5 of the present invention... Figure 5 and Figure 6 As shown, the portion 50P that forms the edge of at least one end (the other end 5B in the example) in the width direction of the outlet forming portion 5 can be configured with characteristic perforation lines 50P alternately arranged with deformable cutting portions 50D and non-cutting portions 50U. 1 The deformable cutting portion 50D has an end cutting portion 50e, and has one or both ends cut into a "U" shape. Particularly preferred is that 80% or more, preferably 90% or more, and particularly preferably 95% or more of the portion constituting the edge of the curved protrusion 53 is set as the portion 50P described above, which alternately has deformable cutting portions 50D and non-cutting portions 50U. The entire range of the curved protrusion 53 may also be composed of easily cracking lines alternately arranged with deformable cutting portions 50D and non-cutting portions 50U.

[0063] More specifically, especially as Figure 5 and Figure 6 As shown, the deformable cutting portion 50D is formed in the following shape: at one or both ends of the main cutting portion 50m on a straight or roughly straight gently curved line, end cutting portions 50e are continuously arranged at a predetermined angle, and one or both ends of the deformable cutting portion 50D have portions cut into a "く" shape. Figure 5 As shown, the deformable cutting portion 50D can be a deformable cutting portion 50D with only one end formed in the shape of a U. 1 Or, a deformed cut section 50D with both ends formed in the shape of a "く" (ku). 2 .like Figure 6 As shown in (c), the deformed cut section 50D can also be as follows. 3 One end of the end-cutting portion 50e faces outward in the width direction of the upper surface of the bundle 3, and the other end of the end-cutting portion 50e faces the center side in the width direction of the upper surface of the bundle 3.

[0064] Furthermore, the portion 50P, which alternately comprises the deformable cutting portion 50D and the non-cutting portion 50U, is also described. 1 The arrangement of the deformable cutting parts 50D in the middle can be as follows: Figure 5 and Figure 6 As shown in (a), only deformable cut portions 50D with the ends of the end-cut portions 50e facing outward in the width direction toward the upper surface of the bundle 3 are arranged, or as shown in (a). Figure 6 As shown in (b), only deformed cut portions 50D with the ends of the end-cut portions 50e facing the center side of the upper surface of the bundle 3 in the width direction are arranged. Furthermore, deformed cut portions 50D with the ends of the end-cut portions 50e facing the outer side of the upper surface of the bundle 3 in the width direction and deformed cut portions 50D with the ends of the end-cut portions 50e facing the center side of the upper surface of the bundle 3 in the width direction may coexist. Moreover, as... Figure 6 As shown in (c), it is also possible that only the ends of the end-cut portions 50e located at both ends of the upper surface of the bundle 3 in the depth direction face outward in the width direction of the upper surface, while the ends of the other end-cut portions 50e face the center side in the width direction of the upper surface.

[0065] During a typical opening operation, where the seal is continuously stretched from one end 5A to the other end 5B of the area surrounded by the easily ruptured line 50, a portion 50P with alternating deformable cutting portions 50D and non-cutting portions 50U is arranged at the end (the other end 5B in the example). 1In the case where adjacent end-cut portions 50e of adjacent deformable cut portions 50D are both directed outward in the width direction of the upper surface of the bundle 3, or both are directed towards the center side in the width direction of the upper surface of the bundle 3, the extending directions of adjacent end-cut portions 50e intersect in a direction of proximity, thus the non-cut portion 50U between them is easily cut off. Furthermore, when one of the adjacent end-cut portions 50e of adjacent deformable cut portions 50D is directed outward in the width direction of the upper surface of the bundle 3 and the other is directed towards the center side in the width direction of the upper surface of the bundle 3, during a typical opening operation involving continuous stretching from one end 5A to the other end 5B of the area surrounded by the easily ruptured line 50, the non-cut portion 50U between them will twist just before being cut, thus it is easily cut off without tearing or stretching of the film. When an end-cut portion 50e exists on one side of an adjacent deformable cut portion 50D and not on the other side, similarly, during a typical opening operation involving continuous stretching from one end 5A to the other end 5B within the area surrounded by the tear-resistant line 50, the non-cut portion 50U between them will twist just before being cut, thus making it easy to cut without tearing or stretching of the film. Thus, by forming a portion 50P at the end in the width direction (the other end 5B in the example figure) alternately arranged with deformable cut portions 50D and non-cut portions 50U, 1 Therefore, the risk of tearing during opening is reduced.

[0066] Furthermore, in the outlet forming section 5 of the present invention, in the portion 50P where the deformable cutting section 50D and the non-cutting section 50U are alternately arranged... 1 In this design, the end of the deformable cutting section 50D is positioned slightly offset from the extension direction of the main cutting section 50m towards the inside or outside of the width direction due to the end cutting section 50e. Therefore, when the dispensing outlet 6 is formed, the portion of the non-cutting section 50U protrudes slightly, forming a serrated edge. Thus, when a set of tissue paper 2 is pulled out from the bundle 3, the serrated edge clamps the width-direction edge of the next set of tissue paper 2 that is continuous with the dispensed tissue paper and partially exposed from the dispensing outlet, improving the prevention of falling in.

[0067] Here, the following method is particularly preferred: Figure 5 As shown, the deformable cutting portion 50D is located on the width extension line of the center C in the depth direction of the narrow portion 51. This deformable cutting portion 50D has end cutting portions 50e at both ends that face outward in the width direction. 2 Furthermore, located 50D above the deformed cut portion 2The deformed cut portion located on the outer side in the depth direction becomes a deformed cut portion 50D with an end cut portion facing outward in the width direction only at the end located on the outer side of the depth direction center C, which is larger than the narrow portion 51. 1 In that Figure 5 In the shown outlet forming section 5, during a typical opening operation where the material is continuously stretched from one end 5A to the other end 5B of the area surrounded by the easily ruptured line 50, the material is cut in the deformation cutting section 50D. 1 The end without an end cut portion has an adjacent deformable cut portion 50D located on the outer side of the width direction, forward in the stretching direction. 1 50D 2 The end-cut portion 50e has a small tear in the packaging film when the non-cut portion 50U between them tears during the opening operation. The tear is likely to continue immediately after the already torn end-cut portion 50e, and the tear is difficult to advance further.

[0068] When a deformable cutting portion 50D is provided at the end of the outlet forming portion 5, the length ratio of the deformable cutting portion 50D to the non-cut portion 50U is not limited. However, while the length L8 of the deformable cutting portion 50D is not limited, it is preferably 5 mm or more and 20 mm or less, more preferably 7 mm or more and 13 mm or less. Furthermore, the length L9 of the end cut portion 50e of the deformable cutting portion 50D is preferably 0.2 mm or more and 3.0 mm or less, preferably 0.5 mm or more and 2.5 mm or less. Moreover, the length L11 of the non-cut portion 50U between the deformable cutting portions 50D is preferably 0.2 mm or more and 3.0 mm or less, preferably 0.3 mm or more and 2.0 mm or less. Within this range, tearing is extremely difficult to occur between the deformable cutting portions 50D, thus the non-cut portion 50U is cut off, and the splitting is more likely to be continuous and smooth.

[0069] Furthermore, the angle ∠β between the main cutting portion 50m and the end cutting portion 50e in the U-shaped section of the deformable cutting portion 50D should be 90° or more. Preferably, it is 100° or more, and more preferably 120° or more. Additionally, it is preferable to chamfer from the main cutting portion 50m to the end cutting portion 50e. In this case, the curvature of the U-shaped portion is not limited, but it is preferably R0.1 to R2.0, more preferably R0.2 to 1.2, and particularly preferably R0.4 to 1.1. With this curvature, the opening of the deformable cutting portion can easily and smoothly proceed from the main cutting portion 50m to the end cutting portion 50e.

[0070] On the other hand, in the outlet forming part 5 of the present invention, in order to reduce concerns about tearing during opening, especially as Figure 7 and Figure 8As shown, the portion 50P, which forms the edge of at least one end (the other end 5B in the example figure) of the outlet forming portion 5 in the width direction, can be configured by alternating a convex cut portion 50T with a tapered outer edge in the width direction and a non-cut portion 50U connected to the base end of the convex cut portion. 2 In particular, a portion 50P comprising more than 80%, preferably more than 90%, and particularly preferably more than 95% of the edge of the curved protrusion 53 can be a portion 50P in which the convex cut portion 50T and the non-cut portion 50U are alternately arranged. 2 The entire range of the curved protrusion 53 can also be formed by easily fractured lines with alternating convex and non-cut portions 50T. Furthermore, although not shown, the convex portion can also be a shape in which multiple convex shapes are connected and continuous at the base end. The number of consecutive convex shapes is not limited, but is preferably around 2 to 5. Additionally, in the portion 50P where the convex and non-cut portions are alternately arranged... 2 It is also possible to have a mixture of: a convex cut with only one convex shape; and a convex cut with a continuous convex shape.

[0071] The shape of the convex cut 50T can be any shape that tapers outwards in the width direction, except... Figure 7 Besides the V-shape with one vertex shown, it can also be set as... Figure 8 The U-shape shown in (a) Figure 8 The shape is trapezoidal as shown in (b). Furthermore, the outer taper in the width direction means that the end of the convex cut portion 50T does not face the depth direction Y or the center side in the width direction. Preferably, the angle ∠γ of the end of the convex cut portion 50T relative to the depth direction Y is 15° or more, preferably 30° or more, and more preferably 45° or more. Furthermore, the opening angle ∠Δ of the end of the convex cut portion 50T is not limited as long as it is less than 180°, but is preferably 15° to 120°, more preferably 20° to 90°, and even more preferably 30° to 60°.

[0072] In the case of a sealing operation in which the easily tearable line 50 is torn and continuously stretched from one end 5A toward the other end 5B, at the edge of the other end 5B having the convex cut portion 50T, there is a cut convex cut portion 50T located on the outer side of the width direction, which is further forward in the stretching direction than the non-cut portion 50U located between the base ends of the convex cut portion 50T. Therefore, during this sealing operation, when the non-cut portion 50U located between the base ends of the convex cut portion 50T tears, even if a small tear occurs in the packaging film, the tear will not immediately continue to advance from the torn convex cut portion 50T. In this way, by forming a portion 50P at the end in the width direction (the other end 5B in the example) where the convex cut portion 50T and the non-cut portion 50U connecting the base ends of the convex cut portion are alternately arranged, the possibility of tearing is particularly small.

[0073] In addition, such as Figure 9 As shown, portion 50P is formed by alternating arrangements of a tapered convex portion 50T that tapers outward in the width direction and a non-cutting portion 50U that connects the base ends of the convex portion 50T. 2 The dispensing outlet 6 is formed by a series of zigzag-shaped protrusions 6T arranged in a zigzag pattern. When a set of tissue paper 2 is drawn from the paper bundle 3, these protrusions 6T roll up in the dispensing direction of the tissue paper, so that the tissue paper is wound along the edge 6E of the dispensing outlet 6, which is a portion of the curved protrusion 53, without hindering deformation into a shape with high uprightness. In addition, the tissue paper can be drawn out smoothly. On the other hand, the root portion 2R of the next set of tissue paper 2, which is continuous with the drawn tissue paper and partially exposed from the dispensing outlet, functions as a return portion, which helps to prevent it from falling in. Moreover, the width-direction edge of the tissue paper 2 is held between the protrusions, further improving the performance of preventing it from falling in.

[0074] The height L12 of the protruding cut portion 50T from the base end to the end end is preferably 0.1 mm or more. The upper limit is not necessarily limited, but it is preferably within a range not exceeding 10 mm. The preferred height of the protruding cut portion is 0.5 to 7 mm, more preferably 1 to 5 mm. A case where the height of the protruding cut portion is less than 1.0 mm is also referred to as microwave cutoff, etc., and can be achieved through technical means. If the protruding cut portion 50T is configured with such a low height, the serrated edge of the extraction port 6 formed by the portion consisting of the alternating arrangement of the protruding cut portion 50T and the non-cut portion 50U connecting the base ends of the protruding cut portion has an inconspicuous appearance design.

[0075] The ratio of the length L13 between the two base ends of the convex cut portion 50T to the length L14 of the non-cut portion 50U located between the base ends of adjacent convex cut portions 50T is not necessarily limited. However, the length L13 between the two base ends of the convex cut portion 50T can be 5 mm or more and 20 mm or less, preferably 7 mm or more and 13 mm or less. The length L14 of the non-cut portion 50U can be in the range of 0.3 mm or more and 3 mm or less, preferably 0.7 mm or more and 1.3 mm or less. If it is within this range, unexpected tearing will not occur, and continuous tearing can be easily and smoothly achieved.

[0076] On the other hand, in the outlet forming part 5 of the present invention, in order to reduce concerns about tearing during opening, especially as Figure 10 and Figure 11 As shown, the portion 50P that forms the edge of at least one end (the other end 5B in the example) in the width direction of the outlet forming portion 5 can be configured as a portion 50P consisting of alternating cut portions 50C and half-cut portions 50H. 3 In particular, a portion of 80% or more, preferably 90% or more, and especially preferably 95% or more of the portion constituting the edge of the curved protrusion 53 can be a portion 50P in which the cut portion 50C and the half-cut portion 50H are alternately arranged. 3 The entire range of the curved protrusion 53 can also be composed of easily cracked lines arranged alternately with cut portions 50C and half-cut portions 50H.

[0077] Regarding the cutting section 50C and the semi-cutting section 50H, as in Figure 11 A top view is shown in (a), Figure 11 (b) shows Figure 11As shown in section (a), the cut portion 50C is the part that is completely cut off in the thickness direction Z of the packaging film 4 from the side not facing the bundle 3, i.e., the front side 41, to the side facing the bundle 3, i.e., the back side 42. The half-cut portion 50H is the part that is not completely cut off but is cut into a predetermined depth range L15 in the thickness direction Z from the front side 41 to the back side 42. In this way, in the part where the cut portion 50C and the half-cut portion 50H are alternately arranged, compared with the part where the cut portion 50C and the non-cut portion 50U that is not cut into are alternately arranged, when the easy-to-crack line is cracked, the cracking is easier and smoother to advance. This is because, regarding the difference in force required to tear the packaging film 4, the difference between the cut portion 50C and the half-cut portion 50H is smaller than the difference between the cut portion 50C and the non-cut portion 50U. Therefore, the tear can easily and smoothly proceed from the cut portion 50C to the half-cut portion 50H, and from the half-cut portion 50H to the cut portion 50C. Consequently, even when performing an opening operation that involves continuously stretching from one end 5A to the other end 5B in the dispensing section 5, the possibility of the packaging film 4 accidentally tearing at the last cut-off end 5B is relatively small.

[0078] Here, the semi-cut portion 50H preferably cuts to a depth of 20% or more of the thickness L16 of the packaging film. If the cut is 20% or more, a continuous and smooth rupture between the cut portion 50C and the semi-cut portion 50H can be sufficiently generated when the opening operation forms the unpacking port. There is no upper limit to the depth of cut, but if it is 80% or less, more preferably 60% or less, it is difficult for accidental rupture to occur.

[0079] The ratio of the length of the cut portion 50C to the length of the half-cut portion 50H at the end of the outlet forming portion 5 is not limited, but the length of the cut portion 50C can be set to 5 mm or more and 20 mm or less, preferably 7 mm or more and 13 mm or less, and the length of the half-cut portion 50H can be set to 0.3 mm or more and 3 mm or less, preferably 0.7 mm or more and 1.3 mm or less. If it is within this range, the continuous cracking will smoothly advance from the cut portion 50C to the half-cut portion 50H, and from the half-cut portion 50H to the cut portion 50C, and accidental cracking is less likely to occur.

[0080] In addition, in the easily crackable line 50 that forms the edge of the outlet forming portion of the present invention, the cutting portions between deformable cutting portions 50D, between convex cutting portions, and between cutting portions in the perforation line other than the end can be set as half-cut portions.

[0081] On the other hand, in the easily crackable line 50 constituting the edge of the outlet forming part, the portion 50P with alternating deformable cutting portion 50D and non-cutting portion 50U is arranged. 1It can be located at both ends of the outlet forming portion 5, or it can be located at only one end. The portion 50P consists of alternating convex cutting portions 50T and non-cutting portions 50U. 2 It can be located at both ends of the outlet forming section 5, or it can be located at only one end. The portion 50P is composed of alternating cutting sections 50C and half-cutting sections 50H. 3 It can be located at both ends of the outlet forming section 5, or it can be located at only one end. Here, if such an end 50P is made... 1 50P 2 50P 3 If it is formed only at one end, then at the opposite end, for example, Figure 12 As shown in (a), the range L10 from the middle of the widened portion 52A on one side in the depth direction to the position beyond the outer end 53t of the curved protrusion 53A can be set as a continuous cut portion. Thus, as... Figure 12 As shown in (b), at one end 5A of the outlet forming part 5, a free sheet 5T is formed in the range including the outer end from one side of the depth. The free sheet 5T can be easily pinched and rolled up, thereby making the opening operation easier.

[0082] Furthermore, regarding the edge of the narrow portion 51 of the present invention, since its extending direction is consistent with the stretching direction during the opening operation from one end 5A to the other end 5B, it is preferably constructed with a perforated line having a non-cut portion rather than a semi-cut portion. This is preferred because the edge of the narrow portion 51 is less likely to accidentally split.

[0083] Alternatively, regarding the easily cracked line 50, it could also be a perforated line and a cut with a non-cut portion that includes alternating portions of cut portion 50C and half-cut portion 50H, for example, formed in one step by punching.

[0084] Example

[0085] Next, Examples 1 to 5 and Comparative Example 1 of the present invention were prepared, and tests were conducted on the drop-in of the sanitary tissue and the tearing of the opening and dispensing port. The shape of the dispensing port forming part of the packaging body in Examples 1 to 5 is as follows: Figures 1-5 The package shown has a roughly gourd-shaped form with a narrow section, a widened section, and a curved protrusion. The opening of the package in Comparative Example 1 is a simple straight perforation line.

[0086] The inner bundle of each example's packaging contains a single layer of paper towels (product name: Rakura Cuckoo Kitchen Paper, basis weight: 20g / m³). 2 The paper (220μm thick) is folded and overlapped into 100 pop-up bundles. Furthermore, the packaging in each example is a gusseted packaging, with the extension direction of the packaging film perpendicular to the width direction of the dispensing opening.

[0087] In the "number of drops" test, the easy-to-break line of the dispensing outlet is broken to form a dispensing outlet, and the operation of sequentially pulling out the bundle of tissues from the dispensing outlet to the last sheet is performed, and the actual number of drops is counted.

[0088] Regarding "openability," the test subject was instructed to open each sample by pinching one end and stretching it towards the other, and to evaluate whether tearing occurred at the other end of the opening. Let N = 10, examples that tore were rated as "present," and examples that did not tear were rated as "absent."

[0089] The dimensions of the outlet forming portion, the length of the upper surface of the bundle in the depth direction or the ratio of the length in the width direction, and the test results in each example are shown in Table 1 below.

[0090] [Table 1]

[0091]

[0092] According to Table 1, regarding the number of drops, in Comparative Example 1, where the outlet forming portion has a single perforated line and the outlet is a slit, 12 drops were confirmed. In contrast, in Examples 1 to 5, the number of drops was 0, and no drops were confirmed. That is, in particular, the outlet formed based on the shape of the outlet forming portion having a narrow portion, a widened portion, and a curved protrusion exhibits excellent drop-proof performance.

[0093] In addition, in Embodiments 1 to 4, which are structures in which the edge of the end (bent protrusion) is alternately provided with cutting portions and half-cut portions, although the maximum length in the depth direction of the take-out port, that is, the length in the depth direction of the bent protrusion as the end, is as long as 35 mm, which is 30% of the depth direction of the upper surface of the bundle, and is a structure that is easy to tear, no tearing of the end of the take-out port was detected during the opening operation.

[0094] In Example 5, the cutting portions of the curved protrusion in Example 1 were replaced with non-cut portions instead of half-cut portions, but in Example 5, during the opening operation, a local tear was observed at the end of the outlet. In cases where the edge of the curved protrusion, which has a very long length as in Examples 1 to 4, is prone to tearing, if this portion is configured with an alternating arrangement of cutting portions and half-cut portions, the opening operability is also found to be improved.

[0095] Based on the above, the packaging body of the present invention is a film packaging body that provides excellent pull-out properties for tissue paper, especially hard tissue paper.

[0096] Label Explanation

[0097] 1: Packaging body;

[0098] 2: Toilet tissue paper;

[0099] 2A: The inner side of the turnaround;

[0100] 2B: Returning film;

[0101] 2C: Returning edge;

[0102] 2R: The root portion of the sanitary tissue paper exposed from the dispensing port;

[0103] 3: Bundles of toilet paper;

[0104] 3A: Short side;

[0105] 3B: Long side;

[0106] 3C: The upper and lower surfaces of the bundle;

[0107] 4: Packaging film;

[0108] 4A: Short side view;

[0109] 4B: Long side view;

[0110] 4C: Top surface;

[0111] 4D: Lower surface;

[0112] 4X: Overlapping portion of the packaging film;

[0113] 5: Take out the outlet forming part;

[0114] 5A, 5B: Ends along the longer side;

[0115] 5T: Free Film;

[0116] 6: Take out the exit;

[0117] 6E: Take the edge of the exit;

[0118] 6T: Lug;

[0119] 6H: Take the recessed part of the outlet.

[0120] 41: The front side of the packaging film;

[0121] 42: The back side of the packaging film;

[0122] 50: The thread is prone to cracking;

[0123] 50D, 50D 1 50D 2 50D 3 Deformation and cutting section;

[0124] 50m: Main cutting section;

[0125] 50e: End-cut section;

[0126] R: curvature of the く-shaped part;

[0127] 50C: Cutting section;

[0128] 50U: Non-cutting part (connecting part);

[0129] 50T: Convex cut;

[0130] 50P: The edge of the end of the outlet forming part;

[0131] 50P 1 : A section with alternating deformable and non-cutting parts;

[0132] 50P 2 The portion consisting of alternating convex and non-convex portions;

[0133] 50 3 The section where the cutting section and the half-cut section are alternately arranged;

[0134] 51: Narrow section;

[0135] 51A: Roughly trapezoidal shaped rim;

[0136] 52: Widened section;

[0137] 53: Curved protrusion;

[0138] ∠α: The cone angle of the widened portion;

[0139] ∠β: The opening angle of the く-shaped part;

[0140] ∠γ: The angle of the convex shear relative to the depth direction;

[0141] ∠Δ: The angle at the end of the convex shear section.

[0142] L1: The length of the width (long side) of the outlet forming part;

[0143] L2: The length of the upper surface of the bundle in the width direction (long side direction);

[0144] L3: The maximum length of the exit forming section in the depth direction (short side direction);

[0145] L4: Length of the upper surface of the bundle in the depth direction (short side direction);

[0146] L5: Length of the narrow section in the width direction (long side direction);

[0147] L6: Length of the narrow section in the depth direction (short side direction);

[0148] L7: The bulge length in the width direction of the curved protrusion;

[0149] L8: Length of the deformed cut section;

[0150] L9: Length of the end cut section;

[0151] L10: The range from the middle of the widened portion on one side in the depth direction to the position beyond the outer end of the curved protrusion;

[0152] L11: The length of the non-cut portion between the deformed and cut portions;

[0153] L12: Height of the convex cut portion;

[0154] L13: The length between the base ends of the convex cut;

[0155] L14: The length of the non-cut portion between the convex cut portions;

[0156] L15: Depth of the half-cut portion;

[0157] L16: Thickness of the packaging film;

[0158] 105: Take out the outlet forming part;

[0159] 105A: Take one end of the outlet forming section;

[0160] 105B: Take the other end of the outlet forming section;

[0161] 105P: Membrane tear;

[0162] 150: Perforated wire;

[0163] 150e: Perforation line at the end in the width direction;

[0164] X: Long side direction (width direction);

[0165] Y: The direction orthogonal to the long side (depth direction);

[0166] Z: The thickness direction of the packaging film;

[0167] C: The center of the narrow section in the depth direction.

Claims

1. A package in which a bundle of sanitary tissue paper is wrapped with a wrapping film made of a soft resin, characterized in that, the package has an outlet forming portion in which a line of weakness is arranged in a ring shape on an upper surface, the outlet forming portion has a shape having a narrow portion extending in a width direction at a central portion in a depth direction, a widened portion continuous with an end portion of the narrow portion and gradually widened as it moves away from the narrow portion toward an outer side in the width direction, and a curved convex portion continuous with the widened portion and bulging convexly toward the outer side in the width direction, a length of the outlet forming portion in the width direction is 70% or more of a width of the upper surface, a maximum length of the outlet forming portion in the depth direction is 10% to 40% of a length of the upper surface in the depth direction, a length of the narrow portion in the width direction is 50% to 70% of the length of the upper surface, and a length of the narrow portion in the depth direction is 0.5% to 10% of the length of the upper surface in the depth direction, the line of weakness that becomes a rim of the widened portion is arranged so as to gradually increase in angle with respect to the width direction toward the outer side in the width direction of the bundle, and a taper angle of an angle between a line connecting both ends of the line of weakness that becomes the rim of the widened portion and the width direction is 25 degrees to 60 degrees.

2. The package according to claim 1, wherein, a length of the curved convex portion in the depth direction is 25 mm to 45 mm, and a bulging length of the curved convex portion in the width direction is 2.5 mm to 12.5 mm. ​ ​

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