Packaging body

Abstract

The present invention provides a film package of sanitary tissue paper with excellent opening properties. The problem of the present invention is solved by a package of a bundle of sanitary tissue paper wrapped with a wrapping film made of a soft resin, wherein the package has a take-out port forming portion formed by arranging a breakable line in a ring shape on an upper surface, the breakable line of a rim of at least one end portion in the width direction of the take-out port forming portion is constituted by a perforated line in which a transformed cutting portion of a く-shaped end cutting portion is arranged with a non-cutting portion at one end or both ends of a main cutting portion in a manner having an angle of 90° or more, the breakable line of the rim of at least one end portion in the width direction of the take-out port forming portion is arranged so that the end cutting portion and the end portion of the adjacent other transformed cutting portion without the end cutting portion overlap at least one of the outer side and the central side in the width direction of the take-out port forming portion, and, regarding the overlap of the end cutting portion and the end portion without the end cutting portion, the transformed cutting portion located on the central side in the depth direction of the take-out port forming portion is overlapped in a manner further outside in the width direction of the take-out port forming portion.

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 die-cutting or other demolding techniques, and is set to have a width in the depth direction, like an approximately elliptical outlet (see Patent Documents 1 and 2 below). In addition, in recent years, in order to further improve the removability, the outlet has also been set to an approximately gourd-shaped shape by widening the end in the width direction.

[0005] However, the conventional 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 also easy to use for wiping skin or objects other than the face, 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, the following defects are very likely to occur: ejection defect, where the next tissue paper falls in without being pulled when ejected; or standing defect, where the tissue paper lies flat on the upper surface of the packaging instead of standing upright.

[0007] On the other hand, for example, such as Figure 9 As shown in (a), the generally elliptical-shaped outlet forming portion, in the outlet forming portion 105 formed by arranging the perforation lines 150 in a ring shape using die-cutting or other demolding techniques, such as... Figure 9 As in (b), the area 105Z within the annular perforated line is cut and peeled off from one end 105A in the long side direction X toward the other end 105B, thereby having the advantage of easily forming an opening. However, when performing such an opening operation, at the other end 105B, as it approaches the last end to be cut off, the direction in which the perforated line 150 breaks is nearly perpendicular to the direction in which the area 105Z within the annular perforated line is stretched. Therefore, as... Figure 9 As shown in (c), near the perforation line 150e at this end, particularly at the end of 105B, the breaking of the perforation line 150 cannot proceed smoothly and continuously, as... Figure 9 As shown in (d), unexpected tears 105P sometimes occur at the end of the extraction port 106. In the extraction port forming portion 105 formed by arranging the perforation lines 150 in a ring, as the end in the width direction widens in the depth direction Y, the range of the perforation lines in the direction approximately orthogonal to the cutting and peeling direction becomes longer, thus making this tearing more likely to occur. Therefore, extraction port forming portions with a generally gourd-shaped end that are widened are prone to tearing 105P.

[0008] Furthermore, such tears 105P are more likely to occur, especially when the packaging film is a uniaxially stretched film extending along a direction Y orthogonal to the long side direction X of the dispensing port forming portion 105. In addition, in packaging bodies in the form of pillow-type packaging and corner-supported packaging, the longitudinal direction (MD direction) of the packaging film is usually parallel to the long side direction of the dispensing port forming portion, thus making such tears more likely to occur.

[0009] Existing technical documents

[0010] Patent documents

[0011] Patent Document 1: Japanese Patent Application Publication No. 2018-052559

[0012] Patent Document 2: Japanese Patent Application Publication No. 2018-058654 Summary of the Invention

[0013] The problem that the invention aims to solve

[0014] Therefore, in view of the above problems, the main objective of the present invention is to provide a film-packaged packaging body that has excellent opening performance, as the edge in the width direction of the opening is not easily torn when opened, and excellent extraction performance of tissue paper, especially hard tissue paper such as paper towels.

[0015] Methods for solving problems

[0016] The means to solve the above problems are as follows.

[0017] The first method is a packaging body made of a soft resin packaging film wrapping a bundle of sanitary tissues. The packaging body has a dispensing opening formed by a ring-shaped tear line on its upper surface. The tear line, forming at least one end edge of the dispensing opening, has perforated lines. Deformable cut portions are arranged between non-cut portions in the perforated lines. The deformable cut portions are formed by connecting U-shaped end cut portions at an angle of 90° or more to one or both ends of a main cut portion. The tear line, forming at least one end edge of the dispensing opening, is configured such that the end cut portion overlaps with the end of another adjacent deformable cut portion (without an end cut portion) at least on one side of the outer or central side of the dispensing opening in the width direction. Furthermore, the overlap of the end cut portion with the end of the non-end cut portion occurs such that the deformable cut portion located on the outer side of the dispensing opening in the width direction is located further outward in the width direction of the dispensing opening.

[0018] The second means is a packaging body of the first means described above, wherein the outlet forming part has the following shape: a narrow part that extends in the width direction at the center in the depth direction; a widening part that is continuous with the end of the narrow part and gradually widens as it moves away from the narrow part in the width direction; and a curved protrusion that is continuous with the widening part and bulges outward in the width direction, wherein the edge of at least one curved protrusion has perforated lines with alternating deformable cut portions and non-cut portions.

[0019] The third means is a packaging body of the second means described above, wherein more than 80% of the portion constituting the edge of the curved protrusion is perforated with alternating deformed cut portions and non-cut portions.

[0020] The fourth method is a packaging body of the second method described above, wherein the length of the curved protrusion in the depth direction is 25mm to 45mm, and the bulging length of the curved protrusion in the width direction is 2.5mm to 12.5mm.

[0021] The fifth method is a packaging body of the second to fourth methods described above, wherein the length of the outlet forming portion in the width direction is 70% or more of the length of the upper surface of the bundle in the width direction, the maximum length of the outlet forming portion in the depth direction is 10% to 40% of the length of the upper surface of the bundle 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 of the bundle 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 of the bundle in the depth direction.

[0022] The effects of the invention

[0023] According to the present invention, a film-packaged packaging body can be provided such that, upon opening, the edge in the width direction of the dispensing opening is not easily torn and has excellent opening performance; furthermore, the dispensing performance of tissue paper, especially stiff tissue paper such as paper towels, is excellent. Attached Figure Description

[0024] Figure 1 This is a perspective view illustrating the packaging of the present invention.

[0025] Figure 2 This is a three-dimensional diagram used to illustrate the bundle of tissue paper.

[0026] Figure 3 This is a top view used to illustrate the outlet forming section.

[0027] Figure 4 This is a perspective view illustrating how the packaging body of the present invention is used.

[0028] Figure 5 This is a magnified view of a portion used to illustrate the formation of the outlet.

[0029] Figure 6 This is a diagram used to illustrate other examples of the outlet forming section.

[0030] Figure 7 This is a diagram used to illustrate other shape examples of the outlet forming section.

[0031] Figure 8 This is a diagram used to illustrate another example of the outlet forming section.

[0032] Figure 9 This is a diagram used to illustrate the conventional outlet formation. Detailed Implementation

[0033] Hereinafter, reference will be made to embodiments thereof. Figures 1 to 8 This is an explanation. It should be noted that the directions such as up / down and left / right in this invention and specification change depending on the orientation of the packaging and do not imply absolute spatial directions. Additionally, rigidity is sometimes referred to as the hardness, stiffness, or strength of the paper.

[0034] 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.

[0035] Figures 1-4 An embodiment of a gusseted packaging is shown. This gusseted packaging is a pillow-type packaging with side panels. The bundle 3, which is to be packaged, is wrapped in 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 gusseted 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... Figure 7 Other appropriate packaging forms include overlapping packaging, also known as caramel packaging, which involves overlapping and fusing flaps to form the short side 4A, as shown.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 with the above-mentioned basis weight as one or two layers 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 thickness 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.

[0040] 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 sheets were fully conditioned according to JIS P8111 (1998) conditions, in a multi-layer condition.

[0041] 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.

[0042] 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%.

[0043] 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.

[0044] The dispensing outlet forming portion 5 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 outlet forming portion 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., the dispensing outlet 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 pulled out from the formed dispensing outlet, a portion of the next tissue paper directly below it is exposed from the dispensing outlet. Furthermore, in this dispensing outlet forming portion 5, since the tear-resistant line 50 is arranged in a ring shape, the dispensing outlet 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.

[0045] Figures 1-5The package 1 shown represents a package having a particularly preferred shape, namely a generally gourd-shaped outlet forming portion 5. The outlet forming portion 5 has: a narrow portion 51 extending in the width direction from the center of the upper surface 4C in the depth direction; a widening portion 52 that is continuous with the end of the narrow portion 51 and gradually widens away from the narrow portion 51 in the width direction outward toward the bundle 3; and a curved protrusion 53 that is continuous with the widening portion 52 and bulges outward in the width direction outward toward the bundle 3.

[0046] The widening portion 52 is particularly preferably configured such that the angle of the easily fractured line 50 gradually increases as it moves outward relative to the width direction of the bundle 3. The cone angle ∠α of the easily fractured line 50, which forms the edge of the widening portion 52, relative to the width direction is preferably 25 degrees to 60 degrees.

[0047] 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, it can easily and smoothly crack from the widened portion 52 toward the curved protrusion 53.

[0048] In Figures 1-5 In the embodiment shown, in the outlet 6 formed by the outlet forming portion 5, a generally trapezoidal free edge piece 51A is formed near the edge from the narrow portion 51 to the widened portion 52, which is easy to move in the vertical direction. Therefore, especially as Figure 4 As shown, when a set of tissue sheets 2 is pulled out from bundle 3, the edge piece 51A deforms slightly in the direction of extraction, resting against and supporting the next set of tissue sheets 2 that are exposed. Furthermore, at the outlet 6 formed based on the outlet forming portion 5, the root portion 2R of the next tissue sheet exposed from the outlet 6, which is continuous with the tissue sheet pulled out from bundle 3, deforms by winding along the edge 6E of the curved protrusion 53, thereby easily deforming into a columnar shape with high uprightness. Moreover, the area between the widened portion 52 and the curved protrusion 53 forms a recess 6H when serving as the outlet 6, so the root portion 2R of the next tissue sheet exposed from the outlet 6 is embedded in the recess 6H, thereby improving uprightness. In particular, in the outlet forming portion 5, the ejection defects caused by the tissue sheet falling into the packaging film, which are prone to occur when the tissue sheet has high rigidity, are 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 the sanitary tissue paper described above, and the preferred packaging film described later. However, as Figure 7 As shown, the outlet forming portion 5 of the present invention may also be in a shape without the widening portion 52. Furthermore, in the outlet forming portion 5, a straight, easily breakable line connected to the annular easily breakable line may be present, to a extent that it does not impede the effect of the present invention.

[0049] In addition, in such Figures 1-5 In the shape of the dispensing outlet forming portion 5 shown, which has a narrow portion 51, a widened portion 52, and a curved protrusion 53, it is particularly preferable that the length L1 of the entire dispensing outlet forming portion 5 in the width direction is 70% or more of the length L2 of the upper surface of the bundle 3 in the width direction; the maximum length L3 of the entire dispensing outlet forming portion 5 in the depth direction is 10-40% 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 50-70% 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 0.5-10% of the length L4 of the upper surface of the bundle 3 in the depth direction. In this shape of the dispensing outlet forming portion 5, a curved protrusion 53 that is particularly wide in the depth direction is formed. In addition, the free edge piece 51A formed near the edge of the narrow portion 51 is wider and larger, allowing the narrow portions 51 to open more widely during extraction. Therefore, the tissue paper 2 can be smoothly extracted from the bundle 3. 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, thus making the packaging film at the upper surface of the packaging body 1 prone to deformation, or packaging forms where the inner tissue paper is a rigid tissue paper 2 such as the aforementioned weight and thickness of paper towels, and the upper surface of the packaging body 1 is prone to deformation when pulled out, the upper surface is less likely to tilt when the tissue paper 2 is pulled out and is more likely to remain flat. When the tissue paper 2 is taken out one by one, it is easy to remove it very stably. In addition, the free, roughly trapezoidal edge piece 51A formed near the edge of the narrow portion 51 is wider and larger, and has a deep recess 6H. Therefore, the edge piece also firmly rests against the rigid tissue paper 2 and supports the root portion 2R of the tissue paper 2, thus effectively preventing it from falling in. In addition, since the length of the edge of the curved protrusion 53 is increased, the tissue paper 2 is rolled gently along the edge of the curved protrusion 53. However, in the case of the tissue paper 2 with high rigidity, it is difficult to bend stiffly, so the uprightness is further improved.

[0050] 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.

[0051] 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.

[0052] Polypropylene film and polyethylene film are particularly preferred. Alternatively, the 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).

[0053] 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.

[0054] Here, regarding the outlet forming part 5 of the present invention, in particular as Figure 5 and Figure 6 As shown, at the edge of at least one end (the other end 5B in the example figure) in the width direction of the outlet forming portion 5, the easily breakable line 50 has perforated lines arranged with deformable cutting portions 50D across non-cutting portions 50U. The deformable cutting portions 50D are formed by connecting a U-shaped end cutting portion 50e at an angle of 90° or more to the end of the main cutting portion 50m. For example... Figure 5 As shown, the deformable cutting portion 50D can be configured as: a deformable cutting portion 50D with an end cutting portion 50e formed in the shape of a "く" only at one end. 1 ; or a modified cut portion 50D with "く"-shaped end cut portions 50e at both ends. 2 They can coexist in mixture. For example... Figure 6 (a) and Figure 6 As shown in (b), it can also be constructed solely of a modified cut portion 50D, which has an end cut portion 50e with a "く" shape formed only at one end. Moreover, in particular, as Figure 6As shown in (b), it is also possible to configure it in such a way that a cutting section 50C without an end cutting section 50e is arranged between the perforation lines arranged between the deformable cutting section 50D and the non-cutting section 50U.

[0055] In addition, Figures 1-6 In the shape of the outlet forming portion 5 shown, particularly in the portion constituting the edge of the curved protrusion 53, more than 80% of the area is a portion 50P in which the deformed cutting portion 50D and the non-cutting portion 50U are alternately arranged. Furthermore, in this curved protrusion 53, preferably more than 90%, and particularly preferably more than 95%, the portion 50P is a portion 50P in which the deformed cutting portion 50D and the non-cutting portion 50U are alternately arranged. The entire area can also be formed by a tear-prone line in which the deformed cutting portion 50D and the non-cutting portion 50U are alternately arranged. Additionally, Figure 5 and Figure 6 The illustration shows a portion 50P forming the edge of the curved protrusion 53, with alternating deformed cut portions 50D and non-cut portions 50U. However, the invention is not limited to this. Figure 7 As shown, it is also possible that the edge of the end of the outlet forming part 5, which is a simple, roughly elliptical shape, is a structure in which the deformed cutting part 50D and the non-cutting part 50U are alternately arranged.

[0056] More specifically, especially as Figure 5 As shown, the end cutting portion 50e in the deformable cutting portion 50D has a first cutting portion 50e that is continuous with the main cutting portion 50m. 1 and the first cutting part 50e 1 Continuous second cutting section 50e 2 They are connected by an angle of ∠β of more than 90°, forming a "く" shape.

[0057] Furthermore, the arrangement of the deformable cutting portions 50D in the portion where deformable cutting portions 50D and non-cutting portions 50U are alternately arranged is configured such that a portion of the end cutting portion 50e is arranged to overlap with the end portion 50t of the adjacent deformable cutting portion that is not provided with an end cutting portion at a position on at least one side of the outer side and the central side in the width direction of the take-out forming portion 5, and regarding the overlap between the end cutting portion 50e and the end portion 50t that is not provided with an end cutting portion, the deformable cutting portion 50D located on the central side in the depth direction of the take-out forming portion 5 overlaps in such a way that the deformable cutting portion 50D located on the central side in the depth direction of the take-out forming portion 5 becomes the outermost side in the width direction of the take-out forming portion 5. Figure 5 This is an example of the end-cut portions 50e being arranged in a manner that overlaps only on the outer side of the outlet forming portion 5 in the width direction. However, the end-cut portions 50e do not necessarily need to be located further out in the width direction of the outlet forming portion 5; they can also be arranged as follows: Figure 6 As shown in (b), the end-cut portions 50e are arranged in a manner that overlaps only on the central side in the width direction of the outlet forming portion 5, or as shown in (b). Figure 6 As shown in (a), the portion of the end-cut portion 50e that overlaps on the outer side of the outlet forming portion 5 in the width direction and the portion that overlaps on the central side of the outlet forming portion 5 in the width direction are mixed together. In the present invention, it is sufficient that the deformed cut portion 50D (not the end-cut portion 50e) located on the central side of the depth direction of the outlet forming portion 5 overlaps in such a way that it is on the outer side. In addition, the same applies when the cut portion 50C, which does not have the end-cut portion 50e, overlaps with the end-cut portion 50e, as shown in (a). Figure 6 As shown in (b), when the cutting portion 50C without the end cutting portion 50e is located closer to the center side of the extraction outlet forming portion 5 in the depth direction than the adjacent deformable cutting portion 50D, the end of the cutting portion 50C without the end cutting portion 50e can overlap with the end of the cutting portion 50C in the width direction of the extraction outlet forming portion 5 in a manner that is closer to the outer side of the end cutting portion 50e of the deformable cutting portion 50D in the width direction.

[0058] Furthermore, it is preferable that the second cutting portion 50e in the end cutting portion 50e is... 2 It is configured substantially parallel to the main cutting section. Furthermore, substantially parallel does not need to be perfectly parallel; an error of approximately ±10° is acceptable.

[0059] Regarding the outlet forming portion 5 of the present invention, in a general opening operation in which the portion is continuously stretched from one end 5A to the other end 5B of the range surrounded by the easily tearable line 50, a portion 50P in which a deformable cutting portion 50D and a non-cutting portion 50U are alternately arranged at the last part that is most easily torn, i.e. the end in the width direction (the other end 5B in the example). In a portion 50P where deformable cut portions 50D and non-cut portions 50U are alternately arranged, during a typical opening operation where the packaging film is continuously stretched from one end 5A to the other end 5B of the area surrounded by the tear line 50, at the edge of the other end 5B, in adjacent deformable cut portions 50D, since the end cut portion 50e overlaps with the end 50t where no end cut portion is provided, especially in a manner where the deformable cut portion 50D located on the central side of the depth direction of the dispensing outlet forming portion 5 overlaps further outward in the width direction of the dispensing outlet forming portion 5, there is an end cut portion 50e that has been cut off at a position further outward in the width direction than the non-cut portion 50U in the stretching direction. When the non-cut portion 50U located between the deformable cut portions 50D cracks during this opening operation, even if a minor tear occurs in the packaging film, the tear will not immediately continue to advance further with the end cut portion 50e of the adjacent deformable cut portion 50D that has already cracked. Furthermore, the ends of adjacent deformable cut portions 50D are staggered in both the width and depth directions. Therefore, during a typical opening operation involving continuous stretching from one end 5A to the other end 5B within the area enclosed by the tear line 50, the non-cut portions 50U between them will twist just before being cut, thus reducing the likelihood of film tearing or elongation. In this way, by forming the portion 50P of the present invention, consisting of alternating deformable cut portions 50D and non-cut portions 50U, at the end in the width direction (the other end 5B in the example figure), opening is easier, and the possibility of tearing during opening is reduced. Additionally, since the end cut portion 50e is continuous with the main cut portion 50m at an angle of 90° or more, it opens smoothly from the end cut portion 50e to the main cut portion 50m during cutting. Furthermore, if the first cut portion 50e... 1 With the second cutting section 50e 2 If the angle between them is also 90° or higher, the opening will be smoother during cutting.

[0060] Furthermore, in particular, it excels in the excellent pull-out properties of rigid paper towels, etc. Figures 1-5In the generally gourd-shaped form shown, with a narrow portion 51, a widened portion 52, and a curved protrusion 53, and especially in the shape having the aforementioned preferred numerical range, the tear-prone line of the edge constituting the curved protrusion 53 is relatively long and arranged along the depth direction. Therefore, the angle between the stretching direction during opening and the tearing direction of the tear-prone line is large, making it prone to tearing of the packaging film 4 during opening. However, by providing a portion 50P at its end with alternating deformable cutting portions 50D and non-cutting portions 50U according to the present invention, the concern about tearing becomes particularly small. This is especially effective in packaging forms such as pillow-type or gusset-type packaging, where the longitudinal direction (MD direction) of the packaging film 4 is parallel to the long side direction of the dispensing opening portion 5, which are prone to tearing.

[0061] Furthermore, in the dispensing outlet forming section 5 of the present invention, in the section 50P where the deformable cutting section 50D and the non-cutting section 50U are alternately arranged, the position of the end of the deformable cutting section 50D is slightly deviated from the extension direction of the main cutting section 50m inward or outward in the width direction due to the end cutting section 50e. Therefore, when the dispensing outlet 6 is formed, the portion that is 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 removed tissue paper and partially exposed from the dispensing outlet, improving the prevention of falling in.

[0062] Here, the particularly preferred form of the outlet forming portion 5 of the present invention is as follows: Figure 5 As shown, the deformable cut portion 50D is located on the width extension line of the center C in the depth direction of the narrow portion 51. This deformable cut portion 50D has end cut portions 50e overlapping on the outer side in the width direction at both ends. 2 Furthermore, located 50D above the deformed cut portion 2 The deformed cut portion 50D located on the outer side in the depth direction becomes a deformed cut portion 50D that has an end cut portion 50e overlapping on the outer side in the width direction only at the end located on the outer side of the depth direction at the center C of 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 2The 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, making it difficult for the tear to proceed further.

[0063] The length ratio of the deformed cut portion 50D to the non-cut portion 50U at the end of the outlet forming portion 5 is not limited, but although the length L8 of the deformed cut portion 50D is not limited, it is desirable to be 5mm or more and 20mm or less, preferably 7mm or more and 13mm or less. Additionally, the first cut portion 50e in the end cut portion 50e... 1 With the second cutting section 50e 2 The length L9 does not need to be the same, but it is desirable to be 0.2 mm or more and 3.0 mm or less, preferably 0.5 mm or more and 2.5 mm or less. Furthermore, the length L11 of the non-cut portion 50U between the deformed cut portions 50D is desirable to be 0.2 mm or more and 3.0 mm or less, preferably 0.3 mm or more and 2.0 mm or less.

[0064] Furthermore, the overlap width L12 between the end of the end-cut portion 50e and the end of the adjacent deformable cut portion without an end-cut portion is not limited, but is preferably 0.2 mm or more and 3.0 mm or less, more preferably 0.3 mm or more and 2.0 mm or less. Within these ranges, the non-cut portion 50U can be cut off between the deformable cut portions 50D with extremely low tearing, and the splitting can be performed more continuously and smoothly.

[0065] In addition, the main cutting section 50m at the end cutting section 50e and the first cutting section 50e 1 The angle ∠β between them, and the first cutting part 50e 1 With the second cutting section 50e 2 The angle ∠γ between them does not need to be the same, but can be in the range of 90° or more. Preferably, it is in the range of 100° or more, and more preferably in the range of 120° or more. Furthermore, it is preferable that the main cutting portion 50m and the first cutting portion 50e are... 1 Between, and the first cutting section 50e 1 With the second cutting section 50e 2 The edges are chamfered, and they do not need to be identical, but their curvature is not limited and can be R0.1 to R2.0, more preferably R0.2 to 1.2, and particularly preferably R0.4 to 1.1. If this curvature is used, the opening of the deformable cutting section can be easily and smoothly carried out from the main cutting section 50m toward the end cutting section 50e, or from the end cutting section 50e toward the main cutting section 50m.

[0066] Furthermore, in the easily crackable line 50 constituting the edge of the outlet forming portion, the portion 50P, which alternately has deformable cutting portions 50D and non-cutting portions 50U, can be located at both ends of the outlet forming portion 5, or it can be located only at one end. If it is formed only at one end, then the opposite end, for example, Figure 8 As shown in (a), the cutting section can be configured such that the range L10 is continuous from the middle of the widened section 52A on one side in the depth direction to the position beyond the outer end 53t of the curved protrusion 53A. Thus, as shown... Figure 8 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.

[0067] Regarding the thickness of the packaging film 4, any appropriate selection is acceptable, but it is preferred that the thickness measured according to JIS P 8118 (1998) be 20–75 μm. If the thickness is 20–75 μm, the effects of the present invention can be particularly effectively demonstrated. The thickness is measured using a dial-type thickness gauge (thickness measuring instrument) “PEACOCK G-1A type” (manufactured by Ozaki Manufacturing Co., Ltd.) and equivalent equipment after the sample has been fully conditioned under the conditions specified in JIS P 8111 (1998).

[0068] In the easily breakable line 50 constituting the outlet forming portion 5 of the present invention, the portion other than the portion in which the deformable cutting portion 50D and the non-cutting portion 50U are alternately arranged can be a perforated line, a slit with an uncut portion (non-cutting portion), etc. However, it is not limited to this.

[0069] The type of perforation line is not limited as long as the portion other than the non-cut portion 50U arranged between the deformable cut portion 50D and the perforation line is defined. Examples include a general perforation line where the cut portion 50C is a straight line, a micro-perforation line where the cut portion is a hole, and a zipper perforation line where the cut portion is Y-shaped, approximately L-shaped, or <-shaped. A general perforation line is preferred. A slit is a portion formed by cutting the film into a slit shape, but it has a non-cut portion, and 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. Perforation lines and slits with non-cut portions are sometimes not distinguished, but in this invention, regarding slits, except for special shapes such as the deformable cut portion 50D, a slit is defined as a general straight cut portion that is less than two intervals, that is, a general cut portion of the same length that is not consecutive twice. Generally speaking, the length of the cut portion of the slit is longer than that of the perforation line.

[0070] Regarding the perforation line or the cutting connection ratio of the non-cutting slit in the portion other than the alternating arrangement of the deformable cutting portion 50D and the non-cutting portion 50U, the appropriate interval is determined according to the ease of breakage of the membrane used. However, the length of the cutting portion can be appropriately designed from a range of 0.8 mm to 20.0 mm, and the length of the non-cutting portion (connecting portion or non-cutting portion) can be appropriately designed from a range of 0.3 mm to 5.0 mm.

[0071] Furthermore, regarding the non-cut portion 50U in the easily ruptured line 50 of the present invention, in part or all of it, from the side not facing the bundle 3 (front side) to the side facing the bundle 3 (back side) in the thickness direction of the packaging film 4, it is not completely cut off, and can be set as a half-cut portion that cuts into a predetermined depth range in the thickness direction. By setting the non-cut portion 50U as a half-cut portion with a cut, the force required to rupture the packaging film 4 is reduced, and the rupture of the easily ruptured line 50 is easier to proceed continuously and smoothly. The non-cut portion 50U between the deformable cut portions 50D at the end of the outlet forming portion 5 (especially located at the curved protrusion 53) can also be a half-cut portion. The depth of cut in the half-cut portion is not limited, but is preferably 20% or more and 80% or less of the thickness of the packaging film.

[0072] In addition, Figures 1-5 In the shape shown, which has a narrow portion 51, a widened portion 52, and a curved protrusion 53, the extending direction of the edge of the narrow portion 51 is consistent with the stretching direction during the opening operation from one end 5A to the other end 5B. Therefore, it is preferable to form a perforated line that is not a half-cut portion. The edge of the narrow portion 51 is less likely to break accidentally.

[0073] 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.

[0074] Example

[0075] Next, Examples 1-4 and Comparative Examples 1-2 of the present invention were prepared, and tests were conducted on the falling of the sanitary tissue and the tearing of the opening and dispensing port. The shapes of the dispensing port forming portions of the packaging bodies of Examples 1-4 and Comparative Example 1 are 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 2 is a simple straight perforation line.

[0076] 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). 2The 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.

[0077] 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.

[0078] 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."

[0079] 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.

[0080] [Table 1]

[0081]

[0082] *In Comparative Example 1, the length is the length of the cut section.

[0083] According to Table 1, in Examples 1 to 4, in which the edge of the end (bent protrusion) is provided with alternating deformable cutting portions and non-cutting portions, 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. Although it is a structure that is easy to tear, no tearing of the end of the take-out port was detected during the opening operation.

[0084] In Comparative Example 1, the cutting portion of the curved protrusion in Example 1 was replaced with a conventional cutting portion without an end cutting portion instead of a deformable cutting portion. However, in Comparative Example 1, tearing occurred at the end of the dispensing port during the opening operation. Even with a crack-protrusion edge having a very long length, as in the Example, by configuring this portion with a structure that alternates between deformable and non-cutting portions, tearing at the end of the dispensing port can be prevented during the opening operation.

[0085] Therefore, for example, if it is Figure 7 Other narrow outlet shapes without the widened portion shown can be said to further prevent tearing of the outlet end during opening operations by setting the easily tearable line constituting the edge of the end as a structure in which deformable cutting portions and non-cutting portions are alternately arranged.

[0086] Furthermore, regarding the issue of falling in, in Comparative Example 2, where the outlet forming portion has a single perforated line and the outlet is a slit, a falling in number of times was confirmed to be 12. In contrast, in Examples 1 to 4 and Comparative Example 1, the falling in number was 0, and falling in could not be confirmed. That is, it is particularly evident that the outlet formed by the shape of the outlet forming portion having a narrow portion, a widened portion, and a curved protrusion exhibits excellent anti-falling-in performance.

[0087] As can be seen from the above, the packaging body of the present invention is a film packaging body that is not easily torn in the width direction of the opening when opened, thus having excellent opening performance, and further having excellent pull-out performance for tissue paper, especially hard tissue paper such as paper towels.

[0088] Label Explanation

[0089] 1: Packaging body;

[0090] 2: Toilet tissue paper;

[0091] 2A: The inner side of the turnaround;

[0092] 2B: Returning film;

[0093] 2C: Returning edge;

[0094] 2R: The base of the tissue paper exposed from the dispensing port;

[0095] 3: Bundles of toilet paper;

[0096] 3A: Short side;

[0097] 3B: Long side;

[0098] 3C: The upper and lower surfaces of the bundle;

[0099] 4: Packaging film;

[0100] 4A: Short side view;

[0101] 4B: Long side view;

[0102] 4C: Top surface;

[0103] 4D: Lower surface;

[0104] 4X: Overlapping portion of the packaging film;

[0105] 5: Take out the outlet forming part;

[0106] 5A, 5B: Ends along the longer side;

[0107] 5T: Free Film;

[0108] 6: Take out the exit;

[0109] 6E: Take the edge of the exit;

[0110] 6H: Take the recessed part of the outlet;

[0111] 50: The thread is prone to cracking;

[0112] 50D, 50D 1 50D 2 Deformation and cutting section;

[0113] 50m: Main cutting section;

[0114] 50e: End-cut section;

[0115] 50e 1 First cutting section;

[0116] 50e 2 Second cutting section;

[0117] 50t: The end of the non-deformable cutting section;

[0118] ∠β: The angle between the main cutting part and the first cutting part;

[0119] ∠γ: The angle between the first cutting part and the second cutting part;

[0120] 50C: Cutting section;

[0121] 50U: Non-cutting part (connecting part);

[0122] 50P: A section with alternating deformable and non-deformable sections;

[0123] 51: Narrow section;

[0124] 51A: Roughly trapezoidal shaped rim;

[0125] 52: Widened section;

[0126] 53: Curved protrusion;

[0127] ∠α: The cone angle of the widened portion;

[0128] Q: Overlapping parts;

[0129] L1: The length of the width (long side) of the outlet forming part;

[0130] L2: The length of the upper surface of the bundle in the width direction (long side direction);

[0131] L3: The maximum length of the exit forming section in the depth direction (short side direction);

[0132] L4: Length of the upper surface of the bundle in the depth direction (short side direction);

[0133] L5: Length of the narrow section in the width direction (long side direction);

[0134] L6: Length of the narrow section in the depth direction (short side direction);

[0135] L7: The bulge length in the width direction of the curved protrusion;

[0136] L8: Length of the deformed cut section;

[0137] L9: The length of the first and second cutting sections;

[0138] 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;

[0139] L11: The length of the non-cut portion between the deformed and cut portions;

[0140] L12: The overlap width between the end of the adjacent deformable cutting section and the end of the non-set end cutting section;

[0141] 105: Take out the outlet forming part;

[0142] 105A: Take one end of the outlet forming section;

[0143] 105B: Take the other end of the outlet forming section;

[0144] 105P: Membrane tear;

[0145] 150: Perforated wire;

[0146] 150e: Perforation line at the end in the width direction;

[0147] X: Long side direction (width direction);

[0148] Y: The direction orthogonal to the long side (depth direction);

[0149] Z: The thickness direction of the packaging film;

[0150] C: The center of the narrow section in the depth direction.

Claims

1. A packaging body comprising a bundle of sanitary tissues wrapped in a soft resin packaging film, characterized in that, The packaging body has a dispensing opening formed by a ring of easily tearable lines on the upper surface of a soft resin packaging film. The packaging film is peeled off by continuously stretching it from one end to the other in the width direction, thereby forming a dispensing opening for removing tissue paper on the upper surface of the packaging film. The edge of at least one end of the outlet forming portion in the width direction has a perforation line, in which deformable cut portions are arranged alternately with non-cut portions. The deformable cut portions are formed by connecting U-shaped end cut portions at an angle of 90° or more to one or both ends of a main cut portion extending along the periphery of the outlet to be formed. The easily ruptured line of at least one end edge constituting the outlet forming portion in the width direction is configured such that the end cut portion overlaps with the end of the uncut portion of an adjacent deformable cut portion at least on one side of the outer and central sides in the width direction of the outlet forming portion, and, Regarding the overlap of the end-cut portion and the end without the end-cut portion, the deformable cut portion located at the center side of the depth direction of the take-out forming portion is located further outward in the width direction of the take-out forming portion, so that the end-cut portion that has been cut exists at a position further outward in the width direction than the non-cut portion in the stretching direction, and the ends of the adjacent deformable cut portions are staggered from each other in both the width direction and the depth direction.

2. The packaging body according to claim 1, wherein, The outlet forming portion has the following shape: a narrow portion that extends along the width direction from the center in the depth direction; a widening portion that 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 a curved protrusion that is continuous with the widening portion and bulges outward in the width direction. The easily cracked line has only the portion of the edge constituting at least one curved protrusion having alternating perforated sections with deformed cut sections and non-cut sections.

3. The packaging body according to claim 2, wherein, More than 80% of the area constituting the edge of the curved protrusion is perforated with alternating deformed cut portions and non-cut portions.

4. The packaging body according to claim 2, wherein, The length of the curved protrusion in the depth direction is 25mm to 45mm, and the bulging length of the curved protrusion in the width direction is 2.5mm to 12.5mm.

5. The packaging body according to any one of claims 2 to 4, wherein, The length of the outlet forming portion in the width direction is more than 70% of the length of the upper surface of the bundle in the width direction, the maximum length of the outlet forming portion in the depth direction is 10% to 40% of the length of the upper surface of the bundle 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 of the bundle 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 of the bundle in the depth direction.

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