Package for paper product

Abstract

To provide a package for a paper product which prevents a content of an article to be packed from crumbling even when the article to be packed is a paper product such as tissue paper, is easy to carry, and has a perforation that can be easily opened when used.SOLUTION: A film packaging base material has a basis weight of 20 g / m2 or more and 110 g / m2 or less and a thickness of 20 μm or more and 120 μm or less. Seal parts are provided respectively at both end parts of a mountain folding part. A distance A between the mountain folding parts of the film packaging base material and a length B of a paper product are such that (B / A×100(%)) is 65% or more and 175% or less. The paper product is a tissue paper laminate having 2 or more plies of tissue paper laminated in 80 sets or more and 150 sets or less, at least one take-out port of a perforation is provided, and the perforation has a bond rate of 5% or more and 60% or less, and ((length of perforation÷length parallel to mountain fold line of paper product)×100 (%)) of 40% or more and 90% or less.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a paper product package suitable for packaging paper products, particularly paper products such as tissue paper. [Background technology]

[0002] 2. Description of the Related Art Conventionally, packages that house, as packaged items, roll-shaped paper products such as toilet paper and kitchen paper, and layered paper products such as tissue paper and wipers, have been known.

[0003] For example, Patent Document 1 discloses a packaging body for packaging rolled paper products, in which a gusset is folded symmetrically into a tubular film such as polyethylene to form a main body, and the upper part of the body is folded flat to form a handle.

[0004] On the other hand, a paper carton made of a paperboard with a high basis weight is generally used as a package for packaging laminated paper products. As an alternative to the paper carton, for example, Patent Document 2 discloses a film package in which a perforation is provided in the center of the upper surface of a packaging bag made of a flexible resin film.

[0005] However, when the packaging material is a resin film, although it is flexible, it generally loses its shape easily, and the conditions under which the paper product is packaged, sealed, transported, or used, especially external loads, tend to affect the condition of the paper product inside the package.

[0006] For example, if the film is made thicker to maintain the packaging shape, the perforations become difficult to open, and strong force must be applied to open and use the product. This causes the packaging base material to deform due to tearing or stretching, causing the shape of the package to be significantly distorted, and as a result, the packaged paper product also loses its shape, making it difficult to remove from the package and making it unsuitable for use. In addition, if the packaged product is a soft lotion tissue, it may become difficult to carry the packaged product if the package is not held down with strong force, so it is desirable for the packaged product not to deform even when held down with strong force. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2004-269010 A [Patent Document 2] JP 2016-188092 A Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above circumstances, and aims to provide a packaging body for paper products, which prevents the contents of the packaged items from falling apart (and is easy to remove), is easy to carry, and has perforations that are easy to open when in use, even when the packaged items are paper products, particularly paper products such as tissue paper. [Means for solving the problem]

[0009] The inventors have conducted extensive research and found that the above problems can be solved by providing a package for paper products in which a paper product is covered with a film packaging substrate having four mountain folds extending in one direction that are substantially parallel to each other, and the paper product is sealed by a seal portion, the mountain folds all having creases, the film packaging substrate having a basis weight and thickness within a predetermined range, the ratio of the distance between the mountain folds in the direction perpendicular to the linear direction of the seal portion at the center of the mountain folds of the film packaging substrate to the length in the direction perpendicular to both the linear direction of the seal portion and the linear direction of the mountain folds in the paper product, the number of sets of paper products and the height of the package, each within a predetermined range, and further the bond rate and ratio of the linear perforations for an opening to be provided on the top surface of the package, within a predetermined range, and thus completing the present invention. That is, the present invention provides the following.

[0010] (1) A first aspect of the present invention is a package for a paper product, in which a paper product is covered with a film packaging substrate having four mountain folds extending in one direction that are approximately parallel to each other, and the paper product is sealed by a seal portion, in which each of the mountain folds has a crease, and the film packaging substrate has a basis weight of 20 g / m. 2 More than 110g / m 2 the thickness is 20 μm or more and 120 μm or less, the sealed portions are provided at both ends of the mountain fold, and both are formed in a substantially straight line perpendicular to the direction of the mountain fold and substantially parallel to each other, the distance between the mountain folds at the center of the mountain fold in the direction perpendicular to the linear direction of the seal portion is defined as A, and the length of the paper product in the direction perpendicular to both the linear direction of the seal portion and the linear direction of the mountain fold is defined as B, the ratio of B to A ( the paper product is a tissue paper laminate having 80 to 150 sets of two or more plies of tissue paper laminated together, at least one straight perforated outlet port parallel to the mountain fold lines is provided on the top surface of the package, the perforations have a bond rate of 5% to 60%, and the ratio defined by ((perforation length ÷ length of paper product parallel to the mountain fold lines) × 100(%)) is 40% to 90%.

[0011] (2) A second aspect of the present invention is the packaging body for paper products described in (1), characterized in that the longitudinal tear strength of the film packaging base material is 3N or more and 19N or less.

[0012] (3) A third aspect of the present invention is the packaging body for paper products described in (2), characterized in that the lateral tear strength of the film packaging base material is 5N or more and 27N or less.

[0013] (4) A fourth aspect of the present invention is the packaging body for paper products described in (3), characterized in that the longitudinal tensile strength of the film packaging base material is 7N or more and 39N or less.

[0014] (5) A fifth aspect of the present invention is a packaging body for paper products according to (4), characterized in that the lateral tensile strength of the film packaging base material is 5N or more and 30N or less.

[0015] (6) A sixth aspect of the present invention is the packaging body for paper products according to (5), characterized in that the film packaging base material is a tube-type film.

[0016] (7) A seventh aspect of the present invention is the packaging body for paper products described in (5), characterized in that the packaging format using the film packaging base material is gusset packaging. Effect of the Invention

[0017] According to the present invention, even when the packaged item is a paper product, particularly a paper product such as tissue paper, it is possible to provide a packaging body for paper products in which the contents of the packaged item are not easily crumbled (easy to remove), are easy to carry, and the perforations are easy to open when in use. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view showing an example of a packaging body for paper products and a paper product of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a process of opening the perforation of the paper products package of the present invention and removing lotion tissue paper from the formed removal opening. [Diagram 3] FIG. 2 is a perspective view showing an example of gusset packaging of a paper product in the paper product packaging body of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, the form for carrying out the present invention (hereinafter, the embodiment) will be described in detail with reference to the drawings. However, these are presented for the purpose of illustration only and are not intended to limit the present invention. In the present specification, the MD direction refers to the manufacturing line direction (conveying direction) during the manufacture of the paper product packaging body and is also called the vertical direction, while the CD direction refers to the direction perpendicular to the manufacturing line direction and is also called the horizontal direction.

[0020] <Packaging for paper products> 1 and 2 are perspective views showing an example of a process for removing a paper product packaging body 1 (hereinafter also simply referred to as a "package") of the present invention and a paper product 11. In the packaging body 1 of the present invention, a paper product 11, for example a laminate of lotion tissue paper 21, is covered with a film packaging substrate 10, and the paper product 11 is sealed with a seal portion 13. The seal portion 13 is preferably provided at an end portion where the film packaging substrates 10 overlap. The packaging body 1 also has a removal opening 15 for removing the paper product 11. This removal opening 15 is provided by forming a tear line of perforations 14 in the film packaging substrate 10, so that the tear line can be cut off and opened when in use. The tear line preferably has a single perforated line shape.

[0021] (Sealing part) The sealed portions 13 are preferably formed approximately in a straight line at locations approximately 10 mm from both ends of the package 1, and approximately parallel to each other, but may be formed at other locations as long as the sealability of the package 1 (adhesiveness of the sealed portions 13) can be ensured. When sealing with the sealed portions 13, it is preferable to use heat sealing. In addition, it is not necessary to heat seal the entire sealed portion 13, and it is not necessary to heat seal only a portion of it.

[0022] (Mountain fold) Each mountain fold 12 has a crease, and creases are made along the crease. The length of each crease may be a portion of the mountain fold 12, and is preferably 40% or more, more preferably 60% or more, and even more preferably 80% or more. In the package 1, the film packaging substrate 10 covers the entire paper product 11 in FIG. 1, but it may cover only a portion of the paper product 11 (not shown).

[0023] (Package height A) When the distance between the mountain folds 12 in the center of the mountain folds 12 in the direction perpendicular to the linear direction of the sealed portion 13 is defined as A (see FIG. 3), the lower limit of A is preferably 10 mm or more, more preferably 20 mm or more, and even more preferably 30 mm or more. On the other hand, the upper limit of A is preferably 80 mm or less, more preferably 70 mm or less, and even more preferably 60 mm or less. If A is less than 10 mm, it becomes difficult to hold the package 1 firmly with force, and if it exceeds 80 mm, it becomes difficult to hold the package 1 because it is difficult to grasp it with your hand.

[0024] (Height of paper product B) When the length of paper product 11 in a direction perpendicular to both the linear direction of sealed portion 13 and the linear direction of mountain fold 12 is defined as B (see FIG. 3), the lower limit of B is preferably 5 mm or more, more preferably 10 mm or more, and even more preferably 20 mm or more. On the other hand, the upper limit of B is preferably 140 mm or less, more preferably 100 mm or less, and even more preferably 60 mm or less.

[0025] (Dimension ratio: B / A x 100) The ratio of B to A (B / A×100(%)) is 65% or more and 175% or less. If this ratio is less than 65%, the amount of paper products 11 is too small relative to the height A of the package 1, making it difficult to take out, for example, the lotion paper tissue 21 without inserting a finger inside the package 1, and making it difficult to hold the package 1 firmly. If this ratio exceeds 75%, the amount of paper products 11 is too large relative to the height A of the package 1, making it difficult to take out, for example, the lotion paper tissue 21, as it tears, and the shape of the package 1 is deformed, making it difficult to hold. The lower limit of the ratio of B to A (B / A×100(%)) is preferably 75% or more, and more preferably 85% or more. On the other hand, the upper limit is preferably 145% or less, and more preferably 120% or less.

[0026] The method for measuring A is to measure the distance between the top mountain fold and the bottom mountain fold in the direction perpendicular to the linear direction of the seal portion 13 at the center of the mountain fold 12 in the package 1 shown in Figure 3, and define the average as A. When measuring, the paper product 11 is removed from the package 1, the film packaging substrate 10 is cut, and the measurement is made with a ruler with the film packaging substrate 10 stretched.

[0027] The method for measuring B is to measure the length of paper product 11 shown in Figure 3 in a direction perpendicular to both the linear direction of sealed portion 13 and the linear direction of mountain fold portion 12, and define the average as B. When measuring, a sample paper product 11 is placed on a horizontal stand, and a 15 cm ruler is placed parallel to the short side direction at the center of the longitudinal direction of paper product 11, and the ruler is set vertically on the horizontal stand so that it is perpendicular to the 15 cm ruler (straight scale, stainless steel, 15 cm, with red numbers, JIS, 10g), and measurement is performed.

[0028] (Opening and perforations) In order to provide an opening 15 for taking out the lotion tissue paper 21, the top surface of the package 1 is provided with at least one straight perforation 14 parallel to the mountain fold line.

[0029] The perforation 14 is preferably provided so as to be located above the center of the paper product 11. This dispensing opening 15 is formed when the paper product is used by cutting the perforation 14 to open the product. As shown in Fig. 2, the lotion paper tissues 21 can be successively pulled out (removed) from the formed dispensing opening 15 to obtain the required number of lotion paper tissues 21.

[0030] (Perforation shape) The shape of the perforation 14 is linear. If the shape is linear, it is easy to open the perforation because force can be applied evenly when opening the perforation. On the other hand, if the shape is not linear, it is difficult to open the perforation 14.

[0031] (Perforation length) The lower limit of the overall length of the perforation 14 is preferably 40 mm or more, more preferably 50 mm or more, and even more preferably 60 mm or more. The upper limit is preferably 180 mm or less, more preferably 160 mm or less, and even more preferably 140 mm or less. The length direction of the single line perforation 14 is preferably parallel to the MD direction of the film packaging substrate 10.

[0032] (Length of perforation joint) The lower limit of the length of the joint of the perforation 14 is preferably 0.2 mm or more, more preferably 0.3 mm or more, and even more preferably 0.5 mm or more. Meanwhile, the upper limit is preferably 3.0 mm or less, more preferably 2.0 mm or less, and even more preferably 1.0 mm or less. If the length of the joint of the perforation 14 is less than 0.2 mm, the film packaging substrate 10 is likely to tear to a portion other than the perforation 14 when the perforation 14 is opened, making the perforation 14 difficult to open. If the length of the joint of the perforation 14 exceeds 3.0 mm, the perforation 14 becomes difficult to open.

[0033] (Length of perforation line) The length of the cut line of the perforation 14 is preferably 0.5 mm or more, more preferably 0.7 mm or more, and even more preferably 1.0 mm or more. The upper limit is preferably 4.5 mm or less, more preferably 3.5 mm or less, and even more preferably 2.5 mm or less. If the length of the cut line of the perforation 14 is less than 0.5 mm, the perforation 14 becomes difficult to open. If the length of the cut line of the perforation 14 exceeds 4.5 mm, the film is likely to tear to areas other than the perforation 14 when opening the perforation 14, making it difficult to open the perforation 14.

[0034] (Perforation bond rate) The bond rate of the perforation 14 (the proportion of the connected portion of the perforation 14) is 5% or more and 60% or less. If the bond rate is less than 5%, the end of the perforation 14 will tear, making it difficult to open the perforation 14. If the bond rate is more than 60%, the perforation 14 will be difficult to open. The lower limit of the bond rate of the perforation 14 is preferably 10% or more, and more preferably 20% or more. On the other hand, the upper limit is preferably 45% or less, and more preferably 35% or less. The length of the connected portion of the perforation 14 and the length of the cut line are measured using a microscope.

[0035] (Perforation ratio) The ratio defined by dividing the length of the perforation 14 by the length of the paper product 11 parallel to the mountain fold line and multiplying the result by 100, i.e., ((length of the perforation 14 ÷ length of the paper product 11 parallel to the mountain fold line) × 100 (%)), is 40% or more and 90% or less. If this ratio is less than 40%, the lotion paper tissue 21 will get caught on the removal opening 15 and tear, making it difficult to remove. If this ratio exceeds 90%, the removal opening 15 will open too much, causing the lotion paper tissue 21 to drop back, making it difficult to remove. The lower limit of this ratio is preferably 50% or more, and more preferably 60% or more. On the other hand, the upper limit is preferably 85% or less, and more preferably 80% or less.

[0036] (Film packaging base material) In this specification, the film packaging substrate means a packaging substrate using a film material, and the film packaging substrate 10 preferably contains at least a film and does not contain paper, and preferably has printing on the film packaging substrate 10. The basis weight value described below is a value including printing ink. The film packaging substrate 10 preferably contains 90% by weight or more of film, more preferably 95% by weight or more.

[0037] (tube film) The film packaging substrate 10 is preferably a tube-shaped substrate (i.e., when the film packaging substrate 10 includes only a film substrate, it is a tube-shaped film). A tube-shaped film is a film obtained by forming a sheet-like film into a cylindrical shape like a tube.

[0038] (Film material) The film (hereinafter also referred to as the film substrate) constituting the film packaging substrate 10 may be formed as a single layer or as a multi-layer. The material of the film is not particularly limited and may be any plastic (thermoplastic resin) film used when packaging ordinary paper products, and may be surface-treated, but from the viewpoint of aesthetics and slip resistance, a matte film is preferable. Examples of the material of the plastic film include conventionally known thermoplastic resins such as polyolefin (polyethylene, polypropylene, etc.), polyester (PET, etc.), polyamide (nylon, etc.), polycarbonate, polystyrene, polyvinyl chloride, etc., and preferably polyethylene.

[0039] Specifically, when the film substrate is formed of a single layer, the film material is preferably any one selected from textured polyethylene, milky polyethylene, linear low-density polyethylene, and non-oriented polypropylene, and when the film substrate is formed of multiple layers, the film material in the outermost layer of the film substrate is preferably any one selected from textured polyethylene, milky polyethylene, linear low-density polyethylene, and non-oriented polypropylene. The film material in the innermost layer is preferably any one selected from the above four types of materials, and the film materials in the outermost layer and the innermost layer may be the same or different. The number of layers does not include the ink layer. More preferably, the outermost layer is textured polyethylene and the innermost layer is milky polyethylene. When the outermost layer is textured polyethylene, the paper product 11 can be held firmly without slipping, making it easier to remove (use). Also, when the innermost layer is milky polyethylene, friction with the paper product 11 is small, making it easier to remove the paper product 11 from the package 1.

[0040] In addition, the method of matte-finishing the film in the matte-finish polyethylene film, which is the outermost layer of the tubular film, is not particularly limited, and can be adopted, such as a conventionally known method, a method of pressing the surface of the tubular film against an embossing roll or a matte roll to give unevenness, or a method of giving unevenness by sandblasting. These methods may be performed during the molding of the tubular film, but it is preferable to perform the method on a single layer of polyethylene to obtain a matte-finish polyethylene film and then laminate it with a milky polyethylene film or the like as the innermost layer. In addition, it is also possible to adopt, for example, a method of using a polymer blend or a method of biaxially stretching a laminate of a polyolefin resin blend without performing surface treatment as described above. In addition, it is preferable to extrusion-laminate the matte-finish film, which is the outermost layer, and the milky film, which is the innermost layer, with polyethylene to form a multilayer film.

[0041] The ash content of the packaging substrate is 1.5% or more and 12% or less. If the ash content is less than 1.5%, the strength of the film packaging substrate 10 is high, and the packaging body 1 is difficult to bend even in the areas with lines, making the shape of the packaging body 1 unstable and difficult to use (making it difficult to remove the paper product 11). If the ash content exceeds 12%, the stiffness of the packaging substrate 10 is weakened, and the packaging body 1 is easily bent even in areas other than the lines, making the shape unstable and making the packaging body 1 difficult to use (making it difficult to remove the paper product 11). The lower limit of the ash content of the packaging substrate is more preferably 2.0% or more, and even more preferably 2.5% or more. The upper limit is more preferably 10% or less, and even more preferably 8.0% or less.

[0042] Ash content refers to the percentage of minerals such as calcium, iron, sodium, magnesium, phosphorus, and potassium, and can be measured in accordance with JIS P 8251. The ash content is calculated using the following formula, but the bone dry mass of the test piece is not measured; instead, the mass of the test piece of packaging base material after conditioning it at 23°C and 50% humidity is regarded as the bone dry mass. Ash content (%) = mass of residue (g) ÷ bone dry mass of test piece (g) × 100

[0043] Furthermore, the film packaging substrate 10 of the present invention may have other layers in addition to the film substrate. Examples of the other layers include a water vapor barrier layer, an oxygen barrier layer, a print layer, a printability improving layer, an overprint layer, and a light-shielding layer. These other layers can be provided, for example, on the surface that contacts the paper product 11 or the surface that contacts the outside air, and may be one layer or two or more layers. Note that the number of layers does not include the ink layer.

[0044] (Basis weight of film packaging substrate) The basis weight of the film packaging substrate 10 is 20 g / m 2 More than 110g / m 2 The basis weight is 20 g / m 2 If the basis weight is less than 110 g / m, the strength of the film packaging substrate 10 is weak, the packaging body 1 is easily bent even in areas other than the lines, the shape is unstable, and the packaging body 1 becomes difficult to use (the paper product 11 becomes difficult to remove). 2 If it exceeds this range, the strength of the film packaging substrate 10 will be too high and the packaging body 1 will be difficult to bend even in the areas with lines, making the shape of the packaging body 1 unstable and difficult to use (making it difficult to remove the paper products 11). On the other hand, if the basis weight of the film packaging substrate 10 is within the above range, the packaging body 1 will be easily dented when the paper products 11 are reduced, that is, a packaging body 1 that is easy to remove and use even when the paper products 11 are reduced can be obtained.

[0045] The lower limit of the basis weight of the film packaging substrate 10 is 30 g / m 2 More than 40 g / m is preferable. 2 More preferably, the upper limit is 90 g / m 2 Less than 75 g / m is preferred2 The following is more preferable: The basis weight of the film packaging substrate 10 can be measured in accordance with JIS P 8124.

[0046] (Thickness of film packaging substrate) The thickness of the film packaging substrate 10 is 20 μm or more and 120 μm or less. If the thickness of the film packaging substrate 10 is less than 20 μm, the film will tear at places other than the perforation 14, making it difficult to open the perforation 14. If the thickness of the film packaging substrate 10 exceeds 120 μm, it will be difficult to open the perforation 14.

[0047] The lower limit of the thickness of the film packaging substrate 10 is preferably 30 μm or more, more preferably 40 μm or more. Meanwhile, the upper limit is preferably 100 μm or less, more preferably 90 μm or less. The thickness of the film packaging substrate 10 can be measured in accordance with JIS K7130.

[0048] (Density of film packaging substrate) The density of the film packaging substrate 10 has a lower limit of 0.70 g / cm 3 More than 0.75 g / cm is preferable. 3 More preferably, 0.80 g / cm 3 More preferably, the upper limit is 1.05 g / cm. 3 Less than 1.00 g / cm is preferred. 3 Less than 0.95 g / cm is more preferable. 3 The following is even more preferable. When the density of the film packaging substrate 10 is within the above range, the packaging body 1 becomes easy to dent when the paper products 11 are reduced, that is, the packaging body 1 can be obtained that is easy to take out and use even when the paper products 11 are reduced. The density is calculated from the basis weight and thickness of the film packaging substrate 10 described above.

[0049] (Longitudinal tear strength) The tear strength in the MD direction of the film packaging substrate 10 (longitudinal tear strength) is preferably 3 N or more and 19 N or less. If the longitudinal tear strength is less than 3 N, the film packaging substrate 10 is likely to tear at places other than the perforation 14 when the perforation 14 is opened, making it difficult to open the perforation 14. If the longitudinal tear strength exceeds 19 N, the perforation 14 is difficult to open when the perforation 14 is opened. The lower limit of the longitudinal tear strength is more preferably 5 N or more, and more preferably 8 N or more. On the other hand, the upper limit is more preferably 16 N or less, and more preferably 13 N or less.

[0050] (Transverse tear strength) The tear strength (transverse tear strength) in the CD direction of the film packaging substrate 10 is preferably 5 N or more and 27 N or less. If the transverse tear strength is less than 5 N, the film packaging substrate 10 is likely to tear at places other than the perforation 14 when the perforation 14 is opened, making it difficult to open the perforation 14. If the transverse tear strength exceeds 27 N, the perforation 14 is difficult to open when the perforation 14 is opened. The lower limit of the transverse tear strength is more preferably 7 N or more, and even more preferably 12 N or more. On the other hand, the upper limit is more preferably 22 N or less, and even more preferably 18 N or less.

[0051] The tear strength in the MD and CD directions of the film packaging substrate 10 is measured in accordance with JIS K 7128-1, and the width of the test piece is 10 mm.

[0052] (Longitudinal tensile strength) The tensile strength in the MD direction (longitudinal tensile strength) of the film packaging substrate 10 is preferably 7 N or more and 39 N or less. If the longitudinal tensile strength is less than 7 N, the film packaging substrate 10 is likely to tear at places other than the perforation 14 when the perforation 14 is opened, making it difficult to open the perforation 14. If the longitudinal tensile strength exceeds 39 N, the perforation 14 is difficult to open when the perforation 14 is opened. The lower limit of the longitudinal tensile strength is more preferably 10 N or more, and even more preferably 18 N or more. Meanwhile, the upper limit is more preferably 32 N or less, and even more preferably 26 N or less.

[0053] (Transverse tensile strength) The tensile strength (transverse tensile strength) in the CD direction of the film packaging substrate 10 is preferably 5 N or more and 30 N or less. If the tensile strength is less than 5 N, the film packaging substrate 10 is likely to tear at places other than the perforation 14 when the perforation 14 is opened, making it difficult to open the perforation 14. If the transverse tensile strength exceeds 30 N, the perforation 14 is difficult to open when the perforation 14 is opened. The lower limit of the transverse tensile strength is more preferably 8 N or more, and even more preferably 14 N or more. Meanwhile, the upper limit is more preferably 25 N or less, and even more preferably 20 N or less.

[0054] The tensile strength in the MD and CD directions of the film packaging substrate 10 is measured in accordance with JIS K 7127, and the width of the test piece is 10 mm.

[0055] (Paper products) An example of a paper product 11 packaged in the packaging 1 of the present invention is shown in FIG. 3. The packaging 1 of the present invention is particularly suitable for packaging soft paper products such as tissue paper. The type of tissue paper is not particularly limited, but examples include laminated tissue papers such as tissue paper, wipers, lotion tissue paper, and paper hand towels, and among these, a tissue paper laminate in which two plies of tissue paper are laminated is preferable. Furthermore, it is more preferable that the tissue paper is lotion tissue paper 21 in which a medical solution is impregnated into tissue paper. Since the paper product 11 is a laminate of lotion tissue paper 21, it is easy to remove the paper product 11 from the packaging 1 of the present invention even when the paper product 11 is reduced.

[0056] The lotion liquid preferably contains glycerin and silicone, and more preferably the silicone is amino-modified silicone. When the lotion liquid contains the above compounds, the paper product becomes smooth, the friction between the paper product and the opening is reduced, and the sheet does not get caught in the opening, making it easy to remove the packaged item (easy to use).

[0057] The chemical solution to be impregnated into the tissue paper is not limited to a specific type, but may be, for example, a solution of alcohol such as ethanol, which is typically used to impregnate general-purpose wet tissue, with polyhydric alcohols added in combination with the alcohol component to prevent the tissue paper from drying out. Other suitable ingredients may include emulsifiers, thickeners, pH adjusters, surfactants, stabilizers, discoloration inhibitors, fragrances, and colorants.

[0058] The lower limit of the lotion content per ply in the lotion tissue paper 21 is 2.1 g / m 2 More preferably, it is 2.4 g / m or more. 2 The upper limit is preferably 3.0 g / m or more. 2 More preferably, it is 2.7 g / m or less. 2 By setting the sheet in the above range, the paper product maintains a certain strength and the sheet does not get caught at the take-out opening and tear, making it easy to take out the packaged items (easy to use).

[0059] The lotion content in the lotion tissue paper 21 and the lotion content per ply are measured as follows. 5 g of the lotion tissue paper 21 is taken, dried in a dryer (105°C) for 120 minutes, then cooled in a desiccator for 30 minutes, and the mass is measured. The measured mass at this time is designated as M1. Next, Soxhlet extraction is performed for 4 hours using the lotion tissue paper whose mass has been measured and 150 ml of an extraction solvent (acetone:ethanol = 1:1). The obtained extract is heated and concentrated in a hot water bath, dried in a dryer (105°C) for 90 minutes, and then cooled in a desiccator for 30 minutes, and the mass is measured. The measured mass at this time is designated as M2. Then, using the two measured masses M1 and M2 obtained, M2 / M1 x 100 (%) is determined as the chemical solution content (lotion content [%]). Also, basis weight per ply x lotion content = chemical solution content (lotion content per ply) (g / m 2 )

[0060] (Paper product dimensions) The lower limit of the length of paper product 11 in the direction parallel to the linear direction of mountain fold 12 is preferably 100 mm or more, more preferably 110 mm or more, and even more preferably 120 mm or more. Meanwhile, the upper limit is preferably 200 mm or less, more preferably 180 mm or less, and even more preferably 160 mm or less. Note that length B of paper product 11 in the direction perpendicular to both the linear direction of sealed portion 13 and the linear direction of mountain fold 12 (see FIG. 3) is as described above.

[0061] (Number of paper products) When the paper products 11 are 2-ply tissue paper, the number of sets is 80 or more and 150 or less. If the number of sets is less than 80, the upper space is too large, making it necessary to insert fingers into the package 1, and it is difficult to pull out the paper products 11. If the number of sets exceeds 150, the upper space is too small, so the paper products 11 get caught on the outlet 15, perforations 14, etc., and the paper products 11 are pulled out continuously or the paper products 11 break during pulling, making it difficult to pull out. The lower limit of the number of sets is preferably 90 or more, and more preferably 100 or more. On the other hand, the upper limit is preferably 140 or less, and more preferably 130 or less.

[0062] (packaging format) The packaging form of the package 1 according to the present invention is preferably gusset packaging or pillow packaging, and more preferably gusset packaging.

[0063] Pillow packaging is a packaging format in which the film packaging substrate is overlapped at both ends in the width direction with the inner surfaces facing each other so as to encase the packaged item placed on or under a sheet-like film packaging substrate in a cylindrical shape, and the overlapped portion is formed into a cylindrical shape by heat sealing or the like, and the bottom or mouth portion is sealed in a horizontal line by heat sealing or the like to match the length (height) of the bag, and the sealed portion is cut into individual bags. This pillow packaging can be performed using known equipment.

[0064] There are two types of pillow packaging: vertical pillow packaging, in which the film packaging base is fed vertically to wrap the packaged item while filling it from above, and horizontal pillow packaging, in which the film packaging base is fed horizontally to wrap the packaged item. When packaging tissue paper, horizontal pillow packaging is preferred from the perspective of packaging speed and the shape of the tissue paper.

[0065] As shown in Fig. 3, gusset packaging is a packaging format in which a paper product 11 is inserted into the inside of a film packaging substrate 10, which is formed into a cylindrical shape with both ends of the bottom or mouth woven inward as mountain folds 12 to match the length (height) of the bag and one end sealed with a seal part 13, from an insertion opening 16, and sealed in a horizontal line by heat sealing or the like, and cut into individual bags at this sealed part. This gusset packaging can be performed using a known device. The paper product 11 may also be inserted in a state in which the film packaging substrate 10 at the insertion opening 16 is turned outward so as not to be rolled inward.

[0066] Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments. It is clear to those skilled in the art that various modifications or improvements can be made to the above embodiments. In addition, it is clear from the description of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention. EXAMPLES

[0067] The present invention will be described in detail below with reference to examples. However, the present invention is not limited to the examples shown below.

[0068] <Example 1> (Film packaging base material) A three-layered film (the outermost layer is textured polyethylene, the middle layer is polyethylene (extrusion laminate), and the innermost layer is milky white polyethylene) was prepared as a film packaging substrate and used as it is. The results of measuring the basis weight, thickness, and density of the film packaging substrate are shown in Tables 1 to 3.

[0069] (Lotion tissue paper packaging (gusset packaging)) Packaging was performed using a film with a circumference of 306 mm (front width 113 mm, fold width 20 mm each) x pitch 260 mm as the film packaging substrate. 120 lotion tissue papers coated with two plies of drug solution were placed in the film packaging substrate adjusted to the above dimensions, and sealed by gusset packaging to obtain a lotion tissue paper package with dimensions of 195 mm in the MD direction of the film packaging substrate x 120 mm in the CD direction of the film packaging substrate x 40 mm in height. The paper product was wrapped and packaged in a tube-shaped film. After the paper product was inserted, the excess in the pitch direction was cut off to produce the package.

[0070] Then, in the lotion tissue paper package, the distance A between the mountain folds in the direction perpendicular to the linear direction of the seal part at the center of the mountain folds and the height B of the paper product were measured. From the measured values ​​of A and B, B / A×100 was calculated to calculate the ratio of B to A (B / A(%)).

[0071] (Ease of removal of packaged items (ease of use of package)) The lotion tissue paper packages thus produced were opened along the perforation at the opening, and the ease of removing the lotion tissue paper from the package (ease of use of the package) was evaluated by 20 monitors. The evaluation criteria were as follows: A: 0-1 people found it difficult to remove the lotion tissue paper B: 2-3 people found it difficult to remove the lotion tissue paper C: People who found it difficult to remove the lotion tissue paper: 4-6 people D: 7-20 people who found it difficult to remove the lotion tissue

[0072] (Ease of carrying the package) The ease of carrying the lotion tissue paper packages thus produced was evaluated by 20 monitors. The evaluation criteria were as follows: A: 0-1 people found the packaging too small or too large to carry B: 2-3 people who found the packaging too small or too large to carry C: People who found the packaging too small or too large to carry (4-6 people) D: 7-20 people who found the packaging too small or too large to carry

[0073] (Ease of opening perforations when using) The lotion tissue paper packages thus produced were evaluated by 20 test subjects for ease of tearing of the perforations when pulling out the tissue. The evaluation criteria were as follows: A: 0-1 people found it difficult to open the perforations B: 2-3 people found it difficult to open the perforations C: 4-6 people found it difficult to open the perforations D: 7-20 people found it difficult to open the perforations

[0074] (Example 2) to (Example 21), (Comparative Example 1) to (Comparative Example 11) In Examples 2 to 21 and Comparative Examples 1 to 11, film packaging substrates having the physical properties shown in Tables 1 to 3 were prepared in the same manner as in Example 1. Using these, lotion tissue paper packages (gusset packaging) were prepared in the same manner as in Example 1, and the ease of removing the lotion tissue paper, the ease of holding the package, and the ease of opening the perforations during use were evaluated.

[0075] [Table 1]

[0076] [Table 2]

[0077] [Table 3]

[0078] As is clear from the results shown in Tables 1 to 3, the lotion tissue paper was easy to remove from the packages of Examples 1 to 21, the packages were easy to hold, and the perforations were easy to open when used. In contrast, the lotion tissue paper was difficult to remove from the packages of Comparative Examples 1 to 11, the packages were difficult to hold, and / or the perforations were difficult to open when used.

[0079] Therefore, even when the packaged item is a paper product, particularly a paper product such as tissue paper, the packaging of the present invention can provide a packaging for paper products that is less likely to crumble (and is easy to remove), is easy to carry, and has perforations that are easy to open. [Explanation of symbols]

[0080] 1 Packaging (packaging for paper products) 10 Film packaging substrate 11 Paper products (packaged items) 12 Mountain fold 13 Seal part 14 Perforations 15. Removal port 16 Insertion port 21 Lotion Tissue Paper

Claims

1. A package for a paper product, in which a paper product is covered with a film packaging base material having four mountain folds extending in one direction and substantially parallel to each other, and the paper product is sealed by a seal portion, Each of the mountain folds has a crease, The film packaging substrate has a basis weight of 20 g / m ２ 110g / m or more ２ and the thickness is 20 μm or more and 120 μm or less; The seal portions are provided at both ends of the mountain fold, and each seal portion is formed in a substantially straight line perpendicular to the direction of the mountain fold and substantially parallel to the mountain fold; When the distance between the mountain folds in the center of the mountain folds of the film packaging base material in a direction perpendicular to the linear direction of the sealed portion is defined as A, and the length of the paper product in a direction perpendicular to both the linear direction of the sealed portion and the linear direction of the mountain folds is defined as B, the ratio of B to A (B / A×100(%)) is 65% or more and 175% or less, The paper product is a tissue paper laminate having 80 to 150 sets of two or more plies of tissue paper laminated together, At least one or more openings having linear perforations parallel to the mountain fold lines are provided on the top surface of the package, The perforation has a bond rate of 5% to 60%, and the ratio defined by ((perforation length ÷ length parallel to the mountain fold line of the paper product) × 100 (%)) is 40% to 90%. A packaging material for paper products, comprising:

2. 2. The packaging body for paper products according to claim 1, characterized in that the longitudinal tear strength of the film packaging base material is 3 N or more and 19 N or less.

3. The packaging body for paper products according to claim 2, characterized in that the lateral tear strength of the film packaging base material is 5 N or more and 27 N or less.

4. The packaging body for paper products according to claim 3, characterized in that the longitudinal tensile strength of the film packaging base material is 7N or more and 39N or less.

5. The packaging body for paper products according to claim 4, characterized in that the lateral tensile strength of the film packaging base material is 5 N or more and 30 N or less.

6. The packaging body for paper products according to claim 5, characterized in that the film packaging substrate is a tube-type film.

7. The packaging body for paper products according to claim 5, characterized in that the packaging form using the film packaging base material is gusset packaging.

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