Package

Abstract

To improve the operational efficiency and aesthetic appeal of a package.SOLUTION: A package 1 is a package in which a paper product 11 as an object to be packaged is covered with a packaging base material 10, wherein the paper product 11 is thin paper impregnated with a chemical solution, the packaging base material 10 includes at least a film base material, a sealed portion 13 is formed at an overlapping end of the packaging base material 10, and an edge of the sealed portion 13 is cut so as to have multiple ridges 17.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging body suitable for use in packaging paper products such as tissue paper. [Background technology]

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

[0003] For example, Patent Document 1 discloses a packaging body for packaging rolled paper products, in which a gusset (or gussets) 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] In addition, while soft-pack tissue paper was often packaged in caramel packaging, which is aesthetically pleasing, or pillow packaging, which is easy to package, the use of gusset packaging has made it possible to make packaging easier while maintaining aesthetic appeal.

[0006] In gusset packaging, a clip is inserted into a tube bag, but if the tissue paper is not treated with lotion, it is difficult to slide, and the tissue paper may wrinkle when the clip is inserted. In addition, regarding the cut surface of the film, although the straight cut has good cosmetic properties, it has problems such as poor cutting ability and the tube bag being difficult to open when bagging. [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] In the process of processing the packaging film, when cutting the end of the packaging film, if a scissors blade is used in a straight cut (also called a "plain cut"), the cut edge looks good because it is straight, but there is a problem that it takes a long time to replace the blade and the blade life is not long. In addition, if the cut surface is straight, the tube bag is difficult to open when bagging, and bagging often fails. This causes a loss of packaging film and a long downtime of the machine, resulting in a lack of operability. In addition, if the packaged item is a soft tissue paper that has been treated with lotion, and the thickness of the packaging film and the height of the clip are not appropriate, the tissue paper may wrinkle during processing or the packaging film may not be cut well, resulting in a lack of aesthetic appeal. In particular, if the tissue paper is easily bent, it will easily wrinkle, resulting in a lack of aesthetic appeal.

[0009] Therefore, in one aspect, the present invention aims to provide a technique capable of improving operability and cosmetic properties. [Means for solving the problem]

[0010] In order to solve the above problems, the packaging body of the present invention is a packaging body in which a packaged item is covered with a packaging base material, the packaged item is tissue paper impregnated with a medicinal solution, the packaging format using the packaging base material is gusset packaging, the packaging base material includes at least a film base material, the thickness of the packaging base material is 20 μm or more and 130 μm or less, a seal portion is formed at the overlapping end of the packaging base material, and the edge of the seal portion is cut to have a plurality of ridges.

[0011] In the package according to the present invention, the packaging base material may be a tubular film.

[0012] In the packaging body according to the present invention, the height dimension of the ridge portion may be 0.1 mm or more and 2.0 mm or less.

[0013] In the packaging body according to the present invention, the ridge portion may have a width dimension of 2.5 mm or more and 8.0 mm or less.

[0014] The packaging body according to the present invention has a basis weight of 20 g / m 2 More than 110g / m 2 The following may be adopted.

[0015] The packaging body according to the present invention may be configured such that the film substrate included in the packaging substrate is configured with a multi-layer structure containing milky polyethylene.

[0016] The packaging body according to the present invention has a basis weight of the thin paper of 12 g / m 2 More than 20g / m 2 The following may be adopted.

[0017] The packaging body according to the present invention may be configured such that the thickness of the thin paper is 0.50 mm / 10 sheets or more and 0.90 mm / 10 sheets or less.

[0018] The packaging body according to the present invention may be configured such that the packaged item is a laminate of the tissue papers, and the height of the laminate is 15 mm or more and 110 mm or less.

[0019] The packaging body according to the present invention may be configured such that the packaged item is a laminate of 80 to 260 sets of the tissue paper.

[0020] In the packaging body according to the present invention, the film base material included in the packaging base material may be configured as a multi-layer material containing textured polyethylene.

[0021] In the packaging body according to the present invention, the packaging base material may have an ash content of 1.5% or more and 12% or less. Effect of the Invention

[0022] According to one aspect of the present invention, it is possible to improve operability and cosmetic properties. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a diagram showing an example of a packaging body of the present invention, and is a perspective view showing a state in which a paper product as a packaged item is packaged. [Diagram 2] FIG. 1 is a perspective view showing an example of a packaging body of the present invention. [Diagram 3] FIG. 1 is a perspective view showing an example of a paper product that is an item to be packaged in the packaging of the present invention. [Figure 4] FIG. 2 is a perspective view showing an example of gusset packaging of the packaging body of the present invention. [Diagram 5] FIG. 2 is a partially enlarged view of an end portion of the packaging body of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the embodiments of the present invention will be described with reference to the accompanying drawings. Note that the following embodiments are presented for illustrative purposes, and the configuration of the present invention is not limited to the contents of the following embodiments. Also, each figure is a schematic diagram for explaining the configuration of the present invention, and does not strictly define the dimensional relationship between members and each part.

[0025] In the description of the present invention, the MD direction means the direction of the production line (in other words, the conveying direction) during the production of the package, and the CD direction means the direction perpendicular to the production line direction (i.e., the MD direction) during the production of the package. Note that the line of sight along the direction perpendicular to both the MD direction and the CD direction is the plan view.

[0026] In the following embodiment, an example will be described in which the packaging body 1 packages a paper product 11 as the packaged item.

[0027] (Overall composition) Fig. 1 is a perspective view showing an example of a package 1 according to an embodiment in a state in which a paper product 11 is packaged as an item to be packaged, as an example of a specific configuration of the package according to the present invention. Fig. 2 is a perspective view showing an example of the package 1 according to an embodiment.

[0028] The packaging body 1 in the embodiment is a packaging body in which a paper product 11 as the packaged item is covered with a packaging base material 10, the paper product 11 being a tissue paper impregnated with a medicinal solution, the packaging base material 10 including at least a film base material, a sealed portion 13 being formed at the overlapping end of the packaging base material 10, and the edge of the sealed portion 13 being cut so as to have a plurality of ridges 17.

[0029] The packaging body 1 according to the embodiment covers a paper product 11 with a packaging substrate 10 having four mountain folds 12 extending in one direction (specifically, the MD direction) that are generally parallel to each other, and two valley folds 14 extending in the same direction generally parallel to the mountain folds 12, and seals the paper product 11 within the packaging substrate 10 with a sealed portion 13. Note that when sealing with the sealed portion 13, it is preferable to seal by heat sealing. Also, it is not necessarily necessary to heat seal the entire sealed portion 13, and it is not necessary to heat seal only a portion of the sealed portion 13.

[0030] The mountain folds 12 may not have any lines, but preferably have lines and are folded along the lines, similar to the valley folds 14 described below. The length of each line may be a part of the mountain folds 12, and is preferably at least 40%, more preferably at least 60%, and even more preferably at least 80%.

[0031] In addition, in Figure 1, the packaging substrate 10 in the packaging body 1 covers the entire paper product 11, but the packaging substrate 10 may cover only a part of the paper product 11 rather than the entirety, that is, the paper product 11 may not be sealed by only the packaging substrate 10.

[0032] The package 1 preferably has an opening (not shown) for removing the tissue paper that constitutes the paper product 11. This opening is preferably provided by forming a tear line, such as a perforation, in the packaging base material 10 so that the package can be opened by cutting along the tear line when in use. The tear line may be in the form of a single perforated line, for example.

[0033] The sealed portions 13 are formed at both ends of the mountain fold 12 in the MD direction, and are generally linear strips extending in a direction (specifically, the CD direction) perpendicular to the direction of the mountain fold 12, and both sealed portions 13 are formed generally parallel to each other. The sealed portions 13 are provided so as to seal the packaging substrate 10 with a seal layer (e.g., a heat seal layer). To be precise, the sealed portions 13 are formed so as to be located approximately 1 cm away from both ends of the mountain fold 12 in the MD direction.

[0034] The valley folds 14 are formed parallel to a pair of mountain folds 12 that face each other in the vertical direction. That is, the packaging substrate 10 is formed by folding two opposing side surfaces of the tubular substrate inward in the CD direction to form a gusset fold. The valley folds 14 are formed in the center or approximately in the center of the gap between the opposing mountain folds 12.

[0035] Each of the valley folds 14 preferably has a crease along which the crease is made. The length of each crease may be a part of the valley fold 14, and is preferably 30% or more, more preferably 50% or more, and even more preferably 70% or more.

[0036] Of the four faces formed by the mountain folds 12, one face that extends approximately parallel to the sealed portion 13 and does not have the valley folds 14 is defined as bottom face 15 (see FIG. 2). For the packaging substrate 10, the distance between the mountain folds 12 and the valley folds 14 that form bottom face 15 in a direction perpendicular to both the linear direction of the mountain folds 12 and the linear direction of the sealed portion 13 (specifically, the CD direction) (specifically, the vertical direction) at the center of the linear direction of the mountain folds 12 (specifically, the MD direction) is defined as A.

[0037] Furthermore, for paper product 11, the length along a direction perpendicular to both the linear direction of mountain fold 12 and the linear direction of sealed portion 13 (specifically, the vertical direction) is defined as B.

[0038] The ratio of the length B to the spacing A (i.e., B / A×100(%)) is not limited to a specific value, but the lower limit is preferably 130% or more, more preferably 150% or more, and even more preferably 170% or more, and the upper limit is preferably 350% or less, more preferably 290% or less, and even more preferably 240% or less.

[0039] If the ratio of length B to spacing A is less than 130% or exceeds 350%, the tissue paper will bend and wrinkle when processed, or the packaging film will not be able to be cut properly, resulting in a lack of aesthetic appeal. Furthermore, the two sides facing each other in the CD direction will be difficult to bend at the valley fold 14 having the lines, meaning that the packaging body 1 (packaging base material 10) will be difficult to dent, and as a result, when the paper product 11 is reduced, it will be difficult to remove the tissue paper that constitutes the paper product 11, making the packaging body 1 difficult to use.

[0040] By setting the ratio of length B to spacing A (i.e., B / A x 100(%)) within the above numerical range, the packaging base material becomes easier to open. Furthermore, because the greatest stress is applied to the center of the spacing between a pair of mountain folds 12 that face each other in the vertical direction, the valley folds 14 having lines are easier to bend, i.e., the packaging body 1 (packaging base material 10) is easier to dent. As a result, even when the paper products 11 are reduced, the tissue paper that makes up the paper products 11 becomes easier to remove, and the ease of use of the packaging body 1 is maintained.

[0041] 2, distance A may be calculated as the average of distances a1 and a2 between mountain folds 12 and valley folds 14 that form bottom surface 15 measured in a direction (specifically, vertical direction) perpendicular to both the linear direction of mountain folds 12 and the linear direction of sealed portion 13 at the center of the linear direction of mountain folds 12 (specifically, MD direction). Distances a1 and a2 between mountain folds 12 and valley folds 14 may be measured, for example, by placing a ruler against packaging substrate 10 (packaging film) in an unfolded state.

[0042] The length B along the vertical direction of the paper product 11 (laminate) may be calculated, for example, by measuring the dimensions b1 to b4 of each of the four vertical sides of the paper product 11 (laminate) shown in Fig. 3 and averaging them. Specifically, the dimensions b1 to b4 of each of the four vertical sides of the paper product 11 (laminate) shown in Fig. 3 may be measured by placing a 30 cm ruler (Shinwa Sokutei Co., Ltd., straight silver JIS Class 1, stainless steel, 64 g) on ​​the paper product 11 (laminate) along a diagonal line connecting b1 and b3 of the paper product 11 (laminate) in a plan view, and measuring the dimensions b1 and b3 of the paper product 11 (laminate), and similarly, placing a 30 cm ruler on the paper product 11 (laminate) along a diagonal line connecting b2 and b4 of the paper product 11 (laminate) in a plan view, and measuring the dimensions b2 and b4 of the paper product 11 (laminate).

[0043] The distance A between the mountain fold 12 and the valley fold 14 that form the bottom surface 15 is not limited to a specific value, but the lower limit is preferably 10 mm or more, more preferably 15 mm or more, and even more preferably 20 mm or more, and the upper limit is preferably 40 mm or less, more preferably 35 mm or less, and even more preferably 30 mm or less.

[0044] Although the height of the packaging body 1 is not limited to a specific value, the lower limit is preferably 15 mm or more, more preferably 22 mm or more, and even more preferably 30 mm or more, and the upper limit is preferably 100 mm or less, more preferably 70 mm or less, and even more preferably 45 mm or less.

[0045] The height of the packaging body 1 is calculated by measuring the height of the entire packaging body 1 at the same points as a1 and a2 in the measurement method of the distance A described above, and averaging these measurements.

[0046] If the height of the packaging body 1 is less than 15 mm, the paper product 11 does not fit well into the packaging base material 10, and the sheet becomes bent. On the other hand, if the height of the packaging body 1 exceeds 100 mm, a gap is formed between the packaging base material 10 and the paper product 11, causing the sheet to become unstable inside and shift, causing it to bend.

[0047] (Packaging base material) The packaging substrate 10 includes at least a film substrate. It is preferable that the packaging substrate 10 does not include a paper substrate. The packaging substrate 10 may be printed, and in that case, it is preferable that the printed surface is laminated. The basis weight value described below is a value including the printing ink.

[0048] The packaging substrate 10 preferably contains 90% by weight or more, more preferably 95% by weight or more, of the film substrate. More preferably, the packaging substrate 10 contains only the film substrate, that is, is a film substrate. For example, the milky white film contains ash. When the film substrate contains ash, the ash is also considered to be the film substrate.

[0049] The packaging substrate 10 is preferably tubular, and when the packaging substrate 10 is a film substrate, it is preferably a tubular film. A tubular film is a film obtained by forming a sheet-like film into a cylindrical shape like a tube.

[0050] The basis weight of the packaging substrate 10 (if the packaging substrate 10 is a film substrate, the basis weight of the film substrate) is not limited to a specific value, but the lower limit is preferably 20 g / m 2 More preferably, 50 g / m 2 More preferably, 60 g / m 2 The upper limit is preferably 110 g / m 2 Less than 80 g / m 2 Less than 70 g / m, more preferably 70 g / m 2 The basis weight of the packaging substrate 10 can be measured in accordance with JIS P 8124. The basis weight of the packaging substrate 10 is a value including the amount of ash and ink described above.

[0051] The packaging substrate 10 has a basis weight of 20 g / m 2 If the basis weight of the packaging substrate 10 is less than 110 g / m, the packaging substrate 10 becomes too thin and difficult to open when bagging (i.e., when inserting the paper product 11 into the packaging substrate 10), resulting in reduced operability. 2 If the thickness exceeds this range, the packaging substrate 10 becomes too thick and cannot be cut well, resulting in a decrease in aesthetic appeal.

[0052] The thickness of the packaging substrate 10 (when the packaging substrate 10 is a film substrate, the thickness of the film substrate) is not limited to a specific value, but the lower limit is preferably 20 μm or more, more preferably 55 μm or more, and even more preferably 69 μm or more, and the upper limit is preferably 130 μm or less, more preferably 91 μm or less, and even more preferably 83 μm or less. The thickness of the packaging substrate 10 can be measured in accordance with JIS K7130.

[0053] If the thickness of the packaging substrate 10 is less than 20 μm, the packaging substrate 10 is too thin and difficult to open when bagging (i.e., when inserting the paper product 11 into the packaging substrate 10), resulting in reduced operability. On the other hand, if the thickness of the packaging substrate 10 exceeds 130 μm, the packaging substrate 10 is too thick and difficult to cut well, resulting in reduced aesthetic appeal.

[0054] (Film substrate) The film constituting the film substrate included in the packaging substrate 10 may be composed of a single layer or multiple layers. The film constituting the film substrate included in the packaging substrate 10 preferably has a multiple layer structure, more preferably a three-layer structure.

[0055] As the film constituting the film substrate, a plastic (thermoplastic resin) film used in packaging ordinary paper products can be used without any particular limitations on the material of the film. The film constituting the film substrate may be surface-treated, and is preferably a matte film from the viewpoints of aesthetics and slip resistance.

[0056] Examples of materials for the plastic film include thermoplastic resins such as polyolefin (polyethylene, polypropylene, etc.), polyester (PET, etc.), polyamide (nylon, etc.), polycarbonate, polystyrene, and polyvinyl chloride, with polyethylene being preferred.

[0057] As a specific configuration, when the film substrate is composed of a single layer, the material of the film is preferably any one selected from the group consisting of matte polyethylene, milky polyethylene, linear low-density polyethylene, and unoriented polypropylene.

[0058] When the film substrate is composed of multiple layers, the material of the film in the outermost layer of the film substrate is not particularly limited, but is preferably any one selected from among matte polyethylene, milky polyethylene, linear low-density polyethylene, and unoriented polypropylene. The material of the film in the innermost layer is preferably any one selected from the above four types of materials. The film materials in the outermost layer and the innermost layer may be the same or different. The outermost layer of the film substrate is the layer on the outer surface side when formed into the packaging body 1, and the innermost layer of the film substrate is the layer on the inner surface side when formed into the packaging body 1, and is the layer (in other words, the surface) that comes into contact with the paper product 11 contained in the packaging body 1 (packaging substrate 10).

[0059] When the film substrate is made of multiple layers, it is more preferable that the material of the film in the outermost layer of the film substrate is a matte polyethylene, and it is more preferable that the material of the film in the innermost layer of the film substrate is a milky polyethylene, and it is preferable that the outermost layer and the innermost layer are extrusion laminated with polyethylene. By adopting such a configuration, it is possible to improve the shape of the package and the ease of folding the gusset.

[0060] If the outermost layer is made of textured polyethylene, it is moderately slippery, making bagging easy and operability stable. Also, if the innermost layer is made of milky polyethylene, friction with the paper product is small, so the sheet is less likely to bend when inserting the paper product 11 into the packaging base material 10.

[0061] The method of matte finishing the film substrate is not limited to a specific procedure or method, and may be any conventional method, such as a method of pressing the surface of the film substrate against an embossing roll or a matte roll during molding to give the film substrate an uneven surface, or a method of giving uneven surfaces by sandblasting. Alternatively, for example, a method of using a polymer blend or a method of biaxially stretching a laminate of a polyolefin resin blend may be used without performing surface processing as described above. These methods may be performed during molding of a tube-type film, but it is preferable to perform them on a single layer of polyethylene to obtain a matte polyethylene film, and then laminate it with a milky white polyethylene film or the like as the innermost layer.

[0062] When the film substrate included in the packaging substrate 10 is composed of three layers, for example, the material of the film in the outermost layer (i.e., the layer on the outer surface side when formed into the packaging body 1) of the film substrate may be matte polyethylene, the material of the film in the innermost layer (i.e., the layer on the inner surface side when formed into the packaging body 1) may be milky polyethylene, and the material of the film in the middle layer (i.e., the layer between the outermost layer and the innermost layer) may be polyethylene. Note that the number of layers does not include the ink layer.

[0063] In addition, although the ash content of the packaging substrate 10 is not limited to a specific value, the lower limit is preferably 1.5% or more, more preferably 2.0% or more, and even more preferably 2.5% or more, and the upper limit is preferably 12% or less, more preferably 10% or less, and even more preferably 8.0% or less.

[0064] Specifically, the ash content refers to the proportion 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 by the following formula, and in the explanation of the present invention, the absolute dry mass of the test piece in the formula is regarded as the mass of the test piece of the packaging substrate 10 when the test piece is conditioned at 23° C. and 50% humidity. Ash content (%) = mass of residue (g) ÷ bone dry mass of test piece (g) × 100

[0065] If the ash content of the packaging substrate 10 is less than 1.5%, the tube bag is difficult to open during bagging, resulting in frequent bagging failures. On the other hand, if the ash content of the packaging substrate 10 exceeds 12%, the stiffness of the packaging substrate weakens as the ash content increases, making it difficult to open the tube bag during bagging, resulting in frequent bagging failures.

[0066] The packaging substrate 10 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.

[0067] (Packaged item) FIG. 3 is a perspective view showing an example of a paper product 11, which is an item to be packaged in the packaging body 1 (specifically, the packaging base material 10).

[0068] The packaging body 1 is particularly suitable for packaging soft paper products such as tissue paper. The tissue paper packaged in the packaging body 1 is not limited to a specific type, but may be, for example, tissue paper, wipes, paper hand towels, etc.

[0069] The paper product 11, which is the packaged item packed in the packaging body 1, is a thin paper impregnated with a medicinal solution, and more specifically, is a laminate of thin papers impregnated with a medicinal solution. The paper product 11, which is the packaged item packed in the packaging body 1, is preferably a lotion tissue paper laminate of tissue papers impregnated with lotion as the medicinal solution.

[0070] The basis weight of the thin paper (e.g., one ply of lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is not limited to a specific value, but the lower limit is preferably 12 g / m 2 More preferably, 14 g / m 2 More preferably, 15 g / m 2The upper limit is preferably 20 g / m 2 Less than 19g / m 2 Less than 18 g / m, more preferably 18 g / m 2 The basis weight of the thin paper can be measured in accordance with JIS P 8124. The basis weight of the thin paper is measured after it is kept in equilibrium under temperature and humidity conditions specified in JIS P 8111 (specifically, 23±1°C, 50±2% RH).

[0071] The basis weight of the thin paper (for example, one ply of lotion tissue paper) constituting the paper product 11, which is the packaged item to be packaged in the package 1, is 12 g / m 2 If the thickness is less than 20 g / m, the tissue paper will feel thin and flimsy, and the sheet will be easily folded. On the other hand, if the basis weight of the tissue paper constituting the paper product 11, which is the packaged item packaged in the package 1 (for example, one ply of lotion tissue paper), is 20 g / m 2 If the thickness exceeds this value, the packaging will be too tight and the paper product 11 will be easily bent when inserted into the packaging base material 10.

[0072] The thickness of the thin paper (e.g., lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is not limited to a specific value, but the lower limit is preferably 0.50 [mm / 10 sheets] or more, more preferably 0.55 [mm / 10 sheets] or more, even more preferably 0.60 [mm / 10 sheets] or more, and the upper limit is preferably 0.90 [mm / 10 sheets] or less, more preferably 0.82 [mm / 10 sheets] or less, even more preferably 0.75 [mm / 10 sheets] or less. Note that when the thin paper is a 2-ply tissue paper, 5 sets of 2 plies correspond to 10 sheets.

[0073] The thickness of tissue paper (e.g., lotion tissue paper) can be measured, for example, using a thickness gauge (dial thickness gauge "PEACOCK" manufactured by Ozaki Manufacturing Co., Ltd.). Specifically, for example, the measurement conditions are a measurement load of 3.7 kPa and a gauge diameter of 30 mm, a sample is placed between the gauge and the measurement table, and the gauge is read when the gauge is lowered at a speed of 1 mm or less per second. The measurement is repeated 10 times (note that the same place is not measured 10 times, but 10 different places are measured), and the average of the measurement results is taken as the final paper thickness. In addition, the thickness of tissue paper is measured after being kept in equilibrium under temperature and humidity conditions specified in JIS P 8111 (specifically, 23±1°C, 50±2% RH).

[0074] If the thickness of the tissue paper (e.g., lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is less than 0.50 [mm / 10 sheets], the tissue paper will be thin and flimsy to the touch, and the sheet will be easily folded. On the other hand, if the thickness of the tissue paper (e.g., lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is more than 0.90 [mm / 10 sheets], the packaging will be tight, and the sheet will be easily folded when the paper product 11 is inserted into the packaging base material 10.

[0075] The specific volume of the tissue paper (e.g., one ply of lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is not limited to a specific value, but the lower limit is preferably 3.0 cm 3 / g or more, more preferably 3.3 cm 3 / g or more, more preferably 3.6 cm 3 / g or more, and the upper limit is preferably 5.7 cm 3 / g or less, more preferably 5.2 cm 3 / g or less, more preferably 4.5 cm 3 The specific volume is calculated by dividing the thickness of the thin paper (e.g., one ply of lotion tissue paper) by the basis weight of the thin paper (e.g., one ply of lotion tissue paper), and expressing the volume cm per unit g.3 This is expressed as:

[0076] The specific volume of the tissue paper (for example, one ply of lotion tissue paper) constituting the paper product 11, which is the packaged item packaged in the package 1, is 3.0 cm 3 If the specific volume of the thin paper constituting the paper product 11, which is the packaged article to be packaged in the package 1 (for example, one ply of lotion tissue paper), is less than 5.7 cm3 / g, the package will not be tight and the sheet will be easily bent. 3 If the hardness exceeds 1 / g, the tissue paper becomes porous and the sheet becomes easily bent.

[0077] The paper product 11, which is the packaged item to be packaged in the packaging body 1, is preferably a laminate of tissue paper in which tissue paper is laminated. Specifically, the paper product 11, which is the packaged item to be packaged in the packaging body 1, is preferably a tissue paper laminate in which two plies of tissue paper are laminated. Also, the tissue paper is preferably lotion tissue paper in which lotion is impregnated into the tissue paper as a medicinal solution. Therefore, the paper product 11, which is the packaged item to be packaged in the packaging body 1, is preferably a lotion tissue paper laminate in which two plies of lotion tissue paper are laminated. By the paper product 11 being a lotion tissue paper laminate, the paper product 11 becomes smooth, making it easier to insert the paper product 11 into the packaging base material 10, and the tissue paper does not bend and is less likely to wrinkle.

[0078] The chemical liquid to be impregnated into the tissue paper is not limited to a specific type, but may include, for example, lotion or alcohol, which is typically used to impregnate general-purpose wet tissue. The lotion-based chemical liquid preferably contains glycerin and silicone, and the silicone is more preferably amino-modified silicone. When the lotion-based chemical liquid contains the above-mentioned compound, the paper product 11 (laminate) becomes smooth, and the paper product 11 (laminate) is less likely to wrinkle or fold during packaging. The alcohol-based chemical liquid is mainly composed of an alcohol aqueous solution such as ethanol, and polyhydric alcohols may be blended in combination with the alcohol component to prevent the tissue paper from drying. In addition, emulsifiers, thickeners, pH adjusters, surfactants, stabilizers, discoloration inhibitors, fragrances, colorants, and the like may be appropriately blended.

[0079] The lower limit of the lotion content per ply in the lotion tissue paper is preferably 2.1 g / m 2 More preferably, 2.4 g / m 2 The upper limit is preferably 3.0 g / m 2 Less than or equal to 2.7 g / m 2 The following is the result.

[0080] The lotion content in the lotion tissue paper and the lotion content per ply are measured as follows. 5 g of lotion tissue paper is collected, 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 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 )

[0081] When the paper product 11 is a laminate of tissue paper (e.g., two-ply lotion tissue paper), the number of pairs of tissue paper is not limited to a specific value, but the lower limit is preferably 80 pairs or more, more preferably 100 pairs or more, and even more preferably 110 pairs or more, and the upper limit is preferably 260 pairs or less, more preferably 200 pairs or less, and even more preferably 130 pairs or less.

[0082] When the paper product 11 is a laminate of tissue papers (e.g., two-ply lotion tissue paper), if the number of sets of tissue papers is less than 80, gaps will be created between the packaging base material 10 and the paper product 11 inside the package 1 (i.e., above the paper product 11), and the paper product 11 will become unstable and shift inside the package 1 (packaging base material 10), causing the tissue paper to bend and reducing aesthetic appeal. On the other hand, when the paper product 11 is a laminate of tissue papers, if the number of sets of tissue papers exceeds 260, the paper product 11 will not fit properly when bagging (i.e., when inserting the paper product 11 into the packaging base material 10), causing the tissue paper to bend and reducing aesthetic appeal.

[0083] The method for folding and stacking the tissue paper is not limited to a specific procedure or method, but for example, a rotary interfolder (IF) may be used, or a multi-stand interfolder (MF) may be used.

[0084] The height of the clips (i.e., a stack of tissue paper before being inserted into the packaging substrate 10; in the embodiment, the paper product 11 before being inserted into the packaging substrate 10; for example, a stack of lotion tissue paper before being inserted into the packaging substrate 10) as the packaged item packaged in the packaging body 1 is not limited to a specific value, but the lower limit is preferably 15 mm or more, more preferably 22 mm or more, and even more preferably 30 mm or more, and the upper limit is preferably 110 mm or less, more preferably 70 mm or less, and even more preferably 45 mm or less.

[0085] The height of the clip as the packaged item to be packaged in the packaging body 1 is length B along a direction (specifically, a vertical direction) perpendicular to both the linear direction of the mountain fold portion 12 and the linear direction of the sealed portion 13 of the paper product 11 described above.

[0086] If the height of the clip as the packaged item packaged in the packaging 1 is less than 15 mm, a gap will be created between the packaging base material 10 and the paper product 11 inside the packaging 1 (i.e., above the paper product 11), and the paper product 11 will become unstable and shift inside the packaging 1 (packaging base material 10), causing the tissue paper to bend and reducing aesthetic appeal. On the other hand, if the height of the clip as the packaged item packaged in the packaging 1 exceeds 110 mm, it will not fit properly when bagging (i.e., when inserting the clip (paper product 11) into the packaging base material 10), causing the tissue paper to bend and reducing aesthetic appeal.

[0087] (packaging format) The packaging form of the packaging body 1 is preferably a gusset package or a pillow package, and more preferably a gusset package.

[0088] In gusset packaging, a pair of mountain folds 12 and a valley fold 14 between the pair of mountain folds 12 are formed on each of two mutually opposing side surfaces in the CD direction of the tubular packaging substrate 10, and the two side surfaces are folded inward toward each other, and the packaging substrate 10 is wound in a roll-like original sheet of the packaging substrate 10. The packaging substrate 10 is then fed out and cut according to the length (in other words, the height) of the bag in the MD direction. At this time, in the present invention, as described below, the packaging substrate 10 is cut so that both ends in the MD direction have a plurality of mountain portions 17 and valley portions 18 that are mutually connected and adjacent to each other alternately.

[0089] Then, one end in the MD direction is joined (in other words, sealed) by forming a seal part 13 by heat sealing or the like in a horizontal line along the width direction (specifically, CD direction), and a bag is produced in which only the other end in the MD direction is open. The other end of the bag in the MD direction is opened to form an insertion opening 16, and as shown in Fig. 4, the packaged item (specifically, paper product 11) is inserted into the inside of the packaging base material 10 from the insertion opening 16, and the insertion opening 16 is closed, and the seal part 13 is joined (in other words, sealed) by forming a seal part 13 by heat sealing or the like in a horizontal line along the width direction (specifically, CD direction).

[0090] In pillow packaging, the packaging substrate is overlapped at both ends in the width direction (specifically, CD direction) with the inner faces facing each other so as to encase the packaged item placed on or below the sheet-like packaging substrate in a cylindrical shape, and this overlapped portion is formed into a cylindrical shape by heat sealing, etc. Then, the bottom or mouth portion is sealed horizontally along the width direction (specifically, CD direction) by heat sealing, etc., according to the length of the bag in the MD direction (in other words, the height), and this sealed portion is cut into individual bags.

[0091] There are two types of pillow packaging: vertical pillow packaging, in which the packaging base is fed vertically and the packaged item is filled from above while being wrapped, and horizontal pillow packaging, in which the packaging base is fed horizontally and the packaged item is wrapped. When packaging tissue paper, horizontal pillow packaging is preferred, taking into account the packaging speed and the shape of the tissue paper.

[0092] (Sealing part) A seal portion 13 is formed at an end portion in the MD direction of the packaging base material 10 so as to seal the packaging base material 10 that has been overlapped and closed together.

[0093] The packaging substrate 10 is cut (also referred to as a "jagged cut") at the end in the MD direction (specifically, the edge in the MD direction of the sealed portion 13) so as to have a plurality of peaks 17 and valleys 18 that are interconnected and adjacent to each other in an alternating manner.

[0094] Fig. 5 is a partially enlarged view of the end portion in the MD direction of the packaging body 1, specifically showing the state of the peaks 17 and valleys 18 provided in the seal portion 13 of the packaging base material 10. In Fig. 5, the portion corresponding to the peaks 17 is shown shaded.

[0095] The number of peaks 17 and valleys 18 provided in the seal portion 13 per 10 cm in the longitudinal direction of the seal portion 13 (i.e., the CD direction of the packaging substrate) is not limited to a specific value, but the lower limit for each of the peaks 17 and valleys 18 is preferably 5 peaks / 10 cm or more, more preferably 10 peaks / 10 cm or more, and even more preferably 15 peaks / 10 cm or more, and the upper limit is preferably 40 peaks / 10 cm or less, more preferably 35 peaks / 10 cm or less, and even more preferably 30 peaks / 10 cm or less.

[0096] The series of alternating adjacent peaks 17 and valleys 18 is preferably provided over 50% or more of the total length along the longitudinal direction of the seal portion 13 (i.e., the CD direction of the packaging substrate), more preferably over 70%, and even more preferably over 100% (i.e., the entire length).

[0097] The peaks 17 and valleys 18 provided in the seal portion 13 may each be triangular (or approximately triangular) in plan view, with the apex angles inverted in the MD direction and alternately adjacent in the CD direction, forming a sawtooth shape (or approximately sawtooth shape; in other words, jagged), or may be wavy (or approximately wavy) with rounded corners. The effects of the present invention are the same whether the peaks 17 and valleys 18 provided in the seal portion 13 have a sawtooth (or approximately sawtooth) shape or a wavy (or approximately wavy) shape in plan view.

[0098] The height dimension H of the peaks 17 provided in the sealed portion 13 is not limited to a specific value, but the lower limit is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.3 mm or more, and the upper limit is preferably 2.0 mm or less, more preferably 1.3 mm or less, and even more preferably 0.6 mm or less. The height dimension H of the peaks 17 is the dimension between the bottom of the valleys 18 and the apex of the peaks 17 (specifically, the dimension along the MD direction of the packaging substrate), and also corresponds to the depth dimension of the valleys 18. The height dimension H of the peaks 17 may be, for example, a value measured for the peaks 17 located at the center in the longitudinal direction among the multiple peaks 17 arranged along the longitudinal direction of the sealed portion 13 (i.e., the CD direction of the packaging substrate).

[0099] If the height dimension H of the ridges 17 in the sealed portion 13 (and the depth dimension of the valleys 18) is less than 0.1 mm, the degree of convexity of the ridges 17 (and the degree of concavity of the valleys 18) will be very slight and the cut surface will be approximately straight, making it difficult to open the packaging substrate 10 when bagging (i.e., when inserting the paper product 11 into the packaging substrate 10), reducing operability. On the other hand, if the height dimension H of the ridges 17 in the sealed portion 13 (and the depth dimension of the valleys 18) exceeds 2.0 mm, the amount of protrusion of the ridges 17 will be extremely large, making the appearance poor and reducing aesthetic appeal.

[0100] The width dimension W of the ridges 17 provided in the seal portion 13 is not limited to a specific value, but the lower limit is preferably 2.5 mm or more, more preferably 3.2 mm or more, and even more preferably 4.0 mm or more, and the upper limit is preferably 8.0 mm or less, more preferably 7.1 mm or less, and even more preferably 6.0 mm or less. The width dimension W of the ridges 17 is the dimension between the bottoms of adjacent valleys 18 (specifically, the dimension along the CD direction), and corresponds to the distance between the valleys 18 and also corresponds to the width dimension of the valleys 18.

[0101] If the width dimension W of the ridges 17 (also, the interval between the valleys 18, the width dimension of the valleys 18) provided in the sealed portion 13 is less than 2.5 mm, the ridges 17 and valleys 18 become extremely fine, which makes the appearance complicated and reduces the aesthetic appeal. On the other hand, if the width dimension W of the ridges 17 (also, the interval between the valleys 18, the width dimension of the valleys 18) provided in the sealed portion 13 exceeds 8.0 mm, the undulations of the connection between the ridges 17 and valleys 18 become gentler and the cut surface becomes closer to a straight line, so that the packaging substrate 10 becomes difficult to open when bagging (i.e., when inserting the paper product 11 into the packaging substrate 10), and the operability decreases. In addition, the width dimension W of the ridges 17 may be, for example, a value measured for the ridges 17 located at the center in the longitudinal direction of the sealed portion 13 among the multiple ridges 17 arranged along the longitudinal direction (i.e., the CD direction of the packaging substrate).

[0102] In the present invention, when the packaging substrate 10 is fed from the roll-shaped original sheet of packaging substrate 10 and cut to match the length of the bag in the MD direction, both ends of the packaging substrate 10 in the MD direction are cut so as to have a plurality of peaks 17 and valleys 18 that are connected to each other and adjacent to each other alternately, and further, when the paper product 11 is inserted inside the packaging substrate 10 and sealed, a sealed portion 13 is formed and the edge of the sealed portion 13 is cut so as to have a plurality of peaks 17 and valleys 18 that are connected to each other and adjacent to each other alternately. EXAMPLES

[0103] Examples of the present invention will be described below. Note that the following examples are presented for illustrative purposes, and the configuration of the present invention is not limited to the contents of the following examples.

[0104] A tissue paper package was produced as an example of a specific configuration of the package according to the present invention using members having the physical properties, specifications, and specifications shown in Tables 1 to 4 below, and three items, namely, ease of opening the packaging substrate when bagging as a measure of operability, absence of wrinkles in the tissue paper as a measure of aesthetics, and cleanliness of the cut surface of the packaging substrate as a measure of aesthetics, were evaluated using a score of 1 to 5 points for each item. Specifically, a particularly good or particularly excellent condition was given a score of 5 points, followed by 4 points, 3 points, and 2 points, in that order. A score of 1 corresponds to a failure that does not meet the standards for a commercially available product.

[0105] Evaluation point 1: Ease of opening packaging material (operability) The packaging base material was evaluated for ease of opening, according to the following criteria: 5 points: The packaging base material opened without difficulty during packaging, and packaging went smoothly. 4 points: The packaging base was a little difficult to open during packaging, but the packaging went smoothly. 3 points: The packaging base was a little difficult to open during packaging, but packaging was possible. 2 points: The packaging base material was difficult to open during packaging, but this was not a problem. 1 point: The packaging base could not be opened during packaging, making it impossible to package the item.

[0106] Evaluation point 2: Freeness of wrinkles in tissue paper (beauty) The cosmetic properties of the tissue paper packages thus produced were evaluated, including the presence or absence of wrinkles. Specifically, in this example, a sensory evaluation was conducted by 30 monitors, who selected "excellent cosmetic properties" or "poor cosmetic properties" for the cosmetic properties of the tissue paper. The cosmetic properties were scored according to the following criteria: 5 points: 29 or more monitors rated the product as having excellent cosmetic properties 4 points: 27 to 28 monitors rated the product as "excellent cosmetic quality" 3 points: 25 to 26 monitors rated the product as "excellent cosmetic quality" 2 points: 22 to 24 monitors rated the product as "excellent cosmetic quality" 1 point: 21 or fewer monitors rated the product as "excellent cosmetic quality"

[0107] Evaluation point 3: Cleanliness of the cut surface of the packaging base material (cosmetic quality) The cut surface of the packaging base material was evaluated for its cosmetic appearance. Specifically, in this example, a sensory evaluation was conducted by 30 monitors, who selected "excellent cosmetic appearance" or "poor cosmetic appearance" for the cosmetic appearance of the cut surface. The evaluation was scored according to the following criteria. 5 points: 29 or more monitors rated the product as having excellent cosmetic properties 4 points: 27 to 28 monitors rated the product as "excellent cosmetic quality" 3 points: 25 to 26 monitors rated the product as "excellent cosmetic quality" 2 points: 22 to 24 monitors rated the product as "excellent cosmetic quality" 1 point: 21 or fewer monitors rated the product as "excellent cosmetic quality"

[0108] (Packaged item) As the packaged items (specifically, paper products), several kinds of tissue paper with different basis weights, paper thicknesses, and specific volumes were used as thin papers, and two-ply tissue paper laminates were produced and used. The measurement and calculation results of the basis weight (per ply), paper thickness, and specific volume of each of the several kinds of tissue paper (note that if the tissue paper is impregnated with a drug solution, it is lotion tissue paper) (in other words, of each tissue paper in the examples and comparative examples) are shown in Tables 1 to 4.

[0109] The number of pairs of two-ply tissue paper that constitute the tissue paper laminate as the packaged item (paper product) ranges from 50 pairs to 320 pairs, and the height of the clip ranges from 10 mm to 130 mm.

[0110] As tissue papers constituting a laminate of tissue papers as the packaged item (paper product), tissue papers with lotion (i.e., tissue papers impregnated with a drug solution) and tissue papers without lotion were used.

[0111] (Packaging base material) As the packaging substrate, several kinds of film substrates with different basis weights and thicknesses were used. The measurement results of the basis weight and thickness of each of the several kinds of film substrates (in other words, each of the film substrates of the Examples and Comparative Examples) are as shown in Tables 1 to 4.

[0112] Regarding the film substrate as the packaging substrate, a two-layer structure, a three-layer structure, and a four-layer structure were used.

[0113] The two-layered film substrate used as the packaging substrate has a film material of matte polyethylene on the outermost layer and a film material of transparent polyethylene on the innermost layer (ie, the surface that comes into contact with the tissue paper).

[0114] The three-layered film substrate used as the packaging substrate has a film material of matte polyethylene in the outermost layer, a film material of polyethylene in the middle layer, and a film material of milky polyethylene in the innermost layer (i.e., the surface that comes into contact with the tissue paper).

[0115] The four-layer film substrate used as a packaging substrate has a film material of matte polyethylene in the outermost layer, a film material of polyethylene in the middle layer on the outermost layer side, a film material of polyethylene in the middle layer on the innermost layer side, and a film material of milky polyethylene in the innermost layer (i.e., the surface that comes into contact with the tissue paper).

[0116] The height of the ridges (and the depth of the valleys) provided on the seal portion of the packaging base material ranges from 0.0 mm to 3.0 mm, and the width of the ridges (and the distance between the valleys and the width of the valleys) ranges from 0.0 mm to 10.2 mm. When the height and width of the ridges are 0.0 mm, the cut surface of the seal portion is straight.

[0117] Regarding the packaging format of the package, gusset packaging and pillow packaging were used.

[0118] (Tissue paper packaging) Packaging was performed using a film substrate with a circumference of 306 mm (front width 113 mm, fold width 20 mm each) and pitch of 260 mm. The film substrate adjusted to the above dimensions was used to produce a package with dimensions of 195 mm along the MD direction of the film substrate, 120 mm along the CD direction, and 45 mm in height (i.e., vertical dimension). A two-ply tissue paper laminate was then placed in this package (film substrate) as the packaged item (paper product) to produce a tissue paper package.

[0119] For each of Examples 1 to 18 and Comparative Examples 1 to 8, the physical properties, specifications, and specifications of the tissue paper constituting the packaged item (paper product), as well as the physical properties, specifications, and specifications of the film substrate as the packaging substrate, and the evaluation results are shown in Tables 1 to 4.

[0120] [Table 1]

[0121] [Table 2]

[0122] [Table 3]

[0123] [Table 4]

[0124] From the results shown in Tables 1 to 4, it was confirmed that none of the packages of Examples 1 to 18 received a score of 1 (i.e., a failure) in any of the three evaluation criteria, the packaging base material was easy to open when bagging, there were no wrinkles in the tissue paper, and the cut surface of the packaging base material was neat and clean.

[0125] In contrast, all of the packages of Comparative Examples 1 to 8 received at least one score of 1 (i.e., failure) in each of the three evaluation criteria, and it was confirmed that the packaging base material was difficult to open when bagging, the tissue paper was wrinkled, and the cut surface of the packaging base material was not uniform.

[0126] From the results shown in Tables 1 to 4, it was confirmed that by forming packages as in Examples 1 to 18, particularly good packages according to the present invention could be obtained.

[0127] (Action and effect) According to the packaging body 1 of the embodiment, in the process of processing the packaging substrate 10 (film substrate), a serrated blade is used instead of a scissor blade when cutting the edge of the packaging substrate 10, which shortens the time and frequency of blade replacement, thereby improving operability.

[0128] According to the packaging body 1 of the embodiment, the cut surface of the sealed portion is made sawtooth (in other words, jagged) or wavy, so that the packaging base material 10 is easy to open and bagging can be easily and reliably performed, thereby improving operability.

[0129] According to the packaging body 1 of the embodiment, making the packaging base material 10 thicker prevents the tissue paper from wrinkling or bending when a laminate of tissue paper is inserted as the packaged item, but the thickness makes it more difficult to cut. However, in the process of processing the packaging base material 10 (film base material), when cutting the edges of the packaging base material 10, a serrated blade that is easier to cut than a scissors blade is used, so it is possible to improve the aesthetic quality of the cut surface of the film and increase the film yield.

[0130] According to the packaging body 1 of the embodiment, by specifying the basis weight of the packaging substrate 10 (film substrate) within an appropriate range, it is possible to improve the workability and also improve the cosmetic appearance.

[0131] The above describes an embodiment of the present invention, but the specific configuration of the present invention is not limited to the above embodiment, and the present invention also includes embodiments in which modifications and changes are made to the above embodiment without departing from the gist of the present invention. [Explanation of symbols]

[0132] 1 package 10 Packaging base material 11 Paper products (packaged items) 12 Mountain fold 13 Seal part 14 Valley fold 15 Bottom 16 Insertion port 17 Yamabe 18 Valley

Claims

1. A packaging body in which the packaged item is covered with a packaging base material, The packaged item is a tissue paper impregnated with a drug solution, The packaging form of the packaging base material is gusset packaging, The packaging substrate includes at least a film substrate, The thickness of the packaging substrate is 20 μm or more and 130 μm or less, A seal portion is formed at the overlapping end of the packaging base material, The edge of the seal portion is cut to have a plurality of ridges. A package comprising:

2. The packaging substrate is a tubular film.

2. The package according to claim 1.

3. The height dimension of the ridge portion is 0.1 mm or more and 2.0 mm or less.

2. The package according to claim 1.

4. The width dimension of the ridge portion is 2.5 mm or more and 8.0 mm or less.

2. The package according to claim 1.

5. The packaging substrate has a basis weight of 20 g / m ２ 110g / m or more ２ Below is the 2. The package according to claim 1.

6. The film substrate contained in the packaging substrate is composed of a multi-layer including milky polyethylene.

2. The package according to claim 1.

7. The tissue paper has a basis weight of 12 g / m ２ 20g / m or more ２ Below is the 2. The package according to claim 1.

8. The thickness of the thin paper is 0.50 [mm / 10 sheets] or more and 0.90 [mm / 10 sheets] or less, 2. The package according to claim 1.

9. The packaged item is a laminate of the tissue paper, and the height of the laminate is 15 mm or more and 110 mm or less.

2. The package according to claim 1.

10. The packaged item is a laminate of 80 to 260 sets of the tissue paper.

2. The package according to claim 1.

11. The film substrate included in the packaging substrate is composed of a multi-layer including a matte polyethylene.

2. The package according to claim 1.

12. The ash content of the packaging base material is 1.5% or more and 12% or less; 2. The package according to claim 1.

Images