Sanitary paper packaging

Abstract

To provide a sanitary tissue paper package body which can be made compact by compression-packaging sanitary tissue paper within a range not impairing quality of a product.SOLUTION: A sanitary tissue paper package 10 according to the present disclosure is a sanitary tissue paper package 10 in which a sanitary tissue paper laminate 11 is packaged with a film packaging material 12. Thickness of the film packaging material 12 is 10 μm or more and 80 μm or less, and density of the laminate 11 is 0.3 g / cm3 or more and 0.8 g / cm3 or less, and pressure in the packaging is 2000 Pa or more and less than 3000 Pa.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This disclosure relates to a sanitary tissue packaging in which a laminate of refillable sanitary tissue is packaged in a compressed state. [Background technology]

[0002] To compactly package sanitary tissue paper such as hand towels, the laminated material is compressed using a pull belt or similar device at the exit of the folding machine. In this case, the degree of compression is adjusted by adjusting the pressure of the pull belt, but if the compression is too strong, the sanitary tissue paper may tear, so there is a limit to how much compression is possible.

[0003] Furthermore, some products that can be dispensed in a pop-up manner, such as tissue paper and kitchen paper, are packaged in a vacuum-sealed state. For example, Patent Document 1 describes a pop-up type sanitary tissue paper product that does not require a storage box. This sanitary tissue paper is sealed with an outer film, and the air pressure inside the packaging is 3000 to 16000 Pa. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Patent No. 5478092 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] Incidentally, there are refillable tissue paper packaging packages that differ in their appropriate degree of compression from the pop-up type packaging packages. For refillable tissue paper packaging packages, there is a demand for packaging packages that are even more compactly compressed than the pop-up type packaging packages.

[0006] However, depending on the strength of compression of the sanitary tissue paper, wrinkles or sagging may appear on the surface of the package, which may reduce the appearance quality of the product. In addition, the quality of the product content (the laminate of sanitary tissue paper) may deteriorate, such as the collapse of the internal laminate of sanitary tissue paper.

[0007] Therefore, an object of the present disclosure is to provide a sanitary tissue paper package that can compress and package the sanitary tissue paper to make it compact without impairing the quality of the product.

Means for Solving the Problems

[0008] To solve the above problems, a first aspect of the present invention is a sanitary tissue paper package in which a laminate of sanitary tissue paper is packaged with a film packaging material, wherein the thickness of the film packaging material is 10 μm or more and 80 μm or less, and the density of the laminate is 0.3 g / cm 3 or more and 0.8 g / cm 3 or less, and the pressure inside the package is 2000 Pa or more and less than 3000 Pa.

[0009] A second aspect of the present invention is the sanitary tissue paper package according to the first aspect, wherein the laminate is formed by folding and laminating the sanitary tissue paper with a set of two-ply sheets, and the number of sets of the sanitary tissue paper in the laminate is 100 sets or more and 2000 sets or less.

[0010] A third aspect of the present invention is the sanitary tissue paper package according to the first aspect or the second aspect, wherein the perimeter of the film packaging material in the corresponding direction is -100 mm or more and +200 mm or less with respect to the perimeter of the laminate in the non-packaged state with the axis in the direction crossing the lamination direction of the sanitary tissue paper.

[0011] A fourth aspect of the present invention is the sanitary tissue paper package according to any one of the first aspect to the third aspect, wherein the material of the film packaging material is a nylon-based resin.

Effects of the Invention

[0012] According to this disclosure, the sanitary tissue paper packaging can be made more compact by deaerating the tissue paper without compromising the quality of the product. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of a sanitary tissue paper packaging according to one embodiment of the present invention. [Figure 2] This is an explanatory diagram illustrating the dimensions of the laminate and the film packaging material, where (a) shows the laminate in its unpackaged state and (b) shows the film packaging material in its unpackaged state. [Figure 3] This is an explanatory diagram illustrating the dimensions of the laminate and film packaging material in a different orientation than that shown in Figure 2, where (a) shows the laminate in its unpackaged state and (b) shows the film packaging material in its unpackaged state. [Figure 4] This is a perspective view showing a modified example of packaging for a sanitary tissue paper packaging. [Figure 5] This is a perspective view showing a modified example of the laminated material that is the contents of a sanitary tissue paper packaging. [Modes for carrying out the invention]

[0014] Hereinafter, one embodiment of the present invention will be described with reference to the drawings, but these are provided for illustrative purposes only and do not limit the present invention. The term "packaged state" means a state in which the laminate of sanitary tissue paper 11 is covered with a film packaging material 12, the inside of the packaging is de-aerated and the laminate 11 is sealed, and the term "unpackaged state" means a state in which the laminate of sanitary tissue paper 11 is not covered with the film packaging material 12. Furthermore, "sealed" means to seal it so that there are no gaps, regardless of the subsequent state (for example, whether or not air enters due to long-term storage).

[0015] Figure 1 is a perspective view of a sanitary tissue paper packaging 10 according to one embodiment of the present invention.

[0016] As shown in Fig. 1, the sanitary tissue paper package 10 according to this embodiment is a refill sanitary tissue paper package for packaging sanitary tissue paper to replenish an empty dispenser (not shown) or the like. The entire laminate 11 of sanitary tissue paper (hereinafter sometimes simply referred to as "laminate 11") is covered with a film packaging material 12, and the laminate 11 is sealed by at least one seal portion 13 in a degassed state.

[0017] Examples of the sanitary tissue paper include tissue paper, paper towels such as hand towels, table napkins, kitchen paper, kitchen towels, and wipes made of paper or non-woven fabric. The sanitary tissue paper is not particularly limited as long as it is made of paper, natural fiber, synthetic fiber, etc. For example, non-woven fabrics such as melt-blown non-woven fabric, spunlace non-woven fabric, and spunlace non-woven fabric, and composite non-woven fabrics obtained by laminating these can be mentioned.

[0018] When the sanitary tissue paper is tissue paper, its basis weight (basis weight of one ply in a two-ply product) is preferably 9 g / m 2 or more and 17 g / m 2 or less, more preferably 9 g / m 2 or more and 15 g / m 2 or less, and still more preferably 10 g / m 2 or more and 13 g / m 2 or less. When the sanitary tissue paper is a hand towel, its basis weight (basis weight of one ply in a two-ply product) is preferably 14 g / m 2 or more and 26 g / m 2 or less, more preferably 16 g / m 2 or more and 24 g / m 2 or less, and still more preferably 18 g / m 2 or more and 22 g / m 2 or less.

[0019] For sanitary tissue paper, the geometric mean tensile strength (GMT) of the dry machine direction tensile strength (DMD) and dry cross direction tensile strength (DCD) is preferably 1N / 25mm to 5N / 25mm, more preferably 1.3N / 25mm to 4.5N / 25mm, and even more preferably 1.6N / 25mm to 4.0N / 25mm for tissue paper. For hand towels, it is preferably 5N / 25mm to 30N / 25mm, more preferably 7N / 25mm to 22N / 25mm, and even more preferably 9N / 25mm to 18N / 25mm. By setting the GMT within the above range, the sanitary tissue paper sheet becomes less prone to warping when packaged and retains sufficient softness. It also becomes appropriately tear-resistant for practical use. Furthermore, the tensile strength can be measured in accordance with JIS P 8113. The tensile strength measurement is performed after the sanitary tissue paper is held in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1℃, 50±2%RH).

[0020] The laminate 11 is formed by stacking multiple sheets of sanitary tissue paper, each folded. The method of folding the sanitary tissue paper is not particularly limited, and methods such as bi-fold, C-fold, V-fold, Z-fold can be applied, with C-fold or V-fold being particularly preferred. The laminate 11 is preferably formed by folding and stacking 2-ply sanitary tissue paper sheets as one set, with the number of sets being preferably 100 to 2000, more preferably 200 to 1500, and even more preferably 500 to 1000. The number of sets in the laminate 11 refers to the number of sets of laminate 11 packaged in the sanitary tissue paper packaging 10, and if multiple bundles (clips) of laminate 11 are packaged, it refers to the total number of sets of the multiple bundles of laminate 11. The number of bundles (clips) of laminate 11 packaged in the sanitary tissue paper packaging 10 is preferably 1 to 15 bundles, and more preferably 2 to 10 bundles.

[0021] The density of the laminate 11 (density of the laminate 11 in its packaged state (after compression)) is 0.3 g / cm³. 3 More than 0.8g / cm 3 Preferably, it is 0.4 g / cm³. 3 More than 0.7g / cm 3 The following is more preferable. The density of the laminate 11 can be calculated by the following formula (1) based on the mass of the laminate 11 and the size (width, depth, height) of the laminate 11 in its packaged state. The mass of the laminate 11 can be calculated by subtracting the mass of the film packaging material 12 from the mass of the sanitary tissue packaging 10 in its packaged state. The mass of the sanitary tissue packaging 10 and the mass of the film packaging material 12 are measured after being held in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1℃, 50±2%RH) (for example, measured with an electronic balance). Density of laminate 11 (g / cm³) 3 ) = Mass of laminate 11 (g) / (Width of laminate 11 (cm) × Depth of laminate 11 (cm) × Height of laminate 11 (cm)) ... (1)

[0022] The film packaging material 12 is a packaging material that packages the laminate 11, for example, by pillow packaging. Since the sanitary tissue packaging 10 is a sanitary tissue packaging 10 for refilling, the film packaging material 12 is not provided with an opening (perforation, etc.) that allows the laminate 11 to be removed in a pop-up manner. The film packaging material 12 is formed by creating a sheet into a cylindrical shape that extends in the longitudinal direction, overlapping the ends that extend along the longitudinal direction and sealing them linearly (for example, by heat sealing or ultrasonic sealing), and further sealing both openings in the longitudinal direction linearly. That is, in this embodiment, the sealing portion 13 has a first sealing portion 13a that overlaps the ends that extend along the longitudinal direction when the film packaging material 12 is formed into a cylindrical shape and seals them linearly, and a second sealing portion 13b and a third sealing portion 13c that linearly seal the two openings when the film packaging material 12 is formed into a cylindrical shape. The location and number of the sealing portions 13 are not limited to those shown, as long as the film packaging material 12 can be adhered to the laminate 11 in a way that allows it to be sealed. For example, the laminate 11 may be placed between folded film packaging materials 12, and the three sides other than the folded portion of the film packaging material 12 may be sealed (see Figure 4).

[0023] The film packaging material 12 may be formed as a single layer or as a multi-layer structure. The material of the film packaging material 12 is preferably a thermoplastic resin (so-called plastic) suitable for recycling. Specifically, examples of conventionally known thermoplastic resins include polyethylene, polypropylene such as biaxially oriented polypropylene (OPP) and unoriented polypropylene (CPP), polyester, nylon (polyamide), polycarbonate, polystyrene, and polyvinyl chloride. Among these, polypropylene and nylon (polyamide) are preferred, and nylon-based polyamide resins (nylon-6, nylon-6,6, nylon-6,10, nylon-6,12, etc.) are particularly preferred. Laminated films such as OPP / CPP and nylon / PE (LLDPE) can also be used. Among these, nylon / PE (LLDPE) is preferred in order to maintain a degassed state.

[0024] The thickness of the film packaging material 12 is preferably 10 μm or more and 80 μm or less, and more preferably 30 μm or more and 60 μm or less. The thickness of the film packaging material 12 is measured in accordance with JIS K 7130.

[0025] Next, the dimensions of the laminate 11 and the film packaging material 12 will be described. Figure 2 is an explanatory diagram illustrating the dimensions of the laminate 11 and the film packaging material 12, where (a) shows the laminate 11 in an unpackaged state and (b) shows the film packaging material 12 in an unpackaged state. Figure 3 is an explanatory diagram illustrating the dimensions of the laminate 11 and the film packaging material 12 in a different direction than that shown in Figure 2, where (a) shows the laminate 11 in an unpackaged state and (b) shows the film packaging material 12 in an unpackaged state. In Figures 2 and 3, X represents the lamination direction of the laminate 11, Y represents one direction intersecting the lamination direction of the laminate 11 (hereinafter referred to as the "vertical direction"), and Z represents the other direction intersecting the lamination direction of the laminate 11 (hereinafter referred to as the "horizontal direction").

[0026] The perimeter L2 of the film packaging material 12 with its axis in the vertical direction (Y) intersecting the lamination direction (X) of the laminate 11 (see Figure 2(b)) is preferably -100 mm or more and +200 mm or less than the perimeter L1 of the laminate 11 with its axis in the vertical direction (Y) (see Figure 2(a)) (-100 mm ≤ (L2 - L1) ≤ 200 mm). Also, the perimeter L4 of the film packaging material 12 with its axis in the horizontal direction (Z) intersecting the lamination direction (X) of the laminate 11 (see Figure 3(b)) is preferably -100 mm or more and +200 mm or less than the perimeter L3 of the laminate 11 with its axis in the horizontal direction (Z) (see Figure 3(a)) (-100 mm ≤ (L4 - L3) ≤ 200 mm). In other words, with respect to the perimeter L1 (or L3) of the unpackaged laminate 11 with an axis intersecting the lamination direction of the sanitary tissue paper, the perimeter L2 (or L4) of the film packaging material 12 in the corresponding direction is preferably -100 mm or more and +200 mm or less.

[0027] When manufacturing the sanitary tissue paper packaging 10, for example, the laminate 11 is placed inside a cylindrical film packaging material 12 with the first seal portion 13a sealed (the film packaging material 12 may be made cylindrical to match the laminate 11 and then sealed to create the first seal portion 13a), and then the second seal portion 13b is sealed. Then, before sealing the third seal portion 13c, the film packaging material 12 and the laminate are placed in a vacuum chamber (not shown), and the inside of the film packaging material 12 is degassed to seal the third seal portion 13c. The pressure inside the vacuum chamber (i.e., the pressure inside the packaging) is preferably 2000 Pa or more and less than 3000 Pa. Also, when degassing the inside of the film packaging material 12, the density of the laminate 11 is preferably 0.3 g / cm³. 3 More than 0.8g / cm 3 The following is preferably 0.4 g / cm³ 3 More than 0.7g / cm 3 It is preferable to remove the air so that it is as follows:

[0028] In the sanitary tissue paper packaging 10 configured as described above, the occurrence of wrinkles in the film packaging material 12 can be suppressed by setting the thickness of the film packaging material 12 to 10 μm or more and 80 μm or less, thereby suppressing a deterioration in product quality. In particular, the occurrence of wrinkles in the film packaging material 12 can be suitably suppressed by setting the thickness of the film packaging material 12 to 30 μm or more and 60 μm or less, thereby suppressing a deterioration in product quality. For example, in the case of a laminated body 11 made of soft paper, if the thickness of the film packaging material 12 is less than 30 μm, fine wrinkles may occur in the film packaging material 12, making it impossible to package it flat, and if the thickness of the film packaging material 12 exceeds 60 μm, large wrinkles may occur.

[0029] Furthermore, the density of the laminate 11 is set to 0.3 g / cm³. 3 More than 0.8g / cm 3 The following is preferably 0.4 g / cm³ 3 More than 0.7g / cm 3By doing the following, it is possible to suppress the deterioration of the texture (feel, texture, etc.) of the sanitary tissue paper after opening and the shape retention of the laminate 11, thereby suppressing the deterioration of product quality. For example, if the density of the laminate 11 is 0.3 g / cm³ 3 If the density is lower, the laminate 11 may move inside the film packaging material 12 and lose its shape. Also, if the density of the laminate 11 is 0.8 g / cm³, 3 If the compression exceeds a certain limit, the laminate 11 may collapse due to compression, making it difficult to restore its shape, and the texture of the hygienic tissue paper during use may be impaired.

[0030] Furthermore, by setting the internal pressure of the sanitary tissue packaging 10 to between 2000 Pa and 3000 Pa, it is possible to suppress the deterioration of the texture (feel, texture, etc.) of the sanitary tissue after opening and the shape retention of the laminate 11. For example, if the internal pressure is lower than 2000 Pa, the laminate 11 may collapse due to compression and become difficult to restore, potentially impairing the texture of the sanitary tissue during use, and also increasing equipment and energy costs. On the other hand, if the internal pressure is higher than 3000 Pa, the laminate 11 may move inside the film packaging material 12, potentially causing it to lose its shape and resulting in poor compressibility.

[0031] Furthermore, by folding and laminating sheets of 2-ply sanitary tissue paper as a set, and setting the number of sets to between 100 and 2000, it is possible to suppress warping and collapse of the laminate 11, thereby suppressing a decline in product quality. For example, if the number of sets in the laminate 11 is less than 100, the laminate 11 is more likely to warp, and if the number of sets in the laminate 11 is more than 2000, the laminate 11 is more likely to collapse.

[0032] Furthermore, by setting the circumference L2 (or L4) of the film packaging material 12 to be between -100 mm and +200 mm of the circumference L1 (or L3) of the unpackaged laminate 11, swelling and warping of the film packaging material 12 can be suppressed, thereby preventing a deterioration in product quality. For example, if the circumference L2 (or L4) of the film packaging material 12 is set to less than -100 mm of the circumference L1 (or L3) of the unpackaged laminate 11, the sealing performance of the seal portion 13 will decrease, resulting in insufficient degassing and the risk of swelling of the film packaging material 12. Also, if it exceeds 200 mm, the film packaging material 12 may warp significantly during compression (degassing).

[0033] Furthermore, by using a nylon-based resin for the film packaging material 12, the shape retention of the hygienic tissue paper packaging 10 can be ensured even at low vacuum pressures, thereby suppressing a decline in product quality.

[0034] Thus, according to this embodiment, the sanitary tissue paper packaging 10 can be made more compact by deaerating the tissue paper without compromising the quality of the product. This improves transportation efficiency and reduces storage space.

[0035] In this embodiment, the laminate 11 is packaged in pillow packaging with film packaging material 12, but the invention is not limited to this. Figure 4 is a perspective view showing a modified packaging configuration of the sanitary tissue paper packaging 10. For example, as shown in Figure 4, the film packaging material 12 may package the laminate 11 by a three-side seal packaging method in which three directions intersecting the lamination direction of the laminate 11 are sealed by the seal portion 13.

[0036] Furthermore, in this embodiment, one bundle of laminates 11 is packaged with film packaging material 12, but this is not the only way to go. Figure 5 is a perspective view showing a modified example of the laminates 11 which are the contents of the sanitary tissue packaging 10. For example, as shown in Figure 5, three bundles of laminates 11 may be arranged in a direction intersecting the lamination direction and then packaged with film packaging material 12. Alternatively, multiple bundles of laminates 11 may be stacked in the lamination direction (not shown) and then packaged with film packaging material 12.

[0037] Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can naturally be modified as appropriate without departing from the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on these embodiments are of course included in the scope of the present invention. [Examples]

[0038] The present invention will be described in detail below with reference to examples. However, the present invention is not limited in any way to the examples shown below.

[0039] Sanitary tissue paper packaging bodies were prepared for Examples 1 to 17 and Comparative Examples 1 to 5. The sanitary tissue paper packaging bodies of Examples 1 to 17 and Comparative Examples 1 to 5 differ in at least one of the following: the number of tissue paper layers, the thickness of the film packaging material (hereinafter sometimes referred to as "film"), the material of the film, the density of the laminate, the difference in circumference, and the degassing pressure.

[0040] In Examples 1 to 17 and Comparative Examples 1 to 5, the following physical properties and dimensions of the prepared sanitary tissue paper packaging were measured after being held in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1℃, 50±2%RH).

[0041] The basis weight, sheet thickness, number of plies per sheet of sanitary tissue paper (hereinafter simply referred to as "sheet"), folding shape (folding method), number of stacks of laminates, and size (perimeter) of the unpackaged laminates were standardized for Examples 1-17 and Comparative Examples 1-5.

[0042] Sanitary tissue paper is standardized to tissue paper, and the basis weight of the sheet is measured according to JIS P 8147, at 10.5 g / m². 2 It was standardized to this.

[0043] The sheet thickness was measured using a thickness gauge (Ozaki Seisakusho's dial thickness gauge "PEACOCK") and standardized to 0.55 mm / 10 ply. The measurement conditions were a measuring load of 250 gf and a probe diameter of 30 mm. The sample was placed between the probe and the measuring stand, and the gauge was read when the probe was lowered at a speed of 1 mm or less per second. Each measurement was performed with 10 single-ply sheets stacked together, and the measurement was repeated 10 times, with the measurement results averaged.

[0044] The number of plies per set of sanitary tissue paper has been standardized to 2-ply.

[0045] The folding shape of the sanitary tissue paper was standardized to a V-fold.

[0046] The number of bundles in the laminated structure was standardized to three.

[0047] The film thickness was measured according to JIS K 7130.

[0048] The density of the laminate (density of the laminate 11 in its packaged state) was calculated using the above formula (1) based on the mass of the laminate and the size of the laminate in its packaged state (width, depth, height).

[0049] The perimeter difference is the difference between the perimeters L2 and L4 of the film packaging material, relative to the perimeters L1 and L3 of the unpackaged laminate (see Figures 2(a) and 3(a)). Specifically, the vertical perimeter difference is the value obtained by subtracting the vertical perimeter L3 of the unpackaged laminate from the vertical perimeter L4 of the film packaging material, and the horizontal perimeter difference is the value obtained by subtracting the horizontal perimeter L1 of the unpackaged laminate from the horizontal perimeter L2 of the film packaging material.

[0050] The degassing pressure was determined by reading the gauge pressure (at the end of degassing) which indicates the pressure inside the vacuum chamber (not shown) of the vacuum packaging device.

[0051] Then, between Examples 1-17 and Comparative Examples 1-5, 30 panelists identified defects in the following seven items (film wrinkles, shape retention of contents (laminated material), quality of contents, sheet warping, laminate collapse, film blistering, and film warping), and performed a sensory evaluation on a 5-point scale based on the number of panelists who perceived defects. The details of each evaluation are as follows. 5: Outstandingly superior 4: Excellent 3: Excellent 2: Slightly inferior 1: Inferior

[0052] The wrinkle condition of the film was evaluated on a 5-point scale by visually observing the numerous fine wrinkles appearing on the surface of the tissue paper packaging, as well as the condition of large wrinkles covering one side of the tissue paper packaging. Fewer wrinkles resulted in a rating closer to the highest score of 5, while more wrinkles resulted in a rating closer to the lowest score of 1. The evaluation criteria are as follows: 5. When there is one or fewer people who have "many wrinkles". 4: When 2 to 3 people report "frequent wrinkle development". 3: When 4 to 5 people report "frequent wrinkle development". 2: When 6 to 7 people report "frequent wrinkle development". 1: When "Many wrinkles occur" is reported by 8 or more people.

[0053] The shape retention of the contents was evaluated on a 5-point scale by visually observing whether the outer shape (laminated structure) of the sanitary tissue packaging was maintained as a rectangular prism. The less the contents deformed from the rectangular prism, the closer the evaluation approached the highest rating of 5, and the more the contents deformed from the rectangular prism, the closer the evaluation approached the lowest rating of 1. The evaluation criteria are as follows: 5: When "the collapse from the rectangular prism is significant" is observed by one person or less. 4: When there are 2 to 3 people who say "The cuboid collapses significantly." 3: When there are 4 to 5 people, the "collapse from the rectangular prism is significant" 2: When "the collapse from the rectangular prism is significant" is observed by 6 to 7 people. 1: When there are 8 or more people who say "The collapse from the rectangular prism is significant".

[0054] The quality of the contents was evaluated on a 5-point scale by observing whether the separation and texture of the sheets were maintained after opening the sanitary tissue packaging. The closer the evaluation was to the highest rating of 5, the better the separation and texture of the sheets were maintained after opening, and the closer it was to the lowest rating of 1, the worse the separation and texture of the sheets were. The evaluation criteria are as follows: 5. When "the sheet is not separated properly or has a poor texture" is reported by one person or less. 4: "Poor condition of the sheet separation or texture" when there are 2 to 3 people. 3: "Poor condition of the sheet separation or texture" when there are 4 to 5 people. 2: "Poor separation or texture of the sheets" when there are 6 to 7 people 1: When there are 8 or more people who say "the separation of the seats or the texture is poor".

[0055] The degree of sheet warping was evaluated on a 5-point scale by visually observing the deformation of the laminate. Less sheet warping corresponds to a rating of 5 (the highest rating), while greater warping corresponds to a rating of 1 (the lowest rating). The evaluation criteria are as follows: 5. When "the seat is very wavy" is observed by one person or less. 4: "The seat is very wavy" when there are 2-3 people. 3: "The seats are very wavy" when there are 4 to 5 people. 2: "The seats are very wavy" when there are 6 to 7 people. 1: When the "seat is very wavy" is observed by 8 or more people.

[0056] Lamination collapse was evaluated on a 5-point scale by observing the alignment of the laminate in the thickness direction. Less collapse corresponds to a rating of 5 (the highest rating), while greater collapse corresponds to a rating of 1 (the lowest rating). The evaluation criteria are as follows: 5: When "Severe collapse of the layered structure" is reported by one person or less. 4: When "the layer collapse is significant" is observed by 2 to 3 people. 3: When "the layer collapse is significant" is observed by 4 to 5 people. 2: When "the layer collapse is significant" is observed by 6 to 7 people. 1: When "the layer collapse is significant" occurs in 8 or more people.

[0057] The film bulging was evaluated on a 5-point scale by visually observing the degree of bulging on the flat (surface) surface of the sanitary tissue paper packaging. The smaller the bulging on the flat surface of the sanitary tissue paper packaging, the closer it is to the highest rating of 5, and the larger the bulging on the flat surface of the sanitary tissue paper packaging (insufficient degassing), the closer it is to the lowest rating of 1. The evaluation criteria are as follows: 5. When the "flat surface of the sanitary tissue paper packaging is significantly bulging" is observed by one person or less. 4. "The flat surface of the sanitary tissue packaging is significantly bulging" when there are 2 to 3 people. 3: When the flat surface of the sanitary tissue paper packaging is significantly bulging, and there are 4 to 5 people present. 2: When the flat surface of the sanitary tissue paper packaging is significantly bulging, and there are 6 to 7 people. 1: When the flat surface of the sanitary tissue paper packaging is significantly bulging, and there are 8 or more people.

[0058] Film warping was evaluated on a 5-point scale by visually observing the degree of sagging of the film in the sanitary tissue packaging. The less sagging the film, the closer it approached the highest rating of 5, and the more sagging the film, the closer it approached the lowest rating of 1. The evaluation criteria are as follows: 5. When "the film sags significantly" is reported by one person or less. 4: When 2 to 3 people have "significant film sagging". 3: When 4 to 5 people have the response "The film is sagging a lot". 2: When 6 to 7 people report "the film is sagging significantly". 1: When there are 8 or more people who say "The film is sagging a lot."

[0059] (Example 1) In the sanitary tissue paper packaging of Example 1, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 55 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0060] (Example 2) In Example 2, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 10 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0061] (Example 3) In the sanitary tissue paper packaging of Example 3, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was set to 80 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was set to 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0062] (Example 4) In the sanitary tissue paper packaging of Example 4, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 30 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0063] (Example 5) In the sanitary tissue paper packaging of Example 5, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the vertical direction and 20 mm in the horizontal direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0064] (Example 6) In the sanitary tissue paper packaging of Example 6, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2950 Pa, and the density of the laminate after compression was 0.32 g / cm³. 3 That's what I decided.

[0065] (Example 7) In the sanitary tissue paper packaging of Example 7, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2000 Pa, and the density of the laminate after compression was 0.79 g / cm³. 3 That's what I decided.

[0066] (Example 8) In the sanitary tissue paper packaging of Example 8, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2800 Pa, and the density of the laminate after compression was 0.40 g / cm³. 3 That's what I decided.

[0067] (Example 9) In the sanitary tissue paper packaging of Example 9, the number of layers of sanitary tissue paper in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2600 Pa, and the density of the laminate after compression was 0.60 g / cm³. 3 That's what I decided.

[0068] (Example 10) In the sanitary tissue paper packaging of Example 10, the number of sanitary tissue paper layers in the laminate was set to 100. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.70 g / cm³. 3 That's what I decided.

[0069] (Example 11) In the sanitary tissue paper packaging of Example 11, the number of sanitary tissue paper layers in the laminate was set to 2000. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.62 g / cm³. 3 That's what I decided.

[0070] (Example 12) In the sanitary tissue paper packaging of Example 12, the number of sanitary tissue paper layers in the laminate was set to 200. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.68 g / cm³. 3 That's what I decided.

[0071] (Example 13) In the sanitary tissue paper packaging of Example 13, the number of sanitary tissue paper layers in the laminate was set to 1000. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.62 g / cm³. 3 That's what I decided.

[0072] (Example 14) In the sanitary tissue paper packaging of Example 14, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -95 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2000 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0073] (Example 15) In the sanitary tissue paper packaging of Example 15, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 190 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0074] (Example 16) In the sanitary tissue paper packaging of Example 16, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was made by laminating OPP and CPP, and the film thickness was set to 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the vertical direction and 20 mm in the horizontal direction. The degassing pressure during compression of the sanitary tissue paper packaging was set to 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0075] (Example 17) In the sanitary tissue paper packaging of Example 17, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was made by laminating OPP and CPP, and the film thickness was set to 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the vertical direction and 20 mm in the horizontal direction. The degassing pressure during compression of the sanitary tissue paper packaging was set to 2800 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0076] (Comparative Example 1) In Comparative Example 1, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 9 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0077] (Comparative Example 2) In Comparative Example 2, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 100 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.65 g / cm³. 3 That's what I decided.

[0078] (Comparative Example 3) In Comparative Example 3, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 3200 Pa, and the density of the laminate after compression was 0.28 g / cm³. 3 That's what I decided.

[0079] (Comparative Example 4) In Comparative Example 4, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was nylon-based, and the film thickness was 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the longitudinal direction and 20 mm in the transverse direction. The degassing pressure during compression of the sanitary tissue paper packaging was 2500 Pa, and the density of the laminate after compression was 0.82 g / cm³. 3 That's what I decided.

[0080] (Comparative Example 5) In Comparative Example 5, the number of sanitary tissue paper layers in the laminate was set to 800. The film material was made by laminating OPP and CPP, and the film thickness was set to 60 μm. The difference in perimeter of the film packaging material compared to the unpackaged laminate was -30 mm in the vertical direction and 20 mm in the horizontal direction. The degassing pressure during compression of the sanitary tissue paper packaging was set to 1800 Pa, and the density of the laminate after compression was 0.84 g / cm³. 3 That's what I decided.

[0081] The results for Examples 1 to 17 are shown in Table 1, and the results for Comparative Examples 1 to 5 are shown in Table 2.

[0082] [Table 1]

[0083] [Table 2]

[0084] As shown in Tables 1 and 2 above, it was confirmed that wrinkles in the film packaging material can be suppressed by making the film packaging material thickness between 10 μm and 80 μm.

[0085] Furthermore, the density of the laminate was set to 0.3 g / cm³. 3 More than 0.8g / cm 3 It was confirmed that the following measures can suppress the deterioration of the quality of the contents (texture of the sanitary tissue after opening) and the shape retention of the laminate.

[0086] Furthermore, it was confirmed that maintaining the internal pressure of the sanitary tissue packaging between 2000 Pa and 3000 Pa suppresses the deterioration of the quality of the contents (texture of the sanitary tissue after opening) and the shape retention of the laminate.

[0087] Furthermore, it was confirmed that by folding and laminating sheets of 2-ply sanitary tissue paper as a set, and increasing the number of sets between 100 and 2000, the warping and collapse of the laminated structure can be suppressed.

[0088] Furthermore, it was confirmed that bulging and warping of the film packaging material can be suppressed by setting the perimeter L2 (or L4) of the film packaging material to be between -100 mm and +200 mm of the perimeter L1 (or L3) of the unpackaged laminate.

[0089] Furthermore, it was confirmed that by using a nylon-based resin for the film packaging material, the shape retention of the hygienic tissue paper packaging can be ensured even at low vacuum pressures.

[0090] Therefore, according to the sanitary tissue paper packaging described herein, the sanitary tissue paper can be deaerated and the sanitary tissue paper packaging made more compact without compromising the quality of the product. [Explanation of symbols]

[0091] 10: Sanitary tissue paper packaging 11: Laminate 12: Film packaging materials

Claims

1. A sanitary tissue paper package in which a laminate of sanitary tissue paper is wrapped in a film packaging material, The aforementioned film packaging material does not have an opening that allows the laminate to be removed in a pop-up manner. The thickness of the aforementioned film packaging material is 30 μm or more and 60 μm or less. The density of the laminate is 0.3 g / cm³. ３ 0.8g / cm or more ３ The following: The pressure inside the packaging is between 2000 Pa and less than 3000 Pa. The laminate is formed by folding and laminating the sanitary tissue paper into sets of two-ply sheets. The number of sets of sanitary tissue paper in the laminate is 500 sets or more and 1000 sets or less. A hygienic tissue paper packaging characterized by the following features.

2. With respect to the perimeter of the unpackaged laminate, with respect to the perimeter of the laminate intersecting the lamination direction of the sanitary tissue paper, the perimeter of the film packaging material in the corresponding direction is -100 mm or more and +200 mm or less. The sanitary tissue paper packaging according to feature 1.

3. The material of the aforementioned film packaging material is a nylon-based resin. A sanitary tissue paper packaging according to claim 1 or 2.

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