Roll product packaging

Abstract

The objective is to provide a roll product packaging that, even for long, unscented roll products, prevents odor transfer, offers excellent odor blocking, suppresses film tearing, is compact, and also has good heat-sealing properties. [Solution] In a roll product package in which multiple roll products, each consisting of a sheet of sanitary tissue paper wound into a roll, are stored in a gusseted packaging bag made of film, the roll product is fragrance-free and has a roll density of 0.11 g / cm³. 3 More than 0.32g / cm 3 The film is a multilayer film having at least a polyolefin as the outermost layer and nylon as the middle layer, with an oxygen permeability of 1000 cc / m². 2 The above problem is solved by a roll product packaging characterized by having a daily atm or less, and the total mass of the roll products packaged in the gusseted packaging bag being between 450g and 2200g.

Description

[Technical Field]

[0001] This invention relates to a roll product packaging that contains multiple rolls of unscented tissue paper products. [Background technology]

[0002] In recent years, toilet rolls have gained added value due to their efficient transport and reduced frequency of replacement, with longer, more compact rolls (higher roll density) being considered a key feature. Consequently, the mass of the rolls has also increased.

[0003] Another added value has been proposed, which involves adding fragrance to the constituent components such as paper (sheets) and paper tubes. For example, Patent Document 1 discloses a toilet paper core material in which fragrance is contained in the adhesive used to bond the core materials.

[0004] On the other hand, there is a certain number of consumers who are sensitive to fragrances and scents, or who have fragrance allergies, and these consumers prefer unscented toilet rolls. Such unscented, long-roll toilet rolls are often packaged in packaging films made of PE (polyethylene) or PP (polypropylene), which have good processability (for example, Patent Document 2). However, because PE and PP have high oxygen permeability and low gas barrier properties, fragrances from other scented products or unpleasant odors in warehouses and trucks during the distribution process often transfer to unscented toilet rolls, which reduces the added value of unscented products.

[0005] Therefore, to prevent odor transfer, a technique has been developed to lower the oxygen permeability of the film by making the film a three-layer structure with the middle layer being an "ethylene-vinyl alcohol copolymer film layer (EVOH)" (for example, Patent Document 3). However, films using EVOH have low tensile strength, and when used to package heavy, long toilet rolls, they cannot withstand the weight, sometimes resulting in tearing or ripping of the film.

[0006] In order to increase the strength of the film while keeping the oxygen permeability low, if the basis weight of the film or the thickness of each layer is increased, the film becomes stiff, heat seal adhesion tends to be insufficient, and packaging defects are likely to occur. Also, without changing the strength of the film, by reducing the roll length or reducing the basis weight to reduce the total mass of the roll to be packaged, film breakage can be prevented, but the roll density decreases and the compactness deteriorates.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0008] The present invention has been made in view of such circumstances, and an object thereof is to provide a roll product package that is compact, has excellent odor barrier properties without odor transfer, can suppress film breakage, and has good heat sealability even for a long roll product without fragrance.

Means for Solving the Problems

[0009] The inventors conducted intensive studies and found that in a roll product package in which a plurality of roll products obtained by winding a sheet of sanitary tissue paper in a roll shape are stored in a gusseted packaging bag made of a film, by defining the presence or absence of fragrance of the roll product, the roll density, the material and oxygen permeability of the film, and the total mass of the roll products packaged in the gusseted packaging bag, the above problems can be solved, and the present invention has been completed.

[0010] (1) A first aspect of the present invention is a roll product package comprising a plurality of roll products, each rolled from a sheet of sanitary tissue paper, stored in a gusset packaging bag made of film, wherein the roll products do not contain fragrances, have a roll density of 0.11 g / cm³ or more and 0.32 g / cm³ or less, the film is a multilayer film having at least polyolefin as the outermost layer and nylon as the middle layer, having an oxygen permeability of 1000 cc / m²·day·atm or less, and the total mass of the roll products packaged in the gusset packaging bag is 450 g or more and 2200 g or less.

[0011] (2) A second aspect of the present invention is a roll product packaging as described in (1), characterized in that the thickness of the nylon is 35% or less of the thickness of the film.

[0012] (3) A third aspect of the present invention is a roll product packaging according to (1) or (2), characterized in that the nylon has a thickness of 2 μm or more and 20 μm or less.

[0013] (4) A fourth aspect of the present invention is a roll product packaging according to (1) or (2), wherein the film has a thickness of 15 μm or more and 70 μm or less.

[0014] (5) A fifth aspect of the present invention is a roll product packaging according to (1) or (2), wherein the film has a tensile breaking strength in the MD direction of 25 MPa or more and 65 MPa or less.

[0015] (6) A sixth aspect of the present invention is a roll product packaging according to (1) or (2), wherein the film has a tensile breaking strength in the TD direction of 20 MPa or more and 55 MPa or less.

[0016] (7) A seventh aspect of the present invention is a roll product packaging according to (1) or (2), wherein the film has a tensile elongation at break of 200% or more and 480% or less in the MD direction, and a tensile elongation at break of 310% or more and 690% or less in the TD direction.

[0017] (8) An eighth aspect of the present invention is a roll product packaging according to (1) or (2), wherein the sheet of sanitary tissue paper has a basis weight of 10.0 g / m2 or more and 21.0 g / m2 or less per ply, and the roll product has a (roll length × number of product plies) of 60 or more.

[0018] (9) A ninth aspect of the present invention is a roll product packaging according to (1) or (2), wherein the roll product has a length of 30m or more and 155m or less.

[0019] (10) A tenth aspect of the present invention is a roll product packaging as described in (1) or (2), characterized in that the value of (total mass of the roll product (g) ÷ tensile breaking strength of the film in the MD direction) is 14 or more and 42 or less.

[0020] (11) An eleventh aspect of the present invention is a roll product packaging according to (1) or (2), characterized in that the value of (tensile breaking strength in the MD direction ÷ roll density) is 105 or more and 320 or less. [Effects of the Invention]

[0021] According to the present invention, even with long rolls of fragrance-free products, it is possible to provide a roll product packaging that does not transfer odors, has excellent odor blocking properties, suppresses film tearing, is compact, and also has good heat-sealability. [Brief explanation of the drawing]

[0022] [Figure 1] This is a perspective view of a roll product packaging body according to an embodiment of the present invention. [Figure 2] These are front and top views of the packaging bag. [Figure 3] This is a perspective view of the roll product. [Modes for carrying out the invention]

[0023] The following describes in detail embodiments for carrying out the present invention (hereinafter simply referred to as "this embodiment"). This embodiment is illustrative for explaining the present invention and is not intended to limit the present invention to the following content. The present invention can be implemented by modifying it as appropriate within the scope of its gist.

[0024] In this specification, "product ply" refers to the number of plies in a roll of tissue paper, without separating the laminated sheets into individual sheets, as is the case with the product.

[0025] In this specification, the "MD direction" of a film means the direction in which the resin flows during injection molding, i.e., the machine direction, and the "TD direction" means the direction perpendicular to the MD direction (transverse direction).

[0026] <Roll product packaging> An embodiment of the roll product packaging 1 (hereinafter also simply referred to as "packaging 1") according to the present invention will be described with reference to Figure 1. Figure 1 is a perspective view of packaging 1. As shown in Figure 1, packaging 1 consists of multiple roll products 2 (hereinafter also simply referred to as "roll 2"), which are rolls of sanitary tissue paper sheets 2x (hereinafter also simply referred to as "sanitary tissue paper 2x" or "sheet 2x") wound into a roll shape, stored in a gusset packaging bag 3 (hereinafter also simply referred to as "packaging bag 3" or "film 3") made of film.

[0027] The present invention will be described below in terms of [1] sanitary tissue paper, [2] roll products, [3] packaging bags, and [4] roll product packaging.

[0028] [1] Sanitary tissue paper Sanitary tissue paper 2x is a sheet-like material that is wound into a roll on roll product 2, such as toilet paper.

[0029] (Material of sanitary tissue paper) Sanitary tissue paper 2x may consist of 100% wood pulp by mass, and may also contain recycled pulp (such as waste paper pulp), non-wood pulp, and deinked pulp. To obtain the target quality, the content of NBKP (bleached softwood kraft pulp) is preferably 0% to 35% by mass, more preferably 2% to 25% by mass, and even more preferably 5% to 15% by mass. Furthermore, the content of LBKP (bleached hardwood kraft pulp) is preferably 65% ​​to 100% by mass, more preferably 75% to 98% by mass, and even more preferably 85% to 95% by mass.

[0030] Furthermore, the content of recycled pulp (such as waste paper pulp derived from paper cups or waste paper pulp derived from liquid beverage containers such as milk cartons) is preferably 50% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, and most preferably 10% by mass. The content of kraft pulp is preferably 50% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and most preferably 100% by mass.

[0031] Recycled paper pulp from paper cups and liquid beverages such as milk cartons is mainly composed of softwood pulp, which has the advantage of easily improving the strength of sanitary tissue paper 2x. However, it has a large variation in quality, and if the content is too high, it can affect the quality of the product. By keeping the content of recycled pulp, including recycled paper pulp from liquid beverages such as milk cartons, within the above range, it is possible to effectively improve the strength of sanitary tissue paper 2x while suppressing variations in quality.

[0032] Furthermore, depending on the required quality of the final product, additives such as debonder softeners, bulking agents, dyes, dispersants, dry strength enhancers, water filtration enhancers, pitch control agents, and absorbency enhancers can be used as additives to the paper pulp. It is preferable not to use wet strength enhancers. Also, when using recycled paper raw materials for toilet paper, it is preferable to perform the same treatment as in the case of virgin paper.

[0033] (Number of plies) The number of plies of the sanitary tissue paper 2x is preferably 1 to 4 plies, more preferably 1 to 3 plies, even more preferably 1 to 2 plies, and most preferably 2 plies. If the number of plies exceeds 4, the total weight of the packaged roll 2 increases, assuming the basis weight and roll length remain unchanged, making the packaging bag 3 of the packaged body 1 more prone to tearing.

[0034] (Paper thickness per 10 plies) The paper thickness per 10 plies of sanitary tissue paper 2x (hereinafter also simply referred to as "paper thickness (10 plies)") is preferably 0.45 mm or more at the lower limit, more preferably 0.50 mm or more, and even more preferably 0.55 mm or more. The upper limit is preferably 1.60 mm or less, more preferably 1.50 mm or less, and even more preferably 1.40 mm or less. If the paper thickness (10 plies) is less than 0.45 mm, the roll length increases, and the mass of roll 2 and the total mass of the packaged roll 2 increase, making the packaging bag 3 of the package 1 more prone to tearing, provided that the basis weight and roll diameter remain unchanged. If the paper thickness (10 plies) exceeds 1.60 mm, the roll diameter increases and the roll density decreases, resulting in a less compact package 1, provided that the roll length and roll density remain unchanged.

[0035] The paper thickness shall be the value measured by the following method. The device used shall be a thickness gauge (Dial Thickness Gauge "PEACOCK" manufactured by Ozaki Seisakusho Co., Ltd.). (1) The measurement conditions are a measuring load of 3.7 kPa and a probe diameter of 30 mm. The sample is placed between the probe and the measuring stand, and the gauge is read when the probe is lowered at a speed of 1 mm or less per second. (2) The measurement positions of the paper thickness shall be 5 points that are different from each other in the MD direction of the sanitary tissue paper sheet 2x, and a total of 10 points including 5 points that are shifted in the CD direction so that the measurement positions do not overlap. Note that it is important to measure 10 points at different positions, and the exact positions are not questioned. (3) When the product ply is 1 ply, stack 10 sheets, and when it is 2 plies, stack 5 sets. Measure the paper thickness per 10 plies 10 times repeatedly by the above measurement method, average the measurement results, and use the measured value of the paper thickness (10 plies). (4) When the product ply is 3 plies, stack 4 sets, and when it is 4 plies, stack 3 sets. Measure the paper thickness per 12 plies 10 times repeatedly by the above measurement method, and average the measurement results. Convert the paper thickness per 12 plies to that per 10 plies, and use the measured value of the paper thickness (10 plies).

[0036] (Grammage) The grammage per ply of the sanitary tissue paper 2x (hereinafter, also simply referred to as "grammage (1 ply)") is preferably 10.0 g / m 2 or more and 21.0 g / m 2 or less. If the grammage (1 ply) is less than 10.0 g / m 2 , when the roll length remains unchanged, the roll density becomes low, so the compactness of the package 1 is poor. If the grammage (1 ply) exceeds 21.0 g / m 2 , when the roll length and the number of plies remain unchanged, the mass of the roll 2 and the total mass of the rolls 2 to be packaged increase, and the packaging bag 3 of the package 1 is likely to break. The lower limit value of the grammage (1 ply) is more preferably 11.0 g / m 2 or more, and even more preferably 12.0 g / m 2 or more. The upper limit value is more preferably 20.0 g / m 2 or less, and even more preferably 19.0 g / m 2 or less. Note that the grammage is measured based on JIS P 8124.

[0037] (Specific volume) The specific volume per ply of the sanitary tissue paper 2x (hereinafter, also simply referred to as "specific volume (1 ply)") has a lower limit value of preferably 2.0 cm 3 / g or more, and 3.0 cm3 More preferably 4.0 cm or more per gram. 3 A value of 10.0 cm or more is even more preferable. The upper limit is 10.0 cm. 3 Preferably less than / g, and 9.0cm 3 More preferably less than / g, 8.0cm 3 A value of less than / g is even more preferable. Specific volume (1 ply) of 2.0 cm³ is preferred. 3 If the weight is less than / g, and the roll diameter and basis weight remain unchanged, the paper thickness decreases and the roll length increases, which increases the mass of roll 2 and the total mass of the packaged roll 2, making the packaging bag 3 of package 1 more prone to tearing. Specific volume (1 ply) is 10.0 cm³. 3 If the weight exceeds / g, the paper thickness increases and the roll length decreases, resulting in a less compact packaging, even if the roll diameter and basis weight remain unchanged.

[0038] The specific volume (1 ply) is calculated by first converting the paper thickness (10 plies) to 1 ply using proportional calculation, then dividing by the basis weight (1 ply) to obtain the volume per gram (cm³). 3 It is represented as follows.

[0039] (Perforations on the sheet) Preferably, the sanitary tissue paper 2x of roll 2 is provided with perforations 2c for cutting the sanitary tissue paper 2x into individual sheets. Furthermore, it is preferable that the perforations 2c are provided at approximately equal intervals in the winding direction of roll 2.

[0040] (Sheet length) The sheet length between perforations 2c and adjacent perforations 2c (length in the Y direction shown in Figure 3) is preferably 200 mm or more at the lower limit, more preferably 210 mm or more, and even more preferably 220 mm or more. The upper limit is preferably 260 mm or less, more preferably 250 mm or less, and even more preferably 240 mm or less. If the sheet length is less than 200 mm, the paper is more likely to break when the roll 2 is tightly wound, resulting in poor operability. If the sheet length exceeds 260 mm, the number of areas where the perforation blades create the perforations 2c is reduced, so the areas where the paper thickness is low within the sheet 2x are reduced, and the winding diameter becomes larger, resulting in poor compactness. Also, if the sheet length is within this range, a single sheet 2x cut into individual leaves can maintain appropriate water absorption, and moisture can be wiped away without getting your hands dirty or wasting anything.

[0041] (Seat width) The sheet width (hereinafter also referred to as "roll width") (W shown in Figure 3) of the sanitary tissue paper 2x of roll 2 is preferably 100 mm or more, more preferably 103 mm or more, and even more preferably 105 mm or more. The upper limit is preferably 130 mm or less, more preferably 127 mm or less, and even more preferably 124 mm or less. If the sheet width is less than 100 mm, the water absorption of the sheet 2x cut into individual sheets will be poor. If the sheet width exceeds 130 mm, the mass of roll 2 and the total mass of the packaged roll 2 will increase, making the packaging bag 3 of the package 1 more prone to tearing, provided that the basis weight and roll length remain unchanged.

[0042] (Embossed) Sheet 2x may or may not be embossed, but embossing is preferred. Furthermore, single embossing or double embossing is preferred, with single embossing being more preferred. For example, in the case of a 2-ply sheet, possible combinations of embossing include: (1) double embossing with micro-embossing on the front sheet 2a and micro-embossing on the back sheet 2b; (2) decorative embossing on the front sheet 2a and no embossing on the back sheet 2b; and (3) decorative embossing on the front sheet 2a and double embossing with micro-embossing on the back sheet 2b.

[0043] The embossing pattern can be selected from micro-embossing or decorative embossing.

[0044] (Number of embossed areas) The minimum number of embossed areas per unit area in a 2x sheet is 3 embossed areas / cm². 2 The above is preferable, with 5 pieces / cm 2 The above is more preferable at 8 pieces / cm 2 The above is even more preferable. The upper limit is 80 pieces / cm 2 The following is preferable: 60 pieces / cm 2 The following is more preferable: 15 pieces / cm 2 The following is even more preferable: The number of embossed marks is 3 per cm. 2 More than 80 pieces / cm 2 The following conditions result in an appropriate embossed area per sheet 2x and good compactness (roll density) for roll 2. To measure the number of embossed areas, draw a 10mm x 10mm line that includes two or more embossed areas, and count the number of embossed areas within the square. Note that embossed areas that overlap the 10mm x 10mm line are not included in the count.

[0045] (Sheet jointing) The joining of sheets 2x (ply) can be done by pressing multiple sheets together simultaneously with single embossing, or by joining them independently of embossing using glue or knurling (edge ​​embossing). Among these, the method of pressing multiple sheets together simultaneously with single embossing or joining by knurling is preferred, and the method of pressing multiple sheets together simultaneously with single embossing is more preferred.

[0046] [2] Roll products Roll product 2 is made by winding the above-mentioned sheets 2x of sanitary tissue paper onto a paper tube 2d in a roll shape.

[0047] (Paper tube) The paper tube 2d (hereinafter also referred to as "core 2d") located in the center of the roll 2 and used to wind the sheet 2x into a roll shape is preferably a roughly cylindrical paper tube. The material (paper) used for the paper tube 2d preferably contains bleached kraft pulp (BKP) such as bleached hardwood kraft pulp (LBKP) or bleached softwood kraft pulp (NBKP) as pulp fibers. The pulp content (mass%) of the paper used for the paper tube 2d is preferably NBKP:LBKP of 50:50 to 0:100, more preferably 30:70 to 0:100, and even more preferably 10:90 to 0:100. Furthermore, from the viewpoint of strength, it is preferable that the paper used for the paper tube 2d is made up of multiple layers.

[0048] (Paper tube outer diameter) The outer diameter of the paper tube 2d (DI in Figure 3) is preferably 20 mm or more at the lower limit, more preferably 25 mm or more, and even more preferably 30 mm or more. The upper limit is preferably 60 mm or less, more preferably 55 mm or less, and even more preferably 50 mm or less. If the outer diameter of the paper tube is less than 20 mm, the winding length will increase if the winding diameter and winding density remain unchanged, increasing the mass of the roll 2 and the total mass of the packaged roll 2, making the packaging bag 3 of the packaged body 1 more prone to tearing. If the outer diameter of the paper tube exceeds 60 mm, the winding length will decrease if the winding diameter and winding density remain unchanged, resulting in a less compact packaged body 1.

[0049] The outer diameter of the paper core is measured using a Diameter Rule manufactured by Muratec KDS Co., Ltd. The measurement is taken by measuring the midpoint of the paper core lengths (lengths in the X direction as shown in Figure 3) of three rolls 2, and averaging the results. If there is no paper core 2d in roll 2 (coreless), the diameter of the central hole in roll 2 is measured.

[0050] (Paper tube mass) The lower limit of the mass of the paper core 2d per roll width of 114 mm is preferably 2.0 g or more, more preferably 2.5 g or more, and even more preferably 3.0 g or more. The upper limit is preferably 9.0 g or less, more preferably 8.0 g or less, and even more preferably 7.0 g or less. If the paper core mass is less than 2.0 g, it becomes easily crushed when tightly wound. If the paper core mass exceeds 9.0 g, the roll mass increases, and the total mass of the packaged roll 2 also increases, making the packaging bag 3 of the packaged body 1 more prone to tearing.

[0051] (winding diameter) The lower limit of the roll diameter of roll 2 (DR in Figure 3) is preferably 100 mm or more, more preferably 105 mm or more, and even more preferably 110 mm or more. The upper limit is preferably 130 mm or less, more preferably 125 mm or less, and even more preferably 120 mm or less. If the roll diameter is less than 100 mm, the roll length will be shorter if the basis weight and winding density remain unchanged, resulting in poorer compactness of the packaging 1. If the roll diameter exceeds 130 mm, the roll length will be longer if the basis weight and winding density remain unchanged, increasing the mass of roll 2 and the total mass of the roll 2 being packaged, making the packaging bag 3 of the packaging 1 more prone to tearing.

[0052] The winding diameter of roll 2 is measured using a Diameter Rule manufactured by Muratec KDS Corporation. The measurement is taken at the center of the roll width direction (X direction shown in Figure 3) of three rolls 2, and the measurement results are averaged.

[0053] (Length of volume) The length of roll 2 is preferably 30m or more and 155m or less. If the length is less than 30m, the compactness of the packaging 1 will be poor if the basis weight of the sanitary tissue paper 2x remains unchanged. If the length exceeds 155m, the mass of roll 2 and the total mass of the packaged roll 2 will increase if the basis weight of the sanitary tissue paper 2x remains unchanged, making the packaging bag 3 more prone to tearing, and the compactness will be poor if the basis weight is reduced. The lower limit of the length is more preferably 40m or more, and even more preferably 45m or more. The upper limit is more preferably 105m or less, and even more preferably 85m or less.

[0054] The roll length is measured as follows: First, measure the length of 10 sheets between perforation 2c and the adjacent perforation 2c on roll 2. Then, measure the number of sheets on roll 2, and calculate the roll length proportionally from the length of 10 sheets and the number of sheets. For example, if the length of 10 sheets is 2.30m and the number of sheets is 326, then 2.30m × (326 / 10) = 75m. If roll 2 does not have perforations, measure the roll length directly.

[0055] (Length x Number of plies) It is preferable that the value obtained by multiplying the length of roll 2 by the number of plies (= length × number of plies) is 60 or more. If this value is less than 60, the winding density and roll density will be small, resulting in poorer compactness of the packaging 1.

[0056] (winding density) The winding density of roll 2 has a lower limit of 0.60 m / cm². 2 The above is preferable, and 0.80 m / cm 2 The above is more preferable, 1.00 m / cm 2 The above is even more preferable. The upper limit is 2.00 m / cm 2 The following is preferred: 1.80 m / cm 2 The following is more preferable: 1.60 m / cm 2 The following is even more preferable: a winding density of 0.60 m / cm². 2 If the winding density is less than 2.00 m / cm², the winding length will be shorter if the winding diameter and ply count remain the same, resulting in less compact packaging. 2 If it exceeds this limit, the roll length increases even if the basis weight and ply count of the sanitary tissue paper 2x remain unchanged. This increases the mass of roll 2 and the total mass of the packaged roll 2, making the packaging bag 3 of the packaged body 1 more prone to tearing.

[0057] Winding density is expressed as (winding length × number of plies) ÷ (cross-sectional area of ​​the roll). The cross-sectional area of ​​the roll is expressed as {cross-sectional area of ​​the outer diameter (winding diameter DR) portion of the roll - (cross-sectional area of ​​the outer diameter DI portion of the core)}. For example, in the case of a winding length of 76m, 2 plies, winding diameter DR 118mm, and core outer diameter DI 39mm, winding density = (76m × 2) ÷ {3.14 × (118mm ÷ 2 ÷ 10)} 2-3.14 × (39mm ÷ 2 ÷ 10) 2} = 1.56 m / cm 2 This is the result.

[0058] (Roll weight <without paper core>) The roll mass of roll 2, excluding the paper core 2d per roll width of 114 mm (hereinafter also simply referred to as "roll mass <without paper core>"), is preferably 110 g or more, more preferably 150 g or more, and even more preferably 190 g or more. The upper limit is preferably 340 g or less, more preferably 315 g or less, and even more preferably 300 g or less. If the roll mass <without paper core> is less than 110 g, the roll density will be low, and the compactness of the packaging 1 will be poor. If the roll mass <without paper core> exceeds 340 g, the mass of roll 2 will increase, and if the number of rolls to be packaged remains the same, the packaging bag 3 of the packaging 1 will be more prone to tearing.

[0059] (Roll density) The roll density of Roll 2 is 0.11 g / cm³. 3 More than 0.32g / cm 3 The following applies: Roll density is 0.11 g / cm³ 3 If the roll density is less than 0.32 g / cm³, the compactness of the packaging 1 is poor. 3 If this value is exceeded, and the number of rolls packaged remains the same, the mass of roll 2 and the total mass of packaged roll 2 will increase, making the packaging bag 3 of package 1 more prone to tearing. The lower limit of roll density is 0.14 g / cm³. 3 The above is preferable, 0.18 g / cm³ 3 The above is preferable. The upper limit is 0.30 g / cm³. 3 The following is preferable: 0.26 g / cm³ 3 The following are preferable.

[0060] Roll density is expressed as (roll mass) ÷ (roll volume). Roll mass is the mass of roll 2 per 114 mm roll width. Roll volume is expressed as [{cross-sectional area of ​​the roll's outer diameter (winding diameter DR) portion} - (cross-sectional area of ​​the core's outer diameter DI portion)] × roll width (converted to per 114 mm). For example, if the roll mass (without paper core) per 108 mm roll width is 241 g, the winding diameter DR is 118 mm, and the core outer diameter DI is 39 mm, then roll density = [241 g × 114 mm ÷ 108 mm] ÷ [{3.14 × (118 mm ÷ 2 ÷ 10)] 2 -3.14 × (39mm ÷ 2 ÷ 10) 2} × (114 mm ÷ 10) = 0.23 g / cm 3 This is the result.

[0061] (unscented) Roll 2 is an unscented roll product in which no fragrance is added (coated). That is, neither the paper core 2d nor the sanitary tissue paper 2x contains any fragrance, and in the case of coreless type roll 2 without a paper core 2d, the sanitary tissue paper 2x does not contain any fragrance. Furthermore, if there are other means of adding (coating) fragrance to roll 2, it is important that all of these means are not employed, resulting in an unscented roll 2.

[0062] [3] Packaging bag Specific examples of the packaging bag 3 are shown in Figures 1 and 2. The packaging bag 3 is a gusseted packaging bag that can hold multiple roll products 2, and is a multilayer film having at least a thermoplastic resin film 3A (hereinafter also called "surface layer 3A") and 3C (hereinafter also called "back layer 3C") as the outermost layers, and a gas barrier resin film 3B (hereinafter also called "middle layer 3B") as the middle layer.

[0063] (Gusseted packaging) As shown in Figure 1, the packaging bag 3 preferably has a main body 31 made of a tubular film that can hold multiple roll products 2, and a handle portion 32 on the upper end side of the main body 31. As shown in Figure 2, the packaging bag 3 is, for example, made by folding both the left and right sides of the tubular film inward symmetrically as gussets, folding the folded edges 32d of each gusset into a flat shape so that they are close together, and heat-sealing the appropriate place at the upper end of the folded portion.

[0064] The position of the folded edge 32d of each gusset at the handle portion 32 of the packaging bag 3 is preferably 98% or less, and more preferably 50% or less, of the value calculated by the following formula. If this value is 98% or less, the heat sealability will be good. On the other hand, the lower limit is preferably 10% or more, more preferably 15% or more, and even more preferably 20% or more. If this value is 10% or more, the film tension can be maintained appropriately even after packaging the roll product 2, so the packaging bag 3 will be less likely to tear. The total width (L) of the handle portion 32 and the length (l) from one end of the handle portion 32 in the width direction to the folded edge 32d of the gusset on the same side (hereinafter also referred to as "one-side gusset folded length l") are measured with the packaging bag 3 folded. (Formula) (Length of gusset fold on one side) ÷ (Total width of handle section 32 L ÷ 2) × 100 (%)

[0065] As shown in Figure 2, the handle portion 32 is a roughly rectangular, flattened section in which the seal line 32b is integrated and fixed by heat sealing. Furthermore, it is preferable that the handle portion 32 is provided with a finger hole 32c for the consumer to use when carrying the product home after purchase. It is even more preferable to leave a non-cutout section below the finger hole 32c. Leaving a non-cutout section on the bottom makes the handle portion 32 less likely to tear from the finger hole 32c.

[0066] Furthermore, it is preferable that one or more reinforcing films (not shown) with perforations (not shown) or slits (not shown) similar to those of the finger-holding holes 32c are heat-sealed to the handle portion 32.

[0067] The main body 31 of the packaging bag 3 has an opening at the bottom, into which the roll product 2 is placed, and then the opening 31a is sealed with heat. When the roll product 2 is placed inside, the gusset of the main body 31 is unfolded, and the main body 31 forms four sides with a rectangular cross-section. The packaging bag 3 preferably has a ventilation section to avoid the film from bursting during manufacturing, such as an intermittent section in the seal line 32b of the handle 32, or an opening in the main body 31 or the handle 32, and it is more preferable to have an intermittent section in the seal line 32b of the handle 32.

[0068] The "openings" provided in the main body 31 and handle 32 are composed of, for example, a notched piece and a small hole formed when the notched piece protrudes outward, and function as a valve. Specifically, for example, when the inside of the packaging 1 expands or is compressed by external pressure, the notched piece opens (protrudes), allowing the air inside the packaging 1 to escape outward through the small hole. After the air has been released, the restoring force of the base end of the notched piece causes it to return to its original position and close, thus performing a valve-like operation in the "openings".

[0069] (Film structure) The film used for the packaging bag 3 is a multilayer film, as shown in Figure 2, comprising at least thermoplastic resin films 3A and 3C as the outermost layers and a gas barrier resin film 3B as the middle layer. Here, the outermost layers of the film refer to the surfaces on both sides of the surface layer 3A and the back layer 3C, with the surface layer 3A being the surface in contact with the outside of the packaging body 1 and the back layer 3C being the surface in contact with the inside of the packaging body 1.

[0070] Figure 2 shows a three-layer structure with a surface layer 3A, a middle layer 3B, and a back layer 3C laminated together. However, it may also be a multilayer film of four or more layers, with layers of other materials between the surface layer 3A and the middle layer 3B, or between the middle layer 3B and the back layer 3C. Examples of layers of other materials include a water vapor barrier layer, a printing layer, a printability improving layer, an overprint layer, a light-shielding layer, etc. In the present invention, it is preferable from the viewpoint of heat sealability to laminate only thermoplastic resin films (3A and 3C) and a gas barrier resin film (3B), without layers of other materials.

[0071] (Thermoplastic resin film) The outer layer 3A and inner layer 3C of the packaging bag 3 are made of polyolefin resin. Using polyolefin resin allows for easy manufacturing of the packaging bag 3, provides good heat sealability, and is resistant to impact. Among polyolefin resins, polyethylene (PE) is preferred, and low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and a mixture of low-density polyethylene and linear low-density polyethylene (LDPE + LLDPE) are even more preferred.

[0072] The surface layer 3A and the back layer 3C may be made up of different materials, as long as they are polyolefin resins. For example, multilayer polyolefin resins made from LDPE, LLDPE, or a mixture of LDPE and LLDPE may be used for the surface layer 3A and the back layer 3C. That is, multilayer (5-layer) films of LDPE / LDPE / NY / LDPE / LDPE, multilayer (5-layer) films of LLDPE / LDPE / NY / LDPE / LLDPE, multilayer (4-layer) films of LLDPE / NY / LDPE / LLDPE, etc., can be used.

[0073] (Gas barrier resin film) The middle layer 3B of packaging bag 3 is nylon (NY). If the middle layer 3B were made of polyolefin instead of nylon, for example, its oxygen permeability would be higher, making it more susceptible to odor transfer and resulting in poorer odor blocking. If it were made of EVOH, its strength would be lower and it would tear more easily.

[0074] (Thickness of the middle layer) The thickness of the middle layer 3B is preferably between 2 μm and 20 μm. If the thickness of the middle layer 3B is less than 2 μm, the oxygen permeability will be high, making it easier for odors to transfer and resulting in poor odor blocking. If the thickness of the middle layer 3B exceeds 20 μm, the film 3 will become stiff and difficult to heat seal, leading to packaging defects. The lower limit of the thickness of the middle layer 3B is more preferably 3 μm or more, and even more preferably 4 μm or more. The upper limit is more preferably 16 μm or less, and even more preferably 12 μm or less. The thickness of the middle layer 3B can be observed and measured by observing the cross-section of the film 3 with an optical microscope. If the thickness of the middle layer 3B cannot be measured from the product, the thickness of the middle layer 3B alone before lamination into three layers should be measured in accordance with JIS K 7130.

[0075] (Overall thickness) The thickness of the packaging bag (film) 3, that is, the thickness of the three laminated layers (hereinafter also referred to as "total thickness"), is preferably 15 μm or more and 70 μm or less. If the total thickness is less than 15 μm, the film 3 becomes easily torn, and if it exceeds 70 μm, the film 3 becomes stiff and difficult to heat seal, making packaging defects more likely. The lower limit of the total thickness is more preferably 20 μm or more, and even more preferably 25 μm or more. The upper limit is more preferably 65 μm or less, and even more preferably 60 μm or less. The thickness of the packaging bag (film) 3 shall be measured in accordance with JIS K 7130 and shall be used as the thickness of the packaging bag (film) 3.

[0076] (Thickness of the middle layer / Total thickness) The ratio of the thickness of the middle layer 3B to the total thickness of the packaging bag (film) 3, i.e., (thickness of middle layer 3B ÷ total thickness × 100), is preferably 35% or less, more preferably 30% or less, and even more preferably 25% or less. If this ratio exceeds 35%, the heat sealability of the packaging bag 3 will be poor and packaging defects will be more likely if the middle layer 3B is thick, and the packaging bag 3 will be more prone to tearing if the film as a whole is thin. On the other hand, the lower limit is preferably 3% or more, more preferably 6% or more, and even more preferably 8% or more. If this ratio is less than 3%, odor transfer will be more likely and odor blocking will be poor if the middle layer 3B is thin, and heat sealability will be poor and packaging defects will be more likely if the film as a whole is thick.

[0077] (Film basis weight) The basis weight of packaging bag (film) 3 (hereinafter also referred to as "film basis weight") has a lower limit of 14 g / m². 2 The above is preferable, 18 g / m 2 The above is more preferable: 22 g / m 2 The above is even more preferable. The upper limit is 63 g / m². 2 The following is preferable: 59 g / m 2 The following is more preferable: 54 g / m 2 The following is even more preferable: Film basis weight is 14 g / m². 2 If it is less than 63g / m², the packaging bag 3 will tear easily. 2 If the temperature exceeds a certain point, film 3 may become stiff or difficult to heat seal, leading to a higher likelihood of packaging defects.

[0078] (Oxygen permeability) The oxygen permeability of packaging bag (film) 3 is 1000 cc / m². 2 The oxygen permeability is less than 1000 cc / m³. 2 Above 700 cc / m³, odor transfer becomes more likely, and odor blocking performance deteriorates. 2 • Day ATM or less is preferred, and 400cc / m 2 A value of less than 0.5 cc / m³ is preferable. On the other hand, the lower limit of oxygen permeability is 0.5 cc / m³. 2 • ☐·atm or higher is preferable, and 0.8 cc / m³ 2• 1.0 cc / m² or higher is preferable. 2 A pressure of 0.5 cc / m³ or higher is even more preferable. 2 If the oxygen permeability is less than 1 / day·atm, increasing the thickness or basis weight of film 3 to lower the oxygen permeability will cause film 3 to become stiffer and more difficult to heat seal, leading to a higher likelihood of packaging defects. Oxygen permeability can be measured according to JIS K 7126-1987 (Test method for gas permeability of plastic films and sheets).

[0079] (Tensile breaking strength) <md>) Tensile breaking strength of film 3 in the MD direction (hereinafter simply referred to as "tensile breaking strength") <md>The tensile strength (also known as ") is preferably 25 MPa to 65 MPa. <md>However, if the tensile strength is less than 25 MPa, the packaging bag 3 becomes prone to tearing, and if it exceeds 65 MPa, the packaging bag 3 becomes stiff and difficult to heat seal when the thickness or basis weight of the film 3 is increased, making packaging defects more likely. Tensile breaking strength <md>The lower limit is more preferably 28 MPa or higher, and even more preferably 30 MPa or higher. The upper limit is more preferably 60 MPa or lower, and even more preferably 55 MPa or lower.

[0080] (Tensile breaking strength) The tensile breaking strength in the TD direction of film 3 (hereinafter also simply referred to as "tensile breaking strength") is preferably 20 MPa or more and 55 MPa or less. If the tensile breaking strength is less than 20 MPa, the packaging bag 3 will tear easily, and if it exceeds 55 MPa, the packaging bag 3 will become stiff or difficult to heat seal when the thickness or basis weight of film 3 is increased, making packaging defects more likely. The lower limit of the tensile breaking strength is more preferably 23 MPa or more, and even more preferably 25 MPa or more. The upper limit is more preferably 50 MPa or less, and even more preferably 45 MPa or less.

[0081] (tensile elongation at fracture) <md>) Tensile elongation at break of film 3 in the MD direction (hereinafter simply referred to as "tensile elongation at break") <md>The tensile elongation at break (also known as ") is preferably between 200% and 480%. <md>However, if the tensile strength is less than 200%, the packaging bag 3 becomes prone to tearing, and if it exceeds 480%, the packaging bag 3 becomes stiff and difficult to heat seal when the thickness or basis weight of the film 3 is increased, making packaging defects more likely. <md>The lower limit is more preferably 230% or higher, and even more preferably 250% or higher. The upper limit is more preferably 450% or lower, and even more preferably 420% or lower.

[0082] (Tensile elongation at fracture) The tensile elongation at break in the TD direction of film 3 (hereinafter also simply referred to as "tensile elongation at break") is preferably 310% or more and 690% or less. If the tensile elongation at break is less than 310%, the packaging bag 3 will tear easily, and if it exceeds 690%, the packaging bag 3 will become stiff or difficult to heat seal when the thickness or basis weight of film 3 is increased, making packaging defects more likely. The lower limit of the tensile elongation at break is more preferably 350% or more, and even more preferably 390% or more. The upper limit is more preferably 650% or less, and even more preferably 610% or less.

[0083] Tensile breaking strength <md>, and tensile elongation at fracture <md>This can be measured according to JIS Z 1702.

[0084] The multilayer film of film 3 can be manufactured by any commonly used manufacturing method, such as the T-die method or the lamination method. The inflation method is preferable from a cost perspective because it can be manufactured in film form and also formed into a bag form.

[0085] The multilayer film of film 3 may contain one or more additives such as antistatic agents, lubricants, UV absorbers, and colorants, which are suitable for bag making, printing, filling, and other processes.

[0086] [4] Roll product packaging The roll product packaging 1 contains multiple roll products 2 stored in a packaging bag 3. For example, Figure 1 is a perspective view of a roll product packaging 1 in which four roll products 2 are arranged in two rows vertically and horizontally, and these are stacked in two layers with the axes of the cores 2d of the roll products 2 aligned vertically, resulting in a total of eight roll products 2 stored in a packaging bag 3. The roll product packaging 1 of the present invention is not limited to the example shown in Figure 1, and can be obtained by storing any number of roll products 2 in any way in the packaging bag 3 of the present invention.

[0087] (Number of rolls packaged) The number of rolls 2 packaged in the packaging 1 is preferably 2 or more, more preferably 3 or more, and even more preferably 4 or more. The upper limit is preferably 12 or less, more preferably 10 or less, and even more preferably 8 or less. If the number of rolls is less than 2, the compactness of each pack of packaging 1 is poor. If the number of rolls exceeds 12, the total mass of the packaged rolls 2 increases, making the packaging bag 3 of packaging 1 more prone to tearing.

[0088] (Total mass of the rolls to be packaged) The total mass of the rolls 2 packaged in the packaging 1 (hereinafter also simply referred to as "mass M" or "total roll mass") is 450g or more and 2200g or less. If the total roll mass is less than 450g, the compactness of each pack of packaging 1 is poor. If the total roll mass exceeds 2200g, the packaging bag 3 becomes prone to tearing. The lower limit of the total roll mass is preferably 600g or more, and more preferably 750g or more. The upper limit is preferably 1600g or less, and more preferably 1200g or less.

[0089] (Total roll mass / Tensile breaking strength) <md>) The value obtained by dividing the total roll mass (g) by the tensile breaking strength (MPa) of the packaging bag (film) 3 in the MD direction is preferably between 14 and 42. If this value is less than 14, the compactness of the packaging 1 will be poor when the total roll mass is low. If this value exceeds 42, the packaging bag 3 will be prone to tearing. The lower limit of this value is preferably 17 or higher, and more preferably 20 or higher. The upper limit is preferably 38 or lower, and more preferably 34 or lower.

[0090] (Tensile breaking strength) <md>(roll density) The tensile breaking strength (MPa) of film 3 in the MD direction is determined by the roll density (g / cm³). 3 The value obtained by dividing by () is preferably between 105 and 320. If this value is less than 105, the packaging bag 3 of the packaging body 1 will tear easily if the tensile breaking strength of the film 3 is low or if the roll density is high and the total roll mass is large. If this value exceeds 320, the compactness of the packaging body 1 will be poor if the roll density is low, and if the overall thickness of the film 3 or the thickness of the middle layer 3B is large, it will become difficult to heat seal and packaging defects will be more likely to occur. The lower limit of this value is more preferably 110 or higher, and even more preferably 115 or higher. The upper limit is more preferably 270 or lower, and even more preferably 220 or lower.

[0091] <Manufacturing method for rolled products> The roll product 2 can be manufactured, for example, in the following order: (1) papermaking and creping, (2) embossing and bonding as needed, (3) roll winding, and (4) cutting with a log saw. The following describes the process of (1).

[0092] (Papermaking and creping) (1) Paper is made from the pulp described above on the wire section of a known paper machine, and then transferred to the felt of the press section. Examples of wire section types include circular wire type, long wire (ford linear) type, suction breast type, short wire type, twin wire type, crescent former type, etc. (2) Then, the web is mechanically compressed with a suction pressure roll, a pressure roll without suction, or a press roll, or dewatering is continued by employing a dewatering method such as hot air drying. The suction pressure roll or the pressure roll without suction is also used as a means to move the web from the press part to the Yankee dryer. (3) The webs that have been moved to the Yankee Dryer are dried in the Yankee Dryer and Yankee Dryer Hood, then creped by a creping doctor and wound up in a reel part. (4) Creping (creating wavy wrinkles known as crepes) is the mechanical compression of paper in the longitudinal direction (the direction in which the sheet travels on the paper machine). When manufacturing the web of 2x sheets of sanitary tissue paper, the creping doctor peels the web off the Yankee dryer and winds it up on the reel part. Due to the speed difference between the Yankee dryer and the reel part (speed of the reel part ≤ speed of the Yankee dryer), the crepes (wrinkles) are formed by the creping doctor.

[0093] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be obvious to those skilled in the art that various modifications or improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention. [Examples]

[0094] 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.

[0095] The roll product packaging of toilet rolls (hereinafter also referred to as "the present invention") of the examples and comparative examples shown in Tables 1 and 2 was manufactured through the following processes: (1) papermaking and creping, (2) embossing and joining, (3) roll winding, (4) cutting with a log saw, and (5) storage in packaging bags. No fragrance was added (applied) to the roll products. The above parameters (dimensions, mass, physical properties, etc.) were measured for all of the present invention products, and the following evaluations were performed.

[0096] 1. Odor blocking properties The "odor-blocking properties" of the present invention were evaluated by 30 monitors using 30 packs of the roll product packaging after manufacturing. Specifically, one pack of the present invention (roll product packaging) and four unpackaged scented roll products were placed in a 1 m³ volume container with the packaging bag handles folded down. 3 The products were sealed in cardboard boxes and stored for two weeks at 23°C and 50% RH. After that, the products were removed from the cardboard boxes, the packaging bags were opened, and 30 monitors smelled all the roll products and selected either "no fragrance transfer" or "fragrance transfer." The number of people who selected "fragrance transfer" was used to evaluate the products on a four-point scale, with a score of △ or higher considered a pass. The evaluation criteria are as follows. ◎: 0 people selected "The fragrance has transferred to the scent." ○: 1-2 people selected "The fragrance has transferred to the other items." △: 3-4 people selected "The fragrance has transferred to the product." ×: Five or more people selected "The fragrance has transferred to the scent."

[0097] 2. The tear resistance of the packaging bag. The "tear resistance of the packaging bag" of the present invention was tested on 30 roll product packaging units after manufacturing, using an inspection conducted by one monitor. The monitor held an unopened product (roll product packaging unit) with a finger inserted into the finger hole of the handle and shook it up and down 50 times at a constant speed. The monitor selected either "no tear in the packaging bag (film)" or "tear occurred in the packaging bag (film)," and evaluated the product on a 4-point scale based on the number of products for which "tear occurred in the packaging bag (film)," with a score of △ or higher considered a pass. The evaluation criteria are as follows. ◎: The number of products for which "The packaging bag (film) has been torn" was selected is 0. ○: 1 to 3 packs of products selected as "Tears occurred in the packaging bag (film)." △: 4-6 packs of products selected as "Tears occurred in the packaging bag (film)." ×: 7 or more product packs selected as "Tears occurred in the packaging bag (film)."

[0098] 3. Compactness of the packaging The "compactness of the packaging" of the present invention is compared to the "roll density (g / cm³)" of the roll product. 3 Based on the measurement results of ), the following evaluation criteria were used to evaluate the product on a four-point scale, with a score of △ or higher considered a pass. ◎ : (Roll density) ≥ 0.19 ○ : 0.19 > (roll density) ≥ 0.15 △ : 0.15 > (roll density) ≥ 0.11 × :0.11>(roll density)

[0099] 4. Heat sealability of packaging bags The heat-sealability of the packaging bag of the present invention was evaluated by a single monitor using a visual inspection of 30 roll product packaging units after manufacturing. The "opening of the main body" and the "seal line of the handle" of the present invention (roll product packaging unit) were visually inspected, and either "no openings in part or all of the seal area" or "some openings in part or all of the seal area" were selected. The evaluation was based on the number of products selected as having "some openings in part or all of the seal area" on a 5-point scale, with a score of ▲ or higher considered a pass. The evaluation criteria are as follows. ◎ : 0 packs ○: 1-2 packs △: 3-4 packs ▲: 5-6 packs ×: 7 packs or more

[0100] The results obtained are shown in Tables 1 and 2.

[0101] [Table 1]

[0102] [Table 2]

[0103] As is clear from the results shown in Tables 1-2, the roll product packaging of Examples 1-20 exhibited good odor blocking, tear resistance, compactness, and heat-sealability. In contrast, Comparative Examples 1-8 were inferior in one or more of the following areas: odor blocking, tear resistance, compactness, and heat-sealability.

[0104] From the above, it has been confirmed that the present invention can provide a roll product packaging that is fragrance-free, long in length, does not transfer odors (excellent odor blocking properties), suppresses film tearing, is compact, and also has good heat-sealability. [Explanation of symbols]

[0105] 1: Roll product packaging (packaging) 2: Roll products (rolls) 2a: Surface sheet 2b: Sheet on the back 2c: Perforation 2d:Paper tube 2e: The outermost edge of the roll product 2x: Sanitary tissue paper (sheets) 3: Packaging bag (film) 3A: Thermoplastic resin film (surface layer) 3B: Gas barrier resin film (middle layer) 3C: Thermoplastic resin film (backing layer) 31: Main body 31a: Opening 32: Handle part 32a: Perforations for opening 32b: Seal line 32c: Finger hole 32d: Folded edge of gusset< / md> < / md> < / md> < / md> < / md> < / md> < / md> < / md> < / md> < / md> < / md> < / md>

Claims

1. A roll product packaging in which multiple roll products, each consisting of a sheet of sanitary tissue paper wound into a roll, are stored in a gusset packaging bag made of film, The aforementioned roll product is Fragrance-free, Roll density is 0.11 g / cm³ ３ 0.32g / cm or more ３ The following: The aforementioned film is A multilayer film having at least a polyolefin as the outermost layer and nylon as the middle layer, Oxygen permeability of 1000 cc / m³ ２ - less than or equal to the daily ATM, The total mass of the roll product packaged in the gusseted packaging bag is 450g or more and 2200g or less. A roll-type product packaging characterized by the following features.

2. The roll product packaging according to claim 1, characterized in that the thickness of the nylon is 35% or less of the thickness of the film.

3. The roll product packaging according to claim 1 or 2, characterized in that the nylon has a thickness of 2 μm or more and 20 μm or less.

4. The roll product packaging according to claim 1 or 2, characterized in that the film has a thickness of 15 μm or more and 70 μm or less.

5. The roll product packaging according to claim 1 or 2, characterized in that the film has a tensile breaking strength in the MD direction of 25 MPa or more and 65 MPa or less.

6. The roll product packaging according to claim 1 or 2, characterized in that the film has a tensile breaking strength in the TD direction of 20 MPa or more and 55 MPa or less.

7. The roll product packaging according to claim 1 or 2, characterized in that the film has a tensile elongation at break of 200% or more and 480% or less in the MD direction, and a tensile elongation at break of 310% or more and 690% or less in the TD direction.

8. The aforementioned sanitary tissue paper sheet has a basis weight of 10.0 g / m² per ply. ２ 21.0g / m or more ２ The following: The roll product packaging according to claim 1 or 2, characterized in that the roll product has a (roll length × number of product plies) of 60 or more.

9. The roll product packaging according to claim 1 or 2, characterized in that the roll product has a roll length of 30 m or more and 155 m or less.

10. The roll product packaging according to claim 1 or 2, characterized in that the value of (total mass of the roll product (g) ÷ tensile breaking strength of the film in the MD direction) is 14 or more and 42 or less.

11. The roll product packaging according to claim 1 or 2, characterized in that the value of (tensile breaking strength in the MD direction ÷ roll density) is 105 or more and 320 or less.

Images