Tissue paper storage box package

Abstract

To satisfy both of reducing films of a tissue paper storage box package and ensuring seal strength.SOLUTION: A tissue paper storage box package according to the present disclosure comprises: a plurality of tissue paper storage boxes 20 vertically stacked on top of each other; an exterior film 30 for packaging the plurality of tissue paper storage boxes 20; and a handle film 40 with both ends 40b welded to the exterior film 30 covering a pair of both side faces 20e of a predetermined tissue paper storage box 20A, serving as a handle when being carried. Both the ends 40b of the handle film 40 are welded by a plurality of heat seal parts 50 arranged in a direction extending in a vertical direction and crossing the vertical direction with respect to the exterior film 30. The heat seal parts 50 adjacent to each other are different in height position of an upper edge 50U from each other, and different in height position of a lower edge 50D from each other. A vertical distance between the upper edges 50U of the heat seal parts 50 adjacent to each other, and a vertical distance between the lower edges 50D thereof are 2 mm or more and 5 mm or less.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to tissue storage box packaging. [Background technology]

[0002] Generally, most general-purpose tissues and other thin papers are stored in paperboard tissue storage boxes, and multiple (e.g., 5) of these tissue storage boxes are stacked and wrapped in film. Most of these packaging forms are tightly wrapped in caramel, with a handle film for portability heat-sealed to the exterior film.

[0003] In recent years, there has been a demand to reduce the use of petroleum-derived packaging materials. One possible way to reduce the use of petroleum-derived packaging materials is to make the exterior and handle films of tissues thinner. However, the exterior and handle films need to be able to withstand the weight of the product when it is held by the handle film and carried, as well as the load during transportation.

[0004] Patent Document 1 discloses an article accumulation package with a handle, which comprises a package in which a group of cylindrical objects arranged in an even number of rows is wrapped in a heat-shrinkable film, the group of objects being tightly packaged together by the heat-shrinkage force, and a handle for carrying the package, characterized in that the entire circumference of the group of objects in the package in the row direction is wrapped with a handle made of a soft film. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-331148 A Summary of the Invention [Problem to be solved by the invention]

[0006] Many of the films used in tissue paper storage box packages, which are made by wrapping multiple tissue paper storage boxes in film, are manufactured by the inflation method, and many of them have different directional properties (MD and TD). For this reason, it is desirable to design the welding part between the exterior film and the handle film with consideration of the directional properties (making them the same directional properties). However, depending on the shape of the product, it may not be possible to create a packaging form that takes the directional properties into consideration. For example, in a storage box package in which multiple storage boxes (e.g., five boxes) containing tissues are stacked and wrapped in film, the directional properties of the exterior film and the handle film may differ. For this reason, if the exterior film and handle film of the tissue are made thinner in order to reduce petroleum-based packaging materials, the strength of the seal part that fixes the handle film to the exterior film (hereinafter referred to as "seal strength") may be reduced, and there is a risk that it will not be able to withstand the weight of the product when it is held by the handle film and the load when it is moved.

[0007] In the article-accumulating package with handle described in Patent Document 1, no consideration is given to achieving both a reduction in the amount of petroleum-derived packaging materials (films) and ensuring the seal strength.

[0008] Therefore, an object of the present disclosure is to provide a tissue paper storage box packaging body that can achieve both a reduction in film and ensuring sealing strength. [Means for solving the problem]

[0009] In order to solve the above problems, the tissue paper storage box packaging of the first aspect of the present invention comprises a plurality of tissue paper storage boxes stacked on top of each other and containing tissue paper, an exterior film packaging the plurality of tissue paper storage boxes, and a handle film whose both ends are welded to the exterior film covering both side surfaces that form a pair of a specific tissue paper storage box among the plurality of tissue paper storage boxes and function as a handle when carrying the box, and both ends of the handle film are welded to the exterior film by a plurality of heat seal portions that extend in the vertical direction and are arranged in a direction that intersects with the vertical direction, and adjacent heat seal portions of the plurality of heat seal portions have upper ends that are different in height position and lower ends that are different in height position, and the vertical distance between the upper ends of adjacent heat seal portions and the vertical distance between the lower ends is 2 mm or more and 5 mm or less.

[0010] A second aspect of the present invention is a tissue paper storage box packaging body of the first aspect described above, wherein the width of the heat-sealed portion is 1 mm or more and 2 mm or less, and the distance between adjacent heat-sealed portions is 1 mm or more and 3 mm or less.

[0011] A third aspect of the present invention is the tissue paper storage box packaging body of the first aspect or the second aspect, wherein the total area of ​​the plurality of heat-sealed portions is 400 mm 2 More than 600mm 2 The following is the result.

[0012] A fourth aspect of the present invention is a tissue paper storage box packaging body of the first aspect or the second aspect described above, wherein the distance between the uppermost ends of the plurality of heat-sealed portions and the upper edge of the side of the specified tissue paper storage box is 5 mm or more and 27 mm or less, and the distance between the lowermost ends of the plurality of heat-sealed portions and the lower edge of the side of the specified tissue paper storage box is 5 mm or more and 27 mm or less. Effect of the Invention

[0013] According to the present disclosure, it is possible to reduce the amount of film used in the tissue paper storage box packaging while ensuring the seal strength. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is an explanatory diagram of a tissue paper storage box packaging body. [Diagram 2] FIG. 2 is an external perspective view of a tissue paper storage box. [Diagram 3] 1 is an external perspective view of a tissue paper storage box package according to one embodiment of the present invention; [Figure 4] 4 is an enlarged view of a portion IV of the tissue paper storage box packaging body of FIG. 3. [Diagram 5] 1 is an explanatory diagram of the manufacturing process for tissue paper storage box packaging, where (a) shows the process of packaging multiple tissue paper storage boxes with an exterior film, and (b) shows the process of attaching a handle film. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, UP indicates the upward direction, X indicates the longitudinal direction of the tissue paper storage box, and Y indicates the lateral direction of the tissue paper storage box.

[0016] Fig. 1 is an explanatory diagram of a tissue paper storage box package. Fig. 2 is an external perspective view of a tissue paper storage box. Fig. 3 is an external perspective view of a tissue paper storage box package according to one embodiment of the present invention. Fig. 4 is an enlarged view of part IV of the tissue paper storage box package in Fig. 3. Fig. 2 illustrates the tissue paper storage box in a state in which the tissue paper has been pulled out.

[0017] [Tissue paper storage box packaging] As shown in Fig. 1, the tissue paper storage box packaging 10 according to the present disclosure is a tissue paper storage box packaging 10 in which a plurality of tissue paper storage boxes 20 are stacked one on top of the other and wrapped in an exterior film 30. A handle film 40 that functions as a handle for portability is fixed to the exterior film 30 of the tissue paper storage box packaging 10. When moving the tissue paper storage box packaging 10, a worker can carry it by gripping the handle film 40, as shown in Fig. 1.

[0018] (Tissue paper storage box) As shown in Fig. 2, the tissue paper storage box 20 is a box that stores tissue paper 21 (tissues in this embodiment) inside. The tissue paper storage box 20 is a box having a top surface 20a having an outlet 22 for the tissue paper 21, a bottom surface 20b facing the top surface 20a, and four side surfaces 20c, 20d, 20e, and 20f that connect the top surface 20a and the bottom surface 20b. The tissue paper storage box 20 is formed into a box shape by folding the flaps (not shown) of the top surface 20a, the bottom surface 20b, and the four side surfaces 20c, 20d, 20e, and 20f from a single sheet of material called a carton blank, and bonding the abutting portions of the flaps with a hot melt adhesive or the like. The multiple tissue paper storage boxes 20 are stacked so that the bottom surface 20b faces the top surface 20a of the other tissue paper storage boxes 20. In this embodiment, five tissue paper storage boxes 20 are stacked in a row one above the other, with the top surface 20a serving as the upper surface and the bottom surface 20b serving as the lower surface, and are wrapped in an exterior film 30.

[0019] In the following description, the longitudinal direction of the top surface 20a through which the outlet 22 extends is referred to as the "X direction," and the transverse direction perpendicular to the longitudinal direction of the top surface 20a is referred to as the "Y direction." In addition, the direction in which multiple tissue paper storage boxes 20 are stacked is referred to as the up-down direction.

[0020] (tissue paper) The tissue paper 21 is stored in a stacked state in the internal space of the tissue paper storage box 20 so that it can be popped up and removed from the outlet 22 on the top surface 20a of the tissue paper storage box 20. The tissue paper 21 is preferably a two-ply tissue, and is preferably prevented from peeling by knurling (crimper, edge embossing) processing or the like. The tissue paper 21 of this embodiment is a two-ply tissue that is folded alternately so that it can pop up using a multi-folder type processing machine, and the direction of the tissue paper 21 taken out from the outlet 22 of the tissue paper storage box 20 is the CD (Cross Direction) direction (direction perpendicular to the MD (Machine Direction) direction). The tensile strength of the tissue paper 21 in the pull-out direction (CD direction in this embodiment) is preferably 100 gf / 25 mm or more and 200 gf / 25 mm or less to ensure a suitable usability and texture. In this embodiment, the tissue paper 21 is processed using a multi-folder type processing machine, but this is not limited to this and the tissue paper 21 may be processed using a rotary type interfolder processing machine.

[0021] (Exterior film) As shown in Fig. 3, the exterior film 30 is a resin film that packages multiple stacked tissue paper storage boxes 20. The exterior film 30 covers the multiple stacked tissue paper storage boxes 20 in all directions (both above and below, both sides in the X direction, and both sides in the Y direction).

[0022] Examples of resin films used for the exterior film 30 include LDPE (low density polyethylene), LLDPE (linear low density polyethylene), HDPE (high density polyethylene), CPP (unoriented polypropylene), and films obtained by blending or mixing these materials. Also, these films may be laminated, coated, or multi-layered with different materials. Examples of the different materials include OPP (oriented polypropylene), EVOH (ethylene vinyl alcohol copolymer), Ny (nylon), PET (polyethylene terephthalate), and PVDC (polyvinylidene chloride).

[0023] (Handle film) As shown in Figs. 3 and 4, the handle film 40 is a resin film that functions as a handle to be held when carrying the tissue paper storage box package 10.

[0024] Examples of resin films used for the handle film 40 include LDPE (low density polyethylene), LLDPE (linear low density polyethylene), HDPE (high density polyethylene), CPP (unoriented polypropylene), and films obtained by blending or mixing these materials. Also, these films may be laminated, coated, or multi-layered with different materials. Examples of the different materials include OPP (oriented polypropylene), EVOH (ethylene vinyl alcohol copolymer), Ny (nylon), PET (polyethylene terephthalate), and PVDC (polyvinylidene chloride).

[0025] The handle film 40 extends long in the X direction (the longitudinal direction of the tissue paper storage box 20), and both ends in the X direction are fixed to the exterior film 30. The middle part 40a of the handle film 40 in the X direction extends in the X direction along the exterior film 30 covering the top surface 20a of the tissue paper storage box 20A located at the topmost position among the multiple tissue paper storage boxes 20, and is not fixed to the exterior film 30. Both sides of the handle film 40 in the X direction are bent downward from both ends of the middle part 40a in the X direction, extend along the side of the exterior film 30, and are welded (fixed) to the exterior film 30 by heat sealing. When gripping the handle film 40, the middle part 40a of the handle film 40 is gripped.

[0026] Both ends 40b in the X direction of the handle film 40 (only one is shown in Figs. 3 and 4) are heat-sealed to the exterior film 30 that covers both side portions (paired side portions) 20e, 20f (see Fig. 2) in the X direction of the multiple tissue paper storage boxes 20. In this embodiment, both ends 40b in the X direction of the handle film 40 are heat-sealed to the exterior film 30 that covers the side portions 20e, 20f of the tissue paper storage box (a specified tissue paper storage box) 20A that is located at the topmost position among the multiple tissue paper storage boxes 20.

[0027] (Seal pattern) As shown in Fig. 4, the seal pattern for welding both ends 40b of the handle film 40 in the X direction to the exterior film 30 is composed of multiple heat seal portions 50 extending in the vertical direction. The multiple heat seal portions 50 are arranged side by side in the Y direction (the short side direction of the tissue paper storage box 20). That is, the multiple heat seal portions 50 extend in the vertical direction and are arranged in a direction intersecting the vertical direction (Y direction). The height positions of the upper ends 50U of the multiple heat seal portions 50 adjacent to each other are different from each other, and the height positions of the lower ends 50D are different from each other.

[0028] In this embodiment, the vertical lengths of the heat-sealed parts 50 are all set to the same length (for example, 30 mm), and adjacent heat-sealed parts 50 are arranged with a vertical offset from each other. The seal pattern of this embodiment is composed of eleven heat-sealed parts 50, including a plurality of heat-sealed parts 50a arranged at a first position, which is the lowest position, a plurality of heat-sealed parts 50b arranged at a second position above the first position, and a plurality of heat-sealed parts 50c arranged at a third position, which is the highest position above the second position. Specifically, the seal pattern of this embodiment is arranged in the order of heat-sealed part 50b, heat-sealed part 50c, heat-sealed part 50b, heat-sealed part 50a, and heat-sealed part 50b, in both directions (directions moving away from the center) from one heat-sealed part 50a located at the center in the Y direction of both ends 40b of the handle film 40 to both outer sides in the Y direction. That is, if the upper ends 50U (or lower ends 50D) of the heat-sealed portions 50 are connected to each other by imaginary lines, a wave-like shape with repeated peaks and valleys is obtained.

[0029] The vertical distance L1 between the upper ends 50U of the adjacent heat-sealed parts 50 and the vertical distance L2 between the lower ends 50D are preferably 2 mm or more and 5 mm or less. If the distances L1 and L2 are shorter than 2 mm, the heat-sealed parts 50 are more susceptible to the heat of the adjacent heat-sealed parts 50 during heat sealing, and the heat-sealed parts 50 may deteriorate or become brittle. On the other hand, if the distances L1 and L2 are longer than 5 mm, the distances L5 and L6 between the uppermost or lowermost ends of the heat-sealed parts 50 and the upper or lower ends of the side parts 20e and 20f of the tissue paper storage box 20A, which will be described later, may not be sufficiently taken, and the heat-sealed parts 50 may hang on the upper or lower ends of the side parts 20e and 20f (hereinafter sometimes referred to as "carton ends"), and deterioration or brittleness due to pressure bonding may become large partially (linearly). In addition, if the length of the heat-sealed parts 50 is reduced, the sealing area is reduced, making it difficult to ensure a sufficient welding area.

[0030] The width (length in the Y direction) W of each heat-sealed portion 50 is preferably 1 mm or more and 2 mm or less. If the width W of each heat-sealed portion 50 is shorter than 1 mm, it becomes difficult to ensure a sufficient welding area. On the other hand, if the width W of each heat-sealed portion 50 is longer than 2 mm, it becomes difficult to ensure a non-heated portion (a portion that is not thermally deteriorated or embrittled) between the heat seals.

[0031] The distance L3 between adjacent heat-sealed portions 50 of the plurality of heat-sealed portions 50 is preferably 1 mm or more and 3 mm or less. If the distance L3 between adjacent heat-sealed portions 50 is shorter than 1 mm, the heat-sealed portions 50 are more susceptible to the heat of the adjacent heat-sealed portions 50 during heat sealing, and there is a possibility that the heat-sealed portions 50 may deteriorate or become embrittled. On the other hand, if the distance L3 between adjacent heat-sealed portions 50 is longer than 2 mm, a sufficient welding area cannot be secured.

[0032] The total area of ​​the plurality of heat-sealed portions 50 is 400 mm 2 More than 600mm 2 The total area of ​​the plurality of heat-sealed portions 50 is preferably 400 mm 2If the total area of ​​the heat-sealed portions 50 is less than 600 mm2, the required seal strength may not be ensured. 2 If it is made larger than this, the heat-sealed portion 50 will hang over the end of the carton, which may cause localized (linear) deterioration or embrittlement due to crimping, or the handle film 40 may have to be enlarged, which may increase the amount of film used.

[0033] When the multiple heat-sealed portions 50 all have the same vertical length, it is preferable that the vertical distance L4 between the upper end 50U (or lower end 50D) of the uppermost heat-sealed portion 50 (heat-sealed portion 50c in this embodiment) and the upper end 50U (or lower end 50D) of the lowermost heat-sealed portion 50 (heat-sealed portion 50a in this embodiment) is 5 mm or more and 10 mm or less.

[0034] The distance L5 between the uppermost end of the plurality of heat-sealed portions 50 (the upper end 50U of the heat-sealed portion 50c in this embodiment) and the upper edge of the side portion 20e, 20f of the tissue paper storage box 20A is preferably 5 mm or more and 10 mm or less when the height (carton height) of the tissue paper storage box 20A is 45 mm, and is preferably 5 mm or more and 27 mm or less when the height of the tissue paper storage box 20A is 62 mm. The distance L6 between the lowermost end of the plurality of heat-sealed portions 50 (the lower end 50D of the heat-sealed portion 50a in this embodiment) and the lower edge of the side portion 20e, 20f of the tissue paper storage box 20A is preferably 5 mm or more and 10 mm or less when the height of the tissue paper storage box 20A is 45 mm, and is preferably 5 mm or more and 27 mm or less when the height of the tissue paper storage box 20A is 62 mm. That is, the distances L5, L6 are preferably 5 mm or more and 27 mm or less. If the distances L5 and L6 are shorter than 5 mm, the deterioration and embrittlement caused by the pressure bonding between the heat-sealed portion 50 and the carton end will become large in a localized (linear) manner, and the film (exterior film 30 and handle film 40) will be easily broken due to the perforation-like action. On the other hand, if the distances L5 and L6 are longer than 27 mm, the length of the heat-sealed portion 50 must be reduced, making it difficult to ensure a sufficient welding area.

[0035] (Manufacturing process for tissue paper storage box packaging) Next, the manufacturing process of the tissue paper storage box package 10 will be described.

[0036] Fig. 5 is an explanatory diagram of the manufacturing process of the tissue paper storage box package, where (a) shows the process of packaging multiple tissue paper storage boxes with an exterior film, and (b) shows the process of attaching a handle film. In Fig. 5, the dashed line A shows the MD direction of the exterior film 30, the dashed line B shows the TD (Transverse Direction) direction of the exterior film 30, the two-dot dash line C shows the TD direction of the handle film 40, and the two-dot dash line D shows the MD direction of the handle film 40.

[0037] When manufacturing the tissue paper storage box packaging 10, first, a tissue paper storage box 20 product containing tissue paper 21 is manufactured, and then multiple (e.g., five) manufactured tissue paper storage boxes 20 are stacked on top of each other.

[0038] Next, as shown in Fig. 5(a), the exterior film 30 is tightly wrapped around the multiple tissue paper storage boxes 20 to surround the four side portions 20c, 20d, 20e, and 20f of the multiple tissue paper storage boxes 20 stacked on top of each other, forming a cylindrical shape. At this time, the exterior film 30 is wrapped so that the MD direction of the exterior film 30 is the circumferential direction surrounding the four side portions 20c, 20d, 20e, and 20f of the multiple tissue paper storage boxes 20, and the TD direction of the exterior film 30 is the up-down direction of the multiple tissue paper storage boxes 20. With the exterior film 30 tightly wrapped around the multiple tissue paper storage boxes 20, both ends of the exterior film 30 in the MD direction are welded together by heat sealing.

[0039] Next, as shown in Fig. 5(b), both sides in the TD direction of the exterior film 30 protruding from both the top and bottom of the multiple tissue paper storage boxes 20 are folded at positions along the top surface portion 20a located at the uppermost side of the multiple tissue paper storage boxes 20 and the bottom surface portion 20b located at the lowermost side, and are welded by heat sealing. Specifically, of the exterior film 30 protruding from both the top and bottom of the multiple tissue paper storage boxes 20, two opposing flap-shaped sides are folded toward each other, and then another two opposing flap-shaped sides are folded toward each other in the same manner, and these folded parts are sealed by heat fusion or the like. In other words, the multiple tissue paper storage boxes 20 stacked on top of each other are caramel-wrapped with the exterior film 30.

[0040] 5(b), with the middle portion 40a of the handle film 40 aligned with the top surface 20a of the uppermost tissue paper storage box 20A, both sides of the handle film 40 in the X direction are folded downward, and both ends 40b of the handle film 40 are welded to the side of the exterior film 30 by heat sealing in the above-mentioned seal pattern. The MD direction of the handle film 40 at both ends 40b of the handle film 40 aligned with the side of the exterior film 30 is the up-down direction, which is different from the direction of the exterior film 30 (TD direction).

[0041] In the tissue paper storage box package 10 configured as described above, the adjacent heat-sealed portions 50 of the multiple heat-sealed portions 50 have different height positions of the upper ends 50U and different height positions of the lower ends 50D. Therefore, the upper and lower ends of the heat-sealed portion 50 are less susceptible to the heat from the adjacent heat-sealed portions 50 during heat sealing, so deterioration and embrittlement of the heat-sealed portion 50 can be suppressed to a small extent, and the seal strength can be ensured. In this way, the influence of heat during heat sealing can be suppressed, and deterioration and embrittlement of the heat-sealed portion 50 can be suppressed, so that the seal strength can be ensured when each film (exterior film 30 and handle film 40) is made thin.

[0042] Therefore, according to this embodiment, it is possible to reduce the amount of film (exterior film 30 and handle film 40) of the tissue paper storage box package 10 while ensuring the seal strength.

[0043] Although the present invention has been described based on the above embodiment, the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention. EXAMPLES

[0044] The present invention will be described below with reference to examples, but the present invention is not limited to these examples in any way.

[0045] Three tissue paper storage box packages with different seal patterns were created. One of the three tissue paper storage box packages was Example 1, and the remaining two were Comparative Examples 1 and 2.

[0046] 200 sets of 2-ply tissues (two sheets per set) were stored as tissue in each tissue storage box of Example 1 and Comparative Examples 1 and 2. The length in the pulling direction of the tissue (sheet length) was 198 mm, and the length in the width direction (direction intersecting the pulling direction) (sheet width) was 206 mm.

[0047] The basis weight of tissue in each tissue box is 10.4 g / m 2 The basis weight can be measured in accordance with JIS P8124.

[0048] The tissue thickness of each tissue storage box was 0.53 mm / 10 sheets. The tissue thickness can be measured, for example, using a thickness gauge (a dial thickness gauge "PEACOCK" manufactured by Ozaki Manufacturing Co., Ltd.). The measurement conditions were a measurement load of 250 gf and a gauge diameter of 30 mm, with a sample placed between the gauge and the measurement table, and the gauge was read when the gauge was lowered at a speed of 1 mm per second or less. One measurement was performed with 10 sheets of 1 ply stacked together, and the measurement was repeated 10 times to average the measurement results.

[0049] The tensile strength DMDT of the tissue in each tissue storage box in the dry MD direction was 496gf / 25mm, and the tensile strength DCDT of the tissue in the dry CD direction was 144gf / 25mm. The tensile strengths DMDT and DCDT were measured based on JIS P 8113. However, the samples were 25mm wide tissue (2 ply), the pulling speed was 300mm / min, the distance between the grippers was 100mm, and the measurements were taken after maintaining the tissue in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1℃, 50±2%RH).

[0050] The height (carton height) of each tissue paper storage box was 45 mm.

[0051] The weight of the tissue paper storage box packaging of Example 1 and Comparative Examples 1 and 2 was 792 g. The dimensions of each tissue paper storage box packaging were a longitudinal length (pack length) of 228 mm, a lateral length (pack width) of 110 mm, and a height (pack height) of 225 mm.

[0052] The thickness of the exterior film was 21 μm in Example 1 and Comparative Examples 1 and 2. The orientation of the exterior film corresponding to the up-down direction of the tissue paper storage box was the TD (horizontal) direction.

[0053] The thickness of the handle film in Example 1 and Comparative Examples 1 and 2 was 47 μm. The direction of the handle film, which corresponds to the up-down direction of the tissue paper storage box, was MD (lengthwise).

[0054] Example 1 The seal pattern of the portion where the exterior film and the handle film of Example 1 were welded was the seal pattern of the above embodiment. Specifically, the vertical lengths of the multiple heat seal parts extending in the vertical direction were all set to the same length, and adjacent heat seal parts 50 were arranged with a vertical offset from each other. The vertical length of each heat seal part (seal line length) was 30 mm, the width of each heat seal part (seal line width) was 1.5 mm, and the area of ​​each heat seal part (seal line area) was 45 mm. 2 The total area of ​​the heat-sealed parts (seal block area) was 495 mm 2 The vertical distance between the top ends of adjacent heat-sealed parts and the vertical distance between the bottom ends (the vertical distance between adjacent sealed ends) was 2.5 mm. The vertical distance between the top end (or bottom end) located at the uppermost position and the top end (or bottom end) located at the lowermost position among the top ends (or bottom ends) of the multiple heat-sealed parts (the vertical distance of the entire seal pattern) was 5 mm (2.5 mm x 2).

[0055] Comparative Example 1 In the seal pattern of the portion where the exterior film and the handle film are welded in Comparative Example 1, the vertical lengths of the multiple heat-sealed portions extending in the vertical direction are all set to the same length, and all the heat-sealed portions are positioned at the same height. The vertical length of each heat-sealed portion is 30 mm, the width of each heat-sealed portion is 1.5 mm, and the area of ​​each heat-sealed portion is 45 mm. 2 The total area of ​​the heat-sealed parts is 495 mm. 2Adjacent heat-sealed portions were placed at the same height, and the vertical distance between the upper ends and the lower ends of adjacent heat-sealed portions was 0 mm. The vertical distance between the uppermost (or lowermost) and the lowermost (or uppermost) of the upper ends (or lower ends) of the multiple heat-sealed portions (the vertical distance between the top and bottom of the entire seal pattern) was 0 mm.

[0056] Comparative Example 2 In the seal pattern of the portion in Comparative Example 2 where the exterior film and the handle film are welded together, the vertical lengths of the multiple heat-sealed portions extending in the vertical direction are all set to the same length, with the heat-sealed portion at the center in the Y direction being positioned at the lowest, and the heat-sealed portions located on the outer sides in the Y direction being positioned higher up. In other words, if the upper ends (or lower ends) of the heat-sealed portions are connected by imaginary lines, a V-shape is formed. The vertical length of each heat-sealed portion is 30 mm, the width of each heat-sealed portion is 1.5 mm, and the area of ​​each heat-sealed portion is 45 mm. 2 The total area of ​​the heat-sealed parts is 495 mm. 2 The vertical distance between the top ends of adjacent heat-sealed parts and the vertical distance between the bottom ends (the top-to-bottom distance between adjacent sealed parts) was 1 mm. The vertical distance between the top end (or bottom end) located at the uppermost position and the top end (or bottom end) located at the lowermost position among the top ends (or bottom ends) of the multiple heat-sealed parts was 5 mm (1 mm x 5).

[0057] For the tissue paper storage box packages of Example 1 and Comparative Examples 1 and 2 obtained as described above, the breaking strength between the exterior film and the handle film (breaking strength with the handle) was measured as follows.

[0058] The welded area between the exterior film and the handle film was cut off, leaving at least 30 mm from the welded area for the exterior film, and the handle film was cut off at a location at least 100 mm away from the welded area. The handle film and exterior film at the cut-out welded area were fixed to the top and bottom chucks of a Tensilon, respectively, and pulled at a speed of 300 mm / min, and the shear strength until breakage was measured.

[0059] The results obtained are shown in Table 1.

[0060] [Table 1]

[0061] The breaking strength of the exterior film and the handle film in Example 1 was 3.5 kgf. In contrast, the breaking strength of the exterior film and the handle film in Comparative Example 1 was 3.1 kgf, and the breaking strength of the exterior film and the handle film in Comparative Example 2 was 3.2 kgf. Thus, it was confirmed that the breaking strength of the exterior film and the handle film can be improved in the tissue paper storage box package of the present invention.

[0062] From the above, it was confirmed that the tissue paper storage box packaging of the present invention can achieve both a reduction in the amount of film (exterior film and handle film) and the assurance of seal strength. [Explanation of symbols]

[0063] 10: Tissue paper storage box packaging 20: Tissue paper storage box 21: Tissue paper 30: Exterior film 40: Handle film 50: Heat seal section

Claims

1. A plurality of tissue paper storage boxes, each of which stores tissue paper and is stacked on top of another; An exterior film for packaging the plurality of tissue paper storage boxes; and a handle film, both ends of which are welded to the exterior film covering the paired side surfaces of a specific tissue paper storage box among the plurality of tissue paper storage boxes, and which functions as a handle when carried; Both ends of the handle film are welded to the exterior film by a plurality of heat seal portions extending in the vertical direction and arranged in a direction intersecting the vertical direction, The adjacent heat-sealed portions of the plurality of heat-sealed portions have upper ends at different height positions and lower ends at different height positions, The vertical distance between the upper ends of the adjacent heat-sealed portions and the vertical distance between the lower ends of the adjacent heat-sealed portions are 2 mm or more and 5 mm or less. A tissue paper storage box packaging body characterized by the above.

2. The width of the heat-sealed portion is 1 mm or more and 2 mm or less, The distance between the adjacent heat-sealed portions is 1 mm or more and 3 mm or less.

2. The tissue paper storage box package according to claim 1.

3. The total area of ​​the plurality of heat-sealed portions is 400 mm ２ More than 600 mm ２ Is less than or equal to 3. The tissue paper storage box packaging according to claim 1 or 2.

4. The distance between the uppermost end of the plurality of heat-sealed portions and the upper edge of the side of the specified tissue paper storage box is 5 mm or more and 27 mm or less, The distance between the bottom end of the plurality of heat-sealed portions and the bottom edge of the side of the specified tissue paper storage box is 5 mm or more and 27 mm or less.

3. The tissue paper storage box packaging according to claim 1 or 2.

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