JP2004018010A - Hygienic tissue paper storage box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hygienic tissue paper storage box wherein housed kitchen paper can be well taken out, and an opened lid can be easily set to stand immediately after the lid is unsealed and further surely kept standing. <P>SOLUTION: The hygienic tissue paper storage box has the rear face panel 5 connected with the upper face panel 3 via a crease (a), while a part of the upper face panel divided along a breaking line 6 falls backward with the crease as a hinge axis to provide the opened lid 4. The lid has a narrow portion 6b narrowed in the widthwise direction with the vicinity of the hinge axis as the starting end S and with the hinge axis as the terminal end E so that restoring moment in the closing direction by the hinge axis is weakened to keep the opened lid standing. The width of the lid at the terminal end is made narrower than the starting end S. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to a sanitary thin paper storage box such as kitchen paper.
[0002]
[Prior art]
Conventionally, a rectangular parallelepiped paper box 11 as shown in a side view of FIG. 8 has been used for a household sanitary thin paper storage box such as kitchen paper. Then, a part straddling the front panel 9 and the top panel 3 is cut and opened along the breaking line, and the part 4 can be opened and closed using the broken line k with the top panel 3 as the hinge axis h. It is configured to be a part 4. After opening, the lid 4 is opened and closed appropriately, and a plurality of sheet-like kitchen papers folded and stored in the box are taken out and used one by one.
[0003]
[Problems to be solved by the invention]
However, since the storage box 11 has the hinge axis h of the lid 4 on the upper panel 3, the lid 4 is small, so that it is difficult to take out the kitchen paper stored therein. .
[0004]
In addition, since kitchen paper is often used during cooking, it is preferable that the lid portion 4 can be kept open so that the kitchen paper can be taken out with one hand. For protection, it is preferred that the open lid 4 be in a position that allows it to be immediately closed. That is, specifically, it is desirable that the open lid portion 4 can maintain the upright state. This standing state is when the tilting moment Mw around the hinge axis h due to its own weight W acting on the lid 4 center of gravity P tilted rearward and the forward restoring moment Mh due to the rigidity of the hinge axis h itself are balanced. Achieved.
[0005]
However, especially at the initial stage after opening, in addition to the rigidity of the hinge axis h itself, the included angle α between the lid portion 4 and the upper panel 3 supporting the lid portion formed with the hinge axis h interposed therebetween. Is an acute angle, and the restoring moment Mh is too large compared to the tilting moment Mw. For this reason, even if the lid part 4 is tilted backward about the hinge axis h and opened, it is difficult to maintain the upright state because the lid part 4 is returned to the closing direction, and the lid part 4 is opened every time the kitchen paper is taken out. And its use was very inconvenient.
[0006]
The kitchen paper manufacturer also tries to design a lid that can achieve an upright position every time the model of the storage box is changed, but the shape of the lid mainly depends on design, kitchen paper removal, etc. Therefore, it is difficult to perform the adjustment by the lid own weight W and the center of gravity position P accompanied by a change in the lid shape. On the other hand, the rigidity of the hinge shaft h can be changed depending on the basis weight of the paper, but the weight W of the lid also changes with this change, so that the adjustment is extremely difficult.
[0007]
The present invention has been made in view of such conventional problems, and is excellent in taking out the stored kitchen paper, and is easy to set so that the opened lid is in a standing state from the beginning after opening, and It is an object of the present invention to provide a sanitary thin paper storage box that can be reliably set in an upright state.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a sanitary thin paper storage box, wherein the upper panel is connected to the rear panel via a broken line while being partly cut along a break line of the upper panel. However, it is characterized in that the folded part is folded backward using the broken line as a hinge axis to form an open lid.
[0009]
According to the above invention, the lid can be made large by using the hinge axis as a bent line as a corner between the upper panel and the rear panel, and the hygienic thin paper stored in the storage box can be taken out. Becomes easier.
[0010]
Further, since the hinge line is a bent line as a corner between the upper panel and the rear panel, the lid can be easily tilted backward. The reason for this is that, in a state where the lid is tilted rearward, the included angle formed between the lid and the rear panel supporting the lid is obtuse, so that the angle between the lid and the rear panel is obtuse. This is because the applied urging force in the closing direction is reduced. Therefore, it is easy to keep the lid in the upright state from the beginning after opening.
[0011]
According to a second aspect of the present invention, in the sanitary thin paper storage box according to the first aspect, in the sanitary thin paper storage box, a restoring moment in the closing direction by the hinge shaft is reduced to maintain the open lid in the upright state. Therefore, the lid portion has a constricted portion in the width direction starting from the vicinity of the hinge axis and terminating at the hinge axis, and the width of the lid portion at the end is set to be narrower than that at the start. It is characterized by.
[0012]
According to the above invention, the lid has the constricted portion narrowed in the width direction with the hinge axis as the starting end and the hinge axis as the end, while the width of the lid at the end is set to be narrower than the starting end. Therefore, it is possible to freely adjust in the direction of shortening the hinge axis length, which is the lid width at the end, and thus freely adjust in the direction of reducing the restoring moment in the closing direction due to the rigidity of the hinge axis. . In this adjustment, only the constricted portion near the hinge axis changes, so that the shape of the lid does not substantially change. Accordingly, while the tilting moment based on the lid weight and the position of the center of gravity is kept substantially constant, only the restoring moment based on the rigidity of the hinge shaft can be independently changed, whereby the standing state can be easily set.
[0013]
In addition, since the constricted portion is formed over a predetermined range from the start end to the end, the width of the lid portion can be continuously and gently reduced during the predetermined range. Therefore, the break line at the constricted portion can also be set continuously and gently, so that the break line can be cut smoothly at the time of separating and opening the lid portion, and it is easy to open.
[0014]
According to a third aspect of the present invention, in the sanitary thin paper storage box according to any one of the first and second aspects, the lid is formed so as to extend to a front panel connected to the upper panel via a broken line. It is characterized by having.
[0015]
According to the invention, since the lid is formed over the front panel, the opening formed by opening the lid can be enlarged, and the sanitary thin paper stored in the box can be easily taken out. .
[0016]
According to a fourth aspect of the present invention, in the sanitary thin paper storage box according to any one of the first to third aspects, the breaking line on the upper panel is concave or convex at a portion near a front panel on a side edge of the lid. Are formed so as to form a first engaging portion, and both side edges of the upper panel remaining after the lid portion is formed by rupture are provided with a convex or concave second portion as a rupture mark portion of the first engaging portion. An engagement portion is formed correspondingly, and the first engagement portion and the second engagement portion engage with each other when the lid is in a closed state.
[0017]
According to the above invention, since the first engagement portion formed on the lid portion and the second engagement portions formed on both side edges of the upper panel engage with each other in the closed state of the lid portion, the hinge shaft is provided. The lid that tends to rise due to the folding habit can be firmly closed, and the sanitary thin paper in the box can be kept hygienic.
[0018]
According to a fifth aspect of the present invention, in the sanitary thin paper storage box according to any one of the first to fourth aspects, a cutting line for forming a finger hooking recess is set at a tip of the lid. Features.
[0019]
According to the invention, after the lid is formed by breaking, the lid can be opened with one finger by hooking a finger on the finger hooking recess.
[0020]
The invention according to claim 6 is the sanitary thin paper storage box according to any one of claims 1 to 5, wherein the sanitary thin paper storage box has a basis weight of 300 to 450 g / m. ² While the center of gravity of the lid from the hinge axis is 3 to 7 cm, and the weight of the lid per unit length of the hinge axis is 1.0 to 1.5 g / cm. I do.
[0021]
According to the above invention, a general sanitary thin paper storage box, that is, 300 to 450 g / m ² For a storage box that is made of cardboard with a basis weight of 3 cm and the center of gravity of the lid from the hinge axis is 3 to 7 cm, the lid in the open state must be set upright from the beginning after opening. Can be.
[0022]
That is, the case where the lid stands up with the rising angle being the smallest, that is, the basis weight is small 300 g / m. ² Even if the thickness of the cardboard is 3 cm and the distance of the center of gravity is 3 cm, the tilt of the lid by its own weight in the open state because the ratio of the lid weight to the unit length of the hinge shaft is 1.0 g / cm or more. The moment Mw can be made large enough to be comparable to the restoring moment Mh due to the rigidity of the hinge shaft, so that the lid can be raised without closing. On the other hand, the case where the lid is inclined most backward and it is easy to sleep has a large basis weight of 450 g / m. ² Even in the case of thick paper and having a large center-of-gravity distance of 7 cm, since the ratio is set to 1.5 g / cm or less, the tilting moment Mw in the open state does not become too large than the restoring moment Mh. As a result, it is possible to prevent the lid from falling significantly backward.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view of a sanitary thin paper storage box according to a first embodiment of the present invention in a state where a lid is opened, FIG. 2 is a perspective view of the sanitary thin paper storage box before opening, and FIG. It is a side view of the sanitary thin paper storage box in a state. FIG. 4 is an exploded view of the blank for the sanitary thin paper storage box.
[0024]
The storage box 1 according to the present embodiment shown in FIG. 1 has a basis weight of 300 to 450 g / m. ² (A paper made of chemical pulp or laminated paperboard), and after assembling, has a rectangular parallelepiped shape having a width of 250 mm, a depth of 120 mm, and a height of 80 mm.
[0025]
In this box, for example, 75 sets of 198 × 229 mm rectangular kitchen paper in a two-fold state are stacked and stored in the height direction. Then, the lid 4 extending between the front panel 9 and the upper panel 3 is divided along the break line 6 set in the storage box 1 and opened, and after opening, the lid 4 is appropriately opened and closed. Then you can take out the kitchen paper one by one.
It should be noted that the above dimensions are representative values and may be changed as appropriate.
[0026]
FIG. 4 shows a blank of the storage box 1. In this blank, a rear panel 5 and a bottom panel 7 are connected in this order to one of the long sides of the rectangular upper panel 3 via broken lines a and b. On the other hand, a front panel 9 and a glue strip 11 are connected to the other long side of the top panel 3 via broken lines c and d in this order, and the top panel 3, the rear panel 5, the bottom panel 7, and the front panel The folding flaps F3, F5, F7, and F9 are connected to the remaining two sides of the panel 9, respectively.
[0027]
In addition, in order to make it easy to bend, the crease lines a, b, c, and d are ruled by pressing a stainless steel blade with a thickness of 1.6 mm and embossing with a depth of 0.3 mm. This ruled line can give a bent line an appropriate degree of bendability, and can provide a stable bending restoring moment even when opening and closing about 150 times (50 to 150 sets per sheet).
[0028]
In both of the front panel 9 and the upper panel 3, perforations serving as break lines 6 for dividing and forming the lid portion 4 straddling the front panel 9 and the upper panel 3 are symmetrical with respect to the center line in the width direction of the panels 9 and 3. Is set.
[0029]
The appearance of the breaking line 6 is a truncated spade mark formed by cutting the upper part of the spade mark of the playing card horizontally, and the upper side of the spade mark 6 is located on the front panel 9 and the lower part of the spade mark 6 The side is drawn so as to be located on the upper panel 3. However, no perforation is set on the lower edge 6a of the spade mark 6 located on the fold line a, and the lower edge 6a is a hinge shaft for opening and closing the lid 4 after opening shown in FIG. Functions as h.
[0030]
As shown in FIG. 1, even after the formation of the lid 4, the lower end 9 a and both side edges 9 b of the front panel 9 and the side edges 3 b of the upper panel 3 are located on the storage box 1 side. The storage box 1 reliably retains kitchen paper in the box even when the lid 4 is opened.
[0031]
Here, as shown in FIG. 4, the constricted portion 6b of the truncated spade mark 6, which is the break line 6, is formed so that the vicinity of the hinge axis h is the start end S and the hinge axis h is the end end E. The width of the lid of the constricted portion 6b is set to be narrower at the end E than at the start S. Therefore, the length of the hinge shaft, which is the width of the lid at the end E, can be freely set without any constraint in the direction of shortening.
[0032]
In this setting, only the constricted portion 6b near the hinge axis h changes depending on the set value, and the overall shape of the lid 4 does not substantially change. Accordingly, while the tilting moment Mw based on the lid weight W and the center of gravity position P is maintained substantially constant, only the restoring moment Mh based on the hinge shaft rigidity can be independently changed. As a result, the upright angle θ of the lid 4 in the open state shown in FIG. 3 can be changed in one-to-one correspondence with one parameter called the hinge axis length, thereby satisfying the desired upright angle θ. The break line 6 can be easily found.
[0033]
For example, if it is desired that the rising angle θ of the lid 4 is set to be gentle, that is, if the lid 4 is slightly laid down, the hinge shaft length is shortened and the rigidity of the hinge shaft h is weakened, while conversely. If the upright angle θ is to be made steep, the hinge shaft length may be increased to increase its rigidity.
[0034]
Further, as shown in FIG. 4, the constricted portion 6b is formed over a predetermined range from the start end S to the end E, so that the width of the cover portion is continuously and smoothly set within the predetermined range. Can be narrowed down. Therefore, the break line 6 in the constricted portion 6b can also be set continuously and gently, so that the break line 6 can be cut smoothly at the time of separating and opening the lid, so that the lid can be easily opened.
[0035]
As shown in the figure, the break line 6 of the truncated spade mark is set so that the width of the lid is also narrowed near the broken line c with the front panel 9. After the opening shown in FIG. 1, the constricted portion has a concave first engaging portion 4 c on both side edges of the lid portion 4, and a first engaging portion 4 c on both side edges 3 b of the top panel 3. Is formed as a second engagement portion 3c having a convex shape as a trace mark portion. The first and second engagement portions 4c and 3c are lock mechanisms for maintaining the closed lid portion 4 in a closed state. In other words, when the lid 4 is closed, the concave first engagement portion 4c of the lid 4 enters the lower part of the convex second engagement portion 3c and is lightly caught, whereby the lid 4 is firmly closed. It has become so.
[0036]
As shown in FIG. 4, the cutting edge 6d of the breaking line 6 of the cutting spade mark is drawn parallel to the lower edge 9d of the front panel 9 at a predetermined interval. At the center of the width of the mounting edge 6d, a semicircular cut line 6e branched from the mounting edge 6d is set at the perforation so as to form a finger-holding recess 4e for opening and closing operation at the tip of the lid 4. I have.
[0037]
Next, a procedure for assembling the blank into the storage box 1 will be described.
First, the adhesive margin piece 11 is adhered to the bottom panel 7 while folding the blank at the folding lines b and c shown in FIG. Then, after this is raised in the shape of a quadrangular cylinder by the polygonal lines a, b, c, and d, the folding flaps F3, F5, F7, and F9 of one of the openings of the quadrangular cylinder are folded and bonded to form a side opening. To close. Next, after filling the bundle of kitchen paper from the remaining opening, the folding flaps F3, F5, F7, and F9 of the other opening are folded and adhered to close the side opening. Then, a storage box 1 storing kitchen paper as shown in FIG. 2 is completed.
[0038]
Next, the procedure for opening the storage box 1 will be described.
To open the storage box 1, a finger is pushed into the cut-out line 6e of the finger hooking recess shown in FIG. 2 to open the finger hooking recess 4e, and at the same time, the finger hooking recess 4e is pulled upward with the fingertip. Then, the portion from the tip of the lid to the broken line a is sequentially divided along the breaking line 6, that is, as shown in FIG. 1, the lid 4 is divided into both side edges of the front panel 9 and the upper panel 3. The lid 4 is separated while leaving the parts 9a, 9b, 3b, etc., so that the lid 4 is opened and closed with the broken line a as the hinge axis h.
[0039]
After this opening, the lid 4 can be opened with one finger by hooking a finger on the finger hooking recess 4e.
[0040]
In addition, since the bent line a as a corner between the upper panel 3 and the rear panel 5 is used as the hinge axis h of the lid 4, the lid 4 can be formed large, and the storage box 1 can be formed. It becomes easy to take out the sanitary thin paper stored in the inside.
[0041]
Further, since the broken line a is used as the hinge axis h, the lid 4 can be easily tilted backward. The reason for this is that the included angle α formed between the lid 4 and the rear panel 5 supporting the lid 4 with the hinge axis h interposed therebetween when the lid 4 is tilted backward as shown in FIG. This is because the obtuse angle makes the urging force in the closing direction applied from the hinge axis h smaller. Therefore, it is easy to maintain the lid 4 in the upright state from the beginning after opening. In addition, as described above, since the lid portion 4 has been adjusted in advance to reduce the rigidity of the hinge shaft h by setting the hinge shaft length, the cover portion 4 is shown in FIG. 3 from the beginning after opening. As described above, the tilting moment Mw of the lid 4 tilted rearward due to its own weight W and the restoring moment Mh forward due to the rigidity of the hinge shaft h can be balanced, and the lid 4 tilted rearward is in the standing state. Can be maintained.
[0042]
Since the hinge shaft h also functions as a corner of the storage box 1 as shown in FIG. 2, the hinge shaft h usually has a folding habit in the direction of closing the lid 4. In this case, the length of the hinge shaft may be reduced by the length corresponding to the bending habit.
[0043]
In addition, if the length of the hinge axis is reduced, the moment of inertia of the lid 4 around the hinge axis can be relatively increased with respect to the rigidity of the hinge axis h. Even when the lid 4 is tilted rearward, it is difficult for the lid 4 that has fallen rearward to return to the front due to its large moment of inertia, so that the standing state can be stabilized.
[0044]
FIG. 5 is a development view of a blank forming a sanitary thin paper storage box according to the second embodiment of the present invention. Note that the same components as those of the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.
[0045]
The first embodiment differs from the first embodiment mainly in that a break line 6 for dividing and forming the lid portion 4 is formed in a truncated spade mark shape, and the second embodiment is formed in a substantially octagonal shape. .
That is, as shown in FIG. 5, the break line 16 is drawn in an octagon across the front panel 9 and the top panel 3, and one side 16a of the break line 16 is aligned with the broken line a as the hinge axis h. Is set. And both sides 16b continuous with both ends of this one side are constricted parts 16b for narrowing the lid part width.
[0046]
In the first embodiment, the first engaging portions 4c of the lid 4 are formed in a concave shape, while the second engaging portions 3c of the side edges 3b of the upper panel are formed in a convex shape. In the embodiment, conversely, the first engaging portion 14c of the lid portion 14 is made convex, while the second engaging portion 13c of both side edge portions 13b is made concave. And according to this structure, since there is no convex part in the outlet at the time of opening the lid part 14, it becomes easy to take out kitchen paper in a box.
[0047]
Here, a description will be given of the setting conditions of the lid portion 4 of the sanitary thin paper storage box according to the present invention, which can be securely raised from the beginning after opening and can be raised in a position that is easy to close. . Specifically, the setting condition is that the lid weight per unit length of the hinge axis h is in the range of 1.0 to 1.5 g / cm. I learned through examination.
[0048]
In this study, various conditions to be set concerning the sanitary thin paper storage box according to the present invention, that is, the storage box 1 of a type in which a part of the upper panel 3 is opened and closed as the lid 4 with the broken line a as the hinge axis h are examined. Was. As a result, the paper to be used is often thick paper, and its basis weight is usually 300 to 450 g / m. ² , Preferably 330 to 430 g / m ² On the other hand, the center-of-gravity distance L from the hinge axis h to the lid 4 shown in FIG. 3 was in the range of 3 to 7 cm. In addition, as a result of a questionnaire in which 100 people use this storage box 1 while imposing confidentiality, the upright angle θ of the lid 4 in the upright state is as follows when the closed state of the lid 4 is 0 °. It was also found that it was easy to close when the angle was in the range of 120 to 160 °.
[0049]
Therefore, regarding the storage box 1 made of cardboard having the basis weight range and having the lid portion 4 having the center-of-gravity distance range, a unit of the hinge axis which can be set to the rising angle θ of 120 to 160 ° from the beginning after opening. The ratio (g / cm) of the lid weight to the length was examined.
[0050]
First, the examination procedure will be described.
[0051]
{Circle around (1)} A simulating member 21 simulating the rear panel and the lid as shown in FIG. 6 is formed by bending a rectangular cardboard at a right angle with a ruled line. Note that a plurality of types of the simulation members 21 are prepared according to the experimental level described later. The ruled line is formed by embossing a stainless steel blade having a thickness of 1.6 mm and a depth of 0.3 mm. If the ruled lines are too strong, the fibers of the paper will be cut off, and the rigidity of the hinge shaft cannot be maintained until the final use when used repeatedly. On the other hand, if the ruled line is too weak, it will not be possible to neatly bend at the ruled line. The ruled lines provide an appropriate degree of bendability and can provide a stable bend restoring moment even when opening and closing about 150 times (50 to 150 sets per sheet).
[0052]
(2) Simulating the state before opening, the rear panel simulating section 25 is supported vertically, and the lid simulating section 24 connected to the rear panel simulating section 25 via the hinge shaft h as shown by a solid line in the figure. Make it horizontal.
[0053]
{Circle around (3)} Assuming that the upright angle θ of the lid simulation section 24 in this state is 0 °, assuming the opening operation, the lid simulation section 24 is moved around the hinge axis h as shown by a two-dot chain line in the figure. Then, the standing angle θ is set to 0 ° again assuming a state in which the lid is closed.
[0054]
(4) Next, assuming an operation of opening the lid after opening, the lid simulation unit 24 is tilted backward to 150 °, and then the lid simulation unit 24 is moved as indicated by the dashed line in the figure. When the hand is released from the stabilization, the standing angle θ at that time is recorded.
[0055]
The experimental level was set as follows. Regarding the basis weight that affects the rigidity of the hinge axis h, 330 g / m ² And 430 g / m ² , And cardboard of each basis weight was prepared. Further, the distance L of the center of gravity of the lid simulation section 24 from the hinge axis h was set to two levels of 3 and 7 cm, and the two-level simulation member 21 was formed from each cardboard. Then, for each of the simulation members 21, the ratio of the lid weight W to the hinge axis length was varied from 0.8 to 2.0 g / cm, and the relationship between this ratio and the upright angle θ was examined. The ratio was changed by making cuts at both ends of the hinge axis h to change the effective length of the hinge axis h.
[0056]
FIG. 7 is a diagram showing the relationship between the ratio of the weight of the lid simulating portion (hereinafter referred to as the lid portion) to the hinge axis unit length and the standing angle θ as an experimental result. In addition, FIG. ² FIG. 7B shows the result of 430 g / m ² Are shown.
From FIG. 7, the overall tendency is that the rising angle θ increases as the ratio of the lid weight to the hinge axis unit length increases from 0.8 to 2.0, that is, the lid tilts backward. You can see that I'm sleeping. This is because as the ratio increases, the tilting moment Mw due to the lid weight W increases relatively to the restoring moment Mh due to the rigidity of the hinge shaft. When the distance L of the center of gravity increases from 3 to 7 cm, the tilting moment Mw increases, so that the standing angle θ of the lid portion is further increased, that is, the lid portion is further laid back. Further, from the comparison between FIG. 7A and FIG. 7B, the basis weight is 330 g / m 2. ² Than 430g / m ² Shows that the standing angle θ is larger, that is, the lid is in a lying state. It is considered that this is because the increase in the tilt moment Mw due to the increase in the lid weight W is larger than the increase in the rigidity of the broken line as the hinge axis h due to the increase in the grammage.
[0057]
When the ratio at which the angle of upright θ is in the range of 120 to 160 ° is read from these figures, the basis weight is 330 g / m 2. ² With respect to the ratio, the ratio in which the upright angle θ always falls within the range of 120 to 160 ° over the distance of 3 to 7 cm is 0.95 to 1.63 g / cm. On the other hand, the grammage is 430 g / m ² With respect to the above, the ratio in which the standing angle θ always falls within the range of 120 to 160 ° over the range of the center of gravity of 3 to 7 cm is in the range of 0.96 to 1.55 g / cm.
[0058]
Therefore, the basis weight is 330 to 430 g / m. ² For a storage box having a center of gravity distance of 3 to 7 cm, setting the lid upright angle θ to 120 is always set to 0.96 to 1.55 g / cm, which is the intersection of the two optimal ratio ranges. It has been found that the angle can be within the range of up to 160 °. Further, the basis weight is 300 g / m. ² And 450 g / m ² The same experiment was performed for the above, and the ratio of the lid weight to the unit length of the hinge shaft was found to be 1.0 to 1.5 g / cm.
[0059]
If the range of the optimal ratio is known, the necessary hinge axis length can be easily calculated from the desired lid weight when setting the break line of the lid. If the constriction amount is set so as to be the hinge axis length, the upright angle θ of the lid can be easily set to the optimum value.
[0060]
The embodiment according to the present invention has been described above. However, the present invention is not limited to the embodiment, and the following modifications are possible without departing from the gist of the present invention.
In the present embodiment, a truncated spade mark and an octagon have been exemplified as the shapes of the breaking lines 6 and 16 of the lids 4 and 14. However, if the width of the lid is converged from the vicinity of the hinge axis h to the hinge axis h, this shape is used. It is not limited to.
[0061]
In the present embodiment, kitchen paper is illustrated as the sanitary thin paper to be stored. However, the present invention is not limited to this, and tissue paper may be stored. Further, although the rectangular sheet, that is, the sheet-like material is illustrated as the kitchen paper, the invention is not limited to this, and a roll of kitchen paper wound in a roll shape may be stored.
[0062]
In the present embodiment, cardboard is exemplified as the material of the storage box 1, but cardboard (cardboard) may be used in some cases. Furthermore, composite paper obtained by laminating a synthetic resin film can also be used.
[0063]
【The invention's effect】
As described above, according to the present invention, the stored kitchen paper is easily taken out, and it is easy to set the opened lid portion to be in an upright state from the beginning after opening, and furthermore, it is possible to surely stand up A sanitary thin paper storage box that can be set in a state can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a sanitary thin paper storage box according to a first embodiment of the present invention, showing a state in which a lid is opened.
FIG. 2 is a perspective view of the sanitary thin paper storage box of the first embodiment before opening.
FIG. 3 is a side view of the sanitary thin paper storage box of the first embodiment, showing a state in which a lid is opened.
FIG. 4 is an exploded view of a blank for a sanitary thin paper storage box according to the first embodiment.
FIG. 5 is a development view of a blank for a sanitary thin paper storage box according to a second embodiment of the present invention.
FIG. 6 is a side view showing a simulation member simulating a rear panel and a lid.
FIG. 7 is a diagram showing the relationship between the ratio of the lid portion weight to the hinge shaft unit length and the standing angle θ, and FIG. 7A shows a basis weight of 330 g / m. ² FIG. 7B shows the result of 430 g / m ² Are shown.
FIG. 8 is a side view of a conventional sanitary thin paper storage box, showing a state where its lid is opened.
[Explanation of symbols]
1 Sanitary thin paper storage box
3 Top panel
4 Lid
5 Rear panel
6 Break line
6b Constriction
S beginning
E terminal
a-d line
h hinge axis

Claims (6)

While the upper panel is connected to the rear panel via a fold line, a part of the upper panel divided along a break line is folded backward with the fold line as a hinge axis to form an open lid. Characterized hygienic thin paper storage box. In order to reduce the restoring moment in the closing direction due to the hinge axis and maintain the lid in the open state in the upright state, the lid is narrowed in the width direction with the hinge axis as a start end and the hinge axis as an end. 2. The sanitary tissue storage box according to claim 1, wherein the width of the lid at the end is set to be narrower than that at the start. 3. The sanitary thin paper storage box according to claim 1, wherein the lid is formed so as to extend to a front panel connected to the upper panel via a broken line. 4. The break line in the top panel is set so as to form a concave or convex first engagement portion in a portion of the side edge of the lid near the front panel, and remains after the lid is formed by breaking. On both side edges of the upper panel, convex or concave second engaging portions are formed correspondingly as fracture marks of the first engaging portion,
The sanitary tissue storage box according to any one of claims 1 to 3, wherein the first engagement portion and the second engagement portion engage with each other when the lid is closed. The sanitary thin paper storage box according to any one of claims 1 to 4, wherein a cut line for forming a finger-holding concave portion is set at a tip of the lid portion. The sanitary thin paper box is made of cardboard having a basis weight of 300 to 450 g / m ² , the distance of the center of gravity of the lid from the hinge axis is 3 to 7 cm, and the weight of the lid relative to the unit length of the hinge axis. The sanitary thin paper storage box according to any one of claims 1 to 5, wherein the thickness is 1.0 to 1.5 g / cm.

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