JP2017178356A - Pop-up type paper storage body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pop-up type paper storage body that, when a remaining quantity of paper accommodated in a flexible package is reduced, maintains an effect of properly exposing a succeeding sheet of paper from the package without forming a large space inside the package.SOLUTION: Provided is a pop-up type storage body 1 including: paper 3 consisting of a stack of sheets; and a rectangular parallelepiped main body 2 made of a flexible material for accommodating the paper 3. The main body 2 includes: a section to be cleaved 23 provided at a top surface part 21 and from which the paper 3 can be taken out; and urging parts 4, 4a formed so as to extend from a bottom surface part 22 to both side surface parts 26 along an extension direction of the section to be cleaved 23. The urging parts 4, 4a have higher bending resistance than parts other than the urging parts 4, 4a among parts constituting the main body 2, and are projectingly deflected to the outer side of the main body 2 in a state that the paper 3 is accommodated in the main body 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pop-up paper container.

2. Description of the Related Art Conventionally, paper accommodation forms are roughly classified into a roll type and a pop-up type.
Among these, as shown in FIG. 5, for example, the household thin paper 3a is accommodated in a bag body 2b formed of a flexible film, and then the sealing portion 24a, which is an opening, is heat-sealed. A pop-up paper container 1a in which a thin paper 3a is sealed in a bag body 2b is known (for example, see Patent Document 1).
When the bag body 2b is placed, a perforation that can be easily cleaved is provided along the long side direction on the upper surface 2b1, and a slit can be formed by cleaving the perforation at the time of use. It has become. And it is possible to take out the household thin paper 3a accommodated in the bag main body 2b from this slit.
Further, the household thin paper 3a is folded in a so-called interfolded form and accommodated in the bag body 2b, and when the single household thin paper 3a is taken out from the slit, the second household thin paper 3a is folded. Due to the frictional interference, the paper is pulled out partway through the slit together with the household thin paper 3a to be pulled out. The second household thin paper 3a loses the friction resistance that can withstand the tensile stress that the folded state is canceled or pulled out when most of the previous household thin paper 3a is pulled out from the slit. It is separated from the use thin paper 3a and remains in the bag body 2b in a state of being partially exposed to the outside through the slit.

JP 2008-183034 A

However, the pop-up paper container 1a has a space formed between the slit and the household thin paper 3a when the housed thin paper 3a is drawn out, and the remaining amount decreases. Will be expanded.
That is, when the previous household thin paper 3a is pulled out from the slit, a space is formed around the next household thin paper 3a (corresponding to the space A in the prior art shown in FIG. 5). . For this reason, spatial freedom is given to the previous household thin paper 3a and the next household thin paper 3a, and it becomes easy to lose the friction resistance which can endure a folding state and can endure tensile stress by this free space.
In particular, when the remaining amount becomes small, a large space is formed inside the bag main body 2b, and the second household thin paper 3a due to the interfold falls into the bag main body 2b without being exposed from the slit. There is a problem that it ends up.

  An object of the present invention is to provide a pop-up paper container in which the next paper can be suitably exposed from the package when the remaining amount of the paper stored in the flexible package decreases. is there.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a pop-up paper container comprising: a paper in which a plurality of sheets are stacked; and a main body portion made of a rectangular parallelepiped flexible material that houses the paper. The body portion is a cleaved portion provided on the top surface portion from which the paper can be taken out, and an attachment formed by extending from the bottom surface portion to both side surface portions along the extending direction of the cleaved portion. A biasing portion, wherein the biasing portion has higher bending resistance than portions other than the biasing portion among the portions constituting the main body portion, and the paper is accommodated in the main body portion. The main body is bent outwardly from the main body.

According to the first aspect of the present invention, the urging portion has a higher bending resistance than the portion other than the urging portion among the portions constituting the main body portion, and in the state where the paper is accommodated in the main body portion, Since the urging part is bent in a convex manner outward of the part, the urging part is released when the paper is reduced and the space is generated in the main body part due to the decrease in the remaining amount of paper. Can be restored to deform the main body, and the space can be eliminated.
That is, when the previous paper is pulled out from the cleavage target, no space is formed around the second paper, and no spatial freedom is given to the first paper and the second paper. There is no fear that the frictional resistance that can withstand the cancellation of the folded state between the papers and the tensile stress is lost.
For this reason, even when the remaining amount becomes small, a space is not formed inside the main body, and the second-number paper can be stably exposed from the torn portion by the interfold. The effect of taking out the paper can be maintained.

  According to a second aspect of the present invention, in the pop-up paper container according to the first aspect, the urging portion is constituted by a urging member attached to the bottom surface portion and the side surface portion.

  According to the invention described in claim 2, it is needless to say that the same effect as that of the invention described in claim 1 can be obtained, and in particular, the urging portion is an urging member attached to the bottom surface portion and the side surface portion. Therefore, the size and material of the urging member can be selected relatively freely, and when a space is generated due to a decrease in the remaining amount of paper, the urging member is restored to deform the main body, The effect of extinguishing can be realized more reliably.

  According to a third aspect of the present invention, in the pop-up paper container according to the second aspect, the urging member is a plate-like member.

  According to the invention described in claim 3, it is of course possible to have the same effect as that of the invention described in claim 2. In particular, when the paper is pulled out and the remaining amount is reduced, the urging member is restored. Since the bending is eliminated and flattened, the main body is also flattened accordingly, and the space in the main body can be closed.

  According to a fourth aspect of the present invention, in the pop-up paper container according to the first aspect, the urging portion is constituted by a part of the bottom surface portion and the side surface portion of the main body portion. .

  According to the invention described in claim 4, it is of course possible to obtain the same effect as that of the invention described in claim 1, and in particular, the urging portion is constituted by a part of the bottom surface portion and side surface portion of the main body portion. Therefore, compared with the case where another member is attached to the main body, the number of members is reduced, and the pop-up paper container can be simplified.

  According to a fifth aspect of the present invention, in the pop-up paper container according to any one of the first to fourth aspects, the urging portion is formed to have a length that is substantially half the outer peripheral dimension of the main body. It is characterized by.

According to the invention described in claim 5, it is needless to say that the same effect as that of the invention described in any one of claims 1 to 4 can be obtained. Because it is half the length dimension, in the state where the urging part has restored and lost the urging force, approximately half of the main body part is one side, the other half is the other side, and one side and the other side are It will be in the state of contact.
For this reason, a space is not formed by the urging of the urging unit up to the last sheet of paper, and a good take-out effect can be maintained up to the last sheet.

  According to a sixth aspect of the present invention, in the pop-up paper container according to any one of the first to fifth aspects, the urging portion has a central portion convex toward the upper surface in accordance with a decrease in the paper. It is curved.

According to the invention described in claim 6, it is of course possible to obtain the same effect as that of the invention described in any one of claims 1 to 5, especially as the remaining amount of paper decreases. Since the biasing part is convexly curved upward, the biasing part protrudes toward the main body part side and curves, and the biasing part itself reduces the substantial outer dimension of the main body part while the biasing part itself is in the space of the main body part. Curve inward to crush.
For this reason, the space is not formed in the main body portion, and at the same time, the paper is pushed up to the to-be-cleaved portion, so that the taking-out effect can be maintained better.

  According to a seventh aspect of the present invention, in the pop-up paper container according to any one of the first to sixth aspects, the urging portion is a portion other than the urging portion among the portions constituting the main body portion. The mass is larger than the portion.

  According to the seventh aspect of the invention, it is of course possible to obtain the same effect as that of any one of the first to sixth aspects of the invention. In particular, the mass of the urging portion is the remaining amount of paper. When it becomes small, the mass of the pop-up paper container becomes smaller than the resistance at the time of taking out the paper, and there is no fear that the main body part is lifted up.

  According to the present invention, when the remaining amount of paper accommodated in the flexible packaging body decreases, the next count paper can be suitably exposed from the packaging body.

It is a perspective view which shows the state (a) at the time of non-use of the pop-up type paper container in 1st Embodiment which concerns on this invention, and the state at the time of use (state in which paper remaining amount decreased). (A) The state of the pop-up type paper container in the first embodiment according to the present invention (a) when not in use, (b) a cross-sectional view showing the state of use (state where the remaining amount of paper is reduced) and (c) urging It is a perspective view which shows a member. It is a perspective view of the pop-up paper container which shows the attachment state of the main-body part and urging | biasing member in 2nd Embodiment which concerns on this invention. (A) The state when not in use of the pop-up type paper container in the modification according to the present invention, (b) A cross-sectional view showing a state in use (a state where the remaining amount of paper is reduced) and (c) an urging member It is a perspective view shown. It is sectional drawing which shows the pop-up type paper container of a prior art.

  Hereinafter, the pop-up paper container 1 according to the first embodiment and the second embodiment of the present invention will be described in detail with reference to the drawings, and then a modification will be described. However, the scope of the invention is not limited to the illustrated examples.

[First Embodiment]
A pop-up paper container 1 according to a first embodiment of the present invention will be described with reference to FIGS.

[Configuration of pop-up paper container]
As shown in FIGS. 1 and 2, the pop-up paper container 1 includes a main body portion 2, a paper 3, and a biasing member 4 as a biasing portion.
The main body 2 is a bag made of a flexible material that accommodates the paper 3, and has a rectangular parallelepiped shape when the paper 3 is fully loaded. Specifically, the dimensions of the main body 2 when not in use are, for example, 150 to 300 mm in the longitudinal direction, 90 to 150 mm in the lateral direction, and 40 to 150 mm in height. However, the dimension of the main body 2 is not limited to this range, and may be a cube. That is, a rectangular parallelepiped shape includes a cubic shape.
As the flexible material used for the main body 2, it is preferable to use a resin material having a relatively low bending resistance such as polyethylene, polypropylene, and polyvinyl chloride.
The main body portion 2 includes a top surface portion 21, a bottom surface portion 22, a to-be-cleavable portion 23, a heat seal portion 24, a long side surface portion 25, and a short side surface portion 26.
The top surface portion 21 is a surface located on the upper surface of the main body portion 2 when the pop-up paper container 1 is placed on a desk (not shown).
The bottom surface portion 22 is a surface that becomes the back surface of the top surface portion 21 and is provided with a biasing member 4 to be described later.
The to-be-cleaved portion 23 is a so-called perforation in which a crack that can be easily cleaved provided in the longitudinal direction in the approximate center of the top surface portion 21 is formed intermittently and linearly. When the use of the pop-up paper container 1 is started, the cleavage portion 23 is cleaved to form an opening in the main body portion 2, and the paper 3 accommodated in the main body portion 2 is removed via the cleavage portion 23. It is designed to be used by pulling it out. In addition, it is desirable for the length dimension of the to-be-cleaved part 23 to be set in the range of 50 to 100% with respect to the longitudinal dimension of the main body part 2. The perforation may extend to the short side portion 26.
When the opening of the main body portion 2 is closed at the short side surface portion 26 of the main body portion 2, the heat seal portion 24 is joined by locally heating the gusset-folded tip and instantly melting and solidifying it. It is a junction.
The long side surface portion 25 is a side surface in the longitudinal direction.
The short side surface portion 26 is a side surface in the short direction and is a side surface having the heat seal portion 24.

The paper 3 is a planar rectangular sheet material, and the sheet material is folded in half, and a configuration in which a part of the other folded sheet material is sandwiched between the folded surfaces is continuously stacked. It is folded into a so-called interfold.
That is, when lifting the first (uppermost) paper 3, a part of the next-numbered paper 3 is sandwiched, so that the next-numbered paper is simultaneously lifted up to the middle.
Examples of the paper 3 include plant fiber materials such as kitchen paper, paper towel, and tissue paper.
For example, 50 to 350 sheets of paper 3 are folded and accommodated in the main body 2. In addition, the paper 3 may be a set of a plurality of paper sheets, such as two or three sheets, and may be folded and stored in the main body 2 for each group.

The urging member 4 is a flexible member having higher bending resistance than the flexible material used for the main body 2.
Specifically, polyester, polypropylene, and the like can be applied, and are thicker than the packaging bag film, and preferably have a thickness of about 3 to 10 times.
The urging member 4 is formed in a flat plate shape and extends from the bottom surface portion 22 of the main body portion 2 to both short side surface portions 26 and is attached.
More specifically, it is provided across the bottom surface portion 22 and both short side surface portions 26 along the longitudinal direction of the main body portion 2. Moreover, in both the short side surface parts 26, the urging member 4 is provided to a substantially middle height. In other words, both end portions of the urging member 4 are pasted to the vicinity of the heat seal portion 24, respectively.
The urging unit may be affixed to the main body 2 like the urging member 4 or may be a part of the main body 2 incorporated as a part of the main body 2. That is, the urging member 4 is a subordinate concept of the urging unit. Further, the end of the urging member 4 may not be near the heat seal portion 24, may be provided up to the heat seal portion 24, or may be up to the bottom.
Further, the biasing member 4 is bent at the boundary between the bottom surface portion 22 and the short side surface portion 26 when the paper 3 is accommodated in the main body portion 2. In other words, the urging member 4 in the pop-up paper container 1 when not in use is urged so that both short side portions 26 are widened outward in the longitudinal direction.

[Method for producing pop-up paper container]
In manufacturing the pop-up paper container 1, first, a sheet-like flexible material is rounded into a cylindrical shape, and the main body 2 is formed by joining the joint portions by heat sealing (this heat sealing portion is not shown).
Next, one opening part of the cylindrical main body part 2 was gusset-folded, and the tip thereof was similarly joined by heat sealing to form a heat sealing part 24, and the other opening part was interfolded and stacked. After the paper 3 is accommodated, the other opening is also gusseted, and the tip is joined by heat sealing to seal the paper 3 in the main body 2.
After that, a perforated portion 23 is formed by forming a perforation in the top surface portion 21 of the main body portion 2, and the urging member 4 is pasted across the bottom surface portion 22 and both short side surface portions 26 to form a rectangular parallelepiped pop-up paper. A container 1 is formed.

[Operation of pop-up paper container]
The operation of the pop-up paper container 1 will be described below.
The pop-up paper container 1 when not in use is in a state in which the height of the main body 2 is the largest, and as the remaining amount decreases as the paper 3 is pulled out from the main body 2 through the to-be-cleaved portion 23. The stacking height of the paper 3 is lowered. Along with this, there will be a spatial margin in the main body 2. However, since the biasing member 4 is biased so as to spread both short side portions 26 outward in the longitudinal direction, there is a spatial margin. Both side surfaces are expanded outward by the amount of occurrence, and no extra space (a space between the uppermost portion of the stacked paper 3 and the top surface portion 21 of the main body 2) is generated in the main body 2.
In this way, even when the remaining amount of the stored paper 3 is small, both the short side surface portions 26 are greatly expanded outward, so that no extra space is formed, and the paper 3 is interfolded. The effect that the next-numbered paper 3 is satisfactorily exposed from the cleaved portion 23 is maintained.

[Effect of pop-up paper container]

According to the first embodiment, in the main body 2, the biasing member 4 higher than the bending resistance of the main body 2 is urged from the opposed bottom surface 22 of the to-be-cleaved portion 23 to both short side surfaces 26. Since the biasing member 4 is restored in accordance with the decrease in the paper 3, when the space is generated due to the decrease in the remaining amount of the paper 3, the biasing member 4 is restored to deform the main body 2, Can be extinguished.
That is, when the previous paper 3 is pulled out from the to-be-cleaved portion 23, no space is formed around the next paper 3, and the free space between the previous paper 3 and the next paper 3 is free. No frictional resistance that can withstand the cancellation of the folded state of the papers 3 and the tensile stress is lost.
For this reason, even when the remaining amount becomes small, a space is not formed inside the main body 2, and the next-numbered paper 3 can be stably exposed from the cleaved portion 23 by the interfold. The effect of taking out the paper 3 from the part 2 can be maintained.

  Further, according to the first embodiment, since the urging member 4 is a flat plate-like member, when the paper 3 is pulled out and the remaining amount is reduced, the urging member 4 is restored and the bending is eliminated and the flattening is performed. Therefore, the main body 2 is also flattened accordingly, and the space in the main body 2 can be closed.

Further, according to the first embodiment, since the urging member 4 is approximately half the length of the outer peripheral dimension of the main body portion 2, the main body portion is restored in a state where the urging member 4 is restored and loses the urging force. 2 is one surface (the top surface 21 and the upper half of the short side surface 26 on both sides), and the other approximately half is the other surface (the bottom surface 22 and the lower half of the short side surface 26 on both sides). Thus, the one surface and the other surface come into contact with each other.
For this reason, a space is not formed by the urging of the urging member 4 up to the last sheet of paper 3, and a good take-out effect can be maintained up to the last sheet.

  Moreover, according to 1st Embodiment, since the mass of the urging | biasing member 4 is larger than the main-body part 2, when the residual amount of the paper 3 becomes small, it is pop-up type paper rather than the resistance at the time of taking out the paper 3. There is no fear that the mass of the container 1 is reduced and the main body 2 is lifted together.

[Second Embodiment]
Next, 2nd Embodiment of the pop-up type paper container 1 of this invention is described based on FIG.
In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[Configuration of pop-up paper container]
As shown in FIG. 3, the main body 2 is formed of two members whose upper and lower halves are different in bending resistance. Specifically, the upper half is formed from the low-bending soft material 2a that is the flexible material of the main body 2 of the first embodiment, and the lower half is the same flexibility as the biasing member 4 of the first embodiment. It is made of a high-rigidity soft material 4a as an urging portion that is a material having a higher stiffness than the low-rigidity softness material 2a. Moreover, the highly rigid soft material 4a is in a state of being bent outwardly.
That is, the high stiffness soft material 4 a is a member constituting part of the bottom surface portion 22 and both short side surface portions 26 of the main body portion 2. In other words, the high stiffness soft material 4a constitutes the main body portion 2 and also constitutes the urging portion.
Note that the high-rigidity soft material 4 a is a subordinate concept of the urging portion, like the urging member 4.

[Method for producing pop-up paper container]
As an example of a method for manufacturing the pop-up paper container 1 according to the second embodiment, a stacked body of papers 3 is placed in the approximate center of a rectangular planar high-rigidity soft material 4a, and a planar rectangular shape is formed from above. A low-softness material 2a having a shape is placed, and thereafter, the four-side edges of the low-rigidity softness material 2a and the high-rigidity softness material 4a are overlapped and heat-sealed to accommodate the laminated body of papers 3. Is mentioned. At this time, the high-rigidity soft material 4a is bent to the outside of the main body 2 so as to be heat-sealed.
Further, the three sides of the periphery of the low and soft materials 2a and 4a are heat-sealed to form openings, and after the stacked body of paper 3 is received from the openings, the openings are heat-sealed. The method may be used.

[Operation of pop-up paper container]
In the pop-up paper container 1 according to the second embodiment, the height dimension of the main body 2 is the largest when not in use, and the paper 3 is pulled out from the main body 2 through the to-be-cleaved portion 23 and the remaining amount. As the value decreases, the stacking height of the paper 3 decreases. Along with this, there will be a spatial margin in the main body 2, but since the high-rigidity soft material 4 a is bent to the outside of the main body 2, the main body 2 is rectangular in plan view. As the four sides spread outward, the flexure is eliminated, and at the same time, the low-stiffness softness material 2a is also expanded outward, and the main body 2 is outwardly moved by the amount of space. In the main body 2, no extra space (a space between the uppermost portion of the stacked paper 3 and the low bending resistance material 2 a) is generated.
In this way, even when the remaining amount of the stored paper 3 is small, the four sides of the main body 2 spread outward, so that no extra space is formed. The effect that the count paper 3 is exposed well from the to-be-cleaved portion 23 is maintained.

[Effect of pop-up paper container]
According to 2nd Embodiment which concerns on this invention, there can exist an effect similar to 1st Embodiment.
Furthermore, the following operational effects can be achieved.
In the second embodiment, the main body 2 has a lower half formed of a high-rigidity soft material 4a, and the high-rigidity soft material 4a is bent so as to protrude outward from the main body 2. In the scale material 4a, the four sides in the plan view of the main body 2 are expanded outward (four directions) due to the reduction of the paper 3, so that the bending is eliminated, so that the low stiffness soft material 2a is removed from more directions. The space between the low bending resistance material 2a and the paper 3 can be prevented from being generated more stably.
For this reason, even when the remaining amount becomes small, a space is not formed inside the main body 2, and the next-numbered paper 3 can be stably exposed from the cleaved portion 23 by the interfold. The effect of taking out the paper 3 from the part 2 can be maintained satisfactorily.

[Modification]
Next, a modification of the pop-up paper container 1 of the present invention will be described with reference to FIG.
In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[Configuration of Modification]
As shown in FIG. 4C, the biasing member 4b in the modification is not a flat plate but a curved member curved to a predetermined radius.
Further, as shown in FIG. 4A, the urging member 4b is affixed across the bottom surface portion 22 and the side surface of the main body portion 2, but in both short side surface portions 26, the heat seal portion 24 It is not provided to the height position, and the end portion is located below the heat seal portion 24.
Further, the urging member 4 b has a convex surface attached to the bottom surface portion 22.

[Operation of modification]
4 (a) and 4 (b), the pop-up paper container 1 when not in use is in a state in which the height of the main body 2 is the largest, and the main body 2 As the paper 3 is pulled out from the part 2 and the remaining amount is reduced, the stacking height of the paper 3 is lowered. Along with this, there will be a spatial margin in the main body 2. However, since the biasing member 4b is biased to pull both short side portions 26 downward in the longitudinal direction, there is a spatial margin. Both side surfaces are pulled outward and downward by the amount of occurrence, and no extra space (a space between the uppermost portion of the stacked paper 3 and the top surface portion 21 of the main body 2) is generated in the main body 2.
Further, the urging member 4b in FIG. 4C is curved to a predetermined radius, and its convex surface is affixed to the bottom surface portion 22, so that the remaining amount is reduced and the urging member 4b is restored. Along with this, the central portion protrudes convexly and pushes up the bottom surface portion 22 to the inside of the main body portion 2, whereby the stacked paper 3 remaining in the main body portion 2 is pushed up to the top surface portion 21. .
Thus, even in a state where the remaining amount of the stored paper 3 is small, both the short side surface portions 26 are pulled outward and downward, the bottom surface portion 22 is pushed up, and the paper 3 is moved to the top surface portion 21. By being pushed up, an extra space is not formed, and the effect that the next-numbered paper 3 is satisfactorily exposed from the cleaved portion 23 by the interfolding of the paper 3 is maintained.

[Effect of modification]
According to the modification according to the present invention, the same effects as those of the first embodiment and the second embodiment can be obtained.
Furthermore, the following operational effects can be achieved.
According to the modified example, as the remaining amount of the paper 3 decreases, the urging member 4b is curved so as to push up the bottom surface portion 22 of the main body portion 2 by restoration, so that the substantial outer peripheral size of the main body portion 2 is reduced. The urging member 4b itself bends inward so as to crush the space of the main body portion 2 while being pushed.
For this reason, the paper 3 is pushed up to the to-be-cleaved portion 23 at the same time as no space is formed in the main body portion 2, and the taking-out effect can be maintained better.

In addition, this invention is not limited to the said 1st Embodiment, 2nd Embodiment, and a modification, Of course, it can change suitably about a specific structure.
Specifically, the urging member 4 may be not only a flat plate member but also a rod-like or strip-like member, and any configuration may be used as long as the space in the main body 2 can be eliminated by the urging force.
Moreover, although the highly rigid soft material 4a shall comprise the lower half of a main-body part, it is good also as what comprises the lower half of the bottom face part 22 and the both short side parts 26. FIG.

[Example 1]
In Example 1, the pop-up paper container 1 in which the urging member 4 was attached to the bottom surface portion 22 of the main body 2 was used (type A corresponding to the first embodiment).
The main body 2 uses a polyethylene (PE) sheet having a thickness of 30 μm as a flexible material. The dimensions of the main body 2 when not in use are a longitudinal dimension of 300 mm, a short dimension of 140 mm, and a height dimension of 80 mm.
The bending resistance of the polyethylene sheet is 2.3 cm as measured by the cantilever method (inclined surface 45 °).
As for the paper 3, 200 sheets laminated (“Erière Paper Towel Double 200 sets 400 sheets (medium format)” manufactured by Daio Paper Co., Ltd.) were accommodated in the main body 2.
The urging member 4 uses a polyester plate having a thickness of 90 μm as a material, and the dimensions are a longitudinal dimension of 400 mm and a short dimension of 140 mm. Here, since the longitudinal dimension of the bottom face portion 22 is 300 mm, the biasing member 4 is attached to both the short side face portions 26 by extending from the bottom face portion 22 by 50 mm.
The bending resistance of the polyester plate is 7.5 cm as measured by a cantilever method (inclined surface 45 °).

[Example 2]
In Example 2, the pop-up paper container 1 in which the urging member 4 was attached to the bottom surface portion 22 of the main body 2 was used (type A corresponding to the first embodiment).
The main body 2 and the paper 3 were the same as those in Example 1.
The biasing member 4 uses a polyester plate having a thickness of 200 μm as a material, and the dimensions are the same as those in the first embodiment.
Further, the bending resistance of the polyester plate is 15 cm as measured by a cantilever method (inclined surface 45 °).

Example 3
In Example 3, the pop-up paper container 1 in which the bottom surface portion 22 of the main body portion 2 was cut out and the high-rigidity soft material 4a was attached was used (type B corresponding to the second embodiment).
The low bending resistance material 2a uses a polyethylene (PE) sheet having a thickness of 30 μm as a flexible material. The dimensions of the main body 2 when not in use are a longitudinal dimension of 300 mm, a short dimension of 140 mm, and a height dimension of 80 mm.
The bending resistance of the polyethylene sheet is 2.3 cm as measured by the cantilever method (inclined surface 45 °).
The same paper 3 as in Example 1 was accommodated in the main body 2.
The high-rigidity soft material 4a uses a polyester plate having a thickness of 90 μm as a material, and the dimensions are a longitudinal dimension of 400 mm and a short dimension of 140 mm. Here, since the longitudinal dimension of the bottom surface portion 22 is 300 mm, the high-rigidity soft material 4 a is attached to both the short side surface portions 26 by extending 50 mm from the bottom surface portion 22.
The bending resistance of the polyester plate is 7.5 cm as measured by a cantilever method (inclined surface 45 °).

Example 4
In Example 4, the pop-up paper container 1 in which the bottom surface portion 22 of the main body portion 2 was cut out and the high-rigidity soft material 4a was attached was used (type B corresponding to the second embodiment).
The main body 2 and the paper 3 were the same as those in Example 1.
The high-rigidity soft material 4a uses a polypropylene (PP) plate having a thickness of 200 μm as the material, and the dimensions are the same as those in the first embodiment.
The bending resistance of the polypropylene plate is 15 cm as measured by the cantilever method (inclined surface 45 °).

[Comparative Example 1]
In Comparative Example 1, a pop-up paper container 1 in which the urging member 4 is not attached to the bottom surface portion 22 of the main body 2 is used (a type of prior art that does not correspond to either the first embodiment or the second embodiment) C).
The main body 2 and the paper 3 are the same as those in the first embodiment.

[Comparative Example 2]
In Comparative Example 2, the pop-up paper container 1 that does not attach the urging member 4 to the bottom surface portion 22 of the main body 2 is used (a type of conventional technology that does not correspond to either the first embodiment or the second embodiment) C).
The main body 2 uses a polyethylene (PE) sheet having a thickness of 50 μm as a flexible material, and the dimensions when not used are the same as those in the first embodiment.
The bending resistance of the polyethylene sheet is 3.4 cm as measured by the cantilever method (inclined surface 45 °).

With respect to the pop-up type paper containers 1 of Examples 1-4 and Comparative Examples 1 and 2 described above, the paper 3 is pulled out from the cleaved portion 23 one by one from the stage where the remaining number of the accommodated papers 3 is 30. At that time, whether the next count paper 3 was exposed from the to-be-cleaved portion 23 or dropped into the main body 2 was repeated three times in each case.
Further, it was confirmed whether the pop-up paper container 1 itself would be lifted when the 30th remaining paper 3 was pulled out.
In addition, pulling out paper from the to-be-cleaved part 23 means gripping only the paper 3 exposed from the to-be-cleaved part 23 and pulling it upward.
The above results are shown in Tables 1 and 2.

From the results shown in Table 1, Examples 1 and 3 in which the thickness of the biasing member 4 or the high stiffness soft material 4a is 90 μm are Comparative Examples 1 and 2 (Comparative Example 2 is the main body part 2). It was confirmed that the number of depressions was small compared to Example 1-4 because it was different from Example 1-4. Specifically, as a result of calculating the average number of depressions from three implementations, Example 1 averaged 5 times, Example 3 averaged 2 times, Comparative Example 1 averaged 12 times, and Comparative Example 2 averaged 14 times Met.
Therefore, it was confirmed that Examples 1 and 3 had an advantageous effect over Comparative Examples 1 and 2.

Further, in Examples 2 and 4 in which the thickness of the biasing member 4 or the high-rigidity soft material 4a is 200 μm, the number of depressions is never once over the implementation of 3 times, and there is a significant difference compared with Comparative Example 1. It could be confirmed.
Therefore, it was confirmed that Examples 2 and 4 had a remarkable effect over Comparative Examples 1 and 2.
From the above, it is considered that the number of depressions can be reduced by providing a member with high bending resistance by suppressing the formation of the space in the main body 2.
Also, better results were obtained when the bending resistance was 15 cm than when the bending resistance was 7.5 cm. The higher the bending resistance, the greater the resilience of the bending, and therefore the suppression of the space formation was more. This is thought to be due to strict realization.
Further, comparing the comparative example 1 and the comparative example 2, when the bending resistance of the main body 2 is high, the drop occurs more frequently from the stage where the number of remaining sheets is larger than when the main body 2 is low. From this, it was confirmed that even if the bending resistance of the main body portion 2 is merely high, there is no effect in preventing the drop. In addition, it is considered that the shape retaining property of the main body 2 is improved due to the increase in the bending resistance of the main body 2, thereby causing a larger space between the paper and the top surface 21.

From the results of Table 2, the pop-up paper container 1 itself was not lifted in any of Examples 1 to 4.
On the other hand, in Comparative Examples 1 and 2, the pop-up paper container 1 itself lifted up when the paper 3 was pulled out, and the paper 3 could not be pulled out.
This is considered to be because the weight of the main body 2 is larger in the case where the biasing member 4 or the high stiffness soft material 4a having a large thickness is provided compared to the comparative example 1.
Moreover, in the comparative example 2, although the thing from which the thickness and the bending resistance of the main-body part 2 of Example 1 to 4 differed, the significant difference by this was not able to be confirmed.

DESCRIPTION OF SYMBOLS 1 Pop-up type paper container 1a Pop-up type paper container 2 Main body part 2a Low rigid soft material 2b Bag main body 2b1 Surface 3 Paper 3a Household thin paper 4 Energizing member 4a High rigid soft material (urging part)
4b Energizing member 21 Top surface portion 22 Bottom surface portion 23 Cleaved portion 24 Heat seal portion 25 Long side surface portion 26 Short side surface portion A Space

Claims (7)

A pop-up paper container comprising a paper in which a plurality of sheets are laminated, and a main body made of a rectangular parallelepiped flexible material that houses the paper,
The main body portion is a cleaved portion that can take out the paper provided on the top surface portion, and a biasing portion that is formed to extend from the bottom surface portion to both side surface portions along the extending direction of the cleaved portion, With
The urging portion has higher bending resistance than portions other than the urging portion among the portions constituting the main body portion, and in a state where the paper is accommodated in the main body portion, on the outside of the main body portion. A pop-up paper container characterized by being bent into a convex shape.   2. The pop-up paper container according to claim 1, wherein the urging portion is constituted by an urging member attached to a bottom surface portion and a side surface portion.   The pop-up paper container according to claim 2, wherein the biasing member is a plate-like member.   The pop-up paper container according to claim 1, wherein the urging portion is constituted by a part of the bottom surface portion and the side surface portion of the main body portion.   5. The pop-up paper container according to claim 1, wherein the urging portion is formed to have a length that is substantially half of an outer peripheral dimension of the main body.   The pop-up paper container according to any one of claims 1 to 5, wherein the urging portion has a central portion that is convexly curved toward the upper surface in accordance with a decrease in the paper.   The pop-up type paper storage according to any one of claims 1 to 6, wherein the urging portion has a mass larger than a portion other than the urging portion among portions constituting the main body portion. body.