JP6677555B2 - Pop-up paper container - Google Patents

Description

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

Conventionally, paper storage modes are roughly classified into a roll type and a pop-up type.
Among them, as shown in FIG. 5, for example, a 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. 2. Description of the Related Art 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, the perforations that can be easily cleaved are provided along the long side direction on the surface 2b1 serving as the upper surface. When the perforations are cleaved at the time of use, a slit can be formed. It has become. Then, the household thin paper 3a housed in the bag body 2b can be taken out from the slit.
Further, the household thin paper 3a is folded in a so-called interfold form and accommodated in the bag body 2b. When one household thin paper 3a is taken out from the slit, the next home thin paper 3a is folded. Due to frictional interference, it is pulled out of the slit partway along with the household thin paper 3a that is pulled out. Then, the next-generation household thin paper 3a loses a frictional resistance enough to withstand the tensile stress that the folded state is canceled or pulled out at the stage when most of the previous household thin paper 3a is pulled out from the slit, and the previous home thin paper 3a loses the frictional resistance. It is separated from the tissue thin paper 3a and remains in the bag body 2b in a state of being partially exposed to the outside from the slit.

Japanese Patent Application Laid-Open No. 2008-183034

However, in the above-mentioned pop-up paper container 1a, a space is formed between the slit and the household thin paper 3a when the stored household thin paper 3a is pulled out, and the space is formed as the remaining amount decreases. Will be extended.
That is, when the previous household thin paper 3a is pulled out from the slit, a space is formed around the next home 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 home thin paper 3a, and the free space tends to lose the frictional resistance enough to eliminate the folded state and withstand the tensile stress.
In particular, when the remaining amount becomes small, a large space is formed inside the bag body 2b, and the next-generation household thin paper 3a due to the interfold falls into the bag body 2b without being exposed from the slit. Problem.

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

In order to solve the above-mentioned problem, the invention according to claim 1, wherein a pop-up paper container including a plurality of laminated papers, and a main body made of a rectangular parallelepiped flexible material that stores the papers is provided. Wherein the main body portion is formed by a cleaved portion provided on a top surface portion from which the paper can be taken out and extending from a bottom portion to both side portions along an extending direction of the cleaved portion. And a biasing portion, wherein the biasing portion has a higher degree of softness than a portion other than the biasing portion among the portions constituting the main body portion, and in a state where the paper is accommodated in the main body portion. The biasing portion is bent in a convex shape toward the upper surface in accordance with the decrease of the paper .

According to the first aspect of the present invention, the urging portion has a higher rigidity than the portion other than the urging portion among the portions constituting the main body, and in a state where the paper is stored in the main body, Since the biasing portion is bent in a convex shape to the outside of the portion, the biasing portion cancels the bending according to the decrease in the paper, and when the space is generated in the main body due to the decrease in the remaining amount of the paper, the biasing portion is Can be restored to deform the main body and eliminate the space.
That is, when the previous paper is pulled out of the cleaved portion, no space is formed around the next paper and no space is given to the previous paper and the next paper. In addition, there is no fear that the folded state of the papers is canceled or the frictional resistance that can withstand the tensile stress is lost.
For this reason, even when the remaining amount becomes small, no space is formed inside the main body, and the next-number paper can be stably exposed from the cleaved portion by the interfold. The effect of taking out the paper can be maintained.
In addition, as the urging portion curves upwardly as the remaining amount of paper decreases, the urging portion protrudes toward the main body and bends, thereby reducing the substantial outer dimension of the main body. While contracting, the urging portion itself curves inward so as to crush the space of the main body portion.
For this reason, the space is not formed in the main body, and at the same time, the paper is pushed up to the cleaved portion, so that the take-out effect can be more favorably 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 an urging member attached to the bottom surface and the side surface.

  According to the second aspect of the invention, it is needless to say that the same effect as the first aspect of the invention can be obtained. In particular, the biasing portion is a biasing member attached to the bottom surface and the side surface. 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 and the main body is deformed, Can be more reliably achieved.

  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-shaped member.

  According to the third aspect of the invention, it is needless to say that the same effect as the second aspect of the invention is obtained. In particular, when the paper is pulled out and the remaining amount is reduced, the urging member is restored. Since the flexure 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 configured by a part of the bottom surface and the side surface of the main body. .

  According to the fourth aspect of the invention, it is needless to say that the same effect as the first aspect of the invention can be obtained. Therefore, the number of members can be reduced as compared with the case where a separate member is attached to the main body, and the pop-up paper container can have a simple configuration.

  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 substantially half the outer peripheral dimension of the main body. It is characterized by having.

According to the fifth aspect of the present invention, it is needless to say that the same effects as those of the first to fourth aspects of the invention can be obtained. Since the length is half, when the biasing portion is restored and the biasing force is lost, approximately half of the main body becomes one surface and the other approximately half becomes the other surface. It will be in the state of contact.
For this reason, no space is formed by the urging of the urging portion until the last sheet of paper, and a good take-out effect can be maintained for 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 is a portion of the main body portion other than the urging portion. It is characterized in that the mass is larger than the part.

According to the invention described in claim 6, it is needless to say that the same effect as the invention described in any one of claims 1 to 5 can be obtained. 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 danger that the main body is lifted.

  ADVANTAGE OF THE INVENTION According to this invention, when the remaining amount of the paper accommodated in the flexible package decreases, the next-numbered paper can be suitably exposed from the package.

It is a perspective view which shows (a) the state at the time of non-use, and (b) the state at the time of use (the state in which the paper remaining amount has decreased) of the pop-up type paper container in 1st Embodiment which concerns on this invention. Sectional view showing (a) a state when not used, (b) a state when used (a state where the amount of remaining paper is reduced), and (c) biasing of the pop-up type paper container according to the first embodiment of the present invention. It is a perspective view which shows a member. It is a perspective view of the pop-up type paper container which shows the attachment state of the main-body part and the urging | biasing member in 2nd Embodiment concerning this invention. FIG. 7C is a cross-sectional view showing (a) a state when not used, (b) a state when used (a state where the amount of remaining paper is reduced), and (c) a biasing member of the pop-up type paper container in a modification according to the present invention. FIG. It is sectional drawing which shows the pop-up type paper container of a prior art.

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

[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 2, paper 3, and an urging member 4 as an urging unit.
The main body 2 is a bag made of a flexible material for accommodating 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 used are, for example, 150 to 300 mm in the longitudinal direction, 90 to 150 mm in the short direction, and 40 to 150 mm in height. However, the dimensions of the main body 2 are not limited to this range, and may be cubic. That is, the cuboid shape includes a cubic shape.
As the flexible material used for the main body 2, it is preferable to use a resin material having relatively low rigidity such as polyethylene, polypropylene, and polyvinyl chloride.
The main body 2 includes a top surface 21, a bottom surface 22, a cleaved portion 23, a heat seal portion 24, a long side portion 25, and a short side portion 26.
The top surface 21 is a surface located on the upper surface of the main body 2 when the pop-up paper container 1 is placed on a desk (not shown).
The bottom surface portion 22 is a surface serving as the back surface of the top surface portion 21 and is provided with a biasing member 4 described later.
The cleaved portion 23 is a so-called perforation in which a crack, which is provided along the longitudinal direction at the approximate center of the top surface portion 21 and which can be easily cleaved, is formed intermittently and linearly. When the use of the pop-up type paper container 1 is started, the cleaved portion 23 is cleaved to form an opening in the main body 2, and the paper 3 accommodated in the main body 2 is cut through the cleaved portion 23. It is designed to be pulled out and used. The length of the cleaved portion 23 is preferably set in the range of 50 to 100% with respect to the length of the main body 2. The perforations may extend to the short side surfaces 26.
When closing the opening of the main body portion 2 at the short side surface portion 26 of the main body portion 2, the heat seal portion 24 is locally heated at the gusset-folded tip and instantaneously melted and solidified to be joined. It is a joint.
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 lateral direction, and is a side surface having the heat seal portion 24.

The paper 3 is a sheet material having a flat rectangular shape, and the sheet material is folded in two, and a configuration in which a part of another folded sheet material is sandwiched between overlapping surfaces is continuously stacked. , A so-called interfold.
That is, when the foremost (uppermost) paper 3 is lifted, a part of the next-numbered paper 3 is sandwiched, so that the next-numbered paper is simultaneously lifted halfway.
Examples of the paper 3 include vegetable fiber materials such as kitchen paper, paper towel, and tissue paper.
For example, 50 to 350 papers 3 are folded and stored in the main body 2. Further, the paper 3 may be formed by stacking a plurality of sheets such as two sheets or three sheets into one set, and may be folded and stored in the main body 2 for each set.

The urging member 4 is a flexible member having higher rigidity than the flexible material used for the main body 2.
Specifically, polyester, polypropylene, or the like can be applied, and it is preferable that the film is thicker than the packaging bag film and has a thickness of about 3 to 10 times.
The urging member 4 is formed in a flat plate shape, extends from the bottom surface 22 of the main body 2 to both short side surfaces 26, and is attached.
More specifically, it is provided over the bottom surface 22 and both short side surfaces 26 along the longitudinal direction of the main body 2. The urging members 4 are provided on both short side surface portions 26 to a height substantially at the middle. In other words, both ends of the urging member 4 are stuck to the vicinity of the heat seal portion 24, respectively.
The urging portion may be attached 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 lower concept of the urging unit. Further, the end of the biasing member 4 does not have to be near the heat seal portion 24, and may be provided above the heat seal portion 24 or may be provided below.
The biasing member 4 is bent at the boundary between the bottom surface portion 22 and the short side surface portion 26 by housing the paper 3 in the main body portion 2. That is, the urging member 4 of the pop-up paper container 1 when not in use is urged such that both short side surfaces 26 are extended outward in the longitudinal direction on both side surfaces.

[Production method of pop-up paper container]
In manufacturing the pop-up type paper container 1, first, a sheet-like flexible material is rolled into a cylindrical shape, and a main body 2 in which seams are joined by heat sealing is formed (this heat sealing portion is not shown).
Next, one opening of the cylindrical main body 2 was gusset-folded, and its tip was similarly joined by heat sealing to form a heat-sealed portion 24, which was interfolded from the other opening and stacked. After accommodating the paper 3, the other opening is also gusset-folded, and the end thereof is joined by heat sealing to seal the paper 3 in the main body 2.
Thereafter, a perforation is formed in the top surface portion 21 of the main body portion 2 to provide a cleaved portion 23, and the urging member 4 is attached to the bottom surface portion 22 and both short side surface portions 26 to thereby form a rectangular parallelepiped pop-up paper. The container 1 is formed.

[Operation of pop-up paper container]
The operation of the pop-up paper container 1 will be described below.
When not in use, the pop-up paper container 1 has the largest height of the main body 2, and as the paper 3 is pulled out from the main body 2 through the cleaved portion 23 and the remaining amount decreases. , The stacking height of the paper 3 is reduced. Along with this, there is a space margin in the main body 2, but since the urging member 4 is urged to expand both short side surfaces 26 outward in the longitudinal direction, there is a space margin. The two sides are spread outward by the amount of the occurrence of, and no extra space (a space between the uppermost portion of the laminated paper 3 and the top surface 21 of the main body 2) is generated in the main body 2.
In this manner, even when the remaining amount of the stored paper 3 is small, the both short side surfaces 26 are greatly expanded outward, so that no extra space is formed and the paper 3 is interfolded. The effect that the next paper 3 is properly 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 urging member 4 higher than the rigidity of the main body 2 is urged from the opposed bottom surface 22 of the cleaved portion 23 to both short side surfaces 26. The urging member 4 is restored in accordance with a decrease in the amount of the paper 3. Therefore, when a space is generated due to a decrease in the amount of the paper 3, the urging member 4 is restored and the main body 2 is deformed. Can be extinguished.
That is, when the previous paper 3 is pulled out from the cleaved portion 23, no space is formed around the next paper 3 and the space between the previous paper 3 and the next paper 3 is free. Is not applied, and there is no fear that the folded state of the papers 3 is canceled or the frictional resistance that can withstand the tensile stress is lost.
Therefore, even when the remaining amount becomes small, no space is 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 section 2 can be maintained.

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

Further, according to the first embodiment, since the urging member 4 has a length approximately half the outer peripheral dimension of the main body 2, the urging member 4 is restored and loses the urging force. 2 is the one surface (the top surface 21 and the upper half of the short side surfaces 26 on both sides thereof), and the other approximately half is the other surface (the bottom surface 22 and the lower half of the short side surfaces 26 on both sides thereof). As a result, one surface comes into contact with the other surface.
For this reason, no space is formed by the urging of the urging member 4 until the last one of the papers 3, and a good take-out effect can be maintained for the last one of the papers.

  Further, according to the first embodiment, since the mass of the urging member 4 is larger than that of the main body 2, when the remaining amount of the paper 3 becomes small, the pop-up type paper is smaller than the resistance when the paper 3 is taken out. The mass of the container 1 is reduced, and there is no fear that the entire body 2 is lifted.

[Second embodiment]
Next, a second embodiment 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 above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

[Configuration of pop-up paper container]
As shown in FIG. 3, the main body 2 has upper and lower halves formed of two members having different degrees of rigidity. Specifically, the upper half is formed of a low-rigid material 2a, which is a flexible material of the main body 2 of the first embodiment, and the lower half is the same flexible material as the biasing member 4 of the first embodiment. It is formed of a high rigidity material 4a as an urging portion, which is an elastic material and has a higher rigidity than the low rigidity material 2a. Further, the high-rigidity material 4a is in a state of being bent outward and convex.
That is, the high-rigidity material 4 a is a member that forms part of the bottom surface 22 and both short side surfaces 26 of the main body 2. In other words, the high-rigidity soft material 4a constitutes the main body 2 and also constitutes the urging portion.
The high-rigidity soft material 4 a is a lower concept of the urging portion, like the urging member 4.

[Production method of pop-up paper container]
As an example of a method of manufacturing the pop-up paper container 1 according to the second embodiment, a laminate of the paper 3 is placed substantially at the center of a rectangular flat high rigidity material 4a, and a planar rectangular shape is placed from above. A low rigidity material 2a having a shape is placed thereon, and then the low rigidity material 2a and the high rigidity material 4a are superposed on each other and heat sealed to accommodate a laminate of paper 3. Is mentioned. At this time, the high-rigidity material 4a is bent outwardly of the main body 2 and heat-sealed.
Further, three sides of the periphery of the low-rigid material 2a and the high-rigid material 4a are heat-sealed to form an opening, and after the laminated body of the paper 3 is accommodated from this opening, the opening is heat-sealed. It may be a method.

[Operation of pop-up paper container]
In the pop-up type paper container 1 according to the second embodiment, the height 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 cleaved portion 23 and the remaining amount is Decreases, the stacking height of the paper 3 decreases. Along with this, a spatial margin is created in the main body 2, but the high rigidity material 4 a is bent to the outside of the main body 2 so as to protrude outward, so that the rectangular shape of the main body 2 in a plan view is obtained. Since the bending is eliminated so that each of the four sides expands outward, the low-rigid material 2a is also expanded outward at the same time, and the main body 2 is moved outward by an amount corresponding to a space margin. And no extra space (space between the uppermost part of the laminated paper 3 and the low-rigid material 2a) is generated in the main body 2.
In this way, even when the amount of the stored paper 3 is small, the four sides of the main body 2 expand outward, so that no extra space is formed. The effect of properly exposing the count paper 3 from the cleaved portion 23 is maintained.

[Effect of pop-up paper container]
According to the second embodiment of the present invention, the same effects as in the first embodiment can be obtained.
Further, the following operational effects can be obtained.
In the second embodiment, the lower half of the main body 2 is formed of the high rigidity soft material 4a, and the high rigidity soft material 4a is bent to the outside of the main body 2 so as to protrude. The degree material 4a eliminates bending by expanding the four sides of the main body part 2 in plan view outward (square) due to the reduction of the paper 3, and removes the low-rigid soft material 2a from more directions. In this case, the space between the low-rigid material 2a and the paper 3 can be prevented from being generated more stably.
Therefore, even when the remaining amount becomes small, no space is 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 section 2 can be maintained favorably.

(Modification)
Next, a modified example 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 above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

[Configuration of Modification]
As shown in FIG. 4C, the urging member 4b in the modified example 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 attached over the bottom surface 22 and the side surface of the main body 2, but the heat sealing portion 24 is attached to both short side surfaces 26. It is not provided up to the height position, and the end is located below the heat seal portion 24.
The urging member 4b has a convex surface attached to the bottom surface 22.

[Operation of Modified Example]
As shown in FIGS. 4A and 4B, the pop-up paper container 1 when not in use is in a state where the height of the main body 2 is the largest, and the main body 2 is opened via the cleaved portion 23. As the paper 3 is pulled out from the section 2 and the remaining amount decreases, the stacking height of the paper 3 decreases. Along with this, there is a spatial margin in the main body 2, but the urging member 4b is urged so as to pull down the two short side surfaces 26 outward and downward in the longitudinal direction. As a result, both side surfaces are pulled down outward and downward, and no extra space (space between the uppermost portion of the laminated paper 3 and the top surface 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 stuck to the bottom portion 22, so that the remaining amount decreases and the urging member 4b is restored. Then, the central portion protrudes in a convex shape and pushes up the bottom portion 22 to the inside of the main body portion 2, whereby the laminated paper 3 remaining in the main body portion 2 is pushed up to the top surface portion 21. .
In this manner, even when the amount of the stored paper 3 is small, both short side surfaces 26 are pulled outward and downward, and the bottom surface 22 is pushed up to move the paper 3 to the top surface 21. By being pushed up, no extra space is formed, and the effect that the next paper 3 is properly 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 in the first embodiment and the second embodiment can be obtained.
Further, the following operational effects can be obtained.
According to the modification, as the remaining amount of the paper 3 decreases, the urging member 4b bends so as to push up the bottom portion 22 of the main body 2 by restoration, so that the substantial outer peripheral dimension of the main body 2 is reduced. While doing so, the biasing member 4b itself curves inward so as to crush the space of the main body 2.
For this reason, the paper 3 is pushed up to the cleaved portion 23 at the same time that no space is formed in the main body 2, and the take-out effect can be maintained more favorably.

It should be noted that the present invention is not limited to the first embodiment, the second embodiment, and the modifications, and it is needless to say that the specific structure can be appropriately changed.
Specifically, the urging member 4 may be not only a plate-shaped member but also a rod-shaped or strip-shaped member, and any structure may be used as long as the space in the main body 2 can be eliminated by the urging force.
Although the high-rigidity material 4a forms the lower half of the main body, it may also form the lower half of the bottom surface 22 and the short side surfaces 26.

[Example 1]
In Example 1, the pop-up paper container 1 in which the urging member 4 was attached to the bottom surface 22 of the main body 2 was used (type A corresponding to the first embodiment).
The main body 2 uses a 30 μm thick polyethylene (PE) sheet as a flexible material. The dimensions of the main body 2 when not in use are a longitudinal dimension of 300 mm, a lateral dimension of 140 mm, and a height dimension of 80 mm.
The rigidity of the polyethylene sheet is 2.3 cm as measured by the cantilever method (45 ° inclined surface).
As the paper 3, a stack of 200 sheets (“Erier paper towel double 200 sets 400 sheets (medium format)” manufactured by Daio Paper Co., Ltd.) was stored in the main body 2.
The urging member 4 uses a 90-μm-thick polyester plate as a material, and its dimensions are 400 mm in a long dimension and 140 mm in a short dimension. Here, the urging member 4 is attached to both short side surfaces 26 so as to extend from the bottom surface 22 by 50 mm at a time, because the longitudinal dimension of the bottom surface 22 is 300 mm.
The rigidity of the polyester plate is 7.5 cm as measured by the cantilever method (45 ° inclined surface).

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

[Example 3]
In Example 3, the pop-up paper container 1 in which the bottom surface portion 22 of the main body 2 was cut out and the high rigidity material 4a was attached was used (type B corresponding to the second embodiment).
The low rigidity 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 lateral dimension of 140 mm, and a height dimension of 80 mm.
The rigidity of the polyethylene sheet is 2.3 cm as measured by the cantilever method (45 ° inclined surface).
The same paper 3 as in Example 1 was accommodated in the main body 2.
The high-rigid soft material 4a uses a polyester plate having a thickness of 90 μm as a material, and has a length of 400 mm and a width of 140 mm. Here, the high rigidity material 4a is attached to both short side surfaces 26 so as to extend from the bottom surface 22 by 50 mm at a time, since the longitudinal dimension of the bottom surface 22 is 300 mm.
The rigidity of the polyester plate is 7.5 cm as measured by the cantilever method (45 ° inclined surface).

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

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

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

With respect to the pop-up paper containers 1 of Examples 1-4 and Comparative Examples 1 and 2, the papers 3 are pulled out from the cleaved portion 23 one by one from the stage where the number of the stored papers 3 reaches 30. In this case, whether the next paper 3 was exposed from the cleaved portion 23 or dropped into the main body 2 was repeated three times in each case.
Further, when the 30th remaining paper 3 was pulled out, it was checked whether the pop-up paper container 1 itself was lifted together.
Pulling out the paper from the cleaved portion 23 means that only the paper 3 exposed from the cleaved portion 23 is gripped and pulled upward.
The above results are shown in Tables 1 and 2.

From the results shown in Table 1, regarding the drop of the paper 3, Examples 1 and 3 in which the thickness of the urging member 4 or the high rigidity material 4a is 90 μm are Comparative Examples 1 and 2 (Comparative Example 2 is the main body 2 Was excluded because the thickness was different from that of Example 1-4). Specifically, as a result of calculating the average number of dips from three implementations, the average of Example 1 was 5 times, the average of Example 3 was 2 times, the average of Comparative Example 1 was 12 times, and the average of Comparative Example 2 was 14 times. Met.
Therefore, it was confirmed that Examples 1 and 3 exhibited advantages superior to Comparative Examples 1 and 2.

Further, in Examples 2 and 4 in which the thickness of the urging member 4 or the high-rigidity material 4a is 200 μm, the number of depressions is three times, and there is no difference. It could be confirmed.
Therefore, it was confirmed that Examples 2 and 4 exhibited remarkable effects with respect to Comparative Examples 1 and 2.
From the above, it is considered that the provision of the member having a high degree of softness suppresses the formation of the space in the main body 2, thereby reducing the number of drops.
In addition, the better result was obtained when the bending resistance was 15 cm than 7.5 cm. The higher the bending resistance was, the larger the restoring force of the bending was, and therefore, the suppression of the space formation was more effective. It is thought that it was strictly realized.
Also, comparing Comparative Example 1 and Comparative Example 2, when the rigidity of the main body 2 is high, a drop frequently occurs from the stage where the number of remaining sheets is large as compared with the case where the rigidity is low. From this, it was confirmed that even if the rigidity of the main body 2 was simply increased, it was not effective in preventing the drop. In addition, it is considered that the increased rigidity of the main body 2 improves the shape retention of the main body 2, thereby generating a larger space between the paper and the top surface 21.

From the results shown in Table 2, the lifting of the pop-up paper container 1 itself did not occur in any of Examples 1 to 4.
On the other hand, in Comparative Examples 1 and 2, when pulling out the paper 3, both the pop-up paper container 1 itself was lifted, and the paper 3 could not be pulled out.
This is probably because the body provided with the urging member 4 having a large thickness dimension or the high rigidity material 4a has a larger weight of the main body 2 than the comparative example 1.
In Comparative Example 2, the main body 2 of Examples 1 to 4 having different thickness and softness was used, but no significant difference could be confirmed.

DESCRIPTION OF SYMBOLS 1 Pop-up type paper container 1a Pop-up type paper container 2 Main part 2a Low rigidity material 2b Bag main body 2b1 Surface 3 Paper 3a Household thin paper 4 Urging member 4a High rigidity material (urging part)
4b urging 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 (6)

A pop-up paper container comprising: a plurality of stacked papers; and a main body made of a rectangular parallelepiped flexible material that stores the papers,
The main body portion is a cleaved portion provided on the top surface portion, from which the paper can be taken out, and an urging portion formed by extending from the bottom portion to both side portions along the extending direction of the cleaved portion, With
The urging portion has a higher rigidity than a portion 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, the outer side of the main body portion. It is in a state bent to convex ,
The pop-up type paper container , wherein the urging portion has a central portion that is convexly curved toward an upper surface in accordance with a decrease in the paper.   The pop-up paper container according to claim 1, wherein the urging unit includes a urging member attached to the bottom surface and the side surface.   The pop-up paper container according to claim 2, wherein the urging member is a plate-shaped member.   The pop-up paper container according to claim 1, wherein the urging portion is configured by a part of the bottom surface portion and the side surface portion of the main body portion.   The pop-up paper container according to any one of claims 1 to 4, wherein the urging portion is formed to have a length approximately half the outer peripheral dimension of the main body. The pop-up type paper container according to any one of claims 1 to 5 , wherein the urging part has a larger mass than a part other than the urging part among the parts constituting the main body part. body.