Sheet for simple container and simple container

Abstract

To provide a sheet for a simple container with enhanced versatility that can be easily and stably self-support.SOLUTION: A sheet 2 for a simple container according to an embodiment of the present invention is used as a simple container 1 together with a bag 4 having an opening 41. The sheet 2 for the simple container is formed with a pair of bottom rule marks 11a, 11b apart from each other. On a pair of side surface parts R2, R3 outside the pair of bottom rule marks 11a, 11b in an X direction crossing with the pair of rule marks for bottom line 11a, 11b, a pair of hole parts 15a, 15b from which parts 42a, 42b of the bag 4 can be drawn are respectively formed.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a sheet for a simple container and a simple container. [Background technology]

[0002] Toilets are a pressing issue during disasters such as earthquakes. In preparation for earthquakes and other disasters, evacuation centers and support stations for stranded commuters are established in various locations. However, the number of existing toilets at evacuation centers and other facilities is far too small for the number of victims expected in a large-scale disaster, and it can take days to weeks for temporary toilets to be installed at evacuation centers. Furthermore, most existing emergency toilets are portable toilets that require a toilet bag to be attached to the toilet seat. These emergency toilets are equipped with a toilet bag and a coagulant, and are widely stocked in government offices, local governments, hospitals, schools, and other facilities. However, in the event of a disaster, when homes and buildings are damaged, the toilets themselves are also damaged. At the same time, the sewer system is also damaged, disrupting lifelines and water supplies, often rendering the toilets unusable. In such cases, the toilets in the emergency toilets described above have large toilet bags, making them difficult to unfold and use.

[0003] While chair-type toilets and cardboard-type portable toilets have been widely used, chair-type toilets are in short supply, and cardboard toilets are less durable and unhygienic, making them difficult to accommodate large numbers of disaster victims. If alternatives to toilets are unavailable, disaster victims are forced to use trash cans, buckets, or dig holes in the ground. Without alternatives, disaster-prevention toilets stockpiled in various locations cannot be effectively utilized, and it is expected that many disaster victims will concentrate on the limited number of existing toilets, creating long lines. In such a situation, the interruption of water supplies will prevent maintenance, deteriorating the toilet environment. This could lead to disaster victims refraining from eating and drinking to avoid toilet use, resulting in various illnesses and even deaths. This has led to a growing demand for portable toilets that can be used even in places without toilets.

[0004] Examples of portable toilets include those described in Patent Documents 1 and 2. In the portable toilet described in Patent Document 1, the opening of the bag is specially shaped, and a guide wall for excrement is provided inside the bag. In the portable toilet described in Patent Document 2, when the foldable frame is unfolded, the four corners of the bottom of the frame are held and reinforced by reinforcing members, and a bag is placed over the frame and fixed to the frame by fixing members. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3174383 [Patent Document 2] Japanese Patent Application Publication No. 8-224190 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the portable toilet described in Patent Document 1 is not self-supporting but is designed to be handheld, making it difficult to use when urinating. On the other hand, the portable toilet described in Patent Document 2 is self-supporting, but has many parts and bulky reinforcing and fixing members, making it difficult to carry and assemble. Furthermore, the portable toilet described in Patent Document 2 is difficult to use with large toilet bags that hang over the toilet bowl, and the size of the bags that can be used with the portable toilet is limited, making it less versatile. Therefore, with such portable toilets, it is difficult to utilize emergency toilets stockpiled in various locations or commercially available garbage bags, making it difficult to fully alleviate the toilet shortage. Therefore, there is a strong demand for a portable toilet that is highly versatile and can be used with large bags, and that can be easily and stably self-supported. If such a portable toilet were to be realized, it would be expected that the toilet shortage could be alleviated by utilizing the many emergency toilets stockpiled in various locations.

[0007] An object of the present invention is to provide a sheet for a simple container and a simple container that are highly versatile and can be easily and stably made to stand on their own. [Means for solving the problem]

[0008] The simple container sheet of the present invention is a simple container sheet used as a simple container together with a bag having an opening, and has a pair of bottom line lines that are spaced apart from each other, and a pair of withdrawal opening portions that can withdraw part of the bag are each formed in a pair of regions outside the pair of bottom line lines in a cross direction that intersects the pair of bottom line lines.

[0009] This simple container sheet is placed on either the inside or outside of a bag, and when the simple container sheet is folded along a pair of bottom lines to form a U-shaped cross section, a portion of the bag is pulled out through a pair of openings formed in the simple container sheet. Here, the simple container sheet folded into a U-shape attempts to open by moving its two sides away from each other, or to close by moving them toward each other. In contrast, with the above-mentioned simple container sheet, when a portion of the bag is pulled out through the pair of openings, the opening of the bag is narrowed to fit the size of the opening of the simple container sheet folded into a U-shape, and the bag is aligned with the simple container sheet, thereby maintaining its self-standing state. Specifically, while the weight of the bag pulled out through the pair of openings causes both sides of the simple container sheet to collapse outward, friction when the pulled portion of the bag contacts the openings prevents the both sides of the simple container sheet from collapsing too far outward, thereby maintaining the bag's self-standing state along the simple container sheet. Thus, with the above-described simple container sheet, even when a large bag is used, by pulling a portion of the bag through the pull-out opening, the size of the bag's opening can be adjusted to match the size of the opening of the simple container sheet folded into a U-shape, and the bag can be easily made to stand upright along the simple container sheet. Therefore, when the above-described simple container sheet is used in a simple toilet, large bags that hang over the toilet bowl can be applied, making it highly versatile and allowing for the use of emergency toilets stockpiled in various locations and commercially available garbage bags. Furthermore, when pull-out openings are formed in a pair of regions outside the pair of bottom ruled lines, as in the above-described simple container sheet, it is easier to pull a portion of the bag through the pull-out opening, making it easier to adjust the shape of the bag. Furthermore, by pulling a portion of the bag from both sides of the simple container sheet in this way, the force acting from the bag on the simple container sheet can be evenly distributed, preventing the free-standing simple container sheet from collapsing to one side when pulling out a portion of the bag. Therefore, the above-described simple container sheet allows for a stable, self-standing simple container sheet.

[0010] Furthermore, once the simple container has been used, the contents of the simple container can be sealed in the bag by closing the bag. Therefore, even if the contents of the simple container are, for example, strong-smelling items such as excrement, odor leakage can be reduced. If the simple container is a simple toilet, adding a coagulant and a deodorizer before or after use can solidify moisture such as urine and further reduce odor leakage. Furthermore, a simple container can be made with at least a simple container sheet and a bag. The simple container sheet can be folded and does not take up much space when folded. Therefore, the simple container sheet is extremely portable.

[0011] The above-mentioned simple container sheet may be formed in a rectangular shape, and the pair of ruled lines for the base may be formed parallel to a pair of opposing sides of the simple container sheet in the intersecting direction. In this case, the simple container after assembly can be formed into a roughly rectangular box shape, thereby improving the usability of the simple container.

[0012] The above-mentioned simple container sheet may be folded back at a pair of bottom creases, and may be folded back at a fold crease located between the pair of bottom creases in the opposite direction to the pair of bottom creases. In this case, the simple container sheet can be folded in an accordion-like shape, allowing the simple container sheet to be folded more compactly. This further improves the portability of the simple container sheet.

[0013] In the above-mentioned simple container sheet, the pair of pull-out openings may be a pair of holes that penetrate the simple container sheet or a pair of cutouts that are cut into the simple container sheet. In this case, a pair of pull-out openings through which a part of the bag can be pulled out can be easily realized.

[0014] In the above-mentioned simple container sheet, the center of the simple container sheet may be located at the center between the pair of bottom ruled lines in the cross direction, and the pair of withdrawal openings may be formed at positions symmetrical with respect to the center of the simple container sheet. In this case, when assembling the simple container, it is easy to grasp the positions of the pair of withdrawal openings formed in the simple container sheet, and the task of withdrawing a portion of the bag from the pair of withdrawal openings can be easily performed. Therefore, the above configuration further improves the ease of assembling the simple container.

[0015] In the above-mentioned simple container sheet, the pair of withdrawal openings may be formed at positions that pass through the center of the simple container sheet and intersect a center line that extends in the transverse direction. In this case, when assembling the simple container, it is easier to grasp the positions of the pair of withdrawal openings formed in the simple container sheet, making it easier to withdraw portions of the bag through the pair of withdrawal openings. Therefore, the above configuration further improves the ease of assembling the simple container.

[0016] The above-mentioned simple container sheet may be folded back at a pair of bottom creases, and in a pair of regions outside the pair of bottom creases in the cross direction, the sheet may be folded back at a pair of top creases extending along the direction of the pair of bottom creases in the opposite direction to the pair of bottom creases. In this case, the portion folded back at the pair of top creases can cover the opening of the bag. This allows the bag opening to be kept appropriately open to match the size of the simple container, improving the usability of the simple container. Furthermore, the above-mentioned configuration can reduce discomfort caused by the feet touching the opening of the bag, for example, when using the simple container as a simple toilet.

[0017] In the above-described simple container sheet, the pair of top edge creases intersect with a pair of sides of the simple container sheet that are opposite in the direction of extension of the pair of bottom edge creases, a first of the pair of top edge creases may have a pair of first top edge cutouts cut from the pair of sides and extending toward each other along the first top edge crease, and a second of the pair of top edge creases may have a pair of second top edge cutouts cut from the pair of sides and extending toward each other along the second top edge crease. In this case, by sandwiching the opening of the bag between the pair of first top edge cutouts and the pair of second top edge cutouts, the opening of the bag can be more reliably kept appropriately open to match the size of the simple container, thereby further improving the usability of the simple container.

[0018] In the above-mentioned simple container sheet, the pair of withdrawal openings may be a pair of holes formed at positions that respectively intersect with a pair of top-edge creases. In this case, the simple container sheet, folded along the pair of bottom-edge creases so as to form a U-shaped cross section, is placed inside a bag, and the shape of the bag can be stabilized by withdrawing a portion of the bag outside the simple container sheet through the pair of holes, making it easy to realize a self-standing simple container. Furthermore, by forming the pair of holes at positions that respectively intersect with the pair of top-edge creases, it is easy to grasp the positions of the pair of holes, and therefore it is easy to withdraw a portion of the bag through the pair of holes. Therefore, the above-mentioned configuration further improves the ease of assembling the simple container.

[0019] In the above-described simple container sheet, the pair of holes may include a first hole formed at a position intersecting a first of the pair of top-edge creases and a second hole formed at a position intersecting a second of the pair of top-edge creases, the first hole having a first hole cutout extending away from the first hole along the first top-edge crease, and the second hole having a second hole cutout extending away from the second hole along the second top-edge crease. In this case, the task of pulling out a portion of the bag through the pair of holes is further facilitated, further improving the ease of assembling the simple container.

[0020] In the above-mentioned simple container sheet, each of the pair of holes may extend in the extension direction, and the width of each of the pair of holes along the extension direction may be smaller than half the distance between a pair of sides along the extension direction. By having each of the pair of holes extend in the extension direction in this way, it becomes easier to grasp the position of the pair of holes and to pull out part of the bag through the pair of holes. Furthermore, by having the width of each of the pair of holes smaller than half the distance between the pair of sides, it is possible to prevent the pair of holes from becoming excessively large, thereby preventing the simple container sheet from tearing.

[0021] In the above-mentioned simple container sheet, the pair of pull-out openings may be a pair of holes formed in an area outside the pair of upper edge ruled lines and offset from a center line that passes through the center of the simple container sheet and extends in the cross direction. In this case, the simple container sheet can be easily folded using a machine such as a paper folding machine.

[0022] The above-mentioned simple container sheet may extend flatly from a pair of bottom creases to a pair of opposing sides of the simple container sheet outside the pair of bottom creases in the transverse direction without being folded back, and the pair of withdrawal openings may be a pair of holes formed at a position closer to the pair of sides than the pair of bottom creases. In this case, when a bag is placed inside the simple container sheet folded along the pair of bottom creases to form a U-shaped cross section, the shape of the bag can be stabilized by withdrawing a portion of the bag inside the simple container sheet through the pair of holes, thereby easily realizing a self-standing simple container. Furthermore, by forming the pair of holes closer to the pair of sides than the pair of bottom creases, the position of the pair of holes can be easily grasped, facilitating the operation of withdrawing a portion of the bag through the pair of holes. Therefore, the above configuration further improves the assemblability of the simple container.

[0023] The above-described simple container sheet extends flatly from a pair of bottom creases to a pair of opposing sides of the simple container sheet outside the pair of bottom creases in the transverse direction without being folded back. A pair of protrusions protruding outward from each of the pair of sides may be formed on the pair of sides, and the pair of withdrawal openings may be a pair of holes formed in each of the pair of protrusions. In this case, when a bag is placed inside the simple container sheet folded along the pair of bottom creases to form a U-shaped cross section, the shape of the bag can be stabilized by withdrawing a portion of the bag inside the simple container sheet through the pair of holes, thereby easily realizing a self-standing simple container. Furthermore, by forming a pair of holes in the pair of protrusions protruding from the pair of sides, the position of the pair of holes can be easily grasped, facilitating the operation of withdrawing a portion of the bag through the pair of holes. Therefore, the above configuration further improves the ease of assembly of the simple container.

[0024] The simple container according to the present invention comprises a support made of any of the above-described simple container sheets and a bag having an opening, the support being placed on the inside or outside of the bag in a state where it is folded along a pair of bottom creases, and a portion of the bag being pulled out through a pair of pull-out openings. Because this simple container comprises any of the above-described simple container sheets, it can achieve the effects described above. [Effects of the Invention]

[0025] According to the present invention, the device is highly versatile and can be made to stand on its own easily and stably. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view showing a simple container of the first embodiment. [Figure 2] FIG. 2 is a plan view showing the simple container of FIG. [Figure 3] FIG. 3 is a cross-sectional view of the simple container taken along line III-III in FIG. [Figure 4] FIG. 4 is a plan view showing the simplified container sheet of FIG. 1 in an unfolded state. [Figure 5] FIG. 5 is a perspective view showing the folded state of the sheet for simple containers of FIG. [Figure 6] FIG. 6 is a perspective view showing the state in which the sheet for simple containers of FIG. 5 is further folded. [Figure 7] FIG. 7 is a perspective view showing the simplified container sheet of FIG. 5 or 6 in an opened state. [Figure 8] FIG. 8 is a perspective view showing a simple container according to the second embodiment. [Figure 9] FIG. 9 is a perspective view showing the sheet for simple containers of FIG. [Figure 10] FIG. 10 is a plan view showing the simplified container sheet of FIG. 8 in an unfolded state. [Figure 11] FIG. 11 is a perspective view showing a simple container according to the third embodiment. [Figure 12] 12 is a perspective view showing the sheet for simple containers of FIG. [Figure 13] FIG. 13 is a plan view showing the simplified container sheet of FIG. 11 in an unfolded state. [Figure 14] FIG. 14 is a perspective view showing a simple container according to the fourth embodiment. [Figure 15] 15 is a perspective view showing the sheet for simple containers of FIG. 14. FIG. [Figure 16] FIG. 16 is a plan view showing the simplified container sheet of FIG. 14 in an unfolded state. [Figure 17] FIG. 17 is a perspective view showing a simple container according to the fifth embodiment. [Figure 18] 18 is a perspective view showing the sheet for simple containers of FIG. 17. FIG. [Figure 19] FIG. 19 is a plan view showing the simplified container sheet of FIG. 17 in an unfolded state. [Figure 20] FIG. 20 is a perspective view showing a simple container according to the sixth embodiment. [Figure 21] FIG. 21 is a perspective view showing the sheet for simple containers of FIG. [Figure 22] FIG. 22 is a plan view showing the simplified container sheet of FIG. 20 in an unfolded state. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, preferred embodiments of the sheet for a simple container and the simple container according to the present invention will be described in detail with reference to the drawings. In this embodiment, a simple toilet will be described as an example of the simple container of the present invention. However, the simple container of the present invention is not limited to a simple toilet, and may be, for example, a trash can or storage container to be used in an emergency or while out and about. The same or corresponding parts in the drawings will be designated by the same reference numerals.

[0028] [First embodiment] As shown in Figures 1 to 3, the simple container 1 of the first embodiment includes a support 3 made of a simple container sheet 2, and a bag 4 having an opening 41. The bag 4 may be a bag manufactured to fit the size of the simple container sheet 2, or may be a commercially available garbage bag.

[0029] [Simple container sheet] As shown in Figures 4 to 7, the sheet 2 for a simple container is a single rectangular sheet-like member. The sheet 2 for a simple container can be easily folded and preferably does not take up much space when folded. The sheet 2 for a simple container preferably has enough stiffness (stiffness) to adequately maintain its shape when folded. The sheet 2 for a simple container is, for example, paper, but may also be a resin sheet or the like. The thickness of the sheet 2 for a simple container is, for example, 0.01 mm or more and 1 mm or less.

[0030] When storing or carrying the simple container sheet 2, the simple container sheet 2 is in a folded state as shown in Figure 5 or Figure 6, and when using the simple container sheet 2 as a simple container 1, it changes from the folded state shown in Figure 5 or Figure 6 to the unfolded state as shown in Figure 7.

[0031] As shown in Fig. 4, when viewed from above, the unfolded sheet 2 for simple containers has a rectangular shape with the X direction as the longitudinal direction and the Y direction as the lateral direction, when the X direction (cross direction) and the Y direction (extension direction) are defined as being orthogonal to each other. A plan view refers to viewing the sheet 2 for simple containers along a direction perpendicular to the unfolded sheet 2 for simple containers. In the following, unless otherwise specified, the sheet 2 for simple containers will be described as being in an unfolded state (as shown in Fig. 4).

[0032] The simple container sheet 2 includes a pair of sides 21a, 21b facing each other in the Y direction and a pair of sides 22a, 22b facing each other in the X direction. Sides 21a, 21b are long sides of the simple container sheet 2 and extend linearly along the X direction. Sides 22a, 22b are short sides of the simple container sheet 2 and extend linearly along the Y direction perpendicular to sides 21a, 21b. The length of sides 21a, 21b is, for example, 40 cm or more and 100 cm or less, and the length of sides 22a, 22b is, for example, 20 cm or more and 40 cm or less.

[0033] The sheet 2 for simple containers includes a center line XC that is the center in the X direction, a center line YC that is the center in the Y direction, and a center CP where the center lines XC and YC intersect. The center line XC is a line that passes through the center of the sheet 2 for simple containers in the X direction and extends along the Y direction through the center CP. The center line YC is a line that passes through the center of the sheet 2 for simple containers in the Y direction and extends along the X direction through the center CP.

[0034] The simple container sheet 2 is formed with a pair of bottom line creases 11a, 11b, a pair of top line creases 12a, 12b, a fold line 13, a folding line 14, and a pair of holes 15a, 15b (a pair of pull-out openings).

[0035] Bottom Rule The pair of bottom ruled lines 11a, 11b are ruled lines formed at positions spaced apart from each other on the sheet 2 for simple containers. "Rule lines" are lines that serve as guides for folding the sheet 2 for simple containers. "Rule lines" are, for example, lines that make the sheet 2 for simple containers easier to fold, and are also called weakening lines or crease lines. "Rule lines" may be, for example, lines (linear regions) that make the sheet 2 for simple containers easier to fold by recessing the sheet 2 for simple containers or by folding the sheet 2 for simple containers once. The pair of bottom ruled lines 11a, 11b are, for example, formed at positions spaced apart from each other in the X direction and extend linearly along the Y direction. The pair of bottom ruled lines 11a, 11b extend, for example, along the Y direction from side 21a to side 21b.

[0036] The pair of bottom ruled lines 11a, 11b are formed, for example, parallel to each other. The pair of bottom ruled lines 11a, 11b extend parallel to the pair of sides 22a, 22b and are perpendicular to the pair of sides 21a, 21b. In this specification, "parallel" does not only mean perfectly parallel, but also includes cases with a slight error (for example, about 10° or less). In this specification, "perpendicular" does not only mean perfectly perpendicular, but also includes cases with a slight error (for example, about 10° or less).

[0037] The pair of bottom creases 11a, 11b are respectively positioned at a pair of positions sandwiching the center line XC of the simple container sheet 2. That is, the pair of bottom creases 11a, 11b are positioned so that the center line XC of the simple container sheet 2 is located between the pair of bottom creases 11a, 11b. The pair of bottom creases 11a, 11b are, for example, positioned symmetrically with respect to the center line XC. That is, the distance d1a in the X direction from the center line XC to the bottom crease 11a is the same as the distance d1b in the X direction from the center line XC to the bottom crease 11b. In this case, the center CP of the simple container sheet 2 is at the same position as the centers of the bottom creases 11a, 11b in the X direction. Note that in this specification, "same" does not only mean completely identical, but also includes cases where there is a slight error (for example, about 5 mm or less).

[0038] Top border The pair of top-edge ruled lines 12a, 12b are ruled lines formed in a pair of regions (a pair of side surface portions R2, R3 described below) outside the pair of bottom-edge ruled lines 11a, 11b in the X direction. The pair of top-edge ruled lines 12a, 12b are formed in positions facing each other in the X direction with the pair of bottom-edge ruled lines 11a, 11b in between, and extend linearly along the Y direction. The pair of top-edge ruled lines 12a, 12b extend in the Y direction, for example, from side 21a to side 21b. The pair of top-edge ruled lines 12a, 12b are formed, for example, parallel to the pair of bottom-edge ruled lines 11a, 11b. The pair of top-edge ruled lines 12a, 12b are formed parallel to the pair of sides 22a, 22b of the simple container sheet 2 and perpendicular to the pair of sides 21a, 21b of the simple container sheet 2.

[0039] The pair of top edge ruled lines 12a, 12b are arranged, for example, at positions symmetrical with respect to the center line XC of the simple container sheet 2. That is, the distance in the X direction from the center line XC to the top edge ruled line 12a (i.e., the sum of distances d1a and d2a) is the same as the distance in the X direction from the center line XC to the top edge ruled line 12b (i.e., the sum of distances d1b and d2b). Note that distance d2a is the same as distance d1a, and distance d2b is the same as distance d1b.

[0040] The top ruled line 12a is disposed at the center between the bottom ruled line 11a and the side 22a in the X direction, and the top ruled line 12b is disposed at the center between the bottom ruled line 11b and the side 22b in the X direction. Therefore, the distance d2a is, for example, the same as the distance d3a from the top ruled line 12a to the side 22a, and the distance d2b is, for example, the same as the distance d3b from the top ruled line 12b to the side 22b. In this manner, the bottom ruled line 11a, the top ruled line 12a, and the side 22a are aligned at equal intervals from the center line XC. Similarly, the bottom ruled line 11b, the top ruled line 12b, and the side 22b are aligned at equal intervals from the center line XC. In this specification, "equally spaced" refers not only to perfectly equal intervals but also to slight variations (for example, 5 mm or less).

[0041] [Folding lines] The folding line 13 is a line formed between the pair of bottom creases 11a, 11b. The folding line 13 is formed, for example, on the center line XC of the simple container sheet 2. In other words, the folding line 13 passes through the center of the pair of bottom creases 11a, 11b in the X direction. The folding line 13 extends linearly from side 21a to side 21b along the center line XC and is formed parallel to the pair of bottom creases 11a, 11b. Therefore, the pair of bottom creases 11a, 11b are arranged symmetrically with respect to the folding line 13.

[0042] [Folding lines] The folding lines 14 are lines for folding the simple container sheet 2. The folding lines 14 are formed, for example, on the center line YC of the simple container sheet 2. Therefore, the distance d4a in the Y direction from the folding lines 14 to the side 21a is the same as the distance d4b in the Y direction from the folding lines 14 to the side 22a. The folding lines 14 extend linearly from the side 22a to the side 22b along the center line YC, and are perpendicular to the pair of bottom lines 11a, 11b and the fold lines 13.

[0043] [Hole] The pair of holes 15a, 15b are respectively formed in a pair of regions (a pair of side surface portions R2, R3 described below) outside the pair of bottom ruled lines 11a, 11b in the X direction. That is, the pair of holes 15a, 15b are respectively formed in a pair of positions sandwiching the pair of bottom ruled lines 11a, 11b in the X direction. The pair of holes 15a, 15b face each other in the X direction, sandwiching the pair of bottom ruled lines 11a, 11b therebetween. Therefore, the pair of bottom ruled lines 11a, 11b are disposed between the pair of holes 15a, 15b in the X direction.

[0044] Each of the holes 15a, 15b is a through-hole that penetrates the sheet 2 for a simple container at a position away from the periphery of the sheet 2 for a simple container (i.e., the sides 21a, 21b, 22a, 22b). Each of the holes 15a, 15b has at least a size that allows portions 42a, 42b of a bag 4, which will be described later, to be pulled out, respectively. Being able to pull out portions 42a, 42b of the bag 4 means that portions 42a, 42b of the bag 4 can be pulled out from one side of the sheet 2 for a simple container through each of the holes 15a, 15b. Each of the holes 15a, 15b may extend to the periphery of the sheet 2 for a simple container, as long as portions 42a, 42b of the bag 4 can be pulled out.

[0045] Each of the holes 15a, 15b has, for example, a shape extending along the Y direction (for example, an ellipse). The width Wx of each of the holes 15a, 15b in the X direction is greater than the width Wy of each of the holes 15a, 15b in the Y direction. The width Wy of each of the holes 15a, 15b is, for example, less than the length of the simple container sheet 2 in the Y direction, i.e., half the distance in the Y direction between the pair of sides 21a, 21b (distance d4a or distance d4b).

[0046] The pair of holes 15a, 15b are arranged, for example, outside the pair of bottom ruled lines 11a, 11b, in positions symmetrical with respect to the center CP of the simple container sheet 2. Specifically, the pair of holes 15a, 15b are arranged in positions symmetrical with respect to the center line XC of the simple container sheet 2. Therefore, the distance in the X direction from the center line XC to the center of hole 15a (i.e., the sum of distances d1a and d2a) is the same as the distance in the Y direction from the center line XC to hole 15b (i.e., the sum of distances d1b and d2b). The pair of holes 15a, 15b may be arranged in positions symmetrical with respect to the center CP of the simple container sheet 2.

[0047] The pair of holes 15a, 15b are arranged, for example, at positions where they intersect with the pair of top-side ruled lines 12a, 12b, respectively. Hole 15a is arranged at a position where it intersects with the top-side ruled line 12a, and hole 15b is arranged at a position where it intersects with the top-side ruled line 12b. The positions where each hole 15a, 15b intersects with each top-side ruled line 12a, 12b mean positions where each hole 15a, 15b is arranged so as to overlap with each top-side ruled line 12a, 12b or an extension thereof. The centers of each hole 15a, 15b are arranged at positions where they intersect with each top-side ruled line 12a, 12b, i.e., on each top-side ruled line 12a, 12b. The centers of each hole 15a, 15b may be offset from each top-side ruled line 12a, 12b.

[0048] Furthermore, each of the holes 15a, 15b is disposed at a position intersecting the center line YC of the simple container sheet 2, i.e., at a position intersecting the folding line 14. That is, each of the holes 15a, 15b is disposed so as to overlap the center line YC or an extension thereof. The center of each of the holes 15a, 15b is disposed at a position intersecting the center line YC, i.e., on the center line YC. The centers of each of the holes 15a, 15b may be offset from the center line YC. Therefore, in this embodiment, the hole 15a is disposed at a position where the top edge ruled line 12a intersects with the center line YC, and the hole 15b is disposed at a position where the top edge ruled line 12b intersects with the center line YC. The center of the hole 15a is located, for example, at the point where the top edge ruled line 12a intersects with the center line YC, and the center of the hole 15b is located, for example, at the point where the top edge ruled line 12b intersects with the center line YC.

[0049] The positions and shapes of the holes 15a, 15b are not limited to the example shown in Fig. 4 and can be changed as appropriate. For example, the shape of the holes 15a, 15b is not limited to an ellipse but may be other shapes such as an oval, a circle, a semicircle, a rectangle, a rounded rectangle, a diamond, or a rounded diamond. The holes 15a, 15b may be formed at positions away from the upper ruled lines 12a, 12b or at positions away from the center line YC.

[0050] The sheet 2 for simple containers is further formed with a pair of hole cutouts 16a, 16b, a pair of hole cutouts 17a, 17b, a pair of upper edge cutouts 18a, 18b, and a pair of upper edge cutouts 19a, 19b.

[0051] [Hole cutout] The pair of hole cutouts 16a, 16b (first hole cutouts) are a pair of cut lines cut into the opening edge of the hole 15a (first hole). The cut lines are lines formed by cutting the sheet 2 for simple containers and are also called cutting lines. The cut lines can also be said to be slits cut into the sheet 2 for simple containers. The pair of hole cutouts 16a, 16b are cut into a pair of positions spaced apart in the Y direction on the opening edge of the hole 15a, and extend linearly along the Y direction away from each other from the pair of positions. Each hole cutout 16a, 16b is formed, for example, on the top edge ruled line 12a. Each hole cutout 16a, 16b may extend in a curved line, a wavy line, or the like.

[0052] The hole notch 16a extends from the opening edge of the hole 15a toward the side 21a along the top ruled line 12a. The hole notch 16b extends from the opening edge of the hole 15a toward the side 21b along the top ruled line 12a. The lengths of the hole notches 16a, 16b in the Y direction are, for example, the same as each other, but may be different from each other. The length of the hole notches 16a, 16b in the Y direction is, for example, shorter than the width Wy of each hole 15a, 15b.

[0053] The pair of hole cutouts 17a, 17b (second hole cutouts) are a pair of cut lines cut into the opening edge of hole 15b (second hole). The pair of hole cutouts 17a, 17b are cut into a pair of positions spaced apart in the Y direction on the opening edge of hole 15b, and extend linearly along the Y direction away from each other from the pair of positions. The pair of hole cutouts 17a, 17b are formed, for example, on top ruled line 12b. Each hole cutout 17a, 17b may extend in a curved line, a wavy line, or the like.

[0054] The hole notch 17a extends from the opening edge of the hole 15b toward the side 21a along the top ruled line 12b. The hole notch 17b extends from the opening edge of the hole 15b toward the side 21b along the top ruled line 12b. The lengths of the hole notches 17a, 17b in the Y direction are, for example, the same as each other, but may be different from each other. The length of the hole notches 17a, 17b in the Y direction is, for example, shorter than the width Wy of each hole 15b, 15b.

[0055] [Top edge notch] The pair of top edge notches 18a, 18b (first top edge notches) are a pair of notches cut into the pair of sides 21a, 21b, respectively. The top edge notches 18a, 18b are cut from the respective sides 21a, 21b and extend toward each other along the top edge ruled line 12a (first top edge ruled line). The top edge notch 18a extends linearly from the side 21a toward the hole 15a along the top edge ruled line 12a. The top edge notch 18b extends linearly from the side 21b toward the hole 15a along the top edge ruled line 12a. The lengths of the top edge notches 18a, 18b in the Y direction are, for example, the same as each other, but may be different from each other. The length in the Y direction of each of the top-side notches 18a, 18b is, for example, the same as the length in the Y direction of each of the hole notches 16a, 16b. Each of the top-side notches 18a, 18b may extend in a curved line shape, a wavy line shape, or the like.

[0056] The pair of top edge notches 19a, 19b (second top edge notches) are a pair of notches cut into the pair of sides 21a, 21b, respectively. The top edge notches 19a, 19b are cut from the respective sides 21a, 21b and extend toward each other along the top edge ruled line 12b (second top edge ruled line). The top edge notch 19a extends linearly from the side 21a toward the hole 15b along the top edge ruled line 12b. The top edge notch 19b extends linearly from the side 21b toward the hole 15b along the top edge ruled line 12b. The lengths of the top edge notches 19a, 19b in the Y direction are, for example, the same as each other, but may be different from each other. The length in the Y direction of each of the top-side notches 19a, 19b is, for example, the same as the length in the Y direction of each of the top-side notches 18a, 18b. Each of the top-side notches 19a, 19b may extend in a curved or wavy line shape, for example.

[0057] [Parts of the simple container sheet] The simple container sheet 2 is divided into a bottom portion R1 and a pair of side portions R2, R3 (a pair of regions). The bottom portion R1 is the portion of the simple container sheet 2 located between the pair of bottom ruled lines 11a, 11b. The bottom portion R1 is surrounded by the pair of bottom ruled lines 11a, 11b and the pair of sides 21a, 21b. The bottom portion R1 has a rectangular shape that is long in the Y direction, for example. In Figure 4, the bottom portion R1 is hatched.

[0058] The pair of side surface portions R2, R3 are portions of the simple container sheet 2 excluding the bottom surface portion R1. Each of the side surface portions R2, R3 is located outside the pair of bottom ruled lines 11a, 11b in the X direction, i.e., at a pair of positions sandwiching the bottom surface portion R1 in the X direction. The side surface portion R2 is the portion from the bottom ruled line 11a to the side 22a in the X direction. More specifically, the side surface portion R2 is the portion surrounded by the bottom ruled line 11a, the side 22a, the side 21a, and the side 21b. The side surface portion R3 is the portion from the bottom ruled line 11b to the side 22b in the X direction. More specifically, the side surface portion R3 is the portion surrounded by the bottom ruled line 11b, the side 22b, the side 21a, and the side 21b.

[0059] The side surface portion R2 is further divided into a side surface intermediate portion R2a and a side surface end portion R2b. The side surface intermediate portion R2a is the portion from the bottom ruled line 11a to the top ruled line 12a. More specifically, the side surface intermediate portion R2a is the portion surrounded by the bottom ruled line 11a, the top ruled line 12a, the side 21a, and the side 21b. The side surface intermediate portion R2a is adjacent to the bottom surface portion R1 via the bottom ruled line 11a.

[0060] The side surface end portion R2b is the portion from the top ruled line 12a to the side 22a. More specifically, the side surface end portion R2b is the portion surrounded by the top ruled line 12a, the side 22a, the side 21a, and the side 21b. The side surface end portion R2b is located on the opposite side from the bottom surface portion R1 across the side surface intermediate portion R2a. The side surface end portion R2b is adjacent to the side surface intermediate portion R2a via the top ruled line 12a.

[0061] The side surface portion R3 is further divided into a side surface intermediate portion R3a and a side surface end portion R3b. The side surface intermediate portion R3a is the portion from the bottom ruled line 11b to the top ruled line 12b. More specifically, the side surface intermediate portion R3a is the portion surrounded by the bottom ruled line 11b, the top ruled line 12b, the side 21a, and the side 21b. The side surface intermediate portion R3a is adjacent to the bottom surface portion R1 via the bottom ruled line 11b.

[0062] The side surface end portion R3b is the portion from the top ruled line 12b to the side 22b. More specifically, the side surface end portion R3b is the portion surrounded by the top ruled line 12b, the side 22b, the side 21a, and the side 21b. The side surface end portion R3b is located on the opposite side from the bottom surface portion R1 across the side surface intermediate portion R3a. The side surface end portion R3b is adjacent to the side surface intermediate portion R3a via the top ruled line 12b.

[0063] [Folding and unfolding of the sheet for simple containers] The simple container sheet 2 can be folded as shown in Figures 5 and 6. More specifically, the simple container sheet 2 in the unfolded state shown in Figure 4 is folded in a mountain fold along the pair of top edge lines 12a and 12b, in a valley fold along the pair of bottom edge lines 11a and 11b, and in a mountain fold along the folding line 13, to become the folded state shown in Figure 5.

[0064] In the folded state of the simple container sheet 2 shown in Fig. 5, the side edge R2b and the side middle portion R2a are folded back at the top edge crease 12a, and the side edge R3b and the side middle portion R3a are folded back at the top edge crease 12b. Furthermore, the side middle portion R2a and the bottom portion R1 are folded back at the bottom edge crease 11a, and the side middle portion R3a and the bottom portion R1 are folded back at the bottom edge crease 11b. Furthermore, the bottom portion R1 is folded back at the fold line 13. However, the fold line 13, the top edge crease 12a, and the top edge crease 12b are folded back in the opposite direction to the bottom edge crease 11a and the bottom edge crease 11b.

[0065] As a result, in the folded state of the simple container sheet 2 shown in Fig. 5, the bottom portion R1 is folded in half and sandwiched between the side intermediate portions R2a and R3a, so that the bottom portion R1, the side intermediate portions R2a and R3a, and the side end portions R2b and R3b are overlapped with each other. In this embodiment, as described above, the side 22a, the top-edge ruled line 12a, the bottom-edge ruled line 11a, the fold-edge ruled line 13, the bottom-edge ruled line 11b, the top-edge ruled line 12b, and the side 22b are aligned at equal intervals. In this case, the simple container sheet 2 can be easily folded using a machine such as a paper folding machine, thereby reducing the manufacturing cost for converting the simple container sheet 2 in the unfolded state shown in Fig. 4 into the folded state shown in Fig. 5.

[0066] The folded container sheet 2 shown in Fig. 5 is folded along the folding line 14 to become the folded state shown in Fig. 6. That is, in the folded container sheet 2 shown in Fig. 6, the folded container sheet 2 shown in Fig. 5 is folded back along the folding line 14, so that it is folded in half along the folding line 14.

[0067] When the folded simple container sheet 2 shown in Figure 5 or 6 is unfolded, it becomes the state shown in Figure 7. In the simple container sheet 2 in the state shown in Figure 7, the bottom surface R1, which was folded in half, is opened and becomes approximately flat, the middle side surfaces R2a and R3a rise at approximately right angles from the bottom surface R1, and the side surface ends R2b and R3b hang down from the middle side surfaces R2a and R3a, respectively. The simple container sheet 2 in the state shown in Figure 7 serves as a support 3 for the simple container 1.

[0068] The side intermediate portions R2a, R3a may be inclined and rise relative to the bottom portion R1. Each surface portion of the sheet 2 for simple containers is preferably flat, but does not necessarily have to be flat and may be bent or curved. The sheet 2 for simple containers shown in Figure 4 can also be put into the state shown in Figure 7 by folding the sheet 2 for simple containers shown in Figure 4 along each ruled line.

[0069] [How to make a simple container] Next, an example of a method for producing the simple container 1 will be described.

[0070] First, the simple container sheet 2 in the folded state shown in Fig. 5 or Fig. 6 is placed inside the bag 4. If the simple container sheet 2 placed in the bag 4 is in the folded state shown in Fig. 5, the simple container sheet 2 is folded inside the bag 4 to the state shown in Fig. 6. Then, the folded simple container sheet 2 is opened and the bag 4 is pushed open to create the support 3.

[0071] Next, as shown in Fig. 1, side edge portions R2b and R3b of support body 3 (sheet 2 for simple containers) are extended to the outside of bag 4 through opening 41 of bag 4 and placed over opening 41 of bag 4. Then, opening 41 of bag 4 is sandwiched between side edge portion R2b and side intermediate portion R2a, and between side edge portion R3b and side intermediate portion R3a. After that, portion 42a of bag 4 sandwiched between side edge portion R2b and side intermediate portion R2a is pulled out through hole 15a of support body 3, and portion 42b of bag 4 sandwiched between side edge portion R3b and side intermediate portion R3a is pulled out through hole 15b on the opposite side from hole 15a.

[0072] Here, in the support body 3 in which the side intermediate portions R2a, R3a are folded relative to the bottom portion R1 so as to form a U-shape, the side intermediate portions R2a, R3a will try to open by moving away from each other, or will try to close by moving towards each other. In response to this, by pulling out portions 42a, 42b of the bag 4 from each hole 15a, 15b, the size of opening 41 of the bag 4 (the two long sides of bag 4 that align with side intermediate portions R2a, R3a and the two short sides of bag 4 connecting these long sides) of the simple container sheet 2 is adjusted to fit the size of the rectangular opening portion of the simple container sheet 2 folded into a U-shape (i.e., the portion surrounded by the long and short sides of the simple container sheet 2), and the bag 4 is thereby aligned with the simple container sheet 2, thereby maintaining a self-standing state. Specifically, the weight of the bag 4 pulled out from the pair of holes 15a, 15b causes the middle portions R2a, R3a of the side of the sheet 2 for simple containers to tend to fall outward, but the friction generated when parts 42a, 42b of the pulled out bag 4 come into contact with the edges of the holes 15a, 15b prevents the middle portions R2a, R3a of the side of the sheet 2 for simple containers from falling outward, and the bag 4 remains upright along the sheet 2 for simple containers.

[0073] This completes the production of the simple container 1. As shown in FIGS. 1 to 3 and 7, in the simple container 1, the support 3 has the side intermediate portions R2a, R3a folded relative to the bottom portion R1 along the bottom creases 11a, 11b so that the bottom portion R1 and the side intermediate portions R2a, R3a form a U-shape. The bottom portion R1 and the side intermediate portions R2a, R3a are inside the bag 4. The side end portions R2b, R3b are folded relative to the side intermediate portions R2a, R3a along the top creases 12a, 12b and cover the opening 41 of the bag 4. Portions 42a, 42b of the bag 4 are pulled out through holes 15a, 15b formed on the top creases 12a, 12b.

[0074] As described above, each of the holes 15a, 15b can be said to hold the portions 42a, 42b of the bag 4 in the pulled-out state, and can also be said to be a holding portion capable of holding the portions 42a, 42b of the bag 4. Being able to hold the portions 42a, 42b of the bag 4 means that the positions of the portions 42a, 42b of the bag 4 can be maintained so that the portions 42a, 42b of the bag 4 do not shift relative to the support body 3 (simple container sheet 2).

[0075] As described above, in this embodiment, the simple container sheet 2 is placed inside the bag 4, and the simple container sheet 2 is folded along the pair of bottom ruled lines 11a, 11b so that the cross section is U-shaped. Then, portions 42a, 42b of the bag 4 are pulled out through the holes 15a, 15b of the simple container sheet 2. This prevents the middle portions R2a, R3a of the side surfaces of the simple container sheet 2 from opening and closing, making it easy to create a self-standing simple container 1. Furthermore, by pulling out the portions 42a, 42b of the bag 4 evenly through the holes 15a, 15b, the force acting on one middle portion R2a of the side surface and the force acting on the other middle portion R3a of the side surface when the bag 4 is pulled out can be made equal. As a result, the support 3 (simple container sheet 2) is prevented from tilting significantly to one side when the bag 4 is pulled out through the holes 15a, 15b, making it possible to create a simple container 1 that stands up stably.

[0076] As described above, according to this embodiment, even when a large bag 4 is used, by pulling out portions 42a, 42b of the bag 4 through holes 15a, 15b, the size of opening 41 of the bag 4 can be adjusted to match the size of the opening of the simple container sheet 2 folded into a U-shape, and the bag 4 can be easily and stably self-standing along the simple container sheet 2. Therefore, the simple container sheet 2 can be used with large bags 4 that hang over toilet bowls, making it highly versatile and allowing the use of emergency toilets stockpiled in various places and commercially available garbage bags. Furthermore, when holes 15a, 15b are formed in the pair of side portions R2, R3, as in the simple container sheet 2, portions 42a, 42b of the bag 4 can be pulled out more easily through holes 15a, 15b, making it easier to adjust the shape of the bag 4. Furthermore, by pulling out the portions 42a, 42b of the bag 4 from both sides of the sheet 2 for simple containers in this manner, the force acting on the sheet 2 for simple containers from the bag 4 can be evenly distributed, which prevents the free-standing sheet 2 for simple containers from falling significantly to one side when pulling out the portions 42a, 42b of the bag 4. Therefore, according to this embodiment, a sheet 2 for simple containers that can stand on its own stably can be realized.

[0077] Furthermore, once the simple container 1 has been used, the bag 4 can be closed to seal the contents of the simple container 1 in the bag 4. Therefore, even if the contents of the simple container 1 are, for example, strong-smelling materials such as excrement, it is possible to reduce the leakage of odors. If the simple container 1 is a simple toilet, adding a coagulant and a deodorizer before or after use can solidify moisture such as urine and further reduce the leakage of odors. Furthermore, the simple container 1 can be made with at least the simple container sheet 2 and the bag 4. The simple container sheet 2 can be folded and does not take up much space when folded. Therefore, the simple container sheet 2 is extremely portable.

[0078] As in this embodiment, the simple container sheet 2 is formed in a rectangular shape, and the pair of bottom ruled lines 11a, 11b may be formed parallel to the pair of sides 22a, 22b of the simple container sheet 2. In this case, the simple container 1 after assembly can be formed in a substantially rectangular box shape, thereby improving the usability of the simple container 1.

[0079] As in this embodiment, the simple container sheet 2 may be folded back at the folding line 13 located between the pair of bottom lines 11a, 11b in the opposite direction to the pair of bottom lines 11a, 11b. In this case, the simple container sheet 2 can be folded in an accordion-like manner, allowing the simple container sheet 2 to be folded more compactly. This further improves the portability of the simple container sheet 2.

[0080] As in this embodiment, the holes 15a, 15b may be formed in positions symmetrical with respect to the center CP of the simple container sheet 2. In this case, when assembling the simple container 1, it is easy to grasp the positions of the holes 15a, 15b formed in the simple container sheet 2, and the work of pulling out the portions 42a, 42b of the bag 4 from the holes 15a, 15b can be easily performed. Therefore, with the above configuration, the ease of assembling the simple container 1 is further improved.

[0081] As in this embodiment, the holes 15a, 15b may be formed at positions that intersect with the center line YC of the simple container sheet 2. In this case, when assembling the simple container 1, it is easier to grasp the positions of the holes 15a, 15b formed in the simple container sheet 2, making it easier to pull out the portions 42a, 42b of the bag 4 from the holes 15a, 15b. Therefore, with the above configuration, the ease of assembling the simple container 1 is further improved.

[0082] As in this embodiment, the simple container sheet 2 may be folded back at the pair of top edge lines 12a, 12b in the opposite direction to the pair of bottom edge lines 11a, 11b. In this case, the side edge portions R2b, R3b folded back at the pair of top edge lines 12a, 12b can cover the opening 41 of the bag 4. This allows the opening 41 of the bag 4 to be kept appropriately open to match the size of the simple container 1, improving the usability of the simple container 1. Furthermore, the above configuration can alleviate discomfort caused by the feet touching the opening 41 of the bag 4 when using the simple container 1 as a simple toilet, for example.

[0083] As in the present embodiment, the top ruled line 12a may have a pair of top notches 18a, 18b cut from the pair of sides 21a, 21b, respectively, and extending toward each other along the top ruled line 12a, and the top ruled line 12b may have a pair of top notches 19a, 19b cut from the pair of sides 21a, 21b, respectively, and extending toward each other along the top ruled line 12b. In this case, the opening 41 of the bag 4 is sandwiched between the pair of top notches 18a, 18b and the pair of top notches 19a, 19b, which more reliably keeps the opening 41 of the bag 4 appropriately open to match the size of the simple container 1, thereby further improving the usability of the simple container 1.

[0084] As in this embodiment, holes 15a, 15b may be formed at positions that intersect with top ruled lines 12a, 12b. In this case, the positions of holes 15a, 15b are easily identified, facilitating the task of pulling out portions 42a, 42b of bag 4 through holes 15a, 15b. Therefore, the above configuration further improves the ease of assembly of simple container 1.

[0085] As in the present embodiment, hole 15a may have hole cutouts 16a and 16b extending away from each other along top ruled line 12a from hole 15a, and hole 15b may have hole cutouts 17a and 17b extending away from each other along top ruled line 12b from hole 15b. In this case, the task of pulling out portions 42a and 42b of bag 4 from holes 15a and 15b becomes even easier, further improving the ease of assembling simple container 1.

[0086] As in this embodiment, each of the holes 15a, 15b extends in the Y direction, and the width Wy of each of the holes 15a, 15b along the Y direction may be smaller than half the distance between a pair of sides 21a, 21b along the Y direction (distance d4a or d4b). By having each of the holes 15a, 15b extend in the Y direction in this manner, it becomes easier to grasp the position of each of the holes 15a, 15b and to pull out the portions 42a, 42b of the bag 4 from each of the holes 15a, 15b. Furthermore, by making the width Wy of each of the holes 15a, 15b smaller than half the distance between the pair of sides 21a, 21b, it is possible to avoid a decrease in the mechanical strength of the simplified container sheet 2 due to each of the holes 15a, 15b being excessively large.

[0087] [Second embodiment] Next, a simple container 1A of a second embodiment will be described. As shown in Fig. 8, the simple container 1A includes a sheet 2A for a simple container in which a pair of holes 25a, 25b (a pair of withdrawal openings) are formed. In the second embodiment, explanations that overlap with the first embodiment will be omitted as appropriate, and the description will focus on differences from the first embodiment.

[0088] As shown in Figures 9 and 10, the pair of holes 25a, 25b have the same shape (i.e., elliptical) as the pair of holes 15a, 15b described above, but are formed in different positions from the pair of holes 15a, 15b. The pair of holes 25a, 25b are formed outside the pair of upper edge ruled lines 12a, 12b. That is, the pair of holes 25a, 25b are formed only in the side edge portions R2b, R3b of the side surface portions R2, R3 of the simple container sheet 2A. The hole 25a is formed in the side edge portion R2b of the side surface portion R2, and the hole 25b is formed in the side edge portion R3b of the side surface portion R3. The pair of holes 25a, 25b are positioned at the side edge portions R2b, R3b, offset from the center line YC of the simple container sheet 2A, and are arranged in positions point-symmetrical with respect to the center CP of the simple container sheet 2A.

[0089] As a result, hole 25a is located in one side of center line YC at side edge R2b, and hole 25b is located in the other side of center line YC at side edge R3b. That is, the distance in the X direction between the center of hole 25a and center line XC is the same as the distance in the X direction between the center of hole 25b and center line XC, and the distance in the Y direction between the center of hole 25a and center line YC is the same as the distance in the Y direction between the center of hole 25b and center line YC. The distance in the X direction between the center of each hole 25a and center line YC from each top ruled line 12a and 12b is, for example, 5 mm or more. The distance in the Y direction between the center of each hole 25a and 25b and center line YC is, for example, 5 mm or more.

[0090] As shown in Figure 8, when assembling a sheet 2A for a simple container, the sheet 2A for a simple container is folded along a pair of bottom creases 11a, 11b so as to have a U-shaped cross section and placed inside a bag 4. Then, the side edge portions R2b, R3b of the sheet 2A for a simple container are extended to the outside of the bag 4 through the opening 41 of the bag 4 and placed over the opening 41 of the bag 4. The opening 41 of the bag 4 is then sandwiched between the side edge portion R2b and the side intermediate portion R2a, and between the side edge portion R3b and the side intermediate portion R3a. After that, a portion 42a of the bag 4 sandwiched between the side edge portion R2b and the side intermediate portion R2a is pulled out through the hole 25a in the support 3, and a portion 42b of the bag 4 sandwiched between the side edge portion R3b and the side intermediate portion R3a is pulled out through the hole 25b on the opposite side from the hole 25a. As a result, using the same principle as the simple container 1 described above, the shape of the bag 4 is stabilized when parts 42a and 42b of the bag 4 are pulled out from the pair of holes 25a and 25b, respectively, making it easy to assemble a self-standing simple container 1A.

[0091] Furthermore, when a pair of holes 25a, 25b are formed at a position offset from the pair of top ruled lines 12a, 12b, as in the case of simple container sheet 2A, simple container sheet 2A can be easily folded using a machine such as a paper folding machine. Note that in a type in which simple container sheet 2A supports bag 4 from the outside like this, there is an advantage in that the size of the long side of simple container sheet 2A can be clearly recognized by wrapping opening 41 of bag 4 over the upper ends of side portions R2, R3 of simple container sheet 2A folded at the pair of bottom ruled lines 11a, 11b.

[0092] [Third embodiment] Next, a simple container 1B of a third embodiment will be described. As shown in Fig. 11, the simple container 1B includes a sheet 2B for a simple container that does not have a hole, a notch, or other opening. In the third embodiment, explanations that overlap with the first embodiment will be omitted as appropriate, and the description will focus on differences from the first embodiment.

[0093] As shown in FIGS. 12 and 13, the simple container sheet 2B does not have portions corresponding to the side edge portions R2b, R3b of the simple container sheet 2 described above. In this case, the top edge lines 12a, 12b are not formed in the simple container sheet 2B, and the side edge portions R2, R3 extend flatly from the pair of bottom edge lines 11a, 11b to the pair of sides 22a, 22b without being folded back. The width of each side edge portion R2, R3 along the X direction is, for example, half the width of the bottom edge portion R1 along the X direction. The width of each side edge portion R2, R3 along the X direction corresponds to the width of each side edge intermediate portion R2a, R3a of the simple container sheet 2 described above (i.e., the above-mentioned distances d2a, d2b). It is preferable to use a resin sheet rather than paper as the simple container sheet 2B, from the viewpoint of making it easier for the side edge portions R2, R3 to rise from the bottom edge portion R1. Alternatively, the simple container sheet 2B may be made of thick paper such as coated cardboard. In this case, the coated cardboard may be treated to be water-resistant.

[0094] The sheet 2B for a simple container does not have a structure corresponding to the pair of holes 15a, 15b of the sheet 2 for a simple container described above. In this case, as shown in Figure 11, when assembling the sheet 2B for a simple container, a bag 4 is placed inside the sheet 2B for a simple container that has been folded along the pair of bottom ruled lines 11a, 11b so as to form a U-shaped cross section. In this state, the opening 41 of the bag 4 covers the upper ends of the side portions R2, R3 of the sheet 2B for a simple container, stabilizing the shape of the bag 4. This allows for a free-standing container 1B to be obtained.

[0095] Furthermore, when a bag 4 is placed inside the simplified container sheet 2B folded to form a U-shaped cross section, unlike the simplified container 1 described above, where the simplified container sheet 2 is placed inside the bag 4, the contents of the simplified container 1B can be disposed of in a sealed state in the bag 4 without soiling the simplified container sheet 2B. In this case, the simplified container sheet 2B can be reused, thereby conserving resources compared to discarding the simplified container sheet 2B after each use of the simplified container 1B. The simplified container sheet 2B may have a pair of cutouts formed in each of the pair of side portions R2, R3. In this case, the cutouts may be formed from the pair of edges 22a, 22b and extend in the X direction toward the pair of bottom ruled lines 11a, 11b, approaching each other.

[0096] [Fourth embodiment] Next, a simple container 1C of a fourth embodiment will be described. As shown in Fig. 14, the simple container 1C includes a simple container sheet 2C having a pair of holes 45a, 45b (a pair of outlets) formed therein. In the fourth embodiment, explanations that overlap with the first embodiment will be omitted as appropriate, and the description will focus on differences from the first embodiment.

[0097] 15 and 16, the simple container sheet 2C does not have portions corresponding to the side edge portions R2b, R3b of the simple container sheet 2 described above. In this case, the simple container sheet 2C does not have the top edge ruled lines 12a, 12b, and the side edge portions R2, R3 extend flatly from the pair of bottom edge ruled lines 11a, 11b to the pair of sides 22a, 22b without being folded back. The material of the simple container sheet 2C is, for example, the same as the material of the simple container sheet 2B.

[0098] As shown in Fig. 16, the pair of holes 45a, 45b are a pair of through holes formed in the planar side surface portions R2, R3, respectively. Each of the pair of holes 45a, 45b has, for example, the same shape (i.e., an elliptical shape) as the above-described hole portions 15a, 15b. The pair of holes 45a, 45b are, for example, arranged outside the pair of bottom ruled lines 11a, 11b, in positions that are line-symmetrical with respect to the center line XC of the simple container sheet 2C. The pair of holes 45a, 45b are, for example, formed at a position that intersects with the center line YC of the simple container sheet 2C.

[0099] The pair of holes 45a, 45b are positioned closer to the pair of sides 21a, 21b than the pair of bottom ruled lines 11a, 11b. That is, the hole 45a is positioned closer to the side 22a than the bottom ruled line 11a on the side surface R2, and the hole 45b is positioned closer to the side 22b than the bottom ruled line 11b on the side surface R3. Therefore, the distance in the X direction from the side 22a to the center of the hole 45a is shorter than the distance in the X direction from the bottom ruled line 11a to the center of the hole 45a, and the distance in the X direction from the side 22b to the center of the hole 45b is shorter than the distance in the X direction from the bottom ruled line 11b to the center of the hole 45b.

[0100] 14, when assembling a simple container sheet 2C, a bag 4 is placed inside the simple container sheet 2C that has been folded along a pair of bottom ruled lines 11a, 11b so as to form a U-shaped cross section. In this state, a portion 42a of the bag 4 inside the simple container sheet 2C is pulled out through hole 45a, and a portion 42b of the bag 4 on the opposite side to portion 42a is pulled out through hole 45b. As a result, using the same principle as in the simple container 1 described above, the shape of the bag 4 is stabilized with portions 42a, 42b of the bag 4 pulled out through the pair of holes 45a, 45b, respectively, and a self-standing simple container 1C can be easily assembled.

[0101] Furthermore, by forming the holes 45a, 45b closer to the sides 22a, 22b than the bottom ruled lines 11a, 11b, the positions of the holes 45a, 45b are easy to grasp, and the work of pulling out the portions 42a, 42b of the bag 4 from the holes 45a, 45b can be easily performed. Therefore, the simple container sheet 2C improves the assembling of the simple container 1C. Furthermore, when the bag 4 is placed inside the simple container sheet 2C folded so as to have a U-shaped cross section, the simple container sheet 2C can be used repeatedly, thereby saving resources.

[0102] [Fifth embodiment] Next, a simple container 1D of a fifth embodiment will be described. As shown in Fig. 17, the simple container 1D includes a simple container sheet 2D in which a pair of holes 55a, 55b (a pair of withdrawal openings) are formed. In the fifth embodiment, explanations that overlap with the first embodiment will be omitted as appropriate, and the following description will focus on differences from the first embodiment.

[0103] 18 and 19, the simple container sheet 2D does not have portions corresponding to the side edge portions R2b, R3b of the simple container sheet 2 described above. In this case, the pair of top edge lines 12a, 12b are not formed in the simple container sheet 2D, and the side edge portions R2, R3 extend flatly from the pair of bottom edge lines 11a, 11b to the pair of sides 22a, 22b without being folded back. The material of the simple container sheet 2D is, for example, the same as the material of the simple container sheet 2B.

[0104] As shown in Fig. 19, the simple container sheet 2D has a pair of protrusions 23a, 23b that protrude outward from a pair of sides 22a, 22b, respectively. The protrusion 23a protrudes from the side 22a on the opposite side of the side surface R2 in the X direction, and the protrusion 23b protrudes from the side 22b on the opposite side of the side surface R3 in the X direction. The pair of protrusions 23a, 23b are, for example, arranged in positions that are line-symmetrical with respect to the center line XC of the simple container sheet 2D. The pair of protrusions 23a, 23b are also arranged on the center line YC of the simple container sheet 2D. The pair of protrusions 23a, 23b are formed symmetrical with respect to the center line YC in the Y direction.

[0105] The protrusion amount of each of the protrusions 23a, 23b, i.e., the width in the X direction of each of the protrusions 23a, 23b, is smaller than the width in the Y direction of each of the side surface portions R2, R3. Each of the protrusions 23a, 23b has, for example, a substantially rectangular shape extending along the Y direction. Therefore, the width in the Y direction of each of the protrusions 23a, 23b is longer than the width in the X direction of each of the protrusions 23a, 23b. The width in the Y direction of each of the protrusions 23a, 23b is shorter than the width in the Y direction of the simple container sheet 2D, i.e., the distance in the X direction between the sides 21a and 21b.

[0106] A pair of protrusion creases 22c, 22d for folding the pair of protrusions 23a, 23b are formed in the simple container sheet 2D. The protrusion crease 22c is formed on an extension of the side 22a, and the protrusion crease 22d is formed on an extension of the side 22b. When the simple container sheet 2D is in use, the pair of protrusions 23a, 23b are folded at an angle of 90 degrees or more along the pair of protrusion creases 22c, 22d relative to the side surface portions R2, R3.

[0107] The pair of holes 55a, 55b are a pair of through holes formed in the pair of protrusions 23a, 23b, respectively. Each of the pair of holes 55a, 55b has, for example, the same shape (i.e., an elliptical shape) as the above-mentioned hole 15a, 15b. The pair of holes 55a, 55b are, for example, arranged at positions that are line-symmetrical with respect to the center line XC of the simple container sheet 2C. The pair of holes 55a, 55b are, for example, formed at a position that intersects with the center line YC of the simple container sheet 2C.

[0108] 17, when assembling a simple container sheet 2D, a bag 4 is placed inside the simple container sheet 2D that has been folded along a pair of bottom creases 11a, 11b so as to form a U-shaped cross section. In this state, a portion 42a of the bag 4 inside the simple container sheet 2D is pulled from top to bottom through a hole 55a in a protrusion 23a that has been folded along a protrusion crease 22c, and a portion 42b of the bag 4 on the opposite side to the portion 42a is pulled from top to bottom through a hole 55b in a protrusion 23b that has been folded along a protrusion crease 22d. As a result, using the same principle as in the simple container 1 described above, the shape of the bag 4 is stabilized with portions 42a, 42b of the bag 4 pulled out from the pair of holes 55a, 55b, respectively, and the self-standing simple container 1D can be easily assembled.

[0109] Furthermore, by forming holes 55a, 55b in the protrusions 23a, 23b protruding from the sides 22a, 22b, the position of the holes 55a, 55b can be easily grasped, facilitating the operation of pulling out the portions 42a, 42b of the bag 4 through the holes 55a, 55b. Therefore, the container sheet 2D improves the ease of assembly of the container 1D. Furthermore, when a bag 4 is placed inside the container sheet 2D folded to have a U-shaped cross section, the container sheet 2D can be reused, thereby saving resources. Furthermore, with the container sheet 2D, the protrusions 23a, 23b are folded mountain-folded along the ruled lines 22c, 22d, so that the protrusions 23a, 23b can be covered by the bag 4, thereby preventing the container sheet 2D from becoming soiled when the container 1D is in use.

[0110] [Sixth embodiment] Next, a simple container 1E of a sixth embodiment will be described. As shown in Fig. 20, the simple container 1E includes a sheet 2E for a simple container on which a pair of cutouts 65, 66 (a pair of withdrawal openings) are formed. In the sixth embodiment, explanations that overlap with the first embodiment will be omitted as appropriate, and the description will focus on differences from the first embodiment.

[0111] 21 and 22, the simple container sheet 2E does not have portions corresponding to the side edge portions R2b, R3b of the simple container sheet 2 described above. In this case, the simple container sheet 2E does not have the top edge ruled lines 12a, 12b, and the side edge portions R2, R3 extend flatly from the pair of bottom edge ruled lines 11a, 11b to the pair of sides 22a, 22b without being folded back. The material of the simple container sheet 2E is, for example, the same as the material of the simple container sheet 2B.

[0112] The pair of cutouts 65, 66 are positioned outside the pair of bottom creases 11a, 11b, symmetrically about the center line XC of the simple container sheet 2E. The cutout 65 is formed in the side surface R2 adjacent to the bottom surface R1, and the cutout 66 is formed in the side surface R3 adjacent to the bottom surface R1 on the opposite side of the side surface R2. The cutout 65 is formed in the side surface R2 closer to the edge 22a than the bottom crease 11a, and the cutout 66 is formed in the side surface R3 closer to the edge 22b than the bottom crease 11b. In other words, the distance in the X direction between the cutout 65 and the edge 22a is shorter than the distance in the X direction between the cutout 65 and the bottom crease 11a, and the distance in the X direction between the cutout 66 and the edge 22b is shorter than the distance in the X direction between the cutout 66 and the bottom crease 11b.

[0113] The cut portion 65 includes a first cut line 65a and a second cut line 65b facing each other. The first cut line 65a and the second cut line 65b have a size (width and length) that allows portions 42a and 42b of the bag 4 to be pulled out, respectively. The first cut line 65a and the second cut line 65b extend linearly, for example, along the Y direction, and are aligned parallel to each other at a distance along the X direction. The first cut line 65a and the second cut line 65b are aligned in order from the side 22a side along the X direction between the side 22a and the bottom ruled line 11a. The first cut line 65a and the second cut line 65b are formed, for example, at a position that intersects with the center line YC of the simple container sheet 2E, and are formed symmetrically in the Y direction with respect to the center line YC.

[0114] The first incision line 65a and the second incision line 65b extend linearly along the Y direction, for example, between sides 21a and 21b, perpendicular to the center line YC. The first incision line 65a and the second incision line 65b extend along the Y direction from the center line YC to a position short of sides 21a and 21b, respectively, and the Y-direction length of each of the first incision line 65a and the second incision line 65b is shorter than the length of the simplified container sheet 2E along the Y direction, i.e., the Y-direction distance from side 21a to side 21b. The formation of the first incision line 65a and the second incision line 65b forms a strip-shaped portion P65 between the first incision line 65a and the second incision line 65b. The strip-shaped portion P65 has a constant width in the X direction and is rectangular in shape extending along the Y direction.

[0115] The cut portion 66 includes a first cut line 66a and a second cut line 66b facing each other. The first cut line 66a and the second cut line 66b have a size (width and length) that allows portions 42a and 42b of the bag 4 to be pulled out, respectively. The first cut line 66a and the second cut line 66b extend linearly, for example, along the Y direction, and are aligned parallel to each other at a distance along the X direction. The first cut line 66a and the second cut line 66b are aligned in order from the side 22b side along the X direction between the side 22b and the bottom ruled line 11b. The first cut line 66a and the second cut line 66b are formed, for example, at a position that intersects with the center line YC of the simple container sheet 2E, and are formed symmetrically in the Y direction with respect to the center line YC.

[0116] The first incision line 66a and the second incision line 66b extend linearly along the Y direction, for example, between sides 21a and 21b, perpendicular to the center line YC. The first incision line 66a and the second incision line 66b extend along the Y direction from the center line YC to a position short of sides 21a and 21b, respectively, and the Y-direction length of each of the first incision line 66a and the second incision line 66b is shorter than the length of the simplified container sheet 2E along the Y direction, i.e., the Y-direction distance from side 21a to side 21b. The formation of the first incision line 66a and the second incision line 66b forms a strip-shaped portion P66 between the first incision line 66a and the second incision line 66b. The strip-shaped portion P66 has a constant width in the X direction and is rectangular in shape extending along the Y direction.

[0117] 20, when assembling a simple container sheet 2E, a bag 4 is placed inside the simple container sheet 2E that has been folded along a pair of bottom creases 11a, 11b so as to form a U-shaped cross section. In this state, a portion 42a of the bag 4 inside the simple container sheet 2E is pulled out through the first incision line 65a and the second cut line 65b so as to be sandwiched between the band-shaped portion P65, and a portion 42b of the bag 4 on the opposite side of the portion 42a is pulled out through the first incision line 66a and the second cut line 66b so as to be sandwiched between the band-shaped portion P66, using the same principle as in the simple container 1 described above. This stabilizes the shape of the bag 4 with the portions 42a, 42b of the bag 4 pulled out through the pair of cut lines 65, 66, respectively, and allows the self-standing simple container 1E to be easily assembled.

[0118] Furthermore, by forming the cutouts 65, 66 closer to the sides 22a, 22b than the bottom ruled lines 11a, 11b, the positions of the cutouts 65, 66 are easy to grasp, facilitating the task of pulling out the portions 42a, 42b of the bag 4 through the cutouts 65, 66. Therefore, the simple container sheet 2E improves the ease of assembling the simple container 1E. Furthermore, when a bag 4 is placed inside the simple container sheet 2E folded so as to have a U-shaped cross section, the simple container sheet 2E can be reused, thereby saving resources. The simple container sheet 2E may have structures corresponding to the side edge portions R2b, R3b of the simple container sheet 2 described above, or the cutouts 65, 66 may be formed in structures corresponding to the side edge portions R2b, R3b. In this case, when assembling the sheet 2E for a simple container, the bag 4 may be placed inside the sheet 2E for a simple container that has been folded so that the cross section has a U-shape, similar to the sheet 2 for a simple container described above.

[0119] Although the embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and various modifications are possible within the scope of the claims. For example, the above-described embodiments and modifications may be combined with each other within a consistent range, depending on the required purpose and effect.

[0120] The shape of the sheet for simple containers does not necessarily have to be rectangular, and can be various shapes. For example, the sheet for simple containers may have a shape in which a pair of opposing sides are curved, or may have other shapes such as a trapezoid. Some of the ruled lines may be omitted from the sheet for simple containers, or other ruled lines may be formed. For example, the folding ruled lines of the sheet for simple containers may be omitted, or two or more ruled lines may be formed. The positions and sizes of the pair of holes or pair of cut portions formed in the sheet for simple containers can be changed as appropriate. For example, each cut portion may have a pair of holes formed on both ends of the cutting line to prevent the sheet for simple containers from tearing. [Explanation of symbols]

[0121] 1, 1A, 1B, 1C, 1D, 1E... Simple container, 2, 2A, 2B, 2C, 2D, 2E... Simple container sheet, 3... Support, 4... Bag, 11a, 11b... Bottom line, 12a... Top line (first top line), 12b... Top line (second top line), 13... Folding line, 15a... Hole (first hole), 25a, 25b, 45a, 45b, 55a, 55b... Hole, 15b... Hole (second hole), 16a, 16b... Hole cutout (first hole cutout) ), 17a, 17b...hole cutouts (first hole cutouts), 18a, 18b...top edge cutouts (first top edge cutouts), 19a, 19b...top edge cutouts (second top edge cutouts), 21a, 21b, 22a, 22b...edges, 23a, 23b...convex portions, 65, 66...cutouts, 41...opening, CP...center, d1a, d1b, d2a, d2b, d3a, d3b, d4a, d4b...distance, R2, R3...side portions (areas), Wx, Wy...width, XC, YC...center lines.

Claims

1. A sheet for a simple container used as a simple container together with a bag having an opening, A pair of bottom ruled lines spaced apart from each other are formed, a pair of withdrawal openings through which a portion of the bag can be withdrawn are formed in a pair of regions outside the pair of bottom creases in a direction intersecting the pair of bottom creases; Sheet for simple containers.

2. The simple container sheet is formed into a rectangular shape, The pair of bottom ruled lines are formed parallel to a pair of sides of the simple container sheet that face each other in the intersecting direction. The sheet for simple containers according to claim 1.

3. The pair of bottom creases are folded back, a folding line located between the pair of bottom lines, which is folded back in the opposite direction to the pair of bottom lines; The sheet for simple containers according to claim 1.

4. The pair of pull-out openings are a pair of holes that penetrate the simple container sheet or a pair of notches that are cut into the simple container sheet. The sheet for simple containers according to claim 1.

5. the center of the simple container sheet is located at the center between the pair of bottom ruled lines in the cross direction, The pair of outlet portions are formed at positions symmetrical with respect to the center of the simple container sheet. The sheet for simple containers according to claim 4.

6. The pair of pull-out openings are formed at positions that pass through the center of the simple container sheet and intersect with a center line that extends along the intersecting direction. The sheet for simple containers according to claim 5.

7. The pair of bottom creases are folded back, In the pair of regions outside the pair of bottom ruled lines in the crossing direction, the pair of top ruled lines extending in the extending direction of the pair of bottom ruled lines are folded back in the opposite direction to the pair of bottom ruled lines. The sheet for simple containers according to claim 4.

8. the pair of top-edge creases intersect with a pair of edges of the simple container sheet that are opposite to the extending direction of the pair of bottom-edge creases, a first upper-edge ruled line of the pair of upper-edge ruled lines has a pair of first upper-edge cutout portions that are respectively cut from the pair of sides and extend in directions approaching each other along the first upper-edge ruled line; a second upper edge ruled line of the pair of upper edge ruled lines has a pair of second upper edge notches formed therein, the second upper edge notches being cut from the pair of sides and extending in directions approaching each other along the second upper edge ruled line; The sheet for simple containers according to claim 7.

9. The pair of withdrawal openings are the pair of holes formed at positions intersecting the pair of upper edge ruled lines, respectively. The sheet for simple containers according to claim 7.

10. The pair of holes are a first hole formed at a position intersecting a first upper edge ruled line of the pair of upper edge ruled lines; a second hole formed at a position intersecting a second upper edge ruled line of the pair of upper edge ruled lines; Including, a first hole notch is formed in the first hole portion, the first hole notch extending in a direction away from the first hole portion along the first upper edge ruled line; The second hole portion has a second hole notch portion formed therein, the second hole notch portion extending in a direction away from the second hole portion along the second upper edge ruled line. The sheet for simple containers according to claim 9.

11. Each of the pair of holes extends in the extension direction, a width of each of the pair of holes along the extension direction is smaller than half the distance between the pair of sides along the extension direction; The sheet for simple containers according to claim 9.

12. The pair of pull-out openings are a pair of holes formed in an area outside the pair of upper edge ruled lines and offset from a center line that passes through the center of the simple container sheet and extends along the cross direction. The sheet for simple containers according to claim 7.

13. the sheet extends in a plane from the pair of bottom creases to a pair of sides of the sheet that are opposite to each other in the cross direction and are outside the pair of bottom creases, without being folded back; The pair of withdrawal openings are a pair of holes formed at positions closer to the pair of sides than the pair of bottom ruled lines. The sheet for simple containers according to claim 4.

14. the sheet extends in a plane from the pair of bottom creases to a pair of sides of the sheet that are opposite to each other in the cross direction and are outside the pair of bottom creases, without being folded back; A pair of protrusions protruding outward from the pair of sides are formed on the pair of sides, The pair of outlet portions are a pair of holes formed in the pair of protrusions, respectively. The sheet for simple containers according to claim 4.

15. A support made of the simple container sheet according to any one of claims 1 to 14, the bag having the opening, the support is placed inside or outside the bag in a state where it is folded along the pair of bottom creases, A portion of the bag is pulled out from the pair of pull-out openings. Simple container.

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