Sheet for object holding frame of and container with holding frame

Abstract

This sheet (10) for a container holding frame is divided into outer frame parts (11), leg parts (12), and bottom parts (13) by a plurality of cut lines. The leg parts (12) each extend along the inner circumference of the outer frame parts (11), and ends in the longitudinal direction are coupled to the outer frame parts (11) and the other ends are coupled to the bottom parts (13). The inner circumference of each outer frame part (11) is rectangular. When the length of the short side of each outer frame part (11) is A, the length of each leg part along the short side is a, the length of the long side of each outer frame part (11) is B, and the length of each leg part along the long side is b, the length b is determined by the formula b2 = a2 - 1 / 4(A2 – B2).

Description

Sheet for holding frame of stored items and container with holding frame

[0001] The present invention relates to a sheet for a storage object holding frame that transforms into a holding frame, and a container with a holding frame using the same.

[0002] Containers made by press-molding film or paper (so-called side dish cups) for storing prepared foods and side dishes are known, and paper-based retaining frames for holding these types of containers are also known, as shown in Patent Document 1. In recent years, with the growing awareness of environmental issues such as reducing plastic use, the adoption of paper-based retaining frames like those in Patent Document 1 as an alternative to plastic packaging is being considered.

[0003] Here, the container holding frame of Patent Document 1 is created by deforming a single container holding frame sheet with cut lines. The container holding frame sheet is divided by multiple cut lines into an outer frame portion, a leg portion surrounded by the outer frame portion, and a bottom portion surrounded by the leg portion. Each of the leg portions extends along the outer circumference of the bottom portion, and one end in the longitudinal direction of the leg portion is connected to the outer frame portion, while the other end in the longitudinal direction of the leg portion is connected to the bottom portion.

[0004] Then, when the bottom of the horizontally supported sheet is pushed below the outer frame, each of the legs bends downward at the boundary with the outer frame, causing the sheet to deform three-dimensionally so that multiple legs rise from the bottom towards the outer frame, which is higher than the bottom. The container is held in the storage space formed between the bottom and the legs. The container containing the food is then packaged in a packaging bag or the like, while still in the container with the holding frame, and put up for sale.

[0005] Patent No. 4988387

[0006] Incidentally, conventional container holding frame sheets are primarily designed to hold containers with a circular bottom (round side dish cups) in storage spaces, but designs that allow for more stable holding within the storage space have not been disclosed. In particular, there have been no attempts to hold containers with a long and short side, such as oval or rectangular side dish cups, in storage spaces. Containers with a long and short side, such as oval side dish cups, are also commonly used, and if these containers could also be properly held in container holding frames, it would expand environmental considerations such as reducing plastic use and improve convenience.

[0007] However, when designing a sheet for a container holding frame for oval-shaped or similar side dish cups, simply making the inner circumference and bottom of the outer frame rectangular is not sufficient for a proper design. In other words, the legs of the container holding frame sheet are formed along the long and short sides of the rectangular inner circumference of the outer frame, respectively. First, the length of the legs along the long sides is constrained to be less than or equal to the length of the long side, and the length of the legs along the short sides is constrained to be less than or equal to the length of the short side.

[0008] In this case, for example, if the length of each leg is set to the maximum possible while leaving a connection point with the bottom, a large difference in length will occur between the legs along the long side and the legs along the short side. This results in a large difference in the vertical length (height) of the storage space that can be formed by the legs on the long side and the vertical length (height) of the storage space that can be formed by the legs on the short side after assembly to the container holding frame, causing an imbalance. As a result, when assembling to the container holding frame, the gap between the legs extending to the long side of the outer frame and the outer frame and bottom (i.e., the vertical length (height) of the storage space) becomes large, and there is a problem that the container in the storage space on the long side may detach or shift significantly, reducing the container holding performance (holding ability). On the other hand, if the length of the legs on the long side is matched to the length of the legs on the short side, the height of the storage space formed on the long side will be smaller than the height of the container. Therefore, the container itself may become impossible to store, or even if it can be stored, the container may deform unintentionally, or the longer side of the outer frame may deform significantly downwards towards the corner. This can cause the outer frame and bottom to become distorted, resulting in the entire structure twisting. Furthermore, if the twisting is severe, the container may shift or move.

[0009] Therefore, the problem to be solved by the present invention is to design a retaining frame sheet for storing containers such as cups as the object to be stored, so that the containers can be held more stably in the storage space. In particular, for a retaining frame sheet that can be assembled into a retaining frame for holding containers that have a long side and a short side, such as oval-shaped side dish cups, the aim is to prevent the entire sheet from twisting when assembled into a retaining frame, or for the containers, which are the objects to be stored, to shift or detach in the storage space, by adjusting the relationship of the lengths of the legs, etc.

[0010] To solve the above-mentioned problems, the sheet for holding an object to be stored according to the invention consists of a single sheet body with a plurality of cut lines or easy-break lines, and is divided by the plurality of cut lines or easy-break lines into a bottom portion, a leg portion surrounding the bottom portion, and an outer frame portion surrounding the leg portion, and each of the leg portions extends along the inner circumference of the outer frame portion, and one end in the longitudinal direction of the leg portion is connected to the outer frame portion and the other end in the longitudinal direction of the leg portion is connected to the bottom portion, and the sheet body When the bottom portion is pushed below the outer frame portion, each of the legs bends downward at the boundary with the outer frame portion, thereby forming a storage space between the bottom portion and the legs capable of holding an object to be stored, wherein the inner circumference of the outer frame portion is rectangular, with the length of one side being A and the length of the other side perpendicular to the first side being B, and the length of the leg portion along one side of the inner circumference of the outer frame portion being a and the length of the leg portion along the other side being b, then the length of b is b ２ = a ２ -1 / 4 (A ２ ―B ２ The configuration was determined by the relationship between ).

[0011] With this configuration, when the frame deforms into a storage frame, the connection point between the bottom and the legs is located directly below the midpoint of either one side or the other side of the inner circumference of the outer frame, thus providing the most stable hold on the stored object, such as a container, within the storage space.

[0012] The sheet for holding an object to be stored according to the invention consists of a single sheet body with a plurality of cut lines or easy-break lines, and is divided by the plurality of cut lines or easy-break lines into a bottom portion, a leg portion surrounding the bottom portion, and an outer frame portion surrounding the leg portion, and each of the leg portions extends along the inner circumference of the outer frame portion, and one end in the longitudinal direction of the leg portion is connected to the outer frame portion and the other end in the longitudinal direction of the leg portion is connected to the bottom portion, and when the bottom portion of the sheet body is pushed below the outer frame portion, each of the leg portions bends downward at the boundary with the outer frame portion, thereby forming a storage space between the bottom portion and the leg portion that can hold an object to be stored, and the inner circumference of the outer frame portion is rectangular, with the short side being A and the long side being B, and the length of the leg portion along the short side of the inner circumference of the outer frame portion being a and the length of the leg portion along the long side being b, then the length of b is b ２ = a ２ -1 / 4 (A ２ ―B ２ It is preferable to have a configuration determined by the relationship between the two equations.

[0013] With this configuration, when the frame transforms into a storage frame, the connection point between the bottom and the legs is located directly below the midpoint of either the long or short side of the inner circumference of the outer frame, thus providing the most stable hold on the storage object, such as a container, within the storage space.

[0014] In the container with a holding frame according to the invention, it is preferable that the container holding frame sheet is a container holding frame sheet that holds a container which is the object to be stored, and that the container holding frame is formed by deforming the container holding frame sheet and is capable of holding a container in the storage space between the bottom and the legs that rise from the bottom, and that the container is held in the storage space.

[0015] This configuration allows for more stable storage of containers within the deformed container holding frame, resulting in the most stable container hold within the storage space.

[0016] In the container with a holding frame according to the invention, the container holding frame sheet is a container holding frame sheet that holds a container which is the object to be stored, and it is preferable that the container holding frame is formed by deforming the container holding frame sheet and is capable of holding a container in the storage space between the bottom and the legs that rise from the bottom, and a container having a longitudinal direction and a short direction held in the storage space.

[0017] With this configuration, even when using containers that have both a long and short side, it becomes possible to store the containers more stably in the deformed container holding frame, thus providing the most stable container hold within the storage space.

[0018] In the container with a retaining frame according to the invention, it is preferable that the opening diameter in the direction of one side of the container is larger than the length of one side of the inner circumference of the outer frame portion of the container retaining frame, and the opening diameter in the direction of the other side of the container is larger than the length of the other side of the inner circumference of the outer frame portion of the container retaining frame.

[0019] This configuration makes it easier for the peripheral walls of the container to engage with the inner circumference of the outer frame, thereby suppressing displacement and other movements of the container within its storage space.

[0020] In the container holding frame according to the invention, it is preferable to adopt a configuration in which the diameter of the opening in the longitudinal direction of the container is larger than the length of the long side of the inner circumference of the outer frame of the container holding frame, and the diameter of the opening in the short direction of the container is larger than the length of the short side of the inner circumference of the outer frame of the container holding frame. With this configuration, even when using a container that has both a longitudinal and a short direction, the peripheral wall of the container is more easily locked to the inner circumference of the outer frame, thereby suppressing displacement and other movements of the container within the storage space.

[0021] In the container holding frame according to the invention, it is preferable that the container has a bottom wall and a peripheral wall rising from the periphery of the bottom wall, and that the peripheral wall has folds that can engage with the inner circumference of the outer frame portion of the container holding frame. With this configuration, the folds engage with the inner circumference of the outer frame portion, which further suppresses displacement and other movements of the container within the storage space.

[0022] In order to solve the above-mentioned problem, the sheet for a storage object holding frame according to the present invention consists of a single sheet body provided with a plurality of score lines or breakable lines, and is partitioned into a bottom part, leg parts surrounding the bottom part, and an outer frame surrounding the leg parts by the plurality of score lines or breakable lines. Each of the leg parts extends along an inner periphery of the outer frame part, one end in a longitudinal direction of each leg part is connected to the outer frame part, and the other end in the longitudinal direction is connected to the bottom part. When the bottom part of the sheet body is pushed downward below the outer frame part, each of the leg parts is bent downward at a boundary with the outer frame part accordingly, whereby a storage space capable of holding a storage object can be formed between the bottom part and the leg parts. The inner periphery of the outer frame part is substantially rectangular, and when a is a length of the leg part along a short side of the inner periphery of the outer frame part and b is a length of the leg part along a long side of the inner periphery of the outer frame part, a configuration is adopted such that 1.19 ≤ b / a ≤ 1.54 is satisfied.

[0023] With this configuration, since the leg parts along the long side of the inner periphery of the outer frame part do not become excessively longer than the leg parts along the short side, the overall balance when assembled into the holding frame is maintained, a gap between the leg parts along the long side of the outer frame part and the outer frame part or the bottom part does not become large, and detachment or large displacement of the storage object in the storage space is prevented. In addition, since the length of the leg parts along the long side of the inner periphery of the outer frame part does not become substantially the same as that of the leg parts along the short side, and a difference in length of a certain level or more is generated, twisting of the whole due to distortion of the outer frame part and the bottom part when assembled into the holding frame is prevented. If b / a is less than 1.19, the length of the leg parts along the long side of the inner periphery of the outer frame part becomes too close to that of the leg parts along the short side, resulting in twisting when assembled into the holding frame. In addition, if b / a exceeds 1.54, the leg parts along the long side of the inner periphery of the outer frame part become too long compared to the leg parts along the short side, so that the gap between the leg parts along the long side and the outer frame part or the bottom part becomes excessively large, and the container in the storage space is detached or largely displaced through the gap.

[0024] In the sheet for a storage object holding frame according to the present invention, a basis weight of the sheet body is 100 g / m ２ to 350 g / m ２ A configuration satisfying the following range can be employed. With this configuration, twisting or distortion during deformation into the holding frame is not promoted. If the basis weight is less than 100 g / m２ If the basis weight is less than 350 g / m ２ exceeding the above value, the thickness is too large, which makes punching of the sheet difficult, or causes excessive stiffness that may lead to defects in assembling into the storage object holding frame.

[0025] For the sheet for a storage object holding frame according to the present invention, a configuration can be adopted in which the included angle formed between the bottom portion and the leg portion is not less than 40.33° and not more than 51.79°. With this configuration, the included angle between the bottom portion and the leg portion is maintained at an appropriate value, which does not promote twisting or distortion during deformation into the holding frame, nor does it promote detachment or shifting movement of the storage object from the storage space.

[0026] In order to solve the above-mentioned problems, in the container with a container holding frame according to the present invention, the sheet for a storage object holding frame is a sheet for a container holding frame that holds a container, which is the storage object; the configuration comprises: a container holding frame formed by deforming the sheet for a container holding frame, the container holding frame being capable of holding a container in a storage space between the bottom portion and the leg portion rising from the bottom portion; and a container held in the storage space, the container having a longitudinal direction and a transverse direction.

[0027] In the container holding frame according to the present invention, it is preferable to adopt a configuration in which the opening diameter in the longitudinal direction of the container is larger than the length of the long side of the inner circumference of the outer frame portion of the container holding frame, and the opening diameter in the transverse direction of the container is larger than the length of the short side of the inner circumference of the outer frame portion of the container holding frame. With this configuration, the peripheral wall of the container is easily locked to the inner circumference of the outer frame portion, so shifting movement of the container within the storage space is suppressed.

[0028] In the container holding frame according to the present invention, it is preferable to adopt a configuration in which the container has a bottom wall and a peripheral wall rising from the peripheral edge of the bottom wall, and a fold capable of engaging with the inner circumference of the outer frame portion of the container holding frame is formed on the peripheral wall. With this configuration, the fold engages with the inner circumference of the outer frame portion, so shifting movement of the container within the storage space is further suppressed.

[0029] Since the sheet for a storage object holding frame and the like according to the present invention is configured as described above, it has become possible to prevent the entire body from twisting and the container from shifting, moving or detaching during assembly to the holding frame.

[0030] A plan view of the sheet for a container holding frame according to an embodiment; an enlarged plan view of essential parts of the sheet for a container holding frame according to an embodiment; a perspective view showing the sheet for a container holding frame according to an embodiment in the middle of assembly; a plan view of essential parts of a container with a holding frame according to an embodiment; a side view of essential parts of the container with a holding frame according to an embodiment; a plan view showing the dimensional relationship between the sheet for a container holding frame and a container according to an embodiment; a plan view showing the dimensional relationship of each part of the sheet for a container holding frame according to an embodiment; a side view showing the included angle between the bottom portion and the leg portion of the container with a holding frame according to an embodiment; a perspective view of the container with a holding frame according to an embodiment, which is a schematic diagram showing the positional and dimensional relationships of each part; a perspective view of the container with a holding frame according to an embodiment, which is a schematic diagram showing the positional and dimensional relationships of each part; an exploded perspective view of essential parts showing another example of the container with a holding frame according to an embodiment; a plan view of essential parts showing another example of the container with a holding frame according to an embodiment; a side view of essential parts showing another example of the container with a holding frame according to an embodiment

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the sheet for a storage object holding frame of the present invention shown in FIGS. 1A and 1B, the container holding frame sheet 10 of the embodiment, which holds a container that is a storage object, can be deformed to assemble the container holding frame 10 of the embodiment for holding the container 20 in which food or the like is stored.

[0032] As shown in FIGS. 1A and 1B, the container holding frame sheet 10 of the embodiment is a sheet body that is substantially rectangular as a whole, with four corners rounded in an arc shape. A plurality of score lines are formed on the container holding frame sheet 10, whereby the sheet is divided into an outer frame portion 11, a leg portion 12, and a bottom portion 13. Furthermore, these divisions are arranged as four divisions on the container holding frame sheet 10, such that when the container holding frame sheet 10 is deformed and assembled, one container described later can be stored in each of these divisions. The material of the sheet body forming the container holding frame sheet 10 is not particularly limited, and examples thereof include paper, synthetic resin films, metal foils such as aluminum foil, or composites thereof; it is preferable that the sheet body is mainly composed of paper as such material is environmentally friendly and easy to dispose of or incinerate.

[0033] Furthermore, the thickness (basis weight in the case of paper) of the container holding frame sheet 10 is not particularly limited, but is 100 g / m². ２ 350g / m or more ２ Preferably, it is 190 g / m². ２ More than 230g / m ２ The following is more preferable: Basis weight of 100 g / m² ２ If the thickness is less than 350 g / m², the thickness may be too small, causing the container holder frame to tear due to pressure from the container during assembly, deform when the container is set in the holder frame and sent down the production line, or make the holder frame more prone to deformation, which may cause the container to easily come loose after being set. ２ If the thickness is too great, it may be difficult to die-cut the sheet, or it may become too stiff, causing problems such as the paper springing back after assembly into the container frame.

[0034] The dimensions of the container holding frame sheet 10 are not particularly limited, but when transformed into the container holding frame 10, it is possible to illustrate that the overall short side of the container holding frame sheet 10 is 100 mm to 150 mm and the long side is 150 mm to 200 mm, so that when it is transformed into the container holding frame 10, it is divided into four sections, two rows each on the front, back, left, and right, so that four containers can be held in each section. In this case, the dimensions of one section are exemplified as the outer dimensions of the short side of the outer frame 11 being 50 mm to 75 mm and the outer dimensions of the long side of the outer frame 11 being 75 mm to 100 mm. However, the dimensions of each section are not limited to these, and the above dimensions can be set appropriately according to the dimensions of the container 20 to be stored, and are not limited to the above-mentioned dimensional ranges. Note that the contents are not limited to food.

[0035] As shown in Figures 1A and 1B, the outer frame portion 11 consists of a rectangular annular frame body 11a and a cross-shaped partition frame 11b. As described above, the portion of the container holding frame sheet 10 enclosed by the frame body 11a is divided into four sections by the partition frame 11b, two rows each in the front, back, left, and right directions, each forming a rectangular container holding section. Each container holding section consists of four legs 12 and one bottom 13.

[0036] As shown in Figures 1A and 1B, the partition frame 11b of the outer frame 11 has cross-shaped perforations 11c that traverse the outer frame 11 in the vertical, horizontal, and vertical directions. At the outer edge of the outer frame 11 where the perforations 11c reach, there are notches 11d that serve as a trigger for breaking the perforations 11c. By breaking these perforations 11c, the container holding parts can be separated individually.

[0037] As shown in Figures 2, 3A, and 3B, when the container holding frame sheet 10 is deformed, the outer frame portion 11 becomes a framework that supports the container holding portion. The outer dimensions of the outer frame portion 11 match the dimensions of the container holding frame sheet 10. The width of the frame body 11a and partition frame 11b of the outer frame portion 11 is not particularly limited, but can be exemplified as 3 mm to 20 mm, and more preferably as 8 mm to 12 mm. If the width is less than 3 mm, the strength of the outer frame portion 11 may be insufficient and it may break when deformed, and if the width is greater than 20 mm, the overall dimensions of the container holding frame sheet 10 will also increase, and the size of the packaging when packaging after deformation may also increase accordingly. The inner circumference of the outer frame portion 11 is rectangular.

[0038] As shown in Figures 1A and 1B, each of the four legs 12 in the container holder is an elongated rectangle, and they are arranged adjacent to each other so that their longitudinal direction aligns with the four sides of the inner circumference of the rectangle of the outer frame 11. One end (outer end) of each leg 12 is connected to the outer frame 11. A crease line 12a is formed at the boundary between the leg 12 and the outer frame 11, serving as a line for easy bending. The crease line 12a extends along the inner circumference of the outer frame 11. This crease line 12a allows the leg 12 to be bent relative to the outer frame 11. Furthermore, each leg 12 and the outer frame 11 are cut by a straight outer line 12c, which is a cutting line, except at the aforementioned connection points. The outer line 12c is curved in an arc shape at the boundary between the leg 12 and the outer frame 11. As a result, the leg 12 is widened and reinforced near the boundary with the outer frame 11.

[0039] As shown in Figures 2, 3A, and 3B, when the container holding frame sheet 10 deforms, the legs 12 support the outer circumference of the container 20. The dimensions of the legs 12 are not particularly limited, but suitable dimensions for adequately supporting the outer circumference of a container 20, such as a side dish cup, include a length of 20 mm to 95 mm, more preferably a length of 30 mm to 80 mm, and a width of 2 mm to 15 mm, more preferably a width of 5 mm to 7 mm. If the length is less than 20 mm, the height of the container 20 when filled with food will exceed this, causing it to protrude from the container holding frame 10, and there is a risk that the container 20 cannot be fixed within the storage space of the container holding frame 10. If the length exceeds 95 mm, it will be too large compared to the height of a typical container, and there is a risk that the container 20 may shift around within the storage space. Furthermore, if the width is less than 2 mm, the strength of the legs 12 may be insufficient, and they may break during deformation. If the width exceeds 15 mm, the legs 12 may become too large, and when bending the boundary with the bottom 13 and outer frame 11 (described later) during deformation, the strength of the legs 12 may become too strong, making deformation difficult. Also, the overall dimensions of the container holding frame sheet 10 will increase, and the size of the packaged product when packaging after deformation may also increase accordingly.

[0040] As shown in Figures 1A and 1B, the bottom portion 13 of each container holder is roughly rectangular, and its four outer edges are arranged adjacent to the four legs 12. Of the ends of each leg 12, the end opposite to the side connected to the outer frame 11 (the inner end) is connected to the bottom portion 13. The legs 12 are bendable relative to the bottom portion 13. In addition, each leg 12 and the bottom portion 13 are cut by a straight inner line 12d, which is a cutting line, except for the aforementioned connection points.

[0041] As shown in Figures 2, 3A, and 3B, when the container holding frame sheet 10 deforms, the bottom portion 13 supports the bottom of the container 20. The dimensions (absolute values) of the roughly rectangular bottom portion 13 are not particularly limited, but suitable dimensions for adequately supporting the bottom of a container 20, such as a side dish cup, are 20 mm to 70 mm for the short side and 40 mm to 80 mm for the long side. If the length is less than these, it will be smaller than the dimensions of the bottom of a typical oval-shaped container 20, which has a long side and a short side, and there is a risk that the container 20 cannot be stored. Conversely, if the length is greater than these, it will be too large than the dimensions of the bottom of a typical oval-shaped container 20, and there is a risk that the container 20 will shift or tip over in the storage space.

[0042] Here, as shown in Figures 4A and 4B, if we consider the inner circumference of the rectangle of the outer frame 11, let A be the length of one side, which is the shorter side, and B be the length of the other side, which is the longer side perpendicular to the first side, and let a be the length of the leg portion 12 along the shorter side of the inner circumference of the outer frame 11, and b be the length of the leg portion 12 along the longer side, then b ２ = a ２ -1 / 4 (A ２ ―B ２The following equation holds true. That is, given lengths a, A, and B, length b is determined based on this equation. In this case, as shown in Figures 2, 3A, and 3B, when the structure is transformed into a container holding frame, the connection point between the bottom 13 and the legs 12 is located directly below the midpoint of the long side and the midpoint of the short side of the inner circumference of the outer frame 11, and the holding of the container 20 in the storage space is most stable. The above equation is derived as follows. In Figures 6A and 6B, if the distance between the long side of the inner circumference of the outer frame 11 and the bottom 13 is h2, and the distance between the short side of the inner circumference of the outer frame 11 and the bottom 13 is h1, then the following two equations hold true. h1 ２ = a ２ - (1 / 2A) ２ h2 ２ = b ２ - (1 / 2B) ２ Here, assuming there is no distortion or twisting in the retaining frame, h1 ≈ h2, so a ２ - (1 / 2A) ２ = b ２ - (1 / 2B) ２ This is established, and by organizing it, b ２ = a ２ -1 / 4 (A ２ ―B ２ This leads to the derivation of ).

[0043] Similarly, as shown in Figures 4A and 4B, if the length of the leg along the short side of the inner circumference of the outer frame is a and the length of the leg along the long side is b, then the lengths of a and b are adjusted so that 1.19 ≤ b / a ≤ 1.54 holds true. A more preferable range is 1.36 ≤ b / a ≤ 1.43. If b / a is less than 1.19, the length of the leg along the long side of the inner circumference of the outer frame becomes too close to the length of the leg along the short side, causing the retaining frame to twist when assembled. Also, if b / a is greater than 1.54, the length of the leg along the long side of the inner circumference of the outer frame becomes too long compared to the leg along the short side, resulting in an excessively large gap between the leg along the long side and the outer frame or bottom, causing the container in the storage space to detach or shift significantly through that gap.

[0044] Here, as shown in Figures 1A and 1B, the outer line 12c and inner line 12d located on both sides of each leg 12 form a pair of parallel side lines. In each container holding section, there are four side line pairs corresponding to each leg 12. Adjacent side line pairs are almost perpendicular to each other. Although the side line pairs were shown as a pair of parallel lines, they are not limited to this. Between two adjacent side line pairs, the outer line 12c of one side line pair communicates with the inner line 12d of the other side line pair, forming an L-shaped gap. However, the inner line 12d of one side line pair and the outer line 12c of the other side line pair are separated by the inner line 12d of the other side line pair and do not communicate. Thus, as shown in Figures 1A and 1B, in each container holding section, there are four L-shaped gaps where the outer line 12c and inner line 12d are connected, spaced apart and arranged in a kind of swastika pattern.

[0045] Here, although not shown in the embodiments of Figures 1A and 1B, forming a scribe line 12b at the boundary between the leg portion 12 and the bottom portion 13 makes it possible to easily deform into a container holding frame and also makes it possible to increase the amount of protrusion of the leg portion 12 below the bottom portion 13, resulting in a state where the bottom portion 13 appears to be raised. Alternatively, by forming the scribe line 12b diagonally across the corner of the bottom portion 13 from the end of the inner line 12d of one of two adjacent pairs of side lines to the middle of the inner line 12d of the other pair of side lines, it is possible to make the bottom portion 13 flat without being raised, the opposite of the above. Alternatively, the leg portion 12 and the bottom portion 13 may be connected directly without forming a scribe line 12b.

[0046] The configuration of the container holding frame sheet 10 in this embodiment is as described above. Next, an example of how to transform (assemble) the container holding frame 10 will be explained with reference to Figures 2 to 3B.

[0047] For example, first, with the outer frame portion 11 of the container holding frame sheet 10 supported in a horizontal position, the bottom portion 13 of the container holding portion is pushed downward. In response, the legs 12 of the container holding portion bend downward at the scribed line 12a that marks the boundary with the outer frame portion 11.

[0048] As the bottom portion 13 descends, the scribed line 12b at the boundary between the bottom portion 13 and the leg portion 12 also folds in a mountain fold shape when viewed from above. At this time, the bottom portion 13 rotates along the horizontal plane so that the positions of its four corners are offset from the positions of the four corners of the inner circumference of the outer frame portion 11. The scribed line 12a allows for smooth folding at the boundary between the leg portion 12 and the outer frame portion 11. In this embodiment, the scribed line 12a is formed in a concave shape when viewed from the upper side of the container holding frame sheet 10. This allows for regular control of folding at these boundaries. However, this does not preclude forming it in a convex shape, and the scribed line 12a is not essential.

[0049] Thus, the container holding frame 10 is completed. Here, the angle α between the bottom portion 13 and the leg portion 12, as shown in Figure 5, is not particularly limited, but is preferably 40.33° or more and 51.79° or less, and more preferably 40.63° or more and 47.46° or less. Note that the angle α is the angle between the leg portion 12 along the long side and the bottom portion 13 when the leg portion 12 along the short side is deformed to a position where it is perpendicular to the bottom portion 13 (i.e., the position where the height from the bottom portion 13 formed by the leg portion 12 along the short side to the outer frame portion 11 is the maximum height). Furthermore, if the container holding frame sheet 10 is made mainly of paper, even if the legs 12 along the short side are deformed to a position where the height from the bottom 13 formed by the legs to the outer frame 11 is the maximum height, if the height of the container to be stored is lower than that maximum height, the height of the outer frame 11 will decrease to the height of the container due to the springback of the paper. In such cases as well, the angle α is determined by measuring the angle between the legs 12 along the long side and the bottom 13 when the legs 12 along the short side are deformed to a position where they are perpendicular to the bottom 13, and whether or not it is within a predetermined angle range. With this configuration, the angle between the bottom and the legs becomes appropriate, and does not promote twisting or distortion during deformation into a holding frame, or detachment or displacement of the container from the storage space. Between the bottom 13 and the legs 12, a three-dimensional storage space is formed that opens onto the outer frame 11, and an oval-shaped container 20 filled with frozen food or the like is stored in this storage space. In this embodiment, four containers 20 are housed in four container holding sections.

[0050] In this state, the product is packaged in a packaging bag or box and then put up for sale. The consumer who purchases it can remove the packaging and then break the perforations 11c formed in the partition frame 11b of the outer frame 11 to take out the required amount of container 20 stored in the container holder.

[0051] The type of container 20 is not particularly limited, but Figures 2, 3A, and 3B illustrate containers 20 such as food cups, which are made by press-molding sheets of paper, synthetic resin film, metal foil such as aluminum foil, or composites thereof. The oval-shaped container 20 has a roughly oval bottom wall 21 in plan view and a peripheral wall 22 that spreads out and rises from the bottom wall 21, and the peripheral wall 22 has folds 22a formed on it due to press molding. The container 20 opens upwards, and it is possible to fill it with goods or other items through the opening.

[0052] As described above, the peripheral wall 22 of the container 20 has gear-like irregularities formed by the folds 22a, so that it engages with the legs 12 of the container holding frame 10 and the opening edge of the outer frame 11. Also, as shown in Figures 4A and 4B, the container 20 has an opening length W1 in the short direction that is slightly larger than the length A of the short side of the inner circumference of the outer frame 11, and an opening length W2 in the long direction that is slightly larger than the length B of the long side of the inner circumference of the outer frame 11. Due to this dimensional relationship, when the container 20 is held in the storage space, the apparent opening does not narrow, making it easy to fill with food, and the container 20 is easily locked into the outer frame 11. Note that the opening length W1 in the short direction is smaller than the length B of the long side of the inner circumference of the outer frame 11. In this way, the container 20 is constructed with a holding frame, which enhances its integrity so that it does not fall out of the storage space of the container holding frame 10 and does not shift around within the storage space.

[0053] The present invention will be further clarified by the following examples and comparative examples. Using container holding frame sheets with the same structure as those in Figures 1A and 1B, container holding frame sheets for Examples 1 to 7 and Comparative Examples 1 to 8, as shown in Tables 1 and 2, were manufactured by varying the length of the legs, etc. Here, in each example and comparative example in Table 1, the length B of the long side of the inner circumference of the outer frame was 83 mm and the length A of the short side of the inner circumference of the outer frame was 54 mm. In each example and comparative example in Table 2, the length B of the long side of the inner circumference of the outer frame was 61 mm and the length A of the short side of the inner circumference of the outer frame was 38 mm.

[0054]

[0055]

[0056] The container holding frame sheets for Examples 1 to 7 and Comparative Examples 1 to 8 were assembled onto the container holding frame, and the containers were set to create containers with holding frames. The angle between the bottom and legs was measured, and the container holding performance and the twisting performance of the holding frame were evaluated. The results are shown in Tables 3 and 4. In Tables 3 and 4, holding performance was evaluated as good if neither detachment nor displacement of the container occurred, and as poor if detachment or displacement occurred. Twisting performance was evaluated as × if there was a height difference of 3 mm or more distortion in the outer frame or bottom of the container holding frame, ○ if there was a distortion of less than 3 mm, and ◎ if there was a distortion of less than 2 mm.

[0057]

[0058]

[0059] As can be seen from Tables 3 and 4, the comparative example showed inferiority in either holding ability or twisting ability, whereas the example demonstrated good holding ability and twisting ability in both cases.

[0060] The embodiments and examples disclosed herein are illustrative in all respects and are not restrictive. The scope of the invention is defined by the claims, and all modifications are within the meaning and scope of the claims.

[0061] In the embodiment, a so-called oval-shaped container 20 in the container with a retaining frame was given as an example, but the shape of the container 20 may be a circle or a square, as long as one side extends in a direction and the other side perpendicular to that side extends in a direction. Furthermore, if the direction in which one side extends is the short side direction and the direction in which the other side extends is the long side direction, the shape is not limited as long as it has a long side direction and a short side direction, and for example, it may be rectangular, as shown in Figures 7A to 7C. Also, in the embodiment, the container 20 was given as the object to be stored, but it is not limited to this.

[0062] 10 Container holding frame sheet (container holding frame) 11 Outer frame part 11a Frame body 11b Partition frame 11c Perforation 11d Notch 12 Leg part 12a Ruled line 12c Outer line 12d Inner line 13 Bottom part 20 Container 21 Bottom wall 22 Peripheral wall 22a Pleats A Length of the short side of the outer frame part B Length of the long side of the outer frame part a Length of the leg part along the short side b Length of the leg part along the long side α Angle between the bottom and the leg part h1 Distance between the short side of the inner circumference of the outer frame part 11 and the bottom part 13 h2 Distance between the long side of the inner circumference of the outer frame part 11 and the bottom part 13

Claims

1. A sheet for holding an object to be stored, comprising a single sheet body with multiple cut lines or easy-break lines, wherein the multiple cut lines or easy-break lines divide the sheet body into a bottom, a leg portion surrounding the bottom, and an outer frame portion surrounding the leg portion, each of the leg portions extending along the inner circumference of the outer frame portion, with one end in the longitudinal direction connected to the outer frame portion and the other end in the longitudinal direction connected to the bottom portion, wherein when the bottom portion of the sheet body is pushed below the outer frame portion, each of the leg portions bends downward at the boundary with the outer frame portion, thereby forming a storage space between the bottom portion and the leg portion capable of holding an object to be stored, wherein the inner circumference of the outer frame portion is rectangular, with the length of one side being A and the length of the other side perpendicular to the first side being B, When the length of the leg along one side of the inner circumference of the outer frame is a, and the length of the leg along the other side is b, the length of b is determined by the following relational expression for the storage object holding frame sheet. ２ = a ２ -1 / 4 (A ２ ―B ２ ) 2. The sheet for a storage object holding frame according to claim 1, wherein one side is the short side and the other side is the long side.

3. A container with a container frame, wherein the container holding frame sheet described in claim 1 is a container holding frame sheet for holding a container that is a container to be stored, and the container holding frame is formed by deforming the container holding frame sheet, and is capable of holding a container in a storage space between the bottom and the legs rising from the bottom, and the container held in the storage space.

4. A container with a container frame, wherein the container holding frame sheet described in claim 2 is a container holding frame sheet for holding a container that is a container to be stored, and the container holding frame is formed by deforming the container holding frame sheet, and is capable of holding a container in a storage space between the bottom and the legs rising from the bottom, and a container having a longitudinal direction and a short direction held in the storage space.

5. The container with a retaining frame according to claim 3, wherein the diameter of the opening in the direction of one side of the container is greater than the length of one side of the inner circumference of the outer frame portion of the container retaining frame, and the diameter of the opening in the direction of the other side of the container is greater than the length of the other side of the inner circumference of the outer frame portion of the container retaining frame.

6. The container with a retaining frame according to claim 4, wherein the longitudinal opening diameter of the container is greater than the length of the long side of the inner circumference of the outer frame portion of the container retaining frame, and the short opening diameter of the container is greater than the length of the short side of the inner circumference of the outer frame portion of the container retaining frame.

7. The container with a retaining frame according to any one of claims 3 to 6, wherein the container has a bottom wall and a peripheral wall rising from the periphery of the bottom wall, and the peripheral wall has folds that can engage with the inner circumference of the outer frame portion of the container retaining frame.

8. A sheet for holding an object to be stored, comprising a single sheet body with multiple cut lines or easy-break lines, wherein the sheet is divided by the multiple cut lines or easy-break lines into a bottom portion, a leg portion surrounding the bottom portion, and an outer frame portion surrounding the leg portion, each of the leg portions extending along the inner circumference of the outer frame portion, with one end in the longitudinal direction connected to the outer frame portion and the other end in the longitudinal direction connected to the bottom portion, wherein when the bottom portion of the sheet body is pushed below the outer frame portion, each of the leg portions bends downward at the boundary with the outer frame portion, thereby forming a storage space between the bottom portion and the leg portion capable of holding a container, wherein the inner circumference of the outer frame portion is substantially rectangular, and when the length of the leg portion along the short side of the inner circumference of the outer frame portion is a and the length of the leg portion along the long side is b, the following relationship holds for the sheet for holding an object to be stored: 1.19 ≤ b / a ≤ 1.54 9. The basis weight of the sheet material is 100 g / m². ２ 350g / m or more ２ The sheet for the object-holding frame according to claim 8 is as follows:

10. The sheet for a storage object holding frame according to claim 8 or 9, wherein the angle between the bottom and the legs is 40.33° or more and 51.79° or less.

11. A container with a container frame, wherein the container holding frame sheet according to any one of claims 8 to 10 is a container holding frame sheet for holding a container which is a container to be stored, and the container holding frame is formed by deforming the container holding frame sheet and is capable of holding a container in a storage space between the bottom and the legs rising from the bottom, and a container having a longitudinal direction and a short direction held in the storage space.

12. The container with a retaining frame according to claim 11, wherein the longitudinal opening diameter of the container is greater than the length of the long side of the inner circumference of the outer frame portion of the container retaining frame, and the short opening diameter of the container is greater than the length of the short side of the inner circumference of the outer frame portion of the container retaining frame.

13. The container with a retaining frame according to claim 11 or 12, wherein the container has a bottom wall and a peripheral wall rising from the periphery of the bottom wall, and the peripheral wall has folds that can engage with the inner circumference of the outer frame portion of the container retaining frame.

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