Bag with stirring function and stirring device

Abstract

To provide a bag with a stirring function and a stirring device that can reduce transportation costs. [Solution] The stirring bag 1 is characterized by comprising: a strip portion 111 cut from a flexible flat plate; a shape-changing portion 12 that receives a predetermined driving force to raise the strip portion 111 to form a three-dimensional shape and dynamically deforms the three-dimensional shape to make the strip portion 111 function as a blade for stirring the object to be stirred 1a; and a bag 13 that contains the strip portion 111, at least one part of the shape-changing portion 12, and the object to be stirred 1a, and which, when empty and not containing the object to be stirred 1a, can be folded together with the shape-changing portion 12 into a flat, foldable sheet that encloses the flat strip portion 111.

Description

Technical Field

[0001] The present invention relates to a bag body with a stirring function for containing and stirring an object to be stirred, and a stirring device provided with the bag body with the stirring function.

Background Art

[0002] Conventionally, for example, in the field of the medical industry, a bag body with a stirring function for containing a culture solution as an object to be stirred has been proposed (see, for example, Patent Document 1). The bag body with the stirring function described in Patent Document 1 includes a bag for culturing and blades installed therein for stirring the object to be stirred. And during transportation, it is to be carried in a state of being set in a predetermined package.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the bag body with the stirring function described in the above Patent Document 1 has a problem that the transportation size is large and the transportation cost increases because a package corresponding to its size must be prepared.

[0005] Therefore, an object of the present invention is to provide a bag body with a stirring function and a stirring device capable of suppressing transportation costs in order to solve the problems existing in the prior art.

Means for Solving the Problems

[0006] The bag with stirring function that solves the above-mentioned problems comprises a strip portion cut from a flexible flat plate so as to extend in a curved strip shape or a bent strip shape in which a straight strip is continuously curved along an arc or spiral that surrounds a predetermined center for more than half a circumference, and a three-dimensional shape formed by raising the strip portion by receiving a predetermined driving force and separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane containing the arc or spiral, and the three-dimensional shape formed at the pair of ends A shape-changing section that dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance in the original rising direction and the relative angle in the circumferential direction, while also allowing return to the flat state before rising and subsequent rising, thereby enabling the strip portion to function as a blade for stirring the material to be stirred; a bag for containing the strip portion, at least one part of the shape-changing section, and the material to be stirred; and a foldable bag that, when empty and not containing the material to be stirred, can be folded together with the shape-changing section into a flat, foldable sheet that encloses the flat strip portion. The shape-changing portion has a string-like object connected to one end of the strip portion, and the string-like object moves in the three-dimensional rising direction in response to the driving force to form the three-dimensional shape, the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement, and when the folding bag is folded, the string-like object is folded together with the folding bag. Furthermore, the bag with stirring function that solves the above-mentioned problems comprises a strip portion cut from a flexible flat plate so as to extend in a curved strip shape, or in a bent strip shape where a straight strip is continuously curved, along an arc or spiral that surrounds a predetermined center for more than half a circumference in the circumferential direction, and a blade that stirs the object to be stirred by receiving a predetermined driving force, which causes a pair of ends of the strip portion to separate from each other in a three-dimensional rising direction perpendicular to the plane including the arc or spiral, thereby raising the strip portion to form a three-dimensional shape, and by repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends, the three-dimensional shape is dynamically deformed while allowing return to the flat state before rising and re-rising, thereby forming a blade that stirs the object to be stirred. The invention comprises a shape-changing section that enables the strip portion to function, a bag for containing the strip portion, at least one part of the shape-changing section, and the object to be stirred, wherein when the object to be stirred is not contained, the shape-changing section can be folded together with the shape-changing section into a flat, foldable sheet that encloses the flat strip portion, and the shape-changing section has a balloon and a weight connected to one end of the strip portion, and the balloon receives buoyancy from the supply of air to the balloon as the driving force, causing the balloon to move in the three-dimensional upright direction to form the three-dimensional shape, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement by repeatedly supplying and venting air, and when the foldable bag is folded, the airless balloon is folded together with the foldable bag. Furthermore, the bag with stirring function that solves the above-mentioned problems comprises a strip portion cut from a flexible flat plate so as to extend in a curved strip shape or a bent strip shape in which a straight strip is continuously curved along an arc or spiral that surrounds a predetermined center for more than half a circumference, and a three-dimensional shape formed by raising the strip portion by receiving a predetermined driving force and separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane including the arc or spiral, and the three-dimensional rising direction of the pair of ends The shape-changing section dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance and the relative angle in the circumferential direction, while also allowing return to the flat state before rising and subsequent rising, thereby causing the strip portion to function as a blade for stirring the material to be stirred; the bag contains the strip portion, at least one part of the shape-changing section, and the material to be stirred, and when the material to be stirred is not yet contained, the foldable bag can be folded together with the shape-changing section into a flat, foldable sheet that encloses the flat strip portion, and the foldable bag, when folded, The structure comprises a bottom sheet and a top sheet sandwiching the flat strip portion between them, and a side sheet connecting the two, which becomes cylindrical when extended and folds to conform to the shape of the bottom sheet and the top sheet when folded. A through hole is formed in one of the target sheets, the bottom sheet, the top sheet, and the side sheet. The shape-changing portion has an internal sealed tube body that is connected to the inner surface of the target sheet so as to seal the through hole and is expandable and contractible in the three-dimensional rising direction, and the internal sealed tube body is opposite to the through hole. The outer end surface of the side is connected to one end of the strip portion, and the inner end surface of the internal sealed tube body corresponding to the outer end surface is moved in the three-dimensional rising direction, thereby causing the internal sealed tube body to be contracted in the three-dimensional rising direction and form the three-dimensional shape, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement of the inner end surface, and when the folding bag is folded, the internal sealed tube body is contracted to its maximum extent and sandwiched between the bottom sheet and the top sheet together with the flat strip portion. Furthermore, the bag with stirring function that solves the above-mentioned problems comprises a strip portion cut from a flexible flat plate so as to extend in a curved strip shape or a bent strip shape in which a straight strip is continuously curved along an arc or spiral that surrounds a predetermined center for more than half a circumference, and a three-dimensional shape formed by raising the strip portion by receiving a predetermined driving force and separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane including the arc or spiral, and repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends to form the three-dimensional shape The invention is characterized by a shape-changing section that dynamically deforms the strip portion while allowing it to return to a flat state before rising and to rise again, thereby enabling the strip portion to function as a blade for stirring the object to be stirred, and a bag for containing the strip portion, at least one part of the shape-changing section, and the object to be stirred, wherein when the object to be stirred is not yet contained, the foldable bag can be folded together with the shape-changing section into a flat foldable sheet that encloses the flat strip portion, and one of the pair of ends of the strip portion is a movable end that moves in the three-dimensional rising direction, and the shape-changing section has a movable part that is connected to the movable end and moves in the three-dimensional rising direction.

[0007] Furthermore, the stirring device that solves the above-mentioned problems is characterized by comprising the above-mentioned bag with stirring function, a holding frame that holds the bag with stirring function in the state in which the folded bag is extended, and a drive mechanism that applies the driving force to the shape changing part. [Effects of the Invention]

[0008] The above-described bag with stirring function and stirring device can reduce transportation costs. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows the bag with stirring function according to the first embodiment, at a stage where the stirring blades inside the bag have been flattened out and their three-dimensional shape has been eliminated. [Figure 2]Figure 1 shows the bag with stirring function, specifically the stage where the stirring blades inside the bag have risen into a three-dimensional shape without forming a constriction, thus eliminating the constriction. [Figure 3] Figure 1 shows the bag with stirring function, specifically the stage where the stirring blades inside the bag have been raised into a three-dimensional shape with a constriction. [Figure 4] Figures 1 to 3 show how the folding bag is folded into a flat, foldable sheet. [Figure 5] Figures 1 to 4 show a stirring device incorporating a bag with a stirring function. [Figure 6] This figure shows a bag with a stirring function according to the second embodiment. [Figure 7] This figure shows the bag with stirring function according to the third embodiment, specifically the stage where the stirring blades inside the bag have been flattened out and their three-dimensional shape has been eliminated. [Figure 8] Figure 7 shows the bag with stirring function, specifically the stage where the stirring blades inside the bag have risen into a three-dimensional shape without forming a constriction, thus eliminating the constriction. [Figure 9] Figure 7 shows the bag with stirring function in a constricted state, where the stirring blades inside the bag have been raised into a three-dimensional shape with a constriction. [Figure 10] Figures 7 to 9 show a modified example in which the rotational movement part of the third embodiment is used as a torsional rotation part. [Figure 11] This is a perspective view showing a bag with a stirring function according to the fourth embodiment. [Figure 12] These are plan views showing the first to eighth alternative examples of the strip portion constituting the stirring blade, in a flat state before being raised to a three-dimensional shape. [Figure 13] This figure shows a bag with a stirring function according to the fifth embodiment. [Figure 14] This figure shows a bag with a stirring function according to the sixth embodiment. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of a bag body with a stirring function and a stirring device will be described with reference to the drawings. First, the first embodiment will be described.

[0011] FIG. 1 is a view showing the bag body 1 with a stirring function according to the first embodiment at the stage where the stirring blade 11 inside the bag has been flattened with the rising to a three-dimensional shape eliminated. In FIG. 1(A), a side view of the bag body 1 with a stirring function is shown, in FIG. 1(B), a top view of the bag body 1 with a stirring function is shown, and in FIG. 1(C), a perspective view of the bag body 1 with a stirring function is shown.

[0012] Further, FIG. 2 is a view showing the bag body 1 with a stirring function shown in FIG. 1 at the stage where the stirring blade 11 inside the bag has been lifted into a three-dimensional shape without forming a constriction and is in a state where the constriction has been eliminated. In FIG. 2(A), a side view of the bag body 1 with a stirring function is shown, in FIG. 2(B), a top view of the bag body 1 with a stirring function is shown, and in FIG. 2(C), a perspective view of the bag body 1 with a stirring function is shown.

[0013] Further, FIG. 3 is a view showing the bag body 1 with a stirring function shown in FIG. 1 at the stage where the stirring blade 11 inside the bag has been lifted into a three-dimensional shape with a constriction formed and is in a constricted state. In FIG. 3(A), a side view of the bag body 1 with a stirring function is shown, in FIG. 3(B), a top view of the bag body 1 with a stirring function is shown, and in FIG. 3(C), a perspective view of the bag body 1 with a stirring function is shown.

[0014] The bag body 1 with a stirring function of the present embodiment is for performing stirring with a liquid such as a culture solution as a stirring target 1a, and includes a stirring blade 11, a shape changing part 12, and a folding bag 13.

[0015] The stirring blade 11 is a member cut out from a flexible circular flat plate so as to include a plurality of strip plate parts 111, a central flat plate part 112, and an annular flat plate part 113. The material of the flat plate can adopt various materials such as a thin metal plate, a silicone plate, a rubber plate, a synthetic resin plate, etc., as long as it has flexibility.

[0016] The strip portion 111 is a part cut from a flat plate so as to extend in a curved strip shape along a spiral that surrounds a predetermined center 11a in the circumferential direction D11 for more than half a circumference. In this embodiment, the strip portion 111 is a part that is integrally cut from the flat plate so as to align one-to-one with multiple spirals that extend from the center 11a in the same direction to each other, thereby constituting a multi-spiral plate. The central flat plate portion 112 is a part that is integrally cut from the flat plate with the ends of the multiple strip portions 111 on the center 11a side. The annular flat plate portion 113 is a part that is integrally cut from the flat plate with the outer ends of the spirals in the multiple strip portions 111, connecting the ends together.

[0017] The shape-changing section 12 receives a predetermined driving force and separates a pair of ends in each of the multiple strip sections 111 of the stirring blade 11 in a three-dimensional rising direction D12 perpendicular to the plane containing the vortex, thereby raising each strip section 111 and forming a three-dimensional shape. The shape-changing section 12 also dynamically deforms the three-dimensional shape by repeatedly changing the relative distance in the three-dimensional rising direction D12 at the pair of ends of each strip section 111, while also allowing return to the flat state before rising and subsequent rising as shown in Figure 1. Through this dynamic deformation of the three-dimensional shape, the shape-changing section 12 makes each strip section 111 of the stirring blade 11 function as a blade for stirring the object to be stirred 1a. Furthermore, the shape-changing section 12 forms a three-dimensional shape by separating the central flat plate section 112 and the annular flat plate section 113 from each other in the three-dimensional rising direction D12, and changes the relative distance between the pair of ends of each strip plate section 111 by changing the distance between the two in the three-dimensional rising direction D12.

[0018] The three-dimensional shape formed by this shape-changing section 12 is determined according to the amount of agitation material 1a contained in the foldable bag 13, as illustrated in Figures 2 and 3. In the example in Figure 2, the agitation material 1a is contained in about half of the foldable bag 13, and the central flat plate section 112 is moved to near the liquid surface of the agitation material 1a, forming a roughly conical three-dimensional shape in a state where the constriction has been eliminated but has not yet been formed. In the example in Figure 3, the agitation material 1a is contained in about 80% of the foldable bag 13, and the central flat plate section 112 is moved to near the liquid surface of the agitation material 1a, forming a roughly gourd-shaped three-dimensional shape with a constriction 111a formed in the middle. The dynamic change of the three-dimensional shape for agitation is a repeated change within one of the shape ranges, from the flat state in Figure 1 to the state where the constriction has been eliminated in Figure 2 and then to the constricted state in Figure 3. The stirring of the material to be stirred 1a is then performed by the dynamic change in the three-dimensional shape of the stirring blade 111. This shape-changing section 12 will be explained again later.

[0019] The foldable bag 13 is a bag that contains the stirring blade 11 including the strip portion 111, at least one part of the shape-changing portion 12, and the object to be stirred 1a. The forming material for the foldable bag 13 can be a single-layer film, laminated film, or overlapping film made of synthetic resin such as PE (polyethylene) or PP (polypropylene). All of these forming materials are foldable, impermeable to water, and can be joined by heat welding. When the foldable bag 13 made of such a material is empty and does not contain the object to be stirred 1a, it can be folded together with the shape-changing portion 12 into a flat foldable sheet that encloses the flattened stirring blade 11.

[0020] Figure 4 shows how the folding bag 13 shown in Figures 1 to 3 is folded into a flat folding sheet. Figure 4(A) shows a top view of the folding bag 13 in its folded state, and Figure 4(B) shows a perspective view of the folding bag 13 in its folded state. Figure 4(C) shows a perspective view of the folding bag 13 in the process of being folded, and Figure 4(D) shows a perspective view of the folding bag 13 in its unfolded state before folding.

[0021] The foldable bag 13 of the stirring bag 1 is a bag that has a roughly cubic shape when unfolded and has a bottom sheet 131, a top sheet 132, and a rectangular cylindrical side sheet 133. The bottom sheet 131 and the top sheet 132 are sheet portions that sandwich the flat stirring blade 11 between them when folded, and each is formed in a rectangular shape. The rectangular cylindrical side sheet 133 is a sheet portion that connects the bottom sheet 131 and the top sheet 132, becoming a rectangular cylindrical shape when unfolded, and folding to a shape that follows the bottom sheet 131 and the top sheet 132 when folded. In this embodiment, as shown in Figures 4(A) to 4(C), the rectangular cylindrical side sheet 133 is folded inward into the foldable bag 13 and sandwiched between the bottom sheet 131 and the top sheet 132. Such a foldable bag 13 is formed by joining the edges of six square sheets, each forming one of the faces of a cube, by adhesive or heat welding.

[0022] In this embodiment, as shown in Figures 1 to 4, the shape-changing section 12 is configured to have a string-like object 121 and an external sealing tube body 122. The string-like object 121 is connected to the central flat plate portion 112 of the stirring blade 11, and is connected to one end on the center 11a side of each of the multiple strip plate portions 111. The shape-changing section 12 is configured by the string-like object 121 being moved in the three-dimensional rising direction D12 by a driving force, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement. Then, as shown in Figure 4, when the folding bag 13 is folded, the string-like object 121, which is part of the shape-changing section 12, is folded together with the folding bag 13, and together with the flat stirring blade 11, it is wrapped in a flat folding sheet-like folding bag 13.

[0023] The external sealing tube 122 is a tube connected to the outer surface of the ceiling sheet 132 and expandable and contractible in the three-dimensional upward direction D12, and an example of this is a bellows tube. Here, one of the target sheets, the bottom sheet 131, the ceiling sheet 132, and the rectangular tube side sheet 133, has a through hole 132a formed therein to allow the string-like object 121, which serves as the shape-changing part 12, to pass through when it moves outward from the bag. In this embodiment, the string-like object 121 is configured to move in the direction of gravity as the three-dimensional upward direction D12, and the through hole 132a is formed in the ceiling sheet 132. The external sealing tube 122 is connected to the outer surface of the target sheet, i.e., the ceiling sheet 132, so as to seal this through hole 132a. The string-like object 121, which has passed through the through-hole 132a, is housed inside the external sealed tube body 122, and the end of the string-like object 121 is connected to the inner end face 122a of the external sealed tube body 122 on the side opposite to the through-hole 132a. When the outer end face 122b corresponding to this inner end face 122a is moved, the string-like object 121 is moved in the three-dimensional upward direction D12, and the amount of movement of the string-like object 121 is changed by changing the amount of movement of the outer end face 122b. In addition, the external sealed tube body 122 expands and contracts according to the amount of movement, and as shown in Figure 4, it is in its most contracted state when the folding bag 13 is folded.

[0024] In this shape-changing section 12, the string-like material 121 is connected to the central flat plate portion 112 of the stirring blade 11, with the ends on the central 11a side of each of the multiple strip-shaped portions 111 serving as movable ends. On the other hand, the outer peripheral ends of each strip-shaped portion 111, separate from the movable ends, are fixed ends that are fixed to the inner surface of the folding bag 13, specifically the bottom sheet 131, via the annular flat plate portion 113 of the stirring blade 11. The annular flat plate portion 113 is fixed to the inner surface of the bottom sheet 131 by adhesive or heat welding. When the folding bag 13 is folded, the multiple flat strip-shaped portions 111, the central flat plate portion 112, and the annular flat plate portion 113 become a single sheet and are wrapped together with the string-like material 121 in the folding sheet-shaped folding bag 13.

[0025] Furthermore, in the bag body 1 with stirring function of this embodiment, an injection tube 14 is provided for injecting the material to be stirred 1a into the unfolded folded bag 13. The injection tube 14 is a flexible tube connected to an injection port 132b formed by penetrating the top sheet 132, and is positioned in a rolled-up state when the folded bag 13 is folded. In addition, the bottom sheet 131 is provided with an outlet 131a that penetrates the bottom sheet 131 for discharging the material to be stirred 1a after a series of operations, including stirring the liquid material to be stirred 1a, have been completed, and is sealed by an outlet cover 131b. When discharging the material to be stirred 1a, the outlet cover 131b is removed and discharge occurs from the outlet 131a.

[0026] Furthermore, in the bag body 1 with stirring function, a lid 15 with piping attached, to which four pipes 151—an air supply pipe, an exhaust pipe, a liquid supply pipe, and a drain pipe—are connected, is attached to the ceiling sheet 132. This lid 15 with piping attached is attached to the air supply and drain port 132c formed by penetrating the ceiling sheet 132. The air supply pipe is a pipe that supplies gas for the culture operation to the foldable bag 13, and the exhaust pipe is a pipe that exhausts the gas inside the foldable bag 13. The liquid supply pipe is a pipe that supplies liquid for the culture operation to the foldable bag 13, and the drain pipe is a pipe that drains the liquid inside the foldable bag 13. All four of these pipes 151 have the same flexibility as the injection tube 14, and are positioned in a rolled-up state when the foldable bag 13 is folded. Furthermore, when the folding bag 13 is folded for transport or storage, the lid portion 15 with piping may be removed from the inlet / outlet port 132c and transported or stored separately.

[0027] Furthermore, the injection tube 14 described above may also be made detachable from the injection port 132b of the ceiling sheet 132 by having a lid structure similar to that of the lid with piping 15. In this case, when folding for transport or storage, the injection tube 14 may be removed from the injection port 132b and transported or stored separately.

[0028] Furthermore, in the bag body 1 with stirring function, three sensors 16—a pH sensor, a dissolved oxygen sensor, and a temperature sensor—are installed, penetrating the bottom sheet 131. Each sensor is installed so that the detection part faces inward towards the folded bag 13, and the connection part for the external wire faces outward towards the folded bag 13.

[0029] The bag body 1 with stirring function, shown in Figures 1 to 4, is then incorporated into the following stirring device in its expanded state.

[0030] Figure 5 shows a stirring device 100 incorporating the stirring bag 1 shown in Figures 1 to 4.

[0031] The stirring device 100 of this embodiment comprises the aforementioned stirring bag 1, a holding frame 101, and a drive mechanism 102. The holding frame 101 is a frame that holds the stirring bag 1 in an extended state when the folded bag 13 is extended. This holding frame 101 is a rectangular cylindrical frame that holds the stirring bag 1 inside. One of the four sides is provided with a windowed door 101a for visually inspecting the inside of the stirring bag 1, and it is movable by four casters 101b provided at the bottom. In addition, a panel heater for heating the stirring bag 1 is installed on the inner surface of this holding frame 101.

[0032] The drive mechanism 102 is a mechanism that applies a driving force in the three-dimensional upright direction D12 to the shape-changing section 12 of the bag body 1 with stirring function. This drive mechanism 102 is a mechanism in which a traction cable 102b connected to a power source 102a such as a motor is connected to the outer end surface 122b of the external sealed tube body 122 in the shape-changing section 12 via two relay frames 102c. When the traction cable 102b is moved by the power source 102a, the internal string-like material 121 is moved in the three-dimensional upright direction D12 via the external sealed tube body 122, and the stirring blade 11 is raised into a three-dimensional shape. Then, by repeatedly changing the amount of movement of the traction cable 102b when the power source 102a moves it, the three-dimensional shape of the stirring blade 11 is dynamically changed and stirring is performed.

[0033] In addition, in the bag with stirring function 1, the bag with stirring function 1 is installed on the holding frame 101, the discharge tube 103 is connected to the discharge port 131a of the bottom sheet 131, and the sensor wire 104 is connected to each of the three sensors 16.

[0034] Furthermore, an environmental control device 105 and a power control device 106 are installed on the outer surface of the holding frame 101, flanking the windowed door 101a on either side. The environmental control device 105 monitors the output of various sensors 16 of the bag body 1 with stirring function and controls the panel heaters of the holding frame 101 to control the internal temperature, oxygen concentration, nitrogen concentration, carbon dioxide concentration, pH value, etc. The power control device 106 controls the start-up and stirring operation of the stirring blades 11 by controlling the power source 102a of the drive mechanism 102.

[0035] The first embodiment of the stirring bag 1 and stirring device 100 described above provides the following advantages. Specifically, in this embodiment, the strip portion 111, which functions as a blade for stirring the object to be stirred 1a, is flat before being raised in the three-dimensional rising direction D12. The stirring blade 11 including the strip portion 111, the string-like material 121 of the shape-changing portion 12, and the foldable bag 13 that contains the object to be stirred 1a can be folded together with the string-like material 121 into a flat foldable sheet that encloses the flat stirring blade 11 when the object to be stirred 1a is not yet contained. As a result, the transport size can be drastically reduced and transport costs can be lowered by folding the foldable bag 13 into a foldable sheet during transport.

[0036] Furthermore, in this embodiment, since the stirring blade 11 including the strip portion 111 is enclosed in the foldable bag 13 in a flat state, it is possible to suppress the occurrence of pinholes due to friction with the foldable bag 13 during transport, compared to configurations such as those equipped with paddle-shaped stirring blades that cannot be deformed in this way.

[0037] Furthermore, in this embodiment, the stirring blade 11 can be flattened and stored in the folded bag 13 during the manufacturing of the bag body 1 with stirring function. Such storage is far easier than, for example, the work of storing the paddle-shaped stirring blade in the bag body. According to this embodiment, the ease of such storage work can also reduce the manufacturing cost of the bag body 1 with stirring function. In addition, friction of the stirring blade 11 when it is stored in the folded bag 13 can be suppressed, thus reducing the occurrence of pinholes during manufacturing.

[0038] Furthermore, according to this embodiment, the formation of a three-dimensional shape by the strip portion 111 and the stirring caused by its dynamic deformation can be performed with very simple operations such as moving the string-like material 121. Such operations can be easily performed even in microgravity environments such as outer space, and the cost of culture experiments in such environments can be reduced.

[0039] In this embodiment, the strip portion 111 is a part that is cut out in multiples from a flat plate to form a multi-layer spiral plate, and together with the central flat plate portion 112 on the central side and the annular flat plate portion 113 on the outer circumference, it forms the stirring blade 11. When the folding bag 13 is folded, the stirring blade 11 becomes a flat, single sheet and is wrapped in the folding sheet-like folding bag 13. With this configuration, by providing multiple strip portions 111 to form a multi-layer spiral plate, the contact area with the object to be stirred 1a is widened, and when the folding bag 13 is folded, the stirring blade 11 becomes a single sheet and can be effectively wrapped.

[0040] Furthermore, in this embodiment, the shape-changing section 12 forms a three-dimensional shape by separating the central flat plate section 112 and the annular flat plate section 113 of the stirring blade 11 from each other, and changes the relative distance between the pair of ends of each strip section 111 by changing the distance between them. With this configuration, the shape-changing section 12 can effectively change the relative distance between the pair of ends of each strip section 111 by using the central flat plate section 112 and the annular flat plate section 113 as guides.

[0041] Furthermore, in this embodiment, the shape-changing section 12 has a string-like object 121, and the movement of this string-like object 121 constitutes the three-dimensional shape of the stirring blade 11, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement of the string-like object 121. When the folding bag 13 is folded, the string-like object 121 is folded together with the folding bag 13. With this configuration, the three-dimensional shape can be effectively constructed and changed by the movement of the string-like object 121, and the string-like object 121 can be folded together with the folding bag 13 to easily fold it into a folding sheet.

[0042] Furthermore, in this embodiment, the folding bag 13 has a bottom sheet 131, a top sheet 132, and a rectangular tube side sheet 133. The top sheet 132 has the above-mentioned through hole 132a formed therein, and the shape-changing section 12 has an expandable and contractible external sealing tube body 122 that seals this through hole 132a. The string-like object 121 that has passed through the through hole 132a is housed inside this external sealing tube body 122, and its end is connected to the inner end surface 122a of the external sealing tube body 122 on the side opposite to the through hole 132a. The string-like object 121 is moved by moving the outer end surface 122b corresponding to this inner end surface 122a, and the amount of movement of the string-like object 121 is changed by changing the amount of movement of the outer end surface 122b. With this configuration, by providing the external sealing tube body 122, the string-like object 121 can be moved without being exposed to the outside air. This allows for effective stirring of the object to be stirred 1a, which is undesirable to come into contact with the outside air.

[0043] Furthermore, in this embodiment, the end of the strip portion 111 on the center 11a side is a movable end connected to the central flat plate portion 112, and the shape changing portion 12 has a string-like object 121 as a movable part that is connected to and moved by this movable end. With this configuration, the three-dimensional shape can be effectively formed and the shape changed by moving the end of the strip portion 111 by the movable part.

[0044] Furthermore, in this embodiment, the outermost end of the strip portion 111, separate from the movable end, is a fixed end that is fixed to the inner surface of the bottom sheet 131 of the folding bag 13 via the annular flat plate portion 113. With this configuration, the fixing of the fixed end makes the flat strip portion 111, that is, the stirring blade 11, flush with the inner surface of the bottom sheet 131 to which it is fixed, so that the stirring blade 11 can be effectively enclosed when the folding bag 13 is folded.

[0045] In this embodiment, the string-like object 121 is fixedly connected to one end of the strip portion 111 via the central flat plate portion 112, and the external sealing tube body 122 is fixedly connected to the outer surface of the folding bag 13, and neither can be removed. However, these components may also be made removable, similar to the injection tube 14 and the lid portion with piping 15 described above. The external sealing tube body 122 may be made removable from the through hole 132a of the ceiling sheet 132 by having a lid structure similar to the lid portion with piping 15. On the other hand, the string-like object 121 may be detachably connected to one end of the strip portion 111 by connecting a string-side hook provided at its end with a strip-side hook fixed to the central flat plate portion 112. In this case, when folding for transport or storage, the external sealing tube body 122 may be removed from the through hole 132a and the string-like object 121 may be removed from the strip portion 111 and transported and stored separately. At this time, the connecting structures on the strip side, such as the strip-side hooks mentioned above, are enclosed in the folding bag 13 together with the flat strip portion 111 as part of the shape-changing section 12.

[0046] As described above, if the string-like material 121, the external sealed tube body 122, and the injection tube 14 are made removable in the same way as the lid with piping 15, the following operations become possible. That is, by transporting and storing the string-like material 121, the external sealed tube body 122, the injection tube 14, and the lid with piping 15 separately from the foldable bag 13, these operations can be made more convenient. In addition, by performing the attachment work to the foldable bag 13 and the strip portion 111 in a clean room, for example, the entry of foreign matter through the through-hole 132a, the injection port 132b, and the supply / discharge port 132c in the foldable bag 13 can be suppressed. Furthermore, since the inside of the foldable bag 13 is sealed after the attachment of these components, good stirring can be performed on the material to be stirred 1a, which is undesirable to contact with the outside air.

[0047] This concludes the description of the first embodiment. Next, the second embodiment will be described. The configuration of the shape-changing section in this second embodiment differs from that of the first embodiment described above. In the following, the second embodiment will be described, focusing on the differences from this first embodiment. The stirring device is substantially the same as that of the first embodiment, so its illustration and description will be omitted. This also applies to the other embodiments described later.

[0048] Figure 6 shows a bag 2 with a stirring function according to the second embodiment. In Figure 6, components equivalent to those in the first embodiment shown in Figures 1 to 4 are denoted by the same reference numerals as in Figures 1 to 4, but only those necessary for explanation. Therefore, redundant explanations of these equivalent components will be omitted below. This also applies to other figures from Figure 7 onward, which will be referenced in the descriptions of other embodiments later.

[0049] Figure 6(A) shows a side view of the bag body 2 with stirring function of this embodiment at the stage when the internal stirring blades 11 are in a flat state, and Figure 6(B) shows a side view of the stage when the stirring blades 11 are moved in the three-dimensional upward direction D12 to a constricted state. Furthermore, Figure 6(C) shows a top view of the bag body 2 with stirring function of Figure 6(A), and Figure 6(D) shows a top view of the bag body 2 with stirring function of Figure 6(B).

[0050] In this embodiment, the shape-changing section 22 comprises a balloon 221, an air tube 222, and a weight 223. The balloon 221 is made of silicone resin and is fixed together with the weight 223 to the central flat plate section 112 of the stirring blade 11. One end of the air tube 222 is connected to the balloon 221, and the other end is connected to the air pump 202a, which serves as the drive mechanism in the stirring device. The air tube 222 is fixed along a single strip section 111 of the stirring blade 11. In contrast to the stirring blade 11, balloon 221, weight 223, and air tube 222 of this embodiment, at least one of the balloon, weight, and air tube may be integrally formed with the stirring blade using a resin material such as silicone resin so that it is enclosed within the stirring blade.

[0051] In the shape-changing section 22, when air is supplied to the balloon 221 from the air pump 202a via the air tube 222, the balloon 221 inflates. Then, using buoyancy as a driving force, the balloon 221 rises against the weight of the counterweight 223, causing the central flat plate section 112 to move in the three-dimensional upright direction D12. This movement causes the multiple strip sections 111 of the stirring blade 11 to rise, forming a three-dimensional shape. Conversely, when the balloon 221 is deflated by the air pump 202a via the air tube 222, the balloon 221 deflates. Then, the weight of the counterweight 223 causes the central flat plate section 112 to sink and be pulled down in the three-dimensional upright direction D12. This pull down deforms the three-dimensional shape toward a flat state. The shape-changing section 22 then dynamically deforms the three-dimensional shape by repeatedly supplying and exhausting air to the balloon 221, thereby making the strip sections 111 function as stirring blades for stirring the object to be stirred 1a.

[0052] Similar to the first embodiment described above, the second embodiment also significantly reduces the transport size and thus the transport cost by folding the foldable bag 13 into a foldable sheet during transport. Furthermore, since the stirring blade 11, including the strip portion 111, is enclosed in the foldable bag 13 in a flat state, the occurrence of pinholes due to friction with the foldable bag 13 during transport can be suppressed, and the ease of manufacturing also reduces manufacturing costs and the occurrence of pinholes during manufacturing, similar to the first embodiment.

[0053] Furthermore, in this embodiment, the shape-changing section 22 changes the shape of the strip section 111, i.e., the stirring blade 11, into a three-dimensional shape and performs stirring operation by supplying and venting air to and from the balloon 221 and by the weight of the weight 223. With this configuration, when folding the folding bag 13, the air is completely released from the balloon 221, which suppresses friction with the folding sheet-like folding bag 13 and further reduces the occurrence of pinholes.

[0054] This concludes the description of the second embodiment. Next, we will describe the third embodiment. In this third embodiment, the configuration of the shape-changing section also differs from that of the first embodiment described above. In the following, we will describe the third embodiment, focusing on the differences from the first embodiment.

[0055] Figure 7 shows the bag with stirring function 3 according to the third embodiment, at the stage when the stirring blades 11 inside the bag have been flattened and their three-dimensional shape has been eliminated. Figure 7(A) shows a side view of the bag with stirring function 3, and Figure 7(B) shows an enlarged view of region A11 in Figure 7(A). Figure 7(C) shows a top view of the bag with stirring function 3, and Figure 7(D) shows a perspective view of the bag with stirring function 3.

[0056] Figure 8 shows the bag with stirring function 3 shown in Figure 7, at a stage where the stirring blades 11 inside the bag have risen into a three-dimensional shape without forming a constriction. Figure 8(A) shows a side view of the bag with stirring function 3, Figure 8(B) shows a top view of the bag with stirring function 3, and Figure 8(C) shows a perspective view of the bag with stirring function 3.

[0057] Figure 9 shows the bag with stirring function 3 shown in Figure 7, specifically the stage where the stirring blades 11 inside the bag have been raised into a three-dimensional shape with a constriction. Figure 9(A) shows a side view of the bag with stirring function 3, Figure 9(B) shows a top view of the bag with stirring function 3, and Figure 9(C) shows a perspective view of the bag with stirring function 3.

[0058] In this embodiment, the shape-changing section 32 has an internal sealing tube body 321. The internal sealing tube body 321 is a tube that is connected to the inner surface of the ceiling sheet 132 so as to seal the through hole 132a formed in the ceiling sheet 132 of the folding bag 13, and is expandable and contractible in the three-dimensional rising direction D12. An example of this expandable and contractible internal sealing tube body 321 is a bellows tube or the like, similar to the external sealing tube body 122 in the first embodiment described above.

[0059] First, the outer end surface 321a-1 of the internal sealed tube body 321, opposite to the through hole 132a, is connected to the central flat plate portion 112 of the stirring blade 11, as will be described later. In other words, the outer end surface 321a-1 of the internal sealed tube body 321 is connected to the central end of each of the multiple strip portions 111 of the stirring blade 11 via this central flat plate portion 112, with the central end being the movable end.

[0060] The outer end surface 321a-1 of the internal sealed tube body 321 is the outer end surface of the lid member 321a that closes the end opening of the internal sealed tube body 321 on the opposite side of the through hole 132a, as shown in the enlarged view of Figure 7(B). A magnet 321a-2 is embedded inside this lid member 321a. On the other hand, a support part 322, formed in the shape of a dome from a magnetic material, is fixed to the central flat plate portion 112 of the stirring blade 11. The outer end surface 321a-1 of the internal sealed tube body 321 is connected to the central flat plate portion 112, that is, to the movable end of each strip portion 111, by magnetic attraction between the magnet 321a-2 of the lid member 321a and the support part 322 on the stirring blade 11 side. The support portion 322 is dome-shaped and is connected to the outer end surface 321a-1 of the internal sealed tube body 321 by magnetic attraction, with the dome apex in contact with it, allowing the support portion 322 to rotate in the circumferential direction D11. That is, the outer end surface 321a-1 of the internal sealed tube body 321 is rotatably connected to the movable end of each strip portion 111.

[0061] Furthermore, the inner end surface 321a-3 of the internal sealed tube body 321, which corresponds to the outer end surface 321a-1 of the lid member 321a, is movable in the three-dimensional upward direction D12 by receiving a driving force from the power source of the stirring device. In this embodiment, the movement of this inner end surface 321a-3 is performed via the towing shaft 302b of the stirring device, one end of which is connected to this inner end surface 321a-3. That is, the inner end surface 321a-3 is moved when the towing shaft 302b is moved in the three-dimensional upward direction D12. As a result of this movement, the internal sealed tube body 321 is compressed in the three-dimensional upward direction D12, and the central flat plate portion 112 of the stirring blade 11 connected to the outer end surface 321a-1 is moved to form a three-dimensional shape. Then, the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement of the inner end surface 321a-3 of the internal sealed tube body 321. Furthermore, when the folding bag 13 is folded, the internal sealed tube body 321 is compressed to its maximum extent and sandwiched between the bottom sheet 131 and the top sheet 132 together with the flattened stirring blade 11.

[0062] Furthermore, in this embodiment, a rotational movement section 37 is provided between the stirring blade 11 and the bottom sheet 131 of the folding bag 13 for rotating the stirring blade 11, which is moved in a three-dimensional shape and dynamically deformed, in the circumferential direction D11. The rotational movement section 37 is connected to the outer peripheral end of each of the pair of ends of the multiple strip portions 111 of the stirring blade 11, which is different from the moving end, and is the part that rotates the stirring blade 11 by receiving a rotational driving force in the circumferential direction D11. The connection with the rotating end of the strip portion 111 is made via the annular flat plate portion 113 of the stirring blade 11. This rotational movement section 37 has a Y-shaped connecting plate 371, a rotation support portion 372, and a rotation shaft portion 373. The Y-shaped connecting plate 371 is a Y-shaped plate member attached to the annular flat plate portion 113 of the stirring blade 11, as shown in Figures 8 and 9. The rotating support portion 372 is fixed to the back surface of the central joint portion of the Y-shaped connecting plate 371 and is a component in which a central bearing 372a and a magnet 372b are embedded. The rotating shaft portion 373 is a shaft member fixed to the inner surface of the bottom sheet 131 of the folding bag 13. The rotating support portion 372 is rotatably connected to the central shaft 373a of this rotating shaft portion 373 via a central bearing 372a.

[0063] This rotating section 37 rotates the stirring blade 11 by receiving rotational driving force from a rotational drive mechanism 305 located on the outside of the folding bag 13 via a magnetic connection. The rotational drive mechanism 305 is a mechanism in which a magnetic connection section 305b, in which a magnet 305b-1 is embedded, is installed at the end of the drive shaft 305a. When the drive shaft 305a is rotated in the circumferential direction D11, the rotational driving force is transmitted from the magnetic connection section 305b to the rotational support section 372 of the rotating section 37 via a magnetic connection. At this time, the dome-shaped support section 322 of the central flat plate section 112 of the stirring blade 11 is rotatably connected to the outer end surface 321a-1 of the internal sealed tube body 321 by magnetic attraction. As a result, the stirring blade 11 rotates in the circumferential direction D11 by the rotational driving force received by the rotational support section 372.

[0064] Furthermore, unlike the rotating movement unit 37 in this embodiment which receives rotational driving force via magnetic coupling, the mechanism for rotating the stirring blade 11 may be a mechanism that receives rotational driving force by directly connecting a drive shaft such as a motor.

[0065] Furthermore, by applying the following deformations to the rotating section 37, it can function as a torsional rotating section that applies torsional deformation to the three-dimensional shape of the stirring blade 11.

[0066] Figure 10 shows a modified example in which the rotating movement section 37 of the third embodiment shown in Figures 7 to 9 functions as a torsional rotating section 323. In Figure 10, components equivalent to those shown in Figures 7 to 9 are denoted by the same reference numerals as in Figures 7 to 9 only if necessary for explanation, and redundant explanations of these equivalent components are omitted below. Figure 10(A) shows a side view of the bag with stirring function 3-1 in a state where the three-dimensional shape of the stirring blade 11 has been subjected to torsional deformation, and Figure 10(B) shows a top view of the bag with stirring function 3-1 in that state. Figure 10(C) shows a perspective view of the bag with stirring function 3-1 in the state described above.

[0067] In the modified bag body 3-1 with stirring function shown in Figure 10, the shape of the support portion 322-1 that connects to the outer end surface 321a-1 of the lid member 321a at the end of the internal sealed tube body 321 differs from that of the third embodiment described above. In this modified example, the support portion 322-1 is not dome-shaped as shown in Figure 7, but is formed as a block that adheres to the outer end surface 321a-1. As a result, the central flat plate portion 112 of the stirring blade 11 is connected to the outer end surface 321a-1 of the internal sealed tube body 321 via the support portion 322-1 in a non-rotatable state.

[0068] In this modified example, the rotating movement section 37 in the third embodiment described above becomes a torsional rotating section 323 that applies torsional deformation to the three-dimensional shape of the stirring blade 11 as part of the shape changing section 32-1. The torsional rotating section 323 is the same as the rotating movement section 37 in the third embodiment. However, since the central flat plate section 112 is not rotatable relative to the outer end surface 321a-1 of the internal sealed tube body 321, the torsional rotating section 323 applies torsional deformation to the three-dimensional shape of the stirring blade 11, as shown in Figure 10.

[0069] To reiterate, in this modified example, the shape-changing section 32-1 has a torsional rotation section 323. The torsional rotation section 323 is connected to the outer peripheral end of each strip section 111 via an annular flat section 113 and receives a torsional driving force in the circumferential direction D11, causing the connected end to rotate in the circumferential direction D11 as a torsional end. This rotation changes the relative angle in the circumferential direction D11 at the pair of ends of each strip section 111, and a torsional deformation is applied to the three-dimensional shape of the stirring blade 11 in Figure 9, causing each strip section 111 to be inverted midway through, as shown in Figure 10. The repeated torsional deformation from the three-dimensional shape of Figure 9 to the torsional shape of Figure 10 and the return deformation from the torsional shape of Figure 10 to the three-dimensional shape of Figure 9 also contribute to stirring. Furthermore, similar to the rotating movement section 37 of the third embodiment, the torsional rotation section 323 has a torsional end that is separate from the moving end on the internal sealed tube body 321 side, and receives a torsional driving force via magnetic coupling from the rotational drive mechanism 305 located on the outside of the folding bag 13.

[0070] Similar to the first embodiment described above, the third embodiment and its modifications also allow for a significant reduction in transport size and thus transport costs by folding the folding bag 13 into a foldable sheet during transport. Furthermore, similar to the first embodiment, since the stirring blade 11, including the strip portion 111, is enclosed in the folding bag 13 in a flat state, the occurrence of pinholes due to friction with the folding bag 13 during transport can be suppressed.

[0071] Furthermore, in this embodiment and its modified form, the shape-changing sections 32 and 32-1 have an internally sealed tube body 321, and its outer end surface 321a-1 is connected to the central flat plate portion 112 of the stirring blade 11. The inner end surface 321a-3 of the internally sealed tube body 321 is moved to form the three-dimensional shape of the stirring blade 11, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement. Also, when the folding bag 13 is folded, the internally sealed tube body 321 is contracted to its maximum extent and sandwiched between the bottom sheet 131 and the top sheet 132 together with the flat stirring blade 11. With this configuration, by accessing the inner end surface 321a-3 of the internally sealed tube body 321 with the traction shaft 302b and moving it, the object to be stirred 1a, which is undesirable to come into contact with the outside air, can be effectively stirred without exposing it to the outside air.

[0072] Furthermore, in the modified configuration described above, the shape-changing section 32-1 has a torsional rotation section 323 that rotates the outer peripheral ends of each strip portion 111 of the stirring blade 11 in the circumferential direction D11, thereby applying torsional deformation to the three-dimensional shape of the stirring blade 11. With this configuration, the stirring effect can be enhanced by applying torsional deformation to the three-dimensional shape using the torsional rotation section 323.

[0073] Furthermore, in this modified example, the torsion rotating section 323 is connected to a torsion end that is different from the moving end of each strip section 111, and receives torsional driving force from a rotational drive mechanism 305 located on the outside of the folding bag 13 via magnetic connection. With this configuration, torsional driving force can be applied from the outside of the folding bag 13 without exposing the torsion rotating section 323 to the outside air. This makes it possible to effectively perform stirring with torsional deformation on the object to be stirred 1a, which is undesirable to come into contact with the outside air.

[0074] Furthermore, in the third embodiment described above, a rotational movement unit 37 is provided that receives a rotational driving force and rotates the three-dimensional stirring blade 11 in the circumferential direction D11. With this configuration, in addition to the dynamic deformation of the three-dimensional shape of the stirring blade 11, the stirring effect can be enhanced by rotating the three-dimensional stirring blade 11.

[0075] Furthermore, in this embodiment, the rotating movement unit 37 is connected to a rotating end of each strip portion 111 of the stirring blade 11, which is different from the moving end. The rotating movement unit 37 rotates the three-dimensional stirring blade 11 in the circumferential direction D11 by rotating this rotating end in the circumferential direction. The internal sealed tube body 321, which acts as the moving part of the shape changing unit 32, is connected to the moving end by magnetic attraction so that the moving end can rotate relative to the internal sealed tube body 321 when the rotating movement unit 37 rotates the stirring blade 11. With this configuration, the moving end can rotate relative to the moving part of the shape changing unit 32, thereby dynamically deforming the three-dimensional shape of the stirring blade 11 while effectively rotating the three-dimensional stirring blade 11.

[0076] Furthermore, in this embodiment, the rotating unit 37 receives rotational driving force from a rotational drive mechanism 305 located on the outside of the folding bag 13 via a magnetic connection. With this configuration, rotational driving force can be applied from the outside of the folding bag 13 without exposing the rotating unit 37 to the outside air. This makes it possible to effectively perform rotational stirring on the object to be stirred 1a, which is undesirable to come into contact with the outside air.

[0077] This concludes the description of the third embodiment and its modifications. Next, the fourth embodiment will be described. This fourth embodiment differs from the first embodiment in the configuration of the folding bag and the corresponding installation of the stirring blades. In the following, the fourth embodiment will be described, focusing on the differences from the first embodiment.

[0078] Figure 11 is a perspective view showing a bag 4 with a stirring function according to the fourth embodiment. Figure 11(A) shows the bag 4 with a stirring function in a stage where the stirring blades 41 inside the bag have been flattened and the three-dimensional shape has been eliminated. Figure 11(B) shows the bag 4 with a stirring function in a stage where the stirring blades 41 inside the bag have been raised into a three-dimensional shape with a constriction.

[0079] In this embodiment, the foldable bag 43 is a bag that, in the extended state in the three-dimensional upright direction D12, is approximately twice the size of the foldable bag 13 of the first embodiment and has a roughly rectangular parallelepiped shape. The stirring blade 41 inside the bag is made up of two blade portions 41a that have the same shape as the stirring blade 11 of the first embodiment, superimposed on each other, so that the inside of the foldable bag 13, which is long in the three-dimensional upright direction D12, can be stirred evenly. These two blade portions 41a are bonded together such that in the three-dimensional shape, the central flat plate portion 412 of one blade portion 41a extends toward the bottom sheet 431, and the central flat plate portion 412 of the other blade portion 41a extends toward the top sheet 432.

[0080] Furthermore, the number of wing sections 41a and the connection method can be any number or method. For example, the number of wing sections 41a may be three or more. Also, the connection method may be the connection of central flat plate sections 412 to each other, or the connection of the annular flat plate section 413 and the central flat plate section 412 via an intermediate member. Moreover, instead of gluing these connection points together, they may be connected via other connecting members with gaps between them.

[0081] A shape-changing section 42, equivalent to the shape-changing section 32 of the third embodiment described above, is connected to the central flat plate section 412 on the ceiling sheet 432 side. However, the shape-changing section 42 of this embodiment has an internal sealed tube body 421 that can be extended to approximately twice the length of the internal sealed tube body 321 of the third embodiment, depending on the size of the folding bag 43. The connection structure between this internal sealed tube body 421 and the central flat plate section 412 is the same as in the third embodiment. The inner end surface of this internal sealed tube body 421 is moved by a traction shaft 402b that is approximately twice the length of the traction shaft 302b of the third embodiment described above, thereby forming the three-dimensional shape of the stirring blade 41, and the three-dimensional shape is dynamically deformed by changing the amount of movement.

[0082] Furthermore, a rotating movement unit 47 is connected to the central flat plate portion 412 on the bottom sheet 431 side, via this central flat plate portion 412, to rotate the stirring blade 41 in the circumferential direction D11. This rotating movement unit 47 is the same as the rotating movement unit 37 of the third embodiment described above, but with the Y-shaped connecting plate 371 removed and a rotating support unit 372 with a magnet fixed to the central flat plate portion 412. This rotating movement unit 47 receives rotational driving force from an external rotation drive mechanism via magnetic coupling, and rotates the three-dimensional stirring blade 41 in the circumferential direction D11.

[0083] When the folding bag 43 is folded, the two stacked stirring blades 11 become flat, and the internal sealed tube body 421 is compressed to its maximum extent and sandwiched between the bottom sheet 431 and the top sheet 432.

[0084] Similar to the first embodiment described above, the fourth embodiment also allows for a significant reduction in transport size and thus transport costs by folding the foldable bag 43 into a foldable sheet during transport. Furthermore, similar to the first embodiment, since the stirring blade 41, including the strip portion 111, is enclosed in the foldable bag 43 in a flat state, the occurrence of pinholes due to friction with the foldable bag 43 during transport can be suppressed.

[0085] Furthermore, in this embodiment, the foldable bag 43 is roughly rectangular in shape, and the stirring blades 41 are stacked in two layers. With this configuration, the material to be stirred 1a can be contained in the large-capacity foldable bag 43, and the stacked stirring blades 41 can be raised in a three-dimensional shape to stir evenly.

[0086] This concludes the description of the fourth embodiment. Next, we will describe another example of the strip portion constituting the stirring blade.

[0087] Figure 12 is a plan view showing the first to eighth alternative examples of the strip portion constituting the agitator blade in a flat state before being raised to a three-dimensional shape. Figure 12(A) shows the strip portion 501a of the first alternative example, Figure 12(B) shows the strip portion 502a of the second alternative example, and Figure 12(C) shows the strip portion 503a of the third alternative example. Figure 12(D) shows the strip portion 504 of the fourth alternative example, and Figure 12(E) shows the strip portion 505a of the fifth alternative example. Also, Figure 12(F) shows the strip portion 506 of the sixth alternative example, Figure 12(G) shows the strip portion 507 of the seventh alternative example, and Figure 12(H) shows the strip portion 508 of the eighth alternative example.

[0088] Here, in the first alternative example in Figure 12(A), two strip sections 501a form a single stirring blade 501, and in the second alternative example in Figure 12(B), two strip sections 502a form a single stirring blade 502. Similarly, in the third alternative example in Figure 12(C), two strip sections 503a form a single stirring blade 503. Furthermore, in the fifth alternative example in Figure 12(E), four strip sections 505a form a single stirring blade 505.

[0089] In the first alternative example shown in Figure 12(A), the strip portion 501a is formed to follow a spiral that encircles the center 501b in the circumferential direction D501 for more than one full turn. Two of these strip portions 501a are formed, starting from the central flat portion 501c and extending in a double spiral pattern to the annular flat portion 501d, thereby forming a stirring blade 501 that is disc-shaped when flat.

[0090] The strip portion 502a in the second alternative example in Figure 12(B) is the same as the strip portion 501a in the first alternative example, but without the annular flat portion 501d described above, it constitutes a stirring blade 502 that is disc-shaped when flat. That is, in the second alternative example, the two strip portions 502a extend in a double spiral shape in the circumferential direction D502, starting from the central flat portion 502c and rotating around the center 502b, with the outer end being a free end.

[0091] In the third alternative example shown in Figure 12(C), the strip portion 503a is also provided in two sections, without the annular plate portion 501d described above, extending in a double spiral shape in the circumferential direction D503 from the central plate portion 503c and around the center 503b, thereby forming a stirring blade 503 that is disc-shaped when flat. However, in this third alternative example, each strip portion 503a extends along a deformed vortex that moves from the free end of the strip towards the center 503b, reversing the direction of the vortex along the way.

[0092] The strip portion 504 in the fourth alternative example in Figure 12(D) has a shape that follows a spiral that does not reach the center 504a, specifically a spiral that rotates around the center 504a in the circumferential direction D504 for less than 1.5 turns. Multiple strip portions 504 can be combined, for example, two of them, to form a stirring blade.

[0093] In the fifth alternative example shown in Figure 12(E), four strip sections 505a are provided, extending in a quadruple spiral pattern in the bending circumferential direction D505, starting from a square-shaped central flat plate section 505c and curving around the center 505b in a square shape, thereby forming a stirring blade 505 that is square-shaped when flat. Each strip section 505a extends in a continuous bent strip shape, with a straight strip bending at a right angle, until it reaches a square-frame-shaped annular flat plate section 505d. This strip section 505a in the fifth alternative example is an example of a bent strip-shaped strip section in which a straight strip bends and continues. Here, the strip section 505a in the fifth alternative example has a shape that is bent to form a corner, but the bent strip-shaped strip section is not limited to this. The curved strip portion may be such that the connection points between the straight strips are curved and bent, forming rounded corners rather than sharp angles, as long as the straight strips are connected in a continuous manner.

[0094] The strip portion 506 in the sixth alternative example in Figure 12(F) is formed to follow a C-shaped arc surrounding the center 506a. Multiple strip portions 506 can also be combined, for example, two of them, to form a stirring blade.

[0095] The strip portion 507 in the seventh alternative example in Figure 12(G) is also formed to follow a C-shaped arc surrounding the center 507a, but in this alternative example, both the inner peripheral edge 507b and the outer peripheral edge 507c have serrated edges.

[0096] The strip portion 508 in the eighth alternative example in Figure 12(H) is also formed along a C-shaped arc surrounding the center 508a, but in this alternative example, a plurality of minute through-holes 508b are arranged in the strip width direction D508a and the strip length direction D508b.

[0097] Next, we will describe the fifth and sixth embodiments, in which the stirring blades are constructed using two strip sections from the eight alternative examples shown in Figure 12 as representative examples. First, we will describe the fifth embodiment.

[0098] Figure 13 shows a bag 5 with stirring function according to the fifth embodiment. Figures 13(A) and 13(D) show the stage where the stirring blades 51 inside the bag have been flattened and their three-dimensional shape has been eliminated. Figure 13(A) is a side view, and Figure 13(D) is a top view. Figures 13(B), 13(C), 13(E), and 13(F) show the stage where the stirring blades 51 inside the bag have been raised into a three-dimensional shape. Figure 13(B) is a side view seen from the direction of arrow V11 in Figure 13(F), and Figure 13(C) is a side view seen from the direction of arrow V12 in Figure 13(F). Figure 13(E) is a top view, and Figure 13(F) is a perspective view.

[0099] In this embodiment, the stirring blade 51 in the bag body 5 with stirring function is a stirring blade 502 having a strip portion 502a as in the second alternative example in Figure 12(B). The same shape-changing portion 52 as in the third embodiment described above is connected to the central flat plate portion 512. In addition, a rotating movement portion 57, which is a modified version of the rotating movement portion 37 of the third embodiment described above, is connected to the free ends of the two strip portions 511. In this embodiment, the rotating movement portion 57 replaces the Y-shaped connecting plate 371 in the rotating movement portion 37 of the third embodiment with a single straight rod plate 571. Both ends of this straight rod plate 571 are fixed one-to-one to the free ends of the two strip portions 511, and the same mechanism portion as the other parts of the rotating movement portion 37 of the third embodiment is attached between the central back surface of the straight rod plate 571 and the bottom sheet 131 of the folding bag 13.

[0100] The inner end surface of the internal sealed tube body 521 in the shape-changing section 52 is moved in the three-dimensional upward direction D12 by the same traction shaft 502b as in the third embodiment described above, thereby forming the three-dimensional shape of the stirring blade 51. The three-dimensional shape is dynamically deformed by changing the amount of movement. The rotational movement section 57 receives rotational driving force from an external rotational drive mechanism via magnetic coupling, causing the three-dimensional stirring blade 51 to rotate in the circumferential direction D11. The stirring of the material to be stirred 1a is performed by this dynamic deformation and rotation of the three-dimensional shape of the stirring blade 51. When the folding bag 13 is folded, the flat stirring blade 51 and the internal sealed tube body 521, which has been contracted to its maximum extent, are sandwiched between the bottom sheet 131 and the top sheet 132.

[0101] Similar to the first embodiment described above, the fifth embodiment also allows for a significant reduction in transport size and thus transport costs by folding the foldable bag 13 into a foldable sheet during transport. Furthermore, similar to the first embodiment, since the stirring blade 51, including the strip portion 511, is enclosed in the foldable bag 13 in a flat state, the occurrence of pinholes due to friction with the foldable bag 13 during transport can be suppressed.

[0102] This concludes the description of the fifth embodiment. Next, we will describe the sixth embodiment.

[0103] Figure 14 shows a bag 6 with a stirring function according to the sixth embodiment. Figures 14(A) and 14(D) show the stage in which the stirring blades 61 inside the bag have been flattened and their three-dimensional shape has been eliminated. Figure 14(A) is a side view, and Figure 14(D) is a top view. Figures 14(B), 14(C), 14(E), and 14(F) show the stage in which the stirring blades 61 inside the bag have been raised into a three-dimensional shape. Figure 14(B) is a side view seen from the direction of arrow V13 in Figure 14(F), and Figure 14(C) is a side view seen from the direction of arrow V14 in Figure 14(F). Figure 14(E) is a top view, and Figure 14(F) is a perspective view.

[0104] In this embodiment, the stirring blade 61 in the bag body 6 with stirring function is formed by combining two strip sections 506 from the sixth alternative example in Figure 12(F) as strip sections 611 in this embodiment. This combination is achieved by connecting one end of each of the two strip sections 611 to the ceiling sheet 132 side of the folding bag 13 with a single ceiling-side straight bar plate 612. One end of each of the two strip sections 611 is fixed one-to-one to both ends of the ceiling-side straight bar plate 612. A shape-changing section 62, the same as the shape-changing section 32 of the third embodiment described above, is connected to the center of the upper surface of the ceiling-side straight bar plate 612. In addition, a rotating moving section 67, which is a modified version of the rotating moving section 37 of the third embodiment described above, is connected to the bottom sheet 131 side ends of the two strip sections 611. The rotating movement section 67 of this embodiment replaces the Y-shaped connecting plate 371 in the rotating movement section 37 of the third embodiment with a single bottom straight bar plate 671. Both ends of this bottom straight bar plate 671 are fixed one-to-one to the ends of the two strip plate sections 611 on the bottom sheet 131 side. The same mechanism as the other parts of the rotating movement section 37 of the third embodiment is attached between the central back surface of the bottom straight bar plate 671 and the bottom sheet 131 of the folding bag 13.

[0105] The inner end surface of the internal sealed tube body 621 in the shape-changing section 62 is moved in the three-dimensional upward direction D12 by the same traction shaft 602b as in the third embodiment described above, thereby forming the three-dimensional shape of the stirring blade 61. The three-dimensional shape is dynamically deformed by changing the amount of movement. The rotating section 67 receives rotational driving force from an external rotational drive mechanism via magnetic coupling, causing the three-dimensional stirring blade 61 to rotate in the circumferential direction D11. The stirring of the material to be stirred 1a is performed by this dynamic deformation and rotation of the three-dimensional shape of the stirring blade 61. When the folding bag 13 is folded, the flat stirring blade 61 and the internal sealed tube body 621, which has been contracted to its maximum extent, are sandwiched between the bottom sheet 131 and the top sheet 132.

[0106] Similar to the first embodiment described above, the sixth embodiment also allows for a significant reduction in transport size and thus transport costs by folding the foldable bag 13 into a foldable sheet during transport. Furthermore, similar to the first embodiment, since the stirring blade 61, including the strip portion 611, is enclosed in the foldable bag 13 in a flat state, the occurrence of pinholes due to friction with the foldable bag 13 during transport can be suppressed.

[0107] Furthermore, the first to sixth embodiments, various modifications, and various alternative examples described above are merely examples of bags with stirring functions and stirring devices, and the bags with stirring functions and stirring devices are not limited to these embodiments. In other words, the bags with stirring functions and stirring devices can be used with appropriate modifications according to their respective applications.

[0108] For example, in the first to sixth embodiments, various modifications, and various alternative examples described above, the stirring device 100 specifically shown in Figure 5 is exemplified as an example of a stirring device. However, the stirring device is not limited to this. The stirring device is not limited to any specific configuration of each part, as long as it comprises a bag with a stirring function, a holding frame that holds the bag with the stirring function in an unfolded state, and a drive mechanism that applies driving force to the shape changing part.

[0109] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, the following examples are given as examples of bags with stirring functions. Specifically, as an example of a bag with stirring functions, bags with stirring functions 1,...,6 are provided, equipped with stirring blades 11 having a plurality of strip portions 111 and stirring blades 51,61 having a pair of strip portions 501a,...,504,506,...,508,511,611. Also, as an example of a stirring device, a stirring device 100 equipped with such bags with stirring functions 1,...,6 is provided. However, the bags with stirring functions and stirring devices are not limited to these, and for example, they may be equipped with only one strip portion, or with a number of strip portions different from the number provided as examples.

[0110] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, a folding bag 13 having a substantially cubic shape when extended and a folding bag 43 having a rectangular parallelepiped shape are exemplified as examples of folding bags. However, a folding bag can be any shape, such as a triangular prism, a pentagonal prism, or any other polygonal prism shape, or a cylindrical shape, as long as it is a bag that can be folded into a flat folding sheet.

[0111] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, one example of how the folding bag can be folded is shown in which the rectangular tube side sheet 133 is folded inward into the folding bag 13 and sandwiched between the bottom sheet 131 and the top sheet 132. However, the folding method of the folding bag is not limited to this, and may be any other method, such as one in which the side sheet extends outward when folded.

[0112] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, examples of shape-changing parts include shape-changing parts 12, ..., 62 that deform the stirring blades 11, ..., 61 using string-like objects 121, balloons 221, and internal sealed tube bodies 321, ..., 621. However, the shape-changing parts are not limited to these, and any mechanism can be adopted. However, as mentioned above, using string-like objects 121 makes it easier to fold together with the folding bag 13, and using balloons 221 makes it easier to reduce friction with the folding bag 13. Also, as mentioned above, using internal sealed tube bodies 321, ..., 621 allows for effective stirring without exposing the stirring target 1a to the outside air.

[0113] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, a bag body with a stirring function 1,...,6 and a stirring device 100 are exemplified as examples of a bag body with a stirring function and a stirring device, in which one end of the strip portion 111,...,611 is moved to the ceiling side of the folded bag 13,43 to form a three-dimensional shape, and stirring is performed by changing the amount of movement. However, the bag body with a stirring function and the stirring device are not limited to these. For example, the strip portion may be arranged so that the three-dimensional shape is upside down compared to these examples, and one end may be moved to the bottom side of the folded bag. Alternatively, the strip portion may be arranged so that the three-dimensional shape is horizontal between the sides of the folded bag, and one end may be moved to one side.

[0114] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, a shape-changing section 12,...,62 is provided as an example of a shape-changing section, which is driven by a mechanism outside the stirring bag 1,...,6. However, the shape-changing section is not limited to this, and may be driven by a manual operation by an operator.

[0115] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, a shape-changing section 12, ..., 62 is provided as an example of a shape-changing section, which is sealed and built inside the bag with a stirring function. However, the shape-changing section is not limited to these, and if the stirring operation on the object to be stirred is performed in a clean environment such as a clean room, an open opening may be provided in the foldable bag, and stirring may be performed by moving the internal strip through the opening. Such alternative shape-changing sections do not require the expansion and contraction function of the external sealed tube or internal sealed tube described above, and one example is a non-expandable shaft or the like is connected to the strip through an open opening from the outside of the foldable bag, and stirring is performed by moving the strip. An example of such a shaft mounting method is the following method using a ball bush, which is a rolling guide member for the shaft or the like. In other words, one example of such a configuration is to provide a bag with a stirring function that has a connection part that can be connected to a ball bush in an open opening, and to connect a non-extendable shaft or the like through the ball bush from the outside of the foldable bag to the strip portion.

[0116] Furthermore, in the first to sixth embodiments, various modifications, and various alternative examples described above, strip portions 111, ..., 611 are exemplified as examples of strip portions in which the three-dimensional shape configuration and its dynamic deformation are achieved solely by external forces from the shape-changing portions 12, ..., 62. However, the strip portion is not limited to this, and for example, the strip portion may be formed of a spring material, and the dynamic deformation of the three-dimensional shape may be achieved by utilizing the restoration by the spring force of the strip portion itself. [Explanation of Symbols]

[0117] 1,2,3,3-1,4,5,6 Bag with stirring function 1a Items to be stirred 11,41,51,61,501,502,503,505 Stirring blade 11a,501b,502b,503b,504a,505b,506a,507a,508a center 12,22,32,32-1,42,52,62 Shape change section 13,43 Folding Bag 14 Infusion tube 15. Cover with piping 16 sensors 37, 47, 57, 67 Rotating moving parts 41a Wing section 100 Stirring device 101 Retaining frame 101a Door with window 101b Caster 102 Drive mechanism 102a Power source 102b Towing Cable 102c relay frame 103 Discharge tube 104 Sensor wire 105 Environmental control system 106 Power System Control Unit 111,501a,502a,503a,504,505a,506,507,508,511,611 Band part 111a Constriction 112,412,501c,502c,503c,505c,512 Center plate part 113,413,501d,505d Annular plate section 121 String-like objects 122 External sealed tube body 122a,321a-3 Inner end surface 122b,321a-1 Outer end surface 131,431 Bottom sheet 131a Outlet 131b Discharge port cover 132,432 Ceiling sheet 132a Through hole 132b Inlet 132c Supply / discharge port 133 Square tube side sheet 151 Piping 202a Air pump 221 Balloons 222 Air Tube 223 Weight 302b, 402b, 502b, 602b Towing shaft 305 Rotary drive mechanism 305a Drive shaft 305b Magnetic connection 305b-1, 321a-2, 372b Magnets 321, 421, 521, 621 Internally sealed tubular body 321a Lid member 322,322-1 Support part 323 Twisting rotation part 371 Y-shaped connecting plate 372 Rotating support part 372a Central bearing 373 Rotating shaft section 373a central axis 507b Inner periphery 507c Outer edge 508b Micro through hole 571 Straight bar board 612 Ceiling-side straight bar plate 671 Bottom straight bar plate D11,D501,D502,D503,D504 Circumferential direction D12 Three-dimensional rising direction D505 Circumferential bending direction D508a Band width direction D508b Band length direction

Claims

1. A strip portion is cut from a flexible flat plate so as to extend in a curved strip shape, or in a bent strip shape where a straight strip is continuously curved, along a circular arc or spiral that surrounds a predetermined center for more than half a circumference, A shape-changing unit that, upon receiving a predetermined driving force, raises the strip portion to form a three-dimensional shape by separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane containing the arc or the spiral, and dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends, while also allowing return to the flat state before rising and re-risen, thereby causing the strip portion to function as a blade for stirring the material to be stirred. The bag comprises the strip portion, at least one portion of the shape-changing portion, and a bag for containing the object to be stirred, wherein when the object to be stirred is not yet contained, the bag can be folded together with the shape-changing portion into a flat, foldable sheet that encloses the flat strip portion. The bag body with stirring function is characterized in that the shape-changing portion has a string-like object connected to one end of the strip portion, the string-like object moves in the three-dimensional rising direction in response to the driving force to form the three-dimensional shape, the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement, and when the folding bag is folded, the string-like object is folded together with the folding bag.

2. The folding bag comprises a bottom sheet and a top sheet that sandwich the flat strip portion between them when folded, and a side sheet that connects the two and becomes cylindrical when extended, and folds to a shape that conforms to the bottom sheet and the top sheet when folded. The target sheet among the bottom sheet, the ceiling sheet, and the side sheet has through holes formed therein to allow the string-like object, which serves as the shape-changing part, to pass through when it moves. The bag with stirring function according to claim 1, wherein the shape-changing portion has an external sealing tube body that is connected to the outer surface of the target sheet so as to seal the through hole and is expandable and contractible in the three-dimensional rising direction, the string-like object that has passed through the through hole is housed inside the external sealing tube body, and the end of the string-like object is connected to the inner end surface of the external sealing tube body opposite to the through hole, the string-like object moves in the three-dimensional rising direction when the outer end surface corresponding to the inner end surface is moved, and the amount of movement of the string-like object is changed when the amount of movement of the outer end surface is changed.

3. A strip portion cut from a flexible flat plate so as to extend in the shape of a curved strip or a continuous bent strip formed by a straight strip curving along an arc or spiral that surrounds a predetermined center for more than half a circumference, A shape-changing unit that, upon receiving a predetermined driving force, raises the strip portion to form a three-dimensional shape by separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane containing the arc or the spiral, and dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends, while also allowing return to the flat state before rising and re-risen, thereby causing the strip portion to function as a blade for stirring the material to be stirred. The bag comprises the strip portion, at least one portion of the shape-changing portion, and a bag for containing the object to be stirred, wherein when the object to be stirred is not yet contained, the bag can be folded together with the shape-changing portion into a flat, foldable sheet that encloses the flat strip portion. The shape-changing section has a balloon and a weight connected to one end of the strip section, and the balloon receives buoyancy from the supply of air to the balloon as the driving force, causing the balloon to move in the three-dimensional upright direction to form the three-dimensional shape, and the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement by repeatedly supplying and venting air, and when the folding bag is folded, the airless balloon is folded together with the folding bag, characterized in that the bag has a stirring function.

4. A strip portion cut from a flexible flat plate so as to extend in the shape of a curved strip or a continuous bent strip in the shape of a straight strip that curves along an arc or spiral that surrounds a predetermined center for more than half a circumference, A shape-changing unit that, upon receiving a predetermined driving force, raises the strip portion to form a three-dimensional shape by separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane containing the arc or the spiral, and dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends, while also allowing return to the flat state before rising and re-risen, thereby causing the strip portion to function as a blade for stirring the material to be stirred. The bag comprises the strip portion, at least one portion of the shape-changing portion, and a bag for containing the object to be stirred, wherein when the object to be stirred is not yet contained, the bag can be folded together with the shape-changing portion into a flat, foldable sheet that encloses the flat strip portion. The folding bag comprises a bottom sheet and a top sheet that sandwich the flat strip portion between them when folded, and a side sheet that connects the two and becomes cylindrical when extended, and folds to a shape that conforms to the bottom sheet and the top sheet when folded. A through hole is formed in any of the target sheets, including the bottom sheet, the ceiling sheet, and the side sheet. The shape-changing portion has an internal sealing tube body that is connected to the inner surface of the target sheet so as to seal the through hole and is expandable and contractible in the three-dimensional rising direction, the outer end surface of the internal sealing tube body opposite to the through hole is connected to one end of the strip portion, the inner end surface of the internal sealing tube body corresponding to the outer end surface is moved in the three-dimensional rising direction so as the internal sealing tube body is contracted in the three-dimensional rising direction to form the three-dimensional shape, the three-dimensional shape is dynamically deformed by repeatedly changing the amount of movement of the inner end surface, and when the folding bag is folded, the internal sealing tube body is contracted to its maximum extent and sandwiched between the bottom sheet and the top sheet together with the flat strip portion, characterized in that the bag has a stirring function.

5. A strip portion cut from a flexible flat plate so as to extend in the shape of a curved strip or a continuous bent strip in the shape of a straight strip that curves along an arc or spiral that surrounds a predetermined center for more than half a circumference, A shape-changing unit that, upon receiving a predetermined driving force, raises the strip portion to form a three-dimensional shape by separating a pair of ends of the strip portion from each other in a three-dimensional rising direction perpendicular to the plane containing the arc or the spiral, and dynamically deforms the three-dimensional shape by repeatedly changing at least one of the relative distance in the three-dimensional rising direction and the relative angle in the circumferential direction of the pair of ends, while also allowing return to the flat state before rising and re-risen, thereby causing the strip portion to function as a blade for stirring the material to be stirred. The bag comprises the strip portion, at least one portion of the shape-changing portion, and a bag for containing the object to be stirred, wherein when the object to be stirred is not yet contained, the bag can be folded together with the shape-changing portion into a flat, foldable sheet that encloses the flat strip portion. Of the pair of ends in the strip portion, one is a movable end that moves in the three-dimensional rising direction. The bag body with stirring function is characterized in that the shape-changing portion has a movable portion that is connected to the movable end and moved in the three-dimensional rising direction.

6. The bag body with stirring function according to claim 5, characterized in that one of the pair of ends in the strip portion is a fixed end that is fixed to the inner surface of the folded bag, with the other end being separate from the movable end.

7. The bag with stirring function according to claim 5, further comprising a rotational moving part connected to at least one of a pair of ends of the strip portion and receiving the rotational driving force in the circumferential direction to rotate the three-dimensional strip portion in the circumferential direction.

8. The rotating moving part is connected to the other end of the pair of ends of the strip portion, which is not the moving end, as the rotating end, and by rotating the rotating end in the circumferential direction, the three-dimensional strip portion is rotated in the circumferential direction. The bag body with stirring function according to claim 7, characterized in that the movable part in the shape-changing part is connected to the movable end by magnetic attraction such that the movable end can rotate relative to the movable part when the rotating movable part rotates the three-dimensional strip part.

9. A bag with stirring function according to any one of claims 1 to 8, The bag with stirring function is held by a holding frame that holds the folded bag in an extended state, A drive mechanism that applies the driving force to the shape-changing portion, A stirring device characterized by being equipped with the following features.

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