Packaging

Abstract

To provide a package that can be opened from at least four different positions. [Solution] The package (1) includes a packaging bag (10) made of a resin film and a Petri dish assembly (20) contained within the packaging bag. The Petri dish assembly is formed by stacking two or more Petri dishes (21), each including a Petri dish body (22) containing a culture medium (24). Two opposing side edge portions (11, 12) of the packaging bag are formed with seal portions (11s, 12s) formed by overlapping and welding resin films. In the package, the Petri dish assembly is contained within the packaging bag so that the two side edge portions are arranged along the stacking direction of the Petri dishes. In both a first state of the package in which the stacking direction is arranged along the direction of gravity and a second state of the package in which the stacking direction in the first state is inverted upside down, notches (16t, 17t, 16b, 17b) are formed in the two side edge portions so that the notches are located above the position of the Petri dish assembly in the direction of gravity.

Description

[Technical Field]

[0001] The present invention relates to a package. [Background technology]

[0002] BACKGROUND ART A package in which a plurality of petri dishes containing agar media for microorganism testing or the like are stacked and housed in a packaging bag is known (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-282240 Summary of the Invention [Problem to be solved by the invention]

[0004] In a package in which a stack of multiple Petri dishes is housed in a packaging bag, the Petri dishes may be removed one by one from the package. Alternatively, the Petri dish stack may be removed from the package, and then the Petri dishes may be removed one by one from the stack. In this case, if one attempts to remove the Petri dishes in an orientation that is convenient for use in, for example, a microbiological test, it may be necessary to open the package from different positions when removing the Petri dishes from the package and when removing the Petri dish stack from the package.

[0005] The present invention aims to provide a package that can be opened from at least four different positions. [Means for solving the problem]

[0006] The package of the present invention includes a packaging bag made of a resin film and a Petri dish assembly contained within the packaging bag. The Petri dish assembly is formed by stacking two or more Petri dishes, each containing a Petri dish body containing a culture medium. Each of two opposing side edges of the packaging bag has a seal formed by overlapping and welding resin films. In the package, the Petri dish assembly is contained within the packaging bag so that the two side edges are arranged along the stacking direction of the Petri dishes. In both a first state of the package in which the stacking direction is arranged along the direction of gravity and a second state of the package in which the stacking direction in the first state is inverted, notches are formed in the two side edges so that the notches are positioned above the position of the Petri dish assembly in the direction of gravity. [Effects of the Invention]

[0007] According to the present invention, the package can be opened from at least four different positions. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of a package according to an embodiment of the present invention; [Figure 2] FIG. 1 is a perspective view showing an example of a petri dish. [Figure 3] 10A and 10B are schematic diagrams showing an example of a method for opening a package. [Figure 4] FIG. 10 is a schematic diagram showing another example of a method for opening the package. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same components are designated by the same reference numerals, and detailed descriptions thereof may not be repeated. In order to facilitate understanding of the invention, the dimensions of each component in the drawings may be changed from the actual dimensions.

[0010] When terms indicating relative positional relationships such as "side edge," "upper edge," and "lower edge" are used in this specification, these terms are used to indicate the relative positional relationship in one state, and the relative positional relationship can be reversed or rotated to any angle depending on the direction in which the packaging body is placed (for example, by turning the entire packaging body upside down).

[0011] (packaging) Fig. 1 is a schematic diagram of a package according to an embodiment of the present invention, and Fig. 2 is a perspective view of an example of a petri dish.

[0012] As shown in Fig. 1, the packaging body 1 of this embodiment includes a packaging bag 10 formed of a resin film and a petri dish assembly 20 contained within the packaging bag 10. The petri dish assembly 20 is formed by stacking two or more petri dishes 21. The packaging body 1 is preferably sealed with the petri dish assembly 20 contained within the packaging bag 10. The inside of the packaging bag 10 may be evacuated.

[0013] The packaging body 1 may contain the Petri dish assembly 20 in a movable manner within the packaging bag 10. For example, the packaging body 1 may contain the Petri dish assembly 20 in a movable manner within the packaging bag 10 in the stacking direction Y of the Petri dishes 21 ( FIG. 1 ). For example, the Petri dish assembly 20 may be movable within the packaging bag 10 in the stacking direction Y due to gravity.

[0014] As shown in FIG. 2, a petri dish 21 includes a petri dish body 22 and may further include a lid 23 for the petri dish body 22. A culture medium 24 is accommodated in the petri dish body 22. The culture medium 24 is not particularly limited and may be, for example, an agar medium. A specimen (microorganism) is inoculated into the culture medium 24 in a microbiological test or the like. The petri dish 21 containing the culture medium 24 inoculated with the specimen is placed in an incubator or the like set at a temperature and humidity suitable for the growth of the specimen, whereby the specimen is cultured. The lid 23 covers the petri dish body 22 so as to protect the culture medium 24.

[0015] The Petri dish body 22 and the lid 23 may each independently be made of a plastic material using a resin such as polystyrene, polycarbonate, or a fluororesin such as polytetrafluoroethylene, or may be made of glass such as borosilicate glass, or may be made of stainless steel. The Petri dish body 22 and the lid 23 are preferably made of a transparent material.

[0016] The number of stacked petri dishes 21 in the petri dish assembly 20 is not limited to two or more, and may be three or more, five or more, ten or more, 25 or less, or 20 or less.

[0017] The Petri dish assembly 20 may be formed by stacking Petri dishes 21 each including a Petri dish body 22 and a lid 23, or by stacking Petri dishes 21 each including a Petri dish body 22 but not a lid 23, or by mixing these. For example, at least one of two or more Petri dishes 21 included in the Petri dish assembly 20 may include a Petri dish body 22 and a lid 23. The orientations of the Petri dishes 21 in the Petri dish assembly 20 may be the same or different, but in the Petri dish assembly 20 shown in Figure 1, the Petri dishes 21 are stacked in the same orientation, with the Petri dish bodies 22 open upward.

[0018] The packaging bag 10 is formed of a resin film. Any known resin film may be used as the resin film. Examples of resins used for the resin film include polyolefins such as polyethylene and polypropylene, polyamide resins such as nylon, polyvinyl alcohol, ethylene-vinyl alcohol copolymers, acrylic resins, cellulose-based resins such as triacetyl cellulose, and polyesters such as polyethylene terephthalate and polybutylene terephthalate. The resin film may be a biaxially stretched film or a uniaxially stretched film. The resin film may have a single-layer structure or a multilayer structure. A resin film having a multilayer structure may have layers formed from different resins laminated together; for example, a layer formed from a polyolefin and a layer formed from a polyamide resin may be laminated together.

[0019] Sealed portions 11s, 12s are formed on two opposing side edge portions 11, 12 of the packaging bag 10, respectively, by overlapping and welding together resin films that form the packaging bag (FIG. 1). In the packaging body 1, the two side edge portions 11, 12 face each other, sandwiching the Petri dish assembly 20 contained in the packaging bag 10 therebetween. The sealed portions 11s, 12s may be formed along the entire length of the side edge portions 11, 12, respectively, or may be formed in an area excluding at least one of the upper and lower ends of the side edge portions 11, 12 (the upper and lower ends in the stacking direction Y in FIG. 1). The sealed portions 11s, 12s may be formed to include the edges of the side edge portions 11, 12, or may not be formed on the edges of the side edge portions 11, 12 but may be formed in a position inward (toward the packaging bag 10) from the edges.

[0020] Packaging bag 10 has an upper edge 13 connecting the upper ends of side edges 11, 12, and a lower edge 14 connecting the lower ends of side edges 11, 12. The shape of packaging bag 10 shown in FIG. 1 in a plan view is a rectangle with the side edges 11, 12, upper edge 13, and lower edge 14 as the four sides, but the shape of packaging bag 10 in a plan view is not limited thereto and may be a shape other than a rectangle. In packaging bag 10 shown in FIG. 1 , upper edge 13 is disposed on the opening side (lid 23 side) of Petri dish 21 of Petri dish assembly 20, and lower edge 14 is disposed on the bottom side (Petri dish body 22 side) of Petri dish 21. It is preferable that at least one of upper edge 13 and lower edge 14 has a seal formed thereon, and seal portions may be formed on both upper edge 13 and lower edge 14. These sealed portions may be formed to include the edges of the upper edge 13 and the lower edge 14, or may not be formed on the edges of the upper edge 13 and the lower edge 14 but may be formed at a position inside (towards the packaging bag 10) these edges. The upper edge 13 or the lower edge 14 where no sealed portion is formed may be a folded portion formed by, for example, folding a resin film in half.

[0021] 1, in the packaging body 1, a petri dish assembly 20 is contained within the packaging bag 10 so that the side edge portions 11, 12 of the packaging bag 10 are arranged along the stacking direction Y of the petri dishes 21. The side edge portions 11, 12 along the stacking direction Y mean that the two side edge portions 11, 12 extend parallel to the stacking direction Y so that the petri dish assembly 20 is contained in the internal space of the packaging bag 10 formed between the side edge portions 11, 12. Therefore, the side edge portions 11, 12 may extend parallel to the stacking direction Y, or may extend parallel to but not parallel to the stacking direction Y.

[0022] As shown in Fig. 1, in a first state of the packaging body 1 in which the stacking direction Y is aligned with the direction of gravity, notches 16t and 17t are formed on the side edges 11 and 12 so that they are positioned above the position of the Petri dish assembly 20 in the direction of gravity (upper side in Fig. 1). In addition, in a second state of the packaging body 1 in which the stacking direction Y of the first state is turned upside down, notches 16b and 17b are formed on the side edges 11 and 12 so that they are positioned above the position of the Petri dish assembly 20 in the direction of gravity. When the state of arrangement of the packaging body 1 shown in Fig. 1 is defined as the first state, the second state is a state in which the packaging body 1 shown in Fig. 1 is turned upside down.

[0023] In a packaging body 1 in which a Petri dish assembly 20 is movably accommodated within a packaging bag 10, when the stacking direction Y is arranged along the direction of gravity, the Petri dish assembly 20 moves downward in the direction of gravity within the packaging bag 10. Therefore, in a first state ( FIG. 1 ) of the packaging body 1 in which the Petri dish assembly 20 is movably accommodated within the packaging bag 10, it is sufficient that the notches 16t, 17t are positioned on the side edges 11, 12 at positions above the position of the Petri dish assembly 20 when the Petri dish assembly 20 has moved toward the lower edge 14 of the packaging bag 10, which is the downward side in the direction of gravity. In this case, in the packaging body 1 in the first state, the notches 16b, 17b, which are positioned below the notches 16t, 17t, may be positioned at the position of the Petri dish assembly 20 on the side edges 11, 12.

[0024] Furthermore, in the second state of the packaging body 1 in which the Petri dish assembly 20 is movably accommodated within the packaging bag 10 (a state in which the packaging body 1 in FIG. 1 is turned upside down), when the Petri dish assembly 20 has moved toward the upper edge 13 of the packaging bag 10, which is the lower side in the direction of gravity, notches 16b, 17b may be located at positions on the side edges 11, 12 above the position of the Petri dish assembly 20. In this case, in the packaging body 1 in the second state, notches 16t, 17t located below notches 16b, 17b may be located at the position of the Petri dish assembly 20 on the side edges 11, 12.

[0025] Alternatively, in the first state of the packaging body 1, as shown in Fig. 1, notches 16t, 17t, 16b, and 17b may be formed in the side edge portions 11 and 12 at positions above and below the position of the Petri dish assembly 20 in the direction of gravity. More specifically, notches 16t and 16b may be formed in the side edge portion 11 at positions above and below the position of the Petri dish assembly 20 in the direction of gravity. Notches 16b and 17b may be formed in the side edge portion 12 at positions above and below the position of the Petri dish assembly 20 in the direction of gravity.

[0026] The above-mentioned "upper position" refers to a position above the position where the top surface of the Petri dish assembly 20 intersects with the side edges 11, 12 when extended in the planar direction of the Petri dish 21 (the direction in which the opening of the Petri dish 21 widens) in the stacking direction Y of the side edges 11, 12. The above-mentioned "lower position" refers to a position below the position where the bottom surface of the Petri dish assembly 20 intersects with the side edges 11, 12 when extended in the planar direction of the Petri dish 21 in the stacking direction Y of the side edges 11, 12. The above-mentioned positions of the side edges 11, 12 of the Petri dish assembly 20 refer to positions between two positions where the top and bottom surfaces of the Petri dish assembly 20 intersect with the side edges 11, 12 when extended in the planar direction of the Petri dish 21.

[0027] As described above, the packaging body 1 shown in FIG. 1 has two notches (16t, 16b and 17t, 17b) formed on each of the two side edges 11, 12, so that the packaging body 1 has a total of four notches 16t, 16b, 17t, 17b.

[0028] Notches 16t, 17t, 16b, and 17b are opening notches for opening the packaging bag 10 of the packaging body 1. By tearing the packaging bag 10 at the positions of notches 16t, 17t, 16b, and 17b, an opening can be formed for removing the petri dish 21 or the petri dish assembly 20 contained in the packaging bag 10. Since notches 16t, 17t, 16b, and 17b are formed in a total of four places on the side edge portions 11 and 12 of the packaging body 1, the packaging bag 10 can be opened from any of these four notches 16t, 17t, 16b, and 17b.

[0029] As described above, notches 16t, 17t and notches 16b, 17b are formed at positions on the side edges 11, 12 above the position of the Petri dish assembly 20 in the direction of gravity in the first and second states of the packaging body 1. Therefore, whether the packaging body 1 is in the first state or the second state, when the packaging bag 10 is opened from the notch formed on one of the side edges 11, 12 toward the other side edge 11, 12, the packaging bag 10 can be torn at a position that does not overlap with the Petri dish assembly 20. As a result, when opening the packaging bag 10, the packaging bag 10 can be torn without interfering with the Petri dish assembly 20, and therefore the packaging bag 10 can be easily opened.

[0030] The notches 16t, 17t, 16b, and 17b may be formed in the side edges 11 and 12 as described above. When the seal portions 11s and 12s include the edges of the side edges 11 and 12, the notches are formed in the seal portions 11s and 12s. When the seal portions 11s and 12s do not include the edges of the side edges 11 and 12, the notches may be formed in positions where the seal portions 11s and 12s are not formed, or may be formed to include both the positions and the positions where the seal portions 11s and 12s are formed.

[0031] Notches 16t, 17t of side edges 11, 12 that are located at an upper position in the direction of gravity in the first state may be formed at the same height position or at different height positions in the stacking direction Y. Notches 16b, 17b of side edges 11, 12 that are located at an upper position in the direction of gravity in the second state may be formed at the same height position or at different height positions in the stacking direction Y.

[0032] For example, notches 16t, 17t may each independently be located within a range of 5 to 100 mm, 10 to 80 mm, or 20 to 60 mm from upper edge 13 of packaging bag 10. For example, notches 16b, 17b may each independently be located within a range of 5 to 100 mm, 10 to 80 mm, or 15 to 50 mm from lower edge 14 of packaging bag 10.

[0033] In the stacking direction Y, the distance between notch 16t and notch 16b at side edge 11 may be greater than, less than, or the same as the length of the Petri dish assembly 20, but is preferably greater. In the stacking direction Y, the distance between notch 17t and notch 17b at side edge 12 may be greater than, less than, or the same as the length of the Petri dish assembly 20, but is preferably greater.

[0034] The shapes of the notches 16t, 17t, 16b, and 17b are not particularly limited and may be, for example, cutouts or notches, which may be the same shape or different shapes. When the notches are notches, the shape of the notches is not particularly limited and may be polygonal, such as triangular or pentagonal, or may be semicircular or arcuate.

[0035] The size of the notches 16t, 17t, 16b, and 17b is not particularly limited. When the notches are cutouts, the length of the cutouts may be, for example, 1 to 10 mm, or 2 to 8 mm. When the notches are notches, the notches may be formed so that the linear distance from the edge of the side edge portions 11 and 12 to the furthest cutout portion of the notch is, for example, 1 to 10 mm or 2 to 8 mm.

[0036] Packaging bag 10 may be formed by overlapping two sheets of resin film and welding their edges to form side edges 11, 12 having seal portions 11s, 12s, and upper edge 13 and lower edge 14 having seal portions. Alternatively, packaging bag 10 may be formed by folding a single sheet of resin film in half or the like so that the film overlaps, using the edge formed by folding as lower edge 14 (or upper edge 13), and welding the edges other than the folded edge to form side edges 11, 12 having seal portions 11s, 12s, and upper edge 13 (or lower edge 14) having a seal portion.

[0037] The packaging body 1 can be produced by placing the Petri dish assembly 20 in a packaging bag 10 with at least one of the upper edge 13 and the lower edge 14 open, evacuating the internal space of the packaging bag 10 as necessary, and then welding the opening of at least one of the upper edge 13 and the lower edge 14 to form a seal. The notches 16t, 17t, 16b, and 17b may be formed in the side edge portions 11 and 12 of the packaging bag 10 in advance, or may be formed in the side edge portions 11 and 12 after the Petri dish assembly 20 has been placed in the packaging bag 10. It is preferable that the packaging bag 10 and the Petri dish assembly 20 used in producing the packaging body 1 are both sterilized.

[0038] (Method of removing a petri dish or a petri dish assembly from a package) Fig. 3 is a schematic diagram showing an example of a method for opening a package, and Fig. 4 is a schematic diagram showing another example of a method for opening a package.

[0039] As described above, the packaging body 1 has four notches 16t, 17t, 16b, and 17b. Therefore, by opening the packaging bag 10 from any of the four notches 16t, 17t, 16b, and 17b, an opening for removing the Petri dish 21 or the Petri dish assembly 20 can be formed. The notches 16t, 17t and the notches 16b, 17b are respectively formed at positions on the side edge portions 11 and 12 above the position of the Petri dish assembly 20 in the direction of gravity in the first and second states of the packaging body 1, so that the packaging bag 10 can be torn without interfering with the Petri dish assembly 20.

[0040] As will be described later, the package 1 may be opened from different positions depending on whether the petri dishes 21 are removed one by one from the package 1 or the collection of petri dishes 20 is removed from the package 1, but in either case, the package 1 can be opened from any of the four notches 16t, 17t, 16b, and 17b. In contrast, in a package having only one of the notches 16t, 17t, 16b, and 17b, for example, the opening position is limited when attempting to open at the notch position.

[0041] When removing the Petri dishes 21 one by one from the package 1, the package may be opened, for example, as follows. First, the packaging bag 10 is torn at the notch 16t or the notch 17t, and the end of the packaging bag 10 on the upper edge 13 side is cut off, forming an opening in the packaging bag 10 for removing the Petri dishes 21. Then, the Petri dishes 21 can be removed one by one through this opening. Alternatively, the packaging bag 10 having the opening formed therein as described above may be pulled down toward the lower edge 14 of the packaging bag 10, as shown in FIG. 3, to expose a portion of the Petri dish assembly 20 through the opening. The Petri dishes 21 can be removed one by one through this exposed portion.

[0042] 1, when the Petri dishes 21 are stacked with their main bodies 22 open upward, as in the Petri dish assembly 20 shown in FIG. 1, by opening the package 1 as described above, the Petri dishes 21 can be removed one by one with the main bodies 22 open upward. This eliminates the need to turn the removed Petri dishes 21 upside down, allowing for smooth microbiological testing. Furthermore, since the packaging bag 10 has notches 16t, 17t formed on each of the two side edges 11, 12, the bag can be opened from either the side edge 11 or the side edge 12, regardless of the user's dominant hand.

[0043] When removing the Petri dish assembly 20 from the packaging body 1, it may be opened, for example, as follows. First, the packaging body 1 is placed in the second state (a state in which the packaging body 1 shown in FIG. 1 is inverted upside down). Next, the packaging bag 10 is torn at the notch 16b or the notch 17b, and the end of the packaging bag 10 on the side of the lower edge 14 is cut off, forming an opening in the packaging bag 10 for removing the Petri dishes 21. Next, the opened packaging body 1 is placed on a horizontal table such as a desk with the opening formed in the packaging bag 10 facing downward, and then the packaging bag 10 is lifted up as shown in FIG. 4. This allows the Petri dish assembly 20 from which the packaging bag 10 has been removed to be placed on the table, and the Petri dishes 21 can be removed one by one from the Petri dish assembly 20.

[0044] 1, when the Petri dishes 21 are stacked, as in the Petri dish assembly 20 shown in Fig. 1, by removing the Petri dish assembly 20 from the packaging body 1 as described above, the stacked Petri dish assembly 20 can be placed on a table with the Petri dish bodies 22 open upward. Therefore, by removing the Petri dishes 21 from the Petri dish assembly 20, it is not necessary to turn the Petri dishes 21 upside down, and microorganism testing can be performed smoothly. Furthermore, since the packaging bag 10 has notches 16b, 17b formed on each of the two side edge portions 11, 12, the bag can be opened from either the side edge 11 or the side edge 12, regardless of the user's dominant hand.

[0045] On the other hand, in the packaging body 1 shown in Fig. 1, a method is also conceivable in which the packaging bag 10 is torn at the notch 16t or the notch 17t to form an opening on the upper edge portion 13 side of the packaging bag 10, the opened packaging body 1 is placed on a table with this opening facing downward, and the Petri dish assembly 20 is removed by lifting up the packaging bag 10 as shown in Fig. 4. In this case, the stacked Petri dish assembly 20 is placed on the table with the Petri dish bodies 22 opening downward, so that it is necessary to turn the Petri dish assembly 20 upside down or turn upside down the Petri dishes 21 removed from the Petri dish assembly 20 when performing a microbiological test or the like. Furthermore, in the packaging body 1 shown in Fig. 1, if an opening is formed on the upper edge portion 13 side of the packaging bag 10 and the Petri dish assembly 20 is removed from the stacked Petri dish bodies 22 opening upward, the opening of the packaging bag 10 will be directed upward. In this case, in order to remove the Petri dish assembly 20 from the packaging bag 10, the Petri dish assembly 20 must be lifted up, which makes it difficult to remove.

[0046] As described above, notches 16t, 17t, 16b, and 17b are formed in the side edge portions 11 and 12 of the packaging bag 10 of the packaging body 1, so that the packaging bag 10 can be opened from four different positions. This makes it possible to select the opening position of the packaging bag 10 so that the Petri dishes 21 can be taken out one by one from the packaging body 1, or whether the Petri dishes 21 are taken out one by one from the Petri dish assembly 20 from the packaging body 1 and then the Petri dishes 21 are taken out one by one from the Petri dish assembly 20.

[0047] (Other examples) In the above, a case has been described in which one notch is formed at each of four positions on the side edges 11, 12 of the packaging bag 10 that are above the position of the Petri dish assembly 20 in the direction of gravity in the first and second states of the packaging body 1, but this is not limiting. For example, in the first and second states of the packaging body 1, two or more notches may be formed at any of the positions on the side edges 11, 12 that are above the position of the Petri dish assembly 20 in the direction of gravity, or two or more notches may be formed at all positions. From the perspective of making it possible to open the packaging body 1 while reducing confusion for the opener, it is preferable to provide notches in only four positions as shown in FIG. 1.

[0048] In the first and second states of the packaging body 1, we have described the case where one notch is formed at each of four locations on the side edge portions 11, 12 of the packaging bag 10, which are above the position of the petri dish collection 20 in the direction of gravity.However, one or more notches may be formed at other locations on the side edge portion 11 or the side edge portion 12, which overlap the petri dish collection 20 in the stacking direction Y.

[0049] The above describes a package 1 in which a single row of petri dish collections 20 is contained in a packaging bag 10, but the package may also contain two or more rows of petri dish collections 20 together in a packaging bag 10. [Aspect] Some of the embodiments of the present invention are shown below. [1] A package including a packaging bag formed of a resin film and a petri dish assembly contained in the packaging bag, The petri dish assembly is formed by stacking two or more petri dishes, each of which includes a petri dish body containing a culture medium, A seal portion is formed by overlapping and welding the resin film on each of two opposing side edge portions of the packaging bag, The stack of petri dishes is contained in the packaging bag so that the two side edge portions are arranged along the stacking direction of the petri dishes, A packaging body in which the notches are formed on the two side edges so that in both a first state of the packaging body in which the stacking direction is aligned with the direction of gravity, and a second state of the packaging body in which the stacking direction of the first state is inverted, the notches are positioned at a position above the position of the petri dish assembly in the direction of gravity. [2] The packaging body described in [1], wherein in the first state of the packaging body, the notches are positioned on the two side edges at positions above and below the position of the petri dish assembly in the direction of gravity. [3] The packaging bag has an upper edge portion connecting the upper ends of the two side edge portions and a lower edge portion connecting the lower ends of the two side edge portions, The packaging body according to [1] or [2], wherein a seal portion is formed by overlapping and welding the resin film on at least one of the upper edge portion and the lower edge portion. [4] The package according to any one of [1] to [3], wherein the petri dish has the petri dish body and a lid for the petri dish body. [Explanation of symbols]

[0050] 1 packaging body, 10 packaging bag, 11 side edge portion, 11s seal portion, 12 side edge portion, 12s seal portion, 13 upper edge portion, 14 lower edge portion, 16t, 17t, 16b, 17b notches, 20 petri dish assembly, 21 petri dish, 22 petri dish body, 23 lid body, 24 culture medium, Y stacking direction.

Claims

1. A packaging body including a packaging bag formed of a resin film and a petri dish assembly contained in the packaging bag, The Petri dish assembly is formed by stacking two or more Petri dishes, each including a Petri dish body containing a culture medium, a seal portion formed by welding the resin film to each other on each of two opposing side edges of the packaging bag; The stack of petri dishes is contained in the packaging bag so that the two side edge portions are arranged along the stacking direction of the petri dishes, A packaging body in which the notches are formed on the two side edges so that in both a first state of the packaging body in which the stacking direction is aligned with the direction of gravity, and a second state of the packaging body in which the stacking direction of the first state is inverted, the notches are positioned at a position above the position of the petri dish assembly in the direction of gravity.

2. The package according to claim 1 , wherein in the first state of the package, the notches are positioned on the two side edges at positions above and below the position of the Petri dish stack in the direction of gravity.

3. The packaging bag has an upper edge portion connecting the upper ends of the two side edge portions and a lower edge portion connecting the lower ends of the two side edge portions, The package according to claim 1 or 2, wherein a seal portion is formed by welding the resin film to at least one of the upper edge portion and the lower edge portion.

4. The package according to claim 1 or 2, wherein the petri dish comprises the petri dish body and a lid for the petri dish body.

Images