Packaging material and package for cooling device

Abstract

To provide a packaging material that can reduce the impact of a drop to which a product is subjected.SOLUTION: A packaging material is plate-shaped and includes a central part, an outer part, and a connection part. The outer part is located outside the central part, is thinner than the central part, and has a flat surface. The connection part connects the central part and the outer part. The connection part has a first sloping part and a second sloping part that is located on the outer side of the first sloping part. A first sloping angle of the first sloping part relative to the flat surface is smaller than a second sloping angle of a second sloping part relative to the flat surface.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a packaging material and a package for a cooling device. [Background technology]

[0002] For example, Patent Document 1 discloses an example of a packaging material on which a packaged product to be packaged is placed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-39946 Summary of the Invention [Problem to be solved by the invention]

[0004] When a package containing a product placed on a packaging material is dropped from above, the bottom of the product may come into contact with the packaging material. If the bottom of the product comes into contact with the packaging material, the impact of the fall is concentrated on the corners and edges of the bottom of the product, which may cause the product to deform.

[0005] The present disclosure aims to provide a packaging material and a packaging body for a cooling device that can reduce the impact that a product receives when dropped. [Means for solving the problem]

[0006] According to a first aspect of the present disclosure, a packaging material is a plate-shaped packaging material and includes a central portion, an outer portion, and a connecting portion. The outer portion is located outside the central portion, is thinner than the central portion, and has a flat surface. The connecting portion connects the central portion and the outer portion. The connecting portion has a first inclined portion and a second inclined portion located closer to the outer portion than the first inclined portion, and a first inclination angle of the first inclined portion with respect to the flat surface is smaller than a second inclination angle of the second inclined portion with respect to the flat surface.

[0007] According to a second aspect of the present disclosure, a packaging body for a cooling device includes the packaging material described in claim 1 or 2, and a cooling device arranged from above the central portion to a position closer to the outer portion than the central portion. Effect of the Invention

[0008] According to the present disclosure, for example, it is possible to provide a packaging material and a package for a cooling device that can reduce the impact that a product receives when dropped. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a package according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a perspective view showing a state in which a packaging material is used according to an embodiment of the present disclosure. [Diagram 3] A diagram showing the packaging material and the area around the legs of the cooling device. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 5. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 5. [Figure 8] FIG. 1 is a diagram showing an analytical model. [Figure 9] 13 is a chart showing analysis results. [Figure 10] 13A and 13B are diagrams illustrating modified examples of the connection portion. [Figure 11] FIG. 13 is a diagram showing another modified example of the connection portion. [Figure 12] FIG. 13 is a diagram showing another modified example of the connection portion. [Figure 13] FIG. 13 is a diagram showing another modified example of the connection portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a perspective view showing a packaging body 1 according to an embodiment of the present disclosure. Fig. 2 is a perspective view showing a packaging material 20 according to an embodiment of the present disclosure in use. In the following description, the same or corresponding parts are given the same reference symbols and will be commonly referred to in the description.

[0011] 1, the package 1 includes a packaging material 20, a cooling device 10 which is an example of a cooling device, and a cardboard box 2 which covers the periphery of the cooling device 10. Note that the member which covers the periphery of the cooling device 10 is not limited to the cardboard box 2. The member which covers the periphery of the cooling device 10 may be selected arbitrarily as long as it can at least cover the periphery of the cooling device 10. In the following description, terms indicating directions such as up / down, left / right, front / back, height, depth, etc., refer to directions as viewed by a user standing in front of the cooling device 10 when the cooling device 10 is placed.

[0012] As shown in FIG. 2, the cooling device 10 is placed on the packaging material 20. For example, the packaging material 20 fixes the position of the cooling device 10 when the cooling device 10 is shipped from a factory or the like. Furthermore, the packaging material 20 absorbs the impact of the fall when the package 1 is dropped from above. This suppresses deformation of the corners and ridges of the bottom of the cooling device 10 even if the cooling device 10 and the packaging material 20 interfere with each other. Note that the term "packaging material" refers to a general member used to pack an object, and is not limited to a member located at the bottom of the object to be packed. The packaging material also includes a member located at the top and sides of the object to be packed when the object is packed.

[0013] The configuration of the cooling device 10 on which the packaging material 20 is placed will be described with reference to FIG. 2 and FIG. 3. FIG. 3 is a diagram showing the packaging material 20 and the leg portion 13 of the cooling device 10 and its surroundings. In this disclosure, the cooling device is a general term for a device that cools an object such as foodstuffs. The cooling device 10 includes, for example, a freezer having only a freezer compartment, and a refrigerator having a freezer compartment and a refrigerator compartment. The freezer compartment is a general term for a compartment that cools the temperature inside the room to 0°C or lower. In this embodiment, an example will be described in which the cooling device 10 has a refrigerator compartment in addition to a freezer compartment. "Refrigeration" refers to cooling below room temperature in a temperature range higher than 0°C. However, the present invention is not limited to this configuration. For example, the cooling device 10 may be a freezer having only a freezer compartment.

[0014] 2 and 3, the cooling device 10 has a housing 11, a door 12, legs 13, and a cover 14. In the present disclosure, as shown in Fig. 2, when the cooling device 10 is placed in a packaging material 20, the side on which the door 12 is provided may be referred to as the "front", the side opposite the door 12 as the "rear", the right as viewed from a user standing facing the door 12 as the "right", the left as the "left", the left-right direction as the "width direction", the front-rear direction as the "depth direction", and the up-down direction as the "height direction".

[0015] The housing 11 contains objects such as food ingredients. The housing 11 is configured in a rectangular parallelepiped shape. The housing 11 has thermal insulation properties. The front of the housing 11 is open, and the storage space is opened and closed by a door 12.

[0016] As shown in FIG. 3, the legs 13 prevent the cooling device 10 from tipping over. The legs 13 are adjustment members that adjust the gap between the cooling device 10 and the floor surface. For example, a pair of legs 13 are provided on the left and right. The legs 13 are disposed on the left and right ends, respectively, at the lower end of the front end of the housing 11. As shown in FIG. 3, the legs 13 extend forward from the front end of the housing 11. The legs 13 have a resin portion 13a, a screw portion 13b, and a support portion 13c.

[0017] The screw portion 13b is fixed to the center of the leg portion 13 in the up-down direction. The screw portion 13b is fastened to the support portion 13c. The screw portion 13b adjusts the height position of the resin portion 13a from the surface of the packaging material 20 according to the amount of screwing of the screw portion 13b to the support portion 13c. When the cooling device 10 is in use, the lower end portion 13x of the resin portion 13a comes into contact with the floor surface supporting the cooling device 10. This adjusts the posture of the cooling device 10 and prevents the cooling device 10 from falling over.

[0018] The cover 14 covers the front and the top of the leg 13. The cover 14 extends in the width direction at the lower end of the front end of the housing 11. The cover 14 also extends forward from the front end of the housing 11. The cover 14 is made of, for example, a synthetic resin. The cover 14 is detachable from the housing 11. The cover 14 prevents the leg 13 from being seen by a person positioned in front of the package 1. The lower end 14x of the cover 14 is located below the vertical middle position of the resin part 13a. The lower end 14x of the cover 14 is located above the lower end 13x of the resin part 13a.

[0019] The cooling device 10 is provided with a cooler (not shown). The cooler is not particularly limited as long as it is capable of supplying cold air, and is configured, for example, with a compressor, a condenser, a refrigerant pipe connecting the compressor and the condenser, and a refrigeration cycle including the refrigerant flowing therethrough.

[0020] The packaging material 20 will be described in detail with reference to Fig. 3 to Fig. 7. Fig. 4 is a perspective view of the packaging material 20. Fig. 5 is a plan view of the packaging material 20. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 5. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 5.

[0021] As shown in FIG. 4 and FIG. 5, the packaging material 20 is a plate-shaped member. The material of the packaging material 20 is not particularly limited. The packaging material 20 is preferably made of, for example, a material capable of elastic deformation. A preferred example of the packaging material 20 is a foam such as a resin foam made of a foamed resin. Among them, a specific example of the foamed resin is polystyrene foam, which is a foam of styrene or a styrene composition. The packaging material 20 is capable of elastic deformation and can be restored by elasticity. The packaging material 20 is preferably a viscoelastic body. The packaging material 20 is, for example, configured in a substantially rectangular shape, and the cooling device 10 can be placed on it. In addition, the packaging material 20 functions as a buffer member so that the impact load is not concentrated on the corners and ridges of the lower end of the cooling device 10 when the package 1 is dropped.

[0022] As shown in FIGS. 3 to 7, the packaging material 20 includes a central portion 21, an outer portion 22, and a connecting portion .

[0023] The central portion 21 supports the bottom of the cooling device 10 from below. The central portion 21 is located in the middle of the packing material 20 in the front-rear direction. The central portion 21 is also located in the middle of the packing material 20 in the left-right direction. The central portion 21 has a reference portion 211, a first mounting portion 212, and a second mounting portion 213.

[0024] A first mounting portion 212, a second mounting portion 213, an opening 214, and the like are formed in the reference portion 211. The reference portion 211 is a surface portion that serves as a reference when forming each mounting portion. The reference portion 211 has, for example, a flat surface along a horizontal plane.

[0025] As shown in FIG. 3 to FIG. 5, the first placement portion 212 supports, for example, the left end and the right end of the cooling device 10. The first placement portion 212 is formed so as to extend in the front-rear direction at the left end and the right end of the reference portion 211, respectively. The first placement portion 212 is disposed from the front to the rear of the packaging material 20. As shown in FIG. 3, the first placement portion 212 is formed in a stepped shape protruding upward from the reference portion 211, and is formed higher than the reference portion 211. The first placement portion 212 has a flat surface at the upper end. The left and right first placement portions 212 support the ridge portions at both the left and right ends of the bottom of the housing 11. The first placement portion 212 is located behind the support portion 13c of the leg portion 13. The reference portion 211 is located below the support portion 13c of the leg portion 13. Therefore, when the package 1 is dropped, the impact load input to the housing 11 is distributed into the impact load input from the reference portion 211 and the impact load input from the first placement portion 212.

[0026] The second placement portion 213 supports a middle portion of the bottom of the housing 11 in the left-right direction. As shown in FIG. 4 to FIG. 7, the second placement portion 213 is arranged in a plurality of positions, for example, three positions adjacent to each other in the left-right direction. The second placement portion 213 is formed in a stepped shape upward from the reference portion 211 and is located at a higher position than the reference portion 211. The second placement portion 213 extends in the front-rear direction and is arranged corresponding to the front region of the packaging material 20. The second placement portion 213 has a flat surface at the upper end. The second placement portion 213 supports a center portion of the bottom of the housing 11. The vertical dimension from the bottom of the packaging material 20 to the upper end of the second placement portion 213 is larger than the vertical dimension from the bottom of the packaging material 20 to the upper end of the reference portion 211. In addition, the vertical dimension from the bottom of the packaging material 20 to the top end of the first mounting portion 212 is larger than the vertical dimension from the bottom of the packaging material 20 to the top end of the second mounting portion 213. This enhances the cushioning function for the bottom of the cooling device 10.

[0027] The openings 214 penetrate the packaging material 20 in the up-down direction. For example, a plurality of openings 214 may be provided. Some of the openings 214 are disposed between the first mounting portion 212 and the second mounting portion 213, and are disposed between adjacent second mounting portions 213. In addition, other openings 214 are disposed in the rear region of the second mounting portions 213. This reduces the amount of foam used in the packaging material 20.

[0028] As shown in FIG. 3, a portion that protrudes outward from the cooling device 10 is disposed in the space above the outer portion 22. For example, the outer portion 22 is disposed in a state in which the legs 13 are raised above the packaging material 20. The outer portion 22 is located outside the central portion 21. Specifically, the outer portion 22 is located in front of the central portion 21. The position of the outer portion 22 is not limited to the front of the central portion 21. The position of the outer portion 22 may be behind the central portion 21, or may be to the left or right of the central portion 21. In the following, the "portions that protrude outward from the cooling device 10" may be collectively referred to as protruding portions. The protruding portions include the legs 13 and the cover 14.

[0029] The outer portion 22 has a flat surface 221. The flat surface 221 is located between an end of the outer portion 22 and an outer end of the central portion 21. The vertical dimension from the bottom of the packaging material 20 to the flat surface 221 is smaller than the vertical dimension from the bottom of the packaging material 20 to the upper end of the reference portion 211. In other words, the outer portion 22 is thinner than the central portion 21. This allows the protruding portion and the flat surface 221 to be separated in the vertical direction, and interference between the protruding portion and the flat surface 221 can be suppressed when the package 1 is dropped.

[0030] The connecting portion 23 connects the central portion 21 and the outer portion 22. The connecting portion 23 connects the inner end of the flat surface 221 and the outer end of the central portion 21. Specifically, the connecting portion 23 connects the rear end of the flat surface 221 and the front end of the central portion 21.

[0031] As shown in Fig. 6, the connection portion 23 has a first inclined portion 231 and a second inclined portion 232. As shown in Fig. 4 and Fig. 5, the connection portion 23 extends in the left-right direction between the first mounting portion 212 on the left side and the first mounting portion 212 on the right side.

[0032] The first inclined portion 231 extends outward from the outer end of the central portion 21. Specifically, the first inclined portion 231 extends forward from the front end of the central portion 21, except for both left and right ends of the packaging material 20. The first inclined portion 231 is formed, for example, flat. As shown in FIG. 6, the first inclined portion 231 intersects with the flat surface 221 at a first inclination angle θ1. The first inclined angle θ1 is, for example, 33°. When the first inclined portion 231 is a curved surface, the first inclined portion 231 is approximated to a plane to determine the first inclined angle θ1.

[0033] The second inclined portion 232 is located closer to the outer portion 22 than the first inclined portion 231. Specifically, the second inclined portion 232 extends from the front end of the first inclined portion 231 toward the front side. The second inclined portion 232 is formed, for example, flat. The second inclined portion 232 intersects with the flat surface 221 at a second inclination angle θ2. The second inclined angle θ2 is, for example, 45°. As shown in FIG. 4 and FIG. 5, a plurality of the second inclined portions 232 are provided at intervals in the left-right direction. For example, five second inclined portions 232 are arranged. That is, the first inclined portion 231 and the second inclined portion 232 are provided in a portion in the direction in which the connecting portion 23 extends. Specifically, the first inclined portion 231 and the second inclined portion 232 are provided in a portion in the left-right direction. When the second inclined portion 232 is a curved surface, the second inclined portion 232 is approximated to a flat surface to determine the second inclination angle θ2.

[0034] 6, the first inclination angle θ1 of the first inclined portion 231 with respect to the flat surface 221 is smaller than the second inclination angle θ2 of the second inclined portion 232 with respect to the flat surface 221. Therefore, when the packaging body 1 falls, the upward deformation of the packaging material 20 can be suppressed, and interference between the product to be packaged (hereinafter simply referred to as the product) and the flat surface 221 can be suppressed. In addition, when the packaging body 1 falls, a separation distance between the product and the second inclined portion 232 can be secured. As a result, interference between the product and the flat surface 221 can be suppressed, and the drop impact on the product can be suppressed.

[0035] 6, the connection portion 23 connecting the central portion 21 and the outer portion 22 has a first inclined portion 231 and a second inclined portion 232 located closer to the outer portion 22 than the first inclined portion 231. This allows the thickness of the connection portion 23 in the vertical direction to be increased, ensuring the rigidity of the packaging material 20. By ensuring the rigidity of the packaging material 20, when the package 1 is dropped, the packaging material 20 is prevented from bending upward, and interference between the product and the flat surface 221 is suppressed.

[0036] Furthermore, the first inclination angle θ1 of the first inclined portion 231 with respect to the flat surface 221 is smaller than the second inclination angle θ2 of the second inclined portion 232 with respect to the flat surface 221. This makes it possible to make the vertical separation distance between the product and the second inclined portion 232 larger than the separation distance between the first inclined portion 231 and the product when the first inclined portion 231 is extended outward. Therefore, when the package 1 falls, the separation distance between the product and the second inclined portion 232 can be ensured.

[0037] A ratio R of the second inclination angle θ2 to the first inclination angle θ1 is greater than 1 and equal to or less than 2. Specifically, the ratio R of the second inclination angle θ2 to the first inclination angle θ1 is 1.36. This ensures a vertical separation distance between the product and the second inclined portion 232 when the package 1 is dropped. As a result, interference between the product and the flat surface 221 can be further suppressed.

[0038] Preferably, the ratio R of the second inclination angle θ2 to the first inclination angle θ1 is 1.2 or more and 1.5 or less. When the package 1 is dropped, the vertical separation distance between the product and the second inclined portion 232 can be further ensured. As a result, interference between the product and the flat surface 221 can be further suppressed.

[0039] As shown in Fig. 3, the cooling device 10 has a protruding portion that protrudes outward from the cooling device 10. The protruding portion reaches beyond the central portion 21 to the outer portion 22 side. In other words, the package 1 includes the packaging material 20 and the cooling device 10. The cooling device 10 is disposed so as to extend from above the central portion 21 to the outer portion 22 side beyond the central portion 21. Therefore, when the package 1 falls, a space can be formed below the protruding portion. As a result, interference between the product and the flat surface 221 can be suppressed, and the impact of the product being dropped can be suppressed.

[0040] The packaging material 20 will be described in further detail below.

[0041] As shown in Figs. 4 and 5, a plurality of, for example, five, second inclined portions 232 are arranged in the left-right direction. The second inclined portions 232 are spaced apart from each other. As shown in Fig. 3, the lower end portion 14x of the cover 14 is located below the middle position of the resin portion 13a in the up-down direction. Therefore, when the package 1 falls, the lower end portion 14x of the cover 14 is likely to interfere with the second inclined portions 232. As a result, when the package 1 falls, the impact load input to the legs 13 can be suppressed compared to a package material that does not have the second inclined portions 232.

[0042] As shown in FIG. 4 and FIG. 5, the connection portion 23 has a third inclined portion 233 and a fourth inclined portion 234.

[0043] The third inclined portion 233 is disposed on the left side of the second inclined portion 232 located on the leftmost side and on the right side of the second inclined portion 232 located on the rightmost side. The third inclined portion 233 is disposed in an area where the first inclined portion 231 and the second inclined portion 232 of the connecting portion 23 are not provided. In this embodiment, the third inclined portion 233 is disposed corresponding to the leg portion 13. As shown in FIG. 3, the third inclined portion 233 extends from the front end portion of the reference portion 211 toward the rear end portion of the flat surface 221. The third inclined portion 233 intersects with the flat surface 221 at a third inclination angle θ3.

[0044] The third inclination angle θ3 is larger than the first inclination angle θ1. That is, the third inclination angle θ3 of the third inclined portion 233 with respect to the flat surface 221 is larger than the first inclination angle θ1. The third inclined portion 233 is a portion where the first inclined portion 231 and the second inclined portion 232 of the connecting portion 23 are not provided. That is, since the third inclination angle θ3 is larger than the first inclination angle θ1, a vertical separation distance between the product and the packaging material 20 can be secured. As a result, when the packaging body 1 is dropped, interference between the product and the connecting portion 23 can be avoided.

[0045] As shown in Figs. 4 and 5, the fourth inclined portion 234 extends from the front end of the first inclined portion 231 toward the front side. The fourth inclined portion 234 is formed, for example, flat. The fourth inclined portion 234 is disposed between the second inclined portions 232 adjacent to each other in the left-right direction. For example, four fourth inclined portions 234 are disposed. As shown in Fig. 7, the fourth inclined portion 234 extends from the front end of the first inclined portion 231 toward the rear end of the flat surface 221. The fourth inclined portion 234 intersects with the flat surface 221 at a fourth inclination angle θ4.

[0046] The fourth inclination angle θ4 is larger than the first inclination angle θ1. In other words, since the fourth inclination angle θ4 is larger than the first inclination angle θ1, a separation distance between the product and the packaging material 20 can be secured. As a result, interference between the product and the connection portion 23 can be avoided. In addition, for example, a member protruding outward from the cooling device 10 can be arranged in the space in front of the fourth inclination portion 234. A member protruding outward from the cooling device 10, for example, a carrying handle (not shown) of the cooling device 10 can be arranged. For example, a pair of carrying handles are provided on the left and right. The carrying handles are fixed to the lower ends of the front end portion of the housing 11. Therefore, even a cooling device 10 having a carrying handle can be placed on the packaging material 20.

[0047] Next, an example of analysis using CAE (Computer Aided Engineering) will be described for the packaging material 20. Fig. 8 is a diagram showing an analysis model. Fig. 9 is a table showing the analysis results.

[0048] For the analysis example, six models, model M1 to model M6, were prepared. Model M1 to model M6 are packaging materials 20 on which cooling devices 10 having the same configuration as cooling device 10 are placed. CAE analysis was performed on the cases where models M1 to M6 were each dropped from a predetermined height position. Evaluation items were, for example, the amount of deformation in the vertical direction of legs 13 of cooling device 10 and the amount of discoloration of cover 14.

[0049] When an impact load is applied to the leg 13 due to interference between the leg 13 and the flat surface 221, the leg 13 is deformed upward. The greater the impact load applied to the leg 13, the greater the amount of upward deformation of the leg 13. When an impact load is applied to the cover 14 due to interference between the cover 14 and the second inclined portion 232, a local portion of the synthetic resin cover 14, for example, the base end portion of the rib, is discolored white. The greater the impact load concentrated on the cover 14, the greater the amount of discoloration of the base end portion of the cover 14 and the larger the discolored area. In this CAE analysis, a comprehensive evaluation was performed on the ratio R of the second inclination angle θ2 to the first inclination angle θ1, the amount of deformation of the leg 13, and the amount of discoloration of the cover 14.

[0050] As shown in Fig. 8, the conditions of models M1 to M6 are the same except for the second inclination angle θ2. The first inclination angles θ1 of models M1 to M6 are all set to, for example, 33°. The second inclination portion 232 connects the first inclination portion 231 and the flat surface 221. A drop analysis was performed on models M1 to M6 under the same conditions.

[0051] The model M1 has, for example, a second inclination angle θ2a of 37.95° and a ratio R of 1.15. The model M2 has, for example, a second inclination angle θ2b of 39.5° and a ratio R of 1.20. The model M3 has, for example, a second inclination angle θ2c of 41.25° and a ratio R of 1.25. The model M4 has, for example, a second inclination angle θ2d of 45° and a ratio R of 1.36. The model M5 has, for example, a second inclination angle θ2e of 49.5° and a ratio R of 1.50. The model M6 has, for example, a second inclination angle θ2f of 60° and a ratio R of 1.80.

[0052] The results of the CAE analysis will now be described. As shown in the chart of FIG. 9, the deformation amount of the leg 13 and the discoloration amount of the cover 14 of the models M1 to M6 were both good, and satisfied the preset performance criteria. In particular, it was found that the deformation amount of the leg 13 of the models M2 to M5 was smaller than that of the other models. It was also found that the discoloration amount of the cover 14 of the models M2 to M5 was smaller than that of the other models.

[0053] From the above, it was confirmed that when the ratio R of the second inclination angle θ2 to the first inclination angle θ1 is greater than 1 and equal to or less than 2, the deformation of the legs 13 is small and the discoloration of the cover 14 is suppressed. In addition, it was confirmed that when the ratio R of the second inclination angle θ2 to the first inclination angle θ1 is greater than or equal to 1.2 and equal to or less than 1.5, the deformation of the legs 13 is even smaller and the discoloration of the cover 14 is even more suppressed.

[0054] An embodiment of the present disclosure has been described above with reference to the drawings. However, the present disclosure is not limited to the above embodiment, and can be implemented in various forms without departing from the spirit of the present disclosure. The drawings are mainly schematic illustrations of each component for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings are different from the actual ones due to the convenience of drawing. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiment are examples and are not particularly limited, and various changes are possible within a range that does not substantially deviate from the configuration of the present disclosure.

[0055] (1) As described with reference to Figs. 1 to 9, in this embodiment, the connection portion 23 is disposed in the front portion of the packaging material 20, but the present disclosure is not limited to this. It is sufficient to dispose the connection portion 23 in a limited manner corresponding to at least a portion of the product to be packaged where the effect of an impact load is to be reduced. Therefore, the connection portion 23 may be disposed in the rear portion of the packaging material 20, or the connection portion 23 may be disposed in the left portion of the packaging material 20 or the right portion of the packaging material 20. The connection portion 23 may also be provided partially.

[0056] (2) As described with reference to Figures 1 to 9, in this embodiment, the first inclined portion 231 and the second inclined portion 232 are each configured to be flat, but the present disclosure is not limited to this. Various modified examples of the first inclined portion 231 and the second inclined portion 232 can be adopted, as described below.

[0057] Modifications of the packaging material 20 will be described with reference to FIGS.

[0058] As shown in FIG. 10, the packaging material 20A may have a connecting portion 23A formed of a convex curved surface. FIG. 10 is a diagram showing a modified example of the connecting portion 23. The connecting portion 23A has a first inclined portion 231A and a second inclined portion 232A. The first inclined portion 231A extends from the front end portion of the central portion 21 toward the front side. The first inclined portion 231A is formed, for example, into a curved surface that is convex upward. In this case, the first inclined portion 231A is approximated to a plane, and the first inclination angle, which is the intersection angle between the first inclined portion 231A and the flat surface 221, is obtained.

[0059] The second inclined portion 232A extends forward from the front end of the first inclined portion 231A. The second inclined portion 232A is formed, for example, as a curved surface that is convex upward. In this case, the second inclined portion 232A is approximated to a plane to obtain a second inclination angle that is an intersection angle between the second inclined portion 232A and the flat surface 221. The first inclination angle of the first inclined portion 231A with respect to the flat surface 221 is smaller than the second inclination angle of the second inclined portion 232A with respect to the flat surface 221.

[0060] As shown in FIG. 11, the packaging material 20B may have a connection portion 23B formed of a concave curved surface. FIG. 11 is a diagram showing another modified example of the connection portion 23. The connection portion 23B has a first inclined portion 231B and a second inclined portion 232B. The first inclined portion 231B extends from the front end portion of the central portion 21 toward the front side. The first inclined portion 231B is formed, for example, into a curved surface that is concave toward the bottom. In this case, the first inclined portion 231B is approximated to a plane, and the first inclination angle, which is the intersection angle between the first inclined portion 231B and the flat surface 221, is obtained.

[0061] The second inclined portion 232B extends forward from the front end of the first inclined portion 231B. The second inclined portion 232B is formed, for example, on a curved surface that is concave downward. In this case, the second inclined portion 232B is approximated to a plane to obtain a second inclination angle that is an intersection angle between the second inclined portion 232B and the flat surface 221. The first inclination angle of the first inclined portion 231B with respect to the flat surface 221 is smaller than the second inclination angle of the second inclined portion 232B with respect to the flat surface 221.

[0062] As shown in Fig. 12, the packaging material 20C may have a connecting portion 23C formed of a convex curved surface and a concave curved surface. Fig. 12 is a diagram showing another modified example of the connecting portion 23. The connecting portion 23C has a first inclined portion 231C and a second inclined portion 232C. The first inclined portion 231C extends from the front end portion of the central portion 21 toward the front side. The first inclined portion 231C is formed, for example, in a curved surface that is convex toward the upward direction.

[0063] The second inclined portion 232C extends from the front end of the first inclined portion 231C toward the front side. The second inclined portion 232C is formed, for example, in a curved surface that is concave downward. A first inclination angle of the first inclined portion 231C with respect to the flat surface 221 is smaller than a second inclination angle of the second inclined portion 232C with respect to the flat surface 221. Note that the first inclined portion 231C may be formed in a concave curved surface that faces downward, and the second inclined portion 232C may be formed in a convex curved surface that faces upward.

[0064] As shown in Fig. 13, the packaging material 20D may have a connecting portion 23D that is configured by an inclined surface and a flat surface. Fig. 13 is a diagram showing another modified example of the connecting portion 23. The connecting portion 23D has a first inclined portion 231, a second inclined portion 232, and a flat portion 235. The first inclined portion 231 extends from the front end portion of the central portion 21 toward the front side. The first inclined portion 231 is formed flat, for example, and has a first inclination angle θ1 with respect to the flat surface 221.

[0065] The flat portion 235 extends forward from the front end of the first inclined portion 231. The flat portion 235 is formed, for example, flat. The flat portion 235 is parallel to the flat surface 221.

[0066] The second inclined portion 232 extends forward from the front end of the flat portion 235. The second inclined portion 232 is formed, for example, flat and has a second inclination angle θ2 with respect to the flat surface 221. The first inclination angle θ1 of the first inclined portion 231 with respect to the flat surface 221 is smaller than the second inclination angle θ2 of the second inclined portion 232 with respect to the flat surface 221.

[0067] (3) As described with reference to Figs. 1 to 9, in this embodiment, the package 1 has the packaging material 20, the cooling device 10, and the cardboard 2 that covers the periphery of the cooling device 10, but the present disclosure is not limited to this. The package only needs to have at least the packaging material and the cooling device placed on the packaging material, and the cardboard that covers the periphery of the cooling device may be omitted. In addition, the cooling device may be covered with a covering material other than the cardboard. [Explanation of symbols]

[0068] 1: Packaging 10: Cooling device 20: Packaging materials 21: Central part 22 :Outer part 23: Connection part 221 :Flat surface 231: 1st slope part 232:Second slope part R: ratio θ1: 1st inclination angle θ2: 2nd inclination angle θ3: Third inclination angle

Claims

1. A plate-shaped packaging material, The center and an outer portion located outside the central portion, the outer portion being thinner than the central portion and having a flat surface; a connection portion connecting the central portion and the outer portion; Equipped with The connection portion is A first inclined portion; a second inclined portion located closer to the outer portion than the first inclined portion; having A packaging material, wherein a first inclination angle of the first inclined portion relative to the flat surface is smaller than a second inclination angle of the second inclined portion relative to the flat surface.

2. 2. The packaging material of claim 1, wherein a ratio of the second tilt angle to the first tilt angle is greater than 1 and less than or equal to 2.

3. 3. The packaging material according to claim 2, wherein a ratio of the second tilt angle to the first tilt angle is equal to or greater than 1.2 and equal to or less than 1.

5.

4. the first inclined portion and the second inclined portion are provided at a portion in an extending direction of the connection portion, The packaging material according to claim 1 , wherein a third inclination angle of the connecting portion with respect to the flat surface at a portion where the first inclined portion and the second inclined portion are not provided is larger than the first inclination angle.

5. The packaging material according to claim 1 or 2; a cooling device disposed from above the central portion to a portion closer to the outer portion than the central portion; A packaging body for a cooling device comprising:

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