Packaging material

Abstract

To provide a new packaging material that creates a premium look.SOLUTION: The packaging material is made of resin foam, and comprises a flat surface and a concave surface which is connected to the flat surface and forms an inner space for storing a fruit.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a packaging material.

Background Art

[0002] Patent Document 1 discloses a packaging material including a fruit storage part for storing fruits, a slit extending to the bottom of the fruit storage part, and a fruit stalk storage part connected to the slit. This packaging material stores the fruit stalk in the fruit stalk storage part and sandwiches it with the slit to maintain the posture of the fruit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, with the branding of fruits, the demand for packaging materials that can produce a sense of luxury has been increasing. Such a packaging material preferably can wrap fruits one by one or hold the stored fruits in a good-looking posture.

[0005] An object of the present invention is to provide a novel packaging material that can produce a sense of luxury.

[0006] The packaging material according to one aspect of the present disclosure is a packaging material made of a foamed resin, and includes a surface and a concave surface connected to the surface and forming an internal space for storing one fruit.

Effects of the Invention

[0007] According to the packaging material of the present disclosure, a novel packaging material that can produce a sense of luxury can be provided.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Mode for Carrying Out the Invention

[0009] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0010] As shown in FIG. 1, the packaging material 1 according to an embodiment of the present disclosure is a foamed resin molded body for accommodating the fruit F1.

[0011] The packaging material 1 is formed of a breathable foamed resin having a closed-cell structure. The foamed resin is, for example, polyurethane (PU), low density polyethylene (LDPE), high density polyethylene (HDPE), or ethylene-vinyl acetate copolymer resin (EVA).

[0012] The packaging material 1 of the present embodiment has an apparent density of approximately 10 kg / m 3 or more and 40 kg / m 3(JIS K 6400) Hereinafter, it is formed of a soft polyurethane foam having a hardness of 40 N or more and 150 N or less (JIS K 6400), a tensile strength of 50 kPa or more, an elongation of 90% or more (JIS K 6400), and a compression residual strain of 10% or less. Further, the polyurethane foam forming the packaging material 1 preferably conforms to the standard criteria for utensils and container packaging under the Food Sanitation Law. Specifically, it is preferable that the elution of cadmium, lead, etc. at the use temperature is below the standard value.

[0013] In this embodiment, the packaging material 1 is a packaging material for individual packaging that houses one fruit F1 in one packaging material 1. The packaging material 1 for individual packaging can produce a high-class feeling of the fruit F1.

[0014] The fruit F1 has a slightly flat shape, and the total length is 30 mm or more and 50 mm or less (refer to the arrow X direction or arrow Y direction in FIG. 1). Further, the packaging material 1 may house the fruit stalk F2 extending from the fruit F1 together with the fruit F1. The length of the fruit stalk F2 is 50 mm or more and 60 mm or less. The packaging material 1 of this embodiment houses one cherry as the fruit F1 and the stalk of the cherry as the fruit stalk F2. Not limited to this, the fruit F1 and the fruit stalk F2 may be strawberries, loquats, figs, or other fruits with a total length of 20 mm or more and 80 mm or less.

[0015] The packaging material 1 is a block body having an outer dimension larger than that of the fruit F1. The packaging material 1 of this embodiment has a width of 40 mm or more and 60 mm or less (arrow X direction in FIG. 1), a length of 60 mm or more and 80 mm or less (arrow Y direction in FIG. 1), and a thickness of 30 mm or more and 60 mm or less (arrow Z direction in FIG. 1). Not limited to this, the outer dimension of the packaging material 1 can be appropriately changed according to the size and shape of the fruit F1 and the fruit stalk F2 to be housed.

[0016] The sizes of the packaging material 1 in the width direction (the direction of arrow X in FIG. 1) and the length direction (the direction of arrow Y in FIG. 1) are larger than the width and length of the fruit F1 and the fruit stalk F2 to be accommodated. In order to produce a sense of luxury, preferably, the packaging material 1 only needs to be large enough to ensure sufficient margin around the fruit F1. Specifically, in a top view, the ratio of the area occupied by the fruit F1 to the area of the packaging material 1 is preferably 30% or more and 50% or less. Also, the margin around the fruit F1 is preferably 50% or more, more preferably 70% or more, of the area of the packaging material 1 in a top view.

[0017] As shown in FIGS. 2 and 3, the packaging material 1 includes a surface 2 and a concave surface 4 connected to the surface 2.

[0018] The concave surface 4 is a curved surface that is concave with respect to the surface 2. The concave surface 4 of the present embodiment is located at a position away from the center of the packaging material 1 in the length direction (the direction of arrow Y in FIGS. 2 and 3).

[0019] Also, the concave surface 4 preferably has a length of 1 / 5 or more and 1 / 3 or less of the total length of the packaging material 1 in the length direction (the direction of arrow Y in FIG. 2). Further, the length of the concave surface 4 in the width direction (the direction of arrow X in FIG. 2) is preferably 1 / 3 or more and 1 / 2 or less of the total width of the packaging material 1. Thereby, the packaging material 1 can ensure sufficient margin around the concave surface 4.

[0020] The concave surface 4 of the present embodiment has a length of approximately 1 / 4 of the total length of the packaging material 1. Also, the concave surface 4 has a width of approximately 1 / 2 of the total width of the packaging material 1. Not limited thereto, the area of the concave surface 4 and the internal space 44 in a top view can be changed according to the shape or size of the fruit F1 to be housed in the packaging material 1.

[0021] The concave surface 4 forms an internal space 44 for accommodating one fruit F1. The internal space 44 of the present embodiment has a volume of about 50% to 70% of the volume of the fruit F1.

[0022] As a result, a part of the fruit F1 stored in the internal space 44 protrudes from the internal space 44. For this reason, the packaging material 1 can store the fruit F1 while exposing a part of the surface thereof. As a result, the packaging material 1 can hold the fruit F1 in a good-looking manner.

[0023] Furthermore, the internal space 44 may be formed to be the same as or slightly smaller than the area of the fruit F1 in a top view. As a result, when the fruit F1 is accommodated in the internal space 44, the concave surface 4 contracts, and the fruit F1 can be held by the reaction force thereof. As a result, the packaging material 1 can stably hold the fruit F1.

[0024] As shown in FIG. 3, the concave surface 4 has a first inclined surface 41 and a second inclined surface 42 facing the first inclined surface 41. In the present embodiment, the first inclined surface 41 and the second inclined surface 42 face each other in the length direction of the packaging material 1 (the direction of arrow Y in FIG. 3). The first inclined surface 41 is disposed at a position farther from the center of the packaging material 1 than the second inclined surface 42, and the second inclined surface 42 is disposed on the center side of the packaging material 1.

[0025] The first inclined surface 41 is connected to the second inclined surface 42 at the deepest point P0 of the concave surface 4. The distance between the point P0 and the surface 2 in the Z direction coincides with the depth d of the internal space 44. The depth d of the present embodiment is 15 mm or more and 25 mm or less.

[0026] The first inclined surface 41 is a curved surface that extends from the point P0 to the surface 2. The first inclined surface 41 is connected to the surface 2 at the point P1.

[0027] The first inclined surface 41 is inclined at a first angle θ1. The first angle θ1 is an angle formed by the line connecting the point P0 and the point P1 and the surface 2. The first angle θ1 of the present embodiment is 45° or more and 80° or less.

[0028] The second inclined surface 42 is a curved surface that extends from the point P0 to the surface 2 on the opposite side of the first inclined surface 41. The second inclined surface 42 is connected to the surface 2 at the point P2.

[0029] The second inclined surface 42 is inclined at a second angle θ2. The second angle θ2 is the angle formed by the line connecting the point P0 and the point P2 and the surface 2. Different from the first angle θ1, the second angle θ2 is smaller than the first angle θ1 in the present embodiment. The second angle θ2 of the present embodiment is 20° or more and 60° or less.

[0030] As described above, the internal space 44 of the packaging material 1 of the present embodiment is surrounded by the concave surface 4 having the first inclined surface 41 and the second inclined surface 42 with different inclination angles. Thereby, the fruit F1 accommodated in the internal space 44 is supported at different angles from the first inclined surface 41 and the second inclined surface 42, respectively. Thereby, the packaging material 1 can stably hold the fruit F1.

[0031] Furthermore, the concave surface 4 of the packaging material 1 has a first inclined surface 41 disposed at a position away from the center in the longitudinal direction (the direction of the arrow Y in FIG. 3) and a second inclined surface 42 disposed closer to the center side than the first inclined surface 41. Thereby, the fruit F1 accommodated in the internal space 44 of the concave surface 4 is disposed offset from the center of the packaging material 1 in the longitudinal direction. For this reason, the packaging material 1 can store the entire fruit F1 and the fruit stalk F2 within the range of the packaging material 1 in a top view. As a result, the packaging material 1 can hold the fruit F1 beautifully.

[0032] Also, the shape of the concave surface 4 and thus the internal space 44 may be formed according to the shape of the fruit F1 to be stored in the packaging material 1. For example, the first angle θ1 of the first inclined surface 41 may be set according to the shape from the base of the fruit stalk F2 to the upper part of the fruit F1. Further, the second angle θ2 of the second inclined surface 42 may be set according to the shape of the lower part of the fruit F1. Thereby, the packaging material 1 can store the fruit F1 in the internal space 44 without gaps and beautifully.

[0033] In the present embodiment, the first angle θ1 of the first inclined surface 41 is set according to the shape from the base of the fruit stalk F2 of the cherry to the upper part of the fruit F1. Further, the second angle θ2 of the second inclined surface 42 is set according to the shape of the lower part of the cherry fruit F1.

[0034] As shown in Fig. 2, the packaging material 1 has a protruding portion 6. The protruding portion 6 protrudes from the first inclined surface 41 toward the internal space 44. In the present embodiment, the protruding portion 6 protrudes from the first inclined surface 41 with a length of 1 mm or more and 2 mm or less in the length direction (the direction opposite to the arrow Y in Fig. 2). The root of the fruit stalk F2 (both are shown in Fig. 1) of the fruit F1 stored in the internal space 44 may be arranged on the protruding portion 6. Thereby, the protruding portion 6 can prevent the fruit F1 from rotating and moving in a state where the fruit F1 is stored in the internal space 44. For this reason, the packaging material 1 can stably hold the fruit F1 in the internal space 44.

[0035] Next, with reference to Figs. 4 to 10, the manufacturing method S of the packaging material 1 of the present disclosure will be described. The manufacturing method S includes a step S1 of preparing a resin foam molded body 10, a step S2 of preparing a mold 20, a step S3 of accommodating the resin foam molded body 10 in the upper mold 21, a step S4 of pressing the resin foam molded body 10 with the lower mold 22, a step S5 of cutting the resin foam molded body 10, and a step S6 of demolding the resin foam molded body 10.

[0036] First, in step S1, a resin foam molded body 10 is prepared. As shown in Fig. 4, the resin foam molded body 10 is a block body formed of a soft urethane foam of the same quality as the packaging material 1. The thickness h of the resin foam molded body 10 is preferably 50 mm or more and 150 mm or less. In the present embodiment, a resin foam molded body 10 formed in advance to be equal to the outer dimensions of the packaging material 1 (see Fig. 1) is prepared. However, the resin foam molded body 10 may have a size different from the outer dimensions of the packaging material 1.

[0037] Next, in step S2, a mold 20 is prepared. As shown in Fig. 5, the mold 20 includes an upper mold 21 and a lower mold 22.

[0038] The upper mold 21 has a housing recess 21a and a hole portion 21b.

[0039] The accommodation recess 21a is formed to be able to accommodate the resin foam molded body 10 and opens downward (in the direction opposite to the arrow Z in FIG. 5). The accommodation recess 21a of the present embodiment is a rectangular space. The accommodation recess 21a is formed to be the same as or slightly smaller than the outer dimensions of the resin foam molded body 10. Not limited to this, the accommodation recess 21a can be selected in various shapes according to the shape and size of the resin foam molded body 10.

[0040] Not limited to this, the accommodation recess 21a only needs to be able to fix and press the resin foam molded body 10 together with the lower mold 22. For example, the accommodation recess 21a may be formed by combining, for example, a flat plate that sandwiches the resin foam molded body 10 in the vertical direction (the arrow Z direction in FIG. 5) and a spacer.

[0041] The hole 21b communicates the accommodation recess 21a with the outside. The hole 21b is arranged on the side opposite to the side where the accommodation recess 21a opens. The hole 21b is formed to be able to receive the convex portion 22b of the lower mold 22 described later. The hole 21b of the present embodiment has the same shape as the concave surface 4 of the packaging material 1 (both are shown in FIG. 2) in a top view.

[0042] The lower mold 22 has a pressing plate 22a and a convex portion 22b.

[0043] The pressing plate 22a extends in the width direction (the arrow X direction in FIG. 5) and the length direction (the arrow Y direction in FIG. 5). The pressing plate 22a covers the opening of the accommodation recess 21a of the upper mold 21 in a state where the upper mold 21 and the lower mold 22 are closed (hereinafter referred to as the closed mold state).

[0044] The convex portion 22b is a solid columnar shape protruding from the pressing plate 22a. The convex portion 22b is arranged inside the accommodation recess 21a in the closed mold state and faces the hole 21b of the upper mold 21. The height of the convex portion 22b (in the arrow Z direction in FIG. 5) is 50% or more and 80% or less with respect to the thickness h of the resin foam molded body 10. Note that the height of the convex portion 22b can be changed based on the depth d of the concave surface 4 of the packaging material 1 (both are shown in FIG. 2). When increasing the depth d of the concave surface 4, the convex portion 22b may be made higher. Conversely, when decreasing the depth d of the concave surface 4, the convex portion 22b may be made lower.

[0045] The convex portion 22b is formed so as to be insertable into the hole portion 21b of the upper mold 21. The outer shape of the convex portion 22b in a top view of the present embodiment is the same as that of the hole portion 21b and thus the concave surface 4 of the packaging material 1 (both are referred to FIG. 1).

[0046] The convex portion 22b includes a pressing surface 221. The pressing surface 221 is provided at an end opposite to the pressing plate 22a of the convex portion 22b. The pressing surface 221 is a curved surface that protrudes in the height direction (the direction of arrow Z in FIG. 5). In the present embodiment, the pressing surface 221 is disposed inside the accommodation recess 21a of the upper mold 21 and faces the hole portion 21b in the mold-closed state.

[0047] Furthermore, in step S3, the resin foam molded body 10 is accommodated in the accommodation recess 21a of the upper mold 21. As shown in FIG. 6, the resin foam molded body 10 is inserted into the accommodation recess 21a from below the upper mold 21 (the direction opposite to the arrow Z in FIG. 6). In the present embodiment, the resin foam molded body 10 is accommodated in the accommodation recess 21a without a gap.

[0048] Next, in step S4, with the resin foam molded body 10 accommodated in the upper mold 21, the upper mold 21 and the lower mold 22 are closed. The convex portion 22b of the lower mold 22 presses a part of the resin foam molded body 10 toward the hole portion 21b of the upper mold 21. Thereby, a part of the resin foam molded body 10 is compressed between the pressing surface 221 of the convex portion 22b and the hole portion 21b. The other part of the resin foam molded body 10 is pressed by the pressing plate 22a of the lower mold 22 and is completely accommodated in the accommodation recess 21a.

[0049] FIG. 7 is a perspective view showing the mold 20 closed with the resin foam molded body 10 accommodated therein. As shown in FIG. 7, a part of the resin foam molded body 10 (hereinafter referred to as a bulging portion 101) bulges out from the hole portion 21b of the upper mold 21 and is exposed outside the mold 20. As shown in FIG. 8, the bulging portion 101 of the present embodiment is pressed upward (the direction of arrow Z in FIG. 8) by the pressing surface 221 of the convex portion 22b. Thereby, the bulging portion 101 bulges out from the hole portion 21b of the upper mold 21 and has a dome shape that protrudes upward (the direction of arrow Z in FIG. 8).

[0050] Furthermore, the portion of the resin foam molded body 10 excluding the bulging portion 101 (hereinafter referred to as the main body portion 102) is housed in the housing recess 21a and is pressed by the convex portion 22b of the lower mold 22 from below (the direction opposite to the arrow Z in FIG. 8). As a result, the main body portion 102 is compressed in the vertical direction (the arrow Z direction in FIG. 8) between the upper mold 21 and the lower mold 22.

[0051] Furthermore, as shown in FIG. 9, in step S5, the resin foam molded body 10 is cut with a cutting tool 30. The cut surface of the resin foam molded body 10 by the cutting tool 30 becomes the concave surface 4 (see FIG. 1) of the packaging material 1. The cutting tool 30 of the present embodiment is a plate-shaped industrial cutter extending along the width direction (the arrow X direction in FIG. 9). Not limited to this, the cutting tool 30 can select various cutting tools such as a wire cutter and a laser cutter.

[0052] As shown in FIGS. 9 and 10, the cutting tool 30 moves horizontally (the arrow Y direction in FIGS. 9 and 10) on the top surface of the mold 20 in the closed state from the start position S0 to the end position S10. Along with this, the cutting tool 30 horizontally cuts the resin foam molded body 10 along the cutting line (see the dotted line in FIG. 10). As a result, the cutting tool 30 separates the bulging portion 101 and the main body portion 102 of the resin foam molded body 10 and cuts off the bulging portion 101 from the resin foam molded body 10.

[0053] FIG. 11 is a schematic view showing a state where the cutting tool 30 cuts the resin foam molded body 10. As shown in FIG. 11(a), the bulging portion 101 receives the cutting tool 30 in a state of being pushed upward (the arrow Z direction in FIG. 11(a)) by the convex portion 22b of the lower mold 22.

[0054] As shown in FIG. 11(b), an edge is formed at the location where the cutting tool 30 first cuts the bulging portion 101 of the resin foam molded body 10. Furthermore, the cutting tool 30 advances while cutting the base of the bulging portion 101. The resin foam molded body 10 is cut in a state of being pressed by the pressing surface 221 of the convex portion 22b and partially compressed.

[0055] As shown in FIG. 11(c), as the cutting tool 30 further advances and passes the most convex portion of the bulging portion 101, the bulging portion 101 that has not yet been cut by the cutting tool 30 is compressed and further deformed between the hole portion 21b of the upper mold 21 and the cutting tool 30 in addition to the pressing by the convex portion 22b of the lower mold 22. For this reason, the slope of the cut surface by the cutting tool 30 becomes large, and the first inclined surface 41 of the concave surface 4 (both refer to FIG. 2) is formed.

[0056] As shown in FIG. 11(d), the cutting tool 30 completely cuts off the bulging portion 101. In the present embodiment, the cutting tool 30 cuts the continuous cell structure of the bulging portion 101 and thus the resin foam molded body 10. As a result, the cut surface is in a state where a part of the individual cells of the continuous cell structure is opened.

[0057] Finally, in step S6, the resin foam molded body 10 is demolded from the mold 20. As a result, the resin foam molded body 10 is released from the compressed state, and thus the packaging material 1 having the concave surface 4 is obtained.

[0058] In the present embodiment, from FIG. 11(a) to (b), the bulging portion 101 is cut while being pulled by the cutting tool 30. Further, from FIG. 11(c) to (d), the bulging portion 101 is cut while being compressed by the cutting tool 30 and the convex portion 22b. In step S6 after FIG. 11(d), when the upper mold 21 and the lower mold 22 are removed from the resin foam molded body 10 and the compression force by the convex portion 22b disappears, the resin foam molded body 10 is restored and the concave surface 4 is formed. At this time, the inclination angles of the cut surfaces are different at the portions cut while being pulled by the cutting tool 30 and the portions cut while being compressed. As a result, the packaging material 1 (both refer to FIG. 2) in which the inclination angles of the first inclined surface 41 and the second inclined surface 42 are different can be obtained.

[0059] The manufacturing method S of the present disclosure includes a step S1 of preparing the resin foam molded body 10, a step S2 of preparing the mold 20, a step S3 of housing the resin foam molded body 10 in the upper mold 21, a step S4 of pressing the resin foam molded body 10 with the lower mold 22, a step S5 of cutting the resin foam molded body 10, and a step S6 of demolding the resin foam molded body 10.

[0060] As a result, the manufacturing method S can cut a part of the resin foam molded body 10 pressed by the mold 20. Therefore, the manufacturing method S can form the packaging material 1 having the concave surface 4.

[0061] Furthermore, the mold 20 may include an upper mold 21 having a housing recess 21a for housing the resin foam molded body 10 and a hole portion 21b, and a lower mold 22 having a pressing plate 22a and a convex portion 22b corresponding to the hole portion 21b.

[0062] As a result, in the mold-closed state, the mold 20 presses the bulging portion 101 of the resin foam molded body 10 from the convex portion 22b. The bulging portion 101 bulges from the hole portion 21b and is exposed to the outside. In step S5 of the manufacturing method S, the blade 30 cuts the bulging portion 101. Therefore, the manufacturing method S can form the concave surface 4 having the internal space 44.

[0063] Also, in step S5, the blade 30 may form a first inclined surface 41 inclined at a first angle θ1 and a second inclined surface 42 that faces the first inclined surface 41 and is inclined at a second angle θ2 different from the first angle θ1.

[0064] Furthermore, the blade 30 may advance from the start position S0 to the end position S10, form the second inclined surface 42 on the start position S0 side, and form the first inclined surface 41 on the end position S10 side.

[0065] As described above, according to the packaging material 1 of the present disclosure, a novel packaging material capable of producing a sense of luxury can be provided.

[0066] As described above, the embodiments of the present disclosure have been described. However, the present disclosure is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. In particular, a plurality of modification examples described in this specification can be arbitrarily combined as necessary.

Description of Reference Numerals

[0067] 1: Packaging material F: Fruit 2: Surface 4: Concave surface 41: First inclined surface 42: Second inclined surface θ1: First angle θ2: Second angle 6: Protrusion

Claims

1. A packaging material made of foamed resin, comprising: a surface; a concave surface connected to the surface and forming an internal space for containing one fruit; and the packaging material.

2. The concave surface includes: a first inclined surface inclined at a first angle with respect to the surface; a second inclined surface facing the first inclined surface and inclined at a second angle different from the first angle with respect to the surface; The packaging material according to claim 1, having the above.

3. further comprising a protruding portion protruding from the first inclined surface toward the internal space; the first angle is larger than the second angle; The packaging material according to claim 2.

Images