Package

Abstract

To provide a package capable of preventing poor adhesion.SOLUTION: There is provided a package 1 for packaging a container Y containing an object to be contained, including: a first non-shrinkable base material 2 that cannot be heat-shrinkable; a heat-shrinkable shrink film 3; and a second non-shrinkable base material 4 that is not heat-shrinkable and is provided on the shrink film 3, in which the second non-shrinkable base material 4 is provided at a location where the first non-shrinkable base material 2 and the shrink film 3 are bonded together when the container Y is packaged.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a package.

Background Art

[0002] Conventionally, various foods such as boxed lunches and prepared foods sold at convenience stores, supermarkets, etc. are housed in a resin container body, and a transparent lid is placed on top of the container body. And the container in a state where such a container body and a lid are in close contact with each other is packaged with a strip-shaped package (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, such a package has a configuration as shown in FIG. 5(a). That is, the package 100 is composed of a non-shrinkable base material 101 having a rectangular cross-section and a shrink film 102 having a rectangular cross-section and performing heat shrinkage. And an adhesive 103 is applied to the lower surface 101b on the right side surface 101a of the non-shrinkable base material 101, and the upper surface 102b on the left side surface 102a of the shrink film 102 is attached to the adhesive 103. As a result, the shrink film 102 is provided on the lower surface 101b on the right side surface 101a of the non-shrinkable base material 101. On the other hand, a heat-sealing agent 104 is applied to the lower surface 101b on the left side surface 101c of the non-shrinkable base material 101.

[0005] Thus, the package 100 configured as described above is formed in a substantially circular shape so as to cover the outer peripheral surface Ya of the container Y, as shown in FIG. 5(b). That is, the package 100 is bent by the heat-sealing agent 104 applied to the non-shrinkable base material 101 so that the upper surface 102b on the right side surface 102c of the shrink film 102 is attached. As a result, the state shown in FIG. 5(b) is obtained. In this state, if heat is applied to the package 100 using a toolbar, the upper surface 102b on the right side surface 102c of the shrink film 102 is attached by the heat-sealing agent 104 applied to the non-shrinkable base material 101, forming an annular shape. Then, by passing the annular package 100 through a shrink tunnel, the shrink film 102 shrinks, and thus the package 100 adheres tightly to the outer peripheral surface Ya of the container Y. Thereby, the outer peripheral surface Ya of the container Y is packaged by the package 100.

[0006] Incidentally, at this time, by passing through the shrink tunnel, the shrink film 102 shrinks, and thus the outer peripheral surface Ya of the container Y is firmly held.

[0007] However, when the shrink film 102 shrinks, there is a possibility that the heat-sealing agent 104 may float or shift between the non-shrinkable base material 101, resulting in a problem of poor adhesion. Also, when heat is applied to the package 100 using a toolbar, the shrink film 102 may shrink unintentionally, causing the heat-sealing agent 104 to float or shift between the non-shrinkable base material 101, resulting in a problem of poor adhesion.

[0008] Therefore, in view of the above problems, an object of the present invention is to provide a package that can prevent poor adhesion.

Means for Solving the Problems

[0009] The object of the present invention is achieved by the following means. The reference numerals in parentheses are those of the embodiments described later, but the present invention is not limited thereto.

[0010] According to the package of claim 1, it is a package (1, 1A, 1B, 1C) for packaging a container (Y) that houses the object to be housed, a first non-shrinkable base material (2) that cannot be heat-shrunk, a shrinkable base material (shrink film 3) that can be heat-shrunk, and a second non-shrinkable base material (4) that cannot be heat-shrunk and is provided on the shrinkable base material (shrink film 3). and When packaging the container (Y), the second non-shrinking base material (4) is provided at a position where it is bonded to the first non-shrinking base material (2) when bonding the first non-shrinking base material (2) and the shrinkable base material (shrink film 3). It is characterized by this.

[0012] Please Claim 2 According to the invention of, in the package (1, 1A, 1B, 1C) described in the above claim in 1 it is characterized in that the second non-shrinkable base material (4) is formed of paper.

Effect of the Invention

[0013] Next, the effects of the present invention will be described with reference signs in the drawings. In the parentheses are the reference signs of the embodiments described later, but the present invention is not limited thereto.

[0014] According to the invention of claim 1, since a second non-shrinkable base material (4) that cannot be heat-shrunk is provided on the shrinkable base material (shrink film 3) that can be heat-shrunk, the heat shrinkage of the shrinkable base material (shrink film 3) is suppressed by this second non-shrinkable base material (4). As a result, when the first non-shrinkable base material (2) and the shrinkable base material (shrink film 3) are bonded together, it is possible to prevent the heat sealant (7) from floating or shifting due to the heat shrinkage of the shrinkable base material (shrink film 3).

[0015] Thus, according to the present invention, since it is possible to prevent the heat sealant (7) from floating or shifting, it is possible to prevent poor adhesion when the first non-shrinkable base material (2) and the shrinkable base material (shrink film 3) are bonded together.

[0016] Also, claim1 According to the invention, when packaging the container (Y), when bonding the first non-shrinking base material (2) and the shrinking base material (shrink film 3), a second non-shrinking base material (4) is provided at the location where it is bonded to the first non-shrinking base material (2). By doing so, the heat shrinkage of the shrink film 3 at the location where it is bonded to the first non-shrinking base material (2) can be restricted, so that the lifting and displacement of the heat-sealing agent (7) can be prevented. Furthermore, since the shrink film 3 will heat shrink except at the location where it is bonded to the first non-shrinking base material (2), the outer peripheral surface (Ya) of the container (Y) can be firmly held.

[0017] Furthermore, in the claims 2 According to the invention, since the second non-shrinking base material (4) is formed of paper, it can be formed of an environmentally friendly material.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0019] Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. In the following description, when indicating the up, down, left, and right directions, it refers to the up, down, left, and right as seen from the front of the illustration.

[0020] As shown in Fig. 1(a), the package 1 according to the present embodiment mainly includes a first non-shrinkable base material 2 having a rectangular cross-section, a shrink film 3 having a rectangular cross-section and performing heat shrinkage, and a second non-shrinkable base material 4 having a rectangular cross-section. The first non-shrinkable base material 2 is formed of an unstretched film such as paper (fine paper, thermal paper, art paper, coated paper, kraft paper, waterproof paper, oil-resistant paper, etc.), polyvinyl chloride (PV), polypropylene (PP), polystyrene (PS), polyethylene (PE), polyethylene terephthalate (PET), etc. Therefore, the first non-shrinkable base material 2 is formed so as not to shrink even when heated (non-heat-shrinkable).

[0021] On the other hand, the shrink film 3 is formed of a stretched film such as polyvinyl chloride (PV), polypropylene (PP), polystyrene (PS), polyethylene (PE), polyethylene terephthalate (PET), etc. Therefore, the shrink film 3 is formed so as to shrink when heated (heat-shrinkable).

[0022] Further, the second non-shrinkable base material 4 is formed of an unstretched film such as paper (fine paper, thermal paper, art paper, coated paper, kraft paper, waterproof paper, oil-resistant paper, etc.), polyvinyl chloride (PV), polypropylene (PP), polystyrene (PS), polyethylene (PE), polyethylene terephthalate (PET), etc. Therefore, the second non-shrinkable base material 4 is formed so as not to shrink even when heated (non-heat-shrinkable). Note that the second non-shrinkable base material 4 is preferably thin so as not to interfere when the package 1 is wound around a roll (not shown). Also, the second non-shrinkable base material 4 may be formed of the same material as the first non-shrinkable base material 2 or may be formed of a different material. However, the second non-shrinkable base material 4 is preferably formed of paper because it is environmentally friendly.

[0023] Thus, the first non-shrinkable base material 2 and the shrink film 3 formed in this way will be bonded together using the adhesive 5 as shown in Fig. 1(a). That is, as shown in Fig. 1(a), the adhesive 5 is applied to the lower surface 2b on the right side surface 2a of the first non-shrinkable base material 2. Then, the upper surface 3a on the left side surface 3b side of the shrink film 3 will be attached to this adhesive 5. As a result, the shrink film 3 will be bonded to the right side surface 2a side of the first non-shrinkable base material 2. Note that the adhesive 5 is formed of an ether-based, ester-based, rubber-based, acrylic-based adhesive, etc.

[0024] On the other hand, the shrink film 3 and the second non-shrinkable base material 4 will be bonded together using the adhesive 6 as shown in Fig. 1(a). That is, as shown in Fig. 1(a), the adhesive 6 is applied to the lower surface 3d on the right side surface 3c of the shrink film 3. Then, the upper surface 4a of the second non-shrinkable base material 4 will be attached to this adhesive 6. As a result, the second non-shrinkable base material 4 will be bonded to the right side surface 3c side of the shrink film 3. Note that the adhesive 6 is formed of an acrylic-based, rubber-based, silicone-based, emulsion-type, organic solvent-type, hot melt-type adhesive, etc.

[0025] By the way, on the first non-shrinkable base material 2 to which the shrink film 3 is bonded to the right side surface 2a side, as shown in Fig. 1(a), the heat sealant 7 is applied to the lower surface 2b on the left side surface 2c side.

[0026] Thus, the package 1 configured as described above is formed in a substantially circular shape so as to cover the outer peripheral surface Ya of the container Y as shown in Fig. 1(b). That is, the package 1 is bent by the heat sealant 7 applied to the first non-shrinking base material 2 so that the upper surface 3a on the right side surface 3c side of the shrink film 3 is adhered. As a result, the state shown in Fig. 1(b) is obtained. In this state, when heat is applied to the package 1 using a toolbar, the upper surface 3a on the right side surface 3c side of the shrink film 3 is adhered by the heat sealant 7 applied to the first non-shrinking base material 2, forming a ring shape. Thereby, the left side surface 2c side portion of the first non-shrinking base material 2 and the right side surface 3c side portion of the shrink film 3 are bonded together, and the package 1 becomes ring-shaped. Then, by passing the ring-shaped package 1 through a high-temperature shrink tunnel, the package 1 adheres closely to the outer peripheral surface Ya of the container Y, and thus the container Y is packaged by the package 1.

[0027] Incidentally, conventionally, when passing through the shrink tunnel or when using the toolbar, shrinkage of the shrink film 3 may cause the heat sealant 7 to float or shift relative to the first non-shrinking base material 2. However, in the present embodiment, as shown in FIG. 1(b), by providing the second non-shrinking base material 4, the floating or shifting of the heat sealant 7 is prevented. That is, the second non-shrinking base material 4 is provided on the right side surface 3c side of the shrink film 3 such that the second non-shrinking base material 4 is positioned at the portion where the left side surface 2c side portion of the first non-shrinking base material 2 and the right side surface 3c side portion of the shrink film 3 are bonded together. As a result, even when the package 1 is passed through the shrink tunnel or when the toolbar is used, the right side surface 3c side portion of the shrink film 3 where the second non-shrinking base material 4 is located is restricted from shrinking by the second non-shrinking base material 4. Therefore, when bonding the left side surface 2c side portion of the first non-shrinking base material 2 and the right side surface 3c side portion of the shrink film 3, the right side surface 3c side portion of the shrink film 3 where the second non-shrinking base material 4 is located does not shrink, so that the floating or shifting of the heat sealant 7 can be prevented. Note that the shrink film 3 other than the right side surface 3c side portion of the shrink film 3 where the second non-shrinking base material 4 is located will thermally shrink, so that the outer peripheral surface Ya of the container Y will be firmly held. Therefore, the outer peripheral surface Ya of the container Y is packaged by the package 1. The container Y contains, as the items to be contained, bento, prepared vegetables, noodles, and various other foods.

[0028] Thus, according to the present embodiment described above, since the heat-shrinkable shrink film 3 is provided with the second non-shrinking base material 4 that is not heat-shrinkable, the heat shrinkage of the shrink film 3 is suppressed by the second non-shrinking base material 4. As a result, when bonding the first non-shrinking base material 2 and the shrink film 3, the floating or shifting of the heat sealant 7 caused by the thermal shrinkage of the shrink film 3 can be prevented.

[0029] Thus, according to the present embodiment, since the floating or displacement of the heat-sealing agent 7 can be prevented, the adhesion failure when bonding the first non-shrinking base material 2 and the shrink film 3 can be prevented.

[0030] Note that the shapes and the like shown in the present embodiment are merely examples, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. For example, in the present embodiment, an example is shown in which the second non-shrinking base material 4 is provided on the shrink film 3 so that the second non-shrinking base material 4 is located at a position where the left side surface 2c side portion of the first non-shrinking base material 2 and the right side surface 3c side portion of the shrink film 3 are bonded. However, it is not limited thereto, and the second non-shrinking base material 4 may be extended and the second non-shrinking base material 4 may be provided over the entire or substantially the entire lower surface 3d of the shrink film 3. However, in this case, when heat is passed through the package 1 in the shrink tunnel, since the shrink film 3 hardly shrinks due to the second non-shrinking base material 4, the outer peripheral surface Ya of the container Y may not be firmly held. Therefore, it is preferable to provide the second non-shrinking base material 4 on the shrink film 3 so that the second non-shrinking base material 4 is located at a position where the left side surface 2c side portion of the first non-shrinking base material 2 and the right side surface 3c side portion of the shrink film 3 are bonded.

[0031] Also, in the present embodiment, an example is shown in which the adhesive 5 is used when bonding the shrink film 3 to the right side surface 2a side of the first non-shrinking base material 2. However, it is not limited thereto, and the pressure-sensitive adhesive 6 may be used. However, when covering the outer peripheral surface Ya of the container Y, the right side surface 2a side portion of the first non-shrinking base material 2 to which the shrink film 3 is bonded may be located at the corner of the container Y. Thus, by contacting the corner of the container Y, the shrink film 3 attached to the first non-shrinking base material 2 may be peeled off, or the pressure-sensitive adhesive 6 may protrude outside. Therefore, it is preferable to use the adhesive 5 when bonding the shrink film 3 to the right side surface 2a side of the first non-shrinking base material 2.

[0032] In addition, in this embodiment, an example in which the second non-shrinking base material 4 is bonded to the right side surface 3c side of the shrink film 3 using the adhesive 6 has been shown. However, the present invention is not limited to this, and the adhesive 5 may be used instead.

[0033] In addition, in this embodiment, an example in which the second non-shrinking base material 4 is provided on the lower surface 3d of the right side surface 3c side of the shrink film 3 has been shown. However, the present invention is not limited to this, and the second non-shrinking base material 4 may be provided at any position of the shrink film 3. For example, as in the package 1A shown in FIG. 2, the second non-shrinking base material 4 may be provided on the upper surface 3a of the right side surface 3c side of the shrink film 3.

[0034] In addition, in this embodiment, an example in which the heat sealant 7 is applied to the lower surface 2b of the left side surface 2c side of the first non-shrinking base material 2 has been shown. However, the present invention is not limited to this, and the heat sealant 7 may be applied anywhere. For example, as in the package 1B shown in FIG. 3, it may be applied to the upper surface 3a of the right side surface 3c side of the shrink film 3, or as in the package 1C shown in FIG. 4, it may be applied to the second non-shrinking base material 4.

Explanation of Signs

[0035] 1, 1A, 1B, 1C Package 2 First non-shrinking base material 3 Shrink film (shrinking base material) 4 Second non-shrinking base material 7 Heat sealant Y Container Ya Outer peripheral surface

Claims

1. A package for packaging a container that houses an object to be housed, comprising: a first non-shrinkable base material that cannot be heat-shrunk; a shrinkable base material that can be heat-shrunk; a second non-shrinkable base material that cannot be heat-shrunk and is provided on the shrinkable base material; The second non-shrinkable base material is provided at a location where the first non-shrinkable base material is bonded to the shrinkable base material when the container is packaged, and the first non-shrinkable base material and the shrinkable base material are bonded together.

2. The package according to claim 1, wherein the second non-shrinkable base material is formed of paper.

Images