Aluminum Package

Abstract

To provide an aluminum package that significantly improves the storage durability of disaster prevention goods contained therein. [Solution] The aluminum package of this invention is a three-layer aluminum package consisting of a polypropylene layer (oriented polypropylene) that forms the outermost layer of the aluminum package, a polyethylene layer (PE) that forms the innermost layer of the aluminum package, and an aluminum layer (aluminum foil) that is sandwiched between the polypropylene layer and the polyethylene layer and forms the middle layer.

Description

[Technical Field]

[0001] This invention relates to an aluminum package that enables long-term storage of disaster prevention goods, for example. [Background technology]

[0002] In recent years, with the rise in disaster prevention awareness, it has become common for each household and building to have disaster prevention supplies on hand. Disaster prevention supplies can be broadly divided into food and other items. There are many other types of disaster prevention supplies, but among them, cold weather items such as aluminum blankets, aluminum sleeping bags, and aluminum ponchos are often kept as necessities. These disaster prevention supplies are often stored in plastic bags, cloth bags, or aluminum packaging in a disaster prevention backpack or disaster prevention bag.

[0003] In the case of food, expiration dates are often taken into consideration, and users take measures such as replacing them regularly, but when it comes to disaster preparedness items other than food, few users are concerned about storage dates, etc. As a result, disaster preparedness items other than food can deteriorate over time without users realizing it, and they may no longer be able to perform as expected. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3212091 [Patent Document 2] Patent Publication No. 2021-195712 Summary of the Invention [Problem to be solved by the invention]

[0005] The technology described in Patent Document 1 relates to aluminum pouches for packaging instant noodles, but does not take into consideration disaster prevention goods other than food. The technology described in Patent Document 2 relates to an aluminum sheet that can also be used as cold weather clothing to provide emergency protection from the cold in disaster evacuation shelters, etc., but does not take into consideration how to store it.

[0006] The present invention was made in consideration of these circumstances, and aims to provide an aluminum package that significantly improves the storage durability of the disaster prevention goods contained therein. [Means for solving the problem]

[0007] In order to solve the above problems, the aluminum package of the present invention is an aluminum package with a three-layer structure, consisting of a polypropylene layer that forms the outermost layer of the aluminum package, a polyethylene layer that forms the innermost layer of the aluminum package, and an aluminum layer that is sandwiched between the polypropylene layer and the polyethylene layer and forms the middle layer.

[0008] With this configuration, the storage durability of the disaster prevention goods stored therein can be significantly improved, and the sand-proof goods can be stored for a long period of time.

[0009] In the aluminum package according to the present invention, the aluminum layer may be formed of aluminum foil.

[0010] This configuration improves gas barrier properties, moisture resistance, and aroma retention, and also makes it possible to block ultraviolet and infrared rays.

[0011] In the aluminum package of the present invention, the polypropylene layer may be oriented polypropylene, and the polyethylene layer may be cast polypropylene.

[0012] This configuration makes it possible to combine the best of the unique effects of oriented polypropylene (OPP) and EP. [Effects of the Invention]

[0013] The aluminum package of this invention adopts a three-layer structure with an aluminum layer as the middle layer, which significantly improves the storage durability of the disaster prevention goods stored inside, making it possible to store sand-proof goods for a long period of time. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view showing an aluminum package according to an embodiment of the present invention; [Figure 2] 1 is a development view showing an aluminum package according to an embodiment of the present invention in an unfolded state; DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a front view of an aluminum package according to an embodiment of the present invention (hereinafter referred to as aluminum package 100). Fig. 2 is an exploded view of aluminum package 100.

[0016] The aluminum package 100 is designed to house disaster prevention goods (particularly aluminum products such as aluminum blankets, aluminum sleeping bags, and aluminum ponchos) and significantly improves the storage durability of the disaster prevention goods housed therein. Note that the size and volume of the aluminum package 100 are not limited to those described below, but can be changed as appropriate depending on the disaster prevention goods housed therein.

[0017] 1, the aluminum package 100 has a rectangular shape when viewed from the front. The aluminum package 100 has an upper portion 101 that functions as an opening for inserting and removing disaster prevention goods, a lower portion 102 that forms the bottom surface of the aluminum package 100, a storage portion 105 located between the upper portion 101 and the lower portion 102 and in which the disaster prevention goods are stored, and an edge portion 108 that forms the outer periphery of the aluminum package 100.

[0018] Cutouts 107 are formed in parts of both sides of upper part 101. When a user applies force to cutouts 107, upper part 101 is cut in the horizontal direction of the paper, and the top end of upper part 101 is cut off. When the top end of upper part 101 is cut off, storage section 105 becomes accessible, allowing disaster prevention goods to be put in and taken out. In addition, a through hole 109 is formed in the top end of upper part 101, so that a hook or the like can be inserted therethrough.

[0019] A seal 106 that can be freely opened and closed is formed between the upper portion 101 and the storage portion 105. The seal 106 is formed to ensure that the storage portion 105 remains sealed even after the top end of the upper portion 101 is cut off.

[0020] As shown in FIG. 2, the aluminum package 100 is composed of a single aluminum sheet 100A. The aluminum sheet 100A has a front portion 10 that forms the front surface of the aluminum package 100, a back portion 30 that forms the back surface of the aluminum package 100, and a bottom portion 20 that connects the front portion 10 and the back portion 30 and forms the bottom surface of the aluminum package 100. The front portion 10 and the back portion 30 are configured as one body. The gusset of the bottom portion 20 (the distance between the front portion 10 and the back portion 30) is determined depending on the volume of the aluminum package 100. In other words, the gusset may or may not be present.

[0021] The aluminum package 100 is formed by folding the front portion 10 and the back portion 30 via the bottom portion 20 and adhering the edges 108. Adhering the edges 108 forms the upper portion 101, the storage portion 105, and the lower portion 102 of the aluminum package 100. More specifically, the aluminum sheet 100A is bendable at a first boundary 40 between the front portion 10 and the bottom portion 20 and at a second boundary 50 between the back portion 30 and the bottom portion 20. By folding the first boundary 40 and the second boundary 50 in the same direction, the front portion 10 and the back portion 30 face each other, forming the aluminum package 100.

[0022] The aluminum sheet 100A has a three-layer structure. When the aluminum package 100 is formed, the portion (outermost layer) that will become the surface of the aluminum package 100 is made of a polypropylene layer. When the aluminum package 100 is formed, the portion (innermost layer) that will become the back surface of the aluminum package 100 is made of a polyethylene layer. The middle layer sandwiched between the polypropylene layer and the polyethylene layer is made of an aluminum layer.

[0023] The aluminum layer that makes up the intermediate layer is made of aluminum foil (a thin sheet of aluminum only). The aluminum layer may also be formed by vapor-depositing aluminum onto a resin such as polyethylene terephthalate (PET). The polypropylene layer constituting the outermost layer is made of oriented polypropylene (OPP). The polyethylene layer that constitutes the innermost layer is made of polyethylene (PE).

[0024] Polyethylene terephthalate (PET) is well known as the material used in plastic bottles. It is also widely used in industrial applications and is a versatile resin material. An aluminum layer can be formed by heating and evaporating aluminum onto the PET under high vacuum conditions, and then depositing the vapor onto the surface (deposition). In other words, a thin aluminum film attached to the PET can be used as the aluminum layer. In this case, the aluminum layer has highly efficient gas barrier properties, moisture resistance, and aroma retention, as well as the ability to block ultraviolet and infrared rays.

[0025] Like PET, polypropylene and polyethylene layers are also common resin materials. Among them, Aluminum Sheet 100A uses Oriented Polypropylene (OPP) for the polypropylene layer and PE for the polyethylene layer.

[0026] Oriented polypropylene (OPP) is characterized by its high moisture resistance, high heat resistance (maximum 120°C to 130°C), high transparency, and high productivity. In addition, oriented polypropylene (OPP) accepts printing ink well, making it the ideal material for forming the surface of the aluminum package 100. Oriented polypropylene (OPP) is generally made by stretching it biaxially, so one of its characteristics is that the material has stiffness. Note that printing is done on the reverse side (inside) of the outer OPP.

[0027] Therefore, by using Oriented Polypropylene (OPP) as the first polypropylene layer, it has strong resistance to pulling, so the stored disaster prevention goods are less likely to be damaged. It also has high moisture resistance, so the stored disaster prevention goods are less likely to be affected by moisture. Furthermore, it has high heat resistance, so the stored disaster prevention goods are less likely to be deformed by heat. It also has the characteristics of being suitable for mass production, with high productivity and low costs.

[0028] PE is highly resistant to many chemicals, including hydrochloric acid, hypochlorous acid, sulfurous acid, ammonia, alcohol, citric acid, acetic acid, sodium peroxide, and kerosene, especially at room temperature, making it suitable for storing everyday items and disaster prevention supplies. It also has excellent insulating and waterproof properties, allowing for stable, long-term hygiene. It also has excellent cold resistance. Note that CPP may be used instead of PE. Cast Polypropylene (CPP) is characterized by high abrasion resistance, high heat resistance (maximum 120°C to 130°C), high productivity, and high heat sealing properties (high barrier properties). Furthermore, unlike Oriented Polypropylene (OPP), which is made by biaxial stretching, Cast Polypropylene (CPP) is made without processing polypropylene. Therefore, Cast Polypropylene (CPP) is soft and stretches when stretched.

[0029] Therefore, by using PE as a polyethylene layer, the strength against tension and tearing is improved compared to oriented polypropylene (OPP), and it also exhibits higher abrasion resistance.

[0030] Since the aluminum sheet 100A is formed from three layers of aluminum, polypropylene, and polyethylene made of these materials, the storage durability of disaster prevention goods stored in the aluminum package 100 is greatly improved.

[0031] As described above, the aluminum package 100 is composed of a polypropylene layer that forms the outermost layer, a polyethylene layer that forms the innermost layer, and an aluminum layer that is sandwiched between the polypropylene and polyethylene layers and forms the middle layer.

[0032] With this configuration, the storage durability of the stored disaster prevention goods can be significantly improved, making it possible to store the disaster prevention goods for a long period of time.

[0033] The aluminum of the aluminum package 100 is made of aluminum foil. This configuration improves gas barrier properties, moisture resistance, and aroma retention, and also makes it possible to block ultraviolet and infrared rays.

[0034] Furthermore, the polypropylene layer of the aluminum package 100 is oriented polypropylene, and the polyethylene layer is oriented polypropylene. With this configuration, it is possible to achieve both the effects unique to oriented polypropylene (OPP) and the effects unique to EP.

[0035] Although the embodiments of the present invention have been described above, the modifications of these embodiments and their respective parts are presented as examples and are not intended to limit the scope of the invention. These novel embodiments described above can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions described in the scope of the utility model registration claims. [Industrial Applicability]

[0036] As described above, the aluminum package of the present invention can significantly improve the storage durability of the disaster prevention items contained therein, allowing the disaster prevention items to be stored for a long period of time and making it easier for users to manage their disaster prevention items. [Explanation of symbols]

[0037] 10 Front 20 Bottom part 30 Rear part 40 First Boundary 50 Second Boundary 100 aluminum packages 100A Aluminum Sheet 101 Upper 102 Lower 105 Storage unit 106 Seal part 107 Notch 108 Edge 109 Through Hole

Claims

1. A three-layer aluminum package, a polypropylene layer constituting the outermost layer of the aluminum package; a polyethylene layer constituting the innermost layer of the aluminum package; an aluminum layer sandwiched between the polypropylene layer and the polyethylene layer and constituting an intermediate layer; Aluminum package.

2. The aluminum layer is Made from aluminum foil The aluminum package according to claim 1 .

3. the polypropylene layer is oriented polypropylene, The polyethylene layer is PE. The aluminum package according to claim 1 or 2.

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