JP3174559B1 - Rust prevention packaging material - Google Patents

Abstract

An object of the present invention is to provide a rust-preventive packaging material having an extremely high rust-preventing effect by preventing even local dew condensation. SOLUTION: A gas-permeable first planar material 2 such as a plastic film having a large number of small holes and a second planar material 3 having a lower gas permeability than the first planar material 2 are provided. A large number of cells 4 are stacked on at least one of the planar objects.
Was formed, and the inside of the cell 4 was filled with the vaporizable rust inhibitor 5 and the moisture absorbent 6, and the cell 4 was closed by the other planar material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material used for packing metal products, and more particularly to a rust-preventive packaging material capable of suitably preventing rust in a packaged metal product.

[0002]

2. Description of the Related Art Metal products are vulnerable to moisture and may rust during transportation and storage. For this reason, oil paper has long been used as a packaging material for metal products. In recent years, plastic films have been widely used as packaging materials. In particular, plastic films that have been subjected to aluminum deposition (aluminum-deposited sheets) have high airtightness,
Since hermetically sealed packaging is possible, the incidence of rust in the packaged metal product can be reduced by preventing the invasion of high humidity outside air or moisture as a liquid.
However, even when the package is hermetically sealed with an aluminum vapor-deposited sheet, rust may be generated due to moisture in the air sealed inside together with the metal product. For this reason, a contrivance has been made to enclose a desiccant (hygroscopic agent) at the time of packaging.

[0003] Further, a vaporizable rust preventive paper obtained by impregnating a paper or synthetic paper with a vaporizable rust preventive, or a plastic film (vaporizable rust preventive film) obtained by kneading a base material with a vaporizable rust preventive in advance. ) Is well-known as a technique for using a metal material as a packaging material. Such a packaging material was packaged by the rust preventive vaporizing at room temperature and filling the inside of the package, and the vaporized rust preventive component adhered to the surface of the metal product to form a rust preventive film. There is an advantage that the rust-preventing effect of the metal product can be maintained for a long time.

[0004]

However, even if the package is hermetically sealed with an aluminum vapor-deposited sheet and a desiccant is enclosed inside the package, local dew condensation occurs on the inner surface of the package due to a temperature difference between the inside and the outside of the package. May occur. Even when condensation forms locally, rust easily occurs when the moisture contacts the metal product as a liquid. The same applies to the case where metal products are wrapped using vaporizable rust-proof paper or vaporizable rust-proof film. If they come into contact with each other in such a state, the rust preventive coating may be destroyed and rust may be generated.

Further, since the vaporizable rust preventive film is heated at the time of molding, the vaporization of the rust preventive agent previously kneaded in the base material is promoted. There is a problem that a suitable rust prevention effect cannot be obtained in a finished product, that is, a loss of rust prevention components occurs in a manufacturing process.

The present invention has been made in order to solve such a problem in the conventional packaging material, and there is almost no loss of a rust-preventive component in a manufacturing process, and a vaporizable rust-preventive agent and a desiccant are packaged. By providing a packaging material having an extremely high rust-preventive effect, it is possible to prevent even local dew condensation by arranging it over the entire area of the material or by arranging only a part as necessary. Aim.

[0007] In order to solve the above-mentioned problems, the packaging material according to the present invention is made of a permeable first surface such as woven fabric, paper, or plastic film (preferably non-woven fabric) having many small holes. Object and a second planar object having a lower air permeability than the first planar object, a large number of cells are formed on at least one of the planar objects, and the inside of the cell is formed. Filling a vaporizable rust inhibitor and a hygroscopic agent, and closing the cell with the other planar material , the vaporizable rust inhibitor
And the desiccant, respectively, over almost the entire surface of the packaging material
It is characterized in that it is configured to be evenly arranged .

As the second planar material, a material obtained by kneading a vaporizable rust inhibitor in advance can be used. In this case, the outer surface of the second planar material (ie, the second planar material) The surface of the sheet is opposite to the surface to be bonded to the first sheet, alumina or silica is vapor-deposited on the sheet to lower air permeability than the second sheet. It is preferable to provide a barrier layer, and for the vaporizable rust preventive to be filled in the inside of the cell, a part or all of the rust preventive may be replaced with a hygroscopic agent or may be omitted.

Further, a material which has been impregnated with a vaporizable rust inhibitor in advance, or a material which has been kneaded with a vaporizable rust inhibitor in advance and then molded, is not a second planar material but a first material. In this case, as for the vaporizable rust preventive to be filled in the inside of the cell, a part or the whole thereof can be replaced with a hygroscopic agent or can be omitted.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a first embodiment of a packaging material 1 according to the present invention. As shown in this figure, the packaging material 1 of the present invention has a first planar material 2 and a second planar material 2.
Are laminated (that is, laminated) to form a sheet.

The first planar material 2 is formed of a plastic film (polyethylene film, polypropylene non-woven fabric, etc.) having a large number of small holes and having air permeability. Many cells 4 are formed. Then, as shown in the cross-sectional view of FIG. 2, the insides of these cells 4 are filled with a vaporizable rust preventive agent 5 and a moisture absorbent 6, respectively. On the other hand, the second planar object 3 is formed of a plastic film (such as a polyethylene film) having a lower air permeability than the first planar object 2, and is bonded to the first planar object 2. , The cell 4 is closed.

Examples of the vaporizable rust inhibitor 5 filled in the cell 4 include butynediol, dicyclohexylammonium nitrite (DICHAN), dicyclohexylammonium cabrate, cyclohexylamine carbamate (CHC), and cyclohexylammonium. Laurate, diisopropylammonium nitrite (DIPAN), nitronaphthalin ammonium nitrite (NITAN), benzotriazole (BTA), tolyltriazole (TTA) and the like are appropriately selected and used according to their properties and applications. be able to.

Examples of the moisture absorbent 6 include magnesium oxide-based moisture absorbent, clay-based moisture absorbent, silica gel,
It can be appropriately selected from quick lime, calcium chloride and the like, or a combination of any two or more of these can be used.

In the present embodiment, the vaporizable rust preventive 5 and the moisture absorbent 6 are arranged so as to be evenly distributed over substantially the entire surface of the packaging material 1. For example, as shown in FIG. 2, when the cell 4a is filled with the vaporizable rust inhibitor 5, the cell 4b adjacent to the cell 4a is filled with the hygroscopic agent 6, and the cell 4c adjacent thereto is further filled. It is preferable that the vaporizable rust preventive agent 5 and the moisture absorbent 6 are alternately arranged such that the vaporizable rust preventive agent 5 is filled.

However, the vaporizable rust inhibitor 5
And the hygroscopic agent 6 do not have to be alternately arranged for each cell 4, but if they are arranged so as to be substantially evenly distributed over the entire surface of the packaging material 1, they are adjacent to each other. The two cells 4 are filled with the vaporizable rust preventive agent 5, and one cell 4 (or two cells 4 including the cell 4 adjacent thereto) adjacent thereto is filled with the desiccant 6. May be constituted, and a vaporizable rust inhibitor 5
A configuration in which a mixture of water and the hygroscopic agent 6 at a predetermined ratio may be filled in all the cells 4.

The ratio of the area where the cells 4 are formed on one surface of the packaging material 1 is preferably 70% or more of the entire packaging material 1, but it is substantially even over substantially the entire surface of the packaging material 1. If placed, 35% of the total (~ 70
%). Further, when the site where the probability of dew condensation is likely to be high is only a part of the entire packaging material 1, the cell 4 is provided only in that part, or the emphasis is placed on the part, The cells 4 may be arranged at a higher density than other parts.

Here, using the packaging material 1 having such a structure,
A method for packaging a metal product will be briefly described. First, a packaging material 1 having a structure as shown in FIG. 1 is formed in a predetermined size, and as shown in FIG. Then, the bag body 7 is formed by bonding the two sides (A and B in FIG. 3). The metal product 8 is housed inside the bag body 7 and the side C is adhered to seal the metal product 8. In this embodiment, both the first planar object 2 and the second planar object 3 are:
Since it is formed of plastic film, A
To C can be easily bonded and sealed by heat sealing or the like.

Further, the bag 7 is prepared by preparing two packaging materials 1 formed in a predetermined size, and superimposing them so that the air-permeable first planar materials 2 are respectively inside. The sides may be formed by bonding, or the packaging material 1 and a sheet-like member having low air permeability (for example, a plastic film similar to the second planar material 3) may be prepared one by one. Alternatively, the wrapping material 1 may be formed by superimposing the air-permeable first sheet-like material 2 on the inside with a sheet member having low air permeability, and bonding each side thereof.

Next, the rust-preventing action when the metal product 8 is packaged by the method as shown in FIG. 3 will be described. First,
The metal product 8 is stored and sealed inside the bag 7 made of the packaging material 1, and after a predetermined time has elapsed, the rust-preventive component of the vaporizable rust-preventive agent 5 in the cell 4 gradually evaporates. At this time, since the bag body 7 is configured such that the first planar material 2 having air permeability is on the inside, the vaporized rust preventive component passes through the first planar material 2, The inner space of the bag 7 will be filled. On the other hand, since the second planar material 3 constituting the outer portion of the bag body 7 is formed of a plastic film having low air permeability, the rust-preventive component vaporized in the cell 4 contains the second planar material 3. Can be prevented from being discharged to the outside of the bag body 7 through the airbag.

The vaporized rust-preventive component adheres to the inside of the bag 7 up to the finely shaped portion of the surface of the metal product 8, forming a rust-preventive coating on the entire surface.
The generation of rust on the surface of the substrate is suitably prevented. Further, as described above, the bag body 7 is sealed after storing the metal product 8, and the second planar object 3 forming the outer portion of the bag body 7
Is made of a plastic film having low air permeability, so that invasion of outside air into the bag body 7 can be prevented.

Further, since the cell 4 is filled with the hygroscopic agent 6, the moisture in the air inside the bag body 7 is absorbed by the hygroscopic agent 6 through the air-permeable first planar material. And
Rust generation in the metal product 8 can be suppressed. The cells 4 are arranged over substantially the entire surface of the wrapping material 1 forming the bag 7, and since the moisture absorbents 6 are evenly arranged in these cells 4, fluctuations in the outside air temperature may occur. It is also possible to suitably suppress the occurrence of local dew due to the above. Further, as described above, since the second planar material 3 constituting the outer portion of the bag 7 is formed of a plastic film having low air permeability, the moisture absorbing material 6 in the cell 4 is not formed.
However, it is possible to prevent waste such as absorbing water in the outside air.

In this embodiment, since the cell 4 is filled with the hygroscopic agent 6, or the rust preventive agent 5 and the hygroscopic agent 6, the material of the packaging material 1 has to be transparent. Regardless, the inside of the package cannot be seen through from the portion where the cell 4 is formed, but the first planar object 2 and the second planar object 2
When each of the planar materials 3 is formed of a material having transparency, the inside of the packaging material 1 can be seen from a portion other than the portion where the cells 4 are formed, and the packaging can be performed. The object to be packaged can be confirmed from outside without unraveling. Further, when a bag formed by laminating a sheet-like member having low air permeability and having transparency and a packaging material 1 as shown in FIG. 1 is used, the packaging material 1 is transparent. Even if it is formed of a material having no property, it can be visually confirmed from the side of the transparent sheet-shaped member.

When it is necessary to check the contents of the packaged item such as at the time of customs clearance, if the packaged item cannot be checked with the naked eye from outside, the package may be broken by a customs officer or the like. However, if it is hermetically sealed packaging, the package will be broken and the rust prevention effect of hermetic packaging will not be expected, and the possibility of rusting in the subsequent transport process will increase . Therefore, as described above, if the packaged object is configured to be visually checked from the outside, it is possible to avoid the generation of rust caused by the unpacking of the package. .

Next, a second embodiment of the packaging material 1 according to the present invention will be described. In the present embodiment, first,
The packaging material 1 formed in a predetermined size as shown in FIG. 1 is placed in the outer box 9 with the cell 4 inside as shown in FIG. Then, a metal machine such as an engine is housed inside, and the upper part is closed by attaching a lid 9a as shown in FIG. At this time, each packaging material 1
May be configured so that the outside air does not enter the inner space surrounded by the packaging material 1 by airtightly bonding each side. It is also possible to arrange a bag made of plastic and expand it in the outer box 9, and arrange the packaging material 1 inside the bag so as to be in a state as shown in FIG. 4 so as to prevent invasion of outside air.

A part of the packaging material 1 (for example, a part E located near the lid 9a of the outer box 9 in FIG.
If it is formed of a transparent material (plastic film or the like) that does not have the wrapping material, it is possible to visually check the packaged object without breaking the packaging material 1 by simply opening the lid 9a at the time of customs clearance or the like.

When the metal product is packaged by such a method, the rust preventive effect of the vaporizable rust preventive agent 5 and the hygroscopic material 6 can be expected as in the first embodiment. Further, also in the present embodiment, it is possible to prevent local dew condensation inside the package. This will be described in more detail.

If a gap (or hole) 10 is formed in the bottom plate 9b of the outer case 9 as shown in FIG. 5, cold air may enter through the gap 10 during transportation. In such a case, there is a possibility that local dew condensation may occur on the inner surface of the packaging material 1 and at the portion that contacts the gap 10 (the portion indicated by P in FIG. 5). However, in the present embodiment, since the cells 4 in which the hygroscopic material is sealed are arranged almost evenly over the entire packaging material 1, the moisture in the air that should adhere to the surface of the packaging material 1 as dew condensation is Therefore, it is quickly adsorbed by the hygroscopic material, thereby preventing the occurrence of dew condensation.

In addition, dew condensation occurs only when the low temperature of the cool air is transmitted from the outside of the packaging material 1 to the inside surface of the packaging material 1 (that is, the surface of the first planar material).
As shown in FIG. 3, a powdery or granular vaporizable rust inhibitor 5 and a moisture absorbing material 6 are interposed between the first planar material 2 and the second planar material 3. Therefore, these functions like a foaming material and contributes to heat insulation, thereby preventing the occurrence of dew condensation. Further, since a large number of cells 4 filled with the vaporizable rust inhibitor 5 and the like are interposed, a space having a predetermined width is formed between the article to be packaged and the outer surface of the packaging material 1. The space prevents heat radiation from the packaged object to the outside of the packaging material 1, thereby lowering the temperature of the packaged object or dew condensation on the surface of the packaged object caused by the temperature difference between the packaged object and the surrounding air. Can be prevented.

Further, the cell 4 filled with the powdery / granular vaporizable rust preventive agent 5 and the hygroscopic material 6 functions like a sandbag and also has a force to reduce impact. Therefore, even if an impact is applied to the outer box 9 during transportation, it is possible to reduce damage to the metal products packaged inside.

The packaging material according to the present invention is not limited to the configuration described in the above embodiment. For example, the cell is formed not on the first sheet but on the second sheet. It may be configured so that it may be formed on both the first planar object and the second planar object, and the shape of the cell may be, for example, Hemispherical,
It may be trapezoidal. Further, the first planar object may be formed of woven cloth, paper, or the like.

The first planar material may be constituted by a porous plastic film (polyethylene film, polypropylene nonwoven fabric, etc.), woven fabric, paper, etc. formed by impregnating or kneading a vaporizable rust inhibitor in advance. good. in this case,
The cell may contain both a vaporizable rust preventive and a moisture absorbent, but the vaporizable rust preventive may be omitted and only the moisture absorbent may be filled.

As shown in FIG. 6, one side of a plastic film (vaporizable rust-preventive film 11) formed by kneading a vaporizable rust-preventive agent on a base material in advance is further permeable to air than the plastic film. One provided with a low barrier layer 12 is laminated as a second planar object 3 with the first planar object 2,
The cell 4 may be configured to enclose only the moisture absorbent 6. The barrier layer 12 is formed by laminating a sheet material having low air permeability (for example, a metal foil or a plastic film) on one surface of the vaporizable rust-preventive film 11 or by coating a liquid or gaseous substance on one surface of the vaporizable rust-preventive film 11. It can be formed by coating or vapor-depositing on a substrate. In this case, as the substance to be deposited, carbon, aluminum, alumina or silica is suitable for the purpose of the present invention.

Further, when a strength member such as a split cloth is laminated on the second planar material, a packaging material having higher strength can be obtained, and the second planar material can be made of polyethylene foam or the like. In the case of a foam or a foam attached to the second planar material, higher heat insulation and cushioning properties can be added.

[0034]

As described above, the packaging material according to the present invention can also prevent local dew condensation.
The rust prevention effect of the packaged metal product is extremely high, and the effect can be maintained for a long period of time. Furthermore, it has a shock absorbing power, protects a metal product from an external impact, and can suitably avoid a breakage accident during transportation and the like.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a first embodiment of a packaging material 1 according to the present invention.

FIG. 2 is a cross-sectional view of the packaging material 1 of FIG.

FIG. 3 is an explanatory view of a method for packaging a metal product using the packaging material 1 of FIG. 1;

FIG. 4 is a partially cutaway perspective view of a second embodiment of the packaging material 1 according to the present invention.

FIG. 5 is a sectional view taken along line DD of FIG. 4;

FIG. 6 is a sectional view of a third embodiment of the packaging material 1 according to the present invention.

[Explanation of symbols]

 1: packaging material, 2: first planar material, 3: second planar material, 4: cell, 5: vaporizable rust inhibitor, 6: moisture absorbent, 7: bag, 8: metal product, 9: outer box, 10: gap, 11: vaporizable rust preventive film, 12: barrier layer

Claims (3)

(57) [Claims] An air-permeable first planar material and a second planar material having a lower air permeability than the first planar material are laminated, and at least one of the planar materials is laminated. A packaging material formed by forming a large number of cells in an object, filling the inside of the cell with a vaporizable rust inhibitor and a moisture absorbent, and closing the cell with the other planar object , A vaporizable rust inhibitor and
The wetting agent is distributed evenly over almost the entire surface of the packaging material.
A rust-preventive packaging material characterized by being configured to be placed . 2. A first sheet having air permeability and a second sheet having air permeability lower than that of the first sheet and kneaded with a vaporizable rust inhibitor in advance. A plurality of cells are formed on at least one of the planar objects, a hygroscopic agent is filled in the cells, the cells are closed by the other planar object, and the second surface is closed. A packaging material provided with a barrier layer having a lower air permeability than the second planar material by vapor-depositing alumina or silica on the outer surface of the packaging material, wherein the moisture absorbent is provided on substantially the entire surface of the packaging material. A rust-preventive packaging material characterized in that the rust-preventive packaging material is arranged so as to be evenly distributed over the entire area. 3. A surface on which cells are formed on one surface of a packaging material.
The ratio of the product is 35% or more of the whole packaging material
The rust-preventive packaging material according to claim 1 or 2 .