JPH06247436A - Corrosion-proof and rustproof packing container for metal product - Google Patents

Abstract

PURPOSE:To eliminate a need of coating grease or rustproof oil, to prevent corrosion of metal products for a long time, to shorten a packing process and to decrease packing cost. CONSTITUTION:The title packing container is formed of a body container A which is made of a cylinder having a laminated structure in which a long-belt- shaped craft paper 1 is wound spirally in a plurality of layers and sealed at one end with a bottom plate 2, and a lid member B which is made of a cylinder having a laminated structure in which a long-belt-shaped craft paper 1 is wound spirally in a plurality of layers and formed to be able to engage with an opening end of the body container A. The innermost layer of both of the body container A and the lid member B is made of a craft paper coated with volatile rust proof resinous film 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrosion and rustproof packaging container for metal products.

[0002]

2. Description of the Related Art Corrosion of metal products occurs in each process of manufacturing, shipping and storage, and at present, as a countermeasure against this, grease or rust preventive oil is applied to the metal surface. For example, in the rust preventive oil application process, first attach tags to the metal products and sort them into the packing order, put them in a rust preventive pallet and immerse them in a rust preventive oil tank containing the rust preventive oil. Take it out from the pallet and hang it on the oil drainer truck.
After leaving it for a while, the operator wipes off the residual oil, replaces it with a new tag, and then packages and ships it.

[0003]

However, these methods have a number of work steps, are wasteful, and have a problem with health problems such as deterioration of the work environment on site. In addition, the receiving company has a waste of cleaning work such as rust preventive oil, which is a problem in terms of labor and cost.

On the other hand, regarding packaging of metal products, a desiccant for packaging (for example, silica gel) is put in the container during transportation or until completion of on-site installation in order to protect it from corrosion due to moisture. Corrosion prevention effect is not sufficient. In addition, there are some packagings that have been waterproofed,
This merely prevents the intrusion of water from the outside, and does not have a corrosion preventing effect on the atmosphere in the container. Therefore, even when a metal product is packaged in such a waterproof container, rust preventive oil or the like is applied to the metal product.

The present invention has been proposed in view of the above problems of the prior art, and an object thereof is to eliminate the need for applying grease or rust preventive oil, and to prevent corrosion of metal products for a long period of time. It is an object of the present invention to provide a corrosion-resistant and rust-proof packaging container for metal products, which can prevent, shorten the packaging process, and reduce the packaging cost.

[0006]

In order to achieve the above object, the present invention comprises a main body container which is composed of a cylindrical body having a laminated structure in which a long strip of kraft paper is spirally wound into a plurality of layers, and a bottom plate is attached to one end of the cylindrical body. And a cover member that is composed of a long belt-shaped kraft paper spirally wound into multiple layers and laminated in a shape that can be fitted to the open end side of the main body container, and has a top plate attached to one end to seal it. The innermost layer of the main body container and the lid member is made of kraft paper having an inner surface coated with a volatile anticorrosive resin film.

[0007]

According to the present invention, since the inner surface of the main body container and the lid member is the coating layer of the volatile anticorrosive resin film, the anticorrosive gas which is spontaneously vaporized from the coating layer is applied to the main body container and the lid member. The sealed space is filled with an inert atmosphere to prevent corrosion and rusting of metal products contained in this space.

The vaporizable anticorrosive resin film has an effective period of one year or more (self-life of 5 years) and retains the anticorrosive action for a long period of time. In addition, the volatile anticorrosion resin film is
Since the innermost layer of the main body container and the lid member is coated only on the inner surface of the kraft paper, and the amount of use is the minimum necessary, the manufacturing cost of the packaging container can be reduced. Moreover, since the main body container and the lid member are made of a laminated structure in which kraft paper is spirally wound into multiple layers, the seams are continuous in a spiral shape, have high rigidity, and also have a cushioning function It is suitable as a packaging container.

[0009]

1 is a vertical sectional side view showing an embodiment of a packaging container of the present invention, (A) showing a main container and (B) showing a lid member.

As shown in FIG. 2, the main body container (A) is composed of a cylindrical body having a laminated structure in which a long strip of kraft paper (1) is spirally wound into a plurality of layers, and a bottom plate (2) is attached to one end thereof. It consists of a sealed structure. FIG. 2 exemplifies a case where three long strips of kraft paper (1) are used, and the innermost layer of kraft paper (1a) and the intermediate layer of kraft paper (1b) are wound in a butt-shape. The outermost kraft paper (1c) is wound so that the seams overlap each other, and the seam of the innermost kraft paper (1a) is covered with the middle kraft paper (1b). In order to cover the seam of the kraft paper (1b) with the outermost kraft paper (1c), the width of the kraft paper is made wider toward the outside,
In addition, an adhesive is appropriately applied to the inner surfaces of the intermediate layer kraft paper (1b) and the outermost layer kraft paper (1c).
On the inner surface of the innermost layer of kraft paper (1a), as shown in FIG.
As shown in (3), a vaporizable anticorrosive resin film (3) is coated.

The volatile anticorrosion resin film (3) is a fusion of polyethylene resin mixed with Zelast (trade name) which has the property of preventing corrosion of metal products and anticorrosive action by evaporating anticorrosion gas. It is a kraft paper coated on one side.

The inner diameter of the laminated cylindrical body manufactured according to the procedure shown in FIG. 2 is determined by the mandrel (4), and the mandrel (4) depends on the required inner diameter of the main body container (A).
The outer diameter of is selected. Then, this tubular body is manufactured as a long tubular body, cut into a slightly long length in accordance with the required depth of the main body container (A), and one end is rolled inward to be processed from the opening at the other end to the bottom plate ( 2) is inserted and locked to the rolled-in portion, and a sealing agent is applied to hermetically seal it, or the sealing agent is omitted to seal one end of the cylindrical body to form the main body container (A).

The bottom plate (2) is made of a kraft paper laminate, and the inner surface of the bottom plate (2) is coated with a vaporizable rust preventive resin film (3).

The lid member (B) is manufactured in the same manner as the case of the main body container (A), the inner diameter of which is slightly larger than the outer diameter of the main body container (A), and the depth thereof is Is usually formed to be shallower than the main body container (A), one end of which is rolled and processed, and the top plate (5) is inserted and locked. The inner surface of the cylindrical body of the lid member (B) and the inner surface of the top plate (5) are coated with a vaporizable anticorrosive resin film (3) as in the case of the main body container (A).

The size, shape, etc. of the main body container (A) and the lid member (B) are selected according to the size, shape, etc. of the metal product to be packaged. Each of these elongated shaft-shaped parts is handled individually, so it has an elongated shape, and, like small parts such as bolts and nuts, a specified number of units is stored as one unit in a single container. In the case of the parts to be stored, they are randomly stored in a container with a large inner diameter.
In order to prevent the collision and interference of individual parts, it is possible to deal with it by inserting and using a partition member. Further, for example, in the case of a circular part such as a bearing, it can be housed one by one or a plurality of containers.

The configuration of the present invention is as described above. Next, the packaging procedure and operation will be described.

In the packaging, the metal product is accommodated in the main body container (A) without applying rust preventive oil or the like, and the lid member (B) is fitted into the opening of the main body container (A). All you have to do is The inside of the main body container (A) is filled with the vaporized anticorrosive gas from the vaporizable anticorrosive resin film (3),
Since the atmosphere is such that corrosion and rusting of metal products are unlikely to occur, the metal products housed inside the space enclosed by the main body container and the lid member are stored during the effective period of the vaporizable rust preventive resin film (3). , Continuously protected by anticorrosion gas. This allows
From the production of metal products to shipping, storage, and unpacking by the user, the rust preventive action is reliably maintained, and the user does not need to wash the rust preventive oil after unpacking.
It can be used immediately for assembly and the like.

Although the above embodiment has been described as a cylindrical one, it is also possible to use a rectangular mandrel to form a rectangular cylindrical packaging container.

[0019]

According to the present invention, since the inner surface of the main body container and the lid member is the coating layer of the volatile anticorrosive resin film, the anticorrosive gas which is spontaneously vaporized from the coating layer is used as the main body container and the lid. It is possible to prevent the corrosion and rusting of the metal products housed in this space for a long period of time by filling the space hermetically sealed with a member to make an inert atmosphere. Therefore, it is not necessary to apply grease and rust preventive oil to metal products, which can shorten the packaging process, improve the efficiency of the packing work and improve the working environment, and also omit the cleaning work of the rust preventive oil on the user side. it can.

Further, since the vaporizable rust preventive resin film is coated only on the inner surface of the kraft paper which is the innermost layer of the main body container and the lid member, it can be used in the minimum necessary amount and the manufacturing cost of the packaging container can be reduced. Can be a cost. Moreover, since the main body container and the lid member are made of a laminated structure in which kraft paper is spirally wound into multiple layers, the seams are continuous in a spiral shape, have high rigidity, and also have a cushioning function It is suitable as a packaging container.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a packaging container of the present invention.

FIG. 2 is an explanatory view of a method for manufacturing a packaging container according to the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part of the packaging container of the present invention.

[Explanation of symbols]

 A main body container B lid member 1 kraft paper 2 bottom plate 3 vaporizable rust preventive resin film 5 top plate

Claims (1)

[Claims] 1. A main body container comprising a cylindrical body having a laminated structure in which a long strip of kraft paper is spirally wound into a plurality of layers, and a bottom plate is attached to one end of the main body container, and a long strip of kraft paper is spirally wound into a plurality of layers. Then composed of a cylindrical body laminated in a shape that can be fitted to the open end side of the main body container, and configured with a lid member that is sealed by attaching a top plate to one end, the innermost layer of the main body container and the lid member, A corrosion-resistant and rust-proof packaging container for metal products, characterized by being made of kraft paper with an inner surface coated with a vaporizable rust-proof resin film.