JPH0853110A - Cut-plate packaging method, and skid board therefor - Google Patents

Abstract

PURPOSE:To efficiently wrap a lot made up by piling up cut-plates like metal plates on a skid board with heat shrinkable film, and to preserve high air tightness while preventing rust from gathering because of humidity. CONSTITUTION:A surrounding groove 2 is provided to laterals of a skid board 1, and after cut-plates 3 are piled up on the skid board 1, the cut-plates 3 are wrapped with heat-shrinkable film 4 and heating is applied. Then, the ends of the heat shrinkable film 4 are inserted into the surrounding groove 2 on the laterals of the skid board 1 and stuck for fixation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packaging a cut plate such as a metal plate and a skid plate provided for the same, and more specifically, it can be packaged with good workability by using a heat-shrinkable film. The present invention relates to a packaging method in which airtightness is maintained and rust due to moisture does not occur, and a skid plate used for the packaging method.

[0002]

2. Description of the Related Art Among metal products, a lot of cut plates such as metal plates and steel plates is wrapped by rust-proof paper wrapped around the side of the lot and taped with the rust-proof paper and skid plate. It keeps the lot of the cutting board of the contents tight.

This packaging method can be roughly classified into the following two methods.

First, one of the methods is disclosed in JP-A-50-1.
The method described in JP-A-46478 and JP-A-50-146479. This method is a method of packaging by utilizing the fact that polyethylene or other heat-shrinkable film shrinks in a heated and high-temperature state. Therefore, cut plates such as metal plates are stacked on a skid plate, wrapped with a heat-shrinkable film, and heat-treated.

That is, FIG. 3 shows an example of a packaging method using a heat-shrinkable film. As shown in FIG. 3, cut plates 3 such as metal plates are stacked, and this lot is packaged with a heat-shrinkable film 4, and then heat-treated to shrink the film to be packaged.

[0006] This method is, compared with the following method described later,
Obviously, it takes almost no time for packaging and the workability is improved. However, from the viewpoint of airtightness, it is considerably inferior to the following method described later, and there is a problem in quality deterioration due to rust prevention and the like.

On the other hand, the next method is shown in FIGS.
It is the manual packaging method shown in.

In this method, as shown in FIGS. 4 and 5, the cut plates 3 such as metal plates are stacked on the skid plate 7, and the rust preventive paper 5 is wound on the side surface of the stacked lot. After that, in the rolled anticorrosive paper 5, the tapes 6a are provided between the anticorrosive papers 5 and the tape 6b is also provided between the antirust paper 5 and the skid plate 7. .

However, although the following method has the advantage of high airtightness, as is clear from comparison with the previous method,
Since everything is done manually, workability is inferior.
Workability, especially tape attachment during packaging, tape opening during unpacking
There is a problem with peeling, and this improvement is desired.

[0010]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned drawbacks, and more specifically, it is a packaging method capable of maintaining good airtightness even though it is packaged using a heat-shrinkable film. We also propose a skid board for it.

That is, as described above, rust-preventive paper was wound around the side of the lot where the cut plates were stacked, and tape was taped between the rust-preventive paper and the rust-preventive paper and the skid plate. At times, the airtightness of the contents can be maintained, but there is a problem in workability (for example, tape attachment or tape removal at the time of unpacking).

On the other hand, a packaging method in which a lot or the like is wrapped with a heat-shrinkable film and heat-treated can be easily packaged, but the airtightness is poor. In particular, when the film shrinks, the adhesion between the heat-shrinkable film and the lot is poor, and rust due to moisture occurs.

The present invention provides a package using a heat-shrinkable film, which solves the above problems.

[0014]

That is, according to the method of the present invention, an outer peripheral groove is formed on the side surface of a skid plate, the cut plates are stacked on the skid plate, and then the cut plates are covered with a heat-shrinkable film. The heat-shrinkable film is then heat-treated, and the end portion of the heat-shrinkable film is fitted into the outer peripheral groove of the side surface of the skid plate to be closely fixed.

Then, these means and their actions will be described more specifically with reference to the drawings.

First, FIG. 1 is an explanatory view of an example of a packaging method of a lot in which cut plates such as steel plates are stacked by the method of the present invention, and FIG. 2 is a sectional view of the packaging body shown in FIG.

In FIGS. 1 and 2, 3 is a cut plate such as a metal plate, 4 is a heat-shrinkable film, 1 is a skid plate, and the cut plates 3 are stacked on the skid plate 1. A lot consisting of the cut plate 3 is wrapped with a heat-shrinkable film 4 and then heated as in the conventional example. When heated in this way, the film 4 contracts and the film 4 adheres to the outer periphery of the lot.

In the case of packaging in this way, an outer peripheral groove 2 having a width of 5 mm and a depth of 5 mm, for example, is formed along the outer periphery of the skid plate 1 and heat-treated in this state to form the film 4 during packaging. The outer edge of the outer groove 2
It fits inside.

More specifically, the film 4 is packaged through the outer peripheral groove 2, and at that time, the film 4 is wrapped to some extent.
Even if the outer peripheral groove 2 is packaged with some allowance, the film 4 will be thermally shrunk during heating. Therefore, the edge of the film 4 enters the outer peripheral groove 2, and the film 4 is brought into close contact with the skid plate 1 and the airtightness can be sufficiently maintained.

[0020]

[Example] A width of 5 m along the outer peripheral surface of the skid plate 1 in advance
An outer peripheral groove 2 having m × 5 mm depth was formed. After the cut plates 3 were stacked on the skid plate 1 to form a lot, the outside of the lot and the outer circumference of the skid plate 1 were surrounded by a polyethylene film 4 as shown in FIG.

Even when the film 4 is simply wound around the outer surface of the lot of the cut plate 3 on the skid plate 1 as described above, when the film 4 is heat-treated, the upper edge of the film 4 is indicated by the arrow in FIG. While contracting in the direction and folding, the lower edge was fitted into the outer peripheral groove 2 and contracted and packaged as shown in FIG.

At this time, since the film 4 near the lower end of the lot contracts along the outer peripheral groove 2 of the skid plate 1, the airtightness against the contents is increased.

[0023]

As described above in detail, according to the present invention, the outer peripheral groove is formed on the side surface of the skid plate, the cut plates are stacked on the skid plate, and the cut plates are covered with the heat shrinkable film. Heat treatment from. This way,
The heat-shrinkable film shrinks by this heat treatment, and the end portion of the film is fitted and fixed in the outer peripheral groove of the side surface of the skid plate.

Therefore, according to the present invention, when a lot of cutting plates is wrapped with a heat-shrinkable film, the film shrinks along the outer peripheral groove of the skid plate, so that the airtightness can be sufficiently maintained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an example of a packaging mode according to the method of the present invention.

FIG. 2 is a cross-sectional view of a package after heat treatment by the method of the present invention.

FIG. 3 is an explanatory view showing a conventional packaging method using rustproof paper.

FIG. 4 is an explanatory view of the part shown in FIG. 3 seen from the upper side.

FIG. 5 is an explanatory diagram showing a packaging method using a heat-shrinkable film.

[Explanation of symbols]

 1 Skid board 2 Peripheral groove 3 Cutting board 4 Heat-shrinkable film 5 Rust-proof paper 6a tape 6b tape

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fumio Aoki 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Iron & Steel Manufacturing Co., Ltd. Chiba Steel Works

Claims (2)

[Claims] 1. An outer peripheral groove is formed on a side surface of a skid plate, cut plates are stacked on the skid plate, and then the cut plates are covered with a heat-shrinkable film, and then heat treated,
A method for packaging a cut plate, characterized in that an end portion of the heat-shrinkable film is fitted into an outer peripheral groove of a side surface of the skid plate and fixed in close contact therewith. 2. A skid plate in which cut plates such as metal plates are stacked, and the cut plate and an end of a heat-shrinkable film for packaging the skid plate are provided on a part or all of the side surface of the skid plate. A skid plate used for packaging a cutting plate, characterized in that an outer peripheral groove to be closely fixed is formed.