JP2003160104A - Packaging method for wire coil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging method for a wire coil by which the total surface including the inner peripheral surface of the wire coil can be covered with a packaging material without lifting the wire coil by a crane or the like, and handling scars or rust can be prevented from being generated when the wire coil is stored or transported for a long distance. <P>SOLUTION: The total surface including the inner periphery of the wire coil is covered into a bandage-form with a first packaging material which has a tensile strength of 300N or higher and a tear strength of 10N or higher. Alternatively, the total surface of the wire coil is wrapped and covered with the first packaging material having a wide width, and the total surface is covered into a bandage-form with a second packaging material having tract- stretchability for this packaging method for the wire coil. Also, a cushioning material for preventing scars can be provided on the inner peripheral surface of the wire coil as needed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packing a wire coil, and more particularly to a method for packing a wire coil for suppressing handling flaws and rust generation during storage or transportation.

[0002]

2. Description of the Related Art Conventionally, a wire wound in a coil is
After hot rolling, it is stored in the warehouse or stockroom as it is and then shipped from individual customers.However, wire rod coils that have been bundled, weighed, etc. have scratches due to contact between coils. Since it is in an easy state, wire flaws at loading and stacking of products at the time of stacking, when transporting and stacking in the factory, when shipping from the factory by sea, sea transportation, and land transportation by freight car or automobile Defects, scratches, etc. occur. In particular, as the quality of products becomes higher, surface flaws and the like during transportation have come to be considered to be a problem, and thus packaging is required.

Various methods for packing the wire coil have been proposed. For example, as disclosed in Japanese Patent Publication No. 62-18427, the outer circumference of the wire coil is made of a rectangular synthetic fiber cloth using a fastener and a string or rope. There is a method in which the outer peripheral surface and the end surface of the wire coil are covered by wrapping the wire around the wire and fastening both ends of the packing cloth with fasteners, and squeezing and binding a draw string or rope at both open end sides of the wire coil. .

However, since the inner peripheral surface of the wire rod coil cannot be wrapped by this method, rust is generated on the inner peripheral surface, or when the wire rod coil is lifted, a scratch is generated by contact with a hook such as a C hook. Further, there is a problem that it takes time to tighten the end face.

In Japanese Utility Model Laid-Open No. 61-161281, a flexible tubular packing material is inserted into a wire coil,
It is disclosed that both sides of the tubular packing material are folded back to cover the inner circumference and the outer circumference of the wire coil for packing. However, in this packing method, when the lower side of the wire coil is on the ground, the wire coil is folded back, so that it is necessary to lift the wire coil with a crane or the like, and there is a problem that a worker is required to fold it up.

[0006]

According to the present invention, the entire surface including the inner peripheral surface of the wire rod coil can be covered with the packaging material without lifting with a crane or the like, and the wire rod coil can be stored or transported over a long distance. It is an object of the present invention to provide a method for packing a wire rod coil that can prevent the occurrence of handling flaws and rust when doing so.

[0007]

DISCLOSURE OF THE INVENTION The inventors of the present invention have covered a wire coil with a first wrapping material having sufficient strength, and then pulled the entire surface of the coated wire coil to a second wrapping material having stretchability. It was found that the above-mentioned problems can be solved by covering with a bandage.

The present invention has been completed based on this finding, and the gist of the invention is as follows.

(1) The entire surface including the inner circumference of the wire rod coil is covered with a first wrapping material having sufficient strength in a band-like shape,
A method for packing a wire coil, wherein the entire surface of the packaging material is covered with a second packaging material having traction and stretchability in a band-like shape.

(2) The method for packing a wire coil according to the above (1), characterized in that the entire surface of the wire coil is wrapped and covered with a wide first wrapping material having sufficient strength.

(3) The method of packing a wire coil according to the above (1) or (2), characterized in that a flaw prevention cushioning material is provided on the inner peripheral surface of the wire coil.

(4) A buffer material for preventing flaws is provided on the inner peripheral surface of the wire coil, and the outer peripheral surface and both end surfaces of the wire coil are covered with a wide first packaging material having sufficient strength. A method for packing a wire coil, wherein the entire surface of the packaging material is covered with a second packaging material having traction and stretchability in a band-like shape.

(5) The method for packing a wire rod coil according to any one of (1) to (4) above, wherein the first packaging material has a tensile strength of 300 N or more and a tear strength of 100 N or more. .

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

According to the present invention, when a wire coil is transported and stacked in a factory, or when it is shipped from the factory by sea or by land, wire flaws during cargo handling, product flaws during stacking,
In order to prevent the occurrence of scratches or the like, the entire surface including the inner peripheral surface of the wire coil is covered with the first packaging material having sufficient strength.

As the first wrapping material, an olefin resin film, for example, a polyethylene cloth sheet, a polyethylene foam, a polypropylene cloth sheet, a hessian cloth (made of hemp), or the like can be used.

The strength of the first packaging material is 50 mm in width of the test piece and 180 mm in the gripping interval according to the Japanese Industrial Standard "Testing Method for Tensile Strength of Paper and Paperboard (JISP 8113)".
300N or more, preferably 4 in the tensile test at mm / min
It has a tensile strength of 00 N or more, and according to the Japanese Industrial Standard "General Textile Test Method (JIS L 1096)", the test piece width is 75 mm, the gripping interval is 150 mm, and the specified break is applied to the test at 200 mm / min. , 100N
It is preferable to have the above tear strength.

If the first wrapping material does not have sufficient strength, the covering of the wrapping material is damaged during the contact between the wire rod coils or during the loading and unloading, and the handling flaws such as scratches and scratches are effectively prevented. It will not be possible.

After coating with the first wrapping material, a second wrapping material having a pulling and stretching property is wound on the coating in a band-like shape to cover it. By winding the second wrapping material, the wrapping material is tightly fastened to the wire coil and packed. The second wrapping material having traction extension is a traction extension synthetic resin wrapping film (that is, a stretch wrapping film), which is stretched before or during winding on the wire coil. It is a material having a shape memory property that tries to return to the state before stretching. By tightening with the second packaging material, the first packaging material is protected by the second packaging material, and the effect of preventing the occurrence of handling flaws such as a wire wound coil flaw and a scratch is further improved. Further, since the wire coil is sealed by the first and second packaging materials, it does not come into contact with the outside air and water and moisture do not enter, so that rust can be prevented from occurring. Therefore, it is not necessary to put a desiccant or the like in the packaging material in order to prevent rust generation as in the conventional case.

The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a view showing an example of a 2-ton wire rod coil which can be packed in the present invention.

As shown in FIG. 1, in the case of a 2 ton wire rod coil, its dimensions are 1.4 to 1.6 m in height, 1.3 to 1.4 m in outer diameter, and 0.8 to 0 in inner diameter. The coil size is 1.9 m, which is longer in the height direction than the outer diameter.

The present invention can be advantageously applied to the packing of wire rod coils having a dimension in which the height direction is longer than the outer diameter as shown in FIG.

FIG. 2 is a diagram showing an outline of the first packing method of the present invention.

FIG. 3 is a sectional view showing an outline of equipment for winding a wrapping material around the wire coil in a band shape.

A 20 cm wide polyethylene cloth sheet, which is the first packaging material, is wound in the height direction of the wire coil through the central hollow portion of the 2 ton wire coil, and the entire surface including the inner peripheral surface of the wire coil is first Cover with a wrapping material.

As an apparatus for wrapping the packaging material in a bandage, as shown in FIG. 3, an elliptical orbit 6 passing through the central hollow portion of the wire coil 1 is provided, and a carriage 7 movable on the orbit.
The wrapping material coil 8 is installed in. When the tip of the packing material 8'is locked to the wire coil 1 by a chuck and the carriage 7 is moved along the elliptical orbit 6, the chuck quickly separates the tip of the packing material after one round, and the packing material has an inner surface. As shown by the arrow in Fig. 2, the wrapping material is the wire coil 1
Wrap along the height direction of. At the same time, the roller 10 of the coil holder 9 on which the wire rod coil is placed is gradually rotated.

The wire rod coil 1 rotates in response to the rotation of the roller 10, and the entire circumference of the wire coil 1 is covered with a wrapping material.

By controlling the moving speed of the carriage on the track and the rotating speed of the wire rod coil, it is possible to adjust the overlapping portion of the packaging material wrapped in a bandage.

After coating with the first wrapping material, the second wrapping is continued.
A synthetic resin wrapping film (stretch wrapping film) 5 having traction and stretchability is used as the wrapping material, and the wrapping material is wrapped and covered in the same manner as the wrapping method for the first wrapping material described above. The product shall be the wire rod coil packaging product shown in.

Since the first wrapping material uses a polyethylene cloth sheet or the like having a sufficient strength, it may come into contact with the wire coil when it is applied with tension to be cracked or torn. It does not get damaged and does not break even after packaging, and can fully fulfill the role of protecting the wire coil.

Since the first wrapping material is covered with the second wrapping material made of a synthetic resin wrapping film having traction and stretchability, it is necessary to tighten it with a string or a steel band as in the conventional case. Lost.

Further, according to the packing method of the present invention, it is not necessary to lift the wire rod coil with a crane or the like when the wire rod coil is covered with the packing material, so that the work can be performed safely and the packing with a small number of people is possible. It will be possible.

FIG. 4 is a diagram showing an outline of the second packing method of the present invention.

As shown in FIG. 4A, in this packing method, a wide polyethylene cloth sheet (wide cloth sheet) 11 is used as the first packaging material. First, the wire rod coil 1 is placed on the coil holder 9 to make the wire rod coil rotatable. Then, the wide cross sheet 11 is locked to the outer peripheral surface of the wire rod coil 1 to rotate the coil.

Wide cross sheet 1 according to the rotation of the coil
1 is wound around the coil 1 along the circumferential direction of the coil and covers the outer peripheral surface. At this time, both sides of the wide cross sheet 11 are bent to cover both end surfaces and the circumferential surface of the coil 1 so as to wrap it. With this, the entire surface including the inner peripheral surface of the wire rod coil can be covered with the wide cross sheet. The wide cross sheet needs to have a width dimension that can cover the outer peripheral surface, the inner peripheral surface and the end surface of the wire rod coil. For this purpose, it is preferable that the width dimension is 2.2 times or more the height of the wire rod coil.

After covering the wire coil with the first wrapping material of the wide cross sheet so as to wrap it, a wrapping film (stretch wrapping film) having traction and stretchability on the coating.
The second packaging material of No. 5 is covered in a bandage shape as shown in FIG. 3 to obtain a packaged product shown in FIG. 4 (b).

Further, a third packing method of the present invention is the same as the first and second packing methods, in which a flaw-preventing cushioning material is arranged on the inner peripheral surface of the wire coil and then covered with the first packing material. Is the way to do it.

As the shock absorbing cushioning material, cardboard paper,
Foam material, dongue loss, synthetic fiber cloth and the like can be used. By arranging the buffer material for preventing flaws, it is possible to effectively prevent the occurrence of flaws on the inner peripheral surface of the coil during handling of the wire rod coil.

FIG. 5 is a diagram showing an outline of the fourth packing method of the present invention.

As shown in FIG. 5A, the wire rod coil 1 is rotatably mounted on the coil holder 9 having the roller 10. Then, a flaw prevention cushioning material 12 such as cardboard is arranged on the inner peripheral surface of the wire rod coil, and then a wide polyethylene-based cross sheet (wide cross sheet) 11 is locked to the outer peripheral surface of the wire rod coil to rotate the coil. In response to the rotation of the coil, the wide cross sheet 11 winds around the coil along the circumferential direction of the coil and covers the outer peripheral surface of the coil. At this time, both sides of the wide cross sheet 11 are bent, and both end surfaces of the coil are covered so as to be wrapped. In this method, since the flaw prevention cushioning material 12 is arranged on the inner peripheral surface of the coil, the inner peripheral surface of the coil is not particularly positively covered with the wide cross sheet. This is because the flaws on the inner peripheral surface of the coil can be prevented by the flaw prevention cushioning material 12.

After being coated with the wide cloth sheet, it is subsequently covered with a wrapping stretchable stretchable wrapping film (stretch wrapping film) 5 in a bandage form to obtain a packaged product shown in FIG. 5 (b).

[0043]

EXAMPLES Examples of the present invention will be described.

The entire surface including the inner circumference of the 2 ton wire coil was covered with a 20 cm wide polyethylene sheet as a first wrapping material in a band-like shape, and then the entire surface of the first wrapping material was used as a second wrapping material. A stretch-wrapping film (polyethylene film) was used to cover the product into a bandage to form a packaged product.
The packaged items were transported by ship and tested for the packaged state and the rusting state.

Table 1 shows the specifications of the packaging material and the test results.

[0046]

[Table 1]

As is clear from Table 1, No. 1 which is a packaged product of the second packaging material without the first packaging material. No. 1, which is a packaged product using the first packaging material having a low strength and the first packaging material having a low strength. In No. 2, the packaging was torn and handling flaws and rust were observed.

On the other hand, a packaged product using the first packaging material having sufficient strength No. 3 and No. 4 is N
o. Although there was a slight breakage in the packaging material of No. 3, it was not a serious breakage, and neither flaw was observed nor rusting was observed.

As a comprehensive evaluation, No. which is an example of the present invention is used. 3 and No. 4 was a good evaluation as a packaged product, but No. 4 which is a comparative example. 1 and No. 2 was inferior as a packaged item.

That is, by packing with both the first packaging material having sufficient strength and the second packaging material having traction and stretchability as in the present invention, a packaged product of wire coil without handling flaws or rust. Can be

[0051]

According to the packing method of the present invention, the entire surface including the inner peripheral surface of the wire rod coil can be covered with the wrapping material without being lifted by a crane or the like, and the wire rod coil can be stored or long distance. It is possible to prevent the occurrence of handling defects and rust during transportation, easy tightening work, packing with a small number of people, and lifting work with a crane etc. Play.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a 2-ton wire rod coil that can be packed in the present invention.

FIG. 2 is a diagram showing an outline of a first packing method of the present invention.

FIG. 3 is a cross-sectional view showing an outline of equipment for winding a packing material around a wire coil in a band shape.

FIG. 4 is a diagram showing an outline of a second packing method of the present invention.

FIG. 5 is a diagram showing an outline of a fourth packing method of the present invention.

[Explanation of symbols]

1 wire rod coil 2 height 3 outer diameter 4 inner diameter 5 Stretch wrapping film 6 Elliptical trajectory 7 dolly 8 Packaging coil 8'packaging material 9 coil stand 10 rollers 11 wide cross sheet 12 Scratch prevention cushioning material

Continued front page    F-term (reference) 3E028 AB02 BB04 DA01 DA06 EA05                       HA02                 3E051 AA04 AB02 BA04 EA01 FA01                       FD10 HA02 HE10 JA02                 3E066 AA15 FA11 GA07 NA21                 3E068 AA24 AB09 AC02 CC26 CE02                       CE03                 4E026 DA01 DB08

Claims (5)

[Claims] 1. A first wrapping material having sufficient strength to cover the entire surface including the inner circumference of the wire coil in a band-like shape, and a second wrapping material having traction and extensibility over the entire surface of the first wrapping material. A method of packing a wire coil, which is characterized by covering in a bandage shape. 2. The method for packing a wire rod coil according to claim 1, wherein the entire surface of the wire rod coil is wrapped and covered with a wide first wrapping material having sufficient strength. 3. The packing method for a wire rod coil according to claim 1, wherein a shock-absorbing cushioning material is provided on the inner peripheral surface of the wire rod coil. 4. A buffer material for preventing flaws is provided on the inner peripheral surface of a wire coil, and the outer peripheral surface and both end surfaces of the wire coil are covered with a wide first packaging material having sufficient strength, and the first packaging is provided. A method for packing a wire coil, wherein the entire surface of the material is covered with a second wrapping material having traction and stretchability in a band shape. 5. The method of packing a wire rod coil according to claim 1, wherein the first packaging material has a tensile strength of 300 N or more and a tear strength of 100 N or more.