JPH1159613A - Packing form for pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pack fiber rolls with requisite minimum of man-hours and materials and prevent collapse of load, by wrapping a pallet on which fiber rolls are placed with a shrink bag, and crosswise attaching fiber-reinforced adhesive tapes to each corner of it, thereby reinforcing the pack. SOLUTION: Fiber rolls 1 are integrated by means of PP bands 3 or the like at each level, therefore displacement as the same level does not occur easily. However, the relative positions between the levels are fixed by frictional force between the fiber rolls 1 and a shrink bag 4. Therefore, in order to prevent the displacement which occurs when a force stronger than the frictional force is applied, adhesive taps 5 are attached to corners from above the shrink bag 4. It is preferable that adhesive tape 5 is made of polyester threads whose fibers is reinforced and pulling strength is high, and an adhesive agent for it is a rubber adhesive. At least the two adhesive tapes 5 are crosswise attached to all the corners of the pallet-integrating pack.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for preventing the collapse of a load when transporting a roll of fiber.

[0002]

2. Description of the Related Art Spun fibers are wound around a bobbin or a core material to form a cylindrical fiber wound body. In addition, the wound body of the fiber is often transported in the state of the fiber alone without the bobbin or the core material in terms of transportation efficiency. Here, the fiber wound body is a fiber wound into a cylindrical shape, and includes both a bobbin and a core material provided or removed.

[0003] In order to transport a roll of these fibers, the following packing method is generally performed. On a flat pallet 2, a plurality of windings 1 of fibers are regularly arranged without gaps, and several layers are stacked. This state is shown in FIG. A semi-circular protector 10 made of plastic (FRP) or hardened paper is provided at the corner of the wound fiber stack.
Attach. Alternatively, a plastic or hardened paper pipe 11 is inserted between the stacked fiber windings. Then, the wound fiber body is bound by a band 3 made of polypropylene (hereinafter referred to as a PP band) or the like for each step, and fixed so as not to be shifted from each other. This state is shown in FIGS. A shrink bag 4 covering all of the fiber winding body 1, the protector 10 or the pipe 11 (hereinafter, these are referred to as protective materials) and the pallet 2 is covered, and heat is applied thereto to thermally shrink the shrink bag. FIG. 3 shows a state in which the shrink bag is thermally contracted using the protector 10. In this way, the stacked fiber wound body is integrated with the pallet, and the load is not collapsed by vibration or impact during transportation.

[0004]

However, the prior art has the following problems. A large number of man-hours are required to integrate the fiber winding body and the pallet, resulting in poor work efficiency. In some cases, the protective material is disposable, which requires a large amount of packaging materials or storage space. In the manufacturing industry, it is clear that the transport process does not add any added value to the product. Therefore, it is desired that the man-hours and materials for packaging the product be as simple as possible.

The present invention has been made by focusing on the problems existing in such prior art. An object of the present invention is to provide a packaging form of a pallet that does not collapse while using a minimum number of man-hours and materials when packing a wound fiber body.

[0006]

In order to achieve the above object, a pallet packing form according to the first aspect of the present invention comprises:
A pallet on which a roll of fibers is placed is covered with a shrink bag, and the corners are reinforced with adhesive tape.

A pallet packing form according to a second aspect of the present invention is the packaging form of the first aspect, wherein the adhesive tape is fiber-reinforced.

According to a third aspect of the present invention, there is provided the pallet packing method according to the first or second aspect.
At one corner of a pallet wrapped in a shrink bag, at least two adhesive tapes are crossed and attached.

According to a fourth aspect of the present invention, there is provided the pallet packing method according to any one of the first to third aspects, wherein the adhesive tape is adhered to the lower end of the pallet.

According to a fifth aspect of the present invention, there is provided a pallet packing form according to any one of the first to fourth aspects, wherein a stretch film is wound over a shrink bag whose corners are reinforced with an adhesive tape. Things.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. The configuration of the present invention is as follows. Wounds of a plurality of fibers are regularly arranged on a pallet without leaving an interval, and windings of these fibers are stacked in several stages. The wound body of these fibers is tightened at each stage with a high-strength band such as a PP band. Then, the wound fiber body and the pallet are covered with a shrink bag, and heat is applied thereto to shrink the shrink bag, and the wound fiber body and the pallet are integrated (hereinafter, this state is referred to as an integrated pallet).
Let it.

Here, the wound body of fiber refers to a fiber wound in a cylindrical shape as described above. In this cylindrical shape, the size of the inner diameter and the outer diameter may change in accordance with the axial direction of the fiber depending on how the fiber is wound. In other words, it is sufficient that the wound fiber body has a bottom surface that can be stabilized with the axis of the fiber being vertical on the pallet.

[0013] A shrink bag is a large bag made of a resin film, which is enclosed with a pallet and a wound body of fiber, shrunk by applying heat, and integrated with these inclusions. It is. The material of the shrink bag is not particularly limited, but is preferably polyethylene. Polyethylene is preferred because it has a high heat shrinkage and good adhesion to inclusions.

In this integrated pallet, the protective material between the windings of fibers and the corners is simply removed from the conventional packing form. When transported in the state of an integrated pallet, the roll of fibers easily collapses. Since the wound body of the fiber is integrated by a PP band or the like for each stage, the displacement inside the stage hardly occurs. However, the relative positions of the steps are fixed by the frictional force of the wound fiber body and the shrink bag. Therefore, when a force exceeding the frictional force is applied, the force is all supported by the shrink bag. Shrink bags are easily broken because they are not strong. With traditional packing methods,
The shift was countered using a protective material. That is, when the protective material is not used, the shrink bag alone cannot cope with this force, and the pallet-integrated object collapses. In this invention, an adhesive tape is attached to the corner from above the shrink bag instead of the protective material.

By sticking the adhesive tape to the corner of the integrated pallet, collapse of the load during transportation can be effectively prevented. Since the adhesive tape is adhered to the corner of the shrink bag, the tensile strength of the shrink bag is improved. This is because the adhesive tape distributes and supports the force applied to the shrink bag.

Further, since the work of attaching the adhesive tape to the shrink bag is very simple, the man-hour for the packing work is not required. In addition, the adhesive tape has advantages that it is inexpensive as compared with the conventional protective material and does not require a storage space. Therefore, the packing form of the pallet according to the present invention can prevent the collapse of the pallet-integrated article with minimum necessary man-hours and materials.

The pressure-sensitive adhesive tape is preferably fiber-reinforced. Here, the fiber-reinforced pressure-sensitive adhesive tape contains fibers therein, and has a high tensile strength. Therefore,
By using the fiber-reinforced adhesive tape, the strength of the shrink bag can be further increased. The fibers contained in the pressure-sensitive adhesive tape are not particularly limited, but polyester fibers are preferable. This is because polyester yarn is a synthetic fiber, so it has good familiarity with the adhesive material, and can be easily obtained because it is widely available on the market.

In the pressure-sensitive adhesive tape, the direction of the fiber is
Preferably, they are aligned in one direction. When the directions of the fibers are aligned in one direction, the tensile strength of the adhesive tape is extremely increased in one direction. Therefore, by aligning the direction of the fibers in the direction in which the pallet integrated body receives the tensile force, the collapse of the pallet integrated body load can be effectively prevented.

The material of the pressure-sensitive adhesive of the pressure-sensitive adhesive tape is not particularly limited, but a rubber-based adhesive is preferable. Specifically, a natural rubber-based adhesive is suitable. These rubber-based adhesives have good adhesiveness to polyester yarn and high elasticity. An adhesive tape using a rubber-based adhesive is attached to a shrink bag while being stretched due to its high elasticity. The stretched and adhered adhesive tape not only disperses and supports the force applied to the shrink bag, but also constantly tightens the shrink bag by its elastic force, thereby further preventing collapse of the load. The elongation percentage of the pressure-sensitive adhesive tape is preferably from 5 to 50% by length, and more preferably from 5 to 30%. This range is preferable because the worker can easily work while checking the elongation of the adhesive tape.

The kind of the wound fiber is not particularly limited. The present invention exerts a similar effect regardless of whether the fiber is a cylindrical fiber or an organic fiber or an inorganic fiber. INDUSTRIAL APPLICABILITY The present invention can also be used for conveying a roll of glass fiber having a relatively high specific gravity.

The glass fiber has a specific gravity of 2.54, and is 1.15 of nylon or 1.1 of acrylic fiber.
8 or more. Therefore, when the roll of glass fiber is transported in the packing form of the present invention, the adhesive strength of the adhesive tape to the shrink bag is preferably 0.5 to 3 kgf / 25 mm, and more preferably 1 to 1.2 kgf / 25 mm. Is preferred. When the shrink bag and the adhesive tape are used, these adhesive strengths can be obtained.

The adhesive tape is preferably attached to all corners of the pallet. By being attached to all corners, it is possible to prevent the fiber winding from shifting in all directions. Also, the number of adhesive tapes to be attached to each corner is not particularly limited,
Usually, two are sufficient. However, when a large force is applied to the corner portion, for example, when the number of steps of the wound body of the fiber increases or when a fiber having a high specific gravity is transported, it is necessary to increase the number thereof.

The method of applying the pressure-sensitive adhesive tape is not particularly limited, but it is preferable that at least two pressure-sensitive adhesive tapes intersect at the corner of the integrated pallet. Specifically, it is a method of sticking the adhesive tape shown in FIG. By sticking in this manner, it is possible to counteract forces from any direction in the same manner. That is, such an adhesive tape is preferable because there is no direction in which the strength is weak. During actual transport, the force applied to the wound fiber is from all directions. Therefore, the method of pasting the adhesive tape at the corners is an ideal way to carry the actual product.

The position where the adhesive tape is applied is not particularly limited as long as it is a corner portion of the pallet, but it is preferable to reach the lower end of the pallet.
Specifically, as shown in FIG. 1, it is preferable that the adhesive tape goes around the bottom surface of the pallet and is attached.
By sticking the adhesive tape in this way,
The unity of the pallet is further increased, and the collapse of the load is less likely to occur.

In the case where the number of stacks of the fiber windings is increased or when a fiber winding having a large mass is transported, the above-mentioned adhesive tape may be attached and a stretch film may be further wound. A specific example is shown in FIG. By winding the stretch film 6 around the integrated pallet, the integrated pallet is further tightened.

The method of winding the stretch film is not particularly limited, but it is preferable that the stretch film is wound around the pallet and the lower part of the fiber winding body. This is because the greatest force is applied to this portion during actual transportation.
Further, since the stretch film is wound around the bottom surface of the pallet, the integrity of the integrated pallet can be further enhanced.

The material of the stretch film is not particularly limited, but polyester film is preferred. This is because the polyester film has high extensibility and is hard to break. The thickness of the stretch film is preferably from 10 to 100 μm, and more preferably from 20 to 50 μm. This is because the stretch film in this range is easy to be stretched, so that the winding operation is easy and the stretch film is in close contact with the integrated pallet. The number of times the stretch film is wound is not particularly limited. It can be selected as needed.
Normally, the pallet is wound three or four times.

[0028]

The present invention will be specifically described below with reference to examples and comparative examples.

(Example 1) Wooden pallet 2 (1, 10
0 mm square, height 150 mm, weight 25 kg) and a glass fiber roll 1 (inner diameter 100 mm, outer diameter 275 mm, height 275)
mm, weight 18.5 kg) were regularly arranged as shown in FIG. At this time, the total weight of the pallet and the roll of glass fiber was 1,200 kg. The PP band 3 was wound around each stage of the glass fiber winding, and tightened so that the relative position of the glass fiber winding did not change. Furthermore, the pallet and the roll of glass fiber were covered with a shrink bag 4, and these were heated and integrated. This shrink bag was polyethylene having a thickness of 150 μm.

Thereafter, an adhesive tape 5 having a width of 12 mm and a length of 500 mm is wound around the bottom surface of the integrated pallet.
Was attached so as to intersect at the corner. In the attaching operation, the worker performed the operation while stretching the adhesive tape 5. This adhesive tape has a polyester fiber as a reinforcing material in the length direction, and uses natural rubber as the adhesive. The adhesive strength between the shrink bag and the adhesive tape was 1.2 kg / 25 mm. The vertical crossing angle between the two adhesive tapes was about 60 degrees. This packing form is shown in FIG.

An inclined impact test was performed on the pallet in this packing form. In the tilt impact test, an object is slid from the top of a tilt table, and the object collides against a wall provided thereunder, and a change of the object with respect to a constant impact is measured.

As a result of the tilt impact test, no breakage of the shrink bag was confirmed even when 35 G, which is the limit capability of the tilt table, was added. That is, no load collapse occurred.

It is generally said that most of the impact applied to an object being transported is 30 G or less.
Its incidence is over 98%. Furthermore, the impact rate of 30 to 40 G is 1%, and the impact rate of 40 G or more is about 0.3%. In other words, the fact that the packing form of this embodiment can withstand a shock of 35 G means that the packing form of the pallet of the present invention hardly collapses during normal transportation.

(Comparative Example 1) As shown in FIG.
A plastic protector 10 was applied to each corner of the same glass fiber wound body and tightened with a PP band.
Here, the protector 10 has a thickness of 5 mm, a width of 270 mm,
It has a length of 1,050 mm, the same inner diameter as the outer diameter of the glass fiber winding, and is in close contact with the glass fiber winding. Thereafter, as in Example 1, a shrink bag was put on and heat shrunk to obtain an integrated pallet. Fig. 3
Shown in

The integrated pallet was subjected to the above-described tilt impact test, and the impact strength was measured. As a result of the tilt impact test, a part of the shrink bag was damaged at an impact degree of 5G, and the pallet was collapsed.

Example 2 The pallet packing shown in FIG. 1 was carried out in the same manner as in Example 1, and a 25 μm-thick polyester stretch film 6 was further wound around the pallet packing form four times. Stretch film width is 500
mm and wound around the bottom of the pallet. Therefore, the lower half of the packaging form of the pallet is covered with the stretch film. FIG. 2 shows a packaging form of this pallet.

This pallet is loaded on a truck and 600 km
The actual running test was performed. As a result, no cargo collapse occurred.

(Comparative Example 2) In Example 2, a stretch film was wrapped four times without applying an adhesive tape on the shrink bag, and a 600 km actual running test was performed. As a result, the shrink bag and the stretch film were damaged, and collapsed.

By comparing Example 1 with Comparative Example 1, it can be seen that the strength is higher when the adhesive tape is used than when the protective material is used, and the collapse of the load hardly occurs.

By comparing Example 2 with Comparative Example 2, it can be seen that the stretch film improves the strength of the shrink bag, but cannot withstand actual transportation by itself. That is, it is understood that the adhesive tape is effective for improving the strength of the shrink bag.

The number of glass fiber rolls placed on the pallet is represented by 2 × 2 ×
2,3 × 3 × 2,3 × 3 × 3,3 × 3 × 4,4 × 4 ×
The actual running test was carried out under the same conditions as in Example 2 with 2, 4 × 4 × 3, 3 × 4 × 3, and 5 × 4 × 3. As a result, load collapse of the wound fiber body did not occur.

Further, in the pallet packing form of the present invention, it is possible to make cuts in the shrink bag and the stretch film at the pallet opening so that the claws of the forklift can enter. Since the reinforcement of the shrink bag with the adhesive tape is sufficiently high, the slight cut as described above does not pose a problem in actual use.

[0043]

The present invention is configured as described above, and has the following effects. According to the packing form of the pallet according to the first aspect of the present invention, since the pallet on which the wound body of the fiber is placed is covered with the shrink bag and the corner portion is reinforced with the adhesive tape, the force applied to the shrink bag by the adhesive tape. Can be dispersed and supported, and the collapse of the cargo can be effectively prevented with minimum materials and man-hours.

In the packing form of the pallet according to the second aspect of the present invention, since the adhesive tape is fiber-reinforced in the first aspect of the invention, the strength of the shrink bag can be further improved. Further, the collapse of the load can be effectively prevented.

According to a third aspect of the present invention, there is provided a pallet packing method according to the first or second aspect.
At least one piece of adhesive tape is crossed and attached at one corner of the pallet wrapped in the shrink bag, so that it is possible to effectively prevent the collapse of the load against the omnidirectional force applied to the shrink bag. it can.

According to a fourth aspect of the present invention, there is provided a pallet packing method according to any one of the first to third aspects, wherein the adhesive tape is adhered to the lower end of the pallet. Can be further improved.

According to a fifth aspect of the present invention, there is provided a pallet packing form according to any one of the first to fourth aspects, wherein a stretch film is wound over a shrink bag whose corners are reinforced with an adhesive tape. Therefore, it is possible to further improve the integrity of the integrated pallet, and to more effectively prevent collapse of the load.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging form of a pallet of the present invention.

FIG. 2 is a perspective view of a packaging form of a pallet using a stretch film.

FIG. 3 is a perspective view of a conventional packing form.

FIG. 4 is a perspective view of a pallet on which a wound body of fibers is placed.

FIG. 5 is a perspective view of a main part of a conventional packing form.

FIG. 6 is a perspective view of a main part of a conventional packing form.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wrap of fiber 2 Pallet 3 PP band 4 Shrink bag 5 Adhesive tape 6 Stretch film 10 Protective material for corner part (protector) 11 Protective material for pipe

Claims (5)

[Claims] 1. A packaging form of a pallet on which a pallet on which a wound body of fibers is placed is wrapped in a shrink bag, and corners thereof are reinforced with an adhesive tape. 2. The pallet packing form according to claim 1, wherein the adhesive tape is fiber-reinforced. 3. The pallet packing form according to claim 1, wherein at least two adhesive tapes are attached in a crossed manner at one corner of the pallet wrapped by the shrink bag. 4. The pallet packing form according to claim 1, wherein the adhesive tape is adhered to a lower end of the pallet. 5. The pallet packing form according to claim 1, wherein a stretch film is wound from above the shrink bag whose corners are reinforced with the adhesive tape.