JPH072271A - Packaging method for bale - Google Patents

Abstract

PURPOSE:To prevent a tape from being broken even when bales on the lower stage are depressed by the weight of the bales on the upper stage and expand to the left and right sides, by a method wherein the tape is discontinuously bonded on the upper surfaces of two or more bales on each stage when the bales are packaged. CONSTITUTION:Discontinuous bonding of a tape 1 on bales 2 means that the tape 1 bonded only on specified bond areas 1a of the bales 1, and excludes such a method that the tape 1 is bonded on the whole surfaces of the bales 2 in the case the bales 1 are fixed with an conventional adhesive tape. The tape 1 has at least a length required to fix adjacent bales 2 together, i.e., a length of d+2D or longer. One or more bond areas 1a can be provided on the bale 2. Thereby, even when ones on the lower stage among the bales 2 develop a cold flow and is deformed, non-bonded areas 1b stretch and the bonded areas 1a barely stretch. Therefore, the tape 1 stretching between the bales 2 is almost prevented from being partly, strongly stretched.

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 bale of an article such as rubber which is easily crushed by its own weight even at room temperature to cause cold flow.

[0002]

2. Description of the Related Art Rubber is shipped in bales of about 35 kg each, and the bales are piled on a pallet in about 5 steps in a so-called river shape and surrounded by a protective film or a removable wooden frame. It is often shipped in the empty state. Then, when unloading the rubber bale, the unloading is performed in order from the upper stage, so it takes about 40 minutes to 1 hour to finish the unloading. For this reason, the bale of the lower stage causes cold flow under the weight of the bale of the upper stage and is deformed so as to spread to the left and right, so that the interval between the bale of the upper stage also widens. For this reason, the upper bale may fall outside during unloading, causing a collapse of the load.

In order to prevent this, it has been attempted to attach an adhesive tape to the upper surface of each bale and fix it so that the outer bale does not fall.

[0004]

However, in the method as described above, when the lower bale is deformed so as to spread to the left and right due to the weight of the upper bale, the tape attached to the bale becomes It was often cut by the force of a strong stretch between the bales. Therefore, it was not useful for preventing the collapse of cargo.

An object of the present invention is to provide a packaging method in which the tape is not cut even when the lower bale is deformed so as to spread laterally under the weight of the upper bale.

[0006]

The packing method of the present invention is a method of stacking bales of articles, such as rubber, which are easily cold-flowed, in two or more layers, and packing at least two layers in each step. Is characterized by intermittently adhering a tape to the upper surface of the bale to connect these bale.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The packing method of the present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 and FIG. 2 show an example of the packing of a rubber veil packed according to the packing method of the present invention. FIG. 1 shows the package as seen from above, and FIG. 2 shows the package as seen from the side. 1 in the figure
Indicates a tape, 1a indicates a section where the tape 1 is adhered to the veil 2, and D indicates a length of this section. 1b shows the section which is not adhered to the veil 2, and d shows the length of this section. Two
Indicates a rubber veil, 3 indicates a pallet, and 4 indicates a protective film. Reference numeral 5 indicates an outer wooden frame.

In the packaging shown in FIGS. 1 and 2, the veils 2 are stacked on the pallet 3 in two rows in the longitudinal direction and three rows in the lateral direction in a river shape, and the veils are stacked in five steps. The arrangement of 2 is not limited to this, and any arrangement that is actually performed is included. Further, in the present embodiment, the veil 2 is covered with the protective sheet 4 and the outer side thereof is surrounded by the wooden frame 5, but the protective sheet 4 and the wooden frame 5 are not always necessary in the packing method of the present invention.

In the present invention, intermittently adhering the tape 1 to the veil 2 means that the tape 1 is intermittently adhered to the veil 2 only in a specific section 1a (hereinafter referred to as "adhesive surface 1a"). The method of adhering the entire surface of the tape 1 to the veil 2 as in the case of fixing with an ordinary adhesive tape is excluded.

The length of the tape 1 may be at least the length required to fix two adjacent veils together. Therefore, it is sufficient if the length is d + 2D or more. The adhesive surface 1a is
One bail may be provided at one place, or two or more places may be provided. Further, when the tape 1 having a length necessary for fixing two adjacent bale to each other is used, it may be provided at both ends of the tape 1. However, in order to achieve the effect of the present invention, it is necessary that the adhesive surface 1a does not overlap between the veil 2 and the veil 2. This is to prevent the tape 1 from being cut between the bail 2 when the bail 2 moves to the outside.

The tape 1 may be adhered to the outer cover of the veil 2 by applying a pressure sensitive adhesive, a hot melt adhesive, a solvent type adhesive or the like to the adhesive face 1a, or the outer face of the veil 2 may be adhered to the adhesive face 1a. May be heat-fused. Alternatively, it may be attached to the veil 2 via a double-sided adhesive tape.

The tape 1 and the veil 2 may be adhered in a planar shape or in a dot shape. 1 and 2 show an example in which they are adhered in a plane shape, and FIG. 3 shows an example in which they are adhered in a dot shape.

The length D of the adhesive surface 1a is preferably 3 cm or more. If the length D of the adhesive surface 1a is shorter than 3 cm, a sufficient fixing force cannot be obtained, and thus the tape 1 may peel off from the bale 2 due to the deformation of the lower bale when unloading. is there.

On the other hand, it is desirable that the length d of the non-adhesive surface 1b is 5 cm or more, preferably 10 cm or more, particularly preferably 15 cm or more. This is because if the length d of the non-adhesive surface 1b is smaller than 5 cm, it becomes difficult to attach the tape 1 so that the adhesive surface 1a does not cover the bale 2.

The width of the tape 1 is preferably 20 to 100 mm, and more preferably 35 to 70 mm.

The material of the tape 1 is not particularly limited, but when it is used for packing a rubber bale, it is preferable that the melting point is not so high. This is because in the case of rubber, the bales are unloaded and then applied to the Banbury mixer with the jacket and tape 1 still attached, so if the melting point of the tape is too high, the tape will not melt in the Banbury mixer and contaminants will be generated. Because it remains as. Therefore, low-density polyethylene, ethylene-vinyl acetate copolymer, polyvinyl acetate, ethylene
Vinyl alcohol copolymer, low crystalline syndiotactic-1,2-polybutadiene and the like are preferable.

To carry out the packing method of the present invention, for example, an apparatus as shown in FIG. 4 is used. In the figure, 6 is a conveyor for carrying the rubber bale 2, and 7 is a pallet 3.
Is a conveyor for moving the bale, 8 is a robot for loading the bale on the pallet 3, and 9 is a tape 1 on the upper surface of the bale 2.
Numeral 10 indicates a tape applying robot for applying the tape. The pallet 3 may be box-shaped with the periphery surrounded by a wooden frame 4.

The operation of this device will be described below. When the bale 2 is conveyed by the conveyor 6, the robot 8 stacks the bale 2 on the pallet 3 moving on the conveyor 7. After the robot 8 has accumulated the first stage veil, the tape applying robot 9 takes the tape 1 from the tape feeding device and the adhesive applying device 10 and applies it from the veil 2. The tape 1 is applied with an adhesive or the like in advance on a portion corresponding to the section 1a by the tape feeding and adhesive application device 10. If you stick tape 1 on the top of bale 2,
The robot 8 stacks the second stage bale 2. After the second-stage bale has been stacked, the tape application robot 9 applies the tape 1. This process is repeated.

[0020]

When the veil is packed by the packing method of the present invention, the tape in the lower and inner stages of the bale 2 deforms due to cold flow and the gap between the bale 2 is widened. The adhesive surface 1b extends, and the adhesive surface 1a portion hardly extends. This is shown in FIG. Therefore, the portion of the tape 1 that is hung between the bale 2 and the bale 2 is hardly stretched strongly, and the tape breakage resulting from this can be effectively prevented.

[0021]

According to the packing method of the present invention, even when a bale of an article such as a kind of synthetic rubber that is prone to cold flow is packed, a load collapse can occur at the time of unloading. Disappear. In addition to rubber, the packing method of the present invention is such that carbon black, calcium carbonate, a bag of fine powder such as cement, or a bag of granular material such as cereals, etc. It can also be preferably used for packaging articles.

The packing method of the present invention will be described more specifically below by comparing an example in which a synthetic rubber bale is actually packed by the packing method of the present invention with an example of a conventional packing method.

[Example 1] Synthetic rubber 335 mm x 670
The veil was a rectangular parallelepiped having a size of mm × 210 mm. The surface of the bale was covered with a polyethylene film to prevent the bale from sticking to each other during transportation. Weight per bale is 3
It was set to 5 kg. As shown in FIGS. 1 and 2, the pallet 3 was surrounded by a wooden frame 4, and a protective sheet 5 was placed inside the wooden frame 4.
In this, the above bales are arranged in 2 rows in the longitudinal direction and 3 rows in the lateral direction.
The rows were arranged in the shape of a river and were stacked in 5 layers. A low-density polyethylene tape 1 was attached to the upper surface of each bale in the manner shown in FIG. Adhesion to bale 2 is
A double-sided adhesive tape was attached to the section 1a of the tape 1 and this section was adhered. The width of the tape is 3
The length of the section 1a was 100 mm, and the length of the section 1b was 250 mm. At this time, the bale interval is 5 to 10
It was mm. 2 weeks after packing, open the packing and
It was left to stand for a while, and it was investigated whether the tape was cut. At the same time as opening the package, the bale of the second and lower steps from the top starts cold flow due to weight, and after 1 hour, the bale interval has expanded to 20-40 mm, and the length of the tape section 1b is 300. It stretched to ~ 450mm. However, there was almost no change in the length of the section 1a, and no tape breakage or load collapse was observed.

Comparative Example 1 A synthetic rubber veil was packaged in the same manner as in Example 1 except that polyethylene tape was used as the tape 1. After 2 weeks, when the package was opened and left for about 1 hour, the tape of the bale at the second stage and below from the top was cut. Cutting of the tape happened more often between the bales.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a packing method of the present invention.

FIG. 2 is a sectional view showing the same embodiment as FIG.

FIG. 3 is a plan view showing another embodiment of the packing method of the present invention.

FIG. 4 is a layout view of an apparatus used for implementing the present invention.

FIG. 5 is a sectional view showing the operation of the present invention.

[Explanation of symbols]

1 ... tape 1a ... section where tape 1 adheres to bale 2 ... veil 3 ... pallet 4 ... wooden frame 5 ... protective sheet 6 ... (with bale 2 Conveyor 7 (for moving) ... (Conveyor for moving pallet 3) 8 ... Robot (for loading bale 2 on pallet 3) 9 ... (For applying tape 1 to bale 2) ) Robot 10 ... Tape feeding and adhesive application device

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuya Yoshinami 8-1 Goi Minamikaigan, Ichihara-shi, Chiba Ube Industries Ltd. Chiba Petrochemical Factory (72) Inventor Yasushi Oda Goi Minami, Ichihara-shi, Chiba 8-1 Kaigan Ube Industries Ltd. Chiba Petrochemical Factory

Claims (1)

[Claims] 1. When packing a bale stacked in two or more stages, a tape is intermittently adhered to the upper surfaces of the two or more bale in each stage, and the bale is connected. How to pack the bale.