JPS62220423A - How to pack unit load - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for packing containers for transporting cargo, and more particularly to a method for packing a large number of cargoes into a unit load.

[Conventional technology]

BACKGROUND ART Various cargo handling equipment and carriers have been used to streamline operations such as loading and unloading, transporting, and storing cargo. For example, palletization systems that use wooden or steel pallets and forklift trucks, or sheet pallets (also referred to as slipsheets) and push-pull forklift trucks are widely adopted.

In the pallet transportation mentioned above, in order to improve transportation efficiency,
The so-called unit load system, in which a large number of individual parcels are handled as one unit, is being promoted.

Methods for unit loading include wrapping binding tape made of stretch film or stretched tape to prevent the cargo from collapsing, or wrapping individual packages together in a bag using shrink film. A method of shrink packaging is commonly used.

In particular, stretch packaging is gaining popularity over shrink packaging because it allows continuous packaging without the need for shrink equipment.

However, in the conventional stretch packaging method, the sides of packages accumulated on a pallet placed on a turntable are entirely covered with a stretch film.

These conventional packaging methods are convenient for preventing cargo from collapsing, but on the other hand, it takes time to unpack, and it is not possible to attach or change labels to cargo after stretch wrapping. Another problem is that a large amount of stretch film is required.

[Problem that the invention seeks to solve]

The present invention was developed as a result of intensive studies in view of the above-mentioned problems, and its purpose is to save labor in stretch films while ensuring safety such as preventing cargo from collapsing.

Another object is to provide a unit load packaging method that streamlines unpacking efforts and allows for labeling and relabeling of packages.

[Failure to solve the problem]

The present invention is a unit load packaging method characterized in that at least the boundaries between each package accumulated on a pallet are wrapped in stripes with a (stretch) film or tape.

The present invention will be explained in more detail below based on the drawings.

FIG. 1 shows a perspective view of an example of an apparatus for implementing the present invention. In FIG. 1, a sheet pallet (2) is placed on a turntable (1), and a large number of packages (3) of approximately the same height are stacked on top of the sheet pallet (2) in brickwork to form an approximately rectangular parallelepiped as a whole. Stretch film 8H is pulled out from film roll 4 through rollers 5°5', and the starting end of the roll is inserted between the packages and fixed. When the turntable is rotated, the film is automatically stretched to a specified position. The height can be wrapped in a strip. film o-ru 4
1; It is attached to a film lifting plate 6 that can be raised and lowered up and down, and the lifting plate 6 can take any height by a controller (not shown) in correlation with the rotation time of the turntable. During packaging, the load is pressed vertically by a presser plate 7 operated by hydraulic pressure or a spring (not shown) to counteract the horizontal tension during packaging. By setting the rollers 5.5' at different circumferential speeds, it is possible to generate film T/C stretch and to save the film and to tighten the baggage.

Fig. 2 (Ma) is a side view showing an example of a packaging form in which stretch film is wrapped in a striped shape according to the present invention, and Fig. 2 (b) is a side view showing an example of a packaging form in which a conventional stretch film is entirely wrapped. FIG.

Moreover, FIG. 2(c) shows a side development view of the second solid air.

FIG. 3 is a side development view showing the winding order of an embodiment of the present invention.

In Fig. 3, the stretch film is wound in the following order: 1. Wrap the boundary between the pallet and the cargo; 2. Raise the film to the boundary between the first and second tier of cargo while the turntable rotates 90 degrees.

■ When you have finished winding the first and second layers of the package, raise the film roll so that it comes to the boundary between the second and third layers during the next 90° turn.

■～■ From then on, continue to roll up to the top of the 4th tier.

■ Once you have finished rolling the top, roll it down in the same way as above if necessary.

As described above, in the present invention, by controlling the rotational speed of the turntable and the height of the elevating plate, it is possible to wrap the boundaries of the accumulated baggage and the sides of the baggage in a striped shape.

At this time, the film may be wrapped only at the boundaries between the packages, but it is preferable to wrap the packages continuously until one unit load is completed.

This continuous packaging can omit operations such as cutting for independent packaging and holding the tape at the start of packaging, and also works to enhance the effect of preventing the load from collapsing.

Furthermore, although there is no baggage at the uppermost level of the stacked baggage, wrap the film in the same way as the other boundaries, and fold the part of the film that protrudes from the upper edge inward to cover the top surface of the baggage. It is preferable to do this to prevent cargo from collapsing.

Also, the spacing between the stripes depends on the type of luggage and its safety.

Although it varies depending on the label attachment position, etc., and is not limited to 1, normally the film is wrapped around 1/3 to 1/1 degree of the height of the baggage above and below the border between each baggage. It will be done.

The wrapping of the above film is 1/10 of the height of the luggage.
If it is less than that, there is a risk that the effect of preventing cargo collapse will be impaired, resulting in a safety problem. On the other hand, if the wrapping of the film exceeds 1/3 of the height of the package, excessive packaging will increase the cost of refilming, which will not only take time and effort when unpacking, but also require changes to new labels. This will interfere with the attachment of the repentance bell.

The stretch film or tape used in the present invention is not particularly limited, but is preferably a homopolymer such as polyethylene, polypropylene, polybutene-1, ethylene, propylene, butene-1,4-methyl-pentene-1, etc. Single film, laminated film, or processed film of olefin polymers such as interpolymers of α-olefins such as , hexene-1, copolymers such as ethylene-vinyl acetate copolymers, and mixtures thereof. (
(stretched film, crosslinked film, etc.).

Although the width of these films is not particularly limited, it is preferable to match the desired height to cover the boundaries between the respective packages, since this will reduce the number of times the film is wrapped and also from the viewpoint of safety.

〔Effect of the invention〕

According to the method of the present invention, it is possible to easily convert a large number of individual packages into unit loads with a minimum amount of packaging materials, and to attach labels directly to the unit loads, or to change the labels. etc. becomes possible. In addition, because it is a unit load with minimal packaging materials, costs can be reduced and the unpacking time can be significantly streamlined.

[Brief explanation of drawings]

FIG. 1 shows a perspective view of an example of an apparatus for implementing the present invention,
FIG. 2) is a side view showing an example of a packaging form in which stretch film is wrapped in stripes according to the present invention;
FIG. 2(b) is a side view showing a conventional packaging form completely wrapped with stretch film, and FIG. 2(c) is a side development view of FIG. 2(a) of the present invention. be. FIG. 3 is a side development view showing the order of winding according to an embodiment of the present invention. 1... Turntable, 2... Sheet pallet, 3
...Luggage, 4...Film roll, 5.5'...
Roller, 6... Lifting plate, 7... Pressing plate, 8...
Stretch film. 9...boundary

Claims (1)

[Claims] (1) A unit load packaging method characterized by wrapping at least the boundaries between each package stacked on a pallet in a striped pattern with a (stretch) film or tape.