JPS5837184B2 - Unit packaging method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for converting a large number of various packages into one package.
The present invention relates to an improvement in the packaging method for an entire unit when a cubic package assembly (hereinafter referred to as a unit) is formed by stacking a plurality of packages in multiple tiers.

Conventionally, when a package assembly or unit is stacked with a large number of relatively small packages such as bags and boxes, it is necessary to stabilize the entire unit and prevent the load from collapsing while the unit is being moved, transported, and stored. Alternatively, it is known to package units in various ways in order to prevent damage to individual packages and prevent unit disassembly.

Examples of such unit packaging methods include (1) a shrink film heating method in which an outer shrink film is wrapped or covered on the side of the unit and then heated to bind the unit; 11) Stretching method of wrapping a stretchable film around the unit and bundling it (Unexamined Japanese Patent Publication No. 5
Unit packaging methods such as (see Japanese Patent No. 041688) were known.

However, units packaged in those ways
A pallet on which the unit package is placed is always required when moving, transporting, and storing the unit, and the pallet accompanies the above-mentioned distribution process of the unit, and the handling and treatment of this pallet has been a problem. .

Recently, a unit packaging method has been proposed in which multiple bands are wrapped around the unit as described above, and then a stretchable film is wrapped around the sides of the unit (Japanese Patent Laid-Open No. 51-78
(See Publication No. 492).

According to the unit packaging method, the unit can be transported and stored without using any pallets.
A unit package that can be distributed is obtained.

However, the unit package obtained by the above-mentioned method of using a band can be lifted by passing the fork part of a forklift through the band wrapped around the unit or hooking the hook of a crane. , the unit package is moved, transported, etc., but when it is lifted, the band gets stuck into the unit in places where the unit and band are in direct contact, especially at the bottom of the unit, causing the unit to become damaged. Disadvantages include deforming and damaging the individual packages wrapped around the unit; disadvantages in that the film wrapped around the unit loosens and the film rubs or falls off from the unit package;
Due to the above-mentioned deformation of the bottom of the unit, the flatness of the bottom surface of the unit packaging body deteriorates, resulting in a disadvantage that the unit packaging bodies may become unbalanced when stacked for storage.

Each of the above-mentioned drawbacks is particularly important when the weight of the unit package is about 10
This is a fatal flaw that causes the unit packages to collapse when they are loaded in trucks, freight cars, ship holds, or warehouses using forklifts or cranes for unit packages weighing 0 to 2000 kg. .

The present invention relates to a unit packaging method that does not require the use of pallets during the distribution process and can easily produce unit packages that do not have any of the above-mentioned drawbacks.

In packaging a cubic unit in which a large number of packages are stacked in multiple stages, (a) all sides of the unit are covered with a taut plastic film to bind the units; (e) covering the bottom surface of the unit with a plastic or wooden bottom plate of a size approximately corresponding to the bottom surface and to which at least two wrapping bands are fixedly attached; (e) furthermore, the unit; The above-mentioned at least two packaging bands are loosely wrapped around the plastic film on the side surface of the unit, the bottom plate on the bottom surface of the unit, and the top surface of the first hole and first part of the unit. The present invention relates to a unit packaging method.

The unit package obtained by the method of the present invention does not require the use of forklift pallets at all during its distribution process.

The unit package according to the method of the present invention allows the fork of a forklift or the hook of a crane to be easily inserted into the band loosely wrapped around the unit package, so that the unit package can be easily lifted by a forklift or crane. The bottom of the unit is protected by a plastic or wooden bottom plate that prevents the band from digging into the bottom of the unit packaging. Therefore, the individual packages are not damaged, and the shape of the unit package as a whole, especially the bottom surface of the unit package, is not significantly deformed.

Therefore, this unit packaging body can be easily moved without a pallet, and the package will not be damaged during the distribution process.

Further, in the unit package according to the present invention, all sides of the unit are covered with a taut plastic film to bind the unit, and at least two bands fixedly attached to the bottom plate are attached to the outermost circumference of the unit package. When the unit package is lifted up by the band as described above, even if the tensile plastic film covering the sides of the unit package loosens a little, it will be held down from the side by the band. Is it possible for the film to shift or fall off from the unit package? X.

Hereinafter, this invention will be explained in detail with reference to the drawings.

FIG. 1 shows an embodiment of a unit package packaged by the method of the present invention.

In the method of the present invention, the package 2 forming the unit 1 may be of any shape as long as it is relatively lightweight and small and can be stacked in a cubic shape. For example, a packing bag or a cubic container made of paper, plastic, or woven fabric may be filled with about 0.5 to 70 kg of granules, powder, liquid, or other shaped articles.

In particular, packages in which a packaging bag is filled with granules or powder have flexibility and the stacked units are relatively unstable, but if the unit packaging is carried out according to the method of this invention,
Since a stable unit package can be obtained, it is suitable as a package in the present invention.

In the method of the present invention, the cubic unit 1 is formed by arranging the above-mentioned plurality of packages 2 one by one within a substantially rectangular area, and stacking the packages 2 in multiple tiers to form the entire unit. It is an aggregate of packages 2 having a cubic shape.

It is preferable that the weight of this unit 1 is about 100 to 2000 kg so that the unit package can be easily placed on the distribution channel.

The length of each side of the unit varies depending on the shape and loading type of the package 2, but it can be of any length and ratio, preferably suitable for each transportation vehicle such as a truck, freight car, or ship, and for a warehouse. It is desirable that the length be suitable for stacking.

The packages 2 may be stacked by any known method.

In this invention, (a) the sword surface of the unit 1 is covered with a taut plastic film, and the unit 1 is bundled.

The method of covering the sides of the unit 1 with the tensile film 3 may be any conventionally known method. For example, (1) covering all sides of the unit with a heat-shrinkable plastic film and heating it; (11) Place a stretchable plastic film on all sides of the unit for 2 to 6 minutes in a stretched state.
Winding method, especially 2 to 4 times (Japanese Patent Application Laid-Open No. 50-4168
(see Publication No. 8).

The aforementioned plastic film 3 includes polyvinyl chloride, polyethylene, polypropylene, polyptadiene,
Examples include a heat-shrinkable film made of a nylon polymer (also referred to as a shrink film), a stretch film, and the like.

In the method of the present invention, the thickness of the shrink film is preferably 100 to 300 μm, particularly 120 to 250 μm, and the thickness of the stretch film is preferably 20 μm to 250 μm.
It is preferably about 200μ, particularly about 30 to 150μ.

In this invention, (b) the bottom surface of the above-mentioned unit 1 is
The unit 1 is covered with a bottom plate 4 made of plastic or wood having a size that approximately corresponds to the bottom surface of the unit 1 and has at least two packaging bands fixedly attached thereto, and the bottom plate 4 is placed on the bottom surface of the unit 1. state.

The bottom plate 4 has a thickness of 1 to 10 mm, particularly 2 to 10 mm.
61ILrIL, which is relatively lightweight and yet has sufficient strength so that the band does not get wedged in the unit package when the unit package is lifted by the band.

Examples of the bottom plate 4 include a low-foam plastic plate made of polystyrene, polyvinyl chloride, polyethylene, polypropylene, nylon polymer, etc., or a plastic cardboard plate in which a large number of columnar hollow parts are provided in parallel. Alternatively, mention may be made of wooden boards of single layer or laminated plywood.

In particular, as the bottom plate 4, a rectangular plastic cardboard board with a thickness of 1=10 mm, especially a thickness of 2 to 6 ynm, in which a large number of columnar hollow parts made of polyethylene or polypropylene are provided in parallel, is lightweight, and Moreover, it is suitable because it has high strength.

The columnar hollow portion may have any tubular shape, but is particularly preferably square columnar.

The size of the bottom plate 4 is approximately the same as the size of the bottom of the unit 1, but in order to prevent the bottom plate 4 from damaging packages of other unit packages, the size of the bottom plate 4 is approximately the same as that of the bottom of the unit 1. 4 preferably does not protrude, and the area of the bottom plate 4 is 0.6 to 0.6 to the bottom area of the unit 1.
It is preferably about 1 times, especially about 0.7 to 0.95 times.

It is also preferable that the shape of the bottom plate 4 is substantially similar to the shape of the bottom surface of the unit 1, and in particular, some of the corners are cut off so as not to have an angle of less than 90 degrees. Preferably.

The packaging band 5 attached to the bottom plate 4 may be a woven fabric made from natural fibers such as cotton, linen, or wool, or synthetic resin fibers such as polypropylene, polyethylene, POLJ vinyl chloride, or nylon polymer. Alternatively, it is a band manufactured from non-woven fabric, which has a strength capable of withstanding a load of 0, 1 to 50 when the unit package is lifted, and has a warpage width of 3 to 20 cwL, especially 5 to 15 cwL.
If the band is about cIrL, then L.

The band 5 is wrapped around the unit package,
It must be shaped like a ring.

The band 5 may be formed into a ring by suitably tying the ends of the band together, by sewing them together, or by using a suitable joint.

In addition, in the method of the present invention, when wrapping the band 5 around the outermost circumference of the unit 1, even if the band 5 formed in an annular shape by the method described above is wrapped around the unit 1, the unit 1
After winding the band around the ring, the band may be spliced together using the method described above to form a ring.

The bands 5 attached to the bottom plate 4 are preferably annular bands in which at least two bands are wrapped around the unit 1 and have approximately the same length.

The bars 5 are fixed to the bottom plate 4 and are arranged in parallel to each other, with intervals of 1iσ) ranging from 0.1 to 0.1 of the length of the bottom surface of the unit 1 in the longitudinal direction. It is preferable that the unit package is 6 times larger and further arranged so that when the unit package is lifted by the bands 5, an equal load is applied to each band 5.

In this invention, the number of 50 annular bands wrapped around the unit package is preferably 2 to 5, particularly 2 to 3.

The band 5 may be attached to the bottom plate 4 using screws, nails, adhesive, or the like.

As in this invention, when the bottom plate 4 and the band 5 are placed in a fixed state, the unit package is...
This is preferable because it prevents the band 5 from moving or coming off from the unit package when lifting or sliding.

d) In the method of the invention, the method of covering the bottom surface of the unit 1σ) with the bottom plate 4 is to place the bottom plate 4 at the place where the packages 2 are stacked and form the unit 1, and then cover the bottom plate 4 on top of the bottom plate 4. It is also possible to stack the packages 2, and there is a method in which the packages 2 are stacked to form a unit 1, and then the bottom plate 4 is placed on the top surface (tentatively the upper part) of the stacked unit 1. Alternatively, while maintaining the state of the unit 1 and the bottom plate 4, the unit 1 may be rotated upside down so that the bottom plate 4 is placed on the bottom surface of the unit 1.

Needless to say, when covering the bottom of the unit described above with a bottom plate, the surface of the bottom plate on the side where the pad is fixedly attached to the bottom plate should be on the outside (lower side).

In the method of the present invention, (a) the operation of binding the units with a film, and (b) the operation of covering the bottom of the unit with a bottom plate may be performed either first or almost simultaneously.

In the method of the present invention, after the operations (a) and mb) are completed, the above-mentioned at least one plastic film 3 on the side surface of the unit 1, the bottom plate 4 on the bottom surface of the unit, and the top surface of the unit are surrounded. Two wrapping bands 5 are loosely wrapped around each other in a ring shape.

The length of the ring part of the annular band 5 wrapped around the unit package may be long enough to loosely surround the outermost periphery of the unit package, and the length of the ring should be such that the band can wrap around the body of the unit package. If the band is tightly tightened, it will be difficult to insert the fork of a forklift or the hook of a crane into the annular band, so it is not suitable, and it is difficult to remove the band when unpacking the unit package. This is not appropriate as it would be difficult.

A specific example of a unit packaging method according to the method of the present invention will be described next.

Example 1 (1) First, about 25 kg of particles (particle diameter of about 2.3 m)
Packages (size: approx. 750 x 450 x 40 mm) filled in kraft paper bags are stacked in 8 tiers of 5 bags per tier to form a unit of approximately 1 ton (size: approx. 1 50 mm length).
0Xi & jl 2 00
A film with a thickness of 50 lt') was stretched and attached three times to the side of the unit, and at the same time as the film was cut, the ends of the film were fixed to the unit to bind the unit.

(11) Next, a 5,300 m long fabric made of 100 mm wide polypropylene fiber woven fabric that can withstand a load of approximately 2 to 3 tons.
Two annular bands of x have a thickness of 5 as shown in Figure 1.
mm polypropylene plastic cardboard board (
Place the bottom plate (approximately fal 2 5 0 x width 1100 mm) on top of the unit bound with the above-mentioned trench film, which is attached with screws, and rotate the unit and bottom plate upside down. The bottom plate was placed on the bottom of the unit.

(m) Finally, the two annular bands attached to the bottom plate were wrapped around the unit to form a unit packaging bag.

Even when the obtained unit package is moved and stacked by inserting the fork of a forklift into the band, there is almost no damage or deformation of the unit package or individual packages, and the unit package can be stacked easily. The attachment condition is stable, and even when the unit package and individual packages are lifted with the hook of a crane for loading, there is almost no damage or deformation, and they can be stacked in several stages in the hold of the ship. The condition of the attachment was also stable.

Example 2 (1) Place the bottom plate of the polypropylene plastic cardboard board to which the two polypropylene fiber colored bands used in Example 1 are attached, with the side to which the bands are attached facing down, in the storage area for packages. A unit was formed by stacking kraft paper bag packages on the bottom plate in the same manner as in Example 1.

(11) The unit was placed together with the bottom plate on a rotary plate and rotated, while a stretch film was wrapped in the same manner as in Example 1, and the film was cut and fixed to bind the unit.

(111) An annular band attached under the bottom plate was wrapped around the unit to form a unit package.

The unit package thus obtained also had the same effects as in Example 1.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a unit package obtained by the method of the present invention. 1 is a unit, 2 is a package, 3 is a plastic film, 4 is a bottom plate, and 5 is a band.

Claims (1)

[Scope of Claims] 1. A large number of packages stacked in multiple tiers (FA in the packaging of a cube-shaped package assembly cup (hereinafter referred to as Unit I. and L.5)) All sides of the unit (b) cover the unit with a taut plastic film and bind the unit; (c) In addition, the plastic film on the sides of the unit, the bottom plate on the bottom of the unit, and at least two of the above-mentioned plastic films surrounding the top of the unit; A unit packaging method characterized by loosely wrapping a wrapping band around the unit. 2. A stretched stretch film is wrapped 2 to 6 times around all sides of the unit to create a tensioned structure on all sides of the unit. A unit packaging method according to claim 1 in which the unit is covered with a plastic film. 3. A plastic bottom plate that covers the bottom of the unit,
It is a rectangular plastic cardboard board with a large number of column-shaped hollow parts arranged in parallel, and the total thickness of the board is 1 to 10 mm.
The unit packaging method according to claim 1, wherein the unit packaging method is mm.