JP2003026232A - Packing method and cushioning member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing method which makes it possible to safely transport objects to be transported by carrying out simple packing work, and further provide cushioning members which make it possible to safely transport the objects by carrying out simple packing work and whose manufacturing operation, disposal work and storage can easily be performed. SOLUTION: The packing method is such that objects to be transported are contained in inner containers 4 and that the inner containers are contained in an outer container 1. The inner containers are fitted into and held by cushioning members 2 disposed between each of the inner containers and the outer container, and the inner containers are supported by the outer container with the aid of angular cushioning protrusions 24 provided protrusively in a radial state toward the outer container from the cushioning members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material, and in particular, a cushioning material for safely transporting a thin plate-like product such as a semiconductor substrate or a glass substrate without damage by a simple operation. And a packing method using the cushioning material.

[0002]

2. Description of the Related Art When carrying information devices such as computers, displays, keyboards, etc., it is necessary to handle them carefully, avoiding the impact force during packing and carrying, so during the distribution process, store them in a foam material such as Styrofoam. Holding things,
The entire product is packaged in a corrugated container for transportation, but with semiconductor substrates, glass substrates, etc. that are parts of these devices, even small impacts can affect the quality of the product. Packaging that can ensure safety is desired. For this reason, a method has been adopted in which an object to be transferred such as a glass substrate is housed in an inner layer container, and the inner layer container is further housed in an outer layer container to protect the object to be transferred from an external force.

For example, as shown in FIG. 6, this method corresponds to the cushioning material 11 formed on the side surface portion of the cardboard box 1 which is an outer layer container, the bottom surface of the cardboard box 1 and the pair of side surface portions. After mounting the cushioning material 12 formed as described above and the cushioning material 13 formed corresponding to the bottom surface portion of the cardboard box 1 as shown by the thick arrows in FIG. 6, the two wafer boxes 20 that are inner layer containers are attached. A partition plate 15 is interposed between them, and the partition plate 15 is arranged on the cushioning material 13 as indicated by a thick arrow in FIG.
Furthermore, after covering the wafer box 20 with the cushioning material 14 formed corresponding to the upper surface of the cardboard box 1 as shown by the thick arrow in FIG. 6, the lid of the cardboard box 1 is closed and sealed to complete the packing. However, the impact force during transportation is buffered.

Here, each of the cushioning members 11 to 14 is formed by adhering a plurality of corrugated cushioning members 30 made of expanded polyethylene or the like on one surface of a cardboard in an array state. It is designed to buffer the impact on the contents.

[0005]

By the way, the cushioning materials 11 to 14 constructed in this manner are discarded when the cushioning effect is reduced to some extent by a plurality of uses. Since 14 is formed by adhering a cushioning member 30 made of foamed polyethylene to one surface of the cardboard, the cushioning member 30 is peeled from the cardboard in order to separate and collect the cardboard and the cushioning member 30.
It was necessary to separate and dispose of the product into pieces and to dispose of them, which was time-consuming. Further, also in the manufacturing process, there is a problem that the work of adhering a plurality of cushioning members 30 on one surface of the cardboard in a complicated state is complicated. further,
The packing work using the cushioning materials 11 to 14 is performed by the cushioning member 1
It is necessary to arrange 1 to 14 in the cardboard box 1 according to the predetermined procedure, and there is a problem that the work is complicated. Further, although such a complicated work is required, a sufficient cushioning effect cannot be obtained, and moreover,
These cushioning materials 11 to 14 require a considerable storage space.

Therefore, according to the present invention, a packaging method capable of safely transporting an object to be transported by a simple packaging operation, and a transportation method capable of safely transporting an object to be transported by a simple packaging operation, facilitating manufacturing / disposing work and storage. The purpose is to provide a cushioning material that can be used.

[0007]

In order to solve the above-mentioned problems, the present invention is a packaging method for accommodating an object to be conveyed in an inner layer container and accommodating the inner layer container in an outer layer container. The inner layer container is fitted and held by a cushioning member arranged between the outer layer container and the inner layer container, and the inner layer container is provided with angular cushioning projections radially protruding from the cushioning member toward the outer layer container. Provided is a packaging method characterized by being supported in an outer layer container.

In this packing method, a cushioning material is arranged in the outer layer container, the inner layer container is fitted and held by the cushioning material, and the inner layer container is elastically supported in the outer layer container. In this case, the inner layer container is fitted and held by the cushioning material, and is supported in the outer layer container by the cushioning projections radially protruding from the cushioning material toward the outer layer container. Since the cushioning material in which the inner layer container is fitted and held in this way is supported in the outer layer container by the cushioning projections radially protruding from the cushioning material, the external force applied to the outer layer container is Fully cushioned by elastic deformation. As described above, according to this packing method, unlike the conventional case, it is not necessary to perform a complicated work such as arranging and packing a plurality of cushioning materials having a complicated structure in the outer layer container according to the predetermined procedure, A large cushioning effect can be obtained by a simple operation, and the object to be transported in the inner layer container can be safely transported.

In order to solve the above-mentioned problems, the present invention is a cushioning material for elastically supporting an inner-layer container accommodating an object to be transported on an outer-layer container, the holding recess for fitting and holding the inner-layer container. And a cushioning projection configured to be radially projected toward the outer layer container in a state where the inner layer container is fitted and held in the holding recess and is disposed in the outer layer container. A cushioning material characterized by the above.

The cushioning material elastically supports the inner layer container in which the transported object is accommodated in the outer layer container. in this case,
This cushioning material fits and holds the inner layer container in a holding recess provided in the base body, and is supported in the outer layer container by the cushioning projections radially protruding from the base body toward the outer layer container. Thus, the cushioning material fits and holds the inner layer container in the holding recess of the base body, and is supported in the outer layer container by the buffering projections radially protruding from the base body toward the outer layer container. Therefore, even when an external force is applied to the outer layer container, the external force is buffered by the expansion and contraction of the buffer protrusions, and even if an impact that cannot be completely buffered by the buffer protrusions is applied to the inner layer container, the vibration generated due to the impact is buffered. The protrusion absorbs the damage to the transported object in the inner layer container.

Further, this cushioning material is one in which a cushioning material is arranged in the outer layer container, the inner layer container is fitted and held by the cushioning material, and the inner layer container is elastically supported in the outer layer container. , Does not require complicated work such as arranging and packing a plurality of cushioning materials having a complicated structure in the outer layer container according to the predetermined procedure, and a large cushioning effect can be obtained by simple work, The object to be transported can be safely transported. Further, unlike the conventional cushioning material formed by adhering a plurality of cushioning members to one surface of the cardboard, a complicated manufacturing process is not required, and the cushioning material is a single material even in the discarding work. These operations can be simplified because they can be discarded as they are without the trouble of peeling and separating.

It is desirable that the buffer protrusions are formed so as to project from the base member in a horn shape. By making the shock-absorbing protrusions into a square shape, the shock-absorbing protrusions that have received an external shock gradually deform from the tip and gradually absorb the external shock, so the shock applied to the contents in the container is sufficient. Can be buffered. Further, it is desirable to provide a total of 24 cushioning projections capable of obtaining projections in a checkerboard pattern in any of the front, rear, left, right, up, and down directions in the same combined state as when the packaging is completed. . The shock-absorbing protrusions can reduce the impact from any direction, and the transported object can be transported more safely.

Here, it is preferable that the cushioning material is formed of a resin foam material having a foaming ratio of 5 to 60 times. A resin foam material that is usually used as a cushioning material has a different cushioning effect of external force depending on the material and the foaming ratio. However, by using the resin foaming material having the above-mentioned foaming ratio as the material of the cushioning material, a high cushioning effect can be obtained. To be For this reason, even if a semiconductor substrate, a glass substrate, or the like is an object to be transported, which has a particularly high necessity of avoiding an impact applied during transportation, these objects can be safely transported. Also, by setting the expansion ratio within the above range, the efficiency of material removal can be improved.

In this case, as the resin foam material, one kind selected from expanded polystyrene (PS), expanded polyethylene (PE) and expanded polypropylene (PP) can be used to obtain a sufficient cushioning effect. From the viewpoint of enhancing the cushioning effect, expanded polyethylene (P
E) and expanded polypropylene (PP) are preferably used.

[0015]

DETAILED DESCRIPTION OF THE INVENTION A cushioning material according to an embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a cushioning material 2 according to an embodiment of the present invention. This cushioning material 2
As shown by a thick arrow in FIG. 1, the wafer box 4 is not shown in the state where one cushioning material 2 is arranged below and the other cushioning material 2 is arranged above the wafer box 4 which is an inner layer container. The wafer is held in the outer layer container and shocks applied to the wafer box 4 are buffered to prevent damage to the wafer, which is an object to be transported, in the wafer box 4.

Here, although not shown, the wafer box 4 is provided with a plurality of vertical holding plates for holding the peripheral edge of the wafer, which is an object to be transferred, on the inner surfaces facing each other, and the holding plates are held in their grooves. It is configured to store as many wafers as possible.

The cushioning material 2 is formed of a foamed resin material, and as shown in FIG. 2, a housing concave portion in which the upper end portion of the wafer box 4 is fitted and housed in the inner surface of a substantially square block-shaped substrate 21. 22 is formed, and further, a square hole 23 penetrating the central portion of the accommodation recess 22 and the outer surface of the base 21 is formed. In addition, the outer peripheral surface of the pair of bases 21 which are vertically divided into a pair with the upper side in FIG. 2A and the lower side in FIG.
Are integrally formed with the base 21 so as to project therefrom. When viewed from above or below, these 24 angular buffer projections 24 project from the base 21 at eight locations as shown in FIG. 2A, and as viewed from the side, as shown in FIG. , Base 2
Eight projections are provided from 1 toward the outside, and are arranged radially as a whole. That is, when the wafer box 4 is viewed from any of the front, rear, left, right, upper, and lower directions, the buffer projections 24 having eight corners in a double cross shape are projected substantially evenly. It is designed to support vibration absorption.

These cushioning projections 24 contact the inner wall of the outer layer container in a state where the cushioning material 2 is arranged in the outer layer container and support the cushioning material 2 in the outer layer container, and are the inner layer container. The wafer box 4 is elastically supported to absorb an external force. With this, when an impact force is applied to the outer layer container from the outside during transportation, the impact force and the vibration caused thereby are buffered by the elastic contraction of the pair of cushioning materials 2 inside the outer layer container, Wafer box 4
The wafer, which is the object to be transferred, is protected without damage. The size, the number, and the shape of the buffer protrusions 24 are the maximum impact force from the outside and the inner layer container accommodated therein so that the impact force on the wafer, which is the object to be transferred, in the wafer box 4 can be sufficiently buffered. It is designed to correspond to the maximum weight of a certain wafer box 4.

Here, foamed polystyrene (PS), foamed polyethylene (PE) and foamed polypropylene (PP) can be used as the foamed resin material forming the cushioning material 2, but from the viewpoint of enhancing the cushioning effect. It is preferable to use expanded polyethylene (PE) or expanded polypropylene (PP). The foaming rate of these foamed resin materials is preferably set to 5 times to 60 times in order to obtain a high cushioning effect. By setting such a foaming ratio, it is possible to improve the cushioning action by the energy consumption associated with the compression of the air contained in the large number of holes of the foaming resin, and it is possible to favorably absorb the vibration and impact force on the contained object.
Further, in the cushioning material 2, since the base 21 and the cushioning protrusions 24 are integrally formed from the foamed resin material, the cushioning member 30 is attached to the cardboard like the conventional cushioning materials 11 to 14 shown in FIG. No need for complicated work such as gluing,
Manufacturing work can be simplified. Furthermore, by forming the base 21 into a square block shape and providing the base 21 with the square holes 23, the efficiency of material removal can be increased, and the weight and cost can be reduced.

Next, the operation of packing the wafer box 4 in the cardboard box 1 which is an outer layer container using the cushioning material 2 will be described with reference to FIG.

When packing the wafer box 4 in the cardboard box 1, first, as shown by the thick arrow in FIG. 3, the lower cushioning material 2 is inserted into the cardboard box 1 from the upper end opening of the cardboard box 1. , Placed on the bottom of the cardboard box 1. Then, insert the wafer box 4 into the cardboard box 1,
The lower end of the wafer box 4 is fitted into the accommodating recess 22 of the cushioning material 2 and the wafer box 4 is placed on the cushioning material 2. In this case, the cushioning projections 24 of the cushioning material 2 attached to the lower end of the wafer box 4 contact the inner wall of the cardboard box 1 and elastically support the wafer box 4 in the cardboard box 1.

Next, as shown by the thick arrow in FIG. 3, the cushioning material 2 is inserted into the cardboard box 1 through the upper end opening of the cardboard box 1, and the upper end part of the wafer box 4 housed in the cardboard box 1 is inserted. The accommodating recessed portion 22 of the cushioning material 2 is fitted to and the upper end of the wafer box 4 is attached so as to cover the cushioning material 2. Also in this case, the cushioning projections 24 of the cushioning material 2 contact the inner wall of the cardboard box 1 to elastically support the wafer box 4 in the cardboard box 1. In this way, the wafer box 4 is mounted so as to be sandwiched between the upper end portion and the lower end portion by the pair of cushioning materials 2, and then the lid of the upper end opening portion of the cardboard box 1 is closed and sealed to complete the packing operation. As described above, according to the cushioning material 2, the wafer box 4 can be housed and packed in the cardboard box 1 by a simple operation, so that special attention, physical strength and a large number of manpower are not required for packing. Complete.

The wafer box 4 is replaced by the cardboard box 1
The procedure for packing the wafer box 4 in the wafer box 4 is such that the cushioning material 2 is attached to the upper end portion and the lower end portion of the wafer box 4.
Is stored in the cardboard box 1, the procedure is not limited to the above-described procedure. For example, the cushioning material 2 may be attached to the upper and lower ends of the wafer box 4 and then stored in the cardboard box 1. .

By packing with the cushioning material 2 in this way, when an impact force is applied to the cardboard box 1 from the outside during transportation, the pair of cushioning materials 2 inside the cardboard box 1 Due to the elastic contraction, the impact force and the resulting vibration are buffered, and the wafer box 4 is shaken inside the cardboard box 1 while being held in the accommodation recesses 22 of the pair of buffer members 2. Vibration and impact force on the wafer box 4 are buffered by energy consumption due to shaking and energy consumption due to compression of air contained in a large number of holes of the foamed resin. Therefore, the wafer, which is the object to be transferred, in the wafer box 4 is protected without damage. Further, since it has a two-layer safety packing structure that is generally used for overseas, it is not necessary to distinguish the packing form between domestic and overseas, and the management cost can be reduced.

Although the case where the two wafer boxes 4 are packed has been described here, according to the cushioning material 2,
Since the cushioning projections 24 of the cushioning materials 2 adjacent to each other are accommodated in the cardboard box 1 in a state of being in contact with each other, the cushioning material 2 supporting each wafer box 4 is less likely to be displaced in the cardboard box 1 and has a high cushioning property. The effect can be obtained. The number of wafer boxes 4 accommodated in the cardboard box 1 is not limited to two. For example, when packing one wafer box 4 or when packing three or more wafer boxes 4, The cushioning material 2 can be preferably used.

This cushioning material 2 is repeatedly used for such packing work, but since it is constructed by forming a cushioning projection 24 integrally with the base body 21 on the outer surface of the base body 21, Has high durability and can be used for a long time. Further, since the cushioning material 2 used a plurality of times in the packing work has a low cushioning effect, it needs to be disposed of. However, this cushioning material 2 is a cardboard like the conventional cushioning materials 11 to 14 shown in FIG. Since the cushioning member 30 made of a foamed resin material is not adhered to the base body, and the base 21 and the cushioning projections 24 are integrally formed of the foamed resin material, they can be recycled as they are and the disposal work can be facilitated and resources can be saved. It can be used effectively.

[0027]

EXAMPLES Next, examples according to the present invention will be described in comparison with comparative examples. [Embodiment] FIG. 4 shows a state in which the upper and lower ends of a wafer box 4 as an inner layer container are held by the cushioning material 2 of the present invention shown in FIG. 1 and housed in a cardboard box as an outer layer container.
(A), it was packed as shown in FIG. 5 (a), and a vibration test and an impact test were conducted under the following test conditions. The result is shown in Figure 4.
(B) and FIG.5 (b) are shown. [Measurement conditions] Evaluation target Packing target 8 inch wafer 25-box 2
Wafer packed with individual items Box wafer 8 inches (thickness of 300 μm) Buffer material Polyethylene L block (foaming ratio 38
Double) Outer box Cardboard External dimensions 39 × 70 × 36H
(cm) Volume 98.3 liters Vibration test <Test conditions> Vibration frequency 5HZ to 55HZ Vibration value 5HZ to 20HZ (vibration control) 2.5
mmP-P 21HZ to 55HZ (acceleration control) 19.6m / S ² sweep method Logarithmic sweep method (Log SWEEP) Sweep time 15 minutes reciprocating Vibration direction X, Y, Z direction (see Fig. 4) Vibration time X, Y direction: 30 minutes each, Z direction: 6
0-minute impact test <Test conditions> Falling posture 10 postures (1 corner 3 ridges 6 surfaces: Fig. 5)
Medium (1)-(10)) Drop height 100 cm Falling floor Concrete Number of drops (each posture x 1 time, total 10 times) x 2 times

Comparative Example Conventional cushioning materials 11 to 11 shown in FIG.
14 was packed as shown in FIG. 4 (a) and FIG. 5 (a), and a vibration test and an impact test were conducted under substantially the same conditions as in the above-mentioned embodiment. The results are shown in FIGS. 4 (b) and 5 (b). [Measurement conditions] Evaluation target Package target Same as the example except that the following outer box is used Outer box External dimensions 37 × 72 × 38.5H (cm)
Volume 10 2.5 liters Vibration test <Test condition> Impact test similar to the example <Test condition> Same as the example except that the drop height is the first time: 80 cm, the second time: 90 cm

In the vibration test, as shown in FIG. 4B, no cracks, chips, or cracks were found in the wafers contained in the wafer box in both the example and the comparative example, and good results were obtained. .

In the drop test, as shown in FIG. 5 (b), in the first and second tests, no cracks, cracks, or breaks were observed on the wafer, and good results were obtained. . On the other hand, in the comparative example, even though the drop height was 80 cm, two of the 500 wafers were cracked, and in the test with a drop height of 90 cm, 12 of the 500 wafers were cracked. Occurred. In addition, there were some wafers that were not cracked but had a shift in the arrangement position in the wafer box. As described above, a large difference was found in the cushioning property between the packaging method of the example and the packaging method of the comparative example, and it was confirmed that the cushioning material of the present invention has an excellent cushioning effect.

In the present invention, the cushioning material 2 in the above embodiment is used.
The present invention is not limited to this, and may be appropriately changed without departing from the gist of the present invention. For example, in the above-described embodiment, the case where the wafer box 4 is packed as an inner layer container has been described, but the size, shape, and type thereof are arbitrary and may be appropriately changed as long as it is necessary to avoid impact from the outside. It doesn't matter. However, in this case, in order to be able to hold a part of the inner layer container, it is necessary to form the accommodating recess 22 in a size and shape according to the outer shape of the inner layer container. Also,
The size and shape of the buffer protrusions 24 and the position of the buffer protrusions 24 provided on the base body 21 may be appropriately changed according to the shape of the inner wall of the outer layer container to be packed so that the transported object in the inner layer container can be sufficiently protected from an external impact. Absent.

Although the cushioning material 2 of the above-described embodiment has a single accommodating recessed portion 22, a plurality of cushioning materials 2 are connected side by side in accordance with the number of contained items to be packed, and the number of connected portions is increased or decreased. A plurality of housing recesses 22 may be provided accordingly. Further, in the above embodiment, the inner layer container is supported and packed in the outer layer container by sandwiching the inner layer container with the pair of cushioning materials 2.
The buffer material 2 to be used is not limited to two, and three buffer materials 2 may be used to support the inner layer container in the outer layer container, or four or more buffer materials 2 may be used.

Although the cushioning material 2 of the above-mentioned embodiment has a structure in which the square hole 23 is provided in the base body 21, if the desired cushioning effect can be maintained and the amount of the foamed resin material used in the cushioning material 2 can be reduced. The shape of the hole is not limited to a quadrangle, and a hole having another shape such as a round shape may be provided, and the square hole 23 may not be provided. The size of the cushioning material 2 itself can be arbitrarily set according to the size of the inner layer container, the size of the outer layer container that accommodates the inner layer container, and the like, and when the size of the inner layer container is too small with respect to the outer layer container, If the size of the cushioning material is set to a large value, while the size of the inner layer container is larger than that of the outer layer container, the size of the cushioning material is set to a small value so that the inner layer container of various sizes can be set to various sizes. Can be stored in the outer layer container. In the above-mentioned embodiment, the pair of cushioning materials 2 are attached to the upper end portion and the lower end portion of the inner layer container, but the holding recesses 22 of both cushioning materials 2 are configured to cover most of the outer peripheral surface of the inner layer container. The container may be protected.

The positional relationship in the vertical direction in the above embodiment does not necessarily mean the vertical direction in actual use, but the side portion of the wafer box 4 is accommodated in the recess 22.
In the case of holding by, it can be used with the inner surface facing sideways. Furthermore, in the above embodiment, polystyrene (P
S), polyethylene (PE), polypropylene (PP)
Although a bead foam such as the above was used, a foam such as urethane can also be used.

[0035]

As described above, according to the packing method of the present invention, the inner layer container accommodating the object to be conveyed is provided with the angular buffer protrusions radially protruding toward the outer layer container. Since the cushioning material is provided in the outer layer container, the transported object in the inner layer container can be safely packed by a simple operation of attaching the inner layer container to the cushioning material placed in the outer layer container.

Further, according to the cushioning material of the present invention, the inner layer container is supported in the outer layer container by the buffer protrusions radially protruding toward the inner surface of the outer layer container in a state of being arranged in the outer layer container. Therefore, shocks from various directions can be sufficiently buffered. Further, since the cushioning protrusions constituting the cushioning material are formed integrally with the base body, the manufacturing / disposal process can be simplified and the efficiency of material removal can be improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating how to attach a cushioning material to an inner layer container according to an embodiment of the present invention.

2A and 2B show the same cushioning material, in which FIG. 2A is a perspective view from the outside, and FIG. 2B is a perspective view from the inside.

FIG. 3 is a diagram illustrating a packing method using the same cushioning material.

FIG. 4 is a diagram illustrating a vibration test method and a result of the packing method using the same cushioning material.

FIG. 5 is a diagram illustrating a drop test method and a result of the packing method using the same cushioning material.

FIG. 6 is a diagram illustrating a conventional packing method using a cushioning material.

[Explanation of symbols]

1 cardboard box 2 cushioning material 21 Base 22 Holding recess 23 opening 24 Buffer protrusion

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Claims (6)

[Claims] 1. A packing method for accommodating an object to be conveyed in an inner layer container and accommodating the inner layer container in an outer layer container, the method comprising: a cushioning material disposed between the inner layer container and the outer layer container. A packing method, characterized in that the inner layer container is fitted and held, and the inner layer container is supported in the outer layer container by angular buffer protrusions that are radially projected from the cushioning material toward the outer layer container. . 2. A cushioning material for elastically supporting an inner-layer container accommodating an object to be transferred to an outer-layer container, the base having a holding recess for fitting and holding the inner-layer container, and the inner-layer container for holding the inner-layer container. A cushioning protrusion configured to project toward the outer layer container in a state of being fitted and held in the recess and arranged in the outer layer container. 3. The buffer protrusions are formed so as to project from the base member in a horn shape.
The cushioning material described in. 4. The shock-absorbing projections having a total of 24 projections in a grid pattern can be obtained in any of front, rear, left, right, up, and down directions in the same combined state as when the packaging is completed. The cushioning material according to claim 2 or 3, characterized in that. 5. A resin foam material having a foaming ratio of 5 to 60 times, wherein the foaming ratio is 5 to 60 times.
The cushioning material according to claim 4. 6. The resin foam material is one selected from expanded polystyrene (PS), expanded polyethylene (PE), and expanded polypropylene (PP), according to any one of claims 2 to 5. The cushioning material according to the item.