JPH0133496Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a buffer plate that is used for packaging electrical appliances, ceramics, etc., and for assembling food and drink products, and is provided with recesses in which these products fit together.

Conventionally, this type of buffer plate has been made of plastic such as styrofoam, which is easy to mold and has excellent cushioning properties, but due to the material properties, a mold that can withstand heat is required for molding. Since it is very expensive, the cost per piece is very high unless it is produced in large quantities, and it has the disadvantage that it is not suitable as a packaging material for products shipped in small quantities.It is also difficult to rot, and when incinerated, it turns black at high temperatures. There were many problems such as smoke.

This invention solves the above-mentioned drawbacks and aims to provide a buffer plate that can be molded even with an inexpensive wooden mold.

In other words, the packaging buffer plate according to this invention forms a highly plastic plate by combining the easily bendable material of the metal foil and the shape of the corrugated plate that is difficult to bend in the direction perpendicular to the direction of wave propagation. This product is characterized by having a concave portion in the plate body in which the product is placed.

The metal foil is preferably made of a material that is as easily plastically deformable as possible, such as aluminum, iron, or copper, and aluminum is particularly desirable because of its characteristics, such as its ability to stretch and be easily formed. Further, recently developed electrolytic iron foil is inexpensive and has the following characteristics, which is also advantageous. In other words, electrolytic iron foil is made by thinly bonding iron powder into one piece using electroforming, so it has almost no elasticity and is very plastic compared to rolled steel sheets, and its cut surfaces are not sharp, making it difficult to handle. Furthermore, since there is little impurity adhesion to the surface, the adhesive has good so-called "glue" even if the degreasing step is omitted, and exhibits a strong adhesive effect with other materials. In addition, conventional rolled steel foil has a minimum of 80μ
However, since electrolytic iron foil has a thickness limit of about 20μ, it is suitable for reducing the weight of buffer plates, and can also be used in combination with other materials. It allows you to obtain various characteristics of the body.

Next, some representative embodiments of this invention will be described based on the drawings.

First, FIGS. 1 to 3 show a first embodiment of this invention.

In this case, the buffer plate P has a recess 2 for the products to be packaged in the plate 1, with the sake bottle A and the cup B being packaged. A metal foil 3 made of electrolytic iron foil is used, and paper buffer cloths 4, 4 are adhered to both sides of the metal foil 3, which is hung on a corrugator to form a corrugated plate 5. Further, leg portions 6, 6 are provided at both front and rear ends of the plate body 1 by bending the end portions. It is desirable that the legs 6 be provided at both ends in a direction perpendicular to the direction of wave propagation so that the legs 6 can act strongly as described above.

The material of the buffer cloth 4 is not particularly limited as long as it has a hardness lower than that of the metal foil 3, and may include paper, woven fabric, non-woven fabric, knitted fabric, styrene paper,
Suitable examples include films.

Note that chloroprene-based or vinyl-based adhesives are suitable for adhering the metal foil 3 to paper, textiles, etc.

In the above configuration, when pressing the recess 2 in the plate body 1, a female die and a male die are used.
The metal foil 3 is easy to bend and has plasticity, and as a corrugated sheet 5, it is easy to bend in the direction of wave propagation, but it is difficult to bend in the direction perpendicular to it, and if it is forcibly bent in the direction perpendicular to the direction, It loses all restoring power and retains its bent form.
Therefore, there is no need to heat the female mold and the male mold, and if the plate body 1 is sandwiched between the two molds and press working is performed, the pitch L between the waves will expand (or sometimes contract) and a deep recess 2 will be formed. The shape of the concave portion 2 is maintained stably because a sharp bend occurs at its periphery, and extremely strong plasticity is exhibited particularly at the bend point 7 in the direction perpendicular to the wave traveling direction as described above. .

Further, since the corrugated shape of the corrugated plate 5 retains its shape in the recess 2 unless a particularly deep recess 2 is formed, the peripheral wall 8 of the recess 2 also has cushioning properties. Since the cushioning properties of the surrounding wall 8 of the recess 2 are very important for safe transportation of goods, when the recess 2 is formed particularly deep, the waves of the corrugated sheet 5 should be formed densely, that is, the pitch L between the waves should be small. , a margin is provided so that the corrugated shape is not lost in the circumferential wall 8 of the concave portion 2. Further, in order to facilitate the formation of the deep recess 2, it is preferable to use a metal foil 3 such as aluminum that is stretchable and easy to shape.

Next, FIG. 4 shows another embodiment, in which a single metal foil 3 is used for the corrugated plate 5, and a buffer cloth 4 is bonded to one side of the corrugated board at the top of the corrugated board to form a single-sided corrugated board 1. It's summery. The buffer cloth 4 is made by laminating a heat-welded film 4b on the back side of a paper 4a, and is bonded to a metal corrugated plate 5 by heat-welding. Even if a heat-welding film or a heat-welding adhesive is used to bond the members together in this manner, heating is not required when press-molding the recess 2, so there is no risk of peeling of the bonded area during molding.

In contrast, in FIG. 5, a corrugated sheet 5 is made by laminating a heat-sealed film to paper 5a, and a metal foil 3 is adhered to the corrugated sheet 5 at the top of the corrugated sheet.

Fig. 6 shows a corrugated sheet 5 made of a single metal foil 3 with cushioning cloths 4, 4 bonded to both sides to form a double-sided corrugated structure; in this case, a thermosetting adhesive is used. It's good.

In addition to the above-mentioned structure, the plate 1 may have a variety of other forms, such as a multi-sided or multi-sided corrugated structure, as long as it does not go against the spirit of this invention.

In addition, the board 1 of corrugated cardboard structure shown in each example below
In this case, starch glue, which is somewhat advantageous, can be used to bond the core and the liner, and the board 1 can be obtained using a corrugating machine, which is a conventional corrugated board manufacturing machine.

That is, first, FIG. 7 shows a case in which a liner in which papers 3a and 3b are laminated on both sides of a metal foil 3 is adhered to a paper corrugated plate 5 as a core.

Further, FIG. 8 shows that when paper 3a is laminated on the inner surface of metal foil 3 and is adhered to paper corrugated plate 5,
FIG. 9 shows a case where a paper 9 is adhered to a corrugated plate 5 in which papers 3a and 3b are laminated on both sides of a metal foil 3.

The buffer plate for product packaging invented by this invention is
As explained above, a plate with high plasticity is formed by combining the metal foil material and the shape of the corrugated sheet, and since the plate is provided with a recess into which the product is placed, the recess is pressed. There is no need to use an expensive heat-resistant mold for the molding, and an inexpensive wooden mold that is easier to manufacture than a metal mold can be used.
Therefore, it is possible to immediately respond to the demand for a small number of products of many types, and also to supply them at a very low cost. In addition, the corrugated shape provides cushioning properties and appropriate strength, making it suitable for safe packaging of products, as well as being lightweight and easy to stack, making it extremely convenient for handling. It has excellent effects.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of this invention, Figure 1 is a perspective view of the buffer plate shown in relation to the product to be packaged, and Figure 2 is an enlarged cross-sectional view taken in the direction of Figure 1 - line arrow. , FIG. 3 is a sectional view of a plate made of a buffer plate material, and FIGS. 4 to 9 are sectional views of plates showing other embodiments. P...Buffer plate, 1...Plate body, 2...Concave portion, 3...Metal foil, 5...Corrugated plate.

Claims (1)

[Scope of utility model registration request] A buffer plate for packaging products, characterized in that a plate with high plasticity is formed by combining the material of metal foil and the shape of a corrugated plate, and a recess into which the product is placed is provided in the plate by press working. .