JP4715013B2 - Buffer pad - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a buffer pad for supporting an object to be packaged in a packaging container and absorbing an impact.
[0002]
[Prior art]
For example, when packaging and transporting home appliances and various industrial parts in a cardboard box, the cushioning material placed in the box in order to protect the object to be packaged from impact is still often a foamed polystyrene product. With regard to the treatment after the use, for example, a technique such as dissolving in a solvent to reduce the volume has been developed and has been practically used to some extent, but it requires special equipment and chemicals and cannot be carried out anywhere. Some plastic blow moldings have closed mouths, but they have the disadvantage of being bulky during storage.
[0003]
For the problem that the cushioning material is bulky and troublesome in advance, there is a countermeasure to make a bag with plastic film and inject air at the packaging site to prepare the cushioning material. It is not implemented very much because it requires equipment and takes time. As an improved technique, there is a technique in which an air valve is attached to the bag so that air can be easily injected. However, the cost is high and there is a concern about airtightness.
[0004]
A cushioning material in which air is enclosed in a bag made of a film does not allow air to escape during use and lower the cushioning capacity, so a film with low gas permeability must be used as the material. In order to achieve both bag-making processability and gas barrier properties, it is necessary to use a laminate of different plastic films. Even if the high cost of the material can be tolerated, it is contrary to today's social demand that the recyclability becomes poor by using a laminated material.
[0005]
[Problems to be solved by the invention]
The object of the present invention is as a solution to the above-mentioned problems in buffer packaging, and is not solid, and therefore does not take up space for storage, exhibits sufficient buffer performance during use, and is stacked and returned after use. It is an object of the present invention to provide a buffer pad that can be used repeatedly, has no problem in disposal, and reduces the effective use of resources and the burden on the environment.
[0006]
[Means for Solving the Problems]
The buffer pad of the present invention is a buffer pad for supporting an object to be packaged in a packaging box and absorbing an impact, and an example has a substantially trapezoidal cross section as shown in FIGS. 1 and 2. It is a sheet-like molded product (1), and a plurality of bellows-like folds (2) are provided on the side wall to provide a buffering capacity.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Various modifications can be made to the shape of the buffer pad of the present invention. First, in the illustrated example, a recess (3) for receiving the end of the package is provided on the top of the package so that the package and the buffer pad do not shift in the packaging box. The outer shape of the buffer pad is arbitrary, such as a triangular, square, or polygonal truncated pyramid, a truncated cone, or a half truncated cone. In the example shown in the figure, the top surface also has an edge on all four sides. However, depending on the relationship with the package, there may be one lacking one, two missing, or even three missing.
[0008]
In principle, the greater the number of bellows-like folds, the higher the buffering performance. Although there is a relationship with the thickness of the material and the sheet, in general, if the slope of the folded part is steep, a hard reaction, that is, a buffering behavior that does not change with a slight impact, is shown. However, it exhibits a buffering behavior that responds flexibly.
[0009]
A typical use of the buffer pad of the present invention is shown in FIG. 3 for the illustrated example. A cushion pad is applied to both ends of the packaged object (5) having a rectangular parallelepiped shape, and the three members are put together in a packaging box (6) to form a package. By carrying out such packaging, the article to be packaged is held at a certain position in the packaging box, and is protected from vibrations and shocks in the vertical and horizontal directions.
[0010]
In FIG. 1 and FIG. 2, the code | symbol (4) shows the base part of a buffer pad. The base (4) is a surface in contact with the inner wall of the packaging box, but is not an indispensable part as far as the buffer performance is concerned. On the other hand, as understood from the packaging method shown in FIG. 3, the size of the base may be appropriately enlarged if necessary or useful in determining the position of the buffer pad in the packaging box.
[0011]
The material of the buffer pad is not limited as long as it is a sheet-like material that can be expected to have a certain degree of strength. Typical examples are various plastic sheets, and the buffer pad can be manufactured by vacuum molding or blow molding. The vacuum forming includes, of course, modified forms such as pressure forming, vacuum / pressure forming, and skin pack forming.
[0012]
Another type of material is cellulosic, which can be formed into a buffer pad by pulp molding. As can be seen from this fact, in the present invention, the “sheet-like material” does not need to be a sheet at the time of molding, and includes a sheet-like material as a result of molding.
[0013]
Regardless of whether plastic is used as the material of the buffer pad or a cellulosic material, natural fiber or synthetic fiber can be used as the reinforcing material of the sheet. The use of a reinforcing material is particularly useful when a cellulosic material is used. Natural fibers include hemp, cotton, wool and the like, and synthetic fibers include many types such as polyolefin, polyester and nylon. When the material of the sheet is plastic, as the reinforcing material, a material that does not lose the form of the fiber at the time of forming the sheet, for example, a method of mixing nylon fiber that does not melt at the extrusion temperature with polyethylene is appropriate. .
[0014]
【The invention's effect】
Since the buffer pad of the present invention is a sheet-like molded product and the same type can be stacked and stored, it is not bulky unlike a solid body such as polystyrene foam. Needless to say, the weight is not inferior to that of conventional cushioning materials. The ability to stack allows them to be returned together after use and used again for packaging.
[0015]
If it is difficult to return it or it cannot be reused due to damage, it can only be disposed of, but it can be crushed and reduced in volume, so it is easy to dispose. Unlike a gas barrier laminate sheet, which is a single material and has recyclability, it can be molded again as long as it is not soiled, and this advantage is also obtained when a reinforcing material is used.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a buffer pad of the present invention. FIG. 2 is a cross-sectional view of the buffer pad of FIG.
FIG. 3 is a cross-sectional view of a package body showing a state where buffer packaging is performed using the buffer pad of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sheet-like molded article 2 Bellows-shaped folding | folding 3 Top hollow 4 Base 5 Packaged object 6 Packaging box

Claims (4)

A cushioning pad that extends from the left and right in the packaging box to support the package, absorbs shock, and holds the package, and has a substantially trapezoidal cross section, and the package is on the top surface. A sheet-like molded product having a depression for supporting the bag, and a side wall of which is provided with a plurality of bellows-like folds to provide a buffering capacity, and the depression is applied to the left and right ends of the package. A cushioning pad configured to be supported by being housed in a packaging box. The shock absorbing pad according to claim 1, wherein the material is a plastic sheet and is manufactured by vacuum molding or blow molding. The buffer pad according to claim 1, wherein the material is cellulosic and is produced by a pulp molding method. The buffer pad according to claim 2 or 3, wherein natural fiber or synthetic fiber is added as a reinforcing material.

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