JPS6315180Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a packaging pad that is used inside a packaging box.

As a relatively inexpensive packaging pad, a flat rectangular parallelepiped packaging pad, which is made by cutting cardboard boxes of appropriate thickness (for example, 2 to 3 cm) into squares and stacked in multiple stages, is well known and widely used. However, since the packaging pad with this type of structure has a cross-section of the cardboard exposed around it, it is susceptible to friction when entering and exiting the packaging box, and friction with the inner surface of the packaging box caused by vibration during transportation. As a result, the cross section is abraded and paper powder is scattered inside the packaging box, resulting in the generation of dust. In other words, such packaging pads create a high level of dust inside the packaging box, which is extremely difficult to remove once such dust is generated inside the packaging box and adheres to the package. Pharmaceutical products, precision equipment, and other products that require cleanliness
The drawback was that it could not be used for packaging electronic devices, high-grade films, or special paper.

However, in order to prevent dust from being generated from such a packaging pad made of cardboard, for example, the exposed cross-section of the cardboard can be covered with tape, etc. However, since the cross-section of the cardboard is exposed around the entire circumference of the packaging pad, this process requires a large number of steps, and there is also the problem that the tape attached to the cross-section of the cardboard is easily peeled off. Ta.

Therefore, the purpose of this invention is to provide an improved packaging pad which is made of corrugated cardboard and has rounded corners, and which does not have the above-mentioned drawbacks. The main material is laminated corrugated board, and the core board is made of paperboard.
A packaging pad covered with a box-shaped covering sheet made of a sheet material having appropriate rigidity such as a corrugated cardboard/plastic sheet or a plastic corrugated board, wherein the core plate has the corners of a rectangular plate-like body. The covering sheet has an octagonal outer shape, and the covering sheet is connected to a bottom plate having a bottom shape at least equal to the shape of the flat surface of the core plate, with broken lines formed on each long side of the bottom plate. A rectangular side plate whose long side is the fold line set, and a four-part upper plate which is further connected with a fold line formed on the other long side of each side plate, and is formed into a box shape with holes at the corners. A bottom plate that is in close contact with one side of the core plate covers one side of the core plate,
The covering sheet is fixed with the four side plates that are in close contact with the sides of the core plate covering the four sides including the long sides of the core plate, and the four quartered upper plates that are in close contact with the other side of the core plate. It is characterized by its packaging being padded.

To explain the embodiment with reference to the drawings, 1 is a core plate made by cutting multi-tiered cardboard into a rectangular (octagonal) shape with corners 1a removed, and 2 is a corrugated cardboard for covering this core plate 1. The covering sheet 2 includes a bottom plate 21 having a bottom shape that is equal to the shape of the flat surface of the core plate 1, and a continuous broken line a formed on each long side of the bottom plate 21. a
A rectangular side plate 22 having a long side of (refers to one of each of four parts divided into four pieces of the same-shaped top plate)
This covering sheet 2 has a core plate 1 on top of the bottom plate 21.
, and fold each side plate 22 and quarter-divided top plate 23 inward at 90 degrees along each of the fold lines a and b.
The bottom plate 21 that is in close contact with the lower surface 11 of the core plate 1
side plates 22 that cover the lower surface of the core plate 1 and are in close contact with the exposed portion of the corrugated cardboard cross section of the core plate 1, that is, each of its side faces 12; , the four-part upper plate 23 in contact with the upper surface 13 of the core plate 1 covers the entire upper surface 13 of the core plate 1, and covers most of the adjacent side edges 23a of the four-part upper plate 23. The remaining portions 23 of the side edges 21a of the bottom plate 21, the side edges 22a of the side plates 22, and the side edges of the quarter-divided upper plate 23 are abutted against each other on the surface of the core plate 1.
The outer shape and the broken lines a and b are set so that the rounded surface 1a of the core plate 1 can be exposed flush with each corner 3a of the packaging pad 3.

The packaging pad 3 of this invention is made by covering a core plate 1 as described above with a covering sheet 2 as described above in the state described above and fixing it in the covered state. 2 in the covered state can be selected arbitrarily. For example, in one embodiment, each quartered upper plate 23 is attached to the upper surface 13 of the core plate 1 with an adhesive (not shown). ) may also be fixed in this state by gluing; in other embodiments,
By connecting the portions where the adjacent side edges 23a of each quarter-divided upper plate 23 abut against each other with tape 4 such as cellophane tape stuck to the outer surface of the quarter-divided upper plate 23, It may be fixed in this state (see FIG. 4). In this embodiment, the extended portion of the tape 4 is attached to the rounded surface 3'a of the packaging pad 3', and the surface 3'a is
The extended portion of this tape 4 is also covered.

Note that the above example shows the original shape of the packaging pad according to this invention, and the packaging pad of this invention may be a plate-shaped body whose outer shape is an octagonal one. , as shown in Figure 4,
Providing holes 5 for supporting packages on the plate surface means that
This is an optional matter. The packaging pad 3' shown in FIG. 4 has holes 5 and 6 and arcuate notches 7 formed in advance at appropriate positions in the core plate 1' and the covering sheet 2', respectively, as shown in FIGS. 5 and 6. By keeping it for a while, it can be obtained in the same manner as the packaging pad 3 described above.

In addition, in the above embodiment, the core plates 1, 1' are
Although an example has been described in which the structure is made of only corrugated cardboard, in other embodiments, a reinforcing plate such as a plywood board or a plastic plate is superimposed on the main corrugated board in order to give greater strength to the core plates 1 and 1'. The core plates 1, 1' may also be composed of
Furthermore, in the above embodiment, an example was explained in which the covering sheets 2, 2' were made of corrugated cardboard, but in other embodiments, the covering sheets 2, 2' were made of paperboard or paperboard having appropriate rigidity. It may also be constructed of a plastic sheet or plastic cardboard or the like.

Above, the packaging pad according to this invention has been described with reference to the embodiments, but the packaging pads 3 and 3' of this invention have been described above.
has the above-mentioned structure, and the rounded surfaces 3a, 3'a of the packaging pads 3, 3' have corrugated cardboard cross sections of the core materials 1, 1' mainly made of laminated corrugated cardboard. Although it is slightly exposed, this surface 3a,
3'a is a part that does not come into sliding contact with the inner surface of the box when entering and exiting the packaging box or when transporting the packaging box; it comes into sliding contact with the inner surface of the box when entering and exiting the packaging box or when transporting the packaging box. On the side surfaces 3b, 3'b of the packaging pads 3, 3', the corrugated cardboard cross section of the side surface 12 of the core material 1, 1' is covered by the side plate 22 of the covering sheet 2, 2' and is not exposed. The packaging pads 3 and 3' of this invention are designed to prevent the cross-section of the cardboard from sliding even if the side plate 22 of the covering sheet 2 comes into repeated sliding contact with the inner surface of the packaging box when it is taken in and out of the packaging box or due to vibrations during transportation. Since it does not generate paper dust, the inside of the packaging box using this can be kept at a high level of cleanliness at all times.

The packaging pad of this invention has a core material mainly made of cardboard, so it can be obtained at a low cost, and the box-shaped covering sheet that makes up the pad is one piece. Since it is a punched sheet, it can be easily processed, and the covering sheet consisting of the bottom plate, side plate, and quartered upper plate as described above can easily cover the required parts of the core plate. Therefore, the entire packaging pad can be obtained at low cost.
Another advantage is that the side plates of the covering sheet that cover the corrugated cross section of the core plate do not easily separate from the side plates.

In addition, since the packaging pad of this invention has the above-mentioned structure, if the core material is made of cardboard and other reinforcing materials, the packaging pad will be formed by simply overlapping the two. , it is possible to provide strength (for example, pressure resistance strength, torsion resistance strength, etc.) according to the application.

In addition, the covering sheet of the packaging pad of this invention is
Since the structure is as described above, in the case of a packaging pad having a square outer shape with rounded corners as shown in the example, if the covering sheet is also made of corrugated cardboard, the corrugation of the corrugated cardboard is If the fold lines a and b are crossed at a 45° direction,
It is possible to minimize the generation of cut cardboard waste, and to make the rows of the covering sheet in the packaging pad orthogonal between the top plate and the bottom plate.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing one embodiment of the packaging pad according to this invention, Fig. 2 is a perspective view of its core material, Fig. 3 is a developed view of its covering sheet, and Fig. 4 is another example. FIG. 5 is a perspective view of a packaging pad showing an embodiment of
The figure is a perspective view of the core material, and FIG. 6 is a developed view of the covering sheet. DESCRIPTION OF SYMBOLS 1... Core plate, 1a... Cornered surface, 2... Covering sheet, 3... Packaging pad, 3a... Cornered surface, 21... Bottom plate, 22... Side plate, 23... Four Split top plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A core board mainly made of laminated corrugated board is covered with a box-shaped covering sheet made of a sheet material having appropriate rigidity such as paperboard, corrugated board, plastic sheet, or plastic corrugated board. The packaging pad is made of a packaging pad, wherein the core plate has an octagonal outer shape with corners cut off from a rectangular plate, and the covering sheet has at least the shape of a flat surface of the core plate. a bottom plate having the same bottom shape; a rectangular side plate having the long sides formed with broken lines formed on each long side of the bottom plate;
Each of the side plates has a box-like shape with a hole in the corner, and the bottom plate is closely connected to one side of the core plate. Four side plates covering one side of the board and close to the side of the core plate cover four sides including the long side of the core plate, and four quartered upper plates close to the other side of the core plate. A packaging pad characterized in that a covering sheet is fixed to the packaging pad. 2. According to claim 1 of the utility model registration claim, the covering sheet is fixed in a state covering the core board as described above by bonding each quartered upper board to the upper surface of the core board with an adhesive. Packaging padded. 3. By connecting the parts where the adjacent side edges of the four-part upper plate abut each other with tape attached to the outer surface of the four-part upper plate, the covering sheet covers the core plate as described above. The packaging pad according to claim 1 of the utility model registration claim, wherein the packaging pad is fixed in a fixed state. 4. According to claim 3 of the utility model registration, the extended portion of the tape is attached to the rounded surface of the packaging pad, and the surface is also covered with the extended portion of the tape. Packaging pad as described.