JP5629806B2 - Packing material - Google Patents

Description

  The present invention relates to a packing material for packing a relatively heavy product such as an electronic device.

  Conventionally, as a packaging method for electronic devices or the like, as shown in FIG. 12, a cushioning material 2 that absorbs external shock or vibration during transportation is disposed in a cardboard case 1, and an object 100 to be packed is placed thereon. The mounting method is common. As the cushioning material, a folded cardboard or a polystyrene foam, or a pulp mold cushioning material that can be recycled using waste paper as a material is used. However, polystyrene foam causes pollution and environmental pollution, and the pulp mold cushioning material cannot be used for packing heavy objects exceeding 20 kg in terms of strength. Therefore, a cushioning material 2 including a top board 3 made of corrugated cardboard and a support 4 made of laminated corrugated cardboard is widely used for packing heavy objects.

  Further, since there are projecting portions 101 such as base rubber, casters, screws, etc. for installation on the outside of the bottom surface of the electronic device or the like to be packed 100, the cushioning material 2 has the shape and position of the projecting portions. Together, a punched hole 5 is formed.

  In such a conventional packing method, although depending on the material of the cushioning material, especially when the packaged item is heavy, if the packaged item is brought into direct contact with the cushioning material, the surface coating of the packaged item may be damaged. There have been problems such as melting due to frictional heat, and powder generated by scraping the cushioning material adhering to the surface of the object to be packed. For this reason, the packing material is usually brought into contact with the cushioning material in a state of being packed in a packaging bag made of an inexpensive resin film such as polyethylene.

  However, when the article 100 to be packed placed in a plastic packaging bag is placed on the cushioning material 2, as shown in FIG. 13, the edge of the hole 5 formed in the top surface 3 due to the weight of the article 100 to be packed. Since the packaging bag 7 is rubbed by the part 6 and the article 100, the packaging bag 7 is broken. In particular, in the case of so-called decompression packaging in which the package bag 7 is evacuated in order to protect the package object from moisture, the package object 100 and the package bag 7 are in close contact with each other. Friction and breakage become remarkable, and when the breakage occurs, there is a problem that outside air having high humidity enters the packaging bag 7. Although the thickness of the packaging bag 7 can be reduced to some extent, the flexibility of the packaging bag 7 is reduced, and the handling of the packaging bag 7 at the time of the packaging operation becomes complicated and disadvantageous in terms of cost. It was.

  Therefore, various methods for preventing the tearing of the packaging bag due to friction have been proposed. For example, Patent Document 1 discloses that a packaged article is packaged with a double-sided packaging material having excellent sliding properties, and then a pulp mold buffer is used. A packing method for storing in an object storage space defined by a material is disclosed, and a foamed polyethylene bag, a high-density polyethylene bag, and a foamed polyethylene bag laminated with a polyethylene film are described as packaging materials.

  However, in the method of Patent Document 1, since both are double-wrapped with a packaging material made of polyethylene, the double packaging material is fused by the frictional heat generated at the edge portion of the punched hole, and between the packaging materials. There was a risk that the bag would break without slipping.

JP 2000-255640 A

  In view of the above-described problems, an object of the present invention is to provide a packaging material in which a resin-made packaging bag for packaging an object to be packed is not easily broken by a load of the object to be packed.

  In order to achieve the above object, a first configuration of the present invention is a packaging material including a first packaging material, a packaging box, a cushioning material, and a second packaging material. The first packaging material is made of a resin film and directly packages an object to be packed. A packing box packs the to-be-packaged object packaged with the 1st packaging material. The cushioning material is hollow and is disposed in the gap between the inner surface of the packaging box and the packaged item. The second packaging material is formed of a resin film made of a material different from that of the first packaging material, and is disposed between the cushioning material and the first packaging material.

  According to the first configuration of the present invention, by disposing the second packaging material between the cushioning material and the first packaging material, the first packaging material can be reliably prevented from being broken. Moreover, since the second packaging material is formed of a resin different from the first packaging material, fusion with the first packaging material due to frictional heat can be suppressed.

The disassembled perspective view which shows the structure of the packaging material which concerns on 1st Embodiment of this invention. The top view of the shock absorbing material which comprises the packing material of 1st Embodiment Side view of cushioning material constituting packaging material of first embodiment The back view of the buffer material which comprises the packing material of 1st Embodiment Cross-sectional enlarged view of the buffer material in the vicinity of the incision of the cushioning material in the state in which the packing material is packed in the packing material of the first embodiment. Top view showing other shapes of cut Cross-sectional enlarged view of a buffer material in the vicinity of a hole in the packing material of the first embodiment in a state where an object to be packed is packed. The disassembled perspective view which shows the structure of the package which concerns on 2nd Embodiment of this invention. Partial plan view (FIG. 9A) showing a state in which a resin sheet is attached to the entire surface of the punch hole and a sectional view of the periphery of the punch hole in a state where an object to be packed is placed (FIG. 9B). Plan view showing other pasting patterns of resin sheet The disassembled perspective view which shows the structure of the package which concerns on 3rd Embodiment of this invention. Schematic cross-sectional view showing the state of packing an object to be packed in conventional packing material Cross-sectional enlarged view of the area around the protrusion when packing an object to be packed in a conventional packaging material in a packaging bag

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the configuration of the packaging material according to the first embodiment of the present invention. Portions common to FIG. 12 of the conventional example are denoted by the same reference numerals and description thereof is omitted. Here, packing in a cardboard case with a pallet having a pallet for transportation attached to the bottom of the cardboard case is shown, and the cardboard pallet 20 also serves as the bottom surface of the cardboard case 1 (see FIG. 12). By using such a corrugated cardboard pallet 20, it is not necessary to place the corrugated cardboard case 1 on the pallet after packing the article to be packed 100 (here, a copying machine), so that particularly large products can be easily packed and transported. Become.

  Flaps 21 are provided upright on the four sides of the cardboard pallet 20, and a through hole 21 a is formed at the center of each flap 21. In the four corners of the top surface of the cardboard pallet 20, L-shaped corner cushioning materials 15 in plan view that receive the corners of the packaged object 100 are arranged, and in the center of the top surface, rectangular cushioning materials that receive the bottom surface of the packaged object 100. 2 is arranged. The configuration of the cushioning material 2 will be described later.

  The entire package 100 is packaged with a packaging bag 7 made of a resin film so as not to directly contact the cushioning material 2 and the corner cushioning material 15. The packaging bag 7 preferably has a softness that freely deforms along the outer shape of the packaged object 100 from the viewpoint of packing workability, and is broken and discarded when the packaged object 100 is taken out. Therefore, it is desirable that it be as cheap as possible. For this reason, it is preferable to use a packaging bag 7 made of polyethylene. Further, a resin sheet 17 for preventing breakage of the packaging bag 7 is placed on the upper surface of the cardboard pallet 20.

  2 is a plan view of the cushioning material constituting the packaging material of the first embodiment, FIG. 3 is a side view of the cushioning material as viewed from the direction of arrow A in FIG. 2, and FIG. 4 is a rear view of the cushioning material. The cushioning material 2 is hollow by a top plate 3 that receives the bottom surface of the object to be packed 100 (see FIG. 1), and a support 4 made of laminated cardboard that is fixed to a plurality of locations (here, six locations) on the back surface of the top plate 3. The transmission of the impact to the to-be-packaged object 100 is relieved by the bending of the top plate 3.

  In the top plate 3, a plurality of projecting portions 101 (see FIG. 12) projecting from the bottom surface of the object to be packed 100 are opposed to each other, through holes 5 a to 5 e and notches 9 through which the projecting portion 101 passes, A cross-shaped cut 10 is formed which is spread by the portion 101. Thereby, interference with the top surface 3 and the protrusion 101 is avoided, and the entire bottom surface of the object to be packed 100 abuts on the top surface 3, so that the object to be packed 100 is stably placed on the cushioning material 2. be able to.

  Further, fold lines 11 are formed along two adjacent sides of the top surface 3, and the cushioning material 2 is arranged at a predetermined position in the cardboard pallet 20 with the fold lines 11 being bent vertically. Further, an arrow-shaped direction indicating mark 13 is formed on the top surface 3 so that an operator can confirm the installation direction of the cushioning material 2.

  Next, a packing method using the packing material of the present embodiment will be described. First, the cushioning material 2 and the corner cushioning material 15 are arranged at predetermined positions on the cardboard pallet 20. Next, after placing the resin sheet 17 so as to cover the cushioning material 2 and the corner cushioning material 15, it is put in the packaging bag 7 in advance, and the inside is evacuated and vacuum-packed as necessary. The object 100 is placed according to the shape of the cushioning material 2 and the corner cushioning material 15 and covered with a cylindrical side surface (not shown). A through hole having the same shape is formed on the side surface portion so as to overlap with the through hole 21a of the flap 21, and the cardboard pallet 20 and the side surface portion are integrated with each other by inserting a fastener in a state of being overlapped with the through hole 21a. Link.

  FIG. 5 is an enlarged cross-sectional view of the vicinity of the notch 10 of the cushioning material 2 in a state where an object to be packed is packed in the packing material of the first embodiment. As shown in FIG. 5, the protruding portion (for example, a base rubber) 101 on the bottom surface of the article to be packed 100 pushes the cross-shaped cut 10 formed on the top surface 3 of the cushioning material 2 so as to fit. At this time, each of the four bent pieces 10b formed by the cuts 10 has L-shaped edge portions, but each bent piece 10b is moved from the edge portion to the packaging bag 7 in order to swing around the bent portion 10a. The pressing force does not work.

  That is, since only the bent portion 10a having a smooth surface is pressed against the packaging bag 7, even when vibration or impact is applied during transportation, the breaking of the packaging bag 7 due to friction is effectively suppressed. Furthermore, since the resin sheet 17 is interposed between the packaging bag 7 and the top surface 3, the packaging bag 7 can be more reliably prevented from breaking.

  The shape of the notch 10 is not limited to the cross shape shown in FIG. 2, and may be a shape that allows the top surface 3 to be bent inward by the insertion of the protruding portion 101. For example, three cuts 10 may be formed radially from the center point O as shown in FIG. 6A, or six cuts 10 may be formed radially from the center point O as shown in FIG. May be. In addition, as the notch 10 becomes longer and the number increases, the bent piece 10b becomes easier to bend, and the protrusion 101 can be easily inserted. Therefore, the length and the number of the notches 10 may be adjusted according to the shape of the protruding portion 101 and the protruding amount. As shown in FIG. 10C, the center point O may be an opening having a certain area.

  FIG. 7 is an enlarged cross-sectional view of the vicinity of the punched hole 5 of the cushioning material 2 in a state where an object to be packed is packed in the packing material of the first embodiment. As shown in FIG. 7, the resin sheet 17 is interposed between the packaging bag 7 and the top surface 3 even when the protruding portion 101 passes through the punched hole 5 formed in the top surface 3. The bag 7 is not directly rubbed at the edge portion 6 of the punched hole 5, and the breakage of the packaging bag 7 can be suppressed. Since the resin sheet 17 is also interposed between the notch 9 and the packaging bag 7 and between the corner cushioning material 15 and the packaging bag 7, the edge portion of the notch 9 and the corner cushioning material 15 are provided. The tear of the packaging bag 7 which contacts can also be prevented effectively.

  The resin sheet 17 preferably has a small coefficient of friction with the packaging bag 7 and has a softness that can be mounted along the uneven shape of the cushioning material 2 and the corner cushioning material 15. When a polyethylene sheet is used, frictional heat is generated at the corners where the load of the article to be packed 100 is concentrated and the edge part 6 of the punched hole 5, and the packaging bag 7 and the resin sheet 17 are fused to form the packaging bag 7. May be broken. Therefore, the resin sheet 17 is formed of a material different from that of the packaging bag 7. For example, when the packaging bag 7 is made of polyethylene, the resin sheet 17 is preferably formed of a resin having a melting point higher than that of polyethylene, and polypropylene is preferable in consideration of flexibility and cost.

  Note that the cuts 10 as shown in FIGS. 2 and 6 may be formed in all the locations corresponding to the protrusions 101 without providing the punched holes 5 and the notches 9. In this case, depending on the material and thickness of the packaging bag 7 or the weight of the article 100, the packaging bag 7 can be prevented from breaking without using the resin sheet 17.

  FIG. 8 is an exploded perspective view showing the configuration of the packaging material according to the second embodiment of the present invention. Portions common to FIG. 1 of the first embodiment are denoted by the same reference numerals and description thereof is omitted. In the present embodiment, the resin sheet 17 is not placed on the entire upper surface of the cardboard pallet 20, but the tape-shaped resin sheet 17 with an adhesive on the back surface is used as the holes 5 a and 5 b of the cushioning material 2. It is pasted and fixed so as to cover. The configuration of the cushioning material 2, the material of the packaging bag 7 and the resin sheet 17, and the packaging method are the same as in the first embodiment, and thus the description thereof is omitted.

  According to the present embodiment, since the resin sheet 17 is attached only to the punched holes 5a and 5b where the package bag 7 is likely to be broken by the load of the article 100, the amount of the resin sheet 17 used is minimal. In addition to being limited, it is advantageous in terms of cost, and the mounting workability of the resin sheet 17 is also improved. In this embodiment, since the resin sheet 17 does not move freely on the cushioning material 2 as in the first embodiment, the resin sheet 17 is covered with the entire punch hole 5 as shown in FIG. When pasted, if the amount of deflection of the resin sheet 17 is small, as shown in FIG. 9B, the protruding portion 101 does not completely fit in the extraction hole 5 even if the article 100 is placed, There is a possibility that a gap is generated between the package object 100 and the top surface 3.

  Therefore, as shown in FIG. 10A, if the resin sheet 17 covers a part of the punched hole 5, the amount of bending of the resin sheet 17 can be increased. That is, by adjusting the ratio of the portion covered with the resin sheet 17 according to the protruding amount of the protruding portion 101, the packaged object 100 and the top surface 3 are brought into close contact with each other, thereby enabling stable packing. In FIG. 10A, since the packaging bag 7 may break at the edge portion not covered with the resin sheet 17, both sides of the punched hole 5 are made of resin as shown in FIG. You may make it cover with the sheet | seat 17 made from.

  In addition, in FIG. 8, it is set as the structure which covers only the punched holes 5a and 5b located between the support | pillars 4 (refer FIG. 3) of the shock absorbing material 2 with the resin sheet | seats 17. FIG. This is in consideration of the fact that the top surface 3 is less bent in the vicinity of the support column 4 and the friction of the packaging bag 7 at the edge portion 6 becomes larger, but the other punched holes 5 and notches 9 are also made of resin. You may affix the sheet 17 made.

  FIG. 11 is an exploded perspective view showing the configuration of the packing body according to the third embodiment of the present invention. In this embodiment, instead of using the resin sheet 17, the second packaging bag 19 double-wraps from the top of the packaging bag 7. Other configurations are the same as those in the first and second embodiments. According to the configuration of the present embodiment, it is possible to prevent the packaging bag 7 from being torn due to friction with not only the bottom surface of the article to be packed 100 but also the cushioning material contacting the side surface and the top surface. The second packaging bag 19 is formed of a resin film made of a material different from that of the packaging bag 7 like the resin sheet 17. For example, when the packaging bag 7 is made of polyethylene, polypropylene having a melting point higher than that of polyethylene is preferable.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in each of the above embodiments, the cushioning material 2 configured from the top surface 3 and the support column 4 is used, but other cushioning materials having a hollow interior such as a pulp mold cushioning material can also be used. Further, when the protruding portion 101 of the article to be packed 100 interferes with the corner cushioning material 15, the notch 10, the punched hole 5, or the notch 9 may be formed in the corner cushioning material 15. Further, the cushioning material in which the notch, the punched hole, and the notch are formed is not limited to the cushioning material 2 and the corner cushioning material 15 that contact the bottom surface of the packaged object 100, and the buffer that contacts the side surface and the top surface of the packaged object 100. It may be a material.

  In each of the above embodiments, the cardboard pallet that also serves as the bottom surface of the cardboard box and the cylindrical side surface are separate members, and after the product is placed on the cardboard pallet, the cardboard pallet and the side surface are connected together. This type of packaging material is given as an example, but it is needless to say that the present invention can also be applied to a general cardboard case in which the bottom and side surfaces are integrally formed as shown in FIG.

  The present invention provides a first packaging material made of a resin film for directly packaging an article to be packed, a packaging box for packaging an article to be packaged packed with the first packaging material, an inner surface of the packaging box, and an article to be packaged. And a second cushioning material disposed between the cushioning material and the first packaging material, and a second packaging material formed of a resin film made of a different material from the first packaging material. It is.

  Accordingly, the first packaging material can be reliably prevented from being broken, and an excellent packaging material capable of suppressing fusion of the first packaging material and the second packaging material due to frictional heat can be obtained. Furthermore, if the second packaging material is formed of a resin having a melting point higher than that of the first packaging material, fusion between the first packaging material and the second packaging material can be more reliably prevented.

DESCRIPTION OF SYMBOLS 1 Corrugated cardboard case 2 Cushioning material 3 Top surface 4 Prop 5 Punching hole 6 Edge part 7 Packaging bag (1st packaging material)
9 notch 10 notch 10a bent part 10b bent piece 15 corner cushioning material 17 resin sheet (second packaging material)
19 Second packaging bag (second packaging material)
20 Corrugated cardboard pallet 100 Object to be packed 101 Projection

Claims (3)

A first packaging material made of a resin film for directly packaging an article to be packaged, a packaging box for packaging the article to be packaged packed with the first packaging material, and a gap between the inner surface of the packaging box and the article to be packaged A hollow cushioning material disposed on the packaging material,
On the contact surface of the cushioning material with the object to be packaged, a notch that is pushed and widened by the projecting part at a portion where the projecting part of the object to be packaged abuts, or a hole or a notch through which the projecting part passes is formed. Has been
A second packaging material formed of a resin film made of a material different from that of the first packaging material is covered between the cushioning material and the first packaging material so as to cover at least a part of the cuts, punched holes, or notches. Packing material characterized by placement.   The packaging material according to claim 1, wherein a material of the second packaging material is a resin having a melting point higher than that of the first packaging material. The packaging material according to claim 1 or 2, wherein the second packaging material is attached and fixed to the cushioning material so as to cover at least a part of the punched hole or notch .

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