JP5190095B2 - Packing material for machine parts - Google Patents

Description

  The present invention relates to a packaging material for machine parts, and more particularly to a packaging material that is advantageous in terms of cost and that can be reliably collected separately during recycling.

  As a packaging material for an article, a packaging material made of a synthetic resin foam-molded product is often used from the viewpoints of having a required strength while being lightweight and having excellent moldability. On the other hand, the synthetic resin foam molded product has a rough surface and may be deformed by oil or the like, so that it corresponds to the article to be packed in the article accommodating recess of the synthetic resin foam molded product. A non-foamed synthetic resin molded product is disposed (Patent Document 1), or both front and back surfaces of a synthetic resin foam molded product as a core material are integrally molded with a non-foamed synthetic resin molded product (Patent Document 2). . As another form of packing material, a corrugated cardboard is used as a core material, and a synthetic resin tray is placed on the article support (Patent Document 3).

Japanese Utility Model Publication No. 7-40579 JP 2002-326246 A Japanese Utility Model Publication No. 4-65790

  In the packing material of the form described in Patent Document 1, it is easy to separate the non-foamed synthetic resin molded product arranged in the article housing recess, and the separation and collection at the time of recycling are easy. However, if the synthetic resin foam molded product, which is the main body, is molded at a high magnification in order to reduce the cost, there is a risk of insufficient strength when packing heavy items such as machine parts. In addition, the surface of the foam remains on the back surface side, and when stacked in multiple stages, dust particles due to foam scraping may adhere to the packed goods, or the back surface of the packing material may be contaminated with oil. Can happen.

  In the packing material in the form described in Patent Document 2, the entire front and back surfaces of the synthetic resin foam molded article that is the core material are covered with the non-foamed synthetic resin molded article. Even when molded at a high magnification, the required strength can be ensured. However, the whole is an integrally molded product, and there remains a problem that it is not easy to separate and collect the synthetic resin foam molded product as the core material and the non-foamed synthetic resin molded product as the skin material during recycling. In particular, depending on the country, even if the material resin is the same, there is a case where it is obliged to separate and collect the foamed material and the non-foamed material, and the packaging material in the form of Patent Document 2 can deal with it. Not easy.

  The packaging material in the form described in Patent Document 3 is easy to separate and collect, and since corrugated cardboard is a base material, there is no inconvenience caused by the synthetic resin foam molded product, but it is a basic problem of corrugated cardboard. The inconvenience of strength change of the tray itself due to humidity cannot be avoided.

  The present invention has been made in view of the above circumstances, and in a packaging material composed of a core material and a skin molding material, which is a synthetic resin foam molded product, the expansion ratio as a core material to reduce costs. Even if high-quality synthetic resin foam molded products are used, the required strength can be maintained as a whole, and even when stacked in multiple stages, foreign matter may adhere to the packaged product or the back surface of the packaging material may be contaminated. It is another object of the present invention to provide an improved packaging material that is easy to separate and collect during recycling.

  The packaging material for machine parts according to the present invention is a packaging material for machine parts that is packed in a plurality of stages by packing a plurality of machine parts, and a core material that is a synthetic resin foam-molded product having a plurality of article-containing recesses; And upper and lower skin moldings made of resin sheets that are shaped to fit the outer shape of the core material and that can cover the entire core material with no gap between the core material and the core material. A fitting structure is formed between the upper skin molding material and the lower skin molding material, and a core material is sandwiched between the upper skin molding material and the lower skin molding material so as to be integrated and integrated with the core material. The upper skin molding material and the lower skin molding material are separably packed in the core material so that the upper skin molding material and the lower skin molding material can be separated and separated from the core material. The skin molding material is preferably a non-foamed molded product of the same resin as the core resin, but is not limited thereto. It may be a low-magnification foam-molded product, and may be a resin different from the core resin or a different material.

  In the packing material according to the present invention, the upper and lower skin molding materials for packing the entire core material from above and below are configured to be assembled integrally so as to be separable by the fitting structure, and the assembly work to the core material is easy and necessary. In some cases, the upper and lower skin molding materials can be separated to easily separate the core material and the skin molding material. Therefore, not only when the materials are different, but also when the same material is required to separate the foamed material from the non-foamed material, it is easy to cope with it.

  In addition, the core material is covered with a skin molding material that is integrated with a fitting structure, and the strength can be shared between the core material and the skin molding material. Even if it is molded with the same one, the packaging material as a whole can have the required strength, which leads to cost reduction. Moreover, the core material which is a synthetic resin foam molded product is covered with a skin molding material, and does not adhere to a packaged product such as a mechanical part accommodated with powdered synthetic resin foam. Dirt and deformation due to oil adhesion on the back surface when stacked are also avoided. Further, there is no change in strength due to humidity as seen when the core material is corrugated cardboard.

  Preferably, the upper and lower skin molding materials have flanges around them, and the flange portions are formed with convex portions that form a mating structure, and at locations corresponding to the flange portions of the core material. Wall thickness is reduced or removed. By making this structure, it becomes possible to pack the core material with the upper and lower skin molding materials without increasing the outer dimensions of the packing material, and it does not require a protruding part for the fitting structure, Easy handling of packing materials and less space for storage.

  In the packing material according to the present invention, the core material and the skin molding material are separate members before assembly, and can be stored separately. At that time, the upper and lower skin molding materials can be stored as a stack in a small space. Moreover, each can be reused independently, and even if any member is contaminated or damaged, only that member can be replaced with a new one and reused.

  In the packaging material according to the present invention, it is very easy to separate and collect the core material and the skin forming material during recycling, and it is environmentally friendly. Moreover, even if a synthetic resin foam molded article having a high expansion ratio is used as a core material in order to reduce costs, the packaging material can maintain a required strength. Even when packing materials are stacked in multiple stages, it is possible to prevent foreign matters from adhering to the packaged product and contamination of the back surface of the packing material.

The perspective view which decomposes | disassembles and shows one Embodiment of the packaging material by this invention for every member. It is a figure which shows the fitting part of the upper and lower skin molding materials, FIG. 2a is a top view in the state which assembled each member, FIG. 2b is sectional drawing shown for every member, FIG. 2c is c- of FIG. Sectional drawing by c line. The figure which shows the state which accumulated the upper skin molding material. The figure which shows the state which accumulated the lower skin molding material.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of a packaging material according to the present invention for each member, FIG. 2 is a view showing fitting portions of upper and lower skin molding materials, and FIG. FIG. 2B is an exploded sectional view showing each member, and FIG. 2C is a sectional view taken along the line cc of FIG. 2A. In the present invention, the packing material A includes the core material 10, and the upper skin molding material 30 and the lower skin molding material 50 that pack the entire core material 10 from above and below.

  The core material 10 is an in-mold foam-molded product made of expandable resin particles such as expandable polystyrene resin particles, and has an article accommodating space 13 defined by a bottom plate 11 and four side walls 12. A portion excluding the central region of the article storage space 13 is a thick portion, and a seat portion 14 having an appropriate shape according to the shape of the package to be stored is formed there. The four side walls 12 have step portions 15 protruding outward, and the side walls 12 (12a) above the step portions 15 are thick. A portion (12b) below the step portion 15 of the side wall 12 is an inclined surface directed inward so that the cross-sectional area gradually decreases. A notch 16 is formed on the inner wall surface of the upper end of the side wall 12 so as to be approximately the same size as the lower end surface of the core member 10, and the central part of each side wall 12 of the four circumferences is removed for the purpose of weight reduction. Yes. In addition, it is only necessary to secure a space in which flanges 37, 37 formed on the upper skin molding material 30 and the lower skin molding material 50, which will be described later, can enter, in the central portion of the side wall 12. Instead of removing the central part as a whole, a thin structure may be used.

  Although there is no restriction | limiting in particular in the foaming ratio of the core material 10 which is a synthetic resin foam molded article, Since the whole is packed by the upper skin molding material 30 and the lower skin molding material 50, it is considerably high magnification (for example, 40-80) The required strength as the packaging material A can be maintained even in the case of a molded product of about twice the size. Therefore, for example, even if the packaged item is a heavy object around the engine such as a camshaft, the packaged material A can be used for required distribution without being deformed.

  In this example, the upper skin molding material 30 is a vacuum molded product of a polystyrene resin sheet having a thickness of about 0.5 mm, and the upper half of the core material 10, that is, the portion above the step portion 15 of the core material 10 is formed. The shape is such that it can be entirely covered along its outer shape. That is, the side surface portion 32 of the upper skin molding material 30 has a space S in which the portion of the side wall 12 (12 a) higher than the step portion 15 of the core material 10 enters the inside. The upper side wall 12 (12a) is covered from the outside. The bottom portion 33 is a portion that covers the upper surface portion of the bottom plate 11 of the core member 10 from above, and the concave portion 34 is a portion that covers the seat portion 14 from above. Further, the step portion 36 is a portion that covers the cutout portion 16 of the core material 10 from above.

  In the upper skin molding material 30, horizontal flanges 37 are respectively formed in the four regions corresponding to the portions from which the side walls 12 of the core material 10 are removed. The 1st convex part 38 is integrally molded. Of the four horizontal flange portions 37, a vertical reinforcing rib 39 is formed on the rising wall on the horizontal flange portion 37 a side located between the recesses 34, 34, and the side wall 12 of the core material 10 is formed in that portion. The absence of strength prevents the upper skin molding material 30 from buckling at that portion.

  The lower skin molding material 50 is a vacuum molded product of a polystyrene resin sheet having a thickness of about 0.5 mm in this example, like the upper skin molding material 30, and is the lower half of the core material 10, that is, the core material 10. The side wall portion 12b below the step portion 15 has a shape that can cover all along the outline. That is, the side surface portion 52 is a portion that covers from the outside the portion of the side wall 12 (12b) that is inclined inwardly below the step portion 15 of the core member 10, and is inclined inward along the inclined surface of the side surface 12. . The bottom portion 53 is a portion that covers the bottom surface of the core material 10 from below.

  The upper edges of the four side portions 52 are horizontal flanges 57, and the horizontal flanges 57 abut against the step portion 15 of the core member 10 from below. As described above, the central portion of the four side walls 12 of the core material 10 is removed, and the stepped portion 15 does not exist in that portion. Therefore, in this region, the horizontal flange 57 and the upper surface of the lower skin molding material 50 The horizontal flanges 37 of the skin molding material 30 are in contact with each other. Then, the portion of the horizontal flange 57 that faces the first convex portion 38 formed on the horizontal flange 37 of the upper skin molding material 30 at the time of the contact is free to the first convex portion 38. A second convex portion 58 of a size that fits inside without being separated is integrally formed.

  When the core material 10, the upper skin molding material 30, and the lower skin molding material 50 are not used as packing materials, they are stored separately. As shown in FIG. 3, the upper skin molding material 30 is placed in a posture in which the side surface portion 32 of the upper skin molding material 30 positioned in the lower part enters the space S formed in the side surface portion 32. By reducing the thickness, a large number of upper skin molding materials 30 can be stacked as a stack. The lower skin molding material 50 is also a surface in which the side surface portion 52 is inclined inward, and as shown in FIG. 4, it is possible to stack a large number of lower skin molding materials 50 as a stack with a reduced stacking height.

  Each member (the core material 10, the upper skin molding material 30, and the lower skin molding material 50) individually stored in the storage space as described above is carried into the packaging site and assembled as one package A. At the time of assembly, the core material 10 is sandwiched between the upper skin molding material 30 and the lower skin molding material 50 from above and below, and the horizontal flange 37 of the upper skin molding material 30 and the horizontal flange 57 of the lower skin molding material 50 are brought into contact with each other. Then, the four second convex portions 58 are respectively fitted into the four first convex portions 38 so that the three members are detachably integrated to form the packaging material A. Even if the core material 10 is a high-magnification synthetic resin foam molded product, the whole is covered with the upper skin molding material 30 and the lower skin molding material 50, so that the packaging material A has sufficient strength. Become.

  Packing material A containing the desired packing product is stacked in multiple stages so that the bottom of the upper packing material A is fitted into the notch 16, and the entire packing material A is covered with an appropriate lid. Tighten with a string to make it stable and use it for logistics. The entire surface of the core material 10 is covered with the upper skin molding material 30 and the lower skin molding material 50, and the core material 10 does not adhere to a packaged product containing synthetic resin foam dust. When stacking, it is also possible to avoid contamination and deformation due to oil adhesion on the back surface.

  When the core material 10, the upper skin molding material 30, and the lower skin molding material 50 are damaged or soiled, or when the entire packing material A is disposed, the upper skin molding material 30 and the lower skin molding material 30 By pulling the skin molding material 50 in the peeling direction, the fitting between the first convex portion 38 and the second convex portion 58 can be easily released, so that the members can be easily replaced. The separation and collection of members can also be performed reliably.

  In addition, the dimension of the upper skin molding material 30 and the lower skin molding material 50 is a dimension which can cover the core material 10 in the state which does not have a clearance gap substantially from the outside, The point of stabilization of the package to accommodate However, it is desirable that the upper skin molding material 30 and the lower skin molding material 50 have somewhat larger dimensions in order to perform the assembly operation easily and quickly. In this case, a slight gap is generated between the core material 10 and the upper skin molding material 30 or the lower skin molding material 50 after assembly, but the upper skin molding material 30 and the lower skin molding material 50 are the core material depending on the weight of the packaged product. Since it deform | transforms in the direction which eliminates the clearance gap between 10, the attitude | position of the packaged goods in physical distribution is maintained in the stable state.

  In the above description, the horizontal flange 37 of the upper skin molding material 30 and the horizontal flange 57 of the lower skin molding material 50 are inserted into the removed portion of the side wall 12 of the core material 10. This is to reduce the weight of the core material 10 and not to increase the outer dimensions of the packing material A. When such a requirement is not required, the flanges 37 and 57 are projected to the side of the core material 10. The intended purpose of the packaging material according to the present invention can be achieved even if the first convex portion 38 and the second convex portion 58 are provided there.

A: Packing material, 10: Core material that is a synthetic resin foam molding, 11 ... Bottom plate, 12 ... Side wall, 13 ... Article storage space, 14 ... Seat part, 15 ... Stepped part protruding outward, 16 ... Notch part, DESCRIPTION OF SYMBOLS 30 ... Upper skin molding material, 32 ... Side part, S ... Space formed in side part, 33 ... Bottom part, 34 ... Concave part, 36 ... Step part, 37 ... Horizontal flange, 38 ... First convex part, 39 ... reinforcing rib, 50 ... lower skin molding material, 52 ... side part, 53 ... bottom part, 57 ... horizontal flange, 58 ... second convex part

Claims (6)

With recycled separately collected, a recycling machinery part product packaging materials which are staked in multiple stages to packing multiple of machine parts,
A core material that is a synthetic resin foam molded article provided with a plurality of article-containing recesses;
An upper skin molding material comprising a resin sheet molded in a dimension along the outer shape of the core material and capable of covering the upper half of the core material with no gap between the core material;
Shape along the outer shape of the core material, and the table below skin molding material with no clearance formed of a resin sheet formed with dimensions that can cover the lower half of the core material between the core Have
The upper skin molding material and the lower skin molding material are molded into a shape in which a side surface portion forming a space covering the core material is inclined inward,
In the upper skin molding material and the lower skin molding material , a fitting structure is formed at a substantially middle height position of the core material ,
The fitting structure, sandwiched from above and below the core material by said on skin layer forming material and the lower skin layer forming material, Rutotomoni integrally assembled so as to cover the entire core, the skin on integrated with the core material that the upper skin layer forming material and the lower skin layer forming material is fitted detachably at an intermediate height position of the core material to the molding material and the lower skin layer forming material and said core material so as to be separated is separated from the core material recycling machinery part product packaging materials characterized by. The upper and the skin layer forming material and the lower skin layer forming material has a flange portion on its periphery, the fitting structure for recycling machine part article according to claim 1, characterized in that it is formed on the flange portion packaging materials. Examples fitting structure, for recycling machine unit product packing material according to claim 1 or 2, characterized in that the convex portion to be paired in one direction has a structure fitted. The core material has a portion where the wall thickness of the wall portion is thin or removed,
The upper skin molding material and the lower skin molding material have at least a flange portion of a size corresponding to a portion where the wall thickness of the wall portion is thin or removed, and the flange portion has a fitting structure. recycling machinery unit product packing material according to claim 1, characterized in that paired protrusions in one direction is formed to form. Recycling machinery unit product packing material according to claim 4, characterized in that reinforcing ribs are formed on the side portion of the portion where the flange portion is formed in the upper skin layer forming material. Recycling machinery unit product packing material according to any one of claims 1 5, characterized in that it has been formed in the core material higher magnification than 40 times.

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