JP2007254016A - Packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve efficiency in storage or transportation of a packed object after packing without spoiling workability in packing the packed object, in a packaging material with a type that an upper packaging material having an upper tube part to fit on the outside of a lower tube part of a lower packaging material is covered on the lower packaging material from the upside. <P>SOLUTION: The packaging material 1 to pack a product 10 comprises: the lower packaging material 2 made of a corrugated board; and the upper packaging material 4 made of a corrugated board. The lower packaging material 2 has the lower tube part 22 stretching upward and the product 10 is placed thereon. The upper packaging material 4, which has the upper tube part 42 stretching downward and being fit on the outside of the lower tube part 22, covers the lower packaging material 2 while the upper tube part 42 is inserted into the lower tube 22 from the upside. Tilts (A, B, C, D) are provided on the periphery of the lower tube part and/or the upper tube part 42. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a packaging material, in particular, a packaging material of a type in which an upper packaging member having an upper cylindrical portion that fits outside a lower cylindrical portion of a lower packaging member is covered from above the lower packaging member.

  Conventionally, as a packaging material for packaging an outdoor unit as an article to be packaged, a lower packaging member made of cardboard on which the outdoor unit is placed, and an upper packaging member made of cardboard that can be placed on the lower packaging member, There is something with. The lower packaging member has a substantially rectangular bottom surface portion and a rectangular tubular lower tube portion extending upward from the periphery of the bottom surface portion. The upper packaging member has a substantially rectangular top surface portion and a rectangular tubular upper tube portion that extends downward from the periphery of the top surface portion and fits outside the lower tube portion.

When packaging an outdoor unit using such a packaging material, first, the outdoor unit is placed on the lower packaging member, the upper packaging member is covered from above, and the upper cylindrical portion is placed on the lower cylindrical portion from above. It is made to be in the inserted state (see Patent Document 1).
Japanese Patent Laid-Open No. 11-236088

  In the packaging operation using the above-described packaging material, it is necessary to insert the upper cylindrical portion into the lower cylindrical portion from above so that the upper cylindrical portion and the lower cylindrical portion have an overlapping margin in the vertical direction. However, when the upper tube portion is inserted into the lower tube portion, the periphery of the upper tube portion may be caught by the periphery of the lower tube portion and may not be inserted smoothly. In particular, when such a packaging operation is performed by a single worker, the presence of an item to be packaged (in this case, an outdoor unit) causes the operator to view the peripheral edge of the upper cylindrical portion and the peripheral edge of the lower cylindrical portion. As a result, it becomes impossible to visually check the back side portion, and the peripheral edge of the upper cylindrical portion is caught by the peripheral edge of the lower cylindrical portion, and there are many cases where smooth insertion is impossible.

On the other hand, the gap between the two cylindrical portions is secured by increasing the size of the upper cylindrical portion of the upper packaging member as compared with the size of the lower cylindrical portion of the lower packaging member. When the portion is inserted, the peripheral edge of the upper cylindrical portion is caught on the peripheral edge of the lower cylindrical portion, so that the possibility of being unable to insert smoothly is reduced and the workability of the packaging operation is not impaired.
However, if the size of the upper cylinder part of the upper packaging member is made larger than the size of the lower cylinder part of the lower packaging member, the plane size of the package after packaging becomes larger. However, this increases the storage space of the outdoor unit) and reduces the loading efficiency during transportation, making the distribution process such as storage and transportation inefficient, resulting in an increase in logistics costs. Has occurred.

  An object of the present invention is to improve workability when packaging an object to be packaged in a packaging material of a type in which an upper packaging member having an upper cylindrical portion that fits outside a lower cylindrical portion of the lower packaging member is covered from above the lower packaging member. The purpose is to improve the efficiency of storing and transporting the packaged goods after packaging without damaging them.

  A packaging material according to a first invention is a packaging material for packaging an article to be packaged, and includes a lower packaging member made of cardboard and an upper packaging member made of cardboard. The lower packaging member has a lower cylindrical portion extending upward, and a packaged item is placed thereon. The upper packaging member has an upper cylindrical portion that extends downward and fits outside the lower cylindrical portion, and can be covered on the lower packaging member with the upper cylindrical portion inserted from above into the lower cylindrical portion. is there. And the inclination is provided in the periphery of a lower cylinder part, and / or the periphery of an upper cylinder part.

  In this packaging material, since the inclination is provided in the peripheral edge of the lower cylindrical part and / or the peripheral edge of the upper cylindrical part, when covering the upper packaging member from above the lower packaging member in the packaging operation of the packaged article, First, a portion of the periphery of the upper tube portion that is closest to the periphery of the lower tube portion can be inserted into the lower tube portion, and then another portion of the periphery of the upper tube portion can be further inserted into the lower tube portion. As described above, when the upper cylindrical portion can be gradually inserted from the part of the lower cylindrical portion to the entire portion, the peripheral portion of the upper cylindrical portion is less likely to be caught by the peripheral portion of the lower cylindrical portion. Then, as in the prior art, by increasing the size of the upper cylindrical portion compared to the size of the lower cylindrical portion, the periphery of the upper cylindrical portion becomes the peripheral edge of the lower cylindrical portion without increasing the gap between the two members. The possibility of being caught can be reduced, and the workability when performing the operation of covering the upper packaging member from above the lower packaging member is less likely to be impaired.

  Thus, if the packaging material is packaged using this packaging material, the workability when performing the work of covering the upper packaging member from above the lower packaging member is not impaired, and the upper cylindrical portion and the lower cylindrical portion are As a result, it is possible to improve the efficiency of storing and transporting the articles to be packaged after packaging.

The packaging material concerning 2nd invention is the packaging material concerning 1st invention, The clearance gap between the outer surface of a lower cylinder part and the inner surface of an upper cylinder part is less than 10 mm.
In this packaging material, since the gap between the outer surface of the lower cylinder part and the inner surface of the upper cylinder part is less than 10 mm, the efficiency of storing and transporting the packaged articles after packaging can be further improved.
In addition, when storing and transporting the packaged items after packaging, a stretchable resin film called a stretch film may be wound around the upper cylinder, but in this case, the outer surface and upper part of the lower cylinder If the gap with the inner surface of the tube portion is 10 mm or more, the shrinkage force of the stretch film narrows the gap between the lower tube portion and the upper tube portion, and the upper tube portion is deformed, resulting in a decrease in packaging quality. It becomes a factor. However, in this packaging material, the gap between the lower cylindrical portion and the upper cylindrical portion can be reduced by providing an inclination on the peripheral edge of the lower cylindrical portion and / or the peripheral edge of the upper cylindrical portion. Taking advantage of this advantage, the gap between the outer surface of the lower tube portion and the inner surface of the upper tube portion is made less than 10 mm, so even when the stretch film is wrapped around the upper tube portion, the upper tube due to the shrinkage force of the stretch film The deformation of the part can be suppressed as much as possible.
Thus, if the packaging material is packaged using this packaging material, the efficiency of storage and transportation of the packaging material after packaging can be further improved, and the stretch film is wound around the upper cylinder portion. Deformation of the upper cylindrical portion can be suppressed as much as possible.

  The packaging material according to the third aspect of the invention is the packaging material according to the first or second aspect of the invention, wherein the inclination is when the packaged material with the upper packaging member covered on the lower packaging member is viewed from one side in the horizontal direction. In addition, the lower peripheral portion of the lower cylindrical portion on the near side of the article to be packaged is lower than the peripheral portion of the lower cylindrical portion on the inner side of the article to be packaged, and / or the upper cylindrical portion on the inner side of the article to be packaged. It is provided so that the periphery of the upper cylinder part on the near side of the packaged object is higher than the periphery.

In this packaging material, when the peripheral edge of the lower cylindrical portion and / or the inclination of the peripheral edge of the upper cylindrical portion is viewed from one side in the horizontal direction when the article to be wrapped is covered with the lower packaging member, Compared to the peripheral edge of the lower tube portion on the back side of the packaged object, the peripheral edge of the lower tube portion on the near side of the package object is lower and / or on the periphery of the upper tube portion on the deep side of the package object. Compared to the case where the packaging work of the package is performed by one worker, the peripheral edge of the upper cylinder is provided so that the circumference of the upper cylinder on the near side of the package is higher. Even if it is difficult to visually observe the back side portion of the peripheral edge of the lower cylindrical portion, first, the lower peripheral portion of the upper cylindrical portion is set to the lower cylindrical portion of the upper cylindrical portion. After that, further down the peripheral edge of the upper cylinder part on the near side of the package It can be inserted into the cylindrical portion. In this way, when it becomes possible to insert the upper cylindrical portion in order from the inner peripheral edge of the upper cylindrical portion to the lower peripheral portion of the upper cylindrical portion, the upper cylindrical portion can be inserted in this order. There is less possibility that the outer periphery of the packaged object, which is difficult for the operator to visually check, will be caught by the periphery of the lower cylindrical portion.
As a result, if the packaging material is packaged using this packaging material, the peripheral edge of the upper cylindrical portion and the peripheral edge of the lower cylindrical portion are as in the case where the packaging work of the packaging material is performed by one worker. Even when it is difficult for the operator to visually observe the back portion, the workability when performing the operation of covering the upper packaging member from above the lower packaging member is less likely to be impaired.

  A packaging material according to a fourth invention is the packaging material according to the first to third inventions, wherein the upper packaging member and the lower packaging member are formed by bending a corrugated plate-like material cut into a predetermined shape. Is formed by. The seam portion of the plate-like material appearing in the upper cylindrical portion and the seam portion of the plate-like material appearing in the lower cylindrical portion are viewed from one side in the horizontal direction of the packaged article with the upper packaging member covered by the lower packaging member. In this case, it is provided on the near side of the packaged item.

Since the upper packaging member and the lower packaging member that constitute this packaging material are formed by folding a corrugated plate material, there is a seam of the plate material somewhere in the upper and lower tube portions. Will do. For this reason, when covering an upper packaging member from the upper direction of a lower packaging member in the packaging operation | work of to-be-packaged goods, there exists a possibility that these seams may be caught.
However, in this packaging material, the seam portion of the plate-like material appearing in the upper cylindrical portion and the seam portion of the plate-like material appearing in the lower cylindrical portion are to be packaged in a state where the upper packaging member is covered with the lower packaging member. Since it is provided on the front side of the package when viewed from one side in the horizontal direction, the peripheral edge and the lower part of the upper cylinder part and the lower part of the package are packed by a single operator. Even if it is difficult for the operator to see the back side of the peripheral edge of the tube portion, the operator can see the joint portion of the plate material, so the joint portion of the plate material It becomes easy to avoid getting caught.

  As a result, if the packaging material is packaged using this packaging material, the peripheral edge of the upper cylindrical portion and the peripheral edge of the lower cylindrical portion are as in the case where the packaging work of the packaging material is performed by one worker. Even when it is difficult for the operator to visually observe the back portion, the workability when performing the operation of covering the upper packaging member from above the lower packaging member is less likely to be impaired.

As described above, according to the present invention, the following effects can be obtained.
In 1st invention, so that the workability | operativity at the time of performing the operation | work which covers an upper packaging member from the upper direction of a lower packaging member is not impaired, so that the clearance gap between an upper cylinder part and a lower cylinder part can be made small. As a result, it is possible to improve the efficiency of storage and transportation of the packaged goods after packaging.
In the second invention, it is possible to further improve the efficiency of storing and transporting the article to be packaged after packaging, and to suppress the deformation of the upper cylinder part caused by winding the stretch film around the upper cylinder part as much as possible.

In the third invention, as in the case where the packaging work of the article to be packaged is performed by one worker, the portion on the back side as viewed from the worker of the peripheral edge of the upper cylindrical portion and the peripheral edge of the lower cylindrical portion is visually observed. Even if it is difficult to do, the workability at the time of performing the operation | work which covers an upper packaging member from the upper direction of a lower packaging member becomes difficult to be impaired.
In the fourth invention, as in the case where the packaging work of the article to be packaged is performed by one worker, the portion on the back side as viewed from the worker of the peripheral edge of the upper cylindrical portion and the peripheral edge of the lower cylindrical portion is visually observed. Even if it is difficult to do, the workability at the time of performing the operation | work which covers an upper packaging member from the upper direction of a lower packaging member becomes difficult to be impaired.

Hereinafter, an embodiment of a packaging material according to the present invention will be described based on the drawings.
(1) Configuration of Packaging Material FIG. 1 is an exploded perspective view showing a packaging material 1 according to an embodiment of the present invention (in addition, the product 10 is shown by a two-dot chain line). In addition, the direction (namely, the arrow side which shows the packaging worker access direction shown in FIG. 1) which the packaging operator who packages the product 10 which is a packaged object accesses is the near side of the packaging material 1 or the packaged item 10. The far side as viewed from the packaging worker access direction is the back side of the packaging material 1 or the article to be packaged 10. Further, the packaging material 1 or the article to be packaged 10 flows from the left side to the right side as viewed from the packaging worker access direction when viewed from the front side (that is, toward the arrow side indicating the line flow direction shown in FIG. 1). A work line is provided so that work can be performed. Here, in the present embodiment, the product 10 is a machine product having a vertically long and substantially rectangular parallelepiped shape.
In the present embodiment, the packaging material 1 is a packaging material for packaging the product 10, and mainly includes a lower packaging member 2 and an upper packaging member 4.

<Lower packaging material>
The lower wrapping member 2 is a cardboard box-shaped member having an open upper surface, and a bottom surface portion 21 on which the product 10 is placed directly or via a cushioning material and the like, and upward from the periphery of the bottom surface portion 21. And a lower cylindrical portion 22 that extends. In the present embodiment, the bottom surface portion 21 is a substantially square or substantially rectangular portion. In the present embodiment, the lower cylindrical portion 22 is a rectangular cylindrical portion extending upward from the periphery of the bottom surface portion 21. The lower cylindrical portion 22 mainly includes a first wall portion 23 that forms a wall surface on the near side, a second wall portion 24 that forms a wall surface on the right side, a third wall portion 25 that forms a wall surface on the back side, and a left side. And a fourth wall portion 26 constituting the wall surface. The first wall portion 23 is a rectangular portion having a horizontally long shape when viewed from the front side. The second wall portion 24 is a horizontally long rectangular portion extending so that the wall surface height increases smoothly from the right end of the first wall portion 23 toward the back side. The third wall portion 25 is a horizontally long rectangular portion extending from the back end of the second wall portion 24 toward the left side. The fourth wall portion 26 is a horizontally long rectangular portion that extends from the left end of the first wall portion 23 toward the back side (that is, the left end of the third wall portion 25) so that the wall surface height increases smoothly. It is. As described above, in the present embodiment, the upper peripheral edge of the lower cylindrical portion 22 is provided with the slopes A and B by smoothly changing the wall surface height from the near side toward the far side. More specifically, the inclinations A and B are the lower cylindrical portion 22 on the back side (specifically, the back side portion of the second wall portion 24, the back side portions of the third wall portion 25 and the fourth wall portion 26). ) The upper peripheral edge of the lower cylindrical part 22 (specifically, the front side part of the first wall part 23, the second wall part 24, and the front side part of the fourth wall part 26) on the front side compared to the upper peripheral edge) Is provided to be low.

  The lower packaging member 2 is formed by bending a corrugated cardboard plate material cut into a predetermined shape. In the present embodiment, as shown in FIG. 2, the lower packaging member 2 includes a lower cylindrical portion 22 (more specifically, first to fourth wall portions 23 to 26) and a bottom surface portion 21 (more specifically, Are formed with a pair of flaps 21c, 21d formed on the second and fourth wall portions 24, 26 and a pair of flaps 21a, 21b) formed on the first and third wall portions 23, 25. After the plate-like material 30 is bent at the position of the dotted line, the joining portion 30a formed at the front end of the fourth wall portion 26 and the left end of the first wall portion 23 are joined by bonding or the like. ing. Thus, on the front side of the lower cylindrical portion 22 (more specifically, between the left end of the first wall portion 23 and the front end of the fourth wall portion 26), a corrugated plate-like material is used. A seam portion 27 of the plate-like material 30 that always appears when the cylindrical portion is formed by bending is provided. Here, FIG. 2 is a development view of the lower packaging member 2.

<Upper packaging material>
The upper packaging member 4 is a box-shaped member made of corrugated cardboard with an open bottom surface, and extends downward from the top surface portion 41 where the top portion of the product 10 contacts directly or via a cushioning material or the like, and the periphery of the top surface portion 41. And an upper cylindrical portion 42 that fits outside the lower cylindrical portion 22. That is, the packaging material 1 can be put on the lower packaging member 2 in a state where the upper cylindrical portion 42 of the upper packaging member 4 is inserted into the lower cylindrical portion 22 of the lower packaging member 2 from above. In the present embodiment, the top surface portion 41 is a substantially square or substantially rectangular portion. In the present embodiment, the upper cylindrical portion 42 is a rectangular cylindrical portion that extends downward from the periphery of the top surface portion 41. The upper cylinder part 42 is mainly composed of a first wall part 43 constituting the front wall face, a second wall part 44 constituting the right wall face, a third wall part 45 constituting the rear wall face, and the left side. And a fourth wall portion 46 constituting the wall surface. The first wall portion 43 is a rectangular portion having a vertically long shape when viewed from the front side. The second wall portion 44 is a vertically long rectangular portion extending from the right end of the first wall portion 43 toward the back side. The third wall portion 45 is a vertically long rectangular portion extending from the back end of the second wall portion 44 toward the left side. The fourth wall portion 46 is a vertically long rectangular portion extending from the left end of the first wall portion 43 toward the back side (that is, the left end of the third wall portion 45). Thus, in this embodiment, the wall surface height of the upper cylinder part 42 is the same in the perimeter.

  The upper packaging member 4 is formed by bending a corrugated cardboard plate material cut into a predetermined shape. In the present embodiment, as shown in FIG. 3, the upper packaging member 4 includes an upper cylindrical portion 42 (more specifically, first to fourth wall portions 43 to 46) and a top surface portion 41 (more specifically, Is formed with a pair of flaps 41a, 41b formed on the second and fourth wall portions 44, 46 and a pair of flaps 41c, 41d) formed on the first and third wall portions 43, 45. After the plate-like material 50 is bent at the position of the dotted line, the joining portion 50d formed at the right end of the first wall portion 43 and the front side end of the second wall portion 44 are joined by bonding or the like. ing. Thus, on the front side of the upper cylindrical portion 42 (more specifically, between the right side end of the first wall portion 43 and the front side end of the second wall portion 44), a plate-like material made of cardboard is used. A seam portion 47 of the plate-like material 50 that always appears when the cylindrical portion is formed by bending is provided. That is, the joint part 47 of the upper cylinder part 42 and the joint part 27 of the lower cylinder part 22 are both arranged on the front side. Further, the seam portion 47 of the upper cylindrical portion 42 is disposed on the right front side, and the seam portion 27 of the lower cylindrical portion 22 is disposed on the left front side, and the upper packaging member 4 is placed on the lower packaging member 2 from above. In the state, they do not overlap each other. Here, FIG. 3 is a development view of the upper packaging member 4.

  As described above, the packaging material 1 of the present embodiment is a type of packaging material that covers the upper packaging member 4 having the upper cylindrical portion 42 that fits outside the lower cylindrical portion 22 of the lower packaging member 2 from above the lower packaging member 2. And the slopes A and B are provided on the upper peripheral edge of the lower cylindrical portion 22. When the packaging material 1 is used to package the product 10, the lower peripheral edge of the upper cylindrical portion 42 is caught on the upper peripheral edge of the lower cylindrical portion 22 due to the slopes A and B provided on the upper peripheral edge of the lower cylindrical portion 22. The fear can be reduced (this point will be described in detail in the description of the packaging operation described later). Therefore, in the packaging material 1 of the present embodiment, as shown in FIG. 4, the lower cylinder portion 22 of the lower packaging member 2 (more specifically, the outer surface of the lower cylinder portion 22) and the upper cylinder of the upper packaging member 4. The gap C between the upper cylinder portion and the lower cylinder portion in the type of packaging material in which the gap C between the portion 42 (more specifically, the inner surface of the upper cylinder portion 42) is covered with the conventional upper packaging member from above the lower packaging member. Smaller than that. In the present embodiment, the gap C is less than 10 mm. For this reason, when storing and transporting the product 10 after packaging, the stretch film 11 may be wound around the upper cylinder part 42, but in this case as well, the deformation of the upper cylinder part 42 due to the contraction force of the stretch film 11 may occur. It can be suppressed as much as possible. Here, FIG. 4 is a sectional view of the packaging material 1 (in addition, the product 10 is shown by a two-dot chain line).

(2) Packaging Operation Next, an operation procedure for packaging the product 10 as an article to be packaged using the packaging material 1 will be described with reference to FIGS. 1 and 4. Note that the packaging work of the product 10 is performed by a packaging worker alone from one side in the horizontal direction of the product 10 (that is, the packaging worker access direction in FIG. 1).
First, the product 10 is placed on the lower packaging member 2.

  Next, the upper packaging member 4 is covered from above the lower packaging member 2 on which the product 10 is placed. At this time, since the slopes A and B are provided on the upper peripheral edge of the lower cylindrical portion 22, the back side portion closest to the upper peripheral edge of the lower cylindrical portion 22 among the lower peripheral edges of the upper cylindrical portion 42 (here, the first The back side portion of the second wall portion 44, the back side portion of the third wall portion 45 and the fourth wall portion 46) is the back side portion of the lower cylindrical portion 22 (here, the back side portion of the second wall portion 24, the third It is inserted into the wall portion 25 and the back wall portion of the fourth wall portion 26, and then further to the near side portion of the lower peripheral edge of the upper cylindrical portion 42 (here, in front of the first wall portion 43 and the second wall portion 44). The side portion and the front side portion of the fourth wall portion 46 are the front side portions of the lower cylindrical portion 22 (here, the front side portions of the first wall portion 23 and the second wall portion 24 and the front side of the fourth wall portion 26). Part).

  As described above, when the upper cylindrical portion 42 can be gradually inserted into the entire lower cylindrical portion 22, the lower peripheral edge of the upper cylindrical portion 42 may be caught on the upper peripheral edge of the lower cylindrical portion 22. Less. Then, as in the prior art, by making the size of the upper cylinder part 42 sufficiently larger than the size of the lower cylinder part 22, it is not necessary to increase the gap C between the two members (here, the gap C is 10 mm). However, the lower peripheral edge of the upper cylindrical portion 42 can be less likely to be caught by the peripheral edge of the lower cylindrical portion 22, and the work for covering the upper packaging member 4 from above the lower packaging member 2 is performed. It is hard to lose the nature. In addition, since the difference in wall height between the front side portion and the back side portion of the lower cylindrical portion 22 is provided by the inclinations A and B, the back side portion of the upper cylindrical portion 42 is changed to the back side portion of the lower cylindrical portion 22. When the front side portion of the upper cylindrical portion 42 is inserted into the front side portion of the lower cylindrical portion 22 after being inserted into the front side, the hook is less likely to occur.

  Moreover, since this packaging operation is performed by one packaging operator, it is difficult for the packaging operator to visually observe the back side portion of the lower peripheral edge of the upper cylindrical portion 42 and the upper peripheral edge of the lower cylindrical portion 22. However, even in such a case, as described above, first, the back side portion of the lower peripheral edge of the upper tube portion 42 is inserted into the back side portion of the lower tube portion 22, and then the upper tube portion is further inserted. Since the front side portion of the lower peripheral edge of 42 can be inserted into the front side portion of the lower cylindrical portion 22, the lower peripheral edge of the lower cylindrical portion of the upper cylindrical portion that is difficult for the packaging operator to visually observe is the lower cylinder. The possibility of being caught on the upper peripheral edge of the portion 22 is reduced.

  Further, since the joint portion 47 of the plate-like material appearing in the upper cylindrical portion 42 and the joint portion 27 of the plate-like material appearing in the lower cylindrical portion 22 are provided on the near side, the packaging operator can connect these joint portions 27. 47, the left front side portion of the upper cylindrical portion 42 is caught by the joint portion 27 of the lower cylindrical portion 22, or the joint portion 47 of the upper cylindrical portion 42 is caught by the right front side portion of the lower cylindrical portion 22. It is easy to avoid.

  As described above, by packaging the product 10 that is the package object using the packaging material 1 of the present embodiment, the workability when performing the operation of covering the upper packaging member 4 from above the lower packaging member 2 is improved. Since it becomes difficult to damage, even one packaging operator can easily perform the packaging operation. And since it becomes difficult to impair the workability | operativity of a packaging operation | work, since it becomes possible to make the clearance gap C between the upper cylinder part 42 and the lower cylinder part 22 small, the plane size of the upper packaging member 4 is made small. Thus, it is possible to improve the efficiency of storage and transportation of the product 10 as an article to be packaged after packaging. Further, by reducing the gap C, the amount of material used for the upper packaging member 4 can be reduced, so that the cost can be reduced. Moreover, when the gap C between the outer surface of the lower cylindrical portion 22 and the inner surface of the upper cylindrical portion 42 is less than 10 mm, the efficiency of storage and transportation of the product 10 after packaging is further improved, and a stretch film is applied to the product 10 after packaging. Even when the roll 11 is wound, the deformation of the upper cylindrical portion 42 due to the contraction force of the stretch film 11 can be suppressed as much as possible, so that deterioration of the packaging quality can also be prevented.

(3) Modification 1
In the above-described embodiment, by providing the slopes A and B on the upper peripheral edge of the lower cylindrical portion 22, the upper cylindrical portion 42 can be gradually inserted into the entire lower cylindrical portion 22 from a part thereof. The packaging material 1 is obtained in which the workability when performing the operation of covering the upper packaging member 4 from the upper side of the lower packaging member 2 is not impaired, but as shown in FIGS. By providing slopes C and D on the lower peripheral edge, the packaging material 1 may be obtained in which the workability when performing the work of covering the upper packaging member 4 from above the lower packaging member 2 is not impaired. Here, FIG. 5 is an exploded perspective view showing the packaging material 1 according to Modification 1 (in addition, the product 10 is shown by a two-dot chain line). FIG. 6 is a development view of the lower packaging member 2. FIG. 7 is a development view of the upper packaging member 4.

Hereinafter, the structure of the lower packaging member 2 and the upper packaging member 4 in this modification will be described with reference to FIGS.
First, the lower packaging member 2 of this modification is a box-shaped member made of corrugated cardboard whose upper surface is open as in the above-described embodiment, and the bottom surface portion on which the product 10 is placed directly or via a cushioning material or the like. 21 and a lower cylindrical portion 22 extending upward from the peripheral edge of the bottom surface portion 21. However, in the above-described embodiment, the second wall portion 24 and the fourth wall portion 26 are horizontally long rectangular portions extending so that the wall surface height increases from the near side end toward the far side end. In contrast, in the present modification, both the second wall portion 24 and the fourth wall portion 26 have a horizontally long rectangular shape, and the lower cylindrical portion 22 has an inclination A. , B are not provided. Thus, in this modification, the wall surface height of the lower cylinder part 22 is the same in the whole periphery. And the lower packaging member 2 of this modification is formed by bend | folding the corrugated board-shaped raw material 30 cut out to the predetermined | prescribed shape similarly to the above-mentioned embodiment. Further, a corrugated plate-like material is bent on the front side of the lower cylindrical portion 22 (more specifically, between the left end of the first wall portion 23 and the front end of the fourth wall portion 26). Thus, a seam portion 27 of the plate-like material 30 that always appears when the cylindrical portion is formed is provided.

  Next, the upper packaging member 4 of this modification is a box-shaped member made of corrugated cardboard whose bottom surface is open, as in the above-described embodiment, and the top surface portion where the top of the product 10 is in contact directly or via a cushioning material or the like. 41 and an upper cylindrical portion 42 that extends downward from the periphery of the top surface portion 41 and fits outside the lower cylindrical portion 22. However, in the above-described embodiment, all of the first to fourth wall portions 43 to 46 have a vertically long rectangular shape, and the wall surface height of the upper cylindrical portion 42 is the same in the entire circumference. In this modified example, the second wall portion 44 and the fourth wall portion 46 are vertically long rectangular portions extending so that the wall surface height increases from the front side end toward the back side end, Inclinations C and D are formed. As described above, in this modification, the lower peripheral edge of the upper cylindrical portion 42 is provided with the inclinations C and D by smoothly changing the wall surface height from the near side toward the far side. More specifically, the inclinations C and D are the upper cylindrical portion 42 on the back side (specifically, the back side portion of the second wall portion 44, the back side portions of the third wall portion 45 and the fourth wall portion 46). ) Lower peripheral edge of the upper cylindrical portion 42 (specifically, the first wall portion 43, the front side portion of the second wall portion 44, and the front side portion of the fourth wall portion 46) on the front side. Is provided to be higher. And the upper packaging member 4 is formed by bending the plate-shaped raw material 50 made from corrugated cardboard cut out to the predetermined | prescribed shape similarly to the above-mentioned embodiment. Further, a corrugated plate-like material is bent on the front side of the upper cylindrical portion 42 (more specifically, between the right side end of the first wall portion 43 and the front side end of the second wall portion 44). Thus, a seam portion 47 of the plate-like material 50 that always appears when forming the cylindrical portion is provided.

  As described above, the packaging material 1 of the present modification is a type of packaging material that covers the upper packaging member 4 having the upper cylindrical portion 42 that fits outside the lower cylindrical portion 22 of the lower packaging member 2 from above the lower packaging member 2. It has the characteristic that the inclination C and D are provided in the lower peripheral edge of the upper cylinder part 42. FIG. Then, when the product 10 is packaged using the packaging material 1, the inclinations C and D provided on the lower peripheral edge of the upper cylindrical part 42 are similar to the inclinations A and B in the above-described embodiment. The possibility that the lower peripheral edge is caught on the upper peripheral edge of the lower cylindrical portion 22 can be reduced. Thereby, by packaging the product 10 which is a packaged object using the packaging material 1 of this modification, the operation | work which covers the upper packaging member 4 from the upper direction of the lower packaging member 2 is performed like the above-mentioned embodiment. It is possible to obtain an effect that the workability at the time becomes difficult to be impaired.

(4) Modification 2
In the above-described embodiment and Modification 1, the lower cylindrical portion 22 is provided by providing the inclinations A and B on the upper peripheral edge of the lower cylindrical portion 22 or by providing the inclinations C and D on the lower peripheral edge of the upper cylindrical portion 42. The packaging material 1 is such that the workability at the time of performing the work of covering the upper packaging member 4 from the upper side of the lower packaging member 2 is made such that the upper cylindrical portion 42 can be gradually inserted from a part thereof to the whole. However, as shown in FIG. 8, the upper peripheral edge of the lower cylindrical portion 22 is provided with the same inclinations A and B as in the above-described embodiment (see FIGS. 1 and 2), and the upper cylindrical portion 42 You may make it provide the inclination C and D similar to the above-mentioned modification 1 in a lower periphery (refer FIG.5 and FIG.7).

  In this case, the packaging material 1 of this modification is a type of packaging material that covers the upper packaging member 4 having the upper cylindrical portion 42 that fits outside the lower cylindrical portion 22 of the lower packaging member 2 from above the lower packaging member 2. The lower cylindrical portion 22 is provided with the slopes A and B, and the upper cylindrical portion 42 is provided with the slopes C and D on the lower peripheral edge. When the product 10 is packaged by using the slopes A and B provided on the upper peripheral edge of the lower cylindrical portion 22 and the inclinations C and D provided on the lower peripheral edge of the upper cylindrical portion 42, the above-described embodiment and Like the first modification, the lower peripheral edge of the upper cylindrical portion 42 can be less likely to be caught by the upper peripheral edge of the lower cylindrical portion 22. Thereby, by packaging the product 10 which is a packaged object using the packaging material 1 of this modification, the operation | work which covers the upper packaging member 4 from the upper direction of the lower packaging member 2 is performed like the above-mentioned embodiment. It is possible to obtain an effect that the workability at the time becomes difficult to be impaired.

(5) Other Embodiments Although the embodiments of the present invention and the modifications thereof have been described with reference to the drawings, the specific configuration is not limited to these embodiments and does not depart from the gist of the invention. The range can be changed.

  If the present invention is used, workability when packaging an article to be packaged in a packaging material of a type in which an upper packaging member having an upper cylindrical portion that fits outside the lower cylindrical portion of the lower packaging member is covered from above the lower packaging member. It is possible to improve the efficiency of storing and transporting the articles to be packaged without damaging the package.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a packaging material according to an embodiment of the present invention (in addition, an article to be packaged is shown by a two-dot chain line). It is an expanded view of a lower packaging member. It is an expanded view of an upper packaging member. FIG. 3 is a cross-sectional view of a packaging material (in addition, an article to be packaged is indicated by a two-dot chain line). It is a disassembled perspective view which shows the packaging material concerning the modification 1 (in addition, a to-be-packaged object is illustrated with a dashed-two dotted line). It is an expanded view of a lower packaging member. It is an expanded view of an upper packaging member. It is a disassembled perspective view which shows the packaging material concerning the modification 2 (in addition, a to-be-packaged object is shown with the dashed-two dotted line).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging material 2 Lower packaging member 4 Upper packaging member 10 Packaged object 22 Lower cylinder part 27 Seam part 42 Upper cylinder part 47 Seam part A, B, D, E Inclination C Clearance

Claims (4)

A packaging material for packaging an article (10),
A lower cylindrical member (2) having a lower cylindrical portion (22) extending upward, on which the article to be packaged is placed;
It has an upper cylinder part (42) that extends downward and fits outside of the lower cylinder part, and can cover the lower packaging member with the upper cylinder part inserted from above into the lower cylinder part. An upper packaging member (4) made of corrugated cardboard,
Inclinations (A, B, D, E) are provided on the periphery of the lower cylinder part and / or the periphery of the upper cylinder part,
Packaging material (1).   The packaging material (1) according to claim 1, wherein a gap (C) between an outer surface of the lower cylindrical portion (22) and an inner surface of the upper cylindrical portion (42) is less than 10 mm.   The inclinations (A, B, D, E) are obtained when the package (10) in a state where the upper packaging member (4) is covered with the lower packaging member (2) when viewed from one side in the horizontal direction. The periphery of the lower cylinder part on the near side of the article to be packaged is lower than the periphery of the lower cylinder part (22) on the back side of the article to be packaged and / or The packaging material of Claim 1 or 2 provided so that the periphery of the said upper cylinder part in the near side of the said to-be-packaged object may become high compared with the periphery of the said upper cylinder part (42) in a back | inner side. (1). The upper packaging member (42) and the lower packaging member (22) are formed by bending a corrugated plate-shaped material cut into a predetermined shape,
The joint portion (47) of the plate-like material appearing in the upper cylindrical portion (42) and / or the joint portion (27) of the plate-like material appearing in the lower cylindrical portion (22) When the packaging object (10) in a state of covering the packaging member is viewed from one side in the horizontal direction, it is provided on the near side of the packaging object.
The packaging material (1) in any one of Claims 1-3.

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