JP2012246052A - Packing material, and package using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing material capable of protecting against an impact from beneath, packed articles stored in an upper-positioned packing tray positioned at upper level when the packing trays are stacked in a vertical direction.SOLUTION: The packing material 1 is configured to include the packing trays 10A and 20A with storage recesses 11 and 21 formed each for storing at least one part Pa of each of articles P to be packed, and then, pack the articles P to be packed by stacking the packing trays in the vertical direction. Among the stacked packing trays, the lower-positioned packing tray 20A includes a plurality of support parts 23 and 24 for supporting the circumference of respective storage recesses of the upper-positioned packing tray 10A from beneath. The support parts 23 and 24 on the lower-positioned packing tray 20A are formed such that, among four circumferential sides of the storage recess 11, at least one side located on the connection part Pb storing side is made in a non-support state with respect to at least one storage recess 11 formed on the upper-positioned packing tray 10A.

Description

  The present invention relates to a packing material including at least a pair of packing trays for packing an object to be packed such as parts, and in particular, these packing trays are stacked vertically to protect the object to be packed. It is related with a suitable packing material.

  Conventionally, articles to be packed such as parts of industrial machines, vehicle parts, or electronic parts are packed and transported using a plurality of packing trays as packing materials. Each packing tray is formed with a storage recess for storing a packaged object according to at least a part of the packaged object. Then, in a state where the articles to be packed are stored in the storage recesses of the packing tray, they are stacked in the vertical direction and conveyed as a package. In this way, a plurality of items to be packed can be conveyed at a time.

  When stacked in a state in which the objects to be packed are stored in the storage recesses of the packing tray constituting such a packing material, the lower packing tray positioned at the lower position is the upper packing tray positioned at the higher position. And the dead weight of the packaged goods accommodated in this acts. And when this weight and the vibration at the time of conveyance combine and a load acts locally on the lower packaging tray, there is a possibility that the lower packaging tray may be unexpectedly deformed at that location. .

  In view of such a point, for example, a packaging material formed on a support portion (stack portion) for supporting the load of the upper packaging tray has been proposed for the lower packaging tray (for example, Patent Document 1). reference). Specifically, the support portion is formed to support the periphery of the storage recess of the upper packaging tray. Thereby, the load of the article to be packed from the storage recess of the upper packaging tray can be distributed and received.

JP 2006-273333 A

  The packaging tray as described in Patent Document 1 described above is suitable for storing lightweight components such as electronic components. However, when a precision part or the like that is much heavier than an electronic part is used as an object to be packed, the load acting on the lower packaging tray is larger than that in the case of an electronic part. Thereby, the impact received from the bottom part of a package by vibration etc. at the time of conveyance is easy to be transmitted to the to-be-packaged object accommodated in the upper packaging tray directly from the lower packaging tray. As a result, there is a case where an object to be packed stored in the upper packing tray cannot be sufficiently protected.

  The present invention has been made in view of these points, and the object of the present invention is a case where packed items that are heavier than electronic components are stacked up and down by a packing tray. Another object of the present invention is to provide a packing material capable of protecting an object to be packed stored in an upper packing tray positioned at an upper level from an impact from below.

  In order to solve the above-mentioned problems, the inventor has intensively studied and as a result, when an impact from below is applied, the inventor deflects the impact energy by positively deflecting the upper packaging tray located at the upper position. It was considered that the object to be packed stored in the upper packing tray can be protected from the impact.

  As a result of further studies, the inventor supports the lower packaging tray that supports the upper packaging tray in order to cause the above-described upper packaging tray to bend flexibly upon impact from below. We obtained new knowledge that the position of the department is important.

  The present invention is based on the above-mentioned new knowledge of the inventor, and the packing material according to the present invention includes a pair of packed parts and a connecting part that connects the packed parts to each other. A packing tray formed with one or more storage recesses for storing at least one of the packed portions, and packing the packed items by stacking the packing trays in the vertical direction. Among the stacked packaging trays, the lower packaging tray located in the lower layer is formed with a plurality of support portions for supporting the upper packaging tray located in the upper layer, The support portion of the packing tray is at least one of the four sides around the storage recess with respect to the at least one storage recess formed in the upper packing tray. To become unsupported Made is characterized in that is.

  According to the present invention, an object to be packed can be stored by storing at least a part of the packed portion on one side in the storing recess of the packing tray and stacking the packing tray in the vertical direction. . At this time, since the lower packing tray is formed with a plurality of support portions that support the periphery of the storage recess of the upper packing tray from below, the upper packing tray and the lower packing tray are stored in this support portion. The load of the packaged item can be supported.

  And, since the plurality of support portions are formed so that at least one of the four portions around the storage recess of the upper packaging tray on the side where the connecting portion is stored is in an unsupported state, for example, When an impact is applied to the packing body packed with the packing material from below, a part of the unsupported upper packing tray may be bent by its own weight and absorb the impact from below. it can.

  In this way, even when the objects to be packed that are heavier than electronic components are stacked up and down by the packing tray, the objects to be packed (the objects to be stored in the upper packing tray positioned higher) The packing part) can be protected from impact from below.

  Thus, if at least one of the storage recesses formed in the upper packaging tray is in an unsupported state so that a part of the upper packaging tray is bent in order to protect the packaged portion from impact, the support portion The position of is not particularly limited.

  However, as a more preferable aspect, the support portion is formed such that a position of the upper packaging tray in the support state is a corner portion of the upper packaging tray.

  According to this aspect, the corner side is more easily bent than the center side of the upper packaging tray. Then, by placing the corner side of the upper packaging tray in an unsupported state with respect to the lower packaging tray, the impact acting on the article to be packaged (packaged portion) stored in the upper packaging tray is increased. It can be reliably absorbed by the bending of the packing tray.

  In this way, the lower packaging tray can stably support the upper packaging tray, and further, a part of the lower packaging tray is not supported with respect to the upper packaging tray so that the shock can be absorbed. If it can be made, the shape of the plurality of support portions is not particularly limited.

  However, as a more preferred aspect, at least one of the support portions is formed with a locking recess for locking to the upper packaging tray, and at least one lock forming the locking recess is formed. The side wall surface is formed so as to face the opposite side with respect to the position where the unsupported state is achieved.

  According to this aspect, in the lower packaging tray, the locking recess for locking to the upper packaging tray is formed in the support portion formed at the position where the lower packaging tray is in a supported state. The upper packaging tray can be locked to prevent both from being displaced.

  Further, since at least one locking side wall surface forming the locking recess is formed to face the opposite side with respect to the position where the locking recess is not supported, the unsupported portion of the upper packaging tray Since this is bent and sinks, and even if a moment acts on the upper packing tray around this part, this locking side wall surface is locked so as not to rotate with respect to the upper packing tray. It is possible to suppress the upper packaging tray from being lifted by a moment.

  Moreover, although the connection part may be a rigid body, the following aspect is preferable when this connection part has flexibility. That is, the storage recess formed in the upper packaging tray is formed so that the portion for storing the packed portion receives the packed portion at a position higher than the portion for storing a part of the connecting portion. Yes.

  According to this aspect, since the portion for storing the packed portion receives the packed portion at a position higher than the connecting portion receiving recess, even if the connecting portion is bent in the packed state, a part of the connecting portion It is difficult for the load of the connecting portion to act on the portion for storing. Thus, when the impact from below does not act, the bending of the non-contact portion of the upper packaging tray is suppressed, and at the time of impact, this portion is bent to absorb the impact acting on the packaged portion. Can do.

  Thus, a package can be obtained by storing the object to be packed in the storage recess of the above-described packing tray and stacking the packing tray.

  According to the present invention, even if the objects to be packed that are heavier than electronic components are stacked up and down by the packing tray, the objects to be stored in the upper packing tray positioned at the upper level It can protect against impact from below.

The typical perspective view of the packing material when the tray for packing which concerns on 1st Embodiment of this invention is stacked. The expansion perspective view of the tray for packing shown in FIG. It is sectional drawing when packing a to-be-packaged object in the tray for packing shown in FIG. 2, (a) is AA arrow sectional drawing of FIG. 2, (b) BB arrow of FIG. Sectional drawing. The partial typical perspective view when the tray for packing which concerns on 2nd Embodiment of this invention is used as the stacking packing material. The partial schematic perspective view of the packing material which stacked the tray for packing which concerns on 3rd Embodiment of this invention. FIG. 6 is a cross-sectional view when an object to be packed is packed in the packing tray shown in FIG. 5, (a) is a cross-sectional view taken along line CC in FIG. 5, and (b) is taken along line DD in FIG. 5. Sectional drawing. It is a schematic diagram of the upper packaging tray which concerns on 4th Embodiment of this invention, (a) is a typical perspective view of an upper packaging tray, (b) is a schematic which shows the state which packed the to-be-packaged item. Perspective view. The partial typical perspective view when the tray for packing which concerns on 5th Embodiment of this invention is used as the stacking packing material.

Below, based on drawing, some embodiment of the packing material provided with the tray for packing which concerns on this invention is described.
[First Embodiment]
FIG. 1 is a schematic perspective view of a packaging material when the packaging trays according to the first embodiment of the present invention are stacked, and FIG. 2 is an enlarged perspective view of the packaging tray shown in FIG. 3 is a cross-sectional view of an object to be packed in the packing tray shown in FIG. 2, wherein (a) is a cross-sectional view taken along line AA in FIG. 2, and (b) B- in FIG. It is B line arrow sectional drawing.

  In FIG. 1, two different types of packing trays 10A and 20A are stacked in the vertical direction, but these are alternately stacked in the vertical direction. Here, as an example, The two stages are shown. Therefore, 10A shown in FIG. 1 is hereinafter referred to as an upper packaging tray, and 20A is referred to as a lower packaging tray. This is defined as such for the sake of convenience, and is uniquely defined as an upper packaging tray. And does not determine the subordinate.

  As shown in FIGS. 1 to 3, the packing trays 10 </ b> A and 20 </ b> A constituting the packing material 1 according to the first embodiment are trays for storing the articles to be packed P. In the present embodiment, the packed object P to be packed is a packed object having a pair of packed parts Pa and Pa and a connecting part Pb that connects the packed parts Pa and Pa.

  Here, the packing trays 10A and 20A are formed by integrally molding a sheet-like thermoplastic resin, for example, by a thermoforming means such as vacuum forming. Examples of the material include polyolefin resins such as polypropylene (PP) and polyethylene (PE), polystyrene (PS) resins such as impact-resistant polystyrene (HiPS), or polyester resins such as polyethylene terephthalate (PET). The material is not particularly limited as long as it is a resin that can be thermoformed.

  Here, the structure of the packing trays 10A and 20A will be described below. As described above, the packaging trays 10A and 20A shown in FIG. 1 each include a pair of the upper packaging tray 10A and the lower packaging tray 20A. In the present embodiment, the pair of upper packaging trays 10A have the same shape, and the pair of lower packaging trays 20A have the same shape.

  For convenience of the following description, the pair of upper packaging trays 10A and the pair of lower packaging trays 20A are arranged in the direction in which the pair of upper (lower) packaging trays 10A (20A) are arranged with the opposite edge sides inside. The non-opposing edge side is the outside.

  As shown in FIG. 2, the upper packaging tray 10 </ b> A is formed with two storage recesses 11 for storing a part to be packed Pa and a part of the connecting part Pb of the object P to be packed. Each storage recess 11 includes a first storage recess 11a that stores the portion to be packed Pa, and a second storage recess 11b that stores a part of the connecting portion Pb. The first and second storage recesses 11b, 11b is connected. The upper packaging tray 10A is formed with receiving portions 15A and 16A for receiving respective support portions of a lower packaging tray 20A described later.

  On the other hand, the lower packing tray 20A is also formed with two storage recesses 21 for storing a part to be packed Pa and a part of the connecting part Pb of the packed object P, similarly to the upper packing tray 10A. Each storage recess 21 includes a first storage recess 21a that stores the portion to be packed Pa, and a second storage recess 21b that stores a part of the connecting portion Pb. The first and second storage recesses 21b, 21b is connected.

  Further, in the lower packaging tray 20A positioned at the lower position, a central support portion 23A and a pair of corner support portions 24A and 24A for supporting the upper packing tray 10A positioned at the upper position are formed at substantially the same height. These support portions 23A, 24A, 24A are formed so as to support the storage recesses 11, 11 of the upper packaging tray 10A located at the upper position from below.

  More specifically, as shown in FIG. 2, the center support portion 23A is formed to project upward between the two second storage recesses 21b and 21b (the center inside the lower packaging tray 20A). Yes. The pair of corner support portions 24A and 24A are formed at the outer corners of the pair of lower packaging trays 20A among the four corners of the lower packaging tray 20A. At the inner corner of the lower packaging tray 20A, lower wall portions 22A, 22A lower than the height of the central support portion 23A and the pair of corner support portions 24A, 24A are formed so as not to support the upper packaging tray 10A. Has been.

  Thereby, the position p1 in which the upper packaging tray 10A is supported is located at the inner center and outer corners of the upper packaging tray 10A, and the position p2 in which the upper packaging tray 10A is in the unsupported state is A central support portion 23A and a pair of corner support portions 24A and 24A are formed so as to be located at both the outer center and inner corners of the packaging tray 10A. As a result, the central support portion 23A and the corner support portion 24A of the lower packaging tray 20A are on the side (inner side) of the four sides around each storage recess 11 formed on the upper packaging tray 10A (inner side). ) (Corner portion) and one outside (center) are in an unsupported state.

  Below, the effect | action of the packaging material 1 which concerns on this embodiment is demonstrated. When the upper packaging tray 10A and the lower packaging tray 20A are stacked vertically, the central support portion 23A of the lower packaging tray 20A receives the bottom surface of the receiving portion 15A of the upper packaging tray 10A, and The support portions 24A and 24A receive the bottom surfaces of the receiving portions 16A and 16A of the upper packaging tray 10A. As a result, the upper packaging tray 10A is in a supported state at the inner center of the upper packaging tray 10A and the inner corners are unsupported with respect to the lower packaging tray 20A.

  In this way, the upper and lower packing trays 10A and 20A have the storage recesses 11 and 21 to store a pair of packed portions Pa and a part of the connecting portion Pb connected thereto, and for upper and lower packing. The objects to be packed P can be stored by stacking the trays 10A and 20A alternately in the vertical direction. At this time, the lower packing tray 20A is formed with a central support portion 23A for supporting the upper packing tray 10A and a pair of corner support portions 24A, 24A. And the load of the to-be-packaged goods P accommodated therein can be supported by the lower packaging tray 20A.

  And since it will be formed so that one side (corner part) of an inner side among the four sides around each storage recessed part 11 may be in an unsupported state, for example, it is below a packing object packed with packing material 1 When an impact is applied, a part of the upper packaging tray 10A in the unsupported state is deflected by its own weight of the portion to be packed Pa, and the impact from below can be absorbed.

  In this way, even in the case where the objects to be packed P that are heavier than electronic components or the like are stacked up and down by the upper and lower packing trays 10A and 20A, the upper packing tray 10A positioned at the upper position. The stored packaged object P (packaged part Pa) can be protected from an impact from below.

  In particular, in the present embodiment, the inner corner portion is more easily bent than the inner center portion of the upper packaging tray 10A, and therefore, the corner portion side of the upper packaging tray 10A is placed on the lower packaging tray 20A. By setting the unsupported state, the impact of the article to be packed P (packaging portion Pa) stored in the upper packaging tray 10A can be reliably absorbed by the bending of the upper packaging tray 10A.

  Although not shown in FIG. 1, the lower packaging tray 20A is further stacked above the upper packaging tray 10A, and the upper packaging tray 10A is further stacked below the lower packaging tray 20A.

  In the upper packaging tray 10A, the central support portion 13A and the pair of corner support portions 14A and 14A are formed at substantially the same height as the lower packaging tray 20A. The central support portion 13A is formed to protrude upward between the two second storage recesses 11b (inner side) (inner center of the pair of upper packing trays 10A). On the other hand, the pair of corner support portions 14A and 14A are formed so as to protrude upward at the corners outside the upper packaging tray 10A among the four corners of the upper packaging tray 10A. Similarly to the upper packaging tray 10A, a pair of low wall portions 12A, 12A lower than the height of the center support portion 13A and the pair of corner support portions 14A, 14A are formed at the inner corner portions.

  The lower packaging tray 20A is formed with receiving portions 25A and 26A for receiving the respective supporting portions of the upper packaging tray 10A positioned at the lower level when stacked. As a result, the lower packaging tray 20A disposed on the upper packaging tray 10A is on the side (inside) where the connecting portion 11b is accommodated among the four sides around the accommodation recess 21 by each corner support portion 14A. Both corners are in an unsupported state.

  In this way, the article P to be packaged stored in the lower packaging tray 20A stacked above the upper packaging tray 10A is also subjected to an impact from below, as described above. Can also absorb the shock.

[Second Embodiment]
FIG. 4 is a partial schematic perspective view when the packaging tray according to the second embodiment of the present invention is stacked and packed. The difference between the packaging tray according to the second embodiment and the packaging tray of the first embodiment is the position of the support portion. Therefore, members and portions having the same functions as those of the first embodiment are changed from “A” at the end of the reference symbol to “B”, and a detailed description thereof is partially omitted.

  As shown in FIG. 4, the upper and lower packaging trays 10B and 20B according to the present embodiment are packaging trays for storing the same packed object P as the packed object shown in the first embodiment, It is set as a package in the state which packed this to-be-packaged object P.

  In the present embodiment, the lower packing tray 20B is formed with a plurality of support portions 23B, 24B, and 24B that support the upper packing tray 10B positioned at the upper level at substantially the same height. More specifically, the support portions 23B and 24B are formed of the central support portion 23B formed at the center outside the pair of lower packing trays 20B and the lower packing tray 20B among the four corners of the lower packing tray 20B. It consists of a pair of corner support parts 24B and 24B formed at the inner corners. That is, in the present embodiment, the central support portion 23B, between the corner support portions 24B and 24B, and the corners on the outer side of the pair of lower packing trays 20B so as not to support the upper packing tray 10B, And low wall part 22B, 22B lower than the height of a pair of corner support part 24B, 24B is formed.

  Similarly to the lower packaging tray 20B, the upper packaging tray 10B has a central support portion 13B formed on the center side outside the upper packaging tray 10B, and a pair of corner support portions 14B and 14B are arranged in the upper packaging. It is formed at the inner corner of the tray 10B. That is, one of the sides (inner side) (center) on which the connecting portion Pb is accommodated out of the four sides around each accommodation recess formed in the upper packaging tray 10B is in an unsupported state.

  In this way, since the center inside the pair of upper and lower packing trays 10B and 20B stacked alternately in the vertical direction is in an unsupported state, this portion (tray central portion) is easily bent. By this bending, it is possible to absorb the impact acting on the packaged item.

[Third Embodiment]
FIG. 5 is a partial schematic perspective view of a packing material in which packing trays according to a third embodiment of the present invention are stacked, and FIG. 6 packs an object to be packed in the packing tray shown in FIG. FIG. 6A is a cross-sectional view taken along line CC in FIG. 5, and FIG. 5B is a cross-sectional view taken along line DD in FIG. 5.

  The packaging tray according to the third embodiment is different from the packaging tray of the first embodiment in that a locking portion is provided in each support portion. Therefore, members and portions having the same functions as those of the first embodiment are changed from “A” at the end of the reference symbol to “C”, and a detailed description thereof is partially omitted.

  As shown in FIGS. 5 and 6A, 6B, a locking recess 27 is formed at the upper end of the central support portion 23C of the lower packaging tray 20C according to the present embodiment. In addition, locking recesses 28 and 28 are formed in upper corners of the pair of corner support portions 24C and 24C (outer corners of the lower packaging tray 20C), respectively.

  Specifically, the respective locking recesses 27 and 28 are formed by side walls such as bottom surfaces 27a and 28a for receiving the upper packaging tray 10C and locking side wall surfaces 27b and 28b for locking the upper packaging tray 10C. The Then, the locking side wall surface 27b formed in the locking recess 27 of the center support portion 23C is formed so as to face the position p2 in the non-supporting state (to face the opposite side). (See FIG. 6 (a)). On the other hand, the locking side wall surface 28b formed in the locking recess 28 of the corner support portion 24C is formed so as to face the position p2 that is in the unsupported state (toward the opposite side) ( (Refer FIG.6 (b)).

  As shown in FIG. 5, the upper packaging tray 10 </ b> C has a latch receiving portion 15 </ b> C that latches in the latch recess 27 of the center support portion 23 </ b> C and a pair of corner support portions 24 </ b> C and 24 </ b> C when stacked. An engagement receiving portion 16 </ b> C that engages with the recess 28 is formed.

  As described above, in the lower packaging tray 20C, the center support portion 23C formed at the position p1 in the support state and the pair of corner support portions 24C are respectively engaged with the upper packaging tray 10C. Since the recesses 27 and 28 are formed, they are locked to the lock receiving portions 15C and 16C. In this way, the lower packaging tray 20C is locked to the upper packaging tray 10C, and it is possible to prevent both from being displaced.

  Furthermore, the locking side wall surfaces 27b and 28b constituting the locking recesses 27 and 28 are formed so as to face the position p2 that is in the unsupported state (toward the opposite side). Even if a portion of the packing tray 10C at the position p2 in the unsupported state bends and sinks, and a moment acts on the upper packing tray 10C around this portion, each locking sidewall surface 27b, Since 28 is locked to the upper packaging tray 10C, the upper packaging tray 10C can be prevented from being lifted by a moment.

  Similarly to the lower packaging tray 20C, the upper packaging tray 10C is also provided with a locking recess 17 in which a locking side wall surface 17b is formed so as to face the opposite side with respect to the position p2 in the unsupported state. May be. Thereby, even if the lower packaging tray 20C is stacked above the upper packaging tray 10C, similarly, the packaging state of the lower packaging tray 10C can be stabilized against an impact.

[Fourth Embodiment]
FIGS. 7A and 7B are schematic views of the upper packaging tray according to the fourth embodiment of the present invention. FIG. 7A is a schematic perspective view of the upper packaging tray, and FIG. It is a typical perspective view which shows a state. The packaging tray according to the fourth embodiment is different from the packaging tray of the first embodiment in the structure of the material of the connecting portion of the objects to be packed and the storage recess of each packing tray. Therefore, members and portions having the same functions as those of the first embodiment are changed from “A” at the end of the reference symbol to “D”, and a detailed description thereof is partially omitted.

  As shown in FIGS. 7A and 7B, the connecting portion Pb ′ of the packaged object P ′ according to the present embodiment is made of a flexible material made of resin or rubber. The packing material which concerns on packs the to-be-packaged goods P 'which has such connection part Pb'.

  Specifically, a bottom raised portion 11c is formed in the first storage recess 11a that stores the portion to be packed of the upper packaging tray 10D, and thus the first storage recess 11a is connected to the connecting portion. It is formed so as to receive the portion to be packed Pa at a position higher than the second storage recess 11b for storing a part. Although not shown, the lower packaging tray has a similar raised portion 11c.

  Thus, since the first storage recess 11a receives the portion to be packed at a position higher than the second storage recess 11b, even if the connecting portion Pb ′ is bent as shown in FIG. It is difficult for the load of the connecting portion Pb ′ to act on the second storage recess 11b. Thereby, when the impact from below does not act, the bending of the non-contact state portion of the upper packaging tray 10D is suppressed, and at the time of impact, this portion is deflected to absorb the impact acting on the packed portion. it can.

[Fifth Embodiment]
FIG. 8 is a partial schematic perspective view when the packaging tray according to the fifth embodiment of the present invention is used as a stacked packaging material. The packaging tray according to the fifth embodiment differs from the packaging tray of the first embodiment in the position of the support portion and the shape of the storage recess. Therefore, members and portions having the same functions as those in the first embodiment are changed from “A” at the end of the reference symbol to “E”, and a detailed description thereof is partially omitted.

  As shown in FIG. 8, the lower packaging tray 20E according to the present embodiment is further formed with a corner support portion 24E ′ at one of the inner corners as compared to the first embodiment. A central support portion 23E ′ is further formed at the outer center. These support portions 23E 'and 24E' have the same height as the other support portions 14E and 13E. Similarly, a corner support portion 14E 'and a center support portion 13E' are formed in the upper packaging tray 10E.

  Further, the upper packing tray 10E is formed with a partition portion 19 that partitions the storage recesses 11E and 11F, and the lower packing tray 10E is similarly formed with a partition portion 19 that partitions the storage recesses 21E and 21F. Has been.

  In this way, of the two storage recesses 11E and 11F of the upper packaging tray 10E, three of the four sides around the storage recess 11E are in a supported state, and the side (inside) where the connecting portion Pb is stored. One (center) is in an unsupported state. Further, the four sides around the remaining storage recess 11F are in a supported state. Therefore, in such a case, it is possible to absorb an impact on the article to be packed stored in the storage recess 11E, and the same applies to the case of the lower packing tray 20E.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed.

  In 1st-4th embodiment, each shape of a pair of upper packaging tray was the same, and each shape of a pair of lower packaging tray was the same. This is because the pair of packing parts constituting the packaged item have the same shape, and these may be different shapes, and the shape of the storage recess of each packing tray can be selected according to this shape. That's fine. Moreover, it is good also considering only the to-be-packed part of this at least one side (side which wants to absorb an impact) as a packing material using the packaging tray of any one of the 1st-4th embodiment. Further, each of the first to fourth packing trays has two storage recesses so as to store two objects to be packed. However, the number of the trays is limited to this number as long as the impact can be absorbed. Is not to be done.

  In the first to fourth embodiments, only the stacked state of the packaging trays has been described. However, it is a matter of course that the stacked products may be further accommodated in a housing or the like to form a package. That's it.

  1: packing material, 10A to 10E: upper packaging tray, 11, 11E, 11F: storage recess, 11a: first storage recess, 11b: second storage recess, 11c: bottom raised portion, 12A, 12B: low wall Part, 13A to 13E: center support part, 14A to 14E: corner support part, 15: receiving part, 15C: locking receiving part, 16: receiving part, 16C: locking receiving part, 17: locking recess, 17a: Bottom surface, 17b: Locking side wall surface, 19: Partition, 20A, 20B, 20C: Lower packaging tray, 21: Storage recess, 21a: First storage recess, 21b: Second storage recess, 22A, 22B: Low wall portion, 23A, 23B, 23C: center support portion, 24A, 24B, 24C: corner support portion, 25, 26: receiving portion, 27: locking recess, 27a: bottom surface, 27b: locking side wall surface, 28: Locking recess, 28a: bottom surface, 28b: engagement The side wall surface, 29: partition portion, P, P ': object to be packed, Pa: the packed section, Pb: connecting portion, p1: the support state position, p2: position where the unsupported

Claims (5)

For packing in which one or more storage recesses for storing at least one of the packed parts are formed among the packed objects having a pair of packed parts and a connecting part that connects the packed parts. A packing material for packing the article to be packed by stacking the packing tray in the vertical direction, comprising a tray;
Among the stacked packaging trays, the lower packaging tray located at the lower side is formed with a plurality of support portions that support the surroundings of the storage recesses of the upper packaging tray located at the upper level from below. ,
The supporting portion of the lower packaging tray is located on the side where the connecting portion is accommodated among the four sides around the storage recess with respect to at least one storage recess formed in the upper packaging tray. A packaging material, wherein at least one is formed so as to be in an unsupported state.   The packing material according to claim 1, wherein the support portion is formed such that a position of the upper packing tray in the unsupported state is a corner portion of the upper packing tray.   The at least one supporting portion is formed with a locking recess for locking to the upper packaging tray, and at least one locking side wall surface forming the locking recess is in the unsupported state. The packing material according to claim 1, wherein the packing material is formed so as to face the opposite side with respect to the position to be.   The connecting portion has flexibility, and the storage recess formed in the upper packaging tray is such that the portion for storing the packed portion is higher than the portion for storing a part of the connecting portion. The packing material according to claim 1, wherein the packing material is formed so as to receive the portion to be packed.   The package body packed with the packing material in any one of Claims 1-4.

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