JPH08151078A - Cushioning material for packing - Google Patents

Abstract

PURPOSE: To simply assemble and disassemble a cushioning material main body and a connection material without using an adhesive, to efficiently perform transport at the time of suply or recovery and to facilitate recycling. CONSTITUTION: A cushioning material 11 for packing supporting an article 12 to be packed in a packing box in a cushioned state consists of a pair of the block-shaped cushioning material main bodies 13 arranged in the packing box and the plate-shaped connection material 14 fitted to the cushioning material main bodies 13 at both ends thereof to connect both main bodies 13. The fitting recessed part 15 fitted to each of the corner parts of the article 12 to be packed is formed to the inside of each of the cushioning material main bodies 13 and the fitting groove 17 of the connection material 14 is formed to each of the cushioning material main bodies 13 so as to leave a thick-walled part 16 from the contact surface 13a thereof in the vicinity of the contact surface with the packing box and opened toward the fitting recessed part 15 by a notched recessed part 18 having a width dimension narrower than that of the connection material 14 and, further, the width dimension (b) of the fitting groove 17 is smaller than the thickness B, of the connection material and larger than 1/3 the thickness B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing cushioning material for safely cushioning and supporting an object to be packed in a packing box in order to protect the object to be packed from shocks during transportation.

[0002]

2. Description of the Related Art As a conventional cushioning material for packing of this type, a foamed resin molded body has been widely used.
In order to reduce the amount of resin used, a so-called corner block type is also used in which the resin is divided and arranged only at the four corners of the bottom and the top of the article to be packed.

The corner block type packing cushioning material is
Since the number of cushioning material main bodies used when packing the objects to be packed increases, the workability at the time of packing decreases. Therefore, in general, a plurality of cushioning material main bodies are attached to a fixing mount such as a corrugated board or a paperboard with an adhesive, an adhesive tape, or the like to be used for easy handling. FIG. 6 is an example of such a corner block type cushioning material for packing. This cushioning material for packing 1 includes a pair of cushioning material bodies 2 arranged at the corners of an article to be packed, and this cushioning material body 2. It is composed of a plate-shaped connecting member 3 that is connected at a predetermined interval. The cushioning material main body 2 is formed by molding foamed resin such as styrofoam into a block shape and is provided with a recessed portion into which an object to be packed can be fitted. The materials 3 are integrally assembled by adhering the materials 3 with an adhesive.

Since this type of cushioning material for packing has a small amount of resin used and is easy to handle, it is widely used as a cushioning material for packing home electric appliances or parts thereof. Are required to be reused or used as recycled resources in view of the difficulty of processing after use and resource saving, and the law (Act on Promotion of Utilization of Recycled Resources (Act No. 48 of 1991)
No. 13))) is also stipulated, and in order to promote the use of foamed resin molded products as recycled resources, there is also a provision that facilitates the separation of foamed resin molded products and dissimilar materials based on this law. Established (5th Ordinance of the Ministry of International Trade and Industry, 1991)
No. 5).

From such a point of view, also in the packing cushioning material as described above, the cushioning material body side, which is a foamed resin molded product, and the connecting material side molded with corrugated cardboard, etc. can be easily and at least the foamed resin molded product side. There is a strong demand for being able to separate without leaving any foreign matter on the surface. This is because if foreign matter is mixed in the foamed resin to be reused, the quality of the reused product will be deteriorated, and the quality will be deteriorated, and effective reuse of resources cannot be achieved.

[0006]

Therefore, considering the packing cushioning material of the type shown in FIG. 6, the packing cushioning material of this type requires a bonding step in a factory and therefore has a low productivity. Since the cost is high and the bonding is performed with an adhesive, the cushioning material main body 2 and the connecting material 3 after use
Is difficult to separate, and the other material or adhesive is likely to remain as foreign matter on the separated cushioning material body 2 or connecting material 3, making it difficult to reuse the foamed resin material. I can't answer.

[0007] In order to eliminate the inconvenience, the square mount 4
A packing cushioning material is proposed in which a notch is formed in a corner and a part of the cushioning material main body made of a foamed resin material is fitted into the notch (Japanese Utility Model Publication No. 58-26940). . Since this packing cushioning material does not use an adhesive for joining the mount and the cushioning material main body, it is easy to separate the mount and the cushioning material main body, and after the separation, the cushioning material main body made of the foamed resin does not have an adhesive or the like. It is satisfactory from the viewpoint of resource recycling since foreign substances do not coexist, but a part of the cushioning material body is simply inserted into the notch formed in the mount,
When packing the objects to be packed, the cushioning material main body easily rotates on the mount and its positioning is not easy, which makes the packing operation difficult and, in some cases, accidentally separating the two. Further, since the cushioning material main body has a partially thin fitting portion, it has a drawback that it is easily damaged.

As an improved cushioning material for packaging that eliminates such inconvenience, as shown in FIG. 7, cardboard or other cardboard is folded into a concave connecting member 3 and the upper surface 4 of the connecting member 3 is folded.
There has been proposed a cushioning material for packing in which the foamed plastic cushioning body 2 provided with the insert piece 7 is inserted and fitted at both ends of the hollow portion 6 constituted by the inner folding surface 5 (Japanese Utility Model Laid-Open No. 64-17987). Since the packing cushioning material 1 is integrally joined by frictional engagement in a state where a part of the cushioning body 2 is inserted and fitted in the hollow portion of the connecting material 3, there is a certain degree of accidental separation during packaging work. Although it can be avoided, it requires a step of precisely bending the connecting member 3 so that the insertion piece 7 of the cushioning body 2 can be reliably inserted, and thus there is a disadvantage in that its manufacturing is difficult. If the bending is inaccurate or if it is deformed by external force before insertion, there is a risk that the cushioning body cannot be inserted or the frictional force is insufficient and the cushioning body is easily separated.

An object of the present invention is to eliminate the above-mentioned various inconveniences of the conventional corner block type cushioning material for packing, and more specifically, a cushioning material main body serving as a corner block and The connecting material can be easily and reliably assembled without the use of an adhesive, and foreign substances can be easily disassembled at the time of collection without remaining foreign matter.Furthermore, transportation at the time of supply to the user and at the time of collection is efficient. The purpose of the present invention is to provide a cushioning material for packing that can be performed in a specific manner. Another object of the present invention is to provide a cushioning material for packing that meets the purpose of laws and regulations relating to promotion of utilization of recycled resources.

[0010]

DISCLOSURE OF THE INVENTION The present invention for solving the above problems is a cushioning material for cushioning and supporting an article to be packaged inside a packaging box, which is a pair of block-shaped members arranged in the packaging box. Of the cushioning material body and a plate-like coupling material that couples the pair of cushioning material bodies by fitting both ends to the cushioning material body, and a surface of the cushioning material body that does not contact the inner surface of the packaging box. On the one hand, a fitting recess for fitting with the article to be packed is formed, on the other hand, a fitting groove for the connecting material is formed from the contact surface of the cushioning material body with the packing box via a thick portion, It is characterized in that the fitting groove is opened to the fitting recess side by an internal cutout recess narrower than the width of the connecting member.

In the present invention, the thickness dimension which is the clearance of the fitting groove is thinner than the thickness of the plate-like connecting member and 1/3 thereof.
Being thicker is the preferred mode. In the present invention, convex portions are formed at both ends of the connecting member, and the tips of the convex portions are locked in the locking grooves formed at the positions where the fitting grooves are extended in the depths of the cutout recesses, It is a particularly preferable mode that the base end side of the convex portion is fitted into the fitting groove.

As the resin material constituting the buffer material main body in the present invention, a homopolymer of styrene or methylstyrene, and a polystyrene resin such as styrene-maleic anhydride, styrene-acrylonitrile, or styrene-methylmethacrylate copolymer, Homopolymer of ethylene or propylene, and polyolefin resin such as ethylene-propylene and ethylene-vinyl acetate copolymer, styrene modified resin obtained by polymerizing styrene monomer on the polyolefin resin, and polymethylmethacrylate. Resin,
Alternatively, other synthetic resin capable of forming expanded beads and having appropriate strength and cushioning when formed into expanded beads can be used. Further, as the members constituting the connecting member, corrugated board, paper board, paper material such as corrugated board and paper board treated with synthetic resin, board material such as veneer board,
A thin metal plate or the like can be preferably used.

[0013]

[Operation] In the packing cushioning material according to the present invention, the fitting material of the pair of cushioning material bodies is formed in the fitting groove (formed by the inner surface of the cutout recess side excluding the notch recess and the surface of the thick portion). By inserting both end portions from the lateral direction, the pair of cushioning material main bodies are connected by the connecting material and easily assembled as a cushioning material for packing. Both ends of the connecting material inserted into the fitting groove are not easily disengaged due to frictional resistance between the fitting material and the fitting groove of the cushioning material body. In addition, the thick portion interposed between the connecting member and the packaging box can absorb the shock. Further, since the fitting groove is opened to the fitting recess side by the notch recess, the internal space is increased and it is easy to remove from the mold.

Further, by making the end face in the lengthwise direction of the thick portion and the inner face of the cutout recess substantially flush with each other, it is possible to perform one-step molding of the cushioning material main body with the male and female dies. In addition, convex portions are formed on both ends of the connecting member, and the tips of the convex portions are locked in the locking grooves formed at the positions where the fitting groove is extended in the depths of the cutout concave portions, and the convex portions are formed. When the base end side of the connecting part is fitted in the fitting groove, the tip of the convex part of the connecting member is locked in the locking groove formed at the back of the notch recess, while the protruding part of the connecting member is projected. By fitting the base end side of the portion into the fitting groove, the connecting material is reliably connected to the packing cushioning material.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A packing cushioning material according to the present invention will now be described in more detail with reference to an embodiment with reference to the accompanying drawings. FIG.
1 to 5 show a cushioning material for packing showing an embodiment of the present invention, FIG. 1 shows an overview of the present embodiment, FIG. 2 is a view taken in the direction of arrow X in FIG. 1, and FIG. 1. FIG. 4 is a sectional view taken along the line ZZ of FIG.

The packing cushioning material 11 is provided at four corners of a packing box (not shown) as shown in the figure, and a cushioning material body 13 for cushioning and supporting the article 12 to be packed, and the cushioning material body 13 is packaged. It is composed of connecting members 14 which are connected at intervals so as to be located at the opposite corners of the box. The cushioning material main body 13 is molded by using a male and female mold by a usual molding method such as foaming bead molding, and the inner surface side that does not contact the packaging box,
That is, a fitting recess 15 that fits into a corner of the article to be packaged 12 is formed on the side in contact with the article to be packaged 12, and the thickness dimension a from one contact surface 13a of the four outer surfaces that comes into contact with the packaging box.
Fitting grooves 17 into which the connecting members 14 are fitted are formed with the thick portions 16 (see FIGS. 2 and 4) being separated from each other. The thickness a of the thick portion 16 is preferably set so as to have a cushioning effect capable of absorbing a shock from the packaging box side and a strength capable of supporting the article to be packaged 12 in the packaging box.

Further, the thickness dimension b which is the clearance of the fitting groove 17
(FIG. 2) is set to a dimension slightly smaller than the thickness dimension B (FIG. 4) of the connecting member 14. Preferably, the thickness B of the connecting member> the thickness b of the fitting groove 17 ≧ the thickness B of the connecting member B / 3. As a result, the frictional engagement between the connecting member 14 and the cushioning material main body 13 in the fitting groove 17 can be strengthened, and it is possible to avoid inadvertent separation between the two.
Further, in this embodiment, as shown in FIG. 2, the longitudinal direction of the fitting groove 17 is an opening 17 that is open to the outside of the cushioning material body 13.
a and 17a.

The longitudinal direction of the fitting groove 17 is set to the cushioning material main body 1
3, the width dimension c of the connecting member 14 is not opened outside.
The length dimension may be the same as or slightly smaller than, and the shape may be surrounded by the cushioning material body 13. In this case,
Although the multi-stage molding is required, the frictionally engaging surface is wide, so that the convex portion 14a of the coupling body 14 is not always necessary.

Further, the fitting groove 17 is opened on the inner surface side 17a toward the fitting recess 15 side by the notch recess 18.
The inner dimension d of the cutout recess 18 is set to be narrower than the width dimension c of the connecting member 14. As a result, both sides of the connecting material 14 are fitted between the inner surface 17 a of the fitting groove 17 excluding the cutout recess 18 and the thick portion 16. In this example, FIG.
As shown in FIG.
6a and the inner side surfaces 18a, 18a of the cutout recesses 18 are substantially the same surface, which enables the one-step molding of the cushioning material main body 13 with the male and female dies.

As shown in FIG. 5, the connecting member 14 is made of corrugated cardboard with a predetermined width c and length. In this embodiment, projections 14a are further provided on both ends of the connecting member 14, and the tips of the projections 14a are chamfered. The width of the convex portion 14a is the same as the inner diameter d of the cutout concave portion 18, but is preferably slightly wider. As a result, the frictional force between the inner side surfaces 18a, 18a of the cutout concave portion 18 and the side surface of the convex portion 14a increases, and the engagement between the two becomes strong.

Further, as shown in FIG. 4, the tip of the convex portion 14a is inserted into the engaging groove 21 having an opening formed in the notch concave portion 18 of the cushioning material body 13 and having an opening formed in parallel with the fitting groove 17. On the other hand, the base end side of the convex portion 14 a is fitted into the fitting groove 17. The stepped portion 14b of the convex portion 14a is the inner surface 17a of the fitting groove 17.
It functions as a stopper by abutting against. Further, since the locking groove 21 is opened to the outside of the cushioning material main body 13, the cushioning material main body 13 can be molded in one step with a male and female mold. The shape and thickness of the outer side surface of the cushioning material body 13 may be appropriately set in consideration of the support strength of the article to be packed, the cushioning effect, and the like.

As described above, the packing cushioning material 1 of this embodiment
1 is simply assembled by inserting both ends of the connecting member 14 into the fitting groove 17 of the cushioning material body 13 so that both ends of the connecting material 14 are fitted to the cushioning material body 13 and are simply assembled. The fitted cushioning material main body 13 does not easily come off due to the frictional resistance with the fitting groove 17. Then, the assembled cushioning material 11 is attached by fitting the fitting recessed portions 15 to the corners of the article to be packaged 12, and then is housed in the packaging box together with the article to be packaged 12. Packaged item 12
Are stored in the packing box, the cushioning material 11 for packing is interposed between the object to be packed 12 and the packing box with the outer four surfaces (including 13a) contacting the inner surface of the packing box, respectively. , The object to be packed 12 is placed inside the packing box from the inner surface of the box to the cushioning material main body 1
A space corresponding to the thickness of 3 is formed to provide buffer support.

The tip of the convex portion 14a of the connecting member 14 is engaged in the locking groove 21 formed in the recess of the cutout concave portion 18, while the base end side of the convex portion 14a of the connecting member 14 is the fitting groove 17. The connection member 14 is securely connected by the packing cushioning member 11 by being fitted to the. Also, when the packing cushioning material 11 is collected, it can be easily disassembled simply by pulling out the connecting material 14 from the cushioning material body 13, and the cushioning material body 11 of styrofoam can be easily recycled.

[0024]

According to the cushioning material for packaging of the present invention, both ends of the connecting material are laterally inserted into the fitting grooves of the cushioning material body without using an adhesive or the like, and easily separated by mutual frictional resistance. It is easy to assemble so that it can be easily disassembled by simply pulling out the connecting material from the cushioning material main body, so it is extremely easy to completely separate the foamed resin molded product and the dissimilar material, and foamed resin molding Since the product can be easily used as a recycling resource and the cushioning material main body is formed in a block shape, the material is efficiently taken and the amount of waste material is reduced, which is most suitable for global environment protection. Further, at the time of transportation, the cushioning material main body and the connecting material can be carried as separate bodies, so that the transportation efficiency is good. Occasionally, by molding so that the end face in the lengthwise direction of the thick portion and the inner surface of the cutout recess are substantially the same, it is possible to perform one-step molding with the male and female molds of the cushioning material main body, which reduces the processing cost. Can be reduced and production efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an overall outline of a cushioning material for packing according to an embodiment of the present invention.

FIG. 2 is a side view (viewed by an arrow X) of the cushioning material main body of FIG.

FIG. 3 is a front view (viewed from the arrow Y) of the cushioning material main body of FIG. 1.

FIG. 4 is a ZZ sectional view of FIG.

5 is a plan view of the connecting member of FIG. 1. FIG.

FIG. 6 is an overall perspective view of a conventional packing cushioning material.

FIG. 7 is an overall perspective view of another conventional cushioning material for packing.

[Explanation of symbols]

11 ... Buffer material for packing, 12 ... Object to be packed, 13 ... Buffer material main body, 13a ... Contact surface, 14 ... Connection material, 14a ... Convex part, 1
5 ... Fitting recess, 16 ... Thick portion, 17 ... Fitting groove, 18 ... Notched recess, 21 ... Locking groove

Claims (3)

[Claims] 1. A cushioning material for cushioning an object to be packaged in a packaging box, comprising a pair of block-shaped cushioning material bodies arranged in the packaging box, and both ends of the cushioning material body. A mating plate-like connecting member that connects the pair of cushioning material main bodies by being fitted together, and a fitting concave portion that fits to the object to be packed on the surface of the cushioning material main body that does not contact the inner surface of the packaging box. On the other hand, the fitting groove of the connecting member is formed from the contact surface of the cushioning material main body with the packaging box via the thick portion,
Further, the packing cushioning material is characterized in that the fitting groove is opened to the fitting recess side by an inner cutout recess narrower than the width of the connecting member. 2. The packing according to claim 1, wherein a thickness dimension which is a gap of the fitting groove is thinner than a thickness of the plate-like connecting member and thicker than 1/3 thereof. Cushioning material. 3. A convex portion is formed at both ends of the connecting member, and a tip of the convex portion is locked in a locking groove formed at a position where the fitting groove is extended inside the cutout concave portion. The packing cushioning material according to claim 1, wherein the base end side of the convex portion is fitted into the fitting groove.