JPH08151077A - Cushioning material for packing - Google Patents

Abstract

PURPOSE: To simply assemble a cushioning material main body and a connection material without using an adhesive and to simply disassemble them at the time of recovery. CONSTITUTION: A cushioning material 11 for packing consists of a pair of block-shaped cushioning material main bodies 13 arranged in a packing box and the plate-shaped connection material 14 connecting the cushioning material main bodies 13. A notched recessed part 17 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 on the side of the contact surface with the packing box of a fitting recessed part 15 and an engaging projection 16 is formed on the inner surface of the thick-walled part 16 and a fitting groove is formed along the inner surface 16a of the thick-walled part 16 on the side of the opening part 17a of the notched recessed part 17 and an engaging groove 17c is formed to the deep part of the notched recessed part 17. The protruding parts 14a fitted in the notched recessed parts 17 are formed to both end parts of the connection material 14 and the engaging holes engaged with the engaging projections 16b and the engaging parts engaged with the engaging grooves 17c are formed to the protruding parts 14a and the base end parts of the protruding parts 14a are fitted in the fitting grooves.

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 possibility that the packing cushioning material 1 is inadvertently separated during the packaging work to some extent. Although it can be avoided, it is still not sufficient, and there is a disadvantage that a manufacturing process is difficult because a step of precisely bending the connecting member 3 so that the insertion piece 7 of the buffer body 2 can be inserted is required. 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.

The present inventors have conducted research to obtain a new packing cushioning material that eliminates the inconvenience of the conventionally known packing cushioning material, and as shown in FIG. The front portion 93 and the back portion 94 are partially
A method for manufacturing a cushioning material 90 for packaging, in which a cushioning block 91 made of a foamed bead molded body (foamed resin molded body) integrally molded in a state of a is attached, is proposed. (Japanese Patent Application No. 5-137603). In the packing cushioning material 90 manufactured by this method, the support 92 and the cushioning pad 91 made of foamed resin are securely joined without using an adhesive agent, and there is no mutual displacement such as rotation. In addition, by breaking only the communication portion 92a after use, it is possible to easily separate the support body 92 and the cushion pad 91 without mixing foreign matter.

However, this method requires a mold having a complicated structure for manufacturing the cushioning material for packing, and a step of disposing the support plate in the cavity of the mold for each molding. In addition, since the entire packing cushioning material is integrally molded in the factory, a large transportation space is required when the packing cushioning material is transported from the factory to a packing work place for home electric appliances, which is a user of the packing cushioning material. Further, when this method is applied to the production of so-called corner block type packing cushioning material having cushioning materials only at four corners or two corners as shown in FIG. 6 or FIG. It gets more complicated.

An object of the present invention is to eliminate the above-mentioned various inconveniences of the corner block type cushioning material for packing. More specifically, more specifically, the cushioning material main body serving as the corner block is a normal one. It can be easily manufactured with a molding die, and the cushioning material main body and the connecting material can be easily and reliably assembled without using an adhesive, and easily disassembled without remaining foreign matter at the time of collection. It is an object of the present invention to provide a cushioning material for packaging that can be efficiently transported during supply to users and during collection. 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.

[0012]

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. Is formed with a fitting concave portion that fits into the object to be packed, and a notch concave portion is formed on the contact surface side of the fitting concave portion with the packaging box via a thick portion between the fitting concave portion and the contact surface. Further, an engagement protrusion is formed on the inner surface of the thick wall portion so as to project toward the cutout recess, a fitting groove is formed on the opening side of the cutout recess, and the engagement recess is formed in the back of the cutout recess. A groove is formed, and at both ends of the connecting member, convex portions that fit into the notched concave portions are formed, An engaging hole that engages with the engaging protrusion is formed in the convex portion of the, and a locking portion that locks in the locking groove is formed at the tip of the convex portion, and the base end of the convex portion is formed. The part side is fitted in 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.

[0014]

[Operation] According to the packaging cushioning material of the present invention, the coupling material is fitted into the cushioning material body by inserting the convex portion of the coupling material from the lateral direction along the inner surface of the thick portion formed in the cushioning material body. The fitting part is fitted into the fitting part, and the fitting part at the tip is fitted into the fitting groove while being fitted into the fitting groove, and the base end side of the convex part is fitted into the fitting groove of the fitting body. It As a result, the connecting material is securely fitted to the cushioning material main body at two locations, the engaging portion at the tip and the base end portion side of the convex portion, and the engaging projections protruding from the inner surface of the thick portion to the notch concave portion are connected. By engaging with the engaging hole of the convex portion of the material, it does not come off easily from the cushioning material main body.

As described above, the packing cushioning material can be easily assembled by simply inserting the connecting material into the cushioning material body from the lateral direction. Then, the impact can be absorbed by the thick portion interposed between the connecting member and the packaging box. Furthermore, the internal space is increased by opening the notch recess toward the fitting recess, and
When the end face in the lengthwise direction of the thick portion and the inner surface of the cutout recess are substantially flush with each other, one-step molding of the cushioning material main body with a male and female mold becomes possible.

[0016]

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 overall outline of the present embodiment, and FIG. 2 shows X of FIG.
3 is a view taken in the direction of arrow Y in FIG. 1, and FIG. 4 is a sectional view taken along line ZZ in FIG.

The cushioning material 11 for packing is provided at the four corners of a packaging 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 this cushioning material body. The connecting member 14 connects 13 to each other at intervals so as to be located at opposite corners of the packaging box. The cushioning material main body 13 is molded using a male and female mold by a normal molding method such as foaming bead molding, and the inner surface side that does not contact the packaging box, that is, the side that contacts the object to be packaged 12, is the object to be packaged. 12 is formed with a fitting recess 15 having a shape that fits into the corner of the housing 12.
A notched recess 17 is formed on the a side, leaving the thick portion 16. As a result, the inner surface portion 16a of the thick portion 16 (see FIG.
(See)) forms the wall surface of the cutout recess 17 and serves as the fitting surface of the connecting member 14. The thickness a of the thick portion 16 is
It is preferable to set it so as to have a cushioning effect capable of absorbing an impact from the side of the packaging box and a strength capable of supporting the article to be packaged 12 in the packaging box.

An engaging projection 16b is formed on the inner surface 16a of the thick portion so as to project toward the cutout recess 17 side. The engagement projection 16b is gradually returned from the opening 17a side of the cutout recess 17 toward the back to form a return (see FIG. 4). A shallow fitting groove 17b is formed along the inner surface 16a of the thick portion on the opening 17a side of the cutout recess 17. The width dimension b of the fitting groove 17b is preferably set to be equal to or slightly smaller than the thickness dimension of the connecting member 14. In this embodiment, the longitudinal direction of the fitting groove 17b is the cushioning material main body 13. Is open to the outside. The longitudinal direction of the fitting groove 17 is not opened to the outside of the cushioning material body 13 and has a length dimension that is the same as or slightly smaller than the width dimension c of the connecting material 14, and the periphery is surrounded by the cushioning material body 13. It may have a different shape.

Further, a locking groove 17c for locking a locking portion 14d of a convex portion 14a of the connecting member 14, which will be described later, is formed in the rear of the notched concave portion 17. The locking groove 17c has an opening formed in parallel with the fitting groove 17b and is opened to the outside of the cushioning material main body 13 in a direction perpendicular to the opening so that the locking groove 17c can be extracted from the mold. Further, the inner dimension d of the cutout recess 17 is set to be a width dimension narrower than the width dimension c of the connection member 14, so that both side portions of the connection member 14 are cutout recessed portion 1.
It is fitted between the inner surface 17d of the fitting groove except 7 and the thick portion 16. Further, in this embodiment, the notch recess 17 of the thick portion 16
The width dimension d of the inner wall surface of the
The fitting groove 17b is formed between the fitting groove inner surface 17d and the opening 17a.

As shown in FIG. 5, the connecting member 14 is made of corrugated cardboard having a predetermined width dimension c and a predetermined length, and the connecting member 14 is provided with convex portions 14a at both ends thereof. As shown in FIG. 5, the convex portion 14a is formed with an engaging hole 14b that engages with the engaging protrusion 16b of the thick portion 16 at approximately the center of the convex portion 14a. The base end side of the convex portion 14a is fitted into the fitting groove 17b at a predetermined depth, and the step portion 14 formed at the base end portion.
The c functions as a stopper when it abuts on the inner side of the fitting groove 17b. A locking portion 14d that locks in the locking groove 17c is formed at the tip of the convex portion 14a. In the illustrated example, the engaging portion 14d is narrower than the width of the convex portion 14a, but the engaging portion 14d has an engaging groove 17c.
The width of the locking portion 14d may be the same as the width of the convex portion 14a in order to make it easier to enter.

The shape and thickness of the outer side surface of the cushioning material main body 13 may be set appropriately in consideration of the support strength of the article to be packed and the cushioning effect. In this embodiment, the groove portion 18 is formed on the outer side surface of the cushioning material body 13, and the convex surface 19 formed on the surface other than the groove portion 18 contacts the inner surface of the box to enhance the cushioning effect. As described above, in the packing cushioning material 11 of the present embodiment, the convex portion 14a of the connecting material 14 is inserted into the notched concave portion 17 of the cushioning material main body 13, and the locking portion 14d of the convex portion 14a is further inserted into the notched concave portion 17. By engaging the engaging hole 14b of the convex portion 14a with the engaging protrusion 16b of the thick portion 16 while locking the engaging groove 17c of the convex portion 14a, the base end portion of the convex portion 14a fits into the cutout concave portion 17. The cushioning material body 1 is fitted in the groove 17b.
Both ends of the connecting member 14 are fitted into the connector 3 easily and reliably. That is, the cushioning material body 13 fitted to both ends of the connecting material 14
Is locked by the fitting groove 17 and the locking groove 17c of the cushioning material body 13, and is securely connected by the engagement of the engaging projection 16b and the engaging hole 14b, and is easily disengaged. There is no.

The assembled cushioning material 11 for packing
After being attached by fitting the fitting recessed portion 15 to the corner of the article to be packed 12, it is stored inside the packing box together with the article to be packed 12. When the article to be packed 12 is stored in the packing box, the cushioning material 11 for packing has four outer surfaces (including 13a).
12 to be packed in the state that each is in contact with the inner surface of the packaging box.
And the packing box, the object to be packed 12 is buffered and supported inside the packing box by forming a space from each inner surface of the box by the thickness of the cushioning material main body 13.

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 does not contain any foreign matter. It can be easily recovered. Further, since the notch recess 17 is opened to the fitting recess 15 side, when the cushioning material main body 13 is molded with a mold, it is possible to pull it out from the mold in one direction, which facilitates the molding. Further, as shown in FIG. 2, the longitudinal end surfaces 16 f, 16 f of the thick portion 16 and the inner face 17 of the cutout recess 17 are formed.
When f and 17f are substantially flush with each other, the cushioning material main body 13 can be molded by one-step molding with a male and female mold.

[0024]

EFFECTS OF THE INVENTION According to the cushioning material for packing of the present invention, it is possible to simply and easily separate the both ends of the connecting material into the fitting groove of the cushioning material body without using an adhesive or the like so as not to separate them easily. It is possible to assemble it to the other side, and the cushioning material body does not move due to rotation etc. after assembling, facilitating the packing work and easily disassembling it by simply pulling out the connecting material from the cushioning material body. Therefore, it is extremely easy to completely separate the foamed resin molded product and the dissimilar material, which makes it easy to use the foamed resin molded product as a recycling resource. It is ideal for protecting the global environment because it reduces the amount of waste materials. 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.

[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.

FIG. 8 is an overall perspective view of still 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
4b ... Engaging hole, 14d ... Locking part, 15 ... Fitting recess, 16
... Thick wall portion, 16a ... Thick wall portion inner surface, 16b ... Engagement protrusion, 1
Reference numeral 7 ... Fitting concave portion, 17a ... Opening portion, 17b ... Fitting groove, 17
c ... Locking groove

Claims (1)

[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. Further, a notch concave portion is formed on the contact surface side of the fitting concave portion with the packaging box via a thick portion with the contact surface, and a notch concave portion is formed on the inner surface of the thick portion. Side engaging protrusions are formed, a fitting groove is formed on the opening side of the cutout recess, a locking groove is formed in the back of the cutout recess, and both ends of the connecting member are formed. A convex portion that fits into the notched concave portion is formed, and an engaging hole that engages with the engaging protrusion is formed on the convex portion. And a locking portion that locks in the locking groove is formed at the tip of the convex portion, and the base end side of the convex portion fits in the fitting groove. Cushioning material.