JP3941909B2 - Paperboard cushion - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paperboard cushion.
[0002]
[Prior art]
Conventionally, shock absorbers made of foamed polystyrene have been used when packing and transporting not only electrical products but also various articles, etc., but environmental destruction due to the increase in foamed polystyrene as garbage has become a problem. As a result, the material used for the cushioning material has been changed from foamed polystyrene to paper, and the cushioning material made from paper is made of short fiber or fragmented paper material. Some are made of paper, cardboard or cardboard.
[0003]
For example, as shown in FIG. 10, the above-described shock absorber made of paperboard has a basic structure in which one side of the blank a is folded with the side plate b as a leg and stored in the outer box c. In the shape of the storage article d, a cut is made in a cross shape at a required portion of the top plate e on the side where the storage article d is put in and out, and each of the four tongue pieces f formed by the cut is bent. There is one in which the corresponding opening g is formed and the movement of the stored article d is suppressed by the bent tongues f so that the storage recess h having a depth in the inserting direction of the stored article is continuous with the opening g. .
[0004]
In addition to the above-described one blank, there is a buffer body composed of a plurality of blanks. As shown in FIG. 11, one main blank a becomes a basic skeleton of the buffer body by assembling, and the side plate b connected to the four sides of the top plate e is folded to form the buffer outer peripheral surface. The top plate e is provided with the opening g. And in another blank i, a plurality of side plates j that suppress the movement of the stored article d are shaped from the periphery of the bottom plate k, and this blank i is made to correspond to the opening g, The blank piece i is assembled to the opening g by pasting the margin piece l located at the end of each of the side plates j around the opening g, thereby forming a storage recess h continuous with the opening g.
[0005]
[Problems to be solved by the invention]
Among the cushions made of the above-mentioned paper material, the buffer body made of short fiber or fragmented paper material is liable to generate paper dust during use, etc. In addition to the disadvantage that it is not suitable for a shock absorber, the surface of the shock absorber itself is rough and the hue is gray, so that there is a problem that the appearance of the stored article is lowered. From this point of view, a shock absorber made of a paper material made of paper material such as corrugated cardboard or cardboard is often used, and as described above, a shock absorber made of paperboard having a storage recess formed by combining a plurality of blanks. The body is also being adopted.
[0006]
And, in the above-mentioned paperboard cushion, it is not efficient to assemble the blank from the blank when it is put in the outer box in combination with the stored article. Are also bonded together to form a three-dimensional object, and supplied as a paperboard cushion to the packing process of stored items. In addition, a large number of delivered paperboard cushions are stacked so as to gather together, and are provided in a shape that spreads out so that the stacked state becomes more stable. In other words, the lower end position of the side plate is positioned outward from the upper end position so that the paperboard cushion is trapezoidal when viewed from the side (see FIG. 12).
[0007]
By the way, in the above-mentioned paperboard cushion, as shown in FIG. 13, there is a space between the side plate b which is the outer peripheral surface of the buffer and the side plate j which forms the inner wall of the housing recess h. The side plate b is deformed and easily collapses toward the storage recess h. Therefore, there is an inconvenience that it is difficult to use as a buffer for a storage article having a certain weight, and improvement is desired. .
In other words, the storage article has a certain weight, and when the shock absorber is set in the storage article and stored in the outer box, it has a trapezoidal shape when viewed from the side as described above. The entire peripheral surface does not come into contact with the inner surface of the outer box, and the lower end of the side plate comes into contact with the inner surface of the outer box.
And if this outer box is handled like shaking in the normal range, and the load from the stored article acts to press this paperboard cushion against the inner surface of the outer box, The side plate b pressed against the inner surface falls toward the housing recess h (the folded side plate is indicated by a virtual line b). Accordingly, when a load is applied from the stored article side to press the outer peripheral surface of the buffer body against the inner surface of the outer box, there is a problem that the position of the stored article is not properly maintained in the outer box and is likely to rattle.
Therefore, the present invention has been made in consideration of the above problems, and even if a load that presses the paperboard shock absorber against the inner surface of the outer box from the stored article is applied to the paperboard shock absorber, the side plate does not fall down. An object of the present invention is to make it possible to stably support a stored article.
[0008]
[Means for Solving the Problems]
The present invention has been made in consideration of the above problems, cushion periphery defeat folding side plate concatenated around the top plate and having an opening corresponding to the stored articles to top plate with a gentle衝体top A sub-blank that forms a storage recess composed of a bottom plate and a side plate that rises around the bottom plate is assembled to the opening of the main blank that forms a surface, and is recessed in the back surface direction of the top plate. In the paperboard shock absorber in which the storage recess is located, a fall prevention means for supporting the side plate of the outer periphery of the shock absorber is disposed between the side plate of the outer periphery of the shock absorber and the side plate of the storage recess, thereby preventing the fall. The front end of the plate material continuous to the means is bonded to the peripheral back surface of the opening of the top plate, and a slit is made parallel between the bonded portion and the side of the top plate and close to the bonded portion. This is put Providing paperboard cushion, characterized in, is to solve the above problems.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on the embodiment shown in FIGS.
In the figure, reference numeral 1 denotes a paperboard cushion, which has a storage recess that is open from the top side and serves as an insertion slot. The storage article and a part of the storage article are inserted into the storage recess, and in this state, the outside is removed. By storing in a box or the like, the movement of the stored article during transportation is suppressed, and even if an external shock is applied to the outer box, the shock is transmitted to the stored article by absorbing the shock with this paperboard buffer. It's something to reduce.
The paperboard cushion 1 is composed of three blanks: a main blank A that forms the basic skeleton of the paperboard cushion 1 and two sub-blanks B and C that form storage recesses to be described later. By pressing in an overlapped state, the face plates of each of the three blanks are bent together and combined with each other, and the three blanks are bonded together at a required position as will be described later. It is united.
[0010]
As shown in FIG. 5, in the state before pressing, one sub-blank B is overlaid on the main blank A, and another sub-blank C is overlaid on the main blank A. Processing is performed. As shown in FIG. 3, the main blank A has a top plate 3 serving as a top surface of the paperboard cushion in the center, and a side plate 5 via a folding portion 4 on each side of the top plate 3. Are connected to each other, and each side plate 5 is folded from the folding portion 4 to form the outer peripheral surface of the paperboard cushion 1.
[0011]
In each of the side plates 5 positioned on the long side of the top plate 3, the glue margin piece 6 is connected to each side via the folding part 4, and in the state where the main blank A is assembled, this glue is used. The marginal piece 6 is bent from the folding portion 4 and bonded to the side plate 5 located on the short side of the top plate 3. Each of the side plates 5 serving as the outer peripheral surface of the paperboard shock absorber 1 has a lower end located slightly outward from the position of the folding portion 4 on the top plate 4 circumference, and the paperboard shock absorber 1 is viewed from the side. Sometimes the side plates 5 are inclined so that the side view shape is a trapezoid.
Further, in the main blank A, the four corners of the top plate 3 and the corners of the side plates 5 adjacent to the corners are notched, and the four corners of the top plate 3 are assembled in the assembled main blank A. Is formed with a cutout 7 that leads from the inside of the paperboard cushion 1 to the outside. When a plurality of paperboard cushions 1 are stacked as will be described later, the side plate 5 of the upper paperboard cushion 1 is attached. The lower end of the mating portion is positioned in the notch portion 7 of the lower paperboard shock absorber 1 so that the upper and lower paperboard shock absorbers 1 are not strongly engaged with each other.
[0012]
An opening 8 is formed at the center of the top plate 3 so that the whole or a part of the stored article can be inserted in accordance with the shape of the stored article. Has been. This adhesive 9 does not adhere in a normal state, and exhibits an adhesive force by applying the above-mentioned adhesive conditions such as pressure and heat at the time of press working. Corresponding portions to be described later of the sub-blank B overlapped on the peripheral upper surface are bonded together.
The adhesive 9 is also applied to the adhesive margin piece 6, and the adhesive margin piece 6 and the side plate 5 are assembled and overlapped at the time of pressing, and the adhesive 9 exhibits adhesive strength at the time of pressing. It is pasted together.
[0013]
One of the two sub-blanks B is assembled in the opening 8 of the main blank A, and has two cut-and-raised pieces 10 that can be folded up oppositely as shown in FIG. Two bottom plates 11, two side plates 12 formed in a substantially U shape so as to extend over the two bottom plates 11, and connected to the bottom plate 11 via the folding portion 4, and two bottom plates 11 and two side plates 13 connected to each other via the folding part 4.
As described above, the sub-blank B has four side plates 12 and 13 in four directions, and the side plates 12 and 13 are folded and raised in the opening 8 in the top plate 3 of the main blank A during the press working. Each of the adhesive margin pieces 14 inserted and connected to the end sides of the side plates 12, 13 via the folding portion 4 is bonded to the upper surface of the periphery of the opening 8 by the adhesive 9, whereby the opening 8 The sub-blank B is assembled and fixed to.
In the sub-blank B, when the side plates 12 and 13 are folded, the folded piece 10 is also folded in a Z shape. The side of the folded piece 10 is opened by punching, and the upper bottom forming opening 15 is made continuous by raising the folded piece 10. That is, each of the folded pieces 10 is formed by applying the part of the sub-blank C, which will be described later, to the two folded-up pieces 10 in a state where the sub-blank C is turned down from below and pressing the part of the sub-blank C in that state. Has been folded.
[0014]
In the paperboard cushion 1, as described above, the side plates 12 and 13 are folded into the opening 8 of the top plate 3 in the main blank A and the sub blank B is inserted, and the paste margin piece 14 on the sub blank B side is It is bonded around the opening 8. Further, in each of the top plate exposed portions 18 on the four sides of the bonding portion 16 formed by bonding the adhesive margin pieces 14, a die opening 20 for passing a rod that advances from the press die side when assembled is passed. Is provided.
[0015]
FIG. 4 shows the sub blank C assembled from the side opposite to the sub blank B with respect to the main blank A in a developed state. When the sub blank C is assembled by a required press device in a state where the three blanks B, A and C are stacked, the sub bottom C enters the upper bottom forming opening 15 of the sub blank B and faces the opening 8 side. The face plate 21 is arranged in the center. The folded piece 22 and the folded piece 10 are overlapped by the fall of the folded piece 22 connected to the opposite two sides of the upper bottom plate 21 via the folding portion 4, and the folded piece 10 is overlapped. The top end of the is overlapped with the upper bottom plate 21.
In this way, the sub blank C is attached to the sub blank B inserted in the opening 8 from the opposite direction, and the upper bottom plate 21 is located at the upper end of the upper bottom forming opening 15, and the folded piece 10 and In the state where the folded piece 22 overlaps, a storage recess 23 having a step in the depth in the insertion direction of the sub blank B from the opening 8 is formed.
[0016]
Each of the side plates 12 and 13 of the storage recess 23 formed as described above is slightly positioned with the lower ends of the side plates 12 and 13 positioned closer to the center of the storage recess 23 than the upper end position (the position of the folding portion 4). In this way, the inner peripheral shape of the storage recess 23 is formed in a tapered shape that opens upward. Further, each of the folded pieces 22 continuous with the upper bottom plate 21 is inclined so that the upper end thereof is located on the center side of the upper bottom plate 21 from the folding position of the tip. The overlapping folded pieces 10 are similarly inclined.
Thus, the storage space formed by the storage recess 23 has a shape opened upward, and when the storage recesses 23 of the two paperboard shock absorbers 1 are positioned vertically, the upper storage recess 23 is formed. The convex portion can enter the lower storage recess 23 through the opening 8. As described above, since the side plate 5 forming the outer peripheral surface of the paperboard cushion 1 is inclined and the outer peripheral surface is open at the bottom, the plurality of paperboard buffers 1 are aligned. When stacked, the upper and lower paperboard cushions 1 partly overlap each other, stabilizing the stacked state and reducing the space occupied by the stacked paperboard cushions.
[0017]
In the sub-blank C, as shown in the drawing, the folded piece 24 that is folded from each corner of the upper bottom plate 21 in the opposing direction of the piece 22 and the front end of the folded piece 24 are separable. And a separating face plate 25. And at the time of the brace processing accompanied by raising for each blank B, A, C, the folding piece 24 and the separation face plate 25 are separated, and the one folding piece 24 is folded up, Further, the front end portion 26 is bent and joined to the surface of the bonding portion 16 opposite to the adhesive margin piece 14, and even on the other separation face plate 25, both sides are placed so that the center is at the lower position. In addition to being folded, the front end portions 27 on both sides of the top plate 3 are bent and joined to a position along the folding portion 4 on the short side of the top plate 3. As shown in FIG. 7, the separation face plate 25 is located between the side face plate 5 and the side face plate 13 of the sub-blank B that are continuous via the short side folding portion 4 of the top face plate 3. A central portion of the plate 25 abuts against the side plate 5 and the side plate 13 to constitute a fall prevention means 28 that suppresses the fall of the side plate 5.
Further, overhanging pieces 29 are extended laterally at the base end portion of each of the raised pieces 24 to constitute a fall-preventing means 28, and the raised pieces 24 are set with the center position along the extending direction as a folding position. 8 and 9, the tip of the overhanging piece 29 in a state of being bent into a substantially L-shaped cross section is in contact with the side plate 5.
Since the tip of the protruding piece 29 is in contact with the side plate 5 in this way, the side plate 5 is supported by the protruding piece 29 even if a force that pushes the side plate 5 toward the storage recess is applied. 5 is prevented from falling. The overhanging piece 29 is also bent at a position along the overhanging direction as a folding position, so that the cross-sectional shape in a plane orthogonal to the direction of receiving the force of the side plate 5 becomes a substantially L shape, and therefore The strength of the piece 29 itself is increased, and the side plate 5 is surely supported without shaking.
[0018]
The sub-blank C includes a position where the tip of the folded piece 10 of the upper bottom plate 21 overlaps, a position where the tip of the folded piece 22 is folded on the back surface of the bottom plate 11, a tip portion 26 of the folded piece 24, and a separation. Adhesives 9 are previously applied to the front end portions 27 of the face plate 25, and the portions to which these adhesives 9 are applied are bonded to the facing portion during press working.
[0019]
Reference numeral 30 denotes a slit, which is placed close to the position where the tip portion 26 of the folded piece 24 is bonded and parallel to the longitudinal direction of the bonded portion 16.
The slit 30 plays a role of preventing the tip portion 26 from being displaced when the tip portion 26 is bonded to the peripheral back surface of the opening 8 during pressing. That is, the folded piece 24 is folded by a press die, and the tip end portion 26 is pressed against the peripheral back surface of the opening 8 while being applied to the press die. However, since the shape of the folded piece 24 is thin, there is a possibility that the tip end portion 26 is displaced when pressing with a press die.
Therefore, the distance from the folding portion 4 to the slit 30 is made slightly larger than the pressing width of the press die, and when the press die is pressed, a difference is caused in the thickness of the paperboard by the slit 30 so that the step portion 31 is formed. In this step, the movement X of the tip 26 (displacement toward the side plate 5 adjacent in the width direction of the folded piece 24) is stopped at the stepped portion so that the tip 26 is properly bonded (see FIG. FIG. 9). In FIG. 1, the bonding position of the tip 26 is shown as 26a.
[0020]
【The invention's effect】
As described above, according to the present invention, the cushion peripheral surface by tilting the folding side plate concatenated around the top plate and having an opening corresponding to the stored articles to top plate with a gentle衝体top A storage recess formed by assembling a secondary blank forming a storage recess composed of a bottom plate and a side plate standing around the bottom plate into the opening of the main blank to be formed, and being recessed in the opening toward the top plate back surface. In the paperboard shock absorber, the fall prevention means for supporting the side face plate of the shock absorber outer peripheral surface is arranged between the side face plate of the shock absorber outer peripheral face and the side face plate of the storage recess, and the fall prevention means The leading end of the continuous plate material is bonded to the peripheral back surface of the opening of the top plate, and a slit is made in parallel between the bonded portion and the side of the top plate and close to the bonded portion. Special that It is an.
As described above, since the fall prevention means for suppressing the fall of the side plate constituting the buffer body outer peripheral surface is provided, the side plate will not fall even if the buffer body is pressed against the inner surface of the outer box from the stored article side. Even in the case of a shock absorber made of paperboard in which the side plate is inclined and the lower surface is opened to facilitate stacking, the stored article can be stored without causing backlash of the stored article when the buffer is used. Further, the front end of the plate material continuous to the fall prevention means is bonded to the peripheral rear surface of the opening of the top plate, and is parallel between the bonded portion and the side of the top plate and close to the bonded portion. Since the slit is put in, when pressing with a press mold, a difference is caused in the thickness of the paperboard with the slit to form a stepped portion, and the movement of the tip portion is stopped at the stepped portion, An effect excellent in practicality can be obtained, for example, the tip part is appropriately bonded.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an example of a paperboard cushion according to the present invention.
FIG. 2 is an explanatory view showing a sub-blank in a developed state.
FIG. 3 is an explanatory view showing a main blank in a developed state.
FIG. 4 is an explanatory view showing another sub-blank in a developed state.
FIG. 5 is an explanatory diagram showing a state where three blanks are separated from each other.
FIG. 6 is an explanatory diagram showing three assembled blanks in a separated state.
FIG. 7 is an explanatory view showing a fall prevention means by a separating face plate.
FIG. 8 is an explanatory diagram showing a cross section along the short side direction of the top plate in one example.
FIG. 9 is an explanatory view showing a slit and a bonding portion in cross section.
FIG. 10 is an explanatory diagram showing a conventional example.
FIG. 11 is an explanatory view showing a conventional example.
FIG. 12 is an explanatory view showing a conventional example in which the side plate on the outer peripheral surface of the buffer body is inclined.
FIG. 13 is an explanatory view showing in cross section a conventional example in which a side plate on the outer peripheral surface of a buffer body is inclined.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Paperboard shock absorber 2 ... Storage article 3 ... Top plate 5 ... Side plate 8 ... Opening 10 ... Folding piece 11 ... Bottom plate 12, 13 ... Side plate 16 ... Laminate part 23 ... Storage recessed part 25 ... Separation side plate 28 ... Falling prevention means 29 ... Overhanging piece

Claims (1)

A bottom plate and the bottom plate are formed in the opening of the main blank which has an opening corresponding to the stored article in the top plate serving as the top surface of the shock absorber and folds the side plate connected to the periphery of the top plate to form the shock absorber outer peripheral surface. In the paperboard shock absorber in which a sub-blank that forms a storage recess composed of a side plate standing around the bottom plate is assembled, and the storage recess recessed in the back surface direction of the top plate is located in the opening, the buffer body outside the buffer body Between the side plate of the peripheral surface and the side plate of the storage recess, a fall prevention means for supporting the side plate of the outer peripheral surface of the shock absorber is arranged,
The front end of the plate material continuous to the fall-preventing means is bonded to the peripheral rear surface of the opening of the top plate, and is parallel between the bonded portion and the side of the top plate and close to the bonding portion. A paperboard cushion characterized by a slit .

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