JP4780747B2 - 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. 11, the above-described shock absorber made of paperboard has a basic structure in which one side of the blank a is bent 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. A corresponding opening g is formed and the movement of the storage article d is suppressed by the bent tongues f so that the storage recess h having a depth in the storage article insertion direction 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. 12 and FIG. 13, one main blank a becomes a basic skeleton of the buffer body by assembling, and the side plates b connected to the four sides of the top plate e are folded down and adjacent to each other. A buffer body outer peripheral surface inclined in a flared shape is formed by bonding the side plates b together, and the opening g is provided in the top plate e. 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 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, whereby the bottom plate is recessed in the opening g toward the back surface of the top plate. The storage recessed part h provided with the recessed inner peripheral surface inclined so that the k side becomes narrow was formed.
[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]
Further, in the above-mentioned paperboard cushion, since it is not efficient to assemble the blank from the blank when it is stored in the outer box in combination with the stored article, the side plates adjacent to the outer peripheral surface of the buffer are erected in advance. Are also bonded together to form a three-dimensional object, and supplied as a paperboard cushion to the packing process of stored items.
By the way, it is easy to handle a large number of paperboard cushions used in a packaging line, etc., and it is necessary to keep the space occupied by many bufferers small. Makes stacking possible. That is, as described above, the outer peripheral surface of the buffer body is inclined so as to spread toward the bottom, and the inner peripheral surface of the concave portion of the storage recess is inclined toward the bottom plate side, so that the area around the storage recess under the top plate is reduced. The top plate side of the lower buffer body is placed in the space, so that the stacked state of the buffer body is stabilized.
[0007]
However, in the paperboard shock absorber having the above structure, the two side plates are bonded to each other at positions corresponding to the four corners of the top plate. The three side plates with the side plates are gathered in a continuous state to partially increase the rigidity. Therefore, even if an impact that causes movement of the top plate in the diagonal direction is applied to the packaging body using this paperboard cushion, the corner portion has high rigidity, so the product supported by the paperboard cushion. There is a problem that the impact is easily transmitted directly and the function as a buffer is not performed.
Therefore, the present invention has been made in consideration of the above problems, and it is an object of the present invention to prevent the rigidity of the corner portion of the paperboard shock absorber from increasing even when the side plates are bonded to each other. It is an object of the present invention to make it possible to absorb the impact at the corner portion of the paperboard shock absorber even if an impact input in the diagonal direction of the top panel is applied to the used packaging body from the outside.
[0008]
[Means for Solving the Problems]
The present invention has been made in consideration of the above problems, and has an opening corresponding to a stored article on a top plate serving as a top surface of a shock absorber, and the side plates around the top plate are folded down so that adjacent side plates are attached to each other. In addition, a sub-blank that forms a storage recess composed of a bottom plate and a side plate around the bottom plate is assembled to the opening of the main blank that forms the buffer outer peripheral surface. In the paperboard cushion in which the recessed storage recess is located,
The corner of the outer peripheral surface of the shock absorber can be deformed by cutting out the four corners of the top plate of the main blank and the corner of the side plate adjacent to the corner of the top plate ,
The paperboard , wherein the bonding portion of the side plate at the corner portion where the outer peripheral surface of the buffer body can be deformed and the top plate are separated from each other with the opening portion formed of the notch therebetween. A buffer body is provided 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 the side plates 5 are folded from the folding portion 4 to form the outer peripheral surface of the paperboard shock absorber 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 which are the outer peripheral surfaces of the paperboard shock absorber 1 has a lower end located slightly outward from the position of the folding portion 4 of the top plate 4 so that the outer peripheral surface 7 of the shock absorber is inclined in a flared manner. Is provided.
[0012]
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. In addition, a notch 3a is formed from the inside of the paperboard cushion 1 to the outside. In this way, the notch 3a is opened at each corner of the top plate, and the end of each side plate 5 and the corner of the top plate 3 are not continuous. Can be deformed without being constrained by the top plate 3, and the top portion of the buffer body outer peripheral surface 7 can be deformed . A corner portion of the face plate 3 and a bonded portion of the side plate 5 by the adhesive piece 6 are separated with an opening formed by the notch portion 3a therebetween . As shown in FIG. Even if an impact X that is input in a diagonal direction on the top plate is applied to a package using 1 or the like, the corner portion 7a is deformed and absorbs the impact, and this paperboard cushion This will prevent the shock from being transmitted to the products it supports.
[0013]
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.
[0014]
One of the two sub-blanks B is assembled from above into the opening 8 of the main blank A, and has a cut-and-raised piece 10 that can be folded up facing each other 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, It consists of two side plates 13 which are located in the opposing direction of the bottom plate 11 and are connected 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.
[0015]
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.
[0016]
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. The sub-blank C is an upper base that enters the upper bottom forming opening 15 of the sub-blank B and faces the opening 8 when the three blanks B, A, and C are assembled with a required pressing device. 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.
[0017]
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 shape of the inner peripheral surface 19 of the recess 23 of the storage recess 23 is formed so as to be narrower from the opening 8 toward the bottom plate 11 side. 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. Since the side plate 5 forming the outer peripheral surface of the paperboard cushion 1 is inclined and the shape of the buffer outer peripheral surface 7 is open at the bottom as described above, a plurality of paperboard buffers are provided. When the bodies 1 are aligned and stacked, the top board 3 side of the lower paperboard cushion 1 is placed in the space below the top board 3 so that the stacking state is stabilized and a plurality of stacked paperboard cushions are stacked. The space occupied by is made small.
[0018]
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. Then, the separation face plate 25 is separated from the folded piece 24 at the time of the brace process accompanied by the raising of each blank B, A, C. The folded piece 24 is folded, and the distal end portion 26 of the folded piece 24 is bent and joined to the surface of the bonding portion 16 opposite to the paste margin piece 14, and is attached to the other separation face plate 25. Even if it exists, while both sides are folded up so that a center may become a lower position, each front-end | tip part 27 of the both sides is joined to the position along the short side folding part 4 of the top plate 3 while being bent.
As shown in FIG. 8, 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 folding part 4 on the short side of the top face plate 3. A central portion of the face plate 25 is in contact with the side plate 5 and the side plate 13 to constitute a fall prevention means 28 for suppressing the fall of the side plate 5.
[0019]
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. 9 and 10, the tip of the protruding 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.
[0020]
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 4, 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. In FIG. 1, the bonding position of the tip 26 is shown as 26a.
[0021]
【The invention's effect】
As described above, according to the present invention, the top plate serving as the top surface of the shock absorber has an opening corresponding to the stored article, and the side plates around the top plate are folded down and the adjacent side plates are bonded together. A sub-blank that forms a storage recess composed of a bottom plate and a side plate around the bottom plate is assembled to the opening of the main blank that forms the outer peripheral surface of the buffer body, and the opening is recessed in the back surface direction of the top plate. In the paperboard shock absorber in which the storage recess is located, the corners of the outer peripheral surface of the shock absorber are deformable by cutting out the four corners of the top plate of the main blank.
As a result, the corners of the outer periphery of the shock absorber can be deformed without being constrained by the top plate, and if the package using the shock absorber made of this paperboard is handled, it is input in the diagonal direction on the top plate. Even if such an impact is applied, the corner portion is deformed and absorbs the impact, so that the impact is transmitted to the product supported by the paper board cushioning body, and the function as a cushioning body is sufficiently achieved. It has an effect that is excellent in practicality.
[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 the other 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 blanks that have been assembled and raised in a separated state.
FIG. 7 is an explanatory view showing a deformation of a corner portion of the outer peripheral surface of the buffer body.
FIG. 8 is an explanatory view showing a fall prevention means.
FIG. 9 is an explanatory view showing a cross section along the short side direction of the top plate.
FIG. 10 is an explanatory view showing a bonded portion in cross section.
FIG. 11 is an explanatory diagram showing a conventional example.
FIG. 12 is an explanatory view showing a conventional example in which 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 the outer peripheral surface of the buffer body is inclined.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Paperboard buffer body 2 ... Storage article 3 ... Top plate 3a ... Notch part 5 ... Side plate 7 ... Buffer body outer peripheral surface 7a ... Corner | angular part 8 ... Opening 23 ... Storage recessed part

Claims (1)

The opening of the main blank that has an opening corresponding to the stored article on the top plate that becomes the top surface of the buffer body and that folds the side plates around the top plate and bonds the adjacent side plates together to form the outer peripheral surface of the buffer body And a sub-blank for forming a storage recess composed of a bottom plate and a side plate surrounding the bottom plate, and the storage recess that is recessed toward the back surface of the top plate is positioned in the opening. In
The corner of the outer peripheral surface of the shock absorber can be deformed by cutting out the four corners of the top plate of the main blank and the corner of the side plate adjacent to the corner of the top plate ,
The paperboard , wherein the bonding portion of the side plate at the corner portion where the outer peripheral surface of the buffer body can be deformed and the top plate are separated from each other with the opening portion formed of the notch therebetween. Made of shock absorber.

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