JP2955534B2 - Paper cushion - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material for protecting a packaged article which is extremely sensitive to shocks and vibrations of electric appliances and precision equipment, and more particularly to a cushioning board assembled from a paper board such as cardboard. The present invention relates to an assembling-type paper buffer that is housed in a packing box (also referred to as a decorative box) together with an article and protects the packed article from impact, vibration, and the like.

[0002]

2. Description of the Related Art Conventionally, a resin buffer made of urethane foam or styrofoam has been used as a buffer for protecting a package which is extremely sensitive to shocks, vibrations, etc., and is stored in a packing box together with the package. The packaged articles are protected from vibrations, shocks, and the like during transportation and during transportation. These resin buffers are excellent in the strength against the stacking load during storage and in the buffering properties for absorbing and relaxing the shock or vibration during stacking or transportation, but have a concern about the adverse effect on the environment, etc. There are difficulties in the treatment, and in recent years there has been an increase in the tendency to protect the global environment, and it is difficult to recycle, etc., so that their use is being restricted.

In recent years, as an alternative to such a resin buffer, a so-called pulp mold made by reducing recycled waste paper into a predetermined shape by press molding or the like, or a corrugated cardboard or waste paper is used. There have been proposed shock absorbers having various structural forms, such as being wound in a multilayer or laminated shape and formed into an angle shape or a corner shape having an L-shaped or V-shaped cross section by press molding or the like. However, since pulp molds can be produced by press molding or the like, they can be produced relatively inexpensively when mass-produced, but they pose a problem in terms of cost when produced in small quantities. That is, there is a problem that productivity cannot be obtained in consideration of the cost required for manufacturing a mold and the like. On the other hand, a cushion made of corrugated cardboard, waste paper, or the like is relatively inexpensive even in small-quantity production, but can be stored and set in a predetermined length after press molding, for example, in a corner portion of a packing box for storing packing articles. When cutting to length,
Because it is made by compressing waste paper, paper dust is emitted. Since it is placed in the packaging box for the purpose of protecting the corners of the packaged goods, it takes time and effort to stick it in the packaging box that receives the corners of the packaged goods,
There was a problem in handling.

Therefore, as a buffer for solving the above-mentioned various problems, a paper board material such as corrugated cardboard is folded and attached in a substantially rectangular parallelepiped shape, and has a recess for fitting a packaged article. In addition, there has been proposed a paper buffer having an inner / outer double wall structure having a buffer space for protecting a packaged article from impact, vibration, and the like on the peripheral wall portion thereof (for example, Japanese Patent Application Laid-Open No. HEI 6-1994).
−32373).

[0005]

However, in this paper cushion, the buffer space formed in the peripheral wall of the fitting recess for fitting the whole surface including the four corners of the packaged article is formed all around. Since the communication structure is continuous, the cushioning space of the peripheral wall portion can exert its buffering function in lightly packed articles, but the cushioning space of the peripheral wall portion in the case of heavy loaded articles has the weight of the packaged article. There is a risk of crushing, and there is a limit on the weight of the packaged article. That is, there is a problem that the strength against the weight of the packaged article is inferior to that of the above-mentioned buffer made of resin, pulp mold, or buffer made of corrugated cardboard or waste paper. In order to increase the strength of the paper buffer against the weight of the packaged article, a reinforcing member made of corrugated cardboard or the like formed in a size adapted to the buffer space is provided inside the buffer space of the peripheral wall. Although it is conceivable that the buffer space is crushed by the weight of the packaged article, the reinforcing body must be processed and manufactured separately from the paper buffer body, so that it takes time and extra corrugated paper. Will be needed. In other words, labor is uneconomical. In addition, since it is necessary to incorporate the reinforcing member into the buffer space during the process of assembling the paper buffer, there is a possibility that a new problem that the workability of assembling the paper buffer becomes troublesome.

Further, an inner wall plate is connected to each side of a central plate for assembling the above-mentioned conventional paper buffer into a substantially rectangular parallelepiped through a fold line, and a side plate is connected to the inner wall plate through a fold line. A first blank having an intermediate plate connected to the side plate via a fold line, an intermediate plate around a central space having substantially the same shape as the central plate, and an outer wall provided on the intermediate plate through a fold line. Since the second blanks formed by connecting the plates are formed by stamping the respective paper board materials by pressing or the like, there is much waste of materials. In particular, in the case of the first blank shown in FIG. 4 of the publication, the inner wall plate, the side plate, and the intermediate plate are sequentially cut from each side of the center plate into a substantially cross shape.
Therefore, there is a lot of waste in the related art in which there is a die-cut residue having no use value around the first blank punched. This waste is the same in the second blank.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional situation, and an object thereof is to form a substantially rectangular parallelepiped shape by bending a board made of paper in a required manner and to fit a packaged recess into which a packaged article is fitted. In a paper buffer having an inner and outer double wall structure having a peripheral buffer space, the peripheral wall has a buffer function for protecting the packaged articles from impact, vibration, etc., as well as the weight of the packaged articles. It is also excellent in strength, and a reinforcing structure for strength can be included in the construction during a series of assembling work, and furthermore, the generation of paper cutting materials is minimized by minimizing the generation of die-cut debris. It is to provide a buffer.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a paper box material, which is assembled into a substantially rectangular parallelepiped shape by a required bending and has a fitting recess for fitting a packaged article, and a peripheral wall portion thereof. Is a paper cushion having an inner and outer double wall structure having a peripheral buffer space, a central plate having a substantially square shape, an outer wall plate rising from each side of the central plate through a folding line, and an outer wall plate. An upper edge plate that bends inward through a fold line, an inner wall plate that bends downward from the upper edge plate through a fold line to form the peripheral buffer space between the outer wall plate, and an inner wall plate. A bottom wall plate that bends inward through a fold line to form a bottom buffer space of the fitting recess between at least the central plate and the bottom wall. Then, the central plate is divided from the central plate by two cuts provided at the rising folding line of the outer wall plate of one of the peripheral wall portions rising from the opposite sides thereof, and cuts provided on the central plate so as to be continuous with the two cuts. A plurality of first support portions are provided in parallel with each other and bent from the center plate into a substantially concave shape via a fold line. This first support portion
A support piece that is bent up from the central plate via a fold line across one peripheral wall at the space width of the bottom buffer space and supports the bottom of the fitting recess, and one from both sides of the support piece. A projecting piece projecting in the space width of the peripheral buffer space of the peripheral wall portion and being bent in a space direction through a folding line from a required portion so as to protrude into the peripheral buffer space. Furthermore, the inner wall plate and the bottom wall plate are defined on both side portions of the one peripheral wall portion by cuts provided inside the both side portions, and are protruded inside the buffering space of the other peripheral wall portion with a substantially L-shaped cross section. A second support portion; The second support portion includes an upper piece having a space width of a buffer space around the other peripheral wall, and an inner piece that is bent downward from the upper piece via a fold line. . According to such a technical means, the first support portions provided in parallel with the center plate are bent up from the center plate and the protruding pieces are bent as required. Next, the outer wall plate, the upper edge plate, and the inner wall plate that constitute one of the opposed peripheral wall portions are sequentially bent, and finally the bottom wall plate is bent inward to support the bottom wall plate on the first support portion. Fold it up so that it rests on one side. Accordingly, one of the peripheral walls of the fitting concave portion for fitting the packaged article is provided, and the protruding piece of the first support portion is protruded in the surrounding buffer space, and the first support portion is provided. The supporting piece is provided inside the bottom buffer space on the bottom rear surface of the fitting recess with the bottom supported. Also, by completing the assembly of one of the peripheral walls,
On both sides of the peripheral wall portion, a second support portion having a substantially L-shaped cross section, which is separated from an inner wall plate and a bottom wall plate and has an upper side and an inner side bent downward from the upper side, is bent. It is formed. Next, an outer wall plate forming the other opposing peripheral wall portion,
The upper edge plate and the inner wall plate are sequentially bent, and finally the bottom wall plate is bent inward, and the bottom wall plate is folded so as to be placed on the previously folded bottom wall plate. Is completed. With this, the other peripheral wall portion of the fitting concave portion is provided, and the second peripheral wall portion is provided in the surrounding buffer space.
A support is protrudingly embedded.

[0009] Of the first support portions provided in parallel on the center plate, adjacent first support portions are formed as a set, and the support piece portion of each of the first support portions formed as a set is formed with a double protruding piece. A continuous piece that is bent along the bottom back surface of the fitting concave portion from between the portions via a folding line, and the continuous piece and the bent portions of the two projecting pieces are bent in opposite directions and overlapped with each other. That is, the first support portions forming a pair are successively provided in a substantially pedestal shape. According to such a technical means, the protrusion of the first support portion, which is continuously provided in a substantially gantry-like shape by a bent portion, is provided in a buffer space around one of the peripheral walls of the fitting concave portion assembled by the above-described assembling procedure. The piece is protruded inside, and the bottom is supported by the supporting piece continuously provided by the connecting piece. Thereby, the surrounding buffer space of one of the peripheral wall portions facing the fitting recess and the buffer space at the bottom thereof are held by the reinforced structure that is further strengthened.

In addition, an outer wall plate, an upper edge plate, an inner wall plate, and a bottom portion of the central plate, which are provided continuously from two opposite sides of the central plate to constitute one peripheral wall of the fitting concave portion. A main body portion having a bottom wall plate and a bottom wall plate is formed from a single piece of paper plate material, while an outer wall plate, an upper edge plate, an inner wall plate and the same recess portion forming the other peripheral wall portion of the fitting concave portion are formed. The two side plate portions provided with the bottom wall plate forming the bottom portion of the center plate are cut out from one piece of paper board material, cut and separated, and the both side plate portions are attached to the opposite sides of the central plate, respectively. It is formed so that it can be connected continuously. According to such a technical means, the main body portion and the both-side plate portions can be stamped and formed from a single sheet of paper material according to their respective sizes and shapes. That is,
An outer wall plate, an upper edge plate, an inner wall plate, and a bottom wall that form a bottom portion of the concave portion by continuously connecting the two sides on one side including the center plate to form a peripheral wall portion on one side of the fitting concave portion. And an outer wall plate, an upper edge plate, an inner wall plate, and an outer wall plate which are adhered and connected to both sides on the other side of the central plate to form a peripheral wall portion on the other side of the fitting recess. The both side plate portions provided with the bottom wall plate forming the bottom portion of the concave portion have a substantially square shape with a small amount of useless irregularities around. Thus, by using a single sheet of paper made in accordance with the size and shape of each of the main body portion and the both side plate portions, it is possible to perform die-cutting without producing unnecessary die-cut residues.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded view showing an example of the paper buffer of the present invention. Reference numeral 2 denotes a fitting recess for fitting all the side surfaces of a packaged article housed in an illustrated packing box for an electric product, a precision instrument, or the like. The peripheral wall part 1-1 and the bottom part 1-2 on one side opposite to each other
The main body 3 for assembling and assembling the whole is a side plate on both sides for assembling and constructing the peripheral wall portion 1-10 on the other side of the fitting recess 1 opposite to the fitting recess 1. A peripheral wall portion 1-1 having the fitting concave portion 1 and forming an inner / outer double wall structure;
A substantially rectangular parallelepiped paper buffer body A having peripheral buffer spaces 4 and 5 in 1-10 and a bottom buffer space 6 on the back surface of the bottom 1-2 is formed so as to be assembled and constructed (FIG. 6).

The main body 2 is formed by die-cutting from a single sheet of paper made of corrugated cardboard or the like, and has a suitable size corresponding to the size of the fitting recess 1 and its opening shape. A central plate 2-1 having a shape, and an outer wall plate 2-2 which is connected to two opposite long sides of the central plate 2-1 through the folding line 7 and is bent and raised. Exterior wall board 2-
The upper edge plate which is connected to 2 via the folding line 8 and is bent inward
An inner wall plate 2-4 connected to the upper edge plate 2-3 via a fold line 9 and bent downward to form a surrounding buffer space 4 between the outer wall plate 2-2; The inner wall plate 2-4 is connected to the inner plate 2-4 via a fold line 10 and is bent inward so as to be parallel to the central plate 2-1 so as to be bent between the central plate 2-1 and the inner surface of the packing box. It has a bottom buffer space 6 for the recess 1 and a bottom wall plate 2-5 for the bottom 1-2 of the recess 1 (see the development in FIG. 1).

The central plate 2-1 is provided with two cuts 11 provided in the folding line 7 on both long sides thereof and a cut 12 provided in the central plate 1-1 so as to be continuous with the two cuts 11. -1 and a plurality of first support portions 13 which are bent up from the central plate 2-1 in a substantially concave shape and stand up.

The first support portion 13 is paired with a first support portion 14 to be described later, which is die-formed in the same shape on both side plate portions 3, and is attached and connected to the first support portion 14. By being assembled and constructed in a substantially pedestal shape (see FIG. 3), the buffer space 4 around the long side peripheral wall portion 1-1 of the fitting recess 1 and the fitting recess 1 are formed.
The bottom plate 1-2 serves to reinforce and hold the bottom buffer space 6 on the back surface so as not to be crushed by the weight of the packaged article, etc. A notch 11 of an appropriate length is provided along the fold line 7 on both long sides from the inside portion on both short sides facing each other. And the central plate
A notch 12 is provided in the central plate 2-1 so as to connect one end of both notches 11 located on both short sides of the notch 2-1. Two cuts shorter than the cut length
By providing 15, it is provided on the central plate 2-1 so that the other ends of the cuts 11 are continuously provided between the peripheral walls 1-1 on both long sides in the space width of the bottom buffer space 6. The support piece 13-1 is bent from the folded line 16 and rises to support the bottom 1-2 of the fitting recess 1, and the peripheral wall 1-
A projecting piece 13-2 projecting in the space width of the surrounding buffer space 4 and being bent in the space direction via a fold line 17 as required to project inside the surrounding buffer space 4; Between the piece portions 13-2, the projecting piece portion 13-2 is partitioned by a cut 15 and connected to the supporting piece portion 13-2 at a fold line 18 to form a bent portion 13- of the both projecting piece portions 13-2. 20 and a continuous piece 13-3 bent in the same direction. That is, the center plate
The support piece 14-1 is bent from the fold line 16 with 2-1 to stand up,
Then, the middle part of both protruding pieces 13-2 is horizontally bent from the fold line 17, and the continuous piece 13-3 is further bent with the support piece 13-1.
It is formed so as to form a substantially concave shape by bending horizontally from 18 (see FIG. 9).

The inner wall plate 2-4 and the bottom wall plate 2-5 are formed on both sides of the inner wall plate 2-4 and the bottom wall plate 2-5 of the main body 2 by notches 19 provided inside the both side portions. And a second support portion 20 that is bent and configured to have a substantially L-shaped cross section.

The second support portion 20 includes an outer wall plate 2-2, an upper edge plate 2-3.
, The inner wall plate 2-4 is sequentially bent, and finally the bottom wall plate 2-5 is bent so that the long side peripheral wall portion 1-1 and the bottom portion of the fitting recess 1 are long.
1-2 is bent and formed into a substantially L-shaped cross section in the process of assembling and assembling, and protrudes into the buffer space 5 around the short side peripheral wall portion 1-10 of the fitting concave portion 1 to be assembled and assembled later. It serves to strengthen and hold the surrounding buffer space 5 so as not to be crushed by the weight of the packaged article, etc., and straddle the folding line 10 between the inner wall plate 2-3 and the bottom wall plate 2-4. Cut so as to be connected to the upper edge plate 2-3, the inner wall plate 2-4, and the fold line 9.
An upper piece 20-1 is provided on the back surface of an after-mentioned upper edge plate 3-2 of the short side peripheral wall portion 1-10 of the fitting concave portion 1 so as to overlap with the upper edge plate 3-2. The upper piece 20-1 and the inner piece 20-2 that bends downward from the fold line 21 are bent into a substantially L-shaped cross section.

Then, the fitting recess 1 is attached to the main body 2 and attached to both short sides of the center plate 1-1.
The two side plate portions 3 constituting the short side peripheral wall portion 1-10 are cut and separated from one sheet of paper board material made of corrugated paper or the like at the same time (see FIG. 2). The same shape as the above-mentioned first support portion 13 of the central plate 1-1 is cut from one short side of the cut side, that is, the support piece portion 14-1, the both protruding piece portions.
14-2, a connecting piece 14-3 is provided, and the supporting piece 14-1 is bent up from the fold line 22 with the side plate 3 to stand up, and the both projecting pieces 14-2 are formed.
From the folding line 23 in the middle, the connecting piece 14-3 is connected to the supporting piece 14-1.
Each of the first support portions 14 has a substantially concave side surface by being bent substantially horizontally from a fold line 24 between the first support portion 14 and the bonding portion 25 between the first support portion 14 and the central plate 1-1. Fold line 26 with fitting part 25
An outer wall plate 3-1 that is continuously installed and bent up from
An upper edge plate 3-2 connected to a fold line 27 with the outer wall plate 3-1 and bent inward, and an upper edge plate 3-2 connected to a fold line 28 with the upper edge plate 3-2 and bent downward to form the outer wall plate 3-1 and an inner wall plate 3-3 forming a surrounding buffer space 5 between the inner wall plate 3-3 and the bottom wall plate 2 of the main body portion 2 which is connected from a fold line 29 of the inner wall plate 3-3 and is folded first. -5 Bottom wall plate that bends inward to rest on top
(See the developed view of FIG. 2), and the adhesive portions 25 are attached to the back surfaces of both short sides of the central plate 1-1 by pressing with a press or the like, and are attached to the two short sides. (See the development of FIG. 1).

Further, the inner wall plate 3-3 of the both side plate portions 3 is provided with ear piece portions 3-5 which are provided continuously from the fold lines 30 on both edges thereof and are bent along the inner wall plate 2-4 of the main body portion 2. It becomes. In addition, locking claws 31 are provided on both edges of the bottom wall plate 3-4 of the both side plate portions 3 so as to protrude.
The inner wall plate 2-4 and the bottom wall plate 2- of the main body 2 having the second support portion 20
5 on both sides of the inner wall plate 2-4 and the bottom wall plate 2-5, which are adjacent to the second support portion 20, and are cut and raised along the folding line 10 so as to be openable. It is formed so that it may be stopped and connected. However, after the main body 2 is bent to form the long side wall 1-1 and the bottom 1-2 thereof on the fitting recess 1, the both side plates 3 are bent and the bottom wall 3-4 is placed first. By performing the work of bending inward so as to rest on the bottom wall plate 2-5 of the main body portion 2 to be folded, the hooking claw 31 is hooked and connected to the opened hooking hole 32. (See FIGS. 5 and 8).

The main body 2 and both side plate portions 3 for assembling and constructing the above-mentioned paper buffer body A of the present invention are made of one sheet of paper material corresponding to the respective developed sizes. Die-cut molding can be performed without producing useless debris. In other words, the outer wall plate 2-2 and the upper edge plate 2-3 which are provided continuously from the opposite long sides including the center plate 2-1 to form the long side peripheral wall portion 1-1 of the fitting concave portion 1. , The inner wall plate 2-4 and the bottom of the recess 1
A main body 2 having a bottom wall plate 2-5 for constructing 1-2, and a peripheral wall on the short side of the fitting concave portion 1 which is adhered and connected to both opposite short sides of the central plate 2-1. Exterior wall panel 3-1 to construct part 1-10
, Upper edge plate 3-2, inner wall plate 3-3, and bottom 1-2 of the recess 1
The two side plate portions 3 provided with the bottom wall plate 3-4 having the above configuration have a substantially square shape with no irregularities on the periphery. Therefore, by using one piece of paper plate material corresponding to the size of the main body 2 and the both side plate parts 3, it is possible to form the die without wasteful die-cut debris. Reduction can be expected.

Next, the procedure of assembling the paper buffer A constructed as described above will be described in order. The two side plates 3 are attached and connected to both short sides of the center plate 2-1 of the main body 2. In addition, connecting pieces 13-3, 14 for sticking and connecting the bent pieces 13-20, 14-20 of the both protruding pieces 13-2, 14-2 to each other and the supporting pieces 13-1, 14-1.
The connection between the first support portion 13 of the bottom wall plate 2-1 and the first support portion 14 of the side plate portion 3 which are assembled and connected in a substantially pedestal shape by superimposing and bonding the center plate 2 and the center plate 2 The bending of the inner wall plate 2-4 and the bottom wall plate 2-5 on both long side sides of -1 is performed in advance by a press or the like, and both sides of the inner wall plate 2-4 and the bottom wall plate 2-5 are The second support portion 20 having a substantially L-shaped cross section is formed by bending (the state of FIG. 3). Then, by hand bending from the form of bending by the press, first, the outer wall plates 2-
2 is folded up from the fold line 7 and the upper edge plate 2-3 is bent inward from the fold line 8 with the outer wall plate 2-2. At this time, the outer wall plate 2-2 on one side, in which the hole 33 is opened in the bottom wall plate 2-5, is bent up first, and the hole 33 is not opened. Follow the procedure to bend and raise 2 later. Then, the two protruding pieces 13-2 and 14-2 attached and connected in a superposed state of the first support portions 13 and 14 which are continuously attached to the center plate 2-1 in a substantially pedestal-like shape are attached to the outer wall. An inner wall plate 2-4 is bent inward so as to be wrapped by the plate 2-2, and the first support portions 13 and 14 are attached and connected in a state where the bottom wall plate 2-5 is attached in a superposed state. The pieces 13-3 and 14-3 are put on each other in a state of being superimposed on each other (the state of FIG. 8). As a result, the first support portions 13 and 14 assembled and connected in a substantially gantry shape are provided.
Protruding pieces 13-2, 14-2 and their bent parts 13-20, 14-20
Long side peripheral wall of the fitting recess 1 having an inner / outer double wall structure having a peripheral buffer space 4 whose strength is ensured by the protrusion inside
1-1 and the support pieces 13-1 and 14-1 of the first support portions 13 and 14 as well.
And a bottom 1-2 having a bottom buffer space 6 on the back surface whose strength is ensured by the support of the base. Next, with the ear pieces 3-5 of the inner wall plate 3-3 being bent outward, the outer wall plates 3-1 of the both side plate portions 3 are bent up from the fold lines 26 and rise up. The upper edge plate 3-2 is bent inward from the fold line 27, and the inner wall plate 3-3 is further bent downward from the fold line 28 with the upper edge plate 3-2. Then, the cross section is approximately L
The inner wall plate 3-3 is attached to the upper edge plate 3-2 so as to wrap the second support portion 20 formed by bending in the shape of a letter with the outer wall plate 3-1.
From below. And finally the bottom wall board 3-4
Is folded inward, and the bottom wall plate 3-4 is folded so as to rest on the already folded bottom wall plate 2-5 of the main body 2. Then, the hook portions 31 at both ends of the bottom wall plate 3-4 are hooked in the hook holes 32 between the inner wall plate 2-4 of the long side peripheral wall portion 1-1 and the bottom wall plate 2-5, which are open. They are connected (from the state of FIG. 5 to the state of FIG. 8). Thus, the assembly of the substantially rectangular parallelepiped paper buffer A having the fitting concave portion 1 into which the packaged article is fitted is completed (FIGS. 6 to 9).

Therefore, according to the paper buffer A described above,
Buffer space 4 around each peripheral wall 1-1, 1-10 of fitting recess 1
5 and the bottom buffer space 6 at the bottom 1-2 are excellent in the strength against the weight of the packaged article and the like, and also excellent in the buffer function (shock absorption), and the surrounding buffer space 4 and the bottom buffer space 6 The strength of the spaces 4 and 6 is the central plate of the main body 2.
The two projecting pieces 13-2 and 14-2 of the first support portions 13 and 14 which are provided on the side plates 3 and the two side plate portions 3 and are assembled and connected in a substantially gantry-like shape, and their bent portions 13-20 and 14-. 20 protruding parts and support piece 13
-1, 14-1 and the support by the connecting pieces 13-3, 14-3 which are attached and connected at the same time.
Of the main body 2 is provided by the protrusions of the second support portions 20 provided on both sides of the upper edge plate 2-3 and the inner wall plate 2-4. Moreover, the operation of assembling the first support portions 13 and 14 into the surrounding buffer space 4 and the bottom buffer space 6 and assembling the second support portion 20 into the surrounding buffer space 5 can be performed by a series of assembling operations. it can. That is, the first support portions 13, 14 and the second support portion 20 can be connected to the surrounding buffer spaces 4, 5 and the bottom portion without affecting the series of assembly work at all and without using extra corrugated paper. It can be made to protrude inside the buffer space 6.

[0022]

Since the paper buffer of the present invention is constructed as described above, the following effects are obtained. . According to the first aspect, the resistance to the weight and the like of the packaged article in both the peripheral buffer space of the peripheral wall on one side of the fitting recess and the bottom buffer space of the bottom and the peripheral buffer space of the peripheral wall on the other side are provided. The same strength is achieved by the first support portion and the second support portion provided on the central plate, respectively. In addition, with the use of the first support portion, it is possible to simultaneously withstand the strength of both the buffer space around the peripheral wall on one side and the buffer space at the bottom of the bottom.
Further, the first supporting portion for ensuring the strength of both the surrounding buffer space and the bottom buffer space can be easily included in the surrounding buffer space and the bottom buffer space in a series of assembling work, and similarly, the fitting concave portion is provided. The second supporting portion for improving the strength of the surrounding buffer space of the peripheral wall portion on the other side can be easily included in a series of assembling work.

[0023] According to the second aspect, in a state where the first support portions to be assembled are connected in a substantially pedestal shape, the first support portions are provided in the buffer space around the peripheral wall portion of the fitting concave portion and the bottom buffer space at the bottom portion so as to improve the strength. As a result, the strength of both the surrounding buffer space and the bottom buffer space can be further strengthened.

[0024] According to the third aspect, the outer wall plate, the upper edge plate, the inner wall plate, and the outer wall plate that are continuously provided from the opposite two sides including the center plate to form the one peripheral wall portion of the fitting concave portion. A main body having a bottom wall plate for constructing the bottom,
An outer wall plate, an upper edge plate, an inner wall plate, and a bottom wall, which are adhered and connected to both sides on the other side of the center plate to form the peripheral wall portion on the other side of the fitting recess, and a bottom portion of the recess. A paper buffer is assembled and constructed from both side plates provided with plates.
In other words, since the main body and the both side plate parts have a substantially square shape with little wasted unevenness in the unfolded state,
Die-cutting can be performed by using a single sheet of paper material corresponding to the size and shape of each sheet without generating wasteful die-cut debris as much as possible.

Therefore, according to the paper cushioning material of the present invention, not only the cushioning function for protecting the packaged articles from shocks and vibrations but also the strength against the weight of the packaged articles while providing the cushioning function is provided. It is excellent, and by having the bottom buffer space in addition to the surrounding buffer space, further improvement of the buffer function can be expected. In addition, since a reinforcing structure for increasing the strength can be assembled and formed in a series of assembling work and can be provided inside each of the surroundings and the bottom buffer space, the assembling can be performed easily and easily without using unnecessary labor as in the related art. It can be expected to improve workability. Furthermore, since it can be manufactured without using extra paper such as corrugated cardboard and minimizing the generation of die-cut debris as in the related art, it is advantageous in terms of cost.

[Brief description of the drawings]

FIG. 1 is an exploded view showing an example of an embodiment of a paper buffer according to the present invention in which both side plates are attached and connected to a main body.

FIG. 2 is an exploded view of both side plate portions in a state where the die is formed at the same time.

FIG. 3 is a perspective view showing a bending process in which a first support portion is arranged in a substantially pedestal-like shape, and furthermore, an inner wall plate and a bottom wall number on both sides on one side are bent.

FIG. 4 is a perspective view showing a state in which the outer wall plate on one side is bent from the center plate and stands up;

FIG. 5 is a perspective view showing a state of the process of bending both side plate portions.

FIG. 6 is a perspective view of the paper buffer of the present invention, which is completely assembled.

7 is a sectional view taken along line VII-VII in FIG.

8 is a sectional view taken along line VIII-VIII in FIG. 7;

9 is a sectional view taken along line IX-IX in FIG. 7;

[Explanation of symbols]

A: paper buffer 1 ... recess for fitting 1-1, 1-10 ... peripheral wall 1-
2… Bottom 2… Main body 2-1… Central plate 2-2, 3-1… Outer wall plate 2-3, 3-
2 ... Upper edge plate 2-4, 3-3 ... Inner wall plate 2-5, 3-
4 Bottom wall plate 3 Side plate part 4, 5 Peripheral buffer space 6 Bottom buffer space 7, 8, 9, 10, 16, 17, 2
6, 27, 28, 29 ... Folded lines 11, 12, 15 ... Cut 13,
14: first support portion 13-1, 14-1: support piece portion 13-2, 14
-2: Projecting piece 13-20, 14-20: Bent
20 ... second support part 20-1 ... upper piece part 20-2 ... inner piece part

Claims (3)

(57) [Claims] 1. A paper which is assembled into a substantially rectangular parallelepiped shape by a required bending of a paper board and has an inner / outer double wall structure having a fitting recess for fitting a packaged article and a peripheral wall having a peripheral buffer space. In the cushioning body, a central plate having a substantially rectangular shape, an outer wall plate that rises from each side of the central plate through a fold line, and an upper edge plate that is bent inward from the outer wall plate through a fold line, An inner wall plate that is bent downward from the upper edge plate via a fold line to form the peripheral buffer space between the outer wall plate and the inner wall plate, and is bent inward from the inner wall plate via a fold line to at least the central plate. And a bottom wall plate for arranging a bottom buffer space of the fitting concave portion and a bottom wall of the fitting concave portion, and the central plate is provided with a fold line of an outer wall plate of one of the peripheral wall portions rising from both opposite sides thereof. The two cuts provided and the two cuts A plurality of first support portions which are separated from the center plate by cuts provided in the center plate so as to be continuous with each other, and which are bent up from the center plate into a substantially concave shape via a fold line to stand up; A support piece supporting the bottom of the fitting recess is bent up from the central plate via a fold line over one peripheral wall in the space width of the bottom buffer space, and from both sides of the support piece. Protrudingly provided in the space width of the peripheral buffer space of one of the peripheral walls,
A projecting piece projecting into the surrounding buffer space; and, on both sides of one of the peripheral walls, cut out from the inner wall plate and the bottom wall plate by cuts provided inside the both sides, and A second support portion is provided in the surrounding buffer space so as to protrude and have a substantially L-shaped cross section. The second support portion has an upper portion having a space width of the surrounding buffer space of the other peripheral wall portion, and the upper portion. And an inner piece which is bent downward through a folding line. 2. The buffer according to claim 1, wherein adjacent first support portions of the first support portions provided in parallel on the central plate are paired, and a support piece portion of each first support portion is provided. Has a continuous piece that is bent along the bottom back surface of the fitting concave portion via a fold line extending between the two projecting pieces, and from the required of the continuous piece and the both projecting pieces, Fold the bent parts in the opposite direction and stick them together,
A paper buffer, wherein a pair of first support portions are connected in a substantially pedestal shape. 3. The shock absorber according to claim 1, wherein an outer wall plate, an upper edge, and a central plate, and at least one peripheral wall portion of the fitting recess formed continuously from one of two opposite sides of the central plate. The main body portion including the plate and the inner wall plate is formed by stamping and forming the main body portion from one sheet of paper plate material, and at least the other peripheral wall portion of the fitting concave portion is attached and connected to the other two opposite sides of the central plate. A paper shock absorber characterized in that both side plates including an outer wall plate, an upper edge plate, and an inner wall plate are formed by die-cutting from a single sheet of paper material.