JPH0656147A - Folded-type corrugated board packing - Google Patents

Abstract

PURPOSE:To obtain a folded-type corrugated board packing having an approximately parapelloid shape foldable from a single piece of fiberboard by providing a product fitting recess with a plurality of buffer ribs applied on an outer periphery. CONSTITUTION:This corrugated board comprises outer wail pieces 2, 3 to be outer wall faces of a packing respectively connected via a main fold A to right and left sides of a bottom piece 1 provided with a plurality of standing curs H (fold I for standing) for forming a plurality of buffer ribs 12 in a cut standing state, top faces 4, 5 of the packing and recess forming pieces 10, 11 for bent-forming a fitting recess S connected via folds F, G to both sides. Both outer wall pieces are equipped with stand aiding pieces 14 having a standing fold I tilted 45 degrees so that they are connected no both ends of each buffer rib, while the recess forming piece 10 is equipped with a cur 15 and folds J, K for forming a buffer rib 12A. A buffer slit 20 may be provided on ridges of top faces 4, 5 of the packing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to the case where an article such as a notebook type personal computer, a video tape recorder, an electronic book, etc., which is extremely sensitive to impact force, is packed in a cardboard box. The present invention relates to a foldable corrugated cardboard packing which fits both ends of a packaged article and buffers and supports the same, and which plays a role of a conventional foamed polystyrene packing.

[0002]

2. Description of the Related Art The above-mentioned styrofoam packing is formed into a block body having an arbitrary three-dimensional shape by casting a foaming resin raw material. Further, as another packing, a packing made of corrugated cardboard in which several corrugated cardboard pieces cut into an arbitrary shape are attached to each other and put together in a block body having a desired three-dimensional shape is also used.

[0003]

However, since Styrofoam is made from petroleum, which is a finite natural resource, as a raw material, it should be avoided as much as possible as a packaging material that is discarded as it is if it serves one transportation purpose. desirable. Also, from the viewpoint of measures to dispose of municipal waste, which is becoming more and more serious, Styrofoam is bulky, transport costs are high, it is not suitable for landfill, and if burned, it will generate high temperature and damage the incinerator. Having problems, the emergence of some alternative to this is desired. On the other hand, a piece made by sticking corrugated cardboard pieces is preferable because it is made from reproducible wood, recycled paper is easy to recycle, and disposal problems are far less than those of Styrofoam. The work is labor intensive and costly, and the buffer function is insufficient. Therefore, an object of the present invention is to use cardboard as a raw material, to make it efficiently and inexpensively, and to provide a cushioning function that is superior to conventional foam polystyrene packing and a laminated block body of corrugated cardboard pieces, but the design of the details can be changed appropriately. By doing so, it is possible to provide a foldable corrugated cardboard packing whose cushioning characteristics can be easily fine-tuned so as to be optimal for each use, and which can be compactly folded for storage / transportation.

[0004]

A foldable corrugated cardboard packing according to the present invention for achieving the above object is a single corrugated cardboard 1 having folds, cuts or the like at predetermined plural positions.
By simply folding 01 to 105 along the fold line, the packings 201 to 205 having the rectangular fitting recess S for fitting the packaged article into the outer shape of the rectangular parallelepiped are folded up and the fitting recess S A plurality of cushioning ribs 12 and 12A, which are in contact with each other at a predetermined interval around the outer circumference, are formed in a cut-and-raised shape.
Reference numerals 1 to 105 denote bottom surfaces of the packings 201 to 205, and a bottom surface piece 1 provided with a plurality of cut-and-raised cuts H (and cut-and-raised folds i) for forming the plurality of cushioning ribs 12 in a cut-and-raised shape. , And outer wall pieces 2 and 3 for forming left and right outer wall surfaces of the packings 201 to 205 are connected to the left and right sides of the bottom piece 1 through main folds A and A, respectively. The packing 2 is attached to the side edges of the outer wall pieces 2 and 3.
The top surfaces 4 and 5 of Nos. 01 to 205, one side surface pieces 6 and 7 of the fitting recess S, and the bottom surface pieces 8 and 9 are bent along two folds B, C and D, E. The recess forming pieces 10 and 11 are continuously provided through the folds F and G, and the outer wall pieces 2 and 3 are cut and raised folds I and 45 which are inclined at 45 degrees with respect to the main fold A. A cutting and raising auxiliary piece 14 surrounded by an extended end portion of H is provided so as to be connected to both left and right ends of each of the plurality of cushioning ribs 12 via the main fold A, respectively. At both ends,
Bending cuts 15 and folding folds J and K are formed by dividing these portions into strip-shaped portions 4a and bending them into a substantially Z-shape to form buffer ribs 12A. At both front and rear end portions, a fold line L and a cutout line 17 for dividing this portion into strip-shaped portions 5a and connecting the other opposing side surface pieces 16 of the fitting recess S to this portion are formed. The configuration is provided. And the packing 20
It is preferable to provide buffer slits 20 having appropriate lengths and widths at arbitrary positions on the ridges of the top surfaces 4 and 5 of Nos. 1 to 205.

[0005]

The packing 201 (to 205) is a cardboard 101 (to 105) that is not bulky during storage and transportation.
Has been deployed to. From the corrugated board 101 shown in FIG.
In order to fold up the packing 201 shown in FIG. 5, first, as shown in FIG. 2, holding both ends of the corrugated board 101, the main folds A, A are once bent downward, and the cushioning ribs 12 are easily erected. When the bending ribs 12 are bent upward at a right angle, the cushioning ribs 12 and the cut-and-raising auxiliary pieces 14, 14 connected to both sides of the cushioning ribs 12 face each other and face each other. It is pressed between the outer wall pieces 2 and 3. Therefore, the cut-raising folds I (i) are bent upward, and the main folds A, A are bent downward, so that the cushioning ribs 12 stand up by themselves. Then, as shown in FIG. 4, the left recessed portion forming piece 10 is bent inward along the fold line F, and the fold lines B and K are turned inward, and
When the folds C and J are bent outward at right angles, the bottom piece 8 is brought into contact with the bottom of the concave cutout provided in the buffer rib 12 to form the fitting recess S in the fitted state. ,or,
The facing side piece 6 is brought into contact with the side surface of the cutout. Next, when the right-side recess forming piece 11 is bent inward along the fold line G, and the fold line D is bent inside and the fold line E is bent outward at right angles, the bottom surface piece 9 is placed above the bottom surface piece 8. The bottom surface of the cutout is fitted in contact with the bottom surface of the cutout, and the opposing side surface piece 7 is in contact with the side surface of the cutout. After that, if the opposing side wall pieces 16 and 16 are bent downward, the folding of the packing 201 can be completed extremely easily and quickly, unlike a slightly redundant folding operation. The usage state of the packing 102 is illustrated in FIG.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The packing 201 whose appearance is shown in FIG. 5 has a substantially rectangular parallelepiped outer shape, and the packing recess S provided in the upper surface (in the drawing) of the packing 201 has a rectangular fitting recess S as shown in FIG. It is configured such that the end portion of 300 is fitted and buffered and supported. This packing 201 is a cardboard 101, as shown in FIG. 1, during storage and transportation.
It is expanded to make it not bulky. Cardboard 101
Since folds, cuts, etc. are provided at a plurality of required positions, the shape and arrangement of these will be described in detail below.

The corrugated cardboard 101 has a rectangular bottom piece 1 as the main part, which becomes the bottom of the packing 201 when folded up. Outer wall pieces 2 and 3 for forming left and right outer wall surfaces of the packing 201 are connected to each other on both left and right sides (the same applies in FIG. 1) of the bottom piece 1 through main folds A, respectively. . At the side edges of the outer wall pieces 2 and 3, the packing 2 is attached.
The top surface 4, 5 of No. 01, the left and right facing side pieces 6, 7 and the bottom surface 8, 9 of the fitting recess S are bent along two folds B, C and D, E to form a recess. Pieces 10 and 11
Are continuously provided through folds F and G.

On the bottom surface piece 1, a plurality of buffer ribs 12 abutting on the outer side of each surface of the square fitting recess S, in this case four, having a substantially concave planar shape are provided at predetermined intervals. A cut-and-raised cut, a cut-and-raised fold, and the like, which will be described in detail below, are provided so as to stand up in a cut-and-raised shape with being separated. That is, in the middle of the bottom piece 1, a rectangular hollow 13 is provided so as to extend between the two main folds A, A. Then, a flat U-shape is formed at each intermediate position between the hollow 13 and the front (lower side in FIG. 1) edge of the bottom piece 1 and the rear (upper side in FIG. 1) edge. The cut-and-raised cuts H, H are provided to face each other while straddling the left and right outer wall pieces 2, 3, respectively. still,
The front and rear ends of the bottom piece 1 are made to project from the front and rear edges of the outer wall pieces 2, 3 by a predetermined size. As a result, rectangular cushioning ribs 12 are formed at a total of four positions on the front and rear sides of the hollow hole 13. Then, square cutouts 12a are provided in the upper portions (in an upright state) of the two middle cushioning ribs 12 and 12, and the cushioning ribs 1 at the front and rear ends are formed.
Square notches 12b each having a lateral width approximately half that of the notch 12a are provided at the upper portions of the reference numerals 2 and 12, respectively. That is, the planar shape of each buffer rib 12 is substantially concave. And notch 1
The width of 2a is substantially equal to that of the fitting recess S, and each notch 1
The depth of 2a, 12b is made somewhat shallower than that of the fitting recess S.

The outer wall pieces 2 and 3 are provided with cut-and-cut cuts H extending from both left and right ends of the bottom piece 1 as shown in FIG. 1, reaching the middle of the width thereof. Cut-and-rare fold I that connects each end of the main fold A with the main fold A at a 45 degree inclination
Are provided at a total of 8 locations. By this, 2 in the middle
At the left and right ends of the two buffer ribs 12, 12, trapezoidal auxiliary pieces 14 having a substantially trapezoidal shape are connected to each other through a main fold A. Further, similar cutting and raising auxiliary pieces 14 are connected to the left and right ends of the buffer ribs 12 at the front and rear ends through the main fold A. These two cutting and raising auxiliary pieces 14
Is also connected to the outer wall pieces 2 and 3 through the cut and raised fold line I inclined at 45 degrees. A half-cut line is provided on the back side of each cut-and-raised fold line I to facilitate bending.

In the recess forming piece 10 on the left side of FIG. 1, with the packing 201 folded up, as shown in FIG.
In order to bend and form the cushioning rib 12A, a folding cut 15 of a predetermined length extending outward from the fold B is provided in parallel with the edge on the inner side at a predetermined distance from the front and rear edges. ing. As a result, the bending cuts 15, 15
The strip-shaped portions 4a, 4a are formed between the front and rear edges, respectively. The strip-shaped portion 4a is provided with folding folds J and K for bending this portion into a substantially Z shape to form the buffer rib 12A as shown in FIG. Further, the fold line B lacks the fold line B at the front and rear portions of the respective folding cuts 15, 15. Further, along the fold line B, the buffer slit 2 having a predetermined length and width.
0 is set.

In the recess forming piece 11 on the right side of FIG. 1, folds L and L are provided at positions substantially symmetrical with the bending cuts 15 and 15. As a result, between the folds L, L and the front and rear edges of the recess forming piece 11, respectively, the strip-shaped portions 5a, 5a,
5a is formed. Further, inside each of the folds L, L, cutout cuts 17, 17 for forming the front and rear facing side surface pieces 16, 16 of the fitting recess S in a cutout shape are provided. The strip plate-shaped portions 5a, 5a are in a state in which the portions preceding the fold line L are cut off. Then, by providing the notch a in the right end portion of the fold line L, each facing side piece 1
An engaging claw 16a is formed at the right end of the reference numeral 6. Furthermore, the fold D is made to be absent in the portion that crosses the strip-shaped portions 5a, 5a. Further, along the fold line D, a buffer slit 20 having a predetermined length and width is provided. The creases shown by the solid lines in FIG. 1 are bent upward, and the folds shown by the broken lines are bent downward.

Next, the operation of the above configuration will be described. The packing 201 is expanded on one cardboard 101 so as not to be bulky during its storage and transportation. This cardboard 10
To fold up the packing 201 shown in FIG. 5 from 1,
First, as shown in FIG. 2, holding both ends of the corrugated board 101, both main folds A, A are once bent downward, and creases are formed so that the cushioning ribs 12 can be easily raised. Then
Next, when both main folds A, A are bent upward at a right angle, the respective buffer ribs 12 and the cut-and-raised auxiliary pieces 14, 14 continuously provided on both sides of the buffer ribs 12 face each other on the left and right outer walls. It is squeezed between pieces 2 and 3. Therefore, each of the cut and raised folds I, which are easily bent, are bent upward, and the main folds A,
A is bent downward, and the respective cushioning ribs 12 stand up by themselves.

Therefore, as shown in FIGS. 3 and 4, the recessed portion forming piece 10 on the left side is bent inward along the fold line F, the fold lines B and K are directed inward, and the fold line C and C.
When J is bent outward at right angles, the laterally convex bottom pieces 8 are formed in the notches 12 formed in the cushioning ribs 12.
The bottom surfaces of the a and 12b are brought into contact with each other in a fitted state, and the opposite side surface piece 6 is brought into contact with the side surface of the notch 12a. Next, when the right-side recess forming piece 11 is also bent inward along the fold line G, and the fold line D is bent inside and the fold line E is bent outward at right angles, respectively, the lateral convex bottom piece 9 is formed. Is abutted on the bottom surface of the notch 12a of the cushioning rib 12 in a fitted state in a state of being overlapped with the bottom surface piece 8,
Is in contact with the side surface of the notch 12a.

After that, when the opposing side wall pieces 16 and 16 are bent downward, the locking claws 16a and 16a are caught in the bending cut 15 of the recess forming piece 10 on the left side, and the bent state is changed. Fixed. Thus, folding the packing 201 differs from the above description of the slightly redundant folding operation,
Very easy and quick to complete.

Next, the two folded packings 201,
As shown in FIG. 6, using 201, for packing a substantially rectangular parallelepiped packing article 300, such as an electronic book, which is extremely sensitive to external shocks in a cardboard box 400. The cushioning action of the packing 201 will be described.
In the packaged article 300, the fitting recesses S of the packing 201 are fitted into both ends in the longitudinal direction thereof. In other words, both end portions of the packaged article 300 are in a state where their four peripheral surfaces and end surfaces are in contact with the facing side surface pieces 6, 7, 16, 16 and the bottom surface 8, 9 of the fitting recess S, respectively. In this state, the cushioning ribs 12 are orthogonally applied to the outer side surfaces of the facing side surface pieces 6 and 7 and the bottom surfaces 8 and 9, and the recesses are formed in the outer side surfaces of the facing side surface pieces 16 and 16. The cushioning ribs 12A, 12A formed by bending the strip-shaped portions 4a at the front and rear ends of the forming piece 10 into a Z shape are orthogonally applied. Therefore, the packaged article 300 is reliably protected from the impact force exerted during transportation and handling with the aid of the cushioning ribs 12 and 12A having the cushioning characteristic peculiar to the corrugated board.

Also, the ridges of the top surfaces 4 and 5 of the packing 201,
In this case, buffer slits 20 are provided on both the left and right edges of the fitting recess S, respectively. The left and right sides of the fitting recess S have a double wall structure and are relatively short in length, and therefore have a fairly rigid structure. It can be changed to a flexible structure, and the cushioning function of this part can be significantly improved. The degree of this flexible structure can be finely adjusted so as to be most suitable for each packaged article by appropriately changing the length and width dimensions of the buffer slit 20 based on experimental data.

Further, the distance between the plurality of cushioning ribs 12 and the shape thereof, for example, the height dimension thereof can be arbitrarily changed, the position and width dimension of the cushioning rib 12A can be changed, or the cushioning ribs can be changed. Even if two sheets of 12 and 12A are stacked, it is possible to easily change the cushioning characteristics of each part of the packing 201 subtly so as to match the structure and shape of each packaged article. Therefore, even if a strong impact force is exerted during the handling or transportation of the packaged article 300, this impact force is effectively attenuated by the packing 201 as long as the impact force remains below the level assumed at the design stage of the packing 201. The packaged article 300 is reliably protected from impact. When an impact force equal to or higher than the assumed level is exerted on the packing 201, the side wall portion having the double wall structure, the cushioning ribs 12 and 12A, etc. are buckled and deformed, resulting in this excessive impact. It effectively attenuates the force.

7 and 8 show the packing 20 of the second embodiment.
2 is shown. In this case, the packaged article 300 is a thick-plate article whose upper surface is inclined forward and downward, such as a keyboard unit of an electronic musical instrument, so that the fitting recess S also has a shape corresponding to the cross-sectional shape. Further, since the dimension of the left and right double wall portions of the fitting recess S is considerably long and the rigidity of this portion is relatively low, the buffer slit 20 is omitted. Instead, the number of cushioning ribs 12 is increased to six, and four cushioning ribs 12 excluding both ends thereof are back-to-back with each other to enhance load bearing ability.

Therefore, the bottom piece 1 of the corrugated board 102 shown in FIG. 7 is formed by bending the packing 202 shown in FIG.
A part corresponding to the hollow 13 of the cardboard 101 is omitted. Then, two cushioning ribs 12, 12 are formed upright in a back-to-back shape, and a cut and raised fold i is provided between both main folds A, A. Further, in correspondence with one side surface of the packaged article 300 bulging in a convex shape in a plan view, the recess forming piece 10 has a second bending inside inside each of the bending cuts 15 and 15. Cuts 21 and 21 are provided to face the opposite side surface 6.
A step portion b is formed at the bottom. Reference numeral 22 is a hollow for avoiding the protrusion of the packaged article 300. It should be noted that the height dimensions of the six cushioning ribs 12 are the same as the top surfaces 4, 5 of the packing 202 except for one at the front (lower) end where the cushioning property is particularly desired to be increased.
The size is such that the

9 and 10 show the packing 203 of the third embodiment. In this case, as the packed article 300, for example, an article that is relatively large and heavy, such as a notebook computer, is suitable. Therefore, the packing 203 shown in FIG. 8 is folded up and the cardboard 103 shown in FIG. 9 is folded.
Does not cut out a portion corresponding to the hole 13 of the corrugated board 101, and uses this portion as a connecting piece 23, and cut-raising folds i, i are provided at both front and rear (upper and lower in the figure) edge portions of the connecting piece 23, respectively. ing. Then, the folds i and i for both cuts and the bottom piece 1
Between the front and rear edges, a total of six buffer ribs 12 are formed, three each. The middle two of the cushioning ribs 12, 12 have their bottom edges integrally connected by a connecting piece 23, thereby increasing the structural strength or load bearing capacity of the packing 203 as a whole. Further, among the six cushioning ribs 12, the cushioning ribs 12 at the front and rear ends
Has a height dimension such that its upper edge is brought into contact with the top surfaces 4 and 5 of the packing hang 203 to increase load bearing ability. The remaining four sheets are set to have a height dimension such that a gap is formed between the upper edge and the top surfaces 4 and 5 so as to increase the cushioning performance of the packing 203. Further, the recess forming piece 10 is provided with a finger hole 24 along the fold line C.

11 to 14 show packings 204A and 204B of the fourth embodiment. Folding up the packings 204A and 204B shown in FIGS.
The cardboards 104A and 104B shown in 2 each have 5
The buffer ribs 12 are formed. A strip-shaped connecting piece 25 is connected to the bottom edges of the cushioning ribs 12, 12 at both ends via cut-and-raising folds i, respectively. As a result, the structural strength of both end portions of the packings 204A and 204B in the longitudinal direction is increased. And the packed article 3
The corrugated boards 104A and 104B have different formation positions of the folding cuts 21 in correspondence with the asymmetric shapes of the left and right sides of 00. Further, the corrugated board 104B is provided with a hollow 26 for avoiding the protrusion of the packaged article 300.

15 to 16 show the packing 205 of the fifth embodiment. The cardboard 105 shown in FIG. 15 in which the packing 205 shown in FIG. 16 is folded up is formed with five cushioning ribs 12, and among them, the bottom edges of the cushioning ribs 12, 12 at both ends are The strip-shaped connecting pieces 27 are continuously provided outwardly via the cut-and-raised fold line i. As a result, the structural strength of both end portions of the packing 205 in the longitudinal direction is increased. Regarding the height of the five cushioning ribs 12, the height of the two ribs at both ends is low and the other three are equal to the height of the packing 205. Further, the facing side piece 16 is provided with a hollow 28 that avoids the protruding portion of the packaged article 300.

In each of the above constructions, the shape of the fitting recess S may be arbitrarily determined in accordance with the outer shape of the packaged article 300, and the shape and number of the shock absorbing ribs 12 and 12A also have the necessary shock absorbing characteristics. The size of each part of the packings 201 to 205 may, of course, be determined so as to fit the outer shape of the packaged article 300. Then, the packings 201 to 205 may be used such that the packing article 300 is completely fitted into the fitting recess S.

[0024]

As is clear from the above description, the folding corrugated cardboard packing according to the present invention exhibits various practical advantages as listed below, as compared with the conventional foam polystyrene packing. . (A) It can be provided at a lower cost because it can be made by simply providing a crease or punching on one sheet of cardboard. (B) Since it can be stored and transported in a flat and compact form, storage and transportation costs are greatly reduced. (C) Contribute to waste of oil resources. (D) It occurs with the large-scale disposal of Styrofoam,
The problem of garbage disposal can be solved. (E) Then, the cushioning characteristics of the packing can be easily adjusted so as to be most suitable for each packaged article by appropriately changing the positions, the numbers, the shapes, etc. of the cushioning ribs and the cushioning slits. Further, compared with the packing made by stacking the conventional corrugated cardboard pieces, the cushioning performance is remarkably excellent, and the packing can be made much more efficiently and cheaply.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, and is a plan view showing a state in which packing is developed on one cardboard.

FIG. 2 is a perspective view showing a state where the corrugated board is started to be folded up into a packing form.

FIG. 3 is a perspective view showing a state in which cushioning ribs are erected during folding up.

FIG. 4 is a perspective view showing a state in which the packing is substantially folded up.

FIG. 5 is a perspective view of the packing that has been folded up.

FIG. 6 is a plan view showing a state in which the packed article is packed using two packings and a cardboard box.

FIG. 7 shows a second embodiment and is a plan view showing a state in which the packing is developed on one cardboard.

FIG. 8 is a perspective view of the packing that has been folded up.

FIG. 9 shows a third embodiment and is a plan view showing a state in which the packing is developed on one cardboard.

FIG. 10 is a perspective view of the packing that has been folded up.

FIG. 11 is a plan view showing a fourth embodiment in which one of a pair of packings is developed on a single cardboard.

FIG. 12 is a plan view showing a state in which the other of the one set of packings is unfolded onto one corrugated cardboard.

13 is a perspective view of a packing folded up from the corrugated board of FIG. 11. FIG.

FIG. 14 is a perspective view showing a packing folded up from the corrugated board of FIG. 12 in a state of being turned upside down.

FIG. 15 shows a fifth embodiment and is a plan view showing a state in which the packing is developed on one cardboard.

FIG. 16 is a perspective view of the packing that has been folded up.

[Explanation of symbols]

 101-105 Corrugated board 201-205 Packing 300 Packing article 400 Corrugated board box S Fitting recess 1 Bottom piece 2,3 Outer wall piece 4,5 Top surface 4a, 5a Strip plate portion 6,7 Opposing side piece 8,9 Bottom piece 10 , 11 recess forming pieces 12, 12A (4a) cushioning ribs 13 hollowing holes 14 cutting and assisting pieces 15 bending cuts 16 facing side pieces 16a engaging claws 17 cutting cuts 20 cushioning slits 21 bending cuts 22, 26, 28 Recessed hole 23, 25, 27 Connecting piece 24 Finger hook hole a Notch b Step portion A Main fold B to G, L Fold H Cut and cut I, i Cut and fold J, K Fold fold

Claims (2)

[Claims] 1. A rectangular fit for fitting a packaged article into a package having a substantially rectangular parallelepiped shape only by bending a piece of corrugated board 101-105 having folds, cuts or the like at a plurality of predetermined locations along the fold. Packing 201 with a matching recess S
˜205 are folded up, and a plurality of cushioning ribs 1 are brought into contact with the outer periphery of the fitting recess S at predetermined intervals.
2, 12A are formed in a cut-and-raised shape, and the corrugated boards 101 to 105 are the packing 201 to
A bottom piece 1 having a plurality of cut-and-cut cuts H (and cut-and-raised folds i) forming the bottom surface of 205 to form the plurality of cushioning ribs 12 in a cut-and-raised shape is mainly used as the main portion. On the left and right sides of the
Outer wall pieces 2 and 3 that form the left and right outer wall surfaces of 05 are continuously provided via main folds A and A, respectively, and the packings 201 to 3 are attached to the side ends of the outer wall pieces 2 and 3, respectively.
The top surfaces 4 and 5 of 205, the one side surface pieces 6 and 7 of the fitting recess S and the bottom surface pieces 8 and 9 are folded into two folds B,
Concave forming pieces 10 and 11 which are bent along C, D, and E are continuously provided through folds F and G, and the outer wall pieces 2 and 3 are inclined at 45 degrees with respect to the main fold A. The cut-and-raising auxiliary piece 14 surrounded by the cut-and-raised fold I and the extended end of the cut-and-raised cut H is connected to the left and right ends of the plurality of cushioning ribs 12 via the main fold A, respectively. In the front and rear end portions of the recess forming piece 10, the portions are divided into strip-shaped portions 4a and bent into a substantially Z shape to form a buffer rib 12A. Bending folds J and K are provided, and the front and rear end portions of the recess forming piece 11 are divided into strip plate portions 5a, and the fitting recess S is formed in this portion.
The fold line L for connecting the opposite side surface pieces 16 of the
Also, a folding corrugated packing which is provided with cutout cuts 17. 2. The top surfaces 4, 4 of the packings 201-205.
5. The folding corrugated cardboard packing according to claim 1, wherein a buffer slit 20 having an appropriate length and width is provided at an arbitrary position of the ridge of No. 5.