JP2003104452A - Cardboard cushioning material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb an impact by a corner part of a cardboard cushioning material even when the impact input in the diagonal direction of a top plate is applied from the outside to a packing body using the cardboard cushioning body by preventing the rigidity of the corner part of the cardboard cushioning body from being increased even when side plates are affixed to each other. SOLUTION: In the cardboard cushioning body having an opening 8 corresponding to an article to be accommodated in the top plate 3, a sub blank B forming a recessed part 23 for accommodation with side plates 12 and 13 erected around a bottom plate 11 is assembled with the opening 8 in a main blank A with a side plate 5 folded down. A corner part 7a of an outer peripheral surface 7 of the cushioning body is formed deformable with four corners of the top plate 3 of the main blank A cut off.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paperboard buffer. 2. Description of the Related Art Styrofoam cushions have been used for packing and transporting not only electric products but also various articles. However, environmental destruction due to an increase in styrofoam material as garbage has occurred. Because of the growing concern that cushioning materials have been replaced by paper instead of styrofoam, the use of short fibers or thinner materials in paper-based cushioning materials has been increasing. There is a type obtained by hardening a piece of paper material or a type obtained by assembling a cardboard made of cardboard or cardboard. As an example of a basic structure of the above-described cushioning body made of paperboard, as shown in FIG. 11, an outer box is formed by bending four sides of one blank a using a side plate b as a leg. c, a cut is made in a cross-section at a required portion of the top panel e on the side where the stored article d is taken in and out, and each of the four tongue pieces f formed by the cut is bent to form the stored article d. In addition to forming the opening g corresponding to the shape of the above, the movement of the storage article d is suppressed by the bent tongue pieces f, and the storage recess h having a depth in the storage article insertion direction is connected to the opening g. There is something. [0004] In addition to the above-mentioned one-piece blank, there is also a cushion consisting of a plurality of blanks. As shown in FIGS. 12 and 13, one main blank a is to be 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 to be adjacent to each other. The outer peripheral surface of the buffer body inclined in a skirt-spreading shape is formed by bonding the side plates b to each other, and the opening g is provided in the top plate e. And, in another blank i, a plurality of side plates j for suppressing the movement of the stored articles d
Is bent from the periphery of the bottom plate k, the blank i is made to correspond to the opening g, and the adhesive margin l located at the end of each side plate j is attached to the periphery of the opening g. The above-mentioned blank i was assembled to the opening g, whereby a recessed recess h having a recessed inner peripheral surface which was recessed in the direction of the back surface of the top plate and became narrower on the bottom plate k side was formed in the opening g. [0005] Of the above-mentioned cushioning members made of paper material, a cushioning material obtained by hardening a short-fiber or fine-grained paper material is liable to generate paper dust during use or the like. It has the drawback that it is not suitable for cushioning when products or precision machinery are used as storage goods, and the appearance of stored goods deteriorates because the surface of the buffer itself is rough and the color is gray. There's a problem. From such a point, a buffer made of a paper material made of paper made from paper, such as a cardboard or cardboard, is often used, and a buffer made of paperboard having a storage recess by combining a plurality of blanks as described above. The body is also being adopted. Further, in the above-mentioned paperboard buffer, since it is not efficient to assemble the blank from the blank when putting it in the outer box in combination with the storage article, the blank is assembled in advance and the buffer outer peripheral surface is adjacent to the blank. Side plates are also attached to each other to form a three-dimensional object, which is supplied as a paperboard buffer to the packing process of stored articles. By the way, it is easy to handle a large number of paperboard cushions to be used in a packing line, etc., and it is necessary to keep the space occupied by many cushions small. Has made stacking possible. That is, as described above, the outer peripheral surface of the shock absorber is inclined so as to expand into a skirt, and the inner peripheral surface of the concave portion of the storage concave portion is inclined so as to become narrower toward the bottom plate side, so that the periphery of the storage concave portion below the top plate is removed. The top plate side of the lower buffer is inserted into the space, so that the stacked state of the buffers is stabilized. However, in the paperboard buffer having the above-described structure, the two side plates are bonded to each other at positions corresponding to the four corners of the top plate. The three surface materials, the face plate and the two side plates, are gathered in a continuous state and partially have high rigidity. Therefore, even if an impact which causes the diagonal direction of the top panel is applied to the package using the paperboard cushion, the rigidity of the corner portion is high, so that the product supported by the paperboard cushion is supported. However, there is a problem that the impact is easily transmitted directly to the tire, and it does not function as a shock absorber. Therefore, the present invention has been made in consideration of the above problems,
The purpose is to prevent the rigidity of the corners of the paperboard cushion from increasing even when the side panels are bonded together, and to input the diagonal direction of the top board to the package using the paperboard cushion. An object of the present invention is to make it possible for a corner portion of a paperboard cushion to absorb the shock even if the shock is applied from the outside. SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has an opening corresponding to a storage article in a top plate serving as a top surface of a cushioning body, and has an opening around the top plate. In the opening of the main blank forming the buffer body outer peripheral surface by folding the side plate and bonding the adjacent side plates to each other, a sub-blank forming a storage recess composed of a bottom plate and a side plate surrounding the bottom plate is provided. Assembling, in the paperboard buffer body in which the storage recess recessed in the direction of the top board backside is located in the opening, cut out the squares of the top board of the main blank and deform the corners of the buffer body outer peripheral surface. An object of the present invention is to provide a paperboard buffer characterized by being made possible, and to solve the above problems. Next, the present invention will be described in detail based on an embodiment shown in FIG. 1 to FIG. In FIG. 1, reference numeral 1 denotes a paperboard buffer, which has a storage recess whose top surface side is opened to serve as an insertion opening. A storage article or a part of the storage article is fitted into the storage recess, and the state is changed. By storing it in a box or the like, the movement of the stored article during transportation or the like is suppressed, and even if an external shock is applied to the outer box, the shock absorbing by the paperboard buffer and transmitting the shock transmitted to the stored article is absorbed. It is something to reduce. The paperboard buffer 1 is composed of three blanks, a main blank A forming the basic skeleton of the paperboard buffer 1 and two sub-blanks B and C forming a storage recess described later. By pressing in a superimposed state, the three blanks are combined with each other in a state where the respective face plates are bent and raised, and the three blanks are bonded at required positions as described later. It is one. As shown in FIG. 5, one sub-blank B is superimposed on the main blank A before pressing, and another sub-blank C is superimposed under the main blank A. Press working is performed in the state. As shown in FIG. 3, in the main blank A, a top plate 3 serving as a top surface of the paperboard buffer is disposed at the center, and a side plate 5 is provided on each side of the top plate 3 via a folding portion 4. Are connected, and each side plate 5 is folded down from the folding portion 4 to form the outer peripheral surface of the paperboard buffer 1. In each of the side plates 5 located on the long side of the top plate 3, glue margin pieces 6 are connected to the respective sides via the folding portions 4, and the main blank A is assembled. The glue margin piece 6 is bent from the folding part 4 and bonded to the side plate 5 located on the short side of the top plate 3. The lower end of each of the side plates 5 serving as the outer peripheral surface of the paperboard buffer 1 is located slightly outward from the position of the folded portion 4 on the four sides of the top plate, and the outer peripheral surface 7 of the buffer is inclined in a skirt-spreading manner. It is provided in. 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 cut out. A notch 3a is formed at a corner of the paperboard buffer body 1 from the inside to the outside. In this manner, the notch 3a is open 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 surface plate 3, that is, the portion connected via the adhesive margin piece 6, that is, the corner portion 7 a of the cushion outer peripheral surface 7, as shown in FIG. Even if an impact X that is input in the diagonal direction of the top panel is applied to the used packing body or the like, the corner 7a is deformed and absorbs the impact, and the paper board-shaped buffering body supports the corner 7a. Reduces the impact transmitted to the product. An opening 8 is formed in the center of the top plate 3 so as to allow the whole or a part of the stored article to be inserted in accordance with the shape of the stored article. Is applied in advance. This adhesive 9
In the normal state, there is no bonding, and the bonding condition such as pressure and heat at the time of the press working is applied so as to exhibit the bonding force. The corresponding portions of the blank B, which will be described later, are attached. The adhesive 9 is also applied to the glue margin 6, and the glue margin 6 and the side plate 5 are assembled and overlapped at the time of press working, and the adhesive 9 having an adhesive force at the time of press working is used. It is stuck. One of the two sub-blanks B is assembled from above into the opening 8 of the main blank A, and as shown in FIG. And 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 folded portion 4. , And two side plates 13 which are located in the opposite direction of the two bottom plates 11 and are connected to each other via the folded portion 4. As described above, the sub blank B has four side plates 12 and 13 in all directions,
The side plates 12 and 13 are inserted into the openings 8 in the top plate 3 of the main blank A while being folded during the press working, and the folded portions 4 are formed at the edges of the side plates 12 and 13.
The adhesive blanks 14 are connected to each other through the adhesive 9 on the peripheral upper surface of the opening 8 so that the sub blank B is assembled and fixed to the opening 8.
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-up piece 10 is opened by punching, so that the opening 15 for forming the upper bottom is continuous by standing the folded-up piece 10. That is, a part of the sub-blank C described below is applied from below to the two folded pieces 10 in a state of being turned down,
In this state, each of the folded pieces 10 is folded by pushing the part of the sub blank C. In the paperboard buffer 1, as described above, the side plates 12, 13 are formed in the openings 8 of the top plate 3 in the main blank A.
And the auxiliary blank B is inserted, and the adhesive margin piece 14 on the auxiliary blank B side is bonded to the periphery of the opening 8. In addition, a mold opening 20 through which a rod that advances from the press mold side at the time of assembling is inserted into 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. Is provided. FIG. 4 shows a developed state of a sub blank C to be assembled from the main blank A from the side opposite to the sub blank B. When the sub-blank C is assembled by a required press in a state where three blanks B, A, and C are stacked, the sub-blank C enters the upper-bottom forming opening 15 of the sub-blank B and faces the opening 8 side. The face plate 21 is arranged at the center.
Then, the folding piece 22 connected to the two opposing sides of the upper bottom plate 21 via the folding part 4 is folded down, so that the folding piece 22 and the folded piece 10 are overlapped with each other. Are superimposed on the upper bottom plate 21. The sub-blank C is attached from the opposite direction to the sub-blank B inserted in the opening 8 in this manner, the upper bottom plate 21 is positioned at the upper end of the upper-bottom forming opening 15, and the folded-up piece 10 is A storage recess 23 having a step in the depth from the opening 8 in the insertion direction of the sub-blank B is formed in a state where the folding piece 22 overlaps the folding piece 22. The storage recess 23 formed as described above
Of the side plates 12, 13 are respectively
Is lower than the upper end position (the position of the folding section 4).
Is slightly inclined so as to be located at the center side of the concave portion, whereby the shape of the inner peripheral surface 19 of the concave portion of the storage concave portion 23 is formed to be inclined so as to become narrower from the opening 8 to the bottom plate 11 side. In addition, in each of the folded pieces 22 that are continuous with the upper bottom plate 21, the upper ends thereof are inclined such that the upper ends thereof are located closer to the center side of the upper bottom plate 21 than the folding positions at the ends.
Folding piece 10 overlapping this inclined folding piece 22
Are also inclined. As described above, the storage space formed by the storage recesses 23 has a shape that is open upward, and when the storage recesses 23 of the two paperboard buffer bodies 1 are positioned up and down, the upper storage recess 23 is formed. The convex portion can enter the lower storage recess 23 through the opening 8. As described above, since the side plate 5 forming the outer peripheral surface of the paperboard buffer 1 is inclined and the shape of the buffer outer peripheral surface 7 is open at the bottom, a plurality of paperboard buffers are provided. When the bodies 1 are aligned and stacked, stacking is performed so that the top board 3 side of the lower paperboard buffer 1 enters the space below the top board 3 to stabilize the stacked state, and a plurality of stacked paperboard buffers are stacked. The space that is occupied is reduced. In the sub-blank C, as shown in FIG.
And a separated face plate 25 which is separable and continuous at the tip of the bent piece 24. Then, the separation face plate 25 is separated from the folded-up piece 24 at the time of the breath processing involving the assembling of the blanks B, A, and C. The folded up piece 24 is folded up,
Further, while the tip 26 is bent, the bonding portion 1
6, is bonded to the surface on the opposite side to the glue margin piece 14,
Even on the other separation face plate 25, both sides are folded up so that the center is at the lower position, and the front end portions 27 on both sides are bent along the short-side folded portion 4 of the top face plate 3. Is joined at the position. As shown in FIG. 8, the separation face plate 25 is provided with the folded portion 4 on the short side of the top face plate 3.
Side plate 5 and side plate 13 of sub-blank B
The central portion of the separation surface plate 25 abuts against the side plate 5 and the side plate 13 to constitute a fall prevention means 28 for suppressing the side plate 5 from falling. Further, a protruding piece 29 is also extended to the base end portion of each of the folded pieces 24 to form a fall-in prevention means 28, and a folding position is set at a central position along the protruding direction. 9 and FIG. 10.
As shown in the figure, the tip of the overhanging piece 29 in a state of being bent into a substantially L-shaped section is in contact with the side plate 5. Since the tip of the overhanging piece 29 is in contact with the side plate 5 as described above, the side plate 5 is supported by the overhanging piece 29 even when a force that pushes the side plate 5 toward the storage recess is applied. 5
To prevent falling. And the overhanging piece 29
Also, by bending the position along the overhanging direction as the folding position, the cross-sectional shape in a plane orthogonal to the direction of receiving the force of the side plate 5 becomes substantially L-shaped, and therefore the strength of the overhanging piece 29 itself. So that the side plate 5 is securely supported without being shaken. In the sub blank C, the position where the tip of the folded piece 10 of the upper bottom plate 21 overlaps, the position where the tip of the folded piece 22 is folded on the back surface of the bottom plate 11, the tip of the folded piece 4 26, the adhesive 9 is applied to the front end 27 of the separation face plate 25 in advance, and the portion where the adhesive 9 is applied is bonded to the opposing portion at the time of press working. In FIG. 1, the bonding position of the tip portion 26 is shown as 26a. As described above, according to the present invention,
The opening of the main blank, which has an opening corresponding to the stored article in the top plate serving as the cushion top surface, and which folds the side plates around the top plate and bonds the adjacent side plates together to form a buffer outer peripheral surface And a sub-blank forming a storage recess formed by a bottom plate and a side plate around the bottom plate is assembled, and a storage recess formed by recessing the recess toward the rear surface of the top plate at the opening. In the above-mentioned structure, four corners of the top plate of the main blank are cut out so that corners of the outer peripheral surface of the buffer body can be deformed. As a result, the corners of the outer peripheral surface of the cushioning body can be deformed without being restrained by the top panel, and during handling of a package or the like using the paperboard cushion, input is performed in the diagonal direction of the top panel. Even if such a shock is applied, the corners are deformed to absorb the shock, and the shock is prevented from being transmitted to the product supported by the paper-made buffer, and the function as the buffer is sufficiently performed. Thus, the present invention has excellent practical effects.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an example of a paperboard buffer 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 an expanded state. FIG. 4 is an explanatory view showing another sub blank in a developed state. FIG. 5 is an explanatory diagram showing a state in which the superposition of three blanks is separated. FIG. 6 is an explanatory view showing three assembled blanks in a separated state. FIG. 7 is an explanatory view showing deformation of a corner of the outer peripheral surface of the shock absorber. FIG. 8 is an explanatory view showing a fall prevention means. FIG. 9 is an explanatory diagram showing a cross section along the short side direction of the top plate. FIG. 10 is an explanatory diagram showing a cross section of a bonded portion. FIG. 11 is an explanatory diagram showing a conventional example. FIG. 12 is an explanatory view showing a conventional example in which a buffer outer peripheral surface is inclined. FIG. 13 is an explanatory view showing a cross section of a conventional example in which the outer peripheral surface of the shock absorber is inclined. DESCRIPTION OF SYMBOLS 1 ... paperboard buffer 2 ... storage article 3 ... top plate 3a ... notch 5 ... side plate 7 ... buffer outer peripheral surface 7a ... corner 8 ... opening 23 ... storage recess

Continuation of front page    (72) Inventor Takayuki Fukuda             1-5-1, Taito, Taito-ku, Tokyo             Inside printing company (72) Inventor Shizuo Sato             1608-11 Higashi Hongo, Kawaguchi City, Saitama Prefecture F-term (reference) 3E060 CC12 CC19 CC52 CC70 DA07                       DA23 DA30 EA06 EA16 EA17                 3E066 AA03 BA05 CA03 GA20 JA01                       KA20

Claims (1)

Claims: 1. A cushioning plate having an opening corresponding to a storage article in a top plate serving as a cushion top surface, folding a side plate around the top plate and bonding adjacent side plates to each other. At the opening of the main blank forming the outer peripheral surface of the body, a sub-blank forming a storage recess formed of a bottom plate and a side plate around the bottom plate is assembled, and the opening is recessed in the direction of the back surface of the top plate. A paperboard buffer body in which a storage recess is located, wherein a corner of the outer peripheral surface of the buffer body is deformable by cutting out a square of the top plate of the main blank.