JPH0630075U - Laminated corrugated cushioning material - Google Patents

Abstract

(57) [Summary] [Purpose] Made of laminated corrugated cardboard that has excellent strength, can support stacking loads, and can also be a reliable angle-shaped cushioning material with excellent adhesion to items to be packed. The purpose is to provide a cushioning material. At least one corrugated cardboard sheet in which an outer surface paper is adhered to at least one surface of a core paper having a corrugated cross section is formed.
A cushioning material made of laminated corrugated board characterized in that a plurality of thick board materials are laminated on both sides or one side and bonded to each other with an adhesive.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cardboard cushioning material formed by stacking cardboard sheets in multiple layers.

[0002]

[Prior art]

 For example, when packing electrical products such as refrigerators and coolers, and various items to be packaged such as synthetic resin molded products, polystyrene foam, polyethylene foam, or polystyrene foam should be placed between the items to be packaged and the outer case that covers them from the outside. A cushioning material such as urethane foam is inserted to protect the items to be packed inside against external force. They have good cushioning properties, have an excellent function to protect the products inside from external impacts, and are lightweight, so they are easy to handle and easy to mold. However, since this cushioning material is a petroleum product, it does not corrode even if left unattended, and when burned, it produces a large amount of black smoke and emits a strange odor, so it is discarded or incinerated after being used as a packaging material. Disposal is a problem. In particular, under the situation where there is a demand to protect the global environment, it is becoming the situation that the company that shipped the product must take responsibility for collecting or processing the cushioning material.

Further, as one of the conventional paper cushioning materials, as shown in FIG. 7, a corrugated cardboard in which an outer surface paper 2 is bonded to both sides of a core paper 1 having a corrugated cross section by an adhesive S There is a flat cushioning material 3 formed by bonding a plurality of sheets d to each other with an adhesive. The flat cushioning material 3 has a cushioning function by being inserted between the flat side surface or the upper and lower flat surfaces of the object to be packaged and the outer case. For example, when an external force such as a concentrated load is applied, the external paper 2 once receives this external force and disperses it into a distributed load, and then the peaks of the corrugated core paper 1 are crushed by this distributed load, Is designed to exert a buffer property. When a plurality of corrugated cardboard sheets d are laminated, one having a higher cushioning function can be obtained.

Further, as another conventional cushioning material, there is an angle-shaped cushioning material that protects the corners of the article to be packed. As shown in FIG. 8, the angle-shaped cushioning material 4 is formed by stacking a large number of strip-shaped papers 5 to form a pair of cardboards 6 and 7 having a V-shape in advance. By joining the portions 6a and 7a to the ends of the cardboards 6 and 7 with an adhesive S, an L-shaped hollow portion 8 is formed inside. When an external force such as a concentrated load acts on the cushioning material 4, the cardboard 6, 7 itself having a relatively strong strength against the external force is deformed, and this deformation is released to the hollow portion 8 to absorb the external force. However, it is designed to exert a cushioning function.

All of these have good cushioning properties, have an excellent function of protecting internal products against external impacts, are lightweight and have good handleability, and are easy to be post-processed, for example, incinerated. Therefore, it has been used a lot recently.

[0006]

[Problems to be solved by the device]

 However, since the former flat cushioning material 3 does not have sufficient strength, there is a possibility that the material may break, deform, or perforate when used for packaging heavy goods.

When the core paper 1 has insufficient strength in the ridgeline direction of the corrugations, that is, in the direction perpendicular to the paper surface, and is inserted between the object to be packaged and the outer case, it is stacked in the ridgeline direction of the corrugations. When a load is applied, the flat cushioning material 3 may be deformed, and there is a problem that some means for supporting this stacking load is required.

Further, the latter angle-shaped cushioning material 4 has to be formed by laminating a large number of strip-shaped papers, which is troublesome to manufacture and has a problem of high cost. In order to eliminate such a problem, it is conceivable that the single-faced corrugated cardboard sheet d itself is wound multiple times to form an L-shaped shock-absorbing material, but in this case. If the object to be packed is angular, the corners do not form an accurate right angle, the cushioning material does not adhere to the corners, and a gap is created, which may result in lack of protection of the object to be packed.

The present invention has been made to solve such a problem, and is excellent in strength, capable of supporting a load for stacking, and excellent in adhesion with an object to be packed or the like. It is an object of the present invention to provide a laminated corrugated cardboard cushioning material that can be used as an angled cushioning material.

[0010]

[Means for Solving the Problems]

 The present invention for achieving the above object is to laminate a plurality of corrugated cardboard sheets, which are obtained by adhering an outer surface paper on at least one side of a core paper having a corrugated cross section, on both sides or one side of at least one thick plate material. However, it is a cushioning material made of multi-layered balls, which is bonded to each other with an adhesive.

Further, the present invention is to laminate a plurality of corrugated cardboard sheets, which are obtained by adhering an outer surface paper on at least one side of a core paper having a corrugated cross-section, on both sides or one side of at least one thick plate material, and mutually mutually. A cushioning material made of laminated corrugated cardboard that is joined with an adhesive, forming a V-shaped groove by cutting it into a V-shape leaving the outermost paper located at the outermost part, and the inner surfaces of the V-shaped groove are mutually bonded by an adhesive agent. It is a cushioning material made of laminated corrugated board characterized by being formed into an angle material, a channel material, or a polygonal cross section by being joined by.

[0012]

[Action]

 According to the present invention, since the thick plate material and the corrugated cardboard sheet are joined together, the thick plate material serves as a reinforcing material and has sufficient strength in the longitudinal direction or the axial direction. Even when loaded, the plate load can support this loading load. In addition, if a V-shaped groove is formed in a cushioning material obtained by joining a thick plate material and a corrugated board sheet and the inner surfaces of the V-shaped groove are joined together, a laminated board corrugated cushioning material can be formed by the thick plate material and the corrugated board sheet. It is possible to form a cushioning material that is economically advantageous. In particular, if V-shaped grooves are formed in the corrugated board sheet laminate and joined together, not only the corners on the inner surface side but also the corners on the outer surface side will surely come into close contact with the object to be packed and the outer case. , The protection of the packaged goods is perfect. If the ridgeline of the corrugated corrugated core paper of the corrugated cardboard sheet matches the direction in which the load acts, not only does the strength of the corrugated core paper with respect to the load increase, but a structure in which the thick plate material reinforces this strength. Therefore, depending on the mode of use of the cushioning material, the support such as the stacking load will be excellent. Moreover, after using such a cushioning material, if the packaging is unpacked and the cushioning material is disposed of, it can be easily processed by burning or the like, and can be recycled as a raw material for recycled paper.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of another embodiment of the present invention, and FIGS. 3 and 4 are still further embodiments of the present invention. Fig. 5 is a cross-sectional view of the main parts showing the manufacturing process of the angle-shaped cushioning material, Fig. 5 is a perspective view of the finished product of the same angle-shaped cushioning material, and Fig. 6 is a cross-sectional view of the main parts showing another embodiment of the present invention. Is. The same members as those shown in FIGS. 7 and 8 are designated by the same reference numerals.

For example, as shown in FIG. 1, the corrugated cardboard sheet d is a corrugated core paper 1 having an outer surface paper 2, for example, a liner paper adhered to both surfaces thereof. The corrugated cardboard sheet d does not necessarily have the outer paper 2 adhered to both sides of the core paper 1, and is used as a cushioning material used when packaging a relatively light load. In this case, as shown in FIG. 2, the outer paper 2 may be bonded to only one surface of the core paper 1.

In this embodiment shown in FIG. 1, the corrugated cardboard sheets d are first stacked in two layers and bonded to each other with an adhesive. Here, as the adhesive, for example, a vinyl acetate-based adhesive is preferably used, but the present invention is not limited to this. Next, one thick plate material 10 is placed on the two corrugated cardboard sheets d and bonded with an adhesive. Here, as the thick plate material 10, recycled paper of 1 to 3 mm is preferably used, but the present invention is not limited to this. Further, the corrugated cardboard sheet d is placed and joined on the thick plate material 10 in two layers joined by an adhesive to form the whole. The laminated corrugated cardboard cushioning material 11 thus formed is, for example, an electric product such as a refrigerator or a cooler, an article to be packaged such as various synthetic resin molded products, and an exterior made of corrugated cardboard paper. Inserted between the case and.

It is assumed that an external force is applied for some reason after the packaging is completed. For example, when a concentrated external force is applied, the external force deforms the outer case and is transmitted to the laminated corrugated cardboard cushioning material 11. However, in the cushioning material 11 made of laminated corrugated board, this external force is once received by the outer paper 2 and converted into a distributed load, and then the outermost corrugated core paper 1 is crushed by the distributed distributed load. . When the external force is large, the outermost corrugated cardboard sheet d alone cannot support the external force, and the corrugated cardboard sheet d inside thereof is crushed. A similar cushioning function is also performed on the inner corrugated board sheet d. When the external force is even greater and cannot be supported by only the second corrugated board sheet d, the thick plate material 10 opposes this external force. Since this plank 10 has a considerable strength, most external forces are blocked here.

On the other hand, when the package is tilted or laid sideways during transportation, the load of the packaged product acts on the laminated corrugated cardboard cushioning material 11, and this load is applied to the inside of the thick plate material 10. The corrugated cardboard sheet d is supported in the same manner as in the above case. In this way, the laminated corrugated cardboard cushioning material 11 opposes an external force or a force acting from the inside and exerts a large cushioning ability. In particular, when the cushioning material 11 made of laminated corrugated board is provided over the entire length in the vertical direction in the outer case, when stacking the packed items after packing, the stacking load should also be supported by the thick plate material 10. Therefore, it is not necessary to provide a separate means for supporting the load.

The laminated corrugated cardboard cushioning material 11 can simply form an angled cushioning material by forming a V-shaped groove in a part thereof. That is, in FIGS. 3 and 4, the angled cushioning material 20 has a predetermined position (for example, the center) with only one outer paper sheet 2 at the outermost portion (the lowermost portion in the case shown) of the laminated corrugated cardboard cushioning material 11 left. It can be formed by forming a V-shaped groove 21 having a predetermined central angle θ (usually 90 degrees) in a portion) and joining the inner surfaces of the V-shaped groove 21 with an adhesive. The cutter 22 for forming the V-shaped groove 21 is arranged by displacing the sharp blades 22a and 22b, which are respectively inclined at 45 degrees with respect to the center line 23, upward and downward with respect to the paper surface so as not to interfere with each other. is doing. Then, the motor M is rotated, and the laminated corrugated cardboard cushioning material 11 is cut by each of the blades 22a and 22b to form the V-shaped groove 21. The adhesive applied to the inner surface of the V-shaped groove 9 is performed by using a pair of adhesive applying rollers (not shown). In this case as well, both adhesive application rolls are arranged so as not to interfere with each other. The laminated corrugated cardboard cushioning material 11 thus coated with the adhesive S on the inner surface of the V-shaped groove 21 is bent, the inner surfaces of the V-shaped groove 9 are joined to each other, and bent at a right angle as shown in FIG. The angled cushioning material 20 is formed.

The angled cushioning material 20 made of laminated corrugated cardboard is used, for example, in the case of packing an object to be packed whose corners are 90 degrees, such as an electric refrigerator, when it is used as a corner of the object to be packed. It is tightly inserted between the corners of the outer case, and the shock absorbing function that acts on the corners from the outside is improved, and the corners of the packaged object inside are reliably protected. In particular, in this corrugated cardboard cushioning material, if the corrugated ridgeline of the core paper 1 matches the direction in which the load acts, the support capacity for the stacking load is significantly improved over the laminated corrugated cushioning material 11. It will be.

It should be noted that the above description is one embodiment of the present invention, and the present invention can be variously modified without departing from the gist described in the scope of the utility model registration request. For example, in the above embodiment, the corrugated cardboard angled cushioning material is formed into a substantially right angle L-shape, but by changing the central angle θ of the V-shaped groove 21 appropriately, the cross-sectional shape may be acute or obtuse. Can be formed. The number of the corrugated cardboard sheets d to be laminated is appropriately 3 to 5, but the number may be appropriately increased in order to improve the cushioning property.

Further, as shown in FIG. 6, a corrugated board cushioning material 30 in which a plurality of corrugated board sheets d are laminated on one surface of a thick plate material 10 may be used, and the above V-shaped groove 21 is formed in the corrugated board cushioning material 30. However, an angled cushioning material may be used. Further, when it is necessary to prevent the permeation of water or air, aluminum foil or the like may be attached to one side or both sides of the thick plate member 10.

[0022]

[Effect of device]

 As described above, according to the present invention, since the laminated corrugated board cushioning material joins the thick plate material and the corrugated ball sheet, the thick plate material serves as a reinforcing material and the ability to withstand the load of stacking is improved. . Also, if the V-shaped groove is formed in the cushioning material that joins the thick plate material and the corrugated cardboard sheet and the angle-shaped cushioning material is formed by joining the inner surface of this V-shaped groove, the corners of the packaged object are completely protected. It is also advantageous in terms of cost. Furthermore, by attaching corrugated cardboard sheets to the inside and outside of the thick plate material, it is possible to reliably protect the object to be packed against not only the force applied from the outside but also the force applied from inside. In addition, it is possible to easily dispose of the cushioning material even after using this cushioning material.

[Submission date] April 16, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

Further, as shown in FIG. 6, a corrugated board cushioning material 30 in which a plurality of corrugated board sheets d are laminated on one surface of a thick plate material 10 may be used, and the above V-shaped groove 21 is formed in the corrugated board cushioning material 30. However, an angled cushioning material may be used. Further, when it is necessary to prevent the permeation of water or air, aluminum foil or the like may be attached to one side or both sides of the thick plate member 10. Previous embodiment, the ridges of the corrugating medium 1 waveform, although the upper and lower corrugated sheet d smell Te are stacked so as to be parallel respectively, the present invention is not only this, the ridge line vertically corrugated intersect in the sheet d, but it may also as a so-called cross-paste. If it does in this way, it will become excellent in intensity.

[Submission date] May 14, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

Further, as shown in FIG. 6, a corrugated board cushioning material 30 in which a plurality of corrugated board sheets d are laminated on one surface of a thick plate material 10 may be used, and the above V-shaped groove 21 is formed in the corrugated board cushioning material 30. However, an angled cushioning material may be used. Further, when it is necessary to prevent the permeation of water or air, aluminum foil or the like may be attached to one side or both sides of the thick plate member 10. Previous embodiment, the ridges of the corrugating medium 1 waveform, although the upper and lower corrugated sheet d smell Te are stacked so as to be parallel respectively, the present invention is not only this, the ridge line vertically corrugated intersect in the sheet d, but it may also as a so-called cross-paste. If it does in this way, it will become excellent in intensity.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention,

FIG. 2 is a sectional view of a main part showing another embodiment of the present invention,

FIG. 3 is a cross-sectional view of a main part showing still another embodiment of the present invention,

FIG. 4 is a sectional view of a main part showing the same angle-shaped cushioning material,

FIG. 5 is a perspective view of a finished product of the same angle-shaped cushioning material,

FIG. 6 is a cross-sectional view of an essential part showing another embodiment of the present invention,

FIG. 7 is a sectional view of a main part of a conventional cardboard cushioning material,

FIG. 8 is a schematic perspective view showing a conventional cardboard hollow angled cushioning material.

[Explanation of symbols]

1 ... Core paper, 2 ... Exterior paper, 10 ... Thick plate material, 21 ... V-shaped groove, d ... Corrugated cardboard sheet, S ... Adhesive.

Claims (2)

[Scope of utility model registration request] 1. A corrugated cardboard sheet (d) comprising an outer paper (2) adhered to at least one surface of a core paper (1) having a corrugated cross section.
A laminated cushioning material made of laminated corrugated board, wherein a plurality of sheets are laminated on both sides or one side of at least one thick plate material (10), and they are bonded to each other with an adhesive (S). 2. A corrugated cardboard sheet (d) comprising an outer paper (2) adhered to at least one surface of a core paper (1) having a corrugated cross section.
Is a laminated corrugated cardboard cushioning material in which a plurality of sheets are laminated on both sides or one side of at least one thick plate material (10) and are bonded to each other by an adhesive (S), and the outermost paper (2) is located at the outermost position. To form a V-shaped groove (21) by cutting it into a V-shape, and the inner surfaces of the V-shaped groove (21) are bonded to each other with an adhesive (S) to form an angle material, a channel material, or a cross section. A cushioning material made of laminated corrugated board characterized by being formed in a polygonal shape.