JPH07279305A - Panel of corrugated board structure and manufacture of panel - Google Patents

Abstract

PURPOSE:To heighten the bonding strength of a core with a facial plate, manufacture a panel of corrugated cardboard structure effectively, and enhance the anti-corrosiveness and durability of the panel in which the base material of the core is laminated with resin film. CONSTITUTION:Thermoplastic resin films 7 are laminated on both surfaces of a base 6 made of a metal so that a laminate board is formed, which is undulated to form a core 1, and laminate plates are attached to both surfaces of the core 1, and thus a facial plate 3 is accomplished from the core 1 and laminate plates. They are joined together by thermal fusion of the films 7, 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated board panel and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, corrugated board panels have been used as interior and exterior materials for buildings and vehicles and various structural materials. This product has a structure in which an exterior plate or a surface plate also made of a metal plate or the like is bonded to both surfaces of a core material obtained by bending a metal plate into a corrugated plate with an adhesive (for example, Japanese Patent Laid-Open No. 3-414412). , Jitsukai Sho 56-958
28, Japanese Utility Model Laid-Open No. 62-173495, etc.). These corrugated cardboard panels are lighter in weight and have better heat insulation properties than Muku materials.

[0003]

The conventional corrugated board structure panel has problems in that it takes time and effort to bond the corrugated plate-like core member and the surface plate, and the bonding strength is low. An object of the present invention is to provide a panel having a corrugated board structure which is easy to manufacture and has high bonding strength.

[0004]

A corrugated board panel according to the present invention comprises a corrugated plate-shaped core material made of a laminated plate in which a thermoplastic resin film is laminated on both sides of a metal base material.
It is characterized in that it is composed of surface plates bonded to both surfaces thereof, and that the peaks and valleys of the core material and the surface plate are bonded by heat fusion of the thermoplastic resin film.
In such a panel, at least one of the surface plates is a laminated plate in which a thermoplastic resin film is laminated on one surface of a base material, and the surface plate and the core are
It is preferable that the thermoplastic resin films are joined by heat fusion. Further, as the core material, it is preferable to employ a core material having a polygonal cross-sectional shape in which rectangles or trapezoids are continuously continuous in opposite directions. Further, the core material may be provided in two or more stages.

According to the method for producing a corrugated board panel of the present invention, a core material is manufactured by forming a corrugated plate by laminating a laminated plate in which a thermoplastic resin film is laminated on both sides of a metal base material, and then manufacturing the core material on both sides. It is characterized by placing a surface plate on and heating the whole while pinching the three. In that case, a laminate plate in which a thermoplastic resin film is laminated on one surface of the base material is adopted as the surface plate, and the surface plate is arranged so that the film becomes the inner surface, and the whole is heated while pressing the three members. Is preferred.

[0006]

In the corrugated board panel of the present invention, the corrugated core material is composed of a metal plate laminated with a thermoplastic resin film. Therefore, the surface plate, the core material, and the surface plate are stacked in this order, and the load is applied to them. When the whole is heated while being heated, the thermoplastic resin film on the surface of the core material is melted or softened, and when it is further cooled, the core material and the surface plate are joined via the film. Therefore, the work is significantly easier than the case of joining with an adhesive, and automation is also easy. Further, the bonding strength is remarkably improved as compared with the case of bonding with an adhesive. Furthermore, since the assembly work and the joining work are separate,
At the time of assembly, the positional relationship between the core material and the surface plate can be easily corrected, and therefore the overall combination accuracy is high. Furthermore, since the core material is laminated with a resin film,
High durability. When using a laminated plate for the surface plate,
Since the film of the surface plate and the film of the core material are joined,
Bonding strength is further increased.

The above-described action of improving the joint strength and simplifying the manufacturing process is more effectively exerted in the case of a panel in which a plurality of core materials are superposed. In that case, a plurality of core materials are all formed in the same shape, and by alternately stacking the core materials one by one in an opposite direction, the peaks and valleys of the core material contacting vertically are brought into contact with each other. Easy to assemble.

According to the method of manufacturing a corrugated board panel of the present invention, since the assembly process and the joining process are separate, the assembly process is particularly simple, and the assembly precision is high, so that the panel can be easily and accurately manufactured. Can be manufactured well. When using multiple cores, by aligning both edges with a guide and stacking them one by one in an opposite direction, the peaks and valleys of the cores that touch vertically are brought into contact with each other. Easy to assemble.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A corrugated board panel according to the present invention and a method for manufacturing the same will now be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing an embodiment of a corrugated board panel according to the present invention, FIGS. 2a and 2b are a partially enlarged front view and a P section enlarged sectional view of the panel of FIG. 1, respectively. FIG. 4 is a main part process chart showing an embodiment of a method for manufacturing the panel of FIG.
5 is a front view of a main part of another embodiment of the corrugated board panel according to the present invention, and FIG. 6 is a partially cutaway perspective view showing yet another embodiment of the corrugated board panel according to the present invention.

The panel A of FIG. 1 has a corrugated board structure composed of a corrugated plate-like core material 1 and surface plates 2 and 3 joined to the front side and the back side thereof, respectively. That is, FIG.
As shown in a, the core material 1 has a cross-sectional shape of continuous curved lines or wavy lines that are alternately folded back at approximately the same pitch, and the surface plates 2 and 3 contact the peaks 4 and valleys 5 thereof, It is joined. As shown in FIG. 2b, the core material 1 is a metallic base material 6
And a laminated metal plate composed of the thermoplastic resin films 7 and 7 laminated on both sides of the base material 6,
It is a corrugated plate, and the surface plates 2 and 3 and the core material 1 are joined by fusion bonding of the thermoplastic resin films 7 and 7.

As the base material 6, a steel plate such as a cold-rolled steel plate, a surface-treated steel plate whose surface is subjected to various surface treatments such as galvanization to improve durability, a light metal plate such as an aluminum alloy, and the like, Various metal plates can be adopted. On the other hand, as the thermoplastic resin, polyethylene, polypropylene, ethylene-propylene copolymer,
Ethylene-vinyl acetate copolymer, ethylene-acrylic ester copolymer, olefin resin such as ionomer, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyester such as ethylene terephthalate / isophthalate copolymer, nylon 6, nylon Examples thereof include polyamide resins such as 6.6, nylon 11 and nylon 12, and polyvinyl chloride and polyvinylidene chloride. The film made of these resins may be uniaxially or biaxially stretched or unstretched. The resin film may be joined to the metal plate by any of heat fusion, adhesion using an adhesive, and heat fusion through a low melting point thermoplastic resin film.

The surface plates 2 and 3 may be metal plates such as steel plates and aluminum plates, and may be various boards such as paper, wood and gypsum. That is, if strength is required, a steel plate may be adopted and aluminum may be selected for weight reduction, and the selection may be made according to the application of the panel.
In any case, if a thermoplastic resin film similar to that used for the core material 1 is laminated on one surface of the surface plates 2 and 3, the core material 1 and the surface plates 2 and 3 are heat-sealed. This has the advantage of increasing the bonding strength.

Next, a method of manufacturing the panel A having a corrugated board structure constructed as described above will be described. First, a thermoplastic resin film is laminated on both sides of a strip-shaped metal plate with a laminating roll or the like to manufacture a laminated metal plate. Then, the laminated metal plate is cut into a predetermined size and bent into a corrugated plate by a press or the like to manufacture the core material 1. Then, as shown in FIG. 3, on both surfaces of the core material 1,
Overlay the core material 1 and the surface plates 2 and 3 of the same size,
A load W is placed on the upper surface and heating is performed in a heating furnace F. The heating temperature is the temperature at which the thermoplastic resin film melts or softens. As the heating furnace, any of a high-frequency heating furnace, a heating furnace using energy such as electric heating or gas combustion, and the like can be adopted.

It is also possible to melt the film by applying a soldering iron or blowing hot air without using a heating furnace. In the case of placing in a heating furnace, it is possible to stack three sets of the material of the panel A in multiple stages and to join a large number of panels at one time, and to heat one or several panels continuously. You can also Further, the continuous strip-shaped laminated metal plate is formed into a corrugated plate by roll processing or the like, and the strip-shaped surface plates are sequentially stacked on both sides thereof and passed through a heating furnace to continuously form a corrugated board panel. It can also be manufactured.

In the embodiment shown in FIG. 1, the core material 1 has a gently curved curved cross-sectional shape, but as shown in FIG.
It is also possible to employ the core material 8 having a polygonal cross-sectional shape in which trapezoids are continuous. Since the peaks 4 and the troughs 5 of the core material 8 each have a constant width b, the contact area with the surface plates 2 and 3 is large. Therefore, there is an advantage that the bonding strength is further improved.

Further, as shown in FIG. 5, it is possible to stack the core materials 1 in two or more stages to form a corrugated board structure. In this product, for example, guides 9 are provided on the left and right in accordance with the lower surface plate 2, and a core material 1b having an upside down orientation is superposed on the first-stage core material 1a, and then the first stage. If the core material 1c oriented in the same direction as the eye is overlapped in the third step, the peaks 4 of the first step core material 1a and the troughs 5 of the second step core material 1b come into contact with each other, and similarly. Crest portion 4 of second-stage core material 1b and third-stage core material 1
The valley 5 of c contacts. Therefore, in that state, the upper surface plate 3 may be further stacked and heated in a heating furnace.

In panel C of FIG. 6, the core material 1 is alternated by 90 °.
They are stacked one on top of the other and are sandwiched between the surface plates 2 and 3 and joined together. This material has a small bonding area between the core materials 1 and 1, but has sufficient bonding strength, and has an advantage of high bending strength in all directions. 5 and 6
In the case of stacking the core materials in multiple stages as in the embodiment shown in (1), the effect of the present invention that the bonding strength of the core materials is high and the core materials can be bonded at once is further exerted. When the core materials are provided in multiple stages, a metal sheet or a sheet of another material may be interposed between the core materials.

In each of the above embodiments, the inside of the corrugated board panel is hollow, but a conventionally known heat insulating material or sound insulating material such as glass wool or rock wool may be filled therein. The panel of the corrugated cardboard structure of the present invention is not particularly limited in its application, and is used in various applications such as simple storage, structural materials such as shelves, interior materials for buildings and vehicles, heat insulation panels, sound insulation panels, etc. can do.

[0019]

In the panel of corrugated board structure of the present invention and the method for manufacturing the same, since the core material, the surface plate and the core materials are joined by heat fusion of the thermoplastic resin film previously laminated on the metal substrate, Since the bonding strength is high and moreover, the bonding can be carried out efficiently at one time, the production efficiency is high. Further, most of the core material except the cut end surface is laminated with a resin film, so that the core material has high corrosion resistance and durability. Further, in the corrugated board panel and the manufacturing method thereof in which a laminate board is used as the surface board, the bonding strength is higher and the durability is higher.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a corrugated board panel of the present invention.

2a and 2b are a partially enlarged front view and a P section enlarged sectional view of the panel of FIG. 1, respectively.

FIG. 3 is a process chart of a main part showing an example of a method of manufacturing the panel of FIG. 1.

FIG. 4 is a main part front view showing another embodiment of the corrugated board panel of the present invention.

FIG. 5 is a front view of essential parts showing another embodiment of the corrugated board panel of the present invention.

FIG. 6 is a partially cutaway perspective view showing still another embodiment of the corrugated board panel of the present invention.

[Explanation of symbols]

 A Corrugated board panel 1 Core material 2 Surface plate 3 Surface board 6 Base material 7 Thermoplastic resin film B Corrugated board panel C Corrugated board panel

Claims (6)

[Claims] 1. A corrugated plate-shaped core material made of a laminated plate in which a thermoplastic resin film is laminated on both surfaces of a metal base material, and a surface plate joined to both surfaces of the core material. A panel having a corrugated board structure in which a valley portion and a surface plate are joined by heat fusion of the thermoplastic resin film. 2. At least one of the surface plates is a laminate plate in which a thermoplastic resin film is laminated on one surface of a base material, and the surface plate and the ridges and valleys of the core material are thermoplastic resin films. The panel according to claim 1, wherein the panels are joined together by heat fusion. 3. The core material has a polygonal line-shaped cross-sectional shape in which rectangles or trapezoids are continuous alternately in opposite directions.
Or the panel according to 2. 4. The panel according to claim 1, 2 or 3, wherein the core material is provided in two or more stages. 5. A core material is produced by molding a laminated plate in which a thermoplastic resin film is laminated on both sides of a metal base material into a corrugated plate shape, and surface plates are arranged on both sides of the core material. A method of manufacturing a corrugated board panel that heats the entire body while pinching the three members. 6. A core material is produced by molding a laminated plate in which a thermoplastic resin film is laminated on both sides of a metal base material into a corrugated plate shape, and a thermoplastic resin film is provided on each side of the core material. A method for manufacturing a corrugated board panel in which laminated surface plates are arranged so that the film is on the inner surface, and the three parts are heated while sandwiching them.