JPH0429839A - Manufacture of panel having curved end part - Google Patents

Abstract

PURPOSE:To obtain a panel having curved end part which exhibits excellent appearance of design and is made by a simple processing and manufacturing process and exhibits good accuracy by a method wherein the inside of an end part of one face of surface and rear face decorative panels of a panel is processed into teeth of a comb and a curved face of the teeth of the comb and a heat-resistant resin is cast between a cut face of the end edge of the panel and the face of the teeth of the comb facing thereto. CONSTITUTION:Decorative sheets 2 are provided on the surface and the rear face of a panel base material 1. Then, while one of the decorative sheets 2 is left on one face side of an end part of the panel, the panel base material 1 is processed into teeth of a comb by means of a molder to from a plurality of teeth of a comb-like projections 3. The end part of the decorative sheet 2 is bent in such a away that adjoining oblique faces 5 each other of the teeth of the comb-like projections 3 are adhered each other to form a curved face 6 of the end part. Then, this gap 7 is cast with a heat-resistant resin 8 such as nylon resin to adhere and fix the teeth of the comb-like projections 3 and the cut face 6 of the end edge of the panel base material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of manufacturing a curved end panel. More specifically, the present invention relates to a method of manufacturing a curved end panel that can easily form a curved surface with an excellent appearance and design on the end edge of the decorative panel.

(Prior Art) Panels with decorative laminates have been widely used as interior materials, exterior door materials, indoor partitions, etc., and some of these panels have curved edges. It is also becoming popular.

For curved edge panels with curved edges,
For example, it can be manufactured by bonding a curved edge material to the end face of a panel base material, and this method is widely known as the simplest method. However, when using this method to manufacture a panel with decorative laminate on one or both sides, the decorative surface of the panel surface and the curved edge portion become discontinuous, resulting in an unfavorable appearance and design. Ta.

Therefore, in order to solve this problem, various efforts have been made to create a continuous design between the decorative surface and the curved end surface, and methods of manufacturing panels based on these efforts have also been proposed. For example, as illustrated in FIG. 4, first, in a panel in which a decorative laminate (b) is adhered to the surface of a panel base material (a), a joint part (
A notch groove (machining) is formed by leaving the notch groove (1).
) A comb-tooth-like protrusion (O) is formed by cutting on the inside of the comb-teeth-like protrusion (O).Next, the space between the comb-teeth-like protrusions (O) and the notch groove (1) is filled with resin (force) such as adhesive. In this state, the surface decorative board (A) is bent in the direction of the arrow (A) in the figure, and the joint part (X) and the notch surface (G) of the panel base material (A) are joined using an adhesive.

In this way, it is possible to obtain a curved end surface (ri) with a design that is continuous with the decorative surface board (a).

Also, by the same method, as illustrated in FIG. 5, a panel base material (A) with a decorative board (A) attached to one side
A double-sided decorative laminate panel with a comb-like protrusion (O) formed in the center of the panel, then bent 180° while filled with a resin (force) such as an adhesive, and having a semicircular end curved surface (Ri). can be manufactured.

(Problem to be Solved by the Invention) However, in the case of these conventional methods for forming curved surfaces at the end of the panel, adhesive or other resin (force) is applied between the comb-like protrusions (E) and the notch grooves (1). may not be completely filled, and as the resin (force) such as adhesive hardens, the edges may become curved.
The decorative board (a) had the disadvantage that unevenness and cracks were likely to occur on the surface. Therefore, it has been proposed to solve the above-mentioned problems by using a foamable resin adhesive such as urethane-based adhesive as the adhesive and completely filling the gap by foaming after filling.

Although improvements were certainly seen with this method, since the adhesive is in a sealed state, it is not always clear whether the filling is sufficient, and in reality, it is still
The reality is that the above drawbacks have not been completely eliminated. Moreover, the processing process was also troublesome.

Furthermore, in these conventional methods, one of the important requirements is to prevent the resin (force) such as adhesive and its joints from being exposed on the surface of the panel.
This has also been a major cause of limiting the appearance and design of the panel. That is, for example, in the example shown in Fig. 4, by providing the joint part (X), the comb tooth-like protrusion (O) in the notch groove (1) and the resin (force) such as the adhesive filled therein can be reduced. However, because of this, in this panel, the decorative surface by the decorative board (a) is limited to only the panel surface and the curved end surface (ri). In addition, in the example shown in Fig. 5, the front and back surfaces and the curved end surfaces (ri) are decorated with a continuous decorative board (A), but in the case of this panel,
A disadvantage is that it is impossible to form such an end curve on both end edges.

As described above, in the case of conventional manufacturing methods for curved edge panels, there are restrictions on the shape and design of the panels that can be manufactured, and even if foam adhesives are used,
The filling was not necessarily uniform and sufficient, and the processing process was troublesome in that the adhesive was filled in advance and then the curved surface was formed, requiring a lot of time and effort.

This invention was made in view of the above circumstances, and aims to overcome the drawbacks of the conventional manufacturing method of curved end panels,
It has excellent appearance design, and the processing and manufacturing process is simple.
The purpose of this invention is to provide a new manufacturing method for curved end panels with good precision.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a comb-like finish on the inside of one side edge of the panel front and back decorative laminates, and bends the comb-like surface to form a panel end edge. Provided is a method for producing a curved end panel, characterized in that a curved surface is formed on the end surface of the panel, and a heat-resistant resin is injected between the butt end surface of the panel edge and the comb tooth surface facing thereto.

Further, the method of the present invention has a preferred embodiment in which nylon resin is injected as the heat-resistant resin.

(Function) In the method of the present invention, the resin is injected between the panel edge end surface and the comb tooth surface opposite thereto, without filling and sealing with resin such as adhesive as in the conventional method. This resin injection can be carried out sufficiently, there is no unevenness or cracking of the curved end surface, and the processing for this purpose is simple and easy.

By disposing decorative boards on the front and back surfaces and partially exposing the injected resin, this can be used as a design.

Of course, it is also possible to form curved surfaces on both ends of the panel.

(Example) Hereinafter, the method for manufacturing a curved edge panel of the present invention will be described in more detail with reference to the attached drawings.

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the manufacturing method of the present invention.

For example, as shown in FIG. 1, in the manufacturing method of the present invention, (a) First, decorative laminates (2) are provided on the front and back surfaces of the panel base material (1).

(b) Next, one decorative board (2
), the panel base material (1) is comb-shaped using a molder or the like to form a plurality of comb-shaped protrusions (3). At this time, the height (H) of the comb-teeth-like protrusions (3) in (c) and (d) is set to 1/2 of the thickness (T) of the panel base material, and the comb-teeth-like protrusions (3) A gap (,ll) is provided between the edge end face (4) of the panel base material (1) facing the panel base material (1).

The end of the decorative board (2) is bent in the direction of the arrow in the figure so that the adjacent slopes (5) of the comb teeth (3) are in close contact with each other to form a curved end surface (6). At this time, a gap is created between the comb-teeth-like projection (3) and the end edge surface (4).

Next, a heat-resistant resin (8) such as nylon resin is injected into this gap, and the comb-like protrusions (3) and the end edge surface (6) of the panel base material (1) are bonded and fixed. do. In this way, the end curved surface (6) is completed as a predetermined shape.

By bringing the respective comb-like protrusions (3) into close contact with each other at their slopes (5), the internal structural strength of the end curved surface (6) can be further improved. In this case, there is no need to fill the spaces between the comb teeth (3) with adhesive in advance.

Further, as is clear from FIG. 1, in the manufacturing method of the present invention, the heat-resistant resin (8) is exposed on the surface of the injection part. However, by using materials such as nylon resin, which are excellent in terms of strength, adhesion, color tone, and gloss, as heat-resistant resins,
Compared to the case of using conventional adhesives such as foamable adhesives, its physical properties and design properties are much improved, and it can be used as a decoration for panel surfaces. Therefore, by exposing the heat-resistant resin (8) as a decorative panel joint, the appearance and design of the panel can be further improved.

FIG. 2 is a cross-sectional view of the main parts of another embodiment of the present invention.

In this example, the cross section of the panel is a trapezoidal comb-shaped protrusion (13
), and while the slopes (5) of these trapezoidal comb-like protrusions (13) are in close contact with each other, a gap is formed between this protrusion (13) and the end edge surface (4). Heat-resistant resin (8) is injected into (ri). In this case, the bonding force of the trapezoidal comb-like protrusions (13) becomes stronger.

The structure shown in Figure 1 or Figure 2 is selected depending on the thickness (T) of the panel base material (1), the height (H) of the comb teeth (3) (13), and their pitch. be able to.

In either case, the structure is strong.

FIG. 3 is a perspective view showing an example of the entire process of manufacturing a panel using the method illustrated in FIG. 1.

For example, as illustrated in FIG.
31) Sizing. Next, the edge of one side of the long side (31) of the panel base material (1) is cut using a molder to form comb-like protrusions.

The comb-like projections (3) are bent inward, and a heat-resistant resin (8) such as nylon resin is injected to form a curved end surface (6).

Next, the short side (32) of this panel is sized, an edge material (33) is adhered to this short side (32), and finally both ends of the edge material (33) are trimmed into a curved shape. In this way, the curved end decorative panel (34) is completed.

Of course, the present invention is not limited to the above examples, and it goes without saying that various embodiments are possible with respect to details such as the method of processing the comb teeth, the shape and size of the protrusions, and the injected resin.

(Effects of the Invention) As described above in detail, according to the present invention, it is possible to simply and easily produce a curved end panel with excellent external design. In addition, the appearance design is also good.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the manufacturing method of the present invention. FIG. 2 is a cross-sectional view of the main parts of another embodiment of the present invention. FIG. 3 is a perspective view showing an example of the entire manufacturing process of a panel using the method illustrated in FIG. 1. FIG. 4 and FIG. 5 are process cross-sectional views showing the comb-teeth processing and curved surface forming method of the panel end in a conventional example. 1... Panel base material 2... Decorative board 3... Comb-shaped protrusions 4... Edge end face 5... Slope 6... End curved surface 7... Gap 8...・Heat-resistant resin 13...Comb tooth-like projections 31...Long side 32...Short side 33...Edge material 34...Panel agent Patent attorney Toshio Nishizawa Figure

Claims (2)

[Claims] (1) The inside of the edge of one side of the panel front and back decorative boards is comb-shaped, and the comb-shaped surface is bent to form a curved surface at the edge of the panel.
A method for producing a curved end panel, characterized by injecting a heat-resistant resin between a panel edge end face and a comb tooth face facing thereto. (2) The method for manufacturing a curved end panel according to claim (1), wherein a nylon resin is injected as the heat-resistant resin.