JPS59120444A - Internal bending method for decorative material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for inward bending a post-form decorative board, and an object of the present invention is to provide a simple and reliable processing method.

As a conventional method for inwardly bending a decorative bottom frame panel, there is a method shown in FIGS. 1 and 2.

Figure 1 shows part of the corner with 11 parts (Ar/L/(curved surface)).
3) is a cross-sectional view of a product obtained by a method of laminating a decorative board (1) to a base material (2) provided with a material (2).

However, this conventional method has the trouble of having to separately round the base material, as well as the disadvantage that wrinkles tend to occur when laminating the decorative boards, and the vertical part (4
) has the disadvantage that the dimensions cannot be made too large, and furthermore, a void is likely to be formed between the decorative board and the rounded part.

Next, Figure 2 shows a decorative board (
1) are bonded together, and the synthetic resin layer (6) is completely formed in the corner gap (5). This method does not leave any voids in some corners due to the injection of synthetic resin, but wrinkles occur easily when the decorative boards are pasted together, and the dimension of the vertical 1σ part (4) cannot be made very large. The present invention aims to eliminate the drawbacks of the above-mentioned conventional methods.In summary, after adhering a decorative board to a core material, grooves are provided in the core material, and the surface of the After heating and inward bending, a fixing material is placed at the corner, and a synthetic resin is injected into the space surrounded by the decorative board, the core material, and the fixing material, and a hardening and bonding process is performed. This invention provides a method for inward bending a material.

Embodiments of the present invention will be specifically described below based on the drawings. 1. Fig. 3 is a process explanatory diagram showing the procedure of the inward bending carini method for decorative materials of the present invention. Apply adhesive and stick the two together. Next, grooves (
8) Add. Next, the surface is heated by a heat source (9) to bend the decorative board inward to form 7 vertical portions (4).

During this internal bending, a floating part (1G) of the adhesive is generated by heating. Next, the stationary phase (lυ is
Temporarily fasten or glue. Next, a synthetic resin is injected into the space a3 surrounded by the decorative board, the core material, and the fixing material and hardened to form a resin; Δ(6).

Next, FIGS. 4 to 6 show inward bending 771 of the decorative material of the present invention.
] FIG. 2 is a longitudinal sectional view showing another embodiment of the fixing material in the construction method. In other words, these drawings V (a), (
Fixing materials of various shapes as shown in (b) and (c) are also possible.

As shown above, according to the inward bending method of the present invention, the decorative board and the core material are bonded together in a flat state, so the decorative board does not wrinkle. Furthermore, since the groove provided in the core material is the bending position of the decorative board, the dimensions of the vertical part (4) can be set arbitrarily. Furthermore, since the synthetic resin is injected into a part of the inner bent corner and hardened, no gap is created between the decorative board and the core material, resulting in an inner bent product with excellent strength.

Note that the decorative board referred to in the present invention includes melamine resin decorative board,
In addition to synthetic resin decorative boards such as Danop resin decorative boards and polystyrene resin decorative boards, various types such as gilt plates, metal foils, metal decorative boards, etc. are included. Note that the adhesive used to bond the decorative board and the core 4]l is not particularly limited (but most preferably a rubber-based adhesive). Furthermore, the depth and width of the groove provided in the core material are not particularly limited.
For example, the depth of the groove may be deep enough to cut the back side of the decorative board as shown in Figures 7 to 9, or it may be deep enough to reach halfway through the core material. The width of the groove is sufficient to be about the thickness of one tooth of a circular saw, or it can be cut with a router1.The method of adding the groove from the surface is not limited in any way, and heaters or hot air can be used. It may be a method. For example, a piece of wood is used as the corner fixing material, but there are also shapes shown in FIGS. 3 to 6, and the shape is not limited to these exemplified shapes. The synthetic antigrease to be injected into the void space preferably has adhesive properties, such as urethane resin, epoxy resin, polyester IV, etc.
1! '#J resin or other thermosetting resin can be used.

As explained above, although the method for inwardly bending a decorative material according to the present invention is an extremely simple method, the inwardly bent product obtained by the present invention has no lifting on the back surface of the decorative board at the inwardly bent portion and is reliable. ] It has the advantage of being a 16-story structure, and the dimensions of the vertical part can be set arbitrarily, making it extremely useful for practical use.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views of a workpiece obtained by a conventional internal bending method, and FIG. 8 is an explanatory diagram showing one example of the procedure of the internal bending method according to the present invention. FIGS. 4 to 6 are longitudinal cross-sectional views showing actual kfFi shapes of other fixing materials of internally bent products according to the method of the present invention. 7 to 9 are longitudinal sectional views showing embodiments of the depth of grooves provided in the core material according to the method of the present invention. In the above drawing ((1)...decorative board, (2)
)...6 phases, (3)...A/I/(
curved surface) processed part, (4)... vertical part, (5)...
... Corner void, (6) ... Synthetic resin layer, (7) ... Core material, (8) ... Groove, (9) ... ...Heat source, 0*...Floating part of contact layer, (lυ...Fixed 4=:41(1■・
...Horizontal part, O; φ... Space part. Patent applicant's name Zeto Ibiden Co., Ltd. Representative Jun Taga (8) (C) Figures 4-6 Figure 5

Claims (1)

[Claims] 1. After adhering the decorative board to the core material, create a groove in the core material,
After the surface is heated and bent inward, a fixing material is placed at the corner, and a synthetic resin is injected into the space surrounded by the decorative board, core material, and fixing material, and the material is hardened and bonded. Method for internal bending of decorative materials.