JP2641114B2 - Manufacturing method of curved decorative board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a curved decorative board suitable as a door for a sink, a cooking table, a washbasin or the like.

[0002]

Disadvantages of conventional curved decorative boards The following are known as conventional curved decorative boards of this type. That is, the curved decorative board made of molded plywood is expensive, has poor dimensional accuracy, and has a drawback that it tends to change with time. On the other hand, a curved decorative board made of a synthetic resin has the drawback of being expensive and heavy.

[0003]

The present invention employs the following means to solve the above-mentioned drawbacks. The present invention includes a step of forming a substrate by attaching a flexible sheet to a wooden flat plate, a step of forming mutually parallel kerfs at predetermined intervals on the flat plate, and a step of cutting into a convex portion having a convex columnar surface. A step of bending the substrate in a direction perpendicular to the groove and temporarily fixing the substrate on the flexible sheet side, a step of covering the convex with a concave having a concave portion having a columnar surface, Injecting a synthetic resin fluid into the cavity formed therebetween.

[0004]

Curved decorative panel manufactured by the present invention The curved decorative panel manufactured by the present invention has the following features. Since a wooden flat plate is used as a core material, the wooden flat plate itself may be inexpensive, and since the wooden flat plate is lightweight, the curved decorative board as a whole is inexpensive and lightweight. . In addition, since the substrate is formed by curving a substrate in which cut grooves parallel to each other are formed at predetermined intervals on a flat plate and embedding it in a synthetic resin, that is, it is easy to mold, and it is unlikely to change over time. Since the synthetic resin is used as the constituent member, it is easy to increase the dimensional accuracy, and the secular change is unlikely to occur.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

As shown in FIG. 2, a flexible sheet 2 is attached to a wooden flat plate 10 to form a substrate 3. Plywood, particle board and the like are suitable as the wooden flat plate 10. As the flexible sheet 2, a vinyl chloride sheet or the like is preferable.

Then, as shown in FIG. 3, mutually parallel cut grooves 11 are formed in the flat plate 10 at predetermined intervals.

Thereafter, the convex mold 12 shown in FIGS.
The substrate 3 is curved in the direction perpendicular to the cut groove 11 on the projection 13 having a columnar surface, and the substrate 3 is temporarily fixed on the flexible sheet 2 side. As means for temporarily fixing the substrate 3 to the protrusion 13, a suction device (not shown) is connected to an air hole 14 formed in the protrusion 12, and the space between the flexible sheet 2 and the protrusion 13 is formed. It is conceivable that air is sucked to cause the substrate 3 to be adsorbed to the projection 13 or that the flexible sheet 2 is adhered to the projection 13 by a double-sided tape.

Then, as shown in FIGS. 4 and 5, the convex mold 12 is put on a concave mold 17 having a concave part 16 having a columnar surface.

Thereafter, a synthetic resin fluid 20 is injected into a cavity 18 formed between the concave mold 17 and the substrate 3. As the synthetic resin fluid 20, a fluid of polyurethane resin / polyester resin is preferable.

Thereafter, after the synthetic resin fluid 16 is cured, the curved decorative board 1 is removed from the convex mold 12 and the concave mold 17. Thus, the curved decorative board 1 as shown in FIG. 1 can be obtained.

[0012]

According to the present invention, the following effects can be obtained by the above-described configuration. Since the wooden flat plate is used as the core material, the wooden flat plate itself can be inexpensive, and since the wooden flat plate is lightweight, the curved decorative plate as a whole is inexpensive and lightweight. You can do it. Since the substrate is formed by curving a substrate in which cut grooves parallel to each other are formed at predetermined intervals on a flat plate, and forming it as a curved decorative plate embedded in a synthetic resin, that is, it is easy to mold, and
Since a synthetic resin that does not easily change over time is used as a constituent member, it is possible to manufacture a curved decorative board that has high dimensional accuracy and does not easily change over time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a decorative panel manufactured according to an embodiment of the present invention, with an intermediate part omitted.

FIG. 2 is a vertical cross-sectional view of Step 1 for describing the steps of the embodiment.

FIG. 3 is a vertical sectional view of the second example for describing steps of an example.

FIG. 4 is a vertical cross-sectional view of No. 3 for describing steps of an example.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Curved decorative board 2 Flexible sheet 3 Substrate 10 Flat plate 11 Cut groove 12 Convex type 13 Convex part 16 Concave part 17 Concave type 18 Cavity 20 Synthetic resin fluid

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takao Inoue 2-10-60 Hirabayashiminami, Suminoe-ku, Osaka-shi, Osaka Inside Eiji Sangyo Co., Ltd. (56) References JP-A-3-231 (JP, A)

Claims (1)

(57) [Claims] A step of attaching a flexible sheet to a wooden flat plate to form a substrate; a step of forming cut grooves parallel to each other at predetermined intervals on the flat plate; A step of bending the substrate in a direction orthogonal to the kerfs and temporarily fixing the substrate on the flexible sheet side, a step of covering the convex with a concave having a concave portion having a columnar surface, and the concave and the substrate; Injecting a synthetic resin fluid into the cavity formed between the steps.