JPH0768675A - Structure of decorative panel - Google Patents

Abstract

PURPOSE:To obtain a decorative panel achieved in the reduction of wt. and the conservation of a material, enabling the connection of a member to a desired arbitrary place or the attachment of a part metal fitting, easily obtaining strength necessary for attachment and excellent in productivity and economical efficiency. CONSTITUTION:A paper core being a core material 2 is charged in the space part surrounded by a frame material and a thermosetting resin laminated sheet with a thickness of 1.0-1.6mm composed of a melamine decorative panel is laminated to at least one of the surface plates 3 laminated to both surfaces of the core material 2 and a hole reaching the paper core is provided to the place where the surface plate 3 and a bonding member are bonded and a wood piece 4 is inserted and fitted in the hole to bond the core material 2 and the rear surface of the skin plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a decorative panel used for interior partitions, doors, counter tops, desk tops, furniture members and the like.

[0002]

2. Description of the Related Art Conventionally, as a decorative panel used for interior partitions, doors, desk top plates, etc. with a melamine decorative plate laminated on the surface, a plate material such as plywood, particle board, medium fiber board is used as a core material, and at least one side A thermosetting resin consisting of a decorative panel with a solid core structure and a frame and crosspieces made of wood material and a paper core filled in the space to form a core, and at least one side of which is a melamine decorative plate. There is a so-called loose flash structure decorative panel that is laminated from both sides using a laminated plate.

[0003]

The decorative panel having a solid core structure has excellent sound insulation and impact resistance, and has a small deflection against a load, and is a process for connecting and fixing other members to an arbitrary portion of the panel. Although it has features such as being able to attach metal fittings, parts, etc., it has increased in weight and was more expensive in price than a decorative panel with a flash structure.

When a particle board or a medium-quality fiberboard is used as the core material, the material is not dense as compared with the wood itself, so that the screw holding power is lower than the wood and the strength is insufficient depending on the application. There were cases.

Although it is possible to reduce the weight of a decorative panel having a flash structure, when it is combined with another member by a screw or a metal fitting part is attached, it can be attached only at the position of the crosspiece of the core material. The crosspiece must be arranged in advance at the mounting position, and changing the mounting position after manufacturing the decorative panel cannot be dealt with.

Further, it is necessary to use a material having sufficient strength as the crosspiece, and a piece made of wood, plywood, laminated wood or the like has been used.

According to the present invention, the weight is reduced and the material is saved, the members can be connected to any desired places and the component fittings can be attached, and the strength required for the attachment can be easily obtained. The purpose is to obtain a decorative panel that is excellent in productivity and economy.

[0008]

According to the present invention, a paper core is used as a core material, and both surfaces thereof have front plates with a thickness of 1.0 to 1.6 m.
In a decorative panel in which a thermosetting resin laminated plate of m is laminated, and at least one of the front plates is a melamine decorative plate, a hole having a desired depth is formed to penetrate the front plate and reach the core material. , A piece of wood that fits into this hole is attached to the core material through an adhesive,
And a structure of a decorative panel characterized by being bonded to the back surface of a perforated front plate.

In the present invention, the core material of the decorative panel is wood, plywood,
In a space surrounded by a frame material made of laminated wood, etc., a honeycomb core having the same thickness as the frame material, a roll core,
A paper core material such as a feather core or a corrugated cardboard laminate is filled, and a thermosetting resin laminate having a thickness of 1.0 to 1.6 mm is attached to both surfaces with an adhesive.

If necessary, a crosspiece may be incorporated in the core material to reinforce it. A melamine decorative board is used on at least one side of the thermosetting resin laminated board which is a front board to be attached to the surface of the core material, and a phenol laminated board called a backer is usually used on the other side. If both sides are required to have a beautiful appearance, melamine decorative boards are used on both sides.

A suitable thickness of the front plate is 1.0 to 1.6 mm. When the thickness is 1.0 mm or less, the impact strength and the appearance are not sufficient when the core plate and the core material are bonded together, and the surface plate is fitted into the hole. It is difficult to maintain sufficient strength when fixing the cut wood pieces. If the thickness is 1.6 mm or more, it is not advantageous in terms of economy.

As the adhesive used for bonding the core material and the front plate, a urea resin-based adhesive, a melamine resin-based adhesive, a vinyl acetate resin-based adhesive or the like can be appropriately used depending on the application.

After the bonding between the core material and the front plate is completed, a hole is formed at the position where the members are to be joined and the metal fitting parts are to be attached, through the front plate and reaching the paper core. The diameter and depth of the holes can be determined as needed.

After the holes are formed, an adhesive is injected and filled into the perforated hole portion, and a fittable cylindrical wood piece having a shape close to that of the perforated hole portion is inserted and fitted, and the core material is used. It is glued to a paper core and the back of the front plate.

As the adhesive, various adhesives used for adhering the core material and the front plate can be appropriately selected, but a foaming adhesive having a foaming ratio of 1.5 to 2.0 times. It is preferable to use since it can be hardened like a brim and firmly adhered to the front plate and the back surface.

It is necessary to use a material having sufficient strength such as a screw holding force for the wood piece to be inserted into the hole. The inserted piece of wood is adhered to the core material via an adhesive, and the filled adhesive is fixed and adhered to the back surface of the front plate in a brim shape.

In the decorative panel thus obtained, it is possible to join members to the wood pieces inserted into the perforations and to attach metal fittings or the like. Hereinafter, description will be made based on examples.

[0018]

【Example】

Example 1 A space 2 surrounded by a frame material 1 made of wood having a thickness of 25 mm is filled with a corrugated cardboard-shaped panel paper core having the same thickness as the frame material 1 to form a core material 2. Then, a 1.2 mm thick melamine decorative board and a 1.2 mm thick phenolic resin laminated board were bonded together using a vinyl acetate resin emulsion adhesive as the front board 3, and the core material 2 and the front board 3 were After the completion of the bonding, the frame material 1 was cut so that the outer edge portion of the frame material 1 became the edge material of the decorative panel 6, and polishing and painting were performed.

Next, a hole having a diameter of 20 mm and a depth of 15 mm is made at the table leg mounting position of the phenol resin laminated plate, and a polyurethane adhesive having a foaming ratio of 1.8 times as the adhesive 5 is formed in the hole portion. Made Aika Aibon WX-5
73) is injected and the diameter is 19.5m made from beech wood.
A makeup for a dining table top plate in which a cylindrical wood piece 4 having a size of mΦ and a length of 10 mm is inserted and fitted, and then the adhesive is cured to adhere the wood piece 4 to the core material 2 and the back surface of the front plate 3. Panel 6 was obtained.

In this decorative panel 6, since the wood piece 4 is arranged at the table leg mounting position of the front plate 3 on the back side, the table leg frame which is the joining member 7 can be easily attached by using screw nails. .

Comparative Example 1 As Comparative Example 1, a 150 mm (U type) particle board having a thickness of 25 mm, which is defined in JIS A5908, is used as a core material, and a melamine decorative board and a phenol sheet having a thickness of 1.2 mm are used as a surface board. The resin laminated board was laminated using a vinyl acetate resin emulsion adhesive to obtain a decorative panel.

Comparative Example 2 As Comparative Example 2, a medium quality fiberboard (MDF) having a thickness of 25 mm
Was used as a core material, and a front panel was attached in the same manner as in Comparative Example 1 to obtain a decorative panel. A wood screw holding force test was conducted on Example 1, Comparative Example 1, and Comparative Example 2. Table 1 shows the test results
Shown in.

Test Method A square test piece of 50 mm × 50 mm centering on the mounting portion of the wood piece 4 of the decorative panel manufactured under the same conditions as in Example 1 is used as a cut test piece. In addition, in Comparative Example 1 and Comparative Example 2, test pieces having the same size and shape are prepared from an arbitrary portion of the decorative panel.

Next, the diameter 2.
A 7 mm, 16 mm long wood screw with a cross hole is screwed vertically into the center of the surface of the test piece on which the phenolic resin laminate is attached, and then the test piece is fixed and the pulling speed The wood screw is pulled out vertically at about 2.0 mm / min, the maximum load is measured, and the average value is obtained. This test was conducted on each of three test pieces, and the average value thereof was used as the wood screw holding force.

[Table 1]

[0025]

EFFECTS OF THE INVENTION Since the core material of the decorative panel does not use a plate material such as plywood, the material can be saved, the weight can be reduced, and the handling and transportation are easy. Since the decorative panel of the present invention is perforated at a desired position, and a piece of wood serving as a base for fixing components and the like is fitted and fixed by adhesion, it has a flash structure, but a joint portion with a member. It is not necessary to have a structure in which crosspieces are placed at the mounting positions of metal fittings, parts, etc.

Further, the wood pieces to be fitted and fixed may be smaller than the crosspieces, the amount used is small, and since the wood pieces are installed only at the joining portion, even if a particularly high quality one is selected from the viewpoint of strength retention, the price is low. Has a small effect on the product quality and is easy to maintain quality. Therefore, the crosspiece can be omitted.

In the decorative panel of the present invention, at the perforated part,
Glue the cut paper core edge to the inserted wood piece in such a way that the adhesive wraps it.Furthermore, the adhesive solidifies into a brim in an area larger than the diameter of the hole in the front plate. Since they are bonded, they are not destroyed by an external force such as a pulling load, and the individual strength of the inserted wood piece itself can be sufficiently exerted.

The decorative panel of the present invention is generally attached to the member, part, etc. at many places such as the back surface which are not visible to the human eye, and the wood piece fitted and embedded may be small. It is hidden and can be finished practically without any discomfort.

[0029]

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of the structure of a decorative panel of the present invention.

FIG. 2 is a cross-sectional view showing an example in which a joining member is fixed to the decorative panel of the present invention.

[Explanation of symbols]

 1 Frame Material 2 Core Material 3 Surface Board 4 Wood Piece 5 Adhesive 6 Decorative Panel 7 Joining Member

Claims (1)

[Claims] 1. A paper core is used as a core material, and a thermosetting resin laminate having a thickness of 1.0 to 1.6 mm is laminated as a front plate on both surfaces thereof, and at least one of the front plates is a melamine decorative board. In a decorative panel, a hole having a desired depth that penetrates the front plate and reaches the core material is made, and a wood piece fitted in the hole is attached to the core material and the perforated surface plate with an adhesive. A decorative panel structure characterized by being bonded to the back surface.