JPH07116036A - Manufacture of decorative panel - Google Patents

Abstract

PURPOSE:To provide a decorative panel which can be bonded flush without causing a step difference in a joint between paper cores and a frame material and by which the nonconformity of a thickness and the occurrence of a recess and projection on a surface can be restrained and deformation or the like is not caused when a decorative sheet is stuck to a curved surface by forming the curved surface by cutting the wood square bar parts and dimensional accuracy is heightened and weight is reduced and which can be stuck to the curved surface. CONSTITUTION:A manufacturing method is constituted in such a way that a part of the outer edge parts of plate-like paper cores 1 is left, and the square column-shaped notch parts 2 are arranged on both surfaces, and wood square bars 3 having almost the same shape with the notch parts 2 are situated in and bonded to the notch parts 2, and after plate materials 4 are stuck together on both surfaces, a core material is created by cutting it so that a curved surface is formed by a part of the wood square bars 3, and a decorative sheet is stuck on a surface of the core material.

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 decorative panel used for building interior panels, counter top plates, desk top plates, housing equipment, furniture panels, doors and the like.

[0002]

2. Description of the Related Art As a structure of a decorative panel, there are a solid core structure and a flash structure. A so-called loose post in which an outer edge portion of a core material is finished with a curved surface and a decorative plate as a surface material is bonded along the curved surface. In the case of curved decorative panels such as foam processing, a solid core structure that uses a plate material such as plywood, particle board, and medium-quality fiberboard as a core material has been widely adopted because of its easy workability.

In the case where a flat-paneled decorative panel is required to be lightweight and economical in transportation and construction,
A makeup panel with a flash structure was used.

As a method of manufacturing a curved decorative panel having a flash structure, a wooden lumber of the same thickness as the paper core to be the panel frame material is adhered to the outer edge of the paper core, or the wooden lumber is used. After assembling it into a frame shape of a panel, filling a paper core in a space inside the frame, cutting the frame material into a curved surface, a decorative sheet was attached.

[0005]

However, plywood,
In the case of a curved surface-finished decorative panel having a solid core structure using a particle board, a medium-quality fiberboard, or the like as a core material, the weight of the core material is heavy, and the material cost is not economical.

Further, in the flash structure, in order to bond a frame material having the same thickness as the paper core, which is the core material, so as to be flush with the surface of the paper core without causing a step, the core material and Each of the frame members requires a high degree of dimensional accuracy, and it was difficult to correct even a slight deformation or bending of the core member. Therefore, it is necessary to be very careful in processing, and it has not been easy to carry out the process, especially with a panel having a long-sized grain surface.

Also, in the method of filling the paper core after the frame material is assembled, sufficient dimensional accuracy control is required in order to prevent the thickness of the paper core from the thickness of the frame material. It was essential.

When there is a dimensional difference between the paper core and the frame material so that they are not flush with each other and a step is formed, the step appears linearly on the surface of the front plate, resulting in a poor appearance and a panel thickness. However, there was a problem such as partial unevenness.

According to the present invention, it is possible to bond the paper core and the frame material flush with each other without forming a step, thereby suppressing unevenness in thickness and unevenness of the surface, and cutting the wooden lumber portion. By forming a curved surface, it is possible to obtain a lightweight curved decorative panel with high dimensional accuracy without deformation when the decorative sheet is bonded on a curved surface.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a plate-shaped paper core has a part of the outer edge portion left on the outer edge portion, and a rectangular column-shaped notch portion is provided on both surfaces in the length direction and / or the width direction. , A wood timber having substantially the same shape as that of the cutout portion is arranged with an adhesive so as to be aligned with the position of the cutout portion and bonded together, and a plate material is adhered to both surfaces to form a curved surface at the wood timber portion. The method for producing a decorative panel is characterized in that a decorative sheet is attached to the surface of the core material by cutting as described above to create a core material.

The plate-shaped paper core used in the present invention constitutes a core material of a decorative panel having a composite structure, and is a roll core, a honeycomb core, a feather core, a corrugated cardboard laminate or the like.

As shown in FIG. 1, these paper cores are notched in the lengthwise and / or widthwise direction using a tenoner or the like, leaving a part of the center of the outer edge of the wood mouth, and are convex pits. Cut into shape. Apply adhesive such as vinyl acetate resin-based adhesive, urea resin-based adhesive, etc. to the cutouts of this paper core, and then press the wood squares with substantially the same dimensions as the cutouts so that they are pressed against the cutouts. Then, pressurize and fix from both sides to bond the paper core and the wooden lumber.

The adhesion of the wood core and the wooden lumber is carried out by sandwiching these materials with a plate having rigidity from both sides, flat plate pressing,
It is possible to obtain a desirable result by lightly pressing with a tan buckle.

According to the present invention, the wood lumber can be arranged in such a manner that the notch surface acts as a ruler by applying the lumber surface to the notch surface of the paper core, and accurate alignment can be performed.

When the wood lumber arranged in the cutout portion is pressed in the direction perpendicular to the surface of the panel, the paper core located between the upper and lower wood lumber has a cushion effect for adjusting the thickness. It is possible to absorb a step caused by a slight difference in size between the paper core surface and the wooden lumber surface, and easily form a flush core material surface.

In particular, by using a water-based adhesive such as a vinyl acetate resin-based adhesive as the adhesive, the adhesive-coated surface of the paper core is softened and plastically deformed by pressurization, and the thickness is regulated. The timber can be made flush.

Plate materials such as a phenol laminate, a plywood, a hard board, and a medium-quality fiber board are attached to both surfaces of a core material whose outer edge portion is reinforced by a square material. It is desirable that these plate materials are thin in terms of weight reduction. The work of bonding the plates is easy after bonding the wooden lumber and the paper core in advance, but it is also possible to bond the wooden lumber, the paper core and the plate together at the same time as they are assembled and then glue and integrate them. Is.

As an adhesive for bonding the plate material and the core material,
Vinyl acetate resin emulsion type, urea resin type, water-based vinyl urethane resin type, etc. are suitable.
select.

After the laminating of the plate materials is finished, the wood square pieces are cut to form curved surfaces, and the core material of the decorative panel for curved surface processing is obtained. Therefore, it is necessary to set the dimensions of the wooden lumber in advance so that the desired curved surface can be cut.

The decorative sheet to be attached to the surface for processing curved surfaces is a melamine decorative sheet for postform, a diallylphthalate decorative sheet, a decorative sheet that can be bent by heating such as a vinyl chloride resin decorative sheet, or a decorative sheet with a sticky sheet. Used.

The method of laminating the decorative sheet is as follows. A synthetic rubber adhesive is applied to the back surface of the decorative sheet and the surface of the core material with a spray gun, the solvent is evaporated, and the decorative sheet is overlaid on the core material. The curved surface portion is heated to be softened, and pressure is applied by a roll, a pressure sheet or the like to adhere the curved surface portion. In this way, a lightweight curved decorative panel can be obtained.

[0022]

【Example】

First Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. JI
It has two kinds of performance specified in SA6931, cell size is 5 mm, compression strength is 4.9 × 10 ⁵ Pa, and the corrugated cardboard-shaped paper core 1 having a thickness of 25 mm is 30 mm horizontally from the outer edge portion to the plate surface. The notch 2 having a length of 8 mm with respect to the vertical direction was formed using a tenor. The cutout portions 2 were formed on both sides of both outer edge portions in the length direction of the paper core 1, and were cut so that the outer edge portions of the paper core 1 were convex.

Next, a vinyl acetate resin emulsion adhesive is applied to the cross section of the cutout portion 2, and the wood lumber 3 made of a medium fiberboard having the same size as the cutout portion 2, that is, 30 mm × 8 mm is cut. Press it against the notch surface so that it matches the position of the notch, and sandwich it from both sides with a 12 mm thick plywood contact plate.
It was pressed with a flat plate press at a pressure of 0.98 × 10 ⁵ Pa for 5 hours to bond the paper core 1 and the square bar 3 to form a core. The adhesive portion between the paper core 1 and the square member 3 of this core material was finished flush without any step.

A plate material 4 having a thickness of 0.8 is formed on both surfaces of the core material.
The mm-mm phenolic resin laminated plate was attached using a vinyl acetate emulsion adhesive. After the laminating and bonding of the plate member 4 is completed, it becomes the surface of the decorative panel so that a curved surface with a radius of curvature of 8 mm is formed at the portion of the wooden lumber 3 bonded to the notch 2 at the outer edge of the paper core 1. The wood square 3 on the side was cut to obtain a core material for post-form processing.

Next, a spray gun is used on the surface of the core material and on the back surface of a postform type melamine decorative board having a thickness and a thickness of 0.8 mm which is suitable for the postform processing of the core material as the decorative sheet 5. After applying a synthetic rubber adhesive and drying it with hot air at 120 ° C for 1 minute, overlaying both, heating the curved surface pasted part of the decorative sheet 5 to about 160 ° C with a post-forming machine, and pressing with a pressure roll. Then, bonding was performed while bending along the curved shape to obtain a decorative panel 6. The decorative panel 6 thus obtained was lightweight, had high dimensional accuracy, had a smooth surface, was easy to handle, and had a good appearance.

[0026]

According to the method of manufacturing a decorative panel of the present invention, a method is provided in which notches are provided on both surface sides of the paper core, leaving a part of the outer edge of the paper core, and a wooden timber having the same size and shape as the notches is adhered. Since the cutout surface serves as a guide for controlling the position of the wooden lumber, the positioning can be easily performed without requiring special alignment steps.

Further, the thickness of the wooden lumber becomes thinner than that of the conventional core material, and the vertical and horizontal one surfaces are arranged so as to be pressed against the notched surface of the core material. Curvature and deformation can be corrected and bonded, and workability is significantly improved.

Further, since a part of the outer edge of the paper core is left and the part is pressed and bonded so as to be sandwiched by the wooden lumber, a slight dimensional difference between the wooden lumber and the paper core surface is By pressurizing and adhering the core surface and the square member surface flush with each other, the paper core portion is plastically deformed and straightened and fixed. In particular, by using an aqueous adhesive, the paper core becomes wet and softened, and this correction effect becomes remarkable, and it is possible to eliminate the step of the core material, and when pasted, there is no uneven line and surface appearance and dimensions The accuracy can be improved.

The wooden timber placed and fixed on the outer edge of the paper core usually has a smaller cross section than a generally used frame material, so that the weight is reduced and the use of the paper core and the combined effect make it possible to make a decorative panel. It is possible to reduce the weight. In addition, the amount of wood used is reduced, which improves economic efficiency.

Since the curved surface portion of the decorative panel is formed of the wooden lumber portion, or the plate material and the wooden lumber portion, it can withstand the heat and pressure in the curved surface laminating process of the decorative sheet and is not deformed. The dimensional accuracy can be maintained.

[0031]

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a material configuration before curved surface cutting of a core material of a decorative panel of the present invention.

FIG. 2 is a cross-sectional view showing the structure of the core material of the decorative panel of the present invention.

FIG. 3 is a cross-sectional view showing the structure of the decorative panel of the present invention.

[Explanation of symbols]

 1 Paper core 2 Notch 3 Wood square 4 Plate 5 Decorative sheet 6 Decorative panel

Claims (1)

[Claims] 1. A plate-shaped paper core, wherein a part of the outer edge portion is left, and a rectangular column-shaped notch portion is provided on both surfaces in the length direction and / or the width direction, and is substantially the same as the notch portion. Through the adhesive, the wood timber in the shape is arranged and adhered so as to match the position of the notch, and the plate material is pasted on both sides, and the wood timber is cut so that a curved surface is formed, A method for producing a decorative panel, which comprises producing a core material and then laminating a decorative sheet on the surface of the core material.