JPH06344509A - Production of decorative panel for v-cut - Google Patents

Abstract

PURPOSE:To produce a decorative panel capable of being subjected to V-cut processing using a non-vinyl chloride type resin producing no chlorine gas even if burnt at the time of disposal. CONSTITUTION:A decorative sheet is obtained by forming a grain pattern layer 11 on base paper 12 impregnated with 50-200g/m<2> of a resin and forming a topcoat layer 10 composed of a curable resin o the grain pattern layer 11. This decorative sheet is laminated to a wooden base material 15 to form a decorative panel and V-shape cut grooves H are formed to the rear surface of the base material 15 and the decorative panel is bent along the cut grooves H to be bonded.

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 V-cut decorative plate used for furniture members, audio exterior members, door members and the like.

[0002]

2. Description of the Related Art Conventionally, V-cut decorative boards used for furniture members, audio exterior members, door members, etc.
A vinyl chloride sheet with doubling embossing or doubling embossing / wiping is used as the surface material, this sheet is adhered to a wood-based substrate, and a V-shaped cutting groove is formed on the back side of this substrate. A V-cut decorative plate is known in which an adhesive is applied to the groove, and the V-shaped decorative plate is bent from the deepest vertex of the V-shape and bonded. The vinyl chloride sheet of this surface material has a V-cut cutting groove formed in the base material, and even if it is bent at a right angle of 90 degrees, the surface is stretched, and cracks and breaks do not easily occur, so V-cut decorative boards and other It is also often used as a surface material for decorative boards.

[0003]

However, while environmental problems have been widely taken up in recent years, it is difficult to dispose of a decorative board using vinyl chloride, for example, the problem of chlorine gas generated during incineration is a major obstacle. And V that replaces the vinyl chloride sheet as the surface material
There is an increasing demand for decorative sheets that can withstand cutting.

Therefore, the present invention provides a method for manufacturing a V-cut decorative board which is a V-decorative decorative board and which is made of a non-vinyl chloride resin that does not generate chlorine gas when burned when discarded. is there.

[0005]

The present invention to solve the problems SUMMARY OF THE INVENTION may, on the base paper impregnated with a resin of ^{50g / m 2 ~200g / m 2} (12), grain pattern layer by printing (11) Formed,
A decorative sheet in which a top coat layer (10) made of a curable resin is formed on the handle layer, and the decorative sheet is a wood-based substrate (15).
And a V-shaped cutting groove (H) is formed on the back surface of the base material, which is a method for manufacturing a V-cut decorative plate (20). In addition, the top coat layer is made of urethane resin,
Urethane acrylate resins, consists ionizing radiation curable resin of a polyester acrylate resin, etc., the ionizing radiation curable resin 6g / m ² ~60g / m ² was applied,
It is characterized by being cured by irradiation with ultraviolet rays to form a top coat layer.

[0006]

The present invention is a decorative board in which a decorative sheet having a top coat layer made of an ionizing radiation curable resin such as urethane resin formed on a base paper impregnated with a resin is attached to a wood-based base material. V-cut processing is applied to the base material of the above, and even if it is bent, the top coat layer of the surface material is less likely to crack or break, and this surface can be embossed or wiped, and chlorine gas during incineration can be used. Occurrence can be suppressed.

[0007]

The present invention will be described in detail. FIG. 1 is a side view showing an example of a V-cut decorative plate according to an embodiment of the present invention.

The base paper according to the present invention has a basis weight of 100 to 1
Ethyl vinyl acetate, polyvinyl acetate, epoxy resin, etc. on thin paper of 60 g / m ² 50 to 200
It is impregnated with g / m ² . The elongation at break of the base paper impregnated with this resin is 3% to 10%, and the breaking strength is 3 to 8 kgf / cm. After printing a pattern such as a wood grain pattern on this base paper with a normal gravure ink, an ionizing radiation curable resin, for example, a urethane resin, a urethane acrylate resin, or a polyester acrylate resin is applied at 6 to 60 g / m ² ; It is cured by irradiation with ultraviolet rays to obtain a decorative sheet.

Next, the above-mentioned decorative sheet is laminated on the base material of MDF or particle board. The adhesive is a vinyl acetate type adhesive, and the coating amount is 50 to 100 g / m 2.
^By applying about ² to the base material and thermocompressing the decorative sheet, a decorative plate capable of V-cut processing can be obtained.

Next, a V-shaped cutting groove (H) is formed on the base material from the back surface of the decorative plate (back surface of the base material) by a V-cut cutting machine. As shown in FIG. 2, the cutting groove has a distance (K) from the back surface of the decorative sheet to the tip of the deepest part of the V-cut of 0 to 30 μm.
By setting m, it becomes possible to bend at an acute angle. In this case, as shown in FIG. 3, the V-cut cutting direction includes a cross direction and a vertical direction with respect to the handle layer direction of the decorative sheet.

<Example 1> Base paper (GRACE, End
ura, 160 g / m ² ) was used to print a wood grain pattern with a nitrocellulose-based ink. Next, 3 parts of an initiator benzoin ethyl ether was put into a urethane acrylate resin (viscosity 1200 cps), 6 g / m ² was applied on the above-mentioned pattern layer, and ultraviolet rays were irradiated at 3 J / cm ² to cure the top coat layer. The formed decorative sheet was obtained. Next, the thickness 2.7
7 mm vinyl acetate emulsion based adhesive on MDF
Apply 0 g / m ² wet and apply the above decorative sheet at 60 ° C for 1
Adhesion was performed under the conditions of 5 kgf / cm ² and 20 seconds to obtain a decorative plate.

Example 2 The urethane acrylate resin (viscosity 1200 cps) on the handle layer was coated with 50 g / m ^{2 of the} urethane acrylate resin containing 3 parts of the initiator benzoin ethyl ether and cured by irradiation with ultraviolet rays. Then, a top coat layer was formed. A decorative board was obtained in the same manner as in Example 1 except for the above.

<Comparative Evaluation Test> Two types of V-cut processing in the longitudinal direction and the cross direction were performed from the back surface of the decorative plates obtained in Example 1 and Example 2 using a V-cut cutting machine. At this time, the distance from the back of the sheet to the deepest vertex of the V-cut
Two types of (K), 0 μm and 30 μm, were prepared, left for 24 hours in the atmosphere of temperature 5 ° C. and 20 ° C., then an adhesive was applied to the V-cut surface, bent, fixed with cellophane tape and bent. The outer decorative sheet square surface was compared and evaluated. still,
As a comparative example, a V-cut decorative plate without a top coat layer and a conventional V-cut decorative plate of a vinyl chloride sheet were prepared under the same conditions as above and evaluated for comparison. This comparative evaluation table is shown in Table 1.
Shown in.

[0014]

[Table 1]

As a result of the comparative evaluation, as shown in Table 1, even if the thickness of the top coat layer was thin (6 g / m ² good results could be obtained. Although the V-cut direction was a little in the cross direction, it was slightly inferior. When a thick (50 g / m ² ) topcoat layer was formed, good results were obtained under any of the conditions.

[0016]

In the V-cut decorative plate of the present invention, the coating amount of the ionizing radiation-curable resin forming the top coat layer is 5%.
When it is about 0 g / m ^2, it is possible to obtain a decorative plate which is less likely to be cracked or broken in the surface material even if V-cutting is performed in the same manner as a decorative plate having a vinyl chloride sheet bonded to the surface. Further, unlike a decorative board using a vinyl chloride sheet, it is a decorative board capable of V-cut processing, which has an excellent effect that harmful gas such as chlorine gas is not generated even when burned.

[Brief description of drawings]

FIG. 1 is a partial side view showing an example of a V-cut decorative plate according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing the distance from the back surface of the decorative sheet to the tip of V-cut.

FIG. 3 is an explanatory diagram showing a cutting direction in V-cut cutting.

[Explanation of symbols] 10 ... Top coat layer 11 ... Wood grain layer 12 ... Base paper (resin-impregnated paper) 15 ... Base material 20 ... V-cut decorative plate H ... Cutting groove K ... From the back surface of the decorative paper to the V-cut tip The distance

Claims (3)

[Claims] 1. A forming a pattern layer on a base paper impregnated with a resin of ^{50g / m 2 ~200g / m 2} , and a decorative sheet to form a top coat layer by curing resin to the pattern layer, the decorative The sheet is attached to a wooden base material, and V is attached to the back surface of the base material.
A method of manufacturing a V-cut decorative plate, characterized in that a V-shaped cutting groove is formed. 2. The method for manufacturing a V-cut decorative board according to claim 1, wherein the top coat layer is made of an ionizing radiation curable resin such as urethane resin, urethane acrylate resin, polyester acrylate resin. . Wherein the topcoat layer, an ionizing radiation curable resin 6g / m ² ~60g / m ² was applied, for V-cut according to claim 1, characterized by forming ultraviolet radiation cured A method for manufacturing a decorative board.