JPH06312409A - Manufacture of decorative panel - Google Patents

Abstract

PURPOSE:To provide a decorative panel of a high quality in a short period of time by keeping a heating temperature at a specified temperature ( deg.C) or lower, and compensating the shortage of a heating value of the heating temperature by the increase of a compressing force, when a decorative sheet is attached to a base panel by heating them by heat blow while compressing by a roll. CONSTITUTION:When a decorative panel is manufactured, at a process (A), a decorative sheet 2 is laminated on a base panel 1. Then, at a process (B), an R surface 3 is machined at the ends of the base panel 1 while leaving the decorative sheet 2 on the surface as it is. Then, at respective processes (C), (D), on the R surfaces 3 of the base panel 1, a hot melting adhesive 4 and vinyl chloride adhesive 5 are applied in order. Then, at a process (E), the adhesives are dried by heat blow, and the decorative sheet 2 is bonded to the R surface 3 by pressing by compressing rolls 6. At the same time, the sticking out decorative sheet 2 is trimmed by an automatic cutter. Then, the heating temperature by heat blow is kept at 50 deg.C or lower, and the shortage of heating value by the heating temperature is compensated by the increasing of the roll compressing force.

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 furniture, doors for sink cabinets, and other decorative sheets.

[0002]

2. Description of the Related Art In general, furniture, doors of sink cabinets, and the like are made up by applying a decorative sheet having a wood pattern or other patterns on the surface. Further, this type of decorative plate has a rounded surface or a side edge with an R surface processing.

Hereinafter, a conventional method of manufacturing a decorative board with an R surface will be described with reference to FIG. First, as shown in FIG. 2 (A), an edge of a substrate 11 made of wood is cut by a cutting machine along a dotted line to form an R surface 12. Next, as shown in FIG. 1B, the adhesive 13 is applied to the main surface including the R surface 12 of the substrate 11 by spraying or brushing. Next, a decorative sheet 14 having a pattern is attached to the main surface of the substrate 11 as shown in FIG. Here, the decorative sheet 14 is made of di-allyl phthalate (DAP), melamine, veneer, coated paper, or a vinyl chloride sheet. Further, as shown in FIG. 3D, the decorative sheet 14 is adhered to the substrate 11 by heating and pressing. Of course, the R surface 12 is also pressed and adhered by a pressure roller or the like. Then, as a final step, as shown in FIG. 8E, the protruding extra portion of the decorative sheet 14 is cut by a cutter to complete the decorative plate.

[0004]

The above-mentioned conventional method for manufacturing a decorative plate is performed by applying the adhesive 13 shown in FIG. 2B, applying the decorative sheet 14 shown in FIG. Each of the stretching process and the heating and pressing process shown in FIG. 2 (D) requires labor and working time. For example, each process requires 15 minutes, which leads to poor productivity, cost increase, and also in terms of deburry. There are many problems. Also, it is difficult to manufacture the decorative sheet because it is thermally deformed when heated. Especially, when the decorative sheet is PVC, the thermal deformation is caused, and the buckling on the R side makes the product difficult to be manufactured. However, there was a problem that it could not be completed.

The present invention has been made in consideration of the above conventional problems, and an object of the present invention is to provide a method capable of producing a high-quality decorative board in a short time.

[0006]

In order to achieve the above object, the present invention comprises a step of laminating a decorative sheet on a substrate, a step of leaving a decorative sheet on the surface and processing an R surface at the end of the substrate, From the process of applying a hot melt adhesive and the Vibi adhesive to the R surface of the above, the process of drying with heat blow and pressing the decorative sheet on the substrate surface including the R surface, and the process of trimming the decorative sheet The method for producing a decorative board is to maintain the heating temperature by the heat blow at 50 ° C. or less and to compensate for the insufficient heat amount due to the heating temperature for the adhesion by increasing the roll pressing force.

[0007]

When the decorative sheet is adhered to the substrate having the R surface, the above-mentioned method for manufacturing a decorative plate is apt to cause thermal deformation by setting the heating temperature by heat blow to 50 ° C. which is lower than the temperature required for the adhesion. The heat deformation of the decorative sheet is prevented, and the insufficient amount of heat for bonding is compensated by the roll pressing force, so that the decorative sheet can be sufficiently bonded.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1A, 1 is a substrate made of wood,
A decorative sheet 2 such as dup, melamine, veneer, or coated paper is laminated on the entire surface.

Next, as shown in FIG. 1B, at the end of the substrate 1, the decorative sheet 2 is left and the R surface 3 is processed and formed. Next, as shown in FIG. 1C, a hot melt adhesive 4 is sprayed on the R surface 3 of the substrate 1. Next, Figure 1
As shown in (D), an acrylic copolymer emulsion and a sunflower adhesive 5 are sprayed on the R surface 3.

Next, as shown in FIG. 1 (E), after drying by heat blow, it is held down by a compression roll 6 and the decorative sheet 2 is placed on the R side 3.
Adhesion is suppressed while suppressing the trimming of the protruding decorative sheet 2 with an automatic cutter.

When a vinyl chloride sheet is used as the decorative sheet 2, the vinyl chloride sheet is heated to 60 ° C. when heated.
If it exceeds, thermal deformation will occur. The hot air temperature during the heating is 4
When an experiment was performed every 0 ° C., 50 ° C., 60 ° C., 70 ° C., it was confirmed that no problem occurred up to 50 ° C.

Therefore, in the present invention, the temperature is lowered at the time of heating after the adhesive is sprayed in the above step, and the blow is adjusted so that the surface temperature of the decorative sheet 2 is maintained at 50 ° C. or lower. The lowering of the temperature causes a shortage of heat required for bonding, but the number of pressing rolls is increased to increase the subsequent pressing amount (pressing time × pressing force) to compensate for the insufficient amount of heat for the temperature decrease.

By the above-mentioned device, even if the decorative sheet 2 is made of vinyl chloride, thermal deformation can be prevented, and the buckling of the decorative sheet itself due to bending stress can be completely prevented by the pressing roll.

Although the above description has been made on the vinyl chloride sheet, it is needless to say that the decorative sheet 2 can be similarly adhered to a substrate having an R surface regardless of whether the decorative sheet 2 is dapp, melamine, veneer or coated paper.

[0015]

As is clear from the description of the above embodiment,
The manufacturing method of the decorative board of the present invention can be a manufacturing method in which buckling does not occur in thermal deformation and bending of the decorative sheet adhered to the R-faced substrate by devising the heating temperature and the pressing amount. , Continuous processing is possible, the processing time can be reduced to 1/3 to 1/5 of the conventional one, and the production efficiency is improved.
Realize low cost products.

[Brief description of drawings]

FIG. 1 is a process diagram of a decorative board manufacturing method according to an embodiment of the present invention.

FIG. 2 is a process diagram of a conventional decorative board manufacturing method.

[Explanation of symbols]

 1 Substrate 2 Decorative Sheet 3 R Side 4 Hot Melt Adhesive 5 Adhesive Adhesive 6 Pressure Roll

Claims (2)

[Claims] 1. A step of laminating a decorative sheet on a substrate, a step of processing an R surface on an edge of the substrate while leaving a decorative sheet on the surface, and a hot melt adhesive and a viscous adhesive on the R surface of the substrate. It comprises a step of applying, a step of drying by heat blow, a step of holding the decorative sheet on the substrate surface including the R side by a roll, and a step of trimming the decorative sheet, and the heating temperature by the heat blow is kept at 50 ° C. or lower. A method for manufacturing a decorative board, which compensates for the insufficient heat amount due to the heating temperature for adhesion by increasing the roll pressing force. 2. The decorative sheet is a vinyl chloride sheet.
A method for manufacturing the decorative board described above.