JPS6039040B2 - Decorative board manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board, particularly a decorative board having a structure in which a decorative sheet is coated on the surface of a substrate.

Decorative boards are made by laminating a decorative sheet onto a substrate such as plywood, particle board, synthetic resin board, or metal plate.
It is widely used for building materials, furniture materials, etc., but most of them have a flat decorative surface, that is, the surface on which the decorative sheet of the board is viewed is flat. There are very few items that have decorative surfaces with three-dimensional patterns.

This is because if uneven parts are created on the surface of the decorative sheet on the substrate to form the engraved pattern, the laminating process of the decorative sheet takes time and the engraved pattern that appears on the surface of the decorative sheet is not beautifully expressed. This is due to the fact that only decorative laminates with engraved patterns in poor condition can be obtained. This invention was invented in view of the above points, and if a decorative sheet is tightly attached to the surface of a substrate and a substrate with an engraved pattern is used, the engraved pattern of the substrate can be faithfully applied to the decorative surface. It is an object of the present invention to provide a method for manufacturing a decorative board that can be efficiently and economically manufactured to have a decorative surface on both sides using two substrates.

To explain this invention in detail based on the illustrated embodiment, a shallow dish-shaped processing table 11 is mounted on a vacuum suction plate 1 that constitutes a part of a vacuum forming apparatus, and A non-breathable decorative sheet 2A made of a thermoplastic synthetic resin sheet such as a pinyl resin sheet is laid down, and a substrate 3A is placed thereon.

Then, the base plate 4 is erected on the four sides of the substrate 3A,
Another substrate 3B is arranged to face the substrate 3A in the vertical direction via the substrate 4, and another decorative sheet 2B is placed on the entire front surface of the substrate 3B, and the four edges 21B of this decorative sheet 2B are It is extended to reach the top surface of the vacuum suction board 1. Both of the substrates 3A and 3B are made of plywood particle board, synthetic resin board (foamed synthetic resin board, F
The material may be an easily available and inexpensive plate material such as a RP plate (including RP plate) or a metal plate, and the surface may have an uneven surface formed by engraving (machine engraving). And which board 3A,
3B also has a large number of vacuum holes 31 bored in the thickness direction. The vacuum holes 31 may be arranged regularly or randomly, and may be concentrated on the bottom surface of an uneven surface, particularly deep grooves, corner grooves, corner grooves, steep grooves, etc. As mentioned above, the substrates 3A and 3B face each other with the spacer 4 interposed therebetween, so there is a space between them that is secured by the spacer 4, and this space becomes the suction air flow path 5. , the air suction hole 1 of the vacuum suction board 1 through the ventilation path 41 provided in each spacer 4.
2 and lotus are suitable.

Note that, as shown in FIG. 2, if the space 5a between the substrates 3A and 3B is closed from two sides by side plates 6 and 6 facing each other and the remaining 20,000 is opened, the space 5a will be closed from both sides. Since the opening 5b is open to the air, the spacer is not necessary, and the opening 5b serves as a ventilation path for the suction air. Similar to the decorative sheet 2B, the decorative sheet 2A laid on the processing table 11 has its four side greens 21A extending and hanging outward from the side wall 11a of the processing table 11. Decorative sheet 2
B, the four edges of green 21B fit together in a clasped shape to allow air circulation.

The decorative sheets 2A and 2B attached to the substrates 3A and 3B have a hot-melt type adhesive applied to the adhered surfaces, and when the decorative sheets are adhered by vacuum forming means described later. The decorative sheets 2A, 2B are melted and bonded to the substrates 3A, 3B.

Next, the process of closely adhering the decorative sheets 2A, 2B to the substrates 3A, 3B will be explained. First, air is sucked from below the vacuum suction board 1, and the suction air flow path 5
air is suctioned, and the decorative sheets 2A, 2B are suctioned to the surfaces of the substrates 3A, 3B through the vacuum holes 31 of the substrates 3A, 3B, and are brought into close contact with the surfaces of the substrates 3A, 3B.

The air in the suction air flow path 5 is transferred to the air flow path 41 of the spacer 4.
, and the four edges of the decorative sheets 2A, 2B are green 21A, 2.
Pass through the seam of 1B and connect the air suction hole 11 of the vacuum suction board 1.
Take the route of the arrow shown to reach 2. The decorative sheets 2A and 2B that are in close contact with the surfaces of the substrates 3A and 3B are expanded by heating during vacuum suction, and also adhered perfectly and beautifully without wrinkles or folds due to the action of hot melt adhesive. A decorative surface is formed.

In particular, when the substrates 3A and 3B are formed with uneven surfaces for the appearance of engraved patterns, and vacuum holes are intensively bored at the bottom of these uneven surfaces, the decorative sheet facing the portions Because the suction action is extremely active in this part,
The shape of the uneven surface is clearly and sharply expressed. Through the above process, decorative sheets 2A and 2B are applied to substrates 3A and 3B.
If these are adhered, a decorative board having decorative surfaces on both sides can be obtained.

This decorative board is made by leaving green on the four edges of the decorative sheet or cutting it off, and then coloring the decorative surface with the decorative sheet.
Depending on the pattern (flat pattern or three-dimensional pattern), it can be used for building materials, furniture materials, etc. as appropriate. As described above, according to the present invention, a decorative board having decorative surfaces on both sides can be manufactured very efficiently and economically.

In particular, the adhesion of the decorative sheet to the substrate is achieved by the vacuum forming method, which creates an extremely beautiful state with no wrinkles or folds due to the suction of air, resulting in a decorative sheet with excellent decorative effects that could not be expected with conventional methods. be able to.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view schematically showing an example of a decorative laminate manufacturing apparatus and its operation in one embodiment of the present invention, and FIG. 2 is a perspective view of a substrate portion in another embodiment. 1... Vacuum suction board, 11... Processing table,
2A, 2B... Decorative sheet, 3A, 3B...
・Substrate, 31...Vacuum hole in substrate, 4...
・Subasa, 41...Vent passage, 5...Air flow channel, 6...Side plate. Figure 1 Figure 2

Claims (1)

[Claims] 1. Two substrates with a large number of vacuum holes perforated in the thickness direction on the plate surface are placed facing each other so that a suction air flow path exists between the substrates, and a non-ventilated Decorative sheets are attached via an adhesive layer, the edges of these decorative sheets are extended, and the edges of the decorative sheets are brought together to form a palm-like shape with an air circulation gap, and the suction air flow path located in the middle of the substrate is closed. suctioning air in the suction air flow path in the middle of the substrate by vacuum forming means through the seam of the edge of the decorative sheet;
A method for manufacturing a decorative board, characterized in that a decorative sheet is closely adhered to the entire front surface of the substrate to obtain a decorative board in which the surface of the substrate is covered with the decorative sheet.