JPH0362525B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board in which a decorative sheet is adhered to the surface of a base material such as plywood, hardboard, rock wool board, or wood fiber board.

The above-mentioned decorative board is used for ceilings, wall materials, etc., and in order to prevent the above-mentioned base material from being exposed at the joints when these are pasted together, the side edge corners of the base material are cut at right angles to the cross section. A decorative sheet is continuously attached so as to wrap around the surface of the base material on which the chamfered edge has been formed to the side surface of the chamfered edge.

As shown in FIGS. 1 to 3, the conventional decorative board has a decorative sheet 5 on the surface of a plate-shaped base material 1.
After pasting (Fig. 1), both sides of the base material 1 are cut and chamfered so that a thin layer 1' of the base material 1 remains on the back side of the decorative sheet 5 to prevent damage to the decorative sheet. The decorative sheet 5 having the thin layer 1' is press-bonded to the side surface of the chamfered edge part 6' with an adhesive (see FIG. 2). 51-11999).

However, according to this manufacturing method, since the decorative sheet 5 is rolled up together with the thin layer 1' of the base material 1 when it is attached to the chamfered edge processing part 6', the thickness of the decorative sheet 5 increases. As a result, the corners of the bent portions lack sharpness, and when a decorative board is laminated as a butt joint, the joints lack sharpness and the joints become conspicuous.

The above drawbacks can be eliminated by manufacturing a decorative board by pasting a decorative sheet on the surface of a base material that has been chamfered in advance, but according to this method,
Since the sheet adhesion process, which has a slow processing speed, is an intermediate process, it has the disadvantage of decreasing productivity.

The present invention was made in view of the above-mentioned conventional drawbacks, and involves applying an adhesive only to the portions of the surface of the base material other than the positions to be chamfered, and pasting the decorative sheet on the surface of the base material, together with the decorative sheet. After cutting the base material at the adhesive-unapplied part, chamfering the side edge corners of the base material to form a chamfered edge processed part, and applying adhesive,
The present invention provides a method for manufacturing a decorative board that sharpens the corners of the chamfered edge by attaching the decorative sheet to the chamfered edge, making it possible to form ceilings, walls, etc. with inconspicuous joints. That is.

Next, the method according to the present invention will be explained with reference to the drawings.

Figures 4 to 8 show the method according to the present invention in the order of steps. First, the surface of a plate-shaped base material 1 such as plywood, hardboard, rock wool board, or wood fiberboard is removed. Adhesive 2 is applied to areas other than the application positions to form adhesive-applied areas 3 and adhesive-unapplied areas 4 on the surface (FIG. 4).

Subsequently, after pasting the decorative sheet 5 on the entire surface of the base material 1 and cutting the base material 1 together with the decorative sheet 5 at the center of the adhesive-unapplied area 4 (FIGS. 5 and 6),
The side edge corners of each base material 1 that are not bonded to the decorative sheet 5 are cut to form a chamfered edge portion 6 (FIG. 7). After applying adhesive to the chamfered edge processing section 6, the decorative sheet 5 stuck to the adhesive application section 3 is bent and attached to the chamfered edge processing section 6, thereby forming a decorative board ( Figure 8). still,
The shape of the chamfered or edged portion 6 may be any suitable shape, such as a solid shape or an offset shape, depending on the use of the decorative board, and is not limited to what is shown in the drawings.

Here, examples of the decorative sheet 5 include sheets of vinyl chloride, paper, cloth, and the like.

In addition, FIG. 9 shows an adhesive coating device used in the adhesive coating process, in which a back-up roll 7 and a reverse roll 8 are arranged side by side vertically at appropriate intervals and rotatable in the same direction. , the base material 1 before being cut is conveyed by a back-up roll 7, and an adhesive is applied to the surface of the base material 1 by a reverse roll 8. A doctor roll 9 that rotates in the same direction as the reverse roll 8 is provided on the side of the reverse roll 8, close to and parallel to the reverse roll 8. The amount of adhesive applied to the surface of 1 is adjusted.

Further, a dam 10 with a doctor function is provided between the reverse roll 8 and the doctor roll 9 in order to prevent the adhesive from spilling from both ends of the roll and to form an adhesive-unapplied area 4.
A doctor knife 11 is provided on the doctor roll 9 to scrape off the adhesive on the circumferential surface.

As described above, according to the present invention, an adhesive-applied area and an adhesive-unapplied area are formed on the surface of a base material, a decorative sheet is pasted on this surface, and the adhesive-unapplied area of the base material is attached together with the decorative sheet. After cutting, the edge corners of the base material are chamfered to form a chamfered edge part, and after applying an adhesive to this part, the decorative sheet is pasted so as to be rolled up to produce a decorative board. There is. For this reason, only the decorative sheet with no base material adhered to it is bent and pasted on the chamfered part, making it possible to obtain sharp corners and bonding the decorative sheet without any gaps, making it possible to attach the decorative sheet to the joint area. It is possible to form unobtrusive ceilings, walls, etc.

In addition, if the area where the adhesive is not applied is made slightly larger and has more room, even if the chamfered edge is formed a little off from the specified position, the decorative sheet to be attached to this area can be applied with adhesive on the back side. Since the base material of the applied part does not remain and the sharpness of the folding of the decorative sheet does not become dull, it has the effect that high precision is not particularly required for chamfering.

[Brief explanation of drawings]

Figures 1 to 3 are explanatory diagrams showing the conventional manufacturing procedure for decorative laminates, Figures 4 to 8 are explanatory diagrams showing the procedure of the method according to the present invention, and Figure 9 is a perspective view of the adhesive application device. It is a diagram. 1...Base material, 2...Adhesive, 3...Adhesive-applied area, 4...Adhesive-unapplied area, 5...Decorative sheet,
6... Chamfered edge processing part.

Claims (1)

[Claims] 1. Apply adhesive to parts of the surface of the plate-shaped base material other than the positions to be chamfered, form an adhesive-applied area and an adhesive-unapplied area on the base material surface, and affix the decorative sheet. At the same time, after cutting the base material at the adhesive-unapplied part, the side edge corners of the cut base material that are not bonded to the decorative sheet are cut to form a chamfered edge processed part, and this chamfered edge processed part A method for producing a decorative board, which comprises applying an adhesive to the surface of the decorative sheet and pasting the decorative sheet to the adhesive-applied portion, and then bending the decorative sheet and pasting it to the chamfered edge processing portion.