JPS6117269B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a new method for manufacturing a ceiling board for use as a ceiling panel, and the present invention relates to a method for manufacturing a ceiling board for use as a ceiling board, which involves coating the surface of a base material such as paper or cloth with a resin containing a foaming agent. After gelling by heating and cooling with a cooling device, wood grain printing is performed on the surface of the foaming agent-containing resin using a light-colored ink for printing non-keratinized layers containing a foaming agent inhibitor and a dark-color ink for printing keratinized layers that does not contain a foaming agent inhibitor. The resin is then passed through a heating furnace to decompose the foaming agent contained in the resin in the areas printed with dark ink, and then cooled to produce a three-dimensional wood grain sheet that looks like a natural wood board. Separately, the ceiling board body is constructed by fixing the backing to a substrate such as plywood or cutting plasterboard into the required shape, and the above-mentioned wood grain sheet is attached to the surface of the ceiling board body using adhesive. The gist of this method is to attach the wood grain sheet, bend the periphery of the wood grain sheet, and attach it to the wood end of the ceiling board main body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. A flame-retardant paper 1 wound into a roll is rolled out, and a polyvinyl chloride resin 2 containing a foaming agent as described later is applied to the upper surface of the flame-retardant paper 1. After being coated with a coater 3 and passed through a drying oven 4 at 120° C. to 200° C. to gel it and cooled with a cold air device 5, it is wound into a roll, and the wound material is again fed out. A light brown ink 6 for printing the non-keratinized layer containing a foaming agent inhibitor on the surface of the polyvinyl chloride resin 2 containing a foaming agent, a dark brown ink 7 for printing the cornified layer not containing it, and an intermediate for printing the intermediate cornified layer not containing it Wood grain printing is performed using printing machines 6', 7', and 8' using brown ink 8, and then the inks 6, 7, and 8 are dried and wound up into a roll, and the rolled up material is further unrolled. 150℃~250℃ heating furnace 9
The foaming agent contained in the resin 2 is passed through the
A wood grain sheet 11 having convex portions in the stratum corneum and intermediate stratum corneum is formed by decomposing the printed portions using the dark brown ink 7 and the intermediate color ink 8 and then cooling them with a cooling air device 10. is rolled into a roll and prepared for the process described below.

Separately, the backing 13 is fixed vertically and horizontally to the plywood 12 to form the ceiling board main body 14, and this ceiling board main body 14 is bonded to the surface of the ceiling board main body 14 while being transported by the conveyor 15... An adhesive 17 is applied by the adhesive application device 16, and the above-mentioned wood grain sheet 11 is fed onto the adhesive-applied surface, and is pressed onto the surface of the ceiling board main body 14 by pressing rolls 18, 18' to stick it. Thereafter, it is cut with a cutter 19, and then both side edges 11' of the wood grain sheet 11 are bent and pasted to the wood end of the ceiling board body 14 to obtain a finished product.

In addition, the above description of polyvinyl chloride resin with a blowing agent is as follows: PVC resin 100 parts Plasticizer (DOP) 60 parts Blowing agent 4 parts Stabilizer (metallic fatty acid salt) 2 parts Filler (charcoal) Small amount Coloring agent (titanium) ) is a small amount.

As described above, the present invention is of course highly effective in making ceiling panels with raised wood grains (keratinized layers) in an extremely simple process. A wood grain print is applied to the surface of the resin using a light color ink for printing the non-keratinized layer containing a foaming agent inhibitor and a dark color ink for printing the horny layer without the foaming agent, and then passed through a heating furnace to form the foam contained in the resin. Since the agent is decomposed at the place where the dark ink is printed, there is no misalignment between the wood grain print (keratinized layer print) and the protrusions on the wood grain, and a reliable product can be reliably provided. Not only does the ceiling board obtained by the present invention have a convex wood grain area (keratinized layer), it is different from the conventional method of this type in which paper with wood grains printed on it is laminated to the surface of the ceiling board body. Compared to ceiling boards, the wood has a remarkable natural quality and has a high commercial value, and the foam layer has heat insulation and sound deadening effects, making it ideal as a ceiling board.

In the text, the keratinized layer refers to the hard part of wood that forms annual rings, that is, the part that forms wood grains, and the non-keratinized layer refers to the part that forms the growth rings in wood. This refers to the soft part that

[Brief explanation of the drawing]

The figures show an embodiment of the method for manufacturing a ceiling board according to the present invention, in which Fig. 1 is a side view showing the process of coating flame retardant paper with resin, Fig. 2 is a side view showing the process of printing, Figure 3 is a side view showing the foaming process, Figure 4 is a schematic side view showing the process of attaching the wood grain sheet to the ceiling board body, and Figures 5 to 7 are enlarged cross sections of the product in each process. 8 is a perspective view of the finished product seen from the front, FIG. 9 is a perspective view of the finished product seen from the back, and FIG. 10 is a sectional view taken along line A-A in FIG. 1...Flame retardant paper, 2...Polyvinyl chloride resin with foaming agent, 3...Coater, 4...Drying oven, 5...
...Cold air device, 6...Light brown ink for non-keratinized layer printing, 7...Dark brown ink for cornified layer printing, 8...Medium brown ink for cornified layer printing, 6', 7', 8'... …
Printing machine, 9...Heating furnace, 10...Cold air device, 11
... Wood grain sheet, 11' ... Peripheral part of wood grain sheet, 12 ... Plywood, 13 ... Backing board, 14 ... Ceiling board body, 15 ... Conveyor, 16 ... Adhesive application device, 17 ... Adhesion agent, 18, 18'...press roll, 19...cutter, 20...dryer.

Claims (1)

[Claims] 1. The surface of a base material such as paper or cloth is coated with a resin containing a foaming agent, and the foaming agent-containing resin is heated to gel, and then cooled by a cooling device. Wood grain printing is performed using a light-colored ink for printing the stratum corneum and a dark-colored ink for printing the stratum corneum that does not contain it, and then passed through a heating furnace to apply the foaming agent contained in the resin to the areas printed with the dark-colored ink. A three-dimensional wood grain sheet that looks like a natural wood board is produced by decomposing the sheet and cooling it. Separately, the backing is fixed to a substrate such as plywood, or the plaster board is cut into the required shape. A ceiling comprising a ceiling board body, the above-mentioned wood grain sheet is pasted on the surface of the ceiling board body with an adhesive, and the periphery of the wood grain sheet is bent and pasted to the wood end of the ceiling board body. Method of manufacturing the board.