JPH0316905B2 - - Google Patents

Description

[Detailed description of the invention] The present invention prints an arbitrary pattern on the decorative surface of a metal plate material, and then embosses a concave-convex pattern with a predetermined depth and a predetermined width to improve design, three-dimensional effect, and durability. The present invention relates to an apparatus capable of manufacturing improved panels at high speed. Many panels made of metal sheets are used as interior and exterior wall materials for buildings. however,
This type of panel was only commercially available as a flat panel or simply embossed.
As a result, this type of panel lacked three-dimensionality, design, and weather resistance, and was only able to be manufactured as a flat panel with a cold decorative surface. Furthermore, in embossing, cracks occur in the coating film on the decorative surface, etc., and large distortions appear, and the panel itself has the disadvantage of twisting or warping. Also,
When forming this type of panel, the drying time of the printing section becomes the production capacity of the entire device, and conventional drying means use heat, which has the disadvantage of requiring about 10 minutes for drying. In order to eliminate the above-mentioned drawbacks and meet the above-mentioned demands, the present invention processes a board material into an arbitrary uneven pattern, and then applies a decorative coating film, such as clear, to the surface of the board material to prevent cracks in the decorative coating film. prevent,
This prevents changes in the printed pattern, and provides the panel with sufficient three-dimensionality, design, and natural feel due to the embossed shading on the decorative surface and the shading drawn on the printed pattern. This paper proposes an apparatus that can significantly shorten the drying time of panels and produce panels with beautiful finished surfaces. An embodiment of the panel manufacturing apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic configuration diagram of the above-mentioned apparatus, where 1 is a panel sheet material delivery section, and an uncoiler 2 with a brake and a pinch roller 3 are equipped with a thin metal sheet A (hereinafter simply referred to as sheet material A), which is a so-called panel sheet material. Consisting of plate material A
This is to continuously feed the water to the next process.
Reference numeral 4 denotes a printing section, which is composed of a back-up roller 5 and a coating roller 6, and ink B consisting of one color or multiple colors is applied to the decorative surface of the plate material A, in this case, the entire surface.
An arbitrary pattern is printed using any of the following methods: gravure printing, offset printing, screen printing, letterpress printing, and lithographic printing. Note that printing is performed on any decorative surface. 7 is a device for applying transparent paint or color paint (hereinafter simply referred to as clear) C to the surface of the decorative surface when the ink B on the decorative surface is not dry; for example, a roll coater or a curtain floor. Kota,
It is a single object such as a spray. Reference numeral 8 comprises rollers 9 for conveying the plate material A in the catalyst vapor chamber and a cover 11 for holding the catalyst 10 in a substantially hermetically sealed state. In particular, the catalyst 10 is an amine-based catalyst, such as various organic amine compounds, such as secondary or tertiary amines such as triethylenediamine (trade name: Dabco), aromatic diamine, dimethylhexadecylamine, ethylamine, etc. One type of steam is used to fill the cover 10 and is useful for reaction-curing Clear C in a short period of time. Of course, the catalyst vapor chamber 8 has a safety structure that takes sufficient care of pressure and ventilation. 12 is an embossing machine with upper and lower rolls 13,
The outer peripheral surface of the plate 14 has male and female uneven patterns that engage with each other, and is configured to be supported so that it can be pressurized depending on the thickness of the plate material A, the depth of the unevenness, etc. . 15 is a molding machine, for example, 10 stages, 20
The plate material A has a number of stages, such as 32 stages, and the plate material A is, for example,
It is intended to be formed into a roughly gutter shape. Further, the mechanism allows molding width to be either single width or double width. In addition, the molding machine 15
Since it is formed into a gutter shape in order along the flower diagram from the entrance to the exit, distortion during embossing,
The deformation can be released along the width direction of the plate material A and the transport direction, and the residual distortion and deformation can be minimized. Reference numeral 16 denotes a cutting machine which is installed as required, and is either a flying cutter, a rotary type, a press type, or the like. 17 is a conveyor. Next, the operation of the panel manufacturing apparatus according to the present invention will be explained. Now, as plate material A, a 0.27 mm thick primer steel plate (width 1000 mm) wound around a 1000 m bobbin was attached to uncoiler 2. The type of ink B consists of water-based acrylic varnish (solid content 40%) and pigment, which is printed by a gravure printing machine, and the clear C is a polyurethane resin prepared in the catalyst vapor chamber 8 . As the catalyst 10, triethylenediamine is prepared,
Assume that panel D as shown in FIG. 2 is manufactured. First, the starting end of the plate material A is guided to the pinch roller 3, and then fed to the printing section 4 . The printing section 4 prints ink B on the decorative surface of the board material A in a woodgrain pattern as shown in FIG. 3a. Next, as shown in Figure 3b, clear C is applied to the decorative surface on the painted area 7.
(roll coater) and fed to the heating section 8 . In the catalyst vapor chamber 8 , Clear C is reacted and cured in a short time by the catalytic action of triethyldiamine.
It is fed to the embossing machine 12 . In the embossing machine 12, while the clear C has not yet been cooled, an arbitrary pattern is applied to the entire width, a fixed width, or a part of the plate material A, as shown in FIG. . In the molding machine 15, the second
It is formed into the cross-sectional shape shown in the figure, and a strip-shaped panel D is continuously sent out from the outlet, cut into a predetermined length by a cutter 16, and transported by a conveyor 17 to form a panel D. be. Therefore, the decorative surface of Panel D manufactured in this way was subjected to a salt spray test (JIS-Z-2371,
When the test was carried out for 1000 hours, no rust was observed at all. This is the result of Clear C's greatly improved wear resistance during embossing and molding. As a comparative example, when the decorative surface of plate material A without Clear C was tested in the same way, cracks were observed in the finished coating film in some areas during embossing, and cracks were observed in even more areas after molding. The salt spray test was poor as a result of deeper cracks. Furthermore, in the comparative example, the printed pattern on the decorative surface was directly exposed during embossing and molding, resulting in a lack of aesthetics, but the example did not have such an appearance. Furthermore, when a heater was used in place of the catalyst vapor chamber 8 , the panel manufacturing time was about 3 to 10 times longer than in the above embodiment, and the finished surface was not smooth. What has been described above is only one embodiment of the apparatus according to the present invention, and it is also possible to install a preheater at the position indicated by the dashed line in FIG. 1 to further eliminate the adverse effects of embossing. . Also,
A liberator 18 is placed between the embossing machine 12 and the molding machine 15.
can also be installed. As described above, according to the panel manufacturing apparatus according to the present invention, an arbitrary pattern can be formed on the decorative surface of commercially available plate materials, for example, surface-treated steel plates such as color steel plates, primer steel plates, pre-coated plates, aluminum plates, copper plates, etc.
Color or multicolor printing and finishing paint on top of it,
For example, because it is coated with a transparent clear material, it is possible to produce panels with clear patterns that are rich in shadows and colors, and that are also highly weather resistant. After printing on the board material, we emboss it at any depth and with any uneven pattern, which doubles the three-dimensional effect.Furthermore, since the printed pattern is covered with clear, it will not shrink during embossing or molding. It is characterized by the ability to produce panels with excellent corrosion resistance and without causing significant deterioration in appearance due to bending or stretching. Since embossing can be applied only to the required width of the plate material, distortion and deformation of the base material can be minimized. It is characterized by being formed into a gutter-like shape immediately after embossing, allowing strain and deformation caused by embossing to escape in the width and length directions, thereby suppressing dimensional deformation and unevenness due to residual strain. The panel manufacturing time can be reduced by about 2 to 10 times compared to conventional methods, and it also has the advantage of producing a clear finished surface with a beautiful and uniform thickness.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of a panel manufacturing apparatus according to the present invention, and FIG. 2 is a perspective view showing an example of a panel manufactured by the above-mentioned apparatus according to the present invention.
FIGS. 3a to 3c are explanatory diagrams showing the manufacturing process of the panel. 1 ... Plate delivery section, 4 ... Printing section, 8 ... Catalyst vapor chamber, 12 ... Embossing machine, 15... Molding machine.

Claims (1)

[Claims] 1. A board material delivery section consisting of an uncoiler and a pinch roller, a printing section that directly prints an arbitrary pattern of one color or multiple colors on the decorative surface of the board materials continuously fed from the delivery section, and the printed decorative surface. A coating section where a polyurethane resin transparent paint is applied to the decorative surface, a catalytic steam chamber where the transparent paint applied to the decorative surface is reacted and solidified, and a predetermined area of the plate material that is continuously fed from the steam chamber is embossed. It is equipped with an upper and lower roll type embossing machine with a concavo-convex pattern on the outer circumferential surface, and a forming machine that continuously forms the embossed plate material into a predetermined shape. A panel manufacturing device characterized in that the panel is arranged in a manner that