JPS60184847A - Device for changing decorative surface into solid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly involves forming an arbitrary uneven pattern on a thin metal plate having a decorative coating film or a decorative coating made of film by embossing, and applying a three-dimensional effect enhancer to this uneven pattern. The present invention relates to a three-dimensionalization device that visually and easily adds a three-dimensional effect to a mechanical uneven pattern by color, and can easily manufacture a decorative thin metal plate having a deeper uneven pattern surface.

In general, thin metal sheets, particularly organic coated steel sheets, fluorine resin coated steel sheets, stainless steel sheets, aluminum sheets, copper sheets, vinyl chloride steel sheets, etc., are being used for a wide variety of purposes. This is because this type of steel sheet has excellent workability and design, as well as durability. Recently, demand has shifted from the above-mentioned flat steel sheets to thin metal sheets with enhanced fashionability by adding a three-dimensional effect or two-tone color to the surface. Metal thin plates corresponding to this, for example, steel plates on which irregular patterns are formed by embossing, are commercially available.

However, these steel plates were subjected to salt spray tests (J l
5-A-2371), 500 to 1000
Rust and peeling of the paint film were observed on the bent parts over time. In addition, when observing the surface of this type of steel plate under 30x magnification, some of the coating film peels off and wrinkles at the bent parts of concave and convex parts.
There were scratches, cracks, thinning, cracks, and cracks. This is because the embossing line is not suitable. Furthermore, it is difficult to visually enhance the fashionability and three-dimensional effect by simply adding two-tone colors or the like to the decorative surface.

In order to eliminate these drawbacks, the present invention softens the decorative film during embossing to exhibit ductility, eliminates peeling, wrinkles, scratches, and cranks of the decorative film, and easily corrects residual distortion during embossing. This creates a beautiful decorative surface, and visually enhances the three-dimensional effect by applying a three-dimensional effect enhancer that exerts a shadow function from only one direction on at least the sloped surface (side surface) of the convex pattern of the uneven pattern. This paper proposes a three-dimensional device for decorative surfaces.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a three-dimensional decoration device (hereinafter simply referred to as a three-dimensional device) for a decorative surface according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of an example of the above-mentioned device. The upper part shows a pinch roller 2 and a coil A that guide and feed a thin metal plate A (hereinafter simply referred to as a coil) cut to a regular length by a heater section. The decorative film, essentially the coil A itself, is heated to approximately 30 to 60°C to soften the decorative film, and the decorative film may peel off from the coil during embossing, crack, scratch, or crack. It is composed of a heater 3 that prevents the occurrence of The heating method is one of a hot air method, an open flame method, and a hot wire method. A pinch roller 4 feeds the coil A to the embossing roll 5 at a predetermined speed, and also functions to feed the coil A and prevent flapping during embossing. Further, the embossing roll 5 has upper and lower rolls 5a and 5b which have a pattern made of uneven parts of the male part formed on the outer peripheral surface.
to create an arbitrary uneven pattern on the coil A, for example, the second
The uneven pattern shown in figures (al and (bl) is applied, and the gears of the upper and lower rolls 5a and 5b are determined by the height of the uneven pattern and the thickness of the coil A.The embossing process is performed using a leveler. This is to correct the residual strain existing in the processed coil A', and the upper roller 6a1.6a2.6a
3,... 6a, n (shown up to 6a3 in Figure 3), T roller 6b+, 6b2.6bg, 6b,
(6b4 is shown in FIG. 3) in a zigzag manner, and the gap 7 between the upper roller group 6a and the lower roller group 6b can be adjusted. Reference numeral 8 denotes a tensioning pinch roller which rotates faster than the embossing roll 5 and allows the coil A' to pass through the steps of the embossing roll 5 and the level 56 while being stretched (under tension). Reference numeral 9 denotes a three-dimensional effect promoter applicator (hereinafter simply referred to as a coating machine) that applies a three-dimensional effect enhancer D (hereinafter simply referred to as an enhancer) from only one direction of the uneven pattern, and as shown in Fig. 4 Ta) to (C1
Apply the promoter only to the surfaces where the coating film 1 direction σ of the promoter collides with the traveling direction β of the coil A′ at the tops of the concave pattern surface B and the convex pattern C and the side surfaces of the convex pattern as shown in . It is applied. The distribution state of the promoter E on the uneven patterned surface is in the form of a film, dots, lines, stripes, etc. Note that the angle θ1 of the applicator 9 is arbitrarily selected depending on the requirement for a three-dimensional effect. Of course, since the promoter is applied to the uneven pattern surface from only one direction, it not only greatly enhances the three-dimensional effect, but also
It can be formed in such a way that it gives the illusion that the uneven pattern looks reversed depending on the viewing direction.

Reference numeral 10 is for wiping off the promoter present on the top surface of the convex pattern with a wiping machine to expose the coil A' itself or the decorative coating. To explain further, the wiping machine 10 has 1
A stage or a plurality of stages (not shown) are arranged in parallel to gradually wipe away the promoter from the above-mentioned areas. As a specific example, it consists of a wiping roller lOa, a hack-up roller 10b, a feed roller IOC, and a doctor blade 10d, and a solvent E is fed to the feed roller 1°C, and the promoter adhering to the surface of the wiping roller 10a is In addition to rinsing away the dirt, a new wiping surface is repeatedly created.

Reference numeral 11 is a drying oven in which the top surface of the convex pattern of the concave and convex pattern surface is dried, and the promoter is also dried or baked.

Next, the operation of the three-dimensional device according to the present invention will be explained. The coil A cut into 10 pieces is fed one by one to the heater 3 via the pinch roller 2.
The cosmetic film is heated to 60° C. to soften it and then fed to the pinch roller 4. Next, the coil A sent out from the pinch roller 4 is sent to the embossing roll 5, and the coil A is given a concave pattern B as shown in FIGS. 2(a) and 2(b), for example.
, a convex pattern C is formed.

At this time, the embossing process is performed while tension is applied to the coil A. The coil sent out from the embossing roll 5 is then corrected by a leveler to remove any residual strain generated during embossing in the tensioned state between the embossing roll 5 and the tensioning pinch roller 8.
It will be sent to Note that the force relationship between the embossing roll 5 and the tensioning pinch roller 8 with respect to the coil A' is such that when the rotation of the embossing roll 5 is set as the target, the rotation speed of the embossing roll 5 is slow and the rotation of the tensioning pinch roller 8 is fast. The embossing, flattening, and residual strain removal are performed while the coil A' is in tension. In addition, pinch roller 4 and embossing roll 5
If the speed of pinch roller 4 is slow between
will no longer flap around at the entrance of embossing roll 5.

In addition, by setting the speed difference between the tensioning pinch roller 8 and the embossing roll 5, or between the pinch roller 4 and the tensioning pinch roller 8, the coil A may shift during embossing and the pattern may become unclear. , there will be no double bite. In addition, since the leveler 6 is in a state where tension is applied in one direction, the uneven pattern B,
C can be easily flattened without deforming it, and residual strain can be easily released. Of course, the tension in the above region is within the range of force that does not change the embossed pattern. The coil sent out from the tensioning pinch roller 8 is coated with a concave-convex pattern by an applicator 9 with a promoter that differs from the decorative film in at least one of density, hue, and saturation.
Coat the entire surface of fj with a spray gun so as to face the traveling direction of the coil λ at an angle of θ1 = 45°, and apply it to each uneven pattern as shown in FIGS. 4 (al to (C)), Of course, at this time, the distribution of the promoter in each part of the concave pattern B and convex pattern C may be uniform, non-uniform,
This is a mixed distribution, or a distribution where the density gradually changes. The coil λ having such an uneven decorative surface is sent to a wiping machine 10 to wipe off the promoter present only on the top surface of the convex pattern, and sent to a drying oven 11.
Drying or baking are equivalent.

The example coil A was a colored galvanized iron plate (with a thickness of 0.27 mm).
J I 5-G-3312), the temperature of the heater 5 was varied from 10 to 80°C, and the embossing depth was 0.9+
u, the ratio of concave pattern B to convex pattern C was 1:1, and the embossing speed was 38 m/min. Also,
The speed difference between the pinch roller 4 and the tensioning pinch roller 8 was about 3%. Furthermore, as a promoter, a paint made of black alkyd resin was applied with a spray gun, preheated at 90°C for 5 minutes in the drying oven 11, and baked at 200"C for 1 minute. The paint for coil A was Assume that it is white and uses alkyd resin as a vehicle.Then, the temperature of the surface of the coil A', the so-called decorative film (paint film in this case), is changed from 0 to 80°C. The states of peeling, crack ◎, crank θ, shrinkage ○, and flaw ■ are shown in a line graph in FIG.

Further, the flatness and degree of residual strain (pecocchi) of the coil A' sent out from the leveler (2) were visually observed. The inspection methods include (1) the apparent number of pekokki present per meter of coil A', (2) the distribution state of pekokki, and (3) the height difference of pekokki (designed irregularities). (difference between the bottom and top of the part and the actual bottom and top) , (
Observations regarding the appearance of the entire quadruple are shown. Furthermore, (5)
The three-dimensional effect of the uneven pattern surface is visually observed when the coil λ is propped up in the advancing direction and in the opposite direction.

Comparative Example Coil A as described above was embossed in the previous process, and then a paint of a color different from that of the coil was applied using a spray gun from directly above the so-called uneven pattern surface using the usual method. The dried one was used as a test piece.

Further, the results of a salt spray test (1500 hours) of the coils formed in the example (coil A when the decorative coating was heated to 50° C.) and the comparative example were as shown in the table below.

What has been described above is only one embodiment of the three-dimensionalization device according to the present invention, and the number of stages of the rollers with level > 6 can be increased or decreased depending on the distribution ratio of the uneven patterns B and C, and the length of the rollers can be adjusted at the entrance. They can also be arranged in a widening shape by increasing the length from the beginning toward the exit. Also, add a 6th promoter to the coil
It is also possible to apply with the applicator 9 from the directions shown in Figures (al to (C)).In other words, (Figure 81 shows the angle θ2, θ3 from the side with respect to the traveling direction β of the coil A', or both The angle θ2
, θ3 is smaller than 90° and 0°, so-called coil A
This also includes the case where the height G is maintained and the surface is parallel to the decorative surface of '. In addition, Figure (b) shows a coil formed with a double width, and finally divided into two parts and the ends formed, and the direction of application of the promoter by the applicator 9 is opposite on the left and right sides. It can also be applied from directly above the coil λ, as shown in Figure (C).

In addition, (in Fig. 81 and Fig. fC1, when the conveying speed of coil A' is 5 to 10 m/min or more, the level difference of the uneven pattern is 0.5 m/min or more.
It is necessary that there be more than 100 yen. Furthermore, pinch roller 4
If the coil A is not extremely loose or the distance between the top of the heater section and the embossing roll 5 is long, simple guide pieces can be installed on both sides of the coil A to remove it.

As described above, according to the three-dimensional device of the present invention, there is no change in the force applied to the coil in the embossing zone, and embossing can be performed under constant tension at all times, so the embossed pattern does not shift during processing. , a beautiful uneven pattern can be formed. ■Because the decorative coating was heated to make it soft enough for embossing, the decorative coating peeled off from the steel plate during embossing, causing wrinkles, cracks, scratches, and cracks. It can form beautiful cosmetic coatings without smearing, as well as cosmetic coatings with excellent weather resistance, scratch resistance, and chemical resistance. ■Residual distortions caused by distortions formed by embossing can be easily and sufficiently removed by correction under tension, making it possible to form a concave-convex pattern with no distortion and full of three-dimensional effect.

■The lines are arranged in a straight line and the process uses a flow that does not apply excessive force to the coil, allowing for smooth embossing. ■Since the coil is heated and embossed, it is not affected by the working environment. ■The straight line allows for high-speed embossing. ■The top surface of the convex pattern of the concave-convex pattern is made into a highly reflective surface, and at least the sides of the convex pattern are coated with a promoting agent that functions like a shadow, which further visually enhances the three-dimensional effect created by the mechanical concave-convex pattern. This allows for unprecedented three-dimensionality and depth. ■The three-dimensional effect enhancer can be easily applied after the uneven pattern surface is formed.

■Since the coil is a cut plate, it can be made into a decorative surface that is smoother and does not twist. It has the following characteristics.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of a three-dimensional decorative surface device according to the present invention, FIGS. 2(a) and (b) are explanatory diagrams showing a part of the uneven pattern, and FIG. 3 is a diagram showing one example of the device. FIG. 4 is a perspective view showing an example of a leveler with two configurations. Characteristic diagram, Figure 6 (a)
-(C) are explanatory diagrams showing other embodiments. 1.--heater, 5...emboss roll, ball! ...Leveler, 8...Pinch roller for tension, thin plate, D...
Three-dimensional effect enhancer. 5th a door 6th broom (tL) (b)

Claims (1)

[Claims] (1) In an apparatus for three-dimensionalizing the decorative surface of a thin metal plate cut to a regular length, a heater unit includes a pinch roller that feeds the thin metal plate and a heater that heats the thin metal plate to about 30 to 60°C; An enforcing roll that applies an arbitrary uneven pattern to the thin metal sheet fed from the heater section, a leveler placed after the roll, a tensioning pinch roller placed at the outlet of the leveler, A three-dimensional effect promoter applicator that applies the three-dimensional effect enhancer from only one direction, a wiping machine that wipes off the three-dimensional effect enhancer existing on the top surface of the convex pattern of the uneven pattern surface, and a dryer that dries the three-dimensional effect enhancer. A device for creating a three-dimensional decorative surface, characterized by arranging them in series.