JPS60184846A - 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 plates to steel plates with enhanced fashionability by adding a three-dimensional effect, two-tone color, etc. to the surface. As a steel plate corresponding to this, for example, a steel plate on which an irregular pattern is formed by embossing is commercially available.

However, these steel plates were subjected to salt spray tests (JI
5-A-2371), 500 to 100
Rust and peeling of the paint film were observed at the bent portion after 0 hours. In addition, when observing the surface of this type of steel plate with 30 times magnification, you can see that there are recesses,
If the paint film is partially peeled off at the bent part of the convex part, wrinkled, scratched, cracked, thin, or
A crank was occurring. This is because the embossing line is not suitable. Furthermore, simply adding two-tone colors or the like to the decorative surface has the disadvantage that it lacks the ability to visually enhance fashionability and three-dimensionality.

In order to eliminate such defects, the present invention softens the decorative film during embossing to exhibit ductility, and 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 prevent the decorative film from peeling off from the steel plate during embossing, cracking, scratching, or cracking. 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. In addition, the embossing roll 5 has a male part with an uneven pattern formed on its outer peripheral surface, and the lower rolls 5a and 5b are engaged with each other to form an arbitrary uneven pattern on the coil A, for example, as shown in FIGS. The gap between the upper and lower rolls 5a and 5b is determined by the height of the uneven pattern and the thickness of the coil A.■ is present on the coil embossed with a leveler. This is to correct residual distortion, and the upper roller 6a1.6a 21.5a
, 3,...6a, 11 (up to 6aa is shown in Fig. 3), lower roller 6b1.6b2.6b9...6b, (
(6b4 is shown in FIG. 3) in a zigzag pattern, 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 embossing roll 5 and the leveling process under tension (under tension).

9 is a masking material applicator (hereinafter simply referred to as a film applicator) that uses a roll coater and a brush to coat the tops of the convex patterns of concave and convex patterns B and C as shown in Figure 2 (ta) and (bl). A masking material D for masking only a surface, such as a paint or a film, is used to coat a film. 10 is a three-dimensional effect enhancer coating machine (hereinafter simply referred to as a coating machine) for applying a three-dimensional effect enhancer (hereinafter simply referred to as an enhancer). ) E is applied only from one direction of the uneven pattern, and the direction of application of the promoter E is applied on the top surface of the concave pattern surface B and the convex pattern C and the side surface of the convex pattern as shown in FIG. 4 (8) to (C). The promoter E is applied only to the surface where d collides with the traveling direction β of the coil.The promoter E is distributed in the shape of a film, dots, lines, stripes, etc. on the uneven pattern surface. Incidentally, the angle θ1 of the applicator 10 is arbitrarily selected depending on the requirement for a three-dimensional effect.Of course, since the promoter E is applied to the uneven pattern surface from only one direction, the three-dimensional effect is greatly enhanced. Not only that, but also that the uneven pattern can be formed in such a way that it gives the illusion that the uneven pattern appears reversed depending on the viewing direction.

Reference numeral 11 is a device for wiping off the masking material and promoter E present on the top surface of the convex pattern to expose the coil itself or the decorative coating film. To explain further,
The wiping machine 11 is arranged in one stage or in a plurality of stages (not shown) in parallel, and gradually wipes off the masking material and promoter E in the above-mentioned areas. Specific examples include wiping roller lla, backup roller llb, feed roller 11c, and doctor blade 1.
．． 1d, and a sludge F is fed to the feed roller 11C to wash away the masking material D and promoter E adhering to the surface of the wiping roller lla, and to repeatedly form a new wiping surface. Reference numeral 12 is a drying oven in which the top surface of the convex pattern of the concavo-convex pattern surface is dried, and the promoter E is also dried or baked.

Next, to explain the operation of the three-dimensional device according to the present invention, the coil A cut into 10 shaku pieces is fed one by one to the heater 3 via the pinch roller 2.
The decorative coating 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 fed to the embossing roll 5, and the coil A is Concave pattern B as shown in Figure 2 (a) and (b)
, a convex pattern C is formed.

At this time, the embossing process is performed while tension is applied to the coil A. Then, the coil sent out from the embossing roll 5 is corrected by a level 56 for residual strain generated during embossing in the tensioned state between the embossing roll 5 and the tensioning pinch roller 8, and then sent to the coating machine 9. It is something. In addition, embossing roll 5
The force relationship on the coil between the tensioning pinch roller 8 and the tensioning pinch roller 8 is set such that the rotation of the embossing roll 5 is slow and the rotation of the tensioning pinch roller 8 is fast, based on the rotation of the embossing roll 5. Embossing, flattening, and removal of residual strain are performed while the coil 8 is in tension. In addition, pinch roller 4 and embossing roll 5
If the speed of pinch roller 4 is slow between
However, when the embossing roll 5 is filled with white, it gets 8' and disappears. In addition, a tensioning pinch roller 8 and an embossing roll 5 are also provided.
, or by setting the speed difference between the pinch roller 4 and the tensioning pinch roller 8, the coil A may shift during embossing, making the pattern unclear, or
No more biting into it. Further, since the leveler 6 is in a state where tension is applied in one direction, the uneven patterns B and C can be easily flattened without deforming them, and residual strain can be easily released. Of course, the tensicon within the above range is within the range of force that does not change the embossed pattern. Further, the film applicator 9 applies a masking material to the top surface of the convex pattern C. Next, the coil A″ sent out from the coating machine 9 is coated with the coater 1
At least 1 of the makeup film, density, hue, and saturation by 0
Adding promoters E with different values to the entire surface of the uneven pattern, θ1=4
The spray gun is used to apply and adhere to each uneven pattern as shown in FIGS. 4(a) to (C1) at an angle of 5° with respect to the traveling direction of the coil A'. Of course, at this time, the distribution of the promoter E in each part of the concave pattern B and the convex pattern C may be uniform, non-uniform, a mixed distribution, or a distribution in which the density gradually changes. Coil A' having a decorative surface is wiped by wiping machine 1.
1, the masking material D1 and the promoter E present only on the top surface of the convex pattern are wiped off, and the masking material D1 and the promoter E are sent to the drying oven 12, where they are dried or baked in the same manner.

The example coil A was a colored galvanized iron plate (J
i 5-G-3a i 2), the temperature of the heater 3 was varied from 10 to 80°C, and the embossing depth was 0.9
m, 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, a synthetic resin paint as a masking material and a paint made of a black alkyd resin as a promoter E were applied with a spray gun, preheated at 90°C for 5 minutes in a drying oven 12, and baked at 200°C for 1 minute. Ta.

The paint for coil A is white and uses alkyd resin as a vehicle. Then, the temperature of the surface of coil A, the so-called decorative film (in this case, the paint film), is set to 0 to 0.
The peeling of the decorative coating film when the temperature was changed to 80° C., including cracks ◎, cracks ○, shrinkage ■, and scratches ■, is shown in a line graph in FIG. Further, the flatness and degree of residual strain (pekokki) of the coil X sent out from the leveler 6+ were visually observed. In addition, the inspection method is (1) 1 of coil
The apparent number of pekokki present per meter, (2
) distribution of pekokki, (3) height difference of pekokki (difference between the bottom and top surfaces of the designed uneven part and the actual bottom and top surfaces)
, (4) Observations regarding the overall appearance are shown.

Furthermore, (5) the three-dimensional effect of the concave-convex pattern surface is visually observed when the coil A' 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-dimensional device according to the present invention, and the number of stages of the rollers of the leveler (■) may be increased or decreased depending on the distribution ratio of the uneven patterns B and C, and the length of the rollers may be changed from the entrance to the exit. It is also possible to extend the length one after another toward the end and arrange them in a widening shape. Further, it is also possible to apply the promoter E to the coil λ using the applicator IO from the direction shown in FIG. The promoter E is applied at either angle θ2, θ3 or in combination, and 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 the surface. In addition, (Fig. b1 shows the coil X formed with a double width and finally divided into two and the ends formed, and the application direction of the promoter E of the coating machine 10 is opposite to the left and right sides α.
, α'. Figure +01 can also be applied from directly above the coil X.

In Figures +81 and +01, the conveying speed of coil A' is 5 to 10 m/min or more, and the step difference in the uneven pattern is 0.5 m/min.
It is necessary that there be more than u. Furthermore, pinch roller 4
Remove the coil A from above the heater part using the embossing roll 5.
It is also possible to feed the material directly to the material, and to arrange simple guides on both sides along the way. Alternatively, a magnifying glass or a video camera may be installed at the position indicated by the dashed line in FIG. 1 to more clearly monitor the decorative surface after embossing.

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 film is heated to make it soft enough for embossing, the decorative film may peel off from the steel plate during embossing, or the decorative film may wrinkle, break, scratch, or crack. It is possible to form beautiful 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 promoter that functions like a shadow, so the three-dimensional effect of the mechanical concave-convex pattern is further visually enhanced by the facilitator. It can bring out 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 device for creating a three-dimensional decorative surface according to the present invention, FIG. A perspective view showing an example of the leveler structure, Fig. 4 fa) to (C1 is an enlarged explanatory view showing the middle of forming a decorative surface, and Fig. 5 is a characteristic showing the temperature of the decorative film and the occurrence of crank etc. Figure, Figure 6(a)
-(C) are explanatory diagrams showing other embodiments. Top: Heater, 5: Emboss roll, Work: Refiller, 8: Pinch roller for tension, 9: Masking material applicator, 1o: Three-dimensional masking material, E...
- Three-dimensional effect enhancer. ((L) (b) Figure 4 Figure 5 Shame Figure 6

Claims (1)

[Claims] +11 In an apparatus for three-dimensionalizing the decorative surface of a thin metal plate cut to a regular length, a heater section comprising 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 embossing roll that applies an arbitrary uneven pattern to the thin metal sheet fed from the department, a leveler placed after the roll, a tensioning pinch roller placed at the outlet of the leveler, and a convex pattern top of the above uneven pattern. A masking coating machine that applies a masking film to a surface, a three-dimensional effect promoter coating machine that applies a three-dimensional effect promoter from only one direction to an uneven patterned surface having the masking film, and a convex pattern top surface of the uneven patterned surface. A device for creating a three-dimensional decorative surface, characterized in that a wiping machine for wiping off a masking test material and a three-dimensional effect promoter present in the image, and a dryer for drying the three-dimensional effect enhancer are arranged in series.