JP2001055825A - Metal surface plate for siding material and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal surface plate for metal siding material allowing raised decorative parts to be distinguished from joint parts through clear boundary lines and providing an excellent cubic effect. SOLUTION: A plurality of decorative parts 6 divided by joint parts 4 and raised are provided, and recessed and projected parts are formed by embossing finish on the decorative parts 6. The edge parts of each decorative part 6 adjacent to the joint part 4 is recessed or protruded with a smaller height difference than that of the recessed and projected parts formed at the center part (inside 3 of decorative part) of the decorative part 6 or formed flat. The edge part of the decorative part 6 recessed and protruded with small height difference or formed flat is set in the range of 1 to 5 mm from the joint part 4 to the inside of the decorative part 6. When recessed and projected parts are provided at the edge part of the decorative part 6, the height difference of the recessed and projected parts should desirably be set to 0.5 mm or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal face plate for a siding material excellent in design used for a wall surface or an exterior material of a building and a method for producing the same.

[0002]

2. Description of the Related Art A metal siding material used for an outer wall or the like is inferior in design property when the surface is flat and easily gives an inexpensive image. Therefore, a method of changing the surface with an embossed pattern, special coating, or the like has been adopted. But,
The embossed pattern formed by processing using an embossing roll is less than 2 mm, and is poor in three-dimensional appearance. Also, even if a stone-grained special coating is applied, the surface does not have a three-dimensional effect, so that it does not appear as a fake area. Therefore, the present applicant holds the metal band plate at the joint portion and press-molds between the template and the soft elastic body to attach an overhang portion corresponding to the pattern formed on the template to the metal band plate. The method was introduced in JP-A-7-39963. According to this method, a complicated deeply carved pattern can be easily applied. Furthermore, Japanese Patent Application No. Hei 10-51
No. 32 proposes a method of manufacturing a metal siding material that enables the formation of a deeply carved pattern and enhances discrimination from an embossed rolled metal strip. The metal siding material is manufactured, for example, on the manufacturing line shown in FIG. As the metal strip 10 as the original plate, a steel plate having a thickness of 0.2 to 0.5 mm, a galvanized steel plate, an Al-Zn plated steel plate, an aluminum plate, a stainless steel plate, or the like is used. Metal strip 1
0 is paid out from the payoff reel 21 and the pinch roll 2
After that, the paper is intermittently fed into the press forming device 30 by the feeder 23 through the feeder 23. After press-forming a predetermined portion of the metal strip 10, the metal strip 10 is sent out at a predetermined pitch, and the subsequent portion is similarly press-formed.

As shown in FIG. 2 (a), a press forming apparatus 30 has a decorative ridge 31a formed on a portion corresponding to a plurality of bricks 5 (FIG. 3) of a metal face plate for a metal siding material. There is provided a template 31 which is separated by a flat part 31b for forming joints between the protruding parts 31a. On the top surface of the ornamental raised portion 31a, for example, an uneven pattern 31c expressing the brick surface is provided. As shown in FIG. 2B, the metal strip 10 fed between the mold plate 31 and the upper plate retainer 34u and the soft elastic body 32, the joint retainer plate 33, and the lower plate retainer 34d as shown in FIG. The metal plate 11 is pressed according to the shape of the template 31, and the joints 4 and the decorative portions 6 are formed. Next, after the fitting portion and the fitting receiving portion were formed at both ends in the width direction in the roll forming device 24, the foamable resin 13 was injected into the back surface side through the preheating furnace 25 and was sent out from the payoff reel 26. The back material 14 is bonded. Next, the foamable resin 13 heated and foamed in the heating furnace 28 is filled in the internal space surrounded by the pressed metal strip 11 and the back material 14. Then, cutter 29
Is cut into a predetermined size to form a metal siding material. According to this method, the step between the joint part and the decorative part of the metal face plate can be made as deep as 3 mm or more, and a metal siding material which is rich in three-dimensional appearance and excellent in design can be obtained.

[0004]

However, the contour of the decorative part may not clearly appear depending on the concavo-convex pattern on the decorative part. When the contour lines are blurred, the joints appear shallow, and the impression of the three-dimensional effect of the decorative part is likely to be weak. Blurred outlines can also cause trouble during painting. In other words, when the joint and the decorative part are painted in two colors with different colors in order to make the decorative part stand out, in the part where the outline of the decorative part does not clearly appear, the joint for the decorative part is extended beyond the outline to the joint. Paint tends to be applied, and it is difficult to obtain good two-color coating. The present invention has been devised to solve such a problem. By clarifying the contours of the joint portion and the decorative portion, a three-dimensional effect is ensured, and a good two-color coating is applied. An object is to provide a metal face plate for siding material.

[0005]

In order to achieve the object, the metal face plate for a siding material according to the present invention has a plurality of raised decorative portions separated by joints, and the decorative portions are formed with embossments. In this case, the step of the unevenness formed on the edge of each decorative portion adjacent to the joint portion is reduced, or the edge of each decorative portion is formed flat. The edge of the decorative portion formed with a small unevenness or formed flat is specifically set in a range of 1 to 5 mm from the joint portion to the inside of the decorative portion. In the case where irregularities are provided on the edge of the decorative portion, it is preferable that the step of the irregularities is 0.5 mm or less. This metal face plate has a joint flat portion and a decorative ridge with irregularities, and makes the uneven portion at the edge of each decorative ridge adjacent to the joint flat portion a small step or flattens the edge. A press provided with a formed template, and a joint elastic holding plate disposed opposite to a joint flat surface portion of the template and a soft elastic body having irregularities formed on the surface by inverting the irregularities of the decorative ridge of the template. It is manufactured by intermittently feeding a metal strip into a forming device, sandwiching the metal strip between a template, a joint holding plate, and a soft elastic body in a state where both ends in the width direction are pressed, and press forming. .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When a metal face plate 1 for a metal siding material is manufactured by the method introduced in Japanese Patent Application No. 10-5132, the decorative portion 6 is generally provided with irregularities of 2 mm or more as shown in FIG. . For this reason, a three-dimensional effect that cannot be obtained by roll embossing can be provided, but the boundary line 5 between the decorative portion 6 and the joint portion 4 tends to be unclear depending on the uneven pattern provided on the decorative portion 6. The blurred boundary line 5 becomes more conspicuous as the step a attached to the decorative portion 6 when the metal strip 10 is press-formed is larger. In other words, as shown in FIG. 5A, when a convex portion or a concave portion having a large step a faces the boundary line 5, when the convex portion or the concave portion is plastically deformed by press molding, the metal near the boundary line 5 is pulled. . As a result, the metal plate on the peripheral edge 2 of the decorative portion is elongated, and large distortion and residual stress are locally generated, so that a clear boundary line 5 cannot be obtained as shown in FIG. The local deformation, distortion, and residual stress of the metal on the peripheral edge 2 of the decorative portion are controlled by a template provided with a pattern such that the step a of the concave portion and the convex portion formed on the peripheral edge 2 of the decorative portion becomes a certain value or less. Is suppressed by using. That is, by performing press forming so that the amount of deformation of the metal does not locally increase at the peripheral edge 2 of the decorative portion, the amount of deformation of the metal at the portion facing the boundary line 5 is reduced, and local deformation, distortion, and residual stress are reduced. Is suppressed, and a clear boundary line 5 is obtained. Decorative part 6 excluding the peripheral part 2 of the decorative part
In (the interior 3 of the decorative portion), a concave portion and a convex portion are provided with a conventional step a. Alternatively, since the influence of the step a of the unevenness does not reach the boundary line 6, it is possible to provide a larger unevenness of the step a in order to emphasize the three-dimensional effect.

More specifically, as shown in FIG.
When the step a is restricted to a certain amount or less at a portion (peripheral edge 2 of the decorative portion) within a certain distance b from the boundary 5 toward the inside of the boundary line 5, the definition of the boundary 5 increases. Plate thickness 0.2-0.5
In a normal pressing condition in which the metal strip 10 of about mm is used, the step a of the interior 3 of the decorative part is about 0.5 to 2 mm, and the depth c of the joint is set to 2 mm or more, the constant distance b
Is preferably about 1 to 5 mm. Fixed distance b is 1
If it is less than mm, the influence of the step a in the interior 3 of the decorative part reaches the boundary line 5 and becomes unclear. Conversely, constant distance b exceeding 5 mm
In this case, the area of the interior 3 of the decorative portion becomes unnecessarily small, and the design property deteriorates. When the step a is restricted to 0.5 mm or less, a degree that does not adversely affect the sharpness of the boundary line 5.
The amount of deformation of the metal during the formation of the unevenness is reduced. By making the boundary line 5 clear, when a metal strip 10 is manufactured using the metal face plate 1, an impression given to a viewer of the metal face plate 1 becomes strong, and the design property is remarkably improved. Also in the two-color coating, the joint portion 4 and the decorative portion 6 can be clearly distinguished, so that it is easy to separately apply the joint portion paint and the decorative portion paint, and the decorative portion paint crosses the boundary line 5. The application to the joint portion 4 is prevented. As a result, it is possible to obtain a metal face plate in which the three-dimensional effect is emphasized by two-color coating without blurring of the boundary.

The joints 4 can be formed as both joints and vertical joints, or as either horizontal joints or vertical joints as shown in FIG. If the joints 31b of the template 31 are provided with fine irregularities 7, fine irregularities effective for improving the design property are formed at the bottom of the joints 4. Matting treatment may be performed by attaching acrylic beads, plastic beads, or the like to all or part of the surface of the metal face plate 1. Plates for metal face plates include plain steel plates, plated steel plates, painted steel plates, stainless steel plates and other steel plates, aluminum plates,
A copper plate or the like can also be used. The press-formed metal face plate 1
After filling the core material on the back side, the back material is bonded to produce a siding material. As the core material, foamed resins such as polyurethane foam, polyisocyanurate foam, polystyrene foam, phenol foam, and vinyl chloride foam are preferable. The back material is plain steel plate,
Stainless steel plates, painted steel plates, etc. are used. When a backing material provided with an opening is used, the opening can be covered with aluminum foil, kraft paper, or the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A coated steel plate having a thickness of 0.35 mm and a width of 594 mm is used as an original plate, and the equipment configuration is press-formed by an apparatus shown in FIG. To produce a metal face plate. For comparison, a metal face plate provided with a decorative portion 6 having the same step at the peripheral edge 2 of the decorative portion and the inside 3 of the decorative portion, and a metal face plate provided with a concavo-convex pattern by roll embossing were manufactured. After the two-color coating was applied to each metal face plate, the appearance of the metal face plate was observed, and the design properties regarding the three-dimensional appearance and aesthetic appearance were evaluated, and the quality of the two-color coating was judged.

[0010] As can be seen from the survey results in Table 1, the test numbers 1 to 6 with the concavo-convex pattern formed by press molding had a larger joint depth than the test numbers 7 and 8 with the concavo-convex pattern formed by roll embossing. And a decorative part, and had a three-dimensional surface shape. However, in Test No. 5 in which unevenness with a large step was provided near the contour, the contour did not appear clearly.
Since the decorative part paint was applied to the joints near the decorative part during the two-color coating, the three-dimensional appearance was slightly lacking. On the other hand, in Test Nos. 1 to 4 in which the steps of the concavities and convexities attached to the decorative part near the joint part were reduced, the decorative part and the joint part were clearly separated by the contour line despite the deep irregularity pattern. . Therefore, the decorative part paint could be easily applied only to the decorative part, and the decorative part could be made more prominent after the two-color coating. As a result, a metal face plate for a siding material was obtained in which the three-dimensional effect of the decorative portion was further emphasized and the design was significantly improved.

[0011]

[0012]

As described above, in the metal face plate for siding material of the present invention, the unevenness of the decorative portion is reduced near the joint or the edge of the decorative portion near the joint is flattened. Therefore, deformation, distortion, residual stress, and the like of the metal are suppressed at a portion corresponding to a boundary between the decorative portion and the joint portion. Therefore, the decorative part is separated from the joint part by a clear boundary line, and the metal face plate has a surface rich in three-dimensional appearance.
Also, when applying two-color coating using the joint paint and the decorative part paint, since the joint part and the decorative part are clearly distinguished,
The decorative paint does not need to be applied to the joints near the decorative portion, and the decorative portion can be made more prominent from the joints.

[Brief description of the drawings]

FIG. 1 is an example of a metal siding material manufacturing apparatus in which the present invention is implemented.

FIG. 2 is a perspective view (a) and a sectional view (b) of a template provided in a metal siding material manufacturing apparatus according to the present invention.
(C)

FIG. 3 is a perspective view (a) and a cross-sectional view (b) showing an example of a metal face plate embodying the present invention.

FIG. 4 is a perspective view (a) and a cross-sectional view (b) showing another example of a metal face plate embodying the present invention.

5A and 5B are a perspective view and a cross-sectional view illustrating an example of a metal face plate prepared by a conventional method.

FIG. 6 is a diagram illustrating a metal siding material according to the present invention.

[Explanation of symbols]

1: Metal face plate 2: Periphery of decorative part 3: Interior of decorative part 4: Joint part 5: Boundary line 6: Decorative part 10: Metal strip 11: Metal strip with deep moat pattern
13: Foamable resin 14: Back surface material 15: Fitting portion 16: Fitting receiving portion 21: Payoff reel 22: Pinch roll 2
3: Feeder 24: Roll forming device 25: Preheating furnace 26: Payoff reel 28: Heating furnace 29: Cutter 30: Press forming device 31: Mold plate 31a: Decoration ridge 31b: Joint flat surface 31c: For patterning Unevenness 32: Soft elastic body 33: Joint holding plate 34d: Lower plate holding 34u: Upper plate holding 40: Metal siding material 41: Back material 4
2: foamable resin 43: fitting part 44: fitting receiving part a: step b: range of the periphery of the decorative part where the step is restricted c: depth of joint

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Kazunari Nakamoto 1 Tsurumachi, Amagasaki-shi, Hyogo Nisshin Steel Corporation Technical Research Institute (72) Inventor Haruki Watanabe 1 Tsurucho, Amagasaki-shi, Hyogo Nisshin Steel Inside the Technical Research Institute, Inc. (72) Hideo Inventor's Office 1-13-1 Shinmachi, Nishi-ku, Osaka-shi, Osaka-shi Inside Shin Sogo Kenzai Co., Ltd. (72) Inventor Yugo Ota 7-2 Takatani Shinmachi, Ichikawa-shi, Chiba Sun F-term (reference) in New Sogo Construction Materials Co., Ltd.

Claims (3)

[Claims] The present invention has a plurality of raised decorative portions separated by joints, and the decorative portions are formed with irregularities by embossing, and a step of irregularities attached to an edge of each decorative portion adjacent to the joints. Or a metal face plate for a siding material in which the edge of each decorative portion is formed flat. 2. The method according to claim 1, wherein the step is from 1 to 5 from the joint to the inside of the decorative part.
The edge of the decorative part in the range of 0.2 mm is flat or the step is 0.
2. The metal face plate for a siding material according to claim 1, wherein the metal face plate has an unevenness of 5 mm or less. 3. A joint having a joint flat portion and an ornamental ridge with irregularities, wherein the irregularity at the edge of each ornamental ridge adjacent to the joint flat portion is reduced to a small step or the edge is flattened. A press provided with a formed template, and a joint elastic holding plate disposed opposite to a joint flat surface portion of the template and a soft elastic body having irregularities formed on the surface by inverting the irregularities of the decorative ridge of the template. The metal strip is intermittently fed into the forming device, and the metal strip is sandwiched between the template, the joint holding plate and the soft elastic body in a state where both ends in the width direction are pressed, and press-formed. A method for manufacturing a metal face plate for a siding material.