JPH05138813A - Flocked steel material and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a steel material that has a good appearance as a steel material for civil engineering and construction, as well as a de-steeled feeling, and that is sufficiently compatible with the surrounding environment. [Structure] After removing the rust from the steel material, apply an adhesive to a film thickness of 10 μm or more, and use a non-metal fiber flocking material with a length of 0.5 mm or more in the uncured state of the adhesive layer by electrostatic flocking or air blowing. A flocked steel material and a method for producing the same, characterized in that the flocked steel material is adhered to the adhesive layer almost vertically by the method or a combination of both methods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel material having a good appearance as a steel material for civil engineering / construction and requiring a desteeling feeling, and a method for producing the steel material.

[0002]

2. Description of the Related Art Steel materials used as steel materials for civil engineering and construction include H-section steel, steel pipes, steel pipe sheet piles, steel sheet piles, steel plates, etc.
Some of them are buried in the soil, some are on the water,
Some are on the ground and are exposed to the public. In the latter case, depending on the place of use, it is necessary to maintain aesthetics,
For example, in many cases, color coating is applied as disclosed in JP-A-63-183838. Further, recently, as disclosed in Japanese Patent Laid-Open No. 03-51125, a multicolor pattern is applied to try to adapt to the surrounding environment.

[0003]

However, the method of applying a colored coating gives a cold impression that it is a steel material, and for example, in the steel material used as columns, structures, etc. in buildings, tourist resorts, underground malls, leisure facilities, etc. , Need more de-steeling feeling.

The present invention provides a steel material which is more suitable as a steel material for civil engineering / construction such as buildings, sightseeing spots, underground malls, leisure facilities, etc., because it has a better feeling of desteeling than colored coated steel materials. ..

[0005]

That is, according to the present invention, a steel material is coated with an adhesive, and non-metallic fibers such as nylon fibers, acrylic fibers, and carbon fibers having a length of 0.5 mm or more are almost perpendicular to the adhesive layer. Flocked steel material, which is characterized by being adhered to, and steel material after removing rust by shot blasting, grit blasting, sand blasting, grinder, belt sander, etc., then spraying and brushing the adhesive to a film thickness of 10 μm or more, A non-metal fiber such as nylon fiber, acrylic fiber or carbon fiber having a length of 0.5 mm or more is applied by an electrostatic flocking method or an air spraying method or both while the adhesive layer is uncured. The method for producing a flocked steel material is characterized in that the flocked steel material is adhered almost vertically to the adhesive layer by using together.

The flocked steel material and the manufacturing method thereof according to the present invention will be specifically described below.

FIG. 1 is an example of a sectional view of a flocked steel material obtained by the present invention. In the figure, 1 is a steel material, 2 is an adhesive layer, and 3 is a flocking agent. Shot blasting steel material 1,
After removing the rust with grit blast, sand blast, grinder, belt sander, etc., the adhesive layer 2 has a film thickness of 10
It is formed by spraying, brush coating, spatula coating, or the like to a thickness of at least μm. After that, the adhesive layer 2 is uncured and has a length of 0.5 mm.
The above-mentioned non-metallic fiber flocking material 3 such as nylon fiber, acrylic fiber, or carbon fiber is attached to the adhesive layer 2 almost vertically. The adhesive layer 2 is not particularly limited as long as it exists in a liquid state after being applied. However, it is preferable that the color of the flocked material 3 matches the color of the flocked material 3, and generally the same color or a similar color is preferable. Even if a urethane-based or epoxy-based anticorrosive paint is used to provide anticorrosion, the adhesive layer 2
Shows sufficient adhesiveness. Flocked material 3 has a length of 0.5 mm
There is no particular limitation as long as it is the above non-metallic fiber. In general, it is desirable to use the one that is colored to suit the surrounding environment. As a flocking method of the flocking material 3, an electrostatic flocking method or an air blowing method, or a combination of both types is used in order to adhere the flocking material 3 almost vertically to the adhesive layer 2. When using the electrostatic flocking method, the appropriate conditions may differ slightly depending on the type of flocking material and the type of flocking machine, but the potential difference between the electrodes or the potential difference between the electrostatic flocking machine and the steel material =
5 to 100 kv Distance between electrodes or distance between electrostatic flocking machine and steel material = 20
˜700 mm Potential gradient = 0.1 to 2.0 kv / mm. Also, in the case of the air spraying method, the proper conditions are slightly different depending on the type of the flocking material and the nozzle shape, but within the condition that the air pressure = 0.5 to 4.0 kgf / cm ² the distance from the nozzle to the steel material = 100 to 700 mm. It should be carried out. In addition, the electrostatic flocking method has a drawback in that it is possible to flock evenly in a flat part, but cannot be flocked uniformly in a bent part or a narrow part of a steel material having a complicated shape. The air blowing method is inferior to the electrostatic flocking method in the flat part in the uniformity of the flocking, but the uniformity is not affected so much even in the bent part and the narrow part, so that both may be used together depending on the shape of the steel material. When the electrostatic flocking method is used, it is desirable that the flocking material 3 be subjected to electrodeposition treatment so that the flocking material 3 is easily charged.

Further, these manufacturing methods are excellent in on-site workability, and when hair removal of the flocking material 3 or damage of the adhesive agent 2 occurs due to impact, abrasion, etc., it is carried out at the construction site by almost the same method. It can be repaired.

[0009]

EXAMPLES The present invention will be described in detail below with reference to examples, but the scope of the present invention is not limited to these examples.

Steel plate (500 mm x 150 mm x 9 mm)
After rust removal with grit blast, spray paint a gray urethane adhesive to a film thickness of 30 μm, and with the urethane adhesive uncured, a 4 mm length of gray nylon fiber is electrostatically implanted. I planted hair. For electrostatic flocking, a commercially available hand-type flocking machine is used, and the potential difference between the electrodes or the potential difference between the electrostatic flocking machine and the steel material =
60 kv Distance between electrodes or distance between electrostatic flocking machine and steel material = 10
Hair was transplanted under the condition of 0 mm potential gradient = 0.60 kv / mm 2. After that, since the flocking density was slightly reduced at the edges of the steel sheet, particularly at the corners, flocking was performed by an air blowing method under the condition of air pressure = 1.5 kgf / cm ² distance from nozzle to steel material = 300 mm ² . By the above, a gray-colored flocked steel sheet having a good sense of desteeling was obtained.

Steel plate (600 mm × 9 mm × 10 m)
Is rusted with grit blast, masked to a length of 3 m, spray-painted with a green acrylic urethane adhesive, and the acrylic urethane adhesive is uncured to 2 m
Electrostatic flocking method with m length and green color acrylic fiber, electric potential difference between electrodes or electric potential difference between electrostatic flocking machine and steel material =
48kv Distance between electrodes or distance between electrostatic flocking machine and steel material = 10
Hair was transplanted under the condition of 0 mm potential gradient = 0.48 kv / mm 2. As described above, a green-colored partially-implanted steel pipe having a good sense of desteeling was obtained.

Further, a steel pipe sheet pile (400 mm × 9 mm × 9 m)
(LT nail) is removed by blasting with sandblast, masked to a length of 2 m, spray-painted with a blue acrylic urethane adhesive, and the acrylic urethane adhesive is uncured and has a length of 2 mm and is blue. Acrylic fibers were blown by an air blowing method under the condition of air pressure = 1.5 kgf / cm ² distance from nozzle to steel material = 300 mm ² . From the above, a blue-colored flocked steel pipe sheet pile having a good sense of de-steeling material was obtained.

[0013]

As an effect of the present invention, it is possible to obtain a steel material which is more suited to the surrounding environment as a steel material for civil engineering / construction such as buildings, sightseeing spots, underground malls, leisure facilities, etc. Was given.

[Brief description of drawings]

FIG. 1 is a sectional view of a flocked steel material of the present invention.

[Explanation of symbols]

 1 ... Steel material 2 ... Adhesive layer 3 ... Flocking material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B32B 15/16 7148-4F

Claims (2)

[Claims] 1. A steel material coated with an adhesive and having a length of 0.5 mm.
A flocked steel material, characterized in that the above-mentioned non-metal fibers are adhered on the adhesive layer almost vertically. 2. After removing the rust from the steel material, the adhesive is applied to a film thickness of 10 μm.
When the adhesive layer is uncured, it has a length of 0.
A method for producing a flocked steel material, characterized in that a non-metallic fiber of 5 mm or more is attached to the adhesive layer almost vertically by an electrostatic flocking method, an air blowing method, or a combination of both.