JPH077154Y2 - Synthetic resin coated steel pipe - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a synthetic resin-coated steel pipe having a suede surface, which is used for props of desk lamps, handles of mops, interior furniture and the like.

[Conventional technology]

Conventionally, various types of steel pipes having a double coating of synthetic resin have been proposed.

For example, a steel pipe coated with a resin that adheres well to metal, and a resin that has good wear resistance and impact resistance coated on it,
By coating a metal tube with a hard resin and then coating a soft resin on the metal tube, there was a soft coated steel tube around the surface.

And, these have been suitably adopted for a handle of a mop, a pillar of an indoor shelf, a frame of furniture and the like.

[Problems to be solved by the device]

However, the synthetic resin-coated steel pipes used for the above-mentioned various purposes are also becoming more sophisticated and fashionable year by year from pragmatic products so far, and it is necessary to fit each product more closely. It became so. In response to such market demands, the surface appearance of conventional synthetic resin-coated steel pipes is inferior to that of the conventional steel pipes.

[Means for Solving the Problems]

In order to solve the above problems, the present invention has a thickness on the outer circumference of a steel pipe.
A synthetic resin base layer of 0.2 mm or more is adhered, and a dry coating film of urethane paint is formed on the outer periphery of the base layer with a thickness including beads of 20 to 50 μ and a part of the urethane beads protruding to the surface. It is formed by applying a suede-like synthetic resin-coated steel pipe.

[Action]

According to the configuration of the present invention, a synthetic resin base layer having a thickness of 0.2 mm or more is adhered to the outer circumference of the steel pipe, and 20 to 50 μm is applied to the outer circumference.
Since the dry coating film of urethane paint is formed with the thickness of some of the urethane beads that protrudes to the surface, the surface is soft, non-slip, matte, and when held in your hand. It fits comfortably on the skin and feels good.
Moreover, even if a shock is applied to the surface, the shock is absorbed by covering the underlayer with a thickness of 0.2 mm or more. In addition, even if the surface is impacted with scratches, the synthetic resin of the underlayer adheres to the steel pipe, so even the coating on the inner surface can be easily torn, causing problems such as rusting from the surface of the steel pipe. There is no such thing.

In addition, since the size of the urethane beads in the surface layer is 20 to 50μ, the surface does not become rough, it looks moist and matte, and there is no slippage and it is a suede tone with good texture. Is.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, 10 is a perspective view showing an embodiment of the synthetic resin-coated steel pipe of the present invention, 1 is a steel pipe, and the outer diameter is 8 to 8.
A 40 mm one with a wall thickness of 0.2 to 1.5 mm is usually used.

Reference numeral 2 is a synthetic resin base layer, on which polyvinyl chloride is adhered and coated via an adhesive. The thickness of the underlayer is 0.2 mm or more, and this thickness has the advantage that the strength of the coated surface and extrusion coating using a crosshead die can be stably performed. In addition, as a base layer, other modified polyethylene that has good adhesion to steel pipes, low-foaming polyvinyl chloride, soft polyvinyl chloride, acrylics, polyamides, and other resins that can adhere to steel pipes and have impact resistance The material is not particularly limited as long as it has a good compatibility with urethane.

3 is a dry coating film of urethane paint.

FIG. 2 is a partially enlarged sectional view of the synthetic resin-coated steel pipe of the present invention, in which urethane beads 4 are scattered in the dry coating film 3. The urethane beads 4 are excellent in adhesion, weather resistance, abrasion resistance, and abrasion resistance, and in particular, urethane beads having a particle size of 20 to 50 μ are dispersed in the urethane coating 6 so that a part of the beads is a surface. By forming a dry coating film 3 with a protruding thickness, the surface of the coating film does not become rough, but it becomes a moist and matte appearance, and it is possible to form a suede-like surface that does not slip and feels good on the skin. Moreover, since the urethane beads 4 firmly adhere to the urethane resin in the paint 6, they do not easily come off even if they protrude to the surface and can be used for a long time.
Even if it separates, there is no difference in hue from the urethane paint 6, so it does not spoil the appearance.

The concrete thickness of the dry paint film 3 of urethane paint is 20-60μ
If the thickness is in this range, a part of the urethane beads 4 can be projected on the surface to make the surface uneven.

In FIG. 2, reference numeral 5 denotes an adhesive layer, which serves to bring the steel pipe 1 and the synthetic resin base layer 2 into close contact with each other.

In the suede-like synthetic resin-coated steel pipe of the present invention, the surface layer is suede-like, and by changing the synthetic resin layer of the underlayer 2 variously, coated steel pipes of various textures can be obtained.

For example, a steel pipe having an inner diameter of 23.5 mm and a wall thickness of 0.5 mm is extrusion-coated with a soft foamed polyvinyl chloride of about 0.5 to 1.0 mm through an adhesive,
A 20- to 50-micron urethane bead-containing two-component urethane paint is applied on top of this to form a wet coating, which is preheated for 5 minutes and then heated in a heating furnace at 80 ° C for 35 minutes to remove the solvent and diluent by evaporation. Was done. After cooling, a dry coating film with a suede surface was obtained. This coated steel pipe has a smooth surface, has no slippage, and has a soft touch, and is a steel pipe particularly suitable for children's bed shelves and handrails.

As described above, the present invention adheres a synthetic resin of 0.2 mm or more onto the surface of a steel pipe, and forms a dry coating film of urethane paint containing urethane beads on it, according to various applications. The synthetic resin of the underlayer can be variously changed and combined according to the application, and an extremely excellent synthetic resin-coated steel pipe can be obtained.

[Effect of device]

As described above, since the synthetic resin-coated steel pipe of the present invention has a portion of urethane beads of 20 to 50 μ protruding on the surface of the dry coating of urethane paint, it is a coated steel pipe with a suede-like moist feel and good touch. When used as a handle for various tools or as a pole of a desk lamp, it has the excellent effect of giving a high-class feeling, soft feeling, and good touch without buffing. Since the beads are firmly adhered and integrated with the urethane resin of the dry coating film, the urethane beads do not fall off even if used for a long time, and even if they drop off, there is no difference in hue from the dry coating film and the aesthetics are impaired. It has an excellent effect of not having it.

Further, in order to produce the suede-like coating layer on the surface more remarkably, there is an advantage that the coated steel pipe having a better texture can be obtained by changing the synthetic resin of the underlayer variously according to the use.

[Brief description of drawings]

FIG. 1 is a perspective view of a synthetic resin-coated steel pipe showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of an essential part showing an embodiment of the present invention. 1 ... Steel pipe, 2 ... Synthetic resin base layer, 3 ... Dry coating film, 4 ... Urethane beads.

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin underlayer having a thickness of 0.2 mm or more is adhered to the outer periphery of a steel pipe, and the outer periphery of the underlayer contains urethane beads of 20 to 50 μm, and a part of the beads protrudes to the surface. Suede-like synthetic resin-coated steel pipe with a urethane paint dry coating formed on it.