JPH01291931A - Coating material for building and the like - Google Patents

Abstract

PURPOSE:To manufacture a coating material having superior feature for flowing and sliding of snow, provided with a anticorrosion and soundproof functions and easy for using in the construction work by bonding firmly a thick polyurethane film layer all over at least one surface of a lead foil. CONSTITUTION:A film layer 2 of almost uniform thickness is bonded firmly all over one surface of belt-shaped lead foil 1 of uniform thickness selected between approximately 0.1-10mm. Said film layer 2 is composed of polyurethane resin constituted without being mixed with a solvent, and is as thick as in the range of approximately 0.1-20mm to be fixed for the purposes of use. As polyurethane resin to be applied without being mixed with a solvent, a two-pack type non-solvent polyurethane resin coating material composed of coating solution blended with a curing agent, a volume ratio of 3:1 is used. The composing components of the solution consist of polyol resin (55%), coloring pigment (33%), loading pigment (3%) and an additive (9%), and the curing agent is composed of modified isocyanate resin (100%).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a covering material to be laid on structures such as snow ditches, agricultural waterways, or tin roofs.

[Conventional technology]

Traditionally, snow ditches have been used in many areas with heavy snowfall, and are an effective method of snow removal in areas where roads are narrow (large snow removal machines or trucks cannot enter), such as in densely populated residential areas. By the way, in the conventional drifting snow groove,
In addition to cast-in-place concrete, there are factory-produced precast concrete open racks (U-shaped grooves), and even steel open racks.

In addition, as a conventional agricultural waterway, similar to a snow ditch,
In addition to cast-in-place concrete, there are factory-produced precast concrete open channels (U-shaped ditches), and even steel open structures.

Furthermore, a tin roof is made by laying corrugated iron on the top of the roof's sheathing board.

[Problem to be solved by the invention]

However, with regard to concrete snow drifting channels, snow easily adheres to the walls, and the coefficient of friction between the inner wall of the snow drifting channel and the snow mass is large, making it difficult for the thrown snow mass to flow down quickly. However, there was a problem in that large amounts of snow could not be efficiently processed in a short period of time.

In addition, regarding agricultural canals, wear and cracks are likely to occur in the blocks of the U-shaped groove, especially at the joints and joints, due to the water pressure of the water flowing in the canal and the vibrations of automobiles, etc., so it is difficult to use blocks. Similar abrasion and cracks may occur on the concrete surface even in U-shaped grooves that are not covered, and water leakage occurs frequently due to this abrasion and cracking. There was a problem in that it caused a decrease in rice production and had a significant negative impact on crops, such as poor tillering of rice.

On the other hand, whether it is a snow drift ditch or an agricultural waterway, those made of steel will rust even if the surface is painted, and the rust layer will build up in a very short period of time. As the rust spreads and the corrosion progresses very quickly, there is a problem with its service life, and there is also the disadvantage that the smoothness and abrasion resistance of the snow and water surfaces are rapidly reduced due to the unevenness of the rusted area. Ta.

Furthermore, tin roofs also have problems with their service life due to the occurrence and spread of rust, and also have the disadvantage that the sound of the rain hitting the tin roof is loud (reverberating) indoors when it rains.
Also, when it snows, it accumulates as roof snow, and when there is a large amount of snow on the roof, it is necessary to remove the snow from the roof.

Therefore, the present invention was devised to solve the above-mentioned problems all at once, and is a coating for structures etc. that has excellent drift and snow sliding ability, also has anti-corrosion and soundproof functions, and is easy to install. The purpose is to provide materials.

[Means to solve the problem]

The present invention is constructed by fixing a thick coating layer made of polyurethane resin over the entire area of at least one side of the lead foil.

[For production]

The coating material for structures etc. of the present invention has the following properties depending on the function of the coating layer:
It is extremely smooth, has a small coefficient of friction, is resistant to abrasion and impact, and has excellent water resistance.On the other hand, the lead foil has anticorrosion and soundproofing functions, and is integrated with the coating layer. Therefore, it has excellent flexibility and can be deformed, and can maintain its deformed shape.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the coating material for structures etc. which concerns on this invention is concretely described with reference to drawings.

In the figure, 1 indicates approximately 0.1m+n~10mm
The lead foil 1 is a strip-shaped lead foil having a uniform thickness appropriately selected between 1 and 2, and a coating layer 2 having a substantially uniform thickness is adhered to the entire area of one side of the lead foil 1. This coating layer 2 is made of polyurethane resin applied without mixing solvent,
The film thickness is thick, ranging from 0.1mm to 20m depending on the purpose of use.
It is set appropriately within a range of about m.

As the polyurethane resin applied without mixing the above-mentioned solvent, a two-component solvent-free polyurethane resin paint containing a volume ratio of paint liquid and curing agent of 3:1 was used, and the composition of the paint liquid was polyol. Resin (55%), Color pigment (33%)
), an extender pigment (3%), and an additive (9%), and the curing agent composition consists of a modified incyanate resin (100%), which is actually commercially available, such as the product name Miseron S-100. /A-1000 (manufactured by Mitsui Metal Paint Chemicals Co., Ltd.) was used.

Next, when coating the coating layer 2 on one side of the strip-shaped lead foil 1, the strip-shaped lead foil 1 is supported on a roller conveyor so that it can be conveyed along the longitudinal direction, and the roller conveyor The following processes are performed sequentially using the transportation system.

■ Surface treatment Remove oil and dust adhering to the upper surface of the strip-shaped lead foil 1 conveyed by the roller conveyor and clean it.

■ Undercoat Apply Miseron primer to the cleaned surface of the lead foil.

This is to strongly and tightly adhere the lead foil and the top coat (coat film thickness).

(2) After applying the topcoat and undercoat, spray Mizeron S-100/A-1000J, a product manufactured by Mitsui Kinzoku Paint Chemicals Co., Ltd., using a special coating machine while controlling the film thickness to a predetermined thickness.

Through such processing steps, a coating layer is applied to the lead foil, and after this coating layer is dried and hardened, it is rolled up with a roller to obtain a product as a covering material 3 for a structure or the like.

Next, we will explain the second part about the special paint machine that sprays the top coat paint.
This will be explained with reference to the figures.

Figure 2 shows the paint supply system, where 11 is a drum into which paint liquid P is placed, a hand heater 12 is attached to this drum 11, and 13 is into which curing liquid Q is placed. It's a drum. 14 indicates a metering pump 15.15 for pumping the paint liquid P contained in the drum 11.
16 is a pressure pump that feeds the hardening liquid Q stored in the drum 13 to the metering pump 17. 17, a filter 18.18 and a heater 19.19 are interposed. These heaters 19, 19 are for raising the temperature of the paint to 45°C to 50°C, which is the optimum temperature. This heating has the effect of lowering the viscosity of the paint, making it easier to atomize, and at the same time promoting reaction curing and preventing sagging of the paint film.

Paint liquid P quantitatively discharged from metering pump 15.15
The curing liquid Q discharged quantitatively from the metering pump 17 is sent to the mixer manifold 21 while being heated by separate pressure-resistant heating hoses 20, and is further transferred to the - painting hose 2.
2 to a static mixer 23, where the coating liquid P and hardening liquid Q are uniformly mixed, and then the mixed liquid is atomized and sprayed by a spray gun 24.

Reference numerals 25 and 25 indicate a circulation circuit, which heats the coating material to 306C to 408C through the circulation circuit when the original coating temperature is low and cannot be raised to the optimum temperature of the coating material. Further, 26 indicates a cleaning system consisting of a tank 27 containing solvent R and a cleaning pump 28, which is used to wash away the mixed paint from the mixer manifold 21.

Note that air is supplied to both the pressure pumps 14 and 16 and the cleaning pump 28 from a compressor 29.

If you spray a two-component solvent-free polyurethane resin paint (trade name: Miseron) onto one side of lead foil using the dedicated coating machine described above, you can paint the desired film thickness with just one spray. In addition, since it does not contain solvents, it dries and hardens quickly without sagging or pinholes, and the finished surface is smooth, and the coating film has excellent durability, abrasion resistance, water resistance, and water impermeability. It becomes possible to form layer 2.

However, the paint is not limited to a solvent-free polyurethane resin paint as long as it has the above-mentioned necessary characteristics.

When the covering material 3 obtained in this way is used for a snow drifting ditch, as shown in FIG. The covering material 3 is laid so that the coating layer 2 is on the surface, and the edge 3A of the covering material is bent along the upper edge of the open channel.
is fixed to the upper edge of the open channel using a connecting member 5 such as a concrete nail (or a bolt and nut, etc.), and the covering material 3, which is laid closely to the inner wall surface of the open channel 4, is immobilized. At this time, the covering material 3 is made of a laminated structure of a lead foil 1 and a polyurethane resin coating layer 2, and is highly flexible and deformable, and maintains its deformed state unless external force is applied. Therefore, it is possible to bend and easily install the cable along the inner wall surface of the open channel 4. Further, the joint between the covering material 3 and the covering material 3 is bonded and bonded by overlapping the end edges 3B of each covering material vertically with the covering material disposed on the upstream side in the snow drifting path facing upward.

When used in an agricultural waterway, the covering material 3 is laid in the waterway in the same manner as in the snow drifting groove described above.

When using this coating material for snow drifting ditches or agricultural canals, it is of course possible to lay it on existing open ditches, but in the case of factory-produced precast concrete open ditches, this covering material can be coated at the factory. You may lay down the material.

When using a coating material on a galvanized iron roof, as shown in Fig. 4, a lead foil 1 is placed closely on the top surface of the galvanized iron 7 laid on the top surface of the roof shedding board 6, so that the coating layer 2 becomes the surface. The covering material 3 is laid down in this manner, and the covering material 3 is made immovable by fixing the covering material 3 at appropriate locations with connecting members 5 such as nails. At this time, the joint between the covering materials is bonded and bonded by overlapping the edges of each covering material vertically with the covering material disposed on the breast side facing upward.

Incidentally, the covering material of the present invention may be laid directly on the sheathing board of the roof without intervening galvanized iron.

The thickness of the lead foil 1 and the thickness of the coating layer 2 can be adjusted appropriately depending on the application.

It goes without saying that the present covering material is not limited to the structures described above, ie, snow ditches, agricultural waterways, and roof members, but can also be widely applied to other structures. For example, it can be applied to waterways that require wear resistance for hydroelectric power generation, or waterways where sand flows out.

In addition, this coating material can also be used alone; for example, it can be bent and joined into a cylindrical shape with the coating layer on the inner surface to form a pipe and used as a pipe body for water conveyance, etc. Furthermore, a tank containing a liquid may be formed by framing with a reinforcing material and surrounding it with the coating material with the coating layer on the inside.

In the present embodiment, a coating layer was provided on one side of the lead foil in the present coating material, but a coating layer may be provided on both sides of the lead foil.

〔Effect of the invention〕

As explained above, the coating material for structures, etc. of the present invention has a laminated structure of a thick polyurethane resin coating layer and lead foil, and skillfully utilizes the characteristics of the coating layer and lead foil. , has the following effects in each field of use.

■ If used in a snow-flowing channel, the inner walls of the flow channel are smooth and have a small coefficient of friction, so large amounts of snow can be thrown down quickly without snow adhering to the walls. It is possible to dramatically increase the snow capacity and improve the efficiency of snow removal work.

■ When used in agricultural canals, the walls of the waterways are smooth, resistant to abrasion and impact, and have excellent water resistance, so there is no risk of water leakage caused by vibration or water pressure as in the past. This makes it possible to completely prevent water damage and ensure water management, which is essential for crop growth. In addition, if used in waterway facilities for hydroelectric power generation, for example, waterways that are subject to severe wear such as areas with high water surface pressure, they can withstand use for a much longer period of time than conventional ones made of concrete.

Similarly, it can also exhibit excellent durability when used in waterways where sand flows out.

■ When using drainage ditches, agricultural canals, and other waterways that require wear resistance, they can be easily constructed along the inner wall of the channel because they are highly flexible and can be deformed, and the deformed shape can be maintained reliably. It can be laid down and fixed in an immovable state, so construction work on existing structures or installation work in factory production processes can be easily performed.

■ When used on roofs, the smoothness of the roof surface and low coefficient of friction, coupled with the slope of the roof, means that even a small amount of snow that accumulates on the roof will automatically slide off, eliminating the need to remove snow.

■ When used on roofs, lead foil has a soundproofing function, preventing the sound of rain from echoing indoors even during heavy rainfall.

■ When used on steel snow-drifting ditches, steel agricultural canals and other waterways, or tin roofs, the lead foil is in contact with the metal surface, so the anti-corrosion function of lead is demonstrated, preventing the metal from rusting. It has the effect of preventing

■ The coating layer is strong against abrasion and impact, and is integrated with the lead foil, so this coating material itself has excellent durability, and it can be used to coat and protect structures that use it, and to protect against lead. Combined with the anti-corrosion effect of the foil, it has a remarkable effect on improving the durability of structures.

- Coupled with the fact that lead foil is cheap, this coating material can be obtained at a low cost, and it is easy to install, so it can be used in a wide range of applications at a low cost overall.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the coating material for a structure according to the present invention, FIG. 2 is an explanatory view showing a paint supply system in a dedicated coating machine used to form a coating layer, and FIGS. Fig. 4 shows an example of the use of the present invention, Fig. 3 is a perspective view showing the case where it is used for a snow drifting groove, and Fig. 4 is a partially cutaway perspective view showing the case where it is used for a tin roof. .

Claims (1)

[Claims] 1. A covering material for structures, etc., characterized by having a thick coating layer made of polyurethane resin adhered to the entire area of at least one side of lead foil.