JPS5837469B2 - Yuuchiyakushikitosousekouhouhou - Google Patents

Description

[Detailed Description of the Invention] The object of the present invention is to apply a heat-melting thermoplastic resin paint to the inner and outer surfaces of buildings or the surfaces of members used in buildings by fusion. Regarding painting construction methods.

Conventionally, when painting the walls of buildings, the surfaces of plate-like building materials, etc., concrete surfaces, lightweight aerated concrete surfaces, or surfaces of these materials coated with mortar, i.e., the interior, exterior, or A component used in a building that has holes, trowel marks, etc. on its surface, so putty is applied partially or completely to the surface using a spatula to smooth it out before painting. There is a need.

When applying this putty, if you try to repair the damage or apply thick coating or filling to the recesses in one go, the putty will shrink as it dries, causing defects such as cracks in the putty, so the putty must be applied in several parts and repeatedly dried each time. The current situation is that they are being applied while doing so.

Since the putty agent mainly uses an aqueous emulsion system, it takes an extremely long time to dry during the rainy season and winter.

Therefore, the number of painting steps from applying putty to finishing with a top coat typically requires a long period of several days.

As for the top coating material, vinyl acetate resin emulsion paint, acrylic resin emulsion paint, or the like is generally applied two or three times to the walls and wall materials facing the interior of the building after applying the putty.

On the other hand, for outdoor wall surfaces and wall material surfaces, acrylic resin emulsion paints or solvent-based synthetic resin paints are often used, and the number of coatings is 2 to 3 times.

Painting at construction sites is especially difficult during cold and cold seasons, as drying of the paint is often inhibited.

For this reason, painting operations are often stopped.

In addition, when painting outdoor surfaces using solvent-based paints, the volatilization of the solvent during construction can harm the safety and health of painting workers, and there are many complaints and nuisances due to the odor of the emitted solvent gas, which can cause pollution. It is a predisposing factor.

This invention solves all the problems of the conventional painting process, such as the number of steps, defects in the shape of the paint film, and the predisposition to pollution, and at the same time improves the finished state of the painted surface obtained by painting. The aim is to achieve novel functions and effects in order to improve the design effects of the invention.

The gist of this invention is a heat-melting paint, the main components of which are ethylene copolymerized vinyl acetate resins, rosin derivatives, maleic acid-modified petroleum resins and their derivatives, rosin-modified petroleum resins, and polyethylene resins. 1 selected from thermoplastic resins such as polyester resins and polyester resins.
A solid or powder coating material consisting of one or more thermoplastic composites or resins is used to coat the interior or exterior of a building or the surface of a member used in a building. This is a fusion coating application method characterized by applying a coating material (coating material) while melting it by spraying, flowing down, or pressure bonding to quickly harden and finish with a thick film.

In this specification, petroleum resin refers to a resin derived from a fraction of C4 or C.

That is, the method of the present invention uses powdered or solid crushed heat-melted paint as a coating material to coat indoor and outdoor walls and floors of buildings, or when the material is metallic or non-metallic. The surface of a plate-shaped building material made of inorganic and organic materials,
That is, the above-mentioned hot-melt paint is melted on the inside or outside of a building or on the surface of a member used in a building, and is fused to the surface of the object to be coated once or twice by spraying, flowing down, pressure bonding, or other methods. Instantly cures thick film (e.g. 0.5~10
On the other hand, this hot-melt paint can be colored freely by mixing coloring pigments, and can also be mixed with various aggregates. It is also possible to bring a design effect to the painted surface.

Furthermore, due to the spraying method of fusion coating, the painted surface has an uneven shape.
It is possible to obtain a new and elegant paint finish that could not be obtained by conventional methods, such as wavy, tile, citron-like, and sand-like finishes.

In addition, as mentioned above, this paint is solvent-free, so there are no volatile substances during the spraying process, so there is no need to worry about worker health and safety, and it is odorless, so there are no concerns about pollution. None.

This is a fusion coating method that has many advantages, such as the ability to collect and reuse excess paint that is scattered.

Conventional methods using heat and melting were intended for construction such as adhesion, filling, and display of signs, but the construction method of the present invention, which is intended for painting finishes, uses different coating materials and has different effects. They are significantly different.

Next, an example of an experiment conducted based on the heat-sealing coating method of the present invention will be described.

First, the coating material was a petroleum resin-modified resin-based heat-fusion paint (the above-mentioned resin dihydride or drying oil titanium dioxide-20:5:7).
5) was heated to 180°C using a heat-melting cup type spray gun (a spray gun that heats and melts at the cup part), and the molten paint was allowed to flow down by gravity to the nozzle of an air spray gun attached to the bottom of the cup, resulting in a spray of 3.5 kg/c. The compressed air [I]'' is used to blow it out from the air nozzle inside the can.

At this time, the molten coating material was pulverized from a paint nozzle by air and sprayed forward.

The object to be painted used in this example was a model of a standing concrete wall, and the surface was spray-painted.The result was a hardened coating film with a maximum film thickness of 6 mm without any sagging marks, which is the first objective of this invention. I was able to get

It was also confirmed that a stable cured coating surface with no fluidity was obtained within about 10 seconds immediately after spraying.

The condition of the painted surface ranges from smooth to yuzu-like or sand-like, and the pressure of the compressed air is high (approximately 5 kg/cII1").
The distance between the gun and the object to be coated (the spraying distance is 50 to 60 cm), the distance between the gun and the object to be coated is 50 to 60 cm. Various coating surface conditions can be obtained by varying the surface pattern (10 to 15 cm) to obtain a smooth surface.

This is also the most important aim of the finishing method of the present invention.

Also, it is completely odorless during the painting process, and the spraying overloss is extremely small, and according to the experimental results, all of it falls to the floor when it is about 8φ or less. It is also easy to reuse the method without any special modifications.

In order to actually carry out Jimei's fusion coating method safely and efficiently, suitable coating equipment is required.

For example, when the object to be coated is a small object or a small area, the coating can be applied by dipping into a melting tank, or the above-mentioned hot melt cup type spray gun can be used.

In addition, in the case of a dog-shaped object or a large area, an airless spray device for hot melt, a curtain flow coater for hot melt, a heat roller, etc. can be used.

The above-mentioned airless spray, curtain flow coater, heat roller, etc. may be those that have been conventionally used for purposes other than general paint application.

Furthermore, since this invention uses thermoplastic resin as the main component of the vehicle, if uneven coating or film thickness differences occur, the above-mentioned defects can be corrected by heating those areas. It also has

As described above, according to the present invention, it is possible to significantly shorten the construction man-hours and construction period required for painting finishing work at construction sites and finishing P coating of pre-coated building materials such as prefabricated buildings, and it is also low-cost and cost-effective. The polluting effect is significant.

Although the application of the construction method according to the present invention has mainly been described with respect to buildings, it can equally be applied to bridges and other general structures, and can produce exactly the same effects.

Claims (1)

[Claims] 1 Heat-melting paints whose main vehicle is ethylene copolymerized vinyl acetate, rosin derivatives, maleic acid-modified petroleum resins and their derivatives, rosin-modified petroleum resins, polyethylene resins, polyester resins, etc. A solid or powder coating material consisting of one or more thermoplastic resins selected from plastic composites or resins is used on the interior or exterior of buildings or on buildings. A method for applying a fusion coating, characterized in that the paint is applied by spraying, flowing down, or pressing while melting the paint onto the surface of a member, thereby rapidly curing and applying a thick coating finish.