JPH07107323B2 - Floor coating agent application method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor coating agent coating method in which a floor coating agent is applied to a floor surface and is dried by a drying air.

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 3-101869, a traveling machine body is provided with a coating device for coating a floor coating agent on a floor surface and a supply device for supplying dry air to the coating coating agent. Therefore, we have proposed a coating machine that can easily and efficiently coat the coating agent simply by moving the machine on the floor.

[0003]

Conventionally, even when the above coating machine is used, if the machine is moved at high speed in order to shorten the working time, the coating surface after passing through the coating machine becomes sticky due to poor drying of the coating agent. Was left. As a result, after the coating work by the coating machine is completed, it is necessary to take time for the coating agent to dry naturally, or when the coating machine is of a type that the worker walks following It was necessary to slow down the machine moving speed so as not to generate stains due to stickiness on the surface, and work efficiency was not sufficiently improved in comparison with the use of a coating machine. An object of the present invention is to provide a coating method capable of easily and efficiently performing a coating operation and obtaining a coated surface of good quality.

[0004]

In the method for applying a floor coating agent according to the present invention, in order to achieve the object, the floor coating agent is applied to the floor surface by an application device as the machine moves and the applied floor coating agent is applied. Using a coating machine configured to dry with a drying air supplied by a drying air supply device, a minimum film forming temperature lowering agent is added to a floor coating agent base material having a minimum film forming temperature of 45 ° C or less. An acrylic floor coating agent having a film temperature of 5 ° C. or lower is applied. The action and effect are as follows.

[0005]

[Function] Since an acrylic floor coating agent having a minimum film-forming temperature of 5 ° C. or less is used, which is formed by adding a minimum film-forming temperature lowering agent to a coating agent base material having a minimum film-forming temperature of 45 ° C. or less, It is possible to perform the coating operation while moving the machine body as fast as possible and forming a coated surface having a good finish even if the conditions required for the coating operation can be satisfied.
That is, it is demanded that the coating work can be performed not only in a place or time when the ambient temperature is relatively high such as in summer, but also in a place or time when the ambient temperature is low such as in winter. It is necessary to be able to apply no coating agent. Therefore, if a coating agent having a minimum film forming temperature of 5 ° C. or lower is used, the film can be easily formed even if the ambient temperature is low. Therefore, the coating work can be performed even in the low ambient temperature such as in winter. You can meet the demand that you can work without being limited to. Even if the floor coating agent has the same minimum film-forming temperature, a coating agent composed of a coating agent base material having a high minimum film-forming temperature requires a larger amount of the minimum coating agent than a coating agent composed of a coating agent base material having a low minimum film-forming temperature. A film forming temperature lowering agent is added. A coating agent containing a large amount of the minimum film-forming temperature lowering agent contains a large amount of non-volatile components and tends to have poor fluidity and dryness. Therefore, when a coating agent composed of a coating material base material having a minimum film forming temperature of higher than 45 ° C. is used, it is difficult for the coating agent to smoothly flow from the tank of the coating machine to the supply nozzle, and it is difficult to uniformly coat the floor surface. . That is, the work of compensating for coating leakage and coating deficiency after coating is required, and the value of using the coating machine is lost. Moreover, even if dry air is supplied to force the drying process, the stickiness tends to remain when the processing time is short,
In order to dry thoroughly so that no stickiness remains,
It is necessary to slow down the moving speed of the coating machine. On the other hand, when a coating agent composed of a coating agent base material having a minimum film-forming temperature of 45 ° C. or less is used, the minimum film-forming temperature lowering agent contained is relatively small and the fluidity and the drying property are good. Flows smoothly from the tank to the supply nozzle, and it is supplied so that coating unevenness is less likely to occur on the floor surface.
The conditions on the coated surface for using the coating machine can be satisfied. Moreover, even if the moving speed of the coating machine is increased and the drying treatment time by the drying air is relatively short, it is possible to dry well and the stickiness is less likely to remain, so that the coating machine can be moved at a relatively high speed for efficient coating. It becomes possible to work. Moreover, since the acrylic coating agent is used, the coating surface is cheaper than the polyurethane type and has good peelability and transparency, and the color change after coating is unlikely to occur. Can be formed.

[0006]

EFFECTS OF THE INVENTION While using a coating machine so that the coating operation can be performed easily, the use of the acrylic coating agent, which is the coating agent base material, makes it possible to move the machine relatively quickly and perform the coating operation efficiently. It was Moreover, it is well-dried and stain-resistant, has good transparency and is also resistant to color change, is clean, has good peelability, and can be easily repaired or re-coated later so that it can be finished in excellent condition. Became.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, one caster-type idle front wheel 1 is provided, and a pair of left and right rear wheels 2, 2 are drivable by an electric motor M1 for traveling, and steering is provided. At the front part of the traveling machine body 4 provided with the handle 3, a supply device 5 for supplying a coating agent to the floor surface by a supply nozzle 5a, a coating device 6 for coating the floor surface with a coating tool 6a, and a coating agent tank 7 are attached. In addition, a dry air supply device 8 for supplying dry air to the floor surface by a blower fan 8a is additionally provided at a position located behind the coating device 6 of the traveling machine body 4. A cover 9 for covering the dry air supply device 8, the coating agent tank 7, the traveling motor M1 and the like.
Is attached to the upper part of the traveling machine body 4, so that as the machine body travels, various floor surfaces made of stone, wood, concrete and chemical flooring materials are coated with a floor coating agent so that a walking type self-propelled floor The coating agent coating machine E is configured.

That is, the supply device 5 comprises one of the supply nozzle 5a, an electric liquid feed pump 5b, a nozzle transfer endless belt 5c, an electric nozzle transfer motor M2, etc., and the electric liquid feed pump 5b is used for running the machine body. It is configured to be driven in association with this, to take out the coating agent solution from the coating agent tank 7 via the liquid supply hose 10 and supply it to the supply nozzle 5a. The supply nozzle 5a is configured to drop the coating agent from the liquid supply hose 10 onto the floor surface by the supply pressure of the electric liquid supply pump 5b, and is attached to the nozzle transfer endless belt 5c. The nozzle transfer motor M2 is automatically driven to rotate in the forward and reverse directions as the machine travels, and the nozzle transfer endless belt 5c is switched between the forward rotation direction and the reverse rotation direction via the belt support shaft 11. The supply nozzle 5a is configured to reciprocate in the lateral direction of the machine body. That is, the supply nozzle 5a drops the coating agent solution from the liquid supply pump 5b on the floor surface, and moves zigzag above the floor surface for the purpose of advancing the machine body and reciprocating transfer by the nozzle transfer motor M2, thereby As the process progresses, the coating agent is supplied to the floor surface with the width determined by the nozzle movement stroke as the supply processing width. The applicator 6 comprises the applicator 6a, an applicator drive mechanism 6b and an electric application motor M3, and the applicator drive mechanism 6b is driven by the application motor M3 as the machine body travels to apply the applicator 6a to the floor surface. Since the applicator 6a is configured to vibrate vertically so as to act, and the applicator 6a is positioned behind the supply nozzle 5a, the coating agent from the supply device 5 is applied by the applicator 6a as the machine travels. Apply coating to the floor. The dry air supply device 8 includes the blower fan 8a, the wind tunnel body 8b, and the electric blower motor M4. The blower fan 8a is rotatably driven by the blower motor M4 as the machine runs, and is formed on the top of the machine body cover 9. The outside air of the cover is sucked into the inside of the wind tunnel 8b through the intake port 12 provided therein, and the wind is applied by the shield 14 that covers the front side and the left and right sides of the body below the blower port 13 formed by the lower end side of the wind tunnel 8b. Since it is configured to discharge downward from the blower opening 13 while preventing it from leaking to the side, and because the blower opening 13 is located on the rear side of the applicator 6a, as the machine runs, The room temperature air is supplied as the coating agent drying air to the floor surface after the coating treatment by the coating tool 6a.

When performing the coating operation using the coating machine E, the minimum film forming temperature (hereinafter referred to as MFT) is 45.
Floor coating agent below ℃ minimum film-forming temperature lowering agent (hereinafter,
It is abbreviated as MFT lowering agent. ) Is added, and a thermoplastic floor coating agent in which the MFT of the entire coating agent is 5 ° C. or less due to the addition of the MFT reducing agent is adopted as the coating agent to be used. As is clear from the coating test results of FIG. 3 and Table 1, the coated surface after passing through the coating machine E is coated relatively efficiently while preventing stains or damage due to the operator's stepping on it. I can work and it is preferable.

That is, in FIG. 3, the horizontal axis represents the weight ratio of the non-volatile components contained in the floor coating agent, and the vertical axis represents the running speed (m / min) of the coating machine. This coating test was conducted under the test conditions of room temperature of 25 ° C., humidity of 38%, floor surface temperature of 21 ° C., and coating amount of 5 g per square meter. 3A to 3B and Table 1 show an acrylic floor coating agent obtained by adding diethylene glycol monoethyl ether or tributoxyethyl phosphate as an MFT reducing agent to an acrylic copolymer emulsion as a floor coating agent base material. The test results are shown.

[0011]

[Table 1]

Then, a, b, and c are added to the floor coating agent base material having an MFT of 45 ° C., 30 ° C. or 17 ° C. so that the MFT of the entire floor coating agent is 5 ° C. or less.
A floor coating agent obtained by adding a reducing agent in a weight ratio shown in Table 2 below. In addition, for D, E and H, the MFT reducing agent is added to the floor coating agent base material having an MFT of 50 ° C., 70 ° C. or 80 ° C. so that the MFT of the floor coating agent as a whole is 5 ° C. or less. It is a floor coating agent added in the weight ratio shown in 2.

[0013]

[Table 2]

In other words, the coating agent D, the coating agent D In case of,
The traveling speed of the coating machine must be about 10 m / min or less.
On the other hand, in the case of the coating agents A, B and C, the traveling speed of the coating machine can be increased to about 10 m / min or higher. It is possible to increase up to about 15 m / min. In consideration of cost and other factors when performing the work, the traveling speed of about 10 m / min is the minimum required traveling speed. The acrylic floor coating agent obtained by adding the MFT reducing agent so that the MFT as 5 ° C. is 5 ° C. or lower is used.

[Other Example] As in the above example, diethylene glycol monoethyl ether or tributoxyethyl phosphate is used as an MFT lowering agent, and dibutyl phthalate, diethylene glycol monomethyl ether, texanol, N-methyl-2- The present invention can also be applied to the case where various MFT-lowering agents such as pyrrolidone are employed.

As the applicator of the applicator, in addition to the vibrating applicator, the rotary applicator, the brush applicator, etc., which are different in operation type and applicator form, can be used in practice. The invention is applicable. Even when using a non-self-propelled coating machine where the machine is moved by the operator's hand,
The present invention can be applied.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Vertical side view of the entire coating machine

FIG. 2 is a plan view of a dry air supply device.

FIG. 3 is an explanatory diagram showing the results of a coating test.

[Explanation of symbols]

 6 Coating Device 8 Dry Air Supply Device E Coating Machine

Claims (1)

[Claims] 1. A coating device configured such that a floor coating agent is applied to a floor surface by a coating device (6) as the machine body moves and the coating floor coating agent is dried by dry air supplied by a dry air supply device (8). A machine (E) is used to add an acrylic floor coating agent having a minimum film forming temperature of 5 ° C or less, which is obtained by adding a minimum film forming temperature lowering agent to a floor coating agent base material having a minimum film forming temperature of 45 ° C or less. How to apply the floor coating agent.