JP3078029B2 - Spray device for multicolor pattern and coating method of multicolor pattern using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray apparatus for a multicolor pattern and a method for coating a multicolor pattern using the spray apparatus. More specifically, the present invention relates to a spray device for a multicolor pattern which can be suitably used when applying a multicolor pattern to a house interior material, an exterior material, a bathroom base material, and the like, and a method for coating a multicolor pattern using the spray device.

[0002]

2. Description of the Related Art Conventionally, the color tone of FRP molded articles used for housing materials, bathroom base materials and the like has generally been a single color, but in recent years, there has been an increasing demand for molded articles having multicolored patterns. .

In order to meet the above-mentioned demands, molded articles with multicolored patterns include FRP laminates using patterned or printed fiber cloths or nonwoven fabrics, transparent resins and aluminum flakes or expensive natural stones. An FRP structure having a layer in which pulverized products are mixed has been developed.

[0004] However, the above-mentioned FRP laminate requires not only complicated work steps at the time of manufacture, but also long working time, resulting in poor working efficiency, and the pattern or the like attached to the FRP laminate is flat. However, those using a fiber cloth had a drawback that the cloth eyes were visible.

[0005] Further, the FRP structure requires natural stone, which not only increases the cost, but also requires a large film thickness in order to completely cover the natural stone. However, there is a disadvantage that sink marks and cracks are generated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to develop a method for forming a multicolored pattern which is simple in view of the prior art and which does not cause sink marks or cracks during molding. As a result of repeated research, they finally found a method that satisfies all of these requirements at the same time, and completed the present invention.

[0007]

SUMMARY OF THE INVENTION The present invention relates to
For multicolor patterns using paints with a viscosity of 10 to 30P
A spray device , wherein a hardener pouring nozzle is disposed in front of a paint outlet , and paint ejected from the paint outlet is provided.
And the curing agent discharged from the curing agent discharging nozzle are in contact with each other.
Paint and cure further ahead of the
An air nozzle is provided so that the agent and air can contact each other.
A spray gun for a multicolor pattern provided so that the paint outlet, the curing agent discharge nozzle and the air nozzle are opened by triggering, and two or more paint supply tanks .
And a spray gun for the multicolor pattern and a paint supply tank.
Phrases and multicolored pattern spray device, wherein a is connected through the paint receiving manifold, and with said spray device, respectively a viscosity at 25 ° C. 10
The present invention relates to a method for coating a multicolor pattern, wherein two or more paints of up to 30 P are ejected from a paint outlet, and simultaneously, a hardener and an atomizing air are ejected from a hardener injection nozzle and an air nozzle.

[0008]

In the spray apparatus for a multicolor pattern according to the present invention, as described above, the hardener injection nozzle is disposed in front of the paint outlet, and the paint outlet, the hardener injection nozzle and the air nozzle are triggered. , And a spray gun provided to be opened by pulling the paint and two or more paint supply tanks are connected via a paint receiving manifold.

According to the spray device of the present invention, the colors of the respective paints themselves are almost completely mixed with each other even when the plurality of paints carried from the plurality of paint supply tanks come into contact with each other.
Mixed inside the manifold to maintain
Is fed later the spray gun, put out injection from the paint outlet <br/> is, mixes with injection out simultaneously with curing agent, atomizing air from the air nozzle in a state in which a plurality of paint do not mix completely Sprayed.

Therefore, according to the coating method of the present invention, 2
The paint is completely mixed and does not change to another color, and is applied in a state where the color of the paint itself is substantially maintained.

In the present invention, a gel coat is used as a paint. The viscosity of the gel coat at 25 ° C. is usually 10
It is adjusted to be ~ 30P. When the viscosity is less than 10P, a plurality of paints are mixed with each other to prevent multicoloring. When the viscosity is more than 30P, not only does the ejection property deteriorate, but also the mixing with the curing agent deteriorates. And the curability tends to decrease.

The degree of variability of the paint is preferably 6.5 or less from the viewpoint of multicolor pattern formation and surface leveling property, and is preferably 3.5 or more in consideration of sagging after spraying.

The atomizing air pressure is appropriately adjusted according to the size of the target paint particles. Such atomizing air pressure is
If it is set too low, mixing of the gel coat and the curing agent will be poor, and if it is set too high, it will be impossible to achieve multicoloring. Therefore, it is usually preferable that the amount is 0.1 to 1.5 kg / cm ² .

In forming a multicolor pattern, for example, in order to obtain a spray of large paint particles, the atomizing air pressure is
For example, the viscosity is set as low as about 0.2 to 0.5 kg / cm ² and the viscosity of the gel coat is set as high as about 20 to 30P. Also, in consideration of the large paint particles, and in order to prevent dripping, the degree of fluctuation is set as high as about 5.0 to 6.5.

The color of the paint used in the present invention is not particularly limited, and is usually adjusted to a desired color by mixing a pigment or the like.

As the curing agent, any one which is generally used as a gel coating curing agent can be used without particular limitation.

The mixing ratio between the curing agent and the paint is usually adjusted so as to be 0.7: 100 to 2.0: 100 by weight. If the mixing ratio of the curing agent is too small, curing will be insufficient and lifting will occur, and if it is too large, physical properties such as water resistance will decrease.

The multicolor pattern spray device of the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic perspective view showing an example of a multicolor pattern spray gun used in the multicolor pattern spray apparatus of the present invention.

In FIG. 2, 1 is a spray gun for a multicolor pattern, 2 is a gun head, 3 is a trigger, 4 is a hardener inlet, 5
Is a paint inlet, 6 is a side port control section , 7 is a control section , 8 is an air inlet, 9 is an air nozzle, 10
Is a curing agent injection nozzle, and 11 is a paint outlet.

The paint is fed from the paint tank to the paint inlet 5 of the multicolor pattern spray gun 1, but it is necessary to prevent two or more paints from mixing. Therefore, in order to introduce two or more kinds of paints in the paint hose up to the paint inlet 5 in a state as close as possible to laminar flow without mixing completely, the viscosity of the paint and the pressure for feeding the paint are appropriately adjusted. Is preferred.

The paint fed into the paint inlet 5 is the trigger 3
Is drawn into the interior of the multicolor pattern spray gun 1 and is ejected from the paint outlet 11. The spray state is the atomization that is sent from the air inlet 8 and ejected from the air nozzle 9. It is appropriately adjusted by the amount of air, the side port 6 and the control 7. FIG. 3 is a longitudinal sectional view of the spray gun centering on the control 7 part.

The curing agent is injected from the curing agent injection port 4,
It is ejected from the curing agent ejection nozzle 10. At this time, the ejection amount of the curing agent is adjusted by, for example, adjusting the internal pressure of the paint supply tank so that the mixing ratio with the paint is within the above range. The internal pressure of the paint supply tank is usually 0.5 to 3 kg
/ Cm ² .

The air nozzle 9 is opened at the same time that the paint outlet 11 is opened by pulling the trigger 3.

The paint ejected from the paint outlet 11 contacts the hardener and air and is atomized. The state at this time will be described with reference to FIG.

FIG. 4 is a schematic explanatory view of the gun head of the multicolor pattern spray gun. In FIG. 4, L is a paint outlet 11
, M is the center line of the curing agent discharge nozzle 10, and N is the trajectory of the air ejected from the air nozzle 9. A point A is an intersection of the center line L and the center line M, and a point B is an intersection of the center line L and the locus N.

The paint is ejected from the paint outlet 11 along the center line L, contacts the hardener discharged from the hardener discharge nozzle 10 at a point A, and contacts the air at a point B. Atomized.

The point A is desirably long to some extent so that the hardener injected from the hardener injection nozzle 10 covers the area around the paint ejected from the paint outlet 11 with the hardener. The distance between the outlet 11 and the point A is preferably at least 4 mm. Further, in order to sufficiently mix the paint and the curing agent, the distance between the point A and the point B is preferably 3 mm or more. If the distance between the paint outlet 11 and the point B is too small, there is a possibility that the atomizing air may hit before the paint and the curing agent ejected from the paint outlet 11 are mixed. If it is too large, it will not be possible to set the paint to properly hit the atomizing air, usually 7-12
It is preferably mm.

FIG. 5 is a schematic explanatory view of a hardener feeding section inside the spray gun viewed from the lower part of the spray gun.

In FIG. 5, the hardening agent fed into the hardening agent feeding section 12 moves the transmission rod 13 and the needle 14 at the same time when the trigger 3 is pulled, and the needle 14 and the head 15 move.
A gap is formed between them, and the mixture is fed into the curing agent injection nozzle 10 through the gap.

Next, an example of the multicolor pattern spray apparatus of the present invention will be described. FIG. 1 is a schematic explanatory view of the device.

In FIG. 1, a spray gun 1 for a multicolor pattern
Is connected to a paint receiving manifold 17 via a paint hose 16. Each paint supply tank 18a, 18b, 18
c and 18d are check valves 19a, 19b and 19c, respectively.
And 19d are connected to the paint receiving manifold 17. In FIG. 1, four paint supply tanks are provided, but the number of paint supply tanks may be increased as needed. The number of such paint supply tanks depends on the desired number of colors, but is usually about 2 to 4 pieces. The air inlet 8 of the spray gun is connected to an air manifold 24 by an air hose 20 via an atomizing air pressure gauge 23. Also, the hardener injection nozzle 10
Is connected to a hardener tank 22 via a hardener hose 21.

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to only these examples.

Example 1 The spray device shown in FIG. 1 was used. In FIG. 4, the distance between the paint outlet 11 and the point A was set to 4 mm, and the distance between the points A and B was set to 3 mm.

Gel coat white liquid in which 100 parts (parts by weight, hereinafter the same) of an unsaturated polyester resin, 2.3 parts of a thixotropic agent, 18 parts of pigment paste white, 0.5 part of cobalt naphthenate and 10 parts of styrene monomer are dispersed in a paint supply tank 18a. (Viscosity 17P, whisker 5.5, gelation time 15 minutes), and the tank pressure was set to 1.4 kg / cm ² .

Gel coating black liquid (viscosity: 22P, thixotropic degree) in which 100 parts of unsaturated polyester resin, 2.3 parts of thixotropic agent, 10 parts of pigment paste black, 0.5 part of cobalt naphthenate and 5 parts of styrene monomer are dispersed in the paint supply tank 18b. 5.0,
The gel pressure was set to 0.8 kg / cm ² .

Gel coat brown liquid (viscosity 27P, thixotropic degree 4.3, gelling time) in which 100 parts of unsaturated polyester resin, 2.2 parts of thixotropic agent, 5 parts of pigment paste tea and 0.5 part of cobalt naphthenate are dispersed in the paint supply tank 18c. 15 minutes), and the tank pressure was set to 0.6 kg / cm ² .

Gel coat clear liquid (viscosity 17 P, thixotropic degree 5.5, gel time 15) in which 100 parts of an unsaturated polyester resin, 2.2 parts of a thixotropic agent, 10 parts of styrene monomer and 0.5 part of cobalt naphthenate are dispersed in a paint supply tank 18d. Min) and the tank pressure was set to 1.5 kg / cm ² .

Spray gun for multicolor pattern (nozzle diameter 2.8
In 1), the atomizing air pressure was set to 0.5 kg / cm ² at a ratio of the ejection amount of the curing agent to 1 part of the coating material to 100 parts of the coating material, and sprayed toward the mold.

Next, after curing, an unsaturated polyester resin was impregnated into a glass mat, laminated and cured to obtain a multicolored FRP molded product.

The resulting molded article has a pale gray marble-like multicolored pattern in which irregular white, black, and brown are mixed delicately at a ratio of about 3: 2: 1. I was

Example 2 The same spray apparatus shown in FIG. 1 as used in Example 1 was used.

Paint supply tanks 18a, 18b, 18c and 18
d), the gel coat used in Example 1 was placed therein, and the tank pressure of each of the paint supply tanks 18a, 18b and 18c was adjusted to 1.0 kg / cm ^2.
Set to For the paint supply tank 18d,
The check valve was closed and the air was released.

Spray gun for multicolor pattern (nozzle diameter 2.8
The spray pressure was set to 0.8 kg / cm ² at a ratio of 1 part of the curing agent sprayed to 100 parts of the coating material per 100 parts of the paint and sprayed toward the mold.

After that, an FRP molded product was obtained in the same manner as in Example 1.

The obtained molded product is as shown in FIG.
In addition, small particles of white, black, and brown were mixed at about 4: 3: 2, and in some places, the whole including the slightly larger eye particles had a brownish granite-like multicolor pattern.

Example 3 The same spray apparatus shown in FIG. 1 as used in Example 1 was used.

The gel coats used in Example 1 were put into the paint supply tanks 18a, 18b and 18c in the same manner as in Example 1, and 100 parts of the unsaturated polyester resin, 2.3 parts of the thixotropic agent and the pigment paste were placed in the paint supply tank 18d. Beige (3 parts yellow pigment, 0.5 part red pigment, 100 parts black titanium, 100 parts titanium)
A gel coat beige solution (viscosity 17 P, thixotropic degree 5.5, gel time 15) in which 15 parts of a mixture of 1.0 part) and 0.5 part of cobalt naphthenate and 10 parts of styrene monomer are dispersed.
Minutes) and spray gun for multicolor pattern (nozzle diameter 2.8
mm) 1 was set at a ratio of 1 part of the curing agent to 100 parts of the paint, and then only the check valve of the paint supply tank 18b (gel coat black) was opened and the check valves of the other supply tanks were closed. Then, the tank pressure to 1.0 kg / cm ² of the paint supply tank 18b, by setting the atomization air pressure 0.3 kg / cm ^2, was sparsely spray on mold.

Then, the check valve of the paint supply tank 18b is closed, the valves of the other tanks are opened, and the tank pressure is set to 1.0 kg / cm ² and the atomizing air pressure is set to 0.8 kg / cm ² , and the molding is performed again. Sprayed into mold.

After that, an FRP molded product was obtained in the same manner as in Example 1.

The obtained molded product has sparse black large particles and small white, beige and brown particles of about 2:
The overall color mixed at 2: 1 had a beige granite multicolor pattern.

Example 4 The same spray apparatus shown in FIG. 1 as used in Example 1 was used.

When only one kind of gel coat is used, the paint supply tank 18a is used. When two kinds of gel coats are used, the paint supply tanks 18a and 18b, 3
When using different types of gel coat, paint supply tank 18
a, 18b and 18c, and paint supply tanks 18a, 18b, 18c and 18d when four types of gel coats are used.
It was used.

Next, the paint tank pressure was changed as shown in Table 1 and the flow rate of the gel coat spouted from the paint outlet was examined. Table 1 shows the results.

In the table, gel coats 1 to 4 have the following compositions.

(Gel coat 1: gel coat clear) A mixture of 100 parts of unsaturated polyester resin, 2.2 parts of thixotropic agent, 10 parts of styrene monomer and 5 parts of cobalt naphthenate (Gel coat 2: gel coat white) unsaturated polyester resin 100 parts, thixotropic agent 2.3 parts, pigment paste white
18 parts, cobalt naphthenate 0.5 parts, styrene monomer 10
Parts (Gelcoat 3: Gelcoat Brown) 100 parts of unsaturated polyester resin, 2.2 thixotropic agent
Parts, 5 parts of pigment paste tea and 0.5 part of cobalt naphthenate (gel coat 4: gel coat black) 100 parts of unsaturated polyester resin, 2.3 parts of thixotropic agent, 10 parts of pigment paste black, 0.5 part of cobalt naphthenate Mixed with 5 parts of styrene monomer

[0057]

[Table 1]

From the results shown in Table 1, it can be seen that the flow rate of the gel coat ejected from the paint outlet is proportional to the paint tank pressure.

When two or more paint supply tanks are used, the flow rate of the gel coat is substantially equal to the product of the flow rate when only one paint supply tank is used and the number of paint supply tanks. I understand.

[0060]

By using the multicolor pattern spray apparatus of the present invention, a pattern in which various colors exist sparsely can be easily formed at a time, so that a pattern similar to natural stone can be formed with high productivity. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an example of a multicolor pattern spray device of the present invention.

FIG. 2 is a schematic perspective view of a multicolor pattern spray gun used in the present invention.

FIG. 3 is a schematic vertical sectional view of a multicolor pattern spray gun used in the present invention.

FIG. 4 is a schematic explanatory diagram of a gun head of a multicolor pattern spray gun used in the present invention.

FIG. 5 is a schematic explanatory view of a curing agent feeding section viewed from the bottom of the spray gun for a multicolor pattern shown in FIG. 2;

FIG. 6 Theory showing an example of the multicolor pattern obtained by the present invention
Clear map

[Explanation of symbols]

 1 Multicolor pattern spray gun 3 Trigger 9 Air nozzle 10 Hardener pouring nozzle 11 Paint outlet 17 Paint receiver manifold 18a Paint supply tank 18b Paint supply tank 18c Paint supply tank 18d Paint supply tank

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yasuhiko Mio 138-1 Kokubunji Temple, Okunino-cho, Himeji-shi, Hyogo Prefecture Within Okunikoshi Co., Ltd. (56) References JP-A-64-85159 (JP, A) JP-A-2 -194871 (JP, A) JP-B 63-36301 (JP, B2) JP-B 36-1460 (JP, Y1) JP-B 62-9968 (JP, Y2) JP-B 59-1712 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B05B 7/08 B05B 7/26 B05D 1/02 B05D 5/06

Claims (2)

(57) [Claims] 1. The composition has a viscosity of 10 to 30 P at 25 ° C.
A spray device for a multicolor pattern using a paint, wherein a hardener discharge nozzle is disposed in front of a paint outlet,
Paint ejected from paint outlet and the hardener injection nozzle
Before the point of contact with the hardener dispensed from
The paint and curing agent may come into contact with air
A spray gun for a multicolor pattern provided such that the paint nozzle, the hardener discharge nozzle and the air nozzle are opened by triggering; And a supply tank for the multicolor pattern.
A spray device for a multicolor pattern, wherein a playgun and a paint supply tank are connected via a paint receiving manifold. 2. Use of the spray device according to claim 1,
A multicolored pattern characterized in that two or more paints each having a viscosity of 10 to 30 P at 25 ° C. are ejected from a paint outlet, and simultaneously, a curing agent is ejected from a curing agent injection nozzle and atomized air is ejected from an air nozzle. Painting method.