JPH0633991B2 - Toy fireworks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION * Industrial field of application The present invention relates to toy fireworks.

* Prior Art A toy fireworks in which a film of a water-based paint is formed on the surface of a coating portion provided on a shaft is described in Japanese Utility Model Publication No. 61-43120.

* Problems to be solved by the invention Although the above-mentioned conventional toy fireworks are excellent, it was found that the following problems still exist.

(A) Since the water-based paint is flame-retardant, when a film of the water-based paint is formed on the surface of the coating part, the burning speed of the coating part becomes slower than the original burning speed of the coating part. Therefore, when a film of the water-based paint is formed on the surface of the drug application part, the natural combustion of the drug application part is hindered, so that the way the sparks bloom is deteriorated and the fire may be extinguished halfway. In addition, since the film of water-based paint does not burn completely, not only burnt residue remains but also a large amount of smoke is emitted, which affects the flame color of explosives and metal powder (iron powder, titanium alloy, magnesium, aluminum, etc.) in explosives. The sparks caused by will not look beautiful.

(B) Since the applied part is covered with the film of the water-based paint, it does not easily ignite at the time of ignition.

(C) Air bubbles are easily mixed in the water-based paint during stirring of the water-based paint. When air bubbles are mixed in the water-based paint in this way,
Small holes are formed on the surface of the water-based paint film.

(D) As shown in FIG. 4, when the coating film 3 of the water-based paint is formed, the air-filled gap 4 is formed between the tip portion 2 ′ of the coating portion 2 and the tip portion 3 ′ of the coating film 3. The void 4 is formed by forming the coating portion 2 on the shaft portion 1 and drying it, and then dipping the coating portion 2 in the water-based paint with the toy fireworks held vertically with the coating portion 2 facing down. This is caused when the film 3 of the water-based paint is formed on the surface of the drug application part 2. That is, in this case, when the toy fireworks are pulled upward after the coating portion 2 is dipped in the water-based paint, only the surface portion of the water-based coating film 3 is dried first, and the inner portion is sloping downward and the tip is lowered. As a result of accumulating in the portion 3 ', an air-filled gap 4 is formed between the tip portion 3'and the tip portion 2'of the coating portion 2 which has already dried. When such a gap 4 exists between the tip 2'of the coating portion 2 and the tip 3'of the film 3, the tip 2'of the coating portion 2 detonates during ignition and the shaft portion At the line 5 (Fig. 4) in front of the tip 1'of the No. 1, the tip 2'separates with the tip 3'of the coating 3 from the coating portion 2 and the rest of the coating 3, and flies.
After all, the fire will go out.

(E) Water-based paints are expensive, which increases the cost of toy fireworks.

The present invention has been made to solve the above problems.

* Means for Solving the Problems In order to solve the above problems, the present invention provides a film or an aqueous paint and a mixture formed by mixing an aqueous paint and an oxidant over the entire surface of the coating part provided on the shaft part. Disclosed is a toy fireworks, which is characterized in that a film formed by mixing an agent and a combustible agent is formed.

* Example Reference numeral 11 is a shaft portion of a toy fireworks, and 12 is a coating portion provided on the shaft portion 11. On the entire surface of the coating portion 12, a film 13 formed by mixing an aqueous coating material and an oxidizing agent is formed. As the water-based paint, for example, a paint having the following composition is used.

Composition (A) (% by weight) Vinyl acetate resin emulsion 20 Coloring / extensive pigment 40 Thickening agent 2 Additive 8 Water 30 Composition (B) (% by weight) Vinyl acetate resin emulsion 20 Fluorescent / extensive pigment 50 increase Viscosity agent 2 Additive agent 3 Water 25 Further, for example, nitrates are used as the oxidizing agent. The ratio of the water-based paint and the oxidizing agent is, for example, 1: 1 (weight ratio).

The ignitability of water-based paints depends on the pigment used. Therefore, by adding a combustible agent such as sulfur to the water-based paint and the oxidizing agent and mixing them with the pigment in the water-based paint, the film 1
It is desirable to improve the ignitability of the film 13 by forming No. In this case, the ratio of the water-based paint, the oxidizing agent, and the combustible agent is, for example, 1: 1: 1 (weight ratio).

When the film 13 is formed on the surface of the coating part 12, the coating part 12 is formed by dipping, coating, spraying or the like a mixture of an aqueous coating material and an oxidizing agent or a mixture of an aqueous coating material, an oxidizing agent and a combustible agent.
Adhere to the surface of. The mixture of the water-based paint and the oxidizer or the mixture of the water-based paint, the oxidizer and the combustible agent, which are deposited on the surface of the drug application unit 12 in this manner, is dried after a certain period of time,
It hardens to form a tough, smooth coating 13.

In the case shown in FIG. 2, the ignition charge 14 is attached to the surface of the film 13 at the tip of the coating portion 12.

* Operation When using the toy fireworks of the present invention, the tip of the toy fireworks may be ignited. At this time, since the coating 13 is a mixture of the water-based paint and the oxidizing agent or a mixture of the water-based paint, the oxidizing agent and the combustible agent, the film 13 burns almost completely with the explosive of the coating section 12.

By mixing an oxidizing agent or an oxidizing agent and a combustible agent into the coating film of the water-based paint, the burning rate of the coating film can be adjusted to the burning rate of the coating portion. Further, by mixing an oxidizing agent or an oxidizing agent and a combustible agent into the film of the water-based paint, it is possible to increase the clay of the water-based paint at the time of manufacturing toy fireworks and shorten the drying time of the water-based paint. It is possible to prevent sagging of the water-based paint when the toy fireworks are pulled upward after the part is dipped in the water-based paint. As a result, there is no possibility that the above-mentioned void will be formed between the tip of the coating portion and the tip of the coating.

* Effect of the invention Since the toy fireworks of the present invention has a film formed by mixing the water-based paint and the oxidizer or a film formed by mixing the water-based paint, the oxidizer and the combustible agent on the entire surface of the drug application part. , It has the following effects.

(A) Since the film formed by mixing the water-based paint and the oxidizer burns almost completely, there is little smoke at the time of burning, no burnt residue remains, and the flame color of the explosive is kept in a good state. The sparks caused by the metal powder in the powder also look beautiful.

In particular, by mixing an oxidizing agent into the film of the water-based paint,
Since the burning rate of the film can be adjusted to the burning rate of the drug-coated part, the natural burning of the toy fireworks is ensured, and the way the sparks bloom is extremely good.

(B) Since the applied portion is covered with a film formed by mixing the water-based paint and the oxidizing agent, it easily ignites at the time of ignition.

The effects of (a) and (b) above are particularly remarkable in the case of a film formed by mixing (a, b) an aqueous paint, an oxidizing agent, and a combustible agent.

(C) Since bubbles are unlikely to be mixed when the water-based paint and the oxidizing agent or the water-based paint, the oxidizing agent and the combustible agent are mixed and stirred, there is little possibility that small holes may be formed on the surface of the film by the air bubbles.

(D) By mixing an oxidizing agent or an oxidizing agent and a combustible agent into the film of the water-based paint, it is possible to increase the clay of the water-based paint at the time of manufacturing toy fireworks and shorten the drying time of the water-based paint. As described above, the void 4 as shown in FIG. 4 does not occur. Therefore, the above-mentioned problem that the tip portion of the coating portion is detonated is solved.

(E) Since the oxidizing agent is inexpensive, it is possible to reduce the cost by mixing it with the water-based paint.

(F) The burning time of the film can be adjusted by adjusting the amount of the oxidizing agent added to the water-based paint.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing an example of toy fireworks according to the present invention, FIG. 2 is a side view showing a modified example of the same, and FIG. 3 is FIG. 1 III.
-III is an enlarged sectional view taken along line III, and FIG. 4 is an enlarged sectional view showing a conventional toy firework. 1: Shaft part, 1 ': Tip 2: Paint part, 2': Tip part 3: Water-based paint film, 3 ': Tip part 4: Void, 5: Line 11: Shaft part, 12: Paint part 13 : Coating, 14: ignition charge

Claims (2)

[Claims] 1. A toy fireworks characterized in that a coating film formed by mixing an aqueous paint and an oxidizer is formed on the entire surface of a coating portion provided on a shaft portion. 2. A toy fireworks characterized in that a coating film formed by mixing a water-based paint, an oxidizing agent, and a combustible agent is formed on the entire surface of the drug coating section provided on the shaft section.