JPH01252555A - Production unit for metal-coated glass fiber - Google Patents

Abstract

PURPOSE:To provide the title unit so designed that a glass fiber drawn through a nozzle of a glass melting furnace is passed through the slit of a melting furnace for coating metal and a gas burner is provided for local heating in coating the glass fiber with a molten metal, thereby improving adhesivity of said molten metal to the glass fiber. CONSTITUTION:A gas burner 5 is provided in front of the metal feeding slit of a melting furnace 2 for coating metal (e.g., aluminum). A glass fiber 3 drawn through the nozzle of a glass melting furnace 1 is heated with said gas burner 5 and pressed on the slit with a gas pressure along with also heating the slit with said gas burner 5. And the glass fiber 3 is coated with a molten metal percolating through the slit of the furnace 2, thus obtaining the objective metal- coated glass fiber. Provision of said gas burner 5 enables the molten metal to be easily bonded to the glass fiber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to an apparatus for producing aluminum-coated glass fiber.

(Prior Art) FIG. 3 is a schematic diagram showing an apparatus for producing, for example, metal-coated glass fiber, and in the figure, (1) is a glass melting furnace;
(2 is an aluminum melting furnace for attaching aluminum to the glass fiber (J) manufactured from (1). (
The winder is a winder that winds the manufactured aluminum-coated glass fibers. Note that FIG. 4 shows an enlarged view of the slit portion of the aluminum melting furnace. (The yen is the vertical slit through which the glass fibers pass, and the gl is the vertical slit through which the glass fibers pass.
) is a horizontal slit through which molten aluminum oozes.

Next, the operation will be explained. The glass fiber (J) is drawn out from the nozzle of the glass melting furnace (1) and comes out from the slit (9) of the aluminum melting furnace.

It touches the molten aluminum, attaches the aluminum to its surface, and winds it up with the winder (4).

[Problem to be solved by the invention]

Conventional metal-coated glass fiber manufacturing equipment is configured as described above, so that when the glass fiber passes through the slit section of the aluminum melting furnace, the molten aluminum around the slit section is rapidly cooled, and the aluminum adheres to the glass fiber. However, as shown in the cross section of FIG. 5, aluminum was attached only to half the circumference of the glass fiber. In addition, there were problems such as the glass fibers a (■ being slits) being drawn at high speed (σ) did not pass through the slits (marked) stably, making it difficult for molten aluminum to stably adhere to the glass fibers.Incomplete adhesion state When this fiber was used as a radio wave absorber (chaff), the electrical properties sometimes deteriorated due to the properties of glass.

This invention was made in order to solve the above-mentioned problems, and the object is to obtain a glass fiber manufacturing device that can stably attach aluminum to glass fibers and also attach it all around the circumference. .

[Means to solve the problem]

The apparatus for manufacturing metal-coated glass fiber according to the present invention prevents aluminum from being cooled by spraying high-temperature gas onto the slit portion of an aluminum melting furnace, and the spray presses the glass fiber against the slit portion using pressure, thereby producing a good result. It is designed to provide adhesion.

[Effect]

In this invention, the high-temperature gas heats the slit part of the aluminum melting furnace, which is cooled by passing the glass fiber, and prevents the fluidity of aluminum from decreasing due to temperature drop. By pressing it against the slit, the glass fiber is stabilized within the slit (uniformity) and the adhesion of aluminum to the glass fiber is dispersed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a glass melting furnace, (2) is an aluminum melting furnace, (3) is a glass melting furnace),! It furnace (1)
(4) is a winder that winds up the glass fiber, and (5) is an aluminum melting furnace (a gas burner installed in front of the slit for supplying aluminum).

Glass fibers (3) drawn out from the nozzle of the glass melting furnace (1) are heated by a gas burner (5), and further pressed against the slit portion of the aluminum melting furnace (2) by gas pressure. On the other hand, the aluminum melting furnace (the slit part of 2 is also a gas burner (
51, the fluidity of the A/a nium is increasing. As a result, glass fiber (3)
Aluminum adheres well to. The aluminum-coated glass fiber thus obtained is wound up by a winder (4).

According to the present invention, aluminum is almost stably adhered to the entire circumference of the glass fiber as shown in FIG.

In addition, in the above embodiment, a gas burner (5) was provided for local heating, but other heating devices,
Electric heater with blower 1 may be an oil burner,
The same effects as in the above embodiment are achieved.

〔Effect of the invention〕

As described above, according to the present invention, since the gas burner is installed for local heating, the adhesion of aluminum to glass fibers is improved, and a product of good quality can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an aluminum-coated glass fiber manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a glass chaff manufactured according to the present invention, and FIG. 3 is a schematic diagram of a conventional aluminum-coated glass fiber manufacturing apparatus. , FIG. 4 is a schematic diagram of a slit portion of an aluminum melting furnace, and FIG. 5 is a sectional view of a conventional glass chaff. In the figure, (1) is a glass melting furnace, (2 is an aluminum melting furnace, (3 is a drawn glass fiber, (→ is a winder, (■ is a gas burner, (6) is an aluminum coating W, (7) is It is a glass core. Note that the same numbers in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa, Patent Attorney: Figure 3, Figure 2, Figure 4, 99 shows 1,120,000 slits.

Claims (1)

[Claims] (1) In an apparatus for manufacturing metal-coated glass fibers, the glass fibers drawn out from the nozzle of a glass melting furnace are coated with molten metal that oozes out through a slit portion of the melting furnace for coating metal, in which the glass fibers are 1. An apparatus for producing metal-coated glass fiber, comprising a device for blowing high-temperature gas onto the slit portion in a direction in which the gas is pressed against the slit portion.