JPS60141638A - Bushing plate for preparation of glass fiber - Google Patents

Abstract

PURPOSE:To prevent interference of molten glass stream introduced into each adjacent nozzle to each other by providing many nozzles to a material for bushing plate arranged protrusively to form a checkered pattern locating each adjacent nozzle at each corner of a square or rectangle. CONSTITUTION:A bushing plate 3' for prepg. glass fiber is provided by arranging many nozzles 2 protrudingly to a material 1 of a bushing plate to form a checkered pattern with each adjacent nozzle located at each corner of a square or rectangle. By this constitution, the streamline of molten glass to be introduced into each adjacent nozzle 2 is not interfered by the voltex of the molten glass stream to an adjacent nozzle but forms voltex flow swirling in the direction which is rather promotive for the swirling effect of the adjacent voltex to each other. Accordingly, the molten glass is introduced into many nozzles 2 with smooth swirling motion, there is no fear for causing cutting of glass fiber during extrusion and drawing, nor dispersion of denier of the glass fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called bushing plate having nozzle holes in a molten glass filling box or bushing used for producing glass fibers or continuous glass filaments. Regarding improvements. °□ In the conventional bushing plate, as shown in Fig. 1a and b, the nozzles 2 protruding from the bushing plate material 1 are arranged in a staggered manner, so that the adjacent nozzles 2 are arranged in a substantially equilateral triangle. It becomes.

By the way, the flow of molten glass entering the nozzles 2 of the bushing plate 3 is a swirling flow, and the swirls of adjacent nozzles 2 rotate in opposite directions as shown in FIG. Therefore, in a substantially equilateral triangular arrangement, the molten glass that enters the I and III nozzles 2 of the three adjacent nozzles 2 is interfered with by the vortices of the adjacent nozzles 2, and the direction of rotation is not determined, so the flow of the molten glass As a result, glass fibers, etc. that were spun by ejection were broken midway through the process, and their thickness varied, resulting in many products of poor quality.

The present invention has been made to solve this problem, and provides a bushing play for glass fiber manufacturing in which molten glass smoothly enters the nozzle holes of adjacent nozzles as a spiral flow without interference with each other. We aim to provide the following.

Bushing play for glass fiber production of the present invention 1.
As shown in Figures 3 and 4, a and b, respectively, a large number of nozzles 2 are arranged and protruded from the bushing plate material 1 in the shape of a base, and adjacent nozzles 2 are arranged in a square (or rectangular) arrangement. It is characterized by the fact that

In this way, bushing plays 1 and 3' of the present invention.

3'', the adjacent nozzles 2 of the large number of nozzles 2 are arranged in a square or rectangular arrangement, so the molten glass that enters each nozzle 2 flows into each adjacent nozzle 2 as shown in FIG. The swirling flows of molten glass that enter the molten glass do not interfere with each other, but instead become swirling flows that rotate in directions that help each other.Therefore, the molten glass flows into the many nozzles 2 while rotating smoothly, so that the molten glass There is no turbulence in the flow of the glass fibers, and the glass fibers etc. that are spun by ejection are not cut midway or have variations in thickness, making it possible to obtain good quality products.

Next, in order to clarify the effects of the bushing play for manufacturing glass fiber 1 of the present invention, specific examples and conventional examples will be described.

[Example 1] As shown in Figure 3 a and b, the thickness is 1.5u+ and the width is 50mm.

A bushing plate material 1 made of 20% PT-Rh with a length of 100+U has a base end inner diameter of 5.0ψ and a tip inner diameter of 2.
．． Nozzle 2 with 0φ dragon, wall thickness 0.3mm, height 5II11
The bushing plate 3' has 100 protruding nozzles arranged in the shape of a grid pattern, and two adjacent nozzles are arranged in a square arrangement at intervals of 4 squares. Ta.

[Example 2] As shown in Figure 4 a and b, the thickness was 1.5 mm and the width was 5 (Jlm
.

Bung play 1 to material 1 made of PL-1-h20% with a length of 100as, a proximal end inner diameter of 4.0 mm, a tip inner diameter of 1.8mm, and a wall thickness of 0.3111. height 5 dragon nozzle 2
A bushing plate 3 IT was obtained in which 100 of the nozzles 2 were arranged in a protruding manner in the shape of a base, and the adjacent nozzles 2 were arranged in a rectangular manner at intervals of 5 + u horizontally and 3 + n + i vertically.

[Conventional example]

Thickness 1.5 II 111 Width 50 as shown in Figure 1 a and b
+u.

A nozzle 2 with a base end inner diameter of 4.0+m, a tip inner diameter of 1.8φ■, a wall thickness of 0.3 mm, and a height of 5 mm is attached to a bushing plate material 1 made of 20% pi, -+n h, with a length of 100+u.
Bushing plate in which 2 adjacent nozzles are arranged protrudingly in a staggered manner and are arranged in an equilateral triangle at intervals of 5 -
I got 1.3.

However, when glass fibers were manufactured using the bushing plates of Examples 1 and 2 and the conventional example, the glass fibers made by the conventional bushing plates I and 3 were not cut in the middle or thickened. There were as many as 25% variations in the quality, but the glass fin made from the bushing plates 3' and 3'J of Example 1.2 had no such problems and was of good quality. there were.

As can be seen from the above description, the bunoshingfu of the present invention.

According to Leto, the molten glass flows smoothly into adjacent nozzles in a swirling direction without interfering with each other, but rather helping each other, so the flow of the molten glass can be disturbed. The excellent effect is that the fiberglass fibers that are spun by ejection are not cut in the middle or have variations in thickness, and can be of good quality. play.

[Brief explanation of the drawing]

Fig. 1a is a partial plan view showing a conventional bushing plate, the same figure is a vertical sectional view thereof, and Fig. 2 is a nozzle hole of the bushing plate. gMJ! Figures 3-3 and 4, which show the rotating direction of the swirling flow of glass, respectively show the bushing plate of the present invention, and a is a partial plan view;
b is a longitudinal cross-sectional view thereof, and FIG. 5 is a diagram without showing the rotating direction of the swirling flow of molten glass entering the nozzle hole of the bushing plate in FIG. 3. ■ Bushing play 1. Material, 2. Nozzle, 3.
Conventional bushing plate 1-13', 3" - Bushing plate of the present invention. Director: Tanaka Kikinzoku Kogyo Co., Ltd. Figure 3 (Q) Figure 3 (b) Figure 4 (Q) Figure 5

Claims (1)

[Claims] 1. A bushing plate for manufacturing glass fiber, characterized in that a large number of nozzles are arranged and protruded from a bushing plate material in the shape of a base, and adjacent nozzles are arranged in a square or rectangular arrangement.