JPS6163702A - Spinneret - Google Patents

Abstract

PURPOSE:To make fitting and exchange of spinning plate easy, by setting a dent channel for keeping a packing in a through hole bored in a main body of a corrosion-resistant metal. CONSTITUTION:The plural through holes 2 are bored at the bottom plate of the main body of spinneret 1' of a spinneret consisting of a corrosion-resistant metal, and the inner wall faces of the through holes are provided with the ring-shaped dent channels 9. The dent channels 9 are equipped with the packings 10 of fluorine-contained resin, and the packings support the outer peripheral faces of the glass spinning plates 12 having a great number of the spinning holes 11. Fitting and exchange of the spinning plates 12 are carried out simply by boring of the through holes 2, a spinneret can be manufactured easily, and the number of parts is few.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a spinneret equipped with a glass spinning plate for spinning rayon (polynosic).

(Prior Art) A conventional spinneret equipped with a glass spinning plate for spinning rayon (polynosic) had a structure as shown in FIG. That is, in a plurality of through holes 2 formed in the bottom plate of a mouthpiece body 1 made of ceramic and having a dish-shaped cross section, there are spun plates 5 made of glass each having a body 3 made of ceramic and having a large number of spinning holes 4 at the bottom. A fused cup-shaped spinning tube 6 was fitted and fixed to the upper surface of the bottom plate of the base body 1 by melting the glass 7.

(Problems to be Solved by the Invention) By the way, in such a spinneret 8, it is very difficult to drill through holes 2 in the spinneret body 1 made of ceramics, and when making the cup-shaped spinning tube 6, Since the glass body 3 and the glass spinning plate 5 are sintered at high temperatures, if the spinning plate 5 of one spinning tube 6 breaks or comes off, the spinneret 8 must be remade. Because it doesn't happen,
It takes a lot of time and effort.

(Object of the invention) The present invention has been made to solve such problems,
It is an object of the present invention to provide a spinneret in which a through hole can be easily formed in the spinneret body, a spinning plate can be easily attached and replaced, and the structure is simple and can be manufactured at low cost.

(Means for Solving the Problems) The spinneret of the present invention will be explained below with reference to the embodiment shown in FIG. 1, where 1' is a metal having corrosion resistance.

For example, the base body is made of Hastelloy and has a dish-shaped cross section, and a plurality of through holes 2 are bored in the bottom plate. A ring-shaped groove 9 is provided on the inner wall surface of each through-hole 2, and a puffkin 10 made of fluorine-based resin is attached to the ring-shaped groove 9. The outer peripheral surface of the spinning plate 12 is held, and the spinning plate 12 is stretched in each through hole 2.

(Function) The spinneret 8' having such a structure has a spinneret body 1' having a dish-shaped cross section.
Since it is made of a metal that has corrosion resistance, it is easy to form the through hole 2, unlike in the case of ceramics, and it can sufficiently withstand corrosion caused by the spinning dope, abrasion, and the like. Furthermore, since the glass spinning plate 12 stretched in the through hole 2 is held by the gasket 10 attached to the groove 9 provided on the inner wall surface of the through hole 2, its installation is extremely simple. , and if the spinning plate 12 breaks or comes off,
Since the spinneret can be removed from the through hole 2 and replaced, there is no need to recreate the spinneret as in the conventional case. Furthermore, since the spinning plate 12 is stretched over the through-hole 2, it is a cup-shaped spinning tube in which the body 3 is made of ceramics and the glass spinning plate 5 having the spinning holes 4 is fused to the bottom. 6 through hole 2
It is much easier to manufacture the spinneret 8' than in the case where the spinneret 8' is fitted into the glass 7 and fixed by melting the glass 7.

(Effects of the Invention) As can be seen from the above explanation, the spinneret of the present invention has a spinneret body made of a corrosion-resistant metal, so it is easy to make a through hole in the spinneret body, and the spinning plate can be directly connected to the through hole. Since the spinning plate is held and stretched by a gasket attached to a ring-shaped groove provided on the inner wall surface, the spinning plate is easy to attach and there is no need to manufacture a spinneret, and the spinning plate can be replaced easily. It has excellent effects such as being easy and easy to maintain, and also having a simple structure and a small number of parts, so it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the spinneret of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional spinneret. Applicant Tanaka Kikanku Kogyo Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A plurality of through holes are formed in the base body made of a corrosion-resistant metal, and a ring-shaped groove is provided on the inner wall surface of each through hole, and a fluorine-based resin packing attached to each groove is provided with a plurality of through holes. A spinneret comprising a glass spinning plate having a large number of spinning holes, the outer circumferential surface of which is held in place, and the spinning plate is stretched over each through-hole.