DD159886A1 - SPINNDUESEN PACKAGE FOR SPANISHING FAEDES - Google Patents

Abstract

The invention relates to a Spinnduesenpaket for spinning of Faeden, in particular for melt spinning of synthetic high polymers. The aim and object of the invention is to provide a Spinnduesenpaket, which can easily and easily disassemble into the individual parts after use and is characterized by a high Spinnduesenstandzeit and high filter load capacity. The economy of the spinning process should be improved. According to the invention, this is achieved by using a spinneret package for spinning threads of synthetic high polymers, preferably melt of polyamides, polyesters or polyolefins, consisting of package top, middle part and bottom part, tensioning system, filter medium, seals and spinneret plate, in which the middle part of the package, the upper part of the package and the filter medium form an inner pressure space which is enclosed by an outer pressure space which consists of the upper package part, the lower package part, the clamping system, the holder and the filter medium and / or the Duesenplatte.

Description

Tit e l of the invention ;

Spinneret package for spinning threads

Field of application of the invention ;

The invention relates to a spinneret package for spinning threads, in particular for melt spinning synthetic high polymers, such as polyamides, polyesters and polyolefins using high spinning pressures in the nozzle package.

Due to the novel arrangement of the nozzle pack elements high throughputs in Spinndüsenpaket are possible.

Characteristic of the known technical solutions n;

It is well known that for sealing Spinndüsenpaketen appropriately shaped rings of aluminum or with this sealing material bordered filter or Homogenisiermedien used. This results in a positive connection between the nozzle pack inserts and the corresponding package parts ^ "Klare, H., Synthetic fibers made of polyamides, Akademieverlag 1953, Berlin, pp. 263 ff and p. 375 f_f_7 ·

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Furthermore, DD-PS 125 421 a device is known in which by using a special seal a self-sealing spinneret package is obtained. ":

The spinneret packets mentioned are particularly prone to failure, since with increasing running time, an increase in the filter resistance is recorded, which in turn has a significant increase in Gesaratdruckes spinneret package result. The duration of the spinneret pack is shortened by the rapid soiling of the filter cartridges.

It has also been proposed to reduce the number of sealing surfaces in the spinneret package. In the OA-PS 44-22527 was pointed out that one order each seal on Schmelzezufluß, between the upper and lower part and between the lower part and spinneret plate. Although the seal stability is increased by this measure, however, such devices are subject to the defect that so-called dead spaces for the melt arise. Furthermore, it comes to the formation of undesirable flow paths. Due to the misdirection of the melt, spinning disturbances occur.

In order to avoid the aforementioned disadvantages, it has also been proposed to separate the packet holder from three groups which can be separated from one another; composed of the upper, middle and lower part and performs the connection between the middle and upper part on the one hand and between the middle and lower part on the other hand by two separately associated clamping systems ^ VVP D 01 D / 225 88:27 To realize higher spinning pressures and to prevent inadmissible product paths, but best.ht the disadvantage is that the use of special seals is necessary.

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In this spinneret package, as well as in the aforementioned solutions, the filter surfaces are limited and thus the filter load can be increased only by a higher pressure «

Object of the invention :

The aim of the invention is to provide a spinneret package for the spinning of threads, which can be easily and easily disassembled into the individual parts after use and is characterized by a high .Spinndüsenstandzeit and high filter load capacity. The economics of the spinning process should be improved by avoiding failures of the spinneret package.

Explanation of the nature of the invention ;

The object of the invention is to provide a device in which one makes the arrangement of the items so that an increase in the filtration area and a higher pressure stability is achieved. Furthermore, it should enable the reduction of extremely high differential pressures at critical points of the spinneret package.

According to the invention the object is achieved in that one spinneret package for spinning threads of synthetic cooking polymers, preferably from the. Melt of polyamides, polyesters or polyolefins, consisting of package shell, middle part and lower part, Spannsystera, filter medium, seals and spinneret plate designed so that an inner pressure chamber is formed by the center packet part, the package shell and the filter medium, which enclosed by an outer pressure chamber is made of the package shell, the package base, the clamping system, the socket and

consists of the filter medium and / or the nozzle plate.

It is expedient if the filter medium of the inner pressure chamber has a cylindrical or conical shape and is optionally folded in this form. With such filters, the filter area can be significantly increased.

Furthermore, it makes sense if the number of sealing surfaces is limited. The socket is fixed to the package shell and positively connected.

The invention will be explained in more detail by an embodiment.

In the accompanying drawing shows

1: section through a spinneret package, Fig. 2? Section of the melt inlet to the inner pressure chamber.

FIG. 1 shows a complete spinneret package. It consists of a package middle part 3 and a package lower part 2, which is pressed firmly and positively against the package shell 1 by separately acting clamping systems 4 and 5.

The middle part 3 of the package forms with the filter medium 7 and the seal 6 an inner pressure chamber 12 which is held together by the clamping system 4.

The inner pressure chamber 12 is enclosed by the outer pressure chamber 13, which is formed by the upper package part 1, the lower package part 2, aer version 14, the filter medium 7 and the nozzle plate 8 and the clamping system 5.

The pressure loss at the nozzle plate 8 is constant, so that the "forming pressure of the outer pressure chamber 13 can also be set constant.

Since the outer pressure chamber 13 almost encloses the inner pressure chamber 12, the differential pressure is correspondingly reduced, so that the risk of leaks is considerably reduced. Due to the cylindrical shape of the filter medium 7, the filter area is increased, and thus the filter load can be increased in addition to the pressure.

In Figure 2, the melt inlet IO is shown in the inner pressure chamber 12. The melt feed 10 into the inner pressure space 12 is evenly distributed over the circumference, whereby residence time differences are avoided. ·

Claims (3)

JU Spinndüsenpaket for spinning threads of synthetic high polymers, preferably from the melt of polyamides, polyesters or polyolefins, consisting of package top, middle part and lower part, tensioning system, filter medium, seals and spinneret plate, characterized in that through the package middle part (3), the upper package part (1) and the filter medium (7) an inner pressure chamber (12) is formed, which is enclosed by an outer pressure chamber (13) consisting of the package upper part (1), the package lower part (2), the clamping system (4; 5), the socket (14) and the filter medium (7) and / or the nozzle plate (8). 2. Spinndüsenpaket according to item 1, characterized in that the filter medium (7) of the inner pressure chamber (12) is cylindrical or conical * 3 · spinneret package according to item 1 and 2, characterized in that the socket (14) with the package upper part (1) or the nozzle plate (8) is firmly and positively connected. For this 1 page drawings