SU866009A2 - Nozzle set for forming chemical fibre - Google Patents

Description

The invention relates to the field of production of chemical fibers and relates to a spinneret kit for forming chemical fibers.

According to the "main author. St. No. 735669, there is known a spinneret kit for forming chemical fibers, containing a filter bag and spinnerets arranged in a housing having a central channel for supplying precipitating liquid in communication with additional channels and a polymer solution reservoir coaxially located relative to the central channel and connected by helical channels with a pipe for supplying a polymer solution located coaxially with the central channel [I].

However, the known spunbond kit ^ does not allow to improve the quality of the fibers, since it does not allow to supply fresh precipitating liquid into the inside of the conical bundle of the formed fibers.

The purpose of the invention is improving the quality of the fibers.

The goal is achieved in that it has a hollow perforated nozzle, reinforcements? & 1st lower end in the central channel for the supply of precipitating fluid and made tapering to the free gro end.

The drawing shows a General view of spunbond kit, in section.

The chemical fiber forming kit contains a filter bag 1, dies 2 located in a housing 3 having a central channel 4 for supplying a precipitating liquid, communicating with additional channels 5, and a polymer solution reservoir 6 coaxially located relative to the central channel 4, connected by helical channels 7 with a nozzle 8 for supplying a polymer solution located coaxially to the central channel 4, and a hollow perforated nozzle 9, reinforced with a lower end to the central Channel 4 for supplying coagulation liquid and adapted tapered to its free end. Perforated grids 10 are installed on the outer surface of the housing.

The device operates as follows.

The polymer solution through the pipe 8 and screw-shaped channels 7 is fed into the tank 6 for the polymer solution. After passing through the filter page of keta 1, the polymer solution is forced through the spinnerets 2. The precipitating liquid through additional channels 5 enters the central channel 4 and is sent to the perforated nozzle 9 .. The precipitating liquid flowing from the perforated nozzle is directed both to the trickles of polymer flowing from the spinnerets, and goes inside the fiber bundle, which eliminates the stagnant area inside the fiber bundle. To regulate the supply of precipitating fluid to the additional channels 5, the perforated grids 10 are moved relative to each other.

The proposed implementation of the device · 5 va allows the precipitation liquid to be fed into the inner zone along the fiber bundle, which improves mass transfer and improves the quality of the fibers.

Claims (2)

The invention relates to the field of the manufacture of chemical fibers and relates to a spinneret kit for forming chemical fibers. On the main auth, sv. No. 735669, a well-known die set for forming chemical fibers, containing a filter bag and nozzles located in a housing, referred to as a central channel for supplying a precipitating fluid, communicating with additional channels, and a reservoir for polymer solution coaxially located relative to the central channel, connected by means of helical channels with a patent for supplying a polymer solution, located coaxially with the central channel 01. However, the well-known die set does not allow to increase fiber, because it does not allow fresh precipitation to be supplied in liquid form (t. into the inner conical bundle of forming fibers. The circuit of the invention is to improve the quality of the fibers. The goal is achieved by having a hollow perforated nozzle, strengthened by a lower end in the central channel for supplying body and made tapering to the free end. The drawing shows a general view of the die set, in section. The die set for forming chemical fibers contains a filter bag 1, dies 2 located in the housing 3, the name of the central one is 4 for supplying the precipitating liquid; communicating with additional channels 5, and a reservoir 6 for polymer solution coaxially located relative to the central channel 4, connected via screw-shaped channels 7 to a pipe 8 for supplying the polymer solution coaxially with the central channel 4, and a hollow perforated nozzle 9 reinforced with a lower end in a central canape 4 for supplying a precipitation liquid and narrowed towards its free end. Perforated grilles 10 are installed on the outer surface of the housing. The device works in the following way. The polymer solution through the pipe 8 and the screw-shaped channels 7 is fed to the tank 6 for the polymer solution. After passing the filter package 1, the polymer solution is forced through the spinnerets. 2. Precipitation liquid through additional channels 5 enters the central channel 4 and is directed to perforated nozzles 9. The precipitation liquid flowing out of the perforated nozzle is directed both to the teeming streams, flowing out of the spinnerers, and is directed inside the fiber bundle, which eliminates stagnation zone inside the bundle of fibers. To regulate the flow of precipitation fluid into the additional channel, the perforated gratings 10 are moved relative to each other. The proposed embodiment of the device permits the deposition liquid to be introduced into the inner zone along the fiber bundle, which improves the mass transfer and improves the quality of the fibers. The invention of the die set for the formation of chemical fibers, by author. St. No. 735669, distinguished by the fact that, in order to improve the quality of the fibers, it has a hollow perforated nozzles, reinforced with a lower end in the central channel for supplying a precipitating fluid and tapering towards its free end. Sources of information taken into account in the examination 1. USSR author's certificate 735669, cl. D 01 D 5/08, 1978.