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Method and device for melt spinning and cooling a multifilament thread

A technology of melt spinning and equipment, applied in the field of equipment for implementing the method, can solve problems such as inability to measure and monitor the quality of filaments, and inability to measure and measure accuracy.

Inactive Publication Date: 2008-11-26
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these physical parameters such as filament titer, strength or birefringence can hardly be detected with a sufficiently high measurement accuracy on the moving filament, so that sufficient measurement and monitoring for determining the filament quality cannot be achieved

Method used

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  • Method and device for melt spinning and cooling a multifilament thread
  • Method and device for melt spinning and cooling a multifilament thread
  • Method and device for melt spinning and cooling a multifilament thread

Examples

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Embodiment Construction

[0041] 1 and 2 show a first exemplary embodiment of a device according to the invention for carrying out the method according to the invention for melt spinning and cooling multifilaments. Here, Figure 1 is shown in cross section figure 2 The device is shown schematically in side view. The following description is valid for both figures as long as it is not explicitly directed to a certain figure.

[0042] The first embodiment shows a spinning head 1 for mounting spinning nozzles 2 . The spinning nozzle 2 has a plurality of nozzle openings (not shown here) on the underside of the spinning head 1 , which are connected to a melt feed 4 . The spinneret 1 is connected via a melt feed 4 to a melt source, for example an extruder. For distributing and guiding the polymer melt fed in via the melt feed 4 to the spinning nozzle 2 , a number of other devices are arranged inside the spinning head 1 , such as melt spinning pumps and distribution lines. The spinneret 1 is designed to be...

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Abstract

The invention relates to a method for melt spinning and cooling a multifilament thread and to a device for carrying out said method. According to said method, a plurality of filaments is extruded from a polymer melt, said filaments being guided in a filament bundle and cooled by a cooling air stream that passes transversally across the filament bundle, the temperature of the cooling air that is evacuated during the cooling of the filaments being measured and monitored. To detect the cooled state of the filaments and the characteristics of the thread derived from said state, the temperature of the cooling air is measured at least at one measuring point inside the filament bundle. To achieve this, a temperature sensor is located inside the filament bundle between the spinneret and a thread guide that is allocated to the latter.

Description

technical field [0001] The invention relates to a method for melt spinning and cooling multifilaments according to the preamble of claim 1 and a device for carrying out the method according to claim 11 . Background technique [0002] During the production of synthetic filaments from polymer melts, the filaments consist of a plurality of thin strip-like monofilaments. For this purpose, each individual filament is extruded from the polymer melt through the nozzle openings of the spinning nozzle. After extrusion, the individual filaments guided at a distance from one another within the tow are cooled and subsequently assembled into filaments after solidification. The basic physical properties of the subsequent filaments are determined by certain cooling conditions during the transition of the monofilament material from the melt state to the solidified state. Therefore, maintaining the uniformity of cooling conditions is of great significance for producing high-quality filamen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/088
CPCD01D5/088D01D13/02
Inventor D·舒尔茨
Owner OERLIKON TEXTILE GMBH & CO KG
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