Method for melt spinning, stretching and winding multifilament thread and device for carrying out same

A technology of drawing yarn and melt spinning, applied in the field of devices implementing the method, can solve problems such as high equipment costs, and achieve the effect of efficient treatment
CN102131965AInactive Publication Date: 2011-07-20OERLIKON TEXTILE GMBH & CO KG
4 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OERLIKON TEXTILE GMBH & CO KG
Publication Date
2011-07-20
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for melt spinning, stretching and winding a multifilament thread to form an FDY yarn, and a device for carrying out the method. First, a plurality of filaments made from a thermoplastic melt are extruded, cooled to a temperature below the glass transition temperature of the plastic material, and combined to form a filament bundle with no addition of a preparation fluid. Then, the filament bundle is drawn off at a speed of greater than 1500 m / min, heated to a temperature above the glass transition temperature of the thermoplastic material and stretched at a stretching speed of greater than 4000 m / min. The filament bundle is led through a hot air atmosphere of a heating tube for providing non-contact heating. Then, the filament bundle is prepared with a preparation fluid and the thread is wound into a coil. In the device according to the invention, the preparation device is disposed downstream of the heating means in the thread direction, wherein the heating means, which is a heating tube with a hot air atmosphere for non-contact heating of the filament bundle, is disposed between the drawing-off galette and the stretching galette.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for melt-spinning, drawing and winding multifilaments to form FDY yarns and a device for carrying out the method according to the preamble of claim 7 . Background technique

[0002] A similar method for melt-spinning, drawing and winding multifilaments and a device for carrying out the method are known, for example, from DE 31 46 054 A1.

[0003] When producing synthetic yarns, they are divided into so-called POY filaments and FDY filaments according to the degree of orientation of the molecular chains of the polymer material inside the yarn. Pre-oriented yarn (POY) has a pre-oriented, but not yet stretched structure. Such yarns are preferably further processed in a stretch extrusion process. In contrast, fully drawn yarn (FDY) has an oriented and drawn structure. These yarns can be directly processed into flat products without further treatment.

[0004] In order to be able to produce so-called FDY filaments in a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More