Method for the production of a curled synthetic thread
A technology for crimping and threading, which is applied in the complete sets of equipment for the production of artificial threads, heat treatment of artificial filaments, textiles and papermaking, etc., and can solve problems such as reducing the quality of crimping
Inactive Publication Date: 2012-09-05
OERLIKON TEXTILE GMBH & CO KG
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the very large difference in product speed in the two-stage process during production and crimping, in the single-stage process significant problems arise which substantially lead to reduced crimping quality
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] in figure 1 An embodiment of a device for performing the method according to the invention is schematically described in. The device has a heated spinning head 1 which has a spinning nozzle 3 on its underside and a melt inlet 2 on its upper side. Through the melt input 2, the extruder 4 is connected to the spinning head 1. In addition, a member for guiding the melt, which is not described in detail, is provided in the spinning head 1, such as a tube, a spinning pump, and other spinning nozzles.
[0022] The spinning nozzle 3 on the lower side of the spinning head 1 has a number of nozzle holes through which the polymer melt provided by the extruder 4 is extruded into a thin monofilament 5.
[0023] A cooling channel 6 is provided below the spinning head 1, and the cooling channel is combined with a blowing device 7, whereby the flow of cold air is blown substantially transversely to the monofilament 5 for cooling purposes.
[0024] A collection thread guide 8 and a pre-oilin...
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 PUM
| Property | Measurement | Unit |
|---|---|---|
| viscosity | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a method for the production of a curled synthetic thread, according to which a viscous melt of a polymer is extruded into a plurality of filaments. The melt index of propene polymer (PP)-based polymer melt is within the value range of 10-50 when being extruded, or the viscosity of PET-based polymer melt is higher than 220 Pa.s when being extruded. After hardening inside a cooling path, the plurality of filaments are merged into a filament bundle. The filament bundle is extracted with a spin velocity, and is accelerated to a treatment velocity. The filament bundle is subsequently curled with false twist texturizing and wound onto a spool. In order to achieve an optimum between processing stability and curling, the spin velocity during the extraction of the filaments and the treatment velocity for the stretching of the filaments are adjusted to each other in such a way, according to the invention, that the filaments have a permanent elongation in the neighborhood of between 20% and 80% before the false twist texturizing. The spinning speed of the filament bundle is selected within the range of 150-400 m / min. After being extruded, the filaments are cooled within the path of 500-2000 mm and are combined into a filament bundle.
Description
Technical field [0001] The present invention relates to a method for manufacturing crimped synthetic thread. Background technique [0002] In the production of crimped synthetic threads, a two-stage method is particularly used for textile threads. In the first method step, the synthetic threads made of polymer melt are extruded, cooled, stretched and wound in the form of many thin filaments. Wound into a bobbin. The thread here has more or less smooth monofilaments, which are preferably mixed with one another by air vortex deformation to form thread tightness. In the second method step, the thread is drawn from the bobbin and crimped by crimping, preferably false-twist crimping. Depending on the conditions of the smooth thread, it is additionally possible to perform stretching before or during the false-twist crimping of the thread. After the false twist crimping is deformed, the crimped yarn is wound into a bobbin. Although this two-stage manufacturing process of crimped thr...
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D10/02D02J1/22D02G1/02
CPCD02J1/22D02G1/0213D01D13/00D02G1/0266D01D10/02
Inventor 克劳斯·舍费尔汉斯-格哈德·许特尔沃尔夫冈·内勒
Owner OERLIKON TEXTILE GMBH & CO KG