JPH02500375A - Method for pre-entangling synthetic multifilament-supplied yarn and yarn produced by this method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Pre-entangling method of synthetic multifilament feed system and fabricated by this method Yarn The present invention relates to a textured or smooth yarn for knitted fabrics (Glattgar ) to produce stretched, textured and stretch-textured Unstretched or partially stretched, subjected to at least one processing selected from the group consisting of (LOY, MOY, POY, FOY) Preliminary replacement of synthetic filament supply system The present invention relates to the Vorwirbeln method.

In order to run the multifilament synthetic yarn without any problems during further processing, Sufficient thread bundling is necessary. multifilamen It has been recognized that heating and sizing are suitable for converging yarns in ing. However, these two methods require large amounts of money in terms of mechanical and transport technology. Requires costs.

Aerodynamic methods were developed to achieve useful thread focusing, and in this method constant The yarns under tension are entangled by compressed air from a nozzle. This operation The process is done after texturing or stretching.

According to European Patent Application No. 0137088, the false-twisted texture Approximately 0.51 kg/CIIz (0,5 Bur) No compressed air is weakly interlaced, too concentrated interlacing points in the form of nodules There are no known entanglement methods to prevent the original texturing from being disturbed by be. Knots that occur in the feeding system will be resolved during further processing of this yarn to eliminate obstructions. Needs to be removed. The problem with this known method is particularly in the case of finely fibrillated yarns. The purpose is to reduce thread breakage. This thread is textured and then interlaced. let At that time, the yarn bunching that occurs in the textured yarn is the same as in the feeding system. It has the same problem, i.e. to improve or guarantee properties that can be further processed. ing. However, the confounding points created by the known method do not result in uniform appearance of the product. This method has the disadvantage of causing confusion especially in the case of thin numbers. Conventionally, thread was threaded without any problems. The fabric uses textured yarns that are entangled enough to run. This processing system gave the produced articles a non-uniform appearance. .

The problem of the present invention is to provide a textured or drawn filament yarn. Ensures good yarn gathering and trouble-free yarn running during further processing. , to provide a method that makes it possible to produce knitted fabrics that are as uniform as possible. It is in. .

The present invention helps solve this problem by providing a feed system with a stretched or textured surface. At least one type selected from the group consisting of processed drawings and stretched textured processed drawings 0.51 to 3.06 kg/cn" (0.5 to 3 bar) before introducing it into the processing drawing. The method is characterized in that the interlacing is performed at the air pressure of (1).

Surprisingly, textured processing can reduce the degree of entanglement in the supply system. on the other hand, to achieve the necessary thread convergence in the texture. I was able to do that. The same holds true for known drawing methods for drawing feed systems into smooth yarns. 0 When pre-entangling is performed by the method of the present invention, the yarn is placed in a texturing device. Approximately 0.51 to 3.06 kg/cm” (0.5 ~3.0 bar), especially 1.02~2.55 kg/cm'' (1.0~2.5 bar) ), preferably 1.53-2,04 kg/cm" (1,5-2 ．． Heating is carried out by means of air pressure (0 bar).

“Continuous” formation of pre-entangled yarns that are both textured and smooth yarns It is both advantageous and surprising to be able to have confounding properties that . By the term "continuous" confounding, we mean periodic intervals, as opposed to known confounding. A cross that does not have clear confounding points, which is characteristic of clearly visible nodules. Indicates how to connect.

In the preferred pressure range, the number of fluffs is approximately 80 fluffs per 100,000 m of yarn length. The feathers are minimal and give the fabric a uniform appearance. What is fluff? means a thread element protruding from the center of a filament and/or thread It shall be. The measurement of fluff was carried out by Messkopf in the East. I went. This measuring device operates according to the a priori principle. Inspection speed is 1000e /min and the length of thread tested was 1.6 x 10’m in each example. Ta.

Next, the present invention will be explained with reference to examples.

Ura Shigo! A polyester-POY with a nominal number of 100 dtex/72 f is used as the supply system. used. As a nozzle for entangling, a two-hole nozzle with a small opening, such as an air passage. A diameter of 0.7 mm was optimal. However, a certain pressure within the required range Other conventionally used entangling nozzles can also be used. confounding Later, FK6-CF-Tex of Palmag AG and BARMAG AG. Texturing was carried out with a chard processing machine at 500 m/min.

In each case, eight bobbins were obtained, each wrapped with 1.8 kg of thread. . The experimental results are summarized in the table below.

The degree of entanglement is 21/2 in textured yarn without interlacing treatment. Starting from the basic value of the number of nodules in m, 2.55 kg/cm2 (2.5 bar The number of nodules increased continuously to 65/I11 at an air pressure of The number of nodules 2.55 kg/cm" (2.5 bar) This is necessary for further processing. That's true, and it's surprising. In the example described as a normal confounding case, Texturing is followed by entangling in a known manner, followed by winding. Ta.

Implementationffl! Polyester with nominal number 167 decitex/36f, large square cross section as supply system -POY was used and processed by the method of the present invention. Please refer to the test results in Table 2. Stop and show. The same trends can be observed in the running condition of the yarn, the number of knots, and the appearance of the fabric. These embodiments will be summarized and further explained with reference to the drawings.

Figure 1 shows the measurement results obtained when confounding occurs using an example of the method of the present invention using the conventional method. Figure 2 is a diagram showing the appearance of an example of an article using unentangled yarn. , i3 [by the method of the present invention, the air pressure is 2.55 kg/cm" (2.5 bar) A diagram illustrating the appearance of an example of an article using pre-entangled yarn, Figure 4 shows normal entanglement at an air pressure of 2.55 kg/cm" (2.5 bar). Figure 5 is a diagram showing the appearance of an article using thread that has been subjected to this process. It is a diagram showing measurement results when two types of yarns are used.

FIG. 1 shows an unentangled yarn 1 and a yarn with a weight of 2.55 kg/cm" (2, 2.55 kg/cm" (2.5 bar) ), the essential difference from ordinary intertwined threads is the thickness of the threads. ke) is shown based on the measurement records of the device that measures ke). Measurement is done by Visco Suisse S VISCOSUISSE SA's confounding degree measuring device type KMG- 4 was used.

There is no unevenness in the appearance of the article shown in FIG. 2 obtained using unentangled yarn. latitude The thread often breaks during thread insertion (weaving), resulting in extremely poor thread running. This makes processing such threads uneconomical.

Figure 3 shows that the method according to the invention is used to predict The appearance of an article using entangled yarn is shown.

Although mild confounding nodules are seen in this case, the product results are indicated as good. be able to.

Figure 4 shows normal entanglement at 2.55 kg/cm2 (2.5 bar). An example using thread is shown. This article has extremely strong unevenness caused by interlacing knots. unusable due to

In the example shown in Figure 5, the measurement record of the yarn thickness has a nominal number of 167 d Typical differences in the manner of confounding between the two types are shown in the case of Tux/36f.

Curve 4 shows the case of pre-entanglement by the method of the present invention, and curve 5 shows the case of normal entanglement. This shows the case of a straight thread.

The fabrics shown in Figures 2 to 4 are all made of gripper projectiles (Greifer). -Projektil) Weaving by a loom at a weft insertion speed of 800 m/min, then It was dyed and fixed.

The textured yarn produced by the method of the present invention provides a desirable article appearance for textiles. give. This is clearly due to the confounding nodules generated during texturing. and the remaining confounding approaches so-called “continuous” confounding. This is because only widespread resolution occurs. The advantage of continuous confounding, so to speak, is above all This results in less unevenness in the fabric and, at the same time, sufficient quality for defect-free processing. It is possible to obtain a bundle of threads.

FIG.! FIG. 5 (Correction) Copy and translation of written amendment) Submission (Article 184-7, Paragraph 1 of the Patent Law) Heisei 1st year March 16th Director General of the Patent Office Yoshi 1) Takeshi Moon 1. Display of patent application PCT/CH8810O121 , name of invention Pre-entangling method of synthetic multifilament feed system and fabricated by this method thread 3. Patent applicant Address: Zeher, Switzerland - 6020 Emmenprützke (no street address) Name: Viscowisse S.R. Representative: Stechelin El Same as Heermann P. Nationality: Switzerland 4. Deputy manager 6. List of attached documents (1) Copy and translation of written amendment) 1 amended scope of claims 1. For producing textured yarn or smooth yarn for textile fabrics , from the group consisting of stretched, textured and stretch textured Partially oriented synthetic multifilament-PO subjected to at least one selected processing In pre-entangling the Y supply system, the supply system is heated at 0.51 to 2.55 kg/cr. B” (a combination characterized by entangling at an air pressure of 0.5 to 2.5 bar Pre-entangling method for multifilament supply system.

2. In the empty, air-entangled yarn produced by the method according to claim 1, An air entangled yarn characterized in that the yarn has uniformly formed entanglements.

3. In the air-entangled yarn produced by the method according to claim 1, The textured yarn has a weight of 1.53 to 2.04 kg/an” (1.5 to 2.0 less than 85 fuzz per 100,000 m of yarn at an entangling pressure of and having a number of nodules less than 65 nodules per 11 air entangled yarn.

4. Use of the air-entangled yarn according to claim 2 or 3 for producing a uniform fabric. .

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Claims (1)

[Claims] 1. To produce textured yarns or smooth yarns for textile fabrics, Select from the group consisting of stretched, textured and stretched textured. unstretched or partially stretched (LOY, MOY, POY, FOY) When pre-entangling the synthetic multifilament supply yarn, The supplied yarn is subjected to a drawing processing area, a texture processing area, and a drawing texture processing. Before introduction into at least one processing zone selected from the group consisting of zones, 0.51~ The interlacing was carried out at an air pressure of 3.06 kg/cm2 (0.5-3 bar). A method for pre-entangling synthetic multifilament yarn. 2. In the air-entangled yarn produced by the method according to claim 1, An air-entangled yarn characterized in that the yarn has entanglements formed in a "continuously low" manner. 3. In the air-entangled yarn produced by the method according to claim 1, The textured yarn has a weight of 1.53 to 2.04 kg/cm2 (1.5 to 2.0 less than 85 fuzz per 100,000 m of yarn at an entangling pressure of characterized by having a number of nodules and having a number of nodules less than 65 nodules per m Air-entangled yarn.