JPH05125636A - Method and device for producing bulky textured yarn - Google Patents

Abstract

PURPOSE:To provide the subject textured yarn having maximum expressed bulkiness by carrying a synthetic yarn having thermal shrinkability and preliminarily subjected to a twisting bulky processing, giving a physical action such as oscillation, vibration or striking, and subsequently thermally shrinking the yarn. CONSTITUTION:A synthetic yarn 1 having thermally shrinkability and preliminarily twisted for a bulky processing are unwound from a package, delivered from a delivering roller 2 through a guide, continuously or intermittently carried with a carrying device 4 such as a belt, simultaneously thermally shrunk and subjected to a physical action such as oscillation, vibration or striking for the generation of the twists and for a frieze processing by the use of a device for heating the synthetic yarn and giving the physical action such as the oscillation, vibration or striking to the synthetic yarn 1, the device being disposed between the carrying device 4 and the delivering roll 2. The treated yarn is wound into a core package 6 through a heat setter 5 for fixing the twist and frieze of the yarn to obtain the objective bulky textured yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber yarn which has been previously processed to be bulky, by imparting a three-dimensional meandering freeze form to the production of a bulky processed yarn which maximizes bulkiness. A method and apparatus.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a bulky processed yarn that imparts a freeze form, batch heat setting method tumbling autoclave processing and continuous heat setting method SUPERBA (France) heat set by m / c Generally, the processing and the MF / heat-set processing in which the MF (Method of Frije) device for buckling crimping manufactured by the company is incorporated in the yarn supplying section of the processing m / c is practically used. ..

[0003]

[Problems to be Solved by the Invention] In tumbling and autoclaving, a synthetic fiber yarn that has been bulked in advance is twisted, then fried, then bulked with a dumble dryer, and steam set with an autoclave. After being applied, it consists of five steps of rolling up into a corn or cheese shape, and is characterized by a large effect of producing fine crimps and a strong freeze form. However, the above-mentioned tumbling / autoclave processing has a drawback that there is a large difference in the freeze form between the inner layer and the outer layer of the ridge, and also has the drawback of low productivity and high cost due to multiple steps.

Further, in the case of continuous heat setting processing, since it can be produced by two steps of twisting and steam setting, the productivity is high and the cost is low, but since there is no action like tumbling, a freeze shape cannot be obtained. It has the drawback of

Further, in the case of continuous MF / heat set processing, although the freeze shape is obtained by the MF apparatus, the development of fine crimps, which are seen in each single filament filament of the processed yarn, is caused by tumbling It has a defect that it is inferior to autoclave processing, and none of the above-mentioned conventional methods is satisfactory.

An object of the present invention is to impart a three-dimensionally meandered freeze morphology to a synthetic fiber yarn that has been bulked beforehand to continuously produce a bulky processed yarn that maximizes bulkiness. Moreover, it is an object of the present invention to provide a method and an apparatus for producing a uniform and uniform product.

[0007]

The present invention which achieves the above object has the following constitution. That is, when a prefabricated synthetic fiber yarn having heat shrinkability and twisted is made to run continuously or in an intermittent state, and heat shrink treatment is performed in a relaxed state, the synthetic fiber yarn in the heated state is used. This is a method for producing a bulky processed yarn, which is characterized in that the yarn is subjected to physical actions such as rocking, vibration and striking.

An apparatus for continuously or intermittently loading and transporting a prefabricated synthetic fiber yarn having heat shrinkability and twisted, and the synthetic fiber yarn to be transported. A bulky processed yarn producing device comprising: a heating device for shrinking by heating and a device for imparting a physical action such as rocking, vibrating, and striking to the synthetic fiber yarn heated by the heating device. ..

The above-mentioned synthetic fiber yarn is preferably used for carpet pile composed of spun yarn or multifilament yarn. Hereinafter, the present invention will be described in more detail. The prefabricated synthetic fiber yarn of the present invention can be applied to ordinary synthetic fibers, for example, polyamide, polyester, acrylic, polypropylene, etc., and these synthetic fiber yarns are previously known to be bulked, for example, false twisting method,
A fluid turbulent flow processing method and a buckling crimp processing are applied.

By applying the above-mentioned bulkiness processing, a bulkiness-processed thread in which internal strains that do not appear to be bulky are left, and these bulky-processed threads are twisted and twisted. In, it is important to have heat shrinkability.

The above-mentioned bulky and twisted synthetic fiber yarn having heat shrinkability is made to run continuously or intermittently, and then, when heat shrink treatment is performed in a relaxed state, rocking, By giving a physical action such as vibration or hitting, twisting or reversal of the yarn due to twisting torque is caused, and at that time, internal flaws formed by bulky processing become fine crimps. At the same time, the thread thickness increases,
Increases twisting torque to make freezes smoother. And after processing, single filament filament 1
It is possible to obtain a processed yarn having a strong freeze morphology in which fine crimps are developed in each book.

The above-mentioned bulky and twisted synthetic fiber yarn is 5% in order to obtain the desired freeze form.
It is preferable that it has the above-mentioned heat shrinkage rate. The twist is twisted or twisted, and if twisted, the twist coefficient {denier ^1/2 × twist number (t / m)} is 370.
It is preferably 0 or more, and in the case of twisting, it is preferable that the twist balance (number of upper twists / number of lower twists) is 0.7 to 1.8 and the upper twist coefficient is 6000 or more.

The heat shrinkage ratio of the present invention is measured by the following method. That is, a yarn length of 50 cm when a load of 1 mg / d is applied to the twisted yarn is marked, and the yarn is 98 ° C ×
After hot water treatment for 30 minutes and air drying, the yarn length L under a load of 1 mg / d was measured again, and the heat shrinkage rate was calculated by the following formula.

Thermal shrinkage (%) = {(50−L) / 50} × 100 where L represents the yarn length (cm) after hot water treatment.

Next, the method and apparatus for producing a high-loft processed yarn of the present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a process chart showing an example of the method for producing a high-loft processed yarn according to the present invention. FIG. 2 is an enlarged perspective view of a main part of FIG.

In FIG. 1, a prefabricated synthetic fiber yarn 1 which is heat-shrinkable and twisted is unwound from a package and sent out through a guide to a roll 2.
And a synthetic fiber yarn provided between the transport device and the delivery roll 2 while being continuously or intermittently stacked and transported by a transport device 4 such as a belt (made of stainless steel in the illustrated example). By the device 3 which also serves as a heating device for the filament and a physical action such as rocking, vibrating, hitting, etc. to the synthetic fiber yarn, the physical action such as rocking, vibrating, hitting is given while being heated and contracted, and It is subjected to expression and freeze processing. Then, on the conveying device 4, it is wound into a cone package 6 via a heat setter (steam treatment in the example of the drawing) 5 for fixing the crimp and freeze. As shown in FIG. 2, the heating device 3 is composed of an inner cylinder 7 and an outer cylinder 8. The inner cylinder 7 is provided with a large number of steam passage holes 9 by punching holes, and two steam passage holes 9 are formed in the inner longitudinal direction. Blades 10, 10 'are mounted at intervals. Then, the steam passes through the route of the inlet 11, the steam passage hole 9, and the outlet 12, and is sprayed onto the synthetic fiber yarn passing through the inside of the inner cylinder 7. Further, the inner cylinder 7 is oscillated by the belt 13, but the synthetic fiber yarn passing through the inside of the inner cylinder 7 has the blades 10, 1 described above.
An oscillating motion such that the synthetic fiber yarn is lifted or lifted up between 0'is provided. Therefore, the synthetic fiber yarn is heated and shrunk while being physically contracted by oscillating, vibrating, striking, or the like. The action is given, and the crimp is developed and the freeze processing is performed.

The bulky processed yarn producing apparatus according to the present invention is not limited to the swinging method shown in FIGS. 1 and 2, but may be any apparatus for imparting other physical actions such as vibration and impact. It is included. Further, the heating device and the device for imparting a physical action such as rocking, vibrating, or striking to the synthetic fiber yarn can be provided separately.

FIGS. 3 and 4 are schematic views for explaining the frozen form of the processed yarn and the fine crimp form of the single yarn filament, respectively. 3 and 4 show
Both are examples of polyamide continuous fiber continuous yarn processing,
(A) is the present invention, (B) is a comparative example SUPE
The freeze form of the processed yarn and the fine crimped form of the same filament by the continuous heat setting process of m / c manufactured by RBA are shown.

FIG. 3 (B), which is a comparison object with the freeze form of FIG. 3 (A) according to the present invention and the fine crimp of FIG. 4 (A),
A significant difference is observed with respect to FIG. 4 (B), and the desired freeze morphology and filament fine crimp development which are the object of the present invention are obtained.

[0020]

EXAMPLES The present invention will be described in detail with reference to Examples.
The present invention is not limited to these examples. Tables 1 to 3 show the contents of the supplied yarns according to these processing categories (No.).

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

Example Nos. 1 to 3 and Comparative Examples Nos. 1 to 5
Is an example of processing continuous filament continuous yarns of synthetic fibers that have been bulked by a liquid turbulence processing method in advance.
Nos. 4 and 5 and Comparative Examples Nos. 6 to 9 are examples of processing of synthetic fiber short fiber spun yarns that have been bulked in advance by the buckling crimping method in the tow state. Further, in all of the examples of the present invention, bulking is performed in the processing step of FIG. 1 by using the yarn bulking device shown in FIG. 2, and all the comparative examples are the conventional ones which are generally put into practical use. Batch heat set tumbling autoclave processing machine, continuous heat set system SUPERBA heat set processing machine, and MF machine for buckling crimping machine manufactured by the company in the yarn supplying section of the machine. Was processed using an MF / heat set processing machine incorporating

The processing results of the examples and comparative examples thus obtained are shown in Tables 1 to 3. However, the fine crimp of the processed yarn properties, the freeze form and the evaluation symbol for the overall judgment, and the measuring method of the bulk height are as follows. The heat shrinkage was measured by the method described in the text. (1) Evaluation symbols for fine crimps, freeze form and comprehensive judgment The evaluation of fine crimps and freeze forms shows the results of four sensory judgments by visual and tactile judgment of 10 expert panelists. The bulk altitude was also determined.

◎ ... Excellent ○ ... Good Δ ... Poor × ... Poor (2) Measuring Method of Bulk Height FIG. 5 is a schematic view of measuring the bulk height of a yarn. 150 unprocessed yarns are cut into 65 mm length, total weight is measured and used as a sample. The samples are arranged in a U-shaped frame A having an inner size of 50 mm width and 65 mm depth shown in FIG.
After the compressor B having a load of g / cm ² (16.25 g) was gently placed, the heights H of the four corners of the compressor B were measured, and the bulk height was calculated by the following formula.

[0027]

[Equation 1]

From the characteristics of the processed filaments of the continuous filament yarns of Table 1 and the spun filament yarns of Table 2, by applying the processing method of the present invention to the polyamide, polypropylene and polyester materials, the shape of the supply filaments, Even if the composition is different, the level, uniformity, and bulkiness of the freezing pattern of the processed yarn are clearly superior to the various comparative examples. Furthermore, the conventional freezer pattern is strong and good. Even when compared with the autoclave processing, no defects such as the inner and outer layers of the seam of the processing method are recognized. Further, the effect of the present invention is, for example, in the case of a cut pile carpet using these yarns as tufted pile yarns, a feeling of freezing,
The bulkiness is extremely good, and no feeling of bottoming is seen when stepped on.

[0029]

[Effects] The present invention having the above-described structure has the following excellent effects. B) Since fine crimping occurs in each single filament filament of the heat-shrinkable synthetic fiber, it is possible to produce a highly bulky yarn excellent in covering property. (2) Since the yarn can be continuously bulked, the number of steps can be significantly reduced compared to the conventional batch set method, and the productivity can be remarkably improved. C) In the conventional batch set method, since bulkiness and freeze form are different in the inner and outer layers of the ridge due to the treatment with ridges, the present invention can produce uniform bulkiness and freeze-processed bulky yarns. it can.

[Brief description of drawings]

FIG. 1 is a process drawing showing an example of a method for producing a bulky processed yarn according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of FIG.

FIG. 3 is a schematic view of an actual state for explaining a freeze form of a processed yarn.

FIG. 4 is a schematic view for explaining a fine crimped form of a processed yarn filament.

FIG. 5 is a schematic view of measurement of bulkiness of a yarn.

[Explanation of symbols]

1: Pre-bulky synthetic fiber yarn that has heat shrinkability and is twisted 2: Delivery roll 3: Heating device for synthetic fiber yarn (swing, vibration, impact to synthetic fiber yarn, etc.) 4) Transfer device for synthetic fiber yarn 5: Heat setter 6: Package 7: Inner cylinder 8: Outer cylinder 9: Steam passage hole 10, 10 ': Blade 11: Steam inlet 12: Steam exit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shoho Mashita 1-1-1, Sonoyama, Otsu City, Shiga Prefecture Toray Co., Ltd. Shiga Business Site (72) Inventor Motoyasu Suzuki 3-3, Nakanoshima, Kita-ku, Osaka No. 3 Toray Co., Ltd. Osaka office

Claims (4)

[Claims] 1. A heat-shrinkable, twisted and preliminarily bulked synthetic fiber yarn is run in a continuous or intermittent state, and is subjected to a heat-shrinking treatment in a relaxed state, which is in the above-mentioned heated state. A method for producing a bulky processed yarn, which is characterized in that the synthetic fiber yarn is subjected to physical actions such as rocking, vibration, and impact. 2. The method for producing a bulky processed yarn according to claim 1, wherein the synthetic fiber yarn is for a carpet pile composed of spun yarn or multifilament yarn. 3. An apparatus for continuously or intermittently loading and transporting a prefabricated synthetic fiber yarn having heat shrinkability and twisted, and the synthetic fiber yarn to be transported. An apparatus for producing a bulky processed yarn, comprising: a heating device for heating and shrinking; and a device for imparting a physical action such as rocking, vibrating, or striking to the synthetic fiber yarn in a heated state by the heating device. 4. The bulky processed yarn manufacturing apparatus according to claim 3, wherein the synthetic fiber yarn is for a carpet pile composed of spun yarn or multifilament yarn.