KR20130064640A - Preparation method for a melted partially yarn allowing to control the degree of fusion - Google Patents

Abstract

PURPOSE: A method for fabricating a partially melted false twist yarn is provided to control melt-bonding degree when manufacturing the partially melted false twist yarn, and to fabricate a fabric with desired texture. CONSTITUTION: A method for fabricating a partially melted false twist yarn comprises a step of partially melt-bonding a synthetic fiber filament yarn through a melt twisting machine comprising a first feed roller, a first heater(4), a yarn guide(2), a cooling plate, a second feed roller, a false twisting unit, a second heater, and a winding machine. The melt-bonding degree is controlled by adjusting the aspect ratio of the yarn guide. The yarn guide is connected to a motor and an inverter and is driven to control rotation speed.

Description

Manufacturing method of partial welded twisted yarn which can control welding degree {PREPARATION METHOD FOR A MELTED PARTIALLY YARN ALLOWING TO CONTROL THE DEGREE OF FUSION}

The present invention relates to a method for manufacturing a partially fused twisted yarn that can control the degree of fusion, and more particularly, the yarn guide in the conventional fused twisted yarn is changed from a circular shape to an elliptic shape, and installed in a driving type to form a fusion rate. It relates to a method of manufacturing a partially fused false twisted yarn having the shape and function of natural hemp to control the.

Linen Like Yarn (LLY), which has the shape and function of hemp fibers in natural fibers, can be produced by partial fusion of polyester.

The fusion false twisted yarn first visually expresses the effects of three tones, i.e., deep, medium, and pale, irregularly so that the lyrical feeling is stronger than the modern and chic feeling in the fabric.

In addition, the touch of the fused false twisted yarn is rough and stiff, the moisture (for example, sweat, etc.) is easily released in the air due to the difference in the bulk of the three tones, it is excellent in breathability to maintain a clean and cool feeling, fused twisted yarn Applied to general garments, bags, bedding, curtains, shoes, tablecloths, etc.

The prior art for producing the polyester partially fused false twist yarn having the appearance and function of natural hemp is as follows.

In Korean Patent Application Publication No. 1996-0023365, a polyester post-stretched yarn is manufactured using a polyester undrawn yarn with a spinning speed of 3,000 m / min. Disclosed is a method for producing a modified polyester posture twisted yarn, characterized in that a ceramic drawing guide having a friction coefficient of 0.4 to 0.45 is attached and drawn when measured at a yarn speed of / min.

Korea Patent Registration No. 0252702 call in, but false-twist polyester salt reflection, high and a combustible temperature (T _w) than 200 ℃ and lower than 240 ℃, haeyeon tension (T ₂₎ and the ratio (K = a twist tension (T ₁₎ T ₂ / T ₁ ) is greater than 0.4 and less than 0.8, and the winding tension (T ₃ ) is greater than 0.05 g / de and less than 0.150 g / de and combustible, characterized in that Is starting.

Referring to Figure 1, the fusion combustor used in the prior art supplies a thermoplastic synthetic fiber filament yarn (A) such as polyester to the first feed roller (3) through the tube guide (1), the supplied synthetic fiber The filament yarn A is configured to be stretched and combusted between the second feed roller 6 via the heater 4, the cooling plate 5, and the combustion unit 7.

The conventional fusion combustor shown in FIG. 1 has a limit in controlling the degree of fusion in the combustion process, that is, the length and the degree of fusion of the fusion site of the synthetic fiber filament yarn (A).

Conventional fusion combustor has a yarn guide (2) between the synthetic fiber filament yarn (A) is supplied to the heater (4) and the cooling plate (5), the yarn guide (2) is usually provided in a bearing form Since the synthetic fiber filament yarn (A) is rotated by the passing tension, the combustible tension becomes high, which acts as a factor that prevents fusion, and thus there is a problem in that the production speed is lowered without a stable fusion running inside the heater.

An object of the present invention relates to a method for producing a partially fused twisted yarn which can control the degree of fusion in the manufacturing process of a partially fused twisted yarn having the appearance and function of natural hemp by partially fusion of synthetic fiber filament yarn using a fused twisted yarn. .

In order to achieve the above object, the present invention provides a synthetic fiber filament yarn through a fusion combustor consisting of a first feed roller, a first heater, a yarn guide, a cooling plate, a second feed roller, a combustion unit, a second heater and a winding machine. As a method of producing a fusion spliced twisted yarn by partial fusion, there is provided a method of manufacturing a partially fused twisted yarn characterized by controlling the aspect ratio of the yarn guide to control the degree of fusion.

In the present invention, in order to control the fusion rate by adjusting the aspect ratio of the yarn guide is used as the yarn guide is made of an elliptical having an aspect ratio of 9: 1 or more and less than 5: 5.

In one embodiment of the present invention, the yarn guide is preferably connected to the motor and the inverter is forcibly driven to enable the rotational speed adjustment.

Polyester, polyamide, etc. may be used as the synthetic fiber filament yarn in the manufacturing method of the partially fused twisted yarn according to the present invention, but is not necessarily limited thereto.

The present invention can control the degree of fusion in the manufacturing process of the partially fused twisted yarn having the appearance and function of natural hemp by partially fusion of synthetic fiber filament yarn to produce a partially fused twisted yarn that can produce a fabric showing the desired look and feel It may provide a method.

1 is a view schematically showing the structure of a fusion combustor of the prior art.
2 is a perspective view of a circular yarn guide used in the prior art fusion combustor.
FIG. 3A is a plan view of a circular yarn guide used in a fusion combustor of the prior art, and FIG. 3B is a plan view of an elliptical yarn guide used in a fusion combustor used in the present invention.
Figure 4 is a schematic view showing the principle of controlling the welding degree by varying the length of the contact portion of the heater and synthetic fiber filament yarn when rotating the elliptical yarn guide of the fusion combustor used in the present invention.
5 is a view schematically showing a repeating unit in which an unstretched portion and a fusion portion of a partially fused twisted yarn manufactured according to the present invention are formed.

Hereinafter, a method of manufacturing partially fused false twist yarn according to the present invention will be described in detail with reference to the drawings.

The fusion combustor used in the manufacturing method of the partially fused twisted yarn according to the present invention has the same structure except that the shape of the yarn guide 2 is elliptical in the fusion combustor of the prior art shown in FIG.

Referring to Figure 1, the fusion combustor according to one embodiment used in the present invention tube guide (1), the first feed roller (3), the first heater (4), elliptical yarn guide (2), snail ( The yarn guide 6, the cooling plate 5, the 2nd feed roller 6, the combustible unit 7, the 2nd heater 10, and the winding machine 12 are comprised.

Synthetic fiber filament yarn is supplied through the tube guide 1 of the fusion combustor, and is transferred to the first heater 4 through the first feed roller 3 capable of maintaining a constant speed, the yarn guide 2 and It cools through the cooling plate 5. Then, the synthetic fiber filament yarn is stretched and combusted in the combustion unit 7 through the second feed roller 6 and heat-set in the second heater 10.

2 and 3, the yarn guide 2 used in the fusion combustor of the present invention is elliptical rather than using a circular yarn guide 2 as shown in FIGS. 2 and 3 (A). Use the yarn guide (2).

In the manufacturing method of the partially fused twisted yarn according to the present invention, by adjusting the aspect ratio of the elliptical yarn guide 2, the length of the yarn to be fused can be short or long.

More specifically, in the present invention, the yarn guide 2 for conveying the synthetic fiber filament yarn which is installed and supplied between the first heater 4 and the cooling plate 5 of the fusion combustor uses an elliptical shape. Thus, as shown in FIG. 4, the elliptical yarn guide 2 rotates to vary the length of the portion where the first heater 4 and the synthetic fiber filament yarn 20 come into contact with each other.

That is, in the manufacturing method of the partially fused twisted yarn according to the present invention, by adjusting the aspect ratio of the elliptical yarn guide 2, the first heater 4 and the synthetic fiber filament yarn 20 are fused at different lengths. The length of the thread can be controlled relatively short or long.

In addition, in the present invention, by adjusting the rotational speed of the elliptical yarn guide 2 by a motor (not shown) with an inverter, the length of the portion where the first heater 4 is in contact with the synthetic fiber filament yarn 20 is different. It is also possible to easily control the length of the yarn to be bonded relatively short or long.

In one embodiment of the present invention, the aspect ratio (a: b) of the elliptical yarn guide 2 can be controlled to 9: 1 or more but less than 5: 5, but is not necessarily limited thereto.

Polyester, polyamide, etc. may be used as the synthetic fiber filament yarn, which may be applied to the method of manufacturing a partially fused false twist yarn according to the present invention, and it is preferable to use polyester.

In one embodiment of the present invention, in the case of using polyester as the synthetic fiber filament yarn, the combustible temperature (T _w ) is set to 190 to 270 ° C, the winding tension is set to 0.03 to 0.15 g / d, and the drawing section It is preferable to produce polyester partially fused false twist yarn with the draw ratio of 1.05 to 1.50, the speed of the elliptical yarn guide to be 0 to 500 m / min, and the diameter of the elliptical yarn guide to be 5 to 100 mm. .

The polyester partial fusion false twist yarn manufactured as described above is composed of the unstretched portion 100 and the fusion portion 110 as the degree of fusion is controlled as shown in FIG. 5, and they are repeatedly formed. The unstretched portion 100 is shown in deep color, gives a relatively soft feeling to the fusion portion 110, the fusion portion 110 is a light color and is a part that gives a stiff and rough feeling of hemp.

Hereinafter, preferred embodiments and test examples of the present invention will be described in detail. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

The embodiments, test examples, and drawings described in this specification are preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, so that there are various equivalents and modifications that can be substituted at the time of the present application .

Example  One

The polyester filament yarn was fed to a fusion combustor composed of a first feed roller, a first heater, a fixed yarn guide, a cold plate, a second feed roller, a combustible unit, a second heater and a winder shown in FIG. A non-drawn yarn with a spinning temperature of 290 ° C, a spinning speed of 3100 m / min, and a draw ratio of 1.005 was used as a simulation. A guide speed of 4000 rpm and a burning rate of 450 m / min were used, and polyester partially fused twisted yarn was prepared under the burning conditions described in Table 1 below.

Example  2

A polyester partially fused twisted yarn was prepared in the same manner as in Example 1 except that an oval having an aspect ratio of 7: 3 using a yarn guide.

Example  3

A polyester partially fused twisted yarn was prepared in the same manner as in Example 1 except that an elliptical aspect ratio of 6: 4 used a yarn guide.

Test Example  One: Fusion  Measurement of length and number

The length and number of fusion portions of the polyester partial fusion twisted yarns prepared in Examples 1, 2 and 3 can be prepared by 1m plate with a 1mm scale and fix the fused twisted yarn at 0 and 1m. The pins were flowered and the fused twisted yarns were wound and fixed on both pins under the condition of flattening under pressure, and then the length and number were visually measured. After measuring the fused false twist yarn under the same conditions five or more times in this manner, and recorded the average data is shown in Table 1 below.

division Flammable condition Mihaeyeon Mou Fusion
Length
(cm) Welding
amount
(ea / m) Maritime Aspect ratio T _w
(℃) Stretching cost
(D / R) Example 1 8: 2 225 1.204 none Good 1 to 7 12 Good Example 2 7: 3 225 1.204 none Good 2 to 9 12 Good Example 3 6: 4 225 1.204 none Good 2 ~ 13 13 Good

Referring to Table 1, it can be seen that the greater the difference in aspect ratio of the elliptical yarn guide, the smaller the length and the number of fusions of the fusion. When processed into low-melting false twisted yarn, the firm texture is lowered, the softer touch is increased, and the three tone (dark, medium, and pale) effects are slightly lower, indicating a softer tone. If the degree of fusion is high, the opposite effect will be expressed.

1: tube guide 2: yarn guide
3: first feed roller 4: first heater
5: cooling plate 6: snail yarn guide
7: flammable unit 8: second feed roller
10: second heater 11: oiling roller
12: winding machine 20: synthetic fiber filament yarn
100: undrawn portion 110: welded portion

Claims (8)

A method of producing a fused twisted yarn by partially fusion of synthetic fiber filament yarn through a fused combustor composed of a first feed roller, a first heater, a yarn guide, a cooling plate, a second feed roller, a combustible unit, a second heater, and a winder. As
Method of manufacturing a partially fused false twist yarn characterized in that to control the fusion rate by adjusting the aspect ratio of the yarn guide.
The method according to claim 1,
A method for producing a partially fused false twist yarn characterized in that the degree of fusion is controlled by using an ellipse having an aspect ratio of from 9: 1 to less than 5: 5 as the yarn guide.
The method according to claim 1,
The yarn guide is connected to the motor and the inverter is a method of manufacturing a partially fused combustible yarn characterized in that the rotational speed is adjustable.
The method according to claim 1,
The synthetic fiber filament yarn is a method of producing partially fused false twist yarn, characterized in that the polyester or polyamide.
The method of claim 4,
When the synthetic fiber filament yarn is polyester, the combustible temperature (T _w ) is 190 to 270 ° C, the winding tension is 0.03 to 0.15 g / d, the stretching ratio of the stretching section is 1.05 to 1.50, and the elliptical yarn guide The speed of 0 to 500 m / min, the diameter of the elliptical yarn guide is 5 to 100 mm, characterized in that the manufacturing method of partially fused false twist yarn.
The method according to claim 1,
A method of manufacturing partially fused false twist yarn, characterized in that the greater the aspect ratio of the yarn guide, the lower the fusion rate.
Synthetic fiber having the shape and function of natural hemp produced using a method for producing partially fused false twisted yarn according to any one of claims 1 to 6.
The method of claim 7,
Adjusting the aspect ratio of the yarn guide synthetic fiber of the shape and function of the natural hemp.

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