KR820000930B1 - The method of preparing a textured yarn - Google Patents

Abstract

The textured yarn is made by passing the thermoplastic multifilament yarn through the first heater at Tg-m.p.-10≰C under the tension of 10-20mg/d and through the second heater at Tg-the first heater temp.-10≰C under the tensionless condition. When the yarn is passed through the first heater, fluid jet is accomplished to contact evenly in a short time.

Description

Method of Making Textured Yarns

,X₁-

)를 구하는 측정장치의 개략적인 측면도.1 is the characteristic value of the texture yarn (Rmax /

, X _1-

A schematic side view of a measuring device for

2 is a chart measured by the FIG. 1 apparatus.

3 is a chart measured by the FIG. 1 apparatus.

4 is a perspective view of a sample stand type measuring device for measuring the degree of bulkiness.

5 is a schematic diagram showing a method of measuring bulky ratio.

Figure 6 is a schematic side view showing the manufacturing method of the texture yarn of the present invention as an embodiment.

7 is a side view showing the thread contact of the heating pin without the vibration imparting device.

8 is a side view showing the thread contact of the heating pin with a vibration imparting device.

9a, b, and c are perspective views each showing a vibration imparting device used in the present invention.

The present invention relates to a method for producing textured yarns used in knitted fabrics.

In the method of manufacturing the textured yarn of the present invention, a substantially untwisted thermally viscous multifilament yarn is run on the first heating body under a tension of about 10-120 mg / d and subjected to vibration during drawing of the thread that approaches the heating body for a short time. A method in which thread is brought into contact with the heating body.

Due to the vibration, some yarns contact the first heating element before the other yarns, and each thread contacts the heating element in a short time, so that the yarns are almost uniformly heat treated without overheating or unheated stretching yarns. to provide.

In addition, the present invention includes a method of performing a fluid spray, such as air spray as a method for applying an effective vibration during the stretching of thread yarns approaching the first heating element.

In this vibrating method, it is appropriate to apply vibration during drawing of the thread that approaches the heating body on the side fed to the first heating body, and a better method is to pass the first heating body through the second heating body while the thread is substantially untensioned. There is a way to reduce the loops that form in the thread during the passage.

In this method, the temperature of the first heating body is appropriately between 10 ° C. or less than the melting point of the thread from the secondary potential point of the thread, and the temperature of the second heating body is less than the temperature of the first heater from the secondary potential point of the thread. Less than or equal to ℃ is suitable.

Actually untwisted yarn used in the present invention is obtained by drawing undrawn yarn or from a package of pre-oriented yarns or untwisted drawn yarns which are not related to the drawing ratio. The package cage is not suitable as a drum because the drum is suitable and the pirn is twisted because of the inclined part.

Thermo-viscosity multifilament yarns used in the present invention are polyamide-based, polyester-based, polyolefin-based and polyvinyl-based fibers molded from polyamide, with polyester fibers being particularly suitable.

The polyester system refers to a copolymer containing, for example, polyethylene ethylene terephthalate, poly ethylene oxybenzoate or at least 70% of repeating units thereof and the third component.

交絡 : Inter-laced)이 없는 멀티필라멘트사로서 다음과 같은 특성을 갖는다.Textured yarn produced by the present invention is substantially single yarn

交 絡: Multi-filament yarn without inter-laced) and has the following characteristics.

2.5A) Rmax /

2.5

1.5%, △S₅₀

30%B) △ S ₅

1.5%, △ S ₅₀

30%

1.3cc/g%C) Y

1.3 cc / g%

1.0gD) X _T-

1.0 g

Where Rmax: maximum tension fluctuation

: 평상부(平常部)의 평균적인 장력 변동폭

: Average tension fluctuation of the flat part

ΔS ₅ : Maximum shrinkage difference between angular filaments with respect to sample length 5 cm

ΔS ₅₀ : Maximum shrinkage difference between each filament for sample length 50cm

X _T : Maximum tension

: 평균장력

: Average tension

Y:

In the present invention, the fact that there is no single yarn intersection means that the cohering force of adjacent single filament yarns is a common yarn having a fluctuation of 20 T / m, as described in US Patent No. 2985995. Mean cohesion coefficient of adjacent thread, measured by hook-drop test), is less than 2.5cm ^-1 .

The characteristic values of the yarns are measured as follows.

와 X₁-

의 특성치를 구하는 측정장치에서 팩케이지(1)에서 풀려나온 사조(2)는 가이드(3)를 경유하여 장력조정장치(4)에 의해 1차 장력을 조정하고 보조로울러(S)와 마찰하는 3개의 로울러(5)(7)(9)를 통과 한다.Rmax / as shown in FIG.

With X _1-

The thread (2) released from the package (1) in the measuring device to obtain the characteristic value of 3 is adjusted by the tension adjusting device (4) via the guide (3) and friction with the auxiliary roller (S) 3 Two rollers (5), (7) and (9).

Here, the rollers 5 and 7 rotate at the same speed.

The yarns are run at a speed of 50 cm / sec by the rollers 9 between the two rollers 7 and 9 disposed at 15 cm intervals, and are stretched 7.5%.

The thread guided to the frictionless guide roller F installed between the two rollers 5 and 7 passes through the displacement roller 6 under gravity by the load 6 '. Maintain a tension of 0.3 g / d between

The thread tension is measured by a pickup 8 provided between both rollers 7 and 9, and this measurement is recorded on the chart at a speed of 6 cm / min.

Reference numeral 10 in the drawing denotes a winding roller.

은 전기한 15cm로 선정한 부분의 평상부를 폭 2cm, 길이 3cm로 일정하게 3개소를 선정하여 변화폭의 평균치를 산출한 평균변화폭이다.FIG. 2 is an example of the chart measured by the pickup 8 of the FIG. 1 apparatus, where Rmax is the maximum change width of a portion arbitrarily selected 15 cm from the chart marked as hunting,

Is the average change width that calculates the average value of the change width by selecting 3 places of 2cm in width and 3cm in length.

In general, as shown in FIG. 2, the more uniform the thread, the more uniform the tension change.

는 사조의 균일성을 표시하며, 그 값이 2.5이상인 멀티필라멘트사로 직조하면 강한선조(strong streak)나 염색얼룩이 생기므로 그 값이 적을수록 좋다.Rmax /

Indicates the uniformity of thread, and when weaved with multifilament yarn having a value of 2.5 or more, strong streak or staining occurs, so the smaller the value is, the better.

도 역시 제1도 장치의 픽업(8)에 의해 측정된 챠트에서 구할수 있으며 X_T는 챠트의 길이에 관계없이 주기적인 물결 모양으로 챠트에 표시된 난조부분의 최대장력(g)이며,

는 챠트에서 임의로 선정된 15cm 길이에서 평상부를 길이 3cm, 폭 2cm로 일정하게 3개소를 선정하여 산출한 평균장력(g)이다.X _T

FIG. 1 is also available from the chart measured by the pickup 8 of the FIG. 1 apparatus, where X _T is the maximum tension (g) of the hunting portion indicated on the chart in a periodic wave, regardless of the length of the chart.

Is the average tension (g) calculated by selecting three places of 3cm in length and 2cm in width from the 15cm length arbitrarily chosen from the chart.

는 사조의 주기적인 불균일성의 척도이며, 이 값은 0인 것이 바람직스럽지만

는 사조의 영계수(young modules)와 사조의 수축특성에 의해 결정되므로 본 발명에서 폴리에틸렌 테레프타레이트로서 본 발명의 벌키이성 가공사를 제조할 경우에는 1.4-2.1의

g/d 값을 취할 필요가 있다.XT-

Is a measure of the periodic nonuniformity of the yarn, which is preferably 0

Is determined by the Young's modulus of the yarn and the shrinkage characteristic of the yarn, so that when producing the bulky twisted yarn of the present invention as polyethylene terephthalate in the present invention, 1.4-2.1

You need to take the g / d value.

△ △ S ₅ and S ₅₀ are obtained by heating a sample of 5cm, 50cm long at 200 ℃ for 5 minutes each case the free shrinkage conditions.

Dry heat shrinkage is calculated as a percentage of shrinkage relative to the original length of the sample, ΔS ₅ is the difference between the maximum and minimum shrinkage of the 5cm sample, and ΔS ₅₀ is determined as the difference between the maximum and minimum shrinkage of the 50cm sample.

)의 타입(打入)에 심한 불균형을 초래하는 결점이 있다.It is preferable that ΔS ₅ is a large value and ΔS ₅₀ is a small value, but if ΔS ₅ is less than 1.5, it lacks bulkiness, and if ΔS ₅₀ is greater than 3.0, weft (緯

) Has a drawback that causes severe imbalance in the type.

The numerical value Y obtained at dry heat shrinkage (SH) and bulkiness ratio (M) is measured as follows.

The dry heat shrinkage ratio (SH) was measured using an 80 g sample filament yarn with a skein of 1 m perimeter and applying a load of 0.1 g / d to measure the initial length ℓ ₁ (cm). After the heat treatment was carried out by hanging in a state of no load for 5 minutes, and the load of 0.1g / d was applied again to obtain the length of the skein ℓ ₂ (cm) again dry shrinkage ratio (SH) can be obtained by the following equation.

SH (%) = (ℓ ₁ -ℓ ₂ ) / ℓ ₁ × 100

4 shows a simple device for measuring the bulkiness ratio M of the sample stand type, and two slits 16 are provided on the upper surface 11 of the stand at intervals of 6 mm.

A flexible foil 12 having a width of 2.5 cm is placed on the slit 16, a metal indicator system 13 and a weight 14 are attached to the lower end thereof, and the cloth 12 of the upper surface of the stand 11 is attached. The scale (15) of the indicator (13) shall be installed to indicate the zero position under the condition that the specimen is not mounted on the specimen.

The sample is wound by 80m long yarn and prepared into 1m circumference, and 2-10 skeins are prepared according to the indicated deniers.These skeins are each unloaded for 5 minutes in the atmosphere of 200 ℃ ± 2 ℃. After the heat treatment is carried out by hanging, the coils are arranged side by side so that the displayed fineness becomes 48000 denier.

(For example, 30 × 80 × 2 = 4,800, 48000 ÷ 4800 = 10 for 30 denier and thread, 10 threads, 4 threads for 75 × 80 × 2 = 12000, 48000 ÷ 12000 = 4 for 75 denier)

The skew thus arranged is folded into quarters as shown in FIG. 5A to form a sample 18, and this is formed between the foil 12 and the stand top surface 11 as shown in FIGS. 5A and 5C. Insert in

(cm)를 구한다.After adjusting the weight (14) and the guideline with guide (13) so that the total is 50g, measure the L (cm) value indicated by the guideline, move the position of the measurement sample 18 three times, and measure the average value.

Find (cm).

The bulkiness ratio (M) is calculated by the following equation.

M (cc / g) = foam volume (V) / proving quantity (W)

Where D: sample fineness before heat treatment (d)

P: Number of threads inserted parallel to the foil

으로 구해진다.And the value of Y is

Obtained by

If the value of Y is less than 1.3, yarns have a low bulkiness and a high shrinkage rate, resulting in paper or knitted fabrics.

, △S₅및 △S₅₀, Y값 그리고 X₁-

와의 사이에는 다음료 1-4에 표시된 바와 같은 관계가 있다.Properties of the fabric and yarn properties Rmax /

, ΔS ₅ and ΔS ₅₀ , Y values and X ₁ −

There is a relationship between and as shown in the following 1-4.

This table shows the results obtained by weaving 75 denier and 36 filament polyester textured yarns into a plain weave as a yarn obtained by a method different from the yarn obtained by the present invention.

In each table, the symbol ○ indicates a satisfactory product, the △ symbol shows a slightly difficult product, and the × symbol indicates a product having a difficulty.

[Table 1]

[Table 2]

[Table 3]

[Table 4]

The present invention will be described in more detail with reference to FIGS. 6 to 9 as follows.

6 is a side view of an apparatus for producing a textured yarn, in which the yarn 20 is drawn out of the undrawn yarn package 19 and between the feed roller 22 and the roller 24 via the guides 21 and 21 '. At normal stretching.

The supply roller 22 is preferably coated with rubber on its surface so that the thread can be stretched during feeding of the thread, and a drawing pin 23 is provided between the roller 22 and the roller 24.

Next, the thread 20 passes through the heating fin 26 installed between the roller 24 and the roller 27, and the roller 24 is faster than the rotational speed of the roller 27 so that the heating fin 26 is rotated. The tensile force of the thread passing through becomes small, and heat shrinkage stress is generated by the heating fins 26.

The tension of the thread passing through the heating fin 26 by the rotation speed of the roller 24 and the roller 27 and the temperature of the heating fin 26 becomes 10-120 mg / d uniform tension. .

At this time, the running speed of the thread is driven so that the heating by the heating pin 26 is not evenly conducted to the thread, and also actively vibrates the thread supplied to the heating pin 26 as the vibrator 25. .

The thread thread passing through the roller 27 is contacted with the heating plate 28 between the rollers 27 and the rollers 29 at the same speed, and then is wound on the winder 30.

Each roller (24) (27) (29) is used in addition to the auxiliary roller (S), respectively, and directly to the winder (30) without heating by the heating plate 28 for the thread passed through the roller (27) You may wind up.

의 값을 가진 양호한 텍스쳐사를 얻을 수 있으며, 연신사를 가열핀에 공급하여 드럼에 감는 경우에도 이와 유사한 결과를 얻을 수 있다.The present invention as described with reference to FIG. 6, because it is supplied to the heating pin after the undrawn yarn wound in the pack cage stretched almost to 0 _T X -

A good texture yarn with a value of can be obtained, and similar results can be obtained when the drawn yarn is fed to a heating pin and wound on a drum.

FIG. 3 is a chart measured by the pick-up 8 of the first drawing device, in which yarns obtained by feeding a drawing yarn wound on a furn having a slanted portion and a straight portion to a heating pin are irregular portions t and regular portions p Before each heat treatment, the tension change of yarns wound on the inclined and straight parts of the funnel is shown.

의 값이 만족스럽지 못하지만 본 발명에 의해 드럼에 감겨진 연신사를 시험하면 규칙적인 부분 p만 생기므로 만족스럽게 된다.In this way, the wound wound on the parent X _T-

Although the value of is not satisfactory, when the drawn yarn wound on the drum is tested by the present invention, only a regular portion p is generated, which is satisfactory.

에 아무런 영향을 주지 않는다.The part t 'of FIG. 3 also shows an irregular change in tension of yarns wound on the inclined part of the furn after being heat treated with a heating pin, but this is opposite to that wound before the heat treatment. Because characteristic X _T-

Does not affect anything.

道를 통과하는 사조(20)가 가열핀(26)의 표면과 최초로 자연히 접촉되는 점을 가상접점(a)이라 하면 일반적으로 꼬여진 필라멘트사를 가열핀에 공급하면 제7도의 표시와 같이 사조는 가상접점(a)에서 가열체 표면에 접촉되고 이점(a) 근처에서 가열체로부터 받는 열량에 따라 열처리된 필라멘트사(b)는 가열체 표면을 타고 통과하지만 필라멘트사(c)는 가열체 표면에 접촉되지 않으므로 열처리되지 않기 때문에 단사(單

)의 길이방향으로 보면 열처리된 부분과 열처리되지 않은 부분이 생겨서 난조를 이루므로 가열체를 통과한 사조는 꼬여져서 결과적으로 공급사나 방적물에 영향을 주게 된다.7 and 8 are side views illustrating the state of thread on the heating fins.

When the thread 20 passing through the path is naturally brought into contact with the surface of the heating fin 26 for the first time, the virtual contact point (a), when the twisted filament yarn is generally supplied to the heating fin, the thread is as shown in FIG. The filament yarn (b) is brought into contact with the heating element surface at the virtual contact point (a) and heat-treated according to the amount of heat received from the heating element near this point (a), but the filament yarn (c) passes through the heating element surface. Because it is not contacted, it is not heat treated, so

In the longitudinal direction of), heat treated and unheated parts form hunting, and the thread passed through the heating body is twisted, which in turn affects the supplier or the spinning material.

의 값이 3-4.5에 달하는 사조)밖에 얻을 수가 없다.Since this is different from the process of the present invention, single yarns having desired characteristics are not obtained. In particular, in the case of multifilament yarn in which the thread fed to the heating body without vibration is substantially twisted, the pitch between the heat treatment portion and the non-heat treatment portion is increased for each single yarn (characteristic value Rmax /

Can only be obtained with the value of 3-4.5.

However, according to the present invention, for example, since the filament yarn is substantially twisted and supplied to the heating fin 26, the single yarn is not only contacted at the virtual contact point a but is reared by the vibration as shown in FIG. Or in front of it.

Therefore, a substantially uniform heat treatment effect can be observed for each single yarn, and the yarns having excellent uniformity can be produced by adjusting the heat treatment heat treatment by the heating body. As the vibration imparting device 25, for example, the fluid is injected into the electric vibration difference (Fig. 9a), the rotary blade (Fig. 9b), or the pores 34 of the fluid ejection device 33 to stick and push the thread 20. (Fig. 9c) or other suitable device may be used.

If the thread tension when applying vibration is too high, it is difficult to impart vibration. On the contrary, if the thread tension is too low, it is easy to cause cutting, etc., so that the thread tension of the part where the thread passes through the heating body is 10-120 mg / d. It is also possible to use two or more vibration imparting devices in order to adjust the range and to effectively vibrate.

Although the temperature of the heating fin 26 is implemented in the range of melting | fusing point at the secondary potential point of thread | thread thread, Preferably it is the range which does not exceed 10 degreeC below melting | fusing point at the secondary potential point of thread | thread thread.

If the temperature is too close to the melting point of the thread, the thread may melt and break. On the contrary, the desired thread cannot be obtained at a temperature below the secondary potential point. In addition, the temperature of the heating plate 28 may be set to an appropriate temperature such that the loops generated in the previous step are eliminated and latent.

For example, the range which does not exceed 25 degrees C or less than the temperature of the heating fin 26 at the secondary potential point of thread | thread thread is preferable.

If a temperature lower than the temperature of the heating fins 26 is not employed, the desired bulkiness is not obtained.

In the process of erasing the loop, if the method of eliminating the loop by winding up the tension enough to erase the loop without using the heating plate 28 is adopted, only bulky properties and a large shrinkage ratio are obtained.

The textured yarn obtained by the method of the present invention is a yarn with a potential bulky yarn such as plain yarn or a so-called loose loop, and has uniform, sufficient bulkiness and low shrinkage as yarn.

Therefore, the knitted fabric woven with yarn in accordance with the present invention has a good texture and does not cause staining and dyeing.

Hereinafter, the present invention will be described as examples.

Example 1

The apparatus shown in Fig. 6 stretches undrawn yarn of 262d / 36F polyetchene terephthalate (triangular cross-section) 3.5 times at a speed of 360 m / min, thereby producing a 75 denier yarn roller (24, 27). Over fed 10% between.

As shown in FIG. 9C, the vibration imparting device 25 by air injection arranges nine pores having a diameter of 0.5 mm at intervals of 3 mm, and injects air into the thread at 0.8 kg / cm 2 of air pressure to vibrate the thread while vibrating the thread. The heat treatment was performed by supplying a heating fin having a 35 mm temperature of 215 ° C.

At this time, the feed tension of the thread between the rollers (24) (27) was about 2.5g (33mg / d) the length of contact with the heating fins was about 5.1cm).

Next, the winder is removed between the roller 27 and the roller 29 (rotated at the same speed as the roller 27) by contacting a 25 cm long flat heating plate 28 heated to 135 ° C. to remove the loop. It was rolled up to 30 (sample 1).

Except not using the heating plate 28, it wound up on the same conditions as the sample 1, and obtained the thread with a loop (sample 2).

The characteristics of Sample 1 and Sample 2 are as follows.

These yarns had excellent bulkyness and low shrinkage, and after weaving plain weaves into these yarns to perform ordinary refining, dry heat treatment was performed at 180 ° C. for 30 seconds, followed by dyeing.

The characteristics of each fabric are as follows.

(Fabric by sample 1)

The fabric is thick and has a very short mite-like speckled pattern. The gloss is soft and has a rough texture. It has excellent color brightness and saturation.

(Fabric by sample 2)

Compared with the sample (1), the thickness of the fabric is excellent, and the short-circle uneven spots are weak and few.

The gloss or touch is the same as the sample (1), and the color saturation and lightness are slightly lower than the sample (1) but are almost indistinguishable.

Example 2

The apparatus shown in FIG. 6 was stretched 3.4 times at 239 d / 24F polyamide unstretched yarn at a speed of 400 m / min, and the 75 denier yarn was oversupplied by 7% between the rollers 24 and 27. Sample 3 is obtained by passing through a heating fin having a diameter of 60 mm and a temperature of 200 ° C. while vibrating in the same manner as in 1.

At this time, the tension of thread thread between the rollers 24 and 27 is about 2g (29mg / d) and the length of contact with the heating fin is 6.3cm.

The characteristics of sample 3 are as follows.

M was measured using 5 skeins.

The plain fabric woven with thread of sample 3 is heat-set at 170 ° C. for 30 seconds to complete dyeing.

(Fabric by sample 3)

The thickness of the fabric is thin, the ancestors are very small, the gentle luster and the slightly soft feeling are felt, and the color saturation and brightness are excellent.

Example 3

Experiment (1)

Under the same conditions as the method of manufacturing the sample 1 of Example 1, the tension of yarn thread was changed by changing the over-feed rate between the rollers 24 and 27 in various manners. Was obtained.

Experiment (2)

By drawing the apparatus shown in Fig. 6, the undrawn yarn of 105D / 12F polyetchene terephthalate (triangular cross-section) was stretched 3.5 times at a speed of 436 m / min to produce a 30 denier yarn roller (24) (27). ) At various rates of oversupply.

The vibration imparting device was the same as in Example 1, but the air pressure was 0.6kg / cm 3, and the thread thread was supplied to the heating fin 26 having a diameter of 35 mm and a temperature of 215 ° C. with various thread feeding tensions, and thus 5.1 cm length contacted. It became.

After contacting the flat heating plate 28 having a length of 25 cm heated at 130 ° C. between the rollers 27 and 29 rotating at the same speed to each other, the loop is erased, and then wound up as a winder 30 to prepare the sample 6 and ( 7) was obtained.

The characteristics and the stability of use of the sample thread by the experiment (1) and (2) also show that the Y value decreases when the thread tension is significant as shown in Table 5.

Obviously as the tension increases, the value of Y decreases but the lowest limit of Y is 1.3, so the tension can be changed to approximately 120 mg / d depending on the nature of the thread.

[Table 5]

The use stability of these samples is satisfactory because they are not broken in use, but it can be seen that the breakage degree of yarn increases as the tension decreases. When the tension is below 10 mg / d, the operation stability becomes unstable.

Example 4

Sample 8-12 was obtained by the same method as the sample 1 of Example 1 except having changed the temperature of the heating plate 28. As shown in FIG.

These characteristics are the same as in the sixth table, and it can be seen that Y decreases as the temperature difference between the heating fin 26 and the heating plate 28 decreases, and although not shown in the table, if the temperature difference decreases below 25 ° C, It is clear that the value of Y falls below the minimum of 1.3.

[Table 6]

Claims (1)

Substantially twisted multi-filament yarns are passed through the first heating element at a temperature of 10 ° C. or lower than the melting point of the thread at the secondary potential point of the thread with a tension of 10-120 mg / d, and the thread passes through the heating body. In order to make uniform contact within a short time, fluid is injected from the feeding side of the first heating element to vibrate, and the yarn is tensioned to the second heating element which is 25 ° C or less than the temperature of the first heating element at the secondary potential point of the thread. The manufacturing method of the texture company characterized by running as a non-state.

Images