JP2530721B2 - Mixed fiber entangled yarn - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mixed entangled yarn of two or more kinds of filaments having different single fiber fineness and heat shrinkage.

The mixed entangled entangled yarn of the present invention is made into a knitted fabric, a woven fabric, a braid, etc., and is optimally used for high-grade clothing applications, high-grade decoration applications, etc. by taking advantage of its characteristics.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, Japanese Patent Publication No. 35-6684, Japanese Patent Publication No. 35-13168, and the like have been known as methods for giving loops or confounding to a multifilament. This method is called so-called Taslan processing that uses airflow, and it produces spun yarn-like appearance and texture by generating innumerable protruding loops and slack on the surface of the entangled yarn. Innumerable protruding loops and slacks are long and many, so unwindability from the wound layer of the processed yarn is poor, unwinding tension unevenness is generated, and not only the workability during knitting and weaving is significantly inferior, but also the knitted fabric. However, there is a drawback that the surface quality of is extremely deteriorated. In terms of texture, when subjected to heat treatment in the dyeing and finishing process, all filaments shrink uniformly, reducing the dispersibility between the filaments given in the yarn processing, resulting in a so-called cored texture. there were.

Further, Japanese Patent Publication No. 62-60485 and Japanese Patent Publication No. 58-31415 propose methods for shortening and reducing loops and slack on the surface of the entangled yarn. In particular, Japanese Examined Patent Publication No. 58-31415 discloses a combination of filaments having different heat shrinkage rates and single fiber fineness. However, in these inventions, the unwindability from the wound layer of the processed yarn is improved as compared with the Taslan processing, but when the range of the single fiber fineness targeted by the present invention is reached, particularly high fineness The filament loop was projected on the yarn surface, and the unwinding failure and the defects resulting therefrom were not improved. Further, the difference in heat shrinkage ratio between single fibers was also outside the range of the present invention, and was in a range different from the bulge targeted by the present invention.

In any of the above-mentioned conventional techniques, it is difficult to simultaneously obtain good handleability of the processed yarn such as unwinding property and outstanding texture effect with the mixed entangled yarn of the filament yarn.

In view of the above-mentioned points, the present inventors can solve a number of drawbacks and lack of features of the conventional mixed and entangled filament yarn, and can exhibit a distinctive texture effect. The present invention has been achieved as a result of extensive studies on the yarn.

That is, it is an object of the present invention to provide a novel mixed entangled yarn of filament yarn which has good handling property such as unwinding property from the processed yarn winding layer of the mixed entangled yarn and can exhibit a remarkable texture effect. To do.

[Means for Solving the Problems] In order to achieve the above object, the mixed fiber entangled yarn of the present invention has the following configuration.

That is, a mixed entangled yarn of two or more kinds of filaments having different dry heat shrinkage, which has a high dry heat shrinkage (hereinafter,
The low shrinkage filament) has a single fiber fineness of 3.5 to 6.0 denier, and the filament having a low dry heat shrinkage (hereinafter, low shrinkage filament) has a multilobe cross section of three or more leaves, and the single fiber fineness of the filament is 0.4 to Within the range of 2.0 denier, the boiling water shrinkage rate is 10-18%, the dry heat yarn length difference ratio of the mixed entangled yarn after dry heat treatment at 170 ° C for 5 minutes under 2 mg / d load is 15% or more and below. The number of loops above the imaginary yarn surface D (hereinafter referred to as the number of D loops) is 150 to 250 pieces / m, and the loop having a height of 0.35 mm or more from the imaginary yarn surface A defined below (hereinafter referred to as the A loop number) 5
It is a mixed fiber entangled yarn having a number of pieces / m or less and a CF value of 50 or more.

The number of D loops, the number of A loops, and the virtual yarn surface D and the virtual yarn surface A from which these are measured are determined as follows.

Toray Engineering Co., Ltd. FRAY COUNTER (DT-104
Type), the yarn speed is 25 m / min, the running part tension in the measuring section is 1.0 g / d when measuring the number of D loops, 0.1 g / d when measuring the number of A loops, and the loop between 25 m Is measured, the number of loops per 1 m is determined, and it is represented by the average value of 3 points. In this case, the number of loops above the virtual yarn surface D of the processed yarn is the D loop number, and the number of loops having a height of 0.35 mm or more from the virtual yarn surface A of the processed yarn is the A loop number.

Here, the virtual yarn surface D of the processed yarn is set to a height that indicates the maximum number of loops when the number of loops is measured in advance by changing the height from the yarn surface under the tension condition for measuring the number of D loops.

Further, the virtual yarn surface A of the processed yarn is set to a height that indicates the maximum number of loops when the number of loops is measured in advance by changing the height from the yarn surface under the tension condition for measuring the number of A loops.

[Operation] Hereinafter, the mixed fiber entangled yarn of the present invention will be described with reference to the drawings.

FIG. 1A and FIG. 1B are schematic views of a yarn side surface showing a model of an example of the mixed fiber entangled yarn of the present invention.

FIG. 1A shows that the high shrinkage filament 1 and the low shrinkage filament 2 are entangled while being mixed with each other in the yarn cross-section direction,
The state where a minute loop is partially formed is shown.

In addition, FIG. 1B shows that the processed yarn of A is, for example, a knitted fabric, and is shrunk by wet heat or dry heat during refining or dyeing, so that the shrunk filament 1'has contracted and the shrunk filament 2'has contracted. Shows the structure of.

As can be seen from the figure, the action of the high-shrinkage filament and the low-shrinkage filament constituting the mixed fiber entangled yarn is necessary for the high-shrinkage filament to give the texture of the yarn or the knitted fabric, in particular, the outstanding tension and waist, Single fiber fineness of 3.5 denier or more and 6 denier or less, preferably 4.5 denier or more 6
It is less than or equal to denier. In the fineness range of this high shrinkage filament, when it is arranged in parallel to the length direction of the yarn like the conventional heat shrinkage difference mixed yarn, rather than tension and waist,
It has a hard, cored texture and is generally disliked,
In the present invention, for example, as in 1'of FIG. 1B, even if highly shrunk, it has an apparent three-dimensional crimp and exerts a spring-like action on the bending of the knitted fabric, thereby providing a preferable texture. To give.

If the monofilament fineness of the high-shrinkage filament is lower than 3.5 denier, the desired tension / waist is insufficient. There is a difference in gloss and brightness after dyeing, which causes unevenness, which is not preferable.

In addition, the low shrinkage filament is necessary for giving a very soft surface touch while the yarn or knitted fabric has outstanding tension and waist, and the single fiber fineness is 0.4 denier or more and 2.0 denier or less, preferably, 0.6 denier or more 1.25
It is less than or equal to denier.

When the monofilament fineness of the low shrinkage filament is less than 0.4 denier, it is difficult to obtain the desired color, especially the bathochromic effect when dyed with yarn or knitted fabric, and when it is higher than 2.0 denier, it is difficult to obtain a distinctly soft surface touch. Is not preferable.

The mixed fiber entangled yarn of the present invention exerts a swelling effect on a knitted fabric or a woven fabric, and facilitates the design or dyeing process of the knitted fabric or the woven fabric, and at the same time exhibits the outstanding swelling of the present invention, a boiling water shrinkage ratio. Is 10-18%.

Furthermore, the mixed fiber entangled yarn of the present invention gives a distinctive effect to the texture of yarns and knitted fabrics, especially to the bulge due to the shrinkage difference between the high shrinkage filament and the low shrinkage filament, and at the same time,
A low shrinkage filament has a lower heat shrinkage rate than a high shrinkage filament in order to provide a firm, elastic and soft surface touch.

In addition, this shrinkage difference is 15% or more in the dry heat yarn length difference rate after dry heat treatment at 170 ° C for 5 minutes under a 2 mg / d load of the mixed entangled yarn, considering the processing conditions of the knitted fabric and the yarn characteristics. Is. From the same viewpoint, under high load of 2mg / d, 170 ° C, 5 ° C
The dry heat shrinkage ratio after the heat treatment for partial drying is preferably 19% or more.

Here, the boiling water shrinkage ratio and the dry heat yarn length difference ratio are those determined as follows.

<Boiled water shrinkage of mixed fiber entangled yarn> Take a roll of 10 times with a measuring instrument with a frame circumference of 1 m and apply a load of 1/10 g (0.1 g / d) of the fineness of the processed yarn in advance. After reading (l ₀ ), wrap the ridge in a case and place it in boiling water for 30
Process for minutes.

The treated load is applied to the above-mentioned load and the length (l ₁ ) after contraction is read and calculated by the following formula, and the contraction rate is calculated by an average value of 5 times.

<Dry heat yarn length difference rate> Carefully construct mixed fiber entangled yarn with disassembling needle in advance.
Disassemble into one piece and measure the fineness of each single fiber using Denicom manufactured by Asahi Kosei Co., Ltd. 0.1 g for each individual filament
After applying a load of / d and marking the length of 10 cm, 2 mg /
d) Apply a load and treat in a hot air dryer at 170 ° C for 5 minutes. By applying a load of 0.1 g / d to each treated single fiber and reading the length (cm) after shrinkage, it is classified into a high shrinkage fiber group, a low shrinkage fiber group and other medium shrinkage group depending on the combination. The dry heat shrinkage rate (HS) of the high shrinkage filaments, the dry heat shrinkage rate (LS) of the low shrinkage filaments, and the dry heat yarn length difference rate are calculated by an equation.

FIG. 2 is a model view of the side surface of the entangled yarn obtained by the conventional Taslan method. There are countless long loops on the surface of the entangled yarn, and the unwindability from the textured wound layer is poor, As described above, not only the unwinding tension unevenness is caused, but not only the workability at the time of knitting and weaving is significantly deteriorated, but also the surface quality of the knitted fabric is extremely lowered. In the present invention,
As a structure of a textured yarn which eliminates these defects and at the same time does not cause the above defects even if it has a surface loop of a highly shrinkable filament, the number of D loops, which is a standard for the number of small loops, is 250.
The number of A loops, which is a rough loop guide, is 5 / m or less per m / m
The following is desirable.

Further, the mixed fiber entangled yarn of the present invention has an apparent three-dimensional crimp as shown in 1'of FIG.
It is an element that gives a favorable texture by giving a spring-like effect to the bending of a knitted fabric, and is also a measure of the degree of bending of single fibers.
The number of loops is 150 / m or more, and the CF value is 50 or more.

 Here, the CF value is obtained as follows.

<CF value> As shown in Fig. 4, hang the sample thread on the grooved pulley that can rotate left and right around the central axis without resistance, and
Apply loads N ₁ and N ₂ to the points.

N ₁ and N ₂ are 0.4 times the average fineness of the sample yarn.

Then, a fixed needle N having an outer diameter of 0.6 mm is pierced and fixed substantially in the middle of the constituent filament bundle of the sample yarn at a substantially right angle. The load N ₁ applied to the left side of the sample yarn is further applied with a load N ₃ of 0.1 times the average fineness of the sample yarn, and the sample yarn is moved to the left side and moved to the left side until it stops. Next, remove the load N ₃ applied to the load N ₁ , apply it in addition to the load N ₂ on the right side, and move the sample yarn to the right side by the load N ₃ and move it to the right side until it stops. The moving distance L (mm) of the sample yarn to the right side is obtained by the above method, and the CF value is calculated by the following formula. It is measured for 20 pieces and displayed as the average value.

5A and 5B are model views of a preferable cross section of the filament used in the present invention.

The textured yarn of the present invention, as described above, exhibits a distinctive bulge when the monofilament in the textured yarn is bent with respect to the yarn axis and is dyed into a knitted woven fabric. The trilobal cross section is preferable because it tends to be less and the high-class feeling is diminished, and the gloss is easy to appear.

More preferably, as shown in FIG. 5A, a composite fiber composed of a two-component polymer of A and B having different alkali weight loss rates,
The component A is a polymer having a higher alkaline weight loss rate than the component B, and the cross-sectional shape is a multi-lobed shape with three or more leaves,
A fiber in which the component A is compounded at the tip of each leaf in the direction of the center of the cross-section in the shape of an arrow, and this processed yarn is used as a knitted fabric to dissolve a part or all of the component A. As described above, by providing a tapered arrow-shaped groove toward the inside of the fiber, it has the effect of giving a silky silky sound and a silky surface touch, further improving the texture, and making it a desirable direction.

As a polymer that can easily achieve the above contents of the present invention, a polyester fiber containing ethylene terephthalate as a main component is desirable.

[Examples] Hereinafter, the mixed fiber entangled yarn of the present invention will be described in more detail based on Examples.

Example 1 After performing an esterification reaction using terephthalic acid / ethylene glycol and isophthalic acid / ethylene glycol slurries, 2,2-bis {4- (2-hydroxyethoxy) phenyl} propane (hereinafter, BHPP) Ethylene glycol solution was added and the polymerization was carried out by the usual method. The molar fraction of isophthalic acid was 9.2% and the molar fraction of BHPP was 4.3.
% Highly shrinkable copolymer polyethylene terephthalate chips were obtained.

Using this chip and a low-shrinkage polyethylene terephthalate chip obtained by an ordinary method, the fibers were separately spun at a spinning speed of 1450 m / min, and the yarn of the present invention was obtained by a draw-mixing and entanglement machine as shown in FIG. It was In this case, the undrawn yarn 3
Uses two drums of both components, the air turbulence nozzle 9 has an air pressure of 3.2 to 5.5 kg / cm ² , a surface speed of 394 m / min, and a relaxation rate (overfeed rate) between the stretching roller 7 and the relaxing roller 10. ): 2.7 to 9.2%, the temperature of the heating element 11: The conditions were changed in the range of room temperature to 180 ° C to obtain 19 levels of textured yarn shown in Table 1.

Here, the level No. 2,3,4,7,8,9,12,13,15,16,18 is an example of the present invention, the level No. 1,5,6,10,11,14,17 , 19 are comparative examples.

The high shrinkage component is a round cross-section yarn, the low shrinkage component is a triangular cross-section yarn, and the draw yarn that is drawn between the supply roller 5 and the draw roller in FIG.
Both high shrinkage filament yarn and low shrinkage filament yarn were set to 30 denier.

These 19 levels of processed yarn are made 50 with a down twister.
It is used as a warp thread by multiplying 0 T / m S twist, and the weft thread is a normal thread.
A 100-denier 96-filament polyester yarn was sewn with S and Z twists of 2300 T / m and used alternately to make a plain weave with 168 vertical woven fabrics / in and 82 horizontal / in horizontal. As is clear from Table 1, when the number of D loops of the processed yarn exceeds 250 / m or the number of A loops exceeds 5 / m, the loops on the surface of the processed yarn are entangled during twisting with the down twister. The unwinding property was poor, and many thread breaks occurred. Further, at this level, warp yarn opening failure occurred during weaving, and weavability was also poor.

In addition, refining / intermediate set using ordinary polyester fabric dyeing process, including these poor weaving levels,
Alkali weight reduction processing, aubergine navy blue plain dyeing, vertical 198-201 pieces / in, horizontal 115 depending on the shrinkage characteristics of each level
Finished to ~ 119 threads / in. Table 1 shows the comprehensive evaluation results including the texture of these dyed fabrics and the weavability of each level. As is clear from Table 1, the mixed entangled yarn of the present invention had good weaving properties and exhibited a distinctive texture effect.

(Example 2) Chips of highly shrinkable copolymerized polyethylene terephthalate obtained in the same manner as in Example 1 were used for the B component of the trilobal cross section as shown in FIG. No. 5 of shrinkable polyethylene terephthalate chips
It is used as the B component of the spinneret for spinning filaments having a trilobal cross section as shown in FIG. A and having a fineness lower than that of the high shrinkage component,
Furthermore, as the component A of the two-component filament,
Three-component composite spinning was carried out using a polymer prepared by blending 25% by weight of polyethylene terephthalate copolymerized with 5 mol% of sodium sulfoisophthalate and 75% by weight of ordinary polyethylene terephthalate. The composite ratio of the A component and the B component was A: B = 15: 85 for both the high shrinkage filament and the low shrinkage filament, and the spinning speed was 1400 m / min.

The obtained composite unstretched yarn 3 is fed to the feeding roller 5 by using a stretching and interlacing machine as shown in FIG.
The film was stretched once with the stretching roller 7.

The drawn yarn obtained by separating the mixed filament yarn after drawing into a high shrinkage component yarn and a low shrinkage component yarn had a high shrinkage component yarn of 32 denier and 9 filaments, and a low shrinkage component yarn of 43 denier and 24 filaments.

This drawn mixed filament yarn is continuously entangled by the fluid turbulent nozzle 9, heat-treated by the heating body 11 to shorten loops and slack on the yarn surface, and wound on the winding device 13 to form the mixed filament entangled yarn. Obtained.
The yarn processing conditions were the same as those of level No. 3 of the example. The obtained processed yarn has a high shrinkage yarn dry heat shrinkage ratio of 24.7%, a dry heat yarn length difference ratio of 18.9%, an entangled yarn boiling water shrinkage ratio of 12.9%, and a D loop number of 19
The number was 8 / m, the number of A loops was 0 / m, and the CF value was 111.

This processed yarn is one warp yarn in the S direction 900T / m, and two weft yarns are aligned with each other and twisted in the S direction 900T / m with a down twister. The vegetative density is 168 warp / in, 72 warp / in Woven in cashmere tissue. The twistability and weavability were good.

This greige was refined, dyed in the middle set, and alkali-reduced using the usual dyeing method for polyester fabrics to make it a plain dyed brown. Alkali weight loss treatment was 25% and the finishing density was 215 warp / in and 108 weft / in.

The resulting woven fabric has outstanding bulges, waist, tension and softness as intended, and does not show dyeing irritability.The surface touch has a dry feeling and has a very novel texture that feels like silk. It was a good fabric.

[Effects of the Invention] The present invention is an entangled yarn having loops and slack on the yarn surface, but by setting the loop state of the yarn surface within a specific range, the unwindability from the processed yarn winding layer and the weaving property during weaving can be improved. We provide mixed fiber entangled yarns that have good handling properties during weaving, such as openability.
By setting the fineness range and the heat shrinkage rate and the yarn length difference rate of each single fiber constituting the mixed fiber entangled yarn to a specific range, and controlling the bending degree of the single fiber due to the entanglement, a distinctive bulge, waist, tension, It is intended to provide a mixed fiber entangled yarn for obtaining a knitted woven fabric having a new soft feel.

[Brief description of drawings]

FIG. 1A and FIG. 1B are schematic side views of a yarn showing a model structure of an example of the mixed entangled entangled yarn of the present invention, and FIG. 2 is a model diagram of a conventional fluid turbulence treated yarn structure. 3 is a schematic view of the yarn side surface shown. FIG. 3 is a process schematic view for explaining an embodiment of a process for producing the mixed fiber entangled yarn of the present invention, and FIG. 4 is a schematic view of the entanglement degree measuring device showing the mixed fiber entanglement degree of the present invention.
5A and 5B are model diagrams of a more preferable single fiber cross section of the yarn of the present invention. In the figure, 1,1 ': High shrink filament 2,2': Low shrink filament 3: Unstretched yarn 4: Guide 5: Supply roller 6: Stretching pin 7: Stretching roller 8: Guide 9: Fluid turbulent nozzle 10: Roller 11: Heated body 12: Take-out roller 13: Take-up device N: Fixed needle N ₁ , N ₂ , N ₃ : Load A: Easy soluble component B: Hardly soluble component

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location D01F 6/84 301 D01F 6/84 301J 305 305C 8/14 8/14 B D02G 3/04 D02G 3/04 D02J 1/00 D02J 1/00 KR D06M 11/38 D06M 5/02 G

Claims (2)

(57) [Claims] 1. A mixed entangled yarn of two or more kinds of filaments having different dry heat shrinkages, wherein filaments having a high dry heat shrinkage have a single fiber fineness of 3.5 to 6.0 denier and a low dry heat shrinkage. Having a multi-lobed cross section of three or more leaves, the filament fineness of the filament is in the range of 0.4 to 2.0 denier,
Shrinkage rate of boiling water is 10-18%, dry heat yarn length difference ratio of mixed fiber entangled yarn after dry heat treatment at 170 ° C for 5 minutes under 2 mg / d load is 15% or more, virtual yarn surface D defined in the text. 150-250 loops above
A mixed fiber entangled yarn characterized by having 5 loops / m or less from the imaginary yarn surface A defined in the text of 0.35 mm or more and having a CF value of 50 or more. 2. A filament having a low dry heat shrinkage ratio is a composite fiber composed of a two-component polymer having different alkali weight loss rates, and the component polymer having a high alkali weight loss rate is directed toward the center of the cross section at the tip of at least one leaf. The mixed fiber entangled yarn according to claim 1, which is arranged in a tapered arrow shape.