JPH11189940A - Production of bouclelike spun composite yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a Bouclelike spun composite yarn by which the yarn is prevented from elongating with a spun single yarn without carrying out the two ply yarn processing that has hitherto been required, the shape of Boucle state is retained and a fabric having a lower metric count than the present metric count 1/26 by >=40% can be produced by using the single yarn. SOLUTION: Feed yarns B and C of the feed yarns A, B and C are fed from back rollers 3 while keeping the interval between both at 4-8 mm by a worsted spinning frame and the feed yarn A is spun from an apron 4 and front rollers 7 to provide a composite spun yarn having (1/15) to (1/26) metric count containing the feed yarn A as a core and the feed yarns B and C as a sheath, which is then subjected to steaming treatment, hot-water treatment or a dyeing treatment thereof in a hank state to develop a Boucle shape. The feed yarn A is a worsted spun single yarn comprising >=60% acrylic raw fiber having >=35% shrinkage percentage and the feed yarn B is a roving composed of a staple fiber having 2-4.5 denier and 64-160 mm cut length and comprising >=60% acrylic raw fiber having >=35% shrinkage percentage. The feed yarn C is a roving composed of a nonshrinkable fiber or a shrinkable fiber having >=4% shrinkage percentage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention combines a fiber material having a shrinkage ratio of 35% or more with a non-shrinkable fiber material to form a heat-treated yarn, which shrinks during steaming, hot water treatment or heat dyeing. The thread creates a myriad of loop-shaped raised shapes on the surface of the yarn due to the difference.The yarn shape becomes a Bouclay-style fan chain, and a spun yarn is inserted as a core yarn between the heather yarns. It is intended to stabilize and maintain the shape by spinning and layering at the same time. Single yarn can be used, and it can be widely used in the field of knitting such as knit, setter and jersey. It has a use, especially as a jersey-like product by simple knitting.

[0002]

2. Description of the Related Art In a conventional method for producing a Bouquet-like spun composite yarn by using a spun yarn, the yarn is stretched by winding tension after a dyeing step, etc., even if a Bouquet state is formed, and the shape stability is reduced. Since it could not be obtained only by using a single yarn, it was necessary to perform twin yarn processing to stabilize and maintain the shape. Therefore, in the conventional method, the fabric count is 2 /
The count smaller than 36 (single yarn equivalent count Nm1 / 18) was difficult to manufacture.

[0003]

SUMMARY OF THE INVENTION According to the present invention, in order to produce a Bouquet-cress spun composite yarn, the elongation of the yarn can be reduced without using the conventionally required twin yarn processing, even if a spun single yarn is used. The purpose of the present invention is to make it possible to produce a fabric with a fine count of 40% or more, for example, a fabric count of 1/26, by using a single yarn. Is what you do.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention firstly discloses that the supply yarn A has an acrylic raw cotton 60 having a shrinkage of 35% or more, preferably 35 to 50%.
%, Preferably 80% or more, a worsted single yarn having a meter count (Nm) of 1/50 to 1/70, and the supply yarn B is 2.0 to 4.5 denier. Acrylic raw cotton 60% with a staple with a bias cut length of 64 to 140 mm and a shrinkage of 35% or more, preferably 35 to 50%
Or more, preferably a roving composed of 80% or more,
The supply yarn C is a roving yarn composed of non-shrinkable fibers or shrinkage fibers having a shrinkage ratio of 4% or less, and supply yarns A, B, and C (hereinafter, A and B).
B and C) are supplied by a worsted spinning machine at a distance between B and C from a back roller, preferably at a distance of 4 to 8 mm. , A is supplied to the center between B and C at a position between the apron and the front roller and controlled under a tension of 15 to 50 g,
By simultaneously spinning A, B, and C from the front roller, the composite yarn obtained by using A as a core yarn and B and C as sheath yarns has a metal count of 1/15 to 1/26. In the range, and twist coefficient (α) = 50-80 weight ratio A: 20-40%, B: 20-35%, C:
A method for producing a spun composite yarn having a layer structure, which is 60 to 25%. The second feature is that the spun composite yarn having the layer structure obtained in the first process is subjected to a steaming treatment, a hot water treatment, or a heating dyeing treatment in a skein shape, whereby a Boucle shape is developed. 3. A method for producing a Bouquet-crested spun composite yarn having a layer structure according to the first aspect. Third,
The component C and the components A and B are composed of components different from each other. By selecting a dye, C, A, and B are dyed in different colors, and the surface shape has a remarkable color change.
The above-mentioned first item, characterized in that a crevice spun composite yarn is obtained.
Alternatively, the present invention relates to a method for producing a Bouquet-like spun composite yarn having a layer structure according to the second aspect.

According to the present invention, when shrinking occurs during a treatment such as dyeing, the roving yarn C is inserted between the worsted single yarn A and the roving yarn B so that the loop always maintains a stable state.
Since the yarn does not move even after squeezing and the elongation of the yarn after the rewinding step after dyeing is prevented, it is possible to use single yarn.

According to the research results of the present inventors, as described above, A and B have a shrinkage ratio of 35% or more, preferably 5% or more.
0%, 60% or more, preferably 80%
% Of worsted single yarn A or roving B. If the acrylic raw cotton is less than 60%, the properties of the acrylic fiber are insufficiently exhibited, so that it cannot be used in the present invention. 2.0 to 4.5 as B
When a staple having a denier thickness is used, the cut must be a bias cut staple, and the cut length is not limited in the present invention, but the cut length of a normal staple is used. Of about 64-140 mm is preferred.
Also, the distance between B and C supplied from the back roller of the worsted spinning machine is preferably 4 to 8 mm, and by taking such a distance between B and C, B and C are mixed. Can be prevented. A is apron and front row
When supplying from a position between the lines, it is necessary to apply a tension of 15 to 50 g. In order for B and C to be sheath yarns and A to be core yarns, a tension must be applied.
If it is 50 g, less than 15 g or more than 50 g, it is difficult to obtain the above-described composite yarn of the core and sheath structure of the present invention. The meter number (Nm) of A is 1/50 to 1 /
The reason for using the worsted single yarn of No. 70 is that if the thickness is larger than 1/50, the ratio of the composite yarn to the core yarn becomes too high, and 1/7
Above 0, spinning is difficult. Accordingly, the above-mentioned yarn count of the obtained composite yarn has a metal count (Nm) in the range of 1/15 to 1/26 from the ratio of the core yarn and the sheath yarn.
Furthermore, the twist coefficient (α) of the composite yarn of the present invention is (α) = 50 to 80 from the spinnability of the composite yarn, and at the same time, the composition of the composite yarn is A: 20 to 40% and B: 20 by weight ratio. ~ 35%, C
= 60 to 25%, because these are required together with the twist coefficient in the above range for the expression and stability of the Bouquet length of the composite yarn having the layer structure of the present invention.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The production method of the present invention will be described in more detail. A is an acrylic raw cotton shrinkage ratio of 35% or more, preferably 35 to 50%, 2.0 to 4.5 denier, and is processed by a table or a tow pulling machine having a bias cut length of about 64 to 140 mm. In view of the properties as acrylic fiber, the staple of acrylic fiber is 60% or more,
Preferably, it is composed of 80% or more of the components, and is manufactured by a worsted spinning process.
It is a single yarn having a twist coefficient of 55 to 85. In addition, B is made of acrylic raw cotton and the shrinkage is 35% or more, preferably 50%,
A staple having a bias cut length of 2.0 to 4.5 denier and a bias cut length of 64 to 140 mm, or a staple of acrylic fiber processed by a tow pulling machine of 60% or more, preferably 80% or more. A roving of 0.3-0.8 g / m, constituted by the ingredients and produced in the worsted spinning process. C is a non-shrinkable or shrinkable fiber having a shrinkage of 4% or less, for example, 100% acrylic, 100% wool, 100% rayon, 100% nylon, or 100% lami, or a blended yarn thereof. 0.3 ~ manufactured by worsted spinning process
0.8 g / m roving.

[0008] In a worsted spinning type spinning machine, a guide capable of supplying two roving yarns B and C separately to a back roller of one weight is installed, and the two roving yarns B and C are provided separately. The interval is set to 4 to 8 mm so that it can be changed. In addition, a device is provided between the apron and the front roller, which serves as a guide and a separator which can supply the worsted single yarn A at the center of the two roving yarns. This relationship will be described below with reference to FIG. 1 and FIG. The roving yarn B is guided to the back roller (3) through the roving yarn guide (2) at intervals of 4 to 8 mm from the right side, and the roving yarn C is guided from the right side. Then, it passes through the apron (4) and is drafted by the front roller (7). Furthermore, an apron (4) and a front roller (7)
Through the insertion thread guide (5) installed between
g is applied to the center of the roving yarns B and C with a tension of g, and further guided to the front roller (7), where A, B and C are simultaneously transmitted from the front roller (7). Spun out.
(8) is a snell wire. After that, twist is applied,
A is a core layer, B and C are layer-structured yarns having a sheath, and heat-treated yarns are manufactured. Using a worsted single yarn as A in the core as described above,
By using a staple having a long bias cut length for the sheath portion, a yarn structure with a small elongation is obtained, the boucle form of the composite yarn of the present invention is stabilized, and the conventional twin yarn processing is required for the first time according to the present invention. Without the use of single yarn.

Regarding the details of the spinning conditions, the amount of roving, the supply interval of roving B and C, the number of spun yarn A, the tension at the time of feeding, etc. were carried out in the following ranges. Spinning count (Nm) 1/15 1/18 1/22 1/20 Twisting number (T / M) 190-210 210-230 250-280 280-360 Roving yarn B amount (g / m) 0.5-0.7 0.5-0.7 0.4-0.5 0.3-0.4 Roving C mesh (g / m) 0.7-0.8 0.7-0.8 0.4-0.5 0.3-0.4 Roving B, C spacing (mm) 6.0 5.0 4.0 4.0 0.0 Spun yarn A count (Nm) 1/50 1 / 50-60 1/60 1 / 60-70 Spun yarn A tension (g) 20-40 20-40 15-30 15-30 Twisting during spinning The number is set in the range of twist coefficient α = 50 to 80, and the respective weight ratios A: 20 to 40%, B: 20 to
35%, C: 60 to 25%.

[0010]

EXAMPLE XFB-900G 1/60 comprising 100% of high-shrink raw cotton F49-4.5 denier manufactured by Toyobo Co., Ltd., bias cut length of 89-140 mm, and 100% spinning single yarn A at the core.
(Nm), twist coefficient (α) = 77, and sheath portion B is also F49-4.5 denier, 89-140 mm, bias cut length, 0.4 g / m roving composed of 100%, C Has a wool of 22.5 microns and 0.31 g of 100%
/ M roving, 3 denier rayon, 76-120 mm bias cut length, 100%, 0.5 g / m roving, and spinning speed of (Nm) 1 / 24.11 / 21.1 /
Eighteen composite yarns were produced. The results are shown in [Table 1].

[0011]

[Table 1]

[0012] These yarns are skein-dyed and the SS
As a result of comparing the curve obtained by the method of the present invention (abbreviated as a new method) with the method obtained by the conventional method, as shown in FIG. It was confirmed that the knitting was possible as it was, and the Bouquet tone was stable and single yarn was used. On the other hand, in the conventional yarn, the yarn is stretched due to rewinding, the shape of the Bouclay tone is broken, the single yarn cannot be used as it is, and the twin yarn processing is required.

[0013]

According to the present invention, in the case of producing a Bouquet-crested spun composite yarn, conventionally, the use of a single yarn alone causes the yarn to be stretched due to the winding tension after the dyeing step and the shape stability cannot be obtained. However, the present invention uses a single yarn of each of the supply yarns A, B, and C to provide a yarn having a finest count of 40% or more than the current black-crested spun yarn, and has a Bouquet-like shape stability. The advantage is that the yarn can be obtained, and the supply yarns A, B, C
Can be composed of the same or different materials, and dyeing of different colors is possible by selecting dyes, which has the effect of remarkably changing the surface morphology of the Bouquet-shaped spun composite yarn. Widely used in the field of knitting such as jerseys and jerseys.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a roller part of a spinning machine used in the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a diagram showing an SS curve of a dyed yarn.

[Explanation of symbols]

 1. Supply Yarn Roast B 1 '. Supply Yarn Roast C2. Roving yarn guide 3. Back roller 4. Apron 5. Insertion thread guide 6. Supply yarn Worsted single yarn A7. 7. Front roller Snell wire

[Procedure amendment]

[Submission date] January 19, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

[Table 1]

Claims (3)

[Claims] The feed yarn A is a meter count (N) composed of 60% or more of acrylic raw cotton having a shrinkage of 35% or more.
m) 1 / 50-1 / 70 worsted single yarn, supplied yarn B
Is 2-4.5 denier, a staple with a bias cut length, and 60% acrylic raw cotton having a shrinkage of 35% or more.
The supply yarn C is a roving yarn composed of non-shrinkable fibers or shrinkage fibers having a shrinkage ratio of 4% or less, and the supply yarns A, B, and C (hereinafter referred to as A, B, and C). B) and C are separately supplied from a back roller at a distance between B and C, and A is placed at a position between the apron and the front roller. It is supplied to the center between B and C in a state where it is controlled with a tension of ~ 50 g, and A, B, C
Simultaneously from the front roller, A
Is the core yarn, and the yarn count of the composite yarn obtained by using B and C as the sheath yarn is in the range of 1/15 to 1/26, and the twisting coefficient (α) is 50 to 80. The weight ratio A: 20 -40%, B: 20-35%, C:
A method for producing a spun composite yarn having a layer structure, which is 60 to 25%. 2. The process according to claim 1, wherein the spun composite yarn having a layer structure is subjected to a steaming treatment, a hot water treatment, or a heat-dyeing treatment in a skein-like shape, whereby a Boucle shape is developed. A method for producing a Bouquet-like spun composite yarn having a layer structure according to claim 1. 3. The component C and the components A and B are composed of components different from each other. By selecting a dye, C, A and B are dyed in different colors, and the color change is remarkable as a surface shape. The method according to claim 1 or 2, wherein the composite yarn has a layered structure.