JPH08109531A - Fancy yarn having multi-colored effect and its production - Google Patents

Abstract

PURPOSE: To obtain a bulky fancy yarn having a multi-density of loops, excellent in multi-colored effect and suitable for woven fabrics and interior materials having high decorative property and provide a method for producing the fancy yarn. CONSTITUTION: This specific fancy yarn having multi-colored effect is formed by carrying out blended spinning of (A) a raw stock consisting of a staple fiber of a cation dye-dyeable acrylic fiber having 0.8-1.5 denier fineness and 30-45% boiling off shrinkage with (B) a raw stock composed of a staple fiber of an acid dye-dyeable acriylic fiber having 0.8-3.5 denier fineness and 0-3% boiling off shrinkage and a staple fiber of a cation dye-dyeable acrylic fiber at a mixed ratio of (100/0) to (50/50), at a blend ratio of the components A/B of (30/70) to (50/50) to prepare a blended spun fine yarn having >=20 single yarn count, and then doubling and twisting two or more numbers of these blended spun yarns and subjecting the resultant yarn to wet heat treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is a design yarn which is excellent in lightness, soft in texture, good in fluff loss, has a different color effect and is highly decorative. The present invention relates to a design yarn having a different color effect, which is suitable for an interior material, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, as a method for producing an acrylic bulky yarn having a different color effect, an acrylic bulky staple fiber raw cotton having a fineness of 2 denier or more and a hot water shrinkage rate of 0 to 3% of a fineness of 2 denier or more are used. Acid dye dyeable acrylic fiber staple fiber and normal acrylic fiber staple fiber 50/50 to 30/70
Spun yarn is mixed with raw cotton mixed in the ratio of
It was commonly known and practiced.

[0003]

However, since the above-mentioned spun yarn uses acrylic staple fibers having a fineness of 2 denier or more, a spun yarn having sufficient bulkiness cannot be obtained, and therefore, the bulkiness of the spun yarn cannot be increased. It was not possible to produce large clothing knits and fabrics. Further, even when two such spun yarns are twisted together and dyed, a design yarn having a simple color difference can be obtained, and a clothing knitted fabric or a woven fabric having a subtle different color effect and high decorativeness can be obtained. I couldn't.

The present invention is intended for clothing knitted fabrics, woven fabrics, and interior materials for interior decoration, which have a high density, have a high density, and have an excellent discoloration effect, which cannot be achieved in the range of the above-mentioned prior art. The present invention provides a suitable design yarn and a method for producing the same.

[0005]

In order to solve the above problems, the present invention is configured as follows. That is, as basic constituent requirements for imparting bulky bulkiness to the obtained spun yarn, staple fibers of acrylic fiber having a hot water shrinkage of 30 to 45% and staples of acrylic fiber having a hot water shrinkage of 0 to 3% are used. A spun yarn is formed by blending with fibers. As a basic constituent requirement for imparting a different color effect to the obtained spun yarn, as the highly shrinkable fiber (hot water shrinkage 30 to 45%), the staple fiber of the cationic dye dyeable acrylic fiber is used as the low shrinkable fiber (hot water shrinkage). (0 to 3%), the mixing ratio of acrylic dye fiber dyeable with acid dye and acrylic staple fiber dyeable with cationic dye is 1
A mixed fiber of 00/0 to 50/50 is selected, and both are mixed-spun to form a spun yarn.

Further, the spun yarn of the present invention is constituted in order to give the obtained spun yarn a multi-density loop which is not present in conventional products, a lightweight feeling, an excellent soft texture and bulkiness, and an excellent discoloration effect. The fineness of the fiber is a. Aqueous denier of cationic staple dyeable acrylic staple fiber having a hot water shrinkage of 30 to 45% is 0.8 to
1.5 denier, b. Acidic dye dyeable acrylic staple fiber or acid dye dyeable acrylic staple fiber / cationic dye dyeable acrylic staple fiber mixed fiber having a hot water shrinkage of 0 to 3% has a fiber denier of 0.8 to 3.5.
Be denier. Raw cotton (A) consisting of staple fibers made of acrylic fiber that has high hot water shrinkability and dyeable with cationic dyes, and raw fiber that is a mixture of acidic dye dyeable staple fibers and cationic dye dyeable staple fibers that have low hot water shrinkability. The blending ratio with (B) is A / B = 30/70 to 50/50
To do. To form a spun yarn by twisting two or more fine-spun mixed spun yarns with a single yarn count of 20 (meter count) or more. By satisfying each of the above constituent requirements, the problem has been solved and the object of obtaining the specially designed spun yarn of the present invention having a bulky and different color effect has been achieved.

[0007]

In the following, the significance of each constituent element in the present invention,
Also, the operation will be described in detail. 1. Raw cotton (A) and raw cotton (B) specified in the patent requirements
The hot water shrinkage of the constituent fibers of
~ 45%, raw cotton (B) = 0-3%, raw cotton (A)
The resulting spun yarn was subjected to hot water treatment, such as dyeing, by having a high heat shrinkability and a large difference in hot water shrinkage difference between the raw cotton (A) and the raw cotton (B). At this time, due to shrinkage of the raw cotton (A) fibers constituting the spun yarn, an excess length is generated in the raw cotton (B) fibers, loops are generated and bulky bulkiness is imparted, and the raw cotton (A),
The shrinkage ratio of (B) and the difference in shrinkage ratio between the raw cotton (A) and (B) are indispensable values in order to obtain the desired bulkiness. Is less than 30%, or the hot water shrinkage ratio of the raw cotton (B) constituent fibers is large, and the difference between the hot water shrinkage ratio of the raw cotton (A) constituent fibers and the hot water shrinkage ratio of the raw cotton (B) constituent fibers is If less than 27%,
The loop generation is insufficient and the desired bulky bulky property cannot be imparted.

2. As specified in the constituent requirements, the constituent fiber of the raw cotton (B) is a mixed fiber having a mixing ratio of the acid dye dyeable staple fiber and the cationic dye dyeable staple fiber of 100/0 to 50/50, and the raw cotton (A). By forming a spun yarn by blending with a spun yarn, dyeing processing is performed to develop and impart bulkiness based on the appearance of loops, and at the same time, to form a design yarn exhibiting a marbling state and a different color due to the different dyeability of constituent fibers. Can be done. 3. The obtained spun yarn having a bulky design property is further imparted with a soft texture that is rich in a feeling of lightness and has no loss of hair, and is given multi-density loop bulkiness and has a function of having sufficient strength and elongation. In order to do so, the constituent fiber denier of the raw cotton (A) and (B) forming the spun yarn is specified as specified in the patent requirements, respectively. Raw cotton (A): 0.8 to 1.5 denier Raw cotton (B): 0.8-3.5 denier, preferably 0.
It should be in the range of 8 to 2.0 denier. Although the cross-sectional shape of the constituent fibers may be circular, triangular, flat or atypical cross-section yarn, the use of raw cotton (B) as the atypical cross-section yarn can emphasize the effect of different colors and is particularly effective. Target.

If the constituent fiber denier is larger than the specified range, it becomes impossible to obtain a bulky yarn having a soft texture and a multi-density loop.
Further, since the number of filaments forming a spun yarn single yarn decreases, the number of twists required to obtain the minimum single yarn strength / elongation and the minimum required fluff drop resistance becomes high, and the number of twists of the single yarn becomes a tight twist. Therefore, it becomes difficult to obtain a bulky yarn having a good texture and a soft multi-density loop as in the present invention, because the occurrence of a loop during heat treatment by blending of different heat-shrinkable fibers and the bulkiness increase are hindered. It will be impossible. The denier difference is provided between the raw cotton (A) and the raw cotton (B) in order to produce a different color effect, and in particular, when the raw cotton (B) becomes thicker, the color becomes darker and the effect increases. The suitable number of constituents of acrylic staple fiber per single yarn of spun yarn that meets such a target is 120 or more per single yarn.

4. Highly hot water shrinkable raw cotton (A) specified in the Patent Requirements and raw cotton (B) made of a mixture of low hot water shrinkable acid dye dyeable staple fiber and cationic dye dyeable staple fiber (B) Ratio to A
Setting / B = 30/70 to 50/50 is also an important requirement for obtaining the intended bulky yarn having a good texture and a soft multi-density loop, and for effective expression of different color. It is also an important requirement, and it is the provision of appropriate conditions necessary for achieving each purpose. That is, if the content ratio of the high-heat-water shrinkable raw cotton (A) is less than 30%, the bulkiness does not reach the target value even if the obtained spun yarn is heat-treated in a wet manner such as dyeing, so that the desired multiplicity is reduced. Not only a yarn having a density loop cannot be formed, but also variations in shrinkage and bulkiness occur, a bulky design yarn having a uniform multi-density loop cannot be obtained, and an abnormal yarn having an uneven appearance and yarn physical properties is obtained. If the content of the high-hot-water shrinkable raw cotton (A) exceeds 50% and is too large, the texture of the high shrinkage yarn increases, resulting in poor texture (a feeling of stiffening becomes strong), and a low amount for forming a loop. The shrinkage component threads are reduced, and the multi-density loops are not formed, either of which is not suitable as a product.

5. In order to obtain a bulky design yarn having a desired multi-density loop, it is also possible to form a spun yarn by twisting two or more fine-count mixed spun yarns into a spun yarn with a single yarn count of 20 or more specified in the patent composition requirements. Is an effective and necessary requirement. In order to obtain a bulky design yarn having an excellent multi-density loop, the single yarn count is preferably 30 or more,
Further, it is preferable that the number of acrylic staple fibers forming the single yarn is 120 or more, and it is desirable that two to five spun single yarns are combined and twisted to form a multiple strand. This is because the knitting is not made clear and the density is increased to give the appearance as if there were short fluff. In addition, it is desirable to make the upper twist as strong as possible in the case of forming a multiple yarn, and the upper twist coefficient (K) needs to be 40 or more. It is preferably 100 or less. K is calculated by the following mathematical formula.

[0012]

[Equation 1]

Here, T is the number of twists (t / m), Nm is the number of meters, and n is the number of twists. The upper twist number effect is to provide a multi-density effect and to reduce the elongation of the yarn to give the appearance of fluff.

If a spun yarn satisfying the above patent requirements is prepared and dyed according to a conventional method (for example, skein dyeing) in a dye bath composed of an acid dye, it has a marbling-like discoloration effect and a multi-density loop. A bulky design yarn is obtained, and by dyeing with an acid dye and a cationic dye, a bulky design yarn having a different color effect and having a multi-density loop can be obtained.

The contents of the present invention will be specifically described below with reference to examples.

【Example】

[Example 1] 40% of raw cotton (A) made of acrylic fiber staple fiber dyeable with a cationic dye having a hot water shrinkage of 25, 30, 40% and a high denier of 1.5 denier.
Raw cotton (B) 6 consisting of acrylic fiber staple fiber dyeable with acid dye of 1.5 denier with hot water shrinkage of 1%
Nichiron Black G (200%) 2 is produced by blending 0% and producing 1/40 count blended spun yarn, and further making 4 combined twisted spun yarns (twist number 250 t / m, twist coefficient 79). ．
Bulk dyeing is performed by 5% owf single dyeing,
The effect of the shrinkage rate of hot water on the raw cotton (A) on the multi-density loop expression and the bulky effect expression was evaluated. The test evaluation results are shown in Table 1, and in order to give a sufficient texture with sufficient multi-density loop expression and bulky effect expression, the hot water shrinkage ratio of the raw cotton (A) is 30% or more and 45% or less. It has been found that it is necessary and it is impossible to give a sufficient texture with a sufficient multi-density loop expression and bulky effect expression when the hot water shrinkage rate is 25%.

[0016]

[Table 1]

[Example 2] 40% by weight of raw cotton (A) made of staple fiber dyeable acrylic dye having a high denier of 1.5% and a hot water shrinkage of 40%
And the hot water shrinkage rate is 1% and the constituent fiber denier is 0.4,
Raw cotton (B) 6 consisting of acrylic fiber staple fiber dyeable with acid dyes of 0.8, 1.5 and 3.0 denier
0% by weight is blended to make a 4/40 count blended spun yarn, 1.25% of Suminol Milling Black VLG.
The effect of the constituent fiber denier in the raw cotton (B) on the development of the different color effect (developing the marbling effect) was evaluated by performing single dyeing with owf. The number of upper twists is 250 t / m, and the twist coefficient is 79. The test evaluation results are shown in Table 2,
In order to develop an effective discoloration effect, it is preferable that the constituent fiber denier of the raw cotton (B) is 0.8 to 3.0 denier, and 0.4 denier cannot reveal a sufficient discoloration effect. did.

[0018]

[Table 2]

Example 3 Cationic dye dyeable acrylic fiber with high denier of 1.5 denier and hot water shrinkage of 40% 40% by weight of raw cotton (A) made of staple fiber
And the mixing ratio of the staple fiber of the acid dye-dyeable acrylic fiber staple fiber and the cationic dye-dyeable acrylic fiber having a hot water shrinkage of 1% and a fiber denier of 1.5 denier is 100 / 0,20 / 10. , 10/1
60% by weight of 0,10 / 30 lower hot water shrinkable raw cotton (B) is mixed and spun into a 4/40 count mixed spun yarn, and Nichiron Black G (200%) 2.5% owf and Suminol Milling Lilliant Red 4BS 1.
Different color dyeing with 25% owf was performed, and the effect of the mixing ratio of the staple fiber of the acid dye dyeable acrylic fiber staple fiber / cationic dye dyeable acrylic fiber in the raw cotton (B) on the development of the different color effect was evaluated.
The number of twists was 250 t / m, and the twist coefficient was 79.
The test evaluation results are shown in Table 3, and in order to exert an effective discoloration effect, the mixing ratio of the staple fiber of the acid dye dyeable acrylic fiber staple fiber / cationic dye dyeable acrylic fiber is 100 / 0-10
It was found that / 10 was required, and a sufficient discoloration effect could not be exhibited at a mixing ratio of 10/30.

[0020]

[Table 3]

[0021]

EFFECTS OF THE INVENTION Since the present invention is constructed and operates as described above, a novel bulky suede-like bulky having a multi-density loop and a different color effect by dyeing with an acid dye or a cationic dye. A yarn is obtained, and a knitted fabric using the yarn has an excellent texture, has a natural feel due to various different color effects, a bulky property, and a lightweight feel, and can provide a novel and elegant acrylic fabric having a suede-like appearance.

Claims (2)

[Claims] 1. A fineness of 0.8 to 1.5 denier,
Raw cotton (A) made of cationic fiber dyeable acrylic fiber staple fiber having a hot water shrinkage of 30 to 45%,
It has a fineness of 0.8 to 3.5 denier and a hot water shrinkage of 0.
A blending ratio A / B of the raw cotton (B) having a mixing ratio of the acrylic fiber staple fiber dyeable with an acid dye of up to 3% and the acrylic fiber staple fiber dyeable with a cationic dye of 100/0 to 50/50 is 100% to 50/50. 30 / 70-50 /
50, and a design yarn having a different color effect, which is made of a mixed spun twisted spun yarn having a single yarn count of 20 or more. 2. A raw cotton (A) made of staple fiber of a cationic dye-dyeable acrylic fiber having a fineness of 0.8 to 1.5 denier and a hot water shrinkage of 30 to 45%.
And 100/100 of acid dye dyeable acrylic fiber staple fibers and cationic dye dyeable acrylic fiber staple fibers having a fineness of 0.8 to 3.5 denier and a hot water shrinkage of 0 to 3%. A / B is 30/70 to 50 / with raw cotton (B) having a mixing ratio of 0 to 50/50.
After mixing at a ratio of 50, spinning a mixed yarn of 20 or more single yarn counts, and then twisting two or more yarns together, and then wet heat treating to form a design yarn having a multi-density loop. And a method for producing a design yarn having a different color effect.