JPH06330483A - Package-dyed yarn package and method for dyeing yarn package - Google Patents

Abstract

PURPOSE:To provide a package-dyed yarn package of dyed synthetic fiber multifilament interlaced yarn having large yarn winding amount and free from dyed spot and a method for dyeing a yarn package. CONSTITUTION:The package dyed yarn package winding dyed synthetic fiber multifilament interlaced yarn around a perforated tube through a protective net and having >=700g wound amount and <=2 NBS color difference between the interior and the exterior. In dyeing the yarn, flow rate of dyeing liquid is lowered to 20liter/min.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn package in which dyed synthetic fiber multifimente entangled yarn is wound and a dyeing method thereof.

[0002]

2. Description of the Related Art At present, a package dyeing method is widely used for dyeing a yarn. However, when the synthetic fiber multi-filament entangled yarn is wound around a yarn package such as cheese or corn and is dyed with a package, even if the yarn package is formed by soft winding, uneven dyeing occurs in the yarn in the yarn package, which is very practical. It is not possible to obtain a dyed yarn that can be used. This is because when the synthetic fiber multifilament entangled yarn is wound to form a yarn package, the synthetic fiber multifilament entangled yarn itself has no bulge, so that the dyeing liquid is evenly distributed between the synthetic fiber multifilament entangled yarns in the yarn package. It is thought that it is because it is wound so closely that it cannot be distributed to. The dyeing spots become more remarkable as the winding amount of the yarn package increases. Therefore, conventionally, the winding amount of the yarn package is small, for example, it is reduced to 600 g / piece and the package is dyed.

[0003]

When a dyed yarn package is used for knitting or weaving, in the case of a yarn package having a winding amount of about 600 g / piece, a supply yarn package for the knitting or weaving process is used. The dyeing synthetic fiber multifilament is unfavorable because it requires a lot of replacement work of the yarn package in the winding process for forming and lowers the productivity of the knitting or weaving process, and has a large winding amount and no uneven dyeing. The advent of yarn packages in which entangled yarn is wound is strongly desired. SUMMARY OF THE INVENTION An object of the present invention is to provide a dyed synthetic fiber multifilament entangled yarn package having a large winding amount and no dyeing unevenness, and a dyeing method thereof.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to wind a dyed synthetic fiber multifilament entangled yarn around a tube having a plurality of holes through which a dyeing liquid can pass, through a protective net. A dyed yarn package having a winding amount of 700 g or more, which is achieved by a yarn package characterized by an inner and outer color difference of 2 NBS or less.

The preferred dyeing method for obtaining the yarn package according to the present invention is to use a synthetic fiber multifilament entangled yarn in a tube having a plurality of holes through which a dyeing solution or the like can pass and soften it so that the porosity is 0.5 or more. 20 liters per 1 kg of synthetic fiber multifilament entangled yarn contained in a package dyeing machine, by winding the cheese or corn to form cheese or corn, and dyeing the cheese or corn in a package dyeing machine with a dyeing solution containing a predetermined dye and a dyeing aid. After dyeing by circulating at a flow rate of 1 / min or less, a dyeing finishing agent is applied, drainage from a package dyeing machine, and drying of cheese or corn are performed. The porosity is calculated by the following formula. Q = 1-P / ζ (1) Q: Porosity P: Winding density V: Volume of yarn package (cm ³ ) G: Weight of yarn in yarn package (g) ζ: Specific gravity of synthetic fiber (g / cm) ³ )

The term "synthetic fiber multifilament entangled yarn" as used in the present invention means that untwisted multifilaments are twisted at 40 T / m or less in order to bundle individual single filaments constituting the multifilaments. It means a synthetic fiber multifilament that is interlaced at 5 to 80 times / m. In order to obtain a dyed yarn package of the present invention, which is free from conventional dyeing, when dyeing a yarn package such as cheese or corn in which synthetic fiber multifilament entangled yarn is wound with a package dyeing machine, conventional dyeing is used. While the dye liquor is circulated at a flow rate of 30 liter / min or more per kg of yarn stored in the machine, it is necessary to reduce the flow rate of the dye liquor to 20 liter / min or less, preferably 15 liter / min or less. Is. That is, conventionally, in order to eliminate dye spots, a high flow velocity was used for the purpose of minimizing the time required for the dyeing liquid to reach the outer layer from the inner layer of the yarn package, but in the present invention, the dyeing liquid yarn package is used. By slowing the movement of the dye liquor from the inner layer to the outer layer as much as possible, the dye liquor is evenly distributed to the synthetic fiber multi-filament entangled yarns at various parts in the yarn package, which causes the dye in the dye liquor to be contained in the yarn package. As a result, a yarn package without dye spots can be obtained by uniformly adsorbing the synthetic fiber multifilament entangled yarn in each part.

Dyeing unevenness of the yarn package is revealed by knitting the dyed yarn with a single-knitting cylinder knitting machine having a cylinder diameter of 3.5 inches and observing the knitted fabric. In the yarn package of the present invention, not only in the broad sense of dyeing spots obtained by observing the knitted fabric, but also in the values of the inner and outer color differences showing a minute difference in dyeing and dyeing, the value is 2 NBS or less, and the products such as knitted fabrics and woven fabrics are obtained. In the above, it is possible to make the dyeing defect free.

In the package dyed yarn package and the dyeing method therefor according to the present invention, the synthetic fiber multifilament has a breaking elongation of 10% to 40%, a boiling water shrinkage of -1.5% to 5%, and 2 In the case of an acrylic multifilament having a secondary dislocation point of 65 ° C to 75 ° C, a particularly excellent effect can be exhibited.

FIG. 1 is a dyeing temperature rising curve used in Example 1 (acrylic multifilament) described later. As shown in FIG. 1, the temperature at which the dye and the dyeing aid are added during the dyeing of the acrylic multifilament is almost the same as the secondary transition point of the acrylic multifilament, which is 65 ° C to 75 ° C. The yarn package inside is very soft at that point and is easily deformed by the flow of the dye liquor. In the present invention, the volume of the dye liquor is reduced to 20 liters / min or less that does not deform the shape of the yarn package, so that the winding density is 0.45 or more and the winding amount is 70%.
Even if the amount is 0 g or more, a good package dyed yarn package free of yarn bleeding and uneven dyeing can be obtained.

In the yarn package of the present invention, the bundle of synthetic fiber multifilaments is twisted at 40 T / m or less, or 5 to 8
Since the yarn is formed by the interlacing process of 0 times / m, the yarn form is close to that of the multifilament yarn, and the flatness and luster of the filament yarn can be maximized.

[0011]

EXAMPLES The present invention will be described in detail below based on examples showing preferred examples of the dyed yarn package of the present invention. Example 1, Comparative Example 1 3% boiling water shrinkage, 3.5 g / d breaking strength, 35 breaking elongation
%, 30 times / m of interlaced acrylic multifilament 150d / 60f, polyester multifilament false twisted yarn perforated tube covered with a net (outer diameter 72mmφ, inner diameter 6
4 mmφ, 170 mm in length) was soft-winded using a spindle drive type winder SST type manufactured by Kozu Seisakusho to obtain parallel cheese with a winding amount of 1000 g. The porosity of the obtained cheese was 0.65. The above cheese was put into a high-pressure cheese dyeing machine (capacity 60 kg) manufactured by HISAKA MFG. Co., Ltd., and 900 liter / min (15 liters / cheese per cheese was used based on the dyeing condition diagram shown in FIG. min) was obtained to obtain the package dyed yarn package of the present invention (Example 1). On the other hand, only the flow velocity is 1
800liter / min (30liter / min per cheese
) And other conditions being the same as in Example 1 to obtain a package dyed yarn package of Comparative Example 1. Dye KAYACRYL YELLOW 3RL ・ ED 0.055% owf 〃 RED GL ・ ED 0.062% owf 〃 BLUE 4GSL ・ ED 0.070% owf Dyeing aid Nikkasan Salt CI-12 (leveling agent) 1% owf Sandozin ( Sand) (Penetrant) 1% owf Acetic acid 2% owf

Using the obtained cheese dyed yarns of Example 1 and Comparative Example 1, the cylinder diameter was 3.5 inches and the number of needles was 240.
A knitted fabric having a width of about 9 cm was knitted with a tubular knitting machine of a book, and when the dyeing spots were observed, no dyeing spots were found in the cheese of Example 1 of the present invention as shown in FIG. 2 (A). In the cheese of Comparative Example 1, as shown in FIG. 2 (B), a clear difference in shade was observed, and it was confirmed that there was stain spots. The color difference between the inside and outside of the cheese of Example 1 was 2 NBS or less. Further, when the morphology of the cheese after dyeing is compared, the cheese of Example 1 has no morphological collapse as shown in FIG. 3 (A), but the cheese of Comparative Example 1 has morphology as shown in FIG. 3 (B). It was broken.

Example 2 and Comparative Example 2 Acrylic multifilament 300d having a boiling water shrinkage of 4.5%, a breaking strength of 4.5 g / d, a breaking elongation of 16% and a twist of 20 T / m. / 120f is a perforated tube covered with a net using polyester multifilament false twisted yarn (outer diameter 72 mmφ, inner diameter 64 mm
φ, length 170 mm) was soft-winded using a spindle drive type winder SST type manufactured by Kozu Seisakusho to obtain parallel cheese with a winding amount of 1000 g. The porosity of the obtained cheese was 0.55. Using the dyes and dyeing assistants described below, the cheese was dyed at a flow rate of 900 liter / min based on the dyeing condition diagram shown in FIG. 4 to obtain a dyed yarn package of the present invention (Example 2). On the other hand, only the flow rate was increased to 1800 liter / min, and other conditions were the same as in Example 2 to obtain a package dyed yarn package of Comparative Example 2. Dye KAYACRYL BLACK R / ED 6.0% owf 〃 YELLOW 3RL / ED 0.2% owf Dyeing aid Acetic acid 1% owf Sandozin (sand) (penetrant) 2% owf

When the dyed yarns of the obtained cheeses of Example 2 and Comparative Example 2 were observed for the dyeing unevenness by the same knitted fabric as in Example 1 and Comparative Example 1, the cheese of Example 2 of the present invention was obtained as shown in FIG.
No stain spots were found as shown in (A), but the cheese of Comparative Example 2 clearly showed a difference in shade as shown in FIG. 5 (B), and it was confirmed that stain spots were present. The color difference between the inside and outside of the cheese of Example 2 was 2 NBS or less. The cheeses of Example 2 and Comparative Example 2 did not suffer from morphological deterioration as shown in FIGS. 6 (A) and 6 (B), but surface stains occurred in Comparative Example 2 of FIG. 6 (B). Was.

[0015]

The package dyed yarn package obtained by the dyeing method according to the present invention has a winding amount of 700 g or more,
In addition, since it has no stain spots, it can be used as a high-quality yarn package without stain spots in a large package for knitting and weaving.

[Brief description of drawings]

FIG. 1 is a diagram showing a dyeing condition diagram of a dyeing process for obtaining a package dyed yarn package of Example 1 and Comparative Example 1 of the present invention.

FIG. 2 is a plan view of a knitted fabric showing the shape of fibers in the knitted fabric for showing the presence or absence of stain spots, and FIG.
2B is a photograph of Comparative Example 1.

FIG. 3 is a photograph showing the shape of fibers in cheese to show the morphology of cheese, and FIG. 3 (A) is a photograph of Example 1;
FIG. 3B is a photograph of Comparative Example 1.

FIG. 4 is a diagram showing a dyeing condition diagram of a dyeing process for obtaining package dyed yarn packages of Example 2 and Comparative Example 2 of the present invention.

5 is a plan view of a knitted fabric similar to that of FIG.
5A is a photograph of Example 2, and FIG. 5B is a photograph of Comparative Example 2.

FIG. 6 is a photograph of cheese similar to FIG.
6A is a photograph of Example 2, and FIG. 6B is a photograph of Comparative Example 2.

Claims (2)

[Claims] 1. A dyed yarn package with a winding amount of 700 g or more in which a dyed synthetic fiber multifilament entangled yarn is wound around a tube having a plurality of holes through which a dyeing liquid can pass through a protective net. A yarn package characterized by having an inner and outer color difference of 2 NBS or less. 2. Cheese or corn is formed by soft winding a synthetic fiber multifilament entangled yarn into a tube having a plurality of holes through which a dyeing solution or the like can pass, to form cheese or corn. Alternatively, the corn was dyed in a package dyeing machine by circulating a dyeing solution containing a predetermined dye and a dyeing aid at a flow rate of 20 liter / min or less per 1 kg of the synthetic fiber multifilament entangled yarn contained in the package dyeing machine. After that, a dyeing finishing agent is applied, drainage from a package dyeing machine, and drying of cheese or corn are performed. The porosity is calculated by the following formula. Q = 1-P / ζ (1) Q: Porosity P: Winding density V: Volume of yarn package (cm ³ ) G: Weight of yarn in yarn package (g) ζ: Specific gravity of synthetic fiber (g / cm) ³ )