KR101331084B1 - Two-way knitted fabric and method of manufacturing the same - Google Patents

Abstract

The present invention relates to a two-way knitted fabric having excellent heat resistance and a method of manufacturing the same, and more particularly, the two-way knitted fabric according to the present invention is composed of nylon yarn and spandex yarn, and anionic surfactant and amphoteric properties are formed on the surface of the knitted fabric. Surfactant and 1,3-benzenedicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-ferridyl) of the formula (I) [1,3-benzendicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-pheridyl)] is coated with a heat resistance improver comprising at least one selected from the group. The yellowness index after heat treatment at 190 ° C. for 10 minutes It is characterized by being 1-20.

The present invention can solve the problem of poor dyeing, such as undyed or meridians, which frequently occurs due to lack of heat resistance during the manufacture of a two-way knit fabric.

Nylon, Yarn, Heat Resistance, Heat Resistance Enhancer, Surface, Coating, Dyeing

Description

Two-way knitted fabric and method of manufacturing the same

The present invention relates to a two-way knitted fabric having excellent heat resistance and dyeing property and a method of manufacturing the same. More specifically, a heat-resistant improving agent which is an anionic surfactant is used for the knitted fabric immediately before pre-setting. The present invention relates to a method for producing a two-way knit having improved heat resistance and dyeing resistance by treating with a padding solution dissolved in water, and a two-way knit prepared therefrom.

Hereinafter, the two-way knitted fabric according to the present invention represents a knitted fabric obtained by spunding a spandex yarn and a nylon yarn together to give excellent elasticity in both directions, and the two-way knitted fabric is mainly used as a swimsuit fabric, a female lingerie, and the like.

The two-way knitted fabric is a pre-setting process and a final heat of heat setting at a high temperature of about 190 ~ 200 ℃ before or after the dyeing process as shown in Figure 1 to fix the elasticity of the spandex yarn constituting it Final setting must be done.

In the heat setting processes, nylon yarns having heat resistance lower than the heat setting temperature cause a change in physical properties, thereby causing problems such as undyed and meridion in the dyeing process.

The undyed and meridional problems are related to the heat resistance and dyeing of nylon yarns. In addition, there is a tendency to set the heat setting temperature gradually higher in order to increase the production speed during the production of two-way knit fabric, such problems are expected to occur more seriously in the future.

In order to solve these problems, methods for improving the heat resistance of nylon yarns have been attempted by adding various heat resistance enhancers in the polymerization step in the production of nylon polymers used in the manufacture of two-way knit fabrics. Since it is evenly distributed over the entire area, in order to obtain the desired heat resistance improving effect, a large amount of heat resistance improving agent has to be added, and the production cost of nylon yarn has been so high that the commercialization was limited.

Another conventional technique is to improve the heat resistance of the tylon yarn by treating the surface of the yarn to be spun when the spinning yarn nylon yarn used in the manufacture of two-way knit yarn with a heat-dissipating agent dissolved heat-resistant agent, in this case yarn Since the spinning oil on the surface is removed unevenly in the Relax process, which is one of the processes of knitting dough, it does not develop satisfactory heat resistance in the subsequent pre-setting process and eventually generates a primary line. There is a problem that dyeing unevenness occurs.

SUMMARY OF THE INVENTION An object of the present invention is to solve such conventional problems, and to provide a two-way knitted fabric that has two-way knitted fabrics that continue to express excellent heat resistance and dyeability even during a processing process, so that there is no dye non-uniformity problem such as meridian generation.

In the present invention, the heat-resistant improving agent is dissolved in water immediately before the two-way knit dough is preheated to fix the knit dough that has undergone the Relex process so as to maintain excellent heat resistance even during the processing process and to suppress problems such as undyed or meridians. The present invention provides a method of padding the padding liquid.

In addition, the present invention is manufactured by the above manufacturing method, the yellowing index (Yellow Index) showing heat resistance is 1-20 and the K / S value indicating the dyeability is excellent in 5.2 ~ 6.1, there is no dyeing unevenness such as meridians or undyed It is intended to provide a two-way knit.

Hereinafter, the present invention will be described in detail.

The two-way knitted fabric according to the present invention is composed of nylon yarn and spandex yarn, an anionic surfactant, amphoteric surfactant and 1,3-benzenedicarboxamide of the following structural formula (I), N, N '-Bis (2,2,6,6-tetramethyl-4-ferridyl) [1,3-benzendicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-pheridyl)] The heat resistance improver including one or more selected ones is coated, and the yellowness index (Yellow Index) during heat treatment at 190 ° C. for 10 minutes is 1-20.

In addition, the manufacturing method of the two-way knitted fabric according to the present invention is an anionic surfactant, an amphoteric interface before pre-setting the knitted fabric after the Relax process to remove the spinning oil in the knitted fabric Activator and 1,3-benzenedicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-ferridyl) of formula (I) [1,3-benzendicarboxamide, N, N When a heat resistance improver including at least one selected from '-bis (2,2,6,6-tetramethyl-4-pheridyl)' is padded with a padding solution dissolved in water or a nylon spinning yarn. It is characterized by.

Typically, a method of processing a two-way knit dough includes a (Relax) process of removing the spinning oil on the surface by (i) immersing the knit dough in hot water as shown in Figure 1, and (ii) A pre-setting process for treating knitted fabrics subjected to the Relex process at a temperature of about 190 to 200 ° C., (i) a process for dyeing pre-heated knitted fabric dough, and (i) a dyed knit fabric It is to perform a final heat-setting (final-setting) process in order to treat at a temperature of about 190 ~ 200 ℃.

1 is an example of a process flow chart according to the present invention.

The knitted dough is embedded with about 1.8% by weight of a spinning emulsion based on the total weight of the knitting dough, and when processed by the Relex process, about half of the spinning emulsion is unevenly removed.

Therefore, when spinning a nylon yarn for two-way knit fabrication as described in the prior art for improving heat resistance and dyeing resistance, when the spinning oil dissolved in the heat-resistant agent is coated on the surface of the spinning yarn, it is applied to the surface of the nylon yarn. Since the spinning oil is unevenly removed in the Relex process, which is one of the processing processes of the knitted fabric, it does not express desired heat resistance in the preliminary heat fixing process, the dyeing process, and the final heat fixing process. Dyeing non-uniformity problem will occur.

In the present invention, in order to solve the above problems, the pre-heating step, the dyeing step and the final heat is carried out after the padding treatment with a padding liquid in which a heat resistance enhancer is dissolved immediately before the preliminary heat fixing of the knitted fabric passed through the Relex process. Even in the fixing process, the desired heat resistance is continuously expressed to solve dyeing non-uniformity problems such as unstained or meridians.

The relex process is a process of simply setting the shrinkage of the knit dough by removing the oil and foreign substances contained in the manufactured knit dough, and the knit dough is contained in water.

The 5-6 stage bathtub is passed through at a speed of 25-30 m / min for 60-90 seconds.

The water temperature of the first bath is about 85 ℃, the water temperature of each bath is gradually lowered toward the sixth bath, the water temperature of the sixth bath is preferably at room temperature.

The preliminary heat fixing process is a process of heat-setting the knitted fabric using a tenter, the temperature is 180 ~ 195 ℃, the passing speed is preferably set to 30m / min level.

The dyeing process is carried out in a conventional dyeing method and conditions using a Rapier dyeing machine.

The final heat fixation step is performed in the same manner as the preliminary heat fixation step, and depending on the application, a softener, a moisture absorbent, and the like may be treated on the knitted fabric.

The present invention does not specifically limit treatment conditions and treatment methods such as passing speed, temperature, and the like of the above processes.

The content of the heat resistance improver dissolved in the padding liquid is preferably 0.05 to 5% by weight.

When the content is less than 0.05% by weight, the effect of improving heat resistance and dyeing property is insignificant, and a hard line and undyed phenomenon occurs in the manufacture of a two-way knit, and when the content exceeds 5% by weight, the viscosity of the padding liquid is increased. The process of padding the knit dough surface becomes difficult.

The padding process consists of immersing the knitted fabric in the padding liquid and squeezing it with a squeegee roller.

Specific examples of the heat resistance improving agent include the trade name KMN-2011 of Matsumoto Yushi Seiyaku Co., Ltd., an anionic surfactant, and the trade name KIN-436 of Takemoto Oil & Fat Co., Ltd., an amphoteric surfactant. Or 1,3-benzenedicarboxamide of structure (I), N, N'-bis (2,2,6,6-tetramethyl-4-ferridyl) [1,3-benzendicarboxamide, N, N ' -bis (2,2,6,6-tetramethyl-4-pheridyl)] and the like are used.

1,3-benzenedicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-ferridyl) of the above formula (I) [1,3-benzendicarboxamide, N, N'- bis (2,2,6,6-tetramethyl-4-pheridyl)] is dissolved in nylon spinning yarn to prepare a coating solution, and the anionic surfactant and amphoteric surfactant are dissolved in water for coating. Prepare the stock solution.

The two-way knitted fabric produced by the method of the present invention as described above is composed of a nylon yarn and a spantex yarn, and is coated with a padding liquid in which a heat resistance enhancer is dissolved on the surface of the knitted fabric, and is subjected to heat treatment at 190 ° C. for 10 minutes. Yellow Index is 1 ~ 20 and K / S value is 5.2 ~ 6.1, which is the color difference after heat treatment at 190 ℃ for 10 minutes.

When the yellowing index is lower than the above range, the heat resistance is insufficient and dyeing unevenness easily occurs, and when the K / S value, which is the color difference, is out of the above range, the appearance is degraded.

In the present invention, the yellowing index and the K / S value were measured using computer color matching.

In the present invention, the heat treatment and dyeing property of the processed fabric are greatly improved because the pad is treated with a padding solution in which a heat-resistant agent is dissolved immediately before the pre-setting of the knitted fabric. It is possible to solve the problem of poor dyeing, such as undyed or meridians, which frequently occurs due to the lack of heat resistance in the manufacture of knitted fabrics.

In addition, since the present invention is excellent in heat resistance as described above, it is possible to shorten the heat treatment time by setting the heat treatment temperature high, which is advantageous in improving productivity.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples.

However, the present invention is not limited by the following examples.

Example  One

First, a padding liquid was prepared by dissolving 2.0 wt% of the brand name KMN-2011 of Matsumoto Yushi Seiyaku, Japan, a heat-resistant improving agent which is an anionic surfactant in pure water.

On the other hand, it is composed of 80% by weight of nylon yarn and 20% by weight of spandex yarn, five-stage containing water of 80 ℃, 70 ℃, 60 ℃, 50 ℃, 25 ℃ each knit dough containing 1.5 wt% of spinning oil The lax treatment was carried out while passing through the bath for 70 seconds at a speed of 25 m / min.

Next, the lax treated knitted fabric was padded with the padding liquid prepared above.

Next, pre-heating the padded knitted fabric while passing through the tenter at 280 ℃ at a rate of 30m / min, dyed in a conventional dyeing method and conditions in a repier dyeing machine, and finally heat-fixed under the same conditions as preheating fixed Work knitted fabrics were made.

The K / S values and yellowness index (YI) of the fabricated fabrics were measured.

Example  2

First, 1,3-benzenedicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4- in formula (I) was added to a nylon spinning spinning emulsion in an emulsion state of 2% concentration. Ferridyl) [1,3-benzendicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-pheridyl)] was dissolved 0.2% by weight to prepare a padding liquid.

On the other hand, it is composed of 80% by weight of nylon yarn and 20% by weight of spandex yarn, 5 stages containing water of 80 ℃, 70 ℃, 60 ℃, 50 ℃, 25 ℃ each knit dough containing 1.5 wt% of spinning oil The lax treatment was carried out while passing through the bath for 70 seconds at a speed of 25 m / min.

Next, the lax treated knitted fabric was padded with the padding solution prepared above.

Next, pre-heating the padded knitted fabric while passing through the tenter at 280 ℃ at a rate of 30m / min, dyed in a conventional dyeing method and conditions in a repier dyeing machine, and finally heat-fixed under the same conditions as preheating fixed Work knitted fabrics were made.

The K / S values and yellowness index (YI) of the fabricated fabrics were measured.

Example  3

First, a padding liquid was prepared by dissolving 2.0 wt% of KIN-436, a trademark of Takemoto Oil & Fat Co., Ltd., a heat-resistant improving agent which is an amphoteric surfactant in pure water.

On the other hand, it is composed of 80% by weight of nylon yarn and 20% by weight of spandex yarn, 5 stages containing water of 80 ℃, 70 ℃, 60 ℃, 50 ℃, 25 ℃ each knit dough containing 1.5 wt% of spinning oil The lax treatment was carried out while passing through the bath for 70 seconds at a speed of 25 m / min.

Next, the lax treated knitted fabric was padded with the padding liquid prepared above.

Next, pre-heating the padded knitted fabric while passing through the tenter at 280 ℃ at a rate of 30m / min, dyed in a conventional dyeing method and conditions in a repier dyeing machine, and finally heat-fixed under the same conditions as preheating fixed Work knitted fabrics were made.

The K / S values and yellowness index (YI) of the fabricated fabrics were measured.

Comparative Example  One

The knitted dough of Rexed Example 1 was pre-heated immediately as in Example 1 without being padded with a padding liquid containing a heat-resistant improving agent, and subsequently dyed and finally heat-set as in Example 1 to prepare a processed knitted fabric. It was.

The K / S values and yellowing index (YI) of the fabricated fabric were as shown in Table 1.

division Yellowness Index (YI) K / S value Example 1 1.43 5.4 Example 2 4.50 5.8 Example 3 17.76 6.0 Comparative Example 1 19.80 5.5

1 is an example of a process flow chart according to the present invention.

Claims (9)

It is composed of nylon yarn and spandex yarn, and an anionic surfactant, amphoteric surfactant and 1,3-benzenedicarboxamide, N, N'-bis (2,2,6) , 6-tetramethyl-4-peridyl) [1,3-benzendicarboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-pheridyl)] A two-way knitted fabric characterized in that it is coated and has a yellow index (Yellow Index) of 1 to 20 during heat treatment at 190 ° C. for 10 minutes.

The two-way knit fabric according to claim 1, wherein the K / S value, which is a color difference during heat treatment at 190 ° C. for 10 minutes, is 5.2 to 6.1. The two-way knit fabric according to claim 1, wherein the heat resistance improver is a trade name KMN-2011 of Matsumoto Yushi Seiyaku, Japan. The two-way knitted fabric according to claim 1, wherein the heat resistance improver is a trade name KIN-436 manufactured by Takemoto Oil & Fat Co., Ltd. of Japan. Anionic surfactants, amphoteric surfactants, and 1,3-benzenedica of the formula (I) below prior to pre-setting the knitted fabrics that have undergone the Relax process to remove the spinning oil in the knit dough: Reboxamide, N, N'-bis (2,2,6,6-tetramethyl-4-ferridyl) [1,3-benzendicarboxamide, N, N'-bis (2,2,6,6-tetramethyl- 4-pheridyl)] is a method for producing a two-way knit fabric, characterized in that the heat-resistant improver comprising at least one selected from the group consisting of a padding solution dissolved in water or nylon spinning yarn.

The method for manufacturing a two-way knit fabric according to claim 5, wherein the heat resistance improver is a brand name KMN-2011 of Matsumoto Yushi Seiyaku, Japan. The method for producing a two-way knit fabric according to claim 5, wherein the heat resistance improver is a trade name KIN-436 manufactured by Takemoto Oil & Fat Co., Ltd. of Japan. The method of claim 5, wherein the content of the heat resistance improver in the padding liquid is 0.05 to 5% by weight. The method of claim 5, wherein the knitted fabric that has undergone the pre-setting process is dyed and final-set. 6.

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