KR100282589B1 - Manufacturing method of highly elastic letter - Google Patents

Abstract

In the present invention, two polyamide filament yarns each having a single yarn fineness of 0.3 to 1.0 denier and a total fineness of 40 to 70 denier are used as a core yarn and an effect yarn, And the air jet is manufactured by winding the yarn in a relaxed state, and then the yarn is piled up like a spun yarn and the uneven loop is produced, and then the air jet is processed by a circular knitting machine using a polyurethane elastic yarn.

Description

Manufacturing method of highly elastic letter

The present invention relates to an air jet produced from two polyamide filament yarns having a monofilament fineness of 0.3 to 1.0 denier and a total fineness of 40 to 70 denier, and is characterized in that the yarn is circular and made of polyurethane elastic yarn and exhibits appearance, The present invention relates to a method for manufacturing a knitted fabric.

Korean Patent Publication No. 97-43433, nylon filament yarn is supplied at a supercharging rate of 3 to 10%, and the heat-treated yarn and the non-heat-treated core yarn heat-treated in a contact type hot plate at 150 to 200 ° C, Which is supplied to an air jet apparatus to perform hybridization.

The above method is a method of separately producing an effect yarn and a core yarn and then fusing them in an air jet apparatus, so that the manufacturing process is complicated and the quality control is difficult, resulting in an increase in manufacturing cost.

In addition, it was unsuitable for producing yarns in the form of yarns in which the loops were unevenly expressed and the yarns were good.

In Korean Patent Laid-Open Publication No. 97-51839, elastic yarn is used as the first yarn to constitute the basic structure, polyester yarn and nylon yarn are formed as the second yarn and the third yarn to form a separate structure, so that the yarn is light and smooth However, this method has not been able to prevent curling or folding, and Korean Patent Laid-Open Publication No. 97-27417 discloses a method for fabricating a stretchable fabric, The present inventors have proposed a processing method capable of shrinking a high stretchable fabric stepwise by adopting a dry heat setting method and a wet heat setting method in order to minimize the occurrence of wrinkles and to suppress the generation of wrinkles. However, this method has a problem in that the process cost becomes high and the process control becomes difficult.

Disclosure of the Invention The present invention has been made to solve the conventional problems as described above, and it is an object of the present invention to provide a method of manufacturing a highly elastic letter having excellent appearance and touch of a spun yarn product and excellent stretchability, It is.

1 is a schematic view of a manufacturing process of an air jet used in the present invention;

Description of the Related Art [0002]

One ; Core yarn, 2; Effects, 5; An air jet device, 7; Heating plate

10; Winding roller

A manufacturing method of an air jet construction work according to the present invention will be described in detail with reference to FIG.

The core yarn 1 is wound around the first supply roller 3 with the core yarn 1 and the effect yarn 2 made of polyamide multifilament yarns each having a single yarn fineness of 0.3 to 1.0 denier and a total fineness of 40 to 70 denier, Thus, the effect yarn 2 is supplied to the air jet apparatus 5 by the second supply roller 4.

At this time, the core yarn 1 is supplied to the air jet apparatus 5 at a supercharging rate of 8 to 12%, and the effect yarn 2 is supplied at a supercharging rate of 22 to 28% to be hologram interlocked.

If the supercharging rates of the core yarn 1 and the effect yarn 2 are less than 8% and 22%, respectively, the air jet can not obtain a specific volume feeling. The core yarn 1 and the effect yarn 2 are rewound on the first and second supply rollers 3 and 4 with elapse of time so that the working efficiency And the bell feel is easily extinguished even with a slight tension.

The air pressure in the air jet device 5 is 7 to 9 kg / cm ² .

If the air pressure is less than 7 kg / cm ^{2, a} sufficient bulkiness feeling can not be obtained. If the air pressure is more than 9 kg / cm ² , there is no synergistic effect of bamboo feeling and fusing.

The blended yarn that has passed through the air jet device 5 is thermally fixed at 175 to 185 ° C in the non-contact type heat plate 7 via the third supply roller 6.

If the heat setting temperature is less than 175 캜, a nonuniform loop can not be formed. If the heat setting temperature is more than 185 캜, a part of the cross-linked resin is melted to lower the loop-

The processed yarn passed through the noncontact type heat plate 7 is supplied to the fourth supply roller 8 at a supercharging rate of 0% and is supplied to the winding roller 10 at a supply rate of -4 to -6% via the fifth supply roller 9 Is wound.

If the feed rate is less than -4%, the loop stability is lowered and the winding form becomes worse. If the feed rate exceeds -6%, the uneven loop generated due to the excessive tension applied to the worker is lost and the winding form becomes poor.

When the air jet produced as described above is circularly knitted with a polyurethane elastic yarn in a 28-gauge circular knitting machine, a transverse stripe is not generated, and a ring letter having no selvage curl or folding can be manufactured .

The ring letter is preliminarily set at 180 to 190 ° C for 20 to 30 seconds without setting a humid and dry heat setting, and is sewn into a cylindrical shape, followed by refining, dyeing, and tentering.

Example 1

Two 115 filament yarns of 50 denier / 48 filaments were used to fabricate a polyamide-based three-fineness air jet of 115 denier.

One core is supplied to core yarn and one core yarn is supplied to effect yarn. Core yarn is supplied at 10% and Effect yarn is supplied at overfeed rate of 26%. The polyamide-based three-sided air jet, supplied at different overfeed rates, passes through the Heberlein T-312K air jet nozzle and forms a non-uniform, bulky loop by compressed air. At this time, the compressed air pressure is 8 kg / cm ² .

The construction of the air jet thus manufactured is set at a temperature of 180 ° C.

The set processing yarn was wound at a feeding rate of -4.5%, and a polyamide-based three-finishing air jet was manufactured.

The polyamide-based three-sided air jet produced in this manner was knitted into a general single plain knit structure by putting a polyurethane elastic yarn and a polyurethane elastic yarn into a 28-gauge, 30-inch circular knitting machine with 96 bobbins.

The knitted fabric was allowed to stand at a temperature of 180 ° C for 30 seconds, sealed in a cylindrical shape, refined and dyed, and tentered so that the weight of the final fabric was 210 g / yard.

Table 2 shows the properties of the processed yarn and fabric produced as described above.

Comparative Examples 1 to 3

The manufacturing conditions of the processed yarn and the knitting conditions of the fabric were as shown in Table 1, and the results are shown in Table 2.

In Comparative Examples 2 and 3, an air jet nozzle was used as T-311.

Comparative Examples 4 to 6

The processed yarns were manufactured by false twisting method.

The twist conditions and knitting conditions were as shown in Table 1 and the results were as shown in Table 2.

division Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Saga worker ○ △ × × ○ ○ ○ Processor Appearance (Bulk Properties) ○ △ × × ○ ○ ○ Processor shape stability ○ △ × × ○ ○ ○ Knitting workability ○ △ △ △ ○ ○ ○ Product appearance (transverse stripe state) ○ ○ ○ ○ △ △ △ Dyeing workability ○ ○ ○ ○ △ △ △ Product curl ○ ○ ○ ○ △ △ △ Product Folding ○ ○ ○ ○ △ △ △ Product softness ○ ○ ○ ○ ○ × × elasticity ○ △ △ △ ○ △ △ Weight ○ ○ ○ ○ ○ × ○

※ Assessment Methods

· Sagawa Co., Ltd.: It was evaluated as the frequency of occurrence of thread trimming during bulb processing. △, △ for 2 ~ 3 times, × for 4 times or more.

· Appearance of processing machine: The size and thickness of the loop are visually observed, and when it is excellent, it is evaluated as ◯, when it is normal, it is evaluated as ×, and when it is bad, it is evaluated as ×.

· Processor type safety: The extent to which the loop is kept unremoved is visually observed.

· Knitting workability: actual production

━━━━━━━━ × 100 (%), 90% of theoretical production per second

○, 90 ~ 80% is evaluated as △.

· Appearance: Appearance of lateral streaks in knitted products is visually observed. If no streaks occur at all, it is evaluated as △.

· Dyeing workability: The dyed state of the knitted product is visually observed. If the dyed state is good, it is evaluated as ◯, and if it is normal, it is evaluated as △.

· Product dryability: After finishing the knitted product, the curled state of the edges is visually observed. If the edges are not curled at all, it is evaluated as △.

· Product folding phenomenon: When wrinkles or folding marks of the knitted product are observed with naked eyes, no wrinkle or folding marks are observed, and △ is evaluated as little.

· Product softness: When the sensation is evaluated and the touch is very soft, it is evaluated as × if it is not soft.

Stretchability: When the stretchability of the knitted product is very good, it is evaluated as?, And when it is normal, it is evaluated as?.

· Heavy feeling: Evaluate sensation ○ if feeling lightly, × if feeling heavily.

The present invention relates to a polyamide-based three-fineness air jet produced by a single production process in a manufacturing apparatus in which an air jet having an appearance and feel of a spinning yarn is manufactured in a uniform manner, and the polyurethane elastic yarn and the polyurethane- It does not cause any selvge curl or folding phenomenon, and it provides a ring-shaped lettering with excellent appearance and feel of the spun yarn product and excellent stretchability.

The ring letter can be utilized as a fabric of casual clothes and sports clothes.

Claims (2)

The core yarn and the effect yarn are respectively 8 to 12% and 22 to 28%, respectively, of the polyamide filament yarn having a single yarn fineness of 0.3 to 1.0 denier and a total fineness of 40 to 70 denier, to supply an air jet device by rock horn seomgyo the air pressure of 7 ~ 9kg / cm ² the air jet is that the air jets in the next manufactured construction used with the construction and polyurethane elastic yarns prepared by circular knit (circular knitting) ≪ / RTI > The method of claim 1, wherein the ring letter is pre-set to 180-190 占 폚 before dyeing.