KR20170000887A - Excellent bulky property and Heat Insulation Polyester composite yarn and Method Preparing Same - Google Patents

Abstract

Provided are polyester composite yarn having excellent bulky and heat insulation properties and a method of manufacturing the same. The method of manufacturing polyester composite yarn includes the steps of: supplying high-contraction polyester yarn as core yarn and hollow partial-oriented yarn as effect yarn; taut-annealing the core yarn and the effect yarn at the same time; hot-stretching the core yarn and the effect yarn with two heat rollers; noncontact-annealing the hot-stretched core yarn and effect yarn on a heat plate; interlacing the core yarn and the effect yarn through air interlacing to produce composite yarn; and winding the composite yarn.

Description

Technical Field [0001] The present invention relates to a polyester composite yarn excellent in volume and warmth,

The present invention relates to a polyester composite yarn and a method for producing the polyester composite yarn, and more particularly, to a polyester composite yarn excellent in volume and warmth, which is improved in volume and warmth by using an effect yarn having a hollow portion and a partially drawn yarn, will be.

Composite yarns of two or more yarns have been developed with a wide range of efforts to combine the advantages of synthetic fibers and the advantages of spinning yarns into one yarn.

Conventionally, a composite yarn was manufactured by simply folding filaments of synthetic fibers and spun yarns of natural fibers. However, many yarn fabrication techniques have been developed to meet the needs of the consumer and the development of folding technology.

In particular, polyester composite yarns have been developed in many polyester composite yarns capable of adding various functions to the basic excellent physical properties of the polyester.

Conventional polyester composite yarns are widely used to manufacture a composite yarn having a bulkiness due to a difference in heat shrinkage between two yarns by producing a partially oriented yarn (Partially Oriented Yarn, POY) and a drawn yarn by air entanglement with each other In order to obtain a unique surface effect of the polyester composite yarn, there has been known a method of producing a composite yarn by using polyester fibers produced by incorporating inorganic particles into the yarns or by using natural fibers such as acetate and rayon .

Korean Patent Laid-Open No. 2001-0063955 discloses a polyester / acetate composite yarn produced by entangling an acetate yarn having a fineness of 50 to 100 denier and a polyester heterogeneous yarn. The composite yarn of the present invention is characterized in that the natural fiber, acetate, is used as the effect yarn, and the ordinary polyester fiber is used for the examination to have both advantages of the natural fiber and the synthetic fiber. However, Problems such as scintillation, uneven dyeing of the effect yarns and judging, and the problem of poor stretchability were found.

Korean Patent Laid-Open Publication No. 2006-78217, Japanese Patent Application Laid-Open No. 1025636 and Japanese Patent Laid-Open No. 11181643 disclose a method for producing a polyamide-based composite yarn. Among them, Korean Patent Laid-Open Publication No. 2006-78217 relates to a method for producing a composite yarn made of two types of yarns, in detail, using an original nylon FDY (Fully Drawn Yarn) as an examination, By using nylon POY (Partially Oriented Yarn), it is described that it provides a natural appearance such as natural fibers due to original nylon, and a composite yarn excellent in sweat-absorbing quick-drying property and soft feeling due to nylon in the section. However, the above method has excellent bulkiness and touchability, but can not expect a natural feel or color development due to the use of synthetic fibers.

Moreover, the conventional polyester composite yarn can exhibit bulky characteristics as the shrinkable yarn filament yarn, but the shrink yarn filament yarn excellent in the warming property is not developed sufficiently.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a polyester composite yarn having excellent volume feeling and excellent warmth through a difference in shrinkage ratio, The purpose is to provide.

It is another object of the present invention to provide a polyester composite yarn excellent in volume and warmth, which is improved in heat retention by using a hollow fiber as an effective yarn.

The present invention relates to a method for producing polyester yarn, which comprises: a yarn feeding step of feeding a high-shrink polyester yarn by examination, a polyester hollow yarn partially extending yarn to an effect yarn; A suit heat treatment step of subjecting the examination and the effect yarn to a formal heat treatment at the same time; A contact heat treatment step of stretching and heat-treating the screen and the effect yarn through two heat rollers; A non-contact heat treatment step of heat-treating the heat treatment and the effect yarn heat-treated in the contact heat treatment step; The present invention provides a method for manufacturing polyester composite yarn excellent in volume feeling and warmth, characterized by comprising an interlacing step of folding the above-mentioned examination yarns and effect yarns through air entanglement, and a winding step of winding entangled composite yarns.

Also, the present invention provides a method for producing a polyester composite yarn excellent in volume and warmth, wherein the void ratio of the yarn is 15 to 30%.

The present invention also provides a process for producing a polyester composite yarn excellent in volume feeling and warmth, wherein the difference in shrinkage ratio between the judging after the corrective heat treatment step and the effect yarn is 5 to 20%.

Also disclosed is a polyester composite yarn excellent in volume and warmth, which is produced by the above-described production method.

The polyester composite yarn excellent in volume feeling and warmth according to the present invention as described above has the effect of improving the volume feeling by using the core of the core by the examination and by using the polyester partly drawn yarn as the effective yarn.

In addition, the effect yarn has an effect of producing a fabric having a high hollow ratio and excellent in warmth.

Further, it has an effect of being applicable to clothes and various kinds of textile products with excellent volume feeling and warmth.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for producing a polyester composite yarn according to the present invention.
Fig. 2 is a process schematic diagram of a polyester composite yarn according to the present invention. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

As used herein, the terms " about, " " substantially, " " etc. ", when used to refer to a manufacturing or material tolerance inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

FIG. 1 is a process diagram of a method for producing a polyester composite yarn according to the present invention, and FIG. 2 is a process diagram of a polyester composite yarn according to the present invention.

As shown in FIG. 1, the polyester composite yarn excellent in volume feeling and warmth according to the present invention is manufactured including a yarn feeding step, a dressing heat treatment step, a contact heat treatment step, a non-contact heat treatment step, an entanglement step and a winding step.

The yarn feeding step is a step of feeding a high-shrink polyester yarn to a yarn drawing machine 100 and a polyester hollow yarn drawing yarn to an effect yarn 200. Each yarn for the examination and effect yarns is prepared in advance on a winding roller Can supply.

Alternatively, the polyester composite yarn of the present invention may be manufactured by further including a spinning step of spinning the yarn and the yarn before the feeding step, respectively.

In the case of further including the spinning step, the manufacturing process can be simplified and the economical efficiency can be improved by unifying the process.

The high shrinkage polyester yarns used in the above screening are produced by reacting an acid component (DMT or TPA) or a diol component (EG) used as a base raw material in a conventional polyester production process with phthalic acid acidic components such as phthalic acid (PA) and isophthalic acid (IPA), and copolymerization products obtained by copolymerizing diol components such as propanediol, butanediol, cyclohexanediol, bisphenol derivative and neopentyl glycol It can be produced using polyester.

The effect yarns may be made of polyester, which is a polyester hollow partly stretched yarn.

It is preferable that the hollow fiber yarn has a hollow ratio of 15 to 30% for the warmth, and a semi-dull or full dull polyester hollow yarn can be used for natural luster.

The dressing heat treatment step can be suitably heat-treated using a heat treatment furnace heat roller or a heat plate which is carried out under the minimum tension required for the fairing processability.

As shown in FIG. 2, the dressing heat treatment step of the present invention is a step of performing a dressing heat treatment (10) at the same time as the examination and effecting, as shown in FIG. 2, and the examination and effect yarns are heat treated at 80 to 160 ° C to shrink the examination and effect yarns.

It is preferable that the shrinkage ratio is 5% or more, more preferably 8% or more after the heat treatment step.

The effect yarn preferably has a shrinkage ratio of less than 5%, more preferably less than 3% after the suit heat treatment step.

The greater the difference in shrinkage ratio between the screening and the effect yarn is, the better the sense of volume is. As a result, it is preferable that the shrinkage difference difference between the screening and the effect yarn after the dressing heat treatment step is 5 to 20%.

If the difference in shrinkage ratio between the examination and effect yarns is less than 5%, the volume feeling may be lowered. If the difference in shrinkage percentage exceeds 20%, the defective ratio may be increased in the composite yarn manufacturing process. Would be preferable.

The contact heat treatment step is a step of drawing and effecting the heat treatment through two heat rollers (30), and the heat treatment and the effect yarn are subjected to a contact heat treatment step through one heat roller as shown in FIG. 2 And two heat rollers can be used to carry out the contact heat treatment step for the inspection and the effect yarn, respectively.

The temperature of the heat roller 30 is preferably heat-treated at a temperature 15 to 80 ° C higher than the glass transition temperature (Tg) of the polyester used as a screening and effect yarn. The glass transition temperature (Tg) But the temperature of the heat roller 30 may be about 85 to 160 ° C at about 70 to 80 ° C.

The non-contact heat treatment step is a step of performing a heat treatment on a heat treatment and an effect yarn heat-treated in the contact heat treatment step in a heat plate (50).

The temperature of the heat plate 50 is preferably heat-treated at a temperature 20 to 80 ° C higher than the crystallization temperature (Tc) of the polyester used for examination and effect, and the crystallization temperature (Tc) of the polyester also varies depending on the manufacturer But the temperature of the heat plate may be approximately 140 to 280 ° C at approximately 120 to 200 ° C.

The temperature of the heat roller 30 and the heat plate 50 should be adjusted according to the polyester used.

The intermingling step is a step of interlacing the heat-treated effect yarn and the inspection yarn through air entanglement, and the composite yarn can be manufactured by compounding the effect yarn with the effect yarn through a general air entangling device (70).

The winding step may be a step of winding the entangled composite yarn through the winding roller 90 or the like as shown in Fig.

The polyester composite yarn excellent in volume and warmth of the present invention can be produced through the above-described production method.

The polyester composite yarn excellent in volume and warmth of the present invention is suitable for clothing due to excellent volume feeling and warmth, and can be used in various textile products.

Hereinafter, embodiments of the method for producing a polyester composite yarn having excellent volume feeling and warmth according to the present invention will be described, but the present invention is not limited to the examples.

Example  1 to 4

As shown in FIG. 2, after the heat treatment was performed at a stretching ratio of 1.006 times at a temperature of 100 to 120 ° C as shown in FIG. 2, the heat treatment was carried out using a heat roller (90 to 110 ° C) and a heat plate (180 to 220 ° C), and the heat-treated effect yarn and the yarn were wound together by air entanglement and wound up to obtain a volume Ester complex yarn.

The manufacturing conditions for the inspection and effect yarns of Examples 1 to 4 are shown in Table 1.

Comparative Example  One

The polyester composite yarn was produced by the same procedure as in Example 1 except that the polyester yarn of general polyester yarn was examined and the hollow polyester yarn yarn was used as an effective yarn.

Comparative Example  2

A polyester composite yarn was prepared using the partially drawn polyester yarn as an effect yarn.

Comparative Example  3

The polyester composite yarn was produced in the same manner as in Comparative Example 1 except that the yarn was subjected to relaxation heat treatment without effecting the heat treatment.

I extended the examination and interfered with the effect.

Table 1 shows the manufacturing conditions for the inspection and effect yarns of Comparative Examples 1 to 3.

◈ Evaluation of physical properties of examples and comparative examples

1. Property evaluation method

* Shrinkage Difference: The shrinkage difference is obtained by the following equation due to the difference in shrinkage ratio between the examination and effect shrinkage.

Contraction difference = number of judgments (%) - exports rate of effect companies (%)

* Fairness assessment: grade 1 production / overall yield * 100 = yield (by weight)

* Thermal insulation and post-mortem evaluation: Relative sensory evaluation by 5 experts

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Effectiveness
(Hollow ratio%) 15 20 25 30 0 0 0 judge
(% Shrinkage) 15 15 15 15 8 15 8 Effectiveness
(% Shrinkage) 0 0 0 0 0 0 -3 Apostle Examination, effect, simultaneous suit heat treatment Examination, effect, simultaneous suit heat treatment Examination, effect, simultaneous suit heat treatment Examination, effect, simultaneous suit heat treatment Examination, effect, simultaneous suit heat treatment Examination, effect, simultaneous suit heat treatment Effect relaxation heat treatment
Examination Combination Shrinkage difference (%) 15 15 15 15 8 15 11 Thermal insulation
(score) 6 7 8 8.5 4 5 5 Siegeability (%) 94 96 96 85 94 95 93 Postgraph ○ ~ ◎ ○ ~ ◎ ◎ ◎ △ - ○ ○ ○

As shown in Table 1, it can be seen that Examples 1 to 4, which are polyester complex sands having excellent volumizing feeling and warmth of the present invention, are superior in volume feeling with similar or larger shrinkage differences than Comparative Examples 1 to 3, Which are superior to Comparative Examples 1 to 3, Examples 1 to 4 of the polyester complex conjugates of the present invention are excellent in both volume and warmth, and can be used as various fiber materials.

DESCRIPTION OF THE RELATED ART [0002]
100: Screening 200: Effectiveness
10: Suit heat treatment 30: Heat roller
50: heat plate 70: interlocking device
90: take-up roller

Claims (4)

A supply step of supplying the polyester hollow yarn partially drawn yarn to the yarn by the examination of the high-shrinkage polyester yarn;
A suit heat treatment step of subjecting the examination and the effect yarn to a formal heat treatment at the same time;
A contact heat treatment step of stretching and heat-treating the screen and the effect yarn through two heat rollers;
A non-contact heat treatment step of heat-treating the heat treatment and the effect yarn heat-treated in the contact heat treatment step;
An interlacing step of concatenating the examination and the effect yarn through air entanglement and
And a winding step of winding the entangled composite yarn, wherein the composite yarn has an excellent volume feeling and warmth.
The method according to claim 1,
Wherein the hollow fibers have a hollow ratio of 15 to 30%.
The method according to claim 1,
Wherein the difference in shrinkage ratio between the judging after the corrective heat treatment step and the effect yarn is 5 to 20%.
A polyester composite yarn excellent in volume and warmth, which is produced by the production method of any one of claims 1 to 3.

Images