KR101359587B1 - Core-sheath type polyester composite yarn with softness and excellent drapery - Google Patents

Abstract

Core-sheath type polyester composite yarn having softness and excellent drapery of the present invention is manufactured by complex radiation using, as a core component, a polyester resin copolymerized with 0.1-10 wt% of barium sulfate, and using, as a sheath component, a polyester resin copolymerized with 0.1-5 wt% of polyethylene glycol having molecular weight in a range of 10,000-20,000. The present invention is formed with the core-sheath type composite material in a sheath-core structure, and in order to provide softness like rayon and hygroscopicity, uses, as a sheath component, a polyester resin copolymerized with 0.1-5 wt% of polyethylene glycol having molecular weight in a range of 10,000-20,000, and uses, as a core component, a polyester resin copolymerized with 0.1-10 wt% of barium sulfate. The barium sulfate is slurrified and is added after esterification, and then undergone condensation polymerization. It is desirable that the core-sheath type polyester composite yarn of the present invention has 30/70-70/30 of a weight ratio of core over sheath.

Description

 Core-Sheath Type Polyester Composite Yarn with Softness and Excellent Drapery}

The present invention relates to a polyester composite fiber material having properties similar to rayon, and more particularly, to a deep sheath polyester composite fiber material having excellent drape due to soft touch, hygroscopicity and high specific gravity of rayon. will be.

In general, rayon has a high specific gravity of 1.51, so it has excellent drapey, soft touch due to the appearance of soft gloss by the cross section of the natural uneven structure by wet spinning and the fibril expression of the yarn surface by post-processing. Although the tensile strength is weak to 1.7 to 2.0 g / de, it is mainly used for lining material, blended material, non-clothing, or embroidery thread.

Republic of Korea Patent Application No. 2010-0039684 (Applicant: Woongjin Chemical) relates to a "polyester fiber composition excellent in touch and draping" and 0.1 to 10 wt% PEG content, 0.1 to 10 barium sulfate based on PEG molecular weight 1,000 to 20,000 Disclosed is a polyester fiber composition having a soft touch of rayon, excellent drape property, and a rayon intrinsic gloss effect, in which wt% and a particle diameter are 0.01 to 2.0 mu m. However, to make the microslit on the fiber surface in order to obtain a substantially soft touch, a PEG molecular weight of 10,000 or more should be used and the content should be 2% or more. In addition, in order to make a fabric material with excellent drape property, barium sulfate having a high specific gravity is added, and it is not practical to polymerize both at the same time in the polymerization process. Even if it is made, if barium sulfate enters more than 1%, it protrudes from the surface of the fiber and causes dyeing defects and process troubles in the spinning process.

Korean Patent Application No. 2006-0129230 (Applicant: Hyosung) "release cross-sectional polyester fiber and its manufacturing method" is 0.3 to 5 wt% metal sulfonate salt and 0.5 to 10 wt% polyoxyalkylene ether copolymer or mixture It is a polyester release cross section fiber having a degree of release of 2 or more and a non-shrinkage of 3% or less, and easily forms microcraters or microslits that are uniformly distributed by ordinary weight reduction processing, thereby providing high mold release properties, low shrinkage characteristics and fairness. Disclosed are polyester release cross-section fibers having good dyeing properties and the like. However, due to the aggregation of the metal salt compound in the polymerization process, the problem of trimming and dyeing problem occurs in the radial drawing process and there is a problem that the microslit formation is not easy.

Korea Patent Application No. 2005-0019424 (Applicant: Kolon) is a polyester composition for producing high-gloss yarns and high-gloss yarns produced therefrom is a polyester composition having a barium sulfate of 0.05 to 1wt% added, the average particle diameter of 0.01 ~ 3㎛ The present invention solves problems such as stretching unevenness and loop generation of the final product, and at the same time describes it as having excellent transparency and high gloss. However, there is a problem that it is difficult to express excellent drape property in barium sulfate 1wt% or less.

The present inventors have solved the problems of the prior art as described above, leading to the development of the deep sheath polyester composite fiber material of the present invention having soft touch, hygroscopicity, and excellent drape property by high specific gravity properties.

An object of the present invention is to provide a polyester composite fiber having a high softness and excellent drape, while using a high concentration of barium sulfate resin.

Another object of the present invention is to provide a polyester composite fiber that provides an excellent microslit effect in the weight loss process even with a small amount of polyethylene glycol.

These and other objects of the present invention can be achieved by the present invention which is described in detail below.

The soft and hand-draped polyester composite fiber of the present invention has a polyester resin in which 0.1-10% by weight of barium sulfate is copolymerized as a core component, and has a molecular weight of 10,000-200 as a sheath component. It is characterized in that 0.1 to 5% by weight of polyethylene glycol in the range of 20,000 is prepared by complex spinning using a copolymerized polyester resin.

The present invention, unlike the existing polyester, is composed of a sheath-core structure of the sheath-type composite material, to give a soft touch and hygroscopicity such as rayon, polyester as a super component As the polymer, a polyester polymer copolymerized with 0.1 to 5% by weight of polyethylene glycol having a molecular weight ranging from 10,000 to 20,000 is used, and a polyester resin copolymerized with 0.1 to 10% by weight of barium sulfate is used as a core component. Barium sulfate is slurried and then added after the esterification reaction to effect condensation polymerization.

The core sheath polyester composite fiber of the present invention preferably has a weight ratio of the core portion to the core portion in the range of 30/70 to 70/30.

Hereinafter, the present invention will be described in detail.

The sheath type polyester composite material according to the present invention exhibits soft surface touch and has excellent hygroscopicity and drape property. In addition, it is possible to maximize the micro slit effect of the yarn surface with a low polyethylene glycol content by forming a sheath core type of the sheath type structure. In addition, by using a barium sulfate-containing polyester resin as a core, barium sulfate protrudes to the surface of the yarn to solve problems such as appearance defects such as loops and trimming during the process.

The present invention relates to a polyester composite fiber material, to a deep sheath polyester composite fiber material having excellent draping property by soft touch, hygroscopicity, and high specific gravity properties such as rayon.

The soft and hand-draped polyester composite fiber of the present invention has a polyester resin in which 0.1-10% by weight of barium sulfate is copolymerized as a core component, and has a molecular weight of 10,000-200 as a sheath component. It is characterized in that 0.1 to 5% by weight of polyethylene glycol in the range of 20,000 is prepared by complex spinning using a copolymerized polyester resin.

The present invention, unlike the existing polyester, is composed of a sheath-core structure of the sheath-type composite material, to give a soft touch and hygroscopicity such as rayon, polyester as a super component As the polymer, a polyester polymer copolymerized with 0.1 to 5% by weight of polyethylene glycol having a molecular weight ranging from 10,000 to 20,000 is used, and a polyester resin copolymerized with 0.1 to 10% by weight of barium sulfate is used as a core component. Barium sulfate is slurried and then added after the esterification reaction to effect condensation polymerization.

The cardiac composite fiber of the present invention configured as described above exhibits soft surface touch and has excellent hygroscopicity and drape. In addition, the sheath-core type of the sheath-type structure can be formed to maximize the micro slit effect of the yarn surface with low polyethylene glycol content, and the barium sulfate protrudes into the yarn surface by deepening the polyester resin containing barium sulfate. It can solve appearance defects such as loops and trimming problems during the process.

The polyester in which the initial polyethylene glycol is copolymerized is formed on the yarn surface due to the high orientation of yarn manufacturing, and the polyethylene glycol having a high molecular weight falls off during the reduction of the post-process to form a microslit structure on the yarn surface. These microslit surface characteristics exhibit soft touch and hygroscopicity similar to rayon in knitted fabrics. In addition, polyester with deep barium sulfate added exhibits excellent drape property due to the mixing effect of high specific gravity ceramics.

In the present invention, a composite material having a polyester core sheath structure is manufactured by composite spinning in a sheath-core form.

The present invention relates to a myocardial composite material, but can also be produced in a sea island-type structure. In the island-in-the-sea structure, the core component is the island component and the component is the sea component. Such modification can be easily performed by those skilled in the art.

The core sheath polyester composite fiber of the present invention preferably has a weight ratio of the core portion to the core portion in the range of 30/70 to 70/30.

The invention can be better understood by the following examples, which are intended for the purpose of illustration of the invention and are not intended to be limiting or limiting by the appended claims.

Example  One

The core part is composed of a polyester resin copolymerized with 3% by weight of barium sulfate, and the weight ratio of the core part to the core part is 50/50, with a polyester resin copolymerized with 2% by weight of polyethylene glycol having a molecular weight of 20,000. Yarn was prepared by spinning in a spinning pack at 75De in 36 filament. The results of fairness and appearance inspection of yarn production, softness and drape of fabric after fabric production are shown in Table 1.

Example  2

The core part is composed of a polyester resin copolymerized with 5% by weight of barium sulfate, and the weight ratio of core part to the core part is 50/50, with a polyester resin copolymerized with 3% by weight of polyethylene glycol having a molecular weight of 20,000. Yarn was prepared by spinning in a spinning pack at 75De in 36 filament. The results of fairness and appearance inspection during yarn production, and softness and drape of fabric after fabric production are shown in Table 1.

Example  3

The core part is composed of a polyester resin copolymerized with 7% by weight of barium sulfate and the polyester resin copolymerized with 4% by weight of polyethylene glycol having a molecular weight of 20,000. The weight ratio of the core part to the core part is 50/50. Yarn was prepared by spinning in a composite spinning pack with 36 filaments in 75De. The results of fairness and appearance inspection of yarn production, softness and drape of fabric after fabric production are shown in Table 1.

Example  4

In Example 2, the core portion and the chord portion constituted the same amount of polyester resin, but instead of the seaweed-shaped circular cross section, the islands were prepared by spinning with filaments of 36 filaments at 75De with a seaweed-type ecchotype composite spinning pack. The results of fairness and appearance inspection of yarn production, softness and drape of fabric after fabric production are shown in Table 1.

Comparative Example  One

In Example 2, 5% by weight of barium sulfate was copolymerized in the same manner as the core, but the general polyester resin was not copolymerized with polyethylene glycol, and the weight ratio of core to core was 50/50. Yarn was prepared by spinning 36 filaments in 75De in a composite cardiac iris pack. Table 1 shows the results of processability and appearance inspection, and softness and drape of fabric after weaving.

Comparative Example  2

In Example 2, the polyester resin copolymerized with 3 wt% polyethyleneglycol was composed in the same manner, but the general polyester resin containing no barium sulfate was composed of the core, and the weight ratio of the core to the core was 50/50. Yarn was prepared by spinning 36 filaments in 75De in a composite cardiac iris pack. The results of fairness and appearance inspection of yarn production, softness and drape of fabric after fabric production are shown in Table 1.

Comparative Example  3

Yarn was prepared by spinning 3% by weight of a polyethylene resin copolymerized with polyethylene glycol in 75De in 75De in a spinning pack of the general type alone rather than a deep sheath type composite spinning pack. The results of fairness and appearance inspection of yarn production, softness and drape of fabric after fabric production are shown in Table 1.

Comparative Example  4

Yarn was prepared by spinning 5% by weight of a barium sulfate copolymerized polyester resin with 75 filaments at 75De in a general single type spinning pack instead of a deep sheath type composite spinning pack. The results of fairness and appearance inspection at the time of yarn production, softness and drape of the fabric after fabrication are shown in Table 1.

In the present invention, evaluation methods such as fairness, appearance, and performance are as follows.

* Evaluation of fairness: Grade 1 output / total output = yield (by weight)

* Appearance Evaluation: Visual Evaluation = 1 Loop / Yarn

* Softness and Drapery Evaluation: Five experts performed a sensory evaluation on the touch.

As shown in Table 1, the higher the content of polyethylene glycol in the copolymer polyether constituting the first part, the better the soft touch was expressed, and the drape property was improved as the content of the deep barium sulfate was increased. The vinegar-type composite materials of Examples 1 to 4 exhibited similar texture and properties as those of rayon with soft touch and drape. In Comparative Example 1, only 5% by weight of barium sulfate was added to the core part in the heart sheath structure, and in Comparative Example 2, only 3% by weight of polyethylene glycol was added to the beginning part.

Comparative Examples 1 and 2 obtained satisfactory results in terms of fairness and appearance as in Examples, but did not obtain good results in soft touch and drape, respectively.

In Comparative Examples 3 and 4, the comparison was made to the general single radiation type, not to the deep sheath type complex radiation type. The fairness was very poor in Comparative Examples 3 and 4, except for soft touch and drape. Particularly, in Comparative Example 4, due to the protrusion of the barium sulfate particles to the yarn surface, the trimming was increased in the spinning process, so that the yield was not good.

In order to efficiently obtain the micro slit expression characteristics of the polyester yarn surface polymerized with polyethylene glycol and the high specific gravity effect of barium sulfate, each polyester resin can be separated by a single-score type, rather than a single spinning type Much better fairness and soft touch and drape were obtained.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

The core component is a polyester resin copolymerized with 0.1-10% by weight of barium sulfate, and the polyester resin copolymerized with 0.1-5% by weight of polyethylene glycol having a molecular weight of 10,000-20,000 is used as the sheath component. A soft sheath and draped excellent core sheath polyester composite fiber, characterized in that it is produced by composite spinning.
According to claim 1, The poncho polyester composite fiber has a soft touch and draping excellent wick type polyester composite fiber, characterized in that the weight ratio of the core portion to the core portion in the range 30/70 to 70/30.
The core component is a polyester resin copolymerized with 0.1-10% by weight of barium sulfate, and the polyester resin copolymerized with 0.1-5% by weight of polyethylene glycol having a molecular weight of 10,000-20,000 is used as the sheath component. In the method of producing a composite fiber of the core sheath type composite composite by spun, the soft sensation and drape property of the vinegar comprising the step of adding the barium sulfate after the esterification of the polyester of the core component Method for producing type polyester composite fiber.