KR19980083576A - Method for producing polyester microfiber fabric - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a method for producing a polyester microfiber fabric mainly used for clothing.

2. The technical problem to be solved by the invention

The present invention provides a method for producing a polyester microfiber fabric having excellent surface feel and bulkiness and without defects such as streaky and dyed tea on a final fabric.

3. Summary of Solution to Invention

[A] A polyester microfiber manufactured by covering the core yarn, which is a highly shrinkable polyester yarn, with an effect yarn which is an extract type polyester composite yarn with a single yarn fineness of 0.01 to 0.5 denier after extraction of the [B] extract component After the fabric is prepared using warp and / or weft, the fabric is refined, shrinked and micronized in a rotary washer with aqueous sodium hydroxide solution.

4. Important uses of the invention

The polyester microfiber fabric of the present invention is mainly used for clothing.

Description

Method for producing polyester microfiber fabric

The present invention relates to a method for producing a polyester microfiber fabric having excellent surface feel and bulkiness and without defects such as dyeing difference and streaky on a fabric by a simplified processing process.

In order to manufacture a fabric having excellent surface feel and bulky feeling, until now, a composite microfiber is formed by alternately arranging a fiber-forming polyester resin and a polyamide resin to produce a split microfiber, and then manufactured a split microfiber alone or a split type. It has been used as a warp yarn or a weft yarn.

After fabricating the fabric using the microfibers manufactured as such as warp or weft yarns, the split type yarns are divided in the refining process to make the warp or weft yarns extremely fine, and then the fabrics having excellent touch and bulkiness are processed through the normal processing process. I have been manufacturing.

However, in this method, since the split type micro-fabrication is a composite spinning of two-component polymers having different compatibility, there is a problem in that the dyeability difference between the two components occurs after the splitting. In order to solve this problem, two dyeing processes are complicated and costly.

In addition, if the separation caused by the air entanglement treatment or poor division in the refining process is a lot of streaky (Streaky) is generated a minimum of the refining process and the continuous reduction process to minimize this phenomenon. As a result, there is a problem in that the fabrication process is complicated. These problems are more serious in the case of the use of the split type micro-fabrication in which the high shrinkage yarn and the split-type microfibers are air-entangled than in the case of the use of the split type micro-fabrication in which only the split microfiber is entangled.

The present invention solves the problems of the prior art, the surface of the fabric and the bulky feeling is excellent, and a simplified processing process for the polyester micro-fabric fabric without defects such as streaky and dyed tea on the final fabric To provide a method for manufacturing.

1 is a schematic view of the manufacturing process of polyester microfiber used as warp and / or weft of the fabric of the present invention.

In Fig. 1, 1 is a core yarn, a highly shrinkable polyester yarn wound bobbin, 2 is a first feed roller, 3 is an effect yarn winding spool, 4 is a hollow spindle, 5 is a second feed roller, 6 is a polyester. Microfiber winding bobbin, 7 is a yarn guide.

2 is a cross-sectional view of the polyester microfabrication of the present invention in a state before the extraction component is extracted.

3 is a cross-sectional view of the polyester micro-fabrication of the present invention in the state of extracting the extract component.

2 and 3, A is an extract component and B is a fiber forming component.

4 is an enlarged cross-sectional picture of the polyester micro-fabrication of the present invention.

5 is an enlarged photograph of the surface of the fabric using the polyester micro-fabrication of the present invention as a weft.

The present invention relates to a method for producing a polyester microfiber fabric having excellent surface feel and bulkiness and without defects such as dyeing difference and streaky on a fabric by a simplified processing process.

Specifically, [A] core shrink, a highly shrinkable polyester yarn having a non-shrinkage ratio (100 ° C × 15 minutes) of 20 to 40%, consists of [B] fiber forming component and extracting component. Is a 0.01-0.5 denier and is an extractable polyester composite yarn processed by flammability, and fabrics are manufactured by using a polyester microfiber fabric manufactured by covering under the conditions of the formula (I) below as a warp and / or weft yarn when weaving. Thereafter, the present invention relates to a method for producing a polyester microfiber fabric, which is characterized in that it is refined, shrunk and made fine in a rotary washer having an aqueous solution of caustic soda. Total thread fineness ≤ Covering density per meter (T / M) ≤ Total thread fineness × 10 (Ⅰ)

Hereinafter, the present invention will be described in more detail.

First, in the present invention, polyester micro-fabrication used as warp and / or weft yarn is [A] single yarn fineness of 1.5 ~ 4 deniers and non-shrinkage (100 ℃ × 15 minutes) 20 ~ 40% of high shrinkage polyester yarn Used as a core yarn, it is composed of [B] fiber forming component and extraction component, and the single yarn fineness after extraction of the extraction component is 0.01 ~ 0.5 denier and the non-shrinkage rate (100 ℃ × 15 minutes) is 13 ~ 15% The processed yarn which stretched the type polyester composite yarn was used as an effect yarn, and it manufactures by covering the core yarn with the said effect yarn.

Extractive composite yarn used as an effect yarn in the present invention is used as a copolyester with the addition of metal sulfonate and polyalkylene glycol as an extraction component as a specific manufacturing method 100 parts by weight of dimethyl terephthalate, 5-sodium dimethyl isophthalate 7.6 parts by weight, 40 parts by weight of ethylene glycol and 0.06 parts by weight of zinc acetate were placed in an autoclave and subjected to a transesterification reaction with distillation of methanol produced at 150 to 230 ° C. After the addition of 0.02 parts by weight and phosphoric acid, the reaction is carried out in a vacuum of about 1 mmHg or less for about 3 hours while the temperature is raised to 230 to 280 ° C, and then the polymer is discharged and cut.

An extractable polyester composite yarn is prepared through the composite spinning cap using the extracted component thus prepared and ordinary polyethylene terephthalate having an intrinsic viscosity of 0.65 as a fiber forming component. At this time, the fiber-forming component complex spinning with the extraction component is not limited to polyethylene terephthalate.

The high shrinkage polyester yarn used as the core yarn in the present invention is prepared by a conventional yarn manufacturing method, but a copolymer of 2,2-dimethyl-1,3-propanediol 2,2- (dimethyl-1,3-propandiol) The ester could be expected to have an excellent effect on shrinkage.

In addition, the single yarn fineness is preferably 1.3 to 4 denier in order to provide flexibility and ductility. If it is less than 1.3 denier, the drape property is insufficient, and if it is more than 4 denier, it lacks flexibility and causes color unevenness due to dyeing of deep color compared to microfiber after extraction. In addition, if the non-shrinkage ratio is less than 20%, the sufficient shrinkage effect cannot be expected, resulting in poor sublime feeling, and if the non-shrinkage ratio exceeds 40%, there is a problem of increased after-feel and excessive tear strength due to excessive fabric shrinkage. .

The extractive composite yarn used in the present invention may be either an eccentric separation type, a melt polydivision type or a sea island type.

Next will be described in detail the manufacturing method of the polyester micro-fabrication used as warp and / or weft yarn in the present invention through the drawings.

First, the extraction polyester composite yarn is stretched using a flammable treatment apparatus, and then wound around the effect yarn winding spool 3. At this time, the flammable conditions are prepared under ordinary flammable conditions. The flammable device may be any of a spindle type, a disc type and a belt type.

A highly shrinkable polyester yarn having a non-shrinkage ratio of 20 to 40% is transferred from its winding bobbin (1) to the first feed roller (2) and through the hollow spindle (4) of the effect yarn winding spool (2). 5) to the core yarn, and at the same time, the extractable polyester composite yarn wound up in the effect yarn winding spool (3), which was previously combusted and supplied to the second feed roller (5) from the winding spool (3). do.

At this time, since the effect yarn winding spool 3 is rotated by a separate driving device, the effect yarn wraps the core yarn in the section from the effect yarn winding spool 3 to the second supply roller 5 (hereinafter referred to as covering). ) Is produced to produce a polyester microfiber.

The produced polyester microfiber is wound around the take-up bobbin 6. In the covering step, the density of the effect yarn per 1 m of the processed yarn, that is, the covering density (hereinafter referred to as T / M) is preferably set in a range of 1 to 10 times the total fineness of the polyester microfiber. If the covering density (T / M) is less than the total yarn fineness, the workability is poor and the effector does not sufficiently wrap the core yarn, resulting in streaky on the final fabric.

On the other hand, when the covering density (T / M) exceeds 10 times the total yarn fineness, this shrinkage effect and bulkiness are not sufficient.

After the fabric is manufactured using the polyester microfiber fabric prepared by the method described above as a warp and / or weft, the warp and / or extract is extracted from a rotary washer in which a caustic soda aqueous solution is stored. The weft yarn is microfiberized, followed by preheating, buffing, dyeing and final heat treatment under normal processing conditions to produce polyester microfiber fabric processed paper.

In the present invention, rotary washer process conditions are as follows.

The caustic soda solution having a caustic soda concentration of 0.5 to 1% and the woven fabric were put into a rotary washer and treated for 20 minutes at a temperature of 120 ° C. or higher and a pressure of 2 kg / cm 2 to refine and shrink the fabric. And micronization occur simultaneously. As a result, the continuous weight reduction step can be omitted, thereby simplifying the machining step. Here, the continuous reduction process means a method of reducing the cloth while passing the fabric at a constant linear velocity into the bath in which the caustic soda aqueous solution is stored.

The processed paper thus prepared has excellent surface feel and bulkiness, and there are no defects such as difference in dyeability and streaky.

The effect is that the highly shrinkable polyester, which is the core yarn of the polyester microfiber of the present invention, is wrapped by the extraction type microfine composite yarn, which is the effect yarn, so that it does not appear to the outside, so that the dyeability difference and streaky defect between the two components do not occur, extraction It is determined that the extraction component is easily eluted because the extraction type microfine composite yarn containing the component is covered on the outer circumference of the core yarn. As a result, it is possible to omit the continuous reduction process that has been performed for miniaturization of conventional effects yarns. In addition, the extraction type micro-composite that is an effect yarn during the polyester micro-fabrication of the present invention can minimize the dyeing difference because both the extraction component and the fiber-forming component uses a polyester resin. In addition, the polyester micro-fabrication of the present invention can prevent streaks caused by the air entanglement because it does not go through the air entanglement process during the manufacturing process.

In this invention, a non-shrinkage rate is measured as follows.

Non-shrinkage rate (SR,%)

After measuring the original yarn length (ℓ ₀ ) and the treated yarn length (ℓ ₁ ) before processing the yarn for 15 minutes in boiling water at 100 ℃, substitute these measured values in the following equation to obtain the specific shrinkage ratio (SR). .

The following describes the present invention in more detail by way of examples and comparative examples. However, the present invention is not limited to the following examples.

Example 1

Co-polyester copolymerized with metal sulfonate and polyalkylene glycol was used as an extraction component, and polyethylene terephthalate having an intrinsic viscosity of 0.65 was used as a fiber forming component. An extractable polyester composite yarn of 130 denier / 48 filaments having a fineness of 0.2 denier is prepared. The extracted polyester composite yarn is stretched in a spindle-type combustor under conditions of a heat treatment temperature of 180 ° C., a heat treatment time of 0.45 sec, and a heat treatment overfeed rate of 0.5%.

On the other hand, a highly shrinkable polyester yarn of 50 denier / 25 filaments having a single yarn fineness of 2 denier is prepared from a copolymerized polyester resin copolymerized with 2,2-dimethyl-1,3-propanediol. The extractable polyester composite yarn, which has been combusted, is applied as an effect yarn, and the high shrinkable polyester yarn is supplied to the covering device as a core yarn to cover a covering density of 550 (T / M) per 1m of the processed yarn to make the polyester microfiber. Manufacture. Using the prepared polyester microfiber as a weft yarn, using a twisted yarn twisted polyester 1,200T / M 75 denier / 36 filament twisted yarn as a warp yarn 5 pieces of total weft cover factor of 28.4 Weaving

The woven fabric was treated in a rotary washer with a caustic soda concentration of 0.5% ows for 20 minutes at a temperature of 125 ° C. and a pressure of 2 kg / cm 2 to refine the squeezed, shrinked and extracted polyester composite yarn, and then Pre-heated fixation, buffing, dyeing and final heat treatment under the conditions to produce a processed paper. Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

Example 2

Co-polyester copolymerized with metal sulfonate and polyalkylene glycol was used as the extraction component, and polyethylene terephthalate having an intrinsic viscosity of 0.65 was used as the fiber-forming component. An extractable polyester composite yarn of 130 denier / 48 filaments having 0.05 denier is prepared. The extracted polyester composite yarn is stretched in a spindle-type combustor under conditions of a heat treatment temperature of 180 ° C., a heat treatment time of 0.45 sec, and a heat treatment overfeed rate of 0.5%.

On the other hand, a highly shrinkable polyester yarn of 50 denier / 25 filaments having a single yarn fineness of 2 denier is prepared from a copolymerized polyester resin copolymerized with 2,2-dimethyl-1,3-propanediol. The extractable polyester composite yarn, which has been combusted, is applied as an effect yarn, and the high shrinkable polyester yarn is supplied to the covering device as a core yarn to cover a covering density of 550 (T / M) per 1m of the processed yarn to make the polyester microfiber. Manufacture. 5 sheets of total weft yarn with 28.4 total weft cover factor using the prepared polyester microfiber as a warp yarn and a twisted yarn of polyester 75 denier / 36 filament twisted yarn at 1,200T / M as a weft yarn Weaving

The woven fabric was treated in a rotary washer with a caustic soda concentration of 0.5% ows for 20 minutes at a temperature of 130 ° C. and a pressure of 2 kg / cm 2 to refine the squeezed, shrinked and extracted polyester composite yarn, and then Pre-heated fixation, buffing, dyeing and final heat treatment under the conditions to produce a processed paper. Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

Example 3

Co-polyester copolymerized with metal sulfonate and polyalkylene glycol was used as an extraction component, and polyethylene terephthalate having an intrinsic viscosity of 0.65 was used as a fiber forming component. An extractable polyester composite yarn of 250 denier / 96 filaments having a fineness of 0.2 denier is prepared. The extracted polyester composite yarn is stretched in a spindle-type combustor under conditions of a heat treatment temperature of 180 ° C., a heat treatment time of 0.45 sec, and a heat treatment overfeed rate of 0.5%.

On the other hand, a highly shrinkable polyester yarn of 50 denier / 25 filaments having a single yarn fineness of 2 denier is prepared from a copolymerized polyester resin copolymerized with 2,2-dimethyl-1,3-propanediol. The micro-fiber polyester is processed by covering the extractable polyester composite yarn with the effect yarn, and supplying the high shrinkable polyester yarn with the core yarn to the covering device so that the covering density is 350 (T / M) per 1m of the processed yarn. Manufacture. Using the prepared polyester microfibers as warp and weft yarns, weaving into 5 runners with a sum of the weft weft cover factors is 28.4.

The woven fabric was treated in a rotary washer with a caustic soda concentration of 1.0% ows at a temperature of 130 ° C. and a pressure of 2 kg / cm 2 for 22 minutes to refine the finely squeezed, shrinked and extracted polyester composite yarn, and then Pre-heated fixation, buffing, dyeing and final heat treatment under the conditions to produce a processed paper. Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

Comparative Example 1

Except for the effect yarns, a split type microfiber of 150 denier / 72 filaments composed of polyamide and polyester is stretched in a spindle type combustor under the conditions of 170 ℃ heat treatment time, 0.45 seconds heat treatment and 0.3% heat treatment overfeed. Then, processed paper is manufactured under the same conditions as in Example 1.

Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

Comparative Example 2

The processed paper is manufactured under the same conditions as in Example 1 except that the covering density per 1 m of the processed yarn is 100 T / M. Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

Comparative Example 3

The processed paper is manufactured under the same conditions as in Example 1 except that the covering density per 1 m of the processed yarn is 1,900 T / M. Table 1 shows the results of measuring the bulkiness, fabric appearance and surface feel of the manufactured paper.

[Table 1] Measurement results of processed paper properties

The polyester microfiber used as the warp and / or weft in the present invention is wrapped by an extract type microfine composite yarn in which the high shrinkable polyester yarn, the core yarn, is an effect yarn, and does not appear to the outside.

As a result, there are no dyeing differences or streaky defects that may occur between the core yarn and the effect yarn. In addition, the effect ingredient extract can be easily extracted in the post-processing process can simplify the post-processing process. In other words, the rotary washer can be refined, shrunk and micronized at the same time, so that the continuous reduction step can be omitted. In addition, the extraction type microfine composite yarn, which is an effect yarn during the polyester microfabrication used as the warp and / or weft yarn in the present invention, can use a polyester-based resin for both the extraction component and the fiber forming component, thereby preventing the dyeing difference due to the difference in resin type. In the manufacturing process of polyester microfiber, there is no air entanglement process, which can prevent streaks caused by air entanglement.

Therefore, the polyester microfiber fabric of the present invention can produce a fabric processed paper not only has excellent surface feel and bulky feeling, but also defects such as difference in dyeability and streaky.

Claims (10)

[A] Covering core yarn, which is a highly shrinkable polyester yarn, with [B] fiber forming component and extracting component, effect yarn of extractable polyester composite yarn with 0.01 ~ 0.5 denier and flammability after extraction Polyester microfabrication fabricated by using a microfiber fabric as a warp and / or weft yarn, and then weaving, weaving and squeezing the woven fabric in a rotary washer stored in a solution of caustic soda Process for the manufacture of processed yarn fabrics. The method of claim 1 wherein the fabric treated in the rotary washer is subsequently preheated, buffed, dyed and finally heat treated. The method for producing a polyester microfabricated fabric according to claim 1, wherein the concentration of caustic soda solution in the rotary washer is 0.5 to 1%. The method for producing a polyester microfiber fabric according to claim 1, wherein the non-shrinkage ratio (100 占 폚 x 15 minutes) of the highly shrinkable polyester yarn which is the core yarn is 20 to 40%. The method for producing a polyester microfiber fabric according to claim 1, wherein the core yarn is covered by the effect yarn under the condition of the formula (I). Total thread fineness ≤ Covering density per meter (T / M) ≤ Total thread fineness × 10 (Ⅰ) The method for producing a polyester microfiber fabric according to claim 1, wherein the fiber forming component of the effect yarn is polyethylene terephthalate. The method for producing a polyester microfabricated fabric according to claim 1, wherein the extract component of the effect yarn is a copolymerized polyester obtained by copolymerizing a metal sulfonate and a polyalkalen glycol. The method for producing a polyester microfabricated fabric according to claim 1, wherein the core yarn is a copolymerized polyester obtained by copolymerizing 2,2-dimethyl-1,3-propanediol. The method for producing a polyester microfabricated fabric according to claim 1, wherein the extractable polyester composite yarn is an eccentric separation type, a melt polydivision type, or an island-in-sea type. The method for producing a polyester microfiber fabric according to claim 1, wherein the fineness of the core yarn is 1.3 to 4 denier.