KR102546679B1 - Polybutylenesuccinate multifilament and Air texturing yarn for apparel or interior and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a biodegradable polybutylene succinate multifilament for clothing or interior use and, more specifically, to a polybutylene succinate multifilament that is biodegradable, is environmentally friendly, and has an excellent elastic recovery rate (%), thereby being suitably used for clothing or interior use, to an air texturing yarn using the same, and to a manufacturing method thereof.

Description

Polybutylenesuccinate multifilament and air texturing yarn for apparel or interior and manufacturing method thereof

The present invention relates to a biodegradable polybutylene succinate multifilament for clothing or interior use, an air texturing yarn using the same, and a method for manufacturing the same. It relates to polybutylene succinate multifilament that can be suitably used for industrial applications, air texturing yarn using the same, and a manufacturing method thereof.

Humans have been manufacturing clothes using natural fibers such as flax, wool, silk, and cotton since thousands of years ago, and even now, these natural fibers are in the spotlight as clothing materials.

In addition, since the industry has developed and it has been possible to manufacture artificial synthetic fibers from petroleum, various types of textiles and fabrics for clothing from polymers such as thermoplastic polymers such as polyester, nylon and polyurethane, or combinations thereof, etc. this is being produced.

In general, synthetic fibers have a lighter specific gravity than natural fibers, are resistant to friction, have excellent tensile strength, are not wrinkled well, have chemical resistance, and have excellent insect repellent properties. It is highly useful in that it can be used.

However, these characteristics rather hinder the natural decomposition of fibers, resulting in synthetic fibers remaining in landfills for hundreds of years or more, micronized fiber particles accumulating in the body of animals, or tangled fiber strands acting as snares to animals. This is causing serious environmental problems.

As a prior art, Korean Patent Registration No. 10-1175634 (2012. 08. 22.) discloses biodegradable polylactic acid high-strength fiber yarn, and Korean Patent Publication No. 10-2001-0086606 (2001. 09. 15.) discloses a method of manufacturing a fabric having excellent elasticity and good touch by combining spandex yarn and synthetic fiber material yarn in a separate complex process to impart bulkiness.

Polyurethane-based elastic fibers, which are used for clothing as synthetic fibers, have excellent elasticity and are used as covering yarns and core span yarns in stockings and women's underwear. It is widely used in stretch fabrics. However, the polyurethane-based elastic fiber is not biodegradable and thus has a large environmental load.

As various environmental regulations have been strengthened, cellulosic regenerated fibers obtained from natural raw materials (for example, regenerated fibers including lyocell, etc.), chitosan fibers, soybean fibers, Tencel, bamboo fibers, and polylactic acid obtained from corn ( Eco-friendly material fibers with excellent biodegradability, such as polylactic acid (PLA) fibers, are emerging.

Here, the PLA fiber has a structure similar to that of polyester in that it is a hydrophobic fiber in which -COO- groups are repeated. The PLA fiber has a low melting point (Tm) and a low glass transition temperature (Tg), so when used for clothing, it is subject to temperature restrictions in dyeing, heat treatment and ironing. In addition, the PLA has excellent biodegradability, but has high stiffness and low heat resistance, so it cannot be applied to clothing.

These biodegradable resins generally have a low melting point and low crystallinity, so they are disadvantageous to melt spinning and have poor fiber formation. However, only some of them are being developed as filament yarns, and even some of the filament yarns are low in strength and rigid, making it difficult to use them in the form of woven fabrics.

The present invention has been proposed to solve the above conventional problems, by manufacturing a multifilament for clothing or interior use using a biodegradable polybutylsuccinate polymer, so that the elastic recovery rate is excellent and the elasticity is good for clothing or interior Its purpose is to provide a polybutylsuccinate multifilament for clothing or interior that has excellent biodegradability and environmentally superior properties while providing a product for use, air texturing yarn manufactured using the same, and a manufacturing method thereof.

The polybutylenesuccinate (PBS) multifilament for clothing or interior use according to the present invention has an elastic recovery rate (%) of 75 to 95%, is biodegradable, and has a tensile strength of 1.0 to 4.5g. /d, preferably has a cut elongation of 20 to 150% and a total fineness of 20 to 700 denier, and the polybutylene succinate multifilament for clothing or interior use is plied in 2 to 6 sets for clothing Or it is preferably made of polybutylene succinate air texturing yarn for interior use.

In addition, the method for manufacturing a polybutylene succinate multifilament for clothing or interior use according to the present invention includes a first step of drying polybutylene succinate chips; a second step of preparing polybutylene succinate multifilaments by melt-spinning the chips dried in the first step; and a third step of winding the polybutylene succinate multifilament prepared in the second step, wherein the polybutylene succinate multifilament for clothing or interior use is partially drawn yarn (POY) or fully drawn yarn. (FDY), and in the first step, the drying temperature is 30 to 100 ° C. for 4 to 12 hours, and the melt index (MI) of the polybutylene succinate chip is 20 to 80 g / 10 minutes In the second step, the spinning speed is 3,000 to 5,000 m/min, and the temperature of the first godet roller in the second step is 70 ° C or less,

In the second step, the spinning temperature is preferably 150 to 200 °C.

Further, the method for manufacturing polybutylene succinate air texturing yarn (hereinafter referred to as ATY) for clothing or interior use according to the present invention includes a first step of drying polybutylene succinate chips; a second step of preparing polybutylene succinate multifilaments by melt-spinning the chips dried in the first step; A third step of winding the polybutylene succinate multifilament prepared in the second step; a fourth step of plying the polybutylene succinate multifilaments prepared in the third step and supplying them to an air texturing device; a fifth step of manufacturing air-textured yarn by air bridging the polybutylene succinate multifilaments supplied to the air-texturing device in step 4; and a sixth step of heat-treating the air-textured yarn manufactured in the fifth step while passing it through a heater, wherein in the fourth step, the plied yarn is 2 to 6, and the heat treatment temperature in the sixth step is 30 It is preferably ~ 100 ° C.

The PBS multifilament for clothing or interior use according to the present invention has an excellent elasticity recovery rate, so it provides a comfortable fit when used for clothing such as underwear, socks, sports clothing, etc., or for interior use such as blinds, curtains, partitions, sofas, etc. The air texturing yarn manufactured by the above shows excellent characteristics of heat retention and light weight due to increased bulkiness. In addition, the PBS multifilament and PBS ATY have an environmentally friendly effect that does not cause environmental pollution problems by being naturally decomposed in the ecosystem when discarded after use.

1 is a manufacturing apparatus 100 of a PBS multifilament 200 for clothing or interior use according to the present invention,
2 is an ATY manufacturing apparatus 300 for manufacturing a PBS ATY 250 for clothing or interior use according to the present invention.
Figure 3 is a SEM picture of the PBS ATY (250) for clothing or interior use according to the present invention.

In this application, terms such as "comprise", "have" or "have" are intended to indicate that there is a feature, number, step, component, part, or combination thereof described in the specification, but one or more other It should be understood that it does not preclude the possibility of addition or existence of features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Although the present invention has been described with reference to the examples shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other experimental examples are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Hereinafter, the PBS multifilament 200 for clothing or interior use and the PBS ATY 250 for clothing or interior use according to the present invention and their manufacturing method will be described in detail.

The PBS multifilament 200 for clothing or interior use according to the present invention has an elastic recovery rate of 75 to 95%, and has the advantage of providing a comfortable fit when used for clothing, and when used for interior use, the elasticity of the fabric and the elongation rate In addition to the advantage of increasing convenience during productization and molding, it is also biodegradable, which is environmentally beneficial. The PBS is a biodegradable aliphatic polyester having a repeating unit as shown in [Formula 1] below.

[Formula 1]

The PBS is used as a substitute for various plastics due to its biodegradability that is naturally decomposed into water and carbon dioxide by microorganisms such as Amcolatopsis strains or Penicillium strains, and PBS The range of applications is still expanding. The generally known application fields of PBS are diverse, such as food and cosmetic packaging films, plastic products processed into bags or boxes, or tableware or medical supplies, but most of them are limited to disposable products, etc., and clothing yet. It is difficult to find examples of applying PBS for interior or interior use.

The present invention manufactures PBS having excellent physical properties and biodegradable properties into PBS multifilament (200) and PBS ATY (250) having properties suitable for clothing or interior use, and intends to use them for clothing or interior use .

Multifilament in a general sense means a fiber bundle in which a plurality of monofilaments are combined, and in a narrow sense is interpreted as meaning a fiber in which a plurality of monofilaments are twisted and combined, but in the present invention, 'multifilament' refers to a plurality of monofilaments The term is used as a broad concept that includes not only single yarn fibers twisted together but also multiple monofilaments combined to form one bundle without artificially imparted twist.

The PBS multifilament 200 for clothing or interior use of the present invention is characterized in that its elastic recovery rate is 75 to 95%. Among the physical properties of the fiber, the property of the fiber to return to its original length after being stretched by an external force is called elasticity, and the elastic recovery rate (%) is the percentage of the recovered length relative to the stretched length as shown in (Equation 1) below indicated by (%).

The higher the elastic recovery rate (%), the better the elasticity, and since the elasticity of the fiber greatly affects the resilience, spindle resistance, resistance to deformation, or shape stability of the textile product, the elastic recovery rate ( %) has the advantage of being less wrinkled while wearing clothes and less deformation of clothes.

The PBS multifilament 200 for clothing or interior use of the present invention also preferably has strength of 1.0 to 4.5 g/d and elongation at break of 20 to 150%.

If the strength of the PBS multifilament 200 is less than 1.0 g/d, it is difficult to apply sufficient tension during the weaving process to manufacture fabric, resulting in poor workability. If the strength exceeds 4.5 g/d, the elasticity or flexibility of the fiber When applied to clothing, the wearability may deteriorate.

In addition, even if the elongation at break is less than 20%, the elasticity or flexibility of the fiber may deteriorate, resulting in poor wearing comfort when applied to clothing. there is.

In addition, the total fineness of the PBS multifilament 200 for clothing or interior use according to the present invention may be variously selected according to the use, and may be appropriately selected as needed within the range of 20 to 700 denier. . The PBS multifilament 200 having a low total fineness within the above range is suitable for application to thin and soft clothing, and the PBS multifilament 200 having a relatively high total fineness has a sense of volume and is suitable for application to warm clothing. suitable for

Hereinafter, a PBS multifilament 200 for clothing or interior use of the present invention, a PBS ATY 250 using the same, and a manufacturing method thereof will be described with reference to FIGS. 1 to 3.

The PBS multifilament 200 for clothing or interior of the present invention includes a first step of drying PBS chips; A second step of manufacturing a PBS multifilament 200 by melt-spinning the chips dried in the first step; and a third step of winding the PBS multifilament 200 prepared in the second step.

In the first step, drying of the PBS chip is preferably performed at a temperature of 30 to 100 °C for 4 to 12 hours. When the drying temperature is lower than the above range or the drying time is short, it is difficult to uniformly spin the PBS due to the moisture remaining in the chip, and when the drying temperature is higher than the above range or the drying time is long, discoloration of the PBS occurs. There is a risk of product quality being damaged.

The melt index (MI) of the PBS chip for manufacturing the PBS multifilament 200 according to the present invention is preferably 20 to 80 g/10 minutes for efficient melt spinning process. If the melt index is less than 20 g / 10 minutes, not only the spinnability is poor, but also the stretchability after spinning is poor, so it may be difficult to draw more than an appropriate magnification, and if the melt index exceeds 80 g / 10 minutes, after stretching Problems associated with strong degradation may occur.

When the drying of the PBS chip for melt spinning is completed in the first step, the PBS multifilament 200 is manufactured through the second and third steps, and the spinning temperature in the second step is 150 to 200 ° C. It is desirable to be If the spinning temperature is less than 150 ° C, melt extrusion becomes difficult, and if it exceeds 200 ° C, thermal decomposition of the polymer occurs, making it difficult to manufacture the PBS multifilament 200 having desired physical properties.

In addition, in the second step, the spinning speed of the PBS multifilament 200 is preferably 3,000 to 5,000 m/min, and the PBS multifilament 200 is partially drawn by adjusting the spinning speed within the above range. It can be manufactured in the form of Oriented Yarn (POY) or Fully Drawn Yarn (FDY). More specifically, when the PBS multifilament 200 is to be produced as a partially drawn yarn (POY), the spinning speed can be set to 3,000 to 4,000 m/min, and when the fully drawn yarn (FDY) is to be obtained In this case, the spinning speed can be set to exceed 4,000 m/min.

Hereinafter, FIG. 1 is a schematic diagram of an apparatus 100 for manufacturing a PBS multifilament 200 for clothing according to the present invention, and with reference to FIG. 1, an agent for manufacturing the PBS multifilament 200 for clothing according to the present invention Steps 2 and 3 will be described in more detail.

The PBS chip dried in the first step is discharged through the spinneret 10 in a molten state, and the multifilament discharged from the spinneret 10 is cooled in the cooling section 20, and then the oil supply guide 30 ) to give an emulsion.

Thereafter, the discharged multifilament is drawn out to the first godet roll 40, and after being heated by the first godet roll 40, between the first godet roll 40 and the second godet roll 50 It is stretched and heat-set in

In addition, after the stretching and heat setting, relaxation heat treatment is performed between the second godet roll 50 and the cold roll 60 using the heat of the second godet roll 50, and then the winding machine 80 By being wound by, the PBS multifilament 200 for clothing according to the present invention can be manufactured.

At this time, in order to make the relaxation heat treatment more efficient, a heat treatment device (not shown) using heated air or steam as a heat medium is used between the second godet roll 50 and the cold roll 60, or the third godet roll ( It is also possible to perform relaxation treatment in two steps by installing (not shown).

In addition, if necessary, by excluding the cold roll 60 and using a bridging nozzle (not shown) during the relaxation heat treatment, the cooling and tension gradient of the PBS multifilament 200 can be controlled by the bridging nozzle.

In the manufacturing method of the PBS multifilament 200 for clothing according to the present invention, the stretching temperature during stretching by the first godet roll 40 and the second godet roll 50 cuts the PBS multifilament 200. It is preferably maintained at 70 ° C. or less in order to stably manufacture without. In addition, in order to obtain an orientation effect of the internal structure of the PBS multifilament 200 according to stretching, it is preferable to maintain at least 10 °C higher than the glass transition temperature of PBS.

In addition, the heat setting and relaxation heat treatment temperature may be set to a desired heat shrinkage in the range of 30 to 100 ° C., but it is more preferable to set it to 50 to 90 ° C. in order to uniformly relieve residual strain formed by stretching.

Further, the spinning emulsion is given containing a leveling agent, an emulsifying agent, an antistatic agent and the like. Specifically, mineral oil such as liquid paraffin, fatty acid esters such as octyl palmitate, lauryl oleate, and isotridecyl stearate, dibasic acid diesters such as dioleyl adipate and dioctyl sebacate, and trimethylolpropanetrilau Polyhydric alcohol esters such as lactate and coconut oil, aliphatic sulfur-containing esters such as laurylthiodipropionate, polyoxyethylene oleyl ether, polyoxyethylene castor oil ether, polyoxyethylene nonylphenyl ether, trimethylolpropane trilaurate nonionic surfactants such as alkylsulfonates, metal salts such as alkyl phosphates or anionic surfactants such as amine salts, tetramethylene oxide/ethylene oxide copolymers such as dioctylsulfosuccinate sodium salts and alkanesulfonate sodium salts, Propylene oxide/ethylene oxide copolymers, nonionic surfactants, etc. can be listed, and each process of yarn weaving, warp arrangement, fabric manufacturing, in particular, formulations for improving the penetration of loom and heald during fabric manufacturing Hire. If necessary, a rust inhibitor, an antibacterial agent, an antioxidant, a penetrant, a surface tension lowering agent, a pre-phase viscosity lowering agent, an antiwear agent, and other modifiers may be used together.

When manufacturing the PBS multifilament 200 for clothing or interior use according to the present invention, the amount of emulsion attached to the total weight of the PBS multifilament 200 for clothing or interior use is 0.3 to 1.2% by weight, in terms of post-processing. desirable.

In the manufacturing method of the PBS multifilament 200 for clothing or interior use, the PBS multifilament 200 may be stretched in multiple steps. Preferably, after pre-stretching by applying a low draw ratio of about 1.01 to 1.08 times first, it is preferable to cold-stretch or hot-stretch twice so that a predetermined strength and elongation after break can be obtained.

In particular, when dimensional stability is required, it is preferable to add a relaxation treatment by applying a warm roller or the like following stretching. At this time, the total draw ratio varies depending on the spinning speed, but it is preferable to cold-stretch or hot-draw so that the unstretched yarn spun at a relatively low speed is 1.05 times or more.

As described above, the manufacturing method of the PBS multifilament 200 for clothing or interior use according to the present invention has been described, but in addition to the above, processing conditions in each process for manufacturing the PBS multifilament 200 is not particularly limited, and may be performed under known process conditions according to the production purpose of the PBS multifilament 200 for clothing or interior use.

The PBS multifilament 200 for clothing or interior use of the present invention may be applied to various clothing by itself, but may also be used in the form of processed yarn that has undergone a specific processing process, if necessary.

As an example, the PBS multifilament 200 for clothing or interior use may be used by plying several strands and processing it in the form of yarn, more preferably for clothing or interior having light weight, softness, warmth, etc. In order to provide a fiber for clothing, it can be used in the form of a PBS ATY (250) manufactured by plying the PBS multifilament (200) for clothing or interior use.

The PBS ATY (250) manufactured using the PBS multifilament 200 for clothing or interior use of the present invention is air-textured by plying 2 to 6 pairs of PBS multifilament 200 for clothing or interior use. can Here, the 2 sum means that two PBS multifilaments 200 for clothing or interior use are combined, and the 6 sum means that 6 PBS multifilaments 200 for clothing or interior use are combined.

As described above, when the PBS multifilament 200 for clothing is plied and subjected to air texturing, the fiber has a bulky structure as shown in FIG. be able to

The PBS ATY 250 according to the present invention includes a first step of drying a PBS chip; A second step of manufacturing PBS multifilament 200 for clothing or interior use by melt-spinning the chips dried in the first step; A third step of winding the PBS multifilament 200 for clothes or interiors manufactured in the second step; a fourth step of plying the PBS multifilaments 200 for clothing or interiors manufactured in the third step and supplying them to an air texturing device; A fifth step of manufacturing PBS ATY (250) by air bridging the PBS multifilaments (200) for clothing or interiors supplied together with the air texturing device in step (4); and a sixth step of heat-treating the PBS ATY 250 prepared in the fifth step while passing through a heater.

The number of PBS multifilaments 200 for clothing or interior use plied in the fourth step may be arbitrarily selected as needed, but is preferably 2 to 6 so as to be suitable for use as general clothing or interior textiles. .

2 attached to the present invention is a schematic diagram of an ATY manufacturing apparatus 300 for manufacturing a PBS ATY 250 for clothing or interior use according to the present invention.

The PBS ATY 250 for clothing or interior use according to the present invention is manufactured by supplying the prepared PBS multifilament 200 for clothing or interior use to the ATY manufacturing apparatus 300 and bridging the air.

In FIG. 2, it is shown that PBS ATY 250 for clothing or interior is manufactured by combining three of the PBS multifilaments 200 for clothing or interior, but according to the present invention, it is used as a general textile for clothing or interior. In order to be suitable, it is possible to selectively manufacture PBS ATY (250) for clothing or interior by combining 2 to 6 combinations.

As shown in FIG. 2, in the method of manufacturing the PBS ATY 250 for clothing or interior use, three strands of PBS multifilament 200 for clothing or interior use are mixed with a first feed roller 210 and a second feed roller ( 220) and supplied to the air texturing device 230.

The three-combined PBS multifilament 200 for clothing or interior use is subjected to air bridging in the air texturing device 230, and then the fourth feed roller 240, the fifth feed roller 250, and the heater 280. ) and by passing through the sixth feed roller 260 and winding it around the take-up roller 270, manufacturing of the PBS ATY 250 for clothing or interior according to the present invention is completed.

When manufacturing the PBS ATY (250) for clothing or interior according to the present invention, the thread speed is preferably 250 to 500 m/min.

The air texturing process performed in the air texturing device 230 may be performed using a conventional air texturing device, and in the present invention, it is preferable to air texturing the PBS multifilament 200 with an air pressure of 2 to 10 Bar. . When the air pressure is less than 2 Bar, the air texturing effect on the PBS multifilament 200 is not properly expressed, and when it exceeds 10 Bar, the tension due to the air texturing is large, which may cause damage to the fibers.

In addition, the heat treatment by the heater 280 is a process of heat-setting the loops formed by the air texturing device 230 to maintain their shape, and the heat treatment temperature at this time is preferably 50 to 90 °C. When the heat treatment temperature is less than 50 ° C, the heat setting effect cannot be sufficiently exhibited, and when it exceeds 90 ° C, the shape of the loop may rather collapse due to the relaxation effect caused by heat.

Manufacturing of the PBS ATY 250 for clothing or interior according to the present invention may be completed through the above process.

Hereinafter, the present invention will be looked at in more detail through Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

[Example 1]

Using the manufacturing apparatus 100 of the PBS multifilament 200 for clothing as shown in FIG. 1, a PBS chip having a melt index (MI) of 30 g/10 min is melted, and spinning with 24 nozzles at a spinning temperature of 180 ° C. A multifilament was ejected from the nozzle 10. Thereafter, after cooling the multifilament in the cooling section 20, an oil agent was applied in the oil supply guide 30 and supplied to the first godet roll 40. At this time, the temperature of the first godet roll 40 is raised to 50° C., and the multifilament supplied to the first godet roll 40 as described above rotates the first godet roll 40 5 times to raise the temperature of the multifilament. After that, it was withdrawn at a speed of 3,000 m/min and supplied to the second godet roll 50. In addition, it was stretched between the first godet roll 40 and the second godet roll 50 at a drawing speed of 4,100 m/min, and was drawn at a drawing ratio of 1.06 times. At this time, the temperature of the second godet roll 50 is raised to 90° C., and the heat is set by rotating the second godet roll 50 5 times, and between the second godet roll 50 and the cold roll 60. was relaxed with a relaxation rate of 100%. After the multifilament was relaxed as described above, it was wound at a speed of 4,000 m/min with a winder 80 to prepare a test piece of PBS multifilament (200) drawn yarn having a total fineness of 60 denier and 24 filaments.

[Example 2]

After plying the PBS multifilament 200 prepared according to Example 1 using the ATY manufacturing apparatus 300 as shown in FIG. After adjusting and performing air texturing, heat treatment was performed at 80 ° C. to prepare a test piece of PBS ATY (250) for clothing.

[Example 3]

A PBS ATY (250) test piece for clothing was prepared in the same manner as in Example 2, except that six PBS multifilaments (200) prepared according to Example 1 were combined and plied.

In addition, the physical properties of the test pieces of Examples 1 to 3, that is, tensile strength and elastic recovery were evaluated in the following manner.

1) Tensile strength and elongation at break

In accordance with ASTM D-885, tensile strength (g / d) and elongation at break (%) of PBS multifilament 200 were measured using a universal tensile tester of Instron Engineering Corp. (Canton, Mass), respectively. It was measured (initial load: 0.05 g/d, sample length: 250 mm, tensile speed: 300 mm/min). The tensile strength and elongation at break were tested 5 times and then averaged, and the results are shown in Table 1.

2) Elastic recovery rate (%)

A PBS multifilament (200) with a length of 200 mm was stretched using a universal tensile tester from Instron Engineering Corp. (Canton, Mass) at a lifting rate of 200 mm/min until the elongation of the sample reached 40%. Next, after leaving the sample at 40% elongation for 1 minute, removing the elongation again at a descending speed of 200 mm/min, an initial load of 0.002 g/d is applied to the sample again to measure the residual elongation (L) of the sample. The elastic recovery rate (%) was measured by substituting the residual elongation (L) of the sample measured as described above into the formula below, and the results are shown in Table 1.

Tensile strength (g/d) Break elongation (%) Elastic recovery rate (%) Example 1 1.9 20 75 Example 2 2.3 130 94 Example 3 2.5 150 95

As shown in Table 1, the PBS multifilament 200 prepared in Example 1 exhibits tensile strength of 1.9 g/d, elongation at break of 20%, and elastic recovery rate of 75% for clothing or interior use. It can be confirmed that it can be used suitably for the purpose.

In addition, due to the excellent biodegradability inherent in the PBS polymer, it is naturally degraded even when discarded after use, and thus has an effect of not adversely affecting the environment.

In addition, as shown in Table 1, the PBS ATY (250) prepared in Examples 2 and 3 has tensile strength of 2.3 to 2.5 g/d, elongation at break of 130 to 150%, and elasticity of 94 to 95%. It can be seen that the recovery rate is indicated.

That is, the PBS multifilament 200 for clothing or interior use and the PBS ATY 250 according to the present invention have tensile strength of 1.9 to 2.5 g/d, elongation at break of 20 to 150%, and particularly elastic recovery (%) It can be seen that has a measured value of 75 to 95%.

In addition, the PBS ATY (250) prepared in Examples 2 and 3 has the excellent properties of the PBS multifilament 200 as it is, and at the same time, the elastic recovery rate (%) by air texturing is increased, resulting in light weight, softness and bulkiness etc. will have the advantage of increasing.

As described above, the PBS multifilament 200 for clothing or interior use according to the present invention has an excellent elastic recovery rate (%), providing a comfortable wearing feeling during manufacture of clothing, and PBS ATY for clothing or interior use manufactured using the same. (250) exhibits excellent characteristics of heat preservation and light weight due to increased bulkiness. In addition, the PBS multifilament for clothing or interior use (200) and the PBS ATY for clothing or interior use (250) are naturally decomposed in the ecosystem when discarded after use, and thus have an environmentally friendly effect that does not cause environmental pollution problems. to be

The present invention has been described above with the devices shown in the drawings and some embodiments, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other experimental examples therefrom. will understand Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: spinneret
20: cooling section
40: 1st godet roll
50: 2nd godet roll
200: PBS multifilament for clothing
250: PBS ATY for clothing
210: 1st feed roller
220: 2nd feed roller
230: air texturing machine
240: 4th feed roller
250: 5th feed roller
280: heater
300: ATY manufacturing device

Claims (4)

delete Made by drying and melt-spinning polybutylene succinate chips with a melt index of 20 to 80 g/10 minutes, the elastic recovery rate is 75 to 95%, the tensile strength is 1.0 to 4.5 g/d, and the elongation at break is Manufactured by plying polybutylene succinate multifilaments of 20 to 150%, but plying 2 to 6 ply, heat-treated poly for clothing or interior to maintain the shape of the loop formed during air texturing Butylene succinate air texturing yarn.
delete A first step of drying polybutylene succinate chips having a melt index of 20 to 80 g/10 minutes at a drying temperature of 30 to 100 ° C for 4 to 12 hours;
A second step of preparing polybutylene succinate multifilaments by melt-spinning the chips dried in the first step, but made of partially drawn yarn (POY) or fully drawn yarn (FDY);
A third step of winding the polybutylene succinate multifilament prepared in the second step;
A fourth step of plying the polybutylene succinate multifilaments prepared in the third step in 2 to 6 bundles and supplying them to an air texturing device;
a fifth step of manufacturing air-textured yarn by air bridging the polybutylene succinate multifilaments supplied to the air-texturing device in step 4; and
A sixth step of heat-treating the air texturing yarn prepared in the fifth step at 50 to 90 ° C. to maintain the shape of a loop formed during air texturing while passing through a heater; Manufacturing method of butylene succinate air texturing yarn

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