JPS60126345A - Formed yarn for embroidering sewing machine yarn comprising modified polyester filament - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a yarn for embroidery machine thread made of a modified polyester filament and used as a yarn for embroidery thread. More specifically, it is a yarn for embroidery sewing thread made of a modified polyester filament used for manufacturing embroidery sewing thread, which has excellent dyeability and is sewnable in embroidery processing with the embroidery sewing thread manufactured from the yarn. The present invention relates to a produced yarn for embroidery machine thread made of a modified polyester filament for producing an embroidery thread having excellent properties, workability, appearance quality and durability of embroidered products.

The produced yarn for embroidery machine thread as used in the present invention means a thread obtained by twisting a multifilament used for embroidery machine thread, setting the resulting twin-twisted thread, and winding it into cheese or the like. That is, the term "produced yarn" as used in the present invention means embroidery machine thread that has not been dyed.

The embroidery machine thread referred to in the present invention is an embroidery machine thread used for machine embroidery such as single-head min/min embroidery, multi-head min/min embroidery, and fiftly embroidery. Specifically, embroidery for the purpose of identification such as patches, shoulder pads, cap badges, names, etc., blouses, dresses, blazers, coats,
Embroidery on clothing such as underwear.

Embroidery for decoration of wall materials, wall hangings, chair upholstery, chair covers, table cloths, table centers, futons, 〈-1 seat futon covers, etc. Personal items such as shoes, bags, hats, handkerchiefs, towels, shoes/contacts, etc. This is an embroidery machine thread used for embroidery on miscellaneous goods.

[Prior art and its problems]

Silk is the conventional thread for embroidery machine threads.

Natural fibers such as cotton, and recycled fibers such as rayon and polynosic are used, and rayon has been mainly used from the viewpoint of the appearance quality of embroidered products.

However, when using embroidery sewing thread made of natural fibers or recycled fibers, ■Low strength and large strength variations can cause thread breakage during the embroidery process, which reduces the operability of the embroidery process. Embroidery products have low strength, so wear and washing can cause fuzzing and thread breakage, making them less durable. ■Due to water absorption and hygroscopic properties, they can shrink when exposed to water from rain or washing, causing embroidery to deteriorate. There are disadvantages such as the appearance of wrinkles on the processed surface and poor appearance quality. As a means to solve these drawbacks, studies have been conducted to use polyester synthetic fibers, particularly polyethylene terephthalate filaments, as yarns for embroidery sewing threads. Although the above problem was solved by this polyethylene terephthalate filament, the following new problem occurred. The first problem is that polyethylene terephthalate filament cannot be dyed in a deep color unless it is at a high temperature of 120 to 140 degrees Celsius.In order to obtain sewing thread with 7 stitches, the produced thread for embroidery sewing thread must be dyed in a high-pressure dyeing machine. It must be dyed. Since this high-pressure dyeing machine does not have a small rotation, the operability (dyeing processability) of the dyeing process used to obtain embroidery sewing thread is greatly reduced. The embroidery process carried out industrially usually consists of 9 to 1 pieces of embroidery.
Many types of embroidery machine threads with different colors are used for 0p units, and there are approximately 100 types of embroidery machine threads with different colors, so all of these should be kept at the embroidery site. That is impossible.

Therefore, in order to carry out embroidery on an industrial scale, it is necessary to keep a dyeing machine near the embroidery processing site and to produce embroidery machine threads in different colors for each production.

Therefore, if a dyeing machine with limited rotational speed has to be used in the dyeing process, the operability of the dyeing process will be significantly reduced. In this way, high-pressure dyeing machines are unsuitable for small-lot production and embroidery processes that require delicate color matching.

High-pressure dyeing machines have higher equipment costs than normal-pressure dyeing machines, so if you use high-pressure dyeing, the cost of embroidery sewing thread will be higher.

The second problem is that the strength of the polyethylene terephthalate filament is too high, which reduces the operability of the embroidery process.

Normally, at the start of the embroidery process, the sewing machine bobbin thread is intertwined with the bobbin thread of the sewing machine, so that the needle can move smoothly. Fix it nearby, 5~
6 After forming the embroidery seam, the seam at the beginning of the embroidery that has been pulled out excessively/
You can proceed by removing ten threads.

The excessively pulled out min/needer thread remains in the fixed position for a long time (d) as the embroidery hoop moves, the embroidery surface becomes taut, causing the embroidery machine thread to become misaligned, and This prevents the needle movement and leads to the needle thread being cut.Therefore, this excessively drawn sewing machine needle thread 1d becomes an unnecessary thread and must be removed immediately.This removal work is done by cutting it with bare hands. Normally, if the embroidery machine cannot be cut with bare hands, the embroidery machine must be temporarily stopped and a knife must be used to remove the embroidery machine, reducing the operability of the embroidery process.

By the way, since embroidery sewing thread made of polyethylene terephthalate filament usually has a strength of 5.0)/d or more, it is impossible to remove unnecessary thread during embroidery process with bare hands without damaging the hands.

Therefore, if a produced yarn for embroidery machine thread made of polyethylene terephthalate filament is used as yarn for embroidery machine thread, the operability of embroidery processing will be reduced. In order to solve this problem, it is possible to use a synthetic thread for embroidery machine threads made of polyethylene terephthalate filaments with reduced strength. When performing Embroidery 2 process using Mino/thread, stitches may be skipped during the embroidery process.

Thread breakage occurs and so-called sewability deteriorates.

The sixth problem is that the produced yarn for embroidery sewing thread made of polyethylene terephthalate filaments can only be dyed with disperse dyes for polyester, so it is impossible to obtain embroidery sewing thread with a clear hue and deep tone. As is clear from the intended use, embroidered products are required to have a luxurious atmosphere and splendid appearance, and to achieve this, it is necessary to use embroidery sewing threads with vivid hues and deep tones. Hence this kind of hue.

The produced yarns for sewing machine threads 1 to 2, which are made of polyethylene terephthalate filaments and which cannot produce embroidery machine threads with color tone, are unsuitable as raw threads for embroidery machine threads. Therefore, in order to solve the above-mentioned problems, the present inventors
A method using a produced thread for embroidery machine thread made of polyester filament copolymerized with a large amount of 5-sodium sulfoiophthalic acid component was investigated so as to enable atmospheric pressure dyeing. However, embroidery machine threads made of polyester filaments that are copolymerized with a 5-sodium sulfoinophthalic acid component and can be dyed under normal pressure, obtained by the method disclosed in JP-A-53-55022, cannot be used in embroidery machines. When used as Itokawa yarn, the shrinkage rate of the yarn is high, so there is a large difference in dyeing between the meat layer and the outer layer during cheese dyeing, resulting in a decrease in yield during dyeing processing, and the shrinkage rate of the yarn is high. Since embroidery tends to stretch during embroidery processing, embroidery wrinkles occur when embroidered products are ironed, resulting in a problem in that only embroidered products with inferior appearance quality can be obtained.

Therefore, the present inventors determined the amount of copolymerization of inophthalic acid component containing metal sulfone-1 group, Ita limiting viscosity 6 strength, elongation,
An embroidery sewing machine made of modified polyester filament that has characteristics suitable for Itokawa yarn for embroidery sewing machines by setting the elongation, number of first twists, number of first twists, and dyeing shrinkage ratio under a cutting force load within a specific range. The present invention was achieved by discovering that a produced yarn for yarn can be obtained.

[Purpose of the invention]

An object of the present invention is to provide a yarn for embroidery machine thread made of modified polyester filament, which has excellent operability and yield during dyeing process, and which provides a sewnable yarn for embroidery machine thread manufactured from the generated yarn in embroidery process. This embroidery thread is made from modified polyester filament, which produces embroidery thread that has excellent properties such as flexibility, workability, and the appearance quality and durability of embroidered products.

An object of the present invention is to provide a synthetic yarn for Yu sewing machine thread.

[Structure of the invention]

In the present invention, an isophthalic acid component containing a metal sulfonate group is copolymerized with a molar ratio of 35 to 6.5, and the intrinsic viscosity is 0.35.
A produced yarn for embroidery sewing machine thread made of modified polyester filament having a strength of 2.0 to 3.
．． J'/d, the elongation is 20 to 38, the elongation under a strong cutting force is less than a of the elongation, and the dyeing shrinkage is 16 to 38.
This is a produced yarn for embroidery machine thread made of a modified polyester filament, characterized in that the number of first twists (T1) and the number of first twists (T2) satisfy the following formula: 64%.

T + (T/m) = x/(un-T2(T/m)
=AXTl (In the formula, = 4500 to 8000. D is the total denier of the modified polyester filament, A is 07 to 09) The polyester constituting the yarn for embroidery machine thread made of the modified polyester filament of the present invention is ethylene glycol. The target is a polyester containing terephthalic acid or its ester as the main dicarboxylic acid component. A part of this dicarboxylic acid component may be substituted with a dicarboxylic acid component other than the inophthalic acid component containing a metal sulfonate group, such as isophthalic acid, diphenylcarboxylic acid, glutaric acid, naphthalene dicarboxylic acid, azivinyl dicarboxylic acid, etc., to the extent that the effects of the present invention are not impaired. /acids, dicarboxylic acids such as sepa-7aic acid, dodeca/diacid, azelaic acid, or their esters.

Oxygen/carboxylic acids or esters thereof such as P-oxidized/benzoic acid and P-β-oxidized/ethoxybenzoic acid may be substituted, and a portion of ethylene glycol may be replaced with oxy/carboxylic acids such as P-oxidized/benzoic acid and P-β-oxidized/ethoxy/benzoic acid, and a portion of ethylene glycol may be replaced with .4-Cyclohexane dimethanol.

Diethylene glycol, triethylene glycol, fluoropylene glycol, tetraethylene glycol, neopentyl glycol, 1,4-cyclohexanediol,
Glycols such as bisphenol A and polyalkylene glycol may be used instead. Further, it is also possible to further use a small proportion of a chain branching agent such as pentaerythritol, trimethylolpropane, trimellitic acid, trimenoic acid, etc. in the polyester as long as the effects of the present invention are not impaired. Furthermore, in the synthesis of the modified polyester of the present invention, catalyst 7 coloring inhibitors well known in the art, ether bond by-product inhibitors such as alkali metal salts, antioxidants, matting agents such as titanium dioxide, and flame retardants are used. etc. can be used as appropriate. In particular, it is preferable to use alkali metal salts because they suppress the production of by-products such as diethylene glycol.

The isophthalic acid component (hereinafter abbreviated as S component) containing a metal sulfonate group, which is a copolymerization component in the present invention, is a compound represented by the following formula, and specifically, dimethyl (5-
Sodium sulfo)isophthalate, bis-2-hydroxyethyl (5-sodium sulfo)isophthalate,
Bis-4-hydroxybutyl (5-sodium sulfo)
Inophthalate.

Examples include dimethyl (5-lithium sulfo) inophthalate.

(However, M represents an alkali metal such as Na, Li, K, etc., A, A' is H, an alkyl group or (OH2)1
10H, and n represents an integer of 2 or more. ) Preferred S components include dimethyl (5-stria sulfo) inophthalate, bis-2-hydroxyethyl (5
- Sodium sulfo)inphthalate. S
The component needs to be copolymerized with a molar ratio of 6.5 to 6.5, more preferably 4.0 to 6.0 molar, with respect to the polyester constituting the produced yarn for embroidery sewing thread.

If the copolymerization amount of the S component is less than 5.5 mol%, the produced yarn for embroidery machine thread made of modified polyester filament will not be dyed to a sufficiently deep color at temperatures below 100°C, and it will not be possible to dye it in an embroidery machine using an ordinary pressure dyeing machine. I can't make thread. On the other hand, if the copolymerization amount of the S component exceeds 6.5 mol%, the physical properties of the modified polyester filament yarn for embroidery machine thread, especially the heat resistance, will deteriorate, resulting in a decrease in needle heat received during embroidery processing. As a result, the embroidery sewing thread deteriorates, causing thread breakage during embroidery processing and reducing sewability.

The intrinsic viscosity of the yarn for embroidery sewing thread made of the modified polyester filament of the present invention is 0.35 to 0.
It needs to be 45.

When the intrinsic viscosity is less than 0.65, the strength of the resulting yarn for embroidery sewing thread made of modified polyester filament when the elongation is 20% or more is 2. When the intrinsic viscosity is lower than oP/d and exceeds 045, the strength when the elongation is set to 38% or less becomes higher than 3.5F/a, which is the object of the present invention.

effect cannot be achieved.

The strength of the yarn for embroidery sewing thread made of the modified polyester filament of the present invention is 2.0-3. FW/
d.

Strength is 2. If the embroidery thread is less than oP/d, the embroidery sewing thread made from the produced thread will break during embroidery, reducing the sewability of the embroidery process, and the embroidery product will become fuzzed or fuzzed due to wear and washing. This results in poor durability, such as thread breakage. On the other hand, the strength is 3
．． If it exceeds 1/d, when performing embroidery using embroidery machine thread made from the produced thread, hands will be damaged when removing unnecessary thread with bare hands at the beginning of embroidery.

Therefore, it is necessary to temporarily stop the embroidery machine and use scissors to remove unnecessary threads, which reduces the operability of the embroidery process.

The elongation of the yarn for embroidery sewing thread made of modified polyester filament in the present invention must be 20 to 58 inches, more preferably 20 to 30 inches. Elongation is 2
If it is less than 0%, the embroidery sewing thread made from the resulting yarn will break during embroidery, resulting in poor sewability in embroidery. - If the elongation exceeds 38%, the sewing machine thread made from the produced thread will be stretched greatly as the sewing machine needle descends during the embroidery process. The loose shape of the needle thread formed during the transition becomes unstable, and the
/In a multi-head sewing machine, the tip of the hook with the sewing machine bobbin thread attached will catch the sewing machine F thread loop.
Makes it difficult for yarn to pass through the needle thread loop. As a result, skipped stitches and thread breakage occur during embroidery, reducing the sewability of the embroidery.

In the present invention, the cutting strength of the produced yarn for embroidery sewing thread made of modified polyester filament and the elongation under load must be equal to or less than the elongation λ. If the elongation at the +load of the cutting strength is larger than the elongation π, when embroidery is performed using the embroidery thread made from the resulting yarn, the embroidery thread will rise in a bow shape from the embroidery base fabric surface. , embroidery machine threads are disorganized on the embroidered product, and the appearance quality of the embroidered product is degraded. For example, woven-dense fabrics such as lei/coat fabrics, medium weight fabrics such as jeans and workwear fabrics, and Hypalon.

When using a fabric with a high resistance to penetration of threads such as neoprene or urethane coated fabric as the embroidery base fabric, the embroidery sewing thread is caught between the thread and the base fabric at the needle hole and penetrates the base fabric. Stretched out on the side. Since the embroidery sewing thread with a length comparable to this stretched length remains as a slack thread on the embroidery surface side, the embroidery machine thread made of modified polyester filament whose elongation under the S load of cutting strength is larger than the above elongation. When a produced thread for sewing thread is used as a raw thread, a problem arises in that the embroidery sewing thread stands up from the surface of the embroidery base fabric in a bow-shaped manner.

The dyeing shrinkage rate of the yarn for embroidery machine thread made of the modified polyester filament/1 according to the present invention is 1.6 to 6.
It is necessary to have Section 4. The dyeing shrinkage rate is 1.6
If the dyed yarn is dyed with cheese, the tightness of the cheese due to shrinkage during dyeing is too small, so when the dyed cheese is pulled up from the dyeing solution, the bobbin/flesh may fall off the dyed cheese, or the wound dyed yarn may fall on the surface of the cheese. It often falls one after another. This reduces the production yield of dyed cheese. On the other hand, when the dyeing shrinkage rate exceeds 6.4, when the resulting yarn is cheese-dyed, a dyeing difference occurs between the inner layer and the outer layer, and the production yield of yarn that can be dyed to the target hue decreases. Embroidery machine thread made from the produced yarn tends to stretch during embroidery, resulting in skipped stitches and thread breakage during embroidery, resulting in poor sewability during embroidery.

The number of ply twists of the produced yarn for embroidery sewing thread made of the modified polyester filament of the present invention is 4500/Jl.
-(T/m)-8000/σ1-(T/m),
The number of second twists must be 07 to 09 times the number of first twists. Here, D (-1 is the total tenier number of the modified polyester filament before twisting. If the number of final twists is less than 07 times or more than 09 times the number of F twists, the twist balance within the twisted yarn will be poor. When embroidery is performed using embroidery machine thread made from the produced thread, a snarl occurs in the sewing machine needle thread loop that is formed when the needle moves from the bottom dead center to the 111 ascending side. With headstand and multi-head embroidery machines, it is difficult to attach the bobbin thread to the tip of the kettle, and with a short/Ifly embroidery machine, it is difficult to attach the bobbin thread (copper thread). It becomes difficult for the shuttle to pass through the needle thread loop.This causes skipped stitches and thread breakage during the embroidery process, reducing the sewability of the embroidery process. If it is less than the lower limit, the number of twists will decrease due to the above relationship, and the number of twists of the generated yarn will decrease.1-1 The generated yarn will be prone to wrinkles.This is because the generated yarn for embroidery sewing thread is a raw yarn. A toe-twisted yarn is produced by twisting the toe-twisted yarn, and the two lower-twisted yarns are pulled together and twisted in the opposite direction to the twisting direction of the first-twisted yarn (toe-twisted yarn is applied).

Therefore, when the number of ply twists decreases, the yarn number of the produced yarn for embroidery sewing thread decreases, which reduces the entanglement of two yarns and makes it more likely to cause yarn fraying. When embroidery is performed using embroidery machine thread made from synthetic yarn that is prone to fraying, the needle thread loop of the sewing machine becomes unstable, resulting in skipped stitches and thread breakage during the embroidery process, which may affect the sewability of the embroidery process. decreases. On the other hand, the embroidered product made from the J-1 yarn with the number of twists F exceeding the upper limit of the range specified in the present invention becomes hard and has a reduced luster, resulting in a deterioration in appearance quality. Furthermore, if the elongation at a load corresponding to the total denier of the produced yarn for embroidery sewing thread made of the modified polyester filament of the present invention after dyeing and elongation treatment (described in detail below) is 5% or less, the produced yarn When embroidery is performed using the prepared embroidery sewing thread, the embroidery sewing thread lifts up from the embroidery base fabric surface, the embroidery sewing thread alignment holes on the embroidery surface are reduced, and the appearance quality of the embroidered product is improved. This is preferable because it becomes even better. Furthermore, if the dry heat shrinkage ratio of the yarn for embroidery machine thread made of the modified polyester filament of the present invention after dyeing and elongation treatment is 7 so or less, when the embroidery product made from the yarn is ironed, Since the shrinkage of the embroidered product is low, embroidery wrinkles do not occur on the embroidery base fabric surface, and the appearance quality is further improved, which is preferable. Furthermore, if the cross-sectional shape of the monofilament of the yarn for embroidery machine thread made of the modified polyester filament of the present invention is set to a 3 to 5-lobed cross section, the amount of light reflected on the surface of the embroidery product made from the yarn will be reduced. This is advantageous because the embroidered product has an excellent gloss and the appearance quality of the embroidered product is further improved. In particular, a 6-leaf cross-section provides a strong luster similar to rayon, while a 5-leaf cross-section yields a silk-like mild luster. -47
'C When the single fiber fineness of the yarn for embroidery yarn made of the modified polyester filament of the present invention is set to 15 to 5 denier, the embroidered product made from the yarn has excellent gloss and appearance quality. It is good because it gives. If the single fiber fineness is less than 15 denier, the amount of diffused reflection of light on the surface of the embroidered product will increase, resulting in a reduced gloss window, and if the single fiber fineness exceeds 5 denier, the embroidered product will become hard, resulting in a decrease in appearance quality. That's why I don't like it.

The above-mentioned novel modified polyester filament of the present invention/
The product yarn for embroidery thread consisting of 1 can be industrially advantageously produced, for example, by the following method. That is, the inophthalic acid component containing a metal sulfonate group is
A modified polyester copolymerized with 65 molar strips is produced by a conventional method, and this modified polyester is vacuum-dried and then melt-spun by a conventional method to produce an undrawn modified polyester filament with an intrinsic viscosity of 0.35 to 0.45. get. The obtained unstretched modified polyester filament was heated for 1.5 minutes between a supply roller at 70 to 100'C and a first stage drawing roller at 80 to 140'C.
Stretched 4 to 55 times, then stretched between second stage stretching rollers at 170 to 220°C so that the total stretching ratio is 22 to 65 times, and then between the second stage stretching roller and an unheated take-off roller. Perform a restricted contraction of 2-9%. The contact residence time of the second stage stretching roller is preferably 0.03 to 2 seconds. The obtained modified polyester filament was twisted at 4500/v'ryo-800 in the S direction using an Itari set twisting machine.
0/JH (T/m) (D is the total denier of the modified polyester filament). The obtained twisted yarn is 2
The yarns are double-twisted, and twisted in two directions by 0.7 to 0.9 times the number of first twists using an Itari set twisting machine, and wound around a bobbin to produce twin-twisted yarn. After twisting and setting this twin twisted yarn,
Using a wine gourd, cheese, corn, etc. are wound up to obtain a yarn for embroidery yarn consisting of the modified polyester filament/1 of the present invention.

〔Effect of the invention〕

(1) The yarn for embroidery yarn made of the modified polyester filament of the present invention is copolymerized with 35 to 65 moles of inophthalic acid component containing metal sulfone-1 groups, so the temperature is below 100°C. It can be dyed in a sufficiently deep color. Therefore, dyeing can be easily carried out at any time without equipment such as a high-pressure dyeing machine, and the operability of the dyeing process is excellent.

(2) The yarn for embroidery yarn made of the modified polyester filament of the present invention is copolymerized with 6.5 to 6.5 mol of an inophthalic acid component containing a metal sulfone-1 group. The yarn is dyeable with basic dyes that can produce vivid hues and deep tones, and the yarn is dyeable with basic dyes.7.1.
The embroidered products produced by J. et al. have a luxurious atmosphere, a splendid appearance, and a high quality appearance.

(3) Since the produced yarn for embroidery yarn made of the modified polyester filament of the present invention is hydrophobic, the embroidery products made from the produced yarn do not shrink when wet with water, and the embroidery base fabric surface No wrinkles will appear on the skin. And the appearance quality is excellent. For this reason, it is ideal as an embroidery yarn for embroidery on quick-drying clothing.

(4) The embroidery yarn/filament yarn made of the modified polyester filament of the present invention has a strength of 20 to 5.1'/
d, and the embroidery thread produced from the produced thread does not break due to shock during embroidery processing and has excellent sewability. In addition, since unnecessary threads at the beginning of embroidery can be removed with bare hands during embroidery, the operability of embroidery is improved.

Additionally, embroidered products do not become fuzzed or thread-broken due to abrasion caused by wearing or washing, so they are highly durable.

(5) The produced yarn for embroidery machine thread made of the modified polyester filament of the present invention has an elongation of 20 to 58%, and the embroidery machine thread produced from the produced thread does not break during embroidery processing. It also has excellent sewability in embroidery with less skipped stitches and thread breakage.

(6) The produced thread for embroidery sewing thread made of the modified polyester filament of the present invention has an elongation of 6 or less under a cutting force load, and the embroidery thread produced from the produced thread has an elongation of 6 or less during embroidery processing. The embroidery does not lift up from the surface of the embroidery base fabric, and the appearance quality of the embroidered product is excellent. Moreover, since the elongation is between 20 and 38, the elongation at 5 loads of cutting strength (elongation at low load) is low. Normally, the tension applied to embroidery sewing thread during embroidery processing is about 1 load of embroidery sewing thread strength, so the yarn for embroidery sewing thread is manufactured from the modified polyester filament of the present invention, which has low elongation at low loads. Embroidery machine thread is difficult to stretch during the embroidery process. This design also reduces skipped stitches and thread breakage during the embroidery process, reduces the lifting of the embroidery machine thread from the embroidery base fabric surface during the embroidery process, improves the sewability of the embroidery process, and improves the appearance quality of the embroidered product. is excellent.

(Strength) The dyeing shrinkage rate of the yarn for embroidery sewing thread made of the modified polyester filament of the present invention is 1.6 to 6.
4tI), the dyed cheese does not come off the bobbin during cheese dyeing, and the dyed thread does not fall off the cheese surface.
There is little difference in dyeing between the inner and outer layers of trench-dyed cheese, and the production yield in the dyeing process is good.

In addition, the elongation is 20 to 58%, and the elongation under one strong load of cutting 1 is less than the above-mentioned elongation. Embroidery sewing thread made from synthetic yarn is difficult to stretch during the embroidery process. Therefore, the elongation recovery (instantaneous recovery, delayed recovery) of the embroidery machine thread after the embroidery process is small, and the embroidery wrinkles that occur when the embroidery machine thread recovers from the elongation that occurs when the embroidery frame is removed after the embroidery process do not occur, and the embroidery machine thread can be easily embroidered. The appearance quality of processed products is excellent.

(8) The number of ply twists of the yarn for embroidery sewing thread made of modified polyester filament in the present invention is 4500.
/JK-8000/J-(T/m), the number of top twists is 0.7 to 09 times the number of bottom twists, and embroidery processing is performed using the embroidery machine thread made from the produced yarn. The sewing machine needle thread loop formed by the embroidery sewing thread is stable, there is little occurrence of skipped stitches or thread breakage, and it has excellent sewability in embroidery processing.

(9) Furthermore, by controlling the dry heat shrinkage rate of the yarn for embroidery machine thread made of the modified polyester filament of the present invention to 7% or less after dyeing and elongation treatment, the embroidery products made from the yarn can be ironed. Embroidery wrinkles are less likely to occur on the embroidery base fabric surface during stitching, and the appearance quality of the embroidered product is further improved.

00 Furthermore, the single fiber cross section of the produced yarn for embroidery sewing thread made of the modified polyester filament of the present invention is 3 to 5.
By using the leaves, the embroidered products made from the resulting yarn have excellent luster and a more luxurious atmosphere.

It expresses elegance and further improves the appearance quality.

In particular, if you make it into a 6-leaf cross section, it will have a strong luster similar to rayon.
A cross-section of the leaves gives a silky, mild luster.

The present invention will be explained in more detail below using examples.

The method for measuring each characteristic value in the examples is as follows.

[Limiting viscosity]

Polyester strands or polyester filaments or yarns are dissolved in ornochlorophenol and the measured value is expressed at 25°C.

[Melting point]

Using DSci-IB manufactured by Perkin-FJlmer, the temperature of a sample polyester (10 cm) is raised from room temperature at a rate of 16° C./min under a nitrogen gas atmosphere, and the temperature is expressed as the minimum point of the melting peak.

[Elongation under 5 loads of strength, elongation, and cutting strength] Using a constant speed extension type tensile tester in standard atmosphere at 20 ° C. and 65% RH, sample length 200 mm, crosshead speed 200 mm/min, Tensile speed 100%/m
Involve the load-elongation rate curve obtained when pulling at a chart speed of 200 cylinders/mir+. Strength is expressed as the value obtained by reading the maximum strength (cutting strength) and dividing it by the denier before the test, and elongation is expressed as the value of elongation at the time of maximum strength. It is expressed as the elongation of the strength value, which indicates the highest strength value of 1 in the elongation rate curve.

[Dyeing shrinkage rate]

Length measured by applying a load corresponding to the number of denier corners of the sample1. A sample of
yl YellowW 5GfJ (manufactured by Nippon Kayaku ■) 1.5
%Owf at a bath ratio of 1:50 for 60 minutes, then taken out and left in standard atmosphere for 4 hours 1-1 From the length tl measured under the above load again, the formula ((lo It is shown as a value obtained using At )/lo 1x1oo.

[Stainability]

A cylindrical knitted fabric was made from the sample using a 27-cage sock knitting machine, and 0.2% of a nonionic active agent (Sandets) G- was added using a conventional method.
900 (manufactured by Sanyo Kasei ■)] and boiling water containing 0.2% soda ash for 5 minutes, followed by washing and drying. Malachite green + oe$owf was obtained for the tube knitted fabric.

Acetic acid o, 5 m Z/ Z + acetic acid noda 0.29/
Dyeing is carried out for 60 minutes in warm water at 98°C in a bath ratio of 1:50. Next, the dye concentration in the dyed residual liquid after pulling up this tubular knitted fabric was measured, and the dye exhaustion rate of the tubular knitted fabric was determined.
It is expressed as the value of dye exhaustion rate.

[Dyeing and extension treatment]

The sample was heated to KayacrylYe], l at 98°C under no tension.
The sample was left in warm water containing 1.5% owf 3GS at a bath ratio of 1:50 for 60 minutes, then washed with water and dried. The obtained dyed yarn was tested in a standard atmosphere at 20°C and 65% RH using a constant speed extension type tensile tester to test the sample length to 680 tons.
nm, tensile speed 100mm/min, chart speed It
It was pulled at 100++ i/min, and when the load reached the load equivalent to the total denier of the dyed yarn in the resulting load-elongation curve, the tension was stopped and immediately 100 M/m
Return to zero load at a speed of in. This extension-restoration process is repeated 10 times.

[Dry heat shrinkage rate after dyeing and elongation treatment]

After applying a load corresponding to the denier of the sample obtained by the dyeing and elongation treatment and having the measured length to, the sample was left in air at 180°C for 20 minutes under no tension F, and then Take it out and leave it in standard atmosphere for 6 hours, then apply the above load again and use the measured length tl to calculate the formula (
(, to -1+)/lo]X100.

[Sewability]

ζrug Co., Ltd./# Model Beat101 computer-controlled embroidery machine// is used to embroider vertically 3 cm x horizontally at a speed of 600 x 1/min.
A total of 1,600 consecutive stitches are stitched on a cm square base fabric. In addition, 1 for the min/min needle is Organo DBK-5, #1.
1, and the embroidery base fabric is a medium-weight workwear fabric with a dense weave and a fabric weight of 275 'i/rn' made of a blended yarn of 80% polyester and 20% cotton. The sewability is expressed by repeating each embroidery thread five times and the total number of defects (thread breakage, skipped stitches) during the five repetitions.

Example 1 Dimethyl terephthalate 1-150 kg + ethylene glycol 97 and 7. Lithium acetate dihydrate 600 mg Manganese acetate tetrahydrate 152. Dimethyl (5-sodium sulfo) inophthalate in the amount shown in Table 1 was added to a mixture of 60 fl of antimony trioxide, and the mixture was heated from 140°C to 235°C under atmospheric pressure.
The temperature was raised over 4 hours while stirring with a sieve to complete the transesterification reaction. Then trinotyl phosphite 64.
5'! After adding 6567 ml of ethylene glycol slurry containing 16% titanium dioxide by weight, the inside of the system was
The pressure was reduced to 00 mm1 (p), and 30 kg of ethylene glycol was distilled off.
Raise the temperature to 80℃ and increase from 760mmHP to 1yanH over 1 hour! The pressure was reduced to 1 mm HP or less, and the polycondensation reaction was carried out at 280° C. for 90 minutes. Table 1 shows the intrinsic viscosity and melting point of each polyester obtained. Next, each polyester was vacuum dried, and the slit was 0.13 Wrm in a 36H slit, the slit length was 0.276 mm, and the depth was 0.
Discharge rate 405'/mi using 60++m Y hole mouthpiece
Melt spinning was carried out at n+ spinning temperature of 300° C. and take-off speed of 1400 m/min. The obtained undrawn yarn is supplied to a roller, a first drawing roller.

Stretched in two stages at a stretching speed of 600 m/min using a hot roll type stretching machine equipped with a second stretching roller and a take-up roller,
A drawn yarn of 110 denier 66 filament was obtained. The roller temperatures at this time were 92° C. for the supply inlet to 120° C., 120° C. for the first stretching roller, 210° C. for the second stretching roller, and 25° C. for the take-off roller. The total stretching ratio was 25 times, the stretching ratio between the supply roller and the first stretching roller was 174 times, and the stretching ratio between the first stretching roller and the second stretching roller was 144 times. The shrinkage ratio between the second stretching roller and the take-off roller was set to 35. Table 1 shows the properties of each drawn yarn obtained. Next, using each drawn yarn, the spindle rotation speed was 96,001" pm + the number of twists was 571 T/m using an Itari set twisting machine,
The number of first twists was prepared with the twisting direction being the S direction.

Then, the two plied yarns are pulled together and the spindle rotation speed is 720.
A twin-twisted yarn was prepared by applying a ply twist at 0 rpm, m number of 468 T/m, and two twisting directions. This twin-twisted yarn was placed at a fiber center in saturated steam at 55℃ under reduced pressure for 4 hours.
Heat treatment was performed for 0 minutes, and a centrifuge was applied to prevent twisting. Use this twist-preventing set thread with a soft winder, and wind it at a winding density of 0.3.
4, 6007 yarns were obtained by winding each into a dyeing tube. Table 2 shows the properties of each of the obtained yarns. Next, the dyeability of each produced yarn was evaluated, and the results are shown in Table 2.

Next, the dyed cheese made by soft winding of this produced yarn is installed in a cheese dyeing machine, and Kayacryl Yel'low5
GS1.5%owf+ Bath ratio 1:50, 98℃ x 60
It was dyed for a minute to obtain embroidery sewing thread. A sewability test was conducted using these embroidery sewing threads. Second result
Shown in the table.

Table 1 Table 2 Experiment A 2.3.4 shows the present invention, &1,5 shows comparative examples.

1st. As is clear from Table 2, experimental plate 1 was dimethyl (
Since the amount of copolymerization of 5-sodium sulfo)inophthalate is outside the lower limit defined in the present invention, the dyeability is unsatisfactory and normal pressure dyeing is impossible. Since the copolymerized amount of dimethyl (5-nato-l) ramsulfo) inphthalate exceeds the upper limit specified in the present invention, the sewability is poor.

Example 2 A polycondensation reaction was carried out in the same manner as in Example 17 except that the copolymerization amount of dimethyl (5-sodium sulfo) inophthalate was changed to 50 mol %, and the intrinsic viscosity was 0 by changing the polycondensation reaction time. .5 [1,0,41,0,44,0,
51 polyesters were produced. These polyesters were then spun into yarn in the same manner as in Example 1 and twisted to obtain yarn. Table 6 shows the properties of the resulting yarn. Embroidery Mino 7 thread was obtained from the resulting yarn in the same manner as in Example 1, and its sewability and workability were measured, and the results are shown in Table 6.

Table 5 Experiment 467. s indicates the present invention, experiment, and 4(, 6, q indicate comparative example).

During the operability and sewability test here, it means whether or not the unnecessary thread at the beginning of the embroidery process can be cut by hand without damaging the bare hands, and poor operability means that it cannot be cut by hand. As is clear from Table 6, Experiment No. Otsu 8, which met the requirements of the present invention, had good sewability and workability. On the other hand, in Experiment No. 6, the intrinsic viscosity of the produced yarn was outside the lower limit defined by the present invention, so the strength was lower than the lower limit defined by the present invention, and the sewability was poor. In Mapuko Experiment No. 9, the intrinsic viscosity of the produced yarn exceeded the upper limit specified by the present invention, the strength was higher than the upper limit specified by the present invention, and the operability was poor.

Comparative Example 1 Example 2 Polynysdel of Experiment No. 7 was used, the total stretching ratio was 275 times, the stretching ratio between the supply roller and the first stretching roller was 194 times, and the stretching ratio between the first stretching roller and the second stretching roller was set. Silk spinning was carried out in the same manner as in Example 1, except that the amount was increased by 142 times. The obtained drawn yarn was twisted in the same manner as in Example 1 to obtain a product yarn. The strength of the obtained yarn was 31
2/d, the elongation was 18%. An embroidery thread was obtained from this produced thread in the same manner as in Example 1, and its sewability was examined. The number of thread breakages was 5, and the sewability rating I was poor.

Comparative Example 2 Using the polyester of Example 2 Experiment No. 8, the total stretching ratio was 23 times, and the stretching ratio between the supply roller and the first stretching roller was 1.
．． Silk spinning was carried out in the same manner as in Example 1 except that the stretching ratio between the first stretching roller and the second stretching roller was 13 times. The obtained drawn yarn was twisted in the same manner as in Example 1 to obtain a product yarn. The strength of the obtained yarn was 2. i/
d.

The elongation was 41%. An embroidery thread was obtained from this produced thread in the same manner as in Example 1, and its sewability was examined.As a result, there were as many as 6 stitches, indicating that the sewability was poor.

Example 6 Using the polyester of Example 2 Experiment No. 7, yarn was produced in the same manner as in Example 17 except that the temperature of the second stretching roller was changed as shown in Table 4 to obtain a drawn yarn. . The obtained drawn yarn was twisted in the same manner as in Example 1 to obtain a product yarn. The dyeing shrinkage rate of the resulting yarn was examined and the results are shown in Table 4 along with the yarn characteristics of the yarn. The thread produced by the thread was dyed in the same manner as in Example 1 to obtain embroidery thread, and its sewability was examined. The results are shown in Table 4.

Table 4 also shows the results of dyeing processability when obtaining embroidered min/min yarns from dimensional yarns.

Experiment with Table 4, 4611. i2 represents the present invention, and No. 610.1 represents a comparative example.

As is clear from Table 4, Experiment No. 11.12, which met the requirements of the present invention, had good dyeing, lJg, and OT sewing properties. On the other hand, in Experiment No. 10, the dyeing shrinkage rate exceeded the upper limit of the present invention, so when the dyed cheese after dyeing was visually judged, a difference in dyeing was observed between the inner layer and the outer layer, so the dyeing processability was poor. Furthermore, the sewability was also poor. Further, in Experiment No. 13, the dyeing shrinkage rate was lower than the lower limit of the present invention, so when the dyed cheese was pulled out from the dyeing solution, the dyed cheese sometimes came off the bobbin, and the dyeing processability was poor. The dry heat shrinkage rate after dyeing and elongation treatment using the yarn produced in Experiment No. 12 was examined and found to be 5.5%. Further, the embroidered product obtained in the sewability test was ironed using a steam iron with a vacuum board at an ironing temperature of 140°C for a processing time of 10 seconds. No embroidery wrinkles were observed on the embroidery base fabric surface after treatment, and the appearance quality was good. The cross-sectional shape of the single fibers of the yarn produced by Kiraniko is trilobal,
Since the single fiber fineness was 61 denier, the embroidered product obtained from the produced yarn had a strong luster similar to that of rayon. In addition, the embroidery thread obtained by dyeing this produced thread with basic dye has a clear hue and deep tone, and the embroidery products made from this embroidery thread have a luxurious atmosphere. , had a gorgeous appearance.

Example 4 A yarn was produced in the same manner as in Example 1 except that the drawn yarn of Example 1 Experiment No. 6 was used and the number of twists was changed as shown in Table 5. I got some embroidery thread. Using this embroidery minon thread, the sewability and appearance quality of embroidered products were examined, and the results are shown in Table 5.

Table 5 Experiment A14 shows the present invention, AI 5, 16, 17.18
indicate comparative examples.

As is clear from Table 5, Experiment No. 14, which satisfied the requirements of the present invention, had good sewability and the appearance quality of the embroidered product. On the other hand, in experiment numbers 15 and 16, the values of the number of top twists/number of bottom twists were outside the range of the present invention, resulting in poor sewability, and the appearance quality of the embroidered product was poor due to skipped stitches. Ta. Further, in Experiment No. 17, the number of first twists was less than the lower limit of the present invention, so the sewability was poor, and the appearance quality of the embroidered product was poor because of skipped stitches. However, in Experiment No. 18, the number of first twists exceeded the upper limit of the present invention, so the embroidered product became hard and the appearance quality of the embroidered product was poor.

Example 5 Example 2 Using the polyester of Experiment No. 7, drawn yarn was produced in the same manner as in Example 1, except that the shrinkage rate between the second drawing roller and the take-up roller was changed as shown in Table 6. Obtained.

The obtained drawn yarn was twisted in the same manner as in Example 1 to obtain a product yarn.

Table 6 shows the properties of the resulting yarn. Next, an embroidery thread was obtained using the produced thread in the same manner as in Example 1, and an embroidered product was obtained in the same manner as in the sewability test, and its appearance quality was examined.

Experiment A20.21 in Table 6 shows the present invention, and Experiment A20.21 shows the comparative example.

As is clear from Table 6, in Experiment No. 20.21, the elongation under the cutting force τ load was within the range specified by the present invention, so the appearance quality of the embroidered product was good. On the other hand, in Experiment No. 19, the elongation under the cutting force (1) load exceeded the upper limit defined by the present invention, so the appearance quality of the embroidered product was poor. Further, using the yarn produced in Experiment No. 21, the elongation at a load corresponding to the total denier after dyeing and elongation treatment was measured using an elongation measurement method, and it was found to be 3.5%.

Claims (1)

[Scope of Claims] (1) An isophthalic acid component containing a metal sulfonate group is copolymerized with a molar ratio of 6.5 to 6.5, and the intrinsic viscosity is 0.3.
A produced yarn for embroidery machine thread made of modified polyester filament having a strength of 2.0 to 0.45.
~3.5p/11. The elongation is 20 to 38 inches, and the cutting strength is 1.
/3. A modification characterized in that the elongation under load is 1/8 or less of the elongation, the dyeing shrinkage rate is 1.6 to 64%, and the number of twists (TI) and number of twists (T2) satisfy the following formula. A synthetic thread for embroidery machine thread made of high quality polyester filament. T 1 (T/m) = Ni/Jl- T 2 (T/m) = AXT 1 (wherein = 45DO~8000.D is modified polyvarnish'
・Total denier of Rufilament, A2 0.7-0.9
) (2) Claim No. (1) in which the elongation under a load corresponding to the total denier after dyeing and elongation treatment is 5% or less
Generic thread for embroidery machine thread as described in Section 1. (3) The produced yarn for embroidery machine thread according to claim (1) or (2), which has a dry heat shrinkage rate of 7 threads or less after dyeing and elongation treatment. (4) The produced thread for embroidery sewing thread according to any one of claims (1) to (3), wherein the single fibers have a 6- to 5-lobed cross-sectional shape.