JP3121633B2 - Cup yarn for embroidery lace and manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery backing thread for embroidery lace and a method for producing the same.

[0002]

2. Description of the Related Art An embroidery lace is obtained by using an embroidery machine to embroider a base cloth such as tulle or water-soluble vinylon with a embroidery thread as a pattern thread and a cup thread as an embroidery back thread. Rayon filament yarn is used for the surface yarn, and spun rayon, cotton yarn or the like is used for the back yarn. The backing yarn is wound around a coreless cup 11 shown in FIG. 3 and stored in the shuttle 12 shown in FIG. 4, and the yarn Y is drawn out from the inner layer side of the cup 11 and used. For this reason, it is necessary to prevent the collapsed shape of the cup between the cup winding process and the embroidery process (outer layer turbulence, traversing, inner layer turbulence, turbulence, etc.). Twisting, finishing oil, wax and the like are applied to adjust the frictional resistance between fibers, and the fiber is wound up into a cup.

[0003]

The embroidery back yarn is rayon,
Conventionally, spun yarns such as cotton have been used, but spun yarns have large variations in strength, and there are many single yarn breaks and fly-outs due to dropouts, and the yarn path guide of the shuttle is clogged or twisted. Because of this, twisting occurs and trouble occurs due to breakage of the back thread during embroidery, and spun yarn is rich in bulk, while thin yarn is expensive and wrapped around one cup There is a problem that the operating rate of the embroidery machine is low due to a short yarn length that can be taken and a frequent exchange of cups. In addition, we use hexagonal tulle ground of polyamide for embroidery base cloth,
It is common to use rayon filament twisted yarn for the surface yarn and cotton yarn for the back yarn cup yarn, but the resulting lace ground consists of three fiber material types, and the same color and gloss of each material Due to the difference, there is a problem that quality is impaired.

In order to solve these problems, when all of the base fabric, the front yarn and the back yarn are made of polyamide fiber or polyester fiber, the back yarn of polyamide fiber or polyester fiber is required. If a backing yarn consisting of filament yarn is provided, it will have high strength and can be made fine denier, so there will be little cutting thread at the time of embroidery, less frequent replacement of cups, excellent same color characteristics, less gloss difference, and beautiful embroidery lace Can be Therefore, a cup yarn made of a filament yarn has been desired. For the same reason, a cop yarn consisting of a filament yarn is also used for the one that embroiders a water-soluble vinylon base fabric called a chemical lace with a front thread and a back thread and leaves only the embroidered part by removing the water-soluble vinylon. Was desired. However, a cup yarn composed of a filament yarn which does not have a problem such as collapse during winding of a cup has not been provided at present.

[0005] The present invention is a non-twisted cup yarn which is made of filament yarn, does not break when the cup is wound, has a smooth unwinding property from the cup, and has little breakage of the cut yarn or the base yarn of the base fabric at the time of embroidery. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to use a synthetic fiber multifilament yarn having an initial tensile resistance: Ykg / mm ² and a single filament denier: D satisfying Y × D ² ≦ 3000, Processed yarn having entanglement, loop fluff, and slack imparted by injection processing, wherein the processed yarn has a denier-up rate of 5% or more and 15% or less, the total number of loop fluff is 2,000 / m or more, and the loop fluff is This is achieved by an embroidery lace cup yarn having a number of fluffs having a length of 0.6 mm or more and 5 or more / 30 or less, a maximum fluff length of 1.0 mm or less, and a tensile strength of 300 g or more.

In the cup yarn of the present invention, the characteristics of the yarn to be supplied to the fluid processing, the bulk height of the yarn after the fluid injection processing, the amount of generated loop fuzz, the distribution of the loop fuzz length, and the tensile strength of the processed yarn are specified. By doing so, there is no collapse when winding the cup, the unwinding property from the cup is good, the amount of yarn wound on the cup increases, and furthermore, it has no real twist, and it is used without twisting, so it is a guide No twisting, etc., rotation of the yarn due to twist movement,
Embroidery can be performed smoothly, and a low-cost cup yarn with few cutting threads can be obtained.

In order to obtain the above-mentioned cop yarn, the present inventors have obtained a cup winding which is a basic property required for a cop yarn in order to obtain a cop yarn instead of a spun yarn of rayon or cotton yarn with a synthetic multifilament yarn. Characteristics (shape collapse, shape stability, etc.), unwinding from a cup, friction characteristics with each yarn guide during embroidery, synthetic fiber multifilament characteristics,
The distribution characteristics of the loop fuzz formed by the fluid jet processing were investigated by changing the supply material, the fluid jet processing conditions, and the processing process.

As a result, it has been found that the initial tensile resistance Y of the multifilament and the single filament denier D greatly contribute to the unwinding property from the cup. Therefore, as a result of various studies, when Y × D ² exceeds 3000 , the tension fluctuation at the time of unwinding from the cup is large, no matter how the loop fuzz distribution is controlled. In the early stage of), entanglement of loop fluff formed by fluid jetting and fluctuation of unwinding tension due to snagging occur frequently, and cut threads are generated at the time of embroidery.
No. ² has found that it is necessary to use a yarn having a size of 3000 or less as a supply yarn.

As the synthetic fiber multifilament yarn, a polyester fiber, a polyamide fiber or the like is preferably used, and a yarn which can be dyed at normal pressure is preferable. For example, a polyester fiber is spun by a spinning method having no god roller at a spinning speed of 6000 m / min or more, and a tan δ (T _max ) representing a structural characteristic of an amorphous portion of the fiber is 110 ° C.
Hereinafter, it is desirable to use a yarn having a tan δ _max of 0.08 or more. In addition, two or more yarns of the same kind may be supplied simultaneously, and further, a composite with a yarn having antistatic properties, a yarn having a different cross-sectional shape and a bright property, or a composite processing with these May be performed. In the composite processing, Y × D
^The shape of the cup and the unwinding property are determined by the higher value of the ^two- valued yarn.
D ² is required to be 3,000 or less.

A so-called Taslan nozzle is used as a nozzle used for the fluid jet processing, which gives loop fluff, entanglement and the like. The air pressure at the time of the fluid jet processing varies depending on the processing speed, the initial tensile resistance of the supplied yarn, the single-filament denier, the cross-sectional shape, and the like, but is processed at a pressure of 5 to 8 kg / cm ² G. In the composite processing of two or more yarns, it is more preferable to supply the yarn to the nozzle at the same feed rate than to use the sheath-core structure yarn supplied at different feed rates.

The properties of the processed yarn after processing are as follows: When the denier-up rate of the raw yarn is less than 5% after the fluid jet processing for the denier of the original yarn, that is, the supply yarn, the shape collapses when the cup is wound. Also, when the rolled-up cup is removed from the rod core, the frictional resistance with the rod core is large, and the cup shape often collapses. In addition, when the denier up ratio is 15% or more, the shape does not collapse when the cup is wound, but the unwinding tension when unwinding from the cup is large, and the length of the yarn that can be wound into the cup becomes short. It is desirable that the denier-up rate be as small as possible so that the shape of the cup winding does not collapse and the shape does not collapse during the transportation of the glass. The preferred denier-up rate is 5% to 7%.

Regarding the loop fuzz structure, a fray counting machine for spun yarn manufactured by Toray Engineering, FRAY COUNTER MODEL D
Using T-104, the average value of the measurement yarn speed of 9 m / min, the measurement time of 10 seconds, and the number of measurements is 5 times, and the distribution of the loop fluff as shown in FIG. 2 is drawn. The value of the total number of loop fluff, that is, the value of fluff length 0mm
The number of fluffs with a fluff length of at least 2,000 / m and a fluff length of at least 0.6 mm (value at a fluff length of 0.6 mm) is 5 to 30 / m, and the maximum fluff length (intersection with the X axis of the fluff distribution) is 1. 0.0mm or less is required, the total number of loop fluff is small, and the loop fluff length is 0.6.
If the number of fluffs of mm or more is large and the maximum fluff length is long, the shape of the cup will be broken, the unwinding property from the cup will be poor, the loop fluff will be entangled, and the ring will be unwound from the inner layer of the cup. A dropout phenomenon occurs.

[0014] In addition, the distribution of the number of loop fuzz is small, the number of fuzz having a loop fuzz length of 0.6 mm or more is small, and the maximum fuzz length is short. Shape collapse occurs at the time of removal from the core. Even if the number of loop fuzz is 2000 or more, the number of fuzz having a loop fuzz length of 0.6 mm or more has a distribution of 4 or less and the maximum fuzz length has a distribution of 1 mm or less. In addition, the total number of loop fluff is 2,000 / m or more, and the number of fluffs having a loop fluff length of 0.6 mm or more is 30 / m or more,
In the case of a distribution having a maximum fluff length of 1.1 mm or more, the formation of the cup is good, but the unwinding property from the cup deteriorates. Therefore, the distribution of the loop fluff needs to be within the scope of the present invention.

If the tensile strength of the processed yarn is less than 300 g, the tensile strength is not enough for various guide resistances at the time of embroidery and the action tension for tightening the embroidery surface thread, and cut yarn is generated.
g or more, preferably 350 g or more.

FIG. 1 shows an example of an apparatus for obtaining such a yarn. One or a plurality of synthetic fiber multifilament yarns 1 having an initial tensile resistance Y (kg / mm ² ) and a single yarn filament denier D having a Y × D ² of 3000 or less are aligned and supplied from a roller 2, Rollers 2 and 4 while applying water to the strip
The entanglement and loop fuzz are imparted by the nozzle 3 installed between the rollers, and then the heat treatment is performed by the heater 5, and subsequently, the rollers 6 and 7 are extended to control the loop fuzz structure, and the loop fuzz is fixed. And then wound up into a yarn package. The heat treatment in the heater 5 aims at shortening the formed loop fluff and lowering the initial tensile resistance of the loop fluff filament.
It is desirable to apply in the range of 150 to 240 ° C. The feed rate of the heat treatment area may be either relaxation or tension treatment,
The processing is performed to such an extent that the loop fluff length can be controlled in the subsequent extension region.

As described above, in order to control the loop fluff structure of the present invention, the fluid jet processing speed, air flow rate, and the like are determined by the supply yarn characteristics such as the initial tensile resistance of the supply yarn, the denier of single yarn, the number of filaments, and the cross-sectional shape. It can be obtained by selecting conditions such as pressure, injection feed rate, heat treatment temperature, heat treatment feed rate, elongation tension, feed rate, and the like.

[0018]

Embodiments of the present invention will be described below in detail. Prior to the description of the examples, evaluation methods of the obtained cup yarn are collectively shown below. Cup shape ：: good shape, without turbulence Δ: Both sides of the cup are turbulent and tend to fall off in the subsequent process. ×: There is a twill drop on both end surfaces of the cup, and there is a collapse in the shape of the cup.

Unwinding property The unwinding tension is measured while unwinding at a yarn withdrawing speed of 10 m / min from the cup, and the fluctuation in tension per 100 m of yarn length (fluctuation due to entanglement of loop fluff) is evaluated as follows. ：: Tension fluctuation 20 g or less. Δ: Tension fluctuation of 20 g or more occurred 5 times or less. ×: Tens of fluctuations of 20 g or more occurred 10 times or more.

Embroidery The embroidery is performed by using 100 pieces of a cup having a winding weight of 2.1 g until the remaining thread amount after embroidering becomes 5% of the winding thread weight, and the cutting thread frequency at that time is evaluated as follows. . ○: Number of cutting thread 2 times or less △: ５〜 5 to 6 times ×: 〃 10 times or more

Examples 1 to 7 and Comparative Examples 1 to 9 An air jet crimper 335II manufactured by Murata Machinery Co., Ltd. was used as a supply yarn using synthetic filament multifilament yarns having various initial tensile resistances and single yarn deniers, and a processing speed of 400 m. / Min, nozzle is T-311 manufactured by Heberline, and the injection feed rate, air pressure, heat treatment temperature, heat treatment feed rate, and elongation area feed rate are variously controlled. Denier-up rate, processed yarn strength, and loop fuzz structure were different. Table 2 shows the evaluation results of the obtained cup yarns.

In Comparative Example 1, 46.6 × 24 f × 2 polyester multifilament yarns having a take-up speed of 7000 m / min were used as the supply yarns, and since Y × D ² was 3,000 or more, unwinding from the cup was performed. Occasionally, fluctuations in the unwinding tension due to the entanglement of the loop fluff occurred frequently, and cut threads were generated during embroidery. Comparative Example 2
Is a supply yarn using 4 x 31.3d-10f polyamide multifilament yarns at a spinning speed of 5500 m / min.
Since D ² is 3,000 or more, the same unwinding property as that of Comparative Example 1,
It was embroidery.

In Example 1, two polyester multifilament yarns 40d-24f × 2 at a spinning take-up speed of 6500 m / min were used as the supply yarns, and Example 2 was a polyester multifilament yarn 47.9 having undergone a usual spinning-drawing process. d-36f × 2
This as a feed yarn, Example 3 a take-up speed of 5500 m / min polyamide multifilament yarns 36.5d-18f × 3 present obtained by a feed yarn, Example 1, 2 and 3 both Y × D ² and The denier up rate against the yarn and the loop fluff structure were satisfied, and the cup winding, unwinding property, and embroidery property were also good.

Comparative Examples 3, 4, 5, 6, 7, 8, 9 and Examples 4, 5, 6, 7 supply 3x polyester multifilament yarns 40d-36f × 6700 m / min. As the yarn, processed yarns of various yarn structures were obtained by controlling the air processing conditions. In Comparative Examples 3 and 4, since the denier up ratio with respect to the original yarn is low, when the yarn is wound around a cup, the yarn in the outermost layer of the cup suffers from turbulence and traversal, and cut yarn is generated during embroidery. Comparative Example 5 has a high denier-up rate with respect to the original yarn, so that there is no problem with the shape of the cup at all. However, during unwinding, fluctuations in the unwinding tension due to the entanglement of the loop fluff and a dropout phenomenon occur. On the other hand, in Comparative Example 6, Since the denier up ratio with respect to the original yarn was low and the number of fluffs with a loop fluff length of 0.6 mm or more was small, the shape of the cup roll was disturbed, and it was defective with a fray drop. In Comparative Examples 7 and 8, the number of fluffs having a loop fuzz length of 0.6 mm or more was large, and the loop fuzz length was too long. Threads frequently occurred. In Comparative Example 9, since the total number of loop fluffs was small and the number of fluffs having a loop fluff length of 0.6 mm or more was also small, the cup winding shape was poor, the turbulence occurred, and the unwinding failure due to trawl occurred frequently. Examples 4, 5, 6, and 7 are shown in Table 1.
And as shown in Table 2, since all the conditions of the present invention are satisfied, excellent performance as a cup yarn is exhibited.

[Table 1]

[Table 2]

Example 8 Spinning speed 6500 m / min, initial tensile resistance 1180 kg / m
m ² , boiling water shrinkage 3%, tan δ (T _max ) 105 ° C, ta
Polyester multifilament yarn 40 denier 36 filament (single filament denier 1.11d) with nδ _max of 0.135, strength of 4.3 g / d and elongation of 43% Y × D ² = 1454
, Three air jet crimpers made by Murata Machinery
Using 335-II, processing speed (speed of roller 6) 400m /
The nozzle is T-311 manufactured by Heberline Co., Ltd., the injection feed rate [{(surface speed of roller 2) − (surface speed of roller 6)} / surface speed of roller 6 × 100] is + 6.67%, and air pressure is 6 kg. /cm
² G, heat treatment temperature 210 ° C., heat treatment feed rate [{(roller 4 surface speed) − (roller 6 surface speed)} / roller 6 surface speed × 100] is -2.74%, elongation or feed rate [｛( Roller 6 surface speed)-(Roller 7 surface speed) ロ ー ラ / Roller 6 surface speed ×
100] at -3.3%. The denier-up rate of the processed yarn obtained is 5%, the total number of loop fluff is 3,400 / m, the number of fluff having a loop fluff length of 0.6 mm or more, 13 / m, the maximum loop fluff length is 0.95 mm, the strength is 450 g, the elongation Degree 43%, boiling water shrinkage 3
%Met.

A 1.3% soft finishing agent was adhered to the processed yarn, treated with a steam set at 100 ° C. for 60 minutes, and made into a cup with a cup winding machine. The yarn length increased by 35%, and a beautifully shaped cup without shape collapse was obtained. Using this cup as embroidery backing yarn, take-up speed 6000m / min, elongation at break 55%, initial tensile resistance 1000
kg / mm ² , knot strength x knot elongation 5000 polyester multifilament 40 denier 8 filament yarn on hexagonal tulle ground, embroidery yarn with a take-up speed of 7000 m / min polyester yarn 100 denier 36 filament An embroidery lace was made using a twisted twin yarn. As a result, there is no thread at the time of unwinding from the cup, and since the cup yarn is untwisted, embroidery can be performed smoothly without trouble due to twist movement, twisting, etc. About 5
%, And good results were obtained. When the obtained lace ground was dyed and finished, a beautiful lace ground having the same color property of the embroidery base cloth, the front yarn and the back yarn was obtained.

Example 9 Nylon 66 50 denier 24 filament yarn, strength 5.3 g
/ D, elongation 38%, initial tensile resistance 600 kg / mm ² , Y × D
² = 2604, boiling water shrinkage of 9% were aligned, and processing speed was 200m / min, injection feed rate + 16.3%, air pressure was 7.0kg / cm ² G, heat treatment temperature was 200 ° C, as in Example 1. Fluid jet processing was performed at a heat treatment feed rate of + 0.76% and an elongation feed rate of -1.0%.

The denier up rate of the obtained processed yarn is 12
%, Total number of loop fluff 3250 / m, loop fluff length 0.6mm
The number of fluff above 13 / m, maximum loop fluff length 0.9mm, strong
500 g, elongation 40%, boiling water shrinkage 8%. Attach 1.2% of softening agent to this processed yarn, and use steam set 100
When a cup was prepared by a cup winding machine by treating at 60 ° C. for 60 minutes, the amount of wound yarn was increased by 25% as compared with the cotton yarn No. 70 twin yarn, and a beautifully shaped cup was obtained without shape collapse.

A lace is formed using this cup yarn as an embroidery backing yarn, a water-soluble vinylon fabric as a base fabric, and a nylon 100 100 denier 36 filament twin yarn as an embroidery surface yarn. The water-soluble vinylon is dissolved and then dyed. Finished. There was no breakage of the back thread at the time of embroidery and no trouble in unwinding, and a beautiful chemical lace ground was obtained.

[0030]

According to the present invention, as a cop yarn used for an embroidery backing yarn for embroidery lace or chemical lace, a conventionally used spun yarn using a synthetic fiber multifilament yarn which has not been used conventionally is used. There are few troubles such as cutting thread at the time of embroidery, clogging of the yarn path guide by fly, twisting due to twist movement, and cutting thread caused by winding of fluff due to rotation of the thread. An ideal embroidery lace cup yarn in which the amount of winding yarn to be formed increases and embroidery efficiency and operation rate increase is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an apparatus for obtaining a cup yarn of the present invention.

FIG. 2 is a reference graph of a loop fuzz distribution.

FIG. 3 is a perspective view showing an example of a cup.

FIG. 4 is an explanatory view showing a shuttle accommodating a cup;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Synthetic fiber multifilament yarn 2 ... Feed roller 3 ... Nozzle 4 ... Delivery roller 5 ... Heat treatment heater 6 ... Second delivery roller 7 ... Third delivery roller 8 ... Winding roller 11 ... Cup 12 ... Shuttle Y ... Cup yarn

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D02G 1/00-3/48 D02J 1/00-13/00

Claims (2)

(57) [Claims] 1. A synthetic fiber multifilament yarn having an initial tensile resistance: Y kg / mm ² and a single filament denier: D satisfying Y × D ² ≦ 3000, entangled, looped, and slacked by a fluid jetting process. A denier-up rate of the processed yarn with respect to the original yarn of 5% or more,
% Or less, the total number of loop fuzz is 2,000 / m or more, the number of fuzz with a loop fuzz length of 0.6 mm or more is 5 / m or more, 30 / m or less, the maximum fuzz length is 1.0 mm or less, and the tensile strength is 300 g. This is the embroidery lace cup yarn. ^2. Synthetic fiber multifilament yarns satisfying Y × D ² ≦ 3000 are subjected to entanglement, loop fluff, and slack by a fluid jet process, and then subjected to a heat treatment, followed by a stretching process. The method for producing a cup yarn for embroidery lace according to claim 1, wherein