JP2004100058A - Multicolor composite structure luminous fiber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multicolored composite structure luminous fiber which emits identifiable sufficiently bright light in a dark place, enables the selection of various colors in a bright place, has a luminous performance, and can develop highly many colors. <P>SOLUTION: This multicolor composite structure luminous fiber is characterized by blending luminous fibers containing a luminous pigment with colored fibers in conditions satisfying the follows (1) and (2). (1) : The ratio of the fineness (D) of the luminous fibers : the fineness (d) of the colored fibers is 2:1 to 10:1. (2) : A twist coefficient T represented by the expression: T=(D+d)<SP>1/2</SP>×t is 8,000 to 18,000. Therein, D is the total fineness (dtex) of the luminous fibers; d is the total fineness (dtex) of the colored fibers; t is the ply twist number (twists/m) for twisting the luminous fibers with the colored fibers. <P>COPYRIGHT: (C)2004,JPO

Description

【００５９】
＜実施例２＞
蓄光性顔料を２０重量％添加したポリプロピレンポリマーを単独で溶融紡糸した。得られた蓄光繊維は、１００Ｔ（デシテックス）／１２ｆ（フィラメント）極淡黄色の糸であった。
【００６０】
着色糸は、市販の４４Ｔ／１４ｆマリンブルー色、６−ナイロンを成分とする先染め糸を用いた。
【００６１】
まず、１００Ｔ／１２ｆの蓄光繊維に　Ｓ６５０ｔ／ｍの下撚りを入れ、この糸を２本と４４Ｔ／１４ｆ着色糸を合撚機で　Ｚ６５０ｔ／ｍの上撚りを入れ、６５℃＊２０分の熱セットを実施し、２４４Ｔの複合繊維を得た（表２）。
【表２】

【００６２】
＜実施例３〜４＞
蓄光糸の鞘成分ポリマーをポリエチレンテレフタレート、ポリプロピレンとした以外その他の条件は全て実施例１と同条件で、２４４Ｔの複合繊維を作成した（表３）。
【表３】

【００６３】
＜実施例５＞
実施例１で、着色糸に市販の７８Ｔ／２４ｆの６−ナイロンを成分とした原着糸を用いて、撚り回数Ｚ６００ｔ／ｍで引き揃え合撚し、２７８Ｔの複合繊維を得た（表４）。
【表４】

【００６４】
＜実施例６＞
実施例１で用いた１００Ｔ／１２ｆの蓄光繊維に　Ｓ６５０ｔ／ｍの下撚りを入れ、この糸２本をＺ４００ｔ／ｍで引き揃え合撚し、２００Ｔ／２４ｆ蓄光繊維を作成した。これを芯糸とし、市販の７８Ｔ／２４ｆの６−ナイロンを成分とした原着糸をＺ６００ｔ／ｍでカバーリングし、２７８Ｔの複合繊維を得た（表５）。
【表５】

【００６５】
＜実施例７〜８、比較例１＞
実施例６の２００Ｔ／２４ｆ蓄光繊維２本と、市販の７８Ｔ／２４ｆ原着糸１本を引き揃えて、以下の上撚り数で引き揃え合撚し、４７８Ｔの複合繊維を得た。
Ｚ１０００ｔ／ｍ　（比較例１）、Ｚ８００ｔ／ｍ　（実施例７）　、Ｚ４００ｔ／ｍ　（実施例８）、（表６）。
【表６】

【００６６】
＜実施例９〜１０、比較例２〜３＞
実施例７〜８で、着色糸に市販の４４Ｔ／２４ｆ先染め糸を使用し、以下の上撚り数で引き揃え合撚し、４４４Ｔの複合糸を得た。
【００６７】
Ｚ１０００ｔ／ｍ（比較例２）、Ｚ８００ｔ／ｍ（実施例９）、Ｚ４００ｔ／ｍ（実施例１０）、Ｚ３００ｔ／ｍ（比較例３）、（表７）。
【表７】

【００６８】
＜実施例１１〜１２、比較例４〜５＞
実施例６の２００Ｔ／２４ｆ蓄光繊維を芯糸とし、着色糸として市販の４４Ｔ銀ラメ糸（１２０切り、ベースフィルム：ポリエステル、蒸着金属：銀、保護層として樹脂コーティング）を使用し、蛇腹撚り手法で、芯糸に以下の上撚り数で巻き付け、２４４Ｔの複合糸を得た。
【００６９】
Ｚ１４００ｔ／ｍ（比較例４）、Ｚ１０００ｔ／ｍ（実施例１１）、Ｚ８００ｔ／ｍ（実施例１２）、Ｚ４００ｔ／ｍ（比較例５）、（表８）。
【表８】

【００７０】
＜実施例１３〜１６＞
２００Ｔ／２４ｆ蓄光繊維に、着色糸として、有色の４４Ｔラメ糸（１２０切り、基材フィルム層に染料又は顔料を混ぜた接着剤層と樹脂コーティング又はフィルムラミネートの保護層を有する）で、黄色（実施例１３）、黄緑（実施例１４）、ベージュ（実施例１５）、ピンク色（実施例１６）を有するラメ糸を使用し、蛇腹撚り手法で、芯糸に上撚りＺ８００ｔ／ｍで巻き付け、２４４Ｔの複合糸を得た（表９）。
【表９】

【００７１】
＜実施例１７〜１８、比較例６〜８＞
実施例１で、芯成分ポリプロピレンポリマーへの蓄光剤添加量を１０重量％、とした以外は同条件で２４４Ｔの複合繊維（実施例１７）を得た。又、添加量を３０重量％とした複合繊維を実施例１８、添加量を７．５％、３５．０％、４０．０％としたものをそれぞれ、比較例６、７、８とする。ただし、比較例８は、満足な蓄光繊維を採取することができなかった（表１０）。
【表１０】

【００７２】
それぞれの性能評価を表１１に示す。
【表１１】

【００７３】
【発明の効果】
上述の通り、本発明の多色性複合構造蓄光繊維は、着色糸と蓄光繊維を一定条件で重ね合わせることによって、明るい場所では巻き付いた着色糸の色と同系色に見え、暗くなると蓄光性顔料の色に発光しているように見える。さらに、巻き付いた着色糸の色を選択する事で、極めて多色の色展開が可能となる。[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, in a dark place, light emission of sufficient brightness can be seen, and in a bright place, various colors can be selected. The present invention relates to a color composite structure phosphorescent fiber.
[0002]
[Prior art]
Until now, light-storing fibers that store light in bright places and are visible even in dark places have been used for fishing lines, ropes, and the like because of their characteristics. The color was sufficient and there was no need to wear another color.
[0003]
However, recently, phosphorescent fibers have been widely used in fields requiring fashionability. However, since the luminous pigment used for the luminous fiber itself has a specific color tone, there is a current situation in which it is difficult to obtain a degree of freedom in color.
[0004]
As a phosphorescent fiber having a color, a fiber in which a phosphorescent pigment is uniformly kneaded into the fiber itself (for example, see Patent Document 1), a core containing a phosphorescent pigment, and a sheath containing a coloring pigment in a sheath Fiber having a structure (for example, see Patent Documents 2 and 3). When two kinds of yarns having different colors are mixed, a fiber in which a luminous pigment is added to the mixed yarn (for example, see Patent Document 4). It has been known.
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 1-111075 [Patent Document 2]
JP 2001-214333 A [Patent Document 3]
JP 2000-96349 A [Patent Document 4]
JP 2001-226843 A
[Problems to be solved by the invention]
However, these conventional techniques have the following problems.
In the case of a fiber in which the luminous pigment is uniformly kneaded into the fiber itself (see, for example, Patent Document 1), the luminous storage and emission of the luminous pigment are inhibited by the coloring pigment, or the luminous agent itself is exposed to moisture and the like. In the case of weakness, there is a problem that the fiber surface must be covered again with a water-repellent resin.
[0007]
Furthermore, fibers having a core-sheath structure in which a core contains a luminous pigment and a sheath contains a coloring pigment (see Patent Documents 2 and 3) have the following problems due to their structures.
[0008]
In other words, it is possible to select a certain amount of color, but since the sheath component containing the coloring pigment covers the core component containing the phosphorescent pigment, if the amount of the coloring pigment contained in the sheath portion is not limited, the phosphorescent There is a problem that the phosphorescent / emitted light of the pigment becomes insufficient, so that the pigment is inevitably limited to light colors. Further, since the sheath component covers the core component, when the light is emitted in a dark place, a color in which the color of the coloring pigment of the sheath component and the light emission of the luminous pigment of the core component are mixed is confirmed.
[0009]
In addition, in the case of light color, the above method can be adopted only when the thread is thick, but for clothing, sewing thread, fine thread such as embroidery thread with a fineness of 250 dT or less, by the particles of the coloring pigment, When the light-storing pigment particles absorb light, the light absorption is inhibited, and when the particles emit light, the ratio of light emission is increased, and there is a problem that the light-absorbing and light-emitting performance of the light-storing agent is impaired.
[0010]
Further, when a yarn containing a luminous pigment and a yarn containing a color pigment are mixed (see Patent Document 4), both yarns are uniformly mixed, so that in a bright place, a color that is the same as that of a general fiber is used. While holding, it does not become a multicolor composite structure luminous fiber in which light emission is clearly visible in a dark place.
[0011]
As described above, when the phosphorescent fiber is used in a field where fashionability is required, it is required that the light emitted by the phosphorescent pigment be seen firmly in a dark place, while it is not different from a general fiber in a bright place. While various color variations are required, the above-described problems have conventionally been encountered. An object of the present invention is to provide a polychromatic phosphorescent fiber that solves the above problems.
[0012]
[Means for Solving the Problems]
The present invention is a multicolor composite structure phosphorescent fiber, wherein the phosphorescent fiber containing the phosphorescent pigment and the colored yarn are twisted under conditions satisfying the following (1) and (2). .
[0013]
(1) The ratio between the fineness (D) of the phosphorescent fiber and the fineness (d) of the colored yarn is 2: 1 to 10: 1.
(2) Twisting factor T represented by (D + d) ^1/2 * t is 8000 to 18000, where D = total fineness of the luminous fiber (decitex), d = total fineness of the colored yarn (decitex), t = luminous Number of times of twisting fiber and colored yarn (times / m)
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The multicolor composite phosphorescent fiber of the present invention is one in which the phosphorescent fiber and the colored yarn are twisted under specific conditions.
The luminous fiber of the present invention contains a luminous pigment.
[0015]
The luminous pigment refers to a pigment that absorbs various lights (excitation sources) such as visible light and ultraviolet light, stores it as energy, and emits light in a dark place by the energy after the excitation source is stopped. Incidentally, light emission is visible only in a dark place, and light absorption and light emission can be repeated.
[0016]
Examples of the component of the luminous pigment include strontium aluminate (SrAl ₃ O ₄ ), zinc sulfide, zinc oxide and the like. Among them, strontium aluminate (SrAl ₃ O ₄ : Eu activated by dysprosium and europium) is preferable. , Dy). That is, strontium aluminate (SrAl ₃ O ₄ : Eu, Dy) activated with dysprosium and europium has excellent light-emitting properties, is less deteriorated by ultraviolet rays, has excellent durability, and contains a radioactive substance. This is because there is no effect on the human body.
[0017]
The average particle size of the luminous pigment is preferably 0.1 to 10 μm. More preferably, it is 0.3-5 μm, most preferably 0.5-2 μm. Coarse particles having a diameter of more than 10 μm are not preferable because they cause breakage in the spinning and drawing steps. Further, particles smaller than 0.1 μm tend to agglomerate, making it very difficult to uniformly disperse the particles in the polymer. In general, as the particle size of the luminous pigment decreases, the luminous performance often decreases significantly as the particle size decreases, which is not preferable in terms of performance.
[0018]
The cross-sectional shape of the phosphorescent fiber is not limited, but may be a triangular cross-section other than a round cross-section, a square cross-section, or any other irregular cross-sectional shape as necessary, such as texture and gloss. Alternatively, a single yarn obtained by simply dispersing a predetermined amount of luminous pigment in one fiber may be used, but the luminous pigment may fall off during the spinning step, the subsequent processing step, and use as a product, or water or heat may be generated. A composite fiber having a core-sheath structure in which a core component polymer in which a luminous pigment is present and a thermoplastic sheath component polymer is preferable so as not to be affected.
[0019]
Further, the structure of the core portion may be one core or multiple cores. However, in consideration of the average particle diameter of the luminous pigment to be contained, a one-core type is preferable.
[0020]
The core component polymer is preferably composed of a polyolefin. This is because the light-storing material deactivates the light-storing performance by hot water, so that the light-storing material does not come into contact with moisture by the core component polymer having low water absorption.
[0021]
The sheath component polymer is preferably at least one thermoplastic polymer selected from the group consisting of polyester, polyamide and polyolefin.
[0022]
Further, the composite ratio of the core component polymer and the sheath component polymer is defined by the ratio of the cross-sectional area, and the core component polymer: the sheath component polymer is preferably 20 to 80:80 to 20.
[0023]
The content of the luminous pigment depends on the type of the fibrous polymer, but is preferably 25% by weight or less based on the entire luminous fiber. In particular, the content of the luminous pigment with respect to the core component in the case of the above-mentioned core-sheath structure is preferably from 10 to 30% by weight. If the content is small, the light storage performance is weak, and the desired performance cannot be obtained. Further, even when the content becomes 30% by weight or more, the light storage performance does not greatly differ, and the fiber forming property tends to decrease due to the incorporation of many foreign substances.
[0024]
On the other hand, as the type of the colored yarn, a yarn-dyed yarn, a soaked yarn or a glitter yarn is preferable. The term "yarn-dyed yarn" refers to a yarn dyed with a dye in the state of a yarn before being wound around the luminous fiber. The soaked yarn refers to a yarn that has been colored and produced by adding a coloring pigment or the like in advance during the production of the fibrous polymer. The lame yarn is a narrow film yarn having an apparent luster slit-cut after providing a metal processing layer and / or a coloring layer on the resin film layer. The metal processing is to provide a metal deposition layer or a metal thin film layer, and the coloring layer is to provide, for example, a resin / adhesive layer containing a pigment or a dye. If the abrasion resistance is required, it is preferable that the metal processing layer and the coloring layer are covered with a protective layer, and the so-called sandwich structure in which the metal processing layer and the coloring layer are sandwiched between the base resin layers. Is more preferred. The length of the lame yarn in the direction parallel to the metal working layer or the colored layer is longer than the length in the direction of the orthogonal axis, and the ratio of long axis / short axis is preferably 1/1 to 5/1.
[0025]
It is necessary to consider the compatibility with the polymer used for the colored yarn as the color pigment used for coloring the original yarn or the dye for the yarn to be dyed, but in principle, it is free according to the color to be colored. Is not particularly limited as long as it is a general one. The amount of the coloring pigment or dye must be determined in consideration of the properties of the polymer used for the colored yarn, but is in principle free. Further, the color is not limited to one color, and may be multicolor.
[0026]
It is also possible to use a dark color for the colored yarn to make the color appear darker. In this case, the degree of light storage is relatively low, but when darkened, light emission is sufficiently visible, and there is no particular problem. However, in order to maximize the light storage performance, the concentration of the colored yarn is appropriately selected.
[0027]
In addition, if necessary, a fluorescent agent, a matting agent, a weathering agent, a UV absorber, an antioxidant, an antibacterial agent, a bactericide, a moisture absorbent, a water absorbing agent, a water repellent, Deodorants, deodorants, fragrances, and the like may be mixed.
[0028]
If the phosphorescent fiber is too thin, it becomes difficult to obtain a sufficient light emitting property, and if a required amount of the phosphorescent agent is mixed, particles of the phosphorescent agent stick out from the fiber surface. Therefore, the single fiber fineness of the phosphorescent fiber is preferably 1 dT or more and 250 dT or less. However, it is not particularly limited to this range.
[0029]
Further, the ratio of the fineness (D) of the luminous fiber to the fineness (d) of the colored yarn is limited to 2: 1 to 10: 1. Generally, the physical properties of the colored yarn are better than those of the phosphorescent fiber. For example, the colored yarn has a higher tensile strength. Therefore, it is more preferable that the colored yarn appears to be wrapped around the phosphorescent yarn.Moreover, if the fineness of the phosphorescent yarn is too small, it is difficult to obtain sufficient light emission and the strength cannot be maintained. It is.
[0030]
In addition, the twist coefficient T represented by (D + d) ^1/2 * t is limited to the range of 8000 to 18000. Here, D represents the total fineness (decitex) of the luminous fiber, d represents the total fineness (decitex) of the colored yarn, and t represents the number of twists (times / m) of combining the luminous yarn and the colored yarn. This greatly affects the appearance of the multicolor composite structure phosphorescent fiber in combination with the fineness ratio described above. If the twist coefficient is too low, colors appear sparse in bright places, and do not appear to be so-called colors. If the twist coefficient is too high, the phosphorescent fiber is too covered with the colored yarn, and sufficient light emission cannot be obtained in a dark place.
[0031]
It is preferable that the phosphorescent fiber and the colored yarn are twisted by draw-twisting, covering, and bellows twisting.
[0032]
When both the light-storing fiber and the colored yarn have a round cross-section, it is preferable to use the twisting and twisting and covering.
[0033]
Aligning and twisting is a method of aligning and twisting two or more yarns. Above all, it is preferable not to perform single twisting in which untwisted yarns are twisted, but to perform twisting in which a twisted yarn is twisted. More preferably, in order to be wound neatly and to prevent the torque of the winding from remaining, a ply twist in which a yarn twisted in the same direction is twisted in the opposite direction is preferable. However, a reversely twisted yarn may be used as necessary, for example, to improve the bulkiness of the twisted yarn. The ratio of the number of twists of the upper twist to the lower twist is preferably from 0.3 to 1.0.
[0034]
Covering is a method in which a sheath yarn is wound around a core yarn while rotating another yarn around the yarn.In this case, a luminous yarn may be used for either the core yarn or the sheath yarn. It is preferable to use a phosphorescent yarn as the core yarn in consideration of productivity, quality stability and the like.
[0035]
When a yarn having a high degree of irregularity, such as a lame yarn, is used as a colored yarn, bellows twisting, round twisting, hagoromo twisting, and the like are common, but in consideration of the quality and production efficiency of the ply twisted yarn, bellows twisting is preferable.
[0036]
Bellows twisting is a method in which a flat yarn having a high degree of irregularity is wound so as not to be twisted, and the wound yarn and the wound yarn are alternately wound at regular intervals.
[0037]
Circular twisting is a method in which a flat yarn having a high degree of irregularity is wound without gaps while being twisted. Hagoromo twist is a method in which a flat yarn having a high degree of irregularity is roughly wound while being twisted.
[0038]
In the case of the round twist, since the colored yarn having a high degree of irregularity is wound without any gap, there is a problem that the phosphorescent yarn cannot be seen. In the case of haori twist, there is a gap between the colored yarns wound around the luminous yarn, but the colored yarn with a high degree of irregularity is twisted by untwisting the yarn and wound around the luminous yarn. When a step is formed and the texture is impaired, or when used as an embroidery thread, for example, the thread is caught by a needle hole or a guide, and the thread is easily broken or twisted.
[0039]
The shape of the yarn having a high degree of irregularity suitable for bellows twisting is preferably a flat, elliptical, square cross section such as a cross section, or a cross-shaped cross section.
[0040]
When it is necessary to improve glossiness or texture, the degree of irregularity of the phosphorescent fiber may be high. In that case, entangled twist or crossed twist may be used.
[0041]
The entanglement twist is a method in which a single thinner yarn is wound around a flat yarn having a higher degree of irregularity than a yarn having a higher degree of irregularity.
[0042]
Cross twisting is a method of winding two thinner yarns around a flat yarn having a high degree of irregularity than the yarn having a high degree of irregularity so that the winding directions are reversed.
[0043]
Even when a preferable twisting method is selected, if the winding pitch is shifted, the color does not look uniform. Therefore, it is preferable to make the winding pitch uniform.
[0044]
It is preferable that the light-storing fiber and the colored yarn are tightly wound around in terms of luminosity and light-emission performance, and operability such as guide and needle hole passage properties. Even when a gap is formed between the phosphorescent fiber and the colored yarn due to various conditions, the apparent diameter of the multicolor composite phosphorescent fiber should be within 20%, preferably within 10%, of the case where it is closely wound. Is preferred.
[0045]
For example, when the sheath yarn is wound around the core yarn (the core yarn and the sheath yarn indicate either the phosphorescent fiber or the colored yarn, respectively), the tension of the winding is loose, or the tension is firmly applied in the wound state. However, since the shrinkage of the sheath yarn is smaller than the shrinkage ratio of the core yarn, the tension is firmly applied when the sheath yarn is partially lifted from the core yarn after heat setting, or when the sheath yarn is a lame yarn. It is preferable to avoid a state where there is a portion that is raised in the width direction. Therefore, although it is natural to wind tightly, it is preferable that the difference between the boiling water shrinkage of the core yarn and the boiling water shrinkage of the sheath yarn is 10% or less. In addition, when the sheath yarn is a lame yarn, the distance from the core yarn at the portion floating in the width direction of the lame yarn is within 20%, preferably 10%, of the diameter of the polychromatic composite phosphorescent fiber at the non-raised portion. It is preferably within the range.
[0046]
Further, the phosphorescent fiber and the colored yarn need not be one by one, and either one or both may be one or more.
The fineness of the polychromatic composite structure phosphorescent fiber is preferably 100 dT or more and 500 dT or less. More preferably, it is 200 dT or more and 500 dT or less, but it is not limited to this range.
[0047]
Hereinafter, an example of the manufacturing method will be described. However, the manufacturing method is not limited to the following method.
The phosphorescent fiber is manufactured by the following method, for example, when it has a core-sheath structure. First, a masterbatch is prepared by mixing a sufficiently dried luminous pigment with a polymer as a core component. The master batch thus obtained and the thermoplastic polymer of the sheath component are introduced into a die at a predetermined ratio, and melt spinning is performed to obtain a phosphorescent fiber having a core-sheath structure.
[0048]
The colored yarn is manufactured by the following method, for example, in the case of the original yarn. First, a masterbatch is prepared by mixing a coloring pigment with a polymer to be a soaked yarn. Melt spinning is performed from the resulting masterbatch and the polymer to be a colored yarn to obtain a colored yarn.
[0049]
Next, the phosphorescent fiber and the colored yarn produced by the above-described method are wound by each method such as drawing and twisting, covering, bellows twisting, twisting, and cross twisting.
[0050]
The multicolor composite phosphorescent fiber obtained by the present invention can be used for clothing and household goods. For example, curtains, roll screens, wall hangings, wall cloths, lamp shades, fluorescent light umbrellas, bedspreads, futon covers, carpets, toilet covers, mats, hats, artificial flowers, various strings, narrow tapes, signs, work Can be used for ropes, tent ropes, carpets for emergency walkways, slippers, general clothing, sportswear, raincoats, night work clothing, doll costumes, bridal costumes, etc. Among them, it is suitable for embroidery yarns and lace yarns in which the dyeing step can be omitted.
[0051]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples. First, an evaluation method will be described.
(Polychromatic evaluation)
Regarding the multicolor property of the composite fiber, the prototype "multicolor composite structure phosphorescent fiber" is wound around an aluminum plate so that the thread is three times overlapped, so that the phosphorescent thread and the colored thread do not look like a striped pattern. It was visually evaluated by 10 humans as to whether it was visible or not, and represented by a five-point scale.
<Evaluation>
5:10 Judgment that all seem at first glance 4: Judgment that 8-9 people seem at first glance 3: Judgment that 6-8 people seem at first glance 2: When 4-6 seem at first glance Judgment 1: Two to four people judge that it looks at first glance
(Emission evaluation)
Luminescence was measured by winding the prototype "multicolor composite structure phosphorescent fiber" around an aluminum plate so that the yarn was overlapped three times, and storing it in a light-shielded state for 24 hours or more. Then, using a regular light source fluorescent lamp D65, about 1000 lux Irradiation was carried out for 30 minutes at an illuminance of, and after the irradiation was stopped, 10 people visually judged whether or not the sample was shining in a completely dark state, and expressed by a five-step evaluation.
<Evaluation>
5:10 Answer that all 10 people can confirm light emission (can specify the position of the sample) 4: 8-9 people can confirm light emission (can specify the position of the sample) 3: Answer 6-6 to 8 people Answer 2: Can confirm (can identify sample position) Answer 2: 4 to 6 can confirm light emission (can identify sample position) Answer 1: 2 to 4 can confirm light emission (specify sample position) I can answer)
(Operability evaluation)
When embroidering the prototype “multicolor composite structure phosphorescent fiber” on polyester fabric, the yarn unwinding property, guide passing property, embroidery needle hole passing property, and thread breaking property were evaluated in three stages (○, △, × ).
[0054]
In the following examples and comparative examples, strontium aluminate (SrAl ₃ O ₄ : Eu, Dy, average particle diameter 1.0 μm) activated with dysprosium and europium was used as the luminous pigment.
[0055]
The general method of the total fineness (D, decitex) of the phosphorescent fiber, the total fineness of the colored yarn (d, decitex), the fineness ratio of each other, and the number of times of twisting (t, times / m) for combining the luminous fiber and the colored yarn are as follows. The twist coefficient (T) was calculated by the formula of (D + d) ^1/2 * t.
[0056]
<Example 1>
Core-sheath type composite fibers (conjugate fibers) were spun by melt spinning using a polypropylene polymer containing 20% by weight of a luminous pigment as a core component and 6-nylon as a sheath component. The obtained phosphorescent fiber was a 100T (decitex) / 12f (filament) ultra-light yellow yarn (boiling water shrinkage 8%) having a core: sheath ratio of 1: 3.
[0057]
As the colored yarn, a commercially available 44T / 14f marine blue color, yarn-dyed yarn containing 6-nylon as a component (boiling water shrinkage 2%) was used.
[0058]
First, S650 t / m priming is put into a 100T / 12f phosphorescent fiber, two of these yarns and 44T / 24f coloring yarn are put into a Z650t / m top twisting machine with a twisting machine, and heat is applied at 65 ° C for 20 minutes. The set was performed to obtain a 244T conjugate fiber (Table 1).
[Table 1]

[0059]
<Example 2>
A polypropylene polymer to which 20% by weight of a luminous pigment was added was melt-spun alone. The obtained phosphorescent fiber was a 100T (decitex) / 12f (filament) ultra-light yellow yarn.
[0060]
As the colored yarn, a commercially available 44T / 14f marine blue color, yarn-dyed yarn containing 6-nylon as a component was used.
[0061]
First, S650 t / m priming is put into a 100T / 12f phosphorescent fiber, and two of these yarns and 44T / 14f colored yarn are put into a Z650t / m top twisting machine using a twisting machine, and heat is applied at 65 ° C for 20 minutes. The set was performed to obtain a 244T conjugate fiber (Table 2).
[Table 2]

[0062]
<Examples 3 and 4>
A 244T conjugate fiber was prepared under the same conditions as in Example 1 except that the sheath component polymer of the phosphorescent yarn was polyethylene terephthalate and polypropylene (Table 3).
[Table 3]

[0063]
<Example 5>
In Example 1, using a commercially available soaked yarn having a component of 78T / 24f 6-nylon as a colored yarn, the yarn was drawn and twisted at a twist number of Z600t / m to obtain a 278T conjugate fiber (Table 4). ).
[Table 4]

[0064]
<Example 6>
A 100 T / 12 f phosphorescent fiber used in Example 1 was twisted with S650 t / m and twisted and twisted at 400 t / m to prepare a 200 T / 24 f phosphorescent fiber. This was used as a core yarn, and a soaked yarn containing commercially available 78T / 24f 6-nylon as a component was covered at Z600 t / m to obtain a 278T composite fiber (Table 5).
[Table 5]

[0065]
<Examples 7 and 8, Comparative Example 1>
Two 200T / 24f light-storing fibers of Example 6 and one commercially available 78T / 24f spun yarn were aligned and twisted together with the following number of twists to obtain a 478T conjugate fiber.
Z1000t / m (Comparative Example 1), Z800t / m (Example 7), Z400t / m (Example 8), (Table 6).
[Table 6]

[0066]
<Examples 9 to 10, Comparative Examples 2 to 3>
In Examples 7 and 8, a commercially available 44T / 24f yarn-dyed yarn was used as the colored yarn, and the yarns were aligned and twisted with the following number of twists to obtain a 444T composite yarn.
[0067]
Z1000t / m (Comparative Example 2), Z800t / m (Example 9), Z400t / m (Example 10), Z300t / m (Comparative Example 3), (Table 7).
[Table 7]

[0068]
<Examples 11 to 12, Comparative Examples 4 and 5>
The 200T / 24f phosphorescent fiber of Example 6 was used as a core yarn, and a commercially available 44T silver glitter yarn (120 cut, base film: polyester, vapor-deposited metal: silver, resin coating as a protective layer) was used as a colored yarn, and a bellows twisting method was used. Then, the core yarn was wound with the following number of twists to obtain a composite yarn of 244T.
[0069]
Z1400 t / m (Comparative Example 4), Z1000 t / m (Example 11), Z800 t / m (Example 12), Z400 t / m (Comparative Example 5), (Table 8).
[Table 8]

[0070]
<Examples 13 to 16>
A 200T / 24f phosphorescent fiber is a colored 44T lame yarn as a colored yarn (120 cuts, having an adhesive layer mixed with a dye or pigment in a base film layer and a protective layer for resin coating or film lamination) and yellow ( Example 13) Using a lame yarn having a yellow-green color (Example 14), a beige color (Example 15), and a pink color (Example 16), using a bellows twisting method, winding the core yarn around the core yarn at Z800 t / m. 244T composite yarn was obtained (Table 9).
[Table 9]

[0071]
<Examples 17 to 18, Comparative Examples 6 to 8>
A 244T conjugate fiber (Example 17) was obtained under the same conditions as in Example 1 except that the amount of the luminous agent added to the core component polypropylene polymer was changed to 10% by weight. The composite fiber with the added amount of 30% by weight is Example 18, and those with the added amount of 7.5%, 35.0%, and 40.0% are Comparative Examples 6, 7, and 8, respectively. However, in Comparative Example 8, a satisfactory phosphorescent fiber could not be collected (Table 10).
[Table 10]

[0072]
Table 11 shows each performance evaluation.
[Table 11]

[0073]
【The invention's effect】
As described above, the multicolor composite phosphorescent fiber of the present invention is obtained by superimposing the colored yarn and the phosphorescent fiber under certain conditions, so that the color looks similar to the color of the wound colored yarn in a bright place, and the phosphorescent pigment becomes darker. It appears to be emitting light of the color. Further, by selecting the color of the wound colored yarn, extremely many colors can be developed.

Claims (6)

A phosphorescent fiber having a multicolor composite structure, wherein a phosphorescent fiber containing a phosphorescent pigment and a colored yarn are twisted under conditions satisfying the following (1) and (2).
(1) The ratio of the fineness (D) of the phosphorescent fiber to the fineness (d) of the colored yarn is 2: 1 to 10: 1 (2) (D + d) ^1/2 * t, and the twist coefficient T is 8000. ~ 18000
Here, D = total fineness of the phosphorescent fiber (decitex), d = total fineness of the colored yarn (decitex), t = number of twists (twice / m) for twisting the phosphorescent fiber and the colored yarn The multicolor composite phosphorescent fiber according to claim 1, wherein the phosphorescent fiber is a core-sheath composite fiber in which a core component polymer containing a phosphorescent pigment and a thermoplastic sheath component polymer are bonded. 3. The multicolor composite structure phosphorescent fiber according to claim 2, wherein the core component polymer is a polyolefin and the phosphorescent fiber contains a phosphorescent pigment in an amount of 10 to 30% by weight based on the core component. 4. The multicolor composite structure phosphorescent fiber according to claim 2, wherein the sheath component polymer is at least one kind of thermoplastic polymer selected from the group consisting of polyester, polyamide and polyolefin. The multicolor composite structure phosphorescent fiber according to any one of claims 1, 2, 3, and 4, wherein the colored yarn is a yarn-dyed yarn, a soaked yarn, or a lame yarn. The multicolor composite according to any one of claims 1, 2, 3, 4, and 5, wherein the colored yarn and the phosphorescent fiber are twisted in any one of a form of twisting, covering, and bellows twisting. Structure phosphorescent fiber.