阅读说明：本技术 线绳和帽子 (Cord and hat ) 是由 木下史也 峰真吾 于 2020-02-27 设计创作，主要内容包括：提供一种抑制使用单丝时产生的独特的光泽感,并且刚性、形态稳定性优异的线绳。上述线绳是用加工丝被覆满足下述(1)～(3)的合成纤维单丝A和/或满足下述(1)的单丝B的周围,并使用满足下述(4)～(5)的包覆纱制作而成的。(1)纤度150dtex以上且3000dtex以下。(2)受光角0～80°的最大反射强度为50以下。(3)最大反射强度相对于最小反射强度之比(最大反射强度/最小反射强度)为2.8以下。(4)加工丝的纤度为50dtex以上。(5)包覆纱的最大反射强度相对于最小反射强度之比(最大反射强度/最小反射强度)为2.8以下。上述线绳优选用于帽子。(Provided is a string which suppresses the unique luster feeling generated when using monofilaments and has excellent rigidity and form stability. The cord is produced by covering the periphery of a synthetic fiber monofilament A satisfying the following (1) to (3) and/or a monofilament B satisfying the following (1) with a processed yarn and using a covered yarn satisfying the following (4) to (5). (1) The fineness is 150dtex or more and 3000dtex or less. (2) The maximum reflection intensity at a light receiving angle of 0-80 DEG is 50 or less. (3) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) is 2.8 or less. (4) The fineness of the processed yarn was 50dtex or more. (5) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) of the covering yarn is 2.8 or less. The above string is preferably used for hats.)

1. A cord produced by covering the periphery of a synthetic fiber monofilament A satisfying the following (1) to (3) and/or a monofilament B satisfying the following (1) with a processed yarn and using a covering yarn satisfying the following (4) to (5),

(1) a fineness of 150dtex or more and 3000dtex or less,

(2) the maximum reflection intensity at a light receiving angle of 0 to 80 DEG is 50 or less,

(3) the ratio of the maximum reflection intensity to the minimum reflection intensity, i.e., the maximum reflection intensity/the minimum reflection intensity, is 2.8 or less,

(4) the fineness of the processed yarn is more than 50dtex,

(5) the ratio of the maximum reflection intensity to the minimum reflection intensity of the covering yarn, i.e., the maximum reflection intensity/the minimum reflection intensity, is 2.8 or less.

2. The cord according to claim 1, wherein the cord is a non-woven fabric,

the synthetic fiber monofilament a satisfies the following (6),

(6) the reflection intensity is 20 or less when the gloss is 0 DEG of the light receiving angle.

3. The cord according to claim 1 or 2,

the synthetic fiber monofilament A is obtained by alkali weight reduction processing of a monofilament containing 0.01 to 10 wt% of titanium oxide and 0.01 to 10 wt% of silicon dioxide.

4. The cord according to any one of claims 1 to 3,

the synthetic fiber monofilament A satisfies the following (7) to (8),

(7) b value of flexural rigidity was 0.002N · cm²More than the ratio of the total weight of the mixture of the oil and the water,

(8) the bending hysteresis 2HB value is 0.003 N.cm/yarn or less.

5. The cord according to any one of claims 1 to 4,

the synthetic fiber monofilament A and/or the monofilament B have a content of 3 to 60 wt%.

6. The cord according to any one of claims 1 to 5,

at least the synthetic filaments A and/or the process filaments are dyed.

7. The cord according to any one of claims 1 to 6,

the synthetic fiber monofilament a and/or the covering yarn are knitted in a state where multifilaments are adjacent.

8. The cord according to any one of claims 1 to 7,

the cord is woven with a braided yarn relative to a core yarn, the core yarn comprising a spun yarn and the braided yarn comprising a synthetic fiber monofilament A and/or the wrap yarn.

9. The cord according to claim 8, wherein the cord is a non-woven fabric,

the spun yarn includes one or more selected from the group consisting of polyester fiber, polyamide fiber, acrylic fiber, cotton and wool.

10. The cord according to claim 8 or 9,

the fineness of the spun yarn is 4-50 counts in terms of cotton count.

11. The cord according to any one of claims 7 to 10,

the multifilament yarn has a difference in dyeing in the length direction.

12. The cord according to any one of claims 1 to 11,

the application is a hat.

13. A cap comprising the cord as claimed in any one of claims 1 to 11.

Technical Field

The present invention relates to a string and a cap.

Background

Conventionally, a cord made of natural fibers such as hemp, peony in bud, straw, and raffia and papermaking fibers has been used for various purposes such as bags, baskets, furniture, and chairs, including hats, and has excellent appearance.

In particular, a cap made of a string has excellent air permeability and is widely used as a cap in summer.

However, natural fibers such as straw have problems in touch and washing fastness, and in recent years, it has been difficult to obtain natural grass materials such as straw for straw caps, and the natural grass materials are often in the form of hemp ropes or multifilament (spun) ropes. The hemp rope is formed by bundling hemp fibers into protofilaments, flattening the protofilaments by a rope making machine and weaving the protofilaments. While the bending hardness of hemp is strong in natural fibers, the shape of the straw hat cannot be sufficiently secured. Therefore, there are problems in stability when sewing the cap shape, shape retention of the cap, and shape recovery after storage.

In addition, natural fibers such as hemp have a problem of being difficult to use in daily life, such as poor washability.

Paper caps and the like using the above-mentioned drawn yarn are also sold in large quantities, but the drawn yarn using the drawn yarn is poor in light weight and the resin coating is less likely to peel off in terms of shape retention after washing.

In order to solve the above problem of shape retention, a string (braid) containing a shape retaining monofilament over the entire length has been proposed. (see, for example, patent document 1)

Further, a monofilament containing a tough chemical fiber in a hemp fiber may be formed into a string (braid).

(see, for example, patent document 2)

Prior art documents

Patent document 1: japanese laid-open patent publication No. 2005-15960

Patent document 2: japanese patent laid-open No. 2000-17553

Disclosure of Invention

Problems to be solved by the invention

As disclosed in patent documents 1 and 2, a cord including monofilaments has higher bending stiffness and is superior in shape retention and shape recovery compared to a cord composed of only natural fibers.

In the cord described in the above patent document, polyester, polypropylene, nylon 6, and the like having high bending rigidity are used for the monofilament, but the monofilament has a strong surface gloss and is dazzled when used for the cord, thereby deteriorating the appearance quality.

Further, there have been described a material obtained by twisting hemp fibers and monofilaments, a material obtained by winding monofilaments around hemp fibers, a method of twisting hemp fibers around monofilaments as a core and the outer periphery thereof, and the like, but this method is insufficient in terms of reduction of the gloss, and when exposed to a strong light source such as shop lighting, local glare (dazzling ) occurs, and there have been problems such as uneven surface quality and lack of natural fiber feeling.

(see, for example, patent document 2)

The wire rope made of the papermaking filaments has high rigidity, but is not resistant to moisture because of water absorption. A material having washing resistance has a problem that the light weight feeling is impaired because a resin agent such as a water repellent is coated on the surface. Further, the bending recovery property is weak, and the shape cannot be recovered once stored, which causes a problem of deterioration in appearance quality.

Thus, all proposals merely improve the rigidity, and do not specifically attempt to improve the "glare" or "gloss".

Accordingly, an object of the present invention is to provide a string and a cap which have excellent rigidity and form stability while suppressing a unique glossy feeling generated when using a monofilament.

Means for solving the problems

To achieve the above object, the present invention has the following technical features.

A cord produced by covering the periphery of a synthetic fiber monofilament A satisfying the following (1) to (3) and/or a monofilament B satisfying the following (1) with a processed yarn and using a covering yarn satisfying the following (4) to (5).

(1) A fineness of 150dtex or more and 3000dtex or less

(2) The maximum reflection intensity of the light receiving angle of 0-80 DEG is 50 or less

(3) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) is 2.8 or less

(4) The fineness of the processed yarn is more than 50dtex

(5) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) of the covering yarn is 2.8 or less

In the cord, the synthetic fiber monofilament a satisfies the following (6).

(6) The reflection intensity is below 20 when the glossiness is 0 DEG

In the cord, the synthetic fiber monofilament a is obtained by alkali weight reduction processing of a monofilament containing 0.01 to 10 wt% of titanium oxide and 0.01 to 10 wt% of silica.

In the cord, the synthetic fiber monofilament a satisfies the following (7) to (8).

(7) The B value of flexural rigidity was 0.002(N · cm)²/yann) or more

(8) A bending hysteresis 2HB value of 0.003(N · cm/yarn) or less

In the cord, the synthetic fiber monofilament a and/or the synthetic fiber monofilament B have a content of 3 to 60 wt%.

In the cord, at least the synthetic filaments a and/or the process filaments are dyed.

In the cord, the synthetic fiber monofilament a and/or the covering yarn are woven in a state in which multifilaments are adjacent to each other.

In the cord, a braided yarn is woven with respect to a core yarn, the core yarn includes a spun yarn, and the braided yarn includes a synthetic fiber monofilament a and/or the covering yarn.

In the cord, the spun yarn includes one or more selected from polyester fiber, polyamide fiber, acrylic fiber, cotton, and wool.

In the cord, the fineness of the spun yarn is 4 to 50 counts in terms of cotton count.

In the cord, the multifilament yarn has a difference in dyeing in the length direction.

The purpose of the string is a hat.

A cap constructed from the string.

ADVANTAGEOUS EFFECTS OF INVENTION

A synthetic fiber cord having improved glare, which is the most serious drawback of synthetic fiber cords, and having excellent rigidity and form stability.

In addition, when 2 or more kinds of fibers such as multifilament and spun yarn are used in combination in a synthetic fiber monofilament, the most significant disadvantage of synthetic fiber cords, that is, "glare" is particularly improved by the combination of characteristics of the fibers, and a cord having excellent form stability and bending recovery properties is obtained. Further, by using the processed yarn exhibiting different dyeing differences, an excellent appearance in the span style can be imparted.

Drawings

Fig. 1 is a photograph showing the surface state of a synthetic fiber monofilament a used in example 1.

Detailed Description

The cord of the present invention is a cord produced by coating the periphery of a specific synthetic fiber monofilament a and/or a specific synthetic fiber monofilament B with a processed yarn and using a specific covering yarn, thereby reducing the surface gloss of the monofilament and obtaining a cord improved from "glare" which has been difficult to improve.

The most important means for constituting the cord of the present invention is to use monofilaments and/or covered yarns which reduce glare.

(synthetic fiber monofilament A)

The glare-reduced monofilament is a synthetic fiber monofilament a satisfying the following (1) to (3).

(1) The fineness is 150dtex or more and 3000dtex or less, preferably 200 to 1000dtex, and more preferably 300 to 700 dtex.

(2) The maximum reflection intensity at a light receiving angle of 0 to 80 DEG is 50 or less, preferably 40 or less, and more preferably 35 or less.

(3) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) is 2.8 or less, preferably 2.5 or less, and particularly preferably as small as possible from the viewpoint of reducing glare of the string.

This improves the "glare" defect, which is the greatest defect of synthetic fiber cords, and provides cords having excellent rigidity and form stability.

The synthetic fiber monofilament a preferably has a maximum reflection intensity of 0 to 80 ° in the light receiving angle in the above range from the viewpoint of glare of the cord.

The reflection intensity is preferably 20 or less, more preferably 18 or less, when the gloss is 0 ° in the light receiving angle.

Thus, even when monofilament ropes are used, there is no glare even when irradiated with sunlight or LED illumination, and the ropes are excellent in surface quality.

In particular, a material having too high glossiness is highly dazzled, and the glossiness of the monofilament is remarkable at the time of rope production, and the appearance quality of the produced rope tends to be lowered. Such a glossy feeling is not preferable for the rope making of synthetic fibers. Therefore, it is preferable to maintain the above-mentioned range of characteristics.

The synthetic fiber monofilament A used in the present invention preferably has a B value of flexural rigidity of 0.002(N · cm)²,/yann) above. This provides the cap with excellent shape retention. B value less than 0.002(N cm)²/yann), the rigidity of the rope becomes low, and the elastic feeling is insufficient when the rope is formed into a shape such as a hat, and the form stability is poor. In addition, if the B value of the flexural rigidity exceeds 0.01(N · cm)²/yarn), the fineness of the monofilament becomes large, and the appearance quality of the finished rope tends to be remarkably lowered. More preferably, the B value of the flexural rigidity is 0.004 to 0.006(N · cm)²/yarn).

The synthetic fiber filament A used in the present invention preferably has a bending hysteresis 2HB value of 0.003 (N.cm/yarn) or less. The lower limit is preferably a limit that retains the characteristic in the range of 0.0005(N · cm/yarn) or more, more preferably 0.001(N · cm/yarn) or more. In particular, when the bending hysteresis 2HB value is 0.001 to 0.003 (N.cm/yarn), the rigidity of the rope is excellent, and when the rope is formed into a shape such as a cap, the rope is preferable in that the rope is excellent in elastic feeling and excellent in form stability.

In the present invention, the synthetic fiber monofilament a is not particularly limited as long as the above range is satisfied, and a monofilament of a polyester fiber is preferable.

In general, polyester fibers are effectively used, false twisting or partial fusion of internal drawing (In-draw) can be easily performed, and a disperse dye is used for dyeing to enable multicolor development, which is advantageous In terms of excellent productivity. Further, a cheese dyeing machine is used as the yarn processing machine, and various suction processing such as antibacterial processing, UV cutting processing, and waterproof processing can be performed, and it is also preferable in that it contributes to development of products. Further, the synthetic fiber monofilament a used for the rope production is a polyester fiber, and is very advantageous for the development of commercial products, in terms of excellent washing durability such as excellent shape retention even after washing, or excellent drying property such as quick drying after washing, from the viewpoint of stiffness of the monofilament and heat-setting property of polyester, while reducing the cost.

The synthetic fiber monofilament a has fine irregularities on the surface, thereby suppressing glare and reducing the glossy feeling.

In order to impart a fine uneven surface to the surface of the synthetic fiber monofilament a, for example, a method of adding particles capable of forming a desired uneven surface, spinning the monofilament, and then performing a weight reduction treatment to melt the surface layer of the monofilament and to drop the particles is exemplified. In this case, the particles and the matting agent are used in combination, whereby glare can be further suppressed and the glossy feeling can be reduced.

Examples of the particles and matting agents include silica, titanium oxide, silica, alumina sol, calcium carbonate, organic sulfonic acid metal chloride, sulfate, sodium benzenesulfonate, magnesium dicarboxylates, potassium monohydrogen phosphate, crosslinked polystyrene, and the like. In particular, silica (among them, colloidal silica) is preferably used as the particles, and titanium oxide is preferably used as the matting agent. Further, a particulate matting agent such as titanium oxide can be used not only as a matting agent but also as a matting agent to be removed to form an uneven surface. Therefore, since it is difficult to discuss the above-mentioned matting agent and particles separately, these matting agents and particles are not clearly distinguished in the present invention. When 2 or more kinds of the above particles and matting agents are used, one having a higher effect of imparting matting property to the fibers is regarded as a matting agent, and the other is regarded as particles. The manufacturing can be carried out in the following way: after a spun monofilament containing particles and/or a matting agent is produced, a weight reduction process is performed to remove the particles and/or the matting agent exposed on the surface and form irregularities.

The monofilament having fine irregularities as described above diffusely reflects light by the irregularities when irradiated with light, thereby suppressing a glossy feeling and reducing "glare" of the string.

The synthetic fiber monofilament a preferably contains a matting agent such as titanium oxide in an amount of 0.01 to 10 wt% based on the synthetic fiber monofilament, because the synthetic fiber monofilament can reduce the brightness of color and reproduce dark color. More preferably 0.01 to 8.0 wt%.

In addition, from the viewpoint of performing weight reduction processing to form fine unevenness on the surface of the synthetic fiber monofilament a, the content of particles such as silica is preferably 0.01 to 10% by weight with respect to the synthetic fiber monofilament a. More preferably 0.01 to 8.0 wt%.

From the viewpoint of achieving both glare reduction and high-order processability, it is preferable to produce a synthetic fiber monofilament a containing 0.01 to 10 wt% of titanium oxide and 0.01 to 10.0 wt% of silica with respect to 100 wt% of the synthetic fiber monofilament a.

In order to obtain a glare-reduced monofilament, it is extremely effective to carry out the production by adding 0.01 to 10 wt% of the above-mentioned matting agent such as titanium oxide and particles such as silica during spinning and carrying out the reduction processing and dyeing using a dyeing machine such as a cheese dyeing machine.

The average particle diameter of the particles such as silica is preferably 0.5 to 8 μm. For example, when dry silica particles are used, they are determined by the number average of the primary particle diameters obtained by an electron microscope. The particle size of the colloidal silica is a value obtained by analyzing, by Mie dispersion theory, scattered light generated when the particles present in a well-stirred ethylene glycol slurry containing 20 mass% of silica particles by irradiation with light, using a HORIBA granulation size analyzer (LA-700). The measurement of the other particles may be performed by selecting a more suitable method from among the above-mentioned methods, and when it is difficult to perform the measurement by any method, it is assumed that the measurement is performed by a method for calculating the average particle size of the primary particles, which is generally used in the art.

Particularly preferably, among the above, a method is used in which polyethylene terephthalate (PET) is used as a material constituting the synthetic fiber monofilament a, a polyethylene terephthalate monofilament containing particles and a matting agent is produced as described above, and reduction processing and dyeing are performed using a cheese dyeing machine, thereby obtaining a synthetic fiber monofilament a with reduced glare.

The monofilament is reduced by a method corresponding to the material constituting the monofilament, and for example, in the case of polyethylene terephthalate monofilament, a method of dissolving out the surface of the monofilament with an alkaline solution and performing reduction processing is exemplified. The alkaline solution used for the weight reduction processing is preferably an aqueous solution of sodium hydroxide, potassium hydroxide, or the like. As a method of reducing the amount of the yarn in the state of the yarn, a method of performing a reduction process using an alkaline solution by using a general yarn dyeing apparatus can be used. Specifically, a cheese dyeing machine that treats a cheese in the shape of a cheese, a hank dyeing machine that treats a hank in the shape of a hank, an armhole dyeing machine, or a star dyeing machine can be used. In particular, a cheese dyeing machine is preferably used from the viewpoint of the uniformity of weight reduction and the unwinding property of the yarn.

In addition, the weight reduction treatment method is sufficient under the conditions of general weight reduction processing, and in the case of monofilaments, since the surface area is very small with respect to the weight and the weight reduction rate is slow, it is preferable to use a weight reduction accelerator. The weight ratio is 3% or more and 98% or less than that before the usual weight reduction processing. The reduction processing causes particles contained in the monofilament to fall off, a plurality of pits are formed, and light is diffusely reflected, thereby reducing the gloss, but if the amount is excessively reduced, the elongation may be reduced, and yarn breakage may occur during the production of the cord. The reduction rate that minimizes the reduction in tensile strength and elongation while reducing the glossy feel is preferably 3 to 30% by weight, more preferably 5 to 30% by weight, and particularly preferably 10 to 30% by weight.

The monofilament a satisfying the above (1) to (3) can be produced by the above method.

(covered yarn obtained by covering the periphery of monofilament B with a working yarn)

The cord of the present invention can also provide a cord with improved "glare" by using a specific covering yarn obtained by covering the periphery of the monofilament B with a processed yarn.

The covered yarn is formed by covering the periphery of the monofilament B satisfying the above (1) with a processed yarn, and satisfies the following (4) to (5).

(4) The fineness of the processed yarn was 50dtex or more.

(5) The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) of the covering yarn is 2.8 or less.

The monofilament B is preferably a synthetic fiber monofilament, more preferably a monofilament such as a polyester fiber, a polyolefin fiber such as a polypropylene fiber or a polyethylene fiber, or a polyamide fiber, in order to achieve flexural rigidity and form stability. The fineness is 150dtex or more and 3000dtex or less, preferably 200 to 1000dtex, and more preferably 300 to 700 dtex.

The monofilament B used in the present invention preferably has a bending rigidity B value of 0.002(N · cm)²,/yann) above. This provides the cap with excellent shape retention. The B value is less than 0.002(N cm)²/yann), the rigidity of the rope becomes low, and the elastic feeling is insufficient when the rope is formed into a shape such as a hat, and the form stability is poor. In addition, if the B value of the flexural rigidity exceeds 0.01(N · cm)²/yarn), the fineness of the monofilament becomes large, and the appearance quality of the finished rope tends to be remarkably lowered. More preferably, the B value of the flexural rigidity is 0.004 to 0.006(N · cm)²/yarn).

The synthetic fiber filament B used in the present invention preferably has a bending hysteresis 2HB value of 0.003(N · cm/yarn) or less. The lower limit is preferably a limit that retains the characteristic in the range of 0.0005(N · cm/yarn) or more, more preferably 0.001(N · cm/yarn) or more. In particular, when the bending hysteresis 2HB value is 0.001 to 0.003 (N.cm/yarn), the rigidity of the rope is excellent, and when the rope is formed into a shape such as a cap, the elastic feeling is excellent and the form stability is excellent, and these are preferable.

The processed yarn is not a drawn yarn in which the form of the fiber is straight, but is limited to the processed yarn. When the drawn yarn is used, since the fiber form is straight, the glare is strong when the cord is manufactured, and the surface quality of the manufactured cord is deteriorated. In the case of using the processed yarn, the fiber form is partially different, and thus glare can be reduced.

Further, as the form of the processed yarn, a multifilament is generally used.

The processed yarn is preferably a yarn obtained by false twisting in order to sufficiently coat the monofilament B and reduce the glossy feeling.

The material of the processing yarn includes polyester, polypropylene, nylon, and the like, and polyester or nylon which is easily dyed is preferable because of excellent development of multiple colors and color development.

In the case of polypropylene, it is difficult to dye by a usual method, and there is a problem of poor versatility, and in the case of nylon, there are restrictions in light resistance and bending rigidity. The polyester is preferable in that it has excellent dyeability and appropriate bending rigidity.

The processed yarn has a fineness of 50dtex or more, preferably 50 to 2000dtex, from the viewpoint of imparting a span style texture to the yarn and rigidity. From the viewpoint of further reducing glare and productivity of coating, it is particularly preferably 100dtex to 1000dtex, and more preferably 100dtex to 600 dtex. Further, the coating rate of the monofilament B is improved, and the high-order workability is also excellent while the lightweight feeling is maintained. Further, by coating the monofilament B with a fine fineness processed yarn, light can be diffusely reflected, and "glare" can be suppressed.

The method of coating the processed filament B with the monofilament B is not limited as long as the conditions specified in the present invention are satisfied, and double coating (single coating) or single coating (double coating) is preferable, among which double coating is preferable, because glare can be reduced.

The number of wraps of the covered yarn is preferably 300 to 3000T/m. Further, the number of turns of the processed yarn is preferably 300T/m to 2000T/m in order to increase the coverage of the monofilament B, to maintain a light weight feeling, and to achieve high-order processability.

The use of the multifilament of the processed yarn can reduce glare of the cord and improve quality.

The ratio of the maximum reflection intensity to the minimum reflection intensity (maximum reflection intensity/minimum reflection intensity) of the covering yarn is 2.8 or less. Further, from the viewpoint of reducing glare of the cord, it is preferably 2.5 or less.

Such a covered yarn can be obtained by a method of covering a monofilament with a processed yarn such as a false-twisted yarn using a covering machine.

Since the glare can be reduced by coating the monofilament B with the coated yarn, the reflection intensity can be set to a preferred range of 20 or less, and in a more preferred embodiment, a more preferred range of 18 or less, when the gloss is 0 °.

Further, since the glare is reduced, the maximum reflection intensity of the covered yarn at a light receiving angle of 0 to 80 ° can be set to a preferable range of 50 or less, and in a more preferable embodiment, a more preferable range of 40 or less, and a particularly preferable range of 35 or less.

By using the synthetic fiber monofilament a and/or the covered yarn described above, glare can be reduced when the yarn is formed. Hereinafter, such synthetic fiber monofilament a and covering yarn may be referred to as special monofilament.

(thread rope)

The cord of the present invention can be obtained by making a cord using the above-mentioned special monofilament.

The structure of the string in the rope production is not particularly limited, and generally, the string is a flat woven structure, but is not particularly limited as long as the string is a band shape that can be formed into a hat by sewing into a spiral shape.

When flattening is performed, the steel sheet can be manufactured using a general rope-making machine for flattening.

The rope may be formed by weaving 1 or more fibers including the special monofilament into a string, and among them, it is preferable to form a braided rope by weaving braided yarns (for example, 6 to 16 yarns) with respect to core yarns (for example, 4 yarns) serving as cores.

In the present invention, the special monofilament is preferably used for knitting yarns in that the effect of suppressing glare can be sufficiently exhibited.

In this case, the special monofilament is preferably used in combination with the multifilament. The combination may be any of a mode in which the special monofilament and the multifilament are used as the knitting yarn in advance and a mode in which the special monofilament and the multifilament are used as different knitting yarns, respectively, but a mode in which the special monofilament and the multifilament are knitted in an adjacent state is preferable, and a mode in which the special monofilament and the multifilament are used as the knitting yarn in advance is preferable from the viewpoints of productivity of the cord and the unwinding property of the yarn. In particular, from the viewpoint of productivity of the cord, it is preferable to use the synthetic fiber monofilament a and the multifilament as a knitting yarn by previously doubling them.

The multifilament is preferably a polyester multifilament or a polyamide multifilament of a processed yarn, and particularly preferably a polyester multifilament in view of flexural rigidity and light resistance.

The multifilament of the processed yarn is not a drawn yarn in which the form of fiber is straight, and the processed yarn is preferably used. When the drawn yarn is used, the form of the fiber is straight, so that the glare is strong in the production of the cord, and the surface quality of the cord tends to be lowered. In the case of using the processed yarn, the fiber form is partially different, and thus glare can be reduced. The processed yarn is preferably a false-twisted yarn, a partially-melted yarn, a taslon yarn, a mixed-color yarn, or the like, and among them, a yarn capable of imparting a texture like natural fibers to a cord by having a difference in color of dyeing (hereinafter, sometimes referred to as "difference in color") in the longitudinal direction of the yarn is preferable. As such a yarn having a difference in color in the longitudinal direction, a partially melted yarn is preferable. By dyeing them, glare can be further reduced or natural texture due to difference in shade of dyeing can be imparted in the case of producing a string.

Among them, a method of spinning a multifilament yarn, then performing partial melting processing to partially melt the multifilament yarn, and dyeing the yarn using a cheese dyeing machine is preferable. This can produce a refreshing feeling and a difference in shade of dyeing, and as a result, a difference in fineness or a difference in color as in natural fibers can be obtained.

Such a multifilament having a difference in color can be produced by controlling the stretching conditions, specifically, forming a weakly stretched part having a relatively small stretching ratio and a strongly stretched part having a relatively high stretching ratio during stretching. Since the weak stretching portion has a lower melting point than the strong stretching portion, the weak stretching portion is melted by heating in the heat setting step after stretching, and a partially melted yarn is formed. By making such a partially melted yarn, a color difference can be exhibited. Since the natural fiber has a partial difference in dyeing, a difference in shade of color is produced, and it is preferable in that the natural fiber such as straw or hemp can be obtained in appearance. The term "poor dyeing" as used herein means a difference in dye attachment, that is, a difference in the ease of attachment of the dye to the fiber. This effect is particularly remarkable when polyester multifilament yarn such as polyethylene terephthalate is used.

By spinning a polyester filament, partially melting the yarn, and further performing false twisting, a difference in fineness and a difference in color difference as in natural fibers can be obtained by giving a refreshing feeling or a difference in shade of dyeing. Specifically, the yarn is obtained by partially performing melt processing and dyeing using a cheese dyeing machine. The technique of partial melting may be performed without particularly selecting the type, process, conditions, and the like of the apparatus used for production, and the number of the melting portions is preferably 5 or more per m. When the number of the dye particles is less than 5, the difference in dyeing is small, and the change in hardness is small, so that the texture is monotonous. On the other hand, if the melted portion is increased, the hardness of the melted portion becomes remarkable, the texture and the touch of the skin become poor, and the rough feeling becomes strong.

In the present invention, particularly preferred is a processed yarn obtained by processing a partially melted yarn using a highly oriented undrawn yarn of a usual polyester multifilament yarn and dyeing and antibacterial processing or UV cutting processing with a cheese dyeing machine.

In the cord of the present invention, it is preferable to use a spun yarn in combination in order to prevent slipping of the yarn constituting the cord during cord making, particularly, to prevent slipping of the braided yarn with respect to the core yarn in braiding.

The spun yarn is preferably made of a dyeable fiber such as a polyester fiber, a polyamide fiber, an acrylic fiber, cotton, or wool. These may be used in 1 or 2 or more. When undyed yarn such as polypropylene fiber is used, the versatility is poor and the color development is difficult. Although it can be used by coloring with a dope and blending with other fibers, it is difficult to finely adjust the color and the mass of the fiber is large, and therefore it is not suitable for rope making with a small amount of raw yarn. Among them, polyester fibers or polyamide fibers are preferably used.

Therefore, polyester spun yarn and polyamide spun yarn are preferable as the spun yarn, and among them, polyester spun yarn is particularly preferable because it has high bending rigidity and can increase the width of the cord and increase the rigidity of the cord. In addition, a spun yarn containing a molten polyester or a molten nylon raw cotton may be used, and the rigidity of the cord may be further improved by melting.

The spun yarn is used as a constituent yarn of a cord, but is preferably used for a braided yarn and a core yarn. Particularly preferably used as the core yarn. It is of course also possible to use the spun yarn as a braided yarn, if desired.

The fineness of the spun yarn is 50 counts or less, preferably 4 to 50 counts, in terms of cotton count, for the purpose of shape stability of sewn or cap. Particularly, when the yarn is used for a core yarn, the number of yarns is preferably 20 or less, and particularly preferably 4 or more and 20 or less.

Further, if the B value of the flexural rigidity is too small, the difference in the width of the string is likely to occur, and the stability when sewing the hat is also impaired, so the B value of the flexural rigidity of the string is preferably 0.002(N · cm)²,/yann) above.

In addition, in consideration of storage property and requirement of appropriate flexibility in home washing, the B value of the bending rigidity of the braided rope is preferably 0.025(N · cm)²/yarn) or less, preferably 0.019 (N.cm)²,/yann) below.

Since rapid shape recovery is required after storage in a bag or the like, the bending delay 2HB value of the braid is preferably 0.01(N · cm/yarn) or less. The lower limit is preferably 0.0005(N · cm/yarn) or more, more preferably 0.001(N · cm/yarn) or more, and further preferably 0.003(N · cm/yarn) or more.

The spun yarn is subjected to a general spinning process, and can be dyed with a dye suitable for a spinning material such as a disperse dye using a cheese dyeing machine. A spun yarn further subjected to various processes such as antibacterial processing, UV cutting processing, and water repellent processing can be preferably used.

The following describes a method for producing the spun yarn.

Spinning is preferably carried out using a common ring spinning machine, and twist-stop setting is carried out.

When spun yarn is formed into a cord, high flexural rigidity and tensile strength are required, and the yarn preferably has a light weight feeling.

In order to improve the bending rigidity and bending recovery of the spun yarn, a two-ply yarn or a three-ply yarn is preferable. Further, a hollow polyester is preferable because a light weight feeling and a dyeing property are also important when the polyester is formed into a cord.

The cord of the present invention can be manufactured using a conventional cord making machine. Among them, the 7-piece or 9-piece group of cords produced by a general flat cord making machine is preferable.

In the present invention, it is preferable to insert 2 or more core yarns because the width of the braided rope varies depending on the bending rigidity of the braided rope. In addition, when the application is a straw hat, the ease of sewing affects the surface quality of the straw hat, and therefore, it is preferable to appropriately select the width of the string and the number of knitting yarns.

Preferably, the rope width is 5mm or more, and the number of braided wires is 5 to 16.

As described above, the cord made of synthetic fibers proposed so far has a problem in terms of gloss because monofilaments having strong bending rigidity are used, and has a problem in terms of quality as a cap because the bending rigidity of the cord is insufficient when monofilaments are not used.

In the present invention, the synthetic fiber filament a and/or the filament B in the cord preferably have a content of 3 to 60% by weight.

As an effect required by the present invention, by forming fine unevenness on the surface of the synthetic fiber monofilament a by weight reduction processing or by covering the monofilament B with a processed yarn having a raised feeling, surface gloss of the monofilament can be suppressed, glare peculiar to the synthetic fiber can be reduced, and appearance quality of the cord can be improved. By using a special monofilament which is thick and has no glossy feeling, the rigidity of the cord can be maintained, and an elastic feeling can be obtained.

In addition to the above, when polyester multifilaments are used as the processed yarn together with monofilaments and partially melted, the fiber surface of the processed yarn is partially melted, and as a result, a difference in shade of color is generated due to a difference in dyeing between an unmelted portion and a melted portion, and therefore, in the case of rope production, the touch and color tone of the processed yarn can be made uneven, and a step-over style texture can be obtained, which is preferable.

The cord of the present invention thus obtained is a cord that, despite the use of monofilaments, can reduce the gloss of normal monofilaments, has the texture and appearance quality of a processed yarn, has elasticity, is excellent in household washing, storage properties and light weight, eliminates "glare" which has been a major drawback in the past, establishes surface quality free of "glare" and "glistening", and provides a processed yarn having no gloss of synthetic fibers.

In the production of the synthetic fiber monofilaments a, the synthetic fiber monofilaments B and the processed yarns, it is preferable that the spinning spinneret in the spinning step is formed into a deformed cross section to change the cross-sectional form (various types such as a cloud type, a hollow type and an eight-lobe type), or particles (preferably, silica such as titanium oxide and colloidal silica) capable of forming fine irregularities by reduction processing of the yarn are contained, because the gloss of the yarn can be further reduced, and the present invention is more effective.

The string of the present invention is very suitable for hats because of the above-mentioned characteristics, but is not limited thereto, and may be applied to bags, baskets, furniture, and seats.

In particular, since the cap using the string has elasticity such as straw and hemp and also has washing durability, it is more practical than a cap made of natural fiber such as a straw hat.

Examples

The present invention will be described in detail below with reference to examples, but the present invention is not necessarily limited thereto.

(evaluation method)

The monofilaments produced according to the present invention were analyzed using the following method.

Gloss, reflection strength:

the gloss and the reflection intensity were measured by using a three-dimensional goniophotometer GP-200 (manufactured by color technology research institute in village).

When the incident angle is 60 degrees and the full-scale range of the standard white board is 200 degrees, the light receiving angle is changed by using the gloss meter, and the reflection intensity at the light receiving angle of 0 degree, the maximum reflection intensity between the light receiving angles of 0-80 degrees, the minimum reflection intensity between the light receiving angles of 0-80 degrees and the ratio of the maximum reflection intensity to the minimum reflection intensity are obtained. The smaller the value of the reflection intensity, the more free from glare, and evaluated as good.

Flexural rigidity, flexural hysteresis:

the flexural rigidity in the present invention was measured using a KES-FB2 pure bending tester (manufactured by Kyoho technologies Co., Ltd.) as an evaluation apparatus. 4 monofilaments were arranged at equal intervals of 1cm and measured. The bending rigidity B value and the bending hysteresis 2HB value at the time of bending were measured.

The larger the B value, the higher the rigidity and the more flexible. Further, the bending hysteresis 2HB of the monofilament when bent was measured. The smaller the value, the less strain and the higher the tenacity and the resilience of the monofilament.

Fineness of fiber

Fineness of monofilament according to L1013: 20108.3.1A method.

The fineness of the processing lines was determined from L1013: 20108.3.1B method.

Wire diameter

b the diameter of the monofilament was measured by using an optical microscope BH2 manufactured by Olympus corporation. The diameter was determined by observing the side surface of the monofilament with a microscope, and the diameter was measured 10 times at every 1 level and the arithmetic mean value was used for the measurement.

The cords produced according to the present invention were analyzed using the following method.

Flexural rigidity:

the flexural rigidity in the present invention was measured using a KES-FB2 pure bending tester (manufactured by Kyoho technologies Co., Ltd.) as an evaluation apparatus. 1 string was fixed and measured. The bending rigidity B value and the bending hysteresis 2HB value at the time of bending were measured.

The larger the B value, the higher the rigidity and the more flexible. Further, the bending hysteresis 2HB value when the cord was bent was measured. The smaller the value, the less strain, and the more elastic cord having toughness.

Evaluation of content of special monofilament in cord:

the produced cord was cut into 1m, and decomposed into a monofilament, a processed yarn, and a staple yarn, and the mass was measured. The measurement was performed 5 times, and the average value was determined to 3 significant digits as the content.

Evaluation of caps:

the cap was analyzed by the following method.

The degree of reduction in the elastic feeling and the glossy feeling of the cap was evaluated by 5-person sensory evaluation. Evaluation was performed at 5 levels based on the following criteria. The most frequent evaluation was performed, and when the same number of evaluations were performed, the lower evaluation result was used.

Elastic feeling of hat:

5 when grasped by hand, feel tough and do not collapse.

4 when grasped by hand, feel tough and are hardly crushed.

3 when grasped by hand, feel tough and are slightly squashed.

2, when grasped by hand, feel loose, fatigued, and are somewhat simply crushed.

1 when grasped by hand, feel loose and limp, and are simply crushed.

Degree of reduction in cap gloss:

5 do not emit light under natural light.

4 slightly glowing under natural light.

3 partially glow under natural light.

2 emit light under natural light.

1 emits light strongly under natural light.

Example 1

Polyester (PET) monofilaments (cross-sectional shape perpendicular to the longitudinal direction: circular cross-section) having a pre-weight-reduction linear diameter of 200 μm and containing 0.3 wt% of titanium oxide and 1.5 wt% of dry silica were used.

Using a cheese dyeing machine, a polyester monofilament cheese was immersed in a sodium hydroxide 30% o.w.f atmosphere at 120 ℃ for 30 minutes, subjected to weight reduction processing, and reduced by 15% in weight percentage to the weight percentage before processing, to form fine irregularities on the surface (the fineness of the synthetic fiber monofilament a after 15% reduction was about 386 dtex). The reflection strength, bending rigidity and bending hysteresis of the monofilament were measured. The measurement results are shown in Table 1. Fig. 1 shows the surface state of the monofilament observed with a Scanning Electron Microscope (SEM). Fig. 1 is a photograph showing the surface state of a synthetic fiber monofilament a used in example 1. Fine irregularities are formed on the surface of the polyester monofilament as the synthetic fiber monofilament a 1.

The processed yarns (total fineness of 700T) of the monofilament and the polyester multifilament produced by the above method were doubled to obtain flat 9-group knitting yarns. As the polyester processing yarn, partially melted yarn was used. The 4 core yarns were prepared as a flat string having a width of 8mm by using polyester staple 10/2S.

Sewing the thread rope into a spiral shape by a flat sewing machine, and performing heat setting at 180 ℃ by a mould to prepare the hat. In the obtained cap, the polyester multifilament yarn was partially melted at a frequency of 50 pieces/m.

Example 2

Polyester (PET) monofilament having a wire diameter of 200 μm and containing only 0.5% by weight of titanium oxide was used as a core, and 166dtex Polyester (PET) false-twisted yarn was used to double-coat the core at 800T/m. Except for this, a flat string or cap having a width of 8mm was obtained by the same production method as in example 1.

Example 3

A flat string or cap having a width of 8mm was obtained in the same manner as in example 1, except that a Polyester (PET) monofilament having a yarn diameter of 300 μm and containing 0.3% by weight of titanium oxide and 1.5% by weight of dry silica was used.

Example 4

A Polyester (PET) monofilament having a diameter of 150 μm and containing only 0.5% by weight of titanium oxide was used as a core, and a 166dtex Polyester (PET) false-twisted yarn was used to double-coat the core at 800T/m. Except for this, a flat string or cap having a width of 8mm was obtained by the same production method as in example 1.

Comparative example 1

A flat cord and cap having a width of 8mm were obtained by the same production method as in example 1, except that a Polyester (PET) monofilament having a cord diameter of 200 μm and containing only 0.5% by weight of titanium oxide was used and weight reduction processing was not performed.

Comparative example 2

A flat cord and cap having a width of 8mm were obtained by the same production method as in example 1, except that a Polyester (PET) monofilament having a cord diameter of 200 μm and containing only 3% by weight of titanium oxide was used and weight reduction processing was not performed.

Comparative example 3

A flat string or cap having a width of 8mm was obtained by the same production method as in example 1, except that a Polyester (PET) monofilament having a wire diameter of 100 μm, which contained 0.3 wt% of titanium oxide and 1.5 wt% of dry silica, was used.

Comparative example 4

A flat string or cap having a width of 8mm was obtained in the same manner as in example 1, except that Polyester (PET) monofilament having a wire diameter of 680 μm and containing only 3% by weight of titanium oxide was used.

Comparative example 5

Polyester (PET) monofilament having a wire diameter of 200 μm and containing only 0.3 wt% of titanium oxide was used, and double-coated with 33dtex Polyester (PET) false twist yarn at 800T/m. Except for this, a flat string or cap having a width of 8mm was obtained by the same production method as in example 1.

Table 1 shows a comparison of the monofilaments, the covered yarns obtained by the above-described process.

As shown in table 1, in example 1 using the polyester monofilament with less glare of the present invention and comparative examples 1 and 2 using the polyester monofilament obtained by the conventional method, a large difference was observed in the maximum reflection intensity, the minimum reflection intensity, and the reflection intensity at 0 °. As described above, the lower the reflection intensity, the weaker the gloss feeling, and the smaller the difference between the maximum gloss and the minimum gloss, the more difficult the glare is generated.

Therefore, example 1 can be said to be a monofilament having bending rigidity and bending hysteresis equivalent to those of comparative examples 1 and 2, and having a low glossiness and being less likely to cause glare.

In example 1, the gloss was the same as that in comparative example 3, but the flexural rigidity was high, and the cord obtained therefrom was excellent in shape retention and storage properties.

Examples 1 and 3 showed less glare and superior appearance quality compared to comparative example 4. Further, since the cord has appropriate bending rigidity, the cord obtained therefrom can be said to be a cord having superior storage properties as compared with comparative example 4.

In addition, example 2 had the same flexural rigidity as comparative example 5, and the false-twisted yarn had a high coverage of the monofilament, so that a cord having a lower luster feeling and an excellent appearance quality as compared with comparative example 5 was obtained. Further, since the fineness of the false-twisted yarn was 166tex, the productivity of double coating was higher than that of comparative example 5.

As shown in table 2, examples 1 to 4 of the low glare cord of the present invention and comparative examples 1 to 5 of the cord obtained by the conventional method were compared. The examples have the same flexural rigidity and flexural hysteresis as those of comparative examples 1 and 2, but the degree of reduction in gloss is extremely excellent.

The cord of example 1 has higher bending rigidity and bending hysteresis values than the cord of comparative example 3, and is said to be a cord having excellent shape retention and storage properties.

Description of the reference numerals

1 synthetic fiber monofilament.