JP2016069772A - Synthetic fiber multifilament - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic fiber that has an excellent antifungal property and antifungal durability even without relying on the post-treatment.SOLUTION: Provided ia a synthetic fiber multifilament which is a multifilament made from an inorganic type antifungal agent supporting a metal composition on a glass, and a thermoplastic resin, and in which: the total fineness is 200 dtex or less and the single yarn fineness is less than 6 dtex; the inorganic type antifungal agent is a microparticle having an average particle size of 0.6 to 3.5 μm and having at least any one of zinc or silver supported on a glass; and the inorganic type antifungal agent is contained in the fiber by 0.5 to 5.0 mass%. It is preferred that: the inorganic type antifungal agent has at least any one of zinc and silver supported on a glass; the content of zinc with respect to the agent is 15 to 25 mass%; and the content of silver is 0.1 to 3 mass%.SELECTED DRAWING: None

Description

  The present invention relates to a synthetic fiber multifilament having antifungal properties.

Conventionally, many fabrics having fungicidal properties have been proposed. For example, a method of imparting antifungal properties by processing by spraying, dipping, coating, etc., a method of imparting antifungal properties by means such as a woven structure, a kneading agent, a processing using a fluorine-based coating agent For example, a method for preventing mold from being fixed by covering with a fabric.
For example, Patent Document 1 describes a functional fabric for industrial materials to which a fungicide is applied.
Patent Document 2 discloses that in the step of melt spinning a spinning raw material obtained by mixing a masterbatch containing an inorganic antibacterial agent and a first polyester resin and a second polyester resin, the first polyester It describes a method for producing polyester fibers having antifungal properties by limiting the intrinsic viscosity of the resin and the second polyester resin to a specific range.

JP 2009-293147 A JP 2011-222024 A

However, as in Patent Document 1, a fabric to which an antifungal agent is applied later is easily peeled off after long-term use or washing, absorbs water from the peeled portion, generates mold, and has poor fiber performance. Therefore, there is a problem in mold resistance durability.
Further, the fiber described in Patent Document 2 is kneaded into the fiber, and does not cause a problem like that applied by post-processing, but as a mold-proofing property, a sufficient one has not yet been obtained. Currently.

  Accordingly, an object of the present invention is to solve the above-mentioned problems and to obtain a synthetic fiber having a better antifungal property without using post-processing.

In order to achieve the above object, the present invention is a multifilament composed of an inorganic fungicide having a metal component supported on glass and a thermoplastic resin, and has a total fineness of 200 dtex or less and a single yarn fineness of less than 6 dtex. The inorganic antifungal agent is a fine particle having an average particle diameter of 0.6 to 3.5 μm in which at least one of zinc and silver is supported on glass, and the inorganic antifungal agent is added to the fiber in an amount of 0.00. A synthetic fiber multifilament containing 5 to 5% by mass is defined as a first gist.
In the multifilament, the inorganic antifungal agent has at least one of zinc and silver supported on the glass, the zinc content relative to the agent is 15 to 25 mass%, and the silver content is 0.1 to 3 mass. % Is the second gist.
In the multifilament, the third gist is that the strength is 3 cN / dtex or more and the number of fluffs per million meters is 2 or less.
In addition, a step of mixing the inorganic antifungal agent master batch and the diluted resin, a step of melt spinning the mixture at a spinning draft of 10 to 150, and a fiber obtained by melt spinning the draw ratio of 2.0 to 4 A method for producing the above multifilament produced by a direct spinning drawing method including a step of drawing by 5 times is a fourth gist.

According to the multifilament of the present invention, an excellent antifungal property can be obtained without applying the antifungal agent by post-processing, and the antifungal durability is also excellent.
According to the 2nd summary of this invention, it becomes what was especially excellent in antifungal property and antifungal durability.
According to the 3rd summary of this invention, since it is excellent in fiber quality in addition to said effect, it is excellent also in the post process passage property.
According to the 4th summary of this invention, the multifilament of this invention can be manufactured suitably.

  Hereinafter, the present invention will be described in detail.

First, the synthetic fiber multifilament of the present invention is composed of an inorganic fungicide having a metal component supported on glass and a thermoplastic resin.
As a thermoplastic resin, it is not limited only to a polyester resin, The thermoplastic resin which can form a fiber can be selected. For example, examples of the polyester include polyethylene terephthalate (PET), polybutylene terephthalate (PBT), aromatic polyester mainly composed of polyalkylene terephthalate, and aliphatic polyester polylactic acid such as polylactic acid.
Furthermore, thermoplastic resins such as polyamide, polyurethane and polyolefin can also be used.

  The synthetic fiber multifilament of the present invention is generally used as long as the effects of the present invention are not impaired. Additives, lubricants, matting agents, antioxidants, fluorescent whitening agents, antistatic agents, and light resistance agents. Etc. may be included.

  In the present invention, the inorganic antifungal agent is a fine particle using glass as a base material and supporting at least one of zinc and silver. Particularly preferably, both zinc and silver are supported. The zinc content relative to the fungicide is preferably in the range of 15 to 25% by mass, and the silver content is preferably in the range of 0.1 to 3% by mass, more preferably 0.1 to 1% by mass. . Within such a range, it becomes easy to sufficiently maintain the whiteness of the fiber, the yarn quality, and the antifungal property.

In the present invention, the inorganic antifungal agent is fine particles having an average particle size of 0.6 to 3.5 μm.
If the average particle diameter is too large, the number of fine particles present in the fiber is reduced when the concentration is the same, the probability of being present in the fiber surface layer is lowered, and the antifungal property is lowered.
Moreover, when the particle | grains of an antifungal agent are too small, particle | grains aggregate, a patch arises in antifungal property in a fiber, and antifungal property may fall. Therefore, the above range is preferable from the viewpoint of good antifungal properties and antifungal stability.

  The synthetic fiber multifilament of the present invention can be obtained by combining the thermoplastic resin and an inorganic fungicide.

  In the synthetic fiber multifilament of the present invention, the content of the inorganic antifungal agent is 0.5 to 5% by mass. More preferably, it is 1-3 mass%. When the content is less than 0.5% by mass, the antifungal property cannot be exhibited sufficiently. In the present invention, if it exceeds 5% by mass, the spinning operability is deteriorated and the yarn quality is impaired, so that it is not practical.

The synthetic fiber multifilament of the present invention has a total fineness of 200 dtex or less. Among these, 150 dtex or less is preferable, and 100 dtex or less is more preferable. Moreover, the minimum of the total fineness is about 15 dtex from the ease of handling as a textile product.
The single yarn fineness of the synthetic fiber multifilament of the present invention is less than 6 dtex. Among these, 5 dtex or less is more preferable, and 3 dtex or less is more preferable. Moreover, considering that there is a possibility that the yarn may be broken by stretching or the like when the particle size of the agent is close, the lower limit of the single yarn fineness is preferably 1.5 dtex or more.
When the total fineness exceeds 200 dtex, the surface area of the fiber becomes small, and the density of the inorganic antifungal agent particles arranged on the fiber surface layer becomes small, so that the antifungal property cannot be sufficiently exhibited. Further, when the single yarn fineness is 6 dtex or more, the surface area of the fiber is reduced, the exposure of the inorganic antifungal agent to the fiber surface layer is reduced, and the antifungal property is not sufficient.
In the present invention, by containing a specific amount of a specific inorganic antifungal agent, and making the total fineness, single yarn fineness a multifilament in a specific range, the antifungal agent is effectively utilized, It is a fiber with excellent antifungal durability. Such a multifilament of the present invention has good yarn quality.

  The number of filaments of the synthetic fiber multifilament of the present invention is preferably 3 to 200, more preferably 12 to 96, from the viewpoint of maintaining good antifungal properties.

  The strength of the synthetic fiber multifilament of the present invention is preferably 3 cN / dtex or more. If it is less than 3 cN / dtex, the fungicide contained in the fiber may cause problems in subsequent processes such as yarn breakage in the weaving process and processing process.

  The fiber cross section of the synthetic fiber multifilament of the present invention is not particularly limited, and examples thereof include a round cross section, a polygonal cross section such as a triangle and a square, a hollow shape, and a flat shape.

  The number of fluffs per million meters of the synthetic fiber multifilament of the present invention is preferably 2 or less. If it is this range, post-process passability, such as a normal knitting process and a processing process, will become favorable. More preferably, fluff is not included.

  In the synthetic fiber multifilament of the present invention, it is preferable that an antifungal agent is disposed on the fiber surface layer in order to impart antifungal properties, and at least a part of the antifungal agent fine particles are exposed on the fiber surface. It is preferable. By adopting such an arrangement, the antifungal property becomes better.

  Moreover, in the synthetic fiber multifilament of the present invention, in the SUS running test described later, it is preferable that the disconnection time when running on the SUS line is 10 minutes or more, more preferably 30 minutes or more. If the disconnection time is less than 10 minutes, wrinkles, needles, pins, etc. may be scraped by the fiber surface layer agent in the subsequent process, which tends to reduce process passability such as weaving and false twisting processes and false twisting processes. There is.

The antifungal activity value (ISO 13629-1; 2012 method (luminescence measurement method)) of the multifilament of the synthetic fiber of the present invention is preferably 3.3 or more, and more preferably 3.5 or more.
Moreover, it is preferable that these anti-fungal activity values after washing (JIS L 0217,103) 10 times are 3.0 or more.
Generally, when the antifungal activity value is 2.0 or more, it is said that the mold has antifungal properties, but the synthetic fiber multifilament of the present invention can be more excellent in antifungal properties. .
Moreover, by setting it as such a range, even when other textiles are mixed and a textiles product is manufactured, what was excellent in mold prevention property can be obtained.
The above-mentioned antifungal activity value targets black mold, black mold fungus, blue mold, and ringworm fungus, and these molds preferably satisfy the above antifungal activity value range.

  Furthermore, in the synthetic fiber multifilament of the present invention, in the fungus resistance test of JIS Z 2911: 2010 method (use of mixed spore solution of black mold, black mold, blue mold, ringworm fungus), the determination after 14 days is 0, that is, mold It is preferable that no growth is observed. In this test, when the growth is recognized as 1 or 2, the mold and fungus grow to form a colony, and when used for a curtain or the like, it is inferior in mold resistance.

  The synthetic fiber multifilament of the present invention can be variously used as a fiber structure made of a fabric such as a woven fabric, a knitted fabric or a non-woven fabric.

  The fabric using the synthetic fiber multifilament of the present invention may use 100% synthetic fiber, may be used at least in part, and may be suitable for the intended use. From the viewpoint of providing good antifungal properties, it is preferable to use 25% or more, more preferably 50% or more based on the fabric.

  Further, the fabric using the synthetic fiber multifilament of the present invention has an antifungal activity value (ISO 13629-1; 2012 method (luminescence measurement method)) of 2.0 or more, and after 10 washings of JIS L 0217,103. It is preferable to mix the synthetic fiber multifilament of the present invention so that the antifungal activity value is 2.0 or more.

Next, the suitable manufacturing method of the synthetic fiber of this invention is demonstrated concretely.
The following is an example of a method for producing a synthetic fiber using a polyethylene terephthalate master batch to which an antifungal agent is added and a polyethylene terephthalate resin.

First, as a polyethylene terephthalate master batch to which an antifungal agent is added, a polyester resin containing 10 to 20% by mass of the inorganic antifungal agent having the above average particle diameter and a polyethylene terephthalate resin as a dilution resin are prepared.
These resins are mixed by dry blending, melted, and discharged from a spinneret. Subsequently, after cooling the yarn and applying the oil agent, the undrawn yarn is once wound around the wound body. Thereafter, the undrawn yarn wound around the wound body is drawn out, drawn, and then heat treated to wind up the wound body to obtain the synthetic fiber multifilament of the present invention.

  The spinning draft is preferably 10 to 150, more preferably 30 to 90. When the spinning draft is less than 10, the draw ratio becomes high in the drawing process, and the deformation amount of the fiber becomes high. Along with this, there is a possibility that the agent inhibits deformation and causes thread breakage. Furthermore, when the spinning draft exceeds 180, the deformation speed of the yarn immediately under the nozzle is very fast, and the movement of the contained agent cannot catch up, causing yarn breakage and reducing spinning operability. It may be a factor. Therefore, the nozzle hole diameter and spinning speed should be selected so that a suitable spinning draft is obtained.

  The spinning temperature (temperature discharged from the spinneret) is, for example, preferably 270 to 300 ° C., more preferably 280 to 295 ° C.

  The spinning speed (the speed at which the undrawn yarn is wound up) is, for example, preferably 600 to 3500 m / min, and more preferably 800 to 1800 m / min.

  The stretching speed is preferably, for example, 500 to 1200 m / min, and more preferably 600 to 1000 m / min.

  As heat processing temperature in an extending process, 100-180 degreeC is preferable, for example, More preferably, it is 120-160 degreeC.

  As a draw ratio, DR is preferably 2.0 to 4.5, and more preferably DR is 3.0 to 4.0. When DR exceeds 4.5, the amount of deformation of the fiber increases. Along with this, there is a possibility that the agent inhibits deformation and causes thread breakage. Furthermore, when DR is less than 2.0, it is necessary to increase the spinning draft, and the deformation speed of the yarn immediately under the nozzle is very fast. This may cause a decrease in spinning operability.

The above is an example of a method (conventional method) in which an undrawn yarn is wound once and then stretched (conventional method). Thus, the synthetic fiber of the present invention may be manufactured.
In this case, the winding speed is preferably 3000 to 4500 m / min, and more preferably 3000 to 4000 m / min.

  The synthetic fiber multifilament of the present invention may be in any form such as undrawn yarn, semi-drawn yarn (highly oriented undrawn yarn), drawn yarn and the like.

  In the manufacturing method described above, a method for obtaining a drawn yarn was exemplified. However, in the case of obtaining a highly oriented undrawn yarn, the resin is melted and discharged, cooled, and an oil agent is applied in the same manner as the conventional method described above. After that, it is guided to the first goded roll, and then it can be obtained by winding a highly oriented semi-drawn yarn around the wound yarn through the second goded roller having the same speed as the first goded roll. Each goded roll is preferably about 3000 to 4500 m / min at a constant speed, and more preferably 3000 to 4000 m / min.

Hereinafter, the present invention will be described in detail with reference to examples. In addition, this invention is not limited to the Example described below. In addition, the measuring method in an Example and a comparative example is as follows.

A. Breaking strength and breaking elongation Measured according to JIS-L-1013 using an AGS-1KNG autograph tensile tester manufactured by Shimadzu Corporation under the conditions of a sample yarn length of 20 cm and a constant speed tensile speed of 20 cm / min. The value obtained by dividing the maximum value of the load on the load-elongation curve by the fineness is defined as the breaking strength (cN / dtex), and the elongation at that time is defined as the breaking elongation (%).

B. Average particle diameter Photographed using a transmission electron microscope (transmission electron microscope JEM-1230 manufactured by JEOL Ltd.), and an automatic image processing device (LUZEX AP (manufactured by Nireco)) Measurements were made and the specific gravity was calculated to determine the weight average particle size.

C. Spinning operability: Good passability of the process is indicated by ◯, low passability by the process is indicated by Δ, and passability of the process is poor or the yarn cannot be produced.

D. Stainless fiber abrasion cutting test (SUS running test)
The evaluation fiber is run at a yarn speed of 150 m / min perpendicular to a stainless wire (SUS315) having a wire diameter of 35 μm to which a load of 10 g is applied. At this time, since the wire is worn by rubbing the evaluation fiber and the stainless steel wire, the time until cutting is measured.
The longer the time required for cutting, the better the process passability of the spinning and drawing process and the subsequent post-processing process. Therefore, the time until cutting shown below was evaluated. If the time until cutting is more than Δ, there is usually no problem.
When the cutting time was less than 10 min, ×, when it was less than 10-30 min, Δ, and when it was not disconnected for 30 min or more, ◯.

E. The number of fluff was run on a fluff detector (made by Kasuga Denki) for 100,000 m at a yarn speed of 400 m / min, and converted to the number of fluff per million m to obtain the number of fluff. The number of fluff was measured using a fluff detector counter.

F. Mold Resistance Test A mold resistance test fabric was prepared as follows.
A cylindrical knitted fabric having two knitted yarns of synthetic fibers and a number of wales of 30 / 2.54 cm and a number of courses of 60 / 2.54 cm was prepared as Comparative Sample (A). As the reference sample, the same sample as the comparative sample (B) was prepared except that it did not contain the mold and antibacterial components. As a pretreatment method for these fabrics, it is opened, washed with hot water (60 ° C for 1 minute), dehydrated and dried (usually polyester set temperature of 190 ° C, 1 minute 35 seconds, set so that the tubular knitting is flattened) The dough was used as the original fabric.
The fungus resistance test is performed by the following method, and the antifungal activity value by ISO 13629-1; 2012 method (luminescence measurement method) and the determination after 14 days by JIS Z 2911: 2010 method (textile product test wet method) are obtained. It was.
<Antifungal activity value>
As for the raw fabric, according to ISO 13629-1; 2012 method (luminescence measurement method) Activity values were determined. Next, based on JIS L 0217,103, industrial washing was performed 10 times, and the antifungal activity value was similarly obtained by the ISO 13629-1; 2012 method to obtain the antifungal activity value after washing.
<Decision after 14 days>
JIS Z 2911: 2010 method (wet testing of textile products) (Apergillus niger NBRC 105649) A resistance test was performed. The judgment criteria after 14 days are shown below.
0 Mycelial growth is not recognized 1 Mycelial growth is observed and the area of mycelial growth does not exceed 1/3 of the total area 2 Mycelial growth is observed and the area of mycelial growth is More than 1/3 of the total area

[Example 1]
Polyethylene terephthalate masterbatch (manufactured by Fuji Chemical: FK-) containing polyethylene terephthalate (IV: 0.670 dl / g) containing 0.04% by mass of titanium oxide and 20% by mass of an antifungal agent for glass supporting silver and zinc. 43; average particle diameter 2.0 μm, silver content 0.5 mass%, zinc content 19 mass%). Both resins were dried to around 20 ppm, blended with a mixer so that the fungicide concentration in the fiber was 1.0 mass%, and introduced into an extruder. These resins were discharged from a spinneret having a round discharge hole at a spinning temperature of 295 ° C. Thereafter, PTR was taken at 1090 m / min, and a synthetic fiber multifilament with a fineness of 84 dtex / 24f was obtained under the conditions of GR1 (90 ° C.) of 1100 m / min and GR2 (135 ° C.) of 3800 m / min. Here, tension was applied between PTR-GR2, stretched between GR1 and GR2 (stretching ratio: 3.49), and heat treatment was performed with GR2, and the resultant was wound on a winder to obtain a synthetic fiber multifilament.

[Comparative Example 1]
Example 1 except that polyethylene terephthalate (ultimate viscosity IV: 0.670 dl / g) added with 0.04% by mass of titanium oxide was discharged from a spinneret having a round discharge hole at a spinning temperature of 295 ° C. Similarly, a synthetic fiber multifilament was obtained.

[Examples 2 to 5, Comparative Examples 2 and 3]
A synthetic fiber multifilament was obtained in the same manner as in Example 1 except that the fungicide concentration was changed to 0.3 to 6.0% by mass.

[Example 6, Comparative Example 4]
A synthetic fiber multifilament was obtained in the same manner as in Example 3 except that the fineness was changed to 167 dtex / 48f and 450 dtex / 96f.

Table 1 shows the results of physical properties and mold resistance tests of the synthetic fiber multifilaments obtained from Examples 1 to 7 and Comparative Examples 1 to 3.

As shown in Table 1, the synthetic fiber multifilaments obtained from Examples 1 to 6 have ISO 13629-1; 2012 method (luminescence measurement method). 3.3 or more, and the antifungal activity value after washing 10 times was 3.0 or more.
In addition, the antifungal activity value of the raw fabric is 3.3 or more, and the antifungal activity value after washing is 3.0 or more, against mold, mold, and ringworm. It was excellent in nature.
Moreover, in the mold resistance test of JIS Z 2911: 2010 method (textile product test wet method), the determination was 0, and no growth of mold was observed after 14 days.
Thus, the synthetic fiber multifilament obtained from Examples 1-6 had high mold resistance, and was excellent in mold resistance and mold resistance durability. In all cases, the spinning operability was good, the fluff was few, and the yarn quality was good. In particular, the synthetic fiber multifilaments obtained from Examples 1 to 3 and 6 had no fluff, excellent yarn quality, and excellent post-processability.

  On the other hand, since the synthetic fiber multifilament obtained from Comparative Example 1 had no antifungal agent added thereto, in any of the tests, there was no mold resistance and no antifungal property was obtained.

In addition, the synthetic fiber multifilament containing 0.3% by mass of the antifungal agent of Comparative Example 2 is an antifungal agent against the mold and the mold after washing in the mold resistance test of ISO 13629-1; 2012 method (luminescence measurement method). The activity value was less than 3.0.
In addition, the antifungal activity values of Aspergillus niger, Blue mold, and Ringworm fungus are as follows: Kurokouji (2.0), Blue mold (2.3), Ringworm fungus (2.4), and 10 times after washing. 9), blue mold (2.0) and ringworm (1.9). Also, in the JIS Z 2911: 2010 method (textile product test wet method), it was 1 after 14 days, and some mold growth was confirmed.
Thus, the synthetic fiber multifilament obtained from Comparative Example 2 was inferior in mold resistance and mold resistance compared to those obtained from Examples 1-6.
In addition, the synthetic fiber multifilament containing 6% by mass of the anti-mold agent of Comparative Example 3 is excellent in anti-mold and anti-mold properties, but has poor spinning operability, a lot of fluff and inferior yarn quality, and passes through the post-process. The sex was also poor.

  The 450 dtex / 60 f synthetic fiber multifilament obtained from Comparative Example 4 was a raw fabric with an antifungal activity value of less than 3.3 against the black mold in the above-mentioned ISO mold test, and the antifungal activity value after washing Was less than 3.0 and was inferior in mold resistance and mold resistance compared to the multifilaments obtained from Examples 1-6. This has a total fineness of 450 dtex and a single yarn fineness of 4.3 dtex. Compared with the product of the example, the surface area of the fiber is smaller with respect to the thickness of the fiber, and the antifungal agent particles arranged on the fiber surface layer It is considered that the mold prevention property is lowered because the density of the powder becomes small.

  Moreover, the shower curtain was manufactured using the synthetic fiber multifilament obtained from Examples 1-6 and Comparative Examples 1-4, and the evaluation of JISZ2911: 2010 method (the test wet method of a textile product) was implemented. However, molds did not occur even when the example product was used for 14 days, but molds had adhered to Comparative Example 1 by 7 days and Comparative Examples 2 and 4 by 14 days.

[Examples 7 to 9, Comparative Example 5]
A synthetic fiber multifilament was obtained in the same manner as in Example 3 except that the average particle diameter of the fungicide was changed to 0.6 to 8.0 μm.
Table 2 shows the results of physical properties and mold resistance tests of the synthetic fiber multifilaments obtained from Examples 3 and 7 to 9 and Comparative Example 5.

  The synthetic fiber multifilaments obtained from Examples 7 to 9 are all antifungal activity values of raw fabrics for black mold in the mold resistance test of ISO 13629-1; 2012 method (luminescence measurement method). Was 3.3 or more, and the antifungal activity value after 10 industrial washings was 3.0 or more. Moreover, the antifungal activity value of the original fabric was 3.3 or more, and the antifungal activity value after washing was 3.0 or more for the black mold, blue mold and ringworm. In JIS Z 2911: 2010 method (textile product test wet method), the determination after 14 days was 0, and no growth of mold was observed. As described above, all of the synthetic fiber multifilaments obtained from Examples 7 to 9 were excellent in antifungal properties and antifungal durability, and also had good spinning operability, yarn physical properties, and yarn quality. In addition, the inorganic antifungal agents having the particle diameters of 2.0 μm and 3.5 μm in Examples 3 and 9 are particularly excellent in both yarn properties and spinning operability, and have excellent post-processability. There was no good quality.

  A synthetic fiber multifilament having a particle size of 8.0 μm of the inorganic antifungal agent obtained from Comparative Example 5 has an antifungal activity value of 2 for 10 times after washing with a raw fabric against black mold in the ISO method. 8 and 2.5, and even in the JIS method, some growth of mold was observed after 14 days, and the antifungal property was inferior to the products of the examples. In the ISO method, the antifungal activity value of the raw fabric against black mold, blue mold and ringworm is as follows: black mold (2.9), blue mold (2.7), ringworm (2.9) and 10 times. The antifungal activity values after washing were black mushroom (2.8), blue mold (2.7) and ringworm fungus (2.7), and these also had low fungicidal properties. This is presumably because the antifungal agent has a large particle size, so that the number of particles present in the fiber is reduced and the exposure to the fiber surface layer is reduced, so that the antifungal property is lowered. In addition, the spinning operability and the stability of the ballast directly under the nozzle were poor, and in the drawing process, the yarn could not withstand deformation of the yarn, resulting in frequent breakage. Moreover, the strength of the obtained fiber was low and fluff was frequently generated, and 6.5 fibers per 1 million meters were mixed. Although there was no problem in the running test of the SUS wire, it is considered that the presence of the fungicide on the fiber surface layer is low because the particle size of the fungicide is large, and the SUS wire wear is small and the wire is not broken. .

  When the shower curtain was manufactured using the synthetic fiber multifilament obtained from Examples 7 to 9 and Comparative Example 5, in JIS Z 2911: 2010 method (textile product test wet method), the example product was 14 Mold was not generated even when used for more than a day, but the mold obtained from Comparative Example 5 had mold attached by 14 days.

[Examples 10 to 15, Comparative Example 6]
Synthetic fiber multifilaments were obtained in the same manner as in Example 3 except that the spinning speed, nozzle hole diameter, number of filaments, spinning draft, single yarn fineness, and the concentration of the fungicide in the fiber were changed. Table 3 shows the physical properties of the synthetic fibers obtained from these and Example 3 and the results of the mold resistance test.

Synthetic fiber multifilaments obtained from Examples 3 and 10 to 14 were used for antifungal resistance test by ISO 13629-1; 2012 method (luminescence measurement method) against black mold, black mold, blue mold and ringworm. The antifungal activity value was 3.3 or more and the antifungal activity value after washing 10 times was 3.0 or more. Moreover, as for any synthetic fiber, the determination after 14 days was 0 by the JIS Z 2911: 2010 method (textile product test wet method), and no growth of mold was observed.
The fibers obtained from Examples 3, 11, and 12 were particularly excellent synthetic fibers having excellent yarn physical properties and spinning operability, excellent post-processability, and no fluff.
In the synthetic fiber multifilament of Comparative Example 6, the antifungal activity value of the original fabric is less than 3.3 in the mold of the mold prevention ISO 13629-1; 2012 method mold resistance test (luminescence measurement method), after 10 times of industrial washing The antifungal activity value was less than 3.0, and the antifungal property was poor.

  When shower curtains were manufactured using the synthetic fiber multifilaments obtained from Examples 3 and 10 to 14 and Comparative Example 6, the results were evaluated in accordance with JIS Z 2911: 2010 method (textile product test wet method) evaluation. The product did not generate mold even when used for 14 days or more, but in Comparative Example 6, mold had adhered by 14 days.

  In this way, by selecting the fineness, proper spinning draft, concentration of inorganic antifungal agent and particle size, it is possible to improve antifungal properties, antifungal durability, spinning operability, and good yarn properties and yarn quality. Synthetic fiber multifilaments can be obtained. Furthermore, by selecting an appropriate concentration and particle diameter of the inorganic antifungal agent, it is possible to improve post-process passability such as a weaving and knitting process.

比較例品と比較して実施例品は、防カビ性及び防カビ耐久性に優れていた。 [Race curtain evaluation]
Next, a tricot fabric was manufactured using 50% of the synthetic fiber multifilaments obtained from Example 3, Comparative Example 4 and Comparative Example 6, respectively, and a lace curtain with the multifilaments exposed on the entire back surface was manufactured. . As a comparison object, a fabric was manufactured using 100% of the synthetic fiber multifilament obtained from Comparative Example 1, and a lace curtain was manufactured. Table 4 shows the results of the antifungal resistance test performed on the lace curtains using each synthetic fiber multifilament.

In comparison with the comparative product, the product of the example was superior in antifungal properties and antifungal durability.

比較例品と比較して実施例品は、防カビ性及び防カビ耐久性に優れていた。 [Shower curtain evaluation]
Next, a shower curtain in which all the synthetic fiber multifilaments of Example 3 and Comparative Examples 4 and 6 were mixed at 50% was introduced into the warp. Moreover, as a comparison object, a fabric was manufactured using 100% of the synthetic fiber multifilament of Comparative Example 1, and a shower curtain was manufactured. Table 5 shows the results of the antifungal resistance test performed on these shower curtains.

In comparison with the comparative product, the product of the example was superior in antifungal properties and antifungal durability.

  The synthetic fiber multifilament of the present invention has excellent anti-mold and anti-mold properties, so it is suitable for curtain materials such as blind curtains, boil curtains, shower curtains, lace curtains, textile products such as screen doors, and water. Available to:

Claims (4)

A multifilament composed of an inorganic antifungal agent having a metal component supported on glass and a thermoplastic resin, having a total fineness of 200 dtex or less and a single yarn fineness of less than 6 dtex. Synthetic fiber multifilament which is fine particles having an average particle diameter of 0.6 to 3.5 μm carrying at least one of zinc and silver and containing 0.5 to 5% by mass of an inorganic fungicide in the fiber . The inorganic antifungal agent is such that at least one of zinc and silver is supported on glass, and the zinc content relative to the agent is 15 to 25% by mass, and the silver content is 0.1 to 3% by mass. 1. The synthetic fiber according to 1. The synthetic fiber according to claim 1 or 2, wherein the strength is 3 cN / dtex or more and the number of fluffs per million m is 2 or less. A step of mixing the inorganic antifungal agent master batch and the diluted resin, a step of melt spinning the mixture at a spinning draft of 10 to 150, a fiber obtained by melt spinning of a draw ratio of 2.0 to 4.5 The method for producing a synthetic fiber according to any one of claims 1 to 3, wherein the synthetic fiber is produced by a direct spinning drawing method including a step of drawing at a double rate.