JP2016135930A - Flame-retardant/antifouling fabric, pollen catching/antifouling fabric and curtain using these fabrics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of imparting both antifouling property and flame retardancy to a flame-retardant fabric including a flame-retardant polyester fiber or the like and a method capable of imparting both antifouling property and pollen-catching capability to a crimped fabric including a crimped fiber or the like.SOLUTION: An antifouling fabric 1 has colloidal silica 4 applied to a flame-retardant fabric 3' including a flame-retardant polyester fiber 2' having flame retardancy. An antifouling fabric has colloidal silica and a flame retardant applied to a fabric including a polyester fiber in which the flame retardant is applied by post-processing. An antifouling fabric has colloidal silica applied to a crimped fabric including a crimped fiber subjected to crimping and an antifouling fabric has colloidal silica applied to any of the above-mentioned antifouling fabrics without using any binder resin.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an antifouling fabric having flame retardancy and antifouling properties, an antifouling fabric having pollen catching properties and antifouling properties, and a curtain (roll screen, roman) using this antifouling fabric. (Including shades).

Conventionally, an antifouling fiber structure is known (patent document 1).
This antifouling fiber structure contains a phosphorous compound inside a single fiber of a polyester fiber, and an organosilicate is attached to the surface of the single fiber.

JP 2001-81675 A

However, when the object to be adhered to the short fiber surface is an organosilicate, such as the antifouling fiber structure described in Patent Document 1, <1> JIS-L-1091: 1999 A-1 method Is performed in accordance with JIS-L-1091: 1999 A-1 method, either after 1 minute heating and after 3 seconds of flame, the combustion area exceeds 30 cm ² , or afterflame time Exceeds 3 seconds, or afterflame time + residual time exceeds 5 seconds, <2> JIS-L-1091: In accordance with the A-2 method of 1999, JIS-L- 1091: After 2 minutes of heating according to the A-2 method of 1999 and after 6 seconds of flame, the combustion area exceeds 40 cm ² , or after flame time exceeds 5 seconds, or after flame time + remaining flame Dust time exceeds 20 seconds, <3> JIS-L-1091: 199 It corresponds to any one of <1> to <3> in which the number of flame contacts according to method D of 9 is 2 or less, and sufficient flame resistance (flameproof) cannot be secured ( (See Comparative Examples 2 and 4 described later).
This is considered that the flame retardance is inhibited by the organosilicate to be adhered.

Therefore, in order to ensure flame retardancy, an antifouling fiber structure in which the amount of organosilicate to be adhered is reduced is put in a bag together with artificial contaminants according to the A-2 method of JIS-L-1919: 2012. When the antifouling test is performed, the antifouling evaluation value H calculated by the following formula (1) is 0.51, and this time, sufficient antifouling properties cannot be ensured (Comparative Example described later). 3).

Antifouling evaluation value H = | L0−L1 | / L0 (1)

(In Formula (1), L0 is L ^* a ^* b ^* L ^{* of the} color system defined by JIS-Z-8781-4: 2013 of the surface of the antifouling fabric before the antifouling test) L1 is an L ^* value of the L ^* a ^* b ^* color system defined in JIS-Z-8781-4: 2013 on the surface of the antifouling fabric after the antifouling test. .)

Also, for pollen such as cedar and cypress, which are the cause of pollinosis, which is also a social problem, contrivances are made so that they do not stick to clothes as much as possible, and the scattering of pollen brought into the room is reduced. Therefore, it is performed to catch (catch) pollen by applying an adhesive process.
However, the application of tackiness causes not only pollen but also dirt to be attached at the same time, so that there is a problem that antifouling and pollen catching cannot be achieved simultaneously (see Comparative Example 5 described later).

Accordingly, the present invention provides “antifouling” by providing colloidal silica to a flame retardant fabric or the like containing a flame retardant polyester fiber (that is, providing colloidal silica to a fabric having flame retardancy). An object of the present invention is to provide an antifouling fabric that achieves both “flame resistance” and a curtain using the fabric.
In addition, the present invention provides an antifouling fabric that achieves both “antifouling property” and “pollen catching property” by applying colloidal silica to a crimped fabric containing crimped fibers, and the like. It aims at providing the curtain etc. which used.

  The first feature of the antifouling fabric 1 according to the present invention is that colloidal silica is imparted to a flame retardant fabric containing a flame retardant polyester fiber having flame retardancy.

  The second feature of the antifouling fabric 1 according to the present invention is that colloidal silica and a flame retardant are applied to a fabric containing polyester fibers, and the flame retardant is applied by post-processing.

  The third feature of the antifouling fabric 1 according to the present invention is that it contains crimped crimped fibers in addition to the first or second feature.

  A fourth feature of the antifouling fabric 1 according to the present invention is that colloidal silica is imparted to a crimped fabric containing crimped crimped fibers.

The fifth feature of the antifouling fabric 1 according to the present invention is that when the pollen catch test is performed, in which the antifouling fabric having the first to fourth features is put in a bag together with pseudo pollen and mixed. The color difference ΔE ^* ab of the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface of the antifouling fabric before and after the pollen catch test is 12.00 or more. In the point.

A sixth feature of the antifouling fabric 1 according to the present invention is a pollen catch test in which an antifouling fabric in which colloidal silica is added to a fabric containing polyester fibers is put in a bag together with simulated pollen and mixed. In this case, the color difference ΔE ^* ab of the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface of the antifouling fabric before and after the pollen catch test is 12.00. That is the point.

  A seventh feature of the antifouling fabric 1 according to the present invention is that, in addition to the first to sixth features, the colloidal silica is applied without using a binder resin.

The eighth feature of the antifouling fabric 1 according to the present invention is that, in addition to the above first to seventh features, 1 minute heating and flame deposition for 3 seconds in accordance with the A-1 method of JIS-L-1091: 1999. In either case, the combustion area is 30 cm ² or less, the afterflame time is 3 seconds or less, and the afterflame time + residue time is 5 seconds or less, or JIS-L-1091: 1999 A -2 both after 2 minutes heating and after 6 seconds of flame, the combustion area is 40 cm ² or less, the after flame time is 5 seconds or less, and the after flame time + residual time is 20 seconds or less. At the same time, the number of flame contact according to the D method of JIS-L-1091: 1999 is 3 or more.

The ninth feature of the antifouling fabric 1 according to the present invention is that the antifouling fabric having the first to eighth features is an artificial pollutant according to the A-2 method of JIS-L-1919: 2012. When the antifouling test which mixes in a bag and shakes is performed, the antifouling property evaluation value H computed by following formula (1) is 0.48 or less, The antifouling fabric characterized by the above-mentioned.

Antifouling evaluation value H = | L0−L1 | / L0 (1)

(In Formula (1), L0 is L ^* a ^* b ^* L ^{* of the} color system defined by JIS-Z-8781-4: 2013 of the surface of the antifouling fabric before the antifouling test) L1 is an L ^* value of the L ^* a ^* b ^* color system defined in JIS-Z-8781-4: 2013 on the surface of the antifouling fabric after the antifouling test. .)

Due to these characteristics, by adding colloidal silica 4 to a flame retardant fabric 3 ′ including a flame retardant polyester fiber 2 ′ having flame retardancy, it is different from the case where organosilicate is applied as in Patent Document 1. In addition, it is difficult to get dirt such as darkening, and sufficient antifouling properties can be secured, and at the same time, sufficient flame retardancy can be secured (see Examples 1 to 6 and 8 described later).
That is, it is possible to achieve both “antifouling” and “flame retardant”.

In addition, the “antifouling property” in the present invention means “hardness to dirt of fiber products and / or easy removal of dirt attached” as defined in JIS-L-1919: 2012, Specifically, as mentioned in JIS-L-1919: 2012 method A-2, “dry powder containing fine particles such as dust or pollen floating in the air of textile products” "Anti-fouling property against pollutants" may be included.
“Flame retardancy” in the present invention is defined as “material that suppresses, ends, or prevents the phenomenon of burning by burning, as defined in Annex 1 of JIS-L-1091: 1999. Means "property" and is also called "flameproof" or "flameproof".
The “flame retardant polyester fiber 2 ′” in the present invention refers to a polyester fiber 2 kneaded with the flame retardant 5 or a polyester fiber at the time of producing the polyester fiber 2 using a copolymerizable phosphorus compound as the flame retardant 5. It means not only the polyester fiber 2 copolymerized with the constituting repeating units, but also the one provided with the flame retardant 5 by post-processing on the polyester fiber 2 (polyester fiber 2 subjected to yarn flame retardant processing). .
In the present invention, “flame retardant 5” is “added to a material in order to suppress the spread of the flame, significantly reduce or delay, as defined in Annex 1 of JIS-L-1091: 1999. A flame retardant added and kneaded at the time of melt spinning of the polyester fiber 2, and a copolymerizable phosphorus compound used as a repeating unit constituting the polyester fiber at the production of the polyester fiber 2 Including.
In the present invention, “post-processing” refers to processing for spinning the fiber yarn itself, processing to be performed on the fiber yarn after spinning (post-processing), or processing to the entire fabric including the fiber yarn. Meaning post-fabric processing, for example, fiber yarn itself, or the entire fabric, immersion processing that imparts colloidal silica 4 or flame retardant processing that imparts flame retardant 5 (after flame retardant yarn processing, or It means post-processing of flame-retardant fabrics, dyeing processing after spinning and spinning, dipping processing, coating processing on fiber yarns, and the like.
“Including” in the present invention means “weaving” a fiber yarn such as flame retardant polyester fiber 2 ′ or polyester fiber 2 described later to make flame retardant fabric 3 ′ or fabric 3, or fiber yarn. This means “knitting” the braid into the flame retardant fabric 3 ′ or the fabric 3, and “inserting (inserting)” the fiber yarn into the flame retardant fabric 3 ′ or the fabric 3; The flame retardant fabric 3 'and the fabric 3 include fiber yarns such as the flame retardant polyester fiber 2' and the polyester fiber 2 such as "forming a non-woven fabric" which is one of the flame retardant fabric 3 'and the fabric 3. Any configuration may be used as long as it is possible.
In the present invention, “providing” means that, other than kneading the flame retardant 5 or copolymerizing the flame retardant 5, the flame retardant polyester fiber 2 ′, the polyester fiber 2 described later, and the crimped fiber described below. It also means that the colloidal silica 4 and the flame retardant 5 are attached to the 2 ″ flame retardant fabric 3 ′ and the crimped fabric 3 ″ described later by post-processing.
The method of application is not particularly limited, and for example, as the above-mentioned kneading or copolymerization, post-processing, dyeing processing, padding processing, spray processing, coating processing, immersion processing, etc. can be used, The binder resin for attaching the colloidal silica 4 and the flame retardant 5 includes both use and non-use.
When the colloidal silica 4 or the flame retardant 5 is adhered in the dyeing process, the flame retardant 5 or the like may be added together with the dye, or interposed between the flame retardant polyester fiber 2 ′ or the like and the colloidal silica 4 or the like. The presence or absence of a binder resin that facilitates adhesion to the fiber yarn is not questioned.
Immersion processing may be performed as a single step, but after dyeing / washing, one bath two-step processing (processing such as simultaneous staining and antifouling) takes the step of adding colloidal silica 4 etc. in the same bath. You may do. Oiling (oiling agent) is used for the purpose of improving weaving and knitting properties after dyeing / washing. In this processing, dip processing using oiling agent and colloidal silica 4 or the like (that is, dyeing / It is possible to impart “antifouling property” and “flame retardant” to the fiber yarn without increasing the number of steps by carrying out one bath and two-stage processing using the same bath after washing.

  On the other hand, the colloidal silica 4 and the flame retardant 5 are provided to the fabric 3 including the polyester fiber 2, and among these, the flame retardant 5 is provided by post-processing, so that “stain resistance” and “flame retardant” are provided. You may implement | achieve coexistence (refer Example 7 mentioned later).

In addition, by applying colloidal silica 4 to the crimped fabric 3 ″ including the crimped crimped fiber 2 ″, pollen can be captured (catched) and at the same time, it can be said that it is difficult to get dirt (see below). (See Example 8).
That is, both “antifouling properties” and “pollen catching properties” can be achieved.
The “crimped fiber 2” in the present invention means a crimped fiber yarn, and the material of the fiber yarn to be crimped is, for example, a polyester fiber 2 or the like. It doesn't matter.
“Pollen catchability” in the present invention means “ease of catching pollen of fiber products (ease of catching)”.

Furthermore, the color difference ΔE ^* ab of the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface of the antifouling fabric before and after the pollen catch test is set to 12.00 or more. Thus, the predetermined “pollen catching property” can be secured, and at the same time, “antifouling property” can be realized (coexistence of “antifouling property” and “pollen catching property”).

  Then, by applying the colloidal silica 4 without using the binder resin, the binder resin itself does not burn and the higher flame retardancy can be secured.

In addition, <1> combustion area according to JIS-L-1091: A-1 method of 30 cm ² or less, after flame time 3 seconds or less, and after flame time + residual time 5 <2> Combustion area according to JIS-L-1091: 1999 A-2 method is 40 cm ² or less, afterflame time is 5 seconds or less, and afterflame time + residual At the same time that the dusting time is 20 seconds or less, a predetermined “flame retardance” can be ensured by setting the number of flame contacts in accordance with the D method of <3> JIS-L-1091: 1999 to 3 times or more.

The “combustion area” in the present invention means, as defined in JIS-L-1091: 1999, “a damage range of a material destroyed by combustion or thermal decomposition under a specified test condition”. .
As used in JIS-L-1091: 1999, “residual flame time” in the present invention is defined as “the time during which a material continues to generate a flame after the ignition source is removed under specified test conditions. It means "length" and is also called "flame duration".
The “residual time” in the present invention is, as defined in Annex 1 of JIS-L-1091: 1999, “After the ignition source is removed or the flame has disappeared under the specified test conditions. It means "the length of time that the red heat of the later material lasts" and is also called "the duration of the residue".

By setting the antifouling property evaluation value H calculated by the following formula (1) in the antifouling test to 0.48 or less, a predetermined “antifouling property” can be ensured.

Antifouling evaluation value H = | L0−L1 | / L0 (1)

In the present invention, “L0” means L ^* a ^* b ^* L ^{* of the} color system defined by JIS-Z-8781-4: 2013 on the surface of the antifouling fabric before the antifouling test ^. “L1” in the present invention is the value of the L ^* a ^* b ^* color system defined in JIS-Z-8781-4: 2013 on the surface of the antifouling fabric after the antifouling test. L ^* value.
In the present invention, “| L0−L1 | / L0” is a value obtained by dividing the absolute value of the difference between L0 and L1 described above by L0 (quotient).

  The curtain 30 according to the present invention may have a first feature that the antifouling fabric 1 described above is used.

  Due to this feature, the curtain 30 can also ensure sufficient flame retardancy, antifouling properties and pollen catching properties compared to the case where organosilicate is applied, and can achieve both “antifouling properties” and “flame retardant properties”. It becomes possible to achieve both “antifouling properties” and “pollen catching properties”.

By providing colloidal silica to a fabric imparted with flame retardancy, both "antifouling properties" and "flame retardant properties" can be achieved.
By imparting colloidal silica to a crimped fabric containing crimped fibers, both “antifouling properties” and “pollen catching properties” can be achieved.

These are the schematic diagrams which illustrated the antifouling cloth (antifouling cloth containing a flame-retardant polyester fiber) concerning a 1st embodiment of the present invention. These are the schematic diagrams which illustrated the antifouling cloth (Antifouling cloth which was given a flame retardant by post-processing to the whole cloth) concerning a 2nd embodiment of the present invention. These are the schematic diagrams which illustrated the antifouling cloth (antifouling cloth containing the crimped crimped fiber) which concerns on 3rd Embodiment of this invention. These are the drawing substitute enlarged photographs which showed the external appearance after the antifouling test of the antifouling cloth concerning Example 1 of the present invention. These are the drawing substitute enlarged photographs which showed the external appearance after the antifouling test of the fabric which concerns on the comparative example 1 (the antifouling agent is not provided). These are the drawing substitute enlarged photographs which showed the external appearance after the antifouling test of the fabric which concerns on the comparative example 2 (given organosilicate as an antifouling agent).

<Anti-stain fabric 1>
Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show an antifouling fabric 1 according to the present invention.
Among these, FIG. 1 shows the antifouling cloth 1 according to the first embodiment of the present invention, and the cloth 3 is made of a cloth containing flame retardant polyester fiber (flame retardant polyester fiber 2 ′) (hard flame). By setting it as the flame cloth 3 ′), it has flame resistance as well as antifouling properties.
FIG. 2 shows an antifouling fabric 1 according to the second embodiment of the present invention. By imparting a flame retardant 5 by post-processing on the entire fabric 3, the antifouling property and flame retardancy are imparted. .
FIG. 3 shows an antifouling fabric 1 according to the third embodiment of the present invention, and the fabric 3 is a fabric (crimped fabric 3 ″) containing crimped fibers (crimped fibers 2 ″). In addition to antifouling properties, it has pollen catching properties.
1 to 3 show the antifouling fabric 1 and can also be said to represent a part of the curtain 30 using the antifouling fabric 1.

<Fabric 3, flame retardant fabric 3 ', crimped fabric 3 ">
The fabric 3, the flame retardant fabric 3 ′ or the crimped fabric 3 ″ used in the antifouling fabric 1 of the first to third embodiments may be a knitted fabric, a woven fabric, or a non-woven fabric.
When the fabric 3 or the like is a knitted fabric, the knitted fabric is knitted with warps or wefts. If the fabric 3 or the like is a warp knitted fabric knitted with only warp yarns, for example, a tricot knitting (also called a denby knitting. Specifically, a triple tricot knitting with three heels or a double tricot knitting with two heels. , A single tricot knitting or the like).

In addition, when the fabric 3 or the like is a warp knitted fabric, it may of course have a structure other than the tricot knitting, and the cord knitting (specifically, a single cord with a single heel exceeding three needle knittings) Knitting (1 × 3 single cord knitting), double cord knitting using two coffins, triple chord knitting using three coffins, etc., or Bandaique knitting (also called Atlas knitting. Any warp knitting structure such as a band knitting, a double-band knitting, a thread knitting knitting (lace knitting) or a pile knitting may be used.
When the fabric 3 or the like is a warp knitted fabric, an insertion yarn may be inserted in the weft direction.

If the fabric 3 or the like is a weft knitted fabric knitted only with wefts, any of flat knitting, rubber knitting, pearl knitting, tuck knitting, floating knitting, double knitting, through hole knitting (lace knitting), pile knitting, etc. A weft knitting structure or a circular knitting structure may be used.
Further, when the fabric 3 or the like is a weft knitted fabric, an insertion yarn may be inserted in the warp direction as in the case of a warp knitted fabric.

  When the fabric 3 or the like is a woven fabric, the woven fabric includes plain weaves in which warps and wefts are alternately intersected, and other fabrics such as twill weave (slanted weave) and satin weave, and these plain weave, twill weave, and satin weave. Any woven structure such as a changed structure obtained by changing the structure, a double structure (transply double structure, latitude double structure), a multiple structure more than double, and a textured structure (Jacquard texture) may be used.

<Polyester fiber 2>
The polyester fiber 2 in the present invention is a kind of fiber yarn, and as its material, polyethylene terephthalate (PET), polypropylene terephthalate (PPT), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), Examples include polyethylene naphthalate (PEN) and polybutylene naphthalate (PBN), but are not limited to these examples.
Such a polyester fiber 2 is included in the antifouling fabric 1 of the present invention.

In addition, the antifouling fabric 1 of the present invention is not limited to the polyester fiber 2, the flame retardant polyester fiber 2 ′, and the crimped fiber 2 ″ described later, and an aramid fiber as long as flame retardance is obtained as a whole fabric. Synthetic fibers such as polyamide (nylon) fibers such as polyethylene (PE), polypropylene (PP), polyolefin fibers such as polyethylene (PE), polyacrylonitrile (PAN) fibers, polyvinyl chloride (PVC) fibers, fluorine fibers, and rayon fibers Even if it contains semi-synthetic fibers such as cupra fibers and acetate fibers, and natural fibers such as cotton, wool, silk and hemp, there is no problem.
The polyester fiber 2 may be either a multifilament or a monofilament, and the total fineness thereof is not particularly limited. For example, the polyester fiber 2 is 1 dtex or more and 10,000 dtex or less, preferably 10 dtex or more and 1000 dtex or less, more preferably 20 dtex or more and 500 dtex or less. It may be.

<Flame retardant polyester fiber 2 '>
The flame-retardant polyester fiber 2 'in the present invention is a kind of fiber yarn, and the fiber yarn obtained by kneading the flame retardant 5 described later into the polyester fiber 2 or the polyester fiber 2 is manufactured. The flame retardant 5 was given by the fiber yarn which copolymerized the copolymerizable phosphorus compound (flame retardant 5) to the repeating unit which comprises the polyester fiber 2, or the post-processing (yarn post-processing) with respect to the polyester fiber 2. It is a fiber yarn.
Furthermore, the flame-retardant polyester fiber 2 'is JIS-L-1091: 1999 method E (oxygen index method test, strictly, any one of methods E-1, E-2, E-3) ), An oxygen index (referred to as a limiting oxygen index (LOI value)) at which the material can maintain flaming combustion at the last minute may be 26 or more.

The “oxygen index” in the present invention is, as defined in JIS-L-1091: 1999, “a numerical value of the minimum oxygen concentration represented by the volume percentage of oxygen necessary for the material to continue burning”. "Means.
In addition, the “limit oxygen index” in the present invention is, as defined in Annex 1 of JIS-L-1091: 1999, “under the specified test conditions, the oxygen that can maintain the flaming combustion at the limit. It means “minimum oxygen concentration (vol%) in a mixture of nitrogen”.

Such a flame retardant polyester fiber 2 'may be included in the antifouling fabric 1 of the present invention.
The flame retardant polyester fiber 2 ′ may be either a multifilament or a monofilament, and the total fineness thereof is not particularly limited as in the case of the polyester fiber 2, but for example, 1 dtex or more and 3000 dtex or less, preferably 10 dtex. It may be not less than 1000 dtex and more preferably not less than 20 dtex and not more than 500 dtex.
The fabric containing this flame retardant polyester fiber 2 'is referred to as a flame retardant fabric 3'.

<Crimped fiber 2 ”>
The crimped fiber 2 ″ in the present invention is a kind of fiber yarn, and is obtained by crimping the above-described polyester fiber 2 or other fiber yarn other than the polyester fiber 2. Also means.
Such a crimped fiber 2 ″ may be included in the antifouling fabric 1 of the present invention.

As the crimped fiber 2 ″, “Efcot (registered trademark)” manufactured by Teijin Frontier Co., Ltd. obtained by crimping a polyester fiber, or a woolen-processed fiber yarn (Woolen yarn) may be used.
The crimped fiber 2 ″ may be either a multifilament or a monofilament, and the total fineness thereof is not particularly limited as in the case of the polyester fiber 2 and the like, but for example, 1 dtex or more and 3000 dtex or less, preferably 10 dtex or more It may be 1000 dtex or less, more preferably 20 dtex or more and 500 dtex or less.
The fabric including the crimped fiber 2 ″ is referred to as a crimped fabric 3 ″.

<Colloidal silica 4>
The colloidal silica 4 in the present invention is a colloid of silicon dioxide (SiO ₂ ) or a colloid of silicon dioxide hydrate, and includes a fabric 3 including a polyester fiber 2 and a flame retardant polyester fiber 2 ′. Applied to a flame retardant fabric 3 ′ and a crimped fabric 3 ″ including crimped fibers 2 ″.

The average particle size of the colloidal silica 4 is 1 nm to 100 nm, preferably 1 nm to 50 nm, more preferably 3 nm to 30 nm, and still more preferably 5 nm to 15 nm.
The “average particle size” in the present invention refers to an average particle size based on the specific surface area measured by the BET method (a multipoint method or a method according to a single point method defined in JIS-Z-8830: 2013). .

The colloidal silica 4 may be obtained by dialysis after dilute hydrochloric acid is allowed to act on silicate, and the method for producing the colloidal silica 4 is not particularly limited.
Hereinafter, a colloidal solution in which ultrafine particles of silicic acid anhydride (anhydrous silicon dioxide) are dispersed in water using water as a dispersion medium is used as the colloidal silica 4.

The weight (in terms of solid content) of the colloidal silica 4 applied to the fabric 3, the flame retardant fabric 3 ′, and the crimped fabric 3 ″ is not particularly limited as long as both flame retardancy and antifouling properties are compatible. It is 0.01 g / m ² or more and 0.50 g / m ² or less, preferably 0.04 g / m ² or more and 0.16 g / m ² or less.
In addition, when the weight of the colloidal silica 4 to apply | coat is 0.01 g / m < ² > small, for example, it can be said that it is inferior in the antifouling effect, and when more than 0.50 g / m < ² >, improvement in antifouling property is carried out. It can be said that it can become a factor of deterioration of the texture and, conversely, flame retardance as well as reaching the peak.

<Flame retardant 5>
The flame retardant 5 in the present invention is used for a flame retardant polyester fiber 2 ′ having flame retardancy, or is added to a fabric 3 including the polyester fiber 2 or a crimped fabric 3 ″ including the crimped fiber 2 ″. The antifouling fabric 1 is imparted with flame retardancy by processing (post-fabric processing).
The flame retardant 5 is not particularly limited as long as it imparts flame retardancy to the antifouling fabric 1, but if it is an inorganic flame retardant, a metal compound such as aluminum hydroxide, magnesium hydroxide, antimony trioxide, etc. Inorganic acids such as phosphoric acid and boric acid, ammonium salts such as ammonium phosphate and ammonium carbonate, and alkali metal salts such as condensed sodium borate (borax) and sodium silicate may also be used.

Further, if the flame retardant 5 is a phosphorus-containing flame retardant, phosphorous-containing organic substances such as phosphoric acid esters, aromatic phosphoric acid esters, aromatic condensed phosphoric acid esters, and phosphonium salts, and water-soluble substances such as guanidine phosphate and carbamate polyphosphate. Aminoplast phosphate may be used.
Further, if the flame retardant 5 is a halogen-containing flame retardant, a halogen-containing polymer such as tetrabromophthalic acid-containing alkyd, tris (tribromoneopentyl) phosphate, tris (dichloropropyl) phosphate, tris (2,3 -Dibromopropyl) Isocyanurate, decabromodiphenyl ether, halogen-containing organic substances such as halogen-containing condensed phosphates, and the like may be used.
In addition, the flame retardant 5 may be a sulfur-containing flame retardant such as sulfur-containing or thiourea-based.

  These flame retardants 5 are kneaded at the time of polymerization or melt spinning of the polyester fiber 2 described above, or a copolymerizable phosphorus compound is added to the repeating unit constituting the polyester fiber 2 when the polyester fiber 2 is produced. By being copolymerized as 5 or applied by post-processing (post-processing of flame retardant yarn) on the polyester fiber 2, it becomes a flame retardant polyester fiber 2 'having flame retardancy.

<Anti-fouling evaluation>
The antifouling property in the present invention was evaluated by the following antifouling test according to JIS-L-1919: 2012 method A-2 (method using a sealed resin bag).
In this antifouling test, about 1 g of artificial contaminants for testing are put into a bag with a chuck of about 24 × 34 cm (for example, a bag made of polyethylene or the like).
Next, a test piece (antifouling fabric 1) cut to 4 cm × 4 cm is put, air is filled into the bag, the chuck is closed, and the mixture is shaken for 20 seconds.
Then, remove the specimen from the bag and flip it five times while holding the four corners.

Prior to the antifouling test described above, the L ^* value of the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface of the test piece (antifouling fabric 1) was measured. This measured value is L0.
In addition, after the above-described antifouling test, L ^* a ^* b ^* defined in JIS-Z-8781-4: 2013 on the surface of the test piece (antifouling fabric 1) that was flipped five times while changing the four corners ^. The L ^* value of the color system is measured, and this measured value is defined as L1.
Incidentally, JIS-Z-8781-4: Measurement of 2013 as defined in L ^* a ^* b ^* L ^* value based on the color system, using a Gretag Macbeth (GretagMacbeth) Co. "Supekutororino (Spectrolino)", Measurement was performed 5 times while changing the location of the test piece, and the average value of 3 times excluding the maximum and minimum was used as the measurement result.

Using the measured L0 and L1, the antifouling property evaluation value H is calculated by the following equation (1).

Antifouling evaluation value H = | L0−L1 | / L0 (1)

In the evaluation of antifouling property, the antifouling property was judged to be good when the antifouling property value H was 0.48 or less, and the antifouling property was judged to be poor when it exceeded 0.48.
The antifouling property evaluation value H is preferably 0.45 or less, and more preferably 0.40 or less.
In addition, the artificial pollutant for this antifouling test uses the artificial pollutant prescribed by JIS-Z-8901: 2006 ("Japan Powder Industrial Technology Association" 17 kinds of powder for JIS test "). It was. In addition, you may use the artificial pollutant prescribed | regulated by Table 2 of A-2 method of JIS-L-1919: 2012.

<L ^* value>
Dirt such as darkening is conspicuous when the fabric 3, the flame-retardant fabric 3 ′, and the crimped fabric 3 ″ are white or light-colored, so that a great effect by imparting antifouling properties can be realized.
From this viewpoint, for example, the fabric 3 in the present invention preferably has an L ^* value (lightness) of 70 or more, more preferably 80 or more, and still more preferably 90 or more.

<Flame retardance evaluation>
The evaluation of flame retardancy in the present invention was carried out with respect to the test piece (antifouling fabric 1) by JIS-L-1091: 1999 Method A-1 (45 ° micro burner method) and JIS-L-1091: 1999. The following flame retardant test was conducted in accordance with Method D (flame contact test).
In the A-1 method, both after 1 minute heating and after 3 seconds of flame, the combustion area is 30 cm ² or less, the afterflame time is 3 seconds or less, and the afterflame time + residual time is 5 seconds or less. At the same time, in the method D, the case where the number of times of flame contact was 3 times or more was determined to be acceptable.
In the method A-1, when any one of the combustion area, after flame time, after flame time + residual time exceeds the above acceptable line, or when the number of flame contact is 2 times or less in the method D It was rejected.

In addition, the evaluation of flame retardancy in the present invention is carried out according to the basis weight of the test piece (antifouling fabric 1) according to JIS-L-1091: 1999 method A-1 (45 ° micro burner method) and JIS- In the following flame retardant test according to JIS-L-1091: 1999 method D (flame-contacting test) at the same time as performing either A-10 method (45 ° Meckel burner method) of L-1091: 1999 Do.
In the A-2 method, both after 2 minutes of heating and after 6 seconds of flaming, the combustion area is 40 cm ² or less, the after flame time is 5 seconds or less, and the after flame time + residual time is 20 seconds or less. At the same time, in the method D, the case where the number of times of flame contact was 3 times or more was determined to be acceptable.
Also in method A-2, when any one of the combustion area, afterflame time, afterflame time + residual time exceeds the above acceptable line, or when the number of flame contact is less than 2 in method D Was rejected.

  In addition, in the A-1 method and the A-2 method, the test piece (antifouling fabric 1) is treated with a washing method according to JIS-L-1091: 1999 and then evaluated for flame retardancy. As a washing method in this case, the test piece (antifouling fabric 1) was washed with water and washed 5 times as shown below.

Washing with water was performed under the following conditions.
In washing (washing), the temperature is 60 ± 2 ° C. and the time is 15 minutes. The bath ratio (ratio between the weight of the test piece and the amount of water) is 1:40. The laundry detergent used at this time is the first type weak alkaline detergent specified in JIS-K-3371: 1994, and the amount used is 1 g / L (liter)).
For rinsing, the temperature is 40 ± 2 ° C., the time is 5 minutes, and this rinsing is repeated three times.
Dehydration is performed by centrifugal dehydration for a period of 2 minutes.
Drying is performed by hot air drying and the temperature is set to 60 ± 5 ° C.
The above washing / washing (rinsing), rinsing, dehydration, and drying are performed as one cycle, and a total of 5 cycles are performed.

Dry cleaning was performed under the following conditions.
In the dry cleaning, the temperature is 30 ° C. ± 2 ° C. and the time is 15 minutes. The ratio between the weight of the test piece and the amount of water is 12.6 ml of tetrachloroethylene (perchloroethylene) as an organic solvent per 1 g of the test piece. At this time, the charge soap (1 g of nonionic activator, 1 g of anion activator, and 0.1 ml of water) is 0.265 g per 1 g of the test piece.
The dry cleaning described above is one cycle, and a total of five cycles are performed.

In addition, as a washing method, in addition to the above-described conditions, the method defined in JIS-L-1091: 1999 may be used as it is.
Further, in a product that does not require this washing method, this treatment (washing) can be omitted.

<Evaluation of pollen catchability>
Evaluation of pollen catchability in the present invention was performed by the pollen catch test described below.
In this pollen catch test, about 0.5 g of pseudo-pollen for testing (Ishimatsuko dyed in pink by Hoshino Co., Ltd.) is put into a bag with a chuck of about 24 × 34 cm (for example, a bag made of polyethylene or the like).
Next, a test piece (antifouling fabric 1) cut to 4 cm × 4 cm is put, air is filled into the bag, the chuck is closed, and the mixture is shaken for 20 seconds.
After that, remove the test piece from the bag and shake it gently to drop the artificial pollen.

Prior to the pollen catch test described above, L ^* a ^* b ^* color system L ^* value as defined in JIS-Z-8781-4: 2013 on the surface of the test piece (antifouling fabric 1), a ^* Value, b ^* value is measured.
In addition, after the pollen catch test described above, L ^* a ^* b ^* as defined in JIS-Z-8781-4: 2013 on the surface of the test piece (antifouling fabric 1) on which pseudo pollen was shaken lightly ^. The L ^* value, a ^* value, and b ^* value of the color system are measured.
And before and after the pollen catch test, L ^* a ^* b ^* color system L ^* value, a ^* value, b as defined in JIS-Z-8781-4: 2013 on the surface of the antifouling fabric ^* Color difference ΔE ^* ab is calculated from the difference in values (ΔL ^* , Δa ^* , Δb ^* ).
Incidentally, JIS-Z-8781-4: 2013 to defined the L ^* a ^* b ^* L ^* value based on the color system, a ^* value, the measurement of the b ^* value, as in the antifouling test, GretagMacbeth Using “Spectrolino” manufactured by (GretagMacbeth), measurement was performed 5 times while changing the location of the test piece, and the average value of 3 times excluding the maximum and minimum was used as the measurement result.

The pollen catch test was evaluated as follows.
In the pollen catch test, since the pseudo pollen is colored, the more the test piece (antifouling fabric 1) catches the pseudo pollen, the greater the color difference ΔE ^* ab, which is preferable.
Therefore, this color difference ΔE ^* ab is used as a value for evaluating pollen catchability ^{. When} the color difference ΔE ^* ab is 12.00 or more, it is judged that the pollen catchability is good, and when it is less than 12.00, the pollen catchability is Judged to be bad.
The color difference ΔE ^* ab is preferably 16.00 or more, and more preferably 20.00 or more.

<Tests 1-3>
From here, first, Examples 1 to 8 and Comparative Examples 1 to 5 of the antifouling fabric 1 according to the present invention will be mentioned.
Tests 1 to 3 described later are performed using Examples 1 to 8 and Comparative Examples 1 to 5.

<Example 1>
The fabric in Example 1 is a flame retardant fabric (knitted fabric) 3 ′ including a flame retardant polyester fiber 2 ′. First, the flame retardant fabric 3 ′ will be described below.
This flame retardant fabric 3 'is a polyester fiber 2 (on the first side of a warp knitting machine (22 gauge, 3.2 mm between hooks) of 3 sheets (1st, 2nd, 3rd). 56 dtex multifilament, semidal fiber yarn), polyester fiber 2 (83 dtex multifilament, bright fiber yarn) is passed through the second collar, and flame retardant polyester is passed through the third collar. Thread system fiber 2 ′ (83 dtex multifilament, full-dal fiber yarn) is passed through, and the knitting structure by the first wrinkle is 1-0 / 0-1 / ..., and the knitting structure by the second wrinkle is 0-0 / This is a warp knitted fabric (warp knitted fabric) knitted as 3-3 /...
The warp knitted fabric was set (190 ° C. × 10 minutes) to obtain a flame-retardant fabric 3 ′ having a course density of 23 course / 25.4 mm and a wale density of 11 wale / 25.4 mm.
After immersing colloidal silica 4 (“Snowtex ST-AK” manufactured by Nissan Chemical Industries, Ltd.) in this flame retardant fabric 3 ′ in a padding tank adjusted to 0.4% sol and squeezing at a pickup rate of 134% By drying at 130 ° C. and heat-treating at 160 ° C., colloidal silica 4 was applied to obtain an antifouling fabric 1 of Example 1 having a basis weight of 106.2 g / m ² .

<Example 2>
In the antifouling fabric 1 of Example 1, the colloidal silica 4 was changed to “Snowtex ST-AK-L” manufactured by Nissan Chemical Industries, Ltd., and adjusted to 0.38% sol. A flameproof fabric 1 was obtained.

<Example 3>
In the antifouling fabric 1 of Example 1, the colloidal silica 4 is changed to “Snowtex ST-30” manufactured by Nissan Chemical Industries, Ltd. and adjusted to 0.25% sol, whereby the flameproofing of Example 3 The characteristic fabric 1 was obtained.

<Example 4>
In the antifouling fabric 1 of Example 1, the colloidal silica 4 is changed to “Snowtex ST-O” manufactured by Nissan Chemical Industries, Ltd. and adjusted to 0.38% sol, whereby the flameproofing of Example 4 is achieved. The characteristic fabric 1 was obtained.

<Example 5>
In the antifouling fabric 1 of Example 1, the colloidal silica 4 is changed to “Snowtex ST-N” manufactured by Nissan Chemical Industries, Ltd. and adjusted to 0.38% sol, whereby the flameproofing of Example 5 is achieved. The characteristic fabric 1 was obtained.

<Example 6>
In the antifouling fabric 1 of Example 1, the colloidal silica 4 is changed to “Snowtex ST-C” manufactured by Nissan Chemical Industries, Ltd. and adjusted to 0.38% sol, whereby the flameproofing of Example 6 is achieved. The characteristic fabric 1 was obtained.

<Example 7>
The fabric in Example 7 is a fabric (woven fabric) 3 containing polyester fibers 2, and this fabric 3 will be first described below.
In this fabric 3, the warp yarn is polyester fiber 2 (22 dtex monofilament fiber yarn), the weft yarn is polyester fiber 2 (67 dtex monofilament, bright fiber yarn), and another polyester fiber 2 ( 84 dtex multifilament, full dull polyester fiber yarn), which is a plain weave fabric woven by alternately driving.
Post-processing of the fabric using a dye and brominated flame retardant 5 ("Nonen R087-3" manufactured by Maruhishi Oil Chemical Co., Ltd.) with a high-pressure dyeing machine (fabric post-processing for simultaneous flameproofing of dyeing bath) , Washed, dried, and set (180 ° C. × 2 minutes) to obtain a fabric 3 having a warp density of 98.6 / 25.4 mm and a weft density of 84.3 / 25.4 mm .
After colloidal silica 4 (“Snowtex ST-AK” manufactured by Nissan Chemical Industries, Ltd.) was dipped in this fabric 3 in a padding tank adjusted to 0.4% sol and squeezed at a pickup rate of 136%, 130 ° C. Was dried and heat-treated at 160 ° C. to give colloidal silica 4 to obtain an antifouling fabric 1 of Example 7 having a basis weight of 40.9 g / m ² .
In Example 7, the binder resin for attaching the colloidal silica 4 to the fabric 3 is not used.

<Example 8>
The fabric in Example 8 is not only a kind of flame retardant fabric 3 ′ containing a flame retardant polyester fiber 2 ′ but also a kind of crimped fabric (knitted fabric) 3 ″ containing a crimped fiber 2 ″. The flame cloth 3 ′ and the crimped cloth 3 ″ (flame retardant crimped cloth 3 ⁺ ) will be first described below.
This flame-retardant crimped fabric 3 ⁺ is made of polyester fiber on the first side of a warp knitting machine (22 gauge, 3.2 mm between hooks) of 3 sheets (1st, 2nd, 3rd). 2 (56 dtex multifilament, semi-dal fiber yarn) is passed through, polyester fiber 2 (83 dtex multifilament, bright fiber yarn) is passed through the second kite, and polyester is fed into the third kite. Thread system fiber 2 (cotton count 30 single yarn, spun fiber yarn), the knitting structure by the first heel is 1-0 / 0-1 / ..., the knitting structure by the second heel is 0- 0 / 3-3 / ..., the knitting structure by the third heel is set as a vertical insertion structure of 0-0 / 0-0 / ..., and alternately arranged with the knitting structure (chain structure) of the first heel, As a weft insertion thread, crimped fiber 2 "(320 dtex multifilament, full-dal polyester fiber yarn) and This is a warp knitted fabric (warp knitted fabric) knitted by alternately inserting flame retardant polyester fibers 2 ′ (330 dtex multifilament fiber yarns).
The warp knitted fabric was set (190 ° C. × 10 minutes) to obtain a flame-retardant crimped fabric 3 ⁺ having a course density of 23 course / 25.4 mm and a wale density of 11 wale / 25.4 mm.
This flame-retardant crimped fabric 3 ⁺ is immersed in a padding tank adjusted to 0.4% sol with colloidal silica 4 (“Snowtex ST-AK” manufactured by Nissan Chemical Industries, Ltd.) and squeezed at a pickup rate of 121%. Then, drying at 130 ° C. and heat treatment at 160 ° C. gave the colloidal silica 4 to obtain an antifouling fabric 1 of Example 8 having a basis weight of 115.6 g / m ² .

<Comparative Example 1>
The flame-retardant fabric 3 ′ before the post-processing (post-soil-proofing post-processing) for applying the colloidal silica 4 in Example 1 was used as the fabric of Comparative Example 1.

<Comparative example 2>
In the fabric of Comparative Example 1, organosilicate (“BAYGARD AS” manufactured by Tanatex Chemicals Japan Co., Ltd.) was immersed in a padding tank adjusted to 0.7% sol and squeezed at a pickup rate of 134%, and then at 130 ° C. It was set as the fabric of the comparative example 2 which provided the organosilicate by drying and heat-processing at 160 degreeC.

<Comparative Example 3>
The% sol of the organosilicate prepared in the fabric of Comparative Example 2 was changed to 0.2% sol to obtain a fabric of Comparative Example 3 to which organosilicate was applied.

<Comparative example 4>
In the fabric of Example 7, the fabric 3 after applying the flame retardant 5 in the post-fabrication processing of flameproofing simultaneously with the dye bath and before applying the colloidal silica 4 in the post-processing of the antifouling fabric is referred to as Comparative Example 2. The organosilicate used in No. 3 was immersed in a padding tank adjusted to 0.7% sol, squeezed at a pickup rate of 136%, dried at 130 ° C., and heat treated at 160 ° C. to give an organosilicate. The fabric of Example 4 was obtained.

<Comparative Example 5>
The flame-retardant crimped fabric 3 ⁺ before the post-processing (post-soil-proofing post-processing) for applying the colloidal silica 4 in Example 8 was used as the fabric of Comparative Example 5.

<Test 1>
In Test 1, compared to Example 1 and Comparative Examples 1 to 3 described above, the combustion area and afterflame time after 3 minutes of heating and flaming 3 seconds in accordance with A-1 method of JIS-L-1091: 1999 After flame time + residual time, and the number of flame contact according to D method of JIS-L-1091: 1999.
At the same time, the L ^* value before and after the antifouling test in which it is put in a bag together with the artificial pollutant conforming to the A-2 method of JIS-L-1919: 2012, and the antifouling using these L ^* values The sex evaluation value H is also compared.

The results (before washing) of the items of antifouling property and flame retardancy in Example 1 and Comparative Examples 1 to 3 are shown in Table 1 below.
In Test 1, with respect to Example 1 and Comparative Example 2, antifouling properties were also obtained after washing with water 5 times (after washing with water) and after 5 times of dry cleaning (after dry cleaning). And each item of flame retardancy was evaluated.
The results after washing and washing in Example 1 and Comparative Example 2 are shown in Table 2 below, and the results after dry cleaning are shown in Table 3 below.

<Evaluation of Test 1>
Of Tables 1 to 3, first, Table 1 will be mentioned.
As shown in Table 1, Comparative Example 1 to which no antifouling agent was applied passed the flame retardancy, but the antifouling evaluation value H was 0.49, which is sufficient. Antifouling property cannot be secured.
This is because, as shown in the enlarged drawing substitute photograph of FIG. 5, many contaminants are attached to Comparative Example 1 after the antifouling test.
That is, in order to achieve both “antifouling properties” and “flame retardant properties”, it is necessary to add some antifouling agent.

Therefore, in Comparative Example 2 to which organosilicate was given as an antifouling agent, as shown in the enlarged drawing substitute photograph of FIG. 6, the amount of contaminants adhered was smaller than Comparative Example 1 to which no antifouling agent was given, The antifouling evaluation value H is 0.43, and the antifouling property can be ensured, but the combustion area, afterflame time, afterflame time + residue time are all ∞ (that is, the flame does not disappear), which is difficult Cannot ensure flammability at all.
This is because organo (organo) silicate is treated with, for example, an organic compound having a functional group that reacts with a silanol group on the surface of silica fine particles. It can also be said that it inhibits flame retardancy.

Based on this, in order to ensure the flame retardancy, Comparative Example 3 in which the amount of organosilicate to be applied was reduced, although the flame retardancy was indeed acceptable, the antifouling evaluation value H was 0.51. It is greatly reduced and this time it is not possible to ensure antifouling properties.
Therefore, when no antifouling agent is used or when an organosilicate as an antifouling agent is used, either “antifouling” or “flame retardant” cannot be secured, and “antifouling” “Flame resistance” cannot be achieved.

In Comparative Example 1 in which colloidal silica 4 was applied as an antifouling agent to Comparative Examples 1 to 3, Comparative Example 1 in which the antifouling agent was not applied as shown in the enlarged drawing substitute photograph of FIG. The adhesion amount of pollutants is smaller, and the antifouling property evaluation value H is 0.41, which ensures sufficient antifouling properties and at the same time, has passed the flame retardancy.
In other words, the antifouling fabric 1 of the present invention in which colloidal silica 4 is added to a flame retardant fabric (flame retardant fabric 3 ′) can achieve both “antifouling properties” and “flame retardant properties”. It becomes.

Next, reference is made to Tables 2 and 3.
Comparing the flame retardancy of Comparative Example 2 in Tables 2 and 3, it is acceptable after washing with water, but it is unacceptable after dry cleaning.
This is because the organosilicate having carbon was removed from the fabric surface by washing with water, and the flame retardancy of Comparative Example 2, which was rejected before washing, was replaced with a pass, but in dry cleaning using an organic solvent, the fabric surface Since the organosilicate was not removed, it can be said that it remained rejected as before washing.
That is, Tables 2 and 3 suggest that flame retardancy is inhibited when organosilicate is applied.

  On the other hand, for Example 1, as shown in Tables 2 and 3, the flame retardancy is acceptable after washing with water and after dry cleaning.

<Test 2>
In Test 2, for the above-described Examples 1 and 7 and Comparative Examples 2 and 4, the combustion area after 1 minute heating and 3 seconds after the flame was applied in accordance with the A-1 method of JIS-L-1091: 1999, the remaining Flame time, afterflame time + residue time, number of flame contact according to D method of JIS-L-1091: 1999, and artificial pollutant according to A-2 method of JIS-L-1919: 2012 The L ^* value before and after the antifouling test, which is put in a bag and mixed, is compared with the antifouling evaluation value H using these L ^* values.
At the same time, the method for applying the flame retardant 5 is also compared.
The results (before washing) of the items of antifouling property and flame retardancy in Examples 1 and 7 and Comparative Examples 2 and 4 are shown in Table 4 below.

<Evaluation of Test 2>
As shown in Table 4, in Comparative Examples 2 and 4 to which organosilicate was applied as an antifouling agent, the antifouling property can be ensured, but the application method of the flame retardant 5 is based on the flame retardant polyester fiber 2 ′. Even if it is the comparative example 2 or the comparative example 4 by post-processing, a flame retardance becomes disqualified and sufficient flame retardance is not acquired.
However, in Examples 1 and 7 to which colloidal silica 4 was applied as an antifouling agent, both Examples 1 and 7 were flame retardant regardless of the method of applying the flame retardant 5 as well as ensuring the antifouling property. Since it is a pass, sufficient flame retardance can be secured.

That is, the antifouling fabric 1 of the present invention in which the colloidal silica 4 is added to the flame retardant fabric regardless of whether the flame retardant fabric 3 ′ or the post-processing flame retardant 5 is applied. In this case, both “antifouling” and “flame retardant” can be achieved.
In addition, also in the antifouling cloth 1 of the present invention, the example 7 in which the flame retardant 5 is applied by post-processing is more antifouling than the example 1 in which the flame retardant 5 is applied by the flame retardant polyester fiber 2 ′. It can be said that the nature is high.

<Test 3>
In Test 3, compared to Examples 1 and 8 and Comparative Example 5 described above, the combustion area and afterflame time after 3 minutes of heating and flaming 3 seconds according to the A-1 method of JIS-L-1091: 1999 Residual flame time + residual dust time, number of flame contact according to D method of JIS-L-1091: 1999, and artificial contaminants according to A-2 method of JIS-L-1919: 2012 The L ^* value before and after the antifouling test to be put and mixed is compared with the antifouling evaluation value H using these L ^* values.
At the same time, the color difference ΔE ^* ab before and after the pollen catch test in which the artificial pollen is put in a bag and mixed is also compared.
The results (before washing) of the items of antifouling property, flame retardancy, and pollen catching property in Examples 1 and 8 and Comparative Example 5 are shown in Table 5 below.

<Evaluation of Test 3>
As shown in Table 5, Comparative Example 5 containing crimped fiber 2 ″ but not having an antifouling agent had a color difference ΔE ^* ab indicating pollen catching property of 24.26. Although the flame retardancy has passed, the antifouling evaluation value H is 0.49, and sufficient antifouling properties cannot be ensured.
That is, in order to achieve both “antifouling properties” and “pollen catching properties” and “flame retardant properties”, it is necessary to apply some antifouling agent.

On the other hand, although the color difference ΔE ^* ab in Example 1 used in Tests 1 and 2 is 11.71, Example 8 contains crimped fiber 2 ″ and is provided with colloidal silica 4 as an antifouling agent. Then, not only the antifouling property and flame retardancy are ensured, but also the color difference ΔE ^* ab is greatly improved to 24.32, and a sufficient pollen catching property is also ensured.
That is, if the antifouling fabric 1 of the present invention includes the crimped fiber 2 ″ and the colloidal silica 4 is added to the flame retardant fabric, the “antifouling” and the “flame retardant” are obtained. In addition, "pollen catching" can be realized simultaneously.

<Summary of Examples 1-8 and Comparative Examples 1-5>
For Examples 1 to 8 and Comparative Examples 1 to 5 described so far, antifouling agent, amount of antifouling agent used, antifouling property evaluation value H, antifouling property evaluation, flame retardant application method, flame retardant pass / fail, Table 6 below summarizes the presence / absence of crimped fibers 2 ″, color difference ΔE ^* ab, pollen catchability evaluation, and fabric used.

  Further, details of the colloidal silica 4 used in Examples 1 to 8 are shown in Table 7 below.

<PH, charge, particle diameter, antifouling property in colloidal silica 4>
As shown in Table 7, if the concentration of silicon dioxide (SiO ₂ ) in the colloidal solution is set to be substantially the same, the pH is acidic or alkaline, the charge is positive or negative, and the particle size is not limited. At the same time, the antifouling evaluation value H is less than 0.48, and at the same time, the flame retardancy has passed.
That is, it can be said that by providing the colloidal silica 4 irrespective of pH, electric charge, and particle diameter, both “antifouling property” and “flame resistance” can be achieved.

In addition, although the particle diameter of colloidal silica shows favorable antifouling property when the particle diameter is 10 nm or more and 50 nm or less, the type having a particle diameter of 10 nm or more and 15 nm or less shows a more preferable antifouling property when the tendency is described. Even so, it can be said that the pH is more acidic and the charge is more positive.

Further, as shown in Table 7, the colloidal silica 4 has a particle diameter (average particle diameter) of 10 nm to 50 nm or the above-mentioned 1 nm to 100 nm, and the like, which is a contaminant that causes dirt such as darkening. And the size is almost the same nano order.
Accordingly, the colloidal silica 4 can be fitted in the recesses on the surface of the polyester fiber 2, the flame-retardant polyester fiber 2 ′, and the crimped fiber 2 ″ in advance of the pollutant. It is thought that antifouling property is expressed by preventing fitting or entering inside the polyester fiber 2 or the like.
Colloidal silica 4 has a larger particle diameter by reducing the contact area by forming a convex shape by adhering to the surface of polyester fiber 2, flame retardant polyester fiber 2 ′, and crimped fiber 2 ″. It is also considered that antifouling properties are expressed against dirt and micro-order pollen.

<Colloidal silica 4 and pollen catchability>
Furthermore, the particle diameter (average particle diameter) of the colloidal silica 4 described above is much smaller than the average particle diameter (25 μm or more and 100 μm or less) of normal pollen.
Therefore, normal pollen does not fit into the dents on the surface of the polyester fiber 2 or the like, and conversely, the pollen catchability is inhibited by the convex shape of the colloidal silica 4 on the surface of the polyester fiber 2 or the like. Although it can be said that the crimped fiber 2 ″ in the present invention has a crimped structure, it is considered that it contributes effectively to physically catching (catching) pollen.
As a result, the antifouling fabric 1 according to the present invention, which is caught by the structure of the fiber yarn, has a problem of catching not only pollen but also pollutants by the sticky substance applied to the fiber, as in the past, and conventional antifouling processing Although it becomes difficult to catch dirt by carrying out, pollen becomes difficult to catch, and the problem that the pollen catching ability is lowered does not occur. At first glance, it is possible to achieve both contradictory “antifouling” and “pollen catching”.

<Binder resin>
As described above, in Example 7 in which the flame retardant 5 was applied in the post-processing, the binder resin for attaching the colloidal silica 4 to the fabric 3 was not used.
Thus, when there is no resin component (binder resin) for attaching the colloidal silica 4 or the flame retardant 5 to the polyester fiber 2 or the like, the original performance of the colloidal silica 4 may be impaired due to the adhesiveness of the binder resin, It becomes difficult to cause inhibition of flame retardancy.
Moreover, it is preferable from the point which improves antifouling property not to leave chemical | medical agents, such as a flame retardant, as much as possible on the surface of fiber yarns, such as the polyester-type fiber 2. FIG.

<Others>
In addition, this invention is not limited to embodiment mentioned above. Each configuration of the antifouling fabric 1 and the curtain 30 or the overall structure, shape, dimensions, and the like can be appropriately changed in accordance with the spirit of the present invention.
The antifouling fabric 1 is not limited to a woven or knitted fabric, but may be a non-woven fabric or the like as long as it includes polyester fibers, flame retardant polyester fibers, or crimped fibers and is provided with colloidal silica 4.
In addition, in the application of the colloidal silica 4 and the flame retardant 5, a binder resin may be used as long as the antifouling property, flame retardancy, and pollen catching property are not hindered.

The antifouling fabric of the present invention is not only used for curtains, particularly laces and voiles (thin fabrics) with high L ^* values (lightness), roll screen fabrics, roman shade curtain fabrics, etc. It may be used for any fiber product such as ground or woven wall covering.

DESCRIPTION OF SYMBOLS 1 Antifouling fabric 2 Polyester fiber 2 'Flame retardant polyester fiber 2 "Crimped fiber 3 Fabric 3' Flame retardant fabric 3" Crimped fabric 4 Colloidal silica 5 Flame retardant 30 Curtain H Antifouling evaluation value L0 Antifouling JIS-Z-8781-4 of the surface of the antifouling fabric before the test:
L ^* a ^* b ^* L ^* value of the color system defined in 2013 L1 JIS-Z-8781-4 of the surface of the antifouling fabric after the antifouling test:
L ^* a ^* b ^* color system L ^* value specified in 2013

Claims (10)

  An antifouling fabric characterized in that colloidal silica is imparted to a flame retardant fabric comprising a flame retardant polyester fiber having flame retardancy. Colloidal silica and a flame retardant are given to the cloth containing the polyester fiber,
An antifouling fabric, wherein the flame retardant is applied by post-processing.   The antifouling fabric according to claim 1 or 2, comprising crimped crimped fibers.   An antifouling fabric characterized in that colloidal silica is added to a crimped fabric containing crimped crimped fibers. When performing the pollen catch test in which the antifouling fabric according to any one of claims 1 to 4 is put in a bag together with pseudo pollen and mixed, the antifouling fabric before and after the pollen catch test An antifouling fabric characterized in that the color difference ΔE ^* ab in the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface is 12.00 or more. When a pollen catch test is conducted in which a cloth containing polyester fiber and colloidal silica is added to a cloth together with pseudo pollen and mixed, the pollen catch test is performed before and after the pollen catch test. An antifouling fabric characterized in that the color difference ΔE ^* ab in the L ^* a ^* b ^* color system defined by JIS-Z-8781-4: 2013 on the surface is 12.00 or more.   The anti-stain fabric according to any one of claims 1 to 6, wherein the colloidal silica is applied without using a binder resin. JIS-L-1091: Heating for 1 minute according to method A-1 of 1999 and after 3 seconds of flaming all have a combustion area of 30 cm ² or less, afterflame time of 3 seconds or less, and afterflame time + Residual time is 5 seconds or less, or both after 2 minutes heating according to A-2 method of JIS-L-1091: 1999 and after 6 seconds of flame, the combustion area is 40 cm ² or less, and The after flame time is 5 seconds or less and the after flame time + residual time is 20 seconds or less,
The antifouling fabric according to any one of claims 1 to 7, wherein the number of flame contacts according to JIS-L-1091: 1999 method D is 3 or more. An antifouling test was conducted in which the antifouling fabric according to any one of claims 1 to 8 was put in a bag together with artificial contaminants and mixed according to the method A-2 of JIS-L-1919: 2012. In this case, an antifouling cloth having an antifouling evaluation value H calculated by the following formula (1) is 0.48 or less.

Antifouling evaluation value H = | L0−L1 | / L0 (1)

(In Formula (1), L0 is L ^* a ^* b ^* L ^{* of the} color system defined by JIS-Z-8781-4: 2013 of the surface of the antifouling fabric before the antifouling test) L1 is an L ^* value of the L ^* a ^* b ^* color system defined in JIS-Z-8781-4: 2013 on the surface of the antifouling fabric after the antifouling test. .)   A curtain using the antifouling fabric according to any one of claims 1 to 9.