JP7234472B2 - curtain fabric - Google Patents

Description

TECHNICAL FIELD The present invention relates to a woven or knitted fabric for curtains which is excellent in flame resistance, water repellency and aesthetics.

Curtains are made of fabrics that are made by selecting various materials and functions according to the application and purpose. One of the required functions is water repellency, and the water repellency is mainly achieved by resins that have the effect of lowering the surface tension, such as fluorine-based resins and silicon resins. However, these fluorine-based resins and silicone resins lose their water-repellent effect over time, and it is difficult to provide the fire-retardant performance required by law for applications such as hotel shower curtains. The existence of the resin impairs the flameproof performance due to the candle phenomenon with the fiber as the core, making it difficult to achieve both water repellency and flameproof property at the same time.

In some cases, vinyl chloride film is used to simultaneously achieve water repellency and flame resistance, but this has major restrictions on colors and patterns, and greatly sacrifices the aesthetics of curtains. It has become.

For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2013-155459), in order to achieve water repellency and flame resistance (flame retardancy) at the same time, 50% by weight or more of polyester fiber containing a non-halogen flame retardant is used. A fabric curtain is disclosed which is constructed of a woven fabric and to which a wax-based water repellent is applied. However, when a wax-based water repellent is attached, the fabric tends to harden, and the durability of the water repellency is poor, such as poor resistance to washing. unsuitable.

JP 2013-155459 A

The present invention has been made to solve the above-described problems, that is, by using a core-sheath type composite fiber containing a phosphorus component, a polypropylene sheath component, and a polyester core component, a durable fiber can be obtained. To obtain a woven or knitted fabric which has flame retardancy and water repellency at the same time, can express aesthetics with disperse dyes, and can be suitably used for curtains and the like.

That is, the present invention provides the following preferred aspects.
[1] A woven or knitted fabric containing a core-sheath type composite fiber having a core component of polyester and a sheath component of polypropylene, wherein at least the core component of the core-sheath type composite fiber contains a phosphorus component, and the core-sheath type composite A woven or knitted fabric, characterized in that the content of the phosphorus component contained in the fiber is 5000 to 20000 ppm with respect to the weight of the entire fiber, and the core-sheath type composite fiber comprises 95% by weight or more of the entire woven or knitted fabric.
[2] The above-mentioned [1], wherein the core-sheath type composite fiber contains a phosphorus component only in the core component, and the content of the phosphorus component is 8000 to 25000 ppm based on the weight of the core component. Woven and knitted fabrics.
[3] The woven or knitted fabric according to [1] or [2], wherein the weight ratio of the core component to the sheath component in the core-sheath type composite fiber is 5/5 to 9/1. .
[4] The woven or knitted fabric according to any one of the above [1] to [3], further comprising a flameproofing agent of a type that collects dust in the fibers.
[5] A curtain at least partly made of the woven or knitted fabric according to any one of [1] to [4].

According to the present invention, it is possible to obtain a woven or knitted fabric excellent in fire resistance, water repellency and aesthetics, which can be suitably used for curtains and the like.

1 is a schematic cross-sectional view showing a concentric core-sheath type composite fiber according to an embodiment of the present invention; FIG. 1 is a schematic cross-sectional view showing an eccentric core-sheath type composite fiber according to an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view showing a multicore core-sheath type composite fiber according to an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view showing a deformed sheath-core-sheath type composite fiber according to an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view showing a core-core-sheath type conjugated fiber having uneven alternating polygons according to an embodiment of the present invention. FIG.

The present invention will be described in detail below. The polyester and polypropylene referred to in the present invention conform to the terms and definitions of JIS L0204-2.

It is important that the core-sheath type conjugate fibers constituting the woven or knitted fabric of the present invention contain a phosphorus component from the viewpoint of flame resistance. The phosphorus component may be kneaded as an additive, may be used as a monomer and may be part of the polymer composition as a copolymer, or may be included in both. Also, the phosphorus component may be contained only in the core component, or may be contained in both the core component and the sheath component. From the viewpoint of flame resistance, it is preferably contained in both the core component and the sheath component, and from the viewpoints of spinnability and ease of handling, it is preferably contained only in the core component.

When the phosphorus component is kneaded as an additive, for example, red phosphorus, phosphoric acid ester, organic phosphonic acid, and organic phosphinic acid can be mentioned, and from the viewpoint of whiteness and stability over time, organic phosphonic acid organic phosphinic acid systems are preferred.

When the phosphorus component is used as a monomer and is part of the composition of the polymer as a copolymer, for example, organic phosphonic acids and organic phosphinic acids are exemplified, and organic phosphinic acids are preferred from the viewpoint of reaction controllability.

It is important that the content of the phosphorus component is 5,000 to 20,000 ppm with respect to the total weight of the core-sheath type composite fiber. If it is less than the above lower limit, even if a flame retardant is added in the dyeing process, it is not suitable because sufficient flame resistance cannot be obtained. is. The content of the phosphorus component is preferably 8000-18000 ppm, more preferably 10000-15000 ppm.

When only the core component contains the phosphorus component, the content of the phosphorus component is preferably 8000 to 25000 ppm based on the weight of the core component. If it is less than the above lower limit, sufficient flame retardancy may not be obtained even if a flame retardant is added in the dyeing process, and if it is larger than the above upper limit, sufficient spinnability may not be obtained. There is The content of the phosphorus component in the core component is more preferably 10000-23000 ppm, more preferably 12000-20000 ppm.

In the core-sheath type conjugate fiber constituting the woven or knitted fabric of the present invention, it is important that the sheath component is polypropylene. Since polypropylene itself has a water-repellent function, fabrics with water-repellency can be obtained by using fibers whose entire surfaces are covered with polypropylene. In addition, disperse dyes and flame retardants can pass through at high water temperatures. Therefore, it is important that the sheath component of the core-sheath type conjugate fiber is polypropylene.

Moreover, in the core-sheath type conjugate fiber constituting the woven or knitted fabric of the present invention, it is important that the core component is a polyester such as polyethylene terephthalate. Polyester can be dyed with disperse dyes, and the dyeing process can retain the flame retardant inside the fibers. Therefore, it is important that the core component of the core-sheath type composite fiber is polyester in order to make the fabric rich in aesthetics and to improve flameproof performance.

In the core-sheath type conjugate fiber constituting the woven or knitted fabric of the present invention, the ratio of the core component to the sheath component is not particularly limited, but the core/sheath weight ratio is preferably 5/5 to 9/1. If the ratio of the core component is higher than the above upper limit, spinnability may become difficult. Flame resistance may decrease due to the high proportion of polypropylene in The core/sheath weight ratio is more preferably 6/4 to 9/1, more preferably 6/4 to 8/2.

The cross-sectional shape of the core-sheath type conjugate fiber constituting the woven or knitted fabric of the present invention may be selected as long as the core is completely covered with the sheath, and the shape can be freely selected as long as it satisfies this condition. For example, the core portion and the sheath portion are usually concentric with each other as shown in FIG. 1, but they may be eccentric as shown in FIG. Moreover, as shown in FIG. 3, there may be a plurality of core portions. The number of cores is not particularly limited, but from the viewpoint of spinnability, the number of cores is preferably 12 or less, more preferably 4 or less. There are no particular restrictions on the shape of the core and sheath. For example, as shown in FIG. 4, the sheath has a triangular cross-section and the core has a circular cross-section, and as shown in FIG. be done. In particular, a cross-section with a large contact area between the core and the sheath, as shown in FIG. 5, is preferable in that separation between the core and the sheath is less likely to occur.

In the core-sheath type conjugate fiber constituting the woven or knitted fabric of the present invention, the total fineness and the number of filaments are not particularly limited. more preferred. The number of filaments is preferably 6 to 300 filaments, more preferably 12 to 150 filaments.

In the woven or knitted fabric of the present invention, it is important that the above-mentioned core-sheath type conjugate fiber accounts for 95% by weight or more of the woven or knitted fabric. In order to obtain flame resistance, the uniformity of the composition of the fabric is important, and it is preferable that the fabric is composed of the same fibers. If the proportion of the core-sheath type conjugate fiber is less than the above lower limit, sufficient flameproofness cannot be obtained even if a flameproofing agent is applied in the dyeing process. In addition, from the viewpoint of water repellency, it is preferable that the amount of the core-sheath type conjugate fiber occupying the entirety is large because water repellency cannot be obtained in the portion other than the core-sheath type conjugate fiber. The ratio of the core-sheath type conjugate fibers in the woven or knitted fabric is preferably 96% by weight or more, more preferably 100% by weight.

In the woven or knitted fabric of the present invention, the basis weight is not particularly limited, but is preferably 30 to 400 g/m ² for curtain applications. Since flameproof performance is more likely to be obtained as the basis weight is smaller, 30 to 300 g/m ² is more preferable, and 30 to 200 g/m ² is even more preferable.

If the flame retardancy is insufficient due to the amount of disperse dyes used, the basis weight of the fabric, etc., it is preferable to add a flame retardant during the dyeing process after fabric production. At that time, it is difficult to apply the flame retardant by the usual DIP-NIP method because the fabric has water repellency, so it is difficult to attach the amount of flame retardant and to fix the flame retardant. It is preferable to apply the agent by holding it in the polyester portion of the core component.

Examples of the flame retardant include halogen-based flame retardants, phosphorus-based flame retardants, and flame retardants containing both halogen and phosphorus. It is preferable to use at least one of these. .

The flame retardant is applied to a high-pressure dyeing machine or the like in an amount of 3 to 25% owf on the fabric to be treated, and the fabric is treated at a bath ratio of 1:5 to 1:20 and a treatment temperature of 100 to 135 ° C. It is preferable that the flameproof agent is sucked up and retained.

Although there is no particular limitation on the amount of the flame retardant used, it is usually preferred to use 3 to 25% owf. If the content is less than the above lower limit, the flame retardant effect may be small. On the other hand, if the above upper limit is exceeded, the amount of the flameproofing agent that is not absorbed by the polyester increases, and not only is the flameproofing agent wasted, but also stains caused by the flameproofing agent may adhere to the fabric.

Also, the bath ratio of the in-bath treatment is not particularly limited, but is usually 1:5 to 1:20. If it is less than the above lower limit, it is difficult to perform uniform processing, and if it is above the above upper limit, in-bath treatment may not be performed efficiently.

Furthermore, although the treatment temperature is not particularly limited, it is usually carried out at 100 to 135°C. If it is less than the above lower limit, the dust absorption of the flame retardant may not be sufficient and the effect may be small. may be the cause. When the in-bath treatment is performed at the same time as the dyeing, the temperature is preferably 120 to 135° C. for dust absorption and retention of disperse dyes.

The present invention will now be described with reference to Examples, which are not intended to limit the scope of the present invention.

The flameproof performance was evaluated by the burning area (unit: square centimeter) after 3 seconds of ignition according to JIS L1091 A-1 method. However, before the measurement, according to the washing method of JIS L0001 140 method, the one washed 10 times was used. In this example, 30 cm ² or less was rated as high flame resistance, over 30 cm ² and up to 45 cm ² as medium flame resistance, and over 45 cm ² as low flame resistance.

The water repellency was evaluated by the JIS L1092 water repellency test. However, before the measurement, according to the washing method of JIS L0001 140 method, the one washed 10 times was used.

Aesthetics were evaluated by dyeing the polyester part with a disperse dye to express color.

(Example 1)
A resin (phosphorus component concentration 15000 ppm), polypropylene (made of prime polymer (melt viscosity 62 Pa s (260 ° C.))) is used as the sheath component, and the core/sheath is melt-spun at a weight ratio of core/sheath = 8/2. A type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 1). The phosphorus component concentration in this composite fiber was 12000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. The flameproof performance of this fabric was 35 cm ² , indicating flameproof properties. Moreover, the water repellency was grade 4.

(Example 2)
The finished fabric produced in Example 1 was treated at 130° C. with a high-pressure dyeing machine using 2% owf of a common blue disperse dye and a liquor ratio of 1:8. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 30 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 3)
The fabric after the finish set processing produced in Example 1 was mixed with a general blue disperse dye 2%owf, a brominated flame retardant (manufactured by Marubishi Yuka Kogyo, trade name "UR7") 10%owf, and a bath ratio of 1 :8 in a high pressure dyeing machine at 130°C. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 10 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 4)
DIP the fabric after finishing set processing prepared in Example 1 in a 3% ows liquid of phosphorus flame retardant (manufactured by Marubishi Yuka Kogyo Co., Ltd., trade name "R031-5"), and NIP it between rollers to retain approximately 80% solution by weight to dough weight. It was then dried, cured, washed, dried and set. The flameproof performance of this fabric was 40 cm ² , indicating flameproof properties, but the effect of adding a flameproof agent by DIP-NIP was not observed. Moreover, the water repellency was grade 3.

(Example 5)
The finished fabric produced in Example 1 was treated at 130° C. with a high-pressure dyeing machine using 2% owf of a common blue disperse dye and a liquor ratio of 1:8. Then, the phosphorus-based flame retardant (manufactured by Marubishi Yuka Kogyo Co., Ltd., product name "R031-5") is dipped in a 3% ows liquid, and then NIPed between rollers to obtain a solution of about 80% by weight based on the weight of the fabric. was retained. It was then dried, cured, washed, dried and set. This fabric was colored and aesthetically pleasing, and had a flame retardant performance of 35 cm ² , demonstrating flame retardant properties. Moreover, the water repellency was grade 3.

(Example 6)
A resin (phosphorus component concentration 15000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 6/4 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 1). The phosphorus component concentration in this composite fiber was 9000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (manufactured by Marubishi Yuka Kogyo, trade name "UR7") 10% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine. °C. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 25 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 7)
A resin (phosphorus component concentration 15000 ppm), and as a sheath component polypropylene (made of prime polymer (melt viscosity of polymer before containing flame retardant: 62 Pa s (260 ° C))) flame retardant (DIC product name “EXR3000”) Using a resin containing 33% by weight of (phosphorus component concentration 15000 ppm), a core-sheath type composite fiber 84 dtex / 24 filament was produced by melt spinning at a weight ratio of core / sheath = 5/5 (cross-sectional shape: Fig. 1 ). The phosphorus component concentration in this composite fiber was 15000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (product name UR7 manufactured by Marubishi Yuka) 10% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine at 130 ° C. bottom. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 10 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 8)
A resin (phosphorus component concentration 15000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 8/2 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 5). The phosphorus component concentration in this composite fiber was 12000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. The flameproof performance of this fabric was 35 cm ² , indicating flameproof properties. Moreover, the water repellency was grade 4.

(Example 9)
A resin (phosphorus component concentration 15000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 8/2 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 5). The phosphorus component concentration in this composite fiber was 12000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. Then, it was treated at 130° C. with a high-pressure dyeing machine using 2% owf of a common blue disperse dye and a liquor ratio of 1:8. The flameproof performance of this fabric was 30 cm ² , indicating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 10)
A resin (phosphorus component concentration 15000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 8/2 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 5). The phosphorus component concentration in this composite fiber was 12000 ppm. After that, using only this thread at a density of 105 / 2.54 cm in the warp, this thread and a regular polyethylene terephthalate 84 dtex / 36 filament thread at a ratio of 9: 1 at a density of 95 / 2.54 cm in the weft A plain weave fabric was produced using the fabric, and after fabric scouring, drying and finish setting processing were performed (ratio of composite fiber used: 96% by weight). Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (manufactured by Marubishi Yuka Kogyo, trade name "UR7") 15% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine. °C. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 30 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 11)
A resin (phosphorus component concentration 10000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 6/4 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 1). The phosphorus component concentration in this composite fiber was 6000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (manufactured by Marubishi Yuka Kogyo, trade name "UR7") 10% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine. °C. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 30 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Example 12)
A resin (phosphorus component concentration of 20000 ppm), and polypropylene (made of prime polymer (melt viscosity of the polymer before containing the flame retardant: 62 Pa s (260 ° C))) as a sheath component and a flame retardant (manufactured by DIC, trade name “EXR3000”) )” (concentration of phosphorus component: 15,000 ppm) was used to prepare a core-sheath type composite fiber 84 dtex/24 filament by melt spinning at a weight ratio of core/sheath = 8/2 (cross-sectional shape: Figure 1). The phosphorus component concentration in this composite fiber was 19000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (product name UR7 manufactured by Marubishi Yuka) 10% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine at 130 ° C. bottom. This fabric was colored and had an aesthetic appearance, and had a flameproof performance of 10 cm ² , demonstrating high flameproof performance. Moreover, the water repellency was grade 4.

(Comparative example 1)
Polyethylene terephthalate (manufactured by Kuraray (polymer melt viscosity 130 Pa s (290 ° C))) is used as the core component, and polypropylene (prime polymer product (polymer melt viscosity 62 Pa s before containing flame retardant) is used as the sheath component. 260 ° C.))) and flame retardant (manufactured by DIC, trade name “EXR3000”)” using a resin (phosphorus concentration 15000 ppm) containing 33% by weight, melt spinning at a core / sheath = 8/2 weight ratio A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 1). The phosphorus component concentration in this composite fiber was 3000 ppm. Thereafter, using only this yarn, a plain weave fabric having a length of 105 threads/2.54 cm and a width of 95 threads/2.54 cm was produced. The flameproof performance of this fabric was 60 cm ² and was not flameproof. The water repellency was grade 4.

(Comparative example 2)
A resin (phosphorus component concentration of 25000 ppm), and polypropylene (made of prime polymer (melt viscosity of polymer before containing flame retardant: 62 Pa s (260 ° C))) as a sheath component, flame retardant (manufactured by DIC, trade name “EXR3000”) )” (concentration of phosphorus component: 25,000 ppm) was used to melt-spun a core/sheath = 5/5 weight ratio to prepare a core-sheath type composite fiber 84 dtex/24 filament ( Cross-sectional shape: Fig. 1). However, good spinning processability was not obtained.

(Comparative Example 3)
A resin (phosphorus component concentration 15000 ppm), using polypropylene (made of prime polymer (polymer melt viscosity 62 Pa s (260 ° C.))) as a sheath component, using melt spinning at a weight ratio of core / sheath = 8/2 A core-sheath type composite fiber 84 dtex/24 filament was produced (cross-sectional shape: FIG. 5). The phosphorus component concentration in this composite fiber was 12000 ppm. After that, using only this thread, the density is 105 threads / 2.54 cm in the vertical direction, and this thread and the regular polyethylene terephthalate 84 dtex / 36 filament thread are used in a ratio of 4: 1 to 95 threads / 2.54 cm in the horizontal direction. A plain weave fabric was produced using this fabric, and after fabric scouring, drying and finish setting processing were performed (ratio of composite fiber used: 92% by weight). Furthermore, this fabric is treated with a general blue disperse dye 2% owf, a brominated flame retardant (product name UR7 manufactured by Marubishi Yuka) 15% owf, and a bath ratio of 1:8 with a high-pressure dyeing machine at 130 ° C. bottom. This fabric was colored and had an aesthetic appearance, but had a flameproof performance of 50 cm ² and was not flameproof. Moreover, the water repellency was grade 3.

Since the composite fiber obtained in Comparative Example 1 contained a small amount of phosphorus, the fabric using the composite fiber could not be provided with sufficient flameproof performance. In Comparative Example 2, sufficient spinning processability could not be obtained because the polymer composition for fiber spinning contained a large amount of phosphorus. In the woven fabric of Comparative Example 3, the use ratio of the composite fiber containing the phosphorus component was low, so that sufficient flameproof performance could not be imparted.

The woven or knitted fabric of the present invention can be suitably used for shower curtains and the like used in lodging facilities such as hotels.

1: Core-sheath type composite fiber 2: Core component 3: Sheath component

Claims (5)

A woven or knitted fabric containing a core-sheath type conjugate fiber having a core component made of polyester and a sheath component made of polypropylene, wherein at least the core component of the core-sheath type conjugate fiber contains a phosphorus component, and the core-sheath type conjugate fiber contains a phosphorus component. A woven or knitted fabric, wherein the content of the phosphorus component contained in the woven or knitted fabric is 5000 to 20000 ppm based on the weight of the entire fiber, and the core-sheath type composite fiber contains 95% by weight or more of the entire woven or knitted fabric. The woven or knitted fabric according to claim 1, wherein the core-sheath type composite fiber contains a phosphorus component only in the core component, and the content of the phosphorus component is 8000 to 25000 ppm based on the weight of the core component. The woven or knitted fabric according to claim 1 or 2, characterized in that the weight ratio of the core component to the sheath component in the core-sheath type conjugate fiber is 5/5 to 9/1. The woven or knitted fabric according to any one of claims 1 to 3, further comprising a flame retardant of the type that is dust-absorbed into the fibers. A curtain at least partly made of the woven or knitted fabric according to any one of claims 1 to 4.

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