TW201800629A - Cloth tape and fiber product - Google Patents

Abstract

The problem addressed by the present invention is to provide a cloth tape and fiber product having flame resistance. The solution is a cloth tape formed from organic fiber and has an afterflame time of 2.0 seconds or less in combustibility measurements as provided for in JIS L1091-1999 Method A-4 (12 second heating method).

Description

Cloth tape and fiber products

The present invention relates to a cloth tape which can be used as a constituent member of a fiber product and has flame retardancy, and a fiber product formed using the cloth tape.

Conventionally, for example, Patent Document 1 and the like have proposed a cloth tape that can be used as a constituent member of a fiber product.

On the other hand, flame retardant properties are required in the fields of protective clothing, fire protection clothing, fire service clothing, rescue clothing, flame-resistant overalls, police uniforms, self-defense force clothing, military uniforms, and the like.

Prior art literature Patent literature

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-249959

This invention was made in view of the said background, and an object of this invention is to provide the cloth tape which can be used as a structural member of a fibrous product and has flame retardancy, and a fiber product formed using the same.

In order to achieve the above-mentioned subject, the present inventors devoted themselves to the review. As a result, it was found that the cloth tape was obtained by using flame-resistant fibers, and the cloth tape having flame resistance was obtained. The review was completed with more intensive efforts and finally completed the present invention.

As described above, according to the present invention, there is provided "a cloth tape, which is a cloth tape made of organic fibers, and is characterized in that in the flammability measurement prescribed by JIS L1091-1999 A-4 method (12-second heating method), Afterflame time is 2.0 seconds or less. "

At that time, in the flammability measurement prescribed by the JIS L1091-1999 A-4 method, it was preferred that the embers time be 3.0 seconds or less and the carbonization length be 10 cm or less. The width of the cloth tape is preferably within a range of 1 to 30 cm. The cloth tape is preferably made of a knitted fabric. The cloth tape preferably contains a wholly aromatic polyamide fiber. The cloth tape preferably contains meta-type wholly aromatic polyamide fibers having a cloth tape weight ratio of 30% by weight or more. In addition, the cloth tape preferably contains meta-type wholly aromatic polyamide fibers having a cloth tape weight ratio of 50 to 99% by weight. In addition, the cloth tape preferably includes a para-type wholly aromatic polyamide fiber having a cloth tape weight ratio of 2 to 20% by weight. The cloth tape is preferably dyed.

In the cloth tape of the present invention, the cloth tape preferably includes a bent portion. At that time, it is preferred that the direction of the curved portion is consistent with the length direction or width direction of the tape. The width of the curved portion is preferably within a range of 0.3 to 20 cm. In addition, the aforementioned curved portion is preferably provided with Has an expansion ratio of more than 10%. In addition, it is preferable that the curved portion has a curvature ratio of 1.1 or more as defined by the following formula.

Bending rate = [B + (A × 2 × (Number of bends))] / B

A: Thickness of the bend (cm)

B: Width of the bend (cm)

In the cloth tape of the present invention, the cloth tape preferably has a mesh portion. At that time, in the aforementioned mesh portion, the aperture ratio is preferably 20% or more.

The mesh portion is preferably continuous in a length direction of the cloth tape with a width of 1 to 5 cm. In addition, on both sides of the continuous mesh portion in the longitudinal direction, it is preferable to have a non-mesh portion having an aperture ratio of 10% or less. Further, it is preferable to have a cloth covering at least a part of the mesh portion. Moreover, such a cloth is preferably openable and closable freely.

According to the present invention, there is provided a fiber product, which is any one selected from the group consisting of protective clothing, fire protection clothing, fire protection clothing, rescue clothing, work clothes, police uniforms, self-defense force clothing, and military uniforms including the aforementioned cloth tape .

According to the present invention, a cloth tape and a fiber product having flame retardancy which can be used as a constituent member of a fiber product are obtained.

1‧‧‧ Mesh

2‧‧‧ flap section

3‧‧‧ Non-mesh

FIG. 1 is an example of a perspective view of a cloth tape of the present invention. Cloth tape tied in Continuous in the longitudinal direction (L direction).

Fig. 2 is an example of a knitting structure diagram which can be used in manufacturing the cloth tape of the present invention.

Fig. 3 is an example of a perspective view of a cloth tape of the present invention. The cloth tape is continuous in the length direction.

Hereinafter, embodiments of the present invention will be described in detail. In the present invention, it is important that in the flammability measurement specified in the JIS L1091-1999 A-4 method (12-second heating method), the afterflame time is 2.0 seconds or less (preferably 0.001 to 1.0 seconds). If the afterflame time exceeds 2.0 seconds, sufficient flame retardance is not maintained, and there is danger of catching fire and the like when exposed to flames.

In particular, in the flammability measurement prescribed by JIS L1091-1999 A-4 method (12-second heating method), it is preferable that the embers time is 3.0 seconds or less and the carbonization length is 10 cm or less.

In order to obtain such flame retardancy, it is preferable to use a flame retarder as at least a part of the fabric of the main fabric of the tape. It is also possible to apply flame retardant processing to the cloth tape.

Examples of the flame-retardant material include meta-type wholly aromatic polyamide fibers, para-type wholly aromatic polyamine fibers, flame-resistant fluorene fibers, modified acrylic fibers, flame-resistant acrylic fibers, and flame-resistant vinylon fibers. The fibers and the like are not particularly limited. In addition, the material system is not particularly limited when a flame retardant process is applied.

Here, the cloth tape preferably contains at least a wholly aromatic polyfluorene. Amine fiber. Moreover, it is preferable that the cloth tape includes a meta-type wholly aromatic polyamide fiber having a cloth tape weight ratio of 30% by weight or more (more preferably 50 to 99% by weight). If the weight ratio of the meta-type wholly aromatic polyamide fiber is less than the weight of the cloth tape compared to 30% by weight, sufficient flame retardancy cannot be obtained, and the cloth tape may be brittle when carbonized when exposed to flame.

In addition, the cloth tape is preferably a para-type wholly aromatic polyamide fiber containing a cloth tape with a weight ratio of 2 to 20% by weight. If the weight ratio of the para-type wholly aromatic polyamide fiber is less than the weight of the cloth tape compared to 2% by weight, there is a possibility that the shrinkage when exposed to flame may increase. On the contrary, if it exceeds 20% by weight, the cloth tape may be hardened and wearability may be reduced.

Here, the cloth tape is preferably composed of only meta-type wholly aromatic polyamide fibers and / or para-type fully aromatic polyamide fibers. In particular, the cloth tape is preferably composed of only a textile yarn blended with meta-type wholly aromatic polyamide fibers and para-type fully aromatic polyamide fibers.

The meta-type wholly aromatic polyamidamine fiber is a fiber composed of a polymer of m-phenylene-m-xylylenediamine in which 85 mol% or more of the repeating unit is used. Such a meta-type wholly aromatic polyamine may be a copolymer containing a third component in a range of up to 15 mol%.

Such meta-type wholly aromatic polyamines can be produced by a conventional interfacial polymerization method. As the degree of polymerization of the polymer, it is preferable to use N-methyl-2- at a concentration of 0.5 g / 100 ml. The intrinsic viscosity (IV) measured in the pyrrolidone solution is in the range of 1.3 to 1.9 dl / g.

The meta-type wholly aromatic polyamidoamine may further include an onium alkylbenzenesulfonate. Hexyl is preferably exemplified as the onium alkylbenzenesulfonate Tetrabutylphosphonium besylate, tributylbenzylphosphonium hexylbenzenesulfonate, tetraphenylphosphonium dodecylbenzenesulfonate, tributyltetradecylphosphonium dodecylbenzenesulfonate, twelve Compounds such as tetrabutylphosphonium sulfonate, tributylbenzyl ammonium dodecylbenzenesulfonate, and the like. Among them, tetrabutylphosphonium dodecylbenzenesulfonate or tributylbenzylammonium dodecylbenzenesulfonate is easy to obtain, and the thermal stability is also good, and in N-methyl-2-pyrrolidone The solubility is also high and can be exemplified particularly well.

The content ratio of the above-mentioned alkylbenzenesulfonate is preferably 2.5 mol% or more (more preferably 3.0 ~ 7.0 mole%).

As a method for mixing poly-m-phenylene-m-xylylenediamine and an onium alkylbenzenesulfonate, a poly-m-phenylene-m-xylylenediamine is mixed and dissolved in a solvent, and an alkyl group is mixed therein. As the method of dissolving the onium besylate in a solvent, any of them can be used. The dope thus obtained can be formed into fibers by a conventional method.

The polymer used in meta-type wholly aromatic polyamide fibers is for the purpose of improving dyeing resistance, discoloration resistance and discoloration resistance, and the like, and may contain aromatic polyamides having a repeating structural unit represented by the following formula (1). In the skeleton, an aromatic diamine component or an aromatic dicarboxylic acid halide component that is different from the main constituent unit of the repeating structure is taken as the third component, and the total amount of the repeating structural unit with respect to the aromatic polyamine is 1 to 1 10mol% copolymerization.

-(NH-Ar1-NH-CO-Ar1-CO)-. ． ． Formula 1)

Here, Ar1 has a binding group other than the metacoordination or parallel axis direction. Divalent aromatic group.

It may also be copolymerized as the third component. Specific examples of the aromatic diamines represented by formulae (2) and (3) include p-phenylenediamine, chlorophenylenediamine, methylphenylenediamine, ethylfluorenyldiamine, and amino groups. Anisidine, benzidine, bis (aminophenyl) ether, bis (aminophenyl) fluorene, diaminobenzidineaniline, diaminoazobenzene, and the like. Specific examples of the aromatic dicarboxylic acid dichloride represented by the formulae (4) and (5) include terephthalic acid chloride, 1,4-naphthalene dicarboxylic acid chloride, and 2,6 -Naphthalene dicarboxylic acid chloride, 4,4'-biphenyl dicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, bis (chlorocarbonylphenyl) ) Ether and so on.

H ₂ N-Ar2-NH ₂ . ． ． Equation (2)

H ₂ N-Ar2-Y-Ar2-NH ₂ . ． ． Equation (3)

XOC-Ar3-COX. ． ． Equation (4)

XOC-Ar3-Y-Ar3-COX. ． ． Equation (5)

Here, Ar2 is a divalent aromatic group different from Ar1, Ar3 is a divalent aromatic group different from Ar1, and Y is at least one atom selected from the group consisting of an oxygen atom, a sulfur atom, and an alkylene group. Or a functional group, X represents a halogen atom.

In addition, the dye has good absorbency, and it is easy to adjust to the target color with less dye or even with weak dyeing conditions. The crystallinity of meta-type wholly aromatic polyamide fiber is preferably 5 to 35. %. Furthermore, it is more preferable that the surface deviation of the dye is difficult to occur, the discoloration resistance and discoloration resistance are high, and the dimensional stability necessary for practical use is also ensured. 25%.

In addition, the meta-type wholly aromatic polyamide is not harmful to the excellent flame retardancy of the meta-type wholly aromatic polyamide fiber, and the surface deviation of the dye is difficult to occur, and the discoloration and discoloration resistance is also high. The residual solvent amount of the fiber is preferably 0.1% by weight or less.

The meta-type wholly aromatic polyamide fiber system can be produced by the following method. By the following method, the degree of crystallization and the amount of residual solvent can be made into the above range.

The polymerization method of the meta-type wholly aromatic polyamine polymer is not particularly limited. For example, Japanese Patent Publication No. 35-14399, US Patent No. 3360595, and Japanese Patent Publication No. 47-10863 can be used. The solution polymerization method and the interfacial polymerization method described in.

The spinning solution is not particularly limited, and a fluorene-based solvent solution containing an aromatic copolymer fluorene polymer obtained by the above-mentioned solution polymerization or interfacial polymerization may be used, or the polymer may be isolated from the polymerization solution. Those who dissolve this in an amidine-based solvent.

Examples of the amidine-based solvent used herein include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone (NMP), and dimethyl Liya et al., Particularly preferred is N, N-dimethylacetamide.

The copolymerized aromatic polyamidamine polymer solution obtained as described above is stabilized by further containing an alkali metal salt or an alkaline earth metal salt, and can be used at a higher concentration and at a lower temperature. The alkali metal salt and alkaline earth metal salt are preferably 1% by weight or less (more preferably 0.1% by weight or less) with respect to the total weight of the polymer solution.

In the spinning and coagulation step, the spinning solution (meta-type wholly aromatic polyamine polymer solution) obtained above is spun out in the coagulation solution to solidify it.

The spinning device is not particularly limited, and a conventional wet spinning device can be used. In addition, as long as the wet spinning can be performed stably, the number of spinning holes, the arrangement state, and the hole shape of the spinning nozzle are not particularly limited. For example, the number of holes can be 1,000 to 30,000, and the spinning hole diameter can be used. Porous spinning nozzles for chemical fiber staple fibers of 0.05 to 0.2 mm.

The temperature of the dope (meta-type wholly aromatic polyamine polymer solution) when spinning out from the spinning nozzle is preferably in the range of 20 to 90 ° C.

As a coagulation bath for obtaining fibers, an ammonium-based solvent that does not substantially contain an inorganic salt (preferably an aqueous solution of NMP having a concentration of 45 to 60% by mass) is used in a temperature range of 10 to 50 ° C. When the concentration of the amidoamine-based solvent (preferably NMP) is less than 45% by mass, the structure becomes thicker, the washing efficiency in the washing step is reduced, and it may become difficult to reduce the amount of residual solvent in the fiber . On the other hand, when the concentration of the amine-based solvent (preferably NMP) exceeds 60% by mass, uniform coagulation cannot be performed up to the inside of the fiber, so there is a possibility that it is difficult to reduce the amount of residual solvent in the fiber. The immersion time of the fibers in the coagulation bath is preferably in the range of 0.1 to 30 seconds.

Next, in a plastic stretching bath having a concentration of 45 to 60% by mass of an aqueous solution of a fluorene-based solvent (preferably NMP) and a temperature of the bath in the range of 10 to 50 ° C, the stretching is performed at a stretching ratio of 3 to 4 times. extend. After stretching, water with a NMP concentration of 10 to 30 ° C and 20 to 40% by mass is passed. The solution was then thoroughly washed in a warm water bath at 50 to 70 ° C.

The washed fiber is subjected to a dry heat treatment at a temperature of 270 to 290 ° C, and a meta-type wholly aromatic polyamide fiber that satisfies the above-mentioned crystallinity and the amount of the residual solvent can be obtained.

In the aforementioned meta-type wholly aromatic polyamide fiber, the fiber system may be a long fiber (multifilament) or a short fiber. In particular, in terms of blending with other fibers, short fibers having a fiber length of 25 to 200 mm are preferred. The single fiber fineness is preferably in the range of 1 to 5 dtex.

Examples of commercially available meta-type wholly aromatic polyamide fibers include Conex (trade name), Conexneo (trade name), Nomex (trade name), and the like.

In addition, para-type wholly aromatic polyamide fibers are represented by Technora (trade name), Kevlar (trade name), and Twaron (trade name), and are made of polyamide having an aromatic ring in the main chain. The fiber can be polyparaphenylene terephthalamide (PPTA) or a copolymerized para-paraphenylene-3,4'-oxydi-p-phenylene terephthalamide Amine (PPODPA).

In the cloth tape of the present invention, the first aspect has a curved portion. The term “curved portion” as used in the present invention means that as shown in FIG. 1, ribs on the front surface and ribs on the back surface are alternately formed in a cross section of the cloth tape (that is, wave-shaped). The cloth tape has stretchability because it has such a bent portion.

In the cloth tape of the present invention, the width W1 of the cloth tape is preferably within a range of 1 to 30 cm (more preferably 2 to 10 cm). If the width W1 is smaller than 1 cm, there is a possibility that sufficient stretchability may not be obtained. Conversely, if the If the width W1 is larger than 30 cm, the handleability of the cloth tape may be reduced.

Moreover, it is preferable that the progress direction (wave progress direction) of such a curved part is coincident with the longitudinal direction or width direction of a cloth tape. Note that in FIG. 1, the direction of progress of the bent portion coincides with the width direction (W direction) of the cloth tape.

The width W2 of the bent portion is preferably in a range of 0.3 to 20 cm (more preferably 1 to 8 cm). If the width W2 is smaller than 0.3 cm, sufficient stretchability may not be obtained. Conversely, if the width W2 is larger than 20 cm, the operability of the cloth tape may be reduced.

The thickness of the bent portion is preferably within a range of 1 to 10 mm.

In addition, in terms of obtaining excellent stretchability, the bending rate defined by the following formula in the bent portion is preferably 1.1 or more (more preferably 1.3 to 10).

(Bending rate) = (B + (A × 2 × (number of bends))) / B

A: Thickness of the bend (cm)

B: Width (cm) of the bent portion.

The bent portion preferably has an expansion ratio of 10% or more (more preferably 25% or more, particularly preferably 50 to 300%). If this stretch ratio is smaller than 10%, there is a possibility that wearing comfort may be reduced.

The cloth structure of such a cloth tape is not limited, but it is preferably made of a fabric and / or a knitted fabric. Particularly preferred is a knitted fabric. Among these, warp-knitted fabrics are preferred.

As a method for manufacturing such a cloth tape, for example, It is manufactured by the method described in Japanese Patent Application Laid-Open No. 2010-285721, paragraph 0029 and the like. That is, for example, the needles on the front side of a double raschel knitting machine can be knitted at a specified interval in the weft direction to form a warp knitting portion with a predetermined width (front side main knitting portion). Similarly, in the zonal direction, warp-knitted knitting portions (back side main knitting portions) of a predetermined width are knitted at a specified interval, and the phase of the side back knitting portions is relative to the phase of the front side main knitting portions. Displacement in the zonal direction is made in such a way that each of the back-side main knitting portions is located at the middle position between the front-side main knitting portions. ) The side edges of the front-side main knitting portion and the back-side main knitting portion are close to each other, and on both sides of the knitted fabric, the same knitting structure as the connecting knitting portion is knitted into respective ear portions.

Among such adhesive tapes, dyers are preferred. Because it can be dyed, colorless cloth can be prepared, and it can be dyed and shipped according to use or requirements. In addition, by dyeing, when it is made into a fiber product, the color can be matched with the fabric of other parts.

Furthermore, flame retardants, water absorbers, water repellents, heat storage agents, ultraviolet shielding agents, electrification inhibitors, antibacterial agents, deodorants, insect repellents, mosquito repellents, light storage agents, Various other processing such as returning reflector.

Since such a cloth tape has the above-mentioned structure, it is not only incombustible but also stretchable.

The first aspect of the fiber product is selected from the group consisting of protective clothing, fire protection clothing, and fire protection activities by using the aforementioned cloth tape in part. Textile products of any one of the groups consisting of military uniforms, rescue uniforms, flame-resistant overalls, police uniforms, self-defense force clothing and military uniforms.

The cloth tape may be partially disposed on a joint portion of a shoulder, an elbow, a knee, or the like. At that time, the fibers constituting a place other than the cloth tape are preferably meta-type wholly aromatic polyamide fibers and / or para-type fully aromatic polyamide fibers.

Since such a fiber product uses the aforementioned cloth tape, it has excellent characteristics not only of flame retardancy but also of stretchability.

In the cloth tape of the present invention, the second aspect has a mesh portion. In such a mesh part, the aperture ratio defined by the following formula is preferably 20% or more (more preferably 30% to 60%). Here, if the aperture ratio is less than 20%, sufficient air permeability cannot be obtained, which may impede comfort.

Opening rate = (C / D) × 100 (%)

However, C is the total area of the void portion surrounded by the fiber portion when the cloth is projected, and D is the value obtained by totaling the area of the void portion and the area of the fiber portion.

Here, the aforementioned mesh portion is preferably continuous in the length direction of the cloth tape with a width of 1 to 5 cm. If the width is smaller than 1 cm, there is a possibility that the air permeability is reduced. Conversely, if the width is larger than 5 cm, there is a possibility that a flame passes through the mesh portion.

In addition, if non-mesh portions (low ventilation portions) are provided on both sides of the continuous mesh portions in the longitudinal direction, the structure of the cloth tape is stable and preferable. At that time, the aperture ratio of the non-mesh portion is preferably 10% or less. If the opening ratio of the non-mesh portion is greater than 10%, there is Instability such as line offset.

If the cloth tape has a double structure and has a cloth (flap portion) covering the mesh portion, it is preferable that the flame does not easily pass through the mesh portion. At that time, as the cloth covering the mesh portion, it is preferred that the aperture ratio is less than 20% (non-mesh). The cloth system is not particularly limited to fabrics, knitted fabrics, and the like, but warp knitting is preferred, and the mesh portion and non-mesh portion of the cloth tape are integrally formed.

Here, in order to obtain excellent flame retardancy, as the main cloth of the cloth tape (the cloth having a mesh portion) and the cloth covering the mesh portion, a flame-resistant material as described above may be used, or a flame-retardant material may be applied. machining.

Such a cloth tape is preferably composed of a fabric and / or a knitted fabric. The fabric or the knitted fabric may be constituted separately, or may be connected by sewing the fabric and the knitted fabric with a sewing thread. In the case of a woven fabric, a plain weave, a twill weave, a satin weave, etc. are preferable, and it is not specifically limited. In the case of knitted fabrics, circular knitting (weft knitting), warp knitting, and the like are not particularly limited, but the structure of the warp knitting cloth tape is more stable. The width of the cloth tape is preferably 1 to 30 cm (more preferably 2 to 10 cm).

As a method for producing such a cloth tape, for example, as described in Japanese Patent Application Laid-Open No. 2002-249959, a double Raschel knitting machine can be used.

Among such adhesive tapes, dyers are preferred. Because it can be dyed, colorless cloth can be prepared, and it can be dyed and shipped according to use or requirements. In addition, by dyeing, when it is made into a fiber product, the color can be matched with the fabric of other parts.

Furthermore, flame retardants, water absorbers, water repellents, heat storage agents, ultraviolet shielding agents, electrification inhibitors, antibacterial agents, deodorants, insect repellents, mosquito repellents, light storage agents, Various other processing such as returning reflector.

The fiber product of the present invention is a group selected from the group consisting of protective clothing, fire protection clothing, fire protection clothing, rescue clothing, fire-resistant overalls, police uniforms, self-defense force clothing, and military uniforms by using the aforementioned cloth tape in part. Fiber products of any one.

At that time, when a cloth covering the opening portion is provided, it is preferable that the cloth becomes the outside air side. In addition, the cloth tape can be used not only on the entire surface of the fabric, but also on a part that easily sweats, such as an underarm part, and a part that is hard to drop in body temperature. At that time, the fibers constituting places other than the cloth tape are preferably meta-type wholly aromatic polyamide fibers and / or para-type fully aromatic polyamide fibers.

The second aspect of the fiber product uses the aforementioned fabric to have high air permeability and excellent characteristics of flame retardancy.

Examples

Next, examples and comparative examples of the present invention will be described in detail, but the present invention is not limited thereto.

(1) Flammability

Sewing a fabric made of the same textile yarns as those woven into a tape, stitched with 100% meta-type wholly aromatic polyamide fibers. It was made on both ends of the cloth tape to have a predetermined width, and the flammability measurement prescribed by JIS L1091-1999 A-4 method (12-second heating method) was performed.

(2) Expansion rate

A plurality of cloth tapes are sewn and connected with a sewing thread made of 100% of meta-type wholly aromatic polyamide fibers in a direction orthogonal to the longitudinal direction of the tape. L1096 8.16 Method B to determine the expansion and contraction.

(3) Bending rate

Bending rate = [B + (A × 2 × (Number of bends))] / B

A: Thickness of the bend (cm)

B: Width of the bend (cm)

(4) Opening rate

It is calculated by the following formula.

Opening rate = (C / D) × 100 (%)

However, C is the total area of the void portion surrounded by the fiber portion when the cloth is projected, and D is the value obtained by totaling the area of the void portion and the area of the fiber portion.

[Example 1]

Use only meta-type wholly aromatic polyamide fibers (Conex (trade name) MA), para-type fully aromatic polyamide fibers (Twaron (trade name) PA) Each of the short fibers (all with a fiber length of 51mm) made of 40 yarns / twisted yarns blended with a mass ratio of MA / PA = 95/5, shown in Figure 2 by a double Raschel machine Braided tissue to weave warp-knitted fabric. Then, it was refined by a common method, and after the meta-type wholly aromatic polyamide fiber was dyed, it was fixed and heat-set with a needle while being stretched so that the width of the bent portion became 1.3 times, and a cloth tape having a bending rate of 1.45 was obtained. The width is 4 cm, and the thickness of the bent portion is 3 mm. In addition, as shown in FIG. 1, the direction of progress of the bent portion coincides with the width direction of the cloth tape.

The obtained cloth tape had an expansion and contraction rate of 121%, an afterflame time of 0.1 seconds, an embers time of 1.2 seconds, a carbonized length of 6.0cm, and was flame-resistant.

Next, the cloth tape was used on the shoulder portion of the fiber product, and the other portions were made of meta-type wholly aromatic polyamide fibers (Conex (trade name)) MA, para-type using conventional methods. Fully aromatic polyamide fiber (Twaron (brand name)) PA Each short fiber (all fiber length is 51mm) is made of 40 spun yarns blended with a mass ratio of MA / PA = 95/5 The fabric of the strands becomes a fiber product (protective clothing). When the tester wears the fiber product, he / she has good stretchability and is very comfortable.

[Comparative Example 1]

The same procedure as in Example 1 was carried out except that the textile yarn was changed to 40 counts / twisted yarns made of polyester fiber only in Example 1.

Although the obtained cloth tape had a bending rate of 1.58 and an expansion and contraction rate of 132%, the flammability provided by the JIS L1091-1999 A-4 method (12-second heating method) was complete combustion, and it was not a flame retardant. The cloth tape was used on the shoulder of the fiber product, and the other parts were made of meta-type wholly aromatic polyamide fiber (Conex (trade name)) MA and para-type using conventional methods. Fully aromatic polyamide fiber (Twaron (brand name)) PA Each short fiber (all fiber length is 51mm) is made of 40 spun yarns blended with a mass ratio of MA / PA = 95/5 The fabric of the strands becomes a fiber product (protective clothing).

When the tester wears the fiber product, it has good stretchability.

[Example 2]

It carried out similarly to Example 1 except having extended the width of a bending part to 2.6 times and heat setting, and set the bending rate to 1.03.

Although the obtained cloth tape had an expansion ratio of 23% and insufficient stretchability, the afterflame time was 0.2 seconds, the afterglow time was 1.1 seconds, and the carbonized length was 5.3 cm, which had flame retardancy.

Next, the cloth tape was used on the shoulder portion of the fiber product (protective clothing), and the other parts were made of meta-type wholly aromatic polyamide fiber (Conex (trade name)) MA, which was produced by a common method. , Para-type wholly aromatic polyamide fiber (Twaron (brand name)) PA each short fiber (all fiber length is 51mm) made of MA / PA = 95/5 quality blended textile yarn 40 Count / double-stranded fabric to become a fiber product (protective suit).

When the tester wore the fiber product, the extensibility of the shoulder portion was lower than that obtained in Example 1.

[Example 3]

Each short fiber made of meta-type wholly aromatic polyamide fiber (Conex (trade name) MA) and para-type fully aromatic polyamide fiber (Twaron (trade name) PA) was used (the fiber length was 51 mm) The resulting 40 yarns / twisted yarn blended with a mass ratio of MA / PA = 95/5 was knitted into a warp knitted fabric by a double Raschel machine and knitted into a cloth tape as shown in FIG. 3. At that time, the mesh portion (35% opening ratio), the non-mesh portion (7% opening ratio), and the flap portion (7% opening ratio) were integrally molded.

Then, it is refined by a common method, and the meta-type wholly aromatic polyamide fiber is dyed by a dyeing process, and then heat-set.

The obtained cloth tape was flammable in accordance with JIS L1091-1999 A-4 method (12-second heating method), the afterflame was 0.7 seconds, the embers were 0.9 seconds, and the carbonized length was 4.8 cm, which had flame retardancy. The cloth tape was used on the underarm part of the fiber product, and the other parts were made of meta-type wholly aromatic polyamide fiber (Conex (trade name) MA), The number of spun yarns blended with each short fiber (all fiber length 51 mm) of the full-aromatic polyamide fiber (Twaron (trade name) PA) of the type is MA / PA = 95/5. The double-stranded fabric becomes a fiber product (protective clothing).

Ventilation of the underarms when the tester wore the fiber product Good sex and very comfortable.

[Comparative Example 2]

The procedure was carried out in the same manner as in Example 3, except that 40 counts / twisted yarns of woven yarn made of only polyester fibers were used.

The obtained cloth tape had a flammability defined by the JIS L1091-1999 A-4 method (12-second heating method) as being completely flammable, and not a flame retardant. The cloth tape was used on the underarm part of the fiber product, and the other parts were made of meta-type wholly aromatic polyamide fiber (Conex (trade name) MA), The number of spun yarns blended with each short fiber (all fiber length 51 mm) of the full-aromatic polyamide fiber (Twaron (trade name) PA) of the type is MA / PA = 95/5. The double-stranded fabric becomes a fiber product (protective clothing).

When the tester wore the fiber product, the air permeability of the underarm portion was good.

[Example 4]

In Example 3, the mesh portion (opening ratio: 10%), the mesh portion (opening ratio: 5%), the flap fabric (opening ratio: 5%), and the respective opening ratio were changed. The other steps were performed in the same manner as in Example 3.

The obtained cloth tape was flammable according to JIS L1091-1999 A-4 method (12-second heating method). The afterflame time was 0.9 seconds, the embers time was 1.1 seconds, and the carbonization length was 5.3cm. In addition, the cloth tape is used in the underarm part of the fiber product, and the other parts are usually used. See the method for each short fiber made of meta-type wholly aromatic polyamide fiber (Conex (trade name) MA) and para-type fully aromatic polyamide fiber (Twaron (trade name) PA). The fiber length is 51mm), and the fabric of 40 counts / twisted yarns blended with a mass ratio of MA / PA = 95/5 is formed into a fiber product (protective clothing).

When the tester wore the fiber product, the air permeability of the underarm portion was lower than that obtained in Example 3.

Industrial availability

According to the present invention, it is possible to provide a cloth tape and a fiber product having flame retardancy, and the industrial value thereof is extremely great.

Claims (21)

A cloth tape, which is a cloth tape made of organic fibers, is characterized in that in the flammability measurement specified in JIS L1091-1999 A-4 method (12-second heating method), the afterflame time is 2.0 seconds or less. For example, the cloth tape of claim 1, in the flammability measurement specified in JIS L1091-1999 A-4 method, the embers time is 3.0 seconds or less and the carbonized length is 10 cm or less. For example, the cloth tape of item 1 or 2 has a width of 1 ~ 30cm. The cloth tape according to any one of claims 1 to 3, wherein the cloth tape is composed of a woven fabric. The cloth tape according to any one of claims 1 to 4, wherein the cloth tape comprises a wholly aromatic polyamide fiber. For example, the cloth tape according to any one of claims 1 to 5, wherein the cloth tape comprises a meta-type wholly aromatic polyamide fiber having a cloth tape weight ratio of 30% by weight or more. For example, the cloth tape of any one of claims 1 to 6, wherein the cloth tape comprises a meta-type wholly aromatic polyamide fiber having a cloth tape weight ratio of 50 to 99% by weight. For example, the cloth tape according to any one of claims 1 to 7, wherein the cloth tape comprises a para-type wholly aromatic polyamide fiber with a cloth tape weight ratio of 2 to 20% by weight. For example, the cloth tape of any one of claims 1 to 8, wherein the cloth tape is dyed. The cloth tape of any one of claims 1 to 9, wherein the cloth tape includes a bent portion. For example, the cloth tape of claim 10, wherein the direction of the aforementioned curved portion is consistent with the length direction or width direction of the cloth tape. For example, the fabric tape of claim 10 or 11, wherein the width of the aforementioned bent portion is within a range of 0.3 to 20 cm. The cloth tape according to any one of claims 10 to 12, wherein the bent portion has an expansion ratio of 10% or more. The cloth tape according to any one of claims 10 to 13, wherein the bending portion is a bending rate of 1.1 or more as specified by the following formula; bending rate = [B + (A × 2 × (number of bending))] / BA: Thickness (cm) of the bent portion B: Width (cm) of the bent portion. The cloth tape according to any one of claims 1 to 9, wherein the cloth tape has a mesh portion. The cloth tape of claim 15, wherein the opening ratio in the aforementioned mesh portion is 20% or more. If the item 15 or 16 of the cloth tape is requested, the aforementioned mesh portion is continuous in the length direction of the cloth tape with a width of 1 to 5 cm. The cloth tape according to any one of claims 15 to 17, wherein both sides of the continuous mesh portion in the longitudinal direction have a non-mesh portion having an opening ratio of 10% or less. The cloth tape according to any one of claims 15 to 18, which has a cloth covering at least a part of the mesh portion. The cloth tape of claim 19, wherein the cloth is openable and closable freely. A fiber product comprising the cloth tape according to any one of claims 1 to 20 selected from the group consisting of protective clothing, fire protection clothing, fire-fighting clothing, rescue clothing, work clothes, police uniforms, self-defense force clothing, and military uniforms Anyone in the group.