JPH06212534A - Pile fabric - Google Patents

Abstract

PURPOSE:To obtain pile fabric having excellent flame retardance and extremely slight stain of the color of ground fabric to pile yarn by using the pile yarn composed of flame-retardant polyester yarn and the ground fabric comprising spun-dyed thermally meltable yarn and polyester yarn containing at least phosphorus element. CONSTITUTION:Spun yarn comprising flame-retardant polyester yarn provided with a halogen atom such as bromine or phosphorus atom by copolymerization or a post-process is made into pile yarn. The pile yarn is woven in a ground fabric part comprising spun-dyed yarn A of thermally meltable yarn such as polyester and polyester yarn containing at least phosphorus element satisfying the correlation 3,000<=(Y-100.X)<=10,000 [X is blending ratio (%) of yarn A; Y is phosphorus element (ppm) contained in yarn B] to form pile fabric such as warp pile double woven fabric and the pile yarn is dyed in a given hue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame-retardant pile cloth suitable for use in chairs of vehicles and furniture, carpets, and the like. More specifically, it relates to a flame-retardant pile cloth used in railway vehicles. A pile fabric having the same.

[0002] Conventionally, with regard to a pile fabric having a high degree of flame retardancy used in railway vehicles and the like, a heat-melting type fiber is used for the pile part and a flame-retardant polyester fiber is used for the base fabric part, and phosphorus element and A flame-retardant pile woven or knitted fabric back-coated with a flame-retardant agent containing one or both of halogen elements (JP-A-59-5378).
No. 1) is proposed.

However, in the above-mentioned flame-retardant pile woven or knitted fabric, the pile portion is a mere heat-melting type fiber and does not have flame retardancy, so that the weight of the pile portion becomes large and the dye concentration becomes high, Further, when the pile portion is provided with functions such as water repellency and antifouling property, the melt drip property is remarkably lowered, and the flame retardance of the entire pile woven or knitted fabric is impaired. In addition, in the case of imparting a pattern to the surface of a pile yarn colored by a normal yarn dyeing or a reverse dyeing, which has been developed as a high-grade pile woven or knitting in recent years, by various printing processes,
Not only the flame retardancy is impaired for the above-mentioned reasons, but also the dye in the flame-retardant polyester fiber dyed in the base fabric part migrates to the pile part due to the thermal conditions of the coloring and fixing process in the printing process. Crying), the hue of the pile surface is changed, and not only a predetermined hue cannot be obtained, but also the friction fastness of the product is deteriorated, which is a drawback that it cannot be put to practical use.

[0004]

In a pile fabric having a high degree of flame retardancy used for railway vehicles and the like: a. The flame retardancy is remarkably impaired due to the weight of the pile portion, the concentration of dye, the addition of functionality such as water repellency, or the printing process on the colored pile surface. b. Due to the heat treatment in the printing process, the dye in the base fabric part bleaches and changes the hue of the pile yarn, making it unusable as a product. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the conventional pile cloth and to provide a pile cloth having high quality and high flame retardancy.

[0005]

Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventor has used a flame-retardant polyester fiber for the pile yarn, and has a base cloth portion which is a heat-melting fiber for primary coating. (A) and the polyester fiber (B) containing at least phosphorus element, and the mixture ratio [%] (X) of the fiber (A) and the phosphorus element [pp] contained in the fiber (B).
The inventors have found that this object can be achieved by using a pile fabric in which m] (Y) satisfies the following formula, and arrived at the present invention. 3000 ≦ (Y-100 · X) ≦ 10000, but 10 ≦ X ≦ 70

The present invention will be described in detail below. The highly flame-retardant pile fabric used for railway vehicles and the like in the present invention specifically means a material that passes the flammability standard of JR railway vehicle materials (Railway Supervision Bureau Notification No. 81 1956.5). Say. That is, the sample is tilted at 45 °, and the flammability of the sample is evaluated by a flame in which alcohol is burned from the center of the lower end. Like the flammability test (US Federal Standard MVSS302) applied to automobile materials, , Keep the sample horizontal, indirect flame with burner source smaller than the other end for 15 seconds, and if it is slow-burning (burning rate of 4 in / min or less), it is acceptable. Differently, the technical level in commercialization is also in another area. In the latter case,
Even if the flame-retarded fiber is not used, it is usually produced by combining ordinary fibers.

In the present invention, it is important to use a polyester fiber having flame retardancy for the pile yarn. As in the conventional technology, if only the base fabric portion is used, the pile weight will increase, the dye concentration in the pile yarn will increase, and if the colored pile surface is subjected to printing, etc., the meltability of the heat-fusible fiber will increase. Is significantly reduced, and even if the base cloth portion and the base cloth portion containing the flame retardant are back-coated, the combustion cannot be prevented. The flame-retardant polyester fiber in the pile yarn referred to here may be any one that already contains a known halogen element (bromine, etc.) or phosphorus element, and mixing or copolymerization in the polymer stage, or fiber / thread It may be added at any stage during the dyeing process. However, from the viewpoint of smoke generation and harmful gas generation during combustion, it is preferable that the main component is phosphorus element. Its content is 3000 to 10000 ppm, preferably 40
The range of 00 to 7000 ppm is good. 3000 pp phosphorus element
If it is less than m, the flame retardance is lowered, which is not preferable. On the other hand, if it exceeds 10000 ppm, not only the spunability and the physical properties inherent to the fiber are deteriorated, but the durability of the pile yarn is impaired, and it is not economically preferable.

Next, it is important that the base cloth part is a mixture of the primary heat-melting fiber (hereinafter fiber A) and the polyester fiber containing at least phosphorus element (hereinafter fiber B), and further the fiber (A). It is most important for the present invention that the mixing ratio [%] (X) of the above and the phosphorus element [ppm] (Y) contained in the fiber (B) satisfy the following formula. 300 ≦ (Y-100 · X) ≦ 10,000 However, 10 ≦ X ≦ 70

In the base cloth portion, it is essential to use colored threads in order to improve the product quality of the pile cloth. In the pile fabric having a high degree of flame retardancy according to the present invention, the flame-retardant polyester fiber used for the base fabric portion in the prior art (Japanese Patent Laid-Open No. 59-53781) is dyed in a medium to dark color by a known method. Have been used. In recent years, however, there is a growing need for high-quality products such as multi-colors and multi-patterns, and for pile fabrics that require high flame retardancy such as railway vehicles, various types of print processing (coloring, discharge printing, etc.) on colored pile fabrics. ) Etc. came to be tried. Since the flame-retardant polyester fiber contains a flame-retardant agent, it is more easily dyed than ordinary polyester fiber, and conversely, the dye contained in the fiber is easily drawn to the fiber surface by heat. It has a property. Therefore, in the flame-retardant polyester fiber dyed in a dark color, especially in the base fabric portion by the heat treatment (generally 160 to 200 ° C.) during the printing process or the process of imparting functionality (water repellency, oil repellency, deodorization, etc.). The transfer of the dye of (3) to the pile yarn (sublimation by heat) occurs.

In order to solve the above-mentioned problems, the present inventor has focused on the heat-melting fibrous material, and contains at least a phosphorus element in order to obtain flame retardancy of the base cloth portion and the pile cloth as a whole. It has been found that it is most effective to use it together with polyester fiber. The heat-meltable fiber is a heat-meltable fiber such as polyester, polyamide polyimide, polyphenylene sulphite, aramid, and polypropylene with various pigments added and dispersed therein.Azo lake type, insoluble azo type, condensed azo type , Anthraquinone-based, phthalocyanine-based, dioxazine-based organic pigments, or various inorganic pigments such as iron oxide, chromium oxide, cobalt blue, lead chromate, ultramarine, and carbon black can be used. Any dye or a mixture thereof can be used for coloring the above. Further, the heat-fusible fiber is preferably one having a thermal decomposition behavior similar to that of the flame-retardant polyester fiber or a high thermal decomposition temperature from the viewpoint of flame retardancy.

The above-described method of mixing the fibers A and B is a known method, that is, raw cotton, mixed spinning, mixed fiber, composite combustion, covering at the stage of raw yarn, or interwoven or interwoven knitting when forming the base fabric portion. Any method may be used as long as the base cloth portion is uniformly colored. In addition, the mixing ratio (X)% of the fiber A and the phosphorus element amount (Y) ppm contained in the fiber B are 3000 ≦ (Y-100 · X) ≦ 10000,
It is most important that 10 ≦ X ≦ 70 (%), and the value of (Y-100 · X) is 3
If it is less than 000, the high flame retardancy referred to in the present invention cannot be obtained, and if it exceeds 10,000, the flame retardancy is sufficient, but the content of the phosphorus element in the fiber B becomes high, and the yarn-forming properties and yarn properties are remarkably increased. Not only will it decrease, but it will also be economically disadvantageous. (Y
The value of −100 · X) is more preferably 5000 to 80.
00 is desirable. The mixing ratio (X)% of the fiber A is 1
If it is less than 0, it cannot be said that the base cloth portion is colored, and the quality of the entire pile cloth is deteriorated. When (X)% exceeds 70, coloring is sufficient, but the flame retardant effect of the mixed fiber B is not sufficiently exerted, the phosphorus element amount of the fiber B is remarkably increased, and the thread-forming property of the fiber B It is not preferable because the physical properties are deteriorated. More preferably, the X (%) value is 3
0 ≦ X ≦ 60 is desirable.

[0012]

[Operation] The combustion behavior of polymer materials is complicated and varies depending on the combustion conditions, etc., and if a large number of polymers are combined, theoretical analysis is almost impossible. The present inventor has achieved the present invention from the experience obtained by experimenting with many material combinations after spending many years in commercializing polyester fibers containing elemental phosphorus, and the reason is not always clear. In the same polymer, the heat transfer fusible fiber (A) and the polyester fiber (B) containing a phosphorus element are independently spun into the pile base fabric portion, and then mixed together to make the heat transfer and flame retardation in the same polymer. The effect of increasing the decomposition temperature of the polymer required for flame retardation and the effect of increasing the heat capacity of the polymer, especially in the case of inorganic pigments used for the primary deposition, are exhibited by the system Flame retardant effect of the above compounds, namely oxygen blocking effect by protective film of phosphoric acid layer formed by thermal decomposition and carbonization (solid residue) of organic substances and carbonized film by dehydration effect of polymetaphosphoric acid It is considered to be due to have been performed efficiently.

[0013]

【Example】

Examples 1 and 2 Comparative Example 1 Conventional Examples 1 to 3 • As a pile yarn, polyester raw cotton 2d x 51 mm and polyester element copolymerized (p = 7,000 ppm) polyester raw cotton 2 d x 51 mm were used to make spun yarn 20 s / 2, usually. By the method described above, cheese dyeing was performed at 130 ° C. for 30 minutes using a disperse dye having high light resistance. The dye concentrations used were 2% and 5%.・ On the other hand, for the base cloth part, polyester raw cotton copolymerized with phosphorus element (p = 6000, 8000 ppm) 2d × 51 mm
Made of spun yarn 20s / 2 each using 100%, and carbon-containing (1.2wt%) polyester fiber 3
Spun yarn 20 obtained by blending 30, 50, and 70% of d × 51 mm
created s / 2. The former was subjected to a dyeing process for coloring in the same manner as the pile yarn, and the latter was used as it was without a dyeing process. A warp pile double woven fabric is prepared by using the pile yarn and the yarn for the base cloth portion, and after a predetermined pile length is formed by a usual method of brushing and shirring, a resin treatment containing a phosphorus-based flame retardant (resin
70 g / m ² ) was applied. After that, some of the products were printed using a rotary printing machine by a known method, fixed with a dry heat of 180 ° C. for 5 minutes, washed with a jet dyeing machine, dried, brushed and shirred, and then exposed. The pile fabric shown in 1 was obtained.

[0014]

[Table 1]

The conventional example 1 is a polyester fiber which does not have flame retardancy in the pile yarn, but the pile yarn has a low dye concentration and the pile weight is small, but the flame retardancy is good. As described above, when the pile weight becomes large, the dye concentration becomes large, or the pile cloth is printed, the flame retardancy deteriorates. In Example 1, since the pile yarn is a flame-retardant polyester fiber, the flame resistance is good even when the pile weight and the dye concentration are large. Not only is it good, but there is no stain of the hue of the base fabric on the pile yarn. However, as in Comparative Example 1, the value (Y-100.X) of the phosphorus element content (Y) ppm of the fiber (B) of the base cloth portion and the mixing ratio (X)% of the fiber A is as small as 1000 ppm. , Flame retardancy is poor.

[0016]

According to the present invention, it is possible to provide a pile fabric having high quality and high flame retardancy in which the hue of pile yarn does not change even by heat treatment such as a printing process.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display part D04B 1/04

Claims (1)

[Claims] 1. A flame-retardant polyester fiber is used for a pile yarn, and a base fabric portion is mixed with a primary heat-meltable fiber (A) and a polyester fiber (B) containing at least a phosphorus element. A pile cloth characterized in that the mixing ratio [%] (X) of (A) and the phosphorus element [ppm] (Y) contained in the fiber (B) satisfy the following formula. 3000 ≦ (Y-100 · X) ≦ 10000, but 10 ≦ X ≦ 70