JP2011149139A - Flame retardant opal processing thread and fabric, clothing and interior ornament using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thread and a fabric for opal processing comprising a polyester fiber, excellent in flame retardancy and little load to the environment caused by HBCD (hexabromocyclododecane) and the like, and clothing and interior ornaments using the same. <P>SOLUTION: The combination of a first yarn 20 comprising a polyester fiber having flame retardancy with a second yarn 30 comprising a cation dyeable polyester fiber having larger alkali reducing velocity in comparison with the first yarn as the thread 10 for flame retardant opal processing does not require flame retardant post-processing, therefore, exposure of HBCD and the like to the environment can be suppressed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to yarns and fabrics for opal processing, which are made of polyester fibers, have excellent flame retardancy and have little environmental impact, and clothing and upholstery products using these.

The process of forming a watermark pattern by interweaving and weaving dissimilar fibers such as polyester, cotton, silk, rayon, etc. and discharging one of the fibers is known as opal processing.
In general, polyester fibers are excellent in strength, weather resistance, chemical resistance, and the like, and thus opal processed products made of polyester fibers are required. Among them, there are many products that have been subjected to opal processing for interior decorations such as curtains and shades and clothing that require high design.
On the other hand, flame retardant properties may be required for these upholstery products and clothing products. For example, “a multilayer fabric having an interior made of a polyester dye-dyeable polyester fiber and both sides made of a regular polyester fiber, the cationic dye A flame retardant polyester fabric for curtains is known in which the dyeable polyester fiber is dyed black and is treated with a flame retardant as a whole (Patent Document 1).
As the flame retardant, for example, hexabromocyclododecane (hereinafter also referred to as “HBCD”) is widely used. It is known that since flame retardant processing can be performed at the same time, the cost can be reduced and it is convenient "(Patent Document 1).

JP-A 63-59475

However, the conventional flame-retardant polyester fabric has the following problems.
That is, as a general flame retardant processing method, a method in which a flame retardant is simultaneously put into a fabric dye bath and exhausted, a method in which the fabric is immersed in a flame retardant bath and heat-set, or the processing is performed as a raw yarn The method of performing in this state is known, and these are collectively referred to as “post-processing flame retardant”.

In recent years, environmental pollution due to HBCD contained in waste water when performing post-processing flame retardant in dyeing factories or the like is becoming a problem.
On September 22, 2004, HBCD was in the “Law Concerning the Examination of Chemical Substances and Regulations for Production, etc.”. It is difficult to decompose and accumulate, and it is unknown whether there is long-term toxicity to humans or higher predators. It is a substance designated as a first-class monitoring chemical substance as a chemical substance, and efforts are currently being made to reduce its usage.
In addition, phosphorus compounds may be used for post-processing flame retardant as an alternative to HBCD, but phosphorus compound flame retardants are easily hydrolyzed, and if there is no appropriate wastewater treatment facility, excess phosphorus components are present. May leak into the environment.
For example, when it is necessary to perform both opal processing and flame retardant processing, such as upholstery and clothing, perform opal processing after performing opal processing, or perform opal processing after performing flame retardant processing. In any case, environmental pollution due to HBCD accompanying post-processing flame retardant becomes a problem.

  In view of the above problems, the present invention provides a yarn and fabric for opal processing, which is made of polyester fiber, has excellent flame retardancy and has a low environmental load due to HBCD, and the like, and clothing and upholstery using these. With the goal.

The yarn for flame-retardant opal processing of the present invention comprises a first yarn comprising a polyester fiber having flame retardancy and an atmospheric pressure cationic dyeable polyester fiber having a higher alkali weight loss rate than the first yarn. It is characterized by combining two yarns.
In addition, the second yarn has flame retardancy.
Further, it is characterized in that at least the first yarn and the second yarn are twisted to form a twisted yarn.
The first yarn is a core, and the first yarn is covered with the second yarn to form a two-layer structure yarn.
Moreover, the flame-retardant opal processing fabric of the present invention is characterized in that the flame-retardant opal processing yarn is used at least for the weft.
The clothing and upholstery of the present invention are characterized by using the above-mentioned flame retardant opal processing fabric.

  When using opal processing that uses a general alkali as a main component as a fiber decomposing agent, the second yarn, which has a larger (faster) alkali weight loss rate than the first yarn, is mainly dissolved. Since the first yarn is decomposed and remains almost undecomposed, a watermark pattern is formed by the discharge. In this invention, the polyester fiber which has a flame retardance is used as a 1st thread | yarn, Since this 1st thread | yarn remains at the time of opal processing, a flame retardance is fully securable. That is, since the flame-retardant opal processing yarn of the present invention does not need to be post-processed flame retardant as in the prior art, exposure to the environment such as HBCD can be suppressed.

As described above, the flame-retardant opal processing yarn of the present invention cannot be conceived at all from a configuration in which a yarn composed of a flame-retardant polyester fiber and a yarn composed of a normal pressure cationic dyeable polyester fiber are combined. It has a remarkable effect of "suppressing environmental pollution by".
In the flame-retardant opal processing fabric using at least the flame-retardant opal processing yarn as the weft, the proportion of the first yarn with respect to the entire fabric increases as the area of the part removed by opal processing increases. Therefore, there is an effect that the flame retardancy is further increased. From the viewpoint of reducing the production cost of the fabric, it is preferable to use at least the flame-retardant opal processing yarn for the weft, but it may be used only for the warp or for both the weft and the warp.

In addition, the flame resistance of the opal processing yarn and the fabric, clothing and upholstery using the opal processing yarn can be reduced while suppressing exposure to the environment such as HBCD by giving the second yarn flame resistance. Can be increased.
In addition, the production cost can be reduced by twisting the first yarn and the second yarn into a twisted yarn.
Also, by using the first yarn as the core and covering the first yarn with the second yarn to form a two-layer structure yarn, the effect of suppressing the occurrence of dyeing spots and the improvement of flame retardancy The effect can be obtained.
The above-mentioned flame retardant opal processing fabric is suitable for use in interior decorations such as clothing, curtains, and shades that require design and flame retardancy.

The figure which shows the case where the yarn for flame-retardant opal processing is used as the twisted yarn The figure which shows the case where the yarn for flame-retardant opal processing is made into the double layer structure yarn The figure which shows the other example at the time of making the flame-retardant opal processing thread into a two-layer structure thread The figure which shows other embodiment of a 2nd thread | yarn

Hereinafter, the flame-retardant opal processing yarn 10 of the present invention will be described with reference to the drawings.
FIG. 1 shows a case where the flame-retardant opal processing yarn 10 is a twisted yarn.
The first yarn 20 is a multifilament yarn that is made of a polyester fiber having flame retardancy, and is formed by twisting a number of long fibers 21 (filaments) (four in FIG. 1) into one yarn.
The polyester fiber refers to a fiber made of polyethylene terephthalate, polybutylene terephthalate, or the like.
The polyester fiber having flame retardancy is a polyester fiber obtained by appropriately copolymerizing or blending a brominated flame retardant such as HBCD, a phosphorus flame retardant, a halogen flame retardant, a nitrogen flame retardant, a metal hydroxide flame retardant, or the like. . As the first yarn 20, for example, “Super Exter (registered trademark)” manufactured by Teijin Fibers Limited is suitable.

The second yarn 30 is made of a normal pressure cationic dyeable polyester fiber having a higher alkali weight loss rate than that of the first yarn 20, and a multifilament yarn obtained by twisting a plurality of long fibers (filaments) into a single yarn. It is.
The second yarn 30 is made of, for example, polyethylene terephthalate copolymerized with sodium sulfoisophthalic acid, and can be dyed with a cationic dye at normal pressure (eg, about 98 ° C. to 100 ° C.).
Here, the “alkali weight loss rate” refers to a decrease amount of the polyester fiber component per unit time in a weight loss treatment (alkali weight loss treatment) using a fiber decomposer mainly composed of alkali during opal processing.
Since the alkali weight reduction rate of the second yarn 30 is larger (faster) than the alkali weight reduction rate of the first yarn 20, the second yarn 30 is mainly adjusted by appropriately adjusting the treatment time of the alkali weight reduction treatment. It can be dissolved and decomposed.

The first yarn 20 and the second yarn 30 may be so-called monofilament yarns having only one filament, or spun yarn (spun yarn) in which short fibers (staples) are aligned and bundled and twisted. ) However, a filament yarn is generally used for the second yarn 30 made of a normal pressure cationic dyeable polyester fiber.
In the case of filament yarn, as shown in FIG. 1, first, a number of filaments 21 are left-twisted (Z-twisted) to obtain a filament yarn, and then a plurality of filament yarns are right-twisted (S-twisted). In general, it is a single yarn, but the twisting method is not limited to this.
In FIG. 1, two filament yarns 20 and 30 are used as a twisted yarn, but three or more filament yarns may be used. In this case, the first yarn 20 and the second yarn 30 are used. The material of the filament yarn other than is not particularly limited.

Next, an opal processing method using the flame retardant opal processing fabric will be described.
The flame retardant opal processing fabric of the present invention is a woven fabric using at least the flame retardant opal processing yarn 10 as a weft.
When forming a watermark pattern composed of an extracted portion and a non-extracted portion on the fabric by opal processing, the polyester fiber is subjected to an alkali reduction treatment. That is, an alkaline aqueous solution containing an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, or an alkaline earth metal hydroxide such as calcium hydroxide or magnesium hydroxide is used as a fiber decomposing agent, and colored as necessary. The agent is used in combination, and both are printed in the area to be the removed portion. Next, it heat-processes with a steamer, and performs washing | cleaning, weight reduction processing, etc. suitably.

At this time, since the second yarn 30 has a higher alkali reduction rate than the first yarn 20, the second yarn 30 in the region to be the discharge portion can be adjusted by appropriately adjusting the time of the alkali reduction treatment. 30 is mainly dissolved and decomposed. In this way, the area where the fiber decomposing agent is imprinted becomes a removed portion, and the fibers in the unprinted area remain on the fabric to become a non-exhausted portion, thereby obtaining a watermark pattern.
In general, a disperse dye is used as a colorant for polyester, but a cationic dye is preferably used for the second yarn 30 made of a normal pressure cationic dyeable polyester fiber. Pigments are not suitable because they can interfere with the flame retardant function.

Examples of the printing method of the fiber decomposing agent and the colorant on the fabric include an ink jet method, screen printing, and rotary printing. The ink jet method is used from the viewpoint that various patterns with various colors can be easily expressed. In addition, since it is generally not necessary to mass-produce fabric for opal processing, it is suitable to use screen printing from the viewpoint of production volume and cost.
As for the type of ink jet method, for example, a continuous method such as a charge modulation method, a charge jetting method, a micro dot method and an ink mist method, an on-demand method such as a piezo conversion method and an electrostatic suction method can be adopted. Among these, the piezo method is preferable because it is excellent in stability of ink discharge amount and continuous discharge property and can be manufactured at a relatively low cost.
In the above opal processing method, the fiber decomposer and the colorant are used at the same time. However, the present invention is not limited to this, and normal dyeing may be performed after the opal process. It may be used at the same time, and after opal processing, dyeing processing may be performed again.

Next, a case where the flame-retardant opal processing yarn 40 is a two-layer structure yarn will be described with reference to FIG.
The first yarn 50 is made of a polyester fiber having flame retardancy and constitutes the core of a two-layer structure yarn.
The second yarn 60 is made of a normal pressure cationic dyeable polyester fiber having a higher alkali weight loss rate than that of the first yarn 50, and covers the periphery of the first yarn 50 serving as a core.
FIG. 2 shows a structure in which only one layer of the second yarn 60 is coated, but the second yarn 60 may be coated with two layers as shown in FIG.
Further, as shown in FIG. 4, a flame-retardant opal processing yarn 80 may be configured by using the second yarn 30 having flame retardancy as the second yarn 70.
In order to impart flame retardancy to the second yarn 70, a brominated flame retardant such as HBCD, a phosphorus flame retardant, a halogen flame retardant, a nitrogen flame retardant, a metal hydroxide flame retardant or the like is appropriately copolymerized or Blend it.
Of course, the second yarn 70 having flame retardancy may be used in place of the second yarn 60 shown in FIG. 2 or FIG.
Moreover, as a kind of the flame-retardant opal processing yarns 10, 40, and 80 of the present invention formed by combining the first yarn and the second yarn, in addition to the above-mentioned twisted yarn and double-layered yarn, for example, false twisted yarn , Drawn yarn, blended yarn, looped yarn, interlaced yarn, covering yarn, and the like.

Hereinafter, the present invention will be described specifically by way of examples. The present invention is not limited to the following examples.
[Production of fabric]
As a warp, a 20d /-split polyester wooly yarn was used at a rate of 180 yarns / inch.
The weft yarn was a two-layer structure yarn. 75d /-, 84T / 36F made by Teijin Fibers Ltd. "Superexter (registered trademark)" made of flame-retardant polyester fiber is used as the first yarn as the core, and 30d /-, 33T as the second yarn. Normal pressure cationic dyeable polyester fiber made of Teijin Fiber / 36F was used, and the first yarn was covered with the second yarn.
A jacquard-patterned fabric having a width of 25 centimeters and a plain structure was created by driving 75 pieces / inch, and this was subjected to opal processing.

Table 1 shows the results of a flame retardancy test performed on the opal-finished fabric obtained in the above-described Examples based on the Ministry of Internal Affairs and Communications ordinance flameproof test method.
In the 45 ° micro burner method and the 45 ° coil method, flame retardancy was confirmed in each of the fabric, washing and washing 5 times, and dry cleaning 5 times.

Hereinafter, the present invention will be described in detail with reference to the second embodiment.
[Production of fabric]
As the warp, a 20d /-split polyester wooly yarn was used at a rate of 90 pieces / inch.
The weft was a twisted yarn. A normal pressure cation having 75d /-flame retardancy of 75d /-as the second yarn using "Superexter (registered trademark)" made by Teijin Fibers Limited of 75d /-made of flame-retardant polyester fiber as the first yarn A dyeable polyester fiber was used.
A base fabric woven by 70 / inch driving was created.
Table 2 shows the results of flame retardant tests based on the Ministry of Internal Affairs and Communications ordinance flame retardant test method using the base fabric thus obtained. In the present embodiment, no opal processing is performed.
In the 45 ° micro burner method and the 45 ° coil method, flame retardancy was confirmed in each of the fabric, washing and washing 5 times, and dry cleaning 5 times.
In general, when the flame retardancy of the polyester fiber and the cationic dyeable polyester fiber is compared, the cationic dyeable polyester fiber tends to burn more easily. As described above, since the fabric in this example is not subjected to opal processing, the flame retardancy test is considered to be higher in combustibility than the first yarn (polyester fiber having flame retardancy). No. yarn (a normal pressure cationic dyeable polyester fiber having flame retardancy) was carried out in a state where it was not subjected to alkali weight reduction treatment.
Thus, since the flame resistance was confirmed in the fabric in which the second yarn was left, the fabric after the opal processing and the second yarn was subjected to alkali weight reduction treatment had higher flame retardancy. I guess that.

  The present invention relates to yarns and fabrics for opal processing, which are made of polyester fibers, have excellent flame retardancy and have a low environmental impact due to HBCD, etc., and clothing and upholstery products using these. Has availability.

DESCRIPTION OF SYMBOLS 10 Flame-resistant opal processing thread 20 First thread 30 Second thread 40 Flame-retardant opal processing thread 50 First thread 60 Second thread 70 Second thread 80 Flame-resistant opal processing thread

Claims (6)

  A combination of a first yarn made of a polyester fiber having flame retardancy and a second yarn made of a normal pressure cationic dyeable polyester fiber having a higher alkali weight loss rate than the first yarn. Yarn for flame retardant opal processing.   The flame retardant opal processing yarn according to claim 1, wherein the second yarn has flame retardancy.   3. The flame-retardant opal processing yarn according to claim 1, wherein at least the first yarn and the second yarn are twisted to form a twisted yarn.   The flame-retardant opal processing according to claim 1 or 2, wherein the first yarn is used as a core and the periphery of the first yarn is covered with the second yarn to form a two-layer structure yarn. Yarn.   A flame-retardant opal processing fabric, wherein the flame-retardant opal processing yarn according to any one of claims 1 to 4 is used as at least a weft. An article of clothing and upholstery, characterized in that the flame-retardant opal processing fabric according to claim 5 is used.

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