JPH09140543A - Static control carpet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carpet, in which the arrangement position of a static control yarn with a high hue density is inconspicuous and which is good in static control performance by arranging a pile yarn mixed with a static control yarn and a pile yarn mixed with a pseudo static control yarn which has a hue similar to that of the above static control yarn and has no static control performance at a specified ratio. SOLUTION: In a static control carpet for restraining static electricity generated on walking on a carpet laid on a floor, a pile yarn mixed with a static control yarn and a pile yarn mixed with a pseudo static control yarn which has a hue similar to that of the above static control yarn and has no static control performance are arranged at a ratio of 1:1-1:30. As the static control yarn, a compound fiber is used in which a conductive polymer 1 mixed with a conductive material and a normal polymer 2 such as a polyester or the like are arranged in various forms as shown in the drawing, or a polyamide fiber or the like in which a coating of conductive metal or the like is formed on the surface thereof. The pseudo static control yarn has a hue similar to that of the static control yarn, and preferably the fineness is the same as that of the static control yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic carpet for suppressing static electricity generated when walking with footwear having leather soles or synthetic rubber soles on a carpet laid on the floor. .

That is, the present invention provides a carpet having a relatively dark hue such as black, dark brown, green brown, black brown, and grayish brown, which is provided with partial antistatic yarn having a high antistatic function to obtain antistatic performance. The present invention relates to a carpet in which the disposition position of the antistatic yarn having a high hue density is inconspicuous, and in particular, in the carpet using a pile yarn that is colored in a light color by dyeing or dyeing yarn, the hue that is partially disposed, The present invention relates to a carpet that can prevent high-density antistatic yarn from standing out.

[0003]

2. Description of the Related Art Conventionally, as a method of imparting antistatic performance to a carpet, pile yarns constituting the carpet, primary base cloth in the case of tufted carpet, backing agent for preventing pile pull-out, secondary base cloth or tile carpet In each part of the resin base material, etc., a conductive material is mixed or mixed so as to exhibit antistatic performance.

As a general method for providing antistatic performance to the pile yarns used, there is a method of mixing antistatic yarns having good electroconductivity, and this method includes various types of carpets such as tufted carpets and various carpets. This technology can be applied to other pile products. The method of mixing the antistatic yarn with the pile yarn is a method which is widely and generally used because excellent antistatic performance can be obtained by using the antistatic yarn having excellent performance.

The usage ratio of the pile yarn mixed with the antistatic yarn used in this method varies depending on the target antistatic performance and the conductive performance of the antistatic yarn to be used. It is not necessary to arrange pile yarns in which the antistatic yarns are mixed, and when using the antistatic yarns having excellent antistatic performance, the antistatic yarns are placed every 1 to 30 in the pile yarn row. It is sufficient if the mixed pile yarns are arranged.

However, in the antistatic yarn having excellent antistatic performance, carbon black is generally used as a conductive material. For example, as described in JP-A-54-134117, a black conductive material is used. Even if it is exposed on the fiber surface or black conductive material is not exposed on the fiber surface as described in JP-B-52-31450, it is colored and has a high hue density, and the antistatic yarn itself. Even though its fineness is thin, a dark shadow can be seen in the pile thread. This shadow makes one pile yarn look black, and every 1 to 30 rows of pile yarn mixed with antistatic yarn are observed as black streaks. As this streak deteriorates the apparent quality of the carpet, it is disliked and improvement is desired.

In order to eliminate the black stripes due to the antistatic yarn, it is necessary to use the pile yarn in which the antistatic yarn is mixed in all the rows of the pile yarn so that the entire carpet does not have a slightly dark hue. No, but black streaks are not observed, which is one solution. However, the antistatic yarn is generally very expensive, and it is not recommended to use the pile yarn in which the antistatic yarn is mixed in all the rows of the pile yarn in terms of product cost.

[0008]

Conventionally, when pile yarns mixed with colored antistatic yarns having excellent antistatic performance are arranged every 1 to 30 every 1 to 30 in the pile row of the carpet, Black streaks due to the pile yarn mixed with the antistatic yarn are observed, and the apparent deterioration of quality is inevitable.

Further, if pile yarns mixed with antistatic yarns are arranged in all the rows, high cost becomes a problem.

According to the present invention, even if the pile yarns mixed with colored antistatic yarns having excellent antistatic performance are arranged one by one in every 1 to 30 rows of tufting piles, the antistatic yarns are arranged. It is an object of the present invention to provide an anti-static carpet in which black streaks (presence of anti-static yarn) due to pile yarn mixed with is inconspicuous and which is lower in cost than mixing anti-static yarn in all pile yarns.

[0011]

Means for Solving the Problems The inventors of the present invention, as a result of diligent tests to solve such problems, have no antistatic ability, but have the same fineness and hue as the antistatic yarn, It has been found that the object of the present invention can be achieved by mixing an inexpensive pseudo antistatic yarn with a pile yarn that does not use an antistatic yarn, and tufting in parallel with a pile yarn that does not include an antistatic yarn. Invented.

That is, according to the present invention, a pile yarn in which an antistatic yarn is mixed and a pile yarn in which a pseudo antistatic yarn having a similar hue to the antistatic yarn but having no antistatic property are mixed are 1: 1 to 1: 1. The gist of the antistatic carpet is that it is arranged at a ratio of 30.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The antistatic yarn in the present invention is a fiber yarn having excellent conductivity as one index showing antistatic performance, but as a quantitative numerical value for judging the conductivity, it is evaluated by an electric resistance value, 9.
It shows an electric resistance value of 9 × 10 ⁹ Ω / cm or less.
Incidentally, the electric resistance value of general fiber yarns other than the antistatic yarn is 1 × 10 ¹⁰ Ω / cm or more. The electric resistance value is a value obtained by converting the electric resistance value when a voltage of 500 V is applied by grasping both ends of a 10 cm long antistatic yarn with electrode terminals covered with keratin and aluminum foil, per cm. Is.

The above-mentioned high-performance antistatic yarn has a conductive polymer 1 prepared by kneading a conductive material such as carbon powder and a normal polymer 2 such as polyamide or polyester as shown in the sectional view of FIG. The arranged composite fibers may be those in which a coating of a conductive metal or a conductive metal compound is formed on the surface of polyamide fibers, polyester fibers, or the like. These high-performance anti-static yarns are colored black, dark brown, green-brown, black-brown, grayish-brown, etc. In order to obtain sex, it is said that coloring is not stopped.

The fineness of the antistatic yarn is usually 10 to 50 denier, and the number of filaments is small even in the case of monofilament or multifilament. Therefore, the fineness of the pile yarn of the carpet is 1 to 10%, which is a small percentage of one pile yarn. However, these high-performance anti-static yarns are currently traded at a very high price.

In mixing these antistatic yarns with carpet yarns, pile yarns having antistatic properties can be obtained by aligning, or twisting or blending fibers. Generally, twisting the antistatic yarn in the process of twisting pile yarn at the same time.
This is to mix the antistatic yarns at the same time in the process of intertwining the pile yarns for carpet.

The pseudo antistatic yarn in the present invention is a yarn having a hue similar to that of the antistatic yarn, and the fineness thereof is preferably about the same as that of the antistatic yarn. The pseudo antistatic yarn is obtained by dyeing a synthetic fiber such as ordinary polyamide fiber or polyester fiber in a hue similar to that of the antistatic yarn and coloring it by a method such as coating. The electric resistance value is 1 × 10 ¹⁰ Ω / It may be cm or more. Needless to say, it may be a spun-dyed yarn spun by kneading a colorant at the polymer stage.

Similar to the antistatic yarn, the pseudo antistatic yarn is also mixed with the carpet yarn and used as a part of the pile yarn.

In the carpet of the present invention, the ratio of the pile yarn rows in which the high performance antistatic yarn and the pseudo antistatic yarn are mixed is 1: 1 to 1:30, and more preferably 1 :.
10 and the rug test method of JISL-1021 (23
It may be arranged so as to satisfy 3 Kv or less at a walking band voltage of (° C. × 25% RH). Even if the arrangement is chaotic (at random), it also repeats 1 :, 2:
It may exhibit a constant repeating pattern such as repeating 2 or repeating 1:10.

The method for producing the carpet of the present invention may be a method using a tufting machine, a method of forming a pile using a loom or a knitting machine, and the method of coloring the pile may be either dyeing or post-dyeing.

[0021]

According to the present invention, high performance (electrical resistance of 9.9) is obtained.
The presence of the colored antistatic yarn becomes inconspicuous by mixing the colored pseudo-antistatic yarn with the pile yarn in which the antistatic yarn of (× 10 ⁹ Ω / cm or less) is not mixed.

[0022]

The present invention will now be described in detail with reference to examples. In the examples, carpets were evaluated by the following methods.

(1) Warm muscle The warm muscle was visually evaluated with an antistatic yarn.

(2) Antistatic Performance In accordance with JIS L1012, the electrification voltage during walking with leather sole shoes was measured.

(3) Cost of pile yarn When the cost is about the same as or less than the case of using the pile yarn in which the antistatic yarn is not mixed at regular intervals according to the conventional technique, the cost is marked as ○, and the cost is slightly increased. △,
The case where the cost significantly increases was evaluated as XX.

Example 1 Nylon BCF (bulk yarn for carpet <W41A> manufactured by Unitika Ltd.) 12 as a raw yarn for pile yarn
Nylon anti-static yarn Mega III [manufactured by Unitika Ltd., electric resistance value: 1.2 × 10 ⁷ Ω / cm, hue: black, composite form; FIG. 1 ( B)] 20 denier / 2 filament,
Nylon-dyed yarn 20 denier / 2 filament (electrical resistance; 5.9 × 10 ¹⁴ Ω / cm, hue;
Pile yarn X and pile yarn raw obtained by ply twisting the yarn for the pile yarn and the nylon antistatic yarn and the under-twisted yarn for the pile yarn by a Bell-doll direct twisting machine using A pile yarn Y, which is a twisted yarn of a yarn and a pseudo-electrically controlled yarn, and a twisted yarn of a raw yarn for pile yarn are arranged at a ratio of 1: 5, and a gauge;
Tufting with 12 stitches / inch, pile height 8mm, pile weight 1000g / m ² with 1/8 tufting machine, acid dye [Tektilon Yellow 3R (200%) 0.029% owf, with Wins dyeing machine] TECTIRON RED 2B
(200%) 0.00936% owf, Tektylon Blue 4R01 (200
%) 0.00904% owf]] to obtain a beige color to obtain an antistatic carpet of the present invention.

Comparative Example 1 A comparative example was made in the same manner as in Example 1 except that only the pile yarn raw yarn used in Example 1 was tufted only with the pile yarn Z which was plied with a Bell-Dol type direct twisting machine. A carpet as No. 1 was obtained.

Comparative Example 2 A carpet as Comparative Example 2 was obtained in the same manner as in Example 1 except that tufting was performed using only the pile yarn X used in Example 1.

Comparative Example 3 A carpet as Comparative Example 3 was obtained in the same manner as in Example 1 except that tufting was performed using only the pile yarn Y used in Example 1.

Comparative Example 4 Comparative Example 3 was carried out in the same manner as in Example 1 except that the pile yarn X used in Example 1 and the pile yarn Z used in Example 2 were arranged and tufted at a ratio of 1: 5. Got the carpet as.

Table 1 shows the obtained results of Example 1 and Comparative Examples 1 to 3 together with the warp, antistatic performance and cost comparison.

[0032]

[Table 1]

As is clear from Table 1, the carpet of Example 1 according to the present invention was less prominent in the presence of the antistatic yarn, exhibited no anti-warping, showed excellent antistatic properties, and had a small increase in cost. . On the other hand, Comparative Examples 1 and 3 in which the antistatic yarn is not used are inferior in antistatic performance, and Comparative Example 2 in which only the pile yarn mixed with the antistatic yarn is used have a large cost increase and the antistatic yarn is partially used. Comparative Example 4, which was used for No. 1 and did not use the pseudo antistatic yarn, had a noticeable warp due to the antistatic yarn.

[0034]

According to the present invention, even if the pile yarns mixed with the colored high-performance antistatic yarns are partially arranged, the presence of the antistatic yarns is conspicuous and is not recognized as a warp defect. Can be provided.

[Brief description of the drawings]

FIG. 1 is an example of a sectional view of an antistatic yarn that can be used in the present invention.

[Explanation of symbols]

 1 conductive polymer 2 ordinary polymer

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[Procedure amendment]

[Submission date] December 22, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that they do not have antistatic performance, but have the same fineness and hue as antistatic yarns and are inexpensive. It was found that the object of the present invention can be achieved by mixing a pseudo antistatic yarn with a pile yarn that does not use an antistatic yarn, and tufting in parallel with the pile yarn that does not include an antistatic yarn. Came to.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

In the carpet of the present invention, the ratio of the pile yarn rows in which the high performance antistatic yarn and the pseudo antistatic yarn are mixed is 1: 1 to 1:30, and more preferably 1 :.
10 and the rug test method of JISL-1021 (23
It may be arranged so as to satisfy 3 Kv or less at a walking band voltage of (° C. × 25% RH). Even if the arrangement is chaotic (at random), it also repeats 1: 1
It may exhibit a constant repeating pattern such as repeating 2: 2 and repeating 1:10.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

Example 1 Nylon BCF (bulk bulk yarn <W41A> for carpet manufactured by Unitika Ltd.) 1225 denier / 68 filament was used as the raw yarn for pile yarn, and nylon antistatic yarn Mega III [Unitika Ltd.] was used as the antistatic yarn. Made, electric resistance value;
1.2 × 10 ⁷ Ω / cm, hue: black, composite form; FIG. 1
(B)] 20 denier / 2 filaments, nylon denier yarn 20 denier / 2 filaments (electrical resistance: 5.9 × 10 ¹⁴ Ω / cm, hue: black) as a pseudo-electrically controlled yarn, and directly applied to a bell doll type Using a twisting machine, ply yarn X, which is a ply yarn original yarn and nylon antistatic yarn, and a ply yarn original yarn undertwisted yarn, and pile yarn original yarn and pseudo antistatic yarn Pile yarn Y obtained by ply twisting the twisted yarn and the under-twisted yarn for the pile yarn at a ratio of 1: 5, and a gauge; 1/8 tufting machine, 12 stitches / inch, pile height 8 mm , Tufting with a pile weight of 1000 g / m ² ,
Acid dye [TECILON YELLOW 3R]
(200%) 0.029% owf, Tektylon Red 2B (200%) 0.00
936% owf, TECTYLON BLUE 4R01 (200%) 0.00904% ow
The composition of f) was dyed to beige to obtain the antistatic carpet of the present invention.

Claims (1)

[Claims] 1. A pile yarn in which an antistatic yarn is mixed and a pile yarn in which a pseudo antistatic yarn having a hue similar to that of the antistatic yarn but having no antistatic property are mixed are in a ratio of 1: 1 to 1:30. An anti-static carpet characterized by being arranged.