JPS5818445A - Anti-static carpet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antistatic carpet having excellent antistatic performance even in low humidity conditions of s to * Rii and excellent aesthetics.

In conventional carpets with piles made of synthetic fibers or natural fibers such as wool, when you walk on the carpet, static electricity generated by the friction between the soles of your shoes and the carpet charges your body, causing your body to feel like a metal doorknob. If you come into contact with it, the static electricity charged in your body may be discharged, giving you a severe electric shock. Such an electric shock is said to be about aooov. − In order to solve this problem, it is known that conductive fibers are mixed in the pile of carpets, and metal fibers, metal-plated fibers, and conductive substances are mixed as conductive fibers. 9. Fibers coated with polymer dope, fibers blended with carpump, rack, etc. have been proposed.

However, all of these conventional conductive fibers have serious drawbacks and are not satisfactory. for example,
Metal fibers do not have bending recovery properties, so their conductive performance deteriorates when bent during use or processing, and it is not easy to mix them with other fibers.Furthermore, the color tone of carpets that are dyed in a lighter color than the unique color tone of metals. It has the disadvantage of being able to do a lot of things.

Metal-plated fibers require a uniform and continuous plating layer on the fiber surface, which requires smoothness on the fiber surface, which greatly limits the types of fibers that can be used. Alternatively, it has many drawbacks, such as the plating layer being easily peeled off during processing, low durability, and exhibiting a color tone peculiar to metal.

Fibers coated with a polymer dope containing a conductive substance also have the same drawbacks as the above-mentioned metal-plated fibers, such as peeling.

In order for carbon black-containing fibers to exhibit conductivity, it is necessary to knead more than 15% of carbon black into the polymer (To), and the disadvantage is that the black color of carbon black cannot be removed, which greatly impairs the color tone of light-colored carpets. have.

Additionally, methods have been proposed in which carbon fibers are added to the backing latex or conductive fibers are mixed only in the base fabric, but these methods have the drawback of having limited antistatic performance.

We hope to improve these shortcomings.
K has been reached.

That is, the present invention contains iodized steel and/or stannic oxide mold powder, and has an electrical resistance value of IX at IKV DC voltage.
An antistatic carpet containing dyeable conductive fibers with an L value of 50 or more and a hue of IG'Ω/aIK or less and an L value of 50 or more. It provides: It is particularly distinctive in that it does not reduce the color tone of carpets dyed in light colors. The electrical resistance value of the conductive fiber under IKV DC voltage is I
If the content of the fiber in the carpet is less than α1 weight, the antistatic properties of the carpet will deteriorate.

A pile part of the conductive fiber of the present invention mixed into O carpet,
The best antistatic performance is obtained when conductive fibers are mixed in both base fabric parts, but when the pile part is a loop pile, sufficient antistatic performance is achieved by mixing conductive fibers only in the pile part. On the other hand, when the pile part is cut pile, it is preferable to mix conductive fibers in the base fabric in terms of antistatic performance.

Methods of mixing pile yarn and conductive fibers include a method of blending pile yarn raw cotton and conductive fiber by spinning, a method of mixing pile yarn and conductive yarn containing conductive fibers by twisting or interlacing, or Any method can be used, such as aligning them with a creel of a tact machine. Any method may be used to mix conductive fibers with the threads constituting the base fabric.

Published by Japanese Patent Publication No. 5 (1973) (1-111835)
As described in the above publication, it is possible to adopt a method of mixing a conductive material such as carbon fiber into the backing packing layer of the carpet.

The present invention will be illustrated in more detail with reference to Examples below. In Tables 1 and 2, the color tone of Company 0 indicates good, Company × indicates poor, and Δ indicates the same as before.

Example 1 <Preparation of conductive fabric containing cuprous iodide> A 20 denier, strong 201 F 6-nylon monofilament was wound into a skein, and cuprous iodide was adsorbed onto it.
L value (Nippon Denshoku Kogyo Type ND-101DC color difference meter)
The electrical resistance value of 56.1XV is s x io”Ω/
My conductive fiber containing cuprous iodide was obtained (A).

<Preparation of conductive fiber containing stannic oxide-based mold powder> Conductive fermented stannic fine synthesized by adding antimony trioxide equivalent to 5 antimony atoms to tin atoms and firing. 100 parts by weight of powder and intrinsic viscosity α86 6
- 40 parts by weight of nylon at 260°C under normal pressure nitrogen flow.
After melting for 0 minutes, the volume resistance value was 47 x 10” (1
/- conductive composition was obtained.

This conductive composition was used as the component (B), 6-nylon with an intrinsic viscosity of L12 was used as the component (A), the component (B) was applied to the core, the component (A) was applied to the sheath, and the spinning temperature was 260°C. , spun at a spinning speed of 3001, then arc-stretched, L value (Nippon Denshoku type ND-101DO color difference needle) 7L11KV electric resistance under DC voltage 12 x 10''Ω, mu stannic oxide based mold. A powder-containing conductive fiber was obtained (B).

<Preparation of antistatic carpet> A tufted carpet gray fabric having a level loop with a pile weight α903 F/ml' was prepared using 100% g-nylon pile yarn of 160 denier. At that time, conductive fiber monofilaments produced under the above conditions were twisted into one of the pile yarn bundles. The tufted carpet greige thus obtained was dyed using a Quince dyeing machine in a conventional manner to three levels of light color, medium color, and light color, and then backing was performed with a conventional aBR latex for carpets to obtain a carpet. .

The antistatic performance of the obtained carpet was evaluated using JI8-10ffil.
(1979) 6-16-1 It was measured by the Stroll method under two conditions: relative humidity 20%, 40°C, and temperature 20°C.

In addition, the color tone of the produced carpet was visually judged.

The results are shown in Table 1.

Comparative Example 1 As a conductive fiber, a conductive fiber was prepared by applying a polymer dope containing carbon black to a nylon monofilament (electrical resistance value under IKV DC voltage was 2).
．． 5 x 10' ohm 24 m).

The antistatic performance and color tone of the obtained antistatic carpet were evaluated under the same conditions as in Example 1 except that this conductive fiber was mixed into the carpet. The results are shown in Table 1.

Table 1: Number of mixed books - Number of mixed books / Total number of pile rows (for example, 176
If there is a description, it means that conductive fibers are mixed in one of the six pile rows. ) Example 2 Using a 100-6 knife 2500 denier thread, it had a cut thread with a fabric weight of 13η, and 0.1% by weight of the same conductive fiber as in the pile was added to the base fabric. The antistatic performance and color tone were evaluated under exactly the same conditions as in Example 1 except that a tufted carpet was prepared. The results are shown in Table 2.

Comparative Example 2 Using the conductive fibers of Comparative Example 1, the antistatic performance and color tone of a carpet produced under exactly the same conditions as in Example 2 were evaluated. The results are shown in Table 2.

Table 2 Patent Applicant: Teijin Co., Ltd. Procedural Amendments March 9, 1980 Mr. Commissioner of the Japan Patent Office 1. Indication of the Case Patent Application No. 116-116500 2. Name of the Invention Electrifying Carpet 3. Person making the amendment Relationship to the case Patent applicant 1-11 Minamihonmachi, Higashi-ku, Osaka (300) Teijin Ltd. Representative Tomo Tokusue Column 6 of “Detailed description of the invention” in the specification, content of amendment 1) Contents of the specification Turtle 73j @ 6th line description 1-...
160 denier......"
...! 600 denier…”, he corrected.

2) Statement on page 7 @ line 7 of the specification [...
...0.90 s g/d..."
"...0.903kll/l...
"..." I corrected myself.

3) Statement on page 9, line 6 of the specification “...1.
3g/zeno......"
・1.3 Yl...'' and corrected it.

that's all

Claims (1)

[Claims] ■ IKV [electrical resistance value at current voltage is lXl0''Ω
An antistatic carpet characterized by having a hue of L value of 50 or more, and containing dyeable conductive fibers (L1 weight or more). The antistatic carpet according to patent claim 0*m, paragraph 1, containing a chemical, III steel. ■ The antistatic carpet according to patent claim oars, paragraph 1, wherein the conductive fibers contain stannic oxide based mold powder. .