JPS5988956A - Conductive tricot feather fabric - 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 electrically conductive tricot coated fabric, and more specifically, to an electrically conductive tricot fabric made of a composite fiber with good electrical conductivity and a normal thermoplastic synthetic fiber. The present invention relates to a conductive tricot-covered fabric, characterized in that the tricot-covered fabric is used in the transinsertion tissue of the tricot-covered fabric.

Conventionally, conductive fabrics have been made using conductive threads made by mixing conductive synthetic fibers containing conductive particles such as carbon black with strings that do not carry static electricity.
A method of imparting a conductive effect is known. However, when using a conductive yarn containing carpump book, the conductive yarn exhibits a black to black-gray color, and a coated yarn is used. (Even when used for the cloth part, the part exhibits a blackish-gray color, so a uniform appearance cannot be obtained, and its uses are usually limited.

In recent years, in order to eliminate such drawbacks, white or white color has been developed.

Various composite fibers containing gray-white conductive particles have been proposed. However, this J, is it possible to combine eel composite fibers with ordinary thermoplastic synthetic fibers? When the conductive yarn is knitted into the base fabric of Tricot 1-fabric and made into a covered fabric, the conductive effect cannot be maintained due to the knitting tension at the time of knitting and the fabric tension at the time of raising. Also, irregular streak defects occurred, and a uniform appearance could not be obtained, making it unsuitable for use as a conductive cloth.

In order to eliminate such conventional drawbacks, the present invention has made a conductive yarn consisting of a composite fiber impregnated with conductive dioxidized fibers and a normal thermoplastic synthetic fiber as a result of extensive research. After that, this was used as a transinsertion tissue separately from the base fabric of the tricot RLI suspension.

The tricot fabric is knitted and then raised to create a hairy texture.11
The present invention was achieved by discovering that the drawbacks of the conventional method can be overcome by creating a cloth.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive conductive fabric having a conductive effect and having a uniform appearance without irregular streak defects.

1 That is, 1 The present invention is a conductive composite fiber containing conductive tin oxide and/or particles coated with conductive tin oxide in another inorganic substance, and a conventional thermoplastic composite +J
This conductive tricot cloth is characterized in that a bundle of conductive yarns consisting of & fibers is used in the transversely inserted structure of the 1 ricot cloth.

In the present invention, since the conductive thread is only used for the tricot insertion tissue, it does not receive any effect even when the tricot is raised.

Therefore, a tricot-covered fabric with a uniform appearance can be obtained without any loss in conductivity or effectiveness.

After creating a conductive yarn by combining good composite fibers and ordinary thermoplastic synthetic fibers by twisting or fluid treatment, a transverse insertion structure is adopted separately from the base fabric of the tricot fabric, and this structure is conductive. After knitting a T tricot fabric using the natural yarn, a coated fabric was created.

An object of the present invention is to provide a conductive tricot cloth having a sufficient conductive effect and a uniform appearance.

Two aspects of the present invention will be described in detail below.

First, the composite fiber used in the present invention has a conductive layer 71 of oxidized second f! A and/or refers to a composite fiber with good conductivity containing particles in which conductive tin oxide is coated on another inorganic substance, and conductive tin oxide particles or
Particles obtained by coating other inorganic materials with conductive tin oxide can be prepared using 'J! ! 'A: i will be. Examples of the other inorganic substances mentioned here include titanium oxide and magnesium oxide, but particularly preferred are particles containing stannic oxide whose conductivity has been increased with a small amount of an antimony compound.

71 or less, preferably 5μ or less.

The composite #a fiber of the present invention contains conductive particles as described above,
It consists of a thermoplastic polymer IAI mainly composed of polyester, polyamide, polyolefin, etc. and a polymer rB with good fiber forming properties such as polyester, polyamide, polyolefin. The content of tin particles is 25-80% in the prison component,
More preferably.

The proportion of (A) acid component and [B) component is 5:95 to 50:50 by weight. Preferably 15:8
5-511: 511. The cross-sectional shape of such composite fibers may have any structure, such as one in which the captive component is the core and the 1B] component is the sheath, the opposite structure, or the captive component is scattered on the surface of the IB) component. . Incidentally, the above-mentioned composite fine exhibits a gray hue and has an electrical resistance exhibiting a conductive effect of, for example, 8XIU'Ω and a scratch.

Next, in the present invention, a conductive yarn can be obtained by compositing the above-mentioned conductive composite fiber with a normal thermoplastic synthetic fiber, but the purpose is that the conductive composite fiber alone cannot have a tricot structure , Thread strength is low due to fabric tension in the hair forming process, thread breakage occurs frequently during tricot knitting, large bags are prevented from occurring due to fabric tension during the hair forming process, and conductive composite fibers The purpose is to prevent the conductive effect from decreasing due to unstretching. Therefore, when producing a conductive thread, the purpose can be achieved by combining the filaments by ordinary twisting or by fluid treatment under such conditions that the convergence between the filaments is maintained. Furthermore, in order to make the striations of the conductive yarn as difficult as possible to see, the thickness of the conductive yarn is equal to or equal to that of the normal thermoplastic synthetic fiber used in the tricot base fabric. It is preferable that the fineness is #1.

Next, to create a conductive fabric, the fabric is knitted using a tricot machine.9 In the present invention, conductive threads are knitted on a glue-inserted weave separately from the base fabric of the tricot fabric to obtain a tricot fabric. It is characterized by this.

Conventionally, when knitting conductive tricot fabrics, conductive threads are usually knitted with the same structure as the tricot base fabric at intervals necessary to exhibit a conductive effect in the base fabric of the tricot fabric. Met. In this case, during tricot knitting, needle knockover may cause the tricot
Attraction of ge.

A large knitting tension is applied at the time of escape, etc., and a tension that is excessive than the yarn tension that is limited to maintain the conductive effect is applied, reducing the conductive effect or preventing the conductive effect from being maintained. Measures such as lowering the thread tension of the entire thermoplastic synthetic fiber used in the base fabric are employed, but in that case, there are problems such as poor thread convergence and thread breakage during composition. In addition, for the woolen fabric as used in the present invention, after the tricot fabric is knitted, it undergoes a hairing step, but in normal cases, it is usually followed by a hairing means and then a raising step. In this raising process, it is natural to apply tension to the tricot fabric in the warp direction, and if the fabric is knitted with the same texture as the base 411 of the tricot fabric, there is a limit to maintaining conductivity during tensioning of the fabric. It is a well-known fact that the tension must be higher than the actual tension. For this reason, a tricot base fabric cannot provide a sufficiently satisfactory conductive effect. In addition, when conductive yarn is knitted with the same texture as the base fabric part of tricot fabric, the part where the conductive yarn is used in the raising process has different fabric elongation characteristics from other thermoplastic synthetic fiber parts, so the pile part This caused a change in the state of the loops being pulled out, and uneven warp defects occurred in the resulting tricot-covered fabric.

It is also a well-known fact that a uniform appearance cannot be obtained.However, the present invention is the result of extensive research in order to eliminate the above-mentioned drawbacks. 1- The base fabric of the ricott fabric is made of ordinary thermoplastic synthetic fibers, and the conductive threads are spaced at a distance of 1, for example, 1 wood/
Adopts a trans-insertion structure that can be inserted along the same needle with an inch Uri, and the pile part uses a normal thermoplastic synthetic edge 711, and the pile part uses a normal thermoplastic synthetic fiber. Then, I made a tricot knitting.

When proceeding with formation in such a manner, is there any guidance? The E thread is
During tricot knitting, C1 knitting along the same needle can be inserted in the warp direction while the tension remains low, so there is no decrease in the conductive effect due to the tension applied to the conductive yarn.
In addition, in the raising process during hairing, there is no relation to the fabric tension of the base fabric, so there is no decrease in the guiding effect due to the load of thread tension due to fabric tension in the raising process.
Further, even when the fabric is stretched, it has no relation to the base fabric portion, and the loop pull-out of the binding portion becomes uniform, and the resulting tri-cut fabric also has a ladle-like appearance.

Next, as for the raising process and dyeing finishing process of making hair from tricot fabric, as mentioned above, the insertion direction of the conductive yarn is devised regardless of the tricot and fabric part.
For each process, it is sufficient to carry out 9 times of napping and dyeing in the present invention.

It is preferable that a tricot fabric is dyed in a conventional jet dyeing machine after being dyed using a commonly used needle cloth napping machine, and then finished setting is performed using a setter.

Regarding the appearance of the tricot covered fabric thus obtained, the uniformity was examined by visual judgment. As a result, no uneven warp-like defects were observed, and a covered fabric with a good appearance was obtained.

Regarding the conductivity of the tricot covered fabric, after cutting the insertion point of one conductive thread into a length of 10α and fixing both ends with paste, the conductivity was measured using the current-voltage method using AATCC-76-7.
1xio' when measured at a measurement voltage of 500v according to 5.
Ω, scratch, and showed good conductive effect.

In the present invention, as described above, a conductive yarn is created from a composite m-fiber containing conductive 2M oxidized particles and a normal thermoplastic synthetic fiber, and a conductive yarn is created from a transversely inserted structure different from the tricot base fabric part. Because it is organized as follows.

As a conductive cloth, it fully satisfies conductivity and has a uniform appearance, so it can fully perform the function as a conductive cloth. .

The present invention will be specifically explained below with reference to nine examples.

Example 1 Tin oxide particles 5 having a particle size of 0.5μ and a specific resistance of 1Ω, 01
Chips IA obtained by melting and uniformly dispersing 0 parts of nylon 6] and 2 ordinary nylon 6 chips (B) at a heavy nail ratio of 1
Using an extruder-type melt composite spinning machine at a ratio of 5:85, a 20 denier/2-fiber composite fiber having chips (A) as a core component and chips as a sheath component was obtained.

What is the unique performance of this composite fiber?

Its hue is grayish white, and its electrical resistance value is 8X10'Ω, l1
It was l11.

This composite fiber and ordinary polyester multifiber 7G denier/26 fiber were prepared.

Next, using a regular tricot knitting machine, polyester multifilament was added to the pile part and base fabric part of the tricot fabric.
Using 75 denny/L'/56 fiwoment, +'+? Kit: A 1' fabric was knitted using 70 denier yarn/26 filament core 1 for the transverse insertion tissue with a gap of 1 wood/inch. Separately, for comparison, we used Borientel Multifilament 75 Tenyl 156 filament in the pile part of the tricot fabric, and 7i of the tricot fabric (in the fabric part, we used Polyester lémardifilament 1-75 mite filament). zlz / 56 Filamen!・N7 wood and conductive i1+, 'l 1 yaw one thread, that is, 1 conductive thread is used at the same time in the base fabric at a rate of 1 wood/inch. We knitted a ricotto fabric.During knitting, no thread breakage was observed when guide threads were used in the warp insertion tissue, but when knitted simultaneously into the base fabric, thread breakage occurred per 50m of fabric. 51 thread cut occurred, and external disease also appeared as a strong warp muscle.

Next, both of the obtained fabrics were brushed with a normal 91 fabric raising machine.
After layering, a conventional jet dyeing process was carried out, followed by a dyeing and finishing set using a setter to create a curing fabric.

The external quality and conductivity v(+, ft' of the obtained cloth)
I did the price. The results are shown in Table 1. Guide? ff,
In the case of the fabric of the present invention in which TK yarn was used for the warp interrogation structure, no warp-like defects were observed in the appearance, and the cloth had a uniform and good appearance quality. The electrical resistance value, which indicates conductivity, is also l.
X10'Ω, scratch, and showed good conductivity. However, 2hi111. At the same time #! In the case of the fabric of the second comparative example, uneven warp-like defects appeared on the appearance, giving an unsatisfactory appearance.
flT: The air resistance value is also 4×1υI8Ω, 1, and the thickness is 1
B11: was also unfavorable.

Table 1

Claims (1)

[Claims] (]) A bundle of conductive composite fibers containing particles of conductive tin oxide and/or other inorganic substances coated with conductive tin oxide and ordinary thermoplastic synthetic fibers. 1. A conductive tricot-covered fabric, characterized in that conductive threads are used in the transverse insertion structure of the tricot-covered fabric.