JP3049356B1 - Antistatic woven carpet - Google Patents

Abstract

[PROBLEMS] To develop a conductive yarn which can be used as a ground warp without breaking even if a strong tension acts in a weaving process or is strongly rubbed in an opening movement, and using the yarn, an antistatic property is used. Obtain excellent woven carpet. SOLUTION: A base fabric 16 is formed by being entangled with a weft yarn 19,
The warp 15 is bent between the pile surface and the back surface in a wave shape.
Is constituted by a twisted yarn of the conductive yarn 17A and the non-conductive yarn 18A. The conductive yarn 17A has one cyano group into which copper sulfide has been introduced, and has a specific electrical resistivity of 1 Ωm or less. The other non-conductive yarn 18A of the plied yarn is constituted by a plurality of non-conductive spun single yarns 21A, 21B, 21C mainly composed of cellulosic short fibers. The thickness (count) of the conductive synthetic fiber spun single yarn (17A) is smaller than that of the non-conductive spun single yarn 21, and the elongation at the time of cutting the conductive yarn 17A is smaller than that of the non-conductive yarn 18A. And the tensile strength of the conductive yarn 17A at the time of cutting is made weaker than that of the non-conductive yarn 18A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to woven carpets, namely Wilton carpets and akisminster carpets.

[0002]

2. Description of the Related Art As a method of obtaining an antistatic woven carpet, that is, a woven carpet whose pile surface is less likely to be charged with static electricity during use, a carbon fiber or a metal fiber is mixed with pile yarn or ground yarn to impart conductivity. In addition, a method of imparting a conductive material such as carbon or metal to fibers constituting pile yarn or ground yarn is known.

[0003]

A warp yarn such as a pile yarn, a 〆 warp yarn or a cover warp yarn always has a strong tension.
The shedding motion causes the shed to move up and down together with the heald, so that the shed is easily broken because a strong tension acts on the shedding motion and beating. Therefore, the inventor of the present invention adopts a conductive yarn as a weft to which a tension is not always applied without being worn together with a shuttle introduced into an opening between warps which are widely opened in a weaving process, and hinders the weaving efficiency of a woven carpet. Invented a method of weaving conductive yarn without
It is disclosed in JP-A-8-35147 and JP-A-10-5104. However, in order to obtain an even better antistatic woven carpet, it is desirable to use a conductive yarn not only for the weft but also for the warp, but as described above, unlike the weft, the warp is used in the weaving process. As a practical matter, it is extremely difficult to use a conductive yarn for warp without being constantly rubbed and being easily applied with strong tension and being easily cut without impairing the weaving efficiency of the woven carpet.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has developed a conductive yarn which can be used as a ground warp without breaking even if a strong tension acts in the weaving process or strong rubbing in the shedding motion. An object of the present invention is to provide a woven carpet having excellent electrical properties.

[0005]

According to the present invention, there is provided an antistatic woven carpet according to the present invention. (A) A base fabric 16 is formed by entanglement with a weft yarn 19, and is bent in a wave shape between the pile surface and the back surface. 〆 The warp yarn 15 is constituted by a twisted yarn of a conductive yarn 17A and a non-conductive yarn 18A. (B) The conductive yarn 17A to be twisted is formed by a cyano group into which copper sulfide is introduced. (C) the other non-conductive yarn 18A to be ply-twisted is a non-conductive yarn mainly composed of cellulosic short fibers. A plurality of conductive spun single yarns 21A, 21B, 21C,
(D) The thickness (count) of the conductive synthetic fiber spun single yarn (17A) is smaller than that of the non-conductive spun single yarn 21;
The elongation of the conductive yarn 17A at the time of cutting is determined by the non-conductive yarn 18.
A, and (f) a conductive yarn 1
The first feature is that the tensile strength at the time of cutting 7A is made weaker than that of non-conductive yarn 18A.

A second feature of the antistatic woven carpet according to the present invention is that, in addition to the first feature, the weft yarn 19 entangled with the warp yarn 15 to form the base fabric 16 is replaced with a conductive yarn 17B. And a non-conductive yarn 18B. The conductive yarn 17B has a cyano group into which copper sulfide is introduced, and has a specific electrical resistance of 1 Ωm or less. The other non-conductive yarn 18B is a plurality of non-conductive spun single yarns 22A and 22B mainly composed of hemp fibers, and the thickness of the conductive synthetic fiber single yarn (17B) (count
(Denier) is made thinner than the non-conductive spun single yarn 22.

A third feature of the antistatic woven carpet according to the present invention is that, in addition to the first feature, a weft yarn 19 entangled with the warp yarn 15 to form the base fabric 16 is mainly made of hemp fiber. A non-conductive spun yarn 18C and a conductive yarn 17C are formed by binding yarns which are twisted and bound by a synthetic fiber yarn 20, and the synthetic fiber yarn 20 occupies less than half of the surface area of the weft 19. The conductive yarn 17 </ b> C is exposed between the pitches of the synthetic fiber yarns 20 tied and wound.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A conductive synthetic fiber spun single yarn (17A) or a conductive synthetic fiber single yarn (17B) having a cyano group into which copper sulfide is introduced and having an electric resistivity of 1 Ωm or less is made of acrylic. In the fiber, copper sulfide is introduced into the cyano group of the fiber,
In addition, polyester fibers and nylons having no cyano group are produced by introducing a cyano group into the introduced cyano group and introducing copper sulfide into the introduced cyano group. The method of introducing copper sulfide is described in JP-B-62-52071. , Tokiko 63-1411
No. 2, JP-B-63-19629, JP-B-63-478
No. 24 and JP-B1-37513, which are well known.

(1) The conductive yarn 17A of the warp 15 is a single conductive synthetic fiber spun single yarn, and the nonconductive yarn 18A to be twisted therewith is a nonconductive spun single yarn mainly composed of cellulosic short fibers. The conductive synthetic fiber spun single yarn (17A) is made thinner (counter) than the non-conductive spun single yarn 21 so as to reduce the elongation at the time of cutting the conductive yarn 17A. Larger than that of the non-conductive yarn 18A, and
The tensile strength of the conductive yarn 17A at the time of cutting is determined by the non-conductive yarn 1
The reason for making it weaker than 8A is to reinforce the conductive yarn with the non-conductive yarn used as the warp of the conventional woven carpet and to introduce the conductive yarn into the base fabric of the woven carpet without breaking. is there. In other words, when the non-conductive yarn breaks during the weaving process, the non-conductive yarn having a lower elongation rate at the time of cutting will also break, and the breaking of the non-conductive yarn will occur. It is said that only the non-conductive yarn is woven as warp while the conductive yarn is broken, and the non-static fabric that the conductive yarn is not woven is woven. That is avoided.

A conductive yarn 17B-1 used for the weft 19
7C is not limited to a conductive synthetic fiber spun single yarn (17A) into which copper sulfide is introduced, and is a conductive synthetic fiber single yarn (including synthetic fiber monofilament yarn and synthetic fiber multifilament yarn into which copper sulfide is introduced). 17B) can be used (claim 2).

A nonconductive spun yarn 1 mainly composed of hemp fiber
The conductive yarn 17C used as the weft 19 after being twisted and bound to the 8C with the synthetic fiber yarn 20 is a stainless steel, copper or other ultrafine metal wire, a carbon fiber filament yarn, or an electroless metal-plated conductive synthetic material. It is possible to use all of those having carbon or metal, such as fiber yarn, conductive synthetic fiber yarn on which metal deposition has been performed, and metal foil yarn.

The reason and effect of using all of the conductive synthetic fiber single yarns into which copper sulfide is introduced as the conductive yarn 17B used for the weft 19 are described in Japanese Patent Application Laid-Open No. H8-208, filed by the present inventor. -35147.
The reason and effect of using not only copper sulfide-introduced conductive yarn but also carbon or metal-containing conductive yarn as the conductive yarn used for the weft 19 are disclosed in Japanese Patent Application Laid-Open No. No. 5104.

(3) The elongation at the time of cutting the conductive yarn 17A of the warp 15 is made larger than that of the non-conductive yarn 18A,
Further, in order to make the tensile strength of the conductive yarn 17A at the time of cutting weaker than that of the non-conductive yarn 18A, (1) the conductive yarn 1
Use synthetic fibers for 7A, and use cellulose-based short fibers that are less stretchable than synthetic fibers for non-conductive yarn 18A.
(2) The synthetic fibers of the conductive yarn 17A are spun single yarns of discontinuous short fibers, and (3) the number of the spun single yarns of the conductive yarn 17A is the number of the spun single yarns 21 of the non-conductive yarn 18A. (4) The thickness (count) of the spun single yarn of the conductive yarn 17A is set to be smaller than that of the non-conductive yarn 18A.
Thinner than

More specifically, 1/30 to 1/30 of the acrylic fiber, polyester fiber or nylon into which copper sulfide is introduced.
One conductive synthetic fiber spun single yarn of No. 80 (17A),
1/10 of cotton or rayon blend rate of 60% or more
3 to 5 non-conductive spun yarns of 1 / 30th count (21A · 2
1B and 21C) are twisted and used as the conductive warp yarn 15. As a specific example, 1 / 64-count conductive polyester fiber spun single yarn 1 having an elongation at the time of cutting with copper sulfide introduced of 11.7% and a tensile strength at the time of cutting of 269 g.
1 / 30th non-conductive rayon blended with a book, 70% rayon and 30% polyester fiber with a blending ratio of 5.7% and an elongation of 627 g when cut.・ Three polyester fiber blended single yarns (3
The elongation at the time of cutting of the plying yarn of (/ 30 count) was 7.6%, and the tensile strength at the time of cutting was 670 g.
In the weaving process, warp breakage did not occur, and the antistatic woven carpet 11 could be woven efficiently.

[0015]

The warp yarn 1 thus constructed according to the present invention.
When No. 5 is used, warp breakage does not occur in the weaving process, and the conductive yarn 17A mixed with the warp 15 is not broken, and the conductive yarn 17A is continuously formed in the warp direction and has antistatic properties. Certain woven carpets are woven efficiently. The reason is as follows.

(1) The elongation at the time of cutting of the conductive yarn 17A is larger than that of the non-conductive yarn 18A, and the tensile strength at the time of cutting of the conductive yarn 17A is higher than that of the non-conductive yarn 18A. When the conductive yarn 17A is stretched and broken, the non-conductive yarn 18A having a lower elongation rate is also broken, and the conductive yarn 17A is broken by a warp 1
Detected as 5 thread breaks. Therefore, the conductive yarn 1
There is no weaving of the discontinuous base cloth 16 due to the breakage of 7A.

(2) The elongation of the conductive yarn 17A at the time of cutting is higher than that of the non-conductive yarn 18A, and the tensile strength at the time of cutting of the conductive yarn 17A is higher than that of the non-conductive yarn 18A. As it is weak, the tension that acts in the weaving process is
It is absorbed by the non-conductive yarn 18A which is thick and hard to stretch, and does not act so much on the conductive yarn 17A which is thin and easy to stretch. For this reason,
Conductive yarn 17A by tension in weaving process
Does not break.

(3) The conductive yarn 17A is a synthetic fiber which is more easily stretched than the cellulosic fiber, and one single yarn thereof and a plurality of cellulosic short fiber spun single yarns 21A, 21B, 2
1C, and the cellulose-based short fiber spun single yarn 21 is thicker than the conductive synthetic fiber spun single yarn (17A).
Then, the tension applied in the twisting process is applied to the conductive yarn 1
7A and acts as internal shrinkage stress, so that the conductive yarn 17A does not separate from the non-conductive yarn 18A (cellulose short fiber spun single yarn 21). The conductive yarn 17A is a non-conductive yarn 18
A, because it is always in close contact with A, it does not rub against adjacent warp 15, pile yarn 12, or cover warp 14 in the weaving process, or rubs against a heald or reed, frays, wears, and breaks. It does not mean that weaving efficiency of the woven carpet is impaired by using the strip 17A for the warp yarn 15.

(4) The conductive yarn 17A and the non-conductive yarn 18A are both spun yarns that are aggregates of short fibers,
The warp yarns 15 are conjugated to each other and twisted in a single yarn having a surface fluff to form a warp 15. The conductive yarn 17A is thin, the number thereof is one, and the number thereof is large. The conductive yarn 17A is closely attached to the non-conductive spun single yarns 21A, 21B, and 21C, which have a large amount, so as to hold the conductive yarn 17A. Even from this point, the conductive yarn 17A does not loosen on the surface of the warp 15, does not break due to fuzzing wear in the weaving process, and does not impair the weaving efficiency of the woven carpet.

(5) The conductive yarn 17A is composed of a synthetic fiber which is more easily stretched than the non-conductive yarn 18A of the cellulosic short fiber, and the conductive yarn 17A is also short-cut as a spun single yarn. It is composed of short fibers made, therefore, the tension does not work long and continuously like the filament yarn, and the short fibers are only displaced by the tension, and the individual short fibers are not greatly extended, The short fiber breaks under strong tension, and it does not fluff and become entangled like a pill, and it does not say that the pill is caught by a heald or a reed and causes thread breakage, and it is conductive yarn. 17A does not impair the weaving efficiency of the woven carpet.

The conductive synthetic fiber used for the weft yarn 19 in the present invention (claim 2) is made of ordinary synthetic fiber such as acrylic fiber, polyester fiber, nylon or the like, into which copper sulfide is introduced, and has elasticity. , Familiar with ordinary fibers,
Hard to fall off during spinning or weaving. In particular, the hemp fiber constituting the weft 19 is a fiber that is rigid, has a large fineness, and is difficult to expand and contract as compared with the synthetic fiber, and the non-conductive hemp fiber spun single yarns 22A and 22B that are thick and have low elasticity are used. When the conductive yarn 17B of synthetic fiber is twisted, the conductive yarn 17B is not twisted and the non-conductive hemp fiber spun single yarn 22A
B is plied and twisted, and the conductive yarn 17B is protected by being fitted between a plurality of non-conductive hemp fiber spun single yarns 22A and 22B. Never fall off.

According to the present invention (claim 3), the conductive yarn 17C attached to the surface of the non-conductive spun yarn 18C mainly composed of hemp fibers presses the non-conductive spun yarn 18C against the non-conductive spun yarn 18C. Since it is covered with the synthetic fiber thread 20 and protected, it is difficult to break even if it is rubbed with a shuttle or a rapier guide in the weaving process.

The weft 1 according to the present invention (claim 3)
In No. 2, as in the case of the weft according to JP-A-8-35147,
The non-conductive spun yarn 18 mainly composed of hemp fibers is not used to protect the conductive yarn by being sandwiched between single hemp fiber yarns.
A conductive yarn 17C is wound and bound to one non-conductive spun yarn 18C with a synthetic fiber yarn 20 much smaller than C. For this reason, the weft 19 according to the present invention is disclosed in Japanese Patent Application Laid-Open No. 8-35514.
It is thinner than the ground weft according to No. 7, whereby the dense antistatic woven carpet 11 can be obtained.

In the same manner as in the case of the warp yarn 15,
The conductive yarn 17A can also be used for the pile warp 12 and the pile warp 12. The conductive warp 15 obtained by twisting the conductive yarn 17A does not need to be used for all the warp yarns, and the conductive warp yarns 15 are used at a rate of one for a plurality of non-conductive warp yarns.
It is enough to use.

[0025]

As described above, according to the present invention (claim 1), the use of the conductive yarn 17A for the warp 15 does not impair the weaving efficiency, and the weaving efficiency is long and continuous in the warp direction. In addition, since the pile surface and the back surface are bent in a wavy shape and have a grounding effect of transmitting the static electricity on the pile surface to the ground, a highly antistatic woven carpet can be obtained.

According to the present invention (claims 2 and 3), JP-A-8-35147 and JP-A-10-510 are disclosed.
No. 4 conductive weft (17B / 17)
C) and the conductive wefts (17B and 17C) are electrically connected by the conductive warp yarns 15, so that a more excellent antistatic woven carpet can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of an antistatic woven carpet according to the present invention.

FIG. 2 is a perspective view of a warp of the antistatic woven carpet according to the present invention.

FIG. 3 is a perspective view of a weft of the antistatic woven carpet according to the present invention.

FIG. 4 is a perspective view of the weft of the antistatic woven carpet according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 Woven carpet 12 Pile warp 14 Cover warp 15 〆 Warp 16 Base fabric 17A Conductive yarn (conductive synthetic fiber spun single yarn) 17B Conductive yarn (conductive synthetic fiber single yarn) 17C Conductive yarn 18A Non-conductive Non-conductive yarn 18B Non-conductive yarn 18C Non-conductive spun yarn 19 Weft 20 Synthetic fiber yarn 21 Non-conductive spun single yarn 22 Non-conductive spun single yarn

Continuation of front page (58) Fields investigated (Int. Cl. ⁷ , DB name) A47G 27/02 D02G 3/04 D02G 3/44 D03D 1/00-27/18

Claims (3)

(57) [Claims] (A) a base fabric (1) entangled with a weft (19);
6) is formed, and the warp (15) is bent in a wave shape between the pile surface and the back surface, and the warp (15) is constituted by a twisted yarn of the conductive yarn (17A) and the non-conductive yarn (18A). And
(B) The conductive yarn (17A) of the twisted yarn has a cyano group into which copper sulfide has been introduced, and has an electric resistivity of 1 Ωm.
One of the following conductive synthetic fiber spun single yarns, (c)
The other non-conductive yarn (18A) of the ply-twisted yarn is composed of a plurality of non-conductive spun single yarns (2
(D) the thickness (count) of the conductive synthetic fiber spun single yarn (17A) is thinner than the non-conductive spun single yarn (21), and (e) the conductive yarn ( 17
The elongation at the time of cutting of A) is larger than that of the non-conductive yarn (18A), and (f) The conductive yarn (17A)
Characterized in that the tensile strength at the time of cutting is weaker than the tensile strength at the time of cutting the non-conductive yarn (18A). 2. The antistatic woven carpet according to claim 1, wherein the weft (19) constituting the base fabric (16) intertwined with the warp (15) is combined with the conductive yarn (17B). The conductive synthetic fiber (17B) has a cyano group into which copper sulfide is introduced, and has a specific electrical resistance of 1 Ωm or less. Thread 1
And a plurality of non-conductive spun single yarns (22A and 22B) mainly composed of hemp fiber and the other non-conductive yarn (18B)
2. The antistatic fabric according to claim 1, wherein the conductive synthetic fiber single yarn (17B) has a thickness (counter / denier) smaller than that of the nonconductive spun single yarn (22). carpet. 3. The anti-static woven carpet according to claim 1, wherein the weft (19) constituting the base fabric (16) intertwined with the warp (15) is a non-woven fabric mainly composed of hemp fibers. The electrically conductive spun yarn (18C) and the electrically conductive yarn (17C) are formed by a binding yarn that is twisted and bound by a synthetic fiber yarn (20), and the synthetic fiber yarn (20) has a surface area of the weft (19). The conductive yarn (17C) is exposed between the pitches of the synthetic fiber yarn (20) that is occupied by less than half, and is wound and bound. Antistatic woven carpet.