JPH105105A - Anti-static tufted pile fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-static tufted pile fabric by applying conductive yarn to primary backing without changing the flat cross-sectional shape of the tape yarn constituting the primary backing. SOLUTION: Tape yarn 16 and conductive yarn 17 are twined and bound by binding yarn 18, and the bound one is used for the weaving yarn of the primary backing of a tufted pile fabric. The binding yarn 18 is arranged so that the conductive yarn 17 can be exposed between pitches (L) of binding yarn 18 which occupies half the surface area of the weaving yarn or under and twines and binds them. Each size of the conductive yarn 17 and the binding yarn 18 is made one fifth the size (denier) of the tape yarn or under. In the case of twinning and binding them by the binding yarn 18, the conductive yarn 17 is slackened and annexed to the tape yarn 16 so that the length of the conductive yarn 17 in no tension condition where the weaving yarn is untwined may be longer than the length of the tape yarn 16. By doing it this way, even if the weaving yarn is tensed hardly in the weaving process of the primary cloth, it is avoided that the conductive yarn 17 breaks, being pulled following the elongation of the tape yarn 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tufted pile fabric used for carpets, dust control mats, tile carpets, vehicle floor coverings, electric heat carpet surface covers, bed covers, blankets and the like.

[0002]

2. Description of the Related Art Antistatic tufted pile fabric, that is,
In order to obtain a tufted pile fabric whose pile surface is less likely to carry static electricity during use, carbon fibers or metal fibers are mixed with the pile yarn, or the pile yarn and conductive yarn are twisted to control the pile yarn. Imparting the property, and furthermore, laminating a conductive fiber web on the primary base cloth, or using a nonwoven fabric mixed with conductive fibers for the primary base cloth, and further using a conductive filler such as carbon black or metal powder. A method of back coating the compounded backing agent on the tufted pile fabric has been adopted.

[0003]

SUMMARY OF THE INVENTION In a tufted pile fabric in which a pile is tufted on a primary base fabric woven using a polyolefin resin tape yarn or a polyester resin tape yarn as a weaving yarn, the tape yarn as the weaving yarn is used. It is desired to impart conductivity to the material.

[0004] For this purpose, a method of twisting the tape yarn and the conductive yarn is considered. However, the surface of the tape yarn is smooth and slippery, and the twist of the conductive yarn wound around the yarn is displaced, causing twist spots. In addition to this, the flat section of the tape yarn is deformed into a circular shape by twisting, and the tape yarn becomes hard, rigid and low in bulk, making it difficult for the needle to be inserted at the time of tufting. The stopping power is also reduced, and as a result, the characteristics of the primary base fabric using the tape yarn that the needle is inserted and the pile is caught and firmly locked in the vertically cracked crack when the needle is inserted are lost .

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to obtain an antistatic tufted pile fabric by applying a conductive yarn to the primary fabric without changing the flat cross-sectional shape of the tape yarn constituting the primary fabric. Aim.

[0006]

That is, the antistatic tufted pile cloth 21 according to the present invention comprises a warp 11 and a weft 12.
(Hereinafter, these weft yarns and warp yarns are collectively referred to as woven yarns.) In a tufted pile cloth 21 in which at least one of the woven yarns forms a tape yarn 16 as a primary base cloth 19, the primary base cloth 19 is used. A conductive yarn 17 is attached to at least a part of the constituting tape yarn 16,
The tape yarn 16 and the conductive yarn 17 form the binding yarn 1
8 and the tape yarn 16
Is less than 5 turns / m, the tape yarn 16 is substantially non-twisted, and the binding yarn 18 occupies less than half of the surface area of the woven yarns 11 and 12, and is wound and bound. Tying yarn 1
The first feature is that the conductive thread 17 is exposed between the eight pitches (L).

A second feature of the present invention is that, in addition to the first feature, the thickness of each of the conductive yarn 17 and the binding yarn 18 is less than one-fifth of the thickness of the tape yarn 16. Thread 11 ・ 12
Is that the yarn length of the tape yarn 16 in the tension-free state in which the yarn is unwound is shorter than the yarn length of the conductive yarn 17.

A third feature of the present invention is that, in addition to any one of the first and second features, the conductive yarn 17 includes one of a fibrous metal and a fibrous carbon. That is, a thermoplastic synthetic fiber filament yarn of 200 denier or less is used.

A fourth feature of the present invention is that, in addition to any one of the first, second and third features, the conductive yarn 17 has a length of 1 m.
The winding yarn 18 is wound around the tape yarn 16 with a number of twists of 30 or less, and the binding yarn 18 winds and binds the tape yarn 16 and the conductive yarn 17 with a twist number of 20 or more per m.

The fifth feature of the present invention is that the first, second,
In addition to any of the third and fourth features, the conductive yarn 17
Is wound around the tape yarn 16 while changing the twisting direction 27 alternately in the S twisting direction 24 and the Z twisting direction 25, and the number of twists in each of the S twisted portion 24 and the Z twisted portion 25 of the conductive yarn 17 is That is to be less than 30 times per meter.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The conductive thread 17 is made of stainless steel, copper or other fine metal wire, carbon fiber filament yarn, or copper sulfide described in Japanese Patent Application Laid-Open No. 8-35147 filed by the present applicant. A conductive binding yarn having an introduced cyano group, a conductive binding yarn that has been subjected to electroless metal plating, a conductive binding yarn that has been subjected to metal deposition, a metal foil yarn, or another material having carbon or metal is used.

The binding yarns 18 to be wound and bound are the yarns 11 and 12
The ratio of the area occupied by the surface to 50% (1/2) or less is set so that the conductive yarn 17 is exposed between the pitches L of the tied and tied binding yarn to exhibit antistatic properties. In order to For that purpose, for a tape yarn with a tape width of 0.5 to 4 mm used for a conventional primary base fabric,
When a monofilament yarn of nylon or polyester fiber having a thickness of 30 to 200 denier, preferably 40 to 80 denier, and more preferably around 50 denier (50 ± 5 denier) is wound as the binding yarn 18, the number of twists is 1 m. 20 to 100 turns (hereinafter, the number of twists per 1 m is referred to as “turns / m”), preferably 25 to 60 turns / m, more preferably around 30 turns / m (30 ± 5 turns / m).
m).

The reason why the thickness of the binding yarn 18 is set to be not more than one-fifth of the thickness of the tape yarn 16 is when the tape yarn 16 and the binding yarn 18 are twisted when the binding yarn 18 is wound. The tape yarn 16 is not wound around the binding yarn 18 and the tape yarn 16 is
In order to keep the flat cross-sectional shape before winding the binding yarn 18,
At the same time, the binding yarn 18 is strongly adhered to the surface of the straight continuous tape yarn 16 so as to bite,
This is because the conductive yarn 17 is strongly pressed against the surface of the tape yarn 16 by the binding yarn 18.

In this manner, the binding yarn 18 is connected to the tape yarn 16.
In order to make the tape yarn 16 tight, the binding yarn 18 is tensioned to pass the tape yarn 16 through the hollow spindle 22 which rotates together with the conductive yarn 17, and is pulled out from the hollow spindle 22 and is attached to the tape yarn 16 and the conductive yarn 17. 18 is wound, and the degree of tension of the binding yarn 18 when it is supplied to the hollow spindle 22 is determined by the length of the binding yarn 18 in a non-tension state where the weaving yarns 11 and 12 are released from tension by unwinding. The yarn length of the tape yarn 16 is substantially the same or slightly shorter.

That is, the binding yarn 18 in a tensioned and stretched state under tension is wound around the tape yarn 16. The stretched and tied binding yarn 18
When the yarns 11 and 12 are unwound and put in a non-tensioned state, the yarn shrinks and shortens by an amount corresponding to the stretching.
Therefore, in the state of the woven yarns 11 and 12 wound around the tape yarn 16 without being unwound, the binding yarn 18 comes into close contact with the tape yarn 16 due to the elastic contraction stress generated by stretching. Therefore, the binding yarn 18
It is recommended to use a thermoplastic synthetic fiber filament yarn such as nylon or polyester fiber of about 50 denier which is easily elastically changed in expansion and contraction.

The binding yarn 18 is more effectively used for the tape yarn 1.
6 so that the tape yarn 1
It is effective if the number of times of twisting to No. 6 is 20 times / m or more.

The length of the conductive yarn 17 is adjusted by the tape yarn 16
When the length of the yarn is longer than the length, the conductive yarn 17 is relaxed longer than the tape yarn 16 even if the yarns 11 and 12 are strongly tensioned in the weaving process of the primary base cloth 19 and the tape yarn 16 is elongated. The conductive yarn 17 is stretched by the length corresponding to the tape yarn 16 and no tension acts on the conductive yarn 17. Therefore, the conductive yarn 17 is not broken by the tension acting on the tape yarn 16, and the tufted pile fabric is efficiently woven.

The thickness of the conductive yarn 17 is adjusted by the tape yarn 16.
The thickness of the conductive thread 17 is not more than one-fifth because the antistatic effect of the conductive thread 17 does not depend on its thickness. Therefore, it is not necessary to make the conductive thread 17 particularly thick. If it is made thicker, it will be easily broken by the needle hitting at the time of tufting, and it will be difficult to loosen it and attach it to the tape yarn 16, and a strong frictional force will act between the tape yarn 16 and the binding yarn 18, This is because, when tension is applied to the yarn 16, the conductive yarn 17 is not easily displaced and moved in the length direction of the weaving yarns 11 and 12 on the surface of the tape yarn 16 by the amount of the slack, so that the yarn is easily broken.

In order to attach the conductive yarn 17 to the tape yarn 16 in a relaxed state, the conductive yarn 17 is passed through the hollow spindle 22 for winding and binding, or when ply-twisting with the tape yarn 16, The supply amount (delivery length) of the yarn 17 may be larger than that of the tape yarn 16.

In a simple manner, a twisting torque is generated in the conductive yarn 17 and the tape yarn 16 to align them, and the twisting direction (24) and the Z twisting direction (25) alternate with the twisting torque. Then, the conductive yarn 17 is entangled with the tape yarn 16. To generate the untwisting torque on the yarns 11 and 12 in such a manner, the tape yarn 16 is
In this case, a false twisting state is formed at the inlet side 30 and untwisting torque is generated at the outlet side 31 (FIG. 3).

Of course, the conductive yarn 17 is wound around a hollow spindle similarly to the binding yarn 18, and the conductive yarn 17 is drawn out while rotating the hollow spindle, and the tape yarn 16 and the conductive yarn are attached to the hollow spindle. 17, the conductive yarn 17 may be wound around the tape yarn 16. However, if the number of twists of the conductive yarn 17 entangled with the tape yarn 16 exceeds 30 turns / m, the conductive yarn 17 adheres strongly to the tape yarn 16 and the tape yarn 1
When a tension acts on 6, the tension also acts on the conductive thread 17 and is easily pulled and broken.

Accordingly, even when the tape yarn 16 is twisted alternately in the S twist direction (24) and the Z twist direction (25) by the untwisting torque, the conductive yarn 17 is also attached to the tape yarn 16 through the hollow spindle. Even in the case of winding, the number of twists of the conductive yarn 17 is set to 30 times / m or less.
In the case of entanglement alternately in the S twist direction (24) and the Z twist direction (25), the S twist portion 24 and the Z twist portion 25
Is 30 times / m or less. When the conductive yarn 17 is wound around the tape yarn 16 by passing the tape yarn 16 and the conductive yarn 17 through the hollow spindle, the twisting direction 27 of the conductive yarn 17 is opposite to the twisting direction 28 of the binding yarn. It is preferable that the strip 17 crosses the binding yarn 18 and is pressed by the tape yarn 16 (FIG. 2).

In the present invention, the phrase "the number of twists of the tape yarn 16 is 5 turns / m or less, and the tape yarn 16 is substantially non-twisted" means that the tape yarn 16 and the yarns 11 and 12 are unwound. In the above, the tape yarn 16 may be twisted about 5 times / m, which means that such twist is considered to be substantially non-twisted. Because, even with such a degree of twist, the cross-sectional shape of the flat tape yarn 16 does not change, and it is said that the needle is easy to be inserted into the primary base cloth during tufting, or that the pile is securely locked to the primary base cloth. The characteristics of the primary base fabric using the tape yarn 16 are not impaired, and such a degree of twist is inevitably generated in the winding process of the yarn, and the tape yarn of the conventional primary base fabric is also used. Because it can be seen.

In order to improve the slippage of the weft yarn 12 and facilitate the driving of the weft yarn 12 into the weave, it is preferable to use a synthetic fiber monofilament yarn having a smooth surface as the binding yarn 18. Tape yarn 1
6 is an ultrafine copper wire having a thickness (diameter in the case of a circular cross section) of 0.5 to 50 μm if the width is 0.5 to 4 mm, such as a tape yarn used for ordinary tufted pile fabric. Or a stainless wire can be used for the conductive thread 17.

A heat-fusible yarn is wound around the yarns 11 and 12 in addition to the binding yarn 18, whereby the binding yarn 18 and the conductive yarn 17 are securely fixed to the surface of the tape yarn 16. You can also. Of course, the heat-fusible yarn is used as the binding yarn 18.
In other words, the conductive yarn 17 and the tape yarn 16 can be wound and bound only with the heat-fusible yarn.

In the present invention, "the number of twists of the conductive yarn is 30 times / m or less" means that the number of twists is 0 times / m just by aligning the conductive yarn 17 with the tape yarn 16. In the case where the S-twisted portion and the Z-twisted portion of the conductive yarn are mixed in the weft 12, it means that the number of twists of each portion is 30 turns / m or less. If the number of twists in the S-twisted portion and the Z-twisted portion is the same, the number of twists of the conductive yarn in the whole ground weft 12 is 0 times / m.

A pile 20 having a conductive yarn 17 is used.
As in the case of No. 2, it can be used by twisting and binding to a normal pile yarn with the binding yarn 18. In order to make the conductive yarns 17 of the weaving yarns 11 and 12 contact the conductive yarns 17 of the pile 20 and to be easily electrically connected to each other, the weaving yarn with the conductive yarns 17 attached thereto 11 ・ 12 as the primary base cloth 19
It is good to use for the weft 12 of. Further, it is economical to apply the weaving yarns 11 and 12 to which the conductive yarns 17 are attached so that the yarns are arranged on the primary backing cloth at a ratio of one yarn per several normal non-conductive yarns.

On the back surface of the antistatic tufted pile fabric,
A backing agent containing carbon black or another conductive filler can be backed. The primary base cloth 19 according to the present invention can be attached to the back surface of the tufted pile cloth as a secondary base cloth.

[0029]

According to the present invention (claim 1), it is possible to impart antistatic property by applying a thin conductive yarn 17 to a tape yarn 16 which cannot be twisted with a thick, rigid and thin yarn. Done
Since the conductive yarn 17 attached to the surface of the tape yarn 16 is protected by the binding yarn 18 pressing the tape yarn 16 against the tape yarn 16, the conductive yarn 17 is rubbed with a shuttle or rapier guide during the weaving process of the primary base cloth 19. Even if broken, it becomes difficult to break.

The tape yarn 16 only has the conductive yarn 17 and the binding yarn 18 entangled with it,
Since the conductive yarn 17 and the binding yarn 18 are used, the cross-section thereof is not deformed and has a flat cross-sectional shape. Therefore, the primary fabric 19 of the present invention is likely to be longitudinally cracked by a needle hitting at the time of tufting. The characteristics of the primary fabric using the tape yarn, which is easy to insert into the fabric or that the pile is firmly locked to the primary fabric by being sandwiched between the vertically cracks 26, are not impaired (FIG. 1). ).

According to the present invention (claim 2), the binding yarn 18
As a result, the conductive yarn 17 is strongly locked to the tape yarn 16, and the conductive yarn 17 emerges or is scratched during the winding process of the weaving yarns 11 and 12 in preparation for weaving. Even if tension does not act on the tape yarn 16 during the weaving process of the primary base cloth 19,
The tape yarn 16 is stretched by following the tape yarn 16 by the amount of relaxation that is longer than the tape yarn 16, and the tension does not act on the conductive yarn 17, and the conductive yarn 17 is acted upon by the tension acting on the tape yarn 16. The antistatic tufted pile is formed by using an easily available ultrafine copper wire or stainless steel wire for the conductive thread 17 without breaking, and the weaving operation of the primary base cloth 19 is not hindered by the conductive thread 17. The fabric 21 can be obtained.

According to the present invention (claim 3), the binding yarn 18
Is stretched and twisted to form a conductive yarn 17 into a tape yarn 16.
The conductive yarn 17 can be made of an inexpensive and easily available ultrafine copper wire or stainless steel wire, so the antistatic tufted pile cloth 21 can be used efficiently and Obtained economically.

According to the present invention (claim 4), the conductive yarn 17 is not entangled with the tape yarn 16 and does not float on the surface of the weaving yarns 11 and 12. The conductive yarn 17 is not broken by rubbing the yarn 12 with a yarn guide or the like, and can follow the expansion and contraction of the tape yarn 16.

According to the present invention (claim 5), the yarn length of the conductive yarn 17 alternately twisted in the S twist direction (24) and the Z twist direction (25) is greater than the yarn length of the tape yarn 16. Since the conductive yarn 17 is entangled with the tape yarn 16 and is in close contact therewith, the primary base cloth 19 can be formed.
Even if the yarns 11 and 12 are rubbed or strongly strained in the weaving process, the primary base cloth 19 can be efficiently woven.

[Brief description of the drawings]

FIG. 1 is a perspective view of an antistatic tufted pile fabric according to the present invention.

FIG. 2 is a perspective view of a yarn according to the present invention.

FIG. 3 is a perspective view of a main part of a yarn manufacturing apparatus according to the present invention.

[Explanation of symbols]

 L pitch interval 11 warp (woven yarn) 12 weft (woven yarn) 16 tape yarn 17 conductive yarn 18 binding yarn 19 primary backing fabric 20 pile 21 antistatic tufted pile fabric 22 hollow spindle 23 exit side 24 S twist portion 25 Twisted portion 26 Split 27 Twisting direction of conductive yarn 28 Twisting direction of binding yarn 29 Rotating ring 30 Inlet side 31 Outlet side

Claims (5)

[Claims] A woven yarn (11, 12) of at least one of a warp (11) and a weft (12) is a tape yarn (1).
In the tufted pile fabric (21) using the woven fabric of (6) as the primary base fabric (19), at least a part of the tape yarn (16) constituting the primary base fabric (19) is attached to the conductive yarn (17). The tape yarn (16) and the conductive yarn (17) are twisted and bound by a binding yarn (18), and the tape yarn (16) is attached.
Is 5 turns / m or less, and the tape yarn (1
6) is substantially untwisted, and the binding yarn (18) is
The conductive yarn (17) occupies a half or less of the surface area of (1) and (12), and is exposed between the pitches (L) of the binding yarns (18) being twisted and bound. Antistatic tufted pile fabric. 2. The conductive yarn (1) according to claim 1,
7) and each thickness of the binding yarn (18) is a tape yarn (16).
The yarn length of the tape yarn (16) in the tensionless state where the woven yarns (11 and 12) are unwound is shorter than the yarn length of the conductive yarn (17). The antistatic tufted pile fabric according to claim 1, characterized in that: 3. The conductive yarn (1) according to claim 2,
7. The method according to claim 1, wherein 7) comprises one of fibrous metal and fibrous carbon, and the binding yarn (18) is a thermoplastic synthetic fiber filament yarn of 200 denier or less.
3. The antistatic tufted pile fabric according to 1. 4. The conductive yarn (1) according to claim 1,
7) is wound around the tape yarn (16) with a number of twists of 30 or less per meter, and the binding yarn (18) is
tape yarn with a number of twists of 20 or more per m
6. The antistatic tufted pile fabric according to claim 1, wherein the conductive yarn (17) and the conductive yarn (17) are twisted and bound. 5. The conductive yarn (1) according to claim 1,
7) is wound around the tape yarn (16) with the twist direction (27) changed alternately in the S twist direction (24) and the Z twist direction (25), and the S twist portion ( 2
4) and the number of twists of each part of the Z twist part (25) is 3 per meter.
The antistatic tufted pile fabric according to claim 1, wherein the number is zero or less.