JPS61132650A - Supported antistatic treated yarn - 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 Background of the Invention The present invention relates to antistatic treated yarn as a raw material. The invention particularly provides that the strands contain free carbon (i.e.
The present invention relates to a raw material which is an impregnated strand impregnated with conductive carpin black particles. This impregnated strand V can be used as an antistatic treated fiber material. More specifically, the present invention relates to antistatically treated rock fiber yarns supported by adhering to supporting yarns (reinforcing yarns) by solvent bonding.

Description of the Prior Art There are several US patents in the technical field to which the present invention pertains. However, these patents do not disclose or suggest the methods or products of the present invention. The closest prior art to the present invention is U.S. Pat. No. 4,255,487, U.S. Pat.
No. 4.107.9 F 4, No. 3,945,186, No. 3,206.923 and No. 3.291,897
For example, the technique described in the specification of the No. The relationship between the technology of these US patents and the present invention is explained in the following paragraphs.

U.S. Patent Nos. 4.225,487 and 3.823.
No. 035 (5anders) discloses that conductive carbon plaque particles are coated with a polymeric substrate (5anders).
s) is disclosed. These 5
The Anders patent is not directed to a method of reinforcing conductive strands r with non-conductive strands V. However, the 5anders patent discloses technology that has some relevance to the present invention.

The invention relates to an improvement of the patent of 5anders, in which processing operations such as warping, spinning, knitting, etc. are performed immediately after the lightning conductive strand V. In the present invention, 5eLn
In addition to the steps described in both d@rS patents, it is necessary to provide additional steps.

U.S. Pat. No. 3,657,591 discloses a nonwoven fabric bonded with an acid. The method of this patent involves contacting a nonwoven fabric containing a mixture of staple fibers with the beak to soften the content of certain types of fibers in the mixture, and then pressing the mixture to tighten the fibers. Glue the whole thing together. In contrast, the present invention does not include a pressing step for adhesion.

It is something.

U.S. Pat. No. 4,107,914 discloses a method for making untwisted staple yarns by bonding staple fibers by a solvent bonding operation. This US Pat. No. 4,107,914 differs from the present invention in the following points. That is, in the method for manufacturing a supported antistatic treated yarn according to the Wood invention, a solvent is attached only to the single fiber substrate (not attached to the supporting yarn), and then (
・The operation of pressing the base body and the supporting thread together is performed. In contrast, in the method of the above-mentioned U.S. Pat. According to the present invention, it has been found that when a solvent is applied to only one of the yarns, both yarns can be reliably bonded even at 0.degree.

U.S. Pat. No. 3,291,897 and No. 206.
No. 923 only discloses twisted yarns that are not very similar to the yarns of the present invention. These twisted yarns are
This invention has a completely different type of feature from the effects of the present invention.

DESCRIPTION OF THE INVENTION The present invention relates to a solvent-adhesive antistatic treated thread supported by a support thread, a method for producing the same, and a product obtained by the method. In the method described in Specification 1, this product requires an operation in which the fiber strands are placed on a raised surface, such as the surface of a heating drum, and then heated and bonded. On the other hand, i: In the invention method, a conductive mix (conductive composition) is attached to a single fiber as a substrate, and while this single fiber is moistened with the mix, it is exposed to the atmosphere and other than the supporting yarn. Avoid letting it come into contact with anything. If the wet chick strands come into contact with other objects (such as guides or drums), the conductive mix will adhere to and accumulate on these objects. If the yarn comes into contact with an item in which such mix has accumulated, the yarn will become soiled, ie, the yarn and/or the package will become seriously defective.

U.S. Pat. No. 3,945,186 discloses a non-twisting method characterized in that after adding continuous threads to a staple fiber material, the threads are bonded together by adding heated acid. A method of making (or low flammability) staple camphor yarn is disclosed. This U.S. Patent No. 3,9
The method of No. 45,186 is an antistatic treated yarn that is intermittently attached to a supporting yarn at multiple locations. Surprisingly, according to the invention, the antistatically treated yarn can be bonded intermittently to the support yarn at multiple locations, and this gluing operation does not require the attachment of the antistatically treated yarn and the support yarn together, as in the prior art. It has been found that this can be carried out without the use of pressure means. Furthermore, it has surprisingly been found that in the method of the present invention, it is necessary to keep the strands V in an undried mulberry state from coming into contact with objects other than the support threads (for example, guide members).

The purpose of the invention is to perform solvent bonding of two threads to create a supported thread.

Another object of the present invention is to adhere antistatic treated yarns to non-conductive support yarns by solvent bonding. Yet another object of the present invention is to provide a supported antistatically treated yarn that provides excellent handling during processing operations such as warping, spinning, and cutting operations.

Yet another object of the present invention is to provide a more economical antistatic treated fabric.

A further object of the present invention is to provide a method for producing supported antistatic treated yarns from two non-conductive, unbonded yarns in one step.

Yet another object of the invention is to solvent bond two yarns without substantially reducing their strength equal to the sum of their respective strengths to produce supported antistatic treated yarns. The goal is to provide a method to do so.

Detailed Description of Preferred Embodiments FIG. 1 is a schematic illustration of the most preferred embodiment of the method of the present invention.

, the yarn 2 is pulled out from the first system winding shaft 1 on which the second system 2 is wound and passed through the conductive mix applicator 3. Thread 2
is most preferably a nylon-6 monofilament yarn. The conductive mix applicator 3 is a container (containing the conductive mix) as shown in the drawing.
The container has an artificial orifice and an exit orifice, through which the thread enters the container through the entrance orifice and exits through the exit orifice. Both orifices are sized slightly larger than the diameter of thread 2. A controlled amount of the conductive mix is deposited on the thread 2 in this container and the thread emerges from the container. This mix is
Most preferred is formic acid containing nylon-6 polymer in a dissolved state and conductive casen black particles in a dispersed state. This thread is pulled from the first system winding shaft 1 by a pair of rollers 4, unwound at 0.degree. C., and moved, and the surface speed of each roller is set to about 700 m/min. After passing through the applicator 3, the second system 2 passes through the evaporation tube 5.
to go into. When the first system 2 with the mix on its surface enters the evaporation tube 5, a second thread 6 is fed near the 7. The second yarn 6 is most preferably a nylon-6 multi-thread yarn (multi-thread).

The second yarn is supplied from the second winding shaft T. In order to properly control the downward movement of the second thread 6, the second thread 6 is
Most preferably, the Bern-type guide member 9 is moved in the "ca" direction. The second thread 6 is then moved close to the second system 2 by passing through the guide member 8 above the inlet of the evaporator tube 6. The guide The member 8 serves to bind the second thread 6 at its near point,
This rod near point changes the traveling direction of the second thread 6, that is, at a position immediately below the guide member 8, the traveling direction of the second thread 6 and the traveling direction of the second system 2 become substantially parallel. Become.

The speed of both threads 2 and 6 is controlled by rollers 4.

Both threads 2 and 6 travel at the same speed.

When the second thread 6 passes through the guide member 8, the second thread 6 is positioned between the guide member 8 and the second system 2. Then, the arrangement position of the guide member 8 is determined so that the distance between the second thread 2 and the second thread 6 becomes the distance of the row 3 at the position where the second thread 6 contacts the guide member 8. , it is most preferable that the first system 2 touches the second thread 6 at the guide member 8 (i.e., it is most preferable that said distance is Ow). However, it is preferred that the path of the second system 2 is not substantially bent by the guide member and the second or support thread. Series 2
The second threads 6 pass through the evaporation tube 5 in close proximity to each other. If the distance between these two threads 2 and 6 is maintained at about 3*tn at guide member 8, these two threads 2 and 6 will come together at a position slightly downstream from guide member 8. was discovered. The second yarn is a hybrid yarn (in, te
most preferably rlaced yn, rn).

When the yarns 2 and 6 enter the evaporation tube 5, they are exposed to a countercurrent (approximately 600 m/min) of hot air (most preferably 150° C.). This hot air enters the evaporator tube 5 through an inlet 15, passes through the evaporator tube and exits through its outlet 10. As is clear from the break line 11 shown in the drawing, the evaporator tube 5 must be quite long compared to the length of the rest of the device. Most preferably, the distance from the first winding shaft 1 to the evaporator tube 50 is about 17 FL, and the length of the evaporator tube 5 is about 10 m.
The distance from the outlet of the evaporation tube 5 to the thread winding shaft 12 for winding the thread is about 2 m.

After the first threads 2 and 6 have come into close proximity to each other at the position of the guide member 8, the first thread 2 and the second thread 6 often contact each other during their progress, and at these points of contact, the first thread 2 and the second thread 6 are brought into close proximity to each other at the position of the guide member 8. The mix [the mix attached to the second system 2 in the applicator 3] is attached to the second thread 6. As threads 2 and 6 pass together through evaporator tube 5, the mix spreads sufficiently into both threads to intermittently form solvent bonds at the contact points.
ing) is formed. Therefore, when these threads exit the downstream end of the evaporator tube 5, the bath agent bond formed at the contact point of both threads 2 and 6 [formed while in the evaporator tube 5] These yarns are integrated by the above-described method, and a fully supported antistatic treated yarn 13 is formed. The thread 13 passes through the thread speed control roller 4 and then the big till type guide member 14 to the trowel coming out from the downstream end of the evaporation tube 5, and then the thread 13 is wound around the bobbin shaft 12. It will be done. The yarn 13 wound on the winding shaft 12 is a seven-piece cage of supported antistatic treated yarn.

FIG. 2 is an explanatory diagram illustrating another specific example of the method of the present invention. The method shown in FIG. 1 is for the production of "parallel state" carrier-backed antistatic treated yarns. Here, "parallel state" (5 side-by-side) means that the first system 2 and the second thread 6 travel downstream of the guide member 8 in a simple parallel section.

However, in the method shown in FIG. 2, the second system 2 passes through the hollow second winding shaft 7 and advances in the longitudinal direction.

The second system 2 passes through a mix applicator 3 before passing through the second winding shaft T. Passage of the second bobbin shaft T vkK
, the second system 2 passes through the central part to the balloon-shaped guide member 8 . The second thread 6 is unwound from the second winding shaft 7 and also advances past the balloon-shaped guide member 8A. The traveling path of the second thread 2 is set so that it passes through the center of the guide member 8A, while the second thread 6 passes through the center of the guide member 8A.
It always passes over the inner surface of A. That is, in the method shown in FIG. 2, the support yarn 6 is loosely inserted around the antistatic treated yarn 2 to form a plied yarn.

The method described in FIG.
rocess). Following this method, supported antistatic treated yarns in the form of plied yarns are obtained. Most preferably, the inner diameter to the balloon-shaped guide member 8 is 4u.

This guide member 8A is different from the guide member 8 shown in FIG.
The shape is as follows. In the method shown in FIG. 2, a balloon-type guide member is required, whereas in the method shown in FIG.
Any guide member capable of guiding the second yarn 6 can be installed at any location on the path of the second system 2. In points other than the above, the second
The illustrated method does not differ substantially from the preferred method described in FIG.

The method shown in FIG. 1 is preferred for the following reasons. That is, stringing up is relatively easy and it is convenient to use a transfer tail on the second thread 6.
This cannot be obtained in the specific example shown in the figure.

FIG. 3 is an enlarged view of a part of the yarn, which is a product obtained according to the present invention. That is, FIG. 31 is a drawing showing a part of the supported conductor 07613. To simplify the description, some of the non-fb, tetramorphic strands r constituting the support yarn are omitted. In FIG. 3, antistatically treated single iron yarn 31 is connected to six non-conductive single filament yarns 34.
is shown in combination to form a supported thread 13.

The figure shows a state in which the antistatic treated fibers 31 are bonded to the non-conductive fibers 34 with a solvent at two solvent bonded portions 32.

FIG. 4 is an enlarged detailed view of the solvent adhesive portion 32 in FIG. 3. As is clear from Fig. 4, antistatic treated single fiber 3
The mix above 1 is transferred and spread onto the non-conductive fibers 34 in the bath agent adhesive portion 32, and as a result, the antistatically treated lane strips 31 are bonded to the non-conductive fibers 34 by the adhesive force of the solvent.

FIG. 5 is a sectional view of the filament shown in FIG. 4, and more specifically, a sectional view taken along line C-CK16 in FIG. 4. The outer area 36 of the antistatic treated fiber 31 is coated and the inner area 35 is filled area (5uff
used region). The antistatic treated fibers 31 are adhered to non-conductive fibers (supporting fibers) 34 with a solvent and heated at 30°C. Part of the outer area of the supporting fibers 3°4 is covered area 3
8, and part of the internal area is filled area 37
These areas 38 and 37 constitute the aforesaid bond. There is an interface reg between the antistatic treated fibers 31 and the non-conductive jets 34.
ion ) 39 appears to exist. Additionally, interface area 39 appears to be similar to overturned external areas 3B and 36.

The method of the present invention comprises contacting the support yarn with the filamentous substrate after the filamentous substrate has been coated with the solvent-containing conductive mix, but before the solvent has substantially evaporated from the mixture. is a necessary condition. For example, at the guide member 8 the support thread can be brought close to the wet strip-shaped substrate (i.e. with a distance of less than 3 mm between them), so that the two threads come into contact in a timely manner and the solvent Adhesive part (
fusion points] are formed at appropriate intervals (that is, at an appropriate frequency). It is also an essential condition that the fibrous substrate support yarn moistened with the mix should come into contact with only the atmosphere. This will cause the mix to accumulate at the thread contacts and the final mix to be transferred to and carried by the substrate and support threads. This (on the other hand,
The fairly large size of the tux buildup resulting from the buildup of the mix probably contains a fairly large amount of solvent, which therefore does not dry out in the evaporation tube and can be used with the same number of turns of yarn in a single yarn package. It will fuse to the parts (vyindiHs), contaminate the rest of the yarn in the shoe cage, and give a bad impression to the next person who uses this yarn.

EXAMPLE An electrically conductive mix applicator was made with a first pipe having a length of 55n and an internal diameter IDm. This first pipe was vertically tropically fixed at °C. From part 111, a second pipe was connected to the center of the first pipe. An on-off valve was installed on the second pipe, but the location was a little away from where the second pipe touched the first pipe. This on-off valve was closed.

The second pipe was connected to a pressurized source of conductive mix.

21! L jewel bearings A, M, Gatti C524
Tindall.

Vanue, Trenton, N.J* (USA)], each of these jewel bearings had an outside diameter of 1.5 mm and had a 75 micron diameter orifice in the center; The thickness was 0.5 vat. These bearings were mounted on a stainless steel disc with a diameter of 13 mm and a thickness of k 1 ut. Each disk had a through hole in its center, and the diameter of this hole was L5 mm.

A counterbore portion having a diameter of 1.6 SOA and a depth of 0.5 B was provided under this through-hole pressure. The bearing was attached to the counterbore. After both bearings were installed in the counterbore, each of these disks was fixed to the end of the first pipe (i.e., a cap consisting of a disk and a bearing was attached to the end of the first pipe). Ta).

The distance between the two bearings was approximately 551+11.

The above fixation was performed such that a watertight seal was formed between the p4 ide and the cap. In this way, a °C conductive mixed fist applicator was manufactured using the bearing, disk, and first pipe.

A single polycaprolactam yarn having a diameter of 50 barons and a 20 denier was supplied to the main processing unit from the first winding shaft placed above the mix applicator. The cap on the top end of the first pipe was removed and the single fiber was passed by hand through a 75 micron diameter orifice. The thread is passed through the orifice and drawn out over a length of several inches (e.g., about 10 inches). The bottom cap of the first pipe is removed and the top cap is installed on the top end of the first pipe to close it. The bottom of the first pipe was then held under a slight vacuum. This vacuum caused air to flow and orient the yarn within the first pipe over a length of 10 inches. The monofilament was then The upper cap was reinstalled in such a way that it passed through the upper cap (i.e. bearing) S and the first ? The thread was placed directly behind the upper end of the evaporation tube and pulled out downward.The thread winding shaft around which the second polycaprolactam thread was wound was placed above the lateral side of the upper end of the evaporation tube (the first (See figure).This second yarn consists of 14 strands consisting of 66 single fibers.
It was a 0 denier thread.

Both yarns are from Badischs (Anderson
, 5outhCarolina (USA)].

A rod-shaped guide member, which is a thread guide member, was provided just above the upstream end of the evaporation tube. This guide member guides the thread path (
That is, the single fiber was located very close to (a) the final route taken after completion of the IJ process. The second thread (multi-rutted thread) was passed over the guide member, that is, the direction of movement of the second thread was changed by contact with the guide member (rod-shaped member). A balloon-shaped guide member is attached to the second winding shaft, and when the second thread that has passed through the balloon-shaped guide member passes through the rod-shaped guide member,
The position of this rod-shaped guide member itself and the passing position of the second system (the second
position when the system passes closest to the rod-shaped guide member)
The second thread was made to pass through the area between. This rod-shaped guide member is placed near the path of the second system at a position that satisfies the following conditions, that is, the second system comes into contact with the second thread from time to time, but after the string-up of the second system is completed. This is a position where the condition is that the path of the first system should not be substantially bent by the guide member, and the second system should not come into contact with the guide member. It was placed in Both yarns were then passed through a 10 m long evaporation tube and directly behind a pair of rollers (see Figure 1). The surface speed of both rollers is 690rrL
/min, the diameter of the large roller was about 10 cm5, and the diameter of the small roller was about 2.5 cIft. Both threads were then wound onto a single winding tube (see Figure 1).
- A conductive mix was prepared by dispersing 6 parts of conductive carbine plaque in a solution consisting of 90 parts of 70% formic acid (approximately 1 mw) and 4 parts of polycaprolactone chips.

This carmen black (powder) is manufactured by Chikaramet Co., Ltd. C200.
Barit, an Center Parkway,
Edison, N.J. 08817 (USA)]
It was purchased from , and the product name is Mulcan.
It was XC-72R'. The polycaprolactam chip was manufactured by Badische (Fr5epart ITe).
I purchased it from XAS (USA) and the product name is "
Nylon-6grade 206 chip”
Met.

After the start of winding the thread, the valve on the tube leading to the mix applicator was opened and the reservoir was filled with K mix. The string-up operation must be performed according to the method described above. This is because if the acid remains in the monofilament guide without substantially evaporating, the monofilament will completely decompose within about 6 seconds.

The C″4 leaked product, i.e., yarn, by the above method has intermittent solvent-bonded parts at average intervals of 5 to 10 m. When the distance between the thread and the thread is expanded in approximately 3 steps at the guide member, the static adhesive parts are spaced at an average distance of 200 m.
will be formed. This product has better beaming characteristics than conventional reinforcing yarns such as twisted yarns. Eye σ
The product manufactured by the method described above is made of anti-rust yarn supported by 37 filaments, has a denier value of 161°C, and a strength at break of approximately 4.0°C. ．． It was 4 g/denier. The breaking strength of both raw yarns is also approximately 4.4 g/
It was denier. By adding the mix, the denier value is increased by 1 denier 2 [j
It became the value. The tea product made by the method of this example is a type of antistatic treated yarn having supporting yarns in parallel and having a solvent bonded part, which is a special feature among the tea products of the present invention. This is preferable.

Using the yarn made by the method of this example, a meliderovirene fabric for carpeting was produced.

This fabric is manufactured by Amoco Fabric Company [5ou
th Hamil-ton 8trest # Dal
ton, Georgia 30720 (USA)]
It was a busy day. This fabric is polybacAs *
It was named 5style number 2605'.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram illustrating the most preferred embodiment of the method of the present invention. FIG. 2 is a schematic explanatory diagram of another specific example of the method of the present invention. FIG. 3 is an enlarged explanatory view of a part of the tea product according to the present invention. - Figure 4 is an enlarged view of a portion of Figure 3. FIG. 5 is a sectional view of a portion of the tea product along line C-CK in FIG. 4. 1--first system winding shaft; 2--first system; 3--conductive mix applicator; 4--1 roller; 5--1 evaporation tube;
6--Second thread; 7--Second thread winding shaft: 8--1 guide member; 9
--Guide member; 10-1 out; 11--Break line; 12-
- a thread winding shaft for winding; 13--supported antistatic treated yarn; 14--guiding member; 31--antistatic treated single thread; 3
2--Solvent adhesive part; 34--Non-conductive supporting fiber; 35
--Internal area; 36--Coated external area; 37-
Internal area; 38--Coated external area; 39-Interface area; 8A--Guide member.

Claims (17)

[Claims] (1) (a) a polymeric antistatic yarn covered with finely divided conductive particles; (b) a polymeric supporting yarn bonded to the conductive yarn by solvent adhesive; A supported antistatic treated yarn characterized in that it contains. (2) The supported antistatic treated yarn according to claim 1, wherein the conductive polymeric yarn is a polyamide yarn, and the polymeric supporting yarn is also a polyamide yarn. (3) A supported antistatic treated yarn according to claim 2, characterized in that the finely divided conductive particles are carbon black particles. (4) The supported antistatic treated yarn according to claim 3, wherein the antistatic treated yarn is a single filament yarn and the supporting yarn is a continuous multifilament yarn. (5) A supported antistatic treated yarn according to claim 4, characterized in that the finely divided conductive particles are carbon black particles. (6) The supported antistatic treated yarn according to claim 5, characterized in that the antistatic treated polyamide yarn is a polycaprolactam yarn and the polyamide supporting yarn is also a polycaprolactam yarn. (7) A fabric characterized in that it contains supported antistatically treated yarns in the form of continuous filaments bonded by solvent bonding. (8) A carpet characterized in that it contains supported antistatically treated yarns in the form of continuous filaments bonded by solvent bonding. (9) A composite carpet yarn comprising a carpet yarn mixed with antistatic treated yarn bonded and supported by solvent bonding. (10) Claim 9, characterized in that the antistatic treated yarn, support yarn and carpet yarn are continuous filament yarns.
Composite yarn as described in section. (11) Claim 10, characterized in that the conductive thread, the supporting thread and the carpet thread are polyamide threads.
Composite yarn as described in section. (12) (a) Adding finely divided conductive particles to a polymeric yarn to form a polymeric antistatic treated yarn; (b) Adding a polymeric supporting yarn to the antistatic treated yarn. A method for producing a supported antistatic treated yarn, characterized in that it is bonded by solvent bonding. (13) (a) a dispersion of finely divided electrically conductive particles in an amount sufficient to impart an electrical resistance of not more than 10^9 ohms/cm to a moving polymeric substrate in the form of filaments; and the particle dispersion is placed in a liquid that is a solvent for the polymeric substrate in the form of filaments but does not dissolve or react with the conductive particles. (b) By changing the traveling direction of the moving support thread with a guide member, the support thread approaches the base member that is moving at substantially the same speed as the support thread. and the liquid is a solvent for both the substrate and the supporting yarn, and the combination is carried out without substantially changing the direction of travel of the filamentous substrate. and wherein said combining occurs before a substantial amount of solvent evaporates from said substrate, and said combining occurs before a substantial amount of solvent evaporates from said filamentous substrate. (c) passing the supporting thread and the substrate in the combined state through an evaporation zone; In this zone, the support yarn and the substrate advance in a state in which they are close to each other in the longitudinal direction, and the solvent added to the filamentous substrate is evaporated in the tube that is the evaporation zone. , whereby the filamentous substrate and the supporting yarn are intermittently bonded by solvent bonding. Method. (14) A patent claim characterized in that the filamentous substrate and the supporting yarn are brought together so that the filamentous substrate and the supporting yarn exist together in a parallel state. The manufacturing method according to scope item 13. (15) the distance between the support thread and the filamentous base at the position where the guide member is present is less than 3 mm;
15. The manufacturing method according to claim 14, wherein the path of the filamentous substrate is configured so that it is not substantially bent by the support yarn. (16) The manufacturing method according to claim 14, wherein the support yarn and the filamentous substrate are made of polyamide. (17) The manufacturing method according to claim 14, wherein the solvent is formic acid.