JP4908432B2 - Weave fabric for manufacturing reinforcing fiber cord and method for manufacturing reinforcing fiber cord - Google Patents

Description

  The present invention relates to a weave fabric for manufacturing reinforcing fiber cords and a method for manufacturing reinforcing fiber cords. More specifically, a method for producing a weave fabric for reinforcing fiber cord in which a long reinforcing fiber cord can be obtained by removing the weft or pulling out the warp, and a reinforcing fiber using the weave fabric The code relates to a manufacturing method.

  In general, the tire cord weave fabric is a plain fabric with a coarse weft density composed of warps and wefts. For example, a polyester tire cord weave fabric is often used with 1100 decitex or 1670 decitex fiber bundles as warp yarns. When producing this weave fabric, the fiber bundle is first twisted in the Z direction (bottom twist). After forming a cord, the two twisted cords are twisted in the S direction (twisted) to obtain a warp.

  Then, 1,300 to 1,600 warps are prepared, and the weft density is 40 to 55/5 cm by using cotton yarn, polynosic or covering yarn with which the core yarn extends well. The weft density is woven so as to be 2 to 5/5 cm to be a plain weave and wound around a cell. The coiled fabric is usually subjected to resin processing by dipping processing (immersion processing) in order to maintain adhesion with rubber.

  That is, the tinned fabric is immersed and dried in an epoxy or epoxy compound solution, and then a resorcin-formalin-latex mixed solution is attached thereto, followed by heat treatment. Incidentally, the resin adhesion amount is 2 to 5% by weight, and the heat treatment temperature is performed using hot air of 100 to 250 ° C., but stretching is also performed at the same time in order to maintain the modulus of the warp cord.

  Since the processed weave fabric is usually rubberized as it is and used for tire molding, it is wound up as a weave fabric in which the warp density is regulated in advance so as to obtain the warp density required for the design of the tire. The warp length of the weave fabric is generally around 4,000 m.

  This is because, when the weaving fabric is rolled up, it becomes a considerable winding diameter and becomes a heavy weight. Therefore, the above-mentioned ease of use, the winding ability of the loom, and the weight regulation of the transporting device that transports the weaving fabric are mentioned above. The warp length was common.

  On the other hand, in recent years, a method of forming a tire by using a single cord, that is, a cord that is processed independently without being used as a braided fabric as a tire reinforcing material has been advanced. Even when producing this single cord, dipping treatment such as heat treatment and stretching is carried out in order to maintain adhesion with rubber in the same manner as the bamboo fabric, but the treated cord is wound around a paper tube alone, Since it is used in the next process, it can produce a cord with a length suitable for the winder winding capacity. With the current equipment, in the case of 1670 decitex twin-twist, it is around 13,000 m and weighs around 5 kg. Processing code is common. However, in single-cord processing, when crossing adjacent cords in the heat treatment / drying process, cord damage or cord breakage occurs. Therefore, it is necessary not only to control the yarns so that they do not cross, but also to individually separate the paper tubes. A winder is needed to wind it up. However, in normal equipment, the heat treatment device specifications of 100 to 200 spindles are common, so that the production efficiency is inferior compared to the production of the bamboo woven fabric, and as a result, the production cost is higher than that of the bamboo woven fabric. This point was regarded as a problem. Therefore, the fact is that it is required to establish a method for producing a single cord at the same production cost as that of a bamboo woven fabric.

  As a method for producing such a single cord, there has been proposed a method in which a warp is taken out from an interwoven fabric and used as a single cord. In this method, since a conventional interwoven fabric is used, a single cord is obtained. The length of the cord was at most about 3,000 m and the weight was about 1.3 kg, and there was room for improvement in view of the workability of the subsequent process.

  Further, in order to make a long cord, one end and the other end in the longitudinal direction of the interwoven fabric are knotted between the warp yarns arranged in parallel, and the long bobbin winding package is at least twice the length of the interwoven fabric. However, since this method requires knot work during weaving, not only can the work efficiency during weaving be reduced, but the knot part can be formed, and the diameter of that part is enlarged. As a result, there is a problem that a uniform code cannot be obtained, work such as removal in the next process is involved, and it is not easy to use, and an inexpensive code cannot be provided.

  On the other hand, since the weave fabric has a considerable winding diameter and heavy weight, the warp fabric of the weave fabric is used in consideration of the ease of use in the subsequent process, the winding ability of the loom, and the weight control of the transporting device that transports the weave fabric. Length has become common. For this reason, in order to obtain a long warp without knots, it is conceivable to simply increase the winding amount of the interwoven fabric, but there are problems in terms of workability and equipment from the above situation.

JP 2000-198148 A Japanese Patent Laid-Open No. 11-245614

  The present invention has been made in view of the background art described above, and does not require special equipment and can use conventional equipment as it is, so there is no need for capital investment, and wefts are removed or warps are pulled out. It is possible to easily produce a long fiber cord that can be used for reinforcing a resin or rubber, and to provide a method for producing a weave fabric for production of a reinforcing fiber cord excellent in workability. Objective. Furthermore, it aims at providing the manufacturing method of the fiber cord for reinforcement which can manufacture a long fiber cord easily with sufficient work efficiency.

  As a result of investigations to solve the above problems, the present inventors have found that it is possible to easily obtain individual reinforcing fiber cords one by one by pulling out the wefts after applying the resin in the shape of a weave fabric. This is a completely different idea from using a woven fabric for rubber reinforcement as it is. By using a plurality of narrow weave fabrics suitable for the above method, a reinforcing cord can be obtained for a long braid fabric. In addition, the weight of each wound package can be reduced, so that work can be performed efficiently, and the resin can be applied to improve the adhesive at the same time using conventional equipment without investing in new equipment. And reached the present invention.

  Thus, according to the present invention, a plurality of interwoven fabrics having a width of 20 to 130 cm, in which wefts are driven into a large number of warps, and fiber cords used for reinforcing rubber or resin are arranged on the warps, are arranged in parallel. Alternatively, it is immersed in the same treatment bath in which the resin is dissolved or dispersed and mixed, and the resin is applied, and the manufacturing method of the weave fabric for manufacturing the reinforcing fiber cord and the manufacturing of the reinforcing fiber cord There is provided a method for producing a reinforcing fiber cord, characterized in that the weft yarn produced by the method for producing a weave fabric is removed from the weave fabric or the fiber cord which is a warp is recovered by pulling out the warp yarn. .

  The method for producing a weave fabric according to the present invention does not use a wide interwoven fabric and pulls out the warp from the beginning, but uses a narrow interwoven fabric from the beginning, and arranges or stacks a plurality of such narrow interwoven fabrics. Since the resin can be applied by directly using the apparatus using the bamboo woven fabric, no special equipment is required, and no new capital investment is required. In addition, when using a wide weave fabric, if the length of the package becomes a certain length, the weight of the wound package becomes heavier and the workability becomes worse. The fabric can be wound up for a longer time, and a long tinted fabric can be obtained. Further, a long reinforcing fiber cord having no knots can be efficiently produced from the fabric.

  The interwoven fabric for manufacturing a reinforcing fiber cord used in the present invention is an interdigital fabric in which wefts are driven into a large number of warps, and the fiber cords used for reinforcing rubber or resin are arranged on the warps. That is, the interwoven fabric of the present invention is not used for reinforcing rubber or resin in the form of interwoven fabric as it is, but after applying an adhesive treatment to this, removing the weft or pulling out the warp, These can be used for reinforcing rubber or resin as individual fiber cords (hereinafter also referred to as single cords).

  As the warp used in the above weave fabric, polyamide fiber represented by nylon 6 fiber, nylon 66 fiber, polyethylene terephthalate fiber, polyethylene naphthalate fiber, polyester fiber represented by polybutylene terephthalate fiber and polyvinyl alcohol fiber, aramid Examples thereof include fiber cords obtained by twisting fibers, rayon fibers, carbon fibers, etc., or hybrid cords in which two or more of these fibers are mixed or combined.

The fineness of the fibers constituting the warp is preferably 0.5 to 10 dtex, more preferably 0.5 to 5 dtex. The fineness of the yarn constituting the warp is preferably 560 to 2200 dtex, more preferably 1100 to 1670 dtex.
As the warp, it is possible to use a yarn obtained by subjecting the above yarn to 30 to 50 t / 10 m, twisting 2 to 3 yarns, and further twisting 30 to 50 t / 10 m. The total fineness of the warp is preferably 1100 to 5000 dtex, more preferably 2200 to 3340 dtex.

On the other hand, as the wefts used in the weave fabric of the present invention, the warps include polyamide fibers represented by nylon 6 fibers and nylon 66 fibers, polyethylene terephthalate fibers, polyethylene naphthalate fibers and polyesters represented by polybutylene terephthalate fibers. Examples thereof include fiber, cotton yarn, polynosic fiber and the like.
The fineness of the fibers constituting the weft is preferably 0.5 to 10 dtex, more preferably 0.5 to 5 dtex. Further, the total fineness of the weft is preferably 33 to 560 dtex, more preferably 110 to 330 dtex.

  The manufacturing method of the weave fabric according to the present invention is the same treatment bath in which a plurality of the weave fabrics having a width of 20 to 130 cm are arranged in parallel or overlapped to dissolve or disperse the resin. It is important to apply the resin by immersing it in the substrate. This method makes it possible to easily obtain a long fiber cord used for reinforcing a resin or rubber by using conventional equipment as it is without requiring special equipment, removing the weft or pulling out the warp, and improving workability. Can also produce excellent interwoven fabrics. Here, “immersing in the same treatment bath” means immersing in a treatment liquid bath having the same composition, and even if there is only one bathtub in the treatment bath or a partition is provided in the bathtub. A separate bathtub may be used.

  In the present invention, the width of the interwoven fabric is 20 to 130 cm, more preferably 50 to 100 cm. The length of the weave fabric, that is, the length of the fiber cord obtained as the warp is preferably 5000 m or more, and more preferably 10,000 m or more. By setting the length and width of the weave fabric, wefts can be easily removed even after the adhesion treatment, and a long fiber cord can be obtained as a warp. Moreover, the weight of the wiped fabric is not too heavy and the handleability is excellent.

  Further, from the viewpoint of handling properties, it is preferable that the package in which the weave fabric is wound has a weight of 2500 kg or less and a winding diameter of 220 cm or less. It should be noted that even if the weight is too small, it is not possible to ensure a sufficient warp length, so that the weight of the package is preferably 1500 kg or more and the winding diameter is 150 cm or more.

  Furthermore, the conventional weave fabric is as wide as 140 to 160 cm, and if we are going to manufacture a long weave fabric to obtain a long fiber cord (warp), the weight of the wound package will increase and work Sexually worsens. For this reason, it is necessary to limit the length of the braided fabric to about 3000 m at most, and there is a problem that only a short fiber cord can be manufactured.

  Therefore, if a long fiber cord is to be obtained, the length of the weave fabric is wound around 3000 m as described above, and the end of the warp fabric and the start end of the other weave fabric are knotted. Thus, it is necessary to connect them together and to make the warp length longer. However, in that case, there is a problem that not only a troublesome work of knotting warps one by one but also a knot portion is formed in the warps, and a uniform fiber cord cannot be obtained.

  On the other hand, the manufacturing method of the weave fabric according to the present invention, and hence the manufacturing method of the reinforcing fiber cord according to the present invention, which will be described later, solves these problems at once, and uses the above-mentioned width weave fabric. Thus, the package of the weave fabric can be reduced in weight, and a long fiber cord (warp) can be obtained. For example, in the case of using an 80 cm wide bamboo woven fabric, the weight per unit length of the conventional 160 cm wide bamboo woven fabric is halved, and is doubled within the range of the weight regulation of the transporting device that carries the bamboo woven fabric. It is possible to wind the length and weight. That is, the width of the interwoven fabric is shortened and the weight is reduced correspondingly, so that the interwoven fabric can be wound up longer. Moreover, for example, an 80 cm wide tinted fabric uses a device that applies resin to a 160 cm braided fabric, and two of these can be arranged to apply the resin, so that the production efficiency does not decrease. Further, since the width of the weave fabric is short, wefts can be easily removed.

  As the interwoven fabric, 100 to 1000 warps are lined up, wefts are driven into the fabric, and a woven fabric having a width of 20 to 130 cm can be used. Specifically, for example, when the width is 20 cm, the warp is 100 to 200, when the width is 40 cm, the warp is 200 to 400, when the width is 80 cm, the warp is 400 to 800, and the width is 100 cm. In this case, a weave fabric woven with 500 to 1000 warps can be used. Further, in order to obtain a long braided fabric, that is, a fiber cord that is a warp, it is preferable to set the warp density lower than usual. Specifically, for example, when the width is 20 cm, the warp is 100 to 150, when the width is 40 cm, the warp is 200 to 300, when the width is 80 cm, the warp is 400 to 600, and the width is 100 cm. In this case, it is preferable to use an interwoven fabric with 500 to 750 warps.

  In the present invention, for example, a comb fabric obtained by dividing a wide fabric into two or more can be used as the comb fabric. As the interwoven fabric before splitting, 800-1500 warps can be arranged, wefts can be driven into the weave, and weaved with a width of 140-160 cm. However, long interwoven fabrics, that is, fiber cords that are warps In order to obtain the above, it is preferable to set the warp density to about 50 to 85% lower than usual. Specifically, it is preferable that the number of warps is 800 to 1200 in the above-described fabric width.

  Since the interwoven fabric is cut and divided later in the length direction of the fabric, it is preferable to reduce the warp density of the fabric of the portion to be divided so that the interwoven fabric can be easily cut. Specifically, the warp density is preferably 2 to 4 yarns / cm in the width of 0.3 to 10 cm.

  Moreover, it is preferable to select the apparatus used for cutting the weft when dividing the weave fabric into two or more depending on the type of weft. For example, when the weft is a cotton yarn having a low cutting elongation, a thermal cutter is preferably used when it includes a cutter or scissors and a polyester fiber having a high cutting elongation.

  The weft yarn density of the weave fabric is the same when weaving and using a narrow weave fabric of 20 to 130 cm from the beginning, or when dividing the wide weave fabric into two or more and using it as a narrow weave fabric of 20 to 130 cm However, it is desirable to select a range of 1.5 to 4.5 pieces / 5 cm, which does not hinder the handleability of the wound weave fabric.

  In the present invention, a plurality of the interwoven fabrics are arranged in parallel or overlapped and immersed in the same treatment bath in which the resin is dissolved or dispersed and mixed, and the resin is applied. Here, the number of brazing fabrics subjected to the treatment at the same time is preferably 2 to 10, more preferably 2 to 8, and further preferably 2 to 6. As a device for applying a resin to an interwoven fabric, it is desirable to use a conventional device for applying a resin to an interdigital fabric having a width of 140 cm or more as it is, without the need for new capital investment. For example, using an apparatus capable of processing a 160cm wide interwoven fabric, two 80cm wide interdigital fabrics, four 40cm wide interdigital fabrics, or eight 20cm wide interwoven fabrics, etc. From the viewpoint of work efficiency, it is preferable to process the blind fabrics in parallel. On the other hand, even if the number of the interwoven fabrics is too large, the time and effort required for applying the intercalated fabric to the apparatus becomes complicated, so it is desirable to set the number within the above range.

  In the present invention, the resin imparted to the tinted fabric is a resin that improves the adhesion between the fiber cord obtained from the tinted fabric and rubber or resin, and can also be referred to as an adhesive. Specifically, an epoxy resin, a urethane resin, a polyester resin such as polyethylene terephthalate, a polyolefin resin such as polyethylene or polypropylene, or a polyamide resin such as nylon 6, nylon 66, or nylon 12 can be applied. Moreover, as a treatment bath, what melt | dissolved or disperse-mixed the said resin in water or the solvent by the well-known method can be used. Among these, from the viewpoint of handling, it is preferable from the viewpoint of handling and workability to use a treatment bath dissolved or dispersed in water.

In particular, when the fiber cord is used for rubber reinforcement, for example, an epoxy compound, an isocyanate compound, a halogenated phenol compound, a resorcin polysulfide compound, or the like can be applied as the resin. In the case where these are applied, for example, a mixed liquid of an epoxy compound, a block isocyanate, and a latex is applied in the first processing liquid, and an initial condensate and rubber of resorcin and formaldehyde are used as the second processing liquid after the heat treatment. A latex solution (RFL solution) is applied.
Although the adhesion amount of resin is not specifically limited, 0.1 to 10 weight% is preferable on the basis of the weight of a fiber cord, and 0.5 to 5 weight% is preferable.

  Also, at this time, by winding each of the comb fabrics subjected to the adhesive application treatment separately, the package in which the fabric is wound is not heavier than the wide fabric and further increases the winding amount. Therefore, it is possible to produce a long weave fabric, and thus a long fiber cord.

  The manufacturing method of the reinforcing fiber cord of the present invention is a method of removing the weft or pulling out the warp from the weave fabric manufactured by the above method. That is, from the weave fabric to which the above-described resin is applied, the weft is removed by pulling or handling with a scissors, or the warp is pulled and a single cord used for reinforcing rubber or resin consisting of a large number of warps is used. Can be easily and efficiently produced. Moreover, in the method of the present invention in which the resin is applied in the state of the weave fabric as described above, the weft is extracted, and the fiber cord is manufactured, when the resin is applied by arranging a plurality of independent single cords one by one. There is no problem that the adjacent single cords cross each other to cause cord damage or cord breakage, and that the thread guide management is difficult to prevent each cord from crossing.

  The present invention will be further described below with reference to examples and comparative examples. In addition, in the Example, it carried out within the following equipment restriction | limiting ranges. That is, the equipment restrictions were set to a winding diameter of 200 cm or less, a winding width of 165 cm or less, and a winding weight of 2,000 kg or less.

[Example 1]
1670 decitex 250 filament polyethylene terephthalate fiber (P942NL BHT1670T250 made by Teijin Fibers Co., Ltd.), after twisting 40t / 10cm, twist it into a double yarn cord with 40t / 10cm top twist. , 500 were prepared. As the weft, a polyester processed yarn of 300 dtex 144 filament (“Nobil II” NB2 SD300T144 made by Teijin Fibers Ltd.) was used, and the weave fabric was woven by designing a kite so that the weft density was 2 / 5cm and the fabric width was 80 cm. .

  The obtained weave fabric had a winding diameter of 198 cm, a weight of 2,000 kg, and a weave fabric length of 11,600 m. As described above, the amount of winding is within the equipment limit, and there were no work-related problems in terms of equipment and transportation. Further, two interwoven fabrics were obtained in the same manner.

  The obtained two bamboo weave fabrics are arranged in parallel, and epoxy resin (“Denacol” manufactured by Nagase Chemical Industries) 3 g (solid content) / liter, block isocyanate compound (“S-3” manufactured by Meisei Chemical Co., Ltd.) 12 g (solid content) / liter and rubber latex (“Nipol” manufactured by Nippon Zeon Co., Ltd.) 85 g (solid content) / liter are simultaneously immersed in a mixed liquid bath (first treatment liquid bath) prepared by dispersing and mixing in water. After the first treatment liquid was deposited by 2% by weight, it was simultaneously passed through one dryer and dried at 130 ° C. for 100 seconds, and then simultaneously at 200 ° C. for 45 seconds with a single stretching heat treatment apparatus at a magnification of 1 The film was stretched and heat treated at a magnification of 0.035, and a resin fabric (solid content of the first treatment liquid bath) adhered to the fabric.

  Next, the two braided fabrics to which the first treatment liquid was adhered were arranged in parallel and simultaneously immersed in a second treatment solution bath in which resorcin-formalin-rubber latex (RFL) was adjusted to a concentration of 200 g / liter. Then, after depositing 2% by weight of the second treatment liquid, it is dried at 100 ° C. for 100 seconds by passing it through one dryer, and then simultaneously at 240 ° C. for 60 seconds by one stretching heat treatment apparatus. Then, a stretch heat treatment was performed at a draw ratio of 1.035 times, and further, a heat treatment for relaxation was performed at 240 ° C. for 60 seconds at the same time with one heat treatment machine to obtain an interwoven fabric subjected to a resin (RFL) application treatment.

  In addition, as described above, the resin application process of two 80 cm wide weave fabrics is generally used in the processing of a 160 cm width comb fabric by arranging these two fabrics in parallel. It was carried out by immersing in a first treatment liquid bath and a second treatment liquid bath used for resin application. Furthermore, using a drier, a stretching heat treatment apparatus, and a heat treatment machine as they were, two fabrics were arranged in parallel and subjected to a heat treatment or the like, and could be processed without any problems.

  The weft was extracted from the obtained weave fabric subjected to the application of the adhesive. However, since the width of the weave fabric was as narrow as 80 cm, it was possible to easily remove the weft. In addition, by removing the weft, 500 long single cords of 11,600 m were simultaneously obtained, and 1,000 long single cords were obtained from two interwoven fabrics.

[Example 2]
An interwoven fabric having a width of 80 cm was wound up in the same manner as in Example 1 except that 450 warp yarns were prepared. The obtained weave fabric had a winding diameter of 197 cm, a weight of 2,000 kg, and a weave fabric length of 12,900 m. The winding amount of the weave fabric is within the equipment limits, and there were no problems in equipment and work in transportation.

  Moreover, although wefts were extracted from this weave fabric, wefts could be easily extracted. Furthermore, 450 long single cords of 12,900 m could be manufactured simultaneously by removing the weft. In addition, a total of 900 long single cords were obtained from the two braided fabrics.

[Comparative Example 1]
A warp structure similar to that of Example 1 was prepared, but the number of warp yarns was a typical interwoven fabric configuration currently woven. That is, the number of warp yarns was 1,450 and a braided fabric having a width of 160 cm was wound by a winding device. The obtained weave fabric had a winding diameter of 143 cm, a weight of 1,900 kg, and a weave fabric length of 3,500 m.

  The winding amount of the weave fabric is within the equipment limits, and there were no problems in equipment and work in transportation. However, the weft was extracted from this bamboo woven fabric, but the width of the woven fabric was as wide as 160 cm. Moreover, the length of the single cord obtained by extracting the weft was as short as 3,500 m.

  According to the manufacturing method of the weave fabric for manufacturing the reinforcing fiber cord of the present invention, no special equipment is required, and the conventional equipment is used as it is, so that the weft is removed or the warp is drawn to remove the resin or rubber. It is possible to easily produce a long fiber cord used for reinforcement of the fiber. In addition, since the weave fabric obtained by the above production method does not become heavy, it is excellent in workability. Furthermore, according to the method for manufacturing a reinforcing fiber cord of the present invention using the above-mentioned interwoven fabric, a long fiber cord can be easily manufactured with high work efficiency. Therefore, the brazing fabric for manufacturing reinforcing fiber cords and the method for manufacturing reinforcing fiber cords of the present invention are advantageous in terms of economy, workability, and safety, and have extremely high industrial utility value.

Claims (3)

  A plurality of braided woven fabrics having a width of 20 to 130 cm, in which wefts are driven into a large number of warps and fiber cords used for reinforcing rubber or resin are arranged on the warps, are arranged in parallel or overlapped, A method for producing a weave fabric for producing reinforcing fiber cords, wherein the resin is applied by dipping in the same treatment bath dissolved or dispersed and mixed.   The method for manufacturing a braided fabric for manufacturing reinforcing fiber cords according to claim 1, wherein after applying the adhesion imparting treatment to the braided fabric, the plurality of braided fabrics are separately wound up.   The fiber cord which is a warp is recovered by removing the weft from the weave fabric manufactured by the manufacturing method of the weave fabric for manufacturing the reinforcing fiber cord according to claim 1 or 2, or pulling out the warp. A method for producing a reinforcing fiber cord.