WO2002092894A1 - Woven fabric for toothed belt - Google Patents
Woven fabric for toothed belt Download PDFInfo
- Publication number
- WO2002092894A1 WO2002092894A1 PCT/JP2002/004714 JP0204714W WO02092894A1 WO 2002092894 A1 WO2002092894 A1 WO 2002092894A1 JP 0204714 W JP0204714 W JP 0204714W WO 02092894 A1 WO02092894 A1 WO 02092894A1
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- WO
- WIPO (PCT)
- Prior art keywords
- woven fabric
- yarn
- toothed belt
- fiber
- stretchable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0094—Belts
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
Definitions
- the present invention relates to a woven fabric used for a toothed surface of a toothed belt, a method for producing the woven fabric, a toothed belt obtained by bonding the woven fabric to the toothed surface, and a stretchable fabric used for the woven fabric.
- a woven fabric used for a toothed surface of a toothed belt a method for producing the woven fabric, a toothed belt obtained by bonding the woven fabric to the toothed surface, and a stretchable fabric used for the woven fabric.
- toothed belts have been used in various applications from industrial machines to home appliances, and in particular, have been widely used as drive components that transmit the driving force of an automobile engine to the rotational motion of an axle.
- the noise of vehicles is much higher when driving at high speeds, so environmental considerations for passengers and their surroundings are required.
- the fabric forming the tooth surface of the toothed belt must have sufficient strength and, in particular, sufficient elongation properties in the belt length direction (especially for tooth molds in the process of integration with rubber). And the uniform surface properties after elongation are required.
- a conventional stretchable woven fabric used for the toothed belt tooth surface is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 8-31224, which comprises a plurality of wooly-processed yarns in order to enhance the elongation characteristics.
- a woven fabric using a ply-twisted yarn that is ply-twisted in the opposite direction to the ply-twisted yarn is disclosed.
- the yarns of the woven fabric are ply-twisted yarns, it is easy for spots to be twisted, and only coarse woven fabrics can be obtained.
- the fabric was not suitable for low noise and energy saving design (thin, compact design), which impaired smoothness.
- Japanese Utility Model Publication No. 63-156628 discloses a covering yarn in which an aromatic polyamide having excellent heat resistance and abrasion resistance is used as an inelastic fiber, and an elastic fiber is wound around the core.
- an elastic fiber is wound around the core.
- the force-paring yarn has a structure in which the elastic fiber and the non-elastic fiber are likely to be displaced, so that the surface of the woven fabric using the covering yarn has unevenness due to the covering unevenness.
- high-strength fibers such as aromatic polyamide fibers as inelastic fibers have high rigidity and do not have crimping, so it is difficult to obtain sufficient elasticity as a woven fabric for the teeth of a toothed belt.
- the fineness of the elastic fiber is increased to achieve large stretchability, the inelastic fiber jumps out to the surface of the woven fabric in a horn-like manner, and especially the neatly arranged twill wires required for low noise and the woven fabric with excellent surface smoothness Has not been obtained.
- Japanese Patent Application Laid-Open No. 59-92339 discloses a woven fabric made of combustible yarn in a form in which a nonwoven elastic fiber and an inelastic fiber are twisted.
- the inelastic fibers are used as raw yarns (not crimped)
- the filaments that make up the inelastic fibers in the scouring / relaxing process that develops elongation in the woven fabric are square.
- the helical structure of the elastic fiber is enlarged by the elastic fiber, but when the rubber is vulcanized, the elastic fiber melts out and only the helical structure of the non-conductive fiber remains on the belt tooth surface. The quality will deteriorate and the twill of the fabric will not be orderly. Further, when the ratio of the elastic fibers increases, the elastic fibers that have melted out due to the heat of the rubber vulcanizate become impurities, and the adhesiveness between the woven fabric and the rubber tends to be poor. Disclosure of the invention
- An object of the present invention is to provide a toothed belt woven fabric having an extension property with less unevenness in order to improve the conventional disadvantages described above and achieve low noise, high durability, and space saving.
- An object of the present invention is to provide a toothed belt which is adhered to the surface of a belt tooth portion provided with a belt.
- the present inventors investigated the noise generation mechanism of a toothed belt, and carefully examined a toothed belt of a loud noise or a low noise, and a durable or bad toothed belt. Analysis was considered.
- the noise is greatly affected by the impact noise generated when the teeth of the belt and the pulley engage with each other, and the friction and airflow noises generated at that time.
- the noise between the clear fabric and the pulley contact surface due to its neatness It was found that the impact effect and the elimination of air traps alleviated the impact noise, friction noise, and airflow noise, and also improved durability.
- the inventors of the present invention focused on a ply-twisted composite yarn having good stretchability and focused on giving a certain amount of crimp to the inelastic fiber used.
- the method also creates stretchable ply-twisted yarns in which the twist coefficient at the time of ply twisting with the inelastic fiber crimped yarn and the expansion / contraction elongation of the inelastic fiber crimped yarn are variously changed.
- the elastic coefficient and the inelastic fiber crimped yarn having a specific expansion / contraction rate with a specific twist coefficient, and twisted together.
- the present invention is as follows.
- the twist coefficient of the stretchable plied yarn is 100 to 1600.
- the fineness of the elastic fiber in the elastic plied yarn is 50 dtex or less 4.
- the woven fabric for a toothed belt according to any one of the above items 1 to 3, wherein
- the stretched elastic fiber and the inelastic fiber crimped yarn are twisted at a twist coefficient of 100 to 160 to form an elastic plied yarn, and the obtained elastic plied yarn is warp and / or Or a method of weaving using a weft and crimping the resulting fabric to produce a fabric for a toothed belt having a breaking elongation of 80% or more.
- a toothed belt comprising the woven fabric according to any one of the above 1 to 9 as a cloth.
- Elastic fiber and inelastic fiber crimped yarn are ply-twisted or blended and fired, and have a combustion coefficient of 100 to 160 000. Sex twisted yarn. 22.
- a raw material may be a polymer such as a polyurethane or a polyetherester, and the spinning method is dry spinning, melt spinning, wet spinning or chemical spinning.
- a spinning method utilizing a reaction or the like can be used, and the polymer and the spinning method are not particularly limited. It preferably has an elongation at break of 400% to 100% and excellent elasticity, and the fiber form is not particularly limited.
- copolymerized polyalkylene ether diols mainly 4,
- Polyurethane elastic fibers having a number average molecular weight of 500 and a rare area of 65 to 950 and a modulus of 300% of 0.18 cN / decitex or less can be mentioned.
- the material is not limited to this as long as it is an elastic fiber material having a breaking elongation.
- the inelastic fiber in the inelastic fiber crimped yarn of the woven fabric for a toothed belt of the present invention is not particularly limited, but a fiber having a high breaking strength is preferable, and a polyamide-based fiber, a polyester-based fiber, or a poly-trile is preferred. Methylene terephthalate fiber, carbon fiber (PAN, pitch), aramide fiber (para, meta), polyketone fiber, polyethylene fiber, PVA fiber, etc. are used.
- the inelastic fiber becomes a soft woven fabric as it is a multifilament fiber or a single yarn fineness is small, the stress value at the initial elongation is small, and the teeth of the timing belt It is preferable because it can be finished finely, but it is sufficient to select in consideration of strength.
- the breaking strength of the inelastic fiber is preferably at least 7 cN / dteX in order to enhance the durability of the tooth portion, and more preferably at least 16 cNZdtex.
- the cross-sectional shape may be a deformed shape such as a ⁇ shape, a W shape, a gourd shape, etc. other than the round shape, and may be appropriately selected according to the purpose.
- the crimped yarn of the inelastic fiber crimped yarn refers to a yarn obtained by crimping the inelastic fiber by means such as a spinning method and false twisting.
- a processed yarn obtained by performing a crimping process such as false twisting or indentation with a long fiber is preferably used, as long as a crimp that can obtain the above-described effects is provided.
- the false twisting means a commonly used false twisting machine may be used, for example, a pin false twisting machine, a belt nip false twisting machine, a friction false twisting machine, and the like. Any of the two-heater method and the two-heater method may be selected according to the desired use. However, in order to eliminate crimp strain and obtain a uniform woven fabric surface, the two-heater method is more preferable.
- the non-elastic fiber used for the stretchable twisted yarn in the woven fabric for a toothed belt of the present invention needs to have an appropriate crimp.
- the appropriate thickness of the fabric plays the role of cushion, and when it is made into a toothed belt, the impact noise generated when engaging with the pulley is absorbed, and the noise reduction effect ( Low noise) is obtained, and the impact of the belt teeth is reduced, so that cracks are less likely to form at the roots of the teeth, and the durability is increased, thereby achieving the object of the present invention.
- the index indicating the degree of crimp is the stretch ratio, and the measurement method is in accordance with the JIS-L-109 (1977) B method.
- the stretchable elongation of the inelastic fiber crimped yarn used for the stretchable ply-twisted yarn in the present invention is preferably from 2 to 250%, and from 5 to: L0%. More preferably, it is more preferably 7 to 50%. If the stretch ratio is less than 2%, sufficient cushioning effect cannot be obtained because the degree of crimp is small, and when the fabric is shrunk in the process of developing extensibility, the inelastic fiber Due to the high rigidity, the filaments constituting the inelastic fibers accompanying the shrinkage jump out into the surface of the woven fabric in a square shape, the elongation ductility increases, and the surface smoothness deteriorates.
- the relationship between the stretching and elongation and the strength of the yarn is that in order to increase the elongation and elongation, it is generally necessary to tighten the crimping conditions, and the strength of the yarn is reduced accordingly. The strength is also reduced, and the durability is also poor. Furthermore, when only the inelastic fiber crimped yarn containing no elastic fiber is used, the inelastic fiber crimped yarn having a stretching / elongation ratio of about 200% should be used in order to sufficiently exhibit contraction of the woven fabric.
- the shrinking method requires long-time liquid scouring (patch processing) in order to develop large shrinkage.
- it is difficult to shrink it is difficult to obtain a stable woven fabric having uniform elongation characteristics because the width of the creped fabric is large and the dimensional stability is poor.
- the inelastic fiber crimped yarn as the inelastic fiber crimped yarn, a good stretchable twisted yarn can be obtained even if a fine crimp is applied to the inelastic fiber, and a woven fabric having a sufficient elongation property can be obtained.
- inelastic fibers having a small crimp if the non-elastic fibers are used alone, a woven fabric having sufficient elongation properties
- the technology of the present invention makes it possible to obtain stretchable ply-twisted yarns having uniform surface properties and excellent elongation characteristics and a small decrease in the original yarn strength.
- the processing method it is possible to obtain sufficient elasticity even by continuous spreading and scouring, and also to obtain the advantage of the process that the process stability is excellent. Furthermore, compared to the conventional woven fabric using false twisted yarn, the strength of the woven fabric is large, so that the belt width can be narrowed. As a result, the space saving in the engine of an automobile or the like can be achieved. (Compact design, weight reduction) is also possible.
- toothed belts using high-strength fibers have been proposed to improve durability and save space, but most of them remain intact. It uses a force-balancing yarn (double-force pal- ing-single luka-paling) in which a high-strength fiber is wound around an elastic fiber. Since the elastic fiber and the high-strength fiber constituting the covering yarn have different shrinkage forces, when the woven fabric using this covering yarn is shrunk, only the high-strength fiber jumps out onto the woven fabric surface in a square shape. As a result, the elongation characteristics are uneven and uneven.
- high-strength fibers such as aramid fiber para-based, meta-based, and polyketon fibers
- the twist point does not shift due to the centrifugal force accompanying the rotation of the inelastic fiber in order to uniformly turn the non-conductive fiber with a large fineness around the elastic fiber.
- the core yarn is manufactured with a large fineness (generally equivalent to 310 dte X), but the displacement of the twist point remains unresolved. Therefore, the woven fabric using the capping yarn has a large proportion of the elastic fiber, so that the elastic fiber deteriorates during vulcanization of the rubber when forming the toothed belt and becomes an impurity, and the adhesiveness with the rubber is deteriorated. This has an adverse effect and also makes the elongation characteristics non-uniform, resulting in poor noise and durability.
- the inelastic fiber crimped yarn according to the present invention is wound into a composite yarn (using known composite means such as composite spinning, entanglement, combustion, and fluid spraying) in which one or more fibers having different types and forms are combined.
- the shape may be reduced, the cross-sectional shape is not particularly limited, and may be selected according to the desired use.
- the inelastic crimped yarn may be a composite of a long fiber crimped yarn and a spun yarn as long as the strength is not impaired.
- the stretchable ply twisted yarn in the woven fabric for a toothed belt of the present invention refers to a yarn obtained by combusting a stretched elastic fiber and a non-elastic fiber crimped yarn.
- a commonly used twisting machine may be used, and examples thereof include machines such as a double twister, an Italian twisting machine, a ring twisting machine, and a twisting machine.
- Stretched plied yarn can be made in one step, and if the number of twists is large, it can be made in two steps. In the case of making in one process, the elastic fiber and the inelastic fiber crimped yarn may be drawn together by a ring twisting machine or the like, and then the required number of twists may be twisted.
- Both the elastic fiber and the inelastic fiber crimped yarn may be twisted with a low twist number (20 to 300 TZm), and then further twisted with a twisting machine such as a double twister.
- the elastic fiber and the inelastic fiber crimped yarn may be aligned using a twisting machine, air-entangled and mixed, and then twisted with a double twister or the like.
- the elastic fiber and the inelastic fiber crimped yarn are aligned, the elastic fiber is air-entangled between the false twisted inelastic fiber crimped yarn and the false twist zone and the winding section. After applying, it can be wound up. At this time, non-elastic fibers that have not been subjected to false twist Can be entangled with the elastic fiber after being formed into a non-woven fiber crimped yarn by a false twisting process. False twisting is also possible.
- the air entanglement device may be installed in the process of aligning the elastic fiber and the inelastic fiber crimped yarn.
- the air entanglement device is attached to a rewinder or a ring twisting machine, and immediately after the two are aligned, the air entanglement device is passed through.
- An entanglement point can be given to the elastic fiber and the inelastic fiber crimped yarn.
- the air entanglement device is designed so that compressed air is injected into the tunnel from one or several places in the form of a tunnel, and the yarn is opened and entangled to form a entanglement point between the elastic fiber and the inelastic fiber crimped yarn. These are called interlacer nozzles, entangled nozzles, etc.
- This air confounding device is manufactured by Heparaine's SlideJet HFP (trade name), Awa Spindle's MK-2 and MK_13 (trade name), and Toray Precision's PC22. 0 and PC210 (trade name) can be used, but any other materials having a confounding function can be used.
- the apparatus for applying a draw ratio to an elastic fiber when producing a stretchable plied yarn in the woven fabric for a toothed belt of the present invention is a method of placing a wound package of an elastic fiber on a machine such as a plying machine or at another place. Then, the elastic fibers uniformly drawn out from the wound package of the elastic fibers with a constant tension and the inelastic fiber crimped yarns wound on a creel of a plying machine are aligned, and then twisted.
- the tension of the elastic fiber can be determined from the stress-elongation curve of the elastic fiber to obtain a desired draw ratio and stretching property. It can also be determined by measuring the tension of the elastic fiber drawn at a desired elongation ratio.
- the fineness mixture ratio of the elastic fibers occupying in the stretchable twisted yarns in the woven fabric for a toothed belt of the present invention is the fineness mixture ratio of the elastic fibers after applying the stretching ratio. It is preferably 15 wt% or less from the viewpoint of the composite state of the elastic fiber and the inelastic fiber crimped yarn, the belt strength after rubber vulcanization, the processability during twisting, and the like. If stretchable ply-twisted yarns with a fineness mixing ratio of the elastic fibers exceeding 15 wt% are used, the elastic fibers will melt after rubber vulcanization and become impurities, resulting in a decrease in adhesion and partial deterioration.
- the elastic fiber in the elastic plied yarn should be as small as possible in order to improve the processability during rubber vulcanization and the performance of the obtained toothed belt.
- the range of% is more preferable.
- the stretch ratio of the elastic fiber of the stretchable ply-twisted yarn used in the woven fabric for a toothed belt of the present invention is preferably in the range of 2 to 4, more preferably 2.5 to 3.5.
- the stretching ratio of the elastic fiber indicates the rate of increase in the length of the pulled out elastic fiber from the length of the yarn wound around the wound package. If the fiber feeding speed (rolling speed of the elastic fiber on the circumference of the wound package) is twice, the draw ratio will be 2.
- the fineness of the elastic fiber in the stretchable plied yarn in the woven fabric for a toothed belt of the present invention is preferably 50 dtex or less, more preferably 7 to 35 dtex. This is the preferred range. If the fineness of the stretched elastic fiber is small, The contraction force of the stretchable plied yarn is weakened, and the woven fabric does not have sufficient contraction force. If the contraction exceeds 50 dte X, there are many impurities in the elastic fiber melted in the rubber vulcanized belt. In addition to having an adverse effect on belt strength, if the fineness of the inelastic fiber crimped yarn is less than about 500 dtex, the shrinkage of the stretchable plied yarn becomes too large, and it is easy to handle. Becomes worse.
- the twisting direction of the stretchable ply-twisted yarn during combustion be different from the false twisting direction of the inelastic fiber crimped yarn in order to obtain a woven fabric with a high shrinkage force.
- the twisting direction ⁇ twisting factor at the time of ply twisting may be determined according to necessary characteristics such as appearance and function of the woven fabric.
- the number of ply twists it is necessary to perform ply twisting with a twist coefficient in the range of 1000 to 160 000.However, considering the stability during weaving and the quality of the woven fabric, it is 30 00 to 800 is more preferable. If the twist coefficient is less than 1000, the elastic fiber and the inelastic fiber crimped yarn are likely to be displaced by the rubbing between the prize and the weaving process during the weaving preparation process and the weaving process, resulting in uniform stretchability. It is difficult to obtain a twisted yarn, making it impossible to weave a woven fabric with uniform elongation characteristics and good surface smoothness. During weaving, only the elastic fibers come out of the stretched plied yarn.
- the desired stretchable fabric cannot be obtained, and the object of the present invention may not be achieved.
- the twisting coefficient exceeds 16000, the twisting is too strong and the thickness of the woven fabric becomes thin. If the belt is formed as a toothed belt, the cushioning effect for absorbing noise (impact sound) is obtained. And the extensibility also decreases, and a sufficiently stretchable woven fabric cannot be obtained, and the object of the present invention may not be achieved.
- the twist coefficient is a value obtained by multiplying the square root of the decitex fineness of the stretchable plied yarn by the number of plied twists per meter.
- the fineness that is, the fineness of the elastic fiber before being stretched, is preferably in the range of 20 to 150 dtex, and more preferably in the range of 40 to 80 dtex. If the fineness of the elastic fiber before stretching is less than 20 dtex, the shrinkage force is reduced, and it is difficult to obtain a desired shrink woven fabric. In addition, the strength of the elastic fiber may be insufficient, and may deteriorate during rubber vulcanization, resulting in lower quality. If it exceeds 150 dtex, the elastic fiber remains as an impurity after rubber vulcanization at a high rate, which may adversely affect the durability of the belt.
- Inelastic fiber of stretchable ply-twisted yarn used for the woven fabric for a toothed belt of the present invention is preferably in the range of 40 to: l OOO dtex, and 200 to 500 (16 If it is less than 40 dtex, the proportion of the elastic fiber is large, so that the twisted balloon does not open properly, the twisted yarn tends to be uneven, and the elongation characteristics of the woven fabric may be deteriorated. If it exceeds dtex, the contraction force of the elastic fiber is insufficient due to the high fineness, and the uniformity of the elongation characteristics of the woven fabric may be deteriorated.
- the tension fluctuation range during stretching of the elastic fiber is 0 to 0.1 cN / dtex, and 0 to 0.05 c.
- the NZ dtex range is more preferred. If it exceeds 0.1 cN / dtex, the resulting stretched ply-twisted yarn may have non-uniform elongation properties in the yarn length direction, resulting in a toothed belt with low noise and poor durability.
- a device for controlling a fluctuation in tension during elongation is used as the elastic fiber used for producing the stretchable plied yarn.
- a tension feeder of BTSR Co., Ltd., Memmingai Co., Ltd. This eliminates tension fluctuations due to stretch spots, unwind spots, and the like that are present in the elastic fiber cheese package (outside-to-inner layer difference), and enables a certain amount of yarn to be fed accurately, and it is possible to supply yarn in the yarn length direction. It is possible to obtain stretchable plied yarns with uniform stretchability and has excellent stretchability with less spots. A woven fabric for a toothed belt can be obtained.
- the elastic fiber cheese which is widely used, is rotated at the same speed.
- the stretchable combustible yarn in the woven fabric for a toothed belt of the present invention is treated at a temperature of about 70 to 90 ° C by a method such as a steam set for twisting after twisting in order to improve handleability.
- a heat set of 0 to 60 minutes may be applied.
- the twist set may be subjected to heat setting at a temperature of about 70 to 90 ° C. twice for 20 to 30 minutes.
- the stretchable ply-twisted yarn in the woven fabric for a toothed belt of the present invention is not limited to a composite yarn composed of a mixture of elastic fibers and inelastic fiber crimped yarns.
- Other fiber yarns including the composite yarn may be compounded by means of twisting or the like, or more yarns may be compounded.
- a plurality of the same or different inelastic fiber crimped yarns may be used to be combined with the elastic fiber, and a plurality of elastic fibers may be used to be combined with the inelastic fiber crimped yarn.
- a plurality of elastic fiber crimped yarns may be used in combination.
- a spun yarn or the like made of short fibers may be combined as long as the object of the present application is not impaired. The type and number of mating yarns may be appropriately changed according to the application.
- the stretchable plied yarn used for the woven fabric for a toothed belt of the present invention may be in the longitudinal direction of the toothed belt. It is advisable to use them according to the application in consideration of the elongation, the strength of the component yarns, and the design of the teeth.
- a plying yarn that is stretchable in the warp direction or a woven fabric that uses co-stretching plying yarn in the warp direction in the process of cutting the woven fabric for a toothed belt,
- the advantage is that it is only necessary to force the length, and compared to the case of a woven fabric using stretchable twisted yarn in the weft direction, the number of mouths is reduced and there is no need to prepare many types of length. There is.
- the elongation at break in the woven fabric for a toothed belt of the present invention refers to the elongation at which the woven fabric breaks when the woven fabric is stretched in the elongation direction.
- the elongation percentage of 096 (19999), measured according to the A method (stripping method), must be 50 to 200%.
- the stress value at the initial stage of elongation becomes large, and the fabric does not easily follow the shape of the teeth during vulcanization.
- a belt with a large variation in the distance between the center line of the belt tensile member and the surface of the belt tooth recess) causes a low noise and poor durability.
- it has a breaking elongation of 80 to 200%.
- the coefficient of expansion and contraction variation of the woven fabric for a toothed belt of the present invention is defined as three points of intermediate stress (9.8 N, 19.6 N, 29.4 N) at a woven fabric 5 cm width at any 30 places of the woven fabric. ) Means the value obtained by dividing the deviation in elongation when stretched in the stretching direction by the average elongation.
- the measuring method of elongation is JIS-L
- the A method (stripping method) Read the elongation under stress from the s-s curve and calculate.
- the coefficient of variation of expansion and contraction of the woven fabric for a toothed belt of the present invention is preferably in the range of 0 to 0.15. If the maximum value of the coefficient of expansion and contraction at the three points of intermediate stress exceeds 0.15, the unevenness of elongation causes unevenness in the thickness of the woven fabric and irregularities in the twill line, impairing the surface smoothness and making the teeth stand out.
- the belt becomes poor in performance, the frictional resistance increases, and the air flow worsens.At the same time, noise is generated, and the contact area with the pulley concentrates on a part, causing wear and cracks due to stress concentration. It is easy to occur and may be inferior in durability. Such a phenomenon is suppressed as the expansion / contraction coefficient becomes smaller, and the range of 0 to 0.1 is more preferable, and the range of 0 to 0.05 is still more preferable. This range eliminates unevenness in the thickness of the woven fabric, increases the surface smoothness, and enables the woven twill lines to be arranged in a regular and orderly manner, so that stress concentration does not easily occur and the airflow is not disturbed. As a result, the noise and the durability are improved, and the present invention can be achieved.
- the warp or the weft using the stretchable ply-twisted yarn has two or more continuous floating or sinking yarns in a complete structure.
- the stretchable ply-twisted yarn of the present invention is used, the warp on the woven fabric is interlaced with a plurality of wefts at intervals, as in a twill structure, and a 2Z2 twill structure is typical.
- a 2/1 twill structure, a 3Z2 twill structure, a satin weave, a ridge structure such as a warp / weft ridge, or a combination of these may be used.
- the warp and the weft have a small number of crossover points.
- the twill structure of the woven fabric for a toothed belt of the present invention is preferred, the twill line on the woven fabric is preferably a stretchable woven fabric that is clear and regularly arranged. This has the effect of reducing the friction noise and airflow noise generated when the teeth and the pulley are engaged.
- the friction noise is closely related to the size of the contact area between the belt teeth (textile surface) and the pulley, and the smaller the contact area, the lower the friction resistance and the lower the friction noise. .
- the twill line of the fabric is clear, the installation area is small (line contact), and as a result, the abrasion noise is suppressed.
- the twill lines of the fabric are clear and regularly aligned, the flow of air at the time of contact with the pulley is smoothly discharged along the twill line, reducing air pockets and reducing airflow turbulence (sound). Does not occur. As a result, airflow noise is suppressed.
- the stretchable twisted yarn may be used for only one of the warp and the weft, or may be used for both the warp and the weft.
- the stretchable plied yarn is used for only one of the warp and the weft, for example, when the stretchable plied yarn is used for the weft, the form of the warp is unprocessed raw yarn, twisted yarn, or false twist. It may be a processed yarn or the like.
- the stretchable plied yarn is used for the warp, the form of the weft may be any of raw yarn, twisted yarn, false twisted yarn and the like.
- a woven fabric in which both stretchable ply-twisted yarns and twisted inelastic fiber crimped yarns used for the stretchable ply-twisted yarns are alternately arranged in the warp and Z or weft yarns in a 1: 1 or 1: 2 etc.
- Work such as arranging different types of stretchable ply-twisted yarns or arranging S-twisted or Z-twisted yarns should be designed so that the fabric properties such as elongation according to the application are obtained.
- the surface smoothness of the woven fabric for a toothed belt in the present invention refers to a state in which the warp and weft constituting the woven fabric are bundled on the woven fabric, the arrangement, the yarn interval, and the like are regularly and uniformly arranged. That is, the warp and weft constituting the fabric There is no stagger, large bending, and no disturbance of the single yarns that compose the fibers.
- the PLD variation coefficient of the toothed belt of the present invention is obtained by measuring the PLD (distance between the center line of the belt tension member and the surface of the belt tooth concave portion) at any 30 places, and calculating the deviation as the average value of the PLD.
- the value obtained by dividing the value is preferably in the range of 0 to 0.15.
- the belt side was photographed with a magnifying microscope at a magnification of 50 times, and PLD was read from the magnified photograph and calculated. If the PLD variation coefficient exceeds 0.15, the engagement between the belt teeth and the pulley becomes unstable, and the durability of the belt deteriorates and noise tends to increase.
- the peel strength of the base fabric in the toothed belt of the present invention is an index for evaluating the adhesiveness between the belt rubber portion and the base fabric, and is preferably in the range of 100 to 200 N / 2.54 cm. If it is less than 10 ON / 2.54 cm, the belt will not be durable for a certain period of time and will have poor durability.
- the method for producing a woven fabric for a toothed belt of the present invention has a twist coefficient of 100 to
- An elastic ply-twisted yarn obtained by plying an elastic fiber and a non-elastic fiber crimped yarn at 16000 is woven using a warp and / or a weft, and is subjected to a crimping process.
- a woven fabric for a toothed belt having a breaking elongation of 80% or more can be obtained.
- a weaving machine having a large shrinkage force can be produced by using a loom such as a revival room, an air jet room, a genuine target room, and a projector gnome.
- a temple on the entire surface or a temple having a strong tensile force for the loom.
- handleability can be improved by fixing the starting part of the warp wound around the warp beam with a hot plate or glue to improve handling.
- Weaving preparation can be performed smoothly.
- the vulcanizing process in the method for producing a woven fabric for a toothed belt of the present invention the woven fabric for a toothed belt of the present invention is subjected to a vulcanizing process to shrink the woven fabric after weaving.
- Continuous spreading scouring machine may be used, or a liquid stream type scouring machine with strong fir effect (liquid stream scouring machine, etc.) may be used, and a processing style suitable for the characteristics and use of the greige machine may be selected. .
- a continuous spreading smelter is more appropriate. The shrinkage is completed in a short time due to the excellent stretchability of the stretchable twisted yarn.
- the measurement was performed according to the JIS-L-109 (1977) B method.
- Measure the PLD distance between the center line of the belt tension member and the surface of the concave portion of the belt tooth
- the measurement was performed by taking a photograph of the side of the belt with a magnifying microscope at 50x magnification, reading the PLD from the magnified photograph, and calculating. Less than 0.10 was rated A, 0.10 to 0.15 was rated B, and more than 0.15 was rated C, and A and B were rated as acceptable.
- the toothed belt described in Examples 17 to 32 was prepared using the vulcanized fabric, and a peeling test was performed in accordance with JIS — K—6 256 (19999) to determine the peel strength. I asked. Rank A when the peel strength exceeds 15 ON / 2.54 cm, Rank B when 100 to 150 N / 2.44 cm, and when the ON strength is less than 10 ON / 2.54 cm. The rank was C, and the ranks A and B were judged to be acceptable.
- the adhesive used was an RFL solution (H-NBR latex), and the adhesive treatment conditions were a pick-up rate of 12 to 13 wt%, drying at 160 ° C for 5 minutes, and then drying at 200 ° C. Heat treatment was performed at ° CX for 3 minutes.
- the rubber used was an H—NBR system, and the vulcanization conditions were 150 ° C. for 30 minutes.
- a toothed belt is wound between a drive and driven buries with 18 T teeth, a load of 4 hp is applied, and the motor runs at 300 rpm and 600 rpm at an ambient temperature of 25 ° C.
- the test was performed.
- the microphone was placed 15 cm above the drive pulley in the room where the sound insulation was installed, and the noise at that time was measured.
- a normal sound level meter NA-20 (trade name) manufactured by Rion Co., Ltd., which satisfies the standard of a normal sound level meter conforming to the measurement method JIS-C-1502, was used.
- a rank is less than 90 dB, A rank is 90-95 dB B rank, and when it exceeds 95 dB C rank, 105 dB at 600 rpm Less than A rank, 105 to 110 dB is B rank, and more than 110 dB B is C rank, and A and B rank are passed. Specified.
- a running test was performed under the same conditions as the noise test, except that the ambient temperature was set to 100 ° C. and the number of revolutions was set to 1500 rpm, and the time until cracks were formed in the teeth was measured. The case where the time exceeded 200 hours was rated A, the time between 150 and 200 hours was rated B, and the time less than 150 hours was rated C. The ranks A and B were judged as acceptable.
- Polyurethane elastic fiber made by Asahi Kasei Co., Ltd.
- Polyamide multi-filament fiber made by Asahi Kasei Corporation: trade name: Leona
- a friction type false twisting machine B armag Co., Ltd.
- Z high-speed false-twisting direction
- Z stretching / elongation: 19.1%
- a tension feeder (BTSR, product name: KT FZ25 HPS type), set the yarn feeding tension of the elastic fiber to 7.94 c NZ yarn (drawing ratio is equivalent to 3.0).
- the yarn feeding tension of the inelastic fiber crimped yarn was set to 0.03 c NZ dtex, and the elastic fiber and the inelastic fiber crimped yarn were aligned and twisted on a twisting machine.
- the twisting is performed using a twisting yarn machine (manufactured by Ishikawa Seisakusho Co., Ltd .: Type D TH) at a spindle speed of 500 rpm and a set twist number of 2 OO TZm (twist direction S, twist coefficient 4440).
- the set tension of the elastic fiber at the time of this laying was determined in advance by measuring a stress-elongation curve of the elastic fiber, and from a stress value corresponding to a draw ratio of 3.0.
- the warp is a polyamide multifilament fiber (manufactured by Asahi Kasei Corporation: trade name: Leona). 23 dtex / 35 f (twist 18 OT / m, twisted) In the direction S), a 2/2 twill fabric was woven at 300 rpm using a Revere room (manufactured by Sommet). Next, the obtained greige was subjected to a series of treatments of liquid flow relaxation, scouring, and finning set finishing according to a conventional method.
- the obtained woven fabric has a warp density of 88 yarns / 2.54 cm and a weft density of 67 yarns / 2.54 cm, and has a breaking elongation of 15% in the weft direction.
- the maximum expansion and contraction variation coefficient of the woven fabric in the expansion and contraction direction was 0.02, which was very good.
- Example 1 the warp (twist direction Z) and the weft were replaced with each other, and an air jet room (manufactured by Tsudakoma Kogyo Co., Ltd .: type ZA209) was used.
- the two twill fabrics were woven at a loom rotation speed of 400 rpm.
- the obtained greige was subjected to a series of processes of continuous spreading scouring, drying and finishing in accordance with a conventional method.
- the obtained woven fabric has a warp density of 67 threads Z2.54 cm and a weft density of 85 threads / 2.54 cm, and has a breaking elongation of 140% in the warp direction, as shown in Table 1.
- the maximum coefficient of expansion and contraction of the woven fabric was 0.04, which was very good.
- Example 1 a polyurethane urethane elastic fiber (produced by Asahi Kasei Corp., trade name: Roy force) was used as the elastic fiber in the weft, and a polyketone fiber was used as the inelastic fiber crimped yarn.
- f is a pin-type false twisting machine (Ishikawa Seisakusho: Type I VF-338) which is false twisted at a false twist speed of 50 m / min. Twist number 200 T / m (combustion direction S, twist coefficient)
- the obtained woven fabric had a warp density of 80 yarns / 2.54 cm and a weft yarn density of 79 yarns / 2.54 cm, and had a breaking elongation of 110% in the weft direction. As shown in the figure, the maximum expansion and contraction variation coefficient of the woven fabric was 0.08, which was good.
- the polycarbonate fibers used here were produced by the following method. Completely alternating copolymerization of ethylene and carbon monoxide prepared by a conventional method Intrinsic viscosity 5.9 dl Zg Polyketone polymer, poly.
- the coagulated yarn is subsequently washed with 1% hydrochloric acid, and further washed with water at 30 ° C., wound up at a winding speed of 2.5 mZ, and the resulting filamentous material is washed with 20%. It was dried at 0 ° C. to obtain an undrawn yarn. After drawing the undrawn yarn at the first stage at 225 ° C, the second stage at 240 ° C and the third stage at 250 ° C were performed, and a total of 15 It was drawn five times to obtain a drawn yarn (polyketone fiber) of 33 dtex Z250f.
- Example 3 a polyurethane urethane elastic fiber (produced by Asahi Kasei Co., Ltd .: Roy power) was used as the elastic fiber for the weft yarn.
- Produced by Tallon 4 1 3 dte xZ 250 f is temporarily tentatively fired at 50 m / min with a pin-type false twisting machine (manufactured by Ishikawa Seisakusho: Type IVF-338).
- a twisted yarn Z in the false twisting direction, stretching rate 10.4%
- stretchability of 200 T / m twist coefficient 4190 Twisted yarn was obtained.
- weaving was performed in the same manner as in Example 3, and then the obtained green fabric was subjected to a series of continuous spreading scouring-drying-finishing processes according to a conventional method.
- the obtained woven fabric has a warp density of 78 yarns / 2.54 cm and a weft yarn density of 70 yarns / 2.54 cm, and has a breaking elongation of 90% in the weft direction, as shown in Table 1.
- the maximum coefficient of expansion and contraction of the woven fabric was 0.10, which was good.
- Example 1 the warp density was 86 yarns / hour, except that the number of twists of the stretchable plied yarn was 400 T / m (twisting factor 880, twist direction S). 2.54 cm, weft density 67 threads Z 2.54 cm, with a breaking elongation of 13.8% in the weft direction, and as shown in Table 1, the maximum coefficient of expansion and contraction of the woven fabric is 0 . 05 was very good.
- Example 1 a warp density of 72 yarns was used in the same manner as in Example 1 except that the number of twists of the stretchable ply-twisted yarn was 700 TZm (flame coefficient: 1541, twist direction: S). 4 cm, weft density 67 / 2.54 cm, with a breaking elongation of 60% in the weft direction.As shown in Table 1, the maximum expansion and contraction variation coefficient of the woven fabric was 0.13. It was good.
- Example 1 the warp density was 67 yarns Z2.This was the same as Example 1, except that the number of twists of the stretchable ply-twisted yarn was 800 TZm (burn coefficient 1 716 13; twist direction S).
- the woven fabric had a width of 54 cm and a weft density of 67 yarns Z2.54 cm, a poor elongation at break of 45% in the weft direction, a strong sense of twist, and a lack of bulkiness due to the crimped yarn.
- the maximum expansion / contraction coefficient of this woven fabric was 0.17, which was poor.
- Example 1 a warp yarn was used in the same manner as in Example 1, except that the number of burns of the stretchable plied yarn was set to 40 TZm (twist coefficient 881, twist direction S). Density 8 8 Z 2.54 cm, weft density 67 7 / 2.54 cm, with elongation at break of 148% in the weft direction, but the core of the elastic fiber was lost during weaving. It occurred frequently, and the width difference during shrinking also greatly increased. As a result, the stretch characteristics in the fabric width direction were disturbed, and as shown in Table 1, the maximum stretch variation coefficient of the fabric was 0.26, which was poor.
- Example 1 except that the inelastic fiber was changed to a polyamide multifilament fiber (manufactured by Asahi Kasei Corporation: trade name: Leona) 23 dtex Z 35 f raw yarn (stretch elongation: 1.1%)
- a woven fabric having a warp density of 86 threads 2.55 cm and a weft density of 67 threads Z2.54 cm was obtained.
- a single yarn of inelastic fiber jumped out on the surface in a square shape, and the twill line of the woven fabric was disturbed.
- the elongation property of the woven fabric in the stretching direction was 1331% in elongation at the weft, and as shown in Table 1, the maximum coefficient of variation of the woven fabric was 0.18, which was poor.
- Example 1 curving was performed in the same manner as in Example 1 except that the weaving structure at the time of weaving was changed to a flat structure, and the warp density was 57 yarns, Z 2.54 cm, and the weft yarn density was 57 yarns / A woven fabric measuring 2.54 cm and having a breaking elongation of 40% in the weft direction was obtained.
- the woven fabric was coarse and hard and lacked elongation. The maximum coefficient of expansion and contraction of this fabric was poor at 0.18
- Example 1 the fineness of polyurethane urethane-based fiber (made by Asahi Kasei Corporation: Roy power) was changed to 78 dtex as the elastic fiber to be used, and the yarn feeding tension of the elastic fiber was changed to 7.91 c NZ yarn ( The tension is set to a draw ratio of 2.3) and polyamide multifilament fiber (made by Asahi Kasei Corporation: trade name: Leona) is used as crimped inelastic fiber. The same weaving and shrinking as in Example 1 was performed, except that one was twisted with a twist number of 300 T / m (twist coefficient 4919, twist direction S).
- Example 7 the fineness of a polyurethane-based elastic fiber (made by Asahi Kasei Corporation: Roy Power) was changed to 255 dte X as the elastic fiber to be used, and the yarn feeding tension of the elastic fiber was set to 13.07 cN.
- polyamide multi-filament fiber made by Asahi Kasei Corp .: trade name: LEONA
- inelastic fiber crimped yarn is a friction type of 15 dtex / 35 f
- High-speed false-twisting yarn at a false twisting speed of 550 mZ with a temporary burner manufactured by Barmag: type FK-6) (false-twisting direction is Z, stretching elongation ratio 27.3)
- the same weaving and crimping as in Example 1 were performed, except that the two were twisted at a twist number of 250 TZm (twisting coefficient 4835, twist direction S).
- the maximum expansion / contraction coefficient of this woven fabric was 0.11.
- Example 1 the fineness of a polyurethane-based elastic fiber (produced by Asahi Kasei Corporation: Roy Power, trade name) was changed to 78 dtex as the elastic fiber to be used.
- the filament tension is set to 8.92 c NZ yarn (equivalent to a draw ratio of 3.0), and polyamide multifilament fiber (made by Asahi Kasei Corporation: trade name Leona) is used as the inelastic fiber crimped yarn.
- Example 2 Except that 4 pieces of 2 35 dtex Z 35 f (stretch elongation 19.1%) were twisted with a twist number of 65 TZm (twist coefficient 200, twist direction S). The same weaving and shrinking as in 1 was performed.
- Example 1 the fineness of the elastic fiber used was changed to 22 dtex, the yarn feeding tension of the elastic fiber was set to 4.02 c NZ yarn (equivalent to a draw ratio of 3.0), and the number of twists was 330.
- the same weaving and crimping as in Example 1 was performed, except that the ply was twisted at T / m (twist coefficient 7 211, twist direction S).
- Example 1 as a non-elastic fiber crimped yarn, a polyamide multifilament fiber (manufactured by Asahi Kasei Corporation: trade name: LEONA) 23 35 dtex / 35 f was used as a pin type false twisting machine (manufactured by Ishikawa Seisakusho: type IVF_). The procedure was performed except that the yarn was false-twisted at a false-twisting speed of 50 mZ at 3 3 8) (false twisting direction: Z, stretching / elongation rate: 25.2%). The same weaving and shrinking as in Example 1 was performed.
- a polyamide multifilament fiber manufactured by Asahi Kasei Corporation: trade name: LEONA 23 35 dtex / 35 f was used as a pin type false twisting machine (manufactured by Ishikawa Seisakusho: type IVF_). The procedure was performed except that the yarn was false-twisted at a false-twisting speed of 50 m
- Example 1 weaving and crimping were performed in the same manner as in Example 1 except that the expansion / contraction rate of the inelastic fiber crimped yarn used was changed to 265.5%.
- the strength of the inelastic fiber crimped yarn was slightly reduced due to severe false twisting conditions.
- Polyurethane-based elastic fiber made by Asahi Kasei Corp .: Squid name: squid
- non-elastic fiber crimped yarn Polyamide multi-filament fiber (made by Asahi Kasei Corp .: trade name Leona) 3 4 dte xZ26 f Yarn that has been false-twisted at a false twisting speed of 65 m / min with a friction type preliminary burner (Barmag: type FK-16) Elongation rate of 10.90.3%) and a tension feeder (BTSR, product name: KT FZ25 HPS type) to adjust the yarn feeding tension of the elastic fiber to 5.65 cNZ yarn (stretched) (Equivalent to a magnification of 4.0), the tension of the inelastic fiber crimped yarn is set to 0.03 cN / dtex, and the number of twists of the elastic fiber and the inelastic fiber crimped yarn is 700.
- BTSR tension feeder
- Twisting was attempted at T / m (flammability coefficient 4400, twist direction S). However, since the yarn fineness was too small and the tension of the elastic fiber was excessive, the twisted yarn opening was unstable, and twisted spots occurred. This was subjected to the same weaving and shrinking as in Example 1.
- Polyurethane-based elastic fiber (made by Asahi Kasei Corporation: trade name squid) as elastic fiber 7 8 dtex and polyamide multi-filament fiber as inelastic fiber crimped yarn (made by Asahi Kasei Corporation: trade name: Leona) 23 5 dtex / 35 f is a false twisted yarn (false twisting) at a false twisting speed of 500 m / min with a friction type false twisting machine (Ishikawa Seisakusho: Type IVF-338). Twist direction: Z, stretch / elongation ratio: 19.1%), using 5 tension feeders (BTSR, product name: KT FZ25 HPS type) to adjust the yarn feeding tension of elastic fibers to 8.9.
- BTSR product name: KT FZ25 HPS type
- the expansion and contraction coefficient of variation was 0.12, which was good. Since the twisting state was unstable, the woven twill was somewhat unclear.
- Example 1 weaving and crimping were performed in the same manner as in Example 1, except that the yarn feeding tension of the elastic fiber was changed to 6.82 cN / yarn (equivalent to a draw ratio of 1.7). went.
- the breaking elongation was 4 cm, the weft yarn density was 66, and the weft density was Z2.5.54 cm, in the weft direction, and the elongation at break was slightly inferior in elasticity.
- the maximum coefficient of variation of expansion and contraction of this woven fabric was 0.12, which was good.
- Example 1 weaving and crimping were performed in the same manner as in Example 1, except that the yarn feeding tension of the elastic fiber was changed to 12.71 cNZ yarn (corresponding to a draw ratio of 4.2). went.
- the obtained woven fabric had a warp density of 91 yarns / 2.54 cm, a weft yarn density of 67 yarns and 2.54 cm, and a breaking elongation of 173% in the weft direction. The coefficient was 0.13. Since the twisting state was unstable, the woven twill was slightly unclear.
- Example 1 an elastic fiber cheese was placed on two feed rolls so that the stretch ratio of the elastic fiber was 3.0, and the elastic fiber was fed by rolling to obtain an elastic ply twisted yarn. Other than that, weaving and shrinking were performed in the same manner as in Example 1.
- Example 1 the fineness of a polyurethane-based elastic fiber (manufactured by Asahi Kasei Corporation: Roy Power) was changed to 17 dtex as the elastic fiber to be used, and the yarn feeding tension of the elastic fiber was 3.22 cN / yarn. (Equivalent to a draw ratio of 3.0), and a polyamide multifilament fiber (manufactured by Asahi Kasei Corporation: trade name: Leona) is used as a crimped inelastic fiber. (19.1%) and one strand were twisted with a twist number of 300 T / m (twist coefficient 4654, twist direction S), except that weaving and crimping were performed in the same manner as in Example 1. went.
- a polyurethane-based elastic fiber manufactured by Asahi Kasei Corporation: Roy Power
- Example 18 is a toothed belt made using the woven fabric of Example 1, and as shown in Table 3, due to the effect of the woven fabric for a toothed belt of the present invention, a toothed belt having excellent performance was obtained. can get.
- Example 19 is a toothed belt made using the woven fabric of Example 2, and as shown in Table 3, due to the effect of the woven fabric for a toothed belt of the present invention, a toothed belt having excellent performance was obtained. A belt is obtained.
- Example 20 is a toothed belt made using the woven fabric of Example 3, and as shown in Table 3, the effect of the woven fabric for a toothed belt of the present invention resulted in a toothed belt having excellent performance. can get.
- Example 21 is a toothed belt made using the woven fabric of Example 4, and as shown in Table 3, due to the effect of the woven fabric for a toothed belt of the present invention, a toothed belt having excellent performance was obtained. can get.
- Example 22 is a toothed belt made using the woven fabric of Example 5, and as shown in Table 3, the effect of the woven fabric for a toothed belt of the present invention resulted in a toothed belt having excellent performance. can get.
- Example 23 is a toothed belt made using the fabric of Example 6. Yes, as shown in Table 3, the effect of the woven fabric for a toothed belt of the present invention provides a toothed belt having excellent performance.
- Comparative Example 6 is a toothed belt made using the woven fabric of Comparative Example 1, which has no woven fabric thickness (bulkness) and a small cushioning effect of the inelastic fiber crimped yarn. As shown in the figure, no high performance was obtained in terms of noise and durability.
- Comparative Example 7 is a toothed belt made by using the woven fabric of Comparative Example 2, in which the non-elastic crimped yarn was disturbed on the woven fabric surface due to insufficient combustion, and the neatness of the twill wire was observed. Unclear without any. Elastic fibers are sometimes broken. As a result, the maximum value of the variation coefficient of expansion and contraction of the woven fabric is large, and uniform elongation along the tooth shape cannot be obtained.As a result, as shown in Table 3, the PLD variation coefficient increases and various performances decrease. Was.
- Comparative Example 8 is a toothed belt made using the woven fabric of Comparative Example 3, and because the maximum expansion and contraction variation coefficient of the woven fabric was large, uniform elongation along the tooth pattern could not be obtained. As shown in Table 3, the PLD variation coefficient was large, and various performances were low.
- Comparative Example 9 is a toothed belt made using the woven fabric of Comparative Example 4, and the uniform elongation along the tooth pattern was not obtained due to the low elongation rate of the woven fabric. As shown in the figure, the coefficient of variation of the PLD was large, and the performance was low. Due to the flat structure, the thickness of the woven fabric is thin, and the cushioning effect of the inelastic fiber crimped yarn cannot be sufficiently obtained.
- Example 24 is a toothed belt made using the fabric of Example 7. Yes, as shown in Table 3, the effect of the woven fabric for a toothed belt of the present invention provides a toothed belt having excellent performance.
- Comparative Example 10 is a toothed belt made using the woven fabric of Comparative Example 5, in which the twill line on the woven fabric surface was very disturbed, and the twill line was also lacking in order. It was poor with 95 NZ 2.5 4 cm.
- the toothed belt was cut in the width direction, and the cross-section of the stretched ply-twisted yarn was observed with a magnifying microscope. As a result, a large amount of elastic fiber residue remained and was in a poor state.
- the portion of the elastic ply twisted yarn where the elastic fiber was supposed to be present was hollowed out, and rubber penetrated into the hollow, and the disorder of the single yarn of the inelastic fiber crimped yarn was conspicuous.
- Example 25 is a toothed belt made using the woven fabric of Example 8, and as shown in Table 3, due to the effect of the woven fabric for a toothed belt of the present invention, a toothed belt having excellent performance was obtained. can get.
- Example 26 is a toothed belt made using the woven fabric of Example 9, and as shown in Table 3, due to the effect of the woven fabric for a toothed belt of the present invention, a toothed belt having excellent performance is provided. A belt is obtained.
- Example 27 is a toothed belt made using the woven fabric of Example 10 and, as shown in Table 3, a tooth having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. The resulting belt is obtained.
- Example 28 is a toothed belt made using the woven fabric of Example 11 and, as shown in Table 3, a tooth having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. The resulting belt is obtained. (Example 29)
- Example 29 is a toothed belt made using the woven fabric of Example 12 and as shown in Table 3, a toothed belt having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. A belt is obtained.
- Example 30 is a toothed belt made using the woven fabric of Example 13 and, as shown in Table 3, a toothed belt having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. A belt is obtained.
- Example 31 is a toothed belt made using the woven fabric of Example 14; as shown in Table 3, a toothed belt having excellent performance due to the effect of the toothed woven fabric of the present invention was obtained.
- Example 32 is a toothed belt made using the woven fabric of Example 15 and as shown in Table 3, a toothed belt having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. A belt is obtained.
- Example 33 is a toothed belt made using the woven fabric of Example 16 and, as shown in Table 3, a toothed belt having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. A belt is obtained.
- Example 34 is a toothed belt made using the woven fabric of Example 17 and as shown in Table 3, a toothed belt having excellent performance due to the effect of the woven fabric for a toothed belt of the present invention. A belt is obtained. 1 Construction of stretchable plied yarn and elongation characteristics of woven fabric
- the woven fabric for a toothed belt of the present invention in which an elastic ply twisted yarn made of an elastic fiber and a non-elastic fiber crimped yarn is used as a weft or a warp, or both a warp and a weft of a woven fabric, has a moderate crimped yarn. Due to the shock effect, improvement in durability due to noise absorption and impact mitigation can be expected. In addition, since the inelastic fiber shrinks uniformly as a stretchable twisted yarn even when the elastic fiber shrinks by using the crimped yarn, the maximum coefficient of expansion and contraction variation in the direction of expansion and contraction of the woven fabric decreases. Since it stretches evenly and uniformly, it becomes possible to finish it evenly while having a certain thickness along the belt teeth during rubber vulcanization. As a result, the twill lines of the fabric are clearly and orderly arranged.
- the effect of suppressing the friction noise by reducing the frictional resistance with the pulley and the effect of suppressing the airflow noise by reducing the air pockets can be expected, and further improvements in durability and low noise can be expected.
- false twist processing conditions fine crimping
- the toothed belt using this woven fabric has a uniform tooth surface, realizes low noise and high durability, enables a reduction in the belt width, and saves space (compact design, weight reduction).
- the present invention can be used for various other purposes.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/477,125 US20040152551A1 (en) | 2001-05-16 | 2002-05-15 | Woven fabric for toothed belt |
| EP02769429A EP1388598B1 (en) | 2001-05-16 | 2002-05-15 | Woven fabric for toothed belt |
| JP2002590151A JPWO2002092894A1 (ja) | 2001-05-16 | 2002-05-15 | 歯付きベルト用織物 |
| DE60235620T DE60235620D1 (de) | 2001-05-16 | 2002-05-15 | Gewebe für zahnriemen |
| AT02769429T ATE460519T1 (de) | 2001-05-16 | 2002-05-15 | Gewebe für zahnriemen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-146870 | 2001-05-16 | ||
| JP2001146870 | 2001-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002092894A1 true WO2002092894A1 (en) | 2002-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/004714 Ceased WO2002092894A1 (en) | 2001-05-16 | 2002-05-15 | Woven fabric for toothed belt |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20040152551A1 (ja) |
| EP (1) | EP1388598B1 (ja) |
| JP (1) | JPWO2002092894A1 (ja) |
| CN (1) | CN100590244C (ja) |
| AT (1) | ATE460519T1 (ja) |
| DE (1) | DE60235620D1 (ja) |
| WO (1) | WO2002092894A1 (ja) |
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| JP2006183160A (ja) * | 2004-12-27 | 2006-07-13 | Toyo Tire Cord Kk | ゴム補強用織布の接着剤処理方法およびその装置 |
| JP2009127173A (ja) * | 2007-11-28 | 2009-06-11 | Teijin Fibers Ltd | 歯付きベルト用帆布及びそれを用いた歯付きベルト |
| JP2015193942A (ja) * | 2014-03-31 | 2015-11-05 | 東レ・デュポン株式会社 | 歯付きベルト用織物 |
| US20240337046A1 (en) * | 2022-12-16 | 2024-10-10 | Regents Of The University Of Michigan | Aramid nanofiber filaments and related methods |
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| JP3561267B2 (ja) * | 2000-06-27 | 2004-09-02 | 株式会社ケイビーエムジェイ | 情報提供システム、情報提供方法および記憶媒体 |
| WO2007114052A1 (ja) * | 2006-04-05 | 2007-10-11 | Bando Chemical Industries, Ltd. | 伝動ベルト用心線及び伝動ベルト |
| WO2007142318A1 (ja) * | 2006-06-02 | 2007-12-13 | Teijin Fibers Limited | 歯付きベルト用帆布及びそれを含む歯付きベルト |
| US8152380B2 (en) * | 2006-07-07 | 2012-04-10 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
| US7749120B2 (en) * | 2006-11-03 | 2010-07-06 | Dayco Products, Llc | Power transmission belt |
| DE102007042917B4 (de) | 2007-09-08 | 2020-06-18 | Contitech Antriebssysteme Gmbh | Biegeelastischer Antriebsriemen, oder Keilrippenriemen, mit einer Textilauflage auf seiner verschleißanfälligen Arbeitsseite |
| PL2201266T3 (pl) | 2007-09-14 | 2019-03-29 | Gates Corporation | Żebrowany pas klinowy i sposób jego wytwarzania |
| CN102472363A (zh) * | 2009-07-02 | 2012-05-23 | 盖茨公司 | 改善的用于齿动力传动带的织物和带 |
| EP2549143B1 (de) | 2011-07-21 | 2019-01-23 | ContiTech Antriebssysteme GmbH | Kraftübertragungsriemen, insbesondere Keilrippenriemen |
| GB201116036D0 (en) * | 2011-09-16 | 2011-11-02 | Heathcoat Fabrics Ltd | Fabric |
| EP3034906B1 (en) * | 2014-12-19 | 2021-06-30 | ContiTech Antriebssysteme GmbH | Belt comprising a textile covering |
| EP3329041A1 (en) * | 2015-07-29 | 2018-06-06 | Gates Corporation | Synchronous belt with tough fabric |
| JP6693673B2 (ja) * | 2015-08-25 | 2020-05-13 | ニッタ株式会社 | 繊維機械用ベルト |
| JP6748131B2 (ja) * | 2017-04-27 | 2020-08-26 | 三ツ星ベルト株式会社 | はす歯ベルト伝動装置 |
| KR102224898B1 (ko) * | 2017-06-29 | 2021-03-05 | 코오롱인더스트리 주식회사 | 폴리우레탄 매트릭스 수지와의 접착성이 우수한 아라미드 원단 |
| IT202000005740A1 (it) * | 2020-03-18 | 2021-09-18 | Costa S R L | Tessuto aderizzato per una cinghia ad elevate prestazioni e procedimento per la realizzazione del tessuto aderizzato |
| IT202300024999A1 (it) * | 2023-11-24 | 2025-05-24 | Costa S R L | Macchina e metodo per la realizzazione di un elemento tubolare in tessuto aderizzato per una cinghia o un nastro ad elevate prestazioni |
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|---|---|---|---|---|
| EP0099205A1 (en) * | 1982-07-05 | 1984-01-25 | Mitsuboshi Belting Ltd. | Woven fabric for belt |
| JPS59222639A (ja) * | 1983-05-30 | 1984-12-14 | Ashimori Ind Co Ltd | 歯付きベルト用基布 |
| JPH04146235A (ja) * | 1990-10-09 | 1992-05-20 | Teijin Ltd | 曲げ反撥性に優れた織編物 |
| JPH05118386A (ja) * | 1991-10-28 | 1993-05-14 | Bando Chem Ind Ltd | 歯付ベルト |
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| CH582260A5 (ja) * | 1975-06-06 | 1976-11-30 | Thiokol Corp | |
| JPS61167736A (ja) * | 1985-01-18 | 1986-07-29 | Bando Chem Ind Ltd | 動力伝動用ベルト |
| JPH071054B2 (ja) * | 1990-04-24 | 1995-01-11 | 三ツ星ベルト株式会社 | 歯付ベルト |
| EP0637704B1 (en) * | 1993-02-23 | 1997-07-30 | Unitta Co., Ltd. | Toothed belt |
| WO1998045617A1 (en) * | 1997-04-07 | 1998-10-15 | Ashimori Industry Co., Ltd. | Toothed belt |
-
2002
- 2002-05-15 EP EP02769429A patent/EP1388598B1/en not_active Expired - Lifetime
- 2002-05-15 AT AT02769429T patent/ATE460519T1/de not_active IP Right Cessation
- 2002-05-15 JP JP2002590151A patent/JPWO2002092894A1/ja active Pending
- 2002-05-15 CN CN02809968A patent/CN100590244C/zh not_active Expired - Fee Related
- 2002-05-15 US US10/477,125 patent/US20040152551A1/en not_active Abandoned
- 2002-05-15 DE DE60235620T patent/DE60235620D1/de not_active Expired - Lifetime
- 2002-05-15 WO PCT/JP2002/004714 patent/WO2002092894A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0099205A1 (en) * | 1982-07-05 | 1984-01-25 | Mitsuboshi Belting Ltd. | Woven fabric for belt |
| JPS59222639A (ja) * | 1983-05-30 | 1984-12-14 | Ashimori Ind Co Ltd | 歯付きベルト用基布 |
| JPH04146235A (ja) * | 1990-10-09 | 1992-05-20 | Teijin Ltd | 曲げ反撥性に優れた織編物 |
| JPH05118386A (ja) * | 1991-10-28 | 1993-05-14 | Bando Chem Ind Ltd | 歯付ベルト |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183160A (ja) * | 2004-12-27 | 2006-07-13 | Toyo Tire Cord Kk | ゴム補強用織布の接着剤処理方法およびその装置 |
| JP2009127173A (ja) * | 2007-11-28 | 2009-06-11 | Teijin Fibers Ltd | 歯付きベルト用帆布及びそれを用いた歯付きベルト |
| JP2015193942A (ja) * | 2014-03-31 | 2015-11-05 | 東レ・デュポン株式会社 | 歯付きベルト用織物 |
| US20240337046A1 (en) * | 2022-12-16 | 2024-10-10 | Regents Of The University Of Michigan | Aramid nanofiber filaments and related methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100590244C (zh) | 2010-02-17 |
| EP1388598A4 (en) | 2005-05-18 |
| CN1509355A (zh) | 2004-06-30 |
| JPWO2002092894A1 (ja) | 2005-03-10 |
| EP1388598A1 (en) | 2004-02-11 |
| EP1388598B1 (en) | 2010-03-10 |
| DE60235620D1 (de) | 2010-04-22 |
| ATE460519T1 (de) | 2010-03-15 |
| US20040152551A1 (en) | 2004-08-05 |
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