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Woren fabric for toothed belt

A technology for toothed belts and fabrics, which is applied in the field of fabrics for toothed belts, can solve the problems that twill fabrics cannot be obtained, the adhesion between fabrics and rubber is easily deteriorated, and the twill lines of fabrics are not neat, so as to save the space in the engine and save the original cost. Effects of small reduction in filament strength and excellent elongation properties

Inactive Publication Date: 2004-06-30
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the non-elastic yarn is directly used as raw yarn (without crimping), in the scouring and relaxation process to make the fabric extensible, the filaments constituting the inelastic fiber protrude in an angular shape, and a beautiful twill pattern cannot be obtained. For fabrics, the elongation fluctuates greatly, and the surface smoothness of the teeth of the toothed belt becomes poor
In order to suppress the protruding angle of the fabric surface, if the number of twists of the stretchable twisted yarn is increased, it can be alleviated to a certain extent, but due to the way of twisting into a tight yarn, a fabric with sufficient stretchability cannot be obtained. Get the fabric nicely along the toothed belt
In addition, the proportion of elastic fibers contained in the warp or weft is relatively large. As seen in the examples, with a combination of large denier elastic fibers exceeding 100dtex, the helical structure of the non-elastic fibers is changed by the elastic fibers during twisting. Large, but when the rubber is vulcanized, the elastic fiber melts out. Since only the helical structure of the non-elastic fiber remains on the surface of the tooth part, the smoothness of the tooth part surface of the toothed belt deteriorates, and the twill pattern of the fabric becomes irregular.
If the proportion of elastic fibers is increased, the elastic fibers melted by the heat during rubber vulcanization will become impurities, and there is a problem that the adhesiveness between the fabric and rubber is likely to deteriorate.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Urethane-based elastic fibers (manufactured by Asahi Kasei Co., Ltd.: trade name: Roika) 44 dtex as elastic fibers and polyamide multifilaments (manufactured by Asahi Kasei Co., Ltd.: trade name Leona) 235 dtex / 35f as inelastic crimped yarns are used Friction type false twisting machine (Barmag company manufacture: Model FK-6) carries out 2 strands (false twisting process twisting direction Z, telescopic elongation 19.1%) of high-speed false twisting process with false twisting speed 500m / min, with tension Loading machine (manufactured by BTSR company, product name KTF / 25HPS type) sets the tension of elastic fiber feeding to 7.94cN / yarn (equivalent extension ratio is 3.0), and sets the feeding tension of non-elastic fiber crimped silk to 0.03cN / Yarn, the elastic fiber and the non-elastic fiber crimped yarn are aligned on the twisting machine and then twisted. When twisting, use a twisting machine (manufactured by Ishikawa Seisakusho: Model DTH), with a spindle rotatio...

Embodiment 2

[0109] In Example 1, weft yarns were used instead of warp yarns (twisting direction Z), and a 2 / 2 twill fabric was woven with an air-jet loom (manufactured by Tsudakoma Industry Co., Ltd.: model ZA209) at a loom rotation speed of 400 rpm. Then, the gray cloth obtained is subjected to a series of treatments such as continuous expansion and scouring-drying-finishing in the usual way. The warp density of the obtained fabric is 67 / 2.54cm, the weft density is 85 / 2.54cm, and the elongation at break in the warp direction is 140%. As shown in Table 1, the maximum expansion coefficient of the fabric is 0.04, which is very good. of.

Embodiment 3

[0111] In Example 1, polyurethane elastic fibers (manufactured by Asahi Kasei Co., Ltd.: trade name ロイカ) 44dtex as elastic fibers and polyketone fibers 335dtex / 250f as inelastic fiber crimped yarns were used for needle false twisting. Machine (manufactured by Ishikawa: Model IVF-338), carries out the thread sliver (false twist twist direction Z, telescopic elongation 51.0%) of false twist processing with the false twist speed of 50m / min, obtains twist number 200T / m (twisting direction S, twist coefficient 3740) stretchable twisted yarn. The fineness of the elastic fiber in this stretchable twisted yarn is 44 / 3.0=14.7dtex, and its proportion is 4.2wt%.

[0112] Then carry out the same weaving as in Example 1, and carry out a series of treatments of continuous expansion scouring-drying-finishing to the gray cloth obtained in a general method, and the obtained fabric warp density is 80 / 2.54cm, and the weft density is 79 strands / 2.54cm, the weft elongation at break is 110%, as s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A woven fabric for a toothed belt prepared by using stretchable aligned and twisted yarns as warp yarns and / or weft yarns, in which an elastic fiber and a non-elastic fiber textured yarn are twisted or mixed together, the twist multiplier of the stretchable aligned and twisted yarn is in a range from 1000 to 16000, and a breaking elongation of the woven fabric in the stretchable direction thereof is in a range from 50 to 200%. The toothed belt obtained from this woven fabric is excellent in noise-elimination ability and durability, and allows a reduction in the size of a device and a reduction in the weight thereof.

Description

technical field [0001] The present invention relates to a fabric used on the tooth surface of a toothed belt and its manufacturing method, a toothed belt with the fabric bonded to the tooth surface, and a stretchable twisted yarn used for the fabric. technical background [0002] Conventionally, toothed belts have been used in a variety of applications ranging from the machinery industry to home appliances, and are particularly widely used as drive components that transmit the driving force of an automobile engine to the rotation of the axle. However, when the car is running at high speed, the noise becomes louder. From the perspective of the people who ride the car and the surrounding environment, it is strongly required to improve the performance of reducing noise for the toothed belt. In addition, in order to improve the reliability of the engine, it is necessary to improve Space saving is strongly demanded for durability, compactness of the engine room, and improvement o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D03D1/00D03D15/56F16G1/28
CPCF16G1/28D10B2505/02D03D1/00D03D15/08D03D1/0094D03D15/56
Inventor 奥野登起男山本晴彦
Owner ASAHI KASEI KK
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