Studying On The Section Shape And Section Size Proportion Of Air Channel To Thread Route Of Interlacer

The technology of interlacing is a method to improve the combination character offilament-bundles, utilizing the high-speed swirl air that ejects to the feeding filaments in ainterlacing nozzle, and make filaments entangle with each other. There are many advantages ofinterlacing process, such as short process, high efficiency, low cost, no pollution and so on.What's more, it is widely used as a method of developing new products. By now, most of theresearches on interlacing nozzle are about silk channel, and few research is found on the shapeof air channel. For this reason, this paper made related research on the shape and area ofnozzle's air channel section.The best ratio of section size of air channel to silk channel is between 1/2 and 1/6according to former researches. Five kinds of silk channel and two kinds of air channel indifferent section shape were chosen to match each other respectively. The section shapes of airchannel included circle and square. And the section size of air channel was made in three types,which were the half, the quarter and the one sixth of that of air channel. Process characters (airpressure, feed ratio, yarn speed) were varied to test the property of nozzle. The effect of thesection shape of air channel on interlacing process was analyzed, and it is found that when thesection shape of the air channel is circle, ellipse, upside-down triangle, or triangle, then the airchannel will be suitable to match an air channel with square section shape, and that when thesection shape of the air channel is double-circle, the air will be suitable to match an air channelwith circular section shape. The ratio of the silk channel to air channel was also discussed. Thebest effect of interlacing process is found in following conditions: firstly, when the sectionshape of the air channel is circle, ellipse or triangle, the section size of air channel is the onefourth of that of silk channel. Secondly, when the section shape of the air channel isdouble-circle, the section size of air channel is the one sixth of that of silk channel. Finally,when the section shape of the air channel is upside-down triangle, the section size of airchannel is the one third of that of silk channel.Moreover, to shorten the ratio range of section size of air channel to silk channel,nozzles with circle-sectioned air channel were made according as four kinds of section shapeof silk channel. The size of air channel is from the one second to the one sixth of that of silkchannel. The effect of the section area of nozzle's air channel to interlacing process wasanalyzed. It is found that the number of tangles is much higher under the following conditionsthan others: the first, when the section shape of the silk channel is circle or ellipse, the sectionsize of air channel is from the one third to the one fifth of that of silk channel. The second,when the section shape of the silk channel is double-circle, the section size of air channel is theone second, or the one fourth, or the one sixth that of silk channel. The last, when the sectionshape of the silk channel is upside-down triangle, the section size of air channel is the onesecond, or the one third, or the one fourth of that of silk channel.