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Loepfe offers yarn clearers for open-end spinning
27
Aug '15
The 3N1 and 1N1 yarn clearers from Loepfe offer a fast and safe possibility, to detect faults during open end spinning process, resulting in a higher quality of the produced yarn.

Open end spinning has the advantage of high production output as winding is not necessary, while a yarn clearer is often not installed.

On the other hand, periodic occurring yarn faults in open-end spun yarns can cause quality defects in the woven end product.

“Due to the periodicity, even small variations in yarn thickness are visible in the woven fabric, the so called Moiré effect,” Loepfe said in a press release.

“The solution to avoid this effect is the installation of optical yarn clearers in open-end spinning machines,” the Switzerland based textile accessories producer informed.

“Yarn clearers 3N1 and 1N1 from Loepfe utilise an optical sensing technology and are able to detect yarn faults in a very reliable way,” it explained.

Loepfe´s optical yarn clearers cover open-end yarn counts from Nec 3 to Nec 60 at a maximum spinning speed up to 400 metre per minute with one sensing head.

Compared to the 1N1, the 3N1 offers an additional detector for foreign matter and a triboelectric sensor for detection of synthetic foreign matter.

“The optical sensing technology is not sensitive to changing humidity, which can occur quite often in spinning mills, while change in temperatures show no effect on the sensor either,” the company noted.

The central unit provides and analyses all quality and production related data on its large touch screen.

Periodical faults, which could result in Moiré effect and which cannot be detected during subsequent laboratory quality control, are visualised as well.

“In general, the use of a yarn clearer eliminates the need for laboratory quality controls of the spun yarn and the user has the advantage of 100 per cent quality control and the possibility of fast reaction times,” it noted. (AR)

Fibre2Fashion News Desk – India

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