Yarn Examining Machine

DESCRIPTION / TECHNICAL SPECIFICATIONS

This is a Yarn Examining Machine, an instrument designed for visual sample preparation to assess the overall appearance of yarn. This device works by winding yarn onto a black board at a pre-determined density to facilitate the visual inspection of evenness, hairiness, neps, and other imperfections in accordance with industry standards like ASTM D2255. The following are its detailed technical specifications.

This instrument is available in several configurations to meet various testing needs, with a choice of different black board sizes, both quadrate and tapered. Its key feature is the ability to control the yarn winding density. Users can select from a very wide range of density options, from 7 up to 65 wraps per centimeter, to create the optimal yarn board appearance for the grading process, depending on the yarn count being tested.

The winding performance is designed to produce neat and consistent samples. Some configurations offer an adjustable rotational speed of up to 400 RPM, providing the flexibility to handle various yarn types, from delicate and fragile to more robust ones, without damaging or altering their characteristics during the sample preparation process.

By providing a standardized and repeatable method for sample preparation, this machine is a fundamental tool for the visual grading of yarn appearance. By winding the yarn uniformly onto a contrasting black board, various imperfections such as neps, slubs, the degree of hairiness, and thickness variations become very easy to see, count, and grade. This makes it an indispensable device for spinning mills to ensure and maintain the visual quality grade of their yarn products.