Yarn clearer
Encyclopedia
A yarn clearer is a device to remove faults (thick places, thin places, foreign matter) from the yarn
. Yarn clearing improves the quality of the spun yarn and hence of the cloth made of it. Clear, uniform yarn is especially important for smooth operation of high-speed textile machinery.
Yarn clearing is usually part of the yarn winding step. The yarn from a number of spinning
bobbin
s, called 'cops', is wound on to larger packages called 'cones' for subsequent processing into fabric. During the winding the yarn was traditionally passed through the narrow slit in a steel plate of a yarn clearer or slub-catcher. The object was to catch thick places, or slubs, which occurred when the spinning process suffered an aberration, and to prevent them being woven into the fabric to present unsightly faults.
In modern textile industry
, after detecting the faults, the clearer cuts the faulty pieces from the yarn, and after that the piecing device joins the cut ends.
Yarn
Yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery and ropemaking. Thread is a type of yarn intended for sewing by hand or machine. Modern manufactured sewing threads may be finished with wax or...
. Yarn clearing improves the quality of the spun yarn and hence of the cloth made of it. Clear, uniform yarn is especially important for smooth operation of high-speed textile machinery.
Yarn clearing is usually part of the yarn winding step. The yarn from a number of spinning
Spinning (textiles)
Spinning is a major industry. It is part of the textile manufacturing process where three types of fibre are converted into yarn, then fabric, then textiles. The textiles are then fabricated into clothes or other artifacts. There are three industrial processes available to spin yarn, and a...
bobbin
Bobbin
A bobbin is a spindle or cylinder, with or without flanges, on which wire, yarn, thread or film is wound. Bobbins are typically found in sewing machines, cameras, and within electronic equipment....
s, called 'cops', is wound on to larger packages called 'cones' for subsequent processing into fabric. During the winding the yarn was traditionally passed through the narrow slit in a steel plate of a yarn clearer or slub-catcher. The object was to catch thick places, or slubs, which occurred when the spinning process suffered an aberration, and to prevent them being woven into the fabric to present unsightly faults.
In modern textile industry
Textile industry
The textile industry is primarily concerned with the production of yarn, and cloth and the subsequent design or manufacture of clothing and their distribution. The raw material may be natural, or synthetic using products of the chemical industry....
, after detecting the faults, the clearer cuts the faulty pieces from the yarn, and after that the piecing device joins the cut ends.