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Thread Finishing
Dec 17, 2018

Thread finish can have several meanings in the thread industry. Finishing can refer to any additional process that a thread goes through to alter its original physical characteristics. Examples would include mercerized, glazed, bonded and anti-wick finishes. Finish can also refer to the lubrication put on the thread prior to winding for the purpose of protecting the thread against needle heat and giving the thread good lubricity characteristics as it passes through the sewing machine.


“Soft” spun cotton threads are converted to “Mercerized” threads when they are passed through an additional process where they are treated in a caustic solution under controlled tension. This process causes the fibers to swell, resulting in greater affinity for dye penetration. Mercerization increases the luster of cotton threads and at the same time increases their strength.


“Soft” spun cotton threads can also be converted to “Glazed” threads by coating the threads with starches, waxes, and special chemicals under controlled heat and then brushing or polishing them to a high luster. The result is a glossy, hard finish that protects the thread from abrasion and enhances its ply security.


“Bonded” finish is an additional process performed on multifilament polyester and nylon threads where a special resin is added that encapsulates the filaments forming a tough, smooth protective coating on the surface of the thread. This bonding process adds significantly to the thread’s ability to resist abrasion and greatly enhances ply security during sewing.


“Anti-wick” finish is an additional process where “soft” threads are treated with special anti-wick chemicals to enhance the threads resistance to water migration.


Thread finish or lubricant is generally added to the thread during the final winding process. Both the amount and type of lube are critical to proper sewability. Generally, the finer the thread size, the less lube that is required on the thread. Threads required to penetrate heavier and more dense fabrics will require more thread lubricant to product the thread from needle head and enhance sewing performance.


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    GUANGZHOU LIQI TEXTILE TECHNOLOGY CO., LTD

    Add: Room  A-9026, Tianrui Plaza ,No.397 Jianpeng Road,Baiyun District,Guangzhou,China

    TEL.: +86 020 3623 1839 

    Phone & Webchat: +86 13538824646 

    +86 13539482515

    Email: david@liqitextile.com   



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