HLD-CJ-A-HUALIANDA

like two locks on each other, hence the name lock stitch. This stitch is used on cotton, woollen fabrics or leather with a low shrinkage rate and has the same shape on the front and back as an imaginary line. The stitches are densely distributed and the sewing fastness generally exceeds that of hand sewing. The \x0d\x0a chain stitch is made up of thread loops that are self-connected or interconnected and is commonly used as a single chain stitch, a double chain stitch and a three-wire overlock stitch. This type of stitch is characterised by its elasticity and its ability to stretch and contract with the sewing material without breaking the stitching, and is suitable for threaded garments made from elastic fabrics or for overlocked products and garment blanks that are easily loosened. \x0d\x0a In addition, sewing machines can be divided according to their use into machines for domestic, industrial and service industries, and according to the form of drive they can also be divided into hand-crank sewing machines, foot-operated sewing machines and electric sewing machines.

Loom, also called spinning machine, loom, cotton spinning machine, etc., the ancient loom is relying on human-driven loom. Loom is the full name of the tool that weaves the thread, silk, hemp and other raw materials into silk thread after processing into fabric. Like spinning pendant, spinning wheel, spindle, pedal loom, and modern mechanical loom, modern CNC automatic loom, etc. The development of ancient and modern textile processes and equipment are designed in response to the textile raw materials, therefore, raw materials have an important position in the textile technology. The ancient world for the textile fiber are natural fibers, generally (wool, hemp, cotton) three short fibers.
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