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The process of connecting a piece of clothing or a decorative pattern on the surface of a piece of clothing is what we call sewing.For sewing effect, if you want to achieve perfect, in addition to the required performance good and the operator skilled sewing machine itself, also must ensure that the needle, thread and sewing the material specifications match to form correct stitch.
1 the stitches
Sewing machine needle is also called sewing needle, machine needle, it is the important seaming machine of sewing machine, the variety of machine needle only domestic has several hundred kinds.In order to achieve the ideal fit of sewing needle and seaming and sewing thread, it is necessary to choose the right needle.The type of needle is determined by the type of sewing machine and the material of the fabric.The nature of the machine determines the selection of the needle, and the different types of machines should be equipped with different models and specifications.Regardless of the type of machine, the sewing process should be based on the quality of the sewn material and the specification of the needle, namely the pin number.Generally speaking, needle for textiles and knitwear, its tip are ground into a cone, sewing leather and sewing the material is similar to that of the use of special shape pins, such as the spear, ling pointed, twisting, pointed and so on, purpose is to increase the intensity of needle, obtain good sewing effect.
The selection conditions of machine needle are as follows:
(1) when considering the strength of the needle itself, use a thinner needle as far as possible.
(2) small puncture resistance of thin material is small. To prevent needle hole in the seam, it can affect the appearance of sewn material and choose thinner needle.
(3) the penetration resistance of thick material is large, so as to prevent the broken needle should choose a thicker machine needle with strong stability, and the thicker needle is not easy to stab the thicker seaming fiber.
(4) the stitches should be smooth, without sharp thorns, rust spots, and proper acuity to prevent damage to seaming fibers.
2 stitches
When the needle is selected, select the stitching.