Flat seam sewing technology
Flat sewing is the most basic sewing process, which can complete the sewing function of sewing materials. The lock stitch formed by sewing materials is characterized by its difficulty in spreading, good safety and small flexibility. For sewing materials suitable for weaving process, sewing machines are all kinds of flat sewing machines. According to the technological requirements of sewing products, sewing machines with different platforms can be selected, such as flat sewing machine (the most basic flat sewing machine, suitable for sewing flat sewing materials), barrel sewing machine (suitable for sewing circular arc sewing materials), upright sewing machine (suitable for sewing special shapes such as small circular arc sewing materials) and other flat sewing machines.
Flat sewing machines with different feeding modes can be selected according to different sewing fabrics: such as upper and lower feeding flat sewing machines, upper and lower differential feeding flat sewing machines, lower differential feeding flat sewing machines and needle feeding flat sewing machines; According to the number of sewing threads, you can choose a double-needle sewing machine with two needles sewing at the same time. Different sewing techniques have different types of flat sewing machines. Only by choosing the appropriate flat sewing machine can satisfactory sewing results be achieved.
Chain sewing process
Chain sewing technology is a common sewing technology, and because of the elasticity of chain stitch, it is often the main sewing machine type for sewing knitted fabrics. Because the bottom thread of sewing machine can continuously supply thread like the upper thread, it is often used in sewing woven fabrics. Because the formed single-line chain stitch and double-line chain stitch are easy to disassemble, it is also the main craft sewing machine variety for sewing packaging bags. Therefore, according to the needs of sewing technology, chain sewing is a commonly used variety in many sewing technologies.
Wrap sewing process
Wrap sewing technology is a common sewing technology, a special form of chain stitch, which has the function of trimming the edge of the cut piece after the sewing material is cut. Because the overlock sewing machine has many derivative models, such as single-line overlock sewing, double-line overlock sewing, three-line overlock sewing, four-line overlock sewing and five-line overlock sewing, etc.
Commonly used overlock sewing machines, such as 3-thread overlock sewing, 4-thread overlock sewing, and 5-thread overlock sewing, can not only finish the edge wrapping of cutting pieces, but also finish the sewing function of sewing materials. Because of the elasticity of chain stitch, overlock sewing machine is often the main craft sewing machine for sewing knitted fabrics.
Flat sewing process
Flat sewing technology is a common sewing technology, a special form of chain stitch. Because of the elasticity of chain stitch, it is often the main sewing machine variety for sewing knitted fabrics. With the popularity of casual clothes and tight-fitting clothes, flat sewing technology has been continuously applied in sewing woven fabrics. Flat sewing can not only sew sewing materials, but also have beautiful stitch characteristics, and it is often used to sew decorative patterns of sewing products.
There are many types of flat sewing machines, such as two-needle three-thread flat sewing machine, three-needle four-thread flat sewing machine, four-needle five-thread flat sewing machine, four-needle six-thread flat sewing machine and so on. The sewing factory should choose different flat sewing machine models according to different sewing processes.
The above is the basis for selecting sewing machine varieties by four basic sewing techniques: flat sewing, chain sewing, overlock sewing and flat sewing. In addition to these four basic sewing techniques, there are four common sewing techniques: reinforcement sewing, button sewing, keyhole sewing and embroidery sewing, which are also the important basis for choosing sewing machines.
Reinforcement sewing (binding) process
The stitch used in the reinforcement process is lock stitch. Generally, reinforcement sewing is carried out at the sewing starting point or the sewing finishing point to prevent the seam opening from scattering. For a mechanically controlled reinforcement sewing machine, one machine can only sew one stitch (such as 28 stitches). The original method of selecting sewing machine is based on the number of stitches to be reinforced. With the development of computer-controlled sewing machine, any number of stitches can be reinforced through program editing.
Therefore, reinforcement sewing has become the fastest growing sewing technology in recent years, and it has become one of the main forms of sewing with various patterns. With the increasing size of pattern sewing, a series of pattern machines (template machines) have been formed. Therefore, not only the need of reinforcing sewing needles, but also the size of pattern sewing frame should be taken into account when selecting models and varieties.
Nail sewing technology
There are two kinds of stitches used in the sewing process: lock stitch and chain stitch, so there are two kinds of sewing machines selected: chain stitch sewing machine and lock stitch sewing machine. The stitch formation of button sewing is a special form of reinforcing sewing. According to the sewing requirements of the buttons, reinforce the sewing in the two holes for many times, so as to nail the buttons on the clothes.
Common buttons are flat button, vertical button, marble button, etc. There are also two-hole flat buttons and four-hole flat buttons. When the two-hole flat button is fastened, the sewing machine can finish by reinforcing sewing once. Four-hole flat buckle is finished by secondary reinforcement sewing with sewing machine. Vertical buttons are generally used on the placket and cuffs of thick clothing. When buttoning, the sewing machine performs secondary reinforcement sewing. When choosing sewing machine, the type of sewing machine should be determined according to the form of buttons.
Keyhole sewing technology
There are two kinds of stitches used in keyhole sewing technology: lock stitch and chain stitch. The stitch form is keyhole stitch composed of zigzag stitches in different positions. Therefore, the selected buttonhole sewing machine includes lock stitch buttonhole sewing machine (flat head buttonhole sewing machine) and chain stitch buttonhole sewing machine (round head buttonhole sewing machine).
According to different sewing techniques
Select sewing machine
Common sewing techniques include flat sewing, chain sewing, overlock sewing and flat sewing. Special sewing techniques include reinforcement (knotting) sewing, button sewing, keyhole sewing, embroidery sewing, etc.
Lock stitch buttonhole sewing machine (flat buttonhole sewing machine) is generally selected for sewing thin sewing materials, and chain stitch buttonhole sewing machine (round buttonhole sewing machine) is generally selected for sewing thick sewing materials.
Embroidery sewing technology
There are two kinds of stitches used in the sewing process: lock stitch and chain stitch. The selected sewing machines include various types of embroidery sewing machines and pattern sewing machines. With the continuous development of auxiliary devices, with the auxiliary devices of decorative accessories, various embroidery and sewing requirements can be fulfilled, such as gold embroidery, rope embroidery and ribbon embroidery. When choosing embroidery machine varieties, we should choose different embroidery sewing machine varieties according to the characteristics of embroidery products.
Post time: Aug-15-2022
