Cutting knitwear sewing equipment

Cutting knitted garments requires a longer sewing time, and the use of a variety of equipment, the following is an introduction to several commonly used equipment.

1. Overlock machine

An Overlock sewing machine is commonly known as a "cuffing car" and "lockstitch machine" in factories, which can form 500 series of overlock stitches. The overlock machine is equipped with a cutter, which can cut the edge of the fabric and sew the seam, and the seam can cover the edge of the fabric and prevent the edge from rolling up and falling apart.

Overlock seams are chainstitch seams with good elasticity and strength, which match the characteristics of knitted fabrics, and are therefore the most widely used in knitwear factories. Overlock sewing machines are characterized by high productivity and speed, with a maximum speed of 10,000 stitches/min or more, and are mainly used for sewing together, sewing sleeves, and sewing collars.

Overlock machines are often categorized according to the number of threads that make up the stitch, which can be divided into single-thread overlock, double-thread overlock, three-thread overlock, four-thread overlock, and five-thread overlock.

Single-thread overlock, double-thread overlock, and three-thread overlock have only one straight needle, while four-thread overlock and five-thread overlock have two straight needles.

At present, three-thread overlock, four-thread overlock, and five-thread overlock are widely used in knitted garments. In recent years, as people's demand for sewing quality continues to improve, especially in the sewing of some high-grade products, the use of four-thread overlock sewing machines is more and more.

Five-thread overlock is a composite stitch made of a two-thread chain stitch and a three-thread overlock stitch. The most important feature of the stitch is that it is strong, and at the same time, a machine can complete the work of two kinds of equipment, namely, flatlock and overlock, which simplifies the process and shortens the working hours, and is widely used in the sewing process of knitted garments.

In addition to the ordinary density and width of overlock stitch, recently in knitted casual wear and summer clothing in the dense copying machine is also widely used in clothing edge sewing, the use of dense copying machine overlocking sewing edge without the need to do the folding treatment, so that the edges of the garment looks more casual, the edge of the sewing is thinner, the elasticity of the fabrics also shows a small wave similar to the ruffles of the effect.

2. Interlock sewing machine

Interlock sewing machine in the garment factory is commonly known as "hem (kan) car", the sewing out of the stitch is 400 or 600 types of cover type stitch.

The covering stitch covers the edge of the sewing material, which not only prevents disintegration but also plays a decorative and reinforcing role, while the stitch also has good tensile properties.

Interlock sewing machine is the most versatile type of knitting sewing machine, mainly used for splicing, collar rolling, piping, folding, reinforcing, trimming, and other processes. It is widely used in knitted garment processing.

The selection of an interlock sewing machine should be in accordance with the stitch width, stitch type, and sewing position to choose.

Interlock sewing machines according to the number of needles can be divided into double-needle machines, three-needle machines, four-needle interlock sewing machines, etc., and according to the surface of the surface with or without decorative stitch divided into non-decorative thread interlock sewing machines (single-sided interlock sewing machine) and decorative thread interlock sewing machine (double-sided interlock sewing machine), the following figure shows the stitch is a single-sided stitch.

According to the shape of the machine is divided into flat-type interlock sewing machine and cylinder-type interlock sewing machine, flat type interlock sewing machine is mainly used for piecing and folding the edge of the longer seams, cylinder the type interlock sewing machine is used for collar or cuffs and so on the closed type short distance seams, as shown in the figure below.
3. Chain machine

Chain machine is also used in the production process of knitted garments, mainly in the sewing of elastic bands, sole waist, sewing surface threads, seams, sewing decorative strips, and other processes.

Chain stitch has high elasticity and adapts to the extension properties of knitted fabrics. Chainstitch machines are divided into single-needle, double-needle, triple-needle, or multi-needle according to the number of needles, according the use of the need to choose.

4. Other sewing equipment

In addition to the sewing machine in the knitted garment sewing also has a small amount of use, such as sewing trademarks, patch pockets, or sewing low elastic fabrics, such as the seam parts. In the high elastic knitted garments the use of less.

There are also some special sewing equipment also need to be used in conjunction, such as overlock machine, lockstitch machine, Button Sewing Machine, prying edge machine, etc., because these machines sew parts of the smaller, without special consideration of the characteristics of the knitted fabric, so you can choose a general-purpose equipment.

Processing and production of knitted garments in addition to the selection of sewing equipment and woven fabrics are different, cutting and finishing also need to be based on the specificity of knitted fabrics to choose the right equipment. In addition to cutting before the need for knitted fabrics for loosening treatment to achieve stability of the fabric size.

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