Stepping into the sewing equipment market, novice buyers are often confused by the wide variety of machines: why can one machine only sew straight lines while another has several needles? Why are completely different machines used for the hems of T-shirts and the plackets of shirts? In fact, all of this is determined by the stitch type. Different stitch types correspond to different application scenarios. Today, we will thoroughly explain several of the most common types of industrial sewing machines, so that you can have a clear mind when choosing equipment and avoid wasting money.
Type 1: Lockstitch Sewing Machine – The "Universal Cornerstone" of Garment Production
This is the most common and widely used type of machine.
Stitch Principle: The top thread and bobbin thread interweave like a knot in the middle of the sewn material, forming identical short dashed lines on both the front and back sides.
Advantages: Simple structure, firm stitches that are not easy to fray.
Representative Models: Our high-speed lockstitch industrial sewing machine
Applicable Scenarios: Almost all garment piecing seams, such as the side seams of shirts, the legs of jeans, and the outer seams of suits. It can handle various fabrics from sheer gauze to thick leather, making it a "jack of all trades" in factories. If you produce regular ready-to-wear clothing, the lockstitch machine is an absolute workhorse.
Type 2: Overlock Machine – The "Guardian" Against Frayed Edges
Stitch Principle: It wraps the frayed edges of the fabric with multiple threads (usually 3 to 5) while sewing them together. The stitches are elastic, and the edges look as if they are "locked" with a loop.
Advantages: Prevents fabric fraying; elastic stitches suitable for knitted fabrics.
Representative Model: 4 Thread Industrial Overlocker
Applicable Scenarios: It is almost the "first process" for all cut garment pieces. Especially for knitted garments such as T-shirts, sportswear and underwear, an overlock machine must be used to finish the edges to prevent curling and fraying. If your main business is knitted products, the overlock machine is your core equipment.
Type 3: Coverstitch Machine – A Master of Handling "Elasticity" and "Decoration"
Stitch Principle: The top thread forms parallel straight or decorative lines on the surface, while the bobbin thread creates a chain stitch like a mesh.
Advantages: Smooth stitches with great elasticity that do not restrict the stretching of the fabric, and an attractive surface finish.
Applicable Scenarios:
Hems and cuffs: The hems and cuffs of T-shirts and hoodies need to be sewn with a coverstitch machine for easy putting on and taking off while maintaining a smooth finish.
Representative Model：2 Needle 3 Thread coverstitch Sewing Machine
Piping and decoration: Sewing reflective strips or decorative bands on sportswear.
Underwear shoulder straps: Require elastic and aesthetically pleasing stitching.
Summary
Before purchasing equipment, ask yourself three questions:
What are my main products? (This determines your main machine type: choose a lockstitch machine for regular ready-to-wear, an overlock machine is a must for knitted products, and a coverstitch machine may also be needed for underwear/sportswear.)
What fabrics do I need to process? (This determines whether you choose a heavy-duty machine or a standard model.)
Do I pursue ultimate speed or ultimate quality? (This determines whether you choose a regular model or a direct-drive computerized model with an automatic control system.)
Clarify your needs and then look for the right equipment accordingly, and you will find that it is actually not difficult to find the perfect "money-making tool" for yourself.