DNLS or Double Needle Lock Stitch Machine

Lock Stitch Machine is the most common and high demanding machine for men & women’s clothing varieties. Lock Stitch Machine uses two threads, an upper thread which comes from the sewing needle and the lower thread which is coming out from the bobbin. The two threads upper & lower threads lock together in the hole in the fabric which they pass through. 

To make a stitch, the machine lowers the threaded needle through the cloth into the bobbin area, where a rotating hook catches the upper thread at the point just after it goes through the needle. The hook mechanism carries the upper thread entirely around the bobbin case, so that it has made one wrap of the bobbin thread. The take-up arm, then pulls the excess upper thread (from the bobbin area) back to the top, forming the lock stitch. Then feed the dogs pull the material along one stitch length, and the cycle repeats.

There are two types of lock stitch machine according to the number of sewing needles and bobbins, they are:

1. SNLS or Single Needle Lock Stitch Machine.

2. DNLS or Double Needle Lock Stitch Machine.

A double Needle Lock Stitch Machine works on the same theory as the SNLS machine while using two needles and two bobbins thus resulting in two parallel rows of lock stitch.

When the stitch forms, correctly equal amounts of bobbin and needle thread are used. Upper and lower threads interlock in the center of the fabric.

The double needle lock stitch is the tightest and most secure stitch.

Box Pockets on safari jackets, light jeans and pyjamas, top stitch front collar edges of safari jackets, sew pockets on coats, sew skirt box pleats, top stitch the collars of ladies wear, top stitch the cuffs of ladies wear, suitable for sewing shirts, uniforms, jeans and women underwear, inseam of the trouser,  etc. are sewed by double needle lock stitch machine.

Advantages:

1. Lock Stitch Machines are versatile and can be used for a variety of operations.

2. Compare to all other stitch types, this class uses the least amount of thread and produces the flattest stitch.

3. It is reversible.

4. The double needle lock stitch is the tightest and most secure stitch.

5. It is the only stitch formation that can be back stitched if the ends need to be secured.

6. It is non-revealing.

7. Good hands.

8. Lies flat on the fabrics.

 Md. Farid Ahmed
IE Officer
Fakir Apparels Ltd.
BSCIC Industrial Area, Enayet Nagar,
Fatulla, Narayangonj, Bangladesh.
Mobile: 8801814220987
E-mail: farid.ieconcern@gmail.com