Double-needle machine, Chainstitch Machine and Bartack Machine Stitch Intervals
Dec 14, 2023
Double-needle machine
As the name implies, a double-needle machine has two needles. The stitching of a double-needle machine consists of two parallel, side-by-side rows of lockstitching made by two independent needles.
Double-needle machines can be divided into two types based on needle bars - double bars and single bars. Single-bar double-needle machines can only sew straight lines, while double-bar machines can handle a wider range of techniques. In addition to various straight and curved seams, they can also do cornering.
The most common needle intervals for double-needle machines are between 0.3cm-1.25cm, specifically 1/8 (0.3cm), 3/16 (0.5cm), 1/4 (0.6cm), 5/16 (0.8cm), 3/8 (1cm), and 1/2 (1.25cm). They are usually used for pocket openings and decorative topstitching.
Chainstitch machines can be single-needle, double-needle, or multi-needle. Common intervals are 1/8 (0.3cm), 1/4 (0.6cm), and 5/16 (0.8cm).
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