Jeans and T-shirtsTo produce a pair of a pair of traditional jeans, following techniques are required. The sewing process alone takes between 12 and 15 different types of sewing machines, special equipment for attaching the trims will also be necessary. To save time and materials it’s best to have the machinery for the different operations already set up.
Some machines may require up to 4 or 5 thread spools to create one stitch. Setup and advance planning can get pretty complex especially if the designer wants to have several contrasting color threads for the stitching throughout the blue jean garment. Each operation would be set up separately because there are different color threads required for different parts of a blue jean garment. There are also a variety of stitches required for different parts of the garment for functional reasons.
For example the hem might use a chain stitch and a seat seam may need a felled stitch for reinforcement since that part of the denim jean garment has greater stress from the wearer. One area may need a single needle stitch where another area might use a double needle stitch. I have learned from the mass production processes that it becomes more cost efficient when an assembly line scenario is utilized and the best way to keep costs low for the consumer is to make mass quantities.
The stitch complexity used in creating a pair of jeans is far greater than that of sewing together a custom suit! As mentioned above a designer may choose to use a variety of thread colors throughout the denim jean so the more complex the thread color combinations the more expensive the construction will be. A greater inventory of threads needs to be kept and a higher skill level employee would be required to sort out the thread layout.
Cost considerations include stitches per inch. The higher the stitch count, the more expensive it will be to construct a garment since there is greater thread consumption. It may also be interesting to note that not only is it important to be watchful of the stitch count on one machine type but to have all machines used in constructing that garment to have a similar stitch length so their is a consistency throughout the garment.