Ladies BlousesLet’s assume that we are making ladies' blouses with a total thread consumption of 122 yards of thread per blouse.
We now need to know a few additional things. We need an operations bulletin with the stitch types for every seam, and we also need to know the seam type as a Superimposed Seam will consume less thread than a Lapped Seam (there are 6 basic seam types: SS, LS, BS, FS, EF, OS). These stand for Superimposed Seams, Lapped Seams, Bound Seams, Edge Finished Seams, and Ornamental Stitching.
Let’s look for an operations bulletin. The operations bulletin (see Operations Bulletin by Pegasus below) is really a guide to assembly according to specifications.
In the chart below the eleven (11) triangles at the top of the 'Process Chart of Ladies' Blouse A (Long sleeve type)' signify the start of a sub-assembly or the start of a raw material. Three (3) additional triangles can be found later in the process that also signify the start of a needed component or label. Building a product in this way helps manufacturers lay out assembly lines and locate inspectors during assembly.