Stitch Density and SPI: Reading Sewing Specs on Bag Tech Packs
Stitches per inch, or SPI, is the number that quietly decides whether a bag survives its load rating. Read a bag tech pack without understanding stitch density and you cannot tell a durable seam from a decorative one, because two bags with identical fabric can differ...
Fabric Coatings for PP Bags: Lamination, PU, and PVC Options Compared
A bare woven polypropylene bag is a compromise: strong, cheap and water-resistant, but porous, printable only with limitations, and transparent to UV degradation — the starting point for most of the woven constructions in our bag product range. Fabric coatings are how...
Gusset vs Flat Bottom Totes: Structure, Capacity, and Stacking Differences
Gusset vs Flat Bottom Totes: Structure, Capacity, and Stacking Differences Two totes can share the same fabric, the same print and the same handle and still behave completely differently on a shelf and in a shipping carton. The difference is the bottom. A gusseted...
Handle Webbing 101: Width, Breaking Strength, and Attachment Stitches
Handle Webbing 101: Width, Breaking Strength, and Attachment Stitches The handle is the part of a bag that takes the load, and the webbing is the material the handle is made from. A handle that feels strong can still fail if the webbing is the wrong width, the wrong...