Seal is term used to describe bottom of a poly bag. The three types of seals are flat, gusseted and star.
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- Star seal is a multilayered seal is full gusseted and then folded prior to sealing, allowing for the weight to be evenly distributed.
- Gusset seals is a flat-style bag manufactured with both sides tucked in to form gussets.
- Flat seal is a straight seal along bottom of a poly bahg (looks like a pillow case).