Understanding Different Can Liner Seal Types

Star Seal – This is the strongest, most reliable seal available. This is accomplished by gusseting the bag to the center and folding it once. The seal is then applied to the eight layers of film at the bottom creating a star shaped bottom. An added benefit is the creation of “pockets” for liquids to pool below the seal which reduces the chance for leaks. Dimensions are stated in two dimensions: (40x48)

Gusseted Seal – A flat style bag that has both sides tucked in to form gussets and the bottom is sealed. The dimensions of this bag are stated in three dimensions (ex. 23x17x46). Least reliable seal due to varied-layer sealing.

Flat Seal – A polyethylene tube that has been flattened and sealed across the bottom 2 layers. This provides a good seal but the bag does not conform to the container shape, creating “dog ears” that stick to the receptacle. Dimensions are stated in two dimensions: (40x46)