A low cost solution for sealing poly bags to keep products fresh and prevent loss. A great solution for closing poly bags containing newspapers to prevent them from getting wet or damaged.
Run a produce stand? Pre-pack and seal fruits and veggies. Human powered, and can be easily attached to carts and tables. Seals up to 1 cm or about 1/2" diameter.
In this .gif, take note of the regular vs. trimmed bag.