To create an airtight seal on vacuum-sealing mylar bags, you can follow these steps!
Squeeze out any excess air from the bag
This will help minimize oxygen exposure. Instead, it will maximize the effectiveness of the oxygen absorber.
Place the open end of the bag between the heat sealer's jaws
This way, you will leave a small portion unsealed to allow the release of trapped air.
Activate the heat sealer
Now activate the heat sealer and slowly move it along the opening of the bag. By doing this, you create a firm and secure seal. Also make sure to apply consistent pressure and maintain a steady pace.
Ensure that the seal is completely closed
Make sure there will be no gaps or openings. A properly sealed bag will be airtight. This way, it will work well in preventing oxygen and moisture from entering.