Vacuum freezer bags are specialized sealed bags designed for freezing food. By removing air and creating a vacuum inside, they prevent oxidation, moisture loss, and freezer burn, significantly extending the shelf life and preserving the texture of food.
Ø A vacuum freezer bag is essentially aplastic storage bag that has been designed for use with a vacuum sealer and for subsequent freezer storage.
Here is a breakdown of what makes them distinct and useful:
Ø Key Features and Function
· Vacuum Sealing Compatibility:These bags are specifically designed to work with external vacuum sealing machines. That allows air to be completely removed from the bag before it is sealed shut.
· Airtight and Moisture-Proof Seal:Once the air is extracted and the bag is heat-sealed, it creates anairtight and moisture-proof environment. This is the primary mechanism for food preservation.
· Material:They are generally made from a multi-layer, durable plastic, polyethylene (PE) and nylon (PA) blend. The nylon layer provides the necessarybarrier propertiesagainst oxygen and moisture vapor.
· Freezer-Safe:The material is designed to withstand the very cold temperatures of a freezer without becoming brittle, cracking, or losing its barrier integrity.
Ø Benefits of Using Vacuum Freezer Bags
Benefit | Explanation |
Prevents Freezer Burn | By removing the air and creating a tight seal, vacuum bags eliminate the space for ice crystals to form on the food's surface, which is the main cause of freezer burn. |
Extends Shelf Life | Removing oxygen significantly slows down the degradation process (oxidation) of food, allowing frozen food to last much longer while maintaining quality. |
Saves Space | Once the air is removed, the bag shrinks tightly around the food, making the item flatter and more compact, which saves significant space in the freezer. |
Maintains Freshness & Flavor | The airtight seal locks in the food's natural moisture, flavors, and nutrients. |
Ø Common Uses
· Meat and Poultry:Ideal for long-term storage of steaks, ground meat, chicken breasts, etc.
· Prepared Meals:Freezing portions of soups, stews, casseroles, or marinades.
· Vegetables and Fruits:Storing blanched vegetables or freshly picked berries.
· Bulk/Deli Items:Keeping cheese, cold cuts, or coffee beans fresh for extended periods.
Color | According to customer requirements, 10 colors can be printed |
Bag type | Vacuum freezer bag |
Scope of use | Packaging for frozen foods, snacks, beverage powders, rice, nuts, hot foods, dry goods, dried fruits, coffee, tea, sugar, bread, grains, flour, candies, sweets, soap, etc |
Advantages | Moisture proof/Oxygen proof/Light blocking/Stable/Zipper sealing |
Material selection | Food grade laminated materials - PA, PET, BOPP, MATE OPP, VMPET, AL, KRAFT PAPER, PE, CPP, RCPP |
Thickness selection | Customize according to customer needs |
Bag Type Selection | Square Bottom, Vertical, Medium Sealed, K-Bottom Sealed, Flat Bag, etc |
