How to Seal Mylar Bags for Food Storage?

Wondering why ensuring secure sealing is crucial? Because it has been used to protect food integrity for a long time. Effective sealing prevents external factors from entering into the mylar bags. With these proper sealing, preserve your food from deterioration when in contact with oxygen. 

After filling your mylar bags, sealing is a critical step to make your pouch ready to facilitate your customers. Ensure adequately sealed to avoid food from spilling or prematurely going stale in the pantry. These situations are not ideal for your customers. 

Read this blog, you can learn the various sealing methods and their use to seal your mylar bags for food storage.

3 Different Methods to Seal Mylar Bags

Mylar bags are made from polyester film and contain barrier proteins to preserve food quality for a long time. Effective food storage depends on proper durable packaging. They are considered in the category of flexible packaging and popular due to their characteristics of moisture-resistant, barrier-resistant, and durability. 

Here is our array of methods from which you can pick to seal your mylar bags for food storage: 

1. Heat Seal

One of the simplest and most common methods that can be used to seal the bags. This technique creates a heat impression on the surface to lock the edges of the bags. The purpose of this method is to preserve and prevent contamination.

Requirements: Protective mylar bags, manual sealers (straightener, iron, or Impulse sealers), and automatic sealing machine.

Process: 

• Add labels or stickers if you want to enhance your brand image. 
• Now, fill your mylar bags with the food you want to store and ensure enough space for sealing the edges. 
• Squeeze the bags to remove the extra oxygen from the bag.
• Turn on the heat sealers and place the mylar bags between the sealers' jaws. 
• Apply steady pressure to ensure they stick together. 

Testing: Once you completely achieve the sealing. Wait for one minute to cool down the seal. Now, gently pull the seal to ensure they stick together properly. 

2. Vacuum Seal

Facilitating vacuum sealing helps to remove oxygen by pulling the packaging material into intimate contact. Removing oxygen prevents chemical reactions that cause food to spoil. This technique is an ideal way for oxygen-sensitive items. Removing oxygen from the pouch helps to extend shelf life. 

Requirements: Special Vacuum Sealer, mylar bags

Process: 

• Make your mylar bags ready to seal with labels, stickers, or food filing. 
• Put the bags into vacuum sealing machine bags.
• Once they absorb the oxygen, seal the edges of the mylar bags at the same time. 

Testing:

Once it is done, closely check the seal to avoid any problems of leaks like edges not properly secured or air leaks. The bags should be sealed firmly in place.

3. Zipper Sealing

Using these built-in ziplock mylar bags prevents your food from contamination. Made from polyester film and offers durability with closure property. This easy resealing method gives a moisture or oxygen barrier. Features a re-sealable zipper closure that provides effective storage that prevents food from spoiling. 

Requirements: The Slider Zipper, The Press-To-Close Zipper, the Hook and Loop Zipper, mylar bags

Process: 

• Choose from any zip lock closure and use the heat sealer to fix this zip into mylar bags.
• the zipper is heat-sealed during manufacturing the mylar bags.
• Apply the heat to secure the zipper in place.

Testing:

During the manufacturing of mylar bags, these closures are fixed to the bags and checked carefully. They can be fixed if they are not working properly.

4. Impulse Sealing

One of the specialized heat sealing methods gives instant sealing with short bursts of heat. This technique creates a heat impression by using a short burst of heat. The purpose of this method is to prevent the bags from damage.

Requirements: Protective mylar bags, Impulse Sealer machine

Process:

• Add labels or stickers to your Mylar bags and fill them with the required edibles.
• Remove the extra oxygen from the bag.
• Turn on the heat sealers and place the mylar bags between the sealers' jaws. 
• Apply steady pressure to ensure they stick together. 

Testing: Cool down the bags and gently pull the seal to ensure they stick together properly. 

Which Sealing Method is Best for Your Business?

Myar bags are made from polyester film that provides additional strength to secure your food items from external elements. Add oxygen absorbers to the sealed mylar bags to extend your product's shelf life. If your food owners, use these mylar bags with adequate sealing to preserve the nutritional value of the food. 

Methods like those discussed above help to create a tightly sealed feature to prevent food from stalling during shipping. The preferred method is heat sealers that provide effective sealing. This method ensures food preservation for a long time. You can use a wider sealer because they provide a secure air-tight seal. 

Consider your business requirements before choosing the best sealing method for your food items. You can package your food products in the best possible manner with any of these robust methods. When you are thinking of sealing your food mylar bags, consider these factors first: 

• Type of equipment available
• Desired level of sealing integrity 
• The intended use of the bag

Conclusion

Looking to maintain the properties of mylar bags to preserve your food? Use the proper sealing method and lock freshness or flavor inside the bags. If you are a small business and looking to get effective or flexible packaging with adequate sealing methods, try the cost-effective heat sealers. 

But if you are looking for a specialized form of heat sealing, go for impulse sealing that uses short bursts of heat and reduces longer heat exposure. It is ideal for those products that need minimum heat to prevent the bag contents from being damaged. 

Still, have questions about sealing mylar bags for food safety. Contact us and provide your instructions to our team for customized mylar bags.