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How Is The Mailing Packaging Bag Sealed Or Sealed?

Sealing and closing mailing packaging bags, including poly mailers, is a crucial step in ensuring that your items are securely packaged and protected during shipping. Proper sealing helps prevent damage, tampering, and loss.

1. Self-Sealing Adhesive Strip:

Many mailing packaging bags, including poly mailers, come equipped with a self-sealing adhesive strip. This strip is typically located on the flap or lip of the bag. To use this method:

a. Insert your items into the bag, making sure they are properly arranged.

b. Fold the flap or lip of the bag over the opening, ensuring that it covers the bag's entrance completely.

c. Firmly press down on the adhesive strip. The pressure activates the adhesive, sealing the bag shut.

d. Run your fingers along the sealed edge to ensure a secure bond.

e. For added security, some bags have a second adhesive strip on the outside flap, which can be folded over the first strip to provide a double seal.

2. Permanent Seal:

Certain mailing packaging bags feature a permanent adhesive strip. Once sealed, these bags cannot be reopened without visibly damaging the bag. This method provides an extra level of security:

a. Follow the same steps as outlined for the self-sealing adhesive strip method to insert and arrange your items.

b. Fold the flap or lip of the bag over the opening.

c. Press down firmly to activate the permanent adhesive. Ensure it adheres securely.

d. Check to confirm that the bag cannot be easily opened without evidence of tampering.

3. Resealable Seal:

Resealable mailing packaging bags have a peel-and-seal adhesive strip that allows recipients to open and reseal the bag without causing damage. This feature is useful for returns, inspections, or when customers need to access the contents:

a. Insert your items into the bag and arrange them.

b. Fold the flap or lip of the bag over the opening, ensuring proper coverage.

c. Press down on the adhesive strip to seal the bag initially.

d. Recipients can then peel open the bag's flap, access the contents, and reseal it by pressing the adhesive strip back into place.

e. Make sure the bag is securely resealed if necessary.

4. Heat Sealing:

For a more permanent seal, heat sealing can be used with certain types of mailing packaging bags, particularly those made of materials like polyethylene or polypropylene. This method is commonly employed in industrial settings:

a. Place your items inside the bag.

b. Position the open end of the bag between the jaws of a heat sealer machine.

c. Activate the heat sealer, which generates heat to melt and fuse the bag's edges together.

d. Carefully remove the sealed bag from the machine once the seal is complete.

e. Ensure a secure, airtight seal to prevent tampering or damage during shipping.

5. Zipper Closure:

Some mailing packaging bags, such as ziplock bags, feature a zipper-style closure. While these are commonly used for smaller items, they can also be effective for larger ones:

a. Insert your items into the bag.

b. Ensure the zipper tracks are aligned on both sides of the bag's opening.

c. Use your fingers to slide the zipper shut along the tracks until it reaches the end of the bag.

d. Double-check that the zipper is securely closed, providing a tight seal.

6. Twist-Tie Closure:

For mailing packaging bags with twist-tie closures, such as cellophane bags or produce bags, you can use twist ties or wire closures:

a. Gather the open end of the bag around your items.

b. Insert a twist tie or wire closure and twist it to secure the bag closed.

c. Make sure the twist-tie is tight enough to prevent the bag from opening.

Each of these sealing methods has its advantages, and the choice depends on your specific packaging needs, the type of bag you are using, and the level of security required for your items. It's important to select the most suitable sealing method to ensure that your packages are well-protected and securely sealed during shipping and handling.