KDD-305Express Bag Hot Melt Glue Block

Express bag hot melt glue block is specifically developed for sealing and bonding express delivery bags, courier bags, and mailing envelopes. It offers excellent adhesion to polyethylene (PE), polypropylene (PP), and other plastic films, ensuring strong and tamper-proof sealing performance.

This adhesive provides fast melting, stable viscosity, quick setting, and high peel strength. It features good heat resistance, cold resistance, and aging resistance, ensuring packaging reliability during transportation and storage. The product is solvent-free, low odor, and environmentally friendly, fully compliant with RoHS and REACH standards.

ItemSpecification / Description
MaterialEVA / Polyolefin thermoplastic polymer
AppearanceWhite or light yellow solid blocks
Softening Point85℃ ~ 120℃
Recommended Use Temperature160℃ ~ 190℃
Viscosity (at 170℃)2,500 ~ 6,000 cps
Open Time6 ~ 15 seconds
Setting Time3 ~ 8 seconds
Temperature Resistance-20℃ ~ +90℃
Environmental ComplianceRoHS / REACH

Applications

  • Express and courier bag sealing

  • Mailing envelope bonding

  • Plastic film lamination and sealing

  • PE/PP packaging materials bonding

  • General e-commerce logistics packaging

Instructions for Use

  1. Preparation

    • Ensure the sealing surfaces are clean, dry, and free of oil or dust.

    • Adjust glue equipment according to bag thickness and film material.

  2. Melting

    • Place glue blocks into the tank and heat to the recommended operating temperature.

    • Maintain stable temperature to ensure proper viscosity.

  3. Application

    • Apply molten adhesive evenly on sealing areas of the bag.

    • Press or laminate the film surfaces together immediately.

  4. Curing

    • Hold the sealed area in place until the adhesive cools and sets.

    • Avoid applying stress before full curing is achieved.

  5. Notes

    • Avoid overheating to prevent adhesive degradation.

    • Keep equipment clean and remove carbonized residue regularly.

    • Store in a cool, dry, and ventilated environment away from sunlight and moisture.


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