Courier Bag Self-Sealing Attachment Using Hot Melt Dispensers

Trasy Enterprises offers a reliable and efficient solution for creating self-sealing courier bags using our precision-engineered Hot Melt Adhesive Dispensers. These systems are designed to provide strong, tamper-proof seals suitable for e-commerce packaging, logistics, banking, medical supplies, and document protection.

The process begins by feeding the courier bag film—LDPE, Co-extruded PE, or Biodegradable film—into the sealing station. Our hot melt dispenser heats and maintains the adhesive at the ideal temperature, ensuring uniform viscosity and smooth flow. A controlled nozzle applies a precise, consistent strip of pressure-sensitive adhesive (PSA) onto the release liner strip.

Once the adhesive is laid, the siliconized release liner is applied over the sealing leap of the bag to form the self-seal bag. This liner prevents premature sticking and allows the end user to peel and seal the bag instantly. Trasy’s machines ensure accurate alignment of both adhesive and liner, even at high speeds, giving the bag a clean professional finish.

Using hot melt PSA provides several advantages: instant bonding, no curing time, excellent tack, long shelf life, and strong tamper-evident closure. Trasy Enterprises’ dispensers are built with user-friendly controls, adjustable coating width, temperature stability, and minimal maintenance needs—making them ideal for small, medium, and large courier bag manufacturers.

With Trasy Enterprises’ hot melt dispenser technology, manufacturers can enhance quality, increase productivity, and deliver premium, secure self-sealing courier bags to the market.