The Strength Behind Reinforced Kraft Tape

If you look closely at the tape in the image, you will notice a distinct diamond-shaped grid pattern running through the kraft paper. This is not a design choice for aesthetics; it is the structural backbone of Reinforced Water Activated Tape (WAT). In our product catalog, this category, represented by models like the JLN-3150, is engineered for scenarios where a simple paper seal is not enough. The visible grid is composed of fiberglass strands sandwiched between two layers of high-strength kraft paper. While standard paper tape relies solely on the fiber strength of the paper itself, the inclusion of this fiberglass network acts similarly to rebar in concrete, drastically increasing the tape's tensile strength and preventing it from snapping under the pressure of a heavy or overstuffed carton.

The second critical component of this tape, though invisible in the image until applied, is the adhesive system. Unlike pressure-sensitive plastic tapes that rely on synthetic chemical tack to sit on top of a box's surface, this tape utilizes a starch-based adhesive. As seen in the application photo, once the tape is wetted and applied, it does not just stick; it creates a permanent bond. The dissolved starch penetrates deep into the corrugated fibers of the carton, effectively "welding" the tape to the box. This creates a tamper-evident seal, meaning that if someone attempts to peel the tape off to pilfer the contents, the box surface will tear, leaving visible evidence of tampering. For industries shipping electronics, automotive parts, or heavy industrial goods, this combination of fiberglass reinforcement for strength and starch adhesive for security makes it the superior choice over standard plastic packing tape.