Patent attributes
A double-layered watertight zipper improves the watertight effect of the conventional zipper. The watertight zipper includes first and second stringer tapes. Each stringer tape includes a tape, a first leakproof layer, a plurality of scoops and a second leakproof layer. The first leakproof layer and the tape construct a waterproof tape. The first leakproof layer includes an inner face forming a first abutting face. The scoops are arranged on the waterproof tape. The second leakproof layer is arranged on the scoops and connected to the first leakproof layer. The second leakproof layer includes an inner face forming a second abutting face. When the scoops of the first and second stringer tapes are engaged with each other, the first abutting faces of the first and second stringer tapes abut with each other, and the second abutting faces of the first and second stringer tapes abut with each other.
