String Zipper

We have String Zipper , “LL-3SD” and “PP-3SD”.

When producing pouches with a string zipper, the sealing process involves sandwiching <film><zipper><film> between the left and right sealing bars. Unlike sealing methods that apply pressure from top to bottom, thickness stability is especially critical in this process to achieve beautiful, high-quality pouch production.

Our 3mm String Zipper “LL-3SD” and “PP-3SD” are designed specifically for bag manufacturers who demand both performance and reliability.
With excellent thickness stability, our zipper ensures consistent quality during production, reducing defects and improving overall efficiency. At the same time, its smart holding force structure keeps contents securely inside while allowing easy opening with minimal force.
This balance of strong holding force inside and user-friendly opening-side makes our String Zipper an ideal choice for a wide range of packaging applications, such as food packaging, daily use items packaging.

Feastures of “LL-3SD” and “PP-3SD”
◆ Thickness stability
◆ User-friendly designe on holding force