With traditional valve bags, the bag must be cut open to discharge the material. Material is prone to remaining in the bag corners, resulting in loss. Blade use not only poses a hand-cut hazard, but debris from damaged tools can also mix into the material, creating a risk of foreign matter contamination.

Anhui Tianda Environmental New Materials Co., Ltd.’s easy-open square-bottom valve bag eliminates the need to cut the bag body. Simply pull the bottom panel lightly to discharge the material. The material pours out cleanly, significantly reducing raw material waste. At the same time, the optimized structure solves the pain point of traditional square-bottom bags bonded with B+K Stratapac adhesive, whose adhesive layer becomes brittle in severely cold environments, making the bag suitable for extremely cold working conditions.

This structural solution can also be applied to square-bottom open-mouth bags.