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How to solve the problem of powder leakage on the corner for the PE valve bags？
By EwaSeptember 13th, 2024938 views
When traditional PE valve bags are filled with chemical powder, they are prone to leakage at the upper and lower bottoms. This is because the upper and lower bottoms of traditional PE valve bags are glued together. The upper and lower bottoms of the PE valve bag are folded up by several layers of film. During the gluing process, the patch and the outermost film are connected with glue, the powder will leak out through the folds of the other layers of film. Now we have improved the connection method of the upper and lower bottoms, and use heat welding to weld the upper and lower bottom layers into a whole by heating the mold, and no longer use patches.The cost is similar to gluing, and because no glue is used, environmental pollution is avoided.Since many developed countries have banned the use of glue due to environmental problems, our welding packaging is the trend in future packaging.
