NOVEL PROCESS FOR LONGITUDINAL SEALING OF BEVERAGE PACKAGE BOX PACKAGING MATERIAL

摘要

A novel process for longitudinal sealing of beverage package box packaging material. It cuts the paper with a gap of 6-16 mm wide before the paper is coated, compounding the paper with plastic film and aluminum foil, cutting the central line open with both sides left with 3-8mm plastic edges, with one edge super positioned on the other, heat welding to the seal packing box, the said paper having a cutting width of 10-12 mm. It changes previous multi layer compound process, with first open then close, ensuring the vertical seal of the packing material, saving the expensive sealing strip and structures to stick the strips.