The utility model relates to a packaging
composite material technical field especially relates to a kind of apple vinegar strip-shaped packaging
composite material, comprising: using four-layer
composite structure: printing layer, material is biaxially oriented
polyester, thickness is 12.0-20.0 μm;
Barrier layer, material is
aluminum foil, thickness is 7.0-12.0 μm;Reinforcing layer, material is biaxially oriented
polyester, thickness is 12.0-20.0 μm;Heat-sealing layer, material is cast
polypropylene, thickness is 60.0 μm, and each layer is adhered by
polyurethane adhesive adhesive. Printing layer and
barrier layer between being equipped with ink layer, for printing text or pattern, printing layer surface treatment process ensures the definition and durability of printed pattern, improves product appearance quality. Printing layer outer surface is coated with flatting oil to improve appearance texture. The utility model not only guarantees the
mechanical strength of packaging, but also realizes good heat-sealing performance, applicable to high-speed automatic packaging
production line. The selection and thickness ratio of each layer material are optimized, which ensures functionality while considering
cost benefit.