PVA-Coated High-Barrier Film
PVA-coated high-barrier film is produced by coating a polyethylene film with PVA (modified with nano-inorganic additives) and subsequently subjecting it to printing and lamination processes. Without significantly increasing costs, its barrier performance is markedly superior to that of five-layer co-extruded EVOH film, while packaging costs are substantially reduced. This not only ensures that the packaged product meets all quality requirements for aseptic packaging but also drastically lowers aseptic packaging costs for food processing enterprises; it is suitable for packaging beverages, fruit juice, milk, soy sauce, vinegar, and more.
Biaxially Oriented Polypropylene Film (BOPP)
Biaxially oriented polypropylene film is produced by co-extruding polypropylene granules into a sheet, which is then stretched in both the longitudinal and transverse directions.
Low-Density Polyethylene Film (LDPE)
Low-density polyethylene film is generally manufactured using either the blown film or cast film process. Cast polyethylene film offers uniform thickness; due to its cost-effectiveness, it is the most widely used type.
Polyester Film (PET)
Polyester film is a material made from polyethylene terephthalate (PET) resin; a thick sheet is first produced via extrusion and then biaxially stretched. It is a colorless, transparent, and glossy film with excellent mechanical properties-featuring high rigidity, hardness, and toughness, as well as resistance to puncture, abrasion, and temperature extremes. It also exhibits good chemical and oil resistance, along with excellent gas barrier and aroma-retention properties, making it a common substrate for barrier composite films.
Nylon Film (PA)
Nylon film is a highly tough, transparent, and glossy material characterized by high tensile strength. It offers good resistance to heat, cold, oils, and organic solvents, as well as excellent abrasion and puncture resistance. While relatively flexible and providing an excellent oxygen barrier, it has poor water vapor barrier properties, is prone to moisture absorption and permeability, and has inferior heat-sealing capabilities. It is suitable for packaging rigid items, such as fatty foods, meat products, fried foods, vacuum-packed goods, and retortable foods.
Cast Polypropylene Film (CPP)
Cast polypropylene film is produced using the cast film process and is available in two main types: general-purpose CPP and retort-grade CPP. It features excellent transparency, uniform thickness, and consistent properties in both the machine and transverse directions; it is typically used as the inner layer material for composite films.
Aluminized Film
The most widely used aluminized films are aluminized polyester (VMPET) and aluminized CPP (VMCPP). These films combine the characteristics of plastic films with those of metals.