Depending on the intended use and environmental requirements of the packaged product, designers of roll films must select suitable materials, such as polyethylene (PE), polypropylene (PP), and polyester (PET), while determining the appropriate thickness to ensure sufficient flexibility, tensile strength, and barrier properties. Films that are too thin are prone to breakage, while those that are too thick increase costs and processing difficulties; therefore, designing the thickness appropriately is crucial.
Roll film design emphasizes functionality and processing adaptability. The design must consider the film's adaptability during production and use, such as the needs of heat shrinking, composite packaging, or automated sealing. Functional design includes high-temperature resistance, low-temperature resistance, moisture resistance, antistatic properties, abrasion resistance, and oxygen and moisture barrier properties to ensure the film maintains packaging effectiveness and product quality under different environments. Furthermore, the film must also carry branding, logos, and promotional information. Designers will plan the film's appearance based on printing processes, transparency, color schemes, and pattern layouts to ensure it is both aesthetically pleasing and functional.
