PE Film: Transparent Like Plastic Wrap
Polyethylene (PE) film is the most common transparent film in daily life, with distinctive features:
High Transparency: When uncolored, it has a light-transmitting effect similar to cellophane, commonly used to wrap shelves in supermarket fresh produce sections.
Soft and Wrinkle-Prone: It makes a rustling sound when crumpled and retains slight creases after unfolding.
Smooth Surface: It feels waxy to the touch, and water droplets form round beads on its surface.
PVC Film: Raincoat-like Texture
Polyvinyl chloride (PVC) film has unique visual characteristics:
High Gloss: The surface exhibits a ceramic-like glaze reflective effect.
High Color Saturation: Commonly found in vibrant shades such as blue and red, this material is frequently used for outdoor advertising banners.
Perceived Thickness: It feels heavier than PE film for the same area, and leaves noticeable creases after folding.
EVA Film: Yoga Mat-like Softness
Ethylene-vinyl acetate (EVA) film is the most easily recognizable:
Matte Finish: The surface has a light-scattering effect like frosted glass.
Elastic memory: Slowly rebounds after stretching, commonly used in protective covers for sports equipment.
Uniform thickness: The cross-section shows a uniform bubble structure, providing a sponge-like cushioning feel when squeezed.
