Yes, LDPE shrink film when heated. LDPE is a thermoplastic polymer known for its flexibility, transparency, and chemical resistance. When subjected to heat above its softening temperature, typically around 100°C to 130°C (212°F to 266°F), LDPE undergoes a phase change from a solid to a viscous liquid state. During this process, the polymer chains become more mobile, allowing the material to flow and reshape.

As LDPE shrink film manufacturers cools down after heating, it returns to a solid state and retains its new shape. This property makes LDPE an ideal material for shrink packaging applications. In shrink packaging, LDPE film is heated to its softening point, typically using heat guns or shrink tunnels, and then placed over a product or container. As the film cools, it shrinks tightly around the object, conforming to its shape and providing protection and tamper resistance.

LDPE shrink film price ability to shrink when heated makes it suitable for various packaging applications, including shrink wrapping of consumer goods, food packaging, and industrial products. However, it's essential to carefully control the heating process to avoid overheating and damage to the material or packaged items.