LDPE (low density polyethylene) sheet is a soft, flexible plastic panel valued for its pliability, excellent chemical resistance, and ability to absorb impact without cracking. Where HDPE is rigid and structural, LDPE is deliberately soft — it bends, conforms, cuts easily, and cushions rather than resisting, which makes it the right material for gaskets, liners, and protective surfaces that need to flex and seal. It resists a wide range of acids, bases, alcohols, and solvents, absorbs virtually no moisture, and maintains flexibility at low temperatures where stiffer plastics become brittle. Standard grades are FDA compliant for food contact.
LDPE sheet is commonly used for gaskets and seals, tank and container liners, cutting and work surfaces, protective padding and surface protection, chute and hopper linings, marine and dock bumper applications, cryogenic and cold-service components, and prototype and pattern work where an easily worked material speeds development. It cuts cleanly with a knife or shears in thin gauges and machines readily in heavier ones, and it heat-welds and thermoforms at lower temperatures than HDPE. Like all polyolefins, it cannot be solvent-cemented and resists most adhesives and paints without surface treatment, so parts are joined mechanically or by heat welding. LDPE has a lower service
| Material | LDPE |
|---|---|
| Shape | Sheet |
| Manufacturing Method | Extruded |
| Unit of Measure | Sheet |
| Finish | Smooth |