Signature Plastics

LDPE (Low Density Polyethylene)

Signature Plastics extrudes custom LDPE profiles for applications where softness, flexibility, and impact absorption are required without the elastic recovery of rubber-based materials. LDPE is commonly selected when a profile needs to bend easily, absorb contact, or conform during installation.

LDPE extrusions are used across packaging, material handling, and protective applications where gentle contact and flexibility are more important than stiffness or sealing force.

What is LDPE?

Low density polyethylene is a thermoplastic material characterized by its soft, flexible nature and low stiffness. In extrusion, LDPE is used for profiles that need to flex freely, compress under light force, or provide a protective interface between harder surfaces. LDPE does not behave like an elastomer and is not intended for tight sealing or load-bearing use. It is chosen when a soft, forgiving profile is required.

Typical LDPE Applications

LDPE is commonly specified for extruded profiles that provide protection or flexibility. Applications include:

  • Protective edging and guards
  • Soft bumpers and spacers
  • Flexible tubing and sleeves
  • Packaging and shipping profiles
  • Protective covers and wraps
  • Material handling profiles
  • Light-duty trim profiles
  • Many LDPE profiles are cut, slit, or assembled after extrusion to meet installation or handling requirements.

Advantages of Extruded LDPE

  • Very flexible and easy to bend
  • Soft surface for contact protection
  • Absorbs impact without cracking
  • Resistant to moisture
  • Suitable for profiles that must conform during installation
  • Cost-effective for protective and flexible applications

LDPE is typically selected when a profile needs to flex easily, cushion contact, or protect adjacent surfaces, rather than hold shape, seal under compression, or withstand heavy wear.