LDPE

LDPE is Widely Used For:

  • Orthotics
  • Prosthetics

Performance Characteristics:

  • Soft and pliable
  • Easy to weld and heat seal
  • Good chemical resistance
  • Low moisture absorption

Common Brands:

  • Orthoform®
  • Densetec
  • TECAFINE®


LDPE

Soft, flexible, lightweight plastic material that is easy to fabricate and form

LDPE (low density polyethylene) is a soft, flexible, lightweight plastic material. It is often used for orthotics and prosthetics. LDPE has good chemical and impact resistance and is easy to fabricate and form.

Shop for LDPE

 

STANDARD SIZES
INDUSTRIAL SHEET Dimensions:
48 in x 96 in
Thickness:
0.030 in – 0.500 in
O&P SHEET Dimensions:
12 in x 12 in – 48 in x 96 in
Thickness:
0.030 in – 0.500 in
ROD Outside Diameter:
0.250 in – 16 in
OPTIONS AVAILABLE
COLOR Sheet:
Natural, Black

Rod:
Natural
Texture, Surface, Pattern Smooth

Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes available upon request.

 

LDPE MATERIAL OPTIONS

LDPE Sheet Stress Relieved– offers improved machinability and dimensional stability over extruded LDPE.

FDA Compliant LDPE– LDPE is available in FDA compliant grades.

LDPE Sheet for O&P– Low Density Polyethylene is more flexible than HDPE, polypro, or copoly PP, making it an excellent choice for pediatric AFOs, some splints, and flexible socket interfaces.

Modified LDPE Sheet for O&P– Modified polyethylene is slightly stiffer than LDPE, but more flexible than HDPE, polypro, or copoly PP. It is used for applications where flexibility and light support are required.

Tech Tip– LDPE materials can be difficult to decorate with transfer paper.

 

Typical properties of LDPE
  UNITS ASTM TEST LDPE
Tensile strength psi D638 1,400
Flexural modulus psi D790 30,000
Izod impact (notched) ft-lbs/in of notch D256 no break
Heat deflection temperature @ 264 psi °F D648 122
Maximum continuous service temperature in air °F   -
Water absorption (immersion 24 hours) % D570 0.10
Coefficient of linear thermal expansion in/in/°Fx10-5 D696 -

Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.

Need more information about this material? Use our interactive plastic properties table