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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®

TECHNICAL RESOURCES

  LDPE Data Sheet
​  LDPE for O&P Data Sheet
​  TECAFINE® LDPE Data Sheet
​  FDA Compliant Plastics
EXPLORE OTHER PRODUCTS & SERVICES

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.

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.

EXPLORE DUPONT™ VESPEL® SP POLYIMIDE MATERIALS
High strength, stiff, low friction engineering plastic with good wear properties.
High strength, stiff, low friction engineering plastic with good wear properties.
High strength, stiff, low friction engineering plastic with good wear properties.
High strength, stiff, low friction engineering plastic with good wear properties.
High strength, stiff, low friction engineering plastic with good wear properties.
High strength, stiff, low friction engineering plastic with good wear properties.

TYPICAL PROPERTIES OF LDPE

  UNITS ASTM
TEST
HOMOPOLYMER
ACETAL
COPOLYMER
ACETAL
TECAFORM®
HPV13
PTFE-FILLED
ACETAL
20% GLASS
FIBER FILLED
HOMOPOLYMER
ACETAL
Tensile strength psi D638 10,000 9,800 6,800 8,500
Flexural modulus psi D790 420,000 370,000 350,000 730,000
Izod impact (notched) ft-lbs/in
of notch
D256 1.5 1.0 0.7 0.8
Heat deflection
temperature
@ 264 psi
°F D648 257 230 244 316
Maximum continuous
service temperature
in air
°F   185 195 185 185
Water absorption
(immersion
24 hours)
% D570 0.25 0.20 0.22 0.25
Coefficient of
linear thermal
expansion
in/in/
°Fx10-5
D696 6.8 6.1 5.1 2.0 - 4.5
Coefficient of
friction (dynamic)
    0.20 0.21 0.12 0.35

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