Polyethylene

HDPE & LDPE

(High Density and Low Density Polyethylene)

Polypropylene For Dummies. AKA, For The BeginnerAmerican Made Plastics

Why use HDPE/LDPE in your applications:

  • Light Weight
  • Stain, Odor and Moisture Resistant
  • FDA & NSF Approval for Food Contact
  • Vacuum and Thermo-Formable Material
  • Very Durable and Abrasion Resistant

Polypropylene For Experts

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Both these materials…

exhibit high impact strength, abrasion resistance and low coefficient of friction. Very light weight (density of .91 – .96) and extremely durable.  FDA and NSF approved for food contact. Low forming temperature for ease of vacuum or thermo-forming.

  • Self Lubricating and Low Co-Efficient of Friction
  • Very High Chemical Resistance
  • Low Specific Gravity (Floats in Water)
  • Can be Heat Welded or RF Welded
  • High Impact Strength and Energy Absorption
  • Excellent Wear Resistance and FDA/NSF Approved
  • Exceptional Low Temperature – Brittle at -110ºF

Both materials are in the Polyolefin family of plastics, along with Polypropylene (PolyPro) and UHMW (Ultra High Molecular Weight). Manufactured by a variety of manufacturers under the names: Polyboard®, Polymar®, Hostalen®, Polystone®, Hitec®, Sanatec®, Sanalite®, Ultra Ethylux®, Polycarve®, and Densetec®.

American Made Plastics

HDPE, High Density Polyethylene Sheet Pricing

Sheet Pricing

HDPE, LDPE, Polyethylene Round Rod Pricing

Rod Pricing

Mfg Data Sheet HDPE, PolyethyleneHDPE Data SheetTypical MSDS HDPE PolyethyleneHDPE Typical MSDS Sheet
Mfg Data Sheet LDPE PolyethyleneLDPE Data Sheet
Machining Guidelines PolyethyleneMachining GuidelinesChemical Resistance Chart - Polyethylene HDPEChemical Resistant Chart

Material Availability

Extruded Sheet:
.030 - 2.0" in 48" X 96" Smooth Surfaces Natural Sheet in HDPE, 1" max. for LDPE
Black available in many sizes of HDPE
Film: .015" - .060" in 48" wide Natural
Rod: .250" - 10" diameter in Natural HDPE - 96" lengths
From 12" and up to 30" diameter in 48" lengths or 39" lengths in HDPE 
Black is available in many sizes of HDPE
Tube: .250" OD - 10" OD in various wall thicknesses. Most available in HDPE and many in LDPE
Special Formulations:
Conductive, Static Dissipative, Custom sizes, Formulations, Profiles or Colors.

 


Typical Resin Properties:

General PropertyASTM
Test
Typical Value HDPETypical Value   LDPE
Specific Gravity D792.941 – .965
.91 – .925
Tensile Strength YieldD6383,800 – 5,500
1,400 – 2,000
Izod Impact – NotchedD2562.0 – 3.5
>16
Vicat Softening Temp
D1525257ºF219ºF
Hardness – RockwellD785D60 -70
D42 – 50
Continuous Use Temp
-100 – 180ºF
174ºF
Deflection Temp @ 66 psiD648171

124Co. Thermal ExpansionD6967X10-54.6 -5.5X10-5

Applications –  is used frequently in:

    • Cutting Board and Food Preparation Surfaces
    • FDA, USDA, NSF  Compliant Machined Parts
    • Heat Formed and Vacuum Formed Parts
    • Dasher Board For Ice Rinks – Impact Parts
    • Welded Tanks, Hoppers, Silo Linings and Slide Chutes

 

  • Chemical and Structural Tanks and Covers
  • Food Processing Equipment, Valve and Pump Components
American Made Plastics

HDPE, LDPE, Polyethylene Sheet Pricing

Sheet Pricing

HDPE, LDPE, Polyethylene Round Rod Pricing

Rod Pricing

Mfg Data Sheet HDPE, PolyethyleneHDPE Data SheetTypical MSDS HDPE PolyethyleneHDPE Typical MSDS Sheet
Mfg Data Sheet LDPE PolyethyleneLDPE Data Sheet
Machining Guidelines Polyethylene HDPEMachining GuidelinesChemical Resistance Chart - Polyethylene HDPEChemical Resistant Chart

These Properties are for evaluation purposes only. This information is not to be construed as a warranty,  guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No  warranty as to this materials suitability are either expressed or implied.

For great abrasion resistance, very low density and FDA/NSF compliance, Polyethylene is an excellent choice.