LDPE / HDPE
Low density polyethylene (LDPE) is an integral part of Poly Hi Solidur's polyolefin product line. LDPE is more flexible than HDPE, which makes it a good choice for prosthetic devices, most of which are either drape formed or vacuum formed. Its impact resistance makes it a natural for impact pads, while its easy machinability makes it a good choice for fabricated parts where chemical and corrosion resistance is demanded.
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Characteristics: |
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• Light-weight |
• Good impact resistance |
• Extremely flexible |
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• Easily cleaned |
• Thermoforming performance |
• Meets food handling guidelines |
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• No moisture absorption |
• Chemical-and corrosion-resistant |
End uses of LDPE include:
• Industries: Industrial, Medical, Thermoforming
•Applications: Die Pads, Hinges , Impact pads, Orthotic and Prosthetic devices, Thermoformed parts
LDPE is stress relieved and a "natural" color. It is available in 48" x 96" sheets with gauge sizes ranging from 1/16" to 1".
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Physical |
Method |
Unit |
Value |
Unit |
Value |
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Melt Index |
D-1238 |
g/10 min |
1.25 |
na |
na |
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Density |
D-792 |
kg/m3 |
920 |
lbs/ft3 |
57.39 |
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Yield Point |
D-638 |
MPa |
9.4 |
psi |
1363 |
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Tensile Break |
D-638 |
MPa |
13.4 |
psi |
1943 |
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Elongation at Break |
D-638 |
% |
515 |
% |
515 |
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Tensile Modulus |
D-638 |
MPa |
287 |
psi |
41615 |
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Flexural Modulus |
D-790 |
MPa |
197 |
psi |
28565 |
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Flexural Strength |
D-790 |
MPa |
8.1 |
psi |
1175 |
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Izod Impact |
D-4020 |
J/m |
No Break |
ft-lbx/inch |
No Break |
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Tensile Impact |
DIN 53448 |
kJ/m2 |
843 |
ft-lbs/in2 |
401 |
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Hardness |
D-2240 |
Shore D |
55 |
Shore D |
55 |
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Melt Point |
D-3417 |
°C |
110 |
°F |
230 |
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Heat Deflection |
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264 psi |
D-668 |
°C |
36.7 |
°F |
98 |
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66 psi |
– |
– |
43.3 |
– |
110 |
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Volume Resistivity |
D-257 |
Ohm-cm |
>1015 |
Ohm-cm |
>1015 |
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Surface Resistivity |
D-257 |
Ohm |
>1015 |
Ohm |
>1015 |
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Water Absorption |
D-570 |
% |
slight |
% |
slight |
* Values are averages and are not specifications.
** ASTM test methods are under current procedures.
HDPE (High Density - Polyethylene)
Poly Hi Solidur's high density polyethylene (HDPE) is used in a variety of applications and industries where excellent impact resistance, high tensile strength, low moisture absorption and chemical- and corrosion-resistance properties are required.
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Characteristics: |
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• Light-weight |
• Chemical-and corrosion-resistant |
• Low moisture absorption |
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• Non-staining |
• Thermoforming performance |
• High tensile strength |
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• Non-toxic |
• Meets FDA/USDA food handling guidelines (natural color) |
End uses of HDPE include:
Industries: Chemical storage, Liquids storage, Medical, Recreational vehicles, Thermoforming
Applications: Light duty chain guides, Orthotic and prosthetic devices, Secondary containment, Tanks,Thermoformed material handling devices, Water storage
Availability:
Poly Hi Soildur's HDPE is stress relieved and available in:
• Black, 48" x 96" sheets with gauge sizes ranging from 1/8" to 1"
• Natural: 48" x 96" sheets with gauge sizes ranging from 1/16" to 4"
• Natural: 48" x 120" sheets with gauge sizes ranging from 1/8" to 2"
• Natural: 60" x 120" sheets with gauge sizes ranging from 1/8" to 1"
• Extruded (up to 1" thick) and pressed sheet (from 18" through 4" thick)
HDPE Rod (High Density Polyethylene)
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Characteristics: |
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• Excellent machine ability |
• Good chemical and heat resistance (200°F range) |
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• Low coefficient of friction |
• Exhibits outstanding low temperature strength in contrast to Poly-Pro |
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• FDA approved |
• For UV resistance carbon black is added to the HDPE extrusion compound |
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• Very good abrasion resistance |
Availability:
•Colors: Natural White and Black
• Sizes: Up to 20" diameter
• 24" and 271/2"- Black color only
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HDPE Rod Dia |
lb/ft |
HDPE Rod Dia |
lb/ft |
HDPE Rod Dia |
lb/ft |
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1/4" |
0.019 |
2" |
1.225 |
7" |
13.500 |
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3/8" |
0.043 |
2-1/4" |
1.550 |
8" |
21.428 |
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1/2" |
0.076 |
2-1/2" |
1.914 |
10" |
32.000 |
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5/8" |
0.120 |
2-3/4" |
2.320 |
11" |
40.000 |
|
3/4" |
0.172 |
3" |
2.756 |
12" |
46.000 |
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7/8" |
0.234 |
3-1/2" |
3.752 |
14" |
63.000 |
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1" |
0.306 |
4" |
4.900 |
16" |
80.000 |
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1-1/8" |
0.388 |
4-1/2" |
6.202 |
20" |
1.000 |
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1-1/4" |
0.478 |
5" |
7.657 |
24" |
195.00 |
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1-1/2" |
0.689 |
5-1/2" |
9.265 |
27.5" |
265.00 |
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1-3/4" |
0.938 |
6" |
11.626 |
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* Custom cut to length discs available in rod diameters 6" through 27.5"