A-A-2848
Table I- Physical Properties
|
Property, Units |
Property Value |
ASTM Test Method |
|
Density, g/cm3 |
|
D 792 or D 1505 |
|
PET |
1.29-1.41 |
|
|
PETG |
1.23-1.29 |
|
|
Spectral transmittance for Class 1 material, % |
|
D 1003 |
|
Thickness < 0.030 inch |
85 minimum |
|
|
Thickness = 0.125 inch |
80 minimum |
|
|
Tensile strength at yield, Mpa |
43 minimum |
D 002 or D 638 |
3.2 Dimensions. The sheet dimensions shall be as listed in Table II. The tolerances for the strength and width shall be + 1/16 (1.6 mm) inch for dimensions 12 inches (30.5 cm) and less. For dimensions greater than 12 inches (30.5 cm), the tolerances shall be + 1/8 inch (3.2 mm). Rolls shall have a length tolerances of + unlimited, -1 inch (2.5 cm). adjacent edges of sheets shall intersect at a angle of 90o + 2o. The thickness tolerances shall be as listed in Table III.
Table II- Dimensions
|
Form |
Length |
Width |
Thickness |
|
Sheet |
4 |
3 |
0.0050 |
|
Sheet |
6 |
4-1/2 |
0.0030 |
|
Sheet |
8 |
6 |
0.0050 |
|
Sheet |
12 |
10 |
0.0050 |
|
Sheet |
50 |
20 |
0.125, 0.030, 0.020, 0.015, 0.005 |
|
Sheet |
42 |
40 |
0.020 |
|
Roll |
50 feet |
21 |
0.0050 |
|
Roll |
50 feet |
40 |
0.010, 0.008, 0.005 |
Note: All dimensions are inches unless otherwise specified.
Table III- Thickness Tolerance
|
Thickness, inch |
Tolerance, inch |
|
0.003, 0.005 |
+ 0.0010, - 0.0005 |
|
0.008, 0.010 |
+ 0.001 |
|
0.015, 0.020 |
+ 0.002 |
|
0.030 |
+ 0.003, -0.002 |
|
0.125 |
+ 0.007, 0.005 |
3.3 Adhesive backing. The type I plastic sheet shall have a pressure-sensitive adhesive coating with a removable paper backing. The adhesive shall be placed on the underside of plastic sheets with a matte finish.
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