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Aristech Acrysteel IGP Sheet is a
high-gloss, hard-surfaced sheet used in many outdoor applications.
MA has the same superior physical properties, including impact
resistance, but has a one-sided matte (non-glare) finish for
applications where a "flat" look is desired.
Aristech Acry'steel IGP and MA Sheets offer these advantages:
 They
are engineered thermoplastics that combine preferred physical
properties with advanced qualily and performance.
They have the same product characteristics and formabiliiy
that Aristech General Purpose Acrylic (GPA) has.. .with the
added advantage of greater impact resistance.
They are available in custom and standard sheet sizes, and
on continuous reels...in a wide range of pigmented colors.
They have proven color technology without special surface
protection. no UV barrier coatings, and no blue-tint hiding
agents are used in our process.
Impact Resistance.
Aristech Acrysteel Sheet has been engineered to have additional
impact strength in order to minimize sheet breakage during
fabrication, shipment, field installation and end-use. This
helps reduce costly sign face replacements. The drop-ball
impact strength of unformed Aristech Acrysteel Sheet is five
to six times greater than regular acrylic sheet.
Weather
Resistance
Aristech Acry'steel Sheet has shown excellent resistance to
outdoor weathering. Several years of laboratory and outside
field exposure testing, as well as actual case histories,
indicate that Acrysteel Sheet has exceptional non-yellowing
characteriSlics while retaining its impact strength. Extended
exposure tests in Arizona and Florida show that Acrysteel
Sheet retains most of its original impact resistance after
four years of exposure in a humid environment. And Acrysteel
Sheet has also maintained its good looks for a longer period
of time than other sign materials, making it a long-term,
quality investment.
Advantages
of Continuous Cast Aristech Acrysteel Sheet.
Surface
Hardness
Aristech Acrysteel Sheet has greater abrasion resistance than
extruded impact sheet products such as polycarbonate or DR.
Acrysteel Sheet's higher barcol hardness provides more resistance
to abrasion caused by airborne dirt and dust particles, important
in inner city and seaside environments.
| |
Polycarbonate |
DR® |
Acrysteel® |
GPA |
| Barcol
hardness |
20 |
25 |
40 |
48 |
Stiffness
Acrysteel Sheet, with its high flexural modulus, is stiffer
than DR making it less likely to bow or pull out of the retaining
frame.
| psi |
Polycarbonate |
DR® |
Acrysteel® |
GPA |
| Flex strength |
13,500 |
10.500 |
13,500 |
15,000 |
| Flex modulus |
340,000 |
286,000 |
380,000 |
450,000 |
Resistance to Distortion
The higher heat distortion temperature (HDT) of Acrysteel
Sheet offers better resistance to sheet
sagging during exposure to hot environments.
| |
Polycarbonate |
DR® |
Acrysteel® |
GPA |
| HDT (264
psi) |
270 °F
|
170 °F
|
180 °F
|
190 °F
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Advantages of Aristech Acrysfeel
Sheet for the sign manufacturer.
1.Thermoforming
Aristech Acrysteel Sheet has a wide thermoforming temperature
range (350°F to 390°F), thus providing the flexibility
necessary to form difficult parts with good detail at high
temperature; or to form at faster production rates at lower
temperatures. Acrysteel Sheet can also be reheated and reformed
in the event of production problems; this is a real cost savings
over polycarbonate and other sign materials which cannot be
reheated and reformed. Acrysteel Sheet does not require pre-drying
before thermoforming, which also saves time and money.
2. Shrinkage
Acrysteel Sheet has less unrestrained shrinkage than polycarbonate
or DR after thermoforming. It also has more uniform dimensional
stability like Aristech GPA. Thus, silk screening is easier
to control and yields less variation from batch to batch.
Acrysteel Sheet can be heated in sheet hanging ovens and free
formed without excessive draping or shrinkage
3. Fabrication
Aristech Acrysteel Sheet can be fabricated using the same
techniques as our GPA including gang cuffing, hot bending,
flame polishing and cold bending. Other advantages include
Acrysteel Sheet's ability to be cleaned, paintec and cemented.
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