3
Product Bulletin/Technical Data Sheet
Release A, Effective December, 2011
Specular Film on Metal
Product
Description
3M™ Specular Film on Metal (the "Film" or “Product”) is a polymeric film laminated on
either an aluminum or a steel substrate for use in tubular passive daylighting applications in
residential and commercial buildings.
Recommended
End Uses
The Product is intended to be used as the primary reflecting duct material in tubular solar
daylighting applications ("TDD").
Key Attributes
ƒ
Available in both aluminum and galvanized steel in various gauges
ƒ
All polymeric construction insensitive to humidity degradation.
ƒ
Highest visible reflectivity, including high incidence angles, and color retention available
commercially.
Product
Characteristics
Below are typical values for the Product. These are based on test data deemed reliable, but are not
warranted, except for the Warranted Characteristics identified on Page 5.
Characteristic
Value
Test
Photopic Reflectivity
CIE a* & b* reflected color (D65, 2° Obs)
> 99%
ASTM E1164/E308
0 ± 2 units
ASTM E1164/E308
Usage Angle
0 to 90 degrees
Film
Liner, Protective
Adhesive
Width
Total Thickness (nominal)
Film + Adhesive
Substrate
Total Density
Film + adhesive
Aluminum
Galv steel
Polymeric film
Polyethylene
Pressure sensitive
48+ inches
‐
‐
‐
Linear scale
4.1 mils (.10 mm)
15‐20 mils (.38‐.50mm)
Micrometer
30 ft²/lb (6 m²/kg)
2.7 g/cm²
7.8 g/cm²
Combustibility
Horizontal Burn Rate
HB/CC1
ASTM D635
Certifications
Flame Spread Index
Class A
ASTM E84
Smoke Developed Index
Class A
ASTM E84
Surface Flammability
Passed
ASTM E162
Specific Optical Density of Smoke
Passed
ASTM E662
Toxicity
Passed
BSS 7239
Optical
Physical
‐
Technical Data Sheet, Specular Film on Metal ‐ 1
3M 1038876v4
Typical Reflection Spectra
Typical Normal Angle
Spectral Response
% Reflectivity
100
90
80
70
60
780
730
680
630
580
530
480
430
380
50
Wavelength (nm)
Industry Performance
Comparison*
Definitions/Calculations
*These are based on test data from 2010‐2011 deemed reliable, but not warranted. The
acronyms and equations below will be referenced in the following table and charts.
CCT = Correlated Color Temperature
TDD = Tubular Daylighting Duct
AOI = Angle of Incidence (degrees from normal)
LTE = Light Transfer Efficiency
CTM = Color Temperature Maintenance
LTE =
Exiting Luminous Flux
X 100
Ambient Solar Luminous Flux
CTM =
Exiting CCT
X 100
Ambient Solar CCT
TDD Efficiencies
‐ Industry Comparison
ANGULAR DEPENDENT LUMINOUS SPECULAR REFLECTIVITY
Product Average Luminous Specular Reflectivity (1)
Enhanced Silver Coated
AOI
3M Specular Film on Metal
Aluminum
8
99.4
96.9
20
99.2
96.8
30
99.2
96.9
40
99.1
96.9
50
98.9
96.6
60
98.7
96.5
(1) Luminous Specular Reflectivity measured on Perkin Elmer Lambda 1050
Spectrophotometer with Universal Reflectance Accessory (URA).
Technical Data Sheet, Specular Film on Metal ‐ 2
3M 1038876v4
LIGHT TRANSFER EFFICIENCY ("LTE")
3M Specular Film on Metal vs Enhanced Silver Coated Aluminum
COLOR TEMPERATURE MAINTENANCE ("CTM")
3M Specular Film on Metal vs Enhanced Silver Coated Aluminum
Technical Data Sheet, Specular Film on Metal ‐ 3
3M 1038876v4
Minimum UV
Protection
The Film must be protected from UV solar radiation. The following
chart and data table show the Minimum UV Protection for a TDD's
protective dome or window needed for the 3M Warranty (see
Limited Warranty Section below).
Minimum UV Protection
Transmission (log10 scale)
1.00000
0.10000
0.01000
0.00100
0.00010
365
370
375
380
385
390
395
400
Wavelength (nm)
Transmission data obtained using a Shimadzu model UV2401 PC UV/Vis
Spectrophotometer.
Raw Absorbance Data Table
wave
365
366
367
368
369
370
371
372
373
374
Abs
3.50
3.53
3.55
3.56
3.56
3.56
3.56
3.57
3.56
3.56
wave
375
376
377
378
379
380
381
382
383
384
Abs
3.56
3.56
3.56
3.56
3.53
3.52
3.50
3.47
3.41
3.32
wave
385
386
387
388
389
390
391
392
393
394
Abs
3.19
3.00
2.79
2.56
2.32
2.09
1.87
1.68
1.49
1.32
wave
395
396
397
398
399
400
Abs
1.18
1.05
0.92
0.81
0.71
0.62
Transmission = (I/Io) = 10‐(Abs)
Absorbance = ‐Log10(I/Io)
Io = reference intensity
I = sample intensity
Your 3M customer service representative will have a list of
commercially available UV protection materials that, when new,
will meet the Minimum UV Protection. Please note that you will
need to determine the suitability and long‐term durability of the
UV protection material you chose for your TDD.
Handling &
Fabrication
•
Perform all rolling, cutting, assembly, and installation with the
Film's protective liner intact. Remove the protective liner only
after TDD is secured to building frame and is no longer
Technical Data Sheet, Specular Film on Metal ‐ 4
3M 1038876v4
exposed to dust, debris, water, or physical contact.
•
Film rolls are heavy; so use lifting equipment when handling
them.
•
TDD Forming Application Temperature must be a mininum of
72°F (22°C).
Cleaning
Do not attempt to dust or clean the Film once the protective liner
is removed.
Recommended
Storage
Conditions
Warranted
Characteristics
Film should be stored for no more than a year in original
container, out of sunlight, and in a clean, dry area that is between
40° to 100°F (4° to 38°C).
Initial‐
Warranted
Characteristics
Characteristic
Value
Test
CIE a* & b* reflected color (D65, 2° Obs)
0 ± 2 units
ASTM E1164/E308
Photopic Reflectivity
> 99%
ASTM E1164/E308
Characteristic
Value
Test
Photopic Reflectivity
> 98%
ASTM E1164/E308
Long‐Term
Warranted
Characteristics
Limited
Warranty &
Limited
Remedy
Limited Warranty
1. 3M warrants that (the "3M Warranty"):
(a) on buyer's receipt of Product ("Purchase Date"), Product will have the Initial
Warranted Characteristics stated above (“Initial Warranty”): and
(b) for a period of twenty years from Purchase Date (the “Warranty Period”), the
Product will have the Long‐Term Warranted Characteristics stated above
provided that from Product shipment date the Product always has: (i) the UV
Minimum Protection stated above; (ii) been stored, applied, installed, used, and
maintained in accordance with 3M’s recommendations in this Product
Technical Data Sheet, Specular Film on Metal ‐ 5
3M 1038876v4
Bulletin/Technical Data Sheet and in all Other Product Information (as defined
below); and (iii) no more than passive sunlight on it, with no magnifier or
concentrator (“Long‐Term Warranty”).
2. EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, THE 3M
WARRANTY IS MADE IN LIEU OF ALL OTHER WARRANTIES, RIGHTS OR
CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND THOSE ARISING FROM A COURSE OF DEALING, CUSTOM OR
USAGE OF TRADE. THE BUYER IS RESPONSIBLE FOR DETERMINING IF A
PRODUCT IS SUITABLE FOR ITS PARTICULAR PURPOSE AND APPLICATION
METHODS.
3. For a buyer’s convenience, 3M may provide engineering or technical
information, recommendations, installation instructions, and other information
or materials relating to Product (“Other Product Information”), but 3M makes
only the 3M Warranty and does not warrant any Other Product Information.
4. 3M has no obligation under the 3M Warranty as to Product that has been: (a)
stored, applied, installed, or used in a manner other than that 3M recommends
in this Product Bulletin/Technical Data Sheet and in Other Product Information;
(b) damaged through contact with a person or thing, misuse, accident, neglect,
or other action by anyone other than 3M; or (c) affected by environmental
forces or stresses, (such as thermal cracking), excessive heat or humidity, or
exposure to soot, water or dirt.
Limited Remedy
If any Product is proven not to have met the Initial Warranty on 3M’s shipment
date or the Long‐Term Warranty during the Warranty Period, then the buyer’s
exclusive remedy, and 3M’s sole obligation, will be, at 3M’s option, to replace
that Product quantity or refund the applicable purchase price.
Limitation of Liability
3M WILL NOT UNDER ANY CIRCUMSTANCES BE LIABLE TO A BUYER FOR DIRECT
(other than the Limited Remedy stated above), SPECIAL, INCIDENTAL, INDIRECT
OR CONSEQUENTIAL DAMAGES (INCLUDING, WITHOUT LIMITATION, LOSS OF
PROFITS) IN ANY WAY RELATED TO A PRODUCT, THIS PRODUCT
BULLETIN/TECHNICAL DATA SHEET, OR OTHER PRODUCT INFORMATION,
REGARDLESS OF THE LEGAL OR EQUITABLE THEORY ON WHICH SUCH DAMAGES
ARE SOUGHT.
Technical Data Sheet, Specular Film on Metal ‐ 6
3M 1038876v4