BLOCK PATTERN CONSPICUITY, (PB)
Technical Specifications
Durability
5 years
Description:
The BLOCK PATTERN CONSPICUITY is a tough, weather and solvent resistant microprismatic retroreflective sheeting designed for rugged outdoor use on the sides and rear of trucks, trailers, school buses, farm equipment, automobiles and all types of mobile and industrial equipment. The sheeting is composed of cube corner (microprism) retroreflective elements integrally bonded to a flexible, smooth-surfaced, tough and weather resistant UV stabilized polymeric film. The prism surfaces are coated with a vacuum deposition of aluminum to provide a mirror surface to the prism facets. The resulting tape is not more than 0.008 inch thick and comes with an aggressive high-tack pressure sensitive adhesive.
Colors
The BLOCK PATTERN CONSPICUITY is available in white, gold, yellow, orange, red, green, and blue colors providing brighter, more vivid daytime colors than previously available in metalized microprism sheeting. The colors conform to the requirements in Table 1 when tested in accordance with ASTM practices E308 and E1164 and standards E1347 and E1349. The measured values are the average of eight readings. The test sample is rotated 45 Degrees about its own axis after each reading.
Reflectivity
The BLOCK PATTERN CONSPICUITY shall meet or exceed the minimum coefficient of retroreflection shown in Table 2. The sheeting shall be measured in accordance with ASTME810. Rotation angles of 0 degree and 90 degrees are measured and averaged.
Table 1 - COLOR SPECIFICATION LIMITS
COLOR: White:
Chromaticity Coordinates* = 1
X=.303, Y=.300
Chromaticity Coordinates* = 2
X=.368, Y=.366
Chromaticity Coordinates* = 3
X=.340, Y=.393
Chromaticity Coordinates* = 4
X=.274, Y=.329
Luminance Factor (Y percent)
Min.=27.0, Max=----
COLOR: Gold:
Chromaticity Coordinates* = 1
X=.375, Y=.405
Chromaticity Coordinates* = 2
X=.405, Y=.445
Chromaticity Coordinates* = 3
X=.438, Y=.412
Chromaticity Coordinates* = 4
X=.399, Y=.381
Luminance Factor (Y percent)
Min.=18.0, Max=30.0
COLOR: Yellow:
Chromaticity Coordinates* = 1
X=.498, Y=.412
Chromaticity Coordinates* = 2
X=.557, Y=.442
Chromaticity Coordinates* = 3
X=.479, Y=.520
Chromaticity Coordinates* = 4
X=.438, Y=.472
Luminance Factor (Y percent)
Min.=15.0, Max=45.0
COLOR: Orange:
Chromaticity Coordinates* = 1
X=.558, Y=.352
Chromaticity Coordinates* = 2
X=.636, Y=.364
Chromaticity Coordinates* = 3
X=.570, Y=.429
Chromaticity Coordinates* = 4
X=.506, Y=.404
Luminance Factor (Y percent)
Min.=14.0, Max=30.0
COLOR: Red:
Chromaticity Coordinates* = 1
X=.648, Y=.351
Chromaticity Coordinates* = 2
X=.735, Y=.265
Chromaticity Coordinates* = 3
X=.629, Y=.281
Chromaticity Coordinates* = 4
X=.565, Y=.346
Luminance Factor (Y percent)
Min.=2.5, Max=12.0
COLOR: Green:
Chromaticity Coordinates* = 1
X=.026, Y=.399
Chromaticity Coordinates* = 2
X=.166, Y=.364
Chromaticity Coordinates* = 3
X=.286, Y=.446
Chromaticity Coordinates* = 4
X=.207, Y=.771
Luminance Factor (Y percent)
Min.=3.0, Max=9.0
COLOR: Blue:
Chromaticity Coordinates* = 1
X=.140, Y=.035
Chromaticity Coordinates* = 2
X=.244, Y=.210
Chromaticity Coordinates* = 3
X=.190, Y=.255
Chromaticity Coordinates* = 4
X=.065, Y=.216
Luminance Factor (Y percent)
Min.=1.0, Max=10.0
(*) The four pairs of chromaticity coordinates determine the acceptable color in terms of the CIE 1931 Standard Colorimetric System measured with CIE Standard Illuminant D65.
Table 2:
Coefficient of Retroreflection*
(Candles/Lux/Square Meter)
Observation Angles: 0.2 degree
Entrance Angles: -4 degrees
White: 460
Gold: 425
Yellow: 310
Orange: 185
Red: 75
Green: 75
Blue: 35
Observation Angles:
Entrance Angles: 30 degrees
White: 250
Gold: 230
Yellow: 165
Orange: 100
Red: 60
Green: 60
Blue: 20
Observation Angles: 0.5 degree
Entrance Angles: -4 degrees
White: 100
Gold: 90
Yellow: 70
Orange: 40
Red: 25
Green: 25
Blue: 10
Observation Angles:
Entrance Angles: 30 degrees
White: 65
Gold: 60
Yellow: 45
Orange: 25
Red: 15
Green: 15
Blue: 5
Adhesive
The adhesive is protected by a release liner that shall be removed by peeling, without soaking in water or other solvents. The adhesive produces a bond such that a one-inch wide strip shall support a 1-3/4 pound weight for five minutes without the strip peeling a distance of more than two inches when applied to a smooth aluminum surface.
Impact Resistance
Following application to a smooth surface aluminum rectangle, 0.020 inch by 3 inch by 6 inch, the specimen is conditioned for 24 hours at 72 degrees F and 50 percent relative humidity. The sheeting shall show no cracking when the face of the panel is subjected to an impact of a two pound weight with a 5/8 inch (.625 inch) rounded tip dropped from a 100 inch pound setting on a Gardner variable impact tester, IG-1120.
Shrinkage
A 9 inch by 9 inch specimen of the sheeting with liner is conditioned a minimum of one hour at 72 degrees F and 50 percent relative humidity. The liner is then removed and the specimen is placed on a flat surface with the adhesive side up. Ten minutes after the liner is removed and again after 24 hours, the specimen is measured to determine the amount of dimensional change. The specimen will not shrink in any dimension more than 1/32 inch, (0.03125 inch), in 10 minutes and 1/8 inch, ).125 inch), in 24 hours.
Flexibility
The sheeting is conditioned for 24 hours at 72 degrees F and 50 percent relative humidity. The release liner is removed and the sheeting is sufficiently flexible to show no cracking when bent in one second's time around a 1/8-inch, (.125 inch), diameter mandrel with the adhesive contacting the mandrel.
Solvent Resistance
The BLOCK PATTERN CONSPICUITY meets the requirements of LS-300C solvent resistance, section 3.6.7, when tested as specified in Table VI, test method 4.4.6.
Specular Gloss
The sheeting shall have a specular gloss of not less than 40 when tested in accordance with ASTM method D523 at an angle of 85 degrees.
Application
Material should be applied to a smooth, clean, dry surface at temperatures ranging from 50 degrees F to 100 degrees F.
Durability
5 years
All statements, technical information and recommendations contained herein are based on tests we believe to be reliable, but the accuracy or completeness thereof is not guaranteed and the following is made in lieu of all warranties, express or implied. Seller's and manufacturer's only obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable for any injury, loss or damage, direct or consequential, arising out of the use of or the inability to use the product. Before using, user shall determine the suitability of the product for their intended use, and user assumes all risk and liability whatsoever in connection therewith.
