3M 380AW User Manual
Transportation Safety Division
3M™ Stamark™ High
Performance All Weather Tape
Series 380AW
Product Bulletin 380AW
June 2020
Replaces Product Bulletin 380AW Dated February 2020
1 Description
3M™ Stamark™ High Performance All Weather Tape Series 380AW (“Tape”) is a durable pavement marking tape
that is highly retroreflective under both wet and dry conditions. The Tape utilizes specially designed optics to
provide wet and dry performance. The Tape can be used as an inlay marking on new asphalt or as an overlay
marking on most asphalt and concrete pavement surfaces in good condition.
Series A380AW: Used for lane lines, edge lines, channelizing lines, and gore markings.
Series L380AW: With liner. Used to cut symbols and legends.
SMS L380AW: With liner. Precut symbols and legends.
2 3M™ Stamark™ High Performance All Weather Tape Series 380AW June 2020
1.1 Product Features
o High retroreflective performance, when wet or dry
o Durable, conformable, and retroreflective
o Product design that provides long-term reflectivity
o Abrasion-resistant microcrystalline ceramic beads bonded in a highly durable polyurethane topcoat
o Manufactured with no (intentional) use of heavy metals, lead chromate pigments or other similar, lead-
containing chemicals
o Improved patterned surface that presents a near vertical surface to traffic to maximize retroreflectance
o Precoated with an extended season pressure sensitive adhesive (PSA) on bottom surface
o Nominal total thickness of 0.120 in. (3.0 mm)
oWhite: 380AW
o Yellow microcrystalline ceramic beads incorporated in 381AW tape to improve nighttime yellow color
o Yellow: 381AW
2 Specifications
2.1 Retroreflectivity
Table 1 presents minimum initial coefficient of retroreflected luminance (RL) values for tape under both wet
and dry conditions. Under dry conditions, R
E1710. Under wet conditions, R
reflectometer. R
values are expressed in millicandelas per square foot per footcandle [(mcd • ft-2) • fc-1].
L
is measured in accordance with ASTM E2832 or ASTM E2177 using a portable
L
is measured in accordance with the testing procedures of ASTM
L
Table 1. Minimum wet and dry R
Condition/Test
Entrance Angle
Observation Angle
Coefficient of Retroreflected
Luminance [mcd/m
a. An Entrance Angle of 88.76° and an Observation Angle of 1.05° are used to simulate the viewing geometry of a driver at a distance
of 30 meters.
Note: R
a
a
2
/lux]
values for Tape will be higher when measured under ASTM E2177 than when measured under ASTM
L
values for white and yellow Tape.
L
White (380AW) Yellow (381AW)
Dry
ASTM E1710
88.76° 88.76° 88.76° 88.76°
1.05° 1.05° 1.05° 1.05°
500 250 300 200
Wet & Rainy
ASTM E2832
Dry
ASTM E1710
Wet & Rainy
ASTM E2832
E2832. Regardless, stated minimum values shall be met using either test method.
Initial wet retroreflectance values must be measured in accordance with ASTM E2832 or ASTM E2177 prior to
installation. Wet retroreflectance values measured under a “condition of continuous wetting” (simulated rain)
shall be obtained in accordance with ASTM E2832. Wet retroreflectance values measured under a “condition
of wetness” (wet recovery) shall be obtained in accordance with ASTM E2177. To reduce measurement
variability, tests shall be performed in a controlled laboratory environment, on markings positioned in
accordance with ASTM E2832. Since new marking surfaces are hydrophobic, a wetting agent shall be used to
improve the wetting of test markings. A good wetting agent is a 0.1% by volume solution of liquid soap.
Measurements shall be reported as an average value for each roll tested, and averages shall be calculated
from a minimum of three measurements per roll.
2.2 Color
The daytime and nighttime colors of Tape conform to ASTM D6628, the Standard Specification for Color of
Pavement Marking Materials.
3 3M™ Stamark™ High Performance All Weather Tape Series 380AW June 2020
2.3 Skid Resistance
The patterned, retroreflective, pliant polymer surfaces of Tape shall provide average initial skid resistance
values of 45 BPN or more when tested according to ASTM E303, subject to the following modification:
o Skid resistance is calculated as the average of two measurements taken at an angle of 45° from one
another.
2.4 Patchability
Snow removal equipment and heavy traffic may cause wear and damage to Tape. Such damaged areas can be
repaired using patches made of Tape. Remove damaged Tape and replace it according to the instructions
presented in the “Overlay Applications” section of 3M Information Folder 5.7
.
3 Application
Install Tape according to the instructions presented in 3M Information Folder 5.7.
4 Durability
The Tape is weather resistant and provides excellent retroreflectivity and color retention. The Tape is a highly
effective lane marking material and will show no appreciable fading, lifting, shrinkage, or chipping for the duration
of the warranty period, when applied according to the 3M requirements described in the 3M product literature.
The Tape’s durability depends on several environmental and traffic conditions, including, but not limited to, snow
removal practices, method of application, and pavement and atmospheric conditions at the time of application. It is
recommended that the customer thoroughly evaluate Tape under the conditions present at the installation location
prior to large-scale implementation.
5Storage
Store indoors, in a cool, dry area. Use within one year of receipt.
6 Health and Safety Information
Read all health hazard, precautionary, and first aid statements found in the Safety Data Sheets (SDS) and Article
Information Sheets for important health, safety, and environmental information. To obtain SDSs and Article
Information Sheets for 3M products, go to 3M.com/SDS, contact 3M by mail, or for urgent requests
call 1-800-364-3577.
7 Warranty Information
7.1 3M Warranty
3M warrants that, under normal traffic conditions, Tape used in pavement marking applications will remain
visible and retain a minimum coefficient of retroreflected luminance (R
conditions when measured in accordance with ASTM E1710, and Tape used in long line pavement marking
applications will retain a minimum R
with ASTM E2832, for the periods presented in Table 2 (“Warranty Period”), as measured from the date of
installation (“Installation Date”), subject to the provisions presented in Table 2 (“3M Warranty”).
of 50 mcd/m2/lux under wet conditions when measured in accordance
L
) of 100 mcd/m2/lux under dry
L
Table 2. Warranty periods for Tape applied as longitudinal lines and as symbols and legends.
Application Warranty Period
Longitudinal Markings 4 years
Symbols and Legends
a. Retained RL performance of Tape is not warranted under
wet conditions for symbols and legends.
a
2 years
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