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Labels intended for outdoor
use need to be durable and have the ability to hold up to a wide variety of
different weather conditions. Vinyl and polyester are top material
choices for outdoor conditions.
The matte finish on the vinyl
media helps reduce glare, while the polyester's glossy
finish creates a sharp, shiny image. Bumper
stickers are, typically, made of vinyl.
Often
outdoor labels or industrial labels require a UL
listing. UL recognition ensures that a device, system
or material has been tested and certified by this private
organization to meet specific safety standards. The three
primary tests to determine film and adhesive performance are
a heat age test, outdoor weatherability, and exposure to
various solutions. CSA is another testing organization
devoted to establishing standards for safety, quality and
performance. Unlike UL, which recognizes a substrate’s
adhesion to specific individual surfaces, CSA recognizes
nine substrate groups for applied labels. Silk
screening or special inks may be required to help with the
fading of inks.
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