3M 3930 HIP High Intensity Prismatic Reflective Sheeting

Description
3M™ High Intensity Prismatic Reflective Sheeting Series 3930 is a non-metalized microprismatic lens reflective sheeting for production of reflective work zone signs
Durable, tough topcoat aids against scuffs and scratches
Meets ASTM D4956 Type III, IV
Performance warranted for up to 10 years
Series 3930 sheeting provides long-term reflectivity and durability
High Intensity Prismatic Reflective Sheeting Series 3930 (“Sheeting”) is a non-metalized microprismatic lens
reflective sheeting designed for use in the production of durable reflective traffic control signs, work zone devices,
and delineators that are exposed vertically in service (“Signs”). Applied to properly prepared Sign substrates, 3M
Series 3930 prismatic Sheeting provides long-term reflectivity and durability.
Series 3930 Sheeting is available in the following colors: White 3930, Yellow 3931, Red 3932, Orange 3934, Blue 3935, Green 3937, Brown 3939.
 
Application
Series 3930 Sheeting should be applied to Sign substrates at temperatures of 65ºF (18ºC). All direct applied copy and border MUST be cut at all panel seams and squeegeed at the joint.
 
Splices
Series 3930 Sheeting must be butt spliced when more than one piece of Sheeting is used on a single piece of
substrate. Sheeting pieces should not touch one another. This is to prevent the buckling that can occur as Sheeting
expands under extreme temperature and humidity conditions.
 
Double Faced Signs
The Sheeting on the bottom side of a double faced Sign can be damaged if rolled through a squeeze roll applicator
with an unprotected steel bottom roller. The use of a semi-soft flat sheet between the steel roller and the applied
Sign face will provide protection from damage. A material such as a rubber mat, tag board, or cardboard is
recommended.
 
Substrates
For traffic Sign use, the substrates that have been found to be most reliable and durable are properly prepared
aluminum sheets and extrusions. Users are urged to carefully evaluate adhesion and Sign durability properties of
all other substrates. Other substrates suitable for secure and durable applications of Series 3930 Sheeting have
the following characteristics:
• Clean
• Smooth
• Flat
• Rigid
• Dimensionally stable
• Weather resistant
• Non-porous
• High surface energy (pass water break test)
Refer to 3M Information Folder 1.7 for surface preparation recommendations. Substrates with low surface energies
may require additional preparation steps, such as flame treatment, mechanical abrasion, or use of adhesion
promoters prior to Sheeting application. Guide Sign extrusions may be edge wrapped. Flat panels and unwrapped
extrusions must be carefully trimmed so that Sheeting sections on adjacent panels do not touch on assembled
Signs.
High intensity prismatic Sheeting has been designed primarily for application to flat substrates. Any application to a
substrate with a radius of curvature of less than five inches should also be supported by rivets or bolts. Plastic
substrates are not recommended where cold shock performance is required. Sign failures caused by substrate
failures or improper surface preparations are not the responsibility of 3M.
 
Imaging
High intensity prismatic Sheeting may be processed into traffic Signs using any of the imaging methods described
below. 3M assumes no responsibility for the failures of Sign face legends or backgrounds that have been
processed with non-3M process colors or with matched component imaging materials other than those listed
below.
 
Screen Processing
Series 3930 Sheeting may be screen processed into traffic Signs using 3M Process Colors Series 880I or Series
880N before or after being mounted onto a substrate. Series 880I and 880N process colors can be screened at
temperatures of 60-100ºF (16-38ºC) and at relative humidities of 20-50%.
 
Cutting
Series 3930 Sheeting may be cut into letters and shapes with heights of at least 3 inches and stroke widths of at
least ½ inch. Smaller sizes are not recommended. Sealing the cut edges of Series 3930 Sheeting is not required.
 
Plotter Cutting
Programmable knife cut (electronic cutting):
1 Flat bed plotters can be used to either die cut or kiss cut Series 3930 Sheeting and offer the most consistent and
reliable performances.
2 Friction fed plotters can be used to kiss cut only. This is achieved using 600 grams of down force and a 60º
cutting blade. Additional drive wheels may be needed to improve tracking. Alternatively, Series 3930 Sheeting
can be cut from the liner side. To do so, the blade force and knife depth must be set to score, but not cut through,
the topfilm. After scoring, break apart individual copy or apply premask to retain spacing.
Other Cutting Methods
Series 3930 Sheeting may be hand cut or die cut one sheet at a time, and band sawed or guillotined in stacks.
Cutting equipment such as guillotines and metal shears, which place pressure plates on the Sheeting when cutting,
may damage the optics. Padding the pressure plate and easing it down onto the sheets being cut will significantly
reduce damage. Maximum stack height for cutting Series 3930 Sheeting is 1 ½ inches, or 50 sheets.
 
Cleaning
Signs that require cleaning should be flushed with water, then washed with a detergent solution
and a soft bristle brush or sponge. Avoid pressure that may damage the sign face. Flush with water
following washing. Do not use solvents to clean signs.
 
Storage and Packaging
3M™ High Intensity Prismatic Sheeting should be stored in a cool, dry area, preferably at 65–75ºF
(18–24ºC) and 30–50% relative humidity and should be applied within one year of purchase.
Rolls should be stored horizontally in the shipping carton.
 
Installation
Nylon washers are required when twist style fasteners are used to mount Signs.