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3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting
  • 3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting

3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting

Brand Name: 3M

Series Number: 3400

Construction: Microprismatic

Performance Level: Engineer Grade

Color: White, Red, Yellow, Blue, Green, Brown

Adhesive Type: Pressure-sensitive

Durability: 7 years

Size: 1.22x45.7m

Substrates: Aluminum

Imaging Method: Digital Print, Overlay / Electrocut Films, Screen Print

Application: Sign, express road, cutting

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Product Description

3M 3400 EGP Engineering Grade Prismatic Reflective Sheeting

Adhesive Type Pressure-sensitive
Application Instructions See Product Bulletin
Applications Barriers & Barricades, Construction work zones, Drums & Channelizers, Non-regulated & Commercial Signs, Traffic control devices, Traffic Signs
Availability Custom, Standard
Brand 3M
Certifications and Specifications ASTM Type I
Color White 3430, Yellow 3431, Red 3432, Blue 3435, Green 3437, Brown 3439
Construction Microprismatic
Durability 5-7 years
Imaging Method Digital Print, Overlay / Electrocut Films, Screen Print
Length 50 Yard
Length (Metric) 45.7 m
Liner Yes
Mark EGP
Performance Level Engineer Grade
Product Code 3427, 3430, 3431, 3432, 3435, 3437
Product Series 3400
Packing 1 Roll for each carton
Substrates Aluminum
Width 48 Inch, can be cut to different width
Width (Metric) 1219.2 mm, can be cut to different width

Description
3M™ Engineer Grade Prismatic Reflective Sheeting Series 3430 is a non-metalized microprismatic
lens retroreflective sheeting designed for production of reflective commercial signs and noncritical
traffic control signs that are exposed vertically in service. Series 3430 sheeting can easily be
identified by the visible integral “EGP” marking. When applied to properly prepared sign substrates,
Series 3430 sheeting provides long-term reflectivity and durability.
Series 3430 sheeting is available in the following colors: White 3430, Yellow 3431, Red 3432, Blue 3435, Green 3437, Brown 3439
3M™ Engineer Grade Prismatic Reflective Sheeting Series 3400 Series exceeds reflectivity within the engineer grade class
Robust design aids hand application to large substrate sheets
Reliable performance of polycarbonate cube corners
Meets and exceeds ASTM D4956 Type I specification
Better daytime and nighttime brightness than engineer grade with glass bead optics
Performance life of seven years
Made with significantly less VOCs, waste and energy use that glass bead sheeting

 

Sign Fabrication Methods
Application
Series 3430 sheeting incorporates a pressure sensitive adhesive and should be applied to the sign substrate at temperature of 65°F/18°C. All direct applied copy and border MUST be cut at all panel seams and squeegeed at the joint.

 

Splices
Series 3430 sheeting must be butt spliced when more than one piece of sheeting is used on one piece
of substrate. The sheeting pieces should not touch each other. This is to prevent buckling as the
sheeting expands when subject to extreme temperature and/or high humidity levels.
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, substrates found to be most reliable and durable are properly prepared aluminum
sheets and extrusions. Users are urged to carefully evaluate all other substrates for adhesion and sign
durability. Other substrates that may be satisfactory for proper application of sheeting will have the
following characteristics:
• Clean
• Smooth
• Flat
• Rigid
• Dimensionally stable
• Weather resistant
• Non-porous
• High surface energy (passes water break test)
Refer to Information Folder 1.7 for surface preparation recommendations. Substrates with low surface
energy may require additional preparation such as flame treatment, mechanical abrasion or use of
adhesion promoters prior to sheeting application.
Engineer grade prismatic sheeting is designed primarily for applications to flat substrates. Any use
that requires 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 the substrate or improper surface preparation are not the responsibility of 3M.

 

Screen Processing
Engineer grade prismatic sheeting may be screen processed into traffic signs before or after mounting
on a sign substrate, using 3M™ Process Colors Series 880I or Series 880N. Series 880I or 880N
process colors can be screened at 60–100ºF (16–38ºC) at relative humidity of 20–50%. A PE 157
screen mesh with a fill pass is recommended. Refer to Information Folder 1.8 for details. Clear
coating is not required or recommended. Use of other process colors series is not recommended. Care
should be taken to avoid flexing series 3430 sheeting before and especially after screening to
eliminate the possibility of cracking from improper handling techniques.
For screenprinted areas on white sheeting when processed according to 3M recommendations, the
coefficients of retroreflection shall not be less than 70% of the value for the corresponding color in
Table A. The color chromaticity and luminance shall conform to Table B.

 

Cutting and Matching
Engineer grade prismatic sheeting may be cut into letters and shapes of at least three inches in height
and stroke widths of at least one half inch. Smaller sizes are not recommended. Sealing cut edges of
Series 3430 sheeting is not required.

 

Plotter Cutting
Programmable knife cut (electronic cutting)
1. Flat bed plotters can either die cut or kiss cut and offer the most consistent and reliable performance.
2. Friction fed plotter. Kiss cut only. Success has been achieved using plotters that have 600 grams
of down force and a 60º cutting blade. Additional drive wheels may need to be added to improve
tracking. An alternative procedure is to cut sheeting from the liner side. Blade force and knife
depth must be set to score but not cut through the topfilm. Break apart individual copy or apply
premask to retain spacing.
Other Cutting Methods
Engineer grade prismatic 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 have 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 3430 sheeting is one and a half inch 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™ Engineer Grade 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 the sign.

 

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