3M Engineer Grade Reflective Labels, RL

  1. Scope. This specification covers die cut numbers & letters, markers or other digits made from engineer grade reflective sheeting made by 3M. The digits made from the reflective film are applied by hand either to the Electromark plastic panel or to a metal surface. The labels shall a heavy adhesive having a high initial tack that is appropriate for rough or textured transformer surfaces.
  2. Government Specifications. The reflective label material shall meet the following criteria:
  1. CIE Color Values. The film shall have the following CIE daytime chromaticity corner coordinates:
     
    2. Points White   Yellow  
      X Y X Y
    1 0.303 0.287 0.498 0.412
    2 0.368 0.353 0.557 0.442
    3 0.340 0.380 0.479 0.520
    4 0.274 0.316 0.438 0.472

 

  1. Daytime Luminance. The film shall have the following Luminance Factors (Cap Y%):
     
    2. White Yellow
    34.8 minimum 29 minimum
    -- 45 maximum

 

  1. Reflective Intensity. The film shall have the following coefficient of retroreflection (as measured in candelas per footcandle per sq ft):
     
    2. Observation Angle Entrance Angle White Yellow
    0.2º -4º 70 50
    0.2º +30º 30 22
    0.5º -4º 30 25
    0.5º +30º 15 13

 

  1. Thickness. The film shall be fabricated from a 0.002" thick acrylic adhesive, a 0.005" thick methylacrylate film and a 0.007" thick kraft paper liner.
  2. Adhesive. The adhesive shall either be a very high tack adhesive suitable for application at 0ºF ("RL") or a slightly firmer adhesive that can be applied at temperatures greater than 35ºF ("RE"). The adhesives shall be solvent based acrylic adhesives having the following values (using PSTC #1 at 70ºF and a 24 hour dwell):
     
    3. Bonding Surface Ounces/In of Width
    Lexan (corona treated) 50
    Stainless Steel 60

 

  1. Operating Temperature Range. The markers must be capable of operation within the temperature range of -30ºF to +190ºF with no obvious degradation or signs of wear or peeling/flagging.
  2. Printing & Processing. The background of the digits shall be screen printed using the approved 3M black, gloss ink matched for the reflective substrate. The typeface shall be Helvetica or Univers. The decal shall be screen printed and processed in accordance with 3M Information Bulletins.
  3. Size. The reflective markers shall be as follows:
     
    4. Item No Height Width Letter Height
    Reflect-1.0 1-1/2" 1" 1"
    Reflect-1.5 1-7/8" 1-3/8" 1-1/2"
    Reflect-2.0 3" 1-1/2" 2"
    Reflect-2.5 2-7/8" 1-3/4" 2-1/2'
    Reflect-3.75 4-1/4" 2-7/8" 3-3/4"
    Reflect-4.0 4-3/8" 2-15/16" 4"
    Reflect-6.0 7" 5" 6"

 

  1. Tab or Backslit. Markers shall have a backslit liner or a tab for easy peeling of the liner. Markers may be packaged individually or on a notebook sheet. The tab on the notebook sheet may be at the margin of the page. Notebook sheets shall have holes in the left margin so that they can be included in a standard three-ring binder.
  2. Packaging. 25 pieces shall be packaged in a polyethylene bag or vacuum formed package. Each bag or package shall identify its contents, date of manufacture and inspector. Bags or packages shall be packaged in a corrugated carton.
  3. Installation. Marker shall be applied to a clean, dry surface. If the markers are not applied to an Electromark panel, use a 3M Scotchbrite pad (or equivalent) to remove any surface oxidation, dirt or paint chalking from application surface and to rough up the surface. After this treatment the surface shall be cleaned with Surface Prep 77 or equal. Labels shall be applied at temperatures above 0ºF for the low temperature adhesive ("RL") or above 35ºF for the standard adhesive ("RE"). After proper adhesive cure, markers shall be tamper-resistant.
  4. Warranty. The products are to be guaranteed by the vendor to be free of workmanship or material defect. If, for reasons of workmanship or material defect, the marker becomes unreadable during a period of seven years, the vendor shall replace the marker at no additional charge.

 

ELECTROMARK'S OBLIGATION UNDER THIS WARRANTY IS LIMITED TO REPLACEMENT OF THE PRODUCT. OUR PRODUCT IS SOLD WITHOUT ANY WARRANTY OF MERCHANTABILITY AND WITHOUT ANY WARRANTY THAT OUR PRODUCT IS GOOD FOR ANY PARTICULAR PURPOSE. OUR PRODUCTS ARE SOLD WITH THE UNDERSTANDING THAT THE USER WILL DETERMINE THEIR ADAPTABILITY FOR HIS INTENDED USES. WE ARE NOT BOUND BY ANY OTHER WARRANTY, EXPRESSED OR IMPLIED. UNDER NO CIRCUMSTANCES ARE WE LIABLE FOR ANY LOSS, DAMAGE, EXPENSE OR CONSEQUENTIAL DAMAGES OF ANY KIND ARISING OUT OF THE USE OR INABILITY TO USE OUR PRODUCTS.