FSC 9310                                                         JCP R10
                     PRESSBOARD, COLORED (TYPE III)
Miscellaneous Board                                     February 1, 1999

Use information: This paragraph is informational only and is not 
    exclusively definitive of the end use.
  For face and back letterpress printing of filing guides, cloth or 
paper-stripped covers, and two-piece covers for use with bindings such 
as combs, wire-o, and spiral. Printed matter may include text, line 
illustrations, and solid reverses.

Stock: Not less than 50 pct recovered fiber of which 20 percentage 
  points shall be postconsumer fiber. Postconsumer fiber, in any 
  percentage over 20 percentage points, is encouraged, provided that the 
  requirements of this Standard are met.

Bursting strength: Average, not less than        1,240    1,380    1,520
  Equivalent (lb/in\2\)......................      180      200      220

Thickness: Average (mm)......................     0.38     0.51     0.64
  Equivalent (inch)..........................    0.015    0.020    0.025

    A tolerance of 0.03 mm (0.001 inch) shall be allowed on 
  the 15- and 20-point pressboard. On the 25-point pressboard, a 
  tolerance of -0.03 mm (0.001 inch) and +0.04 mm (0.0015 inch) shall be 

Density: Shall average 0.8 to 1.0 g/cm\3\.
Surface: Shall be close in texture, hard, smooth, and free from 
  irregularities and blisters.
General appearance: The color and cleanliness shall conform to the 
  standard sample(s) adopted by the Government.
  Color: The paper board in the order (or publication) shall be uniform. 
  The color variation shall not exceed DE(CIELAB)=1.0. Board shall match 
  the established Government standard for blue, light green, red, or as 
  specified. The commercial color standard is applicable, unless 
  specified that the color shall conform to the Government standard. 
  Colors shall not fade and shall appear even and uniform on the surface 
  of the board.
Sampling and testing: Shall be conducted in accordance with standards in 
  Part 2, Government Paper Specification Standards. The precision 
  requirements of the acceptance criteria (Part 4) shall apply.


 Unless otherwise specified, the following is automatically waived when 
  printing or duplicating is to be accomplished on commercial contract
Curl: Paper board shall lie flat with either no tendency to curl or with 
  a curl which can be overcome under reasonable working conditions.
Size and trim: Paper board shall be furnished in the size(s) ordered and 
  shall be flat, trimmed square on four sides with clean smooth edges, 
  and evenly jogged. A tolerance of 2 mm (\1/16\ inch) shall 
  be allowed. Successive sheets within any package
  shall not differ from each other by more than 0.5 mm (\1/64\ inch). 
  Paper board with the long dimension 813 mm (32 inches) or less

  shall be considered square if the variation does not exceed 1 mm (\1/
  32\ inch); over 813 mm (32 inches), 2 mm (\1/16\ inch).

Grain: Direction of grain on flat board shall be as ordereed.

Pressroom conditions: The bulk of this paper board will be used in air-
  conditioned pressrooms maintained at 24  deg.C 2  deg.C 
  45 pct 8 pct relative humidity.