FSC 9310 JCP L24
VELLUM-BRISTOL COVER, WHITE AND COLORED
Cover Paper February 1, 1999
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Use information: This paragraph is informational only and is not
exclusively definitive of the end use.
For high quality multicolor face and back offset printing of reply
cards, brochures, programs, covers for books, periodicals, etc. Printed
matter may include text, line illustrations, halftones up to 150-line
screen, and solid reverses.
Unless the option below is specified, the following `basic'
specification applies.
Stock: Groundwood pulp, not to exceed 1 pct.
Note: \1\ Not less than 30 pct postconsumer fiber. Any percent over
30 percentage points, is encouraged, provided that the requirements of
this Standard are met.
Grammage (g/m\2\)..................................... 125 145
Basis weight: 22\1/2\ by 28\1/2\ inches, 500 sheets 57 67
(pounds)...........................................
A tolerance of 5 pct shall be allowed.
Bursting strength: Average, not less than
(kPa)............................................... 190 220
Equivalent (lb/in\2\)............................... 28 32
Tearing strength: Average, each direction, not
less than (mN)...................................... 880 1,070
Equivalent (grams).................................. 90 110
Opacity: Average, not less than (percent)............. 93 94
No individual specimen shall average less than
(percent).......................................... 91 92
Thickness: \2\ Average, not less than (mm)............ 0.178 \ 0.178 \
3\ 3\
Equivalent (inch)................................... 0.0070 0.0070
Any specimen averaging less than 0.178 mm (0.0070 inch) shall be
sufficient cause for rejection of the paper.
General appearance: Paper shall conform to the standard sample(s)
adopted by the Government.
Color: The paper in the order (or publication) shall be uniform with a
target brightness of 81 pct for the white stock. The color variation
shall not exceed DE(CIELAB)=1.0.
For colored stock, paper shall match one of the established
standards or as specified. Colors shall not fade and shall appear even
and uniform on the surface of the sheet. Stock shall not be 2-sided.
Color coordinates for selected standards are included in Part 3.
Finish and formation: Shall be uniform.
Cleanliness: The dirt count for each side of the paper shall not
exceed 650 specks per square meter. No sample sheet (600 to 650 cm\2\
in size) shall contain more than one defect with an equivalent area of
0.25 mm \2\ or greater.
Sampling and testing: Shall be conducted in accordance with standards in
Part 2, Government Paper Specification Standards.
OPTION
Option A: Alkaline paper. This option is for products requiring above
average permanence for white stock only.
The following requirements replace the same in the `basic'
specification and are added to the specification.
Stock: 100 pct bleached chemical woodpulp.
Note: Postconsumer fiber, in any percentage, is encouraged, provided
that the requirements of this Standard are met.
Acidity: pH value by cold extraction shall be not less than 7.0. The
paper shall contain not less than 2 pct calcium carbonate.
Any deviation in this requirement shall be sufficient cause for
rejection of the paper.
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Unless otherwise specified, the following is automatically waived when
printing or duplicating is to be accomplished on commercial contract
Sizing: Paper shall be surface- and internal-sized suitable for
satisfactory printing on both sides of the paper on high-speed offset
presses equipped with continuous flow or brush dampening systems.
Color: Shall match the Government's standard sample for color. A
deviation of DE(CIELAB)=3.0 from the color standard for white and 2.0
for colored stocks is allowed. A color difference 1.0 DE unit between
felt and wire sides is permitted.
Curl: Paper shall lie flat with either no tendency to curl or with a
curl which can be overcome under reasonable working conditions.
Surface: Shall be free from lint, fuzz, or any particle which will pick,
lift, fluff, or pile on the blanket under normal press conditions.
Size and trim: Sheets: Paper 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 except for sheets 216 by 356 mm (8\1/2\ by 14
inches) or less; then a tolerance of 1 mm (\1/32\ 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 with
the long dimension 813 mm (32 inch) 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 the grain on flat paper shall be as ordered.
Pressroom conditions: The bulk of this paper will be used in air-
conditioned pressrooms maintained at 24 deg.C 2 deg.C
and 45 pct 8 pct relative humidity.
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\1\ This requirement may be waived by the ordering agency when
purchasing less than a mill run quantity and so stated in the
procurement document.
\2\ This property is automatically waived when the paper is not used
for the production of reply cards.
\3\ This is not the nominal caliper for the weight of the stock but
a requirement for reply card use.