8300 Datasheet, PDF (4/16 Pages) 3M Electronics – Static Dissipative Rigid Worksurface 8300 Series

D. Dimensional changes: These changes are measured according to NEMA test methods. Samples are first
aged for 24 hours at 70°F (21°C) and 10% relative humidity. The same samples are then aged another
7 days at 100°F (38°C) and 100% RH. The gross change in dimensions (in both the machine and
cross‑machine directions) is measured after aging.
Machine direction: 1.1 % maximum change
Cross‑machine direction: 1.4% maximum change
E. Use temperature range: ‑50°F (‑46°C) to 150°F (66°C)
NOTE: Continued use above 150°F will deteriorate the laminate. The controlling factor is the glue
line. The laminate itself could stand higher temperatures [up to 200°F (93°C)], but the potential
problems of shrinkage, adhesive failure, and substrate failure dictate lower use temperatures.
F. Postformability: 0.5 in. (13 mm) minimum radius when parallel to the machine direction, 0.625 in.
(16 mm) minimum radius when perpendicular to the machine direction.
3.0 Sheet sizes
A. 4 ft. x 8 ft. (48 in. x 96 in.) nominal
Normal shipping size: 48.75 in. x 96.75 in.
Minimum size: 48.125 in. x 96.5 in.
B. 3 ft. x 12 ft. (36 in. x 144 in.) nominal
Normal shipping size: 36.75 in. x 145.5 in.
Minimum size: 36.125 in. x 144.5 in.
C. 5 ft. x 12 ft. (60 in. x 144 in.) nominal
Normal shipping size: 61.25 in. x 145.5 in.
Minimum size: 60.5 in. x 144.5 in.
D. Other sizes
Normal shipping size: nominal dimensions +1.25 in.
Minimum size: nominal dimensions +0.5 in.
4.0 Packaging information
3M^™ Static Dissipative Rigid Worksurface 8300 Series is packaged according to 3M packaging standards.
The sheets are normally rolled and packed in vertical corrugated container with octagonal cross‑section. The
maximum number of sheets rolled up in a carton is determined by the weight of filled carton; the normal
number of sheets is five.
5.0 Shelf life
3M^™ Static Dissipative Rigid Worksurface 8300 Series does not deteriorate with time. However, laminate which
is to be postformed should be fabricated within one year of the date of manufacture. Laminate exposed to
extremely dry environments will shorten its shelf life. It is always good practice to rotate stock, using the oldest
material first.
6.0 Conditioning for fabrication
Preconditioning of laminate prior to fabrication is extremely important. The conditioning will affect
dimensional stability, formability, and the overall performance and handling of the laminate during fabrication.
Preconditioning is done to minimize dimensional changes due to the loss or gain of moisture. During the
process of making the papers used in laminate manufacture, the fibers are generally aligned in the machine
direction. Dimensional change is greater across the diameter of the fibers than along their length. As a result,
shrinkage is about twice as great in the cross direction as it is in the machine direction. An easy way to identify
the machine direction is to observe the sanding marks on the back of the laminate; these run in the machine
direction.

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