Polyester Film Tape
850
Technical Data
Product Description
July, 2011
3M? Polyester Film Tape 850 can generally be used for splicing and applications
where chemical resistance and/or clean removal is necessary. The silver backing is
a transparent polyester with a thin layer of aluminum.
Product Construction
Backing
Polyester
Adhesive
Acrylic (transparent)
Color
Transparent, Red,
Standard Roll Length
72 yds. (66 m)
Black, White, Silver
Typical Physical
Properties
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
ASTM Test Method
Adhesion to Steel:
Silver:
Tensile Strength at Break:
Elongation at Break:
Backing Thickness:
Total Tape Thickness:
Water Vapor Transmission Rate:
Silver:
Temperature Use Range:
30 oz./in. width (33 N/100 mm)
42 oz./in. width (46 N/100 mm)
28 lbs./in. width (491 N/100 mm)
120%
0.9 mil (0.02 mm)
1.9 mils (0.05 mm)
1.6 gms. H 2 O/100 sq. in./24 hrs.
(24.8 g/m 2 /24 hrs.)
0.9 gms. H 2 O/100 sq. in./24 hrs.
(7.75 g/m 2 /24 hrs.)
-60°F to 300°F (-50°C to 150°C)
D-3330
D-3330
D-3759
D-3759
D-3652
D-3652
D-3833
D-3833
Features
? Prolonged exposure to sunlight or hot caustics will cause backing to become
brittle and lose tensile strength.
? Thin, high strength polyester film helps reduce failures due to breakage while
meeting low caliper requirements.
? Chemical and solvent resistance to help reduce rejects produced from chemical
and solvent attack.
? Abrasion resistant to help protect surface from abrasion and rough handling.
