^{3M Aluminum Foil Tape 425 427 Acrylic Adhesive}

^{3M 金屬鋁箔膠帶 425 427 丙烯酸膠黏劑}

3M Aluminum Foil Tapes 425 and 427 are 5 mil nominal dead soft aluminum foil backing combined with a transparent acrylic adhesive. 3M aluminum foil tape 427 offers an easy-release liner.

Backing: Dead soft aluminum

Adhesive:  Acrylic

Color: Shiny silver

Standard Roll Length: 60 yds. (55 m)
Adhesion to Steel:
3M aluminum foil tape 425 47 oz./in. width (51 N/100 mm)
3M aluminum foil tape 427 50 oz./in. width (55 N/100 mm)

Tensile Strength: 30 lbs./in. width (525 N/100 mm)
Backing Thickness: 2.8 mils (0.07 mm)
Total Tape Thickness: 4.6 mils (0.12 mm)
Liner Thickness: 3M aluminum foil tape 427 3.1 mils (0.08 mm)
Elongation at Break: 8%
Temperature Use Range: -65° to 300°F (-54° to 149°C)
Water Vapor Transmission Rate: 0.1g H2O/100 sq. in./24 hrs.  (1.55 g/m2/24 hrs.)
Approximate Weight: 0.013 lbs./yd./in. width (4.77 gms/m/24 mm)

• Flame resistant.  • The very low moisture vapor transmission rate makes these tapes a good sealant.
• The acrylic adhesive, combined with the durable aluminum backing, offers ideal properties for long serviceable life in and outdoors. • Good candidate as a maskant in electroplating of aluminum because it will not contaminate the bath.
• Aluminum backing provides excellent reflection of both heat and light. • Best results obtained when applied to a clean, dry surface above 32°F (0°C).

• Aircraft paint stripping maskant. • Moisture barrier in “white goods” appliances. • General purpose heat reflector and heat dissipator. • Mechanically hold wires and cooling coils in “white goods” appliances. • Repair tears on truck trailers and aircraft. • Splicing of thin gauge foils. • General purpose holding, patching, sealing applications – indoors and out.

• Flame resistant. Meets U.L. 746C (File E 122798) and 723, Class “L” low flammability rating (File R 7311). • 3M aluminum foil tape 425 can be certified to meet L-T-80C. • Meets requirements of FAR 25.853(a). • The very low moisture vapor transmission rate makes these tapes a good sealant. • The acrylic adhesive, combined with the durable aluminum backing, offers ideal properties for long serviceable life in and outdoors. • Good candidate as a maskant in electroplating of aluminum because it will not contaminate the bath. • Aluminum backing provides excellent reflection of both heat and light. • Best results obtained when applied to a clean, dry surface above 32°F (0°C)