Double-sided adhesive tape 4976

sealingmountingpolyurethane

Product overview
tesa® 4976 is a double-sided tape with a conformable black open-cell PU foam backing and a tackified acrylic adhesive, designed for mounting and sealing on uneven surfaces.

Key features

• Compensates design tolerances
• Levels different thermal expansion of materials
• Shock absorption and sealing function
• High short-term temperature resistance

Main applications

• Fixing mirrors, decorative profiles and signs
• Mounting cable channels and trim

Product construction
Backing material: PU foam
Colour: black
Colour of liner: brown
Thickness of liner: 70 µm
Total thickness: 540 µm
Type of adhesive: tackified acrylic
Type of liner: glassine
Weight of liner: 80 g/m²

Properties / Performance values
Elongation at break: 250%
Tensile strength: 6.66 N/cm
Softener resistance: medium
Temperature resistance (long term): 80 °C
Static shear resistance at 40 °C: good
Temperature resistance (short term): 200 °C
Static shear resistance at 23 °C: good
Humidity resistance: low
Chemical resistance: medium
Tack: good
Ageing resistance (UV): medium

Adhesion to values
Adhesion to ABS (initial): 7 N/cm; (after 14 days): 12 N/cm
Adhesion to Aluminium (initial): 5 N/cm; (after 14 days): 9 N/cm
Adhesion to PC (initial): 8 N/cm; (after 14 days): 12 N/cm
Adhesion to PE (initial): 4.1 N/cm; (after 14 days): 4.3 N/cm
Adhesion to PET (initial): 5.5 N/cm; (after 14 days): 10 N/cm
Adhesion to PP (initial): 3.7 N/cm; (after 14 days): 7.4 N/cm
Adhesion to PS (initial): 5 N/cm; (after 14 days): 10 N/cm
Adhesion to PVC (initial): 5.5 N/cm; (after 14 days): 12 N/cm
Adhesion to Steel (initial): 10 N/cm; (after 14 days): 12 N/cm

Peel Adhesion / Additional Info

• Immediately: foam splitting on Steel, Aluminium, ABS, PC, PS, PET, PVC
• After 14 days: foam splitting on Steel, Aluminium, ABS, PC, PS, PET, PVC

Technical specifications

• Model: tesa® 4976
• Backing material: PU foam
• Colour: black
• Liner: glassine, brown, 70 µm, 80 g/m²
• Total thickness: 540 µm
• Adhesive: tackified acrylic
• Temperature resistance (short term): 200 °C; (long term): 80 °C
• Elongation at break: 250 %; Tensile strength: 6.66 N/cm