tesa® 4939

Removable d/s PET-cloth, differential rubber based adhesive system

Product description

tesa® 4939 is a double-sided floor laying tape. It consists of a strong PET-cloth backing in combination with a differential rubber adhesive system.

The special formulated adhesive on the open side combines a high initial bonding power with a residue free removability up to 14 days from the most common surfaces. (Needs to be tested individually before usage!)

Product Construction

Type of liner glassine
Backing material cloth, rayon cloth, Fabric
Type of adhesive synthetic rubber
Total thickness 235 µm
Color white
Color of liner brown

Properties / Performance Values

Elongation at break 25 %
Tensile strength 38 N/cm
Ageing resistance (UV) medium, good
Chemical resistance good
Fogging very good
Humidity resistance good
Static shear resistance at 40°C good
Static shear resistance at 70°C medium, good
Tack very good
Temperature resistance long term 40 °C
Temperature resistance short term 80 °C

Adhesion to Values

Adhesion to PE (initial) 2.5 N/cm
Adhesion to PE (after 14 days) 2 N/cm
Adhesion to PE (covered side, after 14 days) 5 N/cm
Adhesion to PE (covered side, initial) 4.5 N/cm
Adhesion to PP (initial) 4.5 N/cm
Adhesion to PP (after 14 days) 2.5 N/cm
Adhesion to PP (covered side, after 14 days) 5 N/cm
Adhesion to PP (covered side, initial) 6.5 N/cm
Adhesion to Steel (initial) 7.5 N/cm
Adhesion to Steel (after 14 days) 5.5 N/cm
Adhesion to Steel (covered side, after 14 days) 8 N/cm
Adhesion to Steel (covered side, initial) 9 N/cm
tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.