tesa® ACXplus 74512 Seal Line

Heat-activatable acrylic foam tape

Product description

tesa® ACXplus 74512 Seal Line is a deep black acrylic foam tape for permanent mounting of door seals, sun roof seals and Obstacle Detection System (ODS) profiles. The adhesive gets activated by hot air or near-infrared when applying it onto the PP/EPDM, PP, TPV, or TPE seal.

Compared to the conventional process with primer, tesa® ACXplus Seal Line ensures a highly secure bond to the rubber profile, enables a higher application speed than using primer, and realizes a more environmentally friendly production process.

Its outstanding cold shock resistance is based on a modified acrylic foam core, which assures a reliable bond even at extreme low temperatures. Being viscoelastic, tesa® ACXplus 74512 Seal Line absorbs and dissipates dynamic and static loads optimally. This exceptional capability enables tesa® ACXplus 74512 Seal Line to compensate for extreme physical stress caused by the different thermal elongation of bonded parts in rapidly changing temperatures.

The deep black color provides an enhanced appearance and high design flexibility.

The density of the acrylic foam is 800 kg/m³.

  • Outstanding dynamic T-block performance
  • Superior dynamic shear resistance
  • Ensure more accurate positioning on seals during the lamination process
  • PFAS / PFOS free Product
  • Efficient and secure bonding of the heat-activatable layer to seals
  • No lift up on curved surfaces
  • Strong bonding that withstands humidity and heat
  • Closed cell acrylic foam core for reliable sealing to prevent water penetration
  • High humidity and UV resistance
  • Excellent cold shock performance

Application Fields

tesa® ACXplus 74512 Seal Line can be widely used for mounting of door seals, sun roof seals, Obstacle Detection System (ODS) profiles and different types of seals for recreational vehicles.

Product Construction

Backing material foamed acrylic
Type of adhesive modified acrylic
Total thickness 1200 µm
Color deep black
Type of adhesive to seal heat-activatable

Properties / Performance Values

Elongation at break 400 %
Tensile strength 30 N/cm
Ageing resistance (UV) very good
Humidity resistance very good
Static shear resistance very good
Static shear resistance at 120°C > 10,000 min
Temperature range - 40 to + 80 °C

Adhesion to Values

Adhesion to Clear coat (after 20 min) 52 N/cm
Adhesion to Clear coat (after 24 hrs.) 52 N/cm
Adhesion to EPDM (after 10 days) 49 N/cm
Adhesion to EPDM (after 7 days) 60 N/cm
Adhesion to Steel (after 3 days) 32 N/cm

Additional Info

PV28 = royal blue film liner, heat sealable for heat tabbing, silicone free
PV29 = royal blue heat sealable and adhesive tabbable film liner
Adhesion to clear coat: tape mounted on tesa standard clear coat 3h after painting and curing
Adhesion to EPDM: T-Peel Test, all tests reach cohesive failure
Temperature range and static shear resistance: values are load dependent

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.

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