tesa® ACXplus 74508 Seal Line
0.8 mm heat activatable acrylic foam tape for mounting window seal and water box seal applications
Product description
tesa® ACXplus 74508 Seal Line is a deep black acrylic foam tape for permanent mounting of weather strips and water box seals, mainly on automotive glass. It has a heat-activatable adhesive on the non-liner side. 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 74508 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 74508 Seal Line absorbs and dissipates dynamic and static loads optimally. This exceptional capability enables tesa® ACXplus 74508 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.
Main features:
Compared to the conventional process with primer, tesa® ACXplus 74508 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 74508 Seal Line absorbs and dissipates dynamic and static loads optimally. This exceptional capability enables tesa® ACXplus 74508 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.
Main features:
- High stiffness is especially suitable for mounting water box profiles
- Efficient and secure bonding of the heat-activatable layer to seals
- PFAS / PFOS free Product
- Strong bonding of the heat-activatable layer to backing 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 74508 Seal Line can be widely used for mounting window seals, water box seals, sunroof seals, and obstacle detection systems (ODSs).
Product Construction
| Type of liner | PE/PP protection film |
| Backing material | foamed acrylic |
| Type of adhesive | modified acrylic |
| Total thickness | 0.8 mm |
| Color | deep black |
| Type of adhesive to glass | modified acrylic |
| 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 |
Adhesion to Values
| Adhesion to Glass (covered side, after 1 day) | 56 N/cm |
| Adhesion to Glass (covered side, after 10 days, warm / humid*) | 60 N/cm |
| Adhesion to Steel (covered side, after 3 days) | 26 N/cm |
| Adhesion to TPE (T-Peel, after 1 day) | 35 N/cm |
| Adhesion to TPE (T-Peel, after 10 days, warm / humid*) | 40 N/cm |
Additional Info
PV28 = filmic liner in royal blue, heat sealable, silicone free, works with heat tabbing tape
PV29 = filmic liner in royal blue, siliconized to adhesive side and silicone free to tabbing side, works with both heat and adhesive tabbing tapes
Adhesion to glass: glass is primed with black 1K isocyanate primer
T-Peel test: heat-activatable adhesive to standard TPE
1 Warm/humid storage: 240hrs. at 40°C and 100% r.h.
Adhesion data on glass and TPE are not part of the specification.
PV29 = filmic liner in royal blue, siliconized to adhesive side and silicone free to tabbing side, works with both heat and adhesive tabbing tapes
Adhesion to glass: glass is primed with black 1K isocyanate primer
T-Peel test: heat-activatable adhesive to standard TPE
1 Warm/humid storage: 240hrs. at 40°C and 100% r.h.
Adhesion data on glass and TPE are not part of the specification.
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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