01 July 2012
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Details of constructive bonding tapes range revealed

Tapes specialist tesa has provided more detail of the products making up its ACXplus range – a recently launched category of adhesive tapes for constructive bonding that offer additional strength for this specific application.

The range will include 705x, an invisible bonding solution for transparent and translucent materials, and 706x which provides immediate adhesion on substrates with a lower surface energy, such as plastics and powder-coated materials. tesa ACXplus 707x completes the trio with long-term resistance against extreme temperatures and outstanding shock resistance, down to -40°C in cold environments.

The high performance seen in the strength of the tapes' bonding power, stress dissipation and resistance to both weather and temperature are based on viscoelasticity; a material performance defined by both elastic and viscous characteristics. The technology employs a special acrylic adhesive that combines both effects to provide excellent results.

Dissimilar materials show different elongations when temperatures change and this creates extreme physical stresses that need to be dissipated for the bond to remain durable. The elastic restoring forces provide inner strength while the viscous part of the material behaviour leads to relaxation of mechanical stresses.

The key performance benefits in stress dissipation are uniquely available to these products up to three times the tapes' thickness. In other words, a 0.5mm tape can for example compensate for expansion in bonded materials up to 1.5mm.

Author
Paul Gay

Related Companies

tesa UK Ltd

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