Tecbond 7784 – The polyamide adhesive for bonding difficult substrates

Power Adhesives’ range of polyamide hot melts offers users tough, long-lasting bonds on a variety of substrates that would otherwise prove difficult to join. The composition of these adhesives means they are far more chemically resistant than hot melts made from EVA or polyolefin.

Tecbond 7784 is an amber adhesive designed for use on metal, wood, glass, ceramics, and many plastics. 7784 has been specially formulated to provide both high and low-temperature resistance, with strong and flexible bonds at temperatures as high as 120°C and as low as -60°C. This makes it especially useful for many product-assembly and electrical applications involving working machinery.

As with many other polyamide adhesives, 7784 is resistant to most oils, fuels, and grease as well as mild chemicals. It is commonly used in car engines and oil filters to not only hold components in place but also prevent some components from coming into contact with each other (such as oil filter fins). Using 7784 in these circumstances cuts down on extra material costs and provides a less destructive method of bonding compared to bolting and welding.

Due to the difficult substrates it needs to bond and the environments it’s used in, tecbond 7784 features a very high molten tack. This ensures an almost instant grab upon compression, removing the need for clamping or holding in place.

To complement its high tack, tecbond 7784 benefits from a long open time, allowing users to accurately position materials before forming the bond. For users with automated processes, the extended open time removes the worry of potential adhesive failure from cold bonds or low compression times. Additionally, once set, the bond provides an oxygen barrier, lessening the likelihood of mold in oxygen- and moisture-rich environments.

Available in 12 and 15mm sticks, and 43mm slugs, tecbond 7784 works best with the range of tec applicators. Both adhesives and applicators are developed alongside each other to provide optimal results and the best possible performance for the user. 7784 is also available in bulk pellets.

Sealed in foil-coated, resealable bags, tecbond 7784 is protected from oxygen and moisture, giving it a guaranteed shelf life of two years – double that of comparable polyamide adhesives.

For additional information, including sample requests, please don’t hesitate to contact our sales team.

sales@poweradhesives.com

+44 (0)1268 885801

Tagged as

Tecbond 7784

Sizes (mm):
12, 15, 43
Chemistry:
Polyamide
Open time:
Medium
Application temp:
195-215°C
Viscosity / cPs:
5500 @ 190 °C
SP
135°C
HR:
120°C
Low temp:
-60°C
Colour:
Amber
If you’d like any additional information or would like to request a sample, do not hesitate to contact our sales team.

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