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NEC, Birmingham(B40 1NT)

28/09/2021 - 30/09/2021

PPMA Show 2021 will be the UK’s largest ever event dedicated to state-of-the-art processing and (more)

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06/10/2021 - 07/10/2021

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03/11/2021 - 04/11/2021

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The Flexibility of an acrylic or urethane adhesive in an instant

The Flexibility of an acrylic or urethane adhesive in an instant

With its Loctite 4902 Henkel offers industry - and in particular the medical device sector - a unique combination of performance characteristics. This product combines the traditional benefits of an instant adhesive with flexibility, resistance to leaks and excellent sealing capability.

Cyanoacrylates, better known as instant adhesives, have become highly popular in manufacturing and assembly thanks to their rapid speed of cure, ease of use and bond strength.  However the joint they create is sometimes too inflexible for certain applications.  

Where bond lines need to withstand movement or expansion and sealing capability is required, Henkel's Loctite 4902 offers a good solution.  This highly flexible adhesive offers elongation of up to 155% and yet still provides a high-strength bond in seconds.

The elongation of a traditional 'instant' is typically less than 2% so this addition is truly in a class of its own and rivals the flexibility commonly provided by acrylic and urethane adhesives.

The clear and colourless Loctite 4902 also carries the ISO 10993 biocompatibility standard making it suitable for the assembly of medical devices.  It facilitates the use of dissimilar - plastics, rubbers and metals - and opaque substrates while enhancing the overall performance of the device.  

Typically, this low viscosity, single-part adhesive will be used to bond close-fitting, flexible parts; the use of a primer can also enhance the bond strength of difficult-to-bond substrates such as polyethylene or polypropylene. An activator can also be applied to the surface where larger bond gaps need to be bridged.

 

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