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Case Study: Bonding LED Road Signs

In this case study, we explore how a Huntsman Araldite product was used for the effective bonding of LED road signs.

Table of Contents

bonding leds in road sign

Case Study: Bonding LED Road Signs

The Challenge

An electric roadsign manufacturer was looking for an effective bonding solution that endured harsh conditions. This adhesive was to bond directional funnels to LEDs, used in overhead gantry signs giving traffic information.

The requirements for the new adhesive included being able to:

  • Bond LEDs to polycarbonate
  • Operate in service-temperatures -20°C to +80°C.
  • Be applied to overlap/butt joint design
  • Require minimal surface preparation

The Solution

Adhesive experts worked with the company to determine Huntsman Araldite 2028-1 as the ideal bonding solution in this case.

Araldite 2028-1 is a cold/fast-curing polyurethane adhesive that is UV stable and suitable for the bonding of LED road signs. It is transparent and provides high shear and peel strength when bonding glass and metal applications.

The Benefits

As a result of using Araldite 2028-1, the LED bonding application benefited in various ways, including:

  • Rapid cures
  • Good optical clarity
  • Good environmental resistance
  • Ease of use


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