Fitting the adhesive to the panel surface
The bonding surface must be clean and dry to ensure maximum adhesion. Firm pressure to application ensures better adhesive contact and improves bond strength. It takes around 72 hours for the panel to cure fully. The way the bonding strength is applied can affect the overall end application; our engineers can advise if you are unsure of the best application methods.
Other areas that need to be considered as well as the environmental elements, are the thickness of the panel. Ensuring, the correct strength adhesive is used to keep the panel in place.
Additional Adhesive Layers
As mentioned above, additional adhesive layers can be added within the switch assembly, dependent on the type of switch designed.
Graphic Adhesive Layer – Facilitates the assembly of the graphic overlay to the circuit layers. These are usually made from polyester with adhesive on both sides.
Adhesive Separator Layer – An optional layer to assist any additional circuitry requirements.
Rear Adhesive Layer – The mounting surface layer bonds the membrane switch assembly to the product or the rigid support panel, so it must be durable enough to withstand the external environment.