How good is a bond after Plasma treated parts have been glued, printed, painted?

Plasma modified surfaces form a covalent bond with many adhesives. The resulting bonding enhancement can range from a 2-fold to a 10-fold improvement in lap-shear strength and peel-strength. Some materials can even be bonded in the absence of adhesive, such as PDMS to glass, of particular importance in the production of microfluidic devices.