Thin films adhesive-bond-strength measurement

For example, polyethylene terephthalate (PET) plastic can be bonded with many different types of adhesives, including cyanoacrylates, UV acrylics and epoxies, and good strengths can be obtained on standard lap shear parts (1.6 mm thick). However, if thin films (<0.75 mm thick) of PET are to be bonded then it will be much easier to subject the adhesive to a peel load and the measured strength of the adhesive on the same grade of PET will be considerably lower. 

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