Surface Laser Micropatterning of Polyethylene Terephthalate (PET) to Increase the Shearing Strength of Adhesive Joints

Abstract. The method for increasing the shearing strength of adhesive joints in plastics was investigated. This uses laser micropatterning different construction materials to extend surfaces. In investigations, Polyethylene Terephthalate (PET) used. TruMicro 5325c ultra-short pulse (picosecond pulse) and SCANLAB GALVO scanning head applied research enable ablative removal material without heat-affected zone (HAZ) rest it. Ultra-short pulses (such as picosecond pulses) remove melting presented significantly increases formed investigated made from plastics, which proved results laboratory tests. device parameters used, are described this article, have not produced cracks microtreated materials. shows that bondings between elements with appropriately machined microstructure characterized by a severalfold increase relation devoid microstructure. addition, study addresses practical solutions used joining polymers could be helpful each application where we connect these types polymers.