Dissemination of IT for the Promotion of Materials Science (DoITPoMS)

DoITPoMS Micrograph Library Full Record for Micrograph 625

Full Record for Micrograph 625

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Micrograph no
625
Brief description
Series of laser welds in amorphous PET
Keywords
laser, laser-weld, polyethylene (PE), polyethylene terephthalate (PET), polymer Link to MATTER Glossary entry for polymer, weld
Categories
Polymer
System
Polyethylene terephthalate (PET)
Composition
Amorphous polyethylene terephthalate (APET)
Standard codes
Reaction
Processing
Applications
Laser welding is a rapid, sterile, technique for joining polymers. It is, however, restricted to lap joints and to certain polymer types.
Sample preparation
Technique
Cross-polarised light microscopy
Length bar
12 mm
Further information
A 900 Watt IR laser (940nm wavelength) with a beam spread of 10mm was used to form lap joints between 0.5mm thick sheets of amorphous polyethylene terephthalate (APET). Different raster rates have been used: 5, 10, 25, 40 and 60 m/min from top to bottom.
Contributor
J A Curran
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
03/10/02
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales