This invention relates to fastening sheets of deformable material together and more particularly to clinch joints and methods and apparatus for forming clinch joints of {HEAD ~ both the leak proof} and {TAIL ~ lanced type joints} 
This invention relates to fastening sheets of deformable material together and more particularly to clinch joints and methods and apparatus for forming clinch joints of { HEAD ~ both the leak proof } and { TAIL ~ lanced type joints }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL