Glossary of Terms
9-4 Digital Compact
Weld force profiling
The weld quality can be improved by changing the weld force (genera-
ted pneumatically). Usually, the weld cycle starts with a high level of
force. After a pre-defined period of time, a fast proportional valve swit-
ches to lower force: The energy transferred to the joint is decreased,
causing the plastics in the joint area to melt more slowly. This enables
thicker melting layers with a higher level of strength.
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