Variable high pressure vibration welding process
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United States of America Patent
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Jun 5, 2001
Grant Date -
N/A
app pub date -
Oct 17, 1994
filing date -
Oct 17, 1994
priority date (Note) -
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Abstract
The practice of joining two thermoplastic resin bodies with widely disparate melting temperatures is enhanced by providing a shallow, roughened surface on at least the higher melting point body. When the parts are clamped together for frictional engagement, the roughened surface increases the local pressure, accelerates the formation of a molten film between the bodies and provides a strengthening mechanical interlock in the welded joint.
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