WELDING PROCESS AND GEOSYNTHETIC PRODUCTS THEREOF
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United States of America Patent
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Issued Date -
Mar 4, 2010
app pub date -
Sep 4, 2008
filing date -
Sep 4, 2008
priority date (Note) -
Abandoned
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Abstract
A cellular confinement system is formed from an ultrasonic welding method which requires no external pressure during the welding step. A plurality of multi-layer strips can be welded such that the weld area is not thinner than the rest of the strip and has good UV protection. The method comprises: stacking a plurality of strips; providing external pressure; removing the external pressure, positioning the ultrasonic welding apparatus so that it places no external pressure on the stack; welding at least two strips; and removing the welding apparatus.
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