Welding process and geosynthetic products thereof

Details Welding process and geosynthetic products thereof Welding process and geosynthetic products thereof

2007-03-01

2008-12-09

Sells, James (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S064000

Reexamination Certificate

active

07462254

ABSTRACT:
An ultrasonic welding method which requires no external pressure during the welding step is disclosed. 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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International Search Report.

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