High shear strength clay liner, method and apparatus for its pro

Details High shear strength clay liner, method and apparatus for its pro High shear strength clay liner, method and apparatus for its pro

1998-10-22

1999-10-26

Nerbun, Peter

Sewing

Special machines

Mattress sewing

112 8041, 112166, 112452, D05B 2300

Patent

active

059708930

ABSTRACT:
Apparatus for forming a high shear strength clay liner comprising two synthetic geotextiles surrounding a semihydrated layer of swellable clay. The apparatus includes two parallel needle bars each carrying a row of needles reciprocating in opposed directions and cooperating with a reciprocating needle plate having a plurality of parallel fingers and a looper bar with a plurality of parallel looper plates rocking on an axis to form loops which can be melted to form protruding knots.

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