Patent ID: 8746660

Claim:
A structured packing comprising a first layer having a plurality of first corrugations forming a plurality of open channels therebetween, each said channel including a first corrugation valley having a valley bottom, a first corrugation peak having a first apex and a second corrugation peak having a second apex, wherein said first corrugation peak and said second corrugation peak bound said first corrugation valley; an indentation formed on said first apex of said first corrugation peak and extending in the direction of said first apex, at least one point of said indentation being spaced from said valley bottom of said corrugation valley a distance smaller than the spacing of said first apex from said first valley bottom of said first corrugation valley; and a second layer having a plurality of second corrugations forming a plurality of open channels therebetween, said second layer being disposed in contact with said first layer with said open channels of said first layer crossing said open channels of said second layer characterized in that said contact is interrupted in said indentation.