Abstract: A nozzle for applying a liquid adhesive to a web moving continuously in a travel direction has a body having a passage forming an outlet opening generally transversely to the direction immediately adjacent the moving web at a face of the body so that the liquid adhesive flows through the passage and out the outlet end onto the moving web. Structure on the face of the body forms immediately upstream of the outlet a porous region. Air is fed through the structure and out of the face to form between the region and the web an air cushion.

Abstract: To clean a pair of counterrotating stretch rollers having surface formations that interengage and that stretch a laminate web transversely to a travel direction in which the web passes between the interengaging rollers gas streams carrying dry-ice particles are directed at surfaces of the counterrotating rollers such that the particles free contaminants from surfaces of the rollers. The freed contaminants and dry-ice particles are aspirated from immediately adjacent each of the rollers while the rollers are rotating and, in fact while the production operation of the web is taking place.

Abstract: A nozzle for applying a liquid adhesive to a web moving continuously in a travel direction has a body having a passage forming an outlet opening generally transversely to the direction immediately adjacent the moving web at a face of the body so that the liquid adhesive flows through the passage and out the outlet end onto the moving web. Structure on the face of the body forms immediately upstream of the outlet a porous region. Air is fed through the structure and out of the face to form between the region and the web an air cushion.