Abstract: A textile web corrugating machine comprises a support table along which a textile web is transported, a folding plate disposed above the support table for folding in a generally zig-zag fashion the textile web then as it passed below the folding plate, a retainer member positioned above the support table in face-to-face relationship with the folding means for urging folds successively formed on the textile web into a web transport passage positioned downstream of the support table with respect to the direction of transport of the textile web, and a compressing unit disposed along the web transport passage for applying a compressive force to the successively formed folds from above and also from a lateral direction.