LENGTHWISE WEB CORRUGATOR

摘要

A method and apparatus for forming machine direction flutes within a continuous web is disclosed. The apparatus includes a first forming curve (34) in a first plane (30) including engagement points which deform the web (16). The first forming curve includes alternating ridges and grooves (22). A second forming curve (32) in a second plane (28) includes engagement points which deform the web. The second plane is disposed parallel to the first plane. Each of the engagement points of the second forming curve is associated with one of the engagement points of the first forming curve. The distance of the path of travel for each point is substantially equal to the distance of each path of travel for the adjacent point. The paths of travel converge in a direction from the second forming curve toward the first forming curve to define a three-dimensional forming surface (11) which forms the web into three dimensions.