APPARATUS TO EXPAND A LAMINATING INTERLAYER

摘要

APPARATUS TO EXPAND A LAMINATING INTERLAYER An apparatus for expanding a laminating interlayer is taught. The apparatus includes structure for stretching a heated web of laminating interlayer material between a cylindrical heating structure and a conical member in such a manner that a constant rectangular plane is defined in the space between the point at which the web leaves the cylindrical structure and the point at which it contacts the conical member. The stretching of the web occurs between these two points because the web engaging the larger end of the conical member is stretched to a greater degree than the portion of the web engaging the smaller end of the conical member as the different ends of the conical member are moving at different surface speeds. The web is cooled on the conical member.