Abstract: A web of paper or similar material is subjected to at least one nip formed by an iron roll and a compliant roll. The iron roll is heated to a temperature of at least the temperature at which the fibers in the web begin to deform. In the case of paper this is approximately 350.degree. F. Preferably the web is passed through two nips the first nip polishing one side of the web, the second nip polishing the other side. The result is a web having improved gloss without substantial loss of bulk and with minimum mottling.

Abstract: A positioning mechanism for four column calender machines is disclosed. The mechanism employs an interconnected piston and cylinder arrangement to permit the rolls to be quickly separated and subsequently automatically repositioned. The rolls are supported on a plate assembly movable on a vertically disposed way mounted on the columns. A lost motion arrangement is provided in the plate assembly so that when a paper break occurs or when it is otherwise desired to separate the rolls quickly, the cylinders are released permitting rapid relative movement between the rolls to prevent damage.

Abstract: The invention comprises a method and apparatus for accurately calendering a web of material, such as paper. Zone control rolls of variable geometric profile are provided for a super calender at the top and bottom nips. The upper zone control roll has its geometric profile along the nip altered as a function of web caliper. The bottom zone control roll has its geometric profile altered as a function of temperature measured at the bottom compliant roll of the super calender.

Abstract: A portable core shaft puller includes a saddle for engaging the shaft and a clamp for locking the associated core during insertion or withdrawal of the shaft, an air motor for lateral displacement of the shaft and for positioning the core shaft puller relative to the shaft.

Abstract: A positioning mechanism for calender machines is disclosed. The mechanism employs an interconnected piston and cylinder arrangement whereby the rolls may be separated quickly and subsequently automatically repositioned. When a paper break occurs or when it is otherwise desired to separate the rolls quickly, the cylinders, by means of a lost motion connection, quickly separate the rolls by a specified amount to prevent damage to the apparatus. A hydraulic circuit maintains the spacing required for the lost motion connection and allows for interchanging of rolls of different diameters.