Abstract: A zig-zag folding apparatus includes a slitter blade which forms one or more longitudinally extending slits completely through a comparatively wide web of paper thus forming two or more individual, narrower sections of paper. A spreader device, located downstream from the slitter blade, is effective to produce a longitudinally extending gap or space between the individual paper sections where the slits were formed, and these separated paper sections are each transferred to an individual folding mechanism to form individual stacks of zig-zag folded sheets.

Abstract: A method and apparatus for forming and dispensing a coating material formulation or solution containing a liquid coating composition and a fluid diluent such as a supercritical fluid comprises a supply for the liquid coating composition, a supply for the fluid diluent, a mixer for combining the two components to form the coating material solution or formulation, and a control system for monitoring a parameter of the formulation which can be correlated to the fluid diluent content and/or liquid coating composition content of the formulation, and for monitoring the pressure of the formulation at selected locations within the system.