Representative Papermaking Machines The fibers of subsequent layers do not intermingle, and therefore the bond between the layers is weak. The dry end is similar to that of the fourdrinier machine. Cylinder machines do not have the fourdrinier machine's limitation on the number of stations, and six-or seven-station machines are common. Higher-caliper boards for folding and setup cartons are usually cylinder boards. Generally, papers are made on fourdrinier or twin-wire formers, whereas heavier paperboard products are made on cylinder-type machines. Extremely heavy boards are made by laminating several thinner sheets. A typical cylinder board construction (Figure 3.5):Representative Papermaking Machines The fibers of subsequent layers do not intermingle, and therefore the bond between the layers is weak. The dry end is similar to that of the fourdrinier machine. Cylinder machines do not have the fourdrinier machine's limitation on the number of stations, and six-or seven-station machines are common. Higher-caliper boards for folding and setup cartons are usually cylinder boards. Generally, papers are made on fourdrinier or twin-wire formers, whereas heavier paperboard products are made on cylinder-type machines. Extremely heavy boards are made by laminating several thinner sheets. A typical cylinder board construction (Figure 3.5):