Brief introduction of paper machine

Paper machine is the general name of a complete set of equipment that makes the pulp form the paper web. It includes the headbox, wire section, press section, drying section, calender, paper reel, and transmission section. , Vacuum, lubrication, heat recovery and other auxiliary systems.

The basic classification of paper machines: It is customary to divide the paper machines into long-wire, cylinder, clamp and fourdrinier-cylinder hybrid models according to the type of paper sheet former used; some are divided into cultural paper and paper machines according to their main product varieties. (Including newsprint), paperboard machines (including packaging paper), toilet paper machines, special paper machines; or thin paper machines, cardboard machines and conventional paper machines according to the thickness of the paper.

In 1798, Frenchman N.L. Robel first proposed the idea of a paper machine and obtained the patent right of the government, but he did not make a machine. After the British S.&H. Fordrinier brothers purchased this patent right, they were handed over to B. Don King to improve the design and trial production. In 1803, they successfully produced the first fourdrinier paper machine capable of making paper. Called the Fordliner paper machine. The cylinder former was invented in 1809 by the British J. Dickinson. In 1820, T.B. Crampton first used fire to heat the iron-plate cylinder drying paper. It was not until 1872 that Jackson invented the steam-heated drying cylinder that uses a siphon to drain the condensed water. In 1828, Han Ding invented the pressure roller. In 1863, the Holyoke Paper Mill invented the five-roll super calender. It took nearly a hundred years to gradually improve the models of rotary screen and Fourdrinier paper machines. All modern paper machines basically fall into the category of these two models.