The paper machine is a complete set of equipment that links the pulp to the paper web, including the headbox, wire section, press section, drying section, calender, paper reel, and transmission section, as well as steam, water, vacuum , Lubrication, heat recovery and other auxiliary systems. The wire part forming the wet paper web is the core of the paper machine, so the paper machine can be divided into a long wire paper machine, a wire mesh paper machine and a round wire paper machine according to the structure of the wire part.
The headbox is a device that uniformly and stably sends the slurry of appropriate concentration to the net through the pulp distributor, rectifier, weir pool, weir plate nozzle and other components, also known as the net front box; the slurry is sprayed from the headbox to the copper After the web, the wet paper sheet is formed on the wire section and dehydrated; after that, pressing, that is, mechanically squeezing out the moisture of the wet paper sheet from the net section, improving the dryness of the paper sheet and improving the surface properties of the paper , Eliminate the net marks and increase smoothness, tightness and strength; Then enter the drying section to further dehydrate the wet paper sheet after pressing, shrink the paper sheet, tightly bond the fibers and increase the strength.
After the paper sheet from the drying section is calendered by the calender, the smoothness, glossiness and tightness of the paper sheet can be improved, the thickness of the whole sheet of paper can be uniform, and the air permeability can be reduced; finally, the paper roll Rolling into a paper roll completes the main process of papermaking. In order to adapt to different needs in the future, a super calender, rewinder, paper cutter, etc. are also installed behind the paper roll in the paper workshop.
