The tearing degree of the paper depends on the fiber length and the fiber wall thickness. The fibers with the fiber wall thickness can only form paper sheets with high bulk and rough surface under the current conditions of thick beating, and it is difficult to improve the bursting strength and tensile strength of the paper. Quality indicators such as strength and folding resistance.

The headbox is a key part of a modern paper machine. Its function is to ensure that the paper material is evenly and stably connected to the Internet along the full width of the paper machine, and to ensure proper flow and flow rate, so as to form a uniform wet paper sheet on the Internet. creating condition. The structure and properties of the flow stock are decisive for sheet formation and paper quality.

The development status and future development trend of papermaking machinery in recent years have shown rapid growth, which has caused overcapacity to a certain extent, and the industry has encountered greater difficulties. Facts show that the extensive development mode has come to an end, and realizing the strategic transformation of the paper industry is an inevitable requirement for the industry to develop to the current stage. Therefore, adjusting the structure of the paper industry and realizing industry revitalization in the process of adjustment will be a necessary factor for the survival of enterprises in the harsh environment of the financial crisis.

Generally speaking, paper machine downtime failures are divided into two categories. One is the production inherent failure downtime, and the other is the paper machine equipment downtime.The main reasons for the inherent shutdown of production are: in the process of using the wet end water filtrati

The dryness of the wet paper out of the press section is generally only 30%~40%. In the new paper machine with compound press, the dryness is only 40%~50%. Therefore, it is necessary to use the drying cylinder to evaporate the water to make the paper dry. increased to 92%~95%.

The paper machine is a complete set of equipment that makes the pulp form the paper web, including the headbox, wire section, press section, drying section, calender, paper reel, as well as the main engine such as the transmission section and steam, water, vacuum , lubrication, heat recovery and oth