There are three pulping methods in the pulping process flow: chemical pulping, mechanical pulping, and high-temperature and high-pressure pulping technology. High-temperature and High-pressure Pulping Technology (CTMP)High-temperature and high-pressure pulping technology (CTMP) is an efficient mechanical pulping process. Through the combined action of high temperature, high pressure and chemicals, wood is crushed into fibers, which are then mixed with chemicals to make them suitable for the papermaking industry. The CTMP process flow includes steps such as log pretreatment, cutting, crushing and mixing. Characterized by high efficiency and environmental friendliness, the CTMP process can produce fiberboards with uniform texture and a small amount of wood chips, significantly improving the surface quality and mechanical properties of paper. Chemical PulpingChemical pulping achieves the separation of cellulose from non-cellulosic components such as lignin in wood by using chemical agents, thereby obtaining pure

The cylinder mould paper machine is a common type of papermaking equipment, and its basic structure consists of the following parts: Pulp Supply System: It is responsible for feeding pulp into the headbox of the paper machine, usually conveying the pulp to the next stage via pumps or other conveying devices. Drying Section: Located right after the pressing section, this part is generally composed of multiple layers of drying cylinders. The drying cylinders evaporate the moisture in the pulp through hot air or other heating methods, gradually turning the pulp into paper sheets. Winding Section: The dried paper sheets are wound into paper rolls here, which is typically made up of winding cylinders and a winding device. The winding cylinders rotate to wind up the paper, while the winding device positions and secures the paper roll. In addition, the cylinder mould paper machine is equipped with some auxiliary equipment, such as paper cutters and paper quality inspection devices, which are used for further process

Toilet Paper Production Process 1.Pulp Preparation: Put broke paper, newspaper or waste paper into a single-disc hydraulic pulper, add white water to the full liquid level. Pump the pulp to a centrifugal desander via a pulp-extracting pump, and remove sand particles entrained in the pulp under the action of centrifugal force. 2.Pulp Refining: Convey the prepared pulp to a double-disc refiner for further refinement. 3.Pulp Conveying: The refined pulp is delivered to an elevated headbox by a stock pump. The lower part of the elevated headbox is equipped with an outlet connected to a fan pump. A screen filter is installed at the outlet of the fan pump. After being pumped by the fan pump, the pulp is filtered for the last time through the screen filter and then sent to a pressurized headbox. 4.Sheet Forming: The pulp forms turbulence in the pressurized headbox, is ejected in a thin film from the headbox lip, and enters a vacuum drum former. The paper sheet is formed through the suction of the vacuum drum former.

Modern papermaking is one of the four great inventions of China. With the continuous progress and development of science and technology, papermaking technology has been constantly upgraded and gradually moved towards scientific and modernization. How do modern paper mills produce paper? What is the papermaking process? The modern papermaking process can be mainly divided into the following steps: raw materials - cooking - washing - pulping - blending - papermaking - paper storage. 1. Raw materials: The raw materials for papermaking are mainly waste paper, wood, rice straw, bagasse, bamboo, etc. 2. Cooking: Cooking refers to the process of steaming the raw materials under certain pressure, temperature and humidity for one hour, allowing the chemical solution to fully penetrate the raw materials and decompose them. (In pressure vessels, cooking assistants and chelating agents are generally added to reduce the cooking time). 3. Washing: It involves washing the pulp with water, constantly repeating the cycle of