Paper processMaking paper from wood pulp เพือ่ release to get out, and then bring the fiber membrane has to be mixed with additives in various ratios to improve paper properties, has met the need for. This is done from the nanam sheet using the paper machine, and then taken to processing available. The production process is divided into 5 stages, sorted by the actual operations within the plant.1. the production of tissue (Pulping).2. preparation of membrane water (Stock Preparation).3. place a sheet of paper (Papermaking)4. adjust the paper properties when sheets (Web Modification.)5. processingPulp production. The primary purpose of producing tissue to separate the fibers out of the other components of the Java heap khuep nu-wood. The production of tissue can be done several ways, either by chemical or mechanical methods, in some cases, may need to be passed, before bleaching. In the production of pulp production process and thus consists of a membrane purification.The processes that produce pulp (Pulping Process). There are several different types of lining up close with the method name, which consists of various styles of energy use: energy, chemical energy, heat and mechanical energy. The production of mechanical pulp (Mechanical Pulping Process), the mechanical energy is used alongside the heat energy to separate the fibers out. By the wood/wood chips are sent into grinders that grind and cut the wood chips, crushed a wooden lining. The membrane is known as grinding or mechanical wood pulp, pulp yield more than 85 percent in the early wood has a relatively coarse fresh hard fibers that were mostly incomplete. There is a lack of, and cut a thon. There is also a group of mixed fibers. The grinding consists in wood fibers to Fuzz (fines), which is caused by the tearing of fibers, fibers (individual fiber) is not very complete, ask for the fiber bundle (bundle of fiber), which consists of several lines, fiber is a bundle of sticks. This type of tissue is taken as raw material in paper making to property by all 3 components are added to the filament fibers, opaque. The fibers which are not complete, and there is still a lot of their trade, located on Lido natok. Bond between the fibers make it low. To reverse the color quickly. This type of tissue, therefore not suitable to make paper that requires high voltage, or for a spot with cheaper rates for publications, such as newspapers or used as a lining layer in cardboard. The production of Chemical pulp (Chemical Pulping Process) to produce tissue by chemical processes, heat and energy phayang in making fibers. By pieces of wood will be sent to boiler membrane (digester) chemicals and heat to each pattern on oxide of silica to the rest of the tissue culture of each chemical is Lai has several names based on the chemicals used in pulp manufacture, such as sulfate. Pulp, soda, and sulfite pulp Chemical pulp, pulp production, about 40 percent are somewhat dark color, soft style. The fibers will be complete. This type of lining has a very high consumption. Because the fiber can be developed within the electric potential to be widely available. Suitable for use in pressure and communication. If such a force is going to be in paper making, packaging, it is not necessary to purify a communication must be purification, before. เยื่อและเศษกระดาษ (Secondary Pulp) ในปัจจุบันเศษกระดาษ (reclaimed and waste paper) นับ ได้ว่าเป็นแหล่งเส้นใยที่สำคัญแหล่งหนึ่ง ได้มีการนำเส้นใยกระดาษที่ใช้แล้วทั้งภายในและภายนอกประเทศมาเป็นวัตถุดิบใน การผลิตกระดาษ เยื่อที่ได้จากเศษกระดาษที่ใช้แล้วเรียกว่า secondary pulp ส่วยเยื่อที่ยังไม่เคยใช้ทำกระดาษเรียกว่า virgin pulp เส้นใยที่ได้จากเศษกระดาษชนิดนี้เรียว่า recycled fiber เนื่อง จากกระดาษที่ผ่านการใช้แล้วมีมากมายหลายประเภท เช่น ถ้าเป็นกระดาษที่ผ่านการพิมพ์ต่าง ๆ ก่อนนำมาทำเป็นเยื่อต้องผ่านกระบวนการเอหมึกออก (deinking) เสียก่อนแล้วจึงนำไปฟอก (bleaching) ให้ ขาว สำหรับนำไปผลิตกระดาษสำหรับพิมพ์ หรือกระดาษชำระ แต่ถ้าจะนำไปผลิตกระดาษเหนียว หรือกระดาษสีน้ำตาลก็ไม่จำเป็นต้องเอาหมึกออก เยื่อจากกระดาษหรือเศษกระดาษที่ได้ส่วนมากจะนำไปเป็นวัตถุดิบในการ ผลิตกระดาษพิมพ์เขียน ทำเป็นเยื่อชั้นในกระดาษแข็ง หรือทำกระดาษชำระเป็นต้นThe pulp bleaching (Bleaching). To purify the tissue as the cause, there are white tissue paper to suit different communication is divided into two ways:How to purify the tissue to eliminate Li on the oxide (removing lignin).How to change the color of the pulp bleaching เพิ่อ hotel on the House does not have membrane chemical colors (bleaching lignin) is using bleaching chemicals react with the Bikini on nalaeo get rid of silica on the oxide. There are several of these recommendations now. In General, it ranges from 3-6 steps (CEH CEDEP CEOP) is the bright white tissue that is approximately 80-95 percent when measured by the Elrepho meter steps for purification is named according to the chemicals used to purify and cleanse process is sorted by alphabet, used like a laundering CEDED.Chemical symbol, call the process of purificationAdvanced C skin service nation Chlorine (chlorination stage.)Sodium hydroxide E step insertion (extraction stage) aixe.Calcium chloride, hypochlorite H stage hypochlorite (the hypochlorite stage).Chlorine dioxide chlorine dioxide stages D (chlorinedioxide stage).Hydrogen peroxide Super oxide P stage (peroxide stage.)O stage Oxygen oxygen (oxygen stage).Ozone ozone (ozone stage), stage ZReuben, A step the Acid (acid stage.)Preparation of water-membrane In preparation of this membrane is water the main objective is to develop the potential of 2 fibers by tissue paper to grinding and improved properties, according to the purpose of use by mixing different types of additives, or according to a defined ratio of this mixture is called the "water culture" or "stock" (stock) membrane that is made of paper of all types must be passed to crush more or less close to the quality of the tissue. Some types of tissue do not need grinding, such as wood pulp grinder and merge. In the preparation of a water membrane contains sections that acts to grind and mix with the sort operation as follows:1. to distribute the fibers so that the tissue distribution (defibering) fibers separated in water.
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