ABSTRACT Dewatering process and paperboard strength are critical parameters in the production of paperboard. A slow dewatering process can limit production rates and increase energy costs, while low paperboard strength can reduce product quality and application. The objective of this study is to analyze the effect of adding cationic starch dosage on these two parameters. Cationic starch, a com…
ABSTRACT Paper is a sheet structure made from pulp and other materials as additives with specific functions. Paper is available in several grades, some of which are distinguished by weight. Paper weighing >190 g/m2 (grams per square meter) is referred to as paperboard. Paperboard is a thick and strong paper-based material that has 3 layers, commonly used to make products such as packaging, box…
ABSTRACT Paper making is a process of arranging fiber into sheets. During the papermaking process, water is removed from the fiber network, resulting in increasingly tight bonds bween fibers and accompanied by changes in th shape of the fibers to flat. Fiber blending is a paper production technique based on a combination and mixing of different fibers. Compared of using 100% of the same ty…
ABSTRACT Bleached Chemi-ThermoMechanical Pulp (BCTMP) is widely used in the paper industry due to its lower production costs. This study aims to determine the effect of the use of BCTMP on the dose of colourants, especially Optical Brightening Agent (OBA) and dye violet. Data was obtained from PI (Plant Information) and PMIS (Process Management Information System). The results of the analysis …
ABSTRACT Paper is often used as a medium for writing, printing, and various other purposes. In the production process, the quality of paper is greatly influenced by the type of pulp used. One alternative pulp that is increasingly being used is Bleached Chemi Thermo-Mechanical Pulp (BCTMP), a semi-chemical pulp with high bulky properties and lower production costs than kraft pulp. This study ai…
ABSTRACT Abrasion is the process of eroding or reducing material from the surface of an object due to friction with other materials. The abrasive nature of fillers can cause problems during and after the formation of paper sheets. To know the filler material will be abrasive is by looking at the mohs hardness scale. The purpose of this study is to determine the relationship between the che…
ABSTRACT Liquor or called liquid or solution is a solution of sodium chlorate and sodium chloride reacted in the electrolyzer. Strong sodium chlorate from the electrolizer and sodium chloride from the hcl syntesis unit are reacted in the generator to form chlorine dioxide gas, chlorine gas, and salt. The chlorine dioxide gas is absorbed in the absorber by contacting chilled water to produce ch…
ABSTRACT Woodyard is the earliest department in a pulp and paper mill that processes wood into chip pieces using a chipper or commonly referred to as the chipping process. In the chipping process, problems often occur regarding the sharpness of the blade (blade life time). In this final project, an analysis of the effect of Andritz blade life time on chip acceptance and reject fractions from Eu…
ABSTRACK Optical Brightenic Agent (OBA) is a compound that can provide a light effect on an object exposed to light, so that the object will be whiter and more radiant. The utilization of OBA in the paper industry is used as an auxiliary material in achieving the optical properties of paper in accordance with the specified standards. OBA consists of three types, namely disulpho, tetrasulpho, a…
White water system is a system that serves to take back fines and fillers that escape and reduce the need for clean water usage in the paper machine. Save all is a tool to filter and separate solid fractions such as fine fibers and fillers using sweetener stock, namely short fiber or virgin pulp, which functions to capture fiber, fines and chemicals to separate from white water. The purpose of …
The broke system is a system for reprocessing rejected or defective pulp stock that is collected in the broke tower tank. In the broke tower, stock from wet broke and dry broke (pulp rejects) is utilized to the maximum extent possible to minimize industrial waste, so that broke becomes an additional raw material in the production of pulp sheets in the pulp dryer. The objective of this final pro…
ABSTRACT Paperboard is a thick and strong paper-based material that has 3 layers, generally used to make products such as packaging, boxes, and covers. In the process of making paperboard, coating is needed as a coating on the paperboard which will provide attractiveness and durability to the paperboard. Coating is a material used to improve the surface quality of paperboard. Quality improveme…
ABSTRACT Eucalyptus is one of the hardwood tree species commonly used in the pulp and paper industry. Pulp itself is wood pulp that is commonly used as raw material in papermaking, which is a thin material produced from the compression of fibres derived from pulp. There are various factors that affect the characteristics of paper, one of which is the wood harvesting age. In this study, the bul…
ABSTRACT This study aims to determine the effect of adding Gmelina as a chip raw material in a continuous digester on the efficiency of the oxygen delignification stage. The Gmelina ratio variations used range from 0% to 15%, with key parameters analyzed including kappa reduction, brightness, and the consumption of chemicals such as alkali charge and oxygen charge during the oxygen delignifica…
Paper grammature is defined as a measure of the weight of a sheet of paper, where paper weight is measured in grams per square meter (gsm) or g/m2. Grammature plays an important role in determining the characteristics of the paper sheet as well as the cutting quality during the cutting process. This final project aims to determine the effect of grammature on cutting quality on folio sheeter mac…
ABSTRACT Size press is a process to improve the quality of the surface properties of sheets by coating using surface sizing and starch. The amount of starch that sticks to the surface of the paper and penetrates into the paper is called size pick up. In this study, the author analyzes what parameters can affect the size pick up value and its relationship to size pick up, this study was conduct…
ABSTRACT The sizing process is an important stage in paper production that aims to improve the surface quality properties of paper, including water absorption, strength, and water resistance. The main chemicals used in the sizing process are native starch and the applicator rod as a means of applying starch to the sheet. These two things greatly affect the quality of the sheet during productio…
ABSTRACT Folio sheeter Machine is a machine that functions to change paper roll into sheets of folio-sized paper which are then stacked on a pallet. Folio paper products that have been arranged on the pallet can be directly packed for bulk orders or sent to the folio sheeter wrapping machine to be wrapped per ream into a ream wrap order. In the process of cutting folio paper, several defec…
ABSTRACT Pulp Dryer is one of the important business units of pulp and paper companies in pulp production that will produce slush pulp into pulp sheet. The main process in producing slush pulp into pulp sheet is the drying process. The drying process occurs in the dryer, where the dryer will require heat to dry the pulp sheet. Heat recovery system is one of the components in the drying process…
ABSTRACT Forming section is one of the key stages in the papermaking process, where fiber sheets begin to form from a mixture of pulp and water. This stage determines the initial characteristics of the paper sheet, including fiber distribution and Dryness. In the papermaking process, the level of Dryness in the forming section is one of the important parameters that affect process efficiency a…