admin What is the porosity of paper? This may seem like a simple question, but it has a surprisingly complex answer. In this article, we will take a deep dive into the science of ink absorption and explore how porosity affects the way that ink behaves on paper. We will also discuss some of the factors … Read more
Parchment paper is cellulose-based treated or coated paper. Normally it is coated with silicone. The silicone coating makes the paper nonstick, heat-resistant as well as water-resistant. In addition, it helps to regulate temperature and ensure even heating during baking. It is available in bleached (white) or unbleached (brown) form. The parchment paper is an important … Read more
Tracing paper is a semitransparent paper which has a poor opacity and allowing light to pass through. It comes in various thicknesses. The tracing paper is available in the market as paper roll, sheet, or pad. Basically, the pure cellulose fiber is translucent, but normally we look at the paper as white in color because … Read more
Deinking process is the process that eliminating printing ink from recycled fibers to produce deinked pulp. This process can be achieved by a combination of mechanical and chemical action. There are different types of waste paper such as office waste (OW), Old Magazine Papers (OMP), Old newsprint (ONP), telephone directories, catalogs, box-board cuttings, paperboard etc. … Read more
Opacity is an important optical property of paper. The opacity of paper is also known as printing opacity. It is expresses as a percentage. It means as the percentage of visible light that does not transmit through a sheet of paper. The most of the printing papers fall within the range from 80 to 98 … Read more
Dispersing agent is used in paper making process as additive to provide uniform stock by separating fiber or particles and to prevent clumping and setting. It is a polymer compound with high molecular weight. Normally it is white fine granulated powder. Dispersing agent is water soluble and has high viscosity in aqueous solution. It is … Read more
Rhodamine B is a organic compound and it is a basic dye. In paper mill it is used as dye for making pink color paper. The chemical formula of Rhodamine B is C28H31N2O3Cl. The IUPAC name of the compound is [9-(2-carboxyphenyl)-6-(diethylamino)xanthen-3-ylidene]-diethylazanium-chloride. It contains amino, imino and carboxylic group and has a xanthene structure. Physically it … Read more
Bursting strength machine is used to test strength of the different kinds of paper and paperboard. The operating system of the tester is very easy. It is very important and widely used measurement. It is defined as the required minimum amount of hydrostatic pressure to rapture the paper or paperboard (maximum resistance (in kPa) of … Read more
The fibers that are already used for paper manufacturing process are known as secondary fiber or recycled fiber. Different grade of waste paper are the sources of it. Even, dry end broke, cutter and finishing section broke are also included in secondary fiber. This fiber is an important part for paper productions. The wastepaper may … Read more
Wood chipper is used in paper mill to produce chips from pulpwood so that cooking chemicals penetrate the wood quickly, completely and uniformly during manufacturing of chemical pulp or mechanical pulp. The process from pulpwood to chips is known as chipping process. The sizes of the good quality chips can be 5/8 to 5/4 inch … Read more