Did you know that paper folding endurance is a real thing? It’s actually a measure of how long a piece of paper can be folded before it breaks. In this article, we will discuss what folding endurance is, and why it matters. We’ll also take a look at some of the most common folding endurance … Read more
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
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
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
What is the tensile strength of paper? The tensile strength is the maximum stress to break a strip of paper sheet. It is one of the most important basic physical properties of paper and paperboard. The tensile strength is different basis on fiber direction. Since the fiber orientation is dissimilar between machine direction (MD) and … Read more
What is the tear strength of paper? The tear strength of paper means the resistance of a paper sheet to tearing force that it is subjected to. It is another important basic physical property of paper and paperboard. It is measured in both machine direction (MD) & cross direction (CD) and expressed as mN (mili … Read more
The caliper or thickness is one of the important basic physical properties of paper and paperboard. It is depends on refined stock, category of fiber, dryer temperature, load on press section and calendars, moister content, filler etc for a given basis weight. Thickness is related to bulk or dense of paper. Uniform caliper or thickness … Read more
The basis weight or grammage is basic physical property of paper and paperboard. The Basis weight of paper is calculating by the weight per unit area. It is mainly expressed as GSM (grams per square meter) and pounds per ream (500 sheets) of a specific size. It is also expressed in kg/m2, pounds per 1000 … Read more