Sack Kraft paper is manufactured from either bleached softwood kraft or unbleached sulphate pulp having excellent mechanical strength and grammage. It is a porous in nature with excellent durability and tensile strength, and widely used for packaging of goods such as cements, fertilizers, minerals, chemicals (solid), animal feed products and food among others. It is mostly consumed in conversion of multiwall sack bags demanding for high strength and durability. Critical properties such as high tensile energy absorption (TEA) and low air resistance are indispensable in order to manufacture sack from Kraft paper.Sack Kraft paper can be easily recyclable and offers excellent printability, durability and porosity. It can be coated with high density polyethylene (HDPE) films, low density polyethylene (LDPE), jute and other materials which having same elongation properties. Sack Kraft paper is distinguished by elevated elasticity and it can be easily customized depends on end-user requirement. Based on its elasticity, sack kraft papers are commercially available in market which includes natural kraft paper, semi-extensible kraft paper, extensible kraft paper and coated kraft paper.E-Mail: leizhanchina@gmail.com