Kraft Paper: The Preferred Packaging Box Material
Kraft Paper: The Preferred Packaging Box Material
Introduction to Kraft Paper
Kraft paper, used as a packaging material, is known for its high strength. It is typically brownish-yellow in color. Semi-bleached or fully bleached kraft paper pulp appears light brown, cream, or white. It has a basis weight of 80-120g/m², with a breaking length generally exceeding 6000m. Kraft paper exhibits high tear resistance, bursting strength, and dynamic strength. It is mostly available in rolls but also comes in sheets. Made from sulfate softwood pulp, it is processed through beating and then formed on a Fourdrinier paper machine. It is commonly used for cement bags, envelopes, sealing paper, asphalt paper, cable protection paper, insulation paper, and more.
Features
Kraft paper is a tough, water-resistant packaging paper with a brownish-yellow appearance and a wide range of applications. It is frequently used to make paper bags, envelopes, notebooks, record sleeves, files, and sandpaper. The basis weight ranges from 80g/m² to 120g/m², available in both roll and sheet forms. It also comes in variations such as single-sided glossy, double-sided glossy, and striped textures. The key quality requirements for kraft paper include flexibility, durability, high burst resistance, and the ability to withstand significant tensile and compressive forces without breaking. Kraft paper is highly tensile and comes in different types, including single-gloss, double-gloss, striped, and unpatterned. It is mainly used for packaging, envelopes, paper bags, and as a lining material for printing machine rollers.
Specifications
Sheet Paper Specifications: The dimensions depend on the cutting machines used. Standard roll slitting machines can cut widths from a minimum of 460mm to a maximum of 1460mm. Further cutting machines can produce any desired size.
Common printing specifications:
- Standard: 787 × 1092mm
- Large: 889 × 1194mm
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