Manufacturing Process: Kraft paper is produced using the Kraft process (chemical pulping method), in which wood is treated with high-temperature chemicals (such as sodium hydroxide and sodium sulfide) to extract fibers, resulting in a high-strength pulp. This process gives the paper higher strength and toughness.
Appearance: Traditional Kraft paper is typically natural brown, but it can also be bleached white. It has a rough surface with a noticeable texture.
Strength: Kraft paper has high tensile strength, tear resistance, and crush resistance, making it ideal for applications that require durability.
Chemical Properties:
High Strength and Toughness: Due to the unique treatment process, Kraft paper has mechanical strength that makes it more resistant to tearing and stretching compared to standard paper.
Absorbency: Kraft paper has good absorbency, enabling it to absorb liquids to some extent, which makes it advantageous in certain applications, such as food packaging.
Corrosion Resistance: Kraft paper’s chemical composition is stable, and it has good resistance to corrosion, making it able to withstand exposure to certain chemicals and environmental conditions.
Technical Specifications
Features:
Durability: The main characteristic of Kraft paper is its high strength, making it capable of bearing heavy loads and pressure without tearing or breaking.
Eco-friendly: As Kraft paper is typically made from natural wood pulp or recycled paper pulp, and it is fully biodegradable, it is considered an environmentally friendly material, aligning with sustainable development requirements.
Natural Color: Kraft paper retains its natural brown or raw paper color, which gives it a unique rustic and organic feel, making it popular for packaging products that emphasize eco-friendliness and sustainability.
Customizability: Kraft paper can be customized in terms of thickness, texture, density, and color to meet different industrial and commercial needs.
Safety and Precautions:
Non-Toxic: Kraft paper itself is non-toxic and safe, making it suitable for use in food packaging and everyday products.
Storage Conditions: Kraft paper should be stored in a dry, cool, and well-ventilated area to avoid moisture exposure or direct sunlight, which could damage the paper.
Application Cases
Main Applications:
Packaging Industry:
Kraft paper is widely used in the packaging industry to produce paper bags, boxes, packaging cartons, wrapping paper, and other packaging materials. Its high strength and durability make it especially suitable for packaging in industries like food, chemicals, construction, and logistics.
Eco-friendly Packaging: As Kraft paper is biodegradable, it is widely used in eco-friendly packaging applications, meeting modern sustainable packaging needs.
Printing Industry:
Kraft paper is also used in the printing industry, especially for labels, advertising materials, and book covers. Its rough surface allows for high-quality printing and gives products a natural, eco-friendly look.
Construction Industry:
In the construction industry, Kraft paper is used for producing building paper, such as waterproofing paper and liner boards. These materials protect building surfaces and provide isolation from contaminants.
It can also be used as temporary packaging or protection material on construction sites.
Arts and Crafts:
Due to its natural and rough appearance, Kraft paper is widely used in crafts, particularly in making handmade book covers, gift bags, wrapping paper, and other decorative items.
Food Industry:
Kraft paper is widely used in the food industry, especially for packaging bread, snack foods, fruit and vegetable packaging, and more. It effectively protects food and, due to its natural material properties, meets environmental standards.
Industrial Use:
Kraft paper is used in industrial protection, such as packaging mechanical components, preventing damage during transportation. Its strength and toughness make it suitable for heavy-duty shipping and packaging of large or heavy items.
By focusing on new innovations and sustainability, we aim to empower traders, suppliers, and manufacturers in the packaging industry, helping them achieve success in a competitive market.