What is kraft paper? What kinds are there?

Kraft paper is a commonly used packaging material, with durability, strength and toughness characteristics, usually used to protect goods. According to the manufacturing process, color, use and material, kraft paper has a variety of classifications. It has the characteristics of environmental protection, safety and good moisture resistance, and is widely used in the packaging industry. With the improvement of environmental awareness, green and environmentally friendly kraft paper will have a wider application prospect.

Definition of kraft paper

Kraft paper is a commonly used packaging material, because of its appearance and cowhide similar to the name. It is a kind of tough, durable paper, usually used for packaging goods to protect goods from the impact of the external environment. The color of kraft paper is usually tan or brown, which has natural and environmental protection characteristics, so it is widely used in the packaging industry.

Two, the types of kraft paper

1. Classification by manufacturing process: kraft paper can be divided into sulfuric acid characteristics and coniferous wood pulp characteristics according to the manufacturing process. Sulfuric acid characteristics of kraft paper using sulfate coniferous wood pulp as raw materials, with high compressive strength and moisture resistance, but the surface is not smooth, generally used to make transport boxes and packaging bags. The kraft paper with the characteristics of coniferous wood pulp has a smooth surface, fine paper, high strength and toughness, and is a commonly used material for making bags and handbags.

2. Classification by color: Kraft paper is usually tan or brown, but there are also other color classifications. For example, white kraft paper is mainly used to make food packaging, and green kraft paper has environmental protection characteristics and is used to package environmentally friendly products. In addition, there is black kraft paper, which is often used to make the inner packaging of gift boxes.

3. Classification by use: kraft paper is mainly used in the packaging industry, but according to different uses, it can be divided into different types. For example, machine-specific kraft paper suitable for wrapping machine parts; Silent kraft paper that is suitable for wrapping the machine without making noise when the machine vibrates; Food grade kraft paper for food packaging.

4. Classification by material: According to the different materials used, kraft paper can be divided into pure kraft paper and added materials kraft paper. Pure kraft paper is made of wood fiber and sulfate, with high compressive strength and moisture resistance. The addition of material kraft paper is to add a certain amount of other materials on pure kraft paper, such as plant fibers, starch, etc., to improve its toughness and moisture-proof performance.

Three, the characteristics of kraft paper

The characteristics of kraft paper include: tough texture, good durability, good moisture resistance, environmental protection and safety. In addition, different types of kraft paper also have different characteristics, such as smoothness, color, strength and toughness. These characteristics make kraft paper widely used in the packaging industry.

Iv. Summary

In summary, kraft paper is a commonly used packaging material, with the advantages of durability, strength and toughness. It can be divided into many types according to the manufacturing process, color, use and material, each type has different characteristics and scope of application. In the packaging industry, kraft paper is widely used because of its environmental protection, safety, moisture resistance and other characteristics. With the improvement of environmental awareness, green and environmentally friendly kraft paper will have a wider application prospect.