What are the raw materials for BOPP synthetic label paper?

The raw materials for BOPP (biaxially oriented polypropylene) synthetic label paper mainly include the following:

1、 Main raw material: polypropylene resin

Function: Polypropylene resin is the basic material for BOPP synthetic label paper, which determines the basic physical and chemical properties of the label paper.

Features: Polypropylene resin has the characteristics of light weight, high strength, corrosion resistance, and easy processing, making it very suitable for making label paper.

2、 Auxiliary materials

In the production process of BOPP synthetic label paper, in addition to polypropylene resin as the main raw material, some auxiliary materials are also used to improve the performance of the label paper or meet specific application requirements. These auxiliary materials may include:

Additives: used to improve the processability of polypropylene resin, improve the weatherability and anti-aging of label paper. Common additives include antioxidants, light stabilizers, heat stabilizers, etc.

Pigments or dyes: used to give specific colors or patterns to BOPP synthetic label paper. These pigments or dyes should have good dispersibility and stability to ensure the printing effect and color durability of label paper.

Adhesive: used to stick label paper onto the object being pasted. The selection of adhesive should be determined based on the material of the object being pasted, the usage environment, and the requirements for pasting the label paper. Common adhesives include water-based adhesives, hot melt adhesives, etc.

Bottom paper: In BOPP adhesive labels, the bottom paper is used to support and protect the label paper, and is easy to tear off during use. The material and thickness of the backing paper should be selected based on the application requirements and cost budget of the label paper.

3、 Special functional materials (optional)

In order to meet specific application requirements, BOPP synthetic label paper may also add some special functional materials, such as:

Antistatic agent: used to improve the anti-static performance of label paper and prevent problems such as dust collection and electric shock caused by static electricity accumulation.

UV resistant agent: used to improve the light aging resistance of label paper and extend its service life.

Flame retardant: used to improve the flame retardant performance of label paper and meet safety requirements in specific situations.

In summary, the raw materials for BOPP synthetic label paper mainly include polypropylene resin, additives, pigments or dyes, adhesives, and base paper. In addition, according to specific application requirements, some special functional materials may also be added. The selection and ratio of these raw materials will directly affect the performance and application range of BOPP synthetic label paper.