What are the main raw materials for making BOPP colored thermal sensitive synthetic paper?

The main raw materials for producing BOPP color thermal sensitive synthetic paper include the following categories:

1、 Polypropylene (PP) resin

Role: Polypropylene resin is the main component of BOPP color thermosensitive synthetic paper, especially isotactic polypropylene, whose content usually needs to reach a high standard (such as 95%~97%) to ensure the tensile strength and physical properties of the film.

Characteristics: Polypropylene resin has the advantages of light weight, non toxicity, odorlessness, moisture resistance, etc. After processing, it can endow BOPP colored thermosensitive synthetic paper with superior mechanical strength, airtightness, and barrier properties.

2、 Functional fillers

Role: Add functional fillers such as pigments, dyes, etc. as needed to give paper specific colors and functional characteristics.

Characteristics: These fillers can affect the final appearance and performance of BOPP colored thermosensitive synthetic paper, such as color vividness, light resistance, weather resistance, etc.

3、 Additives

Role: Additives include antioxidants, lubricants, fluorescent whitening agents, titanium dioxide, etc., to improve the processing performance of paper and the performance of the final product.

Characteristics: Antioxidants help prevent oxidative degradation of materials during processing and use; Lubricants help improve the processing fluidity and surface gloss of materials; Fluorescent whitening agents can improve the whiteness and brightness of paper; Titanium dioxide is a commonly used white pigment used to improve the covering power and whiteness of paper.

4、 Thermal sensitive coating material

Composition: The thermosensitive coating is mainly composed of water-based resin, thermosensitive agent, color developer, and sensitizer.

Characteristics: These materials work together on the surface of BOPP substrate to form a uniform thermosensitive coating. When the coating encounters a heat source, a chemical reaction occurs, causing the latent dye to develop color and print the desired image or text. The sensitivity, stability, and color vividness of thermal sensitive coatings have a significant impact on the printing effect of BOPP color thermal sensitive synthetic paper.

In summary, the main raw materials for producing BOPP colored thermosensitive synthetic paper include polypropylene resin, functional fillers, additives, and thermosensitive coating materials. The selection and ratio of these raw materials will directly affect the performance and quality of the final product.