What are the key components of BOPP thermal sensitive synthetic paper?

The key components of BOPP (biaxially oriented polypropylene) thermosensitive synthetic paper mainly include the following:

1、 Base material

High molecular weight polypropylene: This is the main substrate for BOPP thermosensitive synthetic paper. The use of high molecular weight polypropylene can significantly improve the tensile strength, impact strength, and toughness of paper, making it more durable and reliable.

2、 Functional fillers and additives

Functional fillers: such as pigments, dyes, etc., used to give paper specific colors and functional properties. These fillers can ensure that BOPP thermosensitive synthetic paper can present clear and vivid images and text during printing.

Additives: including antioxidants, lubricants, fluorescent whitening agents, titanium dioxide, etc. These additives can improve the processability of paper and the performance of the final product, such as improving wear resistance, anti-aging, etc.

3、 Thermal sensitive coating material

Hidden dye: This is one of the key components in thermal sensitive coatings. At room temperature, cryptochromes are colorless, but when exposed to a heat source, they undergo a chemical reaction under the catalytic action of a color developing agent, resulting in the appearance of color. This characteristic enables BOPP thermal sensitive synthetic paper to quickly print the desired image or text when heated.

Chromogenic agent: Chromogenic agents play a catalytic role in thermosensitive reactions and participate in color development reactions together with latent dyes. It helps the hidden dye undergo structural changes when heated, thereby revealing its color.

4、 Other special coatings

Waterproof and oil resistant coating: The waterproof and oil resistant coating applied to the surface of BOPP thermal synthetic paper can significantly improve its water resistance and oil resistance, making it suitable for applications that require high protective performance.

Antibacterial coating: This coating material can effectively inhibit the growth and reproduction of microorganisms such as bacteria and mold, and improve the hygiene performance of the product. With the increasing emphasis on hygiene and health, the application of antibacterial coatings in BOPP thermal synthetic paper is becoming more and more widespread.

5、 Other possible components

Modified polypropylene: By adding appropriate toughening agents, nucleating agents and other modifiers to modify polypropylene, its processing performance and physical properties of the final product can be improved.

Bio based additives: Additives made from bio based raw materials such as starch, cellulose, etc. can reduce dependence on fossil resources and lower carbon emissions during the production process.

Halogen free flame retardants: In order to improve the environmental performance of products, halogen-free flame retardants can be used instead of traditional halogenated flame retardants.

In summary, the key components of BOPP thermosensitive synthetic paper include high molecular weight polypropylene substrate, functional fillers and additives, thermosensitive coating materials (hidden dyes and color developing agents), other special coatings (such as waterproof and oil resistant coatings and antibacterial coatings), as well as possible modified polypropylene, bio based additives, and halogen-free flame retardants. These components together constitute the excellent performance and diverse applications of BOPP thermosensitive synthetic paper.