What material is BOPP color thermosensitive synthetic paper made of?

BOPP color thermosensitive synthetic paper is made of various materials through specific processes, and the following are its main constituent materials:

1、 Base material

BOPP film: This is the support layer of BOPP color thermal sensitive synthetic paper, namely biaxially oriented polypropylene film. BOPP film has high tensile strength, impact strength, rigidity, toughness, and good transparency, making it an ideal substrate choice. After undergoing biaxial stretching process, the molecular chain arrangement of BOPP film is more orderly, thereby improving the physical properties and chemical stability of the material.

2、 Functional materials

Thermal sensitive materials: This is a key part of achieving thermal printing, containing chemical substances with thermal agents, usually in the form of microcapsules or dyes. When the thermal print head applies heat to the paper, the thermal agent quickly undergoes a chemical reaction, causing a color change and forming a colored image or text on the paper.

Pigments and dyes: used as functional fillers to impart specific colors and functional properties to paper.

3、 Additives

Antioxidants: Used to improve the antioxidant properties of materials and extend their service life.

Lubricant: Helps improve the processing performance of materials, reduce friction and resistance during the production process.

Fluorescent whitening agent: used to enhance the whiteness and brightness of paper, and improve visual effects.

Titanium dioxide: As a white pigment, it is used to improve the covering power and whiteness of paper.

4、 Coating material

Thermal sensitive coating: applied on the surface of BOPP film, it is a key layer for achieving thermal sensitive printing.

Bottom coating: used to improve the adhesion between thermal sensitive coating and BOPP film.

Protective layer: used to protect the thermal sensitive coating from external environmental erosion and improve the durability of the paper.

In addition, with the advancement of technology and the continuous changes in market demand, some new materials have also been applied in the production of BOPP color thermosensitive synthetic paper, such as high molecular weight polypropylene, modified polypropylene, bio based additives, halogen-free flame retardants, waterproof and oil proof coatings, antibacterial coatings, and nanomaterials. The application of these new materials further improves the performance and application range of BOPP color thermosensitive synthetic paper.

In summary, BOPP color thermosensitive synthetic paper is a special paper made from BOPP film substrate, thermosensitive material, functional fillers, additives, and various coating materials through specific processes.