What is the main substrate of BOPP color thermosensitive synthetic paper?

The main substrate of BOPP color thermal synthetic paper is BOPP (biaxially oriented polypropylene) film. The following is a detailed explanation about BOPP color thermal sensitive synthetic paper and its substrate:

1、 Characteristics of BOPP film

Physical properties: BOPP film has high tensile strength, impact strength, rigidity, and toughness, making it an ideal substrate for manufacturing colored thermosensitive synthetic paper.

Chemical stability: BOPP film has good chemical stability and can resist corrosion from various chemicals and environments.

Transparency: BOPP film has good transparency, which enables colored thermal sensitive synthetic paper to present more vivid and clear images during printing.

2、 The production process of BOPP colored thermosensitive synthetic paper

Raw material mixing: Mix polypropylene resin, functional fillers (such as pigments, dyes, etc.), and various additives (such as antioxidants, lubricants, fluorescent whitening agents, etc.) in a certain proportion evenly.

Plasticization and extrusion: The mixed raw materials are fed into an extruder for plasticization and melted into a uniform melt under high temperature and pressure, and then extruded into thick sheets through a die.

Bi directional stretching: Stretching the extruded thick sheet longitudinally and transversely to improve the strength and stability of the film.

Surface treatment: Perform corona treatment or other surface treatments on the stretched film to improve its surface tension and enhance the adhesion of the coating layer.

Coating with thermal sensitive coating: Coating a layer of thermal sensitive coating composed of water-based resin, thermal sensitive agent, color developer, and sensitizer on the surface of a film is a key part of achieving thermal sensitive printing.

Rolling and slitting: Roll the coated film into a uniform large roll and cut it into appropriate sizes according to customer requirements.

Aging treatment and quality inspection: Aging treatment is carried out on the cut film to improve its physical properties and stability, and quality inspection is conducted to ensure that the final product meets relevant standards and customer requirements.

3、 Application of BOPP Color Thermistor Synthetic Paper

BOPP color thermal sensitive synthetic paper combines the excellent performance of BOPP film with the convenience of thermal sensing technology, and is widely used in various occasions that require fast and instant printing, such as labels, bills, receipts, barcode printing paper, etc.

In summary, the main substrate of BOPP color thermosensitive synthetic paper is BOPP film, and its excellent physical properties and chemical stability provide a solid foundation for color thermosensitive synthetic paper.