What are the key steps in the production process of mixed base carbon belts?

The production process of a mixed-base carbon strip involves several key steps that together determine the final quality and performance of the carbon strip. The following are the main key steps of the mixed base carbon strip production process:

1. Prepare the base membrane

Select the base film: Polyester (PET) film is usually selected as the base film because it has excellent mechanical strength and thermal stability. The choice of base film is crucial to the performance of the final carbon band.

2. Ink production and coating

Ink production: Ink is composed of pigments, resins, waxes and various additives. Pigments are responsible for providing color, and resins and waxes ensure that toner transfers properly and adheres to the medium when heated. Additives are used to improve various physical and chemical properties of toner, such as wear resistance and solvent resistance.

Coating process: In a controlled environment, the ink is evenly coated on the base film. The coating process needs to ensure that the toner layer is uniform to avoid problems such as white spots and streaks when printing.

3. Coating multi-layer structure

Multi-layer structure: the mixed base carbon strip usually has a multi-layer structure, including the release layer, the ink layer, the bonding layer, the protective layer, etc. These layers are coated on the base film in a specific sequence, and each layer has its specific function and role.

Coating sequence: Taking a mixed base heat transfer carbon strip as an example, the coating sequence is the lubricating layer on the back of the base layer, and the front of the base layer is coated with the release layer, the ink layer, the bonding layer and the protective layer. Each coat needs to be dried after application to ensure a firm and even coating.

4. Dry and cure

Drying process: The coated carbon strip undergoes a series of drying processes to remove solvents and solidify the toner. The drying temperature and time need to be adjusted according to the specific composition and thickness of the coating.

Curing treatment: In some cases, it is also necessary to cure the carbon strip to further improve the adhesion and durability of the coating.

5. Cut and wind

Slitting: The carbon strip after drying and curing is slitted according to a specific width to meet the needs of different printers.

Winding: The cut carbon tape is wound onto the drum and packaged and labeled for storage and transportation.

6. Quality control and testing

Quality control: In the entire production process, it is necessary to strictly control the quality of raw materials and finished products, including checking the uniformity, adhesion, wear resistance and other performance indicators of the coating.

Performance test: A series of performance tests are carried out on the finished carbon belt, including wear resistance test, printing effect test, high temperature resistance test, etc., to ensure that the carbon belt can meet the needs of different users.

7. Packaging and labeling

Packaging: The tested carbon strips are packaged to prevent damage during storage and transportation.

Identification: Clearly mark the model, specification, production date and other information of the carbon belt on the package for user identification and traceability.

In summary, the production process of the mixed base carbon strip involves several key steps, including preparation of the base film, ink production and coating, multi-layer structure coating, drying and curing, scuttling and winding, quality control and testing, and packaging and labeling. Together, these steps determine the final quality and properties of the carbon strip.