What is the process flow for producing PET matte silver thermal paper?

The production process of PET matte silver thermal paper mainly includes the following steps:

1、 Raw paper preparation

Choose high-quality PET (polyethylene terephthalate) material as the substrate to ensure the flatness, strength, and printing effect of the paper. PET material has good waterproof and oil resistant properties and is suitable for making matte silver thermal paper.

2、 Coating preparation and coating

Preparation of thermal sensitive coating: This is a key step in producing PET matte silver thermal sensitive paper. Thermal sensitive coatings are mainly composed of various chemical substances such as colorless dyes, color developing agents, sensitizers, stabilizers, adhesives, etc. These components can undergo chemical reactions under heating conditions, releasing colors.

Coating with thermal sensitive coating: Apply the prepared thermal sensitive coating evenly onto the PET substrate. This step requires precise control of the thickness and uniformity of the coating to ensure consistency in the printing effect.

3、 Drying and solidification

After coating, the paper needs to be dried and cured. The purpose of this step is to firmly attach the thermosensitive coating to the PET substrate and achieve the best printing effect.

Drying methods may include air flow drying under low temperature conditions, rapid drying using ultraviolet lamps, etc.

4、 Add protective layer (optional)

In order to improve the durability and adhesion of PET matte silver thermal paper, sometimes a protective layer is added on top of the thermal coating.

The protective layer can absorb some of the light that causes chemical reactions in the thermal sensitive coating, slow down the deterioration of the printing paper, and protect the thermal sensitive components of the printer from damage.

5、 Quality inspection and cutting

Conduct quality inspection on the finished PET matte silver thermal paper to ensure that each batch of paper meets the specified standards. The testing content includes the flatness of the paper, the uniformity of the coating, the printing effect, and durability.

Cut and strip the paper that passes the inspection according to the required size for subsequent use and processing.

6、 Packaging and storage

Pack the cut PET matte silver thermal paper and label and store it according to customer requirements.

During storage, attention should be paid to moisture, sun protection, and pressure resistance to ensure the quality and performance of the paper.

In summary, the production process of PET matte silver thermal paper includes multiple steps such as raw paper preparation, coating preparation and application, drying and curing, adding protective layer (optional), quality inspection and cutting, and packaging and storage. These steps require precise control of various parameters and conditions to ensure the quality and performance of the final product.