What are the key steps in the production process of PET thermosensitive matte silver paper?

The production process of PET thermosensitive matte silver paper involves multiple key links, which together ensure the quality and performance of the final product. The following are the main steps and key links in the production process of PET thermosensitive matte silver paper:

1、 Raw material preparation

Polyester film (PET): As the base material, high-quality PET film with a certain thickness and strength should be selected to ensure stability and durability during the printing process.

Thermal sensitive coating materials: including thermal sensitive color changing pigments, resins, sensitizers, stabilizers, etc. These components can undergo chemical reactions under heating conditions, thereby releasing color.

Matte silver special coating material: used to give the label a matte silver texture, ensuring that the coating is uniform and stable.

2、 Coating process

Thermal sensitive coating coating: Apply the thermal sensitive coating material evenly onto the PET film to form a thermal sensitive color changing layer. This step requires strict control of the thickness and uniformity of the coating to ensure the clarity and color saturation of the printing effect.

Application of matte silver special coating: Apply a matte silver special coating above or below the thermosensitive coating (according to specific process design) to form a matte silver texture. It is also necessary to control the thickness and uniformity of the coating.

3、 Drying and curing

Drying treatment: After coating is completed, the paper needs to be dried to remove solvents and moisture from the coating, so that the coating can firmly adhere to the PET film. Drying methods may include airflow drying, rapid drying with ultraviolet lamps, etc.

Curing treatment: further ensuring a strong bond between the coating and PET film, improving the durability of the label. Curing treatment may involve processes such as heating or ultraviolet irradiation.

4、 Composite and cutting

Composite process (if necessary): In some cases, it may be necessary to composite PET thermosensitive matte silver paper with other materials (such as adhesive backing paper) to meet specific application requirements. During the composite process, it is necessary to ensure a strong bond between the materials.

Cutting and slitting: Cut and slitting the dried and cured PET thermosensitive matte silver paper according to the predetermined size for subsequent use and processing.

5、 Quality inspection and packaging

Quality inspection: Strict quality inspection is conducted on the produced PET thermosensitive matte silver paper, including paper flatness, coating uniformity, printing effect, and durability. Ensure that the product meets standards and customer requirements.

Packaging and Storage: Pack qualified PET thermosensitive matte silver paper and label and store it according to customer requirements. During the packaging process, it is necessary to ensure the moisture, dust, and scratch resistance of the product.

In summary, the production process of PET thermosensitive matte silver paper involves multiple key steps, including raw material preparation, coating process, drying and curing, lamination and cutting, as well as quality inspection and packaging. These steps together ensure the quality and performance of the final product, meeting the market's demand for high-quality, high-efficiency, and environmentally friendly PET thermal matte silver paper.