CONTAINERS | PACKAGING | RAW MATERIALS

Información Técnica

what analyses are performed for varnishes

In order to evaluate and approve coatings used in the coating of metal containers, several analyses and tests are carried out. These tests may include:

  1. Chemical resistance: The ability of the varnish to resist corrosion and contact with different chemical products present in packaged foods is evaluated.
  2. Physical resistance: The varnish is tested for its ability to withstand handling, storage and transport conditions, including resistance to scratching, impact and deformation.
  3. Adhesion: The adhesion of the varnish to the metal surface of the container is evaluated.
  4. Application: The ease of application of the varnish during the manufacturing process of the container and whether it complies with the required thickness and uniformity parameters are analyzed.
  5. Compatibility with the manufacturing process: It is verified if the varnish is compatible with the stamping, welding and forming processes of the container.
  6. SEM-EDS analysis (Scanning Electron Microscopy and X-Ray Energy Dispersive Spectroscopy): This technique allows studying the chemical composition and morphology of the varnish and tinplate.
  7. Compliance with regulations and specifications: The technical data sheets of the varnishes are reviewed and verified for compliance with the regulations and documents applicable to the metal and food packaging sector.

These analyses and tests may vary according to the specific requirements of each manufacturer and the type of metal packaging. The purpose of these tests is to ensure that the varnish meets the quality and safety requirements necessary to protect the contents of the container and maintain its integrity throughout the life cycle of the product.

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