Smithers can support with testing to ASTM D918. This standard determines the blocking resistance of flexible types of packaging materials, including the following:

  • Impregnated, coated or laminated papers
  • Coated and laminated metallic foils
  • Polymer films and plastic laminates.

The test method provides a range of standard conditions of temperature and relative humidity at constant pressure for a specified time which is designed to simulate varying climatic conditions that may be encountered in the manufacture, storage, transportation, or use of the materials. A simple subjective three-level assessment is made: no block, some block or well blocked.

Download a brochure for more information:

Show Policy

Latest Resources

See all resources