General methods for testing finishes

For this test, two test specimens, including a control specimen, are conditioned for at least 7 days in the test laboratory atmosphere. The second test specimen is successively subjected to various climatic conditions:

– 24 hours at +25 ± 2°C and 85 ± 5% RH

– 24 hours at -12 ± 2°C

– 24 hours at +XX ± 2°C and less than 25 ± 5% RH

– 96 hours at 20 ± 2°C and 65 ± 5% RH

Where XX depends on the intended use of the furniture being tested, and is defined as follows:

– 70°C for furniture subjected to high temperature and/or humidity conditions;

– 50°C for furniture subjected to moderate temperature and/or humidity conditions.

This cycle is repeated 1 or 3 times, depending on the requirements or specifications.

The condition of the samples is then inspected at each different climate condition. If the climate test is deemed satisfactory, the technician performs a chisel test; the methodology for this test depends on the type of coating being tested.

• Skills : 
  Finition

• Normative references : 
  NF D60-050

• COFRAC Accreditation