Certification Scope Verification for Industrial Compostable Packaging Materials
Verify industrial compostability claims by matching finished pack wall thickness and ink coverage against public register scope lines before shipping.
Physical Disintegration
Structural Breakdown
Mechanical decomposition describes the breakdown of a solid material into smaller, unidentifiable fragments under the influence of moisture, heat, oxygen and mechanical stress. The progress of physical disintegration is typically measured by sieving the composted material after a set period to determine the percentage of fragments that remain larger than a specified size. This stage is a prerequisite for biological degradation and compostability certification.
Industrial Composting
Laboratory evaluations simulate the thermophilic phase of industrial composting to observe how packaging samples fragment over time. Tested boards or papers are cut to specific dimensions and mixed with synthetic biowaste in a reactor maintained at fifty-eight degrees Celsius. The material must break down so that less than ten percent of its original dry mass is retained on a two-millimeter sieve after twelve weeks.
Moisture levels, aeration, temperature and microbial activity are carefully balanced to ensure that the physical breakdown is driven by both thermal degradation and enzymatic action rather than simple water dissolution.
Mechanical Separation
Differentiating this fragmenting behavior from true molecular decomposition is critical for environmental protection. While fragmenting increases the surface area available to microorganisms, it does not guarantee that the material is being consumed at a chemical level. Measuring physical disintegration ensures that the packaging will not create physical litter or block composting equipment, but it must be paired with biodegradation testing to prove complete environmental safety.