Compliance work

Overall migration Sensory analysis

specific migration

Material analysis

Mechanical properties

permeation

PPWR/ Recycling

Evaluation of flatness, curvature and wrinkling of plastic films - strip method

A 2.54 m (100 inch) long sheet (film section) is cut into 50.4 (2 inch) wide strips. A lack of flatness or possible curvature, which can lead to wrinkling of the web, is indicated by any differences in length of the individual strips compared to the original total length of the tested film section of 2.54 m (100 inches).

Test Method Group: Mechanical properties

Norms:
  • ASTM D 1604 (withdrawn) (1963 (Reapproved 1975)) Flatness of plastic sheet or collapsed tubing

Required Sample Amount: min. 3 linear meters of the film without kinks, damages etc.

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