Cold forming aluminium foil – Packaging material standard test procedure

Aluminium foil is a thin rolled sheet of pure or alloyed aluminium varying in thickness. Aluminium foil combined with other material such as plastic film can be used to package a host of drugs products. Aluminium foil can be printed embossed or etched. Foil for blister packing should be tempered hard. Aluminium foil coated on inner side with heat sealable lacquer. Aluminium foils are printed on matt finish side by gravure printing process. There are supplied in roll foam with proper labeling. A certificate of analysis is accompanied with each supply.

  • Description:
    • Acceptance Criteria:___________Coloured/Multicoloured, ___________/__________, Aluminium foil, soft dull side lacquer laminated to the OPA film, bright side lacquer laminated to PVC film, on __________ colour background. 
  • Pinhole test: Place 1 meter piece of Aluminium foil in front of light source & observe, there should not be any hole.
    • Acceptance criteria: Should be absent when checked with normal naked eye.
  • Cleanliness check:
    • Acceptance criteria: Should be free from foreign particles and dust.
  • Width: Measure width with calibrated measuring scale.
    • Acceptance criteria: _______ ± 2 mm
  • Thickness : Measure Thickness with calibrated micrometer.
    • Acceptance criteria: ________  ± 0.02 mm
  • Grammage : Cut the sample in 10 cm x 10 cm piece or suitable measured scale, weigh it and calculate the Grammage with following formula,       

                      Weight of 10 cm x 10 cm piece in gm

Grammage = ————————————————– x 10000

                                Total area of piece in cm2

  • Acceptance criteria: Not less than 240 gsm