Pinholes in packaging films may result from the material conversion process or subsequent manual handling and transit of the primary packaging. Damage mechanisms include abrasion; flex cracking, snagging and puncture.

Pinhole testing and pack integrity

The size of pinholes or micro-perforations can be determined either by optical microscopy or an aggregate hole-size determined for a pack using a pressure decay pack integrity method.

Standards and accreditation

All test methods adhere to British and International standard BS EN 868-1 for which Smithers is UKAS, ISO 17025 accredited.

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